Negative pressure drainage device

Abstract

The utility model relates to a negative pressure drainage device which comprises a bottle body and a bottle cap. Wherein the top of the bottle body is in threaded connection with the bottle cap; a liquid level scale piece and a liquid level alarm are fixedly arranged on the outer wall of the bottle body; wherein the liquid level scale piece is provided with a liquid level cavity, a buoyancy ruler is movably arranged in the liquid level cavity, a communicating hole is formed in the bottom of the liquid level scale piece, and the liquid level cavity is communicated with a bottle cavity of the bottle body through the communicating hole; a drainage assembly, a negative pressure assembly and a safety valve are arranged on the bottle cap in a penetrating mode. The drainage assembly comprises a drainage connector and a drainage tube, wherein the drainage connector penetrates through the bottle cap, and the drainage tube is detachably arranged at the top end of the drainage connector; the possibility that the wound dressing is polluted is reduced, so that the infection risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a negative pressure drainage device. Background Art

[0002] Existing medical suction devices have the problem of lacking an effective anti-reflux design when dealing with patients with a large amount of drainage fluid or those who need continuous wound irrigation. During actual operation, if the drainage fluid accumulates rapidly and the nursing staff fails to detect and drain or replace the suction device in time, it is very likely that the drainage fluid will flow back into the wound area, seriously contaminating the wound dressing and even re-infiltrating the wound, greatly increasing the risk of wound infection, which is undoubtedly a great threat to wound healing, especially during the application of Vacuum Sealing Drainage (VSD).

[0003] During VSD treatment, maintaining stable negative pressure conditions is crucial for wound healing. However, various factors such as patient body position changes, insufficiently tight pipeline connections, internal blockages in the pipeline, or pipeline folding and kinking may lead to the failure of the negative pressure system, that is, the negative pressure value cannot be maintained within the effective treatment range, further affecting the drainage and healing process of the wound surface. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a negative pressure drainage device for the deficiencies in the prior art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] Provide a negative pressure drainage device, including: a bottle body and a bottle cap; wherein,

[0007] The top of the bottle body is threadedly connected to the bottle cap;

[0008] A liquid level scale member and a liquid level alarm are fixedly arranged on the outer wall of the bottle body;

[0009] Among them, the liquid level scale member has a liquid level cavity, a buoyancy ruler is movably arranged in the liquid level cavity, a communication hole is opened at the bottom of the liquid level scale member, and the liquid level cavity is communicated with the bottle cavity of the bottle body through the communication hole;

[0010] The bottle cap is provided with a drainage component, a negative pressure component, and a safety valve through it;

[0011] Among them, the drainage component includes: a drainage interface and a drainage tube;

[0012] Among them, the drainage interface penetrates through the bottle cap, and the drainage tube is detachably arranged at the top end of the drainage interface;

[0013] Among them, the negative pressure component includes: a negative pressure interface and a negative pressure tube;

[0014] Among them, the negative pressure interface penetrates through the bottle cap, and the negative pressure tube is detachably arranged at the top end of the negative pressure interface.

[0015] Preferably, the cross-section of the buoyancy ruler is oval.

[0016] Preferably, a sealing ring is fixedly arranged on the inner edge of the bottle cap, and the sealing ring is arranged at the connection between the bottle body and the bottle cap to seal the bottle cavity of the bottle body.

[0017] Preferably, the drainage component further includes: a one-way valve interface and a one-way valve; among them,

[0018] The one-way valve interface is fixedly arranged at the bottom end of the drainage interface;

[0019] The one-way valve is detachably arranged at the bottom end of the one-way valve interface.

[0020] Preferably, the one-way valve includes: a plurality of inlets, a diversion partition, a one-way valve seat, an elastic valve plug, a spring, and a plurality of outlets; among them,

[0021] A plurality of the inlets are opened at the top end of the one-way valve;

[0022] The diversion partition is fixedly arranged on the inner wall at the top end of the one-way valve, and the diversion partition encloses to form a first diversion channel;

[0023] The one-way valve seat has a top end and a bottom end that match the first diversion channel; the one-way valve seat operably blocks or conducts the first diversion channel;

[0024] The elastic valve plug is fixedly arranged on the inner wall at the bottom end of the one-way valve, and the elastic valve plug encloses to form a second diversion channel that matches the bottom end of the one-way valve seat. The elastic valve plug operably approaches or moves away from the bottom end of the one-way valve seat to block or conduct the second diversion channel;

[0025] One end of the spring is fixedly connected to the bottom end of the one-way valve, and the other end of the spring is fixedly connected to the bottom end of the one-way valve seat;

[0026] A plurality of the outlets are opened at the bottom end of the one-way valve.

