Disclosure of Invention
The invention aims at: overcomes the defects of the prior art and provides a nose catheter for preventing the retrolingual drop. The invention provides a nose catheter capable of preventing a tongue from falling back, which comprises a catheter unit, a joint unit, a supporting guide core and a nose plug; on the one hand, the catheter unit, the joint unit and the supporting guide core are matched in structure and size, the supporting guide core with the soft guide core can be inserted into the lumen of the hollow hose through the joint unit to serve as a supporting structure when the hollow hose is inserted into the tube, the second joint of the supporting guide core is matched with the joint tail end of the joint unit and can be fixedly connected with the joint tail end, and the hollow hose inserted into the supporting guide core forms a bending shape matched with a nasopharyngeal cavity channel in the inserting process; on the other hand, the catheter unit is matched with the nasal plug for use, and the position of the catheter is fixed through the limit between the nasal plug and the hollow hose, so that the movement of the catheter in the nasal cavity is limited. The invention can obviously improve the success rate of the placement of the nose catheter with small size, and obviously reduce the occurrence rate of nasal mucosa injury and hemorrhage when the nose catheter is placed while solving the problem of upper respiratory tract obstruction caused by the glossoptosis; meanwhile, the method has the advantages of being convenient to operate and connect with external equipment.
In order to achieve the above object, the present invention provides the following technical solutions:
A nose catheter for preventing a user from falling back from tongue comprises a catheter unit, a joint unit, a supporting guide core and a nose plug;
the catheter unit comprises a non-bending hollow hose which can be used for nasopharynx ventilation, the front end of the hollow hose is provided with an opening for ventilation or liquid ventilation, and the rear end of the hollow hose is connected with a first joint with a through inner cavity;
the joint unit comprises a joint head end and a joint tail end, the joint head end and the joint tail end are communicated through a through inner cavity, and the joint head end is used for being connected with the first joint;
The support guide core comprises a second joint and a soft guide core, the second joint is matched with the joint tail end of the joint unit and can be fixed with the joint tail end, and the second joint is detachable from the joint tail end; the soft guide core is arranged along the length direction of the hollow hose, and can be inserted into the lumen of the hollow hose through the through inner cavity of the joint unit to serve as a supporting structure when the hollow hose is inserted into the tube;
The nose plug is sleeved on the hollow hose and can move relative to the hollow hose under the action of external force, and the nose plug can be limited after the movement is completed.
Further, the hollow hose employs a reinforced hose having a reinforced liner structure not provided to the tip of the hollow hose to maintain sufficient flexibility of the tip of the catheter unit when cannulated;
At this time, the hollow hose comprises an open hole section and a reinforced lining section, the open hole section is positioned at the front end of the hollow hose, and the hose wall of the open hole section is provided with the open hole; the reinforcing lining section is positioned at the rear end of the open hole section, and the pipe wall of the reinforcing lining section is provided with an elastic reinforcing lining structure.
Further, when the soft guide core completely enters the lumen of the hollow hose, the soft guide core does not reach the tip of the hollow hose to maintain the flexibility of the tip of the catheter unit when cannulating.
Further, the outer diameter of the hollow hose is 1-4mm, and the length of the hollow hose is 50-500mm; scale marks are arranged on the side wall of the hollow hose;
The reinforced lining structure is an elastic spiral lining structure, an elastic strip lining structure or an elastic net lining structure.
Further, when the soft guide core is used as a supporting structure for the hollow hose pipe, supporting force and anti-kink force are provided for the pipe body of the hollow hose; meanwhile, the soft guide core has flexibility so that the soft guide core can deform along with the bending part of the nasopharyngeal cavity channel; the hollow hose is bent along with the bending shape of the supporting guide core, and can form radian matched with a nasopharyngeal cavity channel after being inserted into the nasopharyngeal cavity.
