TWI739118B - Support ring for aortic anastomosis - Google Patents

Abstract

A support ring for aortic anastomosis including an aortic graft and a support ring is provided. Support rings are disposed at both ends of the artificial blood vessel and sutured with the graft. The support ring is arc-shaped, a surface of the support ring is provided with a plurality of elliptical first through holes, and an inner circumference of the first through hole is provided with a first chamfer. The device is used for suturing blood vessels of the ascending aorta and the aortic arch and so on. The support ring is in the graft, the graft is in the aorta, and finally they are tied and fixed on the outside of the aorta by a bandage. After the anastomosis, a curvature of a curved aorta itself can be formed and a blood leakage can be effectively avoided, and the anastomosis time is significantly reduced.

Description

Support ring for aortic anastomosis

The invention relates to a blood vessel suture device, in particular to a support ring for an aortic anastomosis.

The existing rings used for blood vessel connection generally adopt a straight cylindrical structure. In actual application, the blood flow in the human arteries is relatively fast, and the shape of the aortic arch of the human body can easily cause the connecting ring of the straight cylindrical structure to be in the blood vessel. Shaking does not allow a good combination of the aortic arch position, and it is prone to blood leakage after strapping. In addition, due to the small operating space during surgery, the straight cylindrical structure of the connecting ring is not conducive to grasping and fixing.

The problem to be solved by the present invention is a support ring for aortic anastomosis that can suture blood vessels at positions such as the ascending aorta, aortic arch, etc., and can effectively avoid blood leakage.

The present invention provides a support ring for anastomosis of the aorta, which includes an artificial blood vessel and a support ring. The support ring is arranged at both ends of the artificial blood vessel and is sutured to the artificial blood vessel. The surface of the ring is provided with a plurality of elliptical first through holes, and the inner circumference of the first through holes is provided with a first chamfer.

Further, the distance between the cross-sections when the first chamfer is parallel to the axial direction of the support ring to the distance between the cross-sections when the first chamfer is perpendicular to the axial direction of the support ring slowing shrieking.

Further, both ends of the outer wall of the support ring are provided with a circle of first protrusions, and the outer circumference of the first protrusions is provided with a second chamfer.

Further, the first through holes are staggered and evenly distributed.

Further, it also includes a sleeve, the sleeve is cylindrical and the inside is hollow, the surface of the sleeve is provided with a plurality of elliptical second through holes evenly distributed and interlaced with each other, and in the second through hole A circle of third chamfers is provided around the circumference, and both ends of the sleeve are provided with a circle of second protrusions. When the third chamfer is perpendicular to the axial direction of the support ring, the distance between the cross-sections gradually decreases.

Further, the outer periphery of the second protrusion is provided with a fourth chamfer.

Further, both the sleeve and the support ring are made of nickel-titanium alloy materials.

Further, the outer wall of the support ring is provided with several marking lines evenly distributed.

Further, it also includes a pattern arranged on the outer periphery of the support ring, the pattern is a plurality of annular grooves evenly distributed on the outer periphery of the support ring, the surface of the pattern is provided with a plurality of thorn-like protrusions, the thorns The ridges are distributed in a staggered manner, and they also include straps that are used to tie the lines of the support ring and the joints of the artificial blood vessels,

Further, the surface of the artificial blood vessel is provided with several artificial branch blood vessels, and the artificial branch blood vessels are distributed along the radial direction of the artificial blood vessel.

The beneficial effects of the present invention are:

The support ring for anastomosis of the aorta of the present invention, because the support ring will come into contact with blood in a large amount during the process of suturing arterial vessels, the surface of the support ring is very slippery, and it is not easy to grasp and fix, which reduces the cost of artificial blood vessel suture. Time and the effect of suture, and through the effect of the oval-shaped first through hole and the first chamfer on the support ring, it is convenient to guide the needle for suture, when the needle of the needle for suture touches the first In the case of a chamfer, since the first chamfer is relatively smooth, the needle can be moved along the first chamfer, which improves the efficiency of stitching. Moreover, because the first through hole is oval and passes through the first through hole The fit of the hole and the first chamfer can reduce the interference to normal blood flow and improve the stability of the support ring. In addition, when used for suturing the position of the aortic arch or ascending aorta, the support ring is curved. , It can be in close contact with the inner wall of the artificial blood vessel, and when it is tied to the blood vessel of the human body, it can also effectively reduce the movement of the support ring inside the blood vessel. The thorn-like protrusion can penetrate the artificial blood vessel and the human body’s own aorta, and the polyester fiber material band with a certain thickness bury the tip of the thorn-like protrusion, which can fully fix the three-layer structure and prevent the aorta from tearing and slipping off. Make its mechanical properties meet the requirements of strapping.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only preferred embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative labor.

1‧‧‧Artificial blood vessel

2‧‧‧Support ring

3‧‧‧First through hole

4‧‧‧First chamfer

5‧‧‧First bump

6‧‧‧Package

7‧‧‧Second through hole

8‧‧‧Second chamfer

9‧‧‧third chamfer

10‧‧‧Second bump

11‧‧‧Fourth chamfer

12‧‧‧Marking line

13‧‧‧Texture

14‧‧‧Spiny bump

15‧‧‧Tie

16‧‧‧Artificial branch blood vessel

Fig. 1 is a schematic diagram of the cooperation between the support ring and the artificial blood vessel of the support ring for an aortic anastomosis according to the first embodiment of the present invention; Fig. 2 is a schematic diagram of the overall structure of the support ring for an aortic anastomosis according to the first embodiment of the present invention; Fig. 3 is the present invention A schematic diagram of the first chamfer structure in the first through hole of the support ring for aortic anastomosis according to the first embodiment; FIG. 4 is an assembly diagram of the support ring and the artificial blood vessel of the support ring for the aortic anastomosis according to the first embodiment of the present invention; FIG. 6 is a schematic diagram of the structure of the third chamfer in the second through hole of the support ring for an aortic anastomosis according to the first embodiment of the present invention; FIG. 7 It is a cross-sectional view of the support ring of the support ring for an aortic anastomosis according to the first embodiment of the present invention; FIG. 8 is a cross-sectional view of the support ring kit for the aortic anastomosis according to the first embodiment of the present invention; FIG. 9 is a second embodiment of the present invention A schematic diagram of the cooperation between the support ring of the support ring for aortic anastomosis and the artificial blood vessel; FIG. 10 is a partial enlarged schematic view of the support ring for aortic anastomosis of the second embodiment of the present invention at FIG. 9A.

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.

Example one

1 to 8, the present invention provides a support ring for an aortic anastomosis, including an artificial blood vessel 1 and a support ring 2. The support ring 2 is arranged at both ends of the artificial blood vessel 1 and is sutured to the artificial blood vessel 1 , The support ring 2 is arc-shaped, the surface of the support ring 2 is provided with a number of elliptical first through holes 3, and the inner circumference of the first through holes 3 is provided with a first chamfer 4, because In the process of suturing arterial blood vessels, the support ring 2 will come into contact with blood in a large amount, resulting in a very slippery surface of the support ring 2 and difficult to hold and fix, reducing the time and effect of the artificial blood vessel 1 suturing. The function of the oval-shaped first through hole 3 and the first chamfer 4 on the support ring 2 is convenient to guide the needle for suture. When the needle of the needle for suture touches the first chamfer 4, The first chamfer 4 is relatively smooth, which enables the needle to move along the first chamfer 4 and improves the efficiency of suture. In addition, the needle for suture can pass through the first through hole 3 on the support ring 2 and simultaneously Through the artificial blood vessel 1 and the blood vessel wall of the human body, the three can be fixed. When the band is tied from the outside of the aorta, the alignment is simple and accurate, and because the first through hole 3 is elliptical and passes through the first through hole 3 The cooperation of the hole 3 and the first chamfer 4 can reduce the interference to normal blood flow and improve the stability of the support ring 2. In addition, when used for suturing the position of the aortic arch or the ascending aorta, the support ring 2 is in an arc shape and can be in close contact with the inner wall of the artificial blood vessel 1. When it is tied to the blood vessel of the human body, it can also effectively reduce the movement of the support ring 2 inside the blood vessel, which can save a lot of suture time. Avoid postoperative bleeding caused by the large number of stitches.

