Medical negative pressure drainage device

Abstract

The utility model discloses a medical negative pressure drainage device which comprises a bottom plate and a cover plate, a negative pressure drainage cavity is formed among the bottom plate, the cover plate and a compressible sealing side wall, two hose connectors are fixedly installed on one side of the cover plate, one hose connector is connected with a connecting hose, one end of the connecting hose is fixedly provided with a special-shaped connector, and the other end of the special-shaped connector is connected with the other side of the cover plate. Clamping holes matched with the special-shaped joints are formed in the two hose joints, anti-falling barbs are arranged on the special-shaped joints, and anti-falling clamping grooves matched with the anti-falling barbs are formed in the clamping holes; a flange is arranged at the position, on the same side with the hose connector, of the bottom plate, and a lifting hole is formed in the flange. According to the medical negative pressure drainage device, the barb locking design is adopted, the special-shaped connector cannot be disengaged from the hose connector, and therefore the situation of accidental disengagement is fundamentally eradicated, the hose connector can be located at the highest point of the drainage device when the drainage device is hung, the situation of waste liquid backflow is greatly reduced, and the probability of secondary pollution injury to a patient is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a medical negative pressure drainage device, which is used for an extracorporeal liquid circuit negative pressure drainage container connected to a drainage catheter inserted into the body after surgery. Background Art

[0002] The hose interface on the drains currently on the market adopts a single cone design, while the hose connector adopts a cone step design. In clinical practice, this type of design does not have a connector locking function. Even if the two are connected together with force during use, the interface and connector still commonly fall off accidentally, causing the waste liquid in the drain to overflow or even splash. In order to prevent the fall-off phenomenon, nursing staff often use medical tape to wrap the connection to reinforce it. However, this treatment method not only increases the workload of nursing staff but also only slightly improves the fall-off situation. The anti-fall-off effect is not obvious. At the same time, the installation position of the hose interface on the drains currently on the market on the cover is opposite to the direction of the hanging hole on the drain base. During clinical drainage, when the patient gets out of bed and hangs the drain on the patient's clothes, the drain will be tilted, causing the hose interface to be submerged and filled with the waste liquid surface (such as Figure 8 As shown in the figure, it is very easy for the waste liquid in the drain to flow back into the pipeline or even into the patient's body through the hose interface due to accidental squeezing of the drain, causing secondary contamination and damage to the pipeline and the patient. Utility Model Content

[0003] The purpose of the utility model is to provide a medical negative pressure drain, which adopts a barb locking design, so that the special-shaped joint will not fall off from the hose joint, thereby fundamentally preventing the accidental falling off. When the drain is hung, the hose joint will also be at the highest point of the drain, greatly reducing the reflux of waste liquid and the probability of secondary contamination injury to the patient, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A medical negative pressure drain device comprises a base plate and a cover plate, wherein a compressible sealing side wall is fixedly installed between the base plate and the cover plate, a negative pressure drainage chamber is formed between the base plate, the cover plate and the compressible sealing side wall, a spring is arranged in the negative pressure drainage chamber, the top and bottom ends of the spring are respectively abutted against the cover plate and the base plate; two hose connectors are fixedly installed on one side of the cover plate, one of the hose connectors is connected with a connecting hose, a special-shaped connector is fixedly installed on one end of the connecting hose, and a drainage catheter connector is fixedly installed on the other end, both of the hose connectors are provided with a clamping hole matching with the special-shaped connector, the special-shaped connector is provided with an anti-detachment hook, and the clamping hole is provided with an anti-detachment clamping groove matching with the anti-detachment hook; a flange is arranged on the base plate at the same side as the hose connector, and a hanging hole is arranged on the flange.

[0006] Preferably, the base plate, the cover plate and the compressible sealing side wall are all circular structures, the cover plate and the compressible sealing side wall have the same diameter, the base plate has a diameter larger than the diameters of the two, and the edges are surrounded by a skirt, and the flange is arranged on the skirt.

[0007] Preferably, the compressible sealing side wall is a transparent visible structure, and a scale is provided on the compressible sealing side wall.

