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JP5657609B2 - Breathing gas supply device - Google Patents

Breathing gas supply device
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JP5657609B2
JP5657609B2JP2012141651AJP2012141651AJP5657609B2JP 5657609 B2JP5657609 B2JP 5657609B2JP 2012141651 AJP2012141651 AJP 2012141651AJP 2012141651 AJP2012141651 AJP 2012141651AJP 5657609 B2JP5657609 B2JP 5657609B2
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oxygen gas
gas supply
extraction unit
unit
supply unit
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JP2013048888A (en
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将昭 辻
将昭 辻
酒井 光則
光則 酒井
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Nippon Sanso Holdings Corp
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Translated fromJapanese

本発明は、呼吸用気体供給装置に関し、詳しくは、各種医療用酸素ガス供給源からの酸素を呼吸器系疾患を持つ患者に供給する際に使用する呼吸用気体供給装置に関する。  The present invention relates to a breathing gas supply device, and more particularly to a breathing gas supply device used when oxygen from various medical oxygen gas supply sources is supplied to a patient having a respiratory disease.

肺気腫や慢性気管支炎等の呼吸器系疾患を持つ患者が在宅時や外出時に酸素を吸入するための機器として、小型で携帯可能なFRP製の医療用酸素ガス容器が一般的に用いられている。この医療用酸素ガス容器には、カニューラを介して吸入する酸素ガスの圧力や流量を調節するための減圧弁や流量調節弁を備えた呼吸用気体供給装置が取り付けられている。この呼吸用気体供給装置として、減圧手段及び流量設定手段を備えた容器ユニット部と、デマンドレギュレーターを備えたセーバーユニット部とに分割し、医療用酸素ガス容器に取り付けられる容器ユニット部に対してセーバーユニット部を着脱可能とした一体型呼吸用気体供給装置が知られている(例えば、特許文献1参照。)。  As a device for inhaling oxygen when a patient with respiratory diseases such as emphysema and chronic bronchitis is at home or going out, a small and portable medical oxygen gas container made of FRP is generally used. . The medical oxygen gas container is provided with a breathing gas supply device including a pressure reducing valve and a flow rate adjusting valve for adjusting the pressure and flow rate of oxygen gas sucked through the cannula. This breathing gas supply device is divided into a container unit portion provided with a decompression means and a flow rate setting means and a saver unit portion provided with a demand regulator, and saver is provided for a container unit portion attached to a medical oxygen gas container. An integrated breathing gas supply device in which a unit part is detachable is known (for example, see Patent Document 1).

特許第4409817号公報Japanese Patent No. 4409817

特許文献1に記載された一体型呼吸用気体供給装置は、押し込むことによって容器ユニット部にセーバーユニット部を合体させるための合体惹起手段と、押し込むことによって容器ユニット部からセーバーユニット部を分離させるための解除惹起手段とを設けているため、構造が複雑になるだけでなく、合体させるときには、容器ユニット部に対してセーバーユニット部を位置合わせしてずれたりしないように押し付けた状態で合体惹起手段を押し込まなければならず、操作性に難点があり、高齢者などの負担になっていた。また、両方とも押し込むことで合体させたり、合体を解除させたりするものであるため、押し間違いにより合体や解除がスムーズにいかないこともあった。さらに、セーバーユニット部を使用中に、何らかの原因で解除惹起手段が押し込まれた状態になると、容器ユニット部からセーバーユニット部が外れてしまい、カニューラへの呼吸用気体の供給が絶たれてしまうおそれがあった。  The integrated breathing gas supply device described inPatent Document 1 separates the saver unit portion from the container unit portion by pushing together with the coalescence inducing means for bringing the saver unit portion into the container unit portion by pushing. The release inducing means is not only complicated, but also the uniting inducing means in a state where the saver unit part is pressed against the container unit part so as not to be displaced when the parts are united. Had to be pushed in, and there were difficulties in operability, which was a burden on the elderly. Moreover, since both are united by pushing and united, the uniting and the cancellation | release may not go smoothly by the pushing mistake. Furthermore, if the release-inducing means is pushed in for some reason while using the saver unit, the saver unit may be detached from the container unit and the supply of breathing gas to the cannula may be cut off. was there.

なお、前記特許文献1では、請求項1において流量設定手段が容器ユニット部に備えられていると記載しているにもかかわらず、発明の実施の形態では、流量設定つまみがセーバーユニット部に備えられていると記載しているため、容器ユニット部及びセーバーユニット部の構成が明確ではない。  In addition, in the saidpatent document 1, although it described that the flow volume setting means was provided in the container unit part inClaim 1, in embodiment of invention, the flow volume setting knob is provided in a saver unit part. The structure of the container unit and the saver unit is not clear.

そこで本発明は、医療用酸素ガス容器をはじめとする各種医療用酸素ガスの酸素ガス取出口に固着される酸素ガス取出ユニットと、カニューラなどが接続されるガス供給ユニットとの着脱を容易かつ確実に行うことができ、呼吸用気体を安定した状態で確実に供給することができる呼吸用気体供給装置を提供することを目的としている。  Therefore, the present invention provides easy and reliable attachment / detachment between an oxygen gas extraction unit fixed to an oxygen gas outlet of various medical oxygen gases including a medical oxygen gas container and a gas supply unit to which a cannula is connected. It is an object of the present invention to provide a breathing gas supply device that can be performed in a stable manner and can reliably supply the breathing gas in a stable state.

上記目的を達成するため、本発明の呼吸用気体供給装置は、医療用酸素ガス供給源から供給される酸素ガスを流量調節して使用者に供給する呼吸用気体供給装置において、前記医療用酸素ガス供給源の酸素ガス取出口に固着される酸素ガス取出ユニットと、該酸素ガス取出ユニットに着脱可能に結合するガス供給ユニットとを備え、前記酸素ガス取出ユニットは、該酸素ガス取出ユニットに前記ガス供給ユニットが結合しているときにのみ開弁する逆止弁を備え、前記ガス供給ユニットは、前記酸素ガス取出ユニットからガス供給ユニットに導入された酸素ガスの流量を設定する流量調節弁を備え、酸素ガス取出ユニット及びガス供給ユニットは、互いに係合して酸素ガス取出ユニットとガス供給ユニットとを結合させる係合手段をそれぞれ備え、前記酸素ガス取出ユニットは、前記係合手段の係合状態を解除して酸素ガス取出ユニットとガス供給ユニットとを分離可能とする係合解除手段及び該係合解除手段の係合解除動作を規制する係合解除規制手段を備え、前記ガス供給ユニットは、前記流量調節弁で設定した酸素ガスの流量がゼロに設定されているときに、前記係合解除規制手段による前記係合解除手段の係合解除動作の規制を解除する規制解除手段を備え、前記係合手段は、前記ガス供給ユニットに設けられた係合突部を有する雄側係合部材と、前記酸素ガス取出ユニットに設けられた前記雄側係合部材の係合突部に対して係合位置と非係合位置とに移動可能に形成された雌側係合部材と、前記雌側係合部材を前記非係合位置に押動する前記係合解除手段である押動部材とを備えていることを特徴としている。
In order to achieve the above object, the breathing gas supply device of the present invention is the breathing gas supply device for supplying oxygen to a user by adjusting the flow rate of oxygen gas supplied from a medical oxygen gas supply source. An oxygen gas extraction unit fixed to an oxygen gas extraction port of a gas supply source; and a gas supply unit detachably coupled to the oxygen gas extraction unit, wherein the oxygen gas extraction unit includes the oxygen gas extraction unit. A check valve that opens only when the gas supply unit is coupled, and the gas supply unit includes a flow rate adjustment valve that sets a flow rate of oxygen gas introduced from the oxygen gas extraction unit to the gas supply unit. The oxygen gas extraction unit and the gas supply unit are engaged with each other by engaging means for coupling the oxygen gas extraction unit and the gas supply unit, respectively. The oxygen gas extraction unit releases the engagement state of the engagement means so that the oxygen gas extraction unit and the gas supply unit can be separated, and the engagement release operation of the engagement release means. Disengagement restricting means that restricts the disengagement means by the disengagement restricting means when the flow rate of oxygen gas set by the flow rate control valve is set to zero. And a restriction release means for releasing the restriction of the engagement release operation, wherein the engagement means is provided on the male side engagement member having an engagement protrusion provided on the gas supply unit, and on the oxygen gas extraction unit. A female engagement member formed to be movable between an engagement position and a non-engagement position with respect to the engagement protrusion of the male engagement member, and the female engagement member is disengaged Pushing member that is the disengaging means that pushes into position It is characterized inthat it comprises a.

また、本発明の呼吸用気体供給装置は、医療用酸素ガス供給源から供給される酸素ガスを流量調節して使用者に供給する呼吸用気体供給装置において、前記医療用酸素ガス供給源の酸素ガス取出口に固着される酸素ガス取出ユニットと、該酸素ガス取出ユニットに着脱可能に結合するガス供給ユニットとを備え、前記酸素ガス取出ユニットは、該酸素ガス取出ユニットに前記ガス供給ユニットが結合しているときにのみ開弁する逆止弁を備え、前記ガス供給ユニットは、前記酸素ガス取出ユニットからガス供給ユニットに導入された酸素ガスの流量を設定する流量調節弁を備え、酸素ガス取出ユニット及びガス供給ユニットは、互いに係合して酸素ガス取出ユニットとガス供給ユニットとを結合させる係合手段をそれぞれ備え、前記酸素ガス取出ユニットは、前記係合手段の係合状態を解除して酸素ガス取出ユニットとガス供給ユニットとを分離可能とする係合解除手段及び該係合解除手段の係合解除動作を規制する係合解除規制手段を備え、前記ガス供給ユニットは、前記流量調節弁で設定した酸素ガスの流量がゼロに設定されているときに、前記係合解除規制手段による前記係合解除手段の係合解除動作の規制を解除する規制解除手段を備え、前記酸素ガス取出ユニット及び前記ガス供給ユニットは、それぞれ形成された結合面を当接させた状態で結合し、前記係合手段は、ガス供給ユニットの結合面から酸素ガス取出ユニットに向けて突設され、先端部側面に係合突部が設けられた雄側係合部材と、酸素ガス取出ユニットの結合面に設けられて前記雄側係合部材が進入する保持孔の側壁部に前記酸素ガス取出口の軸線と直交する方向に移動して前記雄側係合部材の係合突部に対して係合位置と非係合位置とに移動可能に形成された雌側係合部材とを備え、前記雌側係合部材は、前記非係合位置において前記酸素ガス取出ユニットの結合面の外周面より突出するように形成され、前記雌側係合部材の色調と異なる色調の非係合表示部を上面に設けていることを特徴としている。The breathing gas supply device of the present invention is a breathing gas supply device that adjusts the flow rate of oxygen gas supplied from a medical oxygen gas supply source and supplies the oxygen gas to a user. An oxygen gas extraction unit fixed to the gas extraction port; and a gas supply unit detachably coupled to the oxygen gas extraction unit. The oxygen gas extraction unit is connected to the oxygen gas extraction unit. A check valve that opens only when the gas supply unit is open, and the gas supply unit includes a flow rate adjustment valve that sets a flow rate of oxygen gas introduced from the oxygen gas extraction unit to the gas supply unit, The unit and the gas supply unit each include engagement means for engaging with each other to couple the oxygen gas extraction unit and the gas supply unit, The exit unit releases the engagement state of the engagement means to disengage the oxygen gas extraction unit and the gas supply unit, and the engagement restricts the disengagement operation of the disengagement means. Disengaging operation of the disengagement means by the disengagement restriction means when the flow rate of oxygen gas set by the flow rate control valve is set to zero. The oxygen gas extraction unit and the gas supply unit are coupled in a state where the formed coupling surfaces are in contact with each other, and the engagement unit is coupled to the gas supply unit. A male-side engaging member that protrudes from the surface toward the oxygen gas extraction unit and has an engagement protrusion on the side surface of the tip, and a male-side engagement member that is provided on the coupling surface of the oxygen gas extraction unit. Keep entering It is formed on the side wall of the hole so as to move in a direction perpendicular to the axis of the oxygen gas outlet and move between an engagement position and a non-engagement position with respect to the engagement protrusion of the male engagement member. A female engagement member, and the female engagement member is formed so as to protrude from the outer peripheral surface of the coupling surface of the oxygen gas extraction unit at the non-engagement position. And a disengagement display portion having a color tone different from that of the first embodiment is provided on the upper surface.

