Aortic anastomosis support ring

Abstract

The present invention discloses a support ring for aortic anastomosis, comprising an artificial blood vessel and a support ring. The support ring is arranged at both ends of the artificial blood vessel and sutured with the artificial blood vessel. The support ring is arc-shaped, and a plurality of elliptical first through holes are arranged on the surface of the support ring. A circle of first chamfers is arranged on the inner circumference of the first through holes. The device is used for suturing blood vessels at the positions of the ascending aorta, aortic arch and the like. The support ring is in the artificial blood vessel, the artificial blood vessel is in the aorta, and finally the three are tied and fixed with a band outside the aorta. After anastomosis, the curvature of the aorta itself can be formed and bleeding can be effectively avoided, thereby significantly reducing the anastomosis time.

Description

[0001] FIELD OF THE INVENTION The present invention relates to a vascular suturing device, and more particularly to a support ring for aortic anastomosis.

[0002] BACKGROUND ART Existing rings for connecting blood vessels generally adopt a straight cylindrical structure. In actual application, the blood flow speed in the human artery is relatively fast, and due to the shape of the human aortic arch, it is very easy for the straight cylindrical connecting ring to shake in the blood vessel and cannot be well combined with the position of the aortic arch, which is prone to bleeding after binding. In addition, due to the small operating space during surgery, the straight cylindrical connecting ring is not conducive to grasping and fixing. Summary of the invention

[0003] The problem to be solved by the present invention is to provide an aortic anastomosis support ring which can suture blood vessels at the ascending aorta, aortic arch and other positions and can effectively avoid bleeding.

[0004] The present invention provides a support ring for aortic anastomosis, comprising an artificial blood vessel and a support ring, wherein the support ring is arranged at both ends of the artificial blood vessel and is sutured with the artificial blood vessel, the support ring is arc-shaped, a surface of the support ring is provided with a plurality of elliptical first through holes, and the inner circumference of the first through hole is provided with a circle of first chamfers.

[0005] Furthermore, the distance between the cross sections when the first chamfer is parallel to the axis direction of the support ring gradually decreases to the distance between the cross sections when the first chamfer is perpendicular to the axis direction of the support ring.

[0006] Furthermore, a circle of first protrusions is provided at both ends of the outer wall of the support ring, and a second chamfer is provided on the outer periphery of the first protrusions.

[0007] Furthermore, the first through holes are staggered and evenly distributed.

[0008] Furthermore, it also includes a kit, which is cylindrical and hollow inside, and the surface of the kit is provided with a plurality of evenly distributed and interlaced elliptical second through holes, and the inner circumference of the second through holes is provided with a circle of third chamfers, and both ends of the kit are provided with a circle of second protrusions, and the distance between the cross-sections when the third chamfers are parallel to the axial direction of the support ring gradually decreases to the distance between the cross-sections when the third chamfers are perpendicular to the axial direction of the support ring.

[0009] Furthermore, a fourth chamfer is provided on the outer periphery of the second protrusion.

[0010] Furthermore, the kit and the support ring are both made of nickel-titanium alloy material.

[0011] Furthermore, the outer wall of the support ring is provided with a plurality of evenly distributed marking lines.

[0012] Furthermore, it also includes a pattern arranged on the outer periphery of the support ring, the pattern is in the form of a plurality of annular grooves evenly distributed on the outer periphery of the support ring, a plurality of thorn-like protrusions are arranged on the surface of the pattern, the thorn-like protrusions are staggeredly distributed, and also includes a binding band, the binding band is used to bind the pattern of the support ring and the connection between the artificial blood vessel,

[0013] Furthermore, a plurality of artificial branch blood vessels are provided on the surface of the artificial blood vessel, and the artificial branch blood vessels are distributed along the radial direction of the artificial blood vessel.

