CN113425922A - Portable negative pressure suction device - Google Patents

Abstract

Translated fromChinese

本发明公开了一种便携式负压吸引装置，包括：负压桶；引流袋，安装在负压桶内，通过引流袋将患者伤口处的积液引流；连接管，安装在负压桶内，其一端插入引流袋内，其另一端延伸至患者的伤口外VSD薄膜上，使得患者伤口处的积液可随着连接管进入引流袋内；连接件，安装在负压桶外侧，通过所述连接件将患者的腰部与负压桶连接，使得负压桶随着患者的移动而同步移动；抽气机构，安装在负压桶的外侧，本发明可以方便非下肢患者在合理的位置进行合理的运动，引流设备可随着患者的移动而移动，进而避免能正常行走的的病人也需要被迫长期卧床，导致了压疮、便秘、下肢深静脉血栓、坠积性肺炎等并发症的发生的可能性，进而方便患者的使用。

The invention discloses a portable negative pressure suction device, comprising: a negative pressure bucket; a drainage bag, which is installed in the negative pressure bucket, and drains the fluid accumulation at a patient's wound through the drainage bag; a connecting pipe is installed in the negative pressure bucket, One end is inserted into the drainage bag, and the other end extends to the VSD film outside the patient's wound, so that the fluid at the patient's wound can enter the drainage bag along with the connecting tube; The connecting piece connects the waist of the patient with the negative pressure barrel, so that the negative pressure barrel moves synchronously with the movement of the patient; the air pumping mechanism is installed on the outside of the negative pressure barrel, and the present invention can facilitate non-lower extremity patients to carry out reasonable operation in a reasonable position. The drainage device can move with the movement of the patient, thereby avoiding the need for patients who can walk normally to be forced to stay in bed for a long time, resulting in complications such as pressure ulcers, constipation, lower extremity deep vein thrombosis, and hypostatic pneumonia. possibility, which in turn facilitates the use of the patient.

Description

Portable negative pressure suction device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a portable negative pressure suction device.

Background

The negative pressure closed drainage adopts a polyurethane film (a biological semipermeable membrane) and polyvinyl alcohol hydrated seaweed salt foam (VSD dressing), and through continuous negative pressure drainage of the wound, various exudates are timely discharged through micropores and a drainage tube in the VSD dressing, so that the wound healing is effectively promoted, the pain of repeated dressing change of the wound of a patient caused by long-term unhealed wound is relieved, and the negative pressure closed drainage is widely applied to orthopedics and has obvious curative effect. The VSD has wide use indications and can be applied to 1 severe soft tissue contusion and laceration and soft tissue defect; 2. large hematomas or effusions; 3. periosteum syndrome; 4. open fracture may or may be complicated by infection; 5. patients with joint cavity infection needing incision drainage; 6. acute and chronic osteomyelitis requiring fenestration and drainage; 7. body surface abscesses and pyogenic infections; 8. post-operative incision infection; 9. a skin grafting area after skin grafting; 10. ulcer and bedsore.

The current clinical common mode is to connect the drainage tube with the negative pressure pipeline on the hospital wall and adjust the negative pressure through the pressure gauge. However, this method has a disadvantage that since the position of the negative pressure conduit in the hospital is fixed, in order to maintain effective negative pressure, patients who can normally walk without lower limb surgery need to be forced to lie in bed for a long time, resulting in the occurrence of complications such as pressure sores, constipation, lower limb deep vein thrombosis, and weighing pneumonia. To this end, we propose a portable negative pressure suction device.

Disclosure of Invention

The present invention is directed to a portable vacuum suction device to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: a portable negative pressure suction device comprising:

a negative pressure barrel;

the drainage bag is arranged in the negative pressure barrel and is used for draining the effusion at the wound of the patient;

the connecting pipe is arranged in the negative pressure barrel, one end of the connecting pipe is inserted into the drainage bag, and the other end of the connecting pipe extends to the VSD film outside the wound of the patient, so that effusion at the wound of the patient can enter the drainage bag along with the connecting pipe;

the connecting piece is arranged at the outer side of the negative pressure barrel and is used for connecting the waist of the patient with the negative pressure barrel so that the negative pressure barrel moves synchronously along with the movement of the patient;

the air exhaust mechanism is arranged on the outer side of the negative pressure barrel, one end of the air exhaust mechanism extends into the drainage bag, and air is exhausted through the air exhaust mechanism, so that accumulated liquid in the connecting pipe is exhausted by the drainage bag.

