Blood vessel connection assembly

Abstract

A blood vessel connection assembly, comprising an artificial blood vessel (1) and a support tube (2), wherein the support tube (2) is sleeved on and connected to the artificial blood vessel (1), and is fixed to the end of the artificial blood vessel (1). The blood vessel connection assembly enables the artificial blood vessel (1) and the support tube (2) to be fixed to each other to form one piece. During an artificial blood vessel surgery, the whole structure can be directly installed, thus reducing the connection operation between the artificial blood vessel (1) and the support tube (2) during surgery, thereby effectively shortening the surgery duration and improving the surgery efficiency.

Description

A vascular connection component

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 13, 2023, with application number 202311511736.0 and invention name “A Vascular Connection Component”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of implantable medical devices, and in particular to a vascular connection assembly. Background Art

[0003] In the prior art, an artificial blood vessel is usually a straight cylindrical structure, and radial support is provided by a support tube. The artificial blood vessel is placed outside the human blood vessel and finally fixed by tying ropes.

[0004] During the surgery, the surgeon first secures the artificial blood vessel to the support tube, then connects the artificial blood vessel to the human blood vessel, secures the artificial blood vessel to the human blood vessel, and secures it with a ligature. This operation is time-consuming. Because surgical time and trauma are directly related, prolonged vascular suturing can prolong cardiac arrest, causing physical injury to the patient and posing a significant safety risk.

[0005] Therefore, during artificial blood vessel surgery, how to shorten the operation time, improve the operation efficiency, and avoid damage to the patient's body due to the long operation time is a technical problem that technical personnel in this field urgently need to solve.

[0006] Summary of the Invention

[0007] The purpose of this application is to provide a vascular connection component that can shorten the operation time, improve the operation efficiency, and avoid damage to the patient's body caused by the long operation during artificial blood vessel surgery.

[0008] In order to solve the above technical problems, the present application provides a blood vessel connection assembly, including an artificial blood vessel and a support tube, wherein the support tube is sleeve-connected to the artificial blood vessel and fixed to the end of the artificial blood vessel.

[0009] Optionally, there are two support tubes, and the two support tubes are respectively fixed to two ends of the artificial blood vessel.

[0010] Optionally, at least two groups of connecting parts are further included, wherein the connecting parts include connecting lines, which pass through the artificial blood vessel and / or the support tube, and both ends of the connecting lines are located outside the artificial blood vessel and the support tube.

[0011] Optionally, the connecting portion further includes a suture needle provided on the connecting line.

[0012] Optionally, the number of the connecting parts is three groups, and the connecting parts are evenly spaced along the circumference of the support tube.

[0013] Optionally, a marking line is further provided on the outer wall of the support tube or the outer wall of the artificial blood vessel.

[0014] Optionally, an annular mounting cavity is provided at the end of the artificial blood vessel, and the annular mounting cavity is used to mount the support tube. At least one side end of the annular mounting cavity is closed to isolate the support tube from blood flowing through the artificial blood vessel.

[0015] Optionally, the artificial blood vessel includes a first tube body and a second tube body sleeved on the outside of the end of the first tube body, the first tube body and the second tube body enclose the annular installation cavity, and the end of the annular installation cavity is closed along the circumferential direction.

[0016] Optionally, both ends of the second tube are located on both sides of a binding position, where the binding position is a position bound with a human blood vessel through a binding rope.

[0017] Optionally, the end of the first tube body is folded outward and extended axially to form the second tube body.

[0018] Optionally, the artificial blood vessel and the support tube are fixed by suturing;

[0019] Alternatively, a plurality of thorn-like protrusions are provided at intervals on the outer wall of the support tube, and the thorn-like protrusions can pass through the second tube body to be fixed to the artificial blood vessel.

[0020] Optionally, a through hole is formed on the side wall of the support tube.

[0021] Optionally, the axis of the support tube is a curve.

[0022] Compared with the prior art, the vascular connection assembly provided by this application has the following beneficial effects:

[0023] The support tube and the end of the artificial blood vessel are fixedly connected. This arrangement can ensure the stability of the vascular connection assembly. During the operation, when the vascular connection assembly is connected to the human blood vessel, there is no need to perform a fixing operation between the artificial blood vessel and the support tube, thereby simplifying the surgical operation, reducing the operation time, improving the surgical efficiency, and reducing safety risks.

