Disposable chest drainage system
By designing a combined structure of valve core, sealing assembly and elastic parts in the chest drainage system, the sealing problem of the negative pressure release valve is solved, efficient and safe drainage effect is achieved, and the risk of leakage is reduced.
Patent Information
- Application Number
- CN202422002477.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-08-19
AI Technical Summary
In existing disposable chest drainage systems, the negative pressure release valve has poor sealing performance, which causes air or liquid leakage, affecting drainage effect and patient safety.
A negative pressure relief valve including a valve core, a sealing assembly and an elastic part is designed. Through the combination of a sealing groove, a trapezoidal sealing ring and an elastic part, the valve is ensured to open and close stably under high and low pressures to prevent leakage.
It achieves effective control and release of negative pressure, improves the sealing performance and safety of the drainage system, reduces the risk of leakage, and ensures the safety and continuity of the drainage process.
Smart Images
Figure CN223438892U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical equipment technical field more specifically, relate to disposable thoracic drainage system. BACKGROUND
[0002] In order to prevent the harm caused by the excessive negative pressure in the thoracic cavity to the patient, the disposable thoracic drainage system is usually provided with a negative pressure release valve, which will automatically open when the negative pressure in the thoracic cavity exceeds the set value to release the excess negative pressure and protect the safety of the patient. However, the instability of the elastic member may affect the sealing performance of the valve during the operation of releasing the negative pressure, leading to air or liquid leakage and affecting the drainage effect. Therefore, a new scheme is needed to solve the problem of poor sealing of the negative pressure release valve in the disposable thoracic drainage system. SUMMARY
[0003] In view of the deficiencies in the prior art, the utility model aims to provide a disposable thoracic drainage system that improves the sealing performance of the negative pressure release valve in the disposable thoracic drainage system through the structure.
[0004] The above technical purpose of the utility model is achieved by the following technical scheme: a disposable thoracic drainage system includes a bottle body, a bottle cap fixedly connected to the bottle body, a negative pressure release valve provided on the bottle cap, a valve seat fixedly connected to the bottle cap, and a valve core provided in the valve seat. A through hole is formed in the center of the valve seat, and the valve core passes through the through hole to protrude out of the bottle body. A sealing assembly is fixedly connected to one end of the valve core inside the bottle body near the through hole. When the negative pressure release valve is in a closed state, the sealing assembly exerts a radial force on the inner side wall of the valve seat and the inner side wall of the through hole.
[0005] The utility model is further provided as follows: the valve core includes a core column and a core seat fixedly connected to one end of the core column near the sealing assembly. A sealing groove is formed in the inner side wall of the through hole. The sealing assembly includes a sealing member fixedly connected in the sealing groove. The volume of the sealing member is greater than the volume of the sealing groove.
[0006] The utility model is further provided as follows: the core column is provided with a sealing section. The diameter of the sealing section is greater than the inner diameter of the sealing member. The diameter of the core column is less than the inner diameter of the sealing member.
[0007] The utility model is further provided as follows: the sealing assembly further includes a sealing ring. The sealing ring is fixedly connected to the outer peripheral wall of the core seat.
[0008] The utility model is further provided as follows: the cross section of the sealing ring is set as a trapezoidal shape. The lower edge of the core seat inside the bottle body is provided with a chamfer.
[0009] The utility model further sets up: the one end of core seat is fixedly connected with elastic part away from core column, the one end of elastic part is fixedly connected with connecting seat away from core seat.
[0010] The utility model further sets up: the one end of valve seat is fixedly connected with extension away from bottle body one side end face, the one end of extension is equipped with the clamping groove away from valve seat, the both ends of connecting seat correspondingly are clamped in clamping groove.
[0011] The utility model further sets up: negative pressure release valve still includes the bonnet of covering in core column top.
[0012] Summarized above, the utility model has following beneficial effect:
[0013] The disposable thoracic drainage system passes through the high sealing negative pressure release valve, realizes the effective control and release of negative pressure, ensures the safety and continuity of drainage process, and the sealing assembly and trapezoidal sealing ring structure improve the sealing performance of bottle body together, the structure stability of valve core, elastic part and safety locking mechanism further enhance the reliability and safety of disposable thoracic drainage, the drainage system reduces the risk of leakage while guaranteeing efficient drainage, provides more safe and reliable treatment experience for patients. ACCURACY OF DRAWINGS
[0014] Figure 1 It is structure schematic drawing of the utility model;
[0015] Figure 2 It is structure schematic drawing of negative pressure release valve;
[0016] Figure 3 It is structure schematic drawing of valve core;
[0017] Figure 4 It is the sectional view of negative pressure release valve when connecting seat is clamped in clamping groove;
[0018] Figure 5 It is Figure 4 The enlarged view of A in the middle;
[0019] Figure 6 It is the sectional view of valve core.