Preferably, the negative pressure barrel comprises a barrel body for placing the drainage bag, a barrel cover is arranged at the top of the barrel body, the connecting pipe and the air pumping mechanism penetrate through the barrel cover, the drainage bag is sealed relative to the barrel body through the barrel cover, and then the air pumping mechanism can pump out air in the drainage bag.

Preferably, the drainage bag comprises a connecting part connected with the barrel cover, a propping part capable of being clamped is arranged at the bottom of the connecting part, and a bearing part capable of freely rotating is arranged at the bottom of the propping part.

Preferably, the air exhaust mechanism comprises an instrument panel installed at the top of the negative pressure barrel, an air pump capable of exhausting air from the drainage bag is arranged in the instrument panel, the air pump can exhaust air from the drainage bag by pressing a plurality of buttons on the instrument panel, and accordingly the connecting pipe can extract effusion from the wound of the patient.

Preferably, the connecting piece is including installing two waistbands in the negative pressure bucket outside, connect through two sets of magic subsides between two above-mentioned waistbands.

Preferably, a track is arranged inside the barrel body, a supporting plate capable of supporting the bearing part is arranged on the outer side of the bearing part, two sides of the supporting plate are inserted into the track through a sliding rod, and when the bearing part is under the action of gravity, the supporting plate rotates and slides in the track through the sliding rod, so that the bearing part is in a vertically downward state.

Preferably, the bottom of the barrel cover is rotatably connected with a rotating ring, the rotating ring is connected with the drainage bag, the rotating ring is connected with the air pumping mechanism through a connecting rod, the connecting ring is connected with the support plate through a 'transmission rod, the support plate rotates, the connecting ring and the' transmission rod synchronously rotate, and then the connecting rod pushes the air pumping mechanism to rotate.

Preferably, the rotatable control ring that is connected with in the outside of staving, the locking groove that a plurality of is central symmetric distribution is seted up in the outside of staving, every all be equipped with the locking plate in the locking groove, the inboard of control ring be equipped with can with the locking plate cooperation will strut the splint of portion locking, be equipped with the spring between splint and the locking plate, through the straining of spring makes splint and locking plate will strut the portion and press from both sides tightly, and then make the drainage bag be in the state of strutting.

The invention has at least the following beneficial effects:

the drainage device is fixed on the waist of a patient through the negative pressure barrel and the connecting piece, the drainage device can move along with the movement of the patient, and the patient can guide effusion at a wound into the drainage device at any time.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a view of another embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of the barrel of the present invention;

FIG. 4 is a partial cross-sectional view of the drainage bag of the present invention;

fig. 5 is a view of another perspective structure of fig. 4.

In the figure: 1-a negative pressure barrel; 11-barrel body; 12-a barrel cover; 2-a drainage bag; 21-a connecting part; 22-a spreader portion; 23-a carrier; 3-connecting pipe; 4-a connector; 41-waistband; 42-magic tape; 5-an air exhaust mechanism; 51-instrument panel; 52-a button; 53-a pipe; 6-orbit; 7-a support plate; 8-a slide bar; 9-a rotating ring; 10-a connecting rod; 13-a control loop; 14-locking grooves; 15-locking plate; 16-a spring; 17-a transmission rod; 18-a splint (18).