[0024] Furthermore, directly fixing the artificial blood vessel and the support tube can ensure that the fixation between the two meets the needs of different individuals, has a wider range of applications, and avoids the impact on patients caused by different fixation methods or degrees between the artificial blood vessel and the support tube during surgery due to different doctors' techniques. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a cross-sectional view of a blood vessel connection assembly provided in an embodiment of the present application;

[0026] FIG2 is a partial enlarged view of FIG1 ;

[0027] FIG3 is a cross-sectional view of the blood vessel connection assembly in a state of being sheathed on a human blood vessel.

[0028] In Figures 1 to 3, the reference numerals are described as follows:

[0029] 1 artificial blood vessel, 11 first tube body, 12 second tube body, 13 annular mounting cavity;

[0030] 2 support tube, 21 through hole, 22 annular protrusion;

[0031] 3 connecting part, 31 connecting thread, 32 suture needle;

[0032] 4 fixed points;

[0033] 5 Human blood vessels. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] The present application provides a vascular connection assembly for connecting a human blood vessel 5. Specifically, as shown in Figures 1 and 2, the vascular connection assembly includes an artificial blood vessel 1 and a support tube 2. The support tube 2 is sleeved and connected to the artificial blood vessel 1 and fixed to the end of the artificial blood vessel 1. The support tube 2 is typically a metal tube (such as a nickel-titanium alloy tube) and can provide radial support for the artificial blood vessel 1.

[0036] As shown in Figure 3, when connecting a human blood vessel 5 using the blood vessel connection assembly, the end of the blood vessel connection assembly is sheathed onto the human blood vessel 5 and then tied and secured at the tying position using a tying rope. The tying position can be radially supported by the support tube 2 to ensure connection stability.

[0037] In the vascular connection assembly provided in this embodiment, the support tube 2 is fixedly connected to the end of the artificial blood vessel 1. This arrangement can ensure the stability of the vascular connection assembly. During surgery, when the vascular connection assembly is connected to the human blood vessel 5, there is no need to perform a fixing operation between the artificial blood vessel 1 and the support tube 2, thereby simplifying the surgical operation, reducing the operation time, improving the surgical efficiency, and reducing safety risks.

[0038] Furthermore, directly fixing the artificial blood vessel 1 and the support tube 2 can ensure that the fixation between the two meets the needs of different individuals, has a wider scope of application, and avoids the impact on patients caused by different fixation methods or degrees between the artificial blood vessel 1 and the support tube 2 during surgery due to different doctors' techniques.

[0039] As shown in Figures 1 and 2, there are two support tubes 2, which are respectively connected and fixed to the two ends of the artificial blood vessel 1. When connecting the human blood vessel 5 through the blood vessel connection assembly, the two ends of the blood vessel connection assembly are respectively connected and fixed to the human blood vessel 5.

[0040] As shown in Figures 1 to 3, the vascular connection assembly is also provided with a connecting part 3, which includes a connecting line 31 and a suture needle 32, wherein the connecting line 31 passes through the artificial blood vessel 1 and the support tube 2, and both ends of the connecting line 31 are located outside the artificial blood vessel 1 and the support tube 2 and are pierced by a suture needle 32.

[0041] During the operation, after the end of the vascular connection component is aligned with the angle of the human blood vessel 5, the suture needles 32 at both ends of the connecting line 31 are respectively passed through different positions of the human blood vessel 5 from the inside to the outside, and then the human blood vessel 5 is sleeved on the outside of the vascular connection component, and the two ends of the connecting line 31 are knotted and sutured to ensure a stable connection between the human blood vessel 5 and the vascular connection component. Finally, the human blood vessel 5 and the vascular connection component are tied and fixed with a binding rope.

[0042] That is to say, in this embodiment, the artificial blood vessel 1, the support tube 2 and the connecting part 3 are connected into a whole. During the operation, the installation and suturing operations with the human blood vessel 5 can be performed directly. Compared with the prior art, the artificial blood vessel 1 and the support tube 2 are set as separate structures. During the operation, the artificial blood vessel 1 and the support tube 2 are sutured and fixed on site, and then the blood vessel connecting assembly and the human blood vessel 5 are sutured on site with the connecting line 31 and the suture needle 32. This reduces the fixing time of the artificial blood vessel 1 and the support tube 2, and reduces the time for passing the connecting line 31 through the artificial blood vessel 1 and the support tube 2 on site, effectively improving the operation efficiency, reducing the probability of patient damage due to long blood vessel suturing time, and reducing safety hazards.

