Blood vessel fixing part and blood vessel connecting assembly

Abstract

The utility model relates to a blood vessel fixing part and a blood vessel connecting assembly, the blood vessel fixing part comprises a connecting part and two binding parts, and the two binding parts are located at the two ends of the connecting part respectively; the binding part comprises at least two binding ropes, the number of the binding ropes of the two binding parts is the same, and the connecting end of each binding rope is connected with the connecting part. According to the blood vessel fixing part, the binding stability can be guaranteed, meanwhile, the damage to the blood vessel wall caused by binding is avoided, and the binding stability is guaranteed.

Description

Technical Field

[0001] The present application relates to implantable medical devices, in the technical field, and in particular to a blood vessel fixing part and a blood vessel connecting assembly. Background Art

[0002] During the vascular connection operation, the two ends of the artificial blood vessel are connected to the human blood vessels respectively, and then supported by a support ring and fixed by binding ropes.

[0003] The artificial blood vessels and human blood vessels are fixed together by at least two binding ropes. During the binding process, the binding ropes are easy to cross on the side of the blood vessel facing away from the doctor and are not easy to be discovered. As a result, after binding, one binding rope presses on another binding rope. The position of the binding ropes may change later, causing the two crossed binding ropes to detach from each other, and some binding ropes to become loose and unable to fix.

[0004] Furthermore, since the binding ropes are crossed with each other, during the binding process, the pulling of one binding rope will act on the blood vessel wall through the cross-action with another binding rope, causing additional damage to the blood vessel wall and making the binding pressure unevenly distributed.

[0005] Therefore, regarding the binding and fixation between artificial blood vessels and human blood vessels, how to ensure the stability of the binding while avoiding damage to the blood vessel wall and ensuring the stability of the binding is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0006] The purpose of the present application is to provide a blood vessel fixing part and a blood vessel connecting assembly, which can avoid damage to the blood vessel wall caused by the binding and ensure the stability of the binding while ensuring the stability of the binding.

[0007] In order to solve the above-mentioned technical problems, the present application provides a blood vessel fixing part, including a connecting part and two binding parts, and the two binding parts are respectively located at the two ends of the connecting part; the binding part includes at least two binding ropes, and the number of binding ropes of the two binding parts is the same, and the connecting ends of each binding rope are respectively connected to the connecting part.

[0008] Optionally, the length of the connecting portion is not greater than the circumference of the blood vessel to be bound.

[0009] Optionally, the connecting portion is a connecting sheet, and the connecting sheet and the binding portion are integrally formed.

[0010] The present application also provides a blood vessel connection assembly, comprising an artificial blood vessel, a support ring and the blood vessel fixing part as described above, wherein the support ring is sleeved with the end of the artificial blood vessel and is used to support the artificial blood vessel in a radial direction, and the end of the artificial blood vessel is sleeved in the human blood vessel and is tied and fixed by the blood vessel fixing part.

[0011] Optionally, both ends of the support ring are structures that gradually expand outwards.

[0012] Optionally, outer walls at both ends of the support ring are respectively provided with first protrusions along the circumferential direction.

[0013] Optionally, a second protrusion is further provided on the outer wall of the support ring along the circumferential direction. The second protrusion is located on a side away from the other support ring and is spaced apart from the first protrusion.

[0014] Optionally, the axis of the support ring is a curve.

[0015] Optionally, the support ring is fixed to the artificial blood vessel; the blood vessel connecting assembly also includes a suture portion, the suture portion includes a suture thread and a suture needle, the suture thread passes through the artificial blood vessel and the support ring, and the two ends of the suture thread are respectively connected to the suture needle.

[0016] Optionally, the support ring is sleeved outside the artificial blood vessel and fixed to the artificial blood vessel, and the end of the artificial blood vessel is folded outwards and wraps the support ring.

[0017] Compared with the prior art, the blood vessel fixing part and blood vessel connecting assembly provided by the present application have the following beneficial effects:

[0018] When fixing human blood vessels and artificial blood vessels, the connecting part is located on the side of the blood vessel facing the patient's body, that is, the side away from the doctor, and the binding rope is located on the side facing the doctor. In other words, the two sets of binding ropes are connected by the connecting part at a position that is not easy to be found on the side away from the doctor. After binding and fixing, the two sets of binding ropes are still connected by the connecting part, and the relative positions between them are stable and will not be separated, thereby avoiding the loosening of the two sets of binding ropes arranged crosswise due to changes in relative positions after binding, thereby ensuring the fixation stability of the blood vessel fixing part.