前記雌側係合部材は、前記係合位置において前記酸素ガス取出ユニットの結合面の外周面と面一になる外側面を有することが好ましい。
The female engagement member preferablyhas an outer surface that isflush with the outer peripheral surface of the coupling surface of the oxygen gas extraction unit at the engagement position .

また、本発明の呼吸用気体供給装置は、医療用酸素ガス供給源から供給される酸素ガスを流量調節して使用者に供給する呼吸用気体供給装置において、前記医療用酸素ガス供給源の酸素ガス取出口に固着される酸素ガス取出ユニットと、該酸素ガス取出ユニットに着脱可能に結合するガス供給ユニットとを備え、前記酸素ガス取出ユニットは、該酸素ガス取出ユニットに前記ガス供給ユニットが結合しているときにのみ開弁する逆止弁を備え、前記ガス供給ユニットは、前記酸素ガス取出ユニットからガス供給ユニットに導入された酸素ガスの流量を設定する流量調節弁を備え、酸素ガス取出ユニット及びガス供給ユニットは、互いに係合して酸素ガス取出ユニットとガス供給ユニットとを結合させる係合手段をそれぞれ備え、前記酸素ガス取出ユニットは、前記係合手段の係合状態を解除して酸素ガス取出ユニットとガス供給ユニットとを分離可能とする係合解除手段及び該係合解除手段の係合解除動作を規制する係合解除規制手段を備え、前記ガス供給ユニットは、前記流量調節弁で設定した酸素ガスの流量がゼロに設定されているときに、前記係合解除規制手段による前記係合解除手段の係合解除動作の規制を解除する規制解除手段を備え、前記酸素ガス取出ユニット及び前記ガス供給ユニットは、前記酸素ガス取出口の軸線と直交する方向にそれぞれ形成された結合面を当接させた状態で結合し、前記酸素ガス取出口の軸線方向に分離可能に形成され、前記係合手段は、ガス供給ユニットの結合面から酸素ガス取出ユニットに向けて突設され、先端部側面に係合突部が設けられた雄側係合部材と、酸素ガス取出ユニットの結合面に設けられて前記雄側係合部材が進入する保持孔の側壁部に前記酸素ガス取出口の軸線と直交する方向に移動して前記雄側係合部材の係合突部に対して係合位置と非係合位置とに移動可能に形成された雌側係合部材と、該雌側係合部材を前記非係合位置から前記係合位置に向けて付勢する雌側係合部材付勢手段と、前記酸素ガス取出口の軸線と直交する方向に移動して前記雌側係合部材を前記非係合位置に押動する前記係合解除手段である押動部材と、前記酸素ガス取出口の軸線方向に移動して前記押動部材が前記雌側係合部材を前記非係合位置に押動する方向に移動することを規制する押動規制位置と押動規制解除位置とに移動可能に設けられて前記押動規制位置では酸素ガス取出ユニットの結合面からガス供給ユニットに向けて突出した状態になる前記係合解除規制手段である押動規制部材と、該押動規制部材を前記押動規制位置に付勢する押動規制部材付勢手段とを備えていることを特徴としている。さらに、前記雄側係合部材は、先端部で雌側係合部材を雌側係合部材付勢手段付勢力に抗して前記非係合位置に押動し、前記係合突部に対して雌側係合部材が係合可能な位置まで雄側係合部材を保持孔内に進入させたときに、雌側係合部材付勢手段の付勢力によって雌側係合部材が係合突部との係合位置に移動して雄側係合部材と雌側係合部材とが係合して酸素ガス取出ユニットとガス供給ユニットとを結合状態に保持し、前記流量調節弁は、前記酸素ガス取出口の軸線方向の回転軸を中心として回転する流量調節ダイヤルをガス供給ユニットの外周部に備え、該流量調節ダイヤルの結合面側には、酸素ガスの流量をゼロに設定したときに前記押動規制部材を前記押動規制解除位置に移動させる前記規制解除手段が設けられていることが好ましい。The breathing gas supply device of the present invention is a breathing gas supply device that adjusts the flow rate of oxygen gas supplied from a medical oxygen gas supply source and supplies the oxygen gas to a user. An oxygen gas extraction unit fixed to the gas extraction port; and a gas supply unit detachably coupled to the oxygen gas extraction unit. The oxygen gas extraction unit is connected to the oxygen gas extraction unit. A check valve that opens only when the gas supply unit is open, and the gas supply unit includes a flow rate adjustment valve that sets a flow rate of oxygen gas introduced from the oxygen gas extraction unit to the gas supply unit, The unit and the gas supply unit each include engagement means for engaging with each other to couple the oxygen gas extraction unit and the gas supply unit, The exit unit releases the engagement state of the engagement means to disengage the oxygen gas extraction unit and the gas supply unit, and the engagement restricts the disengagement operation of the disengagement means. Disengaging operation of the disengagement means by the disengagement restriction means when the flow rate of oxygen gas set by the flow rate control valve is set to zero. The oxygen gas extraction unit and the gas supply unit are coupled in a state in which the coupling surfaces formed in the direction perpendicular to the axis of the oxygen gas outlet are in contact with each other. The oxygen gas outlet is formed to be separable in the axial direction, and the engagement means protrudes from the coupling surface of the gas supply unit toward the oxygen gas extraction unit, and an engagement protrusion is provided on the side surface of the tip portion. The male side engaging member is moved to a side wall portion of a holding hole which is provided on the coupling surface of the oxygen gas extracting unit and the male side engaging member enters in a direction perpendicular to the axis of the oxygen gas outlet. A female engagement member formed to be movable between an engagement position and a non-engagement position with respect to the engagement protrusion of the male engagement member; and the female engagement member from the non-engagement position. A female-side engagement member urging means that urges toward the engagement position, and moves in a direction perpendicular to the axis of the oxygen gas outlet to push the female-side engagement member to the non-engagement position And a pushing member that is the disengaging means that moves in the axial direction of the oxygen gas outlet, and the pushing member moves in a direction to push the female engagement member to the disengaged position. It is provided so as to be movable between a push restricting position that restricts this and a push restrict releasing position, and at the push restricting position, an oxygen gas extraction unit is provided. A push restricting member as the disengagement restricting means that protrudes from the coupling surface of the base plate toward the gas supply unit, and a push restricting member that biases the push restricting member to the push restricting position And an urging means. Further, the male side engaging member pushes the female side engaging member to the disengaged position against the urging force of the female side engaging member urging means atthe tip, and On the other hand, when the male engagement member is advanced into the holding hole to a position where the female engagement member can be engaged, the female engagement member is engaged by the urging force of the female engagement member urging means. The male side engaging member and the female side engaging member are engaged to move to the engaging position with the protrusion, and the oxygen gas extraction unit and the gas supply unit are held in a coupled state. When a flow rate adjustment dial that rotates about the axis of rotation of the oxygen gas outlet in the axial direction is provided on the outer periphery of the gas supply unit, the flow rate of oxygen gas is set to zero on the coupling surface side of the flow rate adjustment dial Preferably, the restriction release means for moving the push restriction member to the push restriction release position is provided. Arbitrariness.

前記ガス供給ユニットが、該ガス供給ユニットから供給する酸素ガスを連続して供給する連続供給と、酸素ガスを呼吸に同調させて供給する同調供給とを切り替える供給状態切替手段を備えていることが好ましい。  The gas supply unit includes supply state switching means for switching between continuous supply for continuously supplying oxygen gas supplied from the gas supply unit and synchronized supply for supplying oxygen gas in synchronization with respiration. preferable.

前記医療用酸素ガス供給源が、酸素ガスを高圧充填した医療用酸素ガス容器の場合、前記酸素ガス取出ユニットは、前記医療用酸素ガス容器から導出された酸素ガスを減圧する減圧弁、前記医療用酸素ガス容器からの酸素ガス導出経路を開閉する容器元弁、前記医療用酸素ガス容器内の酸素ガスの残量を表示する残量計、前記医療用酸素ガス容器内に酸素ガスを充填する充填口、前記医療用酸素ガス容器内の圧力が上昇したときに開弁する安全弁及び前記医療用酸素ガス容器から取り出した酸素ガス中の塵埃を除去するフィルタを備えていることが好ましく、前記酸素ガス取出口の軸線が、前記医療用酸素ガス容器の軸線と一致していることが好ましい。  When the medical oxygen gas supply source is a medical oxygen gas container filled with oxygen gas at a high pressure, the oxygen gas extraction unit includes a pressure reducing valve that decompresses the oxygen gas derived from the medical oxygen gas container, and the medical A container main valve that opens and closes an oxygen gas lead-out path from the medical oxygen gas container, a fuel gauge that displays the remaining amount of oxygen gas in the medical oxygen gas container, and the medical oxygen gas container is filled with oxygen gas It is preferable to include a filling port, a safety valve that opens when the pressure in the medical oxygen gas container increases, and a filter that removes dust in oxygen gas taken out from the medical oxygen gas container. It is preferable that the axis of the gas outlet coincides with the axis of the medical oxygen gas container.