[0043] Moreover, since the circumferential position of the connection part 3 on the support tube 2 in the vascular connection component has been determined, during the operation, it is only necessary to ensure the docking angle between the vascular connection component and the human blood vessel 5 to ensure the suture position between each connection part 3 and the human blood vessel 5. When suturing the human blood vessel 5, there is no need to re-identify the suture position, which further reduces the surgical suturing time. At the same time, it can also reduce the suturing technology requirements for the doctor, ensure that the suture position, shape, etc. meet the requirements, and reduce safety hazards.

[0044] Of course, the connecting portion 3 may also only include the connecting line 31. During surgery, the suture needle 32 is connected to the connecting line 31 and then suture is performed. When the end of the connecting line 31 is directly connected to the suture needle 32, the operation time can be further reduced.

[0045] Furthermore, in this embodiment, the connecting thread 31 may pass only through the artificial blood vessel 1 or only through the support tube 2. That is, the artificial blood vessel 1 and the human blood vessel 5 may be sutured together using the connecting thread 31, or the support ring 2 and the human blood vessel 5 may be sutured together using the connecting thread 31. Passing the connecting thread 31 through the artificial blood vessel 1, the support ring 2, and the human blood vessel 5 to achieve a suture connection further improves the stability of the suture connection.

[0046] Furthermore, in this embodiment, the number of connecting portions 3 is three, and they are evenly spaced along the circumference of the support tube 2. When the vascular connection assembly is used to connect the human aorta, the aorta has three aortic valves arranged along the circumference. Under normal conditions, when viewed from a cross-section, these three aortic valves are roughly evenly spaced along the circumference, with a junction between adjacent aortic valves. During installation, the connecting wire 31 can pass through this junction.

[0047] In this embodiment, there is no restriction on the positions of the three groups of connection parts 3 in the axial direction of the support tube 2. For example, the three groups of connection parts 3 can be set in the same cross section in the axial direction of the support tube 2, or in different cross sections in the axial direction of the support tube 2.

[0048] Of course, in this embodiment, there is no limit to the number of connecting parts 3, and it can also be two groups, four groups or more groups, which can be determined according to the actual application requirements of the blood vessel connecting component.

[0049] In this embodiment, a marking line is also provided on the outer surface of the support tube 2 or the artificial blood vessel 1. The marking line can ensure the installation angle of the vascular connection component and the human blood vessel 5 during the operation, and ensure to the greatest extent that the artificial blood vessel 1 fits tightly between the support tube 2 and the inner wall of the human blood vessel 5 to avoid bleeding.

[0050] In this embodiment, an annular mounting cavity 13 is provided at both ends of the artificial blood vessel 1, and the annular mounting cavity 13 is used to install the support tube 2. The annular mounting cavity 13 has two side ends, at least one of which is closed, so that the support tube 2 located inside is isolated from the blood flowing through the artificial blood vessel 1, avoiding blood clots caused by direct contact between the metal support tube 2 and the blood. At the same time, it can also avoid turbulent blood flow such as eddy currents caused by the edge of the support tube 2 contacting the high-speed blood flow, thereby ensuring smooth blood circulation.

[0051] As shown in Figures 2 and 3, the artificial blood vessel 1 includes a first tube body 11 and two second tube bodies 12. The two second tube bodies 12 are respectively located at the two ends of the first tube body 11, and the second tube body 12 is sleeved outside the first tube body 11. The first tube body 11 and the second tube body 12 enclose an annular mounting cavity 13, and the one side end of the annular mounting cavity 13 away from the other annular mounting cavity 13 is circumferentially closed.

[0052] Of course, in this embodiment, there is no restriction on the structure of the annular mounting cavity 13. The inner and outer walls of the support tube 2 can also be wrapped with a sheath respectively. The material of the sheath can be the same as that of the artificial blood vessel 1. Then, the support tube 2 wrapped with the sheath can be connected to the artificial blood vessel 1 and sutured to fix it.