[0027] Preferably, the cross-section of the top end of the one-way valve seat is conical.

[0028] Preferably, the cross-section of the bottom end of the one-way valve seat is trapezoidal, and the length of the bottom side of the trapezoid close to the top end of the one-way valve seat is greater than the length of the bottom side of the trapezoid close to the bottom end of the one-way valve seat.

[0029] Preferably, the thickness of the elastic valve plug gradually increases from the end of the elastic valve plug close to the one-way valve seat to the end of the elastic valve plug close to the wall surface of the one-way valve.

[0030] Preferably, a filter membrane is provided inside the safety valve.

[0031] Adopting the above technical solutions, compared with the prior art, the present utility model has the following technical effects:

[0032] The present utility model introduces a one-way valve, effectively avoiding the reverse flow phenomenon of the drainage fluid during the drainage process. Even if the amount of drainage fluid suddenly increases or the nurse fails to handle it in time, it can ensure that the drainage fluid cannot flow back, reducing the possibility of the wound dressing being contaminated, thereby reducing the infection risk and being beneficial to wound healing. The negative pressure component can strengthen the tightness of the pipeline connection;

[0033] The liquid level alarm can real-time feedback the liquid level and pipeline status, enabling medical staff to immediately master the working condition of the suction device, promptly troubleshooting, ensuring that the liquid level is always within a stable range, and enhancing the controllability and reliability of the treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is an axonometric structural schematic diagram of the present utility model;

[0035] Figure 2 is a sectional structural schematic diagram of the present utility model;

[0036] Figure 3 is a sectional structural schematic diagram of the one-way valve in the present utility model;

[0037] Among them, the reference numerals include:

[0038] Bottle body 1; Liquid level scale member 14; Buoyancy ruler 141; Liquid level alarm 15; Bottle cap 2; Drainage assembly 21; Drainage interface 211; Drainage tube 212; One-way valve interface 213; One-way valve 214; One-way valve seat 2141; Flow guiding partition 2142; Elastic valve plug 2143; Inlet 2144; Outlet 2145; Spring 2146; Negative pressure assembly 22; Negative pressure interface 221; Negative pressure tube 222; Safety valve 23; Sealing ring 24. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0040] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0041] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not limited to the present utility model.

[0042] Embodiment

[0043] This embodiment provides a negative pressure drainage device, including: as Figure 1 and Figure 2 shown, a bottle body 1 and a bottle cap 2; wherein,

[0044] The top of the bottle body 1 is threadedly connected to the bottle cap 2;

[0045] A liquid level scale member 14 and a liquid level alarm 15 are fixedly arranged on the outer wall of the bottle body 1;

[0046] Among them, the liquid level scale member 14 has a liquid level cavity, in which a buoyancy ruler 141 with an elliptical cross-section is movably arranged. A communication hole is opened at the bottom of the liquid level scale member 14, and the liquid level cavity is communicated with the bottle cavity of the bottle body 1 through the communication hole;

[0047] A drainage assembly 21, a negative pressure assembly 22, and a safety valve 23 are penetratingly arranged on the bottle cap 2. A rubber sealing ring 24 is fixedly arranged on the inner edge of the bottle cap 2. The sealing ring 24 is arranged at the connection between the bottle body 1 and the bottle cap 2 to seal the bottle cavity of the bottle body 1;

[0048] Among them, the drainage assembly 21 includes: a drainage interface 211, a drainage tube 212, a one-way valve interface 213, and a one-way valve 214;

[0049] Among them, the drainage interface 211 penetrates through the bottle cap 2. The drainage tube 212 is detachably arranged at the top end of the drainage interface 211. The one-way valve interface 213 is fixedly arranged at the bottom end of the drainage interface 211. The one-way valve 214 is detachably arranged at the bottom end of the one-way valve interface 213. The one-way valve 214 includes: a plurality of inlets 2144, a diversion partition 2142, a one-way valve seat 2141, an elastic valve plug 2143, a spring 2146, and a plurality of outlets 2145;

[0050] Among them, a plurality of the inlets 2144 are opened at the top end of the one-way valve 214;

