Connection Structure of a Medical Negative Pressure Suction Device and the Suction Device

Abstract

Connection structure and aspirator of a medical negative pressure aspirator according to the present invention. The structure includes: a first mounting plate provided on the negative pressure machine, and at least two first through grooves are provided on the first mounting plate; a second mounting plate provided on the drainage container, and at least two buckle portions are provided on the side surface of the second mounting plate, and the positions of the buckle portions correspond to the positions of the first through grooves; a driving component movably provided on the first mounting plate, and the driving component includes: at least two first driving portions located on the corresponding first through grooves; during operation, the buckle portions are inserted into the first through grooves, the first driving portions are in contact with the buckle portions and clamp the buckle portions; during disassembly, the driving component drives the first driving portions to move, so that the first driving portions are separated from the buckle portions to disassemble the drainage container.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a connection structure of a medical negative pressure aspirator and an aspirator. Background Art

[0002] The negative pressure suction device is composed of a voltage regulator, a drainage container, a hose, etc. There are two hose interfaces on the drainage container, one connected to the negative pressure terminal and the other connected to the working cavity. When the negative pressure terminal is connected, negative air pressure will be generated in the drainage container, and this negative pressure will guide dirt (such as dirty blood, sputum, etc.) to flow into the drainage container from the other hose. When the liquid level in the drainage container reaches a certain height, the stop valve on the drainage container cover will start to work, cutting off the liquid inflow pipeline, thereby preventing the liquid in the drainage container from overflowing due to overfilling. Considering different drainage volumes, multiple drainage containers can be cascaded to achieve the extraction and storage of a large amount of liquid.

[0003] The existing negative pressure aspirator connects the drainage container and the negative pressure machine by embedding the protruding part on the side of the drainage container into the groove on the side of the negative pressure machine. However, since the patient needs to get up and walk, the patient will carry the negative pressure aspirator around, resulting in the loosening of the connection between the drainage container and the negative pressure machine, leading to air leakage problems. Summary of the Invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a connection structure of a medical negative pressure aspirator and an aspirator, which is used to solve the technical problem that the existing negative pressure aspirator connects the drainage container and the negative pressure machine by embedding the protruding part on the side of the drainage container into the groove on the side of the negative pressure machine. However, since the patient needs to get up and walk, the patient will carry the negative pressure aspirator around, resulting in the loosening of the connection between the drainage container and the negative pressure machine, leading to air leakage.

[0005] In order to solve the above technical problems, the embodiments of the present invention adopt the following technical solutions:

[0006] The embodiment of the present invention provides a connection structure of a medical negative pressure aspirator for an aspirator, the aspirator including a negative pressure machine and a drainage container, and the structure includes:

[0007] A first mounting plate, the first mounting plate is provided on the negative pressure machine, and the first mounting plate has at least two first through grooves;

[0008] A second mounting plate, the second mounting plate is provided on the drainage container, and at least two buckle parts are provided on the side surface of the second mounting plate, and the positions of the buckle parts correspond to the positions of the first through grooves;

[0009] A driving component, the driving component is movably provided on the first mounting plate, and the driving component includes:

[0010] At least two first driving parts, which are located on the corresponding first through grooves;

[0011] During operation, the buckle part is inserted into the first through groove, and the first driving part contacts the buckle part and clamps the buckle part;

[0012] During disassembly, the driving component drives the first driving part to move, so that the first driving part disengages from the buckle part to disassemble the drainage container.

[0013] Furthermore, the structure further includes:

[0014] A pressing part, which is arranged on the driving component and is used to drive the driving component to move by pressing.

[0015] Furthermore, the first mounting plate includes:

[0016] A mounting part, which is arranged on the first mounting plate,

[0017] The driving component is arranged on the mounting part.

[0018] Furthermore, the structure further includes:

[0019] A first spring, one end of which is connected to the driving component, and the second end of the first spring is connected to the mounting part, and is used to provide a force towards the mounting part for the driving component when the driving component moves away from the mounting part.