Further, the joint unit adopts a small-caliber joint head end and a large-caliber joint tail end, the joint head end is detachably connected with the first joint, and the inner diameter size of the joint head end is matched with the outer diameter size of the proximal end of the first joint so that the proximal end of the first joint can enter the joint head end for fixing;
The joint tail end is also used for connecting external equipment, and comprises at least a first joint pipe and a second joint pipe which are nested, so as to connect the external equipment with different-size interfaces; the first joint pipe is arranged in the second joint pipe and is coaxially arranged, the inner cavity of the first joint pipe is communicated with the inner part of the small-caliber joint head end to form a through inner cavity of the joint unit, and the soft guide core of the support guide core is inserted into the hollow hose through the through inner cavity;
an operation handle is arranged at the joint of the joint head end and the joint tail end for a user to carry out handheld operation.
Further, when it is necessary to connect an external device,
Connecting small-interface external equipment with a first instrument general size through the first joint pipe; or connecting a large-interface external device with a second instrument universal size through the second joint pipe; or the air supply equipment with a flexible interface is connected through the annular pipe between the first joint pipe and the second joint pipe.
Further, the second connector comprises a first chamber and a second chamber, the first chamber is communicated with the second connector to form a through inner cavity, and the head end of the soft guide core is arranged in the first chamber and communicated with the first chamber, so that an interface of external equipment can be connected with the soft guide core.
Further, the top end of the soft guide core of the support guide core is provided with an end cap; and/or the number of the groups of groups,
The detachable connection mode of the second joint of the supporting guide core and the joint tail end of the joint unit is an extrusion connection mode, a friction connection mode, a rotary connection mode and/or a bayonet connection mode, and the outer surface of the second joint is provided with external threads so as to be convenient for a user to hold.
Further, the outer diameter of the nose plug is matched with the nostril, the nose plug comprises a nose plug main body, a through hole penetrating the nose plug main body and nose plug fins, and the nose plug fins and the nose plug main body are integrally formed;
The nose plug can be sleeved on the hollow hose through the through hole, the diameter of the through hole is matched with the outer diameter of the hollow hose, so that the nose plug can be limited after the nose plug is moved, and the limiting is extrusion limiting or friction limiting;
the nasal obstruction wing pieces are used for preventing nasal obstruction from falling into the nasal cavity.
Compared with the prior art, the invention has the following advantages and positive effects by taking the technical scheme as an example:
The invention provides a nose catheter capable of preventing a tongue from falling back, which comprises a catheter unit, a joint unit, a supporting guide core and a nose plug; on the one hand, the catheter unit, the joint unit and the supporting guide core are matched in structure and size, the supporting guide core with the soft guide core can be inserted into the pipe cavity of the hollow hose through the joint unit to be used as a supporting structure when the hollow hose is inserted into the pipe cavity, the second joint of the supporting guide core is matched with the joint tail end of the joint unit and can be fixed with the joint tail end, and the hollow hose inserted into the supporting guide core forms a bending shape matched with a nasopharyngeal cavity channel in the inserting process; on the other hand, the catheter unit is matched with the nasal plug for use, and the position of the catheter is fixed through the limit between the nasal plug and the hollow hose, so that the movement of the catheter in the nasal cavity is limited. The invention can obviously improve the implantation success rate of a nose catheter with small size, such as a nose catheter with the outer diameter of 1-4mm, and obviously reduce the nasal mucosa injury and bleeding occurrence rate when the nose catheter is implanted while solving the problem of upper respiratory tract obstruction caused by glossoptosis.
Meanwhile, the invention has the advantages of convenient operation and convenient connection with external equipment. The hollow hose can be detachably connected with the connector unit through the first connector, the bottom of the front end and/or the side wall of the front end of the hollow hose are/is provided with holes for ventilation or liquid ventilation, when the first connector is connected with the connector unit, external equipment such as a syringe, a breathing machine, an oxygen supply pipeline and the like are communicated through the connector tail end of the connector unit, and when the first connector is separated from the connector unit, the ventilation pipeline such as the oxygen supply pipeline is directly communicated through the first connector; the support guide core comprises a second connector, the second connector is matched with the connector tail end of the connector unit and can be fixedly connected with the connector tail end, and the support guide core can be detached according to the needs in operation so as to be connected with various types of external equipment.