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a portable negative pressure suction device comprising:

the negative pressure barrel 1 is cylindrical and can be used for bearing thedrainage bag 2 and connecting the drainage bag to the outer side of the body of a patient;

thedrainage bag 2 is arranged in the negative pressure barrel 1, the effusion at the wound of the patient is drained through thedrainage bag 2, and thedrainage bag 2 is opened, so that the effusion of the patient can be conveniently stored;

the connectingpipe 3 is arranged in the negative pressure barrel 1, one end of the connecting pipe is inserted into thedrainage bag 2, and the other end of the connecting pipe extends to the VSD film outside the wound of the patient, so that the effusion at the wound of the patient can enter thedrainage bag 2 along with the connectingpipe 3;

the connecting piece 4 is arranged at the outer side of the negative pressure barrel 1, and the waist of the patient is connected with the negative pressure barrel 1 through the connecting piece 4, so that the negative pressure barrel 1 moves synchronously along with the movement of the patient, and the use of the negative pressure barrel 1 and the patient is facilitated;

air exhaust mechanism 5, install in the outside of negative pressure bucket 1, its one end extends to the inside ofdrainage bag 2, bleed throughair exhaust mechanism 5, makedrainage bag 2 take the hydrops in connectingpipe 3 out, be convenient for clear away the hydrops at patient wound position, this scheme can airexhaust mechanism 5 and patient's action be in the same place, but make things convenient for the patient can be free activity after non-low limbs operation, avoid pressing sore, constipation, the dark venous thrombosis of low limbs, the emergence of complications such as dropsy pneumonia, make things convenient for patient's use.

Negative pressure bucket 1 is including thestaving 11 that is used for placingdrainage bag 2, the top of staving 11 is equipped withbung 2, can dismantle betweenbung 2 and thestaving 11 and be connected, specific accessible threaded connection, connectingpipe 3 all runs throughbung 2 withair exhaust mechanism 5, throughbung 2 makesdrainage bag 2 is sealed for staving 11, and then makesair exhaust mechanism 5 can take out the air indrainage bag 2, and then can make things convenient for the patient to changedrainage bag 2 after using, convenient continuous use.

Drainage bag 2 includes the connectingportion 21 of being connected withbung 2, and connectingportion 21 is connected in the bottom ofbung 2, the bottom of connectingportion 21 is equipped with can be propped theportion 22 that struts by the centre gripping, and theportion 22 that struts can strutdrainage bag 2, whenair exhaust mechanism 5 bleeds, forms the negative pressure indrainage bag 2 easily, and then conveniently extracts the hydrops to patient's wound, the bottom of theportion 22 that struts is equipped with freely pivoted bearingpart 23, and connectingpipe 3 inserts inbearing part 23, still contains disinfectant in thebearing part 23, and the hydrops of connectingpipe 3 extraction can be discharged into in the disinfectant, avoids the adverse current of hydrops in the connectingpipe 3 on the one hand, and on the other hand avoids bacterial virus etc. indrainage bag 2 to get into patient's wound position, makes things convenient for patient's use.

Air exhaust mechanism 5 is including installing thepanel board 51 at 1 top of negative pressure bucket, be equipped with the air pump that can bleed indrainage bag 2 in thepanel board 51, the air pump passes throughpipeline 53 anddrainage bag 2 intercommunication, through pressing a plurality ofbutton 52 on thepanel board 51, can make the air pump bleed in todrainage bag 2, and then makes connectingpipe 3 to the extraction hydrops of patient's wound, andpanel board 51 can set up the pressure value, and thepanel board 51 the left side is the display screen, and the pressure value of setting can embody directly perceived. The first row on the right is a pressure plus, -key for adjusting the appropriate pressure value. The upper surface of the second row on the right is provided with a start key, the lower surface of the second row on the right is provided with a locking key, the pressure value can be adjusted only by pressing the locking key when the negative pressure needs to be adjusted again, and the locking key is required to be pressed after the pressure value is adjusted, so that the situation that the pressure value is too high or too low due to the fact that a patient touches the key surface carelessly is avoided.

The connecting piece 4 comprises twowaistbands 41 arranged on the outer side of the negative pressure barrel 1, thewaistbands 41 are fixedly connected with thebarrel body 11, the twowaistbands 41 are connected through two groups ofmagic tapes 42, themagic tapes 42 are detachably connected with thewaistbands 41 and can be adjusted according to the waistline of a patient, and thewaistbands 41 are dirty and can be detached for sterilization.