本発明の呼吸用気体供給装置によれば、ガス供給ユニットが結合しているときにのみ開弁する逆止弁を酸素ガス取出ユニットが備えているので、ガス供給ユニットが結合していないときには、医療用酸素ガス供給源から外部に酸素ガスが流出することはなく、流量調節弁の酸素ガス流量がゼロ以外では係合手段の解除を行えないので、酸素ガスを使用中にガス供給ユニットが酸素ガス取出ユニットから外れて呼吸用気体の供給が途絶えることがない。さらに、酸素ガスの供給量がゼロで呼吸用気体を使用していないときには、ガス供給ユニットを容易に取り外すことができ、取り外したガス供給ユニットは、他の医療用酸素ガス供給源に取り付けられている酸素ガス取出ユニットに取り付けることができるので、例えば、複数の医療用酸素ガス容器に酸素ガス取出ユニットをそれぞれ固着しておくことにより、使用する医療用酸素ガス容器の交換を容易に行うことができる。さらに、複数の異なる医療用酸素ガス供給源にあらかじめ酸素ガス取出ユニットをそれぞれ固着しておくことにより、使用者の状況に応じた適宜な医療用酸素ガス供給源を選択して利用することができる。例えば、在宅時と外出時とで、それぞれ最適な医療用酸素ガス供給源を利用することができる。また、ガス供給ユニットに連続供給と同調供給とを切り替える供給状態切替手段を設けておくことにより、使用状態に応じた供給状態で呼吸用気体を使用者に供給することができる。  According to the breathing gas supply device of the present invention, since the oxygen gas extraction unit includes a check valve that opens only when the gas supply unit is coupled, when the gas supply unit is not coupled, Since the oxygen gas does not flow out from the medical oxygen gas supply source and the engagement means cannot be released unless the oxygen gas flow rate of the flow rate control valve is zero, the gas supply unit can There is no interruption in the supply of breathing gas from the gas extraction unit. Furthermore, when the supply amount of oxygen gas is zero and the breathing gas is not used, the gas supply unit can be easily removed, and the removed gas supply unit is attached to another medical oxygen gas supply source. For example, by attaching the oxygen gas extraction unit to each of a plurality of medical oxygen gas containers, it is possible to easily replace the medical oxygen gas container to be used. it can. Furthermore, by attaching the oxygen gas extraction unit to a plurality of different medical oxygen gas supply sources in advance, it is possible to select and use an appropriate medical oxygen gas supply source according to the user's situation. . For example, an optimal medical oxygen gas supply source can be used at home and when going out. Moreover, by providing the gas supply unit with supply state switching means for switching between continuous supply and synchronized supply, the breathing gas can be supplied to the user in a supply state corresponding to the use state.

さらに、係合手段を酸素ガス取出口の軸線方向に押し付けるように移動させて係合するように形成することにより、ガス供給ユニットを酸素ガス取出ユニットに取り付ける際の操作性を向上させることができ、片手で行うことも可能となる。一方、係合解除手段を酸素ガス取出口の軸線と直交する方向に移動して係合手段の係合を解除するように形成することにより、酸素ガス取出ユニットからガス供給ユニットを取り外す際の操作性を向上でき、片手で取り外すことも可能となる。  Furthermore, the operability when the gas supply unit is attached to the oxygen gas extraction unit can be improved by moving the engagement means so as to be pressed in the axial direction of the oxygen gas extraction port. It can also be done with one hand. On the other hand, an operation for removing the gas supply unit from the oxygen gas extraction unit by moving the engagement release means in a direction orthogonal to the axis of the oxygen gas outlet and releasing the engagement of the engagement means. Can be improved and can be removed with one hand.

さらに、医療用酸素ガス供給源が医療用酸素ガス容器の場合は、酸素ガス取出ユニットに容器元弁を設けておくことにより、非使用時の医療用酸素ガス容器を確実に密閉状態としておくことができ、残量計を設けておくことにより、医療用酸素ガス容器内の酸素ガス量を容易に確認することができる。さらに、充填口を設けておくことにより、酸素ガス取出ユニットを装着したままの状態で医療用酸素ガス容器内への酸素ガスの充填を行うことができ、安全弁を設けておくことにより、何らかの原因で容器内圧力が上昇しても安全であり、フィルタを設けておくことにより、塵埃を含んだ酸素ガスが呼吸用気体として使用者に供給されることもなくなる。  Furthermore, when the medical oxygen gas supply source is a medical oxygen gas container, a container oxygen valve is provided in the oxygen gas take-out unit to ensure that the medical oxygen gas container is kept sealed when not in use. By providing a fuel gauge, the amount of oxygen gas in the medical oxygen gas container can be easily confirmed. Furthermore, by providing a filling port, oxygen gas can be filled into the medical oxygen gas container with the oxygen gas take-out unit attached, and by providing a safety valve, any cause Thus, it is safe even if the pressure in the container rises, and by providing a filter, oxygen gas containing dust is not supplied to the user as a breathing gas.

本発明の呼吸用気体供給装置の一形態例を示す分解斜視図である。It is a disassembled perspective view which shows one example of the breathing gas supply apparatus of this invention.呼吸用気体供給装置における酸素ガス導出経路の一形態例を示すブロック図である。It is a block diagram which shows one example of the oxygen gas derivation | leading-out path | route in the gas supply apparatus for respiration.酸素ガス取出ユニットとガス供給ユニットとを結合させた呼吸用気体供給装置を示す斜視図である。It is a perspective view which shows the gas supply apparatus for respiration which combined the oxygen gas extraction unit and the gas supply unit.呼吸用気体供給装置を医療用酸素ガス容器に装着した使用状態を示す正面図である。It is a front view which shows the use condition which mounted | wore the medical oxygen gas container with the gas supply apparatus for respiration.同じく要部の一部断面正面図である。It is a partial cross section front view of the principal part.図5のVI−VI断面図である。It is VI-VI sectional drawing of FIG.同じく要部の一部断面正面図である。It is a partial cross section front view of the principal part.同じく要部の一部断面側面図である。It is a partial cross section side view of the principal part.供給状態を切り替えた状態を示す要部の正面図である。It is a front view of the principal part which shows the state which switched the supply state.流量をゼロに設定した状態を示す一部断面正面図である。It is a partial cross section front view which shows the state which set the flow volume to zero.酸素ガス取出ユニットからガス供給ユニットを取り外した状態を示す一部断面正面図である。It is a partial cross section front view which shows the state which removed the gas supply unit from the oxygen gas extraction unit.同じく一部断面側面図である。It is a partial cross section side view similarly.図11のXIII−XIII矢視図である。It is a XIII-XIII arrow line view of FIG.図11のXIV−XIV矢視である。It is the XIV-XIV arrow view of FIG.液体酸素容器への接続例を示すブロック図である。It is a block diagram which shows the example of a connection to a liquid oxygen container.

本形態例は、本発明の呼吸用気体供給装置を、酸素ガスを高圧で充填した医療用酸素ガス容器(以下、ガス容器という。)に適用した一形態例を示している。本形態例に示す呼吸用気体供給装置10は、ガス容器11における酸素ガス取出口である口金部11aに固着されてガス容器11の容器弁を兼ねる酸素ガス取出ユニット30と、該酸素ガス取出ユニット30に着脱可能に結合するガス供給ユニット50とで構成されており、酸素ガス取出ユニット30及びガス供給ユニット50の内部には、ガス容器11内から導出した酸素ガスを使用者に供給するための酸素ガス導出経路70が設けられている。  This embodiment shows an embodiment in which the breathing gas supply device of the present invention is applied to a medical oxygen gas container (hereinafter referred to as a gas container) filled with oxygen gas at a high pressure. The breathinggas supply device 10 shown in the present embodiment includes an oxygengas extraction unit 30 that is fixed to abase 11a that is an oxygen gas outlet in the gas container 11 and also serves as a container valve of the gas container 11, and the oxygen gas extraction unit Thegas supply unit 50 is detachably coupled to thegas supply unit 30, and the oxygengas extraction unit 30 and thegas supply unit 50 are provided inside the gas container 11 for supplying oxygen gas derived from the gas container 11 to the user. An oxygengas outlet path 70 is provided.

酸素ガス取出ユニット30の酸素ガス導出経路70aは、容器弁部71と減圧部72とを備えており、容器弁部71には、酸素ガス導出経路70aをガス容器11内に連通させる容器連通部73と、酸素ガス導出経路70aを開閉する容器元弁74と、ガス容器11内の圧力に対応してガス容器11内の酸素ガスの残量を表示する残量計75と、ガス容器11内の圧力があらかじめ設定された上限圧力を超えたときに開弁する安全弁76と、ガス容器11内に酸素ガスを充填するための充填口77とが設けられている。  The oxygengas extraction path 70 a of the oxygengas extraction unit 30 includes acontainer valve portion 71 and adecompression portion 72, and a container communication portion that allows the oxygengas extraction path 70 a to communicate with the gas container 11. 73, a containermain valve 74 that opens and closes the oxygengas outlet path 70 a, afuel gauge 75 that displays the remaining amount of oxygen gas in the gas container 11 corresponding to the pressure in the gas container 11, and the inside of the gas container 11A safety valve 76 that opens when the pressure exceeds a preset upper limit pressure, and a fillingport 77 for filling the gas container 11 with oxygen gas are provided.

また、減圧部72には、ガス容器11内から導出した高圧の酸素ガスをあらかじめ設定された圧力に減圧するための減圧弁78と、酸素ガス導出経路70aを流れる酸素ガス中の塵埃を除去するフィルタ79と、酸素ガス取出ユニット30にガス供給ユニット50が結合しているときにのみ開弁する逆止弁80とが設けられ、逆止弁80の下流側の酸素ガス導出経路70aの端部には、ガス供給ユニット50内の酸素ガス導出経路70bの端部に設けられた雄側継手部81に着脱可能に接続する雌側継手部82が設けられている。  Thedecompression unit 72 removes dust in the oxygen gas flowing through the oxygengas delivery path 70a and adecompression valve 78 for decompressing the high-pressure oxygen gas derived from the gas container 11 to a preset pressure. Afilter 79 and acheck valve 80 that opens only when thegas supply unit 50 is coupled to the oxygengas extraction unit 30 are provided, and an end portion of the oxygen gas lead-outpath 70a on the downstream side of thecheck valve 80 Is provided with a femalejoint portion 82 detachably connected to a malejoint portion 81 provided at an end of the oxygen gas outlet path 70b in thegas supply unit 50.

一方のガス供給ユニット50内の酸素ガス導出経路70bには、使用者に供給する酸素ガスの流量を設定する流量調節弁83と、酸素ガスの供給状態を連続供給状態と同調供給状態とに切り替える供給状態切替手段84とが設けられ、酸素ガス導出経路70bの出口部にはジョイント接続部85が設けられている。  In the oxygen gas lead-out path 70b in onegas supply unit 50, a flowrate adjusting valve 83 for setting the flow rate of oxygen gas supplied to the user, and the oxygen gas supply state are switched between a continuous supply state and a tuned supply state. Supply state switching means 84 is provided, and a joint connection portion 85 is provided at the outlet of the oxygen gas outlet path 70b.

酸素ガス取出ユニット30とガス供給ユニット50とは、ガス容器11の酸素ガス取出口の軸線、本形態例では、酸素ガス取出口の軸線と一致するガス容器11の軸線と直交する方向、すなわち、ガス容器11を立てた状態で水平方向に向くようにそれぞれ形成された円盤状の結合面31,51を当接させた状態で結合し、ガス容器11の軸線方向、ガス容器11を立てた状態で上下方向に分離可能に形成されている。  The oxygen gas take-outunit 30 and thegas supply unit 50 are arranged in a direction orthogonal to the axis of the oxygen gas take-out port of the gas container 11, in this embodiment, the axis of the gas container 11 that coincides with the axis of the oxygen gas take-out port, that is, In a state where the gas container 11 is erected, the disk-shaped coupling surfaces 31 and 51 formed so as to face in the horizontal direction are coupled in contact with each other, and the axial direction of the gas container 11 and the state where the gas container 11 is erected It is formed so as to be separable in the vertical direction.