[0020] Furthermore, the first mounting plate further includes:

[0021] A limiting part, which is arranged on the first mounting plate, and a preset space is formed between the limiting part and the first mounting plate, and the driving component passes through and is arranged in the preset space to limit the driving component in the direction away from the mounting part.

[0022] Furthermore, the buckle part has a groove;

[0023] The first driving part has an inclined surface, and the inclined surface is located on the surface of the first driving part close to the first mounting plate;

[0024] During operation, the buckle part is inserted into the first through groove and crosses the inclined surface, so that the first driving part is inserted into the groove for clamping.

[0025] Furthermore, the structure further includes:

[0026] A driving rod rotatably arranged in the negative pressure machine, and a pressing member arranged at the first end of the driving rod;

[0027] When disassembling, the pressing member acts on the driving rod, and the second end of the driving rod can drive the driving component to move upward, so that the first driving portion disengages from the buckle portion to disassemble the drainage container.

[0028] Further, the driving component has a connecting groove, the second end of the driving rod is inserted into the connecting groove, and the upper surface of the second end of the driving rod is in contact with the groove wall of the connecting groove;

[0029] The bottom of the second end of the driving rod has a second driving portion corresponding to one of the buckle portions; during operation, the second driving portion is stuck on its corresponding buckle portion;

[0030] When disassembling, the pressing member acts on the driving rod, the second end of the driving rod can drive the driving component to move upward, and the second driving portion disengages from its corresponding buckle portion to disassemble the drainage container.

[0031] Further, the structure further includes:

[0032] A second spring, the first end of the second spring is arranged in the negative pressure machine, and the second end of the second spring is arranged on the lower surface of the first end of the driving rod.

[0033] An embodiment of the present invention further provides a suction device, which includes:

[0034] A negative pressure machine having a first ventilation hole;

[0035] A drainage container having a containing space, a second ventilation hole and a third ventilation hole, and the first ventilation hole is communicated with the second ventilation hole;

[0036] The negative pressure machine and the drainage container are connected together through the connection structure of the medical negative pressure suction device as described above;

[0037] Hydrogel placed in the containing space;

[0038] A drainage tube arranged on the third ventilation hole.

[0039] Compared with the prior art, the beneficial effects of the embodiment of the present invention are as follows:

[0040] A connection structure and a suction device of a medical negative pressure suction device provided by an embodiment of the present invention are used for a suction device. The suction device includes a negative pressure machine and a drainage container. The structure includes: a first mounting plate provided on the negative pressure machine, and at least two first through grooves are provided on the first mounting plate; a second mounting plate provided on the drainage container, and at least two buckle parts are provided on the side surface of the second mounting plate, and the positions of the buckle parts correspond to the positions of the first through grooves; a driving component movably provided on the first mounting plate, and the driving component includes: at least two first driving parts located on the corresponding first through grooves; during operation, the buckle parts are inserted into the first through grooves, and the first driving parts are in contact with the buckle parts and clamp the buckle parts; during disassembly, the driving component drives the first driving parts to move, so that the first driving parts are separated from the buckle parts to disassemble the drainage container.

[0041] In the connection structure of the medical negative pressure suction device of this embodiment, multiple buckle parts are clamped with multiple first driving parts, effectively reducing the occurrence of air leakage problems, and being easy to disassemble. By driving the driving component to move, the first driving parts are separated from the buckle parts, thereby realizing the disassembly of the drainage container, facilitating the cleaning or replacement of the drainage container, and effectively solving the technical problem that the existing negative pressure suction device connects the drainage container and the negative pressure machine by embedding the protruding part on the side of the drainage container into the groove on the side of the negative pressure machine. However, since the patient needs to get up and walk, the patient will carry the negative pressure suction device and walk around, resulting in the loosening of the connection between the drainage container and the negative pressure machine and causing air leakage. Description of the Drawings

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0043] Figure 1 It is a schematic structural diagram of a medical negative pressure suction device provided by an embodiment of the present invention;

[0044] Figure 2 It is a schematic structural diagram of a second mounting plate in the connection structure of a medical negative pressure suction device provided by an embodiment of the present invention;

[0045] Figure 3 It is a schematic structural diagram of a driving component in the connection structure of a medical negative pressure suction device provided by an embodiment of the present invention;

[0046] Figure 4 is a first partial structural schematic diagram of a connection structure of a medical negative pressure aspirator provided by an embodiment of the present invention;

[0047] Figure 5 is a second partial structural schematic diagram of a connection structure of a medical negative pressure aspirator provided by an embodiment of the present invention;

[0048] Figure 6 is a third partial structural schematic diagram of a connection structure of a medical negative pressure aspirator provided by an embodiment of the present invention;

[0049] Figure 7 is an exploded view of a connection structure of a medical negative pressure aspirator provided by an embodiment of the present invention.

