Check valve for negative pressure drainage device
By designing a check valve for the negative pressure drainage device, the problem of hemostatic forceps easily falling off when patients move after closed thoracic drainage is solved, achieving the effect of preventing gas from entering the thoracic cavity during examination and ensuring the safety and patency of the drainage device.
Patent Information
- Application Number
- CN202422606972.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-10-28
AI Technical Summary
In existing technologies, hemostatic forceps are prone to dislodgement when patients move after closed thoracic drainage, causing air to enter the thoracic cavity and worsening the condition. There is a lack of effective temporary clamping devices.
Design a check valve for a negative pressure drainage device, including a check valve, a first guide tube, and a second guide tube. By rotating the valve core, its fourth through hole is aligned with the guide tube of the drainage device, temporarily closing the guide tube to prevent gas from entering the pleural cavity. After rotation, drainage is restored.
During patient examinations, prevent air from entering the pleural cavity to avoid worsening the condition. Ensure that drainage devices can be temporarily closed and reopened when necessary to improve patient safety.
Smart Images
Figure CN223615172U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically a check valve for use in a negative pressure drainage device. Background Technology
[0002] Closed thoracic drainage is a common surgical procedure used to treat conditions such as pleural effusion, pneumothorax, and hemothorax. The procedure involves making a small incision in the chest wall, inserting a catheter, and draining fluid or gas from the pleural cavity to the outside of the body, thereby relieving the patient's symptoms and promoting lung re-expansion.
[0003] Post-operatively, if the patient needs to move while lying flat for examinations, the drainage tube needs to be temporarily clamped to prevent air from entering the chest cavity and worsening the condition. Once the examination is completed and the patient is upright, the drainage tube can be reopened, and the patient should be instructed to cough appropriately to ensure the tube remains patent. Currently, hemostatic forceps are commonly used to temporarily clamp the drainage tube; however, during patient movement, the forceps may accidentally dislodge, allowing air to enter the chest cavity and worsening the condition. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a check valve for use in negative pressure drainage devices.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a stop valve for a negative pressure drainage device, comprising a stop valve, a first guide tube, and a second guide tube, wherein the first guide tube is connected to the left side of the stop valve; one end of the second guide tube is connected to the right side of the stop valve, and the other end is connected to the negative pressure drainage device; the stop valve comprises a valve tube and a valve core; the valve tube is hollow at both ends, and has two identical first through holes perpendicularly positioned in the middle of the tube body; the valve core is a cylinder that is wide at both ends and narrow in the middle, hollow inside, and has a partition in the middle position; a second through hole and a third through hole are arranged opposite each other above the partition; a fourth through hole is arranged below the partition, perpendicular to the position of the second through hole; the diameters of the first through hole, the second through hole, the third through hole, and the fourth through hole are the same as the inner diameter of the valve tube; the bottom of the valve core is hollow.
[0006] Preferably, the diameter of the valve core's intermediate column is the same as the diameter of the first through hole.
[0007] Preferably, the inner ring of the first through hole of the valve tube is provided with an internal thread that matches the external thread on the outside of the valve core.
[0008] Preferably, the length of the middle portion of the valve core is greater than twice the outer diameter of the valve tube.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0010] This invention uses a rotating valve core to align the fourth through hole of the valve core with the guide tube at one end of the drainage device. The bottom of the valve core is hollow, and at this time the stop valve is in the lower right unobstructed state, allowing the drainage device to continue operating. The guide tube is temporarily closed, preventing air from entering the pleural cavity and worsening the patient's condition when the patient is examined after closed thoracic drainage. Attached Figure Description
[0011] Figure 1 This is a disassembly diagram of the first embodiment of the present invention.
[0012] Figure 2 This is a front view of the valve core according to the first embodiment of this utility model.
[0013] Figure 3 This is a right view of the valve core according to the first embodiment of this utility model.
[0014] Figure 4 This is a bottom view of the valve core according to the first embodiment of this utility model.