さらに、酸素ガス取出ユニット30の外面には、前記容器元弁74を開閉するための開閉コック32と、前記残量計75の表示部である残量表示部33と、図示は省略するが、前記充填口77の開口と、減圧弁78の調整部とが設けられている。また、酸素ガス取出ユニット30の下部には、酸素ガス取出ユニット30をガス容器11の口金部11aに螺着するための雄ねじ部34が設けられている。  Furthermore, on the outer surface of the oxygengas extraction unit 30, an open /close cock 32 for opening and closing the containermain valve 74, a remainingamount display portion 33 which is a display portion of the remainingamount meter 75, and illustration are omitted. An opening of the fillingport 77 and an adjusting part of thepressure reducing valve 78 are provided. Amale screw part 34 for screwing the oxygengas extraction unit 30 to thebase part 11 a of the gas container 11 is provided at the lower part of the oxygengas extraction unit 30.

一方のガス供給ユニット50は、円柱状の外形を有するもので、酸素ガス取出ユニット結合側となる下向き結合面51に近い外周面には、前記流量調節弁83を操作するための流量設定リング52が水平方向に回動可能に設けられ、該流量設定リング52の上部には、流量調節弁83に設定した酸素ガス流量を数値で表示する流量表示部53が呼吸用気体供給装置の正面を向いて設けられている。  Onegas supply unit 50 has a cylindrical outer shape, and a flowrate setting ring 52 for operating the flowrate control valve 83 is provided on the outer peripheral surface close to thedownward coupling surface 51 on the oxygen gas extraction unit coupling side. Is provided so as to be rotatable in the horizontal direction, and on the upper part of the flowrate setting ring 52, a flowrate display unit 53 for displaying the oxygen gas flow rate set in the flowrate control valve 83 as a numerical value faces the front of the breathing gas supply device. Is provided.

さらに、流量表示部53の上部には、前記供給状態切替手段84の供給切替操作部54と供給状態表示部55とが設けられ、ガス供給ユニット50の外周面一側には、前記ジョイント接続部85に連結されたジョイント56が設けられている。このジョイント56は、ジョイント接続部85との連結部56aからチューブ接続部56bを直角に屈曲させたL字状に形成されており、連結部56aがジョイント接続部85に対して回動可能に形成されており、カニューラのチューブ12を接続するのに適した任意の方向にチューブ接続部56bを回動できるようにしている。  Further, a supplyswitching operation unit 54 and a supplystate display unit 55 of the supplystate switching unit 84 are provided on the upper part of the flowrate display unit 53, and the joint connection unit is provided on one side of the outer peripheral surface of thegas supply unit 50. A joint 56 connected to 85 is provided. The joint 56 is formed in an L shape in which thetube connecting portion 56b is bent at a right angle from the connectingportion 56a with the joint connecting portion 85, and the connectingportion 56a is formed to be rotatable with respect to the joint connecting portion 85. Thetube connecting portion 56b can be rotated in an arbitrary direction suitable for connecting thetube 12 of the cannula.

また、上向き結合面31の中央と下向き結合面51の中央とには、前記雄側継手部81,雌側継手部82の連結端35,57がそれぞれ開口しており、酸素ガス取出ユニット30とガス供給ユニット50とを結合したときに、連結端35,57が気密に嵌合するように形成されている。  Further, at the center of theupward coupling surface 31 and the center of thedownward coupling surface 51, connection ends 35 and 57 of the male sidejoint portion 81 and the female sidejoint portion 82 are opened, respectively. When thegas supply unit 50 is coupled, the connection ends 35 and 57 are formed to be airtightly fitted.

酸素ガス取出ユニット30とガス供給ユニット50とを結合状態に保持するための係合手段は、ガス供給ユニット50の下向き結合面51から酸素ガス取出ユニット30に向かって突出し、先端部側面に係合突部58がそれぞれ設けられた一対の雄側係合部材59と、酸素ガス取出ユニット30の上向き結合面31に設けられた一対の保持孔36の側壁部にそれぞれ設けられた雌側係合部材37とを備えている。  Engagement means for holding the oxygengas extraction unit 30 and thegas supply unit 50 in a coupled state protrudes from thedownward coupling surface 51 of thegas supply unit 50 toward the oxygengas extraction unit 30 and engages with the side surface of the tip portion. A pair ofmale engagement members 59 provided with theprotrusions 58 and a female engagement member provided on the side walls of the pair of holdingholes 36 provided on theupward coupling surface 31 of the oxygengas extraction unit 30. 37.

係合突部58は、雄側係合部材59の側面から下向き結合面51の径方向外側に向かって突出しており、係合突部58の下向き結合面51側には、雌側係合部材37が係合する水平方向の段部58aが形成され、係合突部58の酸素ガス取出ユニット30側先端部には、先端から次第に下向き結合面51の外周側に向かう方向の斜面からなるガイド面58bが形成されている。  Theengagement protrusion 58 protrudes from the side surface of themale engagement member 59 toward the radially outer side of thedownward coupling surface 51, and on thedownward coupling surface 51 side of theengagement projection 58, the female engagement member A steppedportion 58a in the horizontal direction with which 37 is engaged is formed, and a guide composed of a slope in a direction toward the outer peripheral side of thecoupling surface 51 downward from the tip is formed at the tip of theengagement protrusion 58 on the oxygengas extraction unit 30 side. Asurface 58b is formed.

雌側係合部材37は、上向き結合面31内の両側面に開口するようにしてそれぞれ設けられた水平方向の係合部材支持溝38内に設けられており、雌側係合部材37の前後方向中間部が、上下方向を向いた軸部材39によって回動可能に軸支されている。雌側係合部材37の軸部材39より後部側には、前記保持孔36内に出没可能な係合部37aが形成され、軸部材39より前部側には、係合解除用アーム37bが形成されている。  Thefemale engagement members 37 are provided in horizontal engagementmember support grooves 38 provided so as to open on both side surfaces in theupward coupling surface 31. The middle part of the direction is pivotally supported by ashaft member 39 facing in the vertical direction. Anengagement portion 37 a that can be projected and retracted in the holdinghole 36 is formed on the rear side of theshaft member 39 of the femaleside engagement member 37, and anengagement release arm 37 b is formed on the front side of theshaft member 39. Is formed.

前記係合部37aの内側面は、雄側係合部材59のガイド面58bと同じ方向に傾斜したガイド面37cが形成され、外側面37dは、上向き結合面31の外周面と面一になる円弧状に形成されている。また、両雌側係合部材37の内周側には、前記係合部37aを保持孔36内に突出させる方向に付勢する雌側係合部材付勢手段である板バネ40が設けられている。  Aguide surface 37c inclined in the same direction as theguide surface 58b of themale engagement member 59 is formed on the inner surface of theengagement portion 37a, and theouter surface 37d is flush with the outer peripheral surface of theupward coupling surface 31. It is formed in an arc shape. Further, on the inner peripheral side of both the femaleside engaging members 37, aleaf spring 40 is provided as a female side engaging member urging means for urging the engagingportion 37a in the direction of projecting into the holdinghole 36. ing.

これにより、雌側係合部材37は、板バネ40の付勢力で押動されて保持孔36内に係合部37aが突出した係合位置と、板バネ40の付勢力に抗して保持孔36から係合部37aが没して外側面37dが上向き結合面31の外周より外方に突出した状態の非係合位置とに回動可能に形成されている。また、非係合位置で上向き結合面31の外周より外方に突出した状態となる雌側係合部材37の先端部上面には、雌側係合部材37の色調とは異なった色調で、雌側係合部材37が非係合位置にあることを示す非係合表示部37eが設けられている。  Thus, thefemale engagement member 37 is held against the engagement position where theengagement portion 37a protrudes into the holdinghole 36 by being pushed by the urging force of theplate spring 40, and the urging force of theplate spring 40. The engagingportion 37a is sunk from thehole 36, and theouter surface 37d is formed to be rotatable to a non-engaging position in a state where theouter surface 37d protrudes outward from the outer periphery of theupward coupling surface 31. Further, the upper surface of the distal end portion of thefemale engagement member 37 that protrudes outward from the outer periphery of theupward coupling surface 31 at the non-engagement position has a color tone different from the color tone of the femaleside engagement member 37. Anon-engagement display portion 37e is provided to indicate that the femaleside engagement member 37 is in the non-engagement position.

さらに、上向き結合面31の正面側下部には、前記雌側係合部材37の係合部37aを保持孔36から係合部材支持溝38内に没する方向に回動させて、前記雄側係合部材59と雌側係合部材37との係合状態を解除するための係合解除手段である係合解除部材41を収容する係合解除部材収容溝42が水平方向に設けられている。係合解除部材41の内側面両端部は、前記係合解除用アーム37bの外面に当接しており、係合解除用アーム37bを介して前記板バネ40により外周側に付勢されている。  Further, on the lower part on the front side of theupward coupling surface 31, the engagingportion 37 a of the female engagingmember 37 is rotated from the holdinghole 36 into the engagingmember supporting groove 38, so that the male side An engagement releasemember accommodation groove 42 that accommodates anengagement release member 41 that is an engagement release means for releasing the engagement state between theengagement member 59 and the femaleside engagement member 37 is provided in the horizontal direction. . Both end portions of the inner surface of thedisengagement member 41 are in contact with the outer surface of thedisengagement arm 37b, and are urged to the outer peripheral side by theleaf spring 40 via thedisengagement arm 37b.

係合解除部材41の内側面中央部の内側部分には、上下方向のガイド溝43が設けられており、該ガイド溝43内に、係合解除部材41が内側に押動されて移動することを規制するための押動規制部材44が上下方向に移動可能に設けられている。この押動規制部材44は、ガイド溝43の底部に設けられた押動規制部材付勢手段であるコイルバネ45によって上方に付勢されており、通常は、押動規制部材44の上端が上向き結合面31から上方に突出した状態に保持されている。  Aguide groove 43 in the vertical direction is provided in an inner portion of the center portion of the inner side surface of theengagement release member 41, and theengagement release member 41 is pushed inward and moved in theguide groove 43. Apush restricting member 44 is provided to be able to move in the vertical direction. Thepush restricting member 44 is urged upward by acoil spring 45 that is a push restricting member urging means provided at the bottom of theguide groove 43. Normally, the upper end of thepush restricting member 44 is coupled upward. It is held in a state protruding upward from thesurface 31.

押動規制部材44の前面中央部には、前記係合解除部材41の内側面中央部が進入可能な凹溝44aが前方に向かって開口しており、押動規制部材44がガイド溝43に沿って下方に押し込まれ、押動規制部材44の上端が上向き結合面31と面一になったときに、凹溝44a内に係合解除部材41が進入可能な状態となるように形成されている。  Aconcave groove 44 a into which the central portion of the inner surface of theengagement release member 41 can enter is opened forward in the central portion of the front surface of thepush restricting member 44, and thepush restricting member 44 is formed in theguide groove 43. Theengagement release member 41 is formed so that it can enter the recessedgroove 44a when the upper end of thepush restricting member 44 is flush with theupward coupling surface 31. Yes.