[0020] In the drawing: 1, bottle body;2, bottle cap;3, negative pressure release valve;31, valve seat;311, through -hole;32, bonnet;41, core column;411, sealing section;42, core seat;5, sealing groove;51, sealing piece;6, sealing ring;7, elastic part;8, connecting seat;9, extension;10, clamping groove. DETAILED DESCRIPTION
[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and all other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative labor fall within the scope of the present application. Embodiments
[0022] As shown in Figure 1 , Figure 2 and Figure 4 , the disposable thoracic drainage system comprises an open bottle body 1, a bottle cap 2 corresponding to the open shape and a drainage tube, the bottle body 1 and the bottle cap 2 are respectively manufactured by injection molding process, a continuous and closed welding line consistent with the shape of the upper edge of the bottle body 1 is arranged on the bottle cap 2; the bottle cap 2 is welded on the upper edge of the bottle body 1 by ultrasonic welding process, after welding, the bottle cap 2 is sealed and covers the top of the opening, a negative pressure release valve 3 is arranged on the bottle cap 2 to ensure that a certain negative pressure can be maintained during the drainage process to promote the discharge of liquid and gas, the negative pressure release valve 3 is allowed to open when a certain negative pressure level is reached to prevent high negative pressure injury to the patient, and then reseals to maintain negative pressure, the negative pressure release valve 3 comprises a valve seat 31 integrally formed with the bottle cap 2 and a valve core arranged in the valve seat 31, a circular through hole 311 is formed in the center of the valve seat 31, the valve core passes through the through hole 311 to the outside of the bottle body 1, a sealing assembly is bonded to the end of the valve core inside the bottle body 1 close to the through hole 311, when the negative pressure in the bottle body 1 is too high, the negative pressure release valve 3 is opened, the air outside the bottle body 1 will automatically enter the bottle body 1, thereby rapidly releasing the negative pressure in the bottle body 1, when the pressure in the bottle body 1 is normal, the negative pressure release valve 3 is closed, the sealing assembly simultaneously seals the inner side wall of the valve seat 31 and the inner side wall of the through hole 311 when the negative pressure release valve 3 is in the closed state, thereby ensuring the sealing performance of the drainage system.
[0023] As shown in Figures 2-5As shown, the valve core includes a cylindrical core column 41 and a circular core seat 42 integrally formed with the core column 41, the core seat 42 is located at one end of the core column 41 close to the sealing assembly, the inner side wall of the through hole 311 is provided with a rectangular sealing groove 5, the sealing assembly includes a rubber sealing element 51 bonded in the sealing groove 5, the volume of the sealing element 51 is greater than the volume of the sealing groove 5, which ensures a tight fit and enhances the sealing effect, the core column 41 is provided with a sealing section 411, the diameter of the sealing section 411 is greater than the inner diameter of the sealing element 51, and the diameter of the core column 41 is smaller than the inner diameter of the sealing element 51, which provides continuous sealing for the position of the valve seat 31 and the inner side wall of the through hole 311 in the closed state of the negative pressure release valve 3, reduces the risk of liquid or gas leakage, and the relationship between the core column 41 and the inner diameter of the sealing element 51 ensures stable sealing while allowing flexible opening and closing of the valve when the pressure changes, the sealing assembly further includes a trapezoidal sealing ring 6 bonded to the outer peripheral wall of the core seat 42, and the lower edge of the core seat 42 located in the bottle body 1 is provided with a chamfer, and the sealing ring 6 cooperates with the chamfer to provide additional stability for sealing.
[0024] As Figures 2-6 shown, the end of the core seat 42 away from the core column 41 is bonded with an elastic element 7, the elastic element 7 is a spring made of non-metallic material, the end of the elastic element 7 away from the core seat 42 is bonded with a plate-shaped connecting seat 8, the valve seat 31 is integrally formed with a hollow cylindrical extension 9 on one side end face extending into the bottle body 1, the end of the extension 9 away from the valve seat 31 is provided with an L-shaped clamping groove 10, and the two end portions of the connecting seat 8 are correspondingly clamped in the clamping groove 10, the cooperation of the extension 9 and the clamping groove 10 provides physical locking for the connecting seat 8, ensuring the stability and reliability of the negative pressure release valve 3 during opening and closing, preventing the valve from being accidentally opened or closed due to external force, and increasing the overall safety of the drainage system.