[0053] When the annular mounting cavity 13 is formed between the first tube body 11 and the second tube body 12, the overall structure can be simplified and the cost can be reduced. At the same time, the overall thickness of the end of the blood vessel connection component can be reduced to avoid obstruction of blood circulation.

[0054] The first tube 11 is positioned within the support tube 2, and the second tube 12 is positioned outside the support tube 2. Blood flows through the first tube 11. This prevents the support tube 2 from interfering with blood flow, compared to solutions in which the support tube 2 is positioned within the artificial blood vessel 1. The inner diameter of the support tube 2 matches the outer diameter of the first tube 11, resulting in a smooth inner surface of the first tube 11, thus preventing wrinkles on the inner surface of the first tube 11 from interfering with blood flow.

[0055] The axial ends of the second tube body 12 are respectively located on both sides of the binding position. With this arrangement, the end of the annular mounting cavity 13 facing the other annular mounting cavity 13 can be an open structure, ensuring that the support tube 2 can be separated from the blood circulating inside the blood vessel. At the same time, it can further simplify the manufacturing process of the blood vessel connection component. Moreover, when assembling the blood vessel connection component, the support tube 2 can be installed in the annular mounting cavity 13 through the open structure, which is more convenient to operate.

[0056] In this embodiment, the end of the first tube body 11 is folded outward and extended axially to form the second tube body 12. That is, the first tube body 11 and the second tube body 12 are an integrated structure and are formed by folding the end of the first tube body 11. This can simplify the overall structure of the artificial blood vessel 1 while ensuring the sealing of the end of the annular mounting cavity 13.

[0057] Of course, when producing the artificial blood vessel 1, the second tube body 12 can be directly formed on the outer wall of the first tube body 11, so that the end of the second tube body 12 away from the other second tube body 12 is circumferentially fitted and sealed with the end or outer wall of the first tube body 11.

[0058] When the second tube body 12 is formed by folding the end of the first tube body 11 , the overall structure can be simplified, the manufacturing process can be simplified, and the cost can be reduced. In addition, the artificial blood vessel 1 already available in the prior art can be directly used, which has good flexibility.

[0059] Specifically, there are no restrictions on the method of securing the artificial blood vessel 1 to the support tube 2. As shown in Figures 2 and 3, multiple securing points 4 can be provided between the artificial blood vessel 1 and the support tube 2 to ensure stable securing therebetween. Each securing point 4 can be formed by suturing, or alternatively, the outer wall of the support tube 2 can be provided with a thorn-like protrusion that can penetrate the second tube 12 to prevent the support tube 2 from detaching from the second tube 12, thereby securing the support tube 2 to the artificial blood vessel 1. This further simplifies the securing operation between the support tube 2 and the artificial blood vessel 1.

[0060] As shown in Figures 2 and 3, the side wall of the support tube 2 is further provided with a through hole 21, through which the connecting line 31 of the connecting portion 3 passes. Moreover, when the fixing point 4 between the artificial blood vessel 1 and the support tube 2 is fixed by suturing, the support tube 2 is also provided with a corresponding through hole 21 at the fixing point 4 to facilitate the suturing operation.

[0061] To further facilitate the suturing operation, the side wall of the support tube 2 can also be provided with a guide surface at the end of the through hole 21. The guide surface can be an inclined surface or an arc surface. At the same time, the provision of the through hole 21 can also reduce the overall weight of the support tube 2.

[0062] Specifically, as shown in Figure 2, the through holes 21 are distributed on the side wall of the support tube 2 close to the other support tube 2. When the binding is performed later with the binding rope, the binding position is roughly located in the middle of the support tube 2 and the side of the support tube 2 away from the other support tube 2. The setting position of the through hole 21 is staggered with the binding position, which can ensure that the support tube 2 can provide sufficient radial support when the binding rope is used later to ensure the binding stability.

[0063] In this embodiment, there is no restriction on the number and size of the through holes 21 , as long as there are through holes 21 at the positions where suturing is required.

[0064] The axis of the support tube 2 can be a straight line or a curve. When the axis of the support tube 2 is a curve, the curvature of the curve can be designed according to the curvature of the human blood vessel 5 at this location.

[0065] Moreover, when the axis of the support tube 2 is a curve, after the human blood vessel 5 and the blood vessel connecting assembly are sleeved and connected, the support tube 2 can provide support in the radial direction and make the outer wall of the blood vessel connecting assembly fit tightly with the inner wall of the human blood vessel 5, avoiding bleeding. At the same time, it can also ensure the support stability of the support tube 2, which is convenient for the subsequent binding operation.