[0019] Furthermore, during the binding process, the binding rope is pulled and knotted. Due to the connection of the connecting part, the binding rope will not pull the blood vessel wall during the pulling process, thereby avoiding additional damage to the blood vessel wall. The binding rope and the connecting part can provide radial binding force to the blood vessel uniformly along the circumferential direction, that is, ensure that the binding pressure of the blood vessel fixing part on the blood vessel is uniform along the circumferential direction, and at the same time, combined with the support of the support ring, the binding stability is guaranteed.

[0020] Due to the setting of the connecting part, the tying operation of the second set of tying ropes has no effect on the tying of the first set of tying ropes. Therefore, during the tying process, two doctors can perform the tying operation at the same time, which effectively improves the tying efficiency and shortens the operation time.

[0021] Specifically, there is no restriction on the number of binding ropes of the binding parts. For example, each binding part may include three, four or more binding ropes. The number of binding ropes of two binding parts is the same, and two binding ropes corresponding to each other form a group. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the blood vessel connection assembly provided in an embodiment of the present application in a state of being fixed to a human blood vessel;

[0023] Figure 2 and Figure 3 yes Figure 1 Schematic diagram of the structure of the middle blood vessel fixation part;

[0024] Figure 4 yes Figure 1 A partial enlarged view of the

[0025] Figure 5 yes Figure 4 A cross-sectional view of

[0026] Figure 6 yes Figure 1 A schematic diagram of the structure of the middle blood vessel fixation part in an unfixed state;

[0027] Figure 7 yes Figure 1 Cross-sectional view of the artificial blood vessel and support ring.

[0028] Attached Figure 1-Figure 7 In the figure, the reference numerals are described as follows:

[0029] 1 blood vessel fixing part, 11 connecting part, 12 tying part, 121 tying rope, 13 rope knot;

[0030] 2 artificial blood vessels, 21 receiving chambers;

[0031] 3 support ring, 31 through hole, 32 first protrusion, 33 second protrusion;

[0032] 4 Human blood vessels;

[0033] 5 fixed points;

[0034] 61 first convex part, 62 second convex part

[0035] 7 suture part, 71 suture thread, 72 suture needle. DETAILED DESCRIPTION

[0036] 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 in conjunction with the accompanying drawings and specific embodiments.

[0037] The embodiment of the present application provides a blood vessel connection component and a blood vessel fixing part, wherein the blood vessel connection component refers to a component that plays a connecting role at the disconnection of a human blood vessel 4, specifically comprising a blood vessel fixing part 1, an artificial blood vessel 2 and a support ring 3, wherein the two ends of the artificial blood vessel 2 are respectively connected to the human blood vessel 4, and radial support is provided by the support ring 3, and then Figure 1 As shown, the human blood vessel 4 and the artificial blood vessel 2 can be fixed from the outside through the blood vessel fixing part 1.

[0038] Among them, the support ring 3 can provide radially outward supporting force to the artificial blood vessel 2 and the human blood vessel 4, and the blood vessel fixing part 1 can provide radially inward binding force to the artificial blood vessel 2 and the human blood vessel 4. Through the joint action of the blood vessel fixing part 1 and the support ring 3, the human blood vessel 4 and the artificial blood vessel 2 can be stably fixed.

[0039] like Figure 2 and Figure 3 As shown, the blood vessel fixing part 1 includes a connecting part 11 and two binding parts 12, wherein the two binding parts 12 are respectively located at two ends of the connecting part 11, and each binding part 12 includes two binding ropes 121, and the connecting ends of each binding rope 121 are respectively connected to the connecting part 11, and the binding ropes 121 of the two binding parts 12 are arranged one by one, and the corresponding two binding ropes 121 can form a group, and each group of binding ropes 121 are connected through the connecting part 11.

