Leakage-proof valved pipeline

Abstract

One end of an artificial blood vessel is in suturing connection with a suturing edge at a first suturing position close to the outer edge of the suturing edge, so that a second suturing position is reserved on the suturing edge at the inner side of the first suturing position, the implantation suture can penetrate through the implantation suture section and enter the artificial blood vessel, and the implantation suture position, on the implantation suture section, of the implantation suture is located on the inner side of the first suture position. The artificial blood vessel is connected between the outer edge of the suturing edge and the suturing edge, and the implantation suturing interval for the implantation suturing operation of the implantation suturing line is reserved on the suturing edge and located on the inner side of the first suturing position, so that the implantation suturing position can be blocked through the cooperation between the artificial blood vessel and the implantation suturing line during the implantation suturing operation; therefore, the leakage risk caused by multiple times of suture of the valved pipeline can be avoided.

Description

Technical Field

[0001] This invention belongs to the field of medical product technology, specifically relating to a valved conduit that can prevent leakage. Background Technology

[0002] A valved conduit consists of an artificial blood vessel and an artificial valve, used to replace diseased aortic valves and ascending aorta. Typically, a valved conduit is prepared by suturing the artificial valve's suture edges to one end of the artificial blood vessel. During implantation, the suture edges are sutured to the surrounding tissue at the implantation site. The quality of the sutures used in the preparation and implantation of the valved conduit directly affects its sealing performance during use. Summary of the Invention

[0003] The purpose of this invention is to provide a valved pipe that can prevent leakage, thereby solving the problem of the sealing performance of valved pipes.

[0004] This invention is achieved through the following technical solution:

[0005] A valved conduit capable of preventing leakage, including an artificial blood vessel and an artificial valve, wherein one end of the artificial blood vessel is sutured to the suture edge at a first suture position located near the outer edge of the suture edge, such that an implantation suture interval is reserved on the suture edge inside the first suture position, allowing the implantation suture to pass through and enter the interior of the artificial blood vessel when the valved conduit is sutured to the human tissue using implantation sutures, and the implantation suture position of the implantation suture in the implantation suture interval is located inside the first suture position.

[0006] In some embodiments of the present invention, the artificial blood vessel and the implantation suture position are configured such that when the implantation suture passes through the artificial blood vessel near the suture edge, and after the implantation suture is knotted and connected, the force exerted by the implantation suture on the artificial blood vessel can press the part of the artificial blood vessel connected to the implantation suture onto the implantation suture area, thereby sealing the implantation suture position.

[0007] In some embodiments of the present invention, the artificial blood vessel is sutured to the suture edge at the outer edge of the suture edge.

[0008] In some embodiments of the present invention, the diameter of the artificial blood vessel matches the diameter of the outer edge of the suture.

[0009] In some embodiments of the present invention, the artificial blood vessel is a corrugated tube structure.

[0010] In some embodiments of the present invention, the diameter at the crest of the artificial blood vessel matches the diameter at the outer edge of the suture.

[0011] In some embodiments of the present invention, a folded structure is formed at the end of the artificial blood vessel using crests and troughs, and the artificial blood vessel is sutured to the suture edge at the end through the folded structure.

[0012] In some embodiments of the present invention, the artificial valve is a leaflet treated with a dry method.

[0013] In some embodiments of the present invention, an isolation tube is provided inside the artificial blood vessel to isolate the artificial blood vessel from the leaflets of the artificial valve.

[0014] In some embodiments of the present invention, the isolation tube is inserted at the location of the suture edge, such that its end is located within the implantation suture area.

[0015] In some embodiments of the present invention, one end of the isolation tube extends outside the artificial blood vessel, and a tube cap is fitted onto the end of the isolation tube extending outside the artificial blood vessel. The tube cap is provided with a through hole for the valve holder handle to pass through.

[0016] In some embodiments of the present invention, a vent hole is provided at the end of the cap that mates with the isolation tube.

[0017] In some embodiments of the present invention, a valve holder connected to the artificial valve is also included. The valve holder is connected to the artificial valve via a valve holder binding wire, and the valve holder binding wire can be disconnected from the artificial valve by a single cut.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] This invention connects the artificial blood vessel to the suture edge at the outer edge of the suture edge, and reserves an implantation suture area on the suture edge inside the first suture position for the implantation suture operation. This allows the artificial blood vessel and the implantation suture to work together to seal the implantation suture position during the implantation suture operation, thereby solving the leakage risk caused by multiple sutures of valved conduits and effectively preventing leakage.