[0015] Labeling explanation: 1000—Check valve; 300—First guide tube; 400—Second guide tube; 100—Valve tube; 200—Valve core; 101—First through hole; 102—Internal thread; 201—External thread; 202—Second through hole; 203—Third through hole; 204—Isolation; 205—Fourth through hole. Detailed Implementation
[0016] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
[0017] Please refer to the reference. Figure 1 , Figure 2 , Figure 3 as well as Figure 4This utility model provides a check valve for a negative pressure drainage device, including a check valve 1000, a first guide tube 300, and a second guide tube 400. The first guide tube 300 is connected to the left side of the check valve 1000; one end of the second guide tube 400 is connected to the right side of the check valve 1000, and the other end is connected to the negative pressure drainage device; the check valve 1000 includes a valve tube 100 and a valve core 200; the valve tube 100 is hollow at both ends, and has two identical first passages perpendicularly opposite each other in the middle of the tube body. Hole 101; The valve core 200 is a cylinder that is wide at both ends and narrow in the middle, hollow inside, with a partition 204 in the middle position; A second through hole 202 and a third through hole 203 are arranged opposite each other above the partition 204; A fourth through hole 205 is arranged below the partition 204, perpendicular to the position of the second through hole 203; The diameters of the first through hole 101, the second through hole 202, the third through hole 203 and the fourth through hole 204 are the same as the inner diameter of the valve tube 100; The bottom of the valve core 200 is hollow.
[0018] Preferably, the diameter of the intermediate column of the valve core 200 is the same as the diameter of the first through hole 101.
[0019] Preferably, the inner ring of the first through hole 101 of the valve tube 100 is provided with an internal thread 102, which matches the external thread 201 of the valve core 200.
[0020] Preferably, the length of the middle portion of the valve core 200 is greater than twice the outer diameter of the valve tube 100.
[0021] After closed thoracic drainage, the patient needs to rest in bed. If an examination is required, first rotate the valve core 200 of the check valve 1000 so that its fourth through hole 205 corresponds to the second guide tube 400. Since the bottom of the valve core 200 is hollow and has an internal partition 204, only the lower right side of the second guide tube 400 is open at this time, while the first guide tube 300 connected to the patient is temporarily closed to prevent air from entering the patient's thoracic cavity and to prevent the condition from worsening. After the patient stands up, rotate the valve core 200 so that its second through hole 202 corresponds to the first guide tube 300 and its third through hole 203 corresponds to the second guide tube 400, and the internal partition 204 is also installed. At this time, the check valve 1000 is in a flow state, and the drainage device continues to provide negative pressure drainage for the patient.
[0022] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A check valve for a negative pressure drainage device, comprising a check valve (1000), a first guide tube (300), and a second guide tube (400), wherein the first guide tube (300) is connected to the left side of the check valve (1000); one end of the second guide tube (400) is connected to the right side of the check valve (1000), and the other end is connected to the negative pressure drainage device, characterized in that: The stop valve (1000) includes a valve tube (100) and a valve core (200); the valve tube (100) is hollow at both ends, and has two identical first through holes (101) at a vertical position in the middle of the tube; the valve core (200) is a cylinder that is wide at both ends and narrow in the middle, and is hollow inside, with a partition (204) in the middle position; a second through hole (202) and a third through hole (203) are arranged opposite each other above the partition (204); a fourth through hole (205) is arranged below the partition (204), which is perpendicular to the position of the second through hole (203); the diameters of the first through hole (101), the second through hole (202), the third through hole (203) and the fourth through hole (204) are the same as the inner diameter of the valve tube (100); the bottom of the valve core (200) is hollow.
2. A check valve for a negative pressure drainage device as described in claim 1, characterized in that: The diameter of the central column of the valve core (200) is the same as the diameter of the first through hole (101).
3. A check valve for a negative pressure drainage device as described in claim 1, characterized in that: The inner ring of the first through hole (101) of the valve tube (100) is provided with an internal thread (102), which matches the external thread (201) on the outside of the valve core (200).
4. A check valve for a negative pressure drainage device as described in claim 1, characterized in that: The length of the middle part of the valve core (200) is greater than twice the outer diameter of the valve tube (100).