[0050] Wherein:

[0051] 100, negative pressure machine; 101, first through groove; 200, drainage container; 300, first mounting plate; 301, limiting part; 302, mounting part; 400, second mounting plate; 401, buckling part; 500, driving component; 501, first driving part; 600, pressing member; 700, driving rod; 800, second spring; 900, first spring 900. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0053] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0054] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a replaceable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0055] The following will further describe in detail the specific implementation manners of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0056] As Figure 1 shown, Figure 1 is a schematic structural diagram of a connection structure of a medical negative pressure aspirator and an aspirator provided by an embodiment of the present invention;

[0057] As Figure 1 and Figure 2 shown, a connection structure of a medical negative pressure aspirator and an aspirator,

[0058] for an aspirator, the aspirator includes a negative pressure machine 100 and a drainage container 200, and the structure includes:

[0059] A first mounting plate 300, the first mounting plate 300 is disposed on the negative pressure machine 100, and at least two first through grooves 101 are provided on the first mounting plate 300;

[0060] A second mounting plate 400, the second mounting plate 400 is disposed on the drainage container 200, and at least two buckle portions 401 are provided on the side surface of the second mounting plate 400, and the positions of the buckle portions 401 correspond to the positions of the first through grooves 101;

[0061] A driving member 500, the driving member 500 is movably disposed on the first mounting plate 300, and the driving member 500 includes:

[0062] At least two first driving portions 501, the first driving portions 501 are located on the corresponding first through grooves 101;

[0063] During operation, the buckle portion 401 is inserted into the first through groove 101, and the first driving portion 501 contacts the buckle portion 401 and clamps the buckle portion 401;

[0064] During disassembly, the driving member 500 drives the first driving portion 501 to move, so that the first driving portion 501 disengages from the buckle portion 401 to disassemble the drainage container 200.

[0065] In this embodiment, the first mounting plate is provided with a first through hole and a second through hole, the second mounting plate is provided with a third through hole, and the first through hole communicates with the third through hole, so that the pressure in the drainage container can be controlled through the first through hole and the third through hole in the negative pressure machine. Among them, the second through hole is used to be directly connected to the wound for the negative pressure machine to detect the pressure at the wound. The drainage container is further provided with a fourth through hole, and the fourth through hole is connected to the wound through a suction cup catheter, so that a negative pressure is formed at the wound.

[0066] The connection structure of the medical negative pressure suction device in this embodiment is clamped by a plurality of buckle parts 401 and a plurality of the first driving parts 501, effectively reducing the occurrence of air leakage problems, and being convenient for disassembly. By driving the driving component 500 to move, the first driving part 501 is disengaged from the buckle part 401, thereby realizing the disassembly of the drainage container 200, facilitating the cleaning or replacement of the drainage container 200, and effectively solving the technical problem that the existing negative pressure suction device connects the drainage container 200 and the negative pressure machine 100 by embedding the protruding part on the side of the drainage container 200 into the groove on the side of the negative pressure machine 100. However, since the patient needs to get up and walk, the patient will carry the negative pressure suction device and move around, resulting in the loosening of the connection between the drainage container 200 and the negative pressure machine 100 and causing air leakage.

[0067] The first mounting plate 300 can be welded or thread - connected to the side of the negative pressure machine 100, or can be integrally formed with the housing of the negative pressure machine 100;

[0068] The second mounting plate 400 can be welded or thread - connected to the side of the drainage container 200, or can be integrally formed with the housing of the drainage container 200; The drainage container 200 is preferably a container with a transparent housing so as to observe the situation inside it. In particular, it can have a scale on the container so as to observe the liquid situation inside.