一方、前記流量設定リング52の内周には、上向き結合面31から突出した前記押動規制部材44の上部を収納可能なリング状凹溝52aが設けられており、該リング状凹溝52aの一部に、前記押動規制部材44を下方に向けて押動するための規制解除手段となる押圧突起60が設けられている。この押圧突起60は、流量設定リング52を酸素ガス流量の設定値がゼロとなる位置に回動させたときに、押動規制部材44を下方に押圧するものであって、流量設定リング52を酸素ガス流量の設定値がゼロ以外の位置としたときには押圧突起60が押動規制部材44の位置から外れて押動規制部材44がリング状凹溝52a内に突出した状態となるように形成されている。  On the other hand, on the inner periphery of the flowrate setting ring 52, there is provided a ring-shapedgroove 52a capable of accommodating the upper part of thepush restricting member 44 protruding from theupward coupling surface 31, and the ring-shapedgroove 52a In part, apressing protrusion 60 is provided as a restriction releasing means for pressing the pressing restrictingmember 44 downward. Thepressing protrusion 60 presses the pressing restrictingmember 44 downward when the flowrate setting ring 52 is rotated to a position where the set value of the oxygen gas flow rate becomes zero. When the set value of the oxygen gas flow rate is set to a position other than zero, the pressingprotrusion 60 is removed from the position of the pressing restrictingmember 44 so that the pressing restrictingmember 44 protrudes into the ring-shapedconcave groove 52a. ing.

また、酸素ガス取出ユニット30とガス供給ユニット50とを結合する際の位置合わせ用として、各雄側係合部材59の内側面後部側に上下方向のガイド突片59aがそれぞれ設けられ、下向き結合面51の後部側にはガイド突起61が突設されるとともに、各保持孔36の内側壁部に前記ガイド突片59aが進入するガイド溝36aがそれぞれ設けられ、上向き結合面31の後部側にはガイド突起61が進入するガイド凹部46が設けられている。  In addition, for alignment when the oxygengas extraction unit 30 and thegas supply unit 50 are coupled,vertical guide protrusions 59a are provided on the rear side of the inner surface of eachmale engagement member 59, respectively, and are coupled downward.Guide protrusions 61 are provided on the rear side of thesurface 51, and guidegrooves 36 a into which theguide protrusions 59 a enter are provided on the inner wall portions of the holding holes 36, respectively. Is provided with aguide recess 46 into which theguide protrusion 61 enters.

さらに、流量設定リング52の外周面には、流量設定リング52を回動させる際の操作性を向上させるため、複数の滑り止め突起52bが周方向に設けられており、流量表示部53の流量表示は、ゼロのみを白抜きとしてゼロ以外との識別を確実に行えるようにしている。また、酸素ガス取出ユニット30における前記開閉コック32の開閉表示面32aや残量表示部33も色分けするなどして視認性を向上させている。  Further, on the outer peripheral surface of the flowrate setting ring 52, a plurality ofanti-slip protrusions 52b are provided in the circumferential direction in order to improve operability when the flowrate setting ring 52 is rotated. In the display, only zero is outlined, so that it can be reliably distinguished from non-zero. Further, the visibility is improved by color-coding the open /close display surface 32a and the remainingamount display portion 33 of the open /close cock 32 in the oxygengas extraction unit 30.

このように形成した呼吸用気体供給装置は、複数のガス容器11の口金部11aに酸素ガス取出ユニット30をそれぞれ固着したままの状態で使用され、酸素ガス取出ユニット30にガス供給ユニット50を結合して使用する。通常、酸素ガス取出ユニット30を装着したガス容器11は、充填口77から酸素ガスを充填され、開閉コック32を閉じて酸素ガス取出ユニット30及び口金部11aをフィルムなどの密封部材で密封した状態で使用者の手元に届けられる。  The breathing gas supply device formed in this way is used in a state where the oxygengas extraction unit 30 is fixed to thecap portions 11 a of the plurality of gas containers 11, and thegas supply unit 50 is coupled to the oxygengas extraction unit 30. And use it. Normally, the gas container 11 equipped with the oxygengas extraction unit 30 is filled with oxygen gas from the fillingport 77, the open /close cock 32 is closed, and the oxygengas extraction unit 30 and thebase part 11a are sealed with a sealing member such as a film. Is delivered to the user.

使用者は、密封部材を取り除いた後、係合解除部材41を手前に向けた状態の酸素ガス取出ユニット30の上方から、流量表示部53を手前に向けた状態のガス供給ユニット50を酸素ガス取出ユニット30に押し付けることにより、酸素ガス取出ユニット30にガス供給ユニット50を結合させる。このとき、酸素ガス取出ユニット30の方向とガス供給ユニット50の方向とが合っていない場合は、雄側係合部材59のガイド突片59aが保持孔36のガイド溝36aに入らず、ガイド突起61もガイド凹部46に入らないため、ガス供給ユニット50を酸素ガス取出ユニット30に結合させることができず、誤った状態でガス供給ユニット50が酸素ガス取出ユニット30に組み付けられることはない。  After removing the sealing member, the user moves thegas supply unit 50 in a state where the flowrate display unit 53 is directed forward from above the oxygengas extraction unit 30 in a state where thedisengagement member 41 is directed forward. Thegas supply unit 50 is coupled to the oxygengas extraction unit 30 by being pressed against theextraction unit 30. At this time, if the direction of the oxygengas extraction unit 30 and the direction of thegas supply unit 50 do not match, theguide protrusion 59a of themale engagement member 59 does not enter theguide groove 36a of the holdinghole 36, and the guide protrusion Since 61 does not enter theguide recess 46, thegas supply unit 50 cannot be coupled to the oxygengas extraction unit 30, and thegas supply unit 50 is not assembled to the oxygengas extraction unit 30 in an erroneous state.

酸素ガス取出ユニット30の方向とガス供給ユニット50の方向とが合っている場合は、雄側係合部材59が保持孔36内に進入するとともにガイド突片59aがガイド溝36aに進入し、保持孔36内に進入した雄側係合部材59の先端のガイド面58bが雌側係合部材37のガイド面37cに摺接し、板バネ40の付勢力に抗して雌側係合部材37の係合部37aを外側に押し拡げて雌側係合部材37を非係合位置に回動させる。係合突部58が係合部37aの下方に通過すると、板バネ40の付勢力で雌側係合部材37が係合位置に復帰し、保持孔36内に突出した係合部37aが係合突部58の段部58aに係合することにより、酸素ガス取出ユニット30とガス供給ユニット50とが結合状態に保持される。同時に、雄側継手部81及び雌側継手部82の連結端35,57が凹凸嵌合することによって逆止弁80が開いた状態となる。また、酸素ガス取出ユニット30とガス供給ユニット50との結合が完全に行われず、雌側係合部材37が非係合位置にあるときには、周辺の部材と異なる色調の前記非係合表示部37eが酸素ガス取出ユニット30の外周に突出したままになっているので、両ユニット30,50の結合状態が不十分であることを使用者に知らせることができる。  When the direction of the oxygengas extraction unit 30 and the direction of thegas supply unit 50 match, themale engagement member 59 enters the holdinghole 36 and theguide protrusion 59a enters theguide groove 36a and is held. Theguide surface 58b at the tip of themale engagement member 59 that has entered thehole 36 is in sliding contact with theguide surface 37c of thefemale engagement member 37 and resists the biasing force of theleaf spring 40. The engagingportion 37a is pushed outward to rotate thefemale engaging member 37 to the non-engaging position. When theengagement protrusion 58 passes below theengagement portion 37a, thefemale engagement member 37 returns to the engagement position by the biasing force of theleaf spring 40, and theengagement portion 37a protruding into the holdinghole 36 is engaged. By engaging with the steppedportion 58a of themating protrusion 58, the oxygengas extraction unit 30 and thegas supply unit 50 are held in a coupled state. At the same time, thecheck valve 80 is opened when the coupling ends 35 and 57 of the male sidejoint part 81 and the female sidejoint part 82 are unevenly fitted. Further, when the oxygengas extraction unit 30 and thegas supply unit 50 are not completely coupled and thefemale engagement member 37 is in the disengagement position, thedisengagement display portion 37e having a color tone different from that of the peripheral members. Is still protruding from the outer periphery of the oxygengas extraction unit 30, so that the user can be informed that the combined state of theunits 30 and 50 is insufficient.

ガス供給ユニット50を酸素ガス取出ユニット30に結合させた後、残量表示部33で残量を確認してから開閉コック32を開いてガス容器11内から酸素ガスを供給可能な状態とし、流量設定リング52を回して酸素ガスの流量をあらかじめ設定された流量に設定し、また、必要に応じて供給切替操作部54を操作して供給状態を切り替える。  After thegas supply unit 50 is coupled to the oxygengas extraction unit 30, the remainingamount display unit 33 confirms the remaining amount, and then opens the open /close cock 32 so that oxygen gas can be supplied from the gas container 11, and the flow rate The settingring 52 is turned to set the flow rate of oxygen gas to a preset flow rate, and the supplyswitching operation unit 54 is operated as necessary to switch the supply state.

これにより、ガス容器11内の酸素ガスは、酸素ガス取出ユニット30における容器弁部71の開状態となった容器元弁74を通り、減圧部72の減圧弁78で所定圧力に減圧され、開状態となった逆止弁80を通り、雄側継手部81及び雌側継手部82を通ってガス供給ユニット50内に入り、流量調節弁83で所定流量に設定された後、チューブ12を介してカニューラに呼吸用気体として供給される。  As a result, the oxygen gas in the gas container 11 passes through the containermain valve 74 in the open state of thecontainer valve part 71 in the oxygengas extraction unit 30 and is decompressed to a predetermined pressure by thedecompression valve 78 of thedecompression part 72. After passing through thecheck valve 80 in the state, passes through the malejoint portion 81 and the femalejoint portion 82 and enters thegas supply unit 50, and after being set to a predetermined flow rate by the flowrate adjusting valve 83, Supplied to the cannula as a breathing gas.

ガス容器11内の酸素ガスの残量が少なくなった場合は、開閉コック32を閉じるとともに、流量設定リング52を回して流量表示部53にゼロを表示させる。流量設定リング52をゼロの位置にすることにより、コイルバネ45の付勢力で使用中には上端部が上向き結合面31から上方に突出していた押動規制部材44を流量設定リング52に設けられた押圧突起60が下方に押圧し、押動規制部材44の凹溝44a内に係合解除部材41が進入可能な状態となる。  When the remaining amount of oxygen gas in the gas container 11 decreases, the open /close cock 32 is closed and the flowrate setting ring 52 is turned to display zero on the flowrate display unit 53. By setting the flowrate setting ring 52 to the zero position, the flowrate setting ring 52 is provided with apush restricting member 44 whose upper end protrudes upward from thecoupling surface 31 during use by the biasing force of thecoil spring 45. Thepressing protrusion 60 is pressed downward, and theengagement releasing member 41 can enter the recessedgroove 44 a of the pressing restrictingmember 44.