[0008] Preferably, protective caps are fixedly connected to the two hose connectors via soft connecting pieces.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] When the hose connector and the connecting hose of the medical negative pressure drain are connected, after the special-shaped connector is inserted into the clamping hole, the anti-detachment barb on the special-shaped connector is clamped into the anti-detachment clamping groove in the clamping hole, thereby firmly locking the special-shaped connector in the clamping hole. Since the hose connector is made of elastic plastic material and the special-shaped connector is made of hard plastic material, the hose connector and the special-shaped connector are tightly matched after the barb is locked. In the case of friction and squeezing when the patient turns over or gets up, the special-shaped connector will not fall off from the hose connector, thereby fundamentally preventing the occurrence of accidental detachment; when the patient gets out of bed and hangs the drain on the patient's clothes, even if the drain is tilted, the hose connector will be at the highest point of the drain. Even if accidental squeezing occurs, since the installation height of the hose interface is higher than the height of the waste liquid level drained out, and because of the residual effect of the drain volume itself, the reflux of the waste liquid is greatly reduced, and the probability of secondary contamination and injury to the patient is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the structure of a medical negative pressure drainage device provided by the utility model Figure 1 ;

[0012] Figure 2 A schematic diagram of the structure of a medical negative pressure drainage device provided by the utility model Figure 2 ;

[0013] Figure 3 A schematic diagram of the separation of a connecting hose of a medical negative pressure drainage device provided by the utility model;

[0014] Figure 4 A schematic diagram of the main body compression of a medical negative pressure drainage device provided by the utility model;

[0015] Figure 5 A schematic diagram of the internal structure of a compressible sealing side wall of a medical negative pressure drainage device provided by the utility model;

[0016] Figure 6 A schematic diagram of the connection between a connecting hose and a special-shaped connector of a medical negative pressure drainage device provided by the utility model;

[0017] Figure 7 A cross-sectional schematic diagram of a hose connector of a medical negative pressure drainage device provided by the utility model;

[0018] Figure 8 This is a schematic diagram of a drainage device currently on the market being hung on a patient's clothes during clinical use, where it tilts during the drainage process, causing the hose interface to be submerged by the surface of the drained waste liquid.

[0019] In the figure: 1. bottom plate; 2. cover plate; 3. compressible sealing side wall; 4. negative pressure drainage chamber; 5. spring; 6. hose connector; 7. connecting hose; 8. special-shaped connector; 9. drainage catheter connector; 10. clamping hole; 11. anti-drop hook; 12. anti-drop clamping slot; 13. flange; 14. hanging hole; 15. skirt; 16. scale; 17. soft connecting piece; 18. protective cap. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-7 The utility model provides a medical negative pressure drainage device, comprising a bottom plate 1 and a cover plate 2, a compressible sealing side wall 3 is fixedly installed between the bottom plate 1 and the cover plate 2, a negative pressure drainage chamber 4 is formed between the bottom plate 1, the cover plate 2 and the compressible sealing side wall 3, a spring 5 is arranged in the negative pressure drainage chamber 4, the top and bottom ends of the spring 5 are respectively stopped on the cover plate 2 and the bottom plate 1; two hose connectors 6 made of elastic plastic material are fixedly installed on one side of the cover plate 2, and one of the hose connectors 6 is connected with a connection A hose 7 is provided, and a special-shaped connector 8 made of hard plastic material is fixedly installed on one end of the connecting hose 7, and a drainage catheter connector 9 is fixedly installed on the other end. A clamping hole 10 matching the special-shaped connector 8 is provided on the two hose connectors 6, and an anti-detachment barb 11 is provided on the special-shaped connector 8. An anti-detachment clamping groove 12 matching the anti-detachment barb 11 is provided in the clamping hole 10; a flange 13 is provided on the bottom plate 1 at the same side as the hose connector 6, and a hanging hole 14 is provided on the flange 13.