Detailed Description
The anti-lingual-drop nasal catheter disclosed in the present invention will be described in further detail below with reference to the accompanying drawings and specific examples. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be regarded as being isolated, and they may be combined with each other to achieve a better technical effect. In the drawings of the embodiments described below, like reference numerals appearing in the various drawings represent like features or components and are applicable to the various embodiments. Thus, once an item is defined in one drawing, no further discussion thereof is required in subsequent drawings.
It should be noted that the structures, proportions, sizes, etc. shown in the drawings are merely used in conjunction with the disclosure of the present specification, and are not intended to limit the applicable scope of the present invention, but rather to limit the scope of the present invention. The scope of the preferred embodiments of the present invention includes additional implementations in which functions may be performed out of the order described or discussed, including in a substantially simultaneous manner or in an order that is reverse, depending on the function involved, as would be understood by those of skill in the art to which embodiments of the present invention pertain.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
Examples
Referring to fig. 1, a low oxygen catheter with a core for preventing tongue from falling back is provided in this embodiment.
The anti-lingual-drop hypoxia catheter 10 comprises a catheter unit 100, a joint unit 200 and a support guide core 300.
The catheter unit 100 comprises a hollow hose 110 that can be used for nasopharyngeal ventilation. The hollow hose 100 is a flexible hollow tube and may be made of flexible materials, such as flexible plastics, rubber, silica gel, resin, etc., and preferably a medical PVC tube.
In this embodiment, the hollow tube 110 has flexibility such that the hollow tube can be bent along with the bent shape of the supporting guide 300 and can form a curvature matching with the path of the nasopharyngeal cavity after being inserted into the nasopharyngeal cavity. The bending properties of the hollow hose are related to the flexibility of the hose, which, in the case of a selected hose material, is related to the flexibility of the hose (i.e. slenderness ratio), i.e. the flexibility can be adjusted by adjusting the length of the hollow hose and the diameter of the hose cross section.
Preferably, as a typical way, the outer diameter of the hollow hose may be 1-10mm, preferably less than 4mm; the wall thickness may be between 0.3 and 0.5mm, preferably 0.4mm, and the length of the hollow hose may be 50 to 500mm, preferably 50 to 150mm.
The front end of the hollow hose 110 is further provided with an opening 120 for ventilation or liquid ventilation, so that the hollow hose 110 can be ventilated, discharged, administered, etc. through the opening.
Referring to fig. 2, the opening 120 may be provided at the front bottom and/or the front side wall of the hollow hose 110. Preferably, at least one opening is provided in the bottom of the front end of the hollow hose, and a plurality of rows, such as, by way of example and not limitation, 4 rows of at least 2 openings are provided in each row, in the front end side wall of the hollow hose.
In this embodiment, the hollow hose is a non-bending hollow hose, and scale marks are provided on the side wall of the hollow hose, so that an operator can position the relative position of the catheter unit. Preferably, the graduation marks can be arranged in combination with the tissue structure characteristics of the nasopharyngeal cavity, so that an operator can quickly know the position information of the hose in the nasopharyngeal cavity through the graduation marks.
In this embodiment, the hollow hose 110 may be a common hose or a reinforced hose. When a reinforced hose is used, the wall of the hollow hose 110 may be provided with an elastic reinforced lining structure.
Preferably, the reinforcing liner structure is not provided to the top end of the hollow hose 110 to maintain sufficient flexibility of the catheter unit top end when cannulated. At this time, the hollow hose is divided into an open hole section and a reinforcing liner section, which are connected end to end. The perforated section is positioned at the front end of the hollow hose, and the hose wall of the perforated section is provided with the aforesaid perforations 120. The reinforced lining section is positioned at the rear end of the open hole section, and the pipe wall of the reinforced lining section is provided with an elastic reinforced lining structure.