[0069] The negative pressure machine 100 is connected to the drainage container 200 so that the drainage container 200 can form a negative pressure and draw external liquid into the drainage container 200.

[0070] In this embodiment, there are three buckle parts 401, which are evenly arranged at 120° on the side of the second mounting plate 400 respectively. Among them, the first driving part 501 corresponds to the buckle part 401;

[0071] In other embodiments, the number of the snap portions 401 may be two, four, five, etc., which is determined according to actual requirements. Generally, the number is not one, because when there is only one snap portion 401, the acting force between the drainage container 200 and the negative pressure machine 100 is insufficient, which easily causes detachment, or the snap portion 401 or the driving portion bears too much pressure and breaks.

[0072] Further, the structure further includes:

[0073] A pressing member 600, which is arranged on the driving member 500, and the pressing member 600 is used to drive the driving member 500 to move by pressing.

[0074] By means of the pressing member 600, the driving member 500 can be controlled, so as to facilitate the control of the disassembly and assembly of the drainage container 200, which is convenient and fast.

[0075] There is a through hole on the outer shell of the negative pressure machine 100, and the pressing member 600 is installed on the through hole. Specifically, the pressing member 600 includes:

[0076] A moving member, which is movably installed on the through hole. Specifically, the moving member has a first protrusion. The moving member passes through the through hole, and the first protrusion is located below the through hole, and its cross-sectional area is larger than the cross-sectional area of the through hole; so that the moving member can move up and down in the through hole, and the pressing member 600 can be directly connected to the driving member 500 to drive the driving member 500 to move up and down.

[0077] In this embodiment, the structure further includes:

[0078] A driving rod 700, which is rotatably arranged in the negative pressure machine 100, and the pressing member 600 is arranged at the first end of the driving rod 700;

[0079] During disassembly, the pressing member 600 acts on the driving rod 700, and the second end of the driving rod 700 can drive the driving member 500 to move upward, so that the first driving portion 501 is separated from the snap portion 401 to disassemble the drainage container 200.

[0080] Both sides of the middle part of the driving rod 700 are provided with rotating shafts, and the rotating shafts are rotatably installed in the negative pressure machine 100. The rotating shafts can be installed in the negative pressure machine 100 in a clearance fit manner, so that the driving rod 700 can rotate forward and backward. That is to say, when the first end of the driving rod 700 is pressed, the first end of the driving rod 700 moves downward, and the second end of the driving rod 700 moves upward;

[0081] By pressing down the first end of the driving rod 700 with the pressing member 600, the first end of the driving rod 700 moves downward, and the second end of the driving rod 700 moves upward, acting on the driving member 500, so that the driving member 500 moves upward, driving the first driving portion 501 to move upward, disengaging from the buckle portion 401, so as to disassemble the drainage container 200.

[0082] In other embodiments, the driving rod 700 may be connected to the driving member 500 or be integral with the driving member 500.

[0083] Specifically, the driving member 500 has a connecting groove, the second end of the driving rod 700 is inserted into the connecting groove, and the upper surface of the second end of the driving rod 700 is in contact with the groove wall of the connecting groove;

[0084] The bottom of the second end of the driving rod 700 has a second driving portion, and the second driving portion corresponds to one of the buckle portions 401;

[0085] During operation, the second driving portion is stuck on its corresponding buckle portion 401;

[0086] During disassembly, the pressing member 600 acts on the driving rod 700, the second end of the driving rod 700 can drive the driving member 500 to move upward, and the second driving portion disengages from its corresponding buckle portion 401, so as to disassemble the drainage container 200.

[0087] The second driving portion can further clamp the buckle. In this embodiment, there are two first driving portions 501 and one second driving portion, corresponding to three first through grooves 101 and three buckle portions 401; the second driving portion can further enhance the strength between the drainage container 200 and the negative pressure machine 100, and facilitate the disassembly of the drainage container 200.