[0020] By placing an isolation tube between the artificial blood vessel and the artificial valve, the artificial blood vessel and the artificial valve can be effectively isolated, preventing the dry fluid on the artificial valve from transferring to the inner wall of the artificial blood vessel. Moreover, the structure used is simple and easy to implement. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a valved pipe structure according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the valved pipe from another perspective, according to an embodiment of the present invention.

[0024] Figure 3 This is a cross-sectional view of the internal structure of the valved pipe according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the valved conduit implanted and sutured according to an embodiment of the present invention.

[0026] Figure 5 for Figure 4 A partial schematic diagram of the implantation suture site.

[0027] Figure 6 This is a cross-sectional view of the internal structure of the valved conduit in the implantation state according to an embodiment of the present invention.

[0028] Figure 7 for Figure 6 A partial schematic diagram of the implantation suture site.

[0029] Figure 8 The main view of the structure of the valved pipe product with isolation tube provided in an embodiment of the present invention.

[0030] Figure 9 for Figure 8 Cross-sectional view of the product structure of the pipe with a central flap.

[0031] Figure 10 This is a schematic diagram of the isolation tube structure in an embodiment of the present invention.

[0032] Figure 11 This is a schematic diagram of the cap structure in an embodiment of the present invention.

[0033] Figure 12 This is a top view of the cap structure in an embodiment of the present invention.

[0034] in:

[0035] 10. Valved conduit; 11. Artificial blood vessel; 12. Artificial valve; 121. Leaflet; 122. Suture edge; 123. Product suture; 124. Implanted suture; 125. Implanted suture knot.

[0036] 20. Human tissues;

[0037] 30. Valve holder; 301. Handle;

[0038] 41. Isolation tube; 42. Tube cap; 421. Through hole; 422. Vent hole; 43. Clamp; 44. Absorbent cloth. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0040] Referring to patent document CN117771017A, in this valved conduit, an artificial valve is inserted into the artificial blood vessel from its end. The end of the artificial blood vessel is sutured to the suture edge of the artificial valve at its root and the suture edge, thus preparing the valved conduit product. During implantation, the valved conduit is delivered to the implantation site using a valve holder, and the surgeon sutures the human tissue to the suture edge, completing the implantation of the valved conduit.

[0041] With this type of valved conduit and its implantation method, the suture edges of the artificial blood vessel and the artificial valve need to be sutured together. When the valved conduit is implanted, the suture edges need to be sutured together with the human tissue. The quality of these two suture connections will affect the sealing performance of the valved conduit during use, increasing the risk of leakage during use.

[0042] This invention improves the valved conduit structure, making it suitable for specific implantation and suturing methods during implantation and suturing operations, thereby reducing the risk of leakage from the valved conduit.

[0043] For ease of description, the suture connecting the artificial blood vessel to the suture edge will be referred to as product suture 123, such as... Figure 3 As shown; the suture used in the suture procedure for implanting a valved tube is referred to as implant suture 124, as shown. Figure 4 and Figure 5 As shown.

[0044] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments of the present invention, the valved conduit includes an artificial blood vessel 11 and an artificial valve 12. One end of the artificial blood vessel 11 is sutured to the suture edge 122 of the artificial valve, and the artificial blood vessel and the suture edge are sutured to each other at a first suture position near the outer edge of the suture edge. This allows the suture edge to have an implantation suture interval inside the first suture position, which allows the implantation suture to pass through and enter the artificial blood vessel when the valved conduit is sutured to the human tissue using an implantation suture. The implantation suture position of the implantation suture in the implantation suture interval is located inside the first suture position.

[0045] like Figure 3As shown, the implantation suture zone is the area on the suture edge between the first suture position and the root of the suture edge, where the root of the suture edge is the location where the suture edge and the valve seat of the artificial valve meet.

[0046] The artificial blood vessel and the implantation suture position are designed so that when the implantation suture passes through the artificial blood vessel near the suture edge, and after the implantation suture is knotted and connected, the force applied by the implantation suture to the artificial blood vessel can press the part of the artificial blood vessel connected to the implantation suture onto the implantation suture area, thereby sealing the implantation suture position.