[0066] Annular protrusions 22 are respectively provided at both ends of the support tube 2 to limit the position of the binding rope, thereby preventing the binding rope from escaping from the end of the support tube 2 and ensuring the binding stability of the binding rope.

[0067] Specifically, the outer wall of the support tube 2 is provided with a total of three annular protrusions 22, wherein an annular protrusion 22 is provided at each of the two ends of the support tube 2. At the same time, a third annular protrusion 22 is provided on the side of the support tube 2 away from the other support tube 2, so that the binding rope is limited by two annular protrusions 22 arranged at intervals on the side of the binding position close to the end of the artificial blood vessel 1, and the stability is good.

[0068] In addition, a branch blood vessel (not shown in the figure) can be connected to the middle position of the artificial blood vessel 1. The branch blood vessel is connected to the first tube body 11 and is arranged outward roughly along the radial direction of the artificial blood vessel 1. The number and position of the branch blood vessels can be set according to the actual application position and requirements of the blood vessel connection component, and no specific restrictions are made here.

[0069] In this embodiment, the cross-section of the support tube 2 can be circular, elliptical, polygonal or other special shapes, and no specific limitation is made here.

[0070] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A blood vessel connection assembly, characterized in that: It comprises an artificial blood vessel (1) and a support tube (2); the support tube (2) is sleeve-connected to the artificial blood vessel (1) and fixed to the end of the artificial blood vessel (1).

2. The blood vessel connection assembly according to claim 1, characterized in that: The number of the support tubes (2) is two, and the two support tubes (2) are respectively fixed to the two ends of the artificial blood vessel (1).

3. The blood vessel connection assembly according to claim 1, characterized in that: It also comprises at least two groups of connection parts (3), wherein the connection parts (3) comprise connection lines (31), wherein the connection lines (31) pass through the artificial blood vessel (1) and / or the support tube (2), and both ends of the connection lines (31) are located outside the artificial blood vessel (1) and the support tube (2).

4. The blood vessel connection assembly according to claim 3, characterized in that: The connecting portion (3) further comprises a suture needle (32) arranged on the connecting line (31).

5. The blood vessel connection assembly according to claim 4, characterized in that: The number of the connecting parts (3) is three groups, and the connecting parts (3) are arranged at even intervals along the circumference of the support tube (2).

6. The blood vessel connection assembly according to claim 5, characterized in that: The outer wall of the support tube (2) or the outer wall of the artificial blood vessel (1) is also provided with a marking line.

7. The blood vessel connection assembly according to any one of claims 1 to 6, characterized in that: An annular installation cavity (13) is provided at the end of the artificial blood vessel (1), and the annular installation cavity (13) is used to install the support tube (2). At least one side end of the annular installation cavity (13) is closed to isolate the support tube (2) from the blood flowing through the artificial blood vessel (1).

8. The blood vessel connection assembly according to claim 7, characterized in that: The artificial blood vessel (1) comprises a first tube body (11) and a second tube body (12) sleeved on the outer side of the end of the first tube body (11); the first tube body (11) and the second tube body (12) enclose an annular installation cavity (13); the end of the annular installation cavity (13) is closed along the circumferential direction.

9. The blood vessel connection assembly according to claim 8, characterized in that: The two ends of the second tube (12) are respectively located on both sides of the binding position, and the binding position is the position bound with the human blood vessel (5) through the binding rope.

10. The blood vessel connection assembly according to claim 8, characterized in that: The end of the first tube (11) is folded outward and extended in the axial direction to form the second tube (12).

11. The blood vessel connection assembly according to claim 8, characterized in that: The artificial blood vessel (1) and the support tube (2) are fixed by suturing; Alternatively, the outer wall of the support tube (2) is also provided with a plurality of thorn-like protrusions at intervals, and the thorn-like protrusions can pass through the second tube body (12) to be fixed to the artificial blood vessel (1).

12. The blood vessel connection assembly according to any one of claims 1 to 6, characterized in that: A through hole (21) is provided on the side wall of the support tube (2).

13. The blood vessel connection assembly according to any one of claims 1 to 6, characterized in that: The axis of the support tube (2) is a curve.

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