[0088] Furthermore, the structure further includes:

[0089] A second spring 800, the first end of the second spring 800 is arranged inside the negative pressure machine 100, and the second end of the second spring 800 is arranged on the lower surface of the first end of the driving rod 700.

[0090] The second spring 800 can push up the first end of the driving rod 700, so that the pressing member 600 on the driving rod 700 remains in an extended state, and at the same time can maintain the working state of the second driving portion. After the drainage container 200 is disassembled, the second spring 800 can reset the driving rod 700 for the next assembly.

[0091] Further, the first mounting plate 300 includes:

[0092] A mounting portion 302 provided on the first mounting plate 300,

[0093] and the driving component 500 is provided on the mounting portion 302.

[0094] The mounting portion 302 is a protrusion provided on the mounting plate, and the driving component 500 is a plate-shaped component. Among them, two first driving portions 501 are located at the bottom of the driving component 500, and the driving component 500 has a slot between the two driving components 500. The slot is inserted onto the protrusion so that the driving component 500 is kept in position.

[0095] Further, the structure further includes:

[0096] A first spring 900, one end of the first spring 900 is connected to the driving component 500, and the second end of the first spring 900 is connected to the mounting portion 302, and is used to provide a force towards the mounting portion 302 to the driving component 500 when the driving component 500 moves away from the mounting portion 302.

[0097] The first spring 900 provides a pulling force to the driving component 500 when the driving component 500 moves upward, so that the driving component 500 can be reset after the disassembly is completed.

[0098] Further, the first mounting plate 300 further includes:

[0099] A limiting portion 301 provided on the first mounting plate 300, and a preset space is formed between the limiting portion 301 and the first mounting plate 300. The driving component 500 passes through and is arranged in the preset space to limit the driving component 500 in the direction away from the mounting portion 302.

[0100] The limiting portion 301 can be provided on the first mounting plate 300 by means of threaded connection, snap connection or welding, etc., or can be integral with the first mounting plate 300; the second limiting member limits the driving component 500 at a predetermined position, so that it moves up and down close to the first mounting plate 300, thereby avoiding the problem that the driving component 500 is offset, resulting in the first driving portion 501 not being able to engage with the buckle portion 401.

[0101] Further, the buckle portion 401 has a groove;

[0102] The first driving part 501 has an inclined surface, which is located on the surface of the first driving part 501 close to the first mounting plate 300;

[0103] During operation, the buckle part 401 is inserted into the first through groove 101 and crosses the inclined surface, so that the first driving part 501 is inserted into the groove for fastening.

[0104] The inclined surface facilitates the first driving part 501 to enter the groove for fastening. When the pressing part 600 drives the driving component 500 through the driving rod 700, the driving component 500 moves upward, driving both the first driving part 501 and the second driving part to move upward, so that both of them are disengaged from the groove, thereby realizing the disassembly of the drainage container 200.

[0105] An embodiment of the present invention further provides a suction apparatus, which includes:

[0106] A negative pressure machine 100, which has a first ventilation hole;

[0107] A drainage container 200, which has a containing space, a second ventilation hole and a third ventilation hole, and the first ventilation hole is communicated with the second ventilation hole;

[0108] The negative pressure machine 100 and the drainage container 200 are connected together through the connection structure of the medical negative pressure suction apparatus as described above;

[0109] Hydrogel, which is placed in the containing space;

[0110] A drainage tube, which is arranged on the third ventilation hole.

[0111] In this embodiment, by installing a sealing ring on the first through hole of the negative pressure machine 100, and the sealing ring contacts the second through hole to form a sealed environment, the negative pressure machine 100 and the drainage container 200 can be connected without using a catheter, so that the negative pressure machine 100 and the drainage container 200 form an integral mechanism, improving the portability of use;

[0112] In this embodiment, by adding a breathable and water-blocking film at the second ventilation hole, it is possible to prevent the backflow of the leaked liquid into the negative pressure machine 100.

[0113] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the above-described pipeline can refer to the corresponding process in the embodiment of the connection structure of a medical negative pressure suction apparatus, and will not be described in detail here.