この状態で、板バネ40の付勢力に抗して係合解除部材41を正面から後方に向かって押動すると、押動規制部材44の内側面中央部が凹溝44a内に進入するとともに、係合解除部材41の内側面両端部が係合解除用アーム37bを後方に押動し、雌側係合部材37を軸部材39を中心に回動させて非係合位置とする。これにより、係合部37aが保持孔36の壁面内に没した状態となり、係合部37aと段部58aとの係合状態が解除され、酸素ガス取出ユニット30からガス供給ユニット50を取り外すことができる。  In this state, when theengagement release member 41 is pushed rearward from the front against the urging force of theleaf spring 40, the central portion of the inner side surface of thepush restriction member 44 enters theconcave groove 44a, and Both end portions of the inner surface of thedisengagement member 41 push thedisengagement arm 37b backward, and thefemale engagement member 37 is rotated about theshaft member 39 to be in the disengagement position. As a result, theengagement portion 37a is immersed in the wall surface of the holdinghole 36, the engagement state between theengagement portion 37a and the steppedportion 58a is released, and thegas supply unit 50 is removed from the oxygengas extraction unit 30. Can do.

一方、酸素ガス取出ユニット30からのガス供給ユニット50の取り外しは、流量設定リング52がゼロの位置にあるときしか行えないため、ガス容器11内の酸素ガスを呼吸用気体として使用中は、すなわち、流量設定リング52がゼロ以外に設定されているときには、押動規制部材44の上端部が流量設定リング52のリング状凹溝52a内に突出して凹溝44aが上方に移動しているので、押動規制部材44によって係合解除部材41の後方への移動が規制され、係合解除部材41によって雌側係合部材37を非係合位置に回動させることはできない。したがって、使用中にガス供給ユニット50が外れることはなく、酸素ガスの供給を確実に継続することができる。  On the other hand, since thegas supply unit 50 can be removed from the oxygengas extraction unit 30 only when the flowrate setting ring 52 is in the zero position, the oxygen gas in the gas container 11 is being used as a breathing gas. When the flowrate setting ring 52 is set to a value other than zero, the upper end portion of thepush restricting member 44 protrudes into the ring-shapedconcave groove 52a of the flowrate setting ring 52, and theconcave groove 44a moves upward. The rearward movement of theengagement release member 41 is restricted by the pushmovement restriction member 44, and thefemale engagement member 37 cannot be rotated to the non-engagement position by theengagement release member 41. Therefore, thegas supply unit 50 is not detached during use, and the supply of oxygen gas can be reliably continued.

すなわち、流量をゼロに設定しなければガス供給ユニット50を取り外せないため、所定流量で酸素を供給している使用中にガス供給ユニット50が外れることはなく、予期せぬときに酸素ガスの供給が絶たれるおそれもない。さらに、使用者が確認する必要のある流量表示部53、供給状態表示部55、開閉コック32の開閉表示面32a、残量表示部33を全て正面から視認可能な状態としているので、使用中にもこれらを容易に確認することができる。  That is, since thegas supply unit 50 cannot be removed unless the flow rate is set to zero, thegas supply unit 50 will not come off during use while supplying oxygen at a predetermined flow rate, and supply of oxygen gas at an unexpected time. There is no risk of being cut off. Further, since the flowrate display unit 53, the supplystatus display unit 55, the open /close display surface 32a of the open /close cock 32, and the remainingamount display unit 33 that the user needs to check are all visible from the front, These can be easily confirmed.

また、開閉コック32を閉じ位置に回すことを忘れてガス供給ユニット50を取り外してしまった場合は、酸素ガス取出ユニット30の酸素ガス導出経路70aに、酸素ガス取出ユニット30にガス供給ユニット50を結合しときにのみ開弁する逆止弁80が設けられているため、酸素ガス取出ユニット30の連結端35から酸素ガスが噴出することはなく、安全性を確保できるとともに、酸素ガスが無駄に消費されることを防止できる。万一、逆止弁80が故障してガス供給ユニット50を取り外したときに閉じ状態にならなかったとしても、酸素ガス導出経路70aに設けた減圧弁78で十分に減圧されているため、ガス容器11内に高圧充填された酸素ガスが急激に噴出することはない。  If thegas supply unit 50 is removed because the opening / closingcock 32 is forgotten to be closed, thegas supply unit 50 is connected to the oxygengas extraction unit 30 in the oxygengas extraction path 70a of the oxygengas extraction unit 30. Since thecheck valve 80 that opens only when coupled is provided, the oxygen gas is not ejected from the connectingend 35 of the oxygengas extraction unit 30, and safety can be ensured, and oxygen gas is wasted. It can be prevented from being consumed. Even if thecheck valve 80 fails and does not close when thegas supply unit 50 is removed, the pressure is sufficiently reduced by thepressure reducing valve 78 provided in the oxygengas outlet path 70a. The oxygen gas filled in the container 11 with high pressure does not spout suddenly.

このように、酸素ガス取出ユニット30にガス供給ユニット50を結合させる際には、ガス供給ユニット50をガス容器11の軸線方向上方からまっすぐに酸素ガス取出ユニット30に押し付けるだけでよく、他の操作を全く必要としないため、ガス供給ユニット50の結合を片手でも容易に行うことができる。また、酸素ガス取出ユニット30からガス供給ユニット50を取り外す際には、流量設定リング52で流量をゼロに設定して係合解除部材41を正面から押し込むだけでよく、ガス供給ユニット50の取り外しも簡単な操作で容易に行うことができる。  In this way, when thegas supply unit 50 is coupled to the oxygengas extraction unit 30, it is only necessary to press thegas supply unit 50 straight from above the axial direction of the gas container 11 against the oxygengas extraction unit 30, and other operations. Therefore, thegas supply unit 50 can be easily coupled with one hand. Further, when removing thegas supply unit 50 from the oxygengas extraction unit 30, it is only necessary to set the flow rate to zero with the flowrate setting ring 52 and push thedisengagement member 41 from the front. It can be easily performed with a simple operation.

したがって、ガス容器11の交換に伴うガス供給ユニット50の着脱を使用者が容易かつ短時間で行うこと可能となり、ガス容器11を交換する際の使用者の負担を軽減することができる。また、酸素ガスの充填などでガス容器11を搬送する際には、ガス容器11に酸素ガス取出ユニット30のみが取り付けられた状態で行うため、酸素ガス取出ユニット30はガス容器11の本数と同じ数を必要とするが、ガス供給ユニット50は使用者の人数分だけ用意すればよいことから、呼吸用気体供給装置10に要するコストだけでなく、医療費の削減を図ることができる。  Therefore, the user can easily attach and detach thegas supply unit 50 accompanying the replacement of the gas container 11 in a short time, and the burden on the user when replacing the gas container 11 can be reduced. Further, when the gas container 11 is transported by filling with oxygen gas or the like, since it is performed in a state where only the oxygengas extraction unit 30 is attached to the gas container 11, the oxygengas extraction unit 30 is the same as the number of the gas containers 11. Although the number ofgas supply units 50 need only be provided for the number of users, not only the cost required for the breathinggas supply device 10 but also the medical cost can be reduced.

図15は、液体酸素を貯留した液体酸素容器から呼吸用気体を供給する液化酸素式医療用酸素ガス供給機に本発明の呼吸用気体供給装置を適用した一例を示している。液体酸素容器90から呼吸用気体を供給する場合、液体酸素容器90には、酸素ガスを供給するための機器として、蒸発器91,安全弁92及び圧力調節弁93があらかじめ設けられているので、酸素ガス取出ユニット94には逆止弁95を設けておくだけでよい。酸素ガス取出ユニット94に、前記同様に形成した雌側継手部82やガス供給ユニット50との結合構造を設けておくことにより、前記形態例で説明したガス供給ユニット50を、同じようにして着脱して用いることができる。  FIG. 15 shows an example in which the respiratory gas supply device of the present invention is applied to a liquefied oxygen medical oxygen gas supply device that supplies a respiratory gas from a liquid oxygen container that stores liquid oxygen. When supplying the breathing gas from theliquid oxygen container 90, theliquid oxygen container 90 is preliminarily provided with anevaporator 91, asafety valve 92, and apressure control valve 93 as devices for supplying oxygen gas. Thegas extraction unit 94 only needs to be provided with acheck valve 95. By providing the oxygengas extraction unit 94 with a coupling structure with the femalejoint portion 82 and thegas supply unit 50 formed in the same manner as described above, thegas supply unit 50 described in the embodiment can be attached and detached in the same manner. Can be used.

なお、呼吸用気体供給装置における各部の構造、形状は任意であり、例えば、供給状態切替手段を省略することもできる。前記形態例では、医療用酸素ガス供給源として、高圧の酸素を充填した医療用酸素ガス容器及び液体酸素容器内の液体酸素を蒸発器で気化させた酸素ガスを供給する液化酸素式医療用酸素ガス供給機を例示したが、医療用酸素ガス供給源には、病院内に設けられている院内アウトレットバルブ、病院内で使用される院内酸素ボンベなどの各種医療用酸素ガス供給源に対応することが可能である。さらには、PSA式酸素濃縮装置、膜式酸素濃縮装置などの酸素濃縮装置に装着して使用することもできる。  In addition, the structure and shape of each part in the breathing gas supply device are arbitrary, and for example, the supply state switching means can be omitted. In the embodiment, as a medical oxygen gas supply source, a medical oxygen gas container filled with high-pressure oxygen and a liquefied oxygen medical oxygen for supplying oxygen gas obtained by vaporizing liquid oxygen in the liquid oxygen container with an evaporator Although a gas supply machine was illustrated, the medical oxygen gas supply source should correspond to various medical oxygen gas supply sources such as a hospital outlet valve provided in the hospital and a hospital oxygen cylinder used in the hospital. Is possible. Furthermore, it can be used by being attached to an oxygen concentrator such as a PSA oxygen concentrator or a membrane oxygen concentrator.

また、酸素ガス取出ユニットに組み込まれる減圧弁は、医療用酸素ガス供給源からの酸素供給圧力が低い場合や医療用酸素ガス供給源に減圧弁が設けられている場合には、省略することができる。同様に、医療用酸素ガス供給源が、元弁、残量計、充填口、安全弁、フィルタを備えている場合は、これらを酸素ガス取出ユニットに設けなくてもよく、ガス供給ユニットの供給状態切替手段を省略することもできる。  The pressure reducing valve incorporated in the oxygen gas extraction unit may be omitted when the oxygen supply pressure from the medical oxygen gas supply source is low or when the pressure reducing valve is provided in the medical oxygen gas supply source. it can. Similarly, when the medical oxygen gas supply source includes a main valve, a fuel gauge, a filling port, a safety valve, and a filter, these may not be provided in the oxygen gas extraction unit, and the supply state of the gas supply unit The switching means can be omitted.