[0051] Among them, the flow guiding partition 2142 is fixedly arranged on the inner wall of the top end of the one-way valve 214, and the flow guiding partition 2142 encloses to form a first flow guiding channel;

[0052] Among them, the one-way valve seat 2141 has a top end and a bottom end that match the first flow guiding channel; the one-way valve seat 2141 operably blocks or conducts the first flow guiding channel;

[0053] Among them, the elastic valve plug 2143 is fixedly arranged on the inner wall of the bottom end of the one-way valve 214. The thickness of the elastic valve plug 2143 gradually increases from the end of the elastic valve plug 2143 close to the one-way valve seat 2141 to the end of the elastic valve plug 2143 close to the wall surface of the one-way valve 214. The elastic deformation ability of the elastic valve plug 2143 gradually increases from the end of the elastic valve plug 2143 close to the one-way valve seat 2141 to the end of the elastic valve plug 2143 close to the wall surface of the one-way valve 214. The elastic valve plug 2143 encloses to form a second flow guiding channel that matches the bottom end of the one-way valve seat 2141. The elastic valve plug 2143 operably approaches or moves away from the bottom end of the one-way valve seat 2141 to block or conduct the second flow guiding channel;

[0054] Among them, one end of the spring 2146 is fixedly connected to the bottom end of the one-way valve 214, and the other end of the spring 2146 is fixedly connected to the bottom end of the one-way valve seat 2141;

[0055] Among them, a plurality of the outlets 2145 are opened at the bottom end of the one-way valve 214;

[0056] Among them, the negative pressure assembly 22 includes: a negative pressure interface 211 and a negative pressure pipe 222;

[0057] Among them, the negative pressure interface 221 penetrates through the bottle cap 2, and the negative pressure pipe 222 is detachably arranged at the top end of the negative pressure interface 221;

[0058] A filter membrane is arranged inside the safety valve 23.

[0059] In a preferred embodiment, the cross-section of the top end of the one-way valve seat 2141 is conical, the cross-section of the bottom end of the one-way valve seat 2141 is trapezoidal, and the length of the bottom side of the trapezoid close to the top end of the one-way valve seat 2141 is greater than the length of the bottom side of the trapezoid close to the bottom end of the one-way valve seat 2141.

[0060] In a preferred embodiment, the liquid level alarm 15 adopts a non-contact liquid level sensor with the model of DJK-A8 produced by Shenzhen Dianjinlian Technology Co., Ltd. Those skilled in the art can apply the above alarm device to this application without any creative labor.

[0061] During use, the negative pressure tube 222 of the negative pressure assembly 22 is connected to a negative pressure source. When the negative pressure in the bottle cavity reaches the pressure value, the drainage liquid passes through the drainage tube 212, the drainage interface 211, and the one-way valve interface 213 in sequence, and then enters the normally closed one-way valve 214 through several inlets 2144. When the hydraulic pressure is greater than the elastic force of the spring 2146, the one-way valve seat 2141 operably moves away from the diversion partition 2142 to conduct the first diversion channel; when the hydraulic pressure is greater than the elastic force of the elastic valve plug 2143, several elastic valve plugs 2143 operably move away from the one-way valve seat 2141 to conduct the second diversion channel; the liquid flows out of the one-way valve 214 through several outlets 2145 and enters the bottle cavity.

[0062] The drainage liquid enters the liquid level cavity through the communication hole. The liquid level cavity and the bottle cavity form a communicating vessel. The buoyancy scale 141 always floats on the liquid surface of the drainage liquid to mark the liquid level of the drainage liquid in the bottle cavity.

[0063] If the liquid enters the one-way valve 214 through several outlets 2145, the elastic valve plug 2143 closely adheres to the one-way valve seat 2141 under the action of the hydraulic pressure, and the second diversion channel is blocked; at the same time, the one-way valve seat 2141 also blocks the first diversion channel under the action of the hydraulic pressure; the liquid cannot flow out of the one-way valve 214 through several inlets 2144, ensuring the wound cleanliness and reducing the infection risk.

[0064] In summary, the present utility model introduces a one-way valve, effectively avoiding the reverse flow phenomenon of the drainage liquid during the drainage process. Even if the amount of drainage liquid suddenly increases or the nurse fails to handle it in time, it can ensure that the drainage liquid cannot flow back, reducing the possibility of the wound dressing being contaminated, thereby reducing the infection risk and being beneficial to wound healing. The negative pressure assembly can strengthen the tightness of the pipeline connection;

[0065] The liquid level alarm can real-time feedback the liquid level and pipeline status, enabling medical staff to immediately grasp the working condition of the suction device, promptly eliminate faults, ensure that the liquid level is always within a stable range, and enhance the controllability and reliability of the treatment process.