The utility model discloses a drainage bag, including staving 11, rail 6, slide bar 8, backup pad 7, slide bar 8 and backup pad 7, the inside track 6 that is equipped with of staving 11, the outside of bearingportion 23 is equipped with the backup pad 7 that can support bearingportion 23, the both sides of backup pad 7 are inserted in the track 6 through slide bar 8, slide bar 8 and backup pad 7 fixed connection, slide bar 8 and track 6 sliding connection just can be on track 6 rotation, when bearingportion 23 receives the weight effect, backup pad 7 passes through slide bar 8 and rotates and slides in track 6, and then makes bearingportion 23 be in perpendicular downward state, when the patient crouches on one's side, the sterile water indrainage bag 2 along with bearingportion 23 and the effect of backup pad 7 along gravity in staving 11, and then can make things convenient for the patient to lie on one's side or be in the use under different motion states.

The bottom of thebarrel cover 2 is rotatably connected with a rotating ring 9, the rotating ring 9 is rotatably connected with thebarrel cover 2, the rotating ring 9 is connected with thedrainage bag 2, the bag opening of thedrainage bag 2 is fixedly connected with the rotating ring 9, the rotating ring 9 is connected with theair pumping mechanism 5 through aconnecting rod 10, one end of theconnecting rod 10 is fixedly connected with the rotating ring 9, apipeline 53 of theair pumping mechanism 5 is fixedly connected with the connectingrod 10, apipeline 53 of theair pumping mechanism 5 is rotatably connected with thebarrel cover 2, the connecting ring is connected with the support plate 7 through a 'transmission rod 17, one end of the'transmission rod 17 is fixedly connected with the support plate 7, the 'transmission rod 17 is fixedly connected with the connecting ring, the connecting ring and the'transmission rod 17 synchronously rotate through the rotation of the support plate 7, the connectingrod 10 further pushes theair pumping mechanism 5 to rotate, and when a patient moves the body to be in, at this time, the support plate 7 synchronously pushes thetransmission rod 17 to rotate, the'transmission rod 17 synchronously pushes theconduit 53 to rotate through the rotating ring 9 and the connectingrod 10, and then theinstrument panel 51 synchronously rotates, and no matter the patient is in any posture, theinstrument panel 51 is always in the direct front of the sight of the patient, so that the patient can conveniently adjust thebutton 52 on theinstrument panel 51 at any time, and further the self-operation of the patient is facilitated.

The outer side of thebarrel body 11 is rotatably connected with acontrol ring 13, the outer side of thebarrel body 11 is provided with a plurality of locking grooves 14 which are distributed in a central symmetry manner, each locking groove 14 is internally provided with alocking plate 15, thelocking plates 15 are fixedly connected with thebarrel body 11, the inner side of thecontrol ring 13 is provided with aclamping plate 18 which can be matched with thelocking plates 15 to lock theopening part 22, theclamping plate 18 is in sliding connection with the locking grooves 14, aspring 16 is arranged between theclamping plate 18 and thelocking plates 15, two ends of thespring 16 are respectively fixedly connected with theclamping plate 18 and thelocking plates 15, thecontrol ring 13 is fixedly connected with theclamping plate 18, theclamping plate 18 and thelocking plates 15 clamp theopening part 22 tightly through tensioning of thespring 16, so that thedrainage bag 2 is in an opening state, when a patient uses the device, theclamping plate 18 and thelocking plates 15 clamp the outer side of thedrainage bag 2, thedrainage bag 2 is opened, and drainage of effusion by thedrainage bag 2 is convenient, afterdrainage bag 2 uses a period, patientrotation control ring 13, andsplint 18 keeps away fromlocking plate 15, andspring 16 is stretched, and splint 18 andlocking plate 15loosen drainage bag 2 this moment, take outdrainage bag 2 after, changedrainage bag 2 and finish the back, loosencontrol ring 13, andspring 16 kick-backs, and splint 18 andlocking plate 15 continue to press from bothsides drainage bag 2 tightly, make things convenient fordrainage bag 2's use.

