Vascular side-to-side anastomosis components

Abstract

The present invention provides a side-to-side anastomosis assembly for blood vessels, comprising a pair of anastomosis ring groups and an anastomosis device group, each anastomosis ring group is provided with an anastomosis inner ring and an anastomosis outer ring, the anastomosis outer ring is provided with a locking mechanism for mutually locking with the anastomosis outer ring of another anastomosis ring group; the anastomosis device group is provided with a pusher and a retractor, the