[0014] The beneficial effects of the present invention are:

[0015] The support ring for aortic anastomosis of the present invention will come into contact with a large amount of blood during the process of suturing arterial blood vessels, which will cause the surface of the support ring to be very slippery and difficult to grasp and fix, thereby reducing the suturing time and the effect of the artificial blood vessel after suturing. The elliptical first through hole and the first chamfer on the support ring facilitate the guidance of the needle used for suturing. When the needle head of the needle used for suturing contacts the first chamfer, the first chamfer is relatively smooth, so that the needle head can move along the first chamfer, thereby improving the efficiency of suturing. Moreover, since the first through hole is elliptical and the cooperation of the first through hole and the first chamfer can reduce the interference with normal blood flow and improve the stability of the support ring. In addition, when used for suturing the aortic arch or the ascending aorta, the support ring is arc-shaped and can be in close contact with the inner wall of the artificial blood vessel. When it is tied with the blood vessels of the human body itself, the movement of the support ring inside the blood vessel can also be effectively reduced. The thorn-like protrusions can penetrate the artificial blood vessel and the human body's own aorta. The polyester fiber material bandage with a certain thickness buries the tip of the thorn-like protrusion, which can fully fix the three-layer structure and prevent the aorta from tearing and slipping, so that its mechanical properties meet the requirements of binding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the cooperation between the support ring and the artificial blood vessel of the support ring for aortic anastomosis in Embodiment 1 of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure of the aortic anastomosis support ring according to the first embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the first chamfer structure in the first through hole of the aortic anastomosis support ring according to the first embodiment of the present invention;

[0020] Figure 4 It is an assembly diagram of the support ring and the artificial blood vessel of the support ring for aortic anastomosis of Embodiment 1 of the present invention;

[0021] Figure 5 This is a schematic diagram of the overall structure of a kit of a support ring for aortic anastomosis according to Embodiment 1 of the present invention;

[0022] Figure 6 This is a schematic diagram of the third chamfer structure in the second through hole of the aortic anastomosis support ring according to the first embodiment of the present invention;

[0023] Figure 7 A cross-sectional view of a support ring for aortic anastomosis according to Embodiment 1 of the present invention;

[0024] Figure 8 A cross-sectional view of a kit of a support ring for aortic anastomosis according to Embodiment 1 of the present invention;

[0025] Fig. 9 This is a schematic diagram of the cooperation between the support ring and the artificial blood vessel of the support ring for aortic anastomosis of the second embodiment of the present invention;

[0026] Fig.10 The aortic anastomosis support ring of the second embodiment of the present invention Fig. 9 A local enlarged schematic diagram.

[0027] In the figure, 1 is an artificial blood vessel, 2 is a support ring, 3 is a first through hole, 4 is a first chamfer, 5 is a first protrusion, 6 is a kit, 7 is a second through hole, 8 is a second chamfer, 9 is a third chamfer, 10 is a second protrusion, 11 is a fourth chamfer, 12 is a marking line, 13 is a texture, 14 is a thorn-like protrusion, 15 is a bandage, and 16 is an artificial branch blood vessel. DETAILED DESCRIPTION

[0028] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0029] Embodiment 1

[0030] See also Figures 1 to 8The present invention provides a support ring for aortic anastomosis, comprising an artificial blood vessel 1 and a support ring 2, wherein the support ring 2 is arranged at both ends of the artificial blood vessel 1 and sutured with the artificial blood vessel 1, the support ring 2 is arc-shaped, and a plurality of elliptical first through holes 3 are arranged on the surface of the support ring 2, and a circle of first chamfers 4 are arranged on the inner circumference of the first through holes 3. Since the support ring 2 will be in contact with a large amount of blood during the process of suturing the arterial blood vessels, the surface of the support ring 2 is very slippery and difficult to hold and fix, which reduces the suturing time and the effect of the artificial blood vessel 1 after suturing. The elliptical first through holes 3 and the first chamfers 4 on the support ring 2 facilitate guiding the needle used for suturing. When the needle tip of the needle used for suturing contacts the first chamfer 4, since the first chamfer 4 is relatively smooth, the needle tip can be guided along the first chamfer 4. The first chamfer 4 moves to improve the efficiency of suturing. In addition, the needle used for suturing can pass through the first through hole 3 on the support ring 2 and penetrate the artificial blood vessel 1 and the blood vessel wall of the human body at the same time, so that the three are fixed. When bandaging is performed from the outside of the aorta, it is simple and the positioning is accurate. Moreover, since the first through hole 3 is elliptical and the cooperation of the first through hole 3 and the first chamfer 4 can reduce the interference with normal blood flow and improve the stability of the support ring 2. In addition, when used for suturing the aortic arch or the ascending aorta, since the support ring 2 is arc-shaped, it can be in close contact with the inner wall of the artificial blood vessel 1. When it is tied with the human body's own blood vessels, it can also effectively reduce the movement of the support ring 2 inside the blood vessels. This can save a lot of suturing time and avoid postoperative bleeding caused by a large number of sutures.