The portable negative pressure barrel 1 is about 500ml in capacity, can prevent backflow after abarrel cover 12 is covered, and the negativepressure drainage bag 2 is about 500ml in capacity, can be replaced at any time, prevents bacterial breeding, and meets the infection requirements of hospitals.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

Translated fromChinese

1.一种便携式负压吸引装置，包括：1. A portable negative pressure suction device, comprising:负压桶（1）；Negative pressure barrel (1);引流袋（2），安装在负压桶（1）内，通过引流袋（2）将患者伤口处的积液引流；The drainage bag (2) is installed in the negative pressure bucket (1), and the fluid accumulation at the wound of the patient is drained through the drainage bag (2);连接管（3），安装在负压桶（1）内，其一端插入引流袋（2）内，其另一端延伸至患者的伤口外VSD薄膜上，使得患者伤口处的积液可随着连接管（3）进入引流袋（2）内；The connecting tube (3) is installed in the negative pressure barrel (1), one end of which is inserted into the drainage bag (2), and the other end extends to the VSD film outside the patient's wound, so that the fluid accumulation at the patient's wound can be connected with the The tube (3) enters the drainage bag (2);特征在于：It is characterized by:连接件（4），安装在负压桶（1）外侧，通过所述连接件（4）将患者的腰部与负压桶（1）连接，使得负压桶（1）随着患者的移动而同步移动；The connecting piece (4) is installed on the outside of the negative pressure bucket (1), and the patient's waist is connected to the negative pressure bucket (1) through the connecting piece (4), so that the negative pressure bucket (1) is moved with the movement of the patient. move synchronously;抽气机构（5），安装在负压桶（1）的外侧，其一端延伸至引流袋（2）的内部，通过抽气机构（5）抽气，使得引流袋（2）将连接管（3）内的积液抽出。The air extraction mechanism (5) is installed on the outer side of the negative pressure barrel (1), one end of which extends to the inside of the drainage bag (2), and the air is sucked through the air extraction mechanism (5), so that the drainage bag (2) connects the connecting tube ( 3) The effusion inside is drawn out.2.根据权利要求1所述的一种便携式负压吸引装置，其特征在于：所述负压桶（1）包括用于放置引流袋（2）的桶体（11），所述桶体（11）的顶部设有桶盖（2），所述连接管（3）与抽气机构（5）均贯穿桶盖（2），通过所述桶盖（2）使得所述引流袋（2）相对桶体（11）密封，进而使得抽气机构（5）可将引流袋（2）内的空气抽出。2 . The portable negative pressure suction device according to claim 1 , wherein the negative pressure barrel ( 1 ) comprises a barrel body ( 11 ) for placing a drainage bag ( 2 ), and the barrel body ( 11) The top of the barrel is provided with a barrel cover (2), the connecting pipe (3) and the air extraction mechanism (5) both pass through the barrel cover (2), and the drainage bag (2) is made through the barrel cover (2). It is sealed against the barrel body (11), so that the air extraction mechanism (5) can extract the air in the drainage bag (2).3.根据权利要求2所述的一种便携式负压吸引装置，其特征在于：所述引流袋（2）包括与桶盖（2）连接的连接部（21），所述连接部（21）的底部设有可被夹持的撑开部（22），所述撑开部（22）的底部设有可自由转动的承载部（23）。3 . The portable negative pressure suction device according to claim 2 , wherein the drainage bag ( 2 ) comprises a connecting part ( 21 ) connected with the barrel cover ( 2 ), and the connecting part ( 21 ) The bottom of the device is provided with a spreading portion (22) that can be clamped, and the bottom of the spreading portion (22) is provided with a freely rotatable bearing portion (23).4.根据权利要求1所述的一种便携式负压吸引装置，其特征在于：所述抽气机构（5）包括安装在负压桶（1）顶部的仪表盘（51），所述仪表盘（51）内设有可对引流袋（2）内抽气的气泵，通过按压仪表盘（51）上的若干个按钮（52），可使得气泵对引流袋（2）内抽气，进而使得连接管（3）对患者伤口处抽取积液。