The reinforced lining structure is preferably an elastic spiral lining structure, an elastic strip lining structure or an elastic net lining structure. Such as steel strands, plastic strands, etc., and such as steel mesh.
In this embodiment, an elastic helical liner structure is preferred. The elastic spiral lining structure can form an enhanced hose as an elastic supporting structure of the hollow hose, so that the hollow hose has good flexibility and certain strength, has good deformation resistance, ensures the smoothness of the hollow hose in the airway of a patient, avoids the airway obstruction phenomenon caused by the distortion or the collapse deformation of the airway of the patient, and improves the use safety of the anti-lingual-drop hypoxia catheter. In the concrete implementation, the elastic spiral lining structure can be coated and arranged in the pipe wall of the hollow hose. In particular, the elastic helical inner lining structure is preferably a helical steel wire, and as an example of a typical manner, the hollow hose is preferably made of polyvinyl chloride, the helical steel wire is preferably made of a stainless steel wire having a diameter of 0.1mm, and the stainless steel is preferably medical grade 316 stainless steel.
The rear end of the hollow hose 110 is also connected to a first connector 130 having a through lumen.
The connector unit 200 may include a connector head end and a connector tail end. The joint head end and the joint tail end are communicated through a through cavity. The connector head end is configured to be detachably connected to the first connector 130, and the connector tail end may be configured to be connected to an external device.
Specifically, referring to fig. 3, the connector unit 200 includes a small-caliber connector head end 210 and a large-caliber connector tail end 220, and the connector head end 210 and the connector tail end 220 are communicated through a through cavity. Optionally, an operation handle 230 is provided at the connection between the joint head end 210 and the joint tail end 220 for the user to perform a handheld operation. The inner diameter of the connector tip 210 is sized to match the outer diameter of the proximal end of the first connector 130 such that the proximal end of the first connector 130 can enter the connector tip 210 to achieve a secure connection.
The joint tail 220 may include a plurality of joint pipes in a nested arrangement, and when specifically arranged, at least includes a first joint pipe and a second joint pipe, where the first joint pipe is arranged inside the second joint pipe and the first joint pipe and the second joint pipe are coaxially arranged. Through the first connector tube, a small-interface external device having a first instrument universal size may be connected. The first instrument is generally sized, such as a size suitable for use with a syringe adapter, nasal oxygen cannula adapter. Through the second connector tube, a large-interface external device having a common size for the second instrument can be connected. Alternatively, an air supply device having a flexible interface, such as a flexible nasal oxygen cannula, may also be connected through an annular tube between the first and second connector tubes, as an example.
The support guide 300 includes a second joint 310 and a soft guide core 320 having a flexibility. The top end of the flexible guide core 320 may also be provided with a protective end cap as a protective structure.
The second connector 310 is adapted to be fixedly connected to the connector end 220 of the connector unit 200, see fig. 4 and 5. Specifically, the second connector 310 may be detachably and fixedly connected to the connector tail 220. The detachable connection mode can adopt an extrusion connection mode, a friction connection mode, a rotary connection mode and/or a bayonet connection mode. In this embodiment, the fastening between the second connector 310 and the connector tail 220 is preferably achieved by friction connection.
Referring to fig. 6, the second connector 310 may specifically include a first chamber 311 and a second chamber 312. The first cavity 311 is formed on the second connector 310 to penetrate through the second connector, and the head end of the soft guide core 320 is installed in the first cavity 311 and penetrates through the first cavity 311, so that an interface of external equipment can be connected with the soft guide core 320. The outer surface of the second connector 310 is also provided with external threads 313 for hand-held operation by a user.