[0031] Specifically, the distance between the cross sections when the first chamfer 4 is parallel to the axial direction of the support ring 2 and the distance between the cross sections when the first chamfer 4 is perpendicular to the axial direction of the support ring 2 gradually decreases, the long axis of the first through hole 3 is parallel to the axis of the support ring 2, and the short axis of the first through hole 3 is perpendicular to the axis of the support ring 2. The arrangement of the first through holes 3 and the structure of the first chamfer 4 can effectively reduce the impact of blood flow, and can also avoid the generation of eddy currents at the position of the first through holes 3 and the occurrence of thrombosis at the position of the first through holes 3.

[0032] Specifically, both ends of the outer wall of the support ring 2 are provided with a circle of first protrusions 5, and the outer periphery of the first protrusions 5 is provided with a second chamfer 8. The first protrusions 5 can facilitate the bundling of the artificial blood vessel 1 and the human body's own blood vessels during surgery, avoiding relative sliding between the artificial blood vessel 1 and the human body's own blood vessels, effectively reducing the occurrence of bleeding, and also avoiding the slippage of the wire used for bundling.

[0033] Specifically, the first through holes 3 are staggered and evenly distributed, and the distribution of the first through holes 3 can minimize the amount of metal foreign matter.

[0034] Specifically, it also includes a set 6, which is cylindrical and hollow inside, and the surface of the set 6 is provided with a plurality of evenly distributed and mutually staggered elliptical second through holes 7, and the inner circumference of the second through hole 7 is provided with a circle of third chamfers 9, and both ends of the set 6 are provided with a circle of second protrusions 10, and the distance between the cross-sections when the third chamfers 9 are parallel to the axial direction of the set 6 gradually decreases to the distance between the cross-sections when the third chamfers 9 are perpendicular to the axial direction of the set 6. Since the set 6 will be used in the process of arterial vascular suturing in large quantities, The sleeve 6 is in contact with blood, which makes the surface of the sleeve 6 very slippery and difficult to fix, which is not conducive to the suturing of the artificial blood vessel 1, greatly reducing the suturing time and the effect of the artificial blood vessel 1 after suturing. The elliptical second through hole 7 and the third chamfer 9 on the sleeve 6 facilitate the guidance of the needle used for suturing. When the needle head of the needle used for suturing contacts the third chamfer 9, the third chamfer 9 is relatively smooth, so that the needle head can move along the third chamfer 9, thereby improving the efficiency of suturing. The needle used for suturing can pass through the second through hole 7 on the sleeve 6 and penetrate the artificial blood vessel 1 and the human body at the same time. The blood vessel wall of the artificial blood vessel 1 is fixed. When the bandage is performed from the outside of the brachiocephalic artery, it is simple and the alignment is accurate. Moreover, since the second through hole 7 is elliptical and the cooperation of the second through hole 7 and the third chamfer 9 can reduce the impact of the blood flow on the set 6, the stability of the set 6 is improved. In addition, when used for suturing the position of the brachiocephalic artery, it can be in close contact with the inner wall of the artificial blood vessel 1. When it is tied with the blood vessels of the human body, it can also effectively reduce the movement of the set 6 inside the blood vessel. The long axis of the second through hole 7 is parallel to the axis of the set 6, and the second through hole The short axis of 7 is perpendicular to the axis of the kit 6. The arrangement of the second through holes 7 and the structure of the third chamfer 9 can effectively reduce the impact of blood flow, and can also avoid the eddy current phenomenon of blood flow at the position of the second through holes 7 and avoid the thrombosis phenomenon at the position of the second through holes 7. The second protrusion 10 can facilitate the bundling of the artificial blood vessel 1 and the human body's own blood vessels during surgery to avoid relative sliding between the artificial blood vessel 1 and the human body's own blood vessels, which can effectively reduce the occurrence of blood leakage and avoid the slippage of the wire used for bundling.

[0035] Specifically, a fourth chamfer 11 is provided on the outer periphery of the second protrusion 10 , and the fourth chamfer 11 enables the kit 6 to be better combined with the artificial blood vessel.

[0036] Specifically, the kit 6 and the support ring 2 are both made of nickel-titanium alloy material, which makes the device safer and more durable when used and has better compatibility with the human body.