[0040] When the artificial blood vessel 2 and the human blood vessel 4 are tied and fixed by the blood vessel fixing part 1, one tying part 12 is passed through the human blood vessel 4 toward one side of the patient's body, so that the two tying parts 12 are located on both sides of the blood vessel. Figure 6 As shown, the binding ropes 121 of the two binding parts 12 are then tied and fixed one by one to form a Figure 1 The form shown is sufficient.

[0041] When fixing the human blood vessel 4 and the artificial blood vessel 2, the connecting portion 11 is located on the side of the blood vessel facing the patient's body, that is, the side away from the doctor, and the binding rope 121 is located on the side facing the doctor. That is to say, the two groups of binding ropes 121 are connected by the connecting portion 11 at a position that is not easy to be found on the side away from the doctor. After being tied and fixed, the two groups of binding ropes 121 are still connected by the connecting portion 11, and the relative positions between them are stable and will not detach, thereby avoiding the loosening of the two groups of binding ropes 121 arranged crosswise due to changes in relative positions after tying, thereby ensuring the fixation stability of the blood vessel fixing portion 1.

[0042] Furthermore, during the binding process, by pulling the binding rope 121 and tying a knot, due to the connection of the connecting portion 11, the binding rope 121 will not pull the blood vessel wall during the pulling process, thereby avoiding additional damage to the blood vessel wall. The binding rope 121 and the connecting portion 11 can provide a radial binding force to the blood vessel uniformly along the circumferential direction, that is, ensure that the binding pressure of the blood vessel fixing portion 1 on the blood vessel is uniform along the circumferential direction, and at the same time, combined with the support of the support ring 3, the binding stability is guaranteed.

[0043] Due to the setting of the connecting part 11, the binding operation of the second group of binding ropes 121 has no effect on the binding of the first group of binding ropes 121. Therefore, during the binding process, two doctors can perform the binding operation at the same time, which effectively improves the binding efficiency and shortens the operation time.

[0044] Specifically, there is no limit to the number of the binding ropes 121 of the binding part 12, for example, each binding part 12 may include three, four or more binding ropes 121, and the number of binding ropes 121 of the two binding parts 12 is the same, and the two binding ropes 121 corresponding to each other form a group. For the convenience of description, the following description will be based on the example that the binding part 12 is provided with two binding ropes 121.

[0045] In this embodiment, the length of the connecting portion 11 is not greater than the circumference of the blood vessel to be tied, where the circumference of the blood vessel to be tied refers to the circumference of the outer wall of the human blood vessel 4 after the artificial blood vessel 2 is sheathed on the human blood vessel 4. When tying the blood vessel, the tying ropes 121 at both ends of the connecting portion 11 can be directly knotted, which is convenient for the tying operation.

[0046] Of course, the length of the connecting portion 11 can also be greater than the circumference of the blood vessel to be bound. During binding, the blood vessel fixing portion 1 can wrap around the blood vessel twice or more, and the binding rope 121 is located on the side surface of the connecting portion 11 away from the blood vessel. While ensuring the stability of the binding, it can also prevent the binding rope 121 from pulling the blood vessel wall, and the pressure on the blood vessel in the circumferential direction is more uniform.

[0047] In this embodiment, there is no limitation on the specific structure of the connection part 11, which may be a connecting plate or a knot, wherein the knot refers to a knot formed by two sets of binding ropes. When the connection part 11 is set as a knot, the structure is relatively simple. Two binding ropes 121 are tied in the middle to form a knot, and the knot forms the connection part 11, which can be realized by the existing binding ropes 121 and has a wide range of applications.

[0048] When the connecting portion 11 is configured as a connecting sheet with a sheet-like structure, the connecting portion 11 can have better flatness and stability when it is attached to the blood vessel, thereby avoiding pulling on the blood vessel wall and ensuring more uniform pressure.

[0049] The connecting piece and the binding part 12 are integrally formed. Alternatively, the connecting piece and the binding part 12 can be fixed by sewing. The integrally formed structure is simpler and the installation process is simpler. Figure 2 and Figure 3 As shown, the binding portion 12 is formed by extending the end of the connecting piece, and the connecting ends of the two binding ropes 121 of the binding portion 12 can be arranged adjacent to each other or spaced apart, and no specific limitation is made here.

