Check valve assembly for sealing conduit
By designing an anti-reverse valve assembly, and utilizing the cooperation of the lower cover, upper cover, and one-way valve core, the problem of fluid drainage during catheter placement surgery was solved, thus achieving a cleaner surgical environment and improved surgical quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-04-10
AI Technical Summary
During catheter placement surgery, the patient's bodily fluids can easily leak out along the catheter port, affecting the surgical procedure and environment, and hindering the improvement of surgical quality.
Design an anti-backflow valve assembly, including a lower cover, an upper cover, and a one-way valve core. Through the cooperation of the through groove and the connecting port, the one-way valve core seals the conduit port to prevent body fluid from flowing out.
Effectively sealing the catheter port provides a good surgical environment and improves surgical quality.
Smart Images
Figure CN224099814U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical devices, in particular to a reverse prevention valve assembly for closing a catheter. BACKGROUND
[0002] In a catheterization operation, a puncture needle is usually used to introduce a guide wire and a catheter into a blood vessel. After the guide wire is inserted into the patient's blood vessel, the catheter is sleeved on the guide wire so that the catheter moves along the guide wire and is inserted into the patient's blood vessel. The end of the catheter located outside the human body has a port. During the process of inserting the catheter into the blood vessel, the patient's body fluid is easily discharged along the catheter through the port, which affects the operation of medical personnel, pollutes the environment, and is not conducive to improving the operation quality. CONTENT OF THE UTILITY MODEL
[0003] In order to solve one of the above technical defects, a reverse prevention valve assembly for closing a catheter is provided in the embodiments of the present application.
[0004] The utility model discloses the following technical scheme:
[0005] A reverse prevention valve assembly for closing a catheter comprises:
[0006] A lower cover having a through groove, the lower cover having a catheter connecting portion;
[0007] An upper cover sleeved on the lower cover, the upper cover having a communication port communicating with the through groove;
[0008] A one-way valve core arranged inside the upper cover, the upper cover and the lower cover cooperating to fix the one-way valve core, and the one-way valve core cutting off fluid movement in the direction from the through groove to the communication port.
[0009] Optionally, the lower cover has a matching pipe connected to the catheter connecting portion.
[0010] The catheter connecting portion comprises an inner pipe body and an outer sleeve body, the inner pipe body and the outer sleeve body are connected, and an annular cavity for connecting a catheter is formed between the inner pipe body and the outer sleeve body.
[0011] The through groove passes through the inner pipe body and the matching pipe.
[0012] The matching pipe and the upper cover clamp and fix the one-way valve core.
[0013] Optionally, the inner wall of the outer sleeve body has an internal thread.
[0014] Optionally, the one-way valve core has a sleeve ring and an inner convex portion located inside the sleeve ring and connected to the sleeve ring.
[0015] The sleeve is sleeved on the pipe opening of the matching pipe, and the matching pipe and the upper cover clamp and fix the sleeve;
[0016] The inner convex part extends to the inner side of the matching pipe.
[0017] The inner convex part has an inner cavity communicating with the communicating opening, and a cutout communicating with the inner cavity is arranged on the side close to the inner pipe body.
[0018] Optionally, the inner convex part has two inclined walls, the two inclined walls are close to each other on the side away from the inner pipe body, and the cutout is between the two inclined walls, the two inclined walls are away from each other on the side close to the inner pipe body, and the two inclined walls are connected by an arc wall.
[0019] Optionally, the through groove includes a fine-diameter groove arranged in the inner pipe body and a coarse-diameter groove arranged in the matching pipe, and the inner convex part extends into the coarse-diameter groove.
[0020] Optionally, the check valve assembly includes a guide-through member, and the guide-through member has a through groove.
[0021] The outer diameter of the guide-through member is smaller than that of the communicating opening.
[0022] In the state that the guide-through member is inserted into the communicating opening, the guide-through member supports the one-way valve core, so that the through groove communicates with the through groove.
[0023] Optionally, the guide-through member has a plug-in end and an external end, and the through groove has a guide groove section on the side close to the plug-in end.
[0024] In the direction from the external end to the plug-in end, the inner diameter of the guide groove section gradually increases.
[0025] Optionally, the outer wall of the guide-through member is provided with a plug-in matching wall on the side close to the plug-in end.