[0025] Working principle: as Figures 1-6When the drainage system starts to work, the effusion or gas in the chest cavity is introduced into the bottle 1 through the drainage tube to form a negative pressure environment, the negative pressure in the drainage system helps to promote the continuous discharge of liquid and gas, the valve cap 32 is opened, and the negative pressure release valve 3 is closed at this stage, the sealing assembly exerts a radial force on the inner wall of the valve seat 31 and the inner wall of the through hole 311, keeps the drainage system closed, prevents external air from entering, when the negative pressure in the bottle 1 reaches the preset upper limit value, the negative pressure makes the elastic member 7 compressed, drives the core column 41 to move in the direction of the inside of the bottle 1, weakens the contact force between the sealing assembly and the valve seat 31, and then opens the negative pressure release valve 3, after the valve is opened, the excess negative pressure is released, the pressure in the bottle 1 is reduced, in this process, the elasticity and shape design of the sealing member 51 and the sealing ring 6 ensure the timeliness of pressure release and the resealing ability of the system, after the pressure is reduced to a safe range, the elastic member 7 pushes the core seat 42 and the core column 41 to reset, the valve core reseals the through hole 311, and the negative pressure release valve 3 is closed, at this time, the sealing assembly again exerts a radial force to ensure the airtightness of the drainage system, the pressure in the bottle 1 is adjusted through the design of the sealing structure, which ensures the drainage effect and improves the sealing performance and safety of the drainage system.
[0026] The preferred embodiments of the utility model are described above, the protection scope of the utility model is not limited to the above-mentioned embodiments only, any technical scheme under the idea of the utility model belongs to the protection scope of the utility model. It should be noted that for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the utility model can also be considered as the protection scope of the utility model.
Claims
1. A disposable chest drainage system, comprising a bottle body (1), a bottle cap (2) fixedly connected to the bottle body (1), wherein the bottle cap (2) is provided with a negative pressure release valve (3), characterized in that: The negative pressure release valve (3) comprises a valve seat (31) fixedly connected to the bottle cap (2) and a valve core arranged in the valve seat (31); a through hole (311) is provided at the center of the valve seat (31); the valve core passes through the bottle body (1) through the through hole (311); a sealing component is fixedly connected to a position of one end of the valve core located inside the bottle body (1) near the through hole (311); when the negative pressure release valve (3) is in a closed state, the sealing component applies a radial force to the inner side wall of the valve seat (31) and the inner side wall of the through hole (311).
2. The disposable chest drainage system according to claim 1, characterized in that: The valve core comprises a core column (41) and a core seat (42) fixedly connected to one end of the core column (41) close to the sealing assembly. A sealing groove (5) is provided on the inner side wall of the through hole (311). The sealing assembly comprises a sealing member (51) fixedly connected in the sealing groove (5). The volume of the sealing member (51) is greater than the volume of the sealing groove (5).
3. The disposable chest drainage system according to claim 2, characterized in that: The core column (41) is provided with a sealing section (411), the diameter of the sealing section (411) is larger than the inner diameter of the sealing member (51), and the diameter of the core column (41) is smaller than the inner diameter of the sealing member (51).
4. The disposable chest drainage system according to claim 3, characterized in that: The sealing assembly further comprises a sealing ring (6), and the sealing ring (6) is fixedly connected to the outer peripheral wall of the core seat (42).
5. The disposable chest drainage system according to claim 4, characterized in that: The cross section of the sealing ring (6) is arranged to be trapezoidal, and the lower edge of the core seat (42) located inside the bottle body (1) is provided with a chamfer.
6. The disposable chest drainage system according to claim 3, characterized in that: One end of the core seat (42) away from the core column (41) is fixedly connected to an elastic member (7), and one end of the elastic member (7) away from the core seat (42) is fixedly connected to a connecting seat (8).
7. The disposable chest drainage system according to claim 6, characterized in that: An extension section (9) is fixedly connected to the end face of the valve seat (31) extending into the bottle body (1); a clamping groove (10) is provided at one end of the extension section (9) away from the valve seat (31); and both end portions of the connecting seat (8) are correspondingly clamped in the clamping grooves (10).
8. The disposable chest drainage system according to claim 7, characterized in that: The negative pressure relief valve (3) further comprises a valve cap (32) which is arranged above the stem (41).