[0050] The two side ends of the support ring 3 are respectively of a structure that gradually expands outward. Taking the cross-section of the support ring 3 as an example, the gradually expanding structure means that the diameter of the support ring 3 gradually changes, and the diameter of the end of the support ring 3 is larger than the diameter of the middle of the support ring 3. When binding is performed through the blood vessel fixing part 1, the binding position is roughly located in the middle of the support ring 3. The diameters of the two ends of the support ring 3 are larger, which can limit the binding rope 121 and prevent the binding rope 121 from detaching from the support ring 3 along the axial direction, thereby ensuring the stability of the binding rope 121 for binding the blood vessel.

[0051] Of course, the cross section of the support ring 3 may also be other shapes, such as an ellipse, a polygon, etc. The cross-sectional area of ​​the end of the support ring 3 is larger than the cross-sectional area of ​​the middle position.

[0052] like Figure 4 and Figure 5 As shown, the outer walls of both side ends of the support ring 3 are respectively provided with first protrusions 32 along the circumferential direction. When the human blood vessel 4 is placed outside the artificial blood vessel 2, a first protrusion 61 corresponding to the first protrusion 32 can be formed outside the human blood vessel 4. The two first protrusions 61 can further limit the binding rope 121 from both ends of the support ring 3 to prevent the binding rope 121 from detaching from the support ring 3.

[0053] Furthermore, the outer wall of the support ring 3 is also provided with a second protrusion 33 along the circumferential direction. The second protrusion 33 is provided on the side of the support ring 3 away from the other support ring 3 and is spaced apart from the first protrusion 32. Figure 4 and Figure 5 As shown, after the human blood vessel 4 is sleeved outside the artificial blood vessel 2, a second convex portion 62 corresponding to the first convex portion 32 can be formed outside the human blood vessel 4. In the tied state, the binding rope 121 is easy to detach from the side of the support ring 3 away from the other support ring 3, and the first convex portion 61 and the second convex portion 62 arranged at intervals can limit the binding rope 121 in two ways, thereby ensuring the stability of the binding rope 121.

[0054] The axis of the support ring 3 can be a straight line or a curve. When the axis of the support ring 3 is a curve, the curvature of the curve can be designed according to the curvature of the human blood vessel 4 at this location.

[0055] Moreover, when the axis of the support ring 3 is a curve, after the human blood vessel 4 and the blood vessel connecting assembly are sleeved and connected, the support ring 3 can provide support in the radial direction and make the outer wall of the artificial blood vessel 2 and the inner wall of the human blood vessel 4 fit more closely, thereby ensuring the stability of the support ring 3, facilitating the subsequent binding operation, and avoiding bleeding.

[0056] like Figure 7 As shown, the artificial blood vessel 2 and the support ring 3 are fixed by a plurality of fixing points 5, and the fixing points 5 are arranged at intervals along the circumference and axial direction of the artificial blood vessel 2 to ensure the fixing stability between the artificial blood vessel 2 and the support ring 3. Specifically, the fixing points 5 can be formed by needle and thread suturing, or by other fixing parts.

[0057] The blood vessel connection component also includes a suture portion 7, which includes a suture thread 71 and a suture needle 72, wherein the suture thread 71 passes through the artificial blood vessel 2 and the support ring 3, and the two ends of the suture thread 71 are respectively located outside the artificial blood vessel 2 and the support ring 3, and the two ends of the suture thread 71 are respectively connected to the suture needle 72. Before the artificial blood vessel 2 is sleeved with the human blood vessel 4, the suture needle 72 is first passed through different positions of the human blood vessel 4 from the inside to the outside, and then the human blood vessel 4 is sleeved on the outside of the blood vessel connection component, and the two ends of the suture thread 71 are knotted and sutured, so that the connection between the human blood vessel 4 and the blood vessel connection component is stable, and finally the human blood vessel 4 and the blood vessel connection component are fixed by the blood vessel fixing portion 1.

[0058] That is to say, the artificial blood vessel 2, the support ring 3 and the suture part 7 are all integrated structures. During the operation, they can be directly installed and sutured with the human blood vessel 4. Compared with the prior art, the artificial blood vessel 2 and the support ring 3 are set as separate structures. During the operation, the artificial blood vessel 2 and the support ring 3 are sutured and fixed on site, and then the vascular connection component and the human blood vessel are sutured with suture thread 71 and suture needle 72 on site. This effectively reduces the time of surgical operation, effectively improves the efficiency of the operation, reduces the probability of patient physical injury due to long vascular suturing time, and reduces safety hazards.