[0026] In the direction from the external end to the plug-in end, the outer diameter of the plug-in matching wall gradually decreases.
[0027] Optionally, the guide-through member has a main body and a pinch part connected to the main body, and the pinch part is arranged on the outer wall of the main body.
[0028] The main body has the through groove.
[0029] By adopting the above technical scheme, the present application has the following beneficial effects:
[0030] The anti-reverse valve assembly provided by the embodiments of the present application can be connected to the end of the catheter, the one-way valve core can be used for the guide wire to pass through, during the process of the catheter being sent into the blood vessel or the body cavity of the patient, the anti-reverse valve assembly seals the port of the catheter, avoids the body fluid from being discharged from the port of the catheter, and can provide a good operation environment for the operator, thereby being beneficial to improving the operation quality. BRIEF DESCRIPTION OF DRAWINGS
[0031] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:
[0032] Figure 1 A state diagram of the anti-reverse valve assembly for sealing the catheter provided by the embodiments of the present application is shown in the figure, which is connected to the catheter;
[0033] Figure 2 An exploded view of the partial structure of the anti-reverse valve assembly for sealing the catheter provided by the embodiments of the present application is shown in the figure;
[0034] Figure 3 A partial structure diagram of the anti-reverse valve assembly for sealing the catheter provided by the embodiments of the present application is shown in the figure;
[0035] Figure 4 A sectional view of the partial structure of the anti-reverse valve assembly for sealing the catheter provided by the embodiments of the present application is shown in the figure;
[0036] Figure 5 A structure schematic diagram of the through member of the anti-reverse valve assembly for sealing the catheter provided by the embodiments of the present application is shown in the figure;
[0037] Figure 6 A state diagram of the through member of the anti-reverse valve assembly for sealing the catheter provided by the embodiments of the present application is shown in the figure, which is used for sealing the one-way valve core;
[0038] Figure 7 A state diagram of the one-way valve core of the anti-reverse valve assembly for sealing the catheter provided by the embodiments of the present application is shown in the figure, which is used for sealing the guide wire.
[0039] In the figure: 100, anti-reverse valve assembly; 1, lower cover; 11, catheter connecting part; 111, inner pipe body; 112, outer sleeve body; 12, matching pipe; 13, through groove, 131, thin-diameter groove; 132, thick-diameter groove; 2, upper cover; 21, communication port; 3, one-way valve core; 31, sleeve ring; 32, inner protruding part; 321, inclined wall; 322, cutout; 4, through member; 41, guide groove section; 42, plug-in matching wall; 43, pinch part; 200, catheter; 300, guide wire. DETAILED DESCRIPTION
[0040] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0041] In the description of this application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0042] In this application and its embodiments, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0043] In this application and its embodiments, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0044] like Figures 1 to 7 As shown, this disclosure provides an anti-backflow valve assembly 100 for sealing a conduit 200, comprising: a lower cover 1, an upper cover 2, and a one-way valve core 3. The lower cover 1 has a through groove 13 and a conduit connection portion 11. The upper cover 2 is sleeved on the lower cover 1 and has a communication port 21 communicating with the through groove 13. The one-way valve core 3 is disposed inside the upper cover 2. The upper cover 2 and the lower cover 1 cooperate to fix the one-way valve core 3, and the one-way valve core 3 blocks fluid movement from the through groove 13 to the communication port 21.
[0045] The lower cover 1 can be connected to the catheter 200 through the catheter connecting part 11, so that the through groove 13 communicates with the catheter 200, the one-way valve core 3 is fixed between the upper cover 2 and the lower cover 1, the one-way valve can close the gap between the upper cover 2 and the lower cover 1, and extend into the through groove 13 to block the through groove 13. The anti-reverse valve assembly 100 provided by the embodiment of the application can be connected to the end of the catheter 200, the one-way valve core 3 can be passed through by the guide wire 300, during the process of the catheter being sent into the blood vessel or body cavity of the patient, the anti-reverse valve assembly 100 closes the port of the catheter 200, avoids the body fluid being discharged from the port of the catheter 200, and can provide a good operation environment for the operator, which is beneficial to improve the operation quality.