さらに、前記形態例では、ガス容器の軸線と酸素ガス取出口の軸線とが一致しているガス容器を使用した場合の最適な構造を例示したが、ガス容器の軸線と酸素ガス取出口の軸線とが交わる場合は、酸素ガス取出口の軸線を基準として前記同様の構造を採用することが好ましい。  Furthermore, in the said embodiment, although the optimal structure at the time of using the gas container with which the axis line of a gas container and the axis line of an oxygen gas extraction port corresponded was illustrated, the axis line of a gas container and the axis line of an oxygen gas extraction port In the case of crossing, it is preferable to adopt the same structure as described above with reference to the axis of the oxygen gas outlet.

10…呼吸用気体供給装置、11…医療用酸素ガス容器、11a…口金部、12…チューブ、30…酸素ガス取出ユニット、31…上向き結合面、32…開閉コック、32a…開閉表示面、33…残量表示部、34…雄ねじ部、35…連結端、36…保持孔、36a…ガイド溝、37…雌側係合部材、37a…係合部、37b…係合解除用アーム、37c…ガイド面、37d…外側面、37e…非係合表示部、38…係合部材支持溝、39…軸部材、40…板バネ、41…係合解除部材、42…係合解除部材収容溝、43…ガイド溝、44…押動規制部材、44a…凹溝、45…コイルバネ、46…ガイド凹部、50…ガス供給ユニット、51…下向き結合面、52…流量設定リング、52a…リング状凹溝、52b…滑り止め突起、53…流量表示部、54…供給切替操作部、55…供給状態表示部、56…ジョイント、56a…連結部、56b…チューブ接続部、57…連結端、58…係合突部、58a…段部、58b…ガイド面、59…雄側係合部材、59a…ガイド突片、60…押圧突起、61…ガイド突起、70…酸素ガス導出経路、70a…酸素ガス取出ユニット30の酸素ガス導出経路、70b…ガス供給ユニット50内の酸素ガス導出経路、71…容器弁部、72…減圧部、73…容器連通部、74…容器元弁、75…残量計、76…安全弁、77…充填口、78…減圧弁、79…フィルタ、80…逆止弁、81…雄側継手部、82…雌側継手部、83…流量調節弁、84…供給状態切替手段、85…ジョイント接続部、90…液体酸素容器、91…蒸発器、92…安全弁、93…圧力調節弁、94…酸素ガス取出ユニット、95…逆止弁、96…ガス供給ユニット  DESCRIPTION OFSYMBOLS 10 ... Breathing gas supply apparatus, 11 ... Medical oxygen gas container, 11a ... Base part, 12 ... Tube, 30 ... Oxygen gas extraction unit, 31 ... Upward coupling surface, 32 ... Opening / closing cock, 32a ... Opening / closing display surface, 33 ... remaining amount display part, 34 ... male screw part, 35 ... coupling end, 36 ... holding hole, 36a ... guide groove, 37 ... female side engaging member, 37a ... engaging part, 37b ... disengaging arm, 37c ... Guide surface, 37d ... outer surface, 37e ... non-engagement display, 38 ... engagement member support groove, 39 ... shaft member, 40 ... plate spring, 41 ... engagement release member, 42 ... engagement release member receiving groove, DESCRIPTION OFSYMBOLS 43 ... Guide groove, 44 ... Push control member, 44a ... Concave groove, 45 ... Coil spring, 46 ... Guide recessed part, 50 ... Gas supply unit, 51 ... Downward coupling surface, 52 ... Flow rate setting ring, 52a ... Ring-shapedconcave groove 52b ...Anti-slip projection 53 ...Quantity display part 54 ... Supply switchingoperation part 55 ... Supplystate display part 56 ... Joint 56a ...Connection part 56b ... Tube connection part 57 ...Connection end 58 ...Engagement protrusion part 58a ... Steppart 58b ... guide surface, 59 ... male side engaging member, 59a ... guide protrusion, 60 ... pressing protrusion, 61 ... guide protrusion, 70 ... oxygen gas outlet path, 70a ... oxygen gas outlet path of the oxygengas extraction unit 30, 70b ... Oxygen gas lead-out path in thegas supply unit 50, 71 ... Container valve part, 72 ... Decompression part, 73 ... Container communication part, 74 ... Container valve, 75 ... Fuel gauge, 76 ... Safety valve, 77 ... Filling port, 78 ... Pressure reducing valve, 79 ... Filter, 80 ... Check valve, 81 ... Male side joint part, 82 ... Female side joint part, 83 ... Flow control valve, 84 ... Supply state switching means, 85 ... Joint connection part, 90 ... Liquid oxygen container, 91 ... evaporator, 92 Safety valve, 93 ... pressure control valve, 94 ... oxygen gas takeout unit, 95 ... check valve, 96 ... Gas supply unit

Claims (13)