[0047] Specifically, refer to Figure 4 and Figure 5 The implantation and suturing of the valved conduit can be performed using double-needle sutures. Multiple sets of double-needle sutures are inserted at both ends to the implantation site on the human tissue, with intervals between each set. Then, the sutures at both ends of the double-needle sutures pass sequentially through the suture edge 122 and the artificial blood vessel 11 at the implantation site of the valved conduit, exiting from the artificial blood vessel. The connection between each set of double-needle sutures and the valved conduit is then performed sequentially. The valved conduit is then advanced to the implantation site on the human tissue using a valve holder. Finally, the two strands of each set of double-needle sutures are pulled tight and knotted together outside the artificial blood vessel, forming a... Figure 5 The implanted suture knot 125 shown completes the implantation and suturing connection of the valved conduit.

[0048] By knotting the implanted sutures together, the two sutures tighten each other. Under the tightening force, the artificial blood vessel located between the implanted suture and the suture edge is squeezed and moved towards the suture edge, pressing this part of the artificial blood vessel onto the suture edge. Under the squeezing action, this part of the artificial blood vessel is squeezed to form a folded structure and pressed tightly at the implantation suture position, which can provide an effective sealing effect at the implantation suture position, thereby achieving the effect of preventing leakage.

[0049] Compared to the structure in CN117771017A, this invention connects the artificial blood vessel to the suture edge near the outer edge of the suture edge. Since the suture edge has a flange structure, there is a certain space from the outer edge of the suture edge to the root of the suture edge. Because the artificial blood vessel is sutured to the outer edge of the suture edge, a certain implantation suture interval is reserved between the first suture position and the root of the suture edge for the implantation suture operation. This allows the implantation suture to use this implantation suture interval to suture the valved conduit to the human tissue during the implantation suture operation. Combined with the above-mentioned implantation suture method, the artificial blood vessel at the implantation suture connection site is used to seal the implantation suture position during implantation suture, which reduces the risk of leakage of the valved conduit while ensuring the quality of implantation suture.

[0050] In some embodiments, the artificial blood vessel 11 is sutured to the suture edge 122 at the outer edge of the suture edge. In this case, the diameter of the artificial blood vessel matches the outer diameter of the suture edge, as shown in the figure. Figure 3 As shown, taking the suture connection of an artificial blood vessel at the outer edge of the suture as an example, after the suture connection, the outer diameter of the artificial blood vessel is basically flush with the outer edge of the suture.

[0051] In some embodiments, the artificial blood vessel 11 is a corrugated tube.

[0052] When a corrugated tube is used for the artificial blood vessel, the diameter of the crest of the artificial blood vessel 11 matches the outer diameter of the suture edge 122.

[0053] like Figure 3 When suturing the artificial blood vessel to the suture edge, a folded structure is formed at the end of the artificial blood vessel using crests and troughs. This folded structure is then sutured to the suture edge to ensure structural strength and sealing performance at the connection point. Simultaneously, this folded structure allows the rough edges of the artificial blood vessel to be concealed within the vessel, ensuring the quality of the valved conduit product during implantation.

[0054] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 During the implantation procedure, the suture needle is inserted into the artificial blood vessel at a position 2 or 3 creases away from the suture edge, and the suture is then used to press the artificial blood vessel located between this position and the suture edge onto the suture edge.

[0055] like Figure 1 Typically, the valved conduit is connected to the valve holder 30 to form a valved conduit product, which facilitates the implantation of the valved conduit.

[0056] In some embodiments, the artificial valve 12 employs a dry-processed leaflet 121.

[0057] When artificial valve leaflets are treated with a dry process, the leaflets are coated with a dry process solution. This dry process solution can easily transfer to the inner wall of the artificial blood vessel upon contact with the valve conduit, which can damage the artificial blood vessel. Therefore, it is necessary to isolate the artificial valve leaflets from the artificial blood vessel in the valve conduit product.

[0058] In some embodiments, refer to Figure 8 and Figure 9 An isolation tube 41 is installed inside the artificial blood vessel to isolate the leaflets of the artificial valve from the artificial blood vessel.

[0059] Reference Figure 9 and Figure 10The isolation tube 41 matches the inner diameter of the artificial blood vessel 11. Combined with the suture connection structure between the artificial blood vessel and the suture edge, the isolation tube can be inserted into the suture edge. At this time, the leaflet of the artificial valve is located inside the isolation tube, and the artificial blood vessel is located outside the isolation tube, thus achieving complete isolation between the artificial blood vessel and the leaflet of the artificial valve.