[0046] In some possible embodiments, the lower cover 1 has a matching pipe 12 connected to the catheter connecting part 11, the catheter connecting part 11 includes an inner pipe body 111 and an outer sleeve body 112, the inner pipe body 111 and the outer sleeve body 112 are connected, and an annular cavity for connecting the catheter 200 is formed between the inner pipe body 111 and the outer sleeve body 112. The catheter 200 can be sleeved on the inner pipe body 111 and be limited in the annular cavity between the inner pipe body 111 and the outer sleeve body 112, and the catheter 200 and the catheter connecting part 11 have good connection stability and are not easy to be separated. The through groove 13 is arranged through the inner pipe body 111 and the matching pipe 12, the matching pipe 12 and the upper cover 2 clamp and fix the one-way valve core 3. When the upper cover 2 is sleeved on the lower cover 1, the upper cover 2 and the lower cover 1 can be tightly fitted to realize fixed connection therebetween.
[0047] In some possible embodiments, as shown in Figure 2 the inner wall of the outer sleeve body 112 has internal threads. The outer wall of the end of the catheter 200 can be provided with external threads, and the catheter 200 can be threadedly connected to the outer sleeve body 112, and the inner pipe body 111 can be inserted into the catheter 200.
[0048] In some possible embodiments, as shown in Figure 2 and Figure 4 the one-way valve core 3 has a sleeve ring 31 and an inner convex part 32 located inside the sleeve ring 31 and connected to the sleeve ring 31, the sleeve ring 31 is sleeved on the pipe orifice of the matching pipe 12, the matching pipe 12 and the upper cover 2 clamp and fix the sleeve ring 31, the inner convex part 32 extends to the inside of the matching pipe 12, the inner convex part 32 has an inner cavity communicating with the communicating port 21, and a cutout 322 communicating with the inner cavity is formed in the side of the inner convex part 32 close to the inner pipe body 111. The one-way valve core 3 is a flexible member, which can be made of rubber, silica gel or other flexible materials. After the body fluid enters the through groove 13, the body fluid is blocked by the inner convex part 32, and the cutout 322 of the inner convex part 32 is closed under the pressure of the body fluid, so that the body fluid cannot be discharged from the anti-reverse valve assembly 100.
[0049] In some possible embodiments, as shown in Figure 2 The inner convex part 32 has two inclined walls 321 which are close to each other on one side of the inner tube body 111 and have the cutout 322 therebetween, and are far away from each other on the other side of the inner tube body 111 and are connected by an arc wall therebetween.
[0050] Under no external force, the thickness of the inner convex part 32 gradually decreases in the direction from the fitting tube 12 to the inner tube body 111. When the outer convex side of the inner convex part 32 is impacted by the body fluid, the cutout 322 tends to be closed, and the through groove 13 is blocked.
[0051] In some possible embodiments, as shown in Figure 4 The through groove 13 includes a fine-diameter groove 131 arranged in the inner tube body 111 and a coarse-diameter groove 132 arranged in the fitting tube 12, and the inner convex part 32 extends into the coarse-diameter groove 132. By arranging the coarse-diameter groove 132 with a larger space in the fitting tube 12, a space for accommodating the inner convex part 32 can be provided.
[0052] In some possible embodiments, as shown in Figure 5 and Figure 6 The anti-reverse valve assembly 100 includes a guide-through member 4 which has a through groove and has an outer diameter smaller than the communication port 21, and in a state where the guide-through member 4 is inserted into the communication port 21, the guide-through member 4 props open the one-way valve core 3 so that the through groove communicates with the through groove 13.
[0053] As shown in Figure 2 and Figure 7 Under no external force, the cutout 322 of the one-way valve core 3 is in a closed state, and when the guide wire 300 needs to pass through the one-way valve core 3, the guide-through member 4 is inserted into the coarse-diameter groove 132 from the communication port 21, which props open the one-way valve core 3 so that the cutout 322 gap is propped open to form a round opening, facilitating the guide wire 300 to smoothly pass through the one-way valve core 3 and extend out of the through groove 13. Subsequently, the guide-through member 4 is removed, and the one-way valve core 3 is in a closed state and tightly wraps the guide wire 300. When the catheter 200 is sent into the body along the guide wire 300, the body fluid can be prevented from overflowing out of the catheter 200.