[0037] Specifically, the outer wall of the support ring 2 is provided with a plurality of evenly distributed marking lines 12. The marking lines 12 enable the medical staff to place the support ring 2 at an accurate angle on the aortic arch or ascending aorta during the operation, and to make the support ring 2 fit closely between the artificial blood vessel 1 and the aortic arch or ascending aorta as much as possible.

[0038] Embodiment 2

[0039] See attached Figures 9 to 10 The difference between this embodiment and the first embodiment is that it also includes a texture 13 arranged on the periphery of the support ring 2, and the texture 13 is in the form of a plurality of annular grooves uniformly distributed on the periphery of the support ring 2. The surface of the texture 13 is provided with a plurality of thorn-like protrusions 14, and the thorn-like protrusions 14 are staggered. It also includes a bandage 15, and the bandage 15 is used to be tied to the connection between the texture 13 of the support ring 2 and the artificial blood vessel 1. The bandage 15 can be made of a polyester fiber material with a certain thickness, so that its mechanical properties can meet the requirements of bundling. The thorn-like protrusions 14 can penetrate the artificial blood vessel 1 and the human body's own aorta, and the bandage 15 can fully fix the three-layer structure to prevent the aorta from tearing and slipping, and can avoid the relative slippage between the artificial blood vessel 1 and the human body's blood vessels. The texture 13 on the surface of the support ring 2 can effectively prevent blood leakage, and the bandage 15 can also prevent the thorn-like protrusions 14 from stabbing surrounding tissues.

[0040] Specifically, a plurality of artificial branch blood vessels 16 are provided on the surface of the artificial blood vessel 1, and the artificial branch blood vessels 16 are distributed along the radial direction of the artificial blood vessel 1, so that the distribution area of ​​the artificial branch blood vessels 16 is shortened, saving the anastomosis space between the ascending aorta and the aortic arch, facilitating the anastomosis work, leaving enough space for the design of the support ring 2, and also reserving an anchoring area of ​​sufficient length for placing the aortic stent in subsequent operations.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A support ring for aortic anastomosis, characterized in that: It includes an artificial blood vessel and a support ring, wherein the support ring is arranged at both ends of the artificial blood vessel and sutured with the artificial blood vessel, the support ring is arc-shaped, the surface of the support ring is provided with a plurality of elliptical first through holes, the inner circumference of the first through holes is provided with a circle of first chamfers; the first through holes are staggered and evenly distributed; it also includes a pattern arranged on the outer circumference of the support ring, the pattern is in the form of a plurality of annular grooves evenly distributed on the outer circumference of the support ring, the surface of the pattern is provided with a plurality of thorn-shaped protrusions, and the thorn-shaped protrusions are staggered; The distance between the cross-sections when the first chamfer is parallel to the axial direction of the support ring gradually decreases to the distance between the cross-sections when the first chamfer is perpendicular to the axial direction of the support ring; the kit is also included, the kit is cylindrical and hollow inside, the surface of the kit is provided with a plurality of evenly distributed and mutually staggered elliptical second through holes, and the inner circumference of the second through holes is provided with a circle of third chamfers, and both ends of the kit are provided with a circle of second protrusions, and the distance between the cross-sections when the third chamfer is parallel to the axial direction of the support ring gradually decreases to the distance between the cross-sections when the third chamfer is perpendicular to the axial direction of the support ring.

2. The aortic anastomosis support ring according to claim 1, characterized in that: A circle of first protrusions is provided at both ends of the outer wall of the support ring, and a second chamfer is provided on the outer periphery of the first protrusions.

3. The aortic anastomosis support ring according to claim 2, characterized in that: A fourth chamfer is provided on the outer periphery of the second protrusion.

4. The aortic anastomosis support ring according to claim 3, characterized in that: The kit and the support ring are both made of nickel-titanium alloy material.

5. The aortic anastomosis support ring according to claim 4, characterized in that: The outer wall of the support ring is provided with a plurality of evenly distributed marking lines.

6. The aortic anastomosis support ring according to claim 5, characterized in that: It also includes a binding belt, which is used to bind the texture of the support ring and the connection between the artificial blood vessel.

7. The aortic anastomosis support ring according to claim 6, characterized in that: A plurality of artificial branch blood vessels are arranged on the surface of the artificial blood vessel, and the artificial branch blood vessels are distributed along the radial direction of the artificial blood vessel.

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