[0023] When the hose connector 6 and the connecting hose 7 of the medical negative pressure drain are connected, after the special-shaped connector 8 is inserted into the clamping hole 10, the anti-detachment barb 11 on the special-shaped connector 8 is clamped into the anti-detachment clamping groove 12 in the clamping hole 10, and then the special-shaped connector 8 is firmly locked in the clamping hole 10. Since the hose connector 6 is made of elastic plastic material and the special-shaped connector 8 is made of hard plastic material, the hose connector 6 and the special-shaped connector 8 are closely matched after the barb is locked. In the case of friction and squeezing when the patient turns over or stands up, the special-shaped connector 8 will not fall off from the hose connector 6, thereby fundamentally preventing the occurrence of accidental detachment; when the patient gets out of bed and hangs the drain on the patient's clothes, even if the drain is tilted, the hose connector 6 will be at the highest point of the drain. Even if accidental squeezing occurs, since the installation height of the hose interface is higher than the height of the waste liquid level drained out, and because of the residual effect of the drain volume itself, the reflux of the waste liquid is greatly reduced, and the probability of secondary contamination and injury to the patient is reduced.

[0024] Based on the above-mentioned medical negative pressure drain, its base plate 1, cover plate 2 and compressible sealing side wall 3 are all circular structures, the diameters of the cover plate 2 and the compressible sealing side wall 3 are the same, the diameter of the base plate 1 is larger than the diameters of the two, and the edges are formed with a skirt 15, the flange 13 is arranged on the skirt 15, and the skirt 15 is convenient for taking the medical negative pressure drain. The compressible sealing side wall 3 is a transparent visible structure, and a scale 16 is arranged on the compressible sealing side wall 3, which is convenient for observing the amount of waste liquid drained out of the negative pressure drainage cavity 4. At the same time, the two hose connectors 6 are fixedly connected with protective caps 18 through soft connecting pieces 17. The protective caps 18 are used to cover the hose connectors 6. When not in use, dust and the like can be prevented from entering the negative pressure drainage cavity 4 through the card hole 10. When in use, the hose connector 6 that is not connected to the connecting hose 7 can be sealed by the protective cap 18, and no other sealing plugs are required.

[0025] When the medical negative pressure drainage device is used, the protective caps 18 on the two hose connectors 6 are opened, the special-shaped connector 8 on the connecting hose 7 is inserted into the clamping hole 10 in any one of the hose connectors 6, one end of the connecting hose 7 is connected to the negative pressure drainage cavity 4, the drainage catheter connector 9 is connected to the drainage catheter inserted into the body, the cover plate 2 is pressed to compress the spring 5 to exhaust the air inside the drainage device, and the protective cap 18 on the other hose connector 6 is covered. After stopping pressing, the medical negative pressure drainage device performs negative pressure drainage.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical negative pressure drain, comprising a base plate (1) and a cover plate (2), characterized in that: A compressible sealing side wall (3) is fixedly installed between the bottom plate (1) and the cover plate (2); a negative pressure drainage chamber (4) is formed between the bottom plate (1), the cover plate (2) and the compressible sealing side wall (3); a spring (5) is arranged in the negative pressure drainage chamber (4); the top and bottom ends of the spring (5) are respectively abutted against the cover plate (2) and the bottom plate (1); two hose connectors (6) are fixedly installed on one side of the cover plate (2); one of the hose connectors (6) is connected to a connecting hose (7); the connecting hose (7) ) is fixedly mounted on one end thereof with a special-shaped connector (8), and a drainage catheter connector (9) is fixedly mounted on the other end thereof; both of the two hose connectors (6) are provided with a clamping hole (10) matching with the special-shaped connector (8); the special-shaped connector (8) is provided with an anti-detachment hook (11); the clamping hole (10) is provided with an anti-detachment groove (12) matching with the anti-detachment hook (11); a flange (13) is provided on the bottom plate (1) at the same side as the hose connector (6); and a hanging hole (14) is provided on the flange (13).

2. A medical negative pressure drainage device according to claim 1, characterized in that: The bottom plate (1), the cover plate (2) and the compressible sealing side wall (3) are all circular structures. The cover plate (2) and the compressible sealing side wall (3) have the same diameter. The bottom plate (1) has a diameter greater than the diameters of the two. The edges are surrounded by a skirt (15). The flange (13) is arranged on the skirt (15).

3. A medical negative pressure drainage device according to claim 2, characterized in that: The compressible sealing side wall (3) is a transparent visible structure, and a scale (16) is provided on the compressible sealing side wall (3).

4. A medical negative pressure drainage device according to claim 1, characterized in that: The two hose connectors (6) are both fixedly connected with protective caps (18) via soft connecting pieces (17).

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