[0066] The above are only the preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrations of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A negative pressure drainage device, characterized in that: include: A bottle body (1) and a bottle cap (2); wherein the top of the bottle body (1) is threadedly connected to the bottle cap (2); A liquid level scale (14) and a liquid level alarm (15) are fixedly arranged on the outer wall of the bottle body (1); The liquid level scale (14) has a liquid level cavity, a buoyancy ruler (141) is movably arranged in the liquid level cavity, a communicating hole is provided at the bottom of the liquid level scale (14), and the liquid level cavity is connected with the bottle cavity of the bottle body (1) through the communicating hole; The bottle cap (2) is provided with a drainage component (21), a negative pressure component (22), and a safety valve (23) penetrating therethrough; Wherein, the drainage component (21) comprises: a drainage interface (211) and a drainage tube (212); The drainage interface (211) is arranged to penetrate the bottle cap (2), and the drainage tube (212) is detachably arranged at the top of the drainage interface (211); Wherein, the negative pressure component (22) comprises: a negative pressure interface (221) and a negative pressure tube (222); The negative pressure interface (221) is disposed through the bottle cap (2), and the negative pressure tube (222) is detachably disposed at the top end of the negative pressure interface (221).

2. The negative pressure drainage device according to claim 1, characterized in that: The cross section of the buoyancy ruler (141) is elliptical.

3. The negative pressure drainage device according to claim 1, characterized in that: A sealing ring (24) is fixedly arranged on the inner edge of the bottle cap (2); the sealing ring (24) is arranged at the connection between the bottle body (1) and the bottle cap (2) to seal the bottle cavity of the bottle body (1).

4. The negative pressure drainage device according to claim 1, characterized in that: The drainage assembly (21) further comprises: a one-way valve interface (213) and a one-way valve (214); wherein: The one-way valve interface (213) is fixedly arranged at the bottom end of the drainage interface (211); The one-way valve (214) is detachably arranged at the bottom end of the one-way valve interface (213).

5. The negative pressure drainage device according to claim 4, characterized in that: The one-way valve (214) comprises: a plurality of inlets (2144), a flow guide baffle (2142), a one-way valve seat (2141), an elastic valve plug (2143), a spring (2146), and a plurality of outlets (2145); wherein, A plurality of inlets (2144) are provided at the top end of the one-way valve (214); The guide baffle (2142) is fixedly arranged on the inner wall of the top end of the one-way valve (214), and the guide baffle (2142) is surrounded to form a first guide channel; The one-way valve seat (2141) has a top end and a bottom end matching the first flow guiding channel; the one-way valve seat (2141) is operable to block or open the first flow guiding channel; The elastic valve plug (2143) is fixedly arranged on the inner wall of the bottom end of the one-way valve (214), and the elastic valve plug (2143) is surrounded by a second guide channel that matches the bottom end of the one-way valve seat (2141). The elastic valve plug (2143) is operatively moved close to or away from the bottom end of the one-way valve seat (2141) to block or open the second guide channel. One end of the spring (2146) is fixedly connected to the bottom end of the one-way valve (214), and the other end of the spring (2146) is fixedly connected to the bottom end of the one-way valve seat (2141); A plurality of the outlets (2145) are opened at the bottom end of the one-way valve (214).

6. The negative pressure drainage device according to claim 5, characterized in that: The cross-section of the top end of the one-way valve seat (2141) is conical.

7. The negative pressure drainage device according to claim 5, characterized in that: The cross-section of the bottom end of the one-way valve seat (2141) is trapezoidal, and the length of the bottom edge of the trapezoid close to the top end of the one-way valve seat (2141) is greater than the length of the bottom edge of the trapezoid close to the bottom end of the one-way valve seat (2141).

8. The negative pressure drainage device according to claim 5, characterized in that: The thickness of the elastic valve plug (2143) gradually increases from the end of the elastic valve plug (2143) close to the one-way valve seat (2141) to the end of the elastic valve plug (2143) close to the wall of the one-way valve (214).

9. The negative pressure drainage device according to claim 1, characterized in that: A filter membrane is arranged inside the safety valve (23).

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