Translated fromJapanese
医療用酸素ガス供給源から供給される酸素ガスを流量調節して使用者に供給する呼吸用気体供給装置において、前記医療用酸素ガス供給源の酸素ガス取出口に固着される酸素ガス取出ユニットと、該酸素ガス取出ユニットに着脱可能に結合するガス供給ユニットとを備え、前記酸素ガス取出ユニットは、該酸素ガス取出ユニットに前記ガス供給ユニットが結合しているときにのみ開弁する逆止弁を備え、前記ガス供給ユニットは、前記酸素ガス取出ユニットからガス供給ユニットに導入された酸素ガスの流量を設定する流量調節弁を備え、酸素ガス取出ユニット及びガス供給ユニットは、互いに係合して酸素ガス取出ユニットとガス供給ユニットとを結合させる係合手段をそれぞれ備え、前記酸素ガス取出ユニットは、前記係合手段の係合状態を解除して酸素ガス取出ユニットとガス供給ユニットとを分離可能とする係合解除手段及び該係合解除手段の係合解除動作を規制する係合解除規制手段を備え、前記ガス供給ユニットは、前記流量調節弁で設定した酸素ガスの流量がゼロに設定されているときに、前記係合解除規制手段による前記係合解除手段の係合解除動作の規制を解除する規制解除手段を備え
前記係合手段は、
前記ガス供給ユニットに設けられた係合突部を有する雄側係合部材と、
前記酸素ガス取出ユニットに設けられた前記雄側係合部材の係合突部に対して係合位置と非係合位置とに移動可能に形成された雌側係合部材と、
前記雌側係合部材を前記非係合位置に押動する前記係合解除手段である押動部材と
を備えている呼吸用気体供給装置。
In a breathing gas supply device for supplying oxygen gas supplied from a medical oxygen gas supply source to a user by adjusting the flow rate, an oxygen gas extraction unit fixed to an oxygen gas outlet of the medical oxygen gas supply source; A check valve that opens only when the gas supply unit is connected to the oxygen gas extraction unit. The gas supply unit includes a flow rate adjustment valve for setting a flow rate of oxygen gas introduced from the oxygen gas extraction unit to the gas supply unit, and the oxygen gas extraction unit and the gas supply unit are engaged with each other. Engaging means for coupling the oxygen gas take-out unit and the gas supply unit are provided, and the oxygen gas take-out unit is engaged with the engaging means. The disengagement means for disengaging the oxygen gas extraction unit and the gas supply unit and the disengagement restricting means for restricting the disengagement operation of the disengagement means, the gas supply unit comprising: When the flow rate of oxygen gas set by the flow rate control valve is set to zero, it comprises a restriction release means for releasing the restriction of the disengagement operation of the disengagement means by the disengagement restriction means,
The engaging means includes
A male engagement member having an engagement protrusion provided in the gas supply unit;
A female engagement member formed to be movable between an engagement position and a non-engagement position with respect to an engagement protrusion of the male engagement member provided in the oxygen gas extraction unit;
A pushing member as the disengaging means for pushing the female engagement member to the disengaged position;
A breathing gas supply device.
医療用酸素ガス供給源から供給される酸素ガスを流量調節して使用者に供給する呼吸用気体供給装置において、前記医療用酸素ガス供給源の酸素ガス取出口に固着される酸素ガス取出ユニットと、該酸素ガス取出ユニットに着脱可能に結合するガス供給ユニットとを備え、前記酸素ガス取出ユニットは、該酸素ガス取出ユニットに前記ガス供給ユニットが結合しているときにのみ開弁する逆止弁を備え、前記ガス供給ユニットは、前記酸素ガス取出ユニットからガス供給ユニットに導入された酸素ガスの流量を設定する流量調節弁を備え、酸素ガス取出ユニット及びガス供給ユニットは、互いに係合して酸素ガス取出ユニットとガス供給ユニットとを結合させる係合手段をそれぞれ備え、前記酸素ガス取出ユニットは、前記係合手段の係合状態を解除して酸素ガス取出ユニットとガス供給ユニットとを分離可能とする係合解除手段及び該係合解除手段の係合解除動作を規制する係合解除規制手段を備え、前記ガス供給ユニットは、前記流量調節弁で設定した酸素ガスの流量がゼロに設定されているときに、前記係合解除規制手段による前記係合解除手段の係合解除動作の規制を解除する規制解除手段を備え、
前記酸素ガス取出ユニット及び前記ガス供給ユニットは、それぞれ形成された結合面を当接させた状態で結合し、
前記係合手段は、
ガス供給ユニットの結合面から酸素ガス取出ユニットに向けて突設され、先端部側面に係合突部が設けられた雄側係合部材と、
酸素ガス取出ユニットの結合面に設けられて前記雄側係合部材が進入する保持孔の側壁部に前記酸素ガス取出口の軸線と直交する方向に移動して前記雄側係合部材の係合突部に対して係合位置と非係合位置とに移動可能に形成された雌側係合部材とを備え、
前記雌側係合部材は、前記非係合位置において前記酸素ガス取出ユニットの結合面の外周面より突出するように形成され、前記雌側係合部材の色調と異なる色調の非係合表示部を上面に設けている
呼吸用気体供給装置。
In a breathing gas supply device for supplying oxygen gas supplied from a medical oxygen gas supply source to a user by adjusting the flow rate, an oxygen gas extraction unit fixed to an oxygen gas outlet of the medical oxygen gas supply source; A check valve that opens only when the gas supply unit is connected to the oxygen gas extraction unit. The gas supply unit includes a flow rate adjustment valve for setting a flow rate of oxygen gas introduced from the oxygen gas extraction unit to the gas supply unit, and the oxygen gas extraction unit and the gas supply unit are engaged with each other. Engaging means for coupling the oxygen gas take-out unit and the gas supply unit are provided, and the oxygen gas take-out unit is engaged with the engaging means. The disengagement means for disengaging the oxygen gas extraction unit and the gas supply unit and the disengagement restricting means for restricting the disengagement operation of the disengagement means, the gas supply unit comprising: When the flow rate of oxygen gas set by the flow rate control valve is set to zero, it comprises a restriction release means for releasing the restriction of the disengagement operation of the disengagement means by the disengagement restriction means,
The oxygen gas extraction unit and the gas supply unit are combined in a state in which the formed coupling surfaces are in contact with each other,
The engaging means includes
A male-side engagement member that protrudes from the coupling surface of the gas supply unit toward the oxygen gas extraction unit, and that has an engagement protrusion on the side surface of the tip.
The male side engaging member is engaged by moving in a direction perpendicular to the axis of the oxygen gas outlet port to a side wall portion of a holding hole that is provided on the coupling surface of the oxygen gas extracting unit and into which the male side engaging member enters. A female engagement member formed to be movable between an engagement position and a non-engagement position with respect to the protrusion,
The female engagement member is formed so as to protrude from the outer peripheral surface of the coupling surface of the oxygen gas extraction unit at the non-engagement position, and the non-engagement display unit having a color tone different from the color tone of the female engagement member. A breathing gas supply device.
前記雌側係合部材は、前記係合位置において前記酸素ガス取出ユニットの結合面の外周面と面一になる外側面を有する請求項2記載の呼吸用気体供給装置。The respiratory gas supply device according to claim 2, wherein the female engagement member has an outer surface that is flush with an outer peripheral surface of a coupling surface of the oxygen gas extraction unit at the engagement position.医療用酸素ガス供給源から供給される酸素ガスを流量調節して使用者に供給する呼吸用気体供給装置において、前記医療用酸素ガス供給源の酸素ガス取出口に固着される酸素ガス取出ユニットと、該酸素ガス取出ユニットに着脱可能に結合するガス供給ユニットとを備え、前記酸素ガス取出ユニットは、該酸素ガス取出ユニットに前記ガス供給ユニットが結合しているときにのみ開弁する逆止弁を備え、前記ガス供給ユニットは、前記酸素ガス取出ユニットからガス供給ユニットに導入された酸素ガスの流量を設定する流量調節弁を備え、酸素ガス取出ユニット及びガス供給ユニットは、互いに係合して酸素ガス取出ユニットとガス供給ユニットとを結合させる係合手段をそれぞれ備え、前記酸素ガス取出ユニットは、前記係合手段の係合状態を解除して酸素ガス取出ユニットとガス供給ユニットとを分離可能とする係合解除手段及び該係合解除手段の係合解除動作を規制する係合解除規制手段を備え、前記ガス供給ユニットは、前記流量調節弁で設定した酸素ガスの流量がゼロに設定されているときに、前記係合解除規制手段による前記係合解除手段の係合解除動作の規制を解除する規制解除手段を備え、
前記酸素ガス取出ユニット及び前記ガス供給ユニットは、前記酸素ガス取出口の軸線と直交する方向にそれぞれ形成された結合面を当接させた状態で結合し、前記酸素ガス取出口の軸線方向に分離可能に形成され、
前記係合手段は、
ガス供給ユニットの結合面から酸素ガス取出ユニットに向けて突設され、先端部側面に係合突部が設けられた雄側係合部材と、
酸素ガス取出ユニットの結合面に設けられて前記雄側係合部材が進入する保持孔の側壁部に前記酸素ガス取出口の軸線と直交する方向に移動して前記雄側係合部材の係合突部に対して係合位置と非係合位置とに移動可能に形成された雌側係合部材と、
該雌側係合部材を前記非係合位置から前記係合位置に向けて付勢する雌側係合部材付勢手段と、
前記酸素ガス取出口の軸線と直交する方向に移動して前記雌側係合部材を前記非係合位置に押動する前記係合解除手段である押動部材と、
前記酸素ガス取出口の軸線方向に移動して前記押動部材が前記雌側係合部材を前記非係合位置に押動する方向に移動することを規制する押動規制位置と押動規制解除位置とに移動可能に設けられて前記押動規制位置では酸素ガス取出ユニットの結合面からガス供給ユニットに向けて突出した状態になる前記係合解除規制手段である押動規制部材と、
該押動規制部材を前記押動規制位置に付勢する押動規制部材付勢手段と
を備えている呼吸用気体供給装置。
In a breathing gas supply device for supplying oxygen gas supplied from a medical oxygen gas supply source to a user by adjusting the flow rate, an oxygen gas extraction unit fixed to an oxygen gas outlet of the medical oxygen gas supply source; A check valve that opens only when the gas supply unit is connected to the oxygen gas extraction unit. The gas supply unit includes a flow rate adjustment valve for setting a flow rate of oxygen gas introduced from the oxygen gas extraction unit to the gas supply unit, and the oxygen gas extraction unit and the gas supply unit are engaged with each other. Engaging means for coupling the oxygen gas take-out unit and the gas supply unit are provided, and the oxygen gas take-out unit is engaged with the engaging means. The disengagement means for disengaging the oxygen gas extraction unit and the gas supply unit and the disengagement restricting means for restricting the disengagement operation of the disengagement means, the gas supply unit comprising: When the flow rate of oxygen gas set by the flow rate control valve is set to zero, it comprises a restriction release means for releasing the restriction of the disengagement operation of the disengagement means by the disengagement restriction means,
The oxygen gas take-out unit and the gas supply unit are coupled in a state where contact surfaces formed in a direction orthogonal to the axis of the oxygen gas take-out port are in contact with each other, and are separated in the axial direction of the oxygen gas take-out port Formed possible,
The engaging means includes
A male-side engagement member that protrudes from the coupling surface of the gas supply unit toward the oxygen gas extraction unit, and that has an engagement protrusion on the side surface of the tip.
The male side engaging member is engaged by moving in a direction perpendicular to the axis of the oxygen gas outlet port to a side wall portion of a holding hole that is provided on the coupling surface of the oxygen gas extracting unit and into which the male side engaging member enters. A female engagement member formed to be movable between an engagement position and a non-engagement position with respect to the protrusion;
Female-side engagement member urging means for urging the female-side engagement member from the non-engagement position toward the engagement position;
A pushing member that is the disengaging means that moves in a direction perpendicular to the axis of the oxygen gas outlet and pushes the female engagement member to the disengaged position;
A push restriction position and a push restriction release that move in the axial direction of the oxygen gas outlet and restrict the push member from moving in the direction of pushing the female engagement member to the non-engagement position. A push restricting member which is a disengagement restricting means which is provided so as to be movable to a position and protrudes from the coupling surface of the oxygen gas extraction unit toward the gas supply unit at the push restricting position;
A breathing gas supply device comprising: a pushing restriction member urging means for urging the pushing restriction member to the pushing restriction position.
前記雄側係合部材は、先端部で雌側係合部材を雌側係合部材付勢手段付勢力に抗して前記非係合位置に押動し、前記係合突部に対して雌側係合部材が係合可能な位置まで雄側係合部材を保持孔内に進入させたときに、雌側係合部材付勢手段の付勢力によって雌側係合部材が係合突部との係合位置に移動して雄側係合部材と雌側係合部材とが係合して酸素ガス取出ユニットとガス供給ユニットとを結合状態に保持し、
前記流量調節弁は、前記酸素ガス取出口の軸線方向の回転軸を中心として回転する流量調節ダイヤルをガス供給ユニットの外周部に備え、該流量調節ダイヤルの結合面側には、酸素ガスの流量をゼロに設定したときに前記押動規制部材を前記押動規制解除位置に移動させる前記規制解除手段が設けられている請求項4記載の呼吸用気体供給装置。
The male side engaging member pushes the female side engaging member to the non-engaging position against the urging force of the female side engaging member urging means atthe tip, and against the engaging protrusion When the male engagement member is advanced into the holding hole to a position where the female engagement member can be engaged, the female engagement member is engaged by the urging force of the female engagement member urging means. And the male engagement member and the female engagement member are engaged to hold the oxygen gas extraction unit and the gas supply unit in a coupled state.
The flow rate adjustment valve has a flow rate adjustment dial that rotates about the axis of rotation of the oxygen gas outlet in the axial direction on the outer periphery of the gas supply unit, and the flow rate of oxygen gas is on the coupling surface side of the flow rate adjustment dial.The breathing gas supply device according to claim 4, wherein the restriction release means is provided to move the push restriction member to the push restriction release position when the value is set to zero.
前記ガス供給ユニットは、該ガス供給ユニットから供給する酸素ガスを連続して供給する連続供給と、酸素ガスを呼吸に同調させて供給する同調供給とを切り替える供給状態切替手段を備えている請求項1乃至5のいずれか1項記載の呼吸用気体供給装置。The gas supply unit includes supply state switching means for switching between continuous supply for continuously supplying oxygen gas supplied from the gas supply unit and synchronized supply for supplying oxygen gas in synchronization with respiration. The respiratory gas supply device according to any one of 1 to 5.前記医療用酸素ガス供給源が、酸素ガスを高圧充填した医療用酸素ガス容器であり、前記酸素ガス取出ユニットは、前記医療用酸素ガス容器から導出された酸素ガスを減圧する減圧弁を備えている請求項1乃至6のいずれか1項記載の呼吸用気体供給装置。The medical oxygen gas supply source is a medical oxygen gas container filled with oxygen gas at a high pressure, and the oxygen gas extraction unit includes a pressure reducing valve for decompressing the oxygen gas derived from the medical oxygen gas container. The respiratory gas supply device according to any one of claims 1 to 6.前記酸素ガス取出ユニットは、前記医療用酸素ガス容器からの酸素ガス導出経路を開閉する容器元弁を備えている請求項7記載の呼吸用気体供給装置。The breathing gas supply device according to claim 7, wherein the oxygen gas extraction unit includes a container main valve that opens and closes an oxygen gas lead-out path from the medical oxygen gas container.前記酸素ガス取出ユニットは、前記医療用酸素ガス容器内の酸素ガスの残量を表示する残量計を備えている請求項7又は8記載の呼吸用気体供給装置。The respiratory gas supply device according to claim 7 or 8, wherein the oxygen gas extraction unit includes a fuel gauge that displays a remaining amount of oxygen gas in the medical oxygen gas container.前記酸素ガス取出ユニットは、前記医療用酸素ガス容器内に酸素ガスを充填する充填口を備えている請求項7乃至9のいずれか1項記載の呼吸用気体供給装置。The respiratory gas supply apparatus according to any one of claims 7 to 9, wherein the oxygen gas extraction unit includes a filling port for filling the medical oxygen gas container with oxygen gas.前記酸素ガス取出ユニットは、前記医療用酸素ガス容器内の圧力が上昇したときに開弁する安全弁を備えている請求項7乃至10のいずれか1項記載の呼吸用気体供給装置。The respiratory gas supply device according to any one of claims 7 to 10, wherein the oxygen gas extraction unit includes a safety valve that opens when a pressure in the medical oxygen gas container increases.前記酸素ガス取出ユニットは、前記医療用酸素ガス容器から取り出した酸素ガス中の塵埃を除去するフィルタを備えている請求項7乃至11のいずれか1項記載の呼吸用気体供給装置。The respiratory gas supply device according to any one of claims 7 to 11, wherein the oxygen gas extraction unit includes a filter that removes dust in oxygen gas extracted from the medical oxygen gas container.前記酸素ガス取出口の軸線は、前記医療用酸素ガス容器の軸線と一致している請求項7乃至12のいずれか1項記載の呼吸用気体供給装置。The respiratory gas supply device according to any one of claims 7 to 12, wherein an axis of the oxygen gas outlet is coincident with an axis of the medical oxygen gas container.
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