[0060] Reference Figure 8 , Figure 9 , Figure 11 and Figure 12 One end of the isolation tube 41 extends outside the artificial blood vessel. A tube cap 42 is fitted onto this end of the isolation tube. The tube cap 42 is provided with a through hole 421 that mates with the valve holder handle 301. The through hole 421 can be configured to mate with the valve holder handle. Through the connection between the tube cap, the isolation tube, and the valve holder handle, the isolation tube and the valve holder are integrated into a whole, giving the entire valved tubing product better stability.

[0061] A vent hole 422 is provided at the end where the cap mates with the isolation tube. This vent hole 422 is used to allow the sterilization gas inside the isolation tube to be discharged in a timely manner after the valved pipe product has been sterilized with ethylene oxide.

[0062] A detachable clip 43 is provided on the valve holder handle 301. The clip has an elastic structure and is locked into the annular groove on the handle 301, so that the clip 43 is fixedly connected to the valve holder handle. The clip 43 and one end of the tube cap 42 form a limiting engagement to limit the axial displacement of the tube cap.

[0063] An absorbent cloth 44 is provided between the cap 42 and the end of the isolation tube 41 to seal the end of the isolation tube, thereby providing further effective protection for the internal artificial valve.

[0064] During the implantation procedure, the clamps, caps, and isolation tubes are removed in sequence, and the valved conduit is implanted using a valve holder.

[0065] Reference Figure 11 The valve holder 30 is connected to the artificial valve 12 via a valve holder suture, and the suture can be cut off to disconnect the valve holder from the artificial valve. After the implantation of the valved conduit, the valve holder suture is cut off to separate the valve holder from the valved conduit, ensuring the safety and convenience of the implantation procedure.

[0066] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this invention is usually placed in during use. They are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0067] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this invention does not imply that the components are required to be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0068] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A valved pipe capable of preventing leakage, characterized in that, The invention includes an artificial blood vessel and an artificial valve. One end of the artificial blood vessel is sutured to the suture edge at a first suture position located near the outer edge of the suture edge. This suture edge has an implantation suture zone on the inner side of the first suture position, which allows the implantation suture to pass through and enter the interior of the artificial blood vessel when the valved conduit is sutured to the human tissue using implantation sutures. The implantation suture position of the implantation suture in the implantation suture zone is located inside the first suture position.

2. The leak-proof valve pipe according to claim 1, characterized in that, The artificial blood vessel and the implantation suture position are configured such that when the implantation suture passes through the artificial blood vessel near the suture edge, and after the implantation suture is knotted and connected, the force applied by the implantation suture to the artificial blood vessel can press the part of the artificial blood vessel connected to the implantation suture onto the implantation suture area, thereby sealing the implantation suture position.

3. The leak-proof valve pipe according to claim 1, characterized in that, The artificial blood vessel is sutured to the suture edge at the outer edge of the suture edge.

4. The leak-proof valve pipe according to claim 3, characterized in that, The diameter of the artificial blood vessel matches the diameter of the outer edge of the suture.

5. The leak-proof valve pipe according to claim 1, characterized in that, The artificial blood vessel has a corrugated tube structure.

6. The leak-proof valve pipe according to claim 5, characterized in that, The diameter at the crest of the artificial blood vessel matches the diameter of the outer edge of the suture.

7. The leak-proof valve pipe according to claim 5, characterized in that, A folded structure is formed at the end of the artificial blood vessel using crests and troughs, and the artificial blood vessel is sutured to the suture edge at the end through the folded structure.

8. The leak-proof valve pipe according to claim 1, characterized in that, The artificial valve uses leaflets that have been processed using a dry method.

9. The leak-proof valve pipe according to claim 7, characterized in that, An isolation tube is installed inside the artificial blood vessel to isolate the artificial blood vessel from the leaflets of the artificial valve.

10. The leak-proof valve pipe according to claim 7, characterized in that, The isolation tube is inserted at the location of the suture edge, with its end positioned within the implantation suture area.

11. The leak-proof valve pipe according to claim 9, characterized in that, One end of the isolation tube extends outside the artificial blood vessel, and a tube cap is fitted on the end of the isolation tube that extends outside the artificial blood vessel. The tube cap is provided with a through hole for the valve holder handle to pass through.

12. The leak-proof valve pipe according to claim 11, characterized in that, The end of the cap that mates with the isolation tube is provided with a vent hole.

13. The leak-proof valve pipe according to claim 1, characterized in that, It also includes a valve holder connected to the artificial valve, the valve holder being connected to the artificial valve via a valve holder binding wire, and the valve holder binding wire being able to be disconnected from the artificial valve by a single cut.

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