The flexible guide core 320 is provided along the longitudinal direction of the hollow hose 110, and can be inserted into the lumen of the hollow hose 110 through the through-lumen of the joint unit 200 as a support structure for the hollow hose insertion. That is, the soft guide core 320 can provide a sufficient supporting force and anti-kink force for the tube body of the hollow hose, and can serve as a guide structure and a supporting structure of the cannula when the hollow hose is cannulated; at the same time, the flexible guide core 320 should also be flexible so that it can deform with the curvature of the nasopharyngeal cavity passage, facilitating passage through the nasal cavity while reducing trauma to the nasal cavity and pharyngeal sidewall.
Preferably, the length of the flexible guide core is less than the length of the hollow hose, and when the flexible guide core is fully inserted into the lumen of the hollow hose, the flexible guide core does not reach the tip of the hollow hose to maintain the flexibility of the tip of the catheter unit when cannulated. The complete access means that the soft guide core completes the operation of entering the hollow hose. In particular, when the flexible guide core completely enters the lumen of the hollow hose, the distance between the end of the flexible guide core and the tip of the hollow hose is not less than the length of the aforementioned perforated section, that is, the length of the flexible guide core inserted into the hollow hose is adapted to the length of the reinforcing liner section, so that sufficient flexibility of the tip of the catheter unit at the time of catheterization is maintained.
The flexible guide core 320 includes a plurality of movable joint modules 321 connected end to end in sequence, and an elongated rod-shaped flexible guide core is formed by assembling and connecting the plurality of movable joint modules 321, as shown in fig. 7.
As shown in fig. 8, the flexible guide core 320 may further include a camera module 322 installed at a front end of the first movable joint module 321, and an operation handle module 323 installed at a rear end of the last movable joint module.
The movable joint modules 321 are composed of rigid fixed rings 3211 and elastic members, the elastic members have flexibility, the adjacent movable joint modules 321 are connected by the rigid fixed rings 3211 and the elastic members, and the flexible connecting pieces are formed by the elastic members, so that the connecting angles between the movable joint modules are adjustable. During intubation, the connection angle between the movable joint modules can be adjusted so that the soft guide core forms a bending shape matched with the cavity.
The flexible connector means a structure capable of enabling a flexible connection of a target object, such as, by way of example and not limitation, a connection structure such as a spring, a bellows (a tubular member formed by connecting foldable bellows in a folding and telescoping direction), a hinge shaft, or other elastic structure having a desired flexibility and kink resistance.
In this embodiment, preferably, the elastic member is an electroactive polymer member, and in this case, the movable joint module further includes an electrically exciting portion disposed corresponding to the electroactive polymer member. The electroactive polymer member is a member made from an electroactive polymer (EAP, E l ectro Act ive Po lymer) material. Electroactive polymers can undergo various forms of mechanical response such as shrinkage or expansion by changing the internal structure of the material under the action of an applied electric field, i.e., can undergo deformation upon being subjected to an electrical stimulus. EAP may employ a fiber bundle structure (EAP fiber bundle) or a laminate structure (laminated by a plurality of EAP layers) as needed; and based on the movement to be achieved, various configurations, shapes or sizes are provided, which belong to the prior art and are not described herein.
The electroactive polymer member may be capable of contracting or expanding upon electrical activation of the electrical activation portion to produce an asymmetric deformation and form a bend by the asymmetric deformation to adjust the connection angle between the articulating modules. Preferably, to form the aforementioned asymmetric deformations, the electroactive polymer member may include at least two electroactive polymer rods fixedly mounted on and circumferentially spaced along the rigid fixation ring.
At this time, the electric excitation part may include a conductive line composed of a central control cable and a distribution cable, which is disposed in one-to-one correspondence with the electroactive polymer rod. The central control cable extends along the axial direction of the rigid fixing ring and is arranged with the same central shaft as the rigid fixing ring, and the central control cable can be connected with a power supply. The cable is radially arranged with the central control cable as a center, one end of the cable is connected with the central control cable, and the other end of the cable is connected with the electroactive polymer rod through the electrode. In this way, each electroactive polymer rod can be connected with the central control cable through an independent cable distribution, and independent control can be realized to avoid interference.