Specifically, the first chamfer 4 is the distance between the cross sections when the axial direction of the support ring 2 is parallel to the cross section when the first chamfer 4 is perpendicular to the axial direction of the support ring 2 The distance between the first through hole 3 is gradually reduced, 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, passing through the 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 prevent the blood flow from generating vortex phenomenon at the position of the first through hole 3 and avoid the first through hole 3 A thrombus occurred at the position of the through hole 3.

Specifically, both ends of the outer wall of the support ring 2 are provided with a ring of first protrusions 5, and the outer circumference of the first protrusions 5 is provided with a second chamfer 8, through which the first protrusions 5 can facilitate the operation When binding the artificial blood vessel 1 and the blood vessel of the human body, it can avoid the relative sliding between the artificial blood vessel 1 and the blood vessel of the human body, which can effectively reduce the occurrence of blood leakage, and can also prevent the thread used for binding from slipping off. Phenomenon.

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

Specifically, it further includes a sleeve 6, which has a cylindrical shape and a hollow inside. The surface of the sleeve 6 is provided with a plurality of elliptical second through holes 7 evenly distributed and interlaced with each other, and the first A circle of third chamfers 9 is provided on the inner circumference of the two through holes 7, and both ends of the sleeve 6 are provided with a circle of second protrusions 10. When the third chamfers 9 are parallel to the axial direction of the sleeve 6 The distance between the cross-sections of the third chamfer 9 and the distance between the cross-sections when the axial direction of the sleeve 6 is perpendicular to each other gradually decreases. It will come into contact with a large amount of blood, which will cause the surface of the sleeve 6 to be very slippery and difficult to fix, which is not conducive to the suture of the artificial blood vessel 1 and greatly reduces the suture time and the effect of the artificial blood vessel 1. The role of the second through hole 7 and the third chamfer 9 is convenient to guide the needle for suture. When the needle of the needle for suture touches the third chamfer 9, since the third chamfer 9 is relatively smooth, The needle can be moved along the third chamfer 9 to improve the efficiency of suturing. The needle used for suturing can pass through the second through hole 7 on the set 6 and penetrate the artificial blood vessel 1 and the blood vessel wall of the human body at the same time. It can be fixed. When the brachiocephalic artery is banded from the outside, it is simple and accurate, and because the second through hole 7 is elliptical, and through the cooperation of the second through hole 7 and the third chamfer 9, It can reduce the impact of blood flow on the sleeve 6 and improve the stability of the sleeve 6. In addition, when used for suturing the brachiocephalic artery, it can be in close contact with the inner wall of the artificial blood vessel 1. When the blood vessels are tied together, it can also effectively reduce the movement of the sleeve 6 inside the blood vessel. The long axis of the second through hole 7 is parallel to the axis of the sleeve 6, and the short axis of the second through hole 7 is parallel to the sleeve. The 6-axis is vertical. 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 also prevent blood flow from being generated at the position of the second through hole 7 The vortex phenomenon and the prevention of thrombosis in the position of the second through hole 7 can facilitate the binding of the artificial blood vessel 1 and the blood vessel of the human body during the operation by the second protrusion 10, avoiding the artificial blood vessel 1 and the blood vessel of the human body. Relative sliding occurs between them, which can effectively reduce the occurrence of blood leakage, and can also prevent the thread used for binding from slipping off.

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

Specifically, both the sleeve 6 and the support ring 2 are made of nickel-titanium alloy materials, which makes the device safer and more durable in use, and has better compatibility with the human body.

Specifically, the outer wall of the support ring 2 is provided with a number of evenly distributed marking lines 12, through which the marking lines 12 can enable the medical staff to place the support ring 2 at an accurate angle on the aortic arch or the ascending aorta during the operation. At the position of the artery, the support ring 2 can be closely attached to the aortic arch or the ascending aortic vessel through the artificial blood vessel 1 as much as possible.