[0059] like Figure 7 As shown, the end of the artificial blood vessel 2 is folded outward and extends in the axial direction to enclose a circumferentially arranged accommodation cavity 21 at the end of the artificial blood vessel 2, and the support ring 3 is located in the accommodation cavity 21 and fixed to the artificial blood vessel 2. In other words, the end of the artificial blood vessel 2 is folded outward and wraps the support ring 3, and then the artificial blood vessel 2 and the support ring 3 are fixed through the fixing point 5. In this way, the support ring 3 will not provide resistance to the blood flowing through the blood vessel, ensuring smooth blood flow. At the same time, it can also isolate the support ring 3 from the blood, avoiding the situation where the metal support ring 3 directly contacts the blood and forms blood clots.

[0060] like Figure 5 and Figure 7 As shown, the side wall of the support ring 3 is also provided with a through hole 31, and the suture thread 71 of the suture part 7 passes through the through hole 31. The through hole 31 also facilitates the fixation between the artificial blood vessel 1 and the support ring 3 by suturing. At the same time, the provision of the through hole 31 can also reduce the overall weight of the support ring 3.

[0061] Specifically, Figure 5 and Figure 7 As shown, the through holes 31 are distributed on the side wall of the support ring 3 close to another support ring 3 to avoid the binding position, so as to ensure that the support ring 3 can provide sufficient radial support when binding with a binding rope in the later stage, and ensure the binding stability. There is no restriction on the number and size of the through holes 31, and it is sufficient to ensure that there are through holes 31 at the position where suturing is required.

[0062] The above are only preferred implementations 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 fixing part, characterized in that: It comprises a connecting portion (11) and two binding portions (12), wherein the two binding portions (12) are respectively located at two ends of the connecting portion (11); The binding portion (12) comprises at least two binding ropes (121), the two binding portions (12) have the same number of binding ropes (121), and the connecting ends of the binding ropes (121) are respectively connected to the connecting portion (11).

2. The blood vessel fixing portion according to claim 1, characterized in that: The length of the connecting portion (11) is no greater than the circumference of the blood vessel to be bound.

3. The blood vessel fixing portion according to claim 1, characterized in that: The connecting portion (11) is a connecting piece, and the connecting piece and the binding portion (12) are integrally formed.

4. A blood vessel connection assembly, characterized in that: It comprises an artificial blood vessel (2), a support ring (3) and a blood vessel fixing part as described in any one of claims 1 to 3, wherein the support ring (3) is sleeved with the end of the artificial blood vessel (2) and is used to support the artificial blood vessel (2) in the radial direction, and the end of the artificial blood vessel (2) is sleeved in a human blood vessel (4) and is tied and fixed by the blood vessel fixing part.

5. The blood vessel connection assembly according to claim 4, characterized in that: Both ends of the support ring (3) are structures that gradually expand outwards.

6. The blood vessel connection assembly according to claim 5, characterized in that: The outer walls at both ends of the support ring (3) are respectively provided with first protrusions (32) along the circumferential direction.

7. The blood vessel connection assembly according to claim 6, characterized in that: The outer wall of the support ring (3) is also provided with a second protrusion (33) along the circumferential direction. The second protrusion (33) is located on a side away from the other support ring (3) and is spaced apart from the first protrusion (32).

8. The blood vessel connection assembly according to any one of claims 4 to 7, characterized in that: The axis of the support ring (3) is a curve.

9. The blood vessel connection assembly according to any one of claims 4 to 7, characterized in that: The support ring (3) is fixed to the artificial blood vessel (2); The blood vessel connection assembly further comprises a suture portion (7), wherein the suture portion (7) comprises a suture thread (71) and a suture needle (72), wherein the suture thread (71) passes through the artificial blood vessel (2) and the support ring (3), and the two ends of the suture thread (71) are respectively connected to the suture needle (72).

10. The blood vessel connection assembly according to claim 9, characterized in that: The support ring (3) is sleeved outside the artificial blood vessel (2) and fixed to the artificial blood vessel (2), and the end of the artificial blood vessel (2) is folded outwards and wraps around the support ring (3).

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