In particular, the number of electrodes provided for each electroactive polymer rod can be multiple, with multiple electrodes being attached to at least one side or at least a portion of the electroactive polymer rod by embedding, adhering, or otherwise affixing the electrodes. The electrodes used may be of any shape and material provided that they are capable of providing an appropriate voltage to the electroactive polymer.
When guiding adjustment is needed, the plurality of electroactive polymer rods are selectively electrically excited so as to cause the excited electroactive polymer rods to shrink or expand and drive the asymmetric deformation. Specifically, an electrical signal transmitted from a power source is selectively applied to an electrode to which the cable is connected through the aforementioned center control cable, and an electrical stimulus is applied to the corresponding electroactive polymer rod through the electrode to cause the electroactive polymer rod to shrink and deform, thereby causing the electroactive polymer member to bend in the direction or opposite the electroactive polymer rod. It is known that when the electroactive polymer rod is contracted, the electroactive polymer member is bent in the direction of the electroactive polymer rod, and when the electroactive polymer rod is expanded, the electroactive polymer member is bent in the opposite direction of the electroactive polymer rod.
At this time, the camera module 322 may include a camera and a central control cable, and when the camera module is mounted on the first movable joint module 321, the central control cable of the camera module may be electrically connected with the central control cable of the first movable joint module 321.
The operating handle module 323 may include a rigid securing ring, a handle portion, and an external conductive cable. The rigid stationary ring is attached to the electroactive polymer rod of the last articulation module 321. When the operating handle module 323 is mounted on the last movable joint module 321, the external conductive cable of the operating handle module 323 can be electrically connected with the central control cable of the last movable joint module 321.
The external conductive cable can then be inserted into the first cavity of the second connector 310 (the first cavity serves as a cable cavity), so that an external control system can be electrically connected through the external conductive cable in the second connector 310 when needed.
In order to realize rapid splicing of the modules, a rapid interface is arranged at the free end of the rigid fixed ring corresponding to each movable joint module so as to be rapidly and fixedly connected with the rod end of the electroactive polymer rod of the adjacent movable joint module. Preferably, the quick interface is an adhesion interface, a magnetic adsorption interface or a plug interface.
And corresponding to each module (comprising a movable joint module, a camera module and an operation handle module), magnetic adsorption interfaces are arranged at two ends of the central control cable so as to be connected with the central control cable of the adjacent movable joint module, and the adjacent central control cable after connection can carry out electric signal transmission. Namely, the quick connection of the central control cable unit is performed by arranging quick magnetic adsorption interfaces at two ends of the central control cable. In order to provide the input and output of the electric signals after connection, the magnetic adsorption interface is arranged as an electric contact joint which can realize electric connection after connection.
In this way, signals can be transmitted through the various segments of the articulation modules and the operating handle module and ultimately connected to an external control system.
Preferably, the image information of the cavity can be collected by a camera of the camera module and then sent to the external control system. After the external control system acquires the image information of the cavity, the external control system can analyze the image to acquire the three-dimensional data of the cavity to obtain the bending parameters of the cavity, and then controls the bending of each section of movable joint module according to the bending parameters to realize the self-adaptive guiding control of the soft guiding core.
Preferably, as shown in connection with fig. 9 to 13, the electroactive polymer member includes four isomorphic electroactive polymer rods 3212 uniformly arranged along the circumferential direction of the rigid fixing ring, and adjacent electroactive polymer rods 3212 are arranged at 90 degrees (corresponding to the adjustment in the front-back and left-right directions, respectively). One center cable 3213 is connected to the four electroactive polymer rods 3212 through four cable branches 3214, and different electrical excitation conditions can be applied to the four electroactive polymer rods 3212 through electrodes on the cable branches 3214 to obtain the final required bending direction. Meanwhile, the electroactive polymer rod may include a first arm and a second arm disposed at an included angle α, and the included angle α preferably ranges from 120 degrees to 160 degrees, and bending sensitivity may be improved by disposing the V-shaped rod.