[0114] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A connecting structure of a medical negative pressure suction device, characterized in that, For a suction device, the suction device includes a negative pressure machine and a drainage container, and the structure includes: A first mounting plate, the first mounting plate is provided on the negative pressure machine, and at least two first through grooves are provided on the first mounting plate; A second mounting plate, the second mounting plate is provided on the drainage container, and at least two buckle portions are provided on the side surface of the second mounting plate, and the positions of the buckle portions correspond to the positions of the first through grooves; A driving component, the driving component is movably provided on the first mounting plate, and the driving component includes: At least two first driving portions, the first driving portions are located on the corresponding first through grooves; During operation, the buckle portion is inserted into the first through groove, and the first driving portion contacts the buckle portion and clamps the buckle portion; During disassembly, the driving component drives the first driving portion to move, so that the first driving portion disengages from the buckle portion to disassemble the drainage container; The structure further includes: A pressing member, the pressing member is provided on the driving component, and the pressing member is used to drive the driving component to move by pressing; The first mounting plate further includes: A mounting portion, the mounting portion is provided on the first mounting plate; A limiting portion, the limiting portion is provided on the first mounting plate, and a preset space is formed between the limiting portion and the first mounting plate, and the driving component passes through and is provided in the preset space to limit the driving component in the direction away from the mounting portion; A first through hole and a second through hole are provided on the first mounting plate, and a third through hole is provided on the second mounting plate, and the first through hole is communicated with the third through hole, so that the pressure in the drainage container can be controlled by the first through hole and the third through hole in the negative pressure machine.

2. The connection structure of the medical negative pressure suction device according to claim 1, wherein, The first mounting plate includes: A mounting portion, the mounting portion is provided on the first mounting plate, The driving component is provided on the mounting portion.

3. The connection structure of the medical negative pressure suction device according to claim 2, characterized in that, The structure further includes: A first spring, one end of the first spring is connected to the driving component, and the second end of the first spring is connected to the mounting portion, and is used to provide a force towards the mounting portion for the driving component when the driving component moves in a direction away from the mounting portion.

4. The connection structure of the medical negative pressure aspirator according to claim 1, characterized in that, The buckle portion has a groove; The first driving portion has an inclined surface, and the inclined surface is located on the surface of the first driving portion close to the first mounting plate; During operation, the buckle portion is inserted into the first through groove and crosses the inclined surface, so that the first driving portion is inserted into the groove for clamping.

5. The connecting structure of the medical negative pressure suction device according to claim 1, characterized in that, The structure further includes: A driving rod, the driving rod is rotatably provided in the negative pressure machine, and the pressing member is provided at the first end of the driving rod; During disassembly, the pressing member acts on the driving rod, and the second end of the driving rod can drive the driving component to move upward, so that the first driving portion disengages from the buckle portion to disassemble the drainage container.

6. The connection structure of the medical negative pressure suction device according to claim 5, characterized in that, A connecting groove is provided on the driving component, and the second end of the driving rod is inserted into the connecting groove, and the upper surface of the second end of the driving rod contacts the groove wall of the connecting groove; A second driving portion is provided at the bottom of the second end of the driving rod, and the second driving portion corresponds to one of the buckle portions; During operation, the second driving part is stuck on its corresponding buckle part; During disassembly, the pressing part acts on the driving rod, the second end of the driving rod can drive the driving component to move upward, and the second driving part disengages from its corresponding buckle part to disassemble the drainage container.

7. The connection structure of the medical negative pressure suction device according to claim 6, characterized in that, The structure further includes: A second spring, the first end of the second spring is arranged in the negative pressure machine, and the second end of the second spring is arranged on the lower surface of the first end of the driving rod.

8. An aspirator, characterized in that, The aspirator includes: A negative pressure machine, the negative pressure machine has a first ventilation hole; A drainage container, the drainage container has a containing space, a second ventilation hole and a third ventilation hole, and the first ventilation hole is communicated with the second ventilation hole; The negative pressure machine and the drainage container are connected together through the connection structure of the medical negative pressure aspirator described in any one of claims 1-7 above; Hydrogel, the hydrogel is placed in the containing space; A drainage tube, the drainage tube is arranged on the third ventilation hole.

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