4. A portable negative pressure suction device according to claim 1, characterized in that: the air extraction mechanism (5) comprises an instrument panel (51) installed on the top of the negative pressure barrel (1), the instrument panel (51) is provided with an air pump that can pump air into the drainage bag (2), and by pressing several buttons (52) on the instrument panel (51), the air pump can be made to pump air into the drainage bag (2), thereby making the Connect the tube (3) to extract fluid from the patient's wound.5.根据权利要求1所述的一种便携式负压吸引装置，其特征在于：所述连接件（4）包括安装在负压桶（1）外侧的两个腰带（41），两个所上述腰带（41）之间通过两组魔术贴（42）连接。5 . The portable negative pressure suction device according to claim 1 , wherein the connecting piece ( 4 ) comprises two waist belts ( 41 ) installed on the outside of the negative pressure barrel ( 1 ). The belts (41) are connected by two sets of Velcro (42).6.根据权利要求3所述的一种便携式负压吸引装置，其特征在于：所述桶体（11）内部设有轨道（6），所述承载部（23）的外侧设有可支撑承载部（23）的支撑板（7），所述支撑板（7）的两侧通过滑杆（8）插入轨道（6）内，当承载部（23）受到重力作用时，所述支撑板（7）通过滑杆（8）在轨道（6）内转动并滑动，进而使得承载部（23）处于垂直向下状态。6. A portable negative pressure suction device according to claim 3, characterized in that: the barrel (11) is provided with a rail (6) inside, and the outer side of the bearing portion (23) is provided with a supportable bearing The support plate (7) of the part (23), the two sides of the support plate (7) are inserted into the track (6) through the sliding rod (8), when the bearing part (23) is subjected to gravity, the support plate ( 7) The sliding rod (8) rotates and slides in the track (6), so that the bearing part (23) is in a vertically downward state.7.根据权利要求6 所述的一种便携式负压吸引装置，其特征在于：所述桶盖（2）底部可转动的连接有转动环（9），所述转动环（9）与引流袋（2）连接，所述转动环（9）与抽气机构（5）之间通过连接杆（10）连接，所述连接环与支撑板（7）之间通过`传动杆（17）连接，通过所述支撑板（7）转动，使得连接环与`传动杆（17）同步转动，进而使得连接杆（10）推动抽气机构（5）转动。7 . The portable negative pressure suction device according to claim 6 , wherein a rotating ring ( 9 ) is rotatably connected to the bottom of the barrel cover ( 2 ), and the rotating ring ( 9 ) is connected to the drainage bag. 8 . (2) Connection, the rotating ring (9) and the air extraction mechanism (5) are connected by a connecting rod (10), and the connecting ring and the support plate (7) are connected by a transmission rod (17), Through the rotation of the support plate (7), the connecting ring and the transmission rod (17) are rotated synchronously, so that the connecting rod (10) pushes the air extraction mechanism (5) to rotate.8.根据权利要求3所述的一种便携式负压吸引装置，其特征在于：所述桶体（11）的外侧可转动的连接有控制环（13），所述桶体（11）的外侧开设有若干个呈中心对称分布的锁紧槽（14），每个所述锁紧槽（14）内均设有锁紧板（15），所述控制环（13）的内侧设有可与锁紧板（15）配合将撑开部（22）锁紧的夹板（18），所述夹板（18）与锁紧板（15）之间设有弹簧（16），通过所述弹簧（16）的拉紧，使得所述夹板（18）与锁紧板（15）将撑开部（22）夹紧，进而使得引流袋（2）处于撑开状态。8 . The portable negative pressure suction device according to claim 3 , wherein a control ring ( 13 ) is rotatably connected to the outer side of the barrel body ( 11 ), and the outer side of the barrel body ( 11 ) is rotatably connected. 9 . There are several locking grooves (14) symmetrically distributed in the center, each locking groove (14) is provided with a locking plate (15), and the inner side of the control ring (13) is provided with a The locking plate (15) is matched with the clamping plate (18) for locking the opening portion (22), a spring (16) is arranged between the clamping plate (18) and the locking plate (15), and the spring (16) ), so that the splint (18) and the locking plate (15) clamp the opening portion (22), thereby making the drainage bag (2) in a state of opening.

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