Preferably, a switch is arranged at the connection position of each cable branch and the central control cable, a switch on-off controller is arranged corresponding to each switch, and after a switch on-off instruction is acquired through the switch on-off controller, the corresponding switch is controlled to be connected with a circuit or disconnected with a circuit so as to selectively apply electric excitation to one or more electroactive polymer rods in the electroactive polymer member.
Preferably, when the amount of deformation (amount of shrinkage or expansion) of the electroactive polymer is correlated with the voltage strength, the amount of shrinkage of the electroactive polymer rod to be bent can also be adjusted by adjusting the voltage strength of the electrical excitation.
Preferably, an insulating coating is plated on the outer surface of the electroactive polymer rod as a protective structure.
In this embodiment, the hollow hose may optionally further comprise a plurality of chambers. Specifically, referring to fig. 14, the hollow hose 110 may include a main chamber 110a and at least one sub-chamber 110b, the main chamber 110a and the sub-chamber 110b being separately provided, and a third connector 140 may be provided corresponding to the sub-chamber 110b to be connected to an external device.
The main lumen 110a is primarily used for nasopharyngeal ventilation. A camera and/or a carbon dioxide detection probe can be installed in the sub-cavity 110b, and the camera and/or the carbon dioxide detection probe is connected with a corresponding image detection device and/or carbon dioxide detection device through a third joint so as to perform image detection and/or carbon dioxide detection. Or the sub-chambers 110b may be used for independent liquid passage to achieve gas-liquid channel separation.
Referring to fig. 15, another embodiment of the present invention provides a catheter kit with a core for preventing a tongue from falling back and having hypoxia.
The guide-core type anti-glossoptosis low oxygen catheter kit comprises the guide-core type anti-glossoptosis low oxygen catheter 10 and a nasal plug 20.
The anti-lingual-drop hypoxia catheter 10 comprises a catheter unit 100, a joint unit 200 and a support guide core 300.
The nasal plug is sleeved on the hollow hose and can move relative to the hollow hose under the action of external force, the outer diameter size of the nasal plug is matched with the nostril size, and the inner diameter size of the nasal plug is matched with the outer diameter of the hollow hose so that the nasal plug can be limited after the movement is completed.
Referring to fig. 16, the nose plug 20 includes a nose plug body 21 and a through hole 22 penetrating the nose plug body 21, and the nose plug can be sleeved on the hollow hose 110 through the through hole 22 and can move relative to the hollow hose 110 under the action of external force. Preferably, the outer diameter of the nose plug 20 is sized to match the nostril size, and the inner diameter of the nose plug 20 (i.e., the diameter of the through-hole 22) is sized to match the outer diameter of the hollow hose 110 so that the nose plug 20 can be restrained after the movement is completed. The limiting mode comprises but is not limited to extrusion limiting or friction limiting.
The nose plug 20 can be made of rubber, silica gel, elastic plastic and other materials.
Preferably, the nasal prongs 20 further include prongs tabs 23 to block the prongs from falling into the nasal cavity of the patient. Preferably, the nose plug wing panel can be integrally formed with the nose plug main body part.
Other features of the anti-lingual-fall hypoxic catheter refer to the previous embodiments and are not described in detail herein.
The components may be selectively and operatively combined in any number within the scope of the present disclosure. In addition, terms like "comprising," "including," and "having" should be construed by default as inclusive or open-ended, rather than exclusive or closed-ended, unless expressly defined to the contrary. All technical, scientific, or other terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Common terms found in dictionaries should not be too idealized or too unrealistically interpreted in the context of the relevant technical document unless the present disclosure explicitly defines them as such. Any alterations and modifications of the present invention, which are made by those of ordinary skill in the art based on the above disclosure, are intended to be within the scope of the appended claims.