[0054] In some possible embodiments, as shown in Figure 6 The guide-through member 4 has a plug-in end and an external end, the through groove has a guide groove segment 41 close to the plug-in end, and in a direction from the external end to the plug-in end, that is, in a plug-in direction of the guide-through member 4, the inner diameter of the guide groove segment 41 gradually increases to form a flared opening, which facilitates the guide wire 300 to smoothly pass through, and the guide groove segment 41 has a guiding effect.
[0055] In some possible implementations, such as Figure 5 As shown, a mating wall 42 is provided on the outer wall of the conductor 4 near the insertion end. The outer diameter of the mating wall 42 gradually decreases in the direction from the outer end to the insertion end. The outer diameter of the mating wall 42 is small and significantly smaller than the diameter of the communication port 21, which allows for easy and smooth insertion into the communication port 21.
[0056] In some possible implementations, the guide 4 has a main body and a gripping portion 43 connected to the main body. The gripping portion 43 is disposed on the outer wall of the main body, which has the through groove. The gripping portion 43 facilitates medical personnel to grip the guide 4 for insertion into the communication port 21. The gripping portion 43 can be disposed on opposite sides of the main body. The gripping portion 43 can be a bent rod, which has a weight-reducing effect.
[0057] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0058] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0059] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A check valve assembly for closing a conduit, characterized by, The utility model relates to a one-way valve, comprising: a lower cover having a through groove, the lower cover having a conduit connecting part; an upper cover sleeved on the lower cover, the upper cover having a communication port communicating with the through groove; a one-way valve core arranged inside the upper cover, the upper cover and the lower cover cooperating to fix the one-way valve core, the one-way valve core stopping fluid movement in the direction from the through groove to the communication port.
2. A check valve assembly for closing a conduit according to claim 1, wherein, The lower cover has a matching pipe connected to the conduit connecting part. The conduit connecting part comprises an inner pipe body and an outer sleeve body, the inner pipe body and the outer sleeve body being connected, an annular cavity for connecting a conduit being formed between the inner pipe body and the outer sleeve body. The through groove passes through the inner pipe body and the matching pipe. The matching pipe and the upper cover clamp and fix the one-way valve core.
3. A check valve assembly for closing a conduit according to claim 2, wherein, The inner wall of the outer sleeve body has internal threads.
4. A check valve assembly for closing a conduit according to claim 2, wherein, The one-way valve core has a sleeve ring and an inner protrusion inside the sleeve ring and connected to the sleeve ring. The sleeve ring is sleeved on the pipe opening of the matching pipe, and the matching pipe and the upper cover clamp and fix the sleeve ring. The inner protrusion extends to the inside of the matching pipe. The inner protrusion has an inner cavity communicating with the communication port, and a cutout communicating with the inner cavity is formed on the side of the inner protrusion close to the inner pipe body.
5. A check valve assembly for closing a conduit according to claim 4, wherein, The inner protrusion has two inclined walls, the two inclined walls close to each other on the side close to the inner pipe body and have the cutout therebetween, and the two inclined walls are away from each other on the side away from the inner pipe body, and the two inclined walls are connected by an arc wall therebetween.
6. A check valve assembly for closing a conduit according to claim 4, wherein, The through groove comprises a small-diameter groove arranged in the inner pipe body and a large-diameter groove arranged in the matching pipe, and the inner protrusion extends into the large-diameter groove.
7. A check valve assembly for closing a conduit according to any of claims 1-6, characterized in that The utility model further comprises a lead-through member having a through groove. The outer diameter of the lead-through member is smaller than the communication port. In the state that the lead-through member is inserted into the communication port, the lead-through member pries the one-way valve core, so that the through groove communicates with the through groove.
8. A check valve assembly for closing a conduit according to claim 7, wherein, The lead-through member has a plug-in end and an external end, and the through groove has a guide groove section on the side close to the plug-in end. In the direction from the external end to the plug-in end, the inner diameter of the guide groove section gradually increases.
9. A check valve assembly for closing a conduit according to claim 8, wherein, The outer wall of the lead-through member is provided with a plug-in matching wall on the end close to the plug-in end. In the direction from the external end to the plug-in end, the outer diameter of the plug-in matching wall gradually decreases.
10. The anti -reverse valve assembly for closing a conduit according to claim 7, wherein, The lead-through member has a main body and a pinch portion connected to the main body, and the pinch portion is arranged on the outer wall of the main body. The main body has the through groove.