Example two

Referring to Figures 9 to 10, the difference between this embodiment and the first embodiment is that it also includes a pattern 13 provided on the outer periphery of the support ring 2. The pattern 13 is a plurality of annular grooves evenly distributed on the support ring 2. The surface of the pattern 13 is provided with a number of thorn-like protrusions 14, the thorn-like protrusions 14 are staggered, and also includes a strap 15 that is used to tie to the support ring 2 At the junction of the vein 13 and the artificial blood vessel 1, the strap 15 can be made of a polyester fiber material with a certain thickness, so that its mechanical properties can meet the binding requirements, and the thorn-like protrusion 14 can penetrate the artificial blood vessel 1 and the human body’s own aorta and the strap 15 can fully fix the three-layer structure, prevent the aorta from tearing and slipping off, and can avoid the phenomenon of relative slippage between the artificial blood vessel 1 and the blood vessels of the human body, The lines 13 on the surface of the support ring 2 can effectively prevent blood leakage, and the strap 15 can also prevent the thorn-like protrusions 14 from puncturing surrounding tissues.

Specifically, the surface of the artificial blood vessel 1 is provided with a number of artificial branch blood vessels 16 which are distributed along the radial direction of the artificial blood vessel 1, so that the distribution area of the artificial branch blood vessel 16 is shortened and the increase is saved. The anastomosis space between the aorta and the aortic arch is conducive to the anastomosis work, leaving enough space for the design of the support ring 2, and an anchoring area with a sufficient length for placing the aortic stent can also be reserved in the subsequent operation.

The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the present invention. Within the scope of protection.

1‧‧‧Artificial blood vessel

2‧‧‧Support ring

3‧‧‧First through hole

4‧‧‧First chamfer

5‧‧‧First bump

8‧‧‧Second chamfer

12‧‧‧Marking line

Claims (10)

A support ring for an 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 surface of the support ring is provided with a number of elliptical second A through hole, the inner circumference of the first through hole is provided with a circle of first chamfers, and is characterized in that the support ring is arc-shaped. The support ring for aortic anastomosis according to claim 1, wherein the first chamfer is along the distance between the cross-sections when the axial direction of the support ring is parallel to the first chamfer along the When the axial direction of the support ring is perpendicular, the distance between the cross-sections gradually decreases. The support ring for an aortic anastomosis according to claim 1, wherein both ends of the outer wall of the support ring are provided with a ring of first protrusions, and the outer circumference of the first protrusions is provided with a second chamfer. The support ring for aortic anastomosis according to claim 1, wherein the first through holes are staggered and evenly distributed. The support ring for anastomosis of the aorta according to claim 1, which further comprises a sleeve, the sleeve is cylindrical and the inside is hollow, and the surface of the sleeve is provided with a number of elliptical shapes that are evenly distributed and interlaced with each other The second through hole is provided with a circle of third chamfers on the inner circumference of the second through hole, both ends of the sleeve are provided with a circle of second protrusions, and the third chamfer is along the axis of the support ring The distance between the cross-sections when the directions are parallel to the distance between the cross-sections when the third chamfer is perpendicular to the axial direction of the support ring gradually decreases. The support ring for anastomosis of the aorta according to claim 5, wherein the outer periphery of the second protrusion is provided with a fourth chamfer. The support ring for aortic anastomosis according to claim 5, wherein the sleeve and the support ring are both made of nickel-titanium alloy materials. The support ring for aortic anastomosis according to claim 5, wherein the outer wall of the support ring is provided with a number of marking lines evenly distributed. The support ring for anastomosis of the aorta according to claim 1, further comprising a pattern provided on the outer periphery of the support ring, the pattern being a plurality of annular grooves evenly distributed on the outer periphery of the support ring, the pattern The surface is provided with a number of thorn-like protrusions, the thorn-like protrusions are distributed in a staggered manner, and also include a strap, the strap is used to tie the line of the support ring and the joint of the artificial blood vessel. The support ring for anastomosis of the aorta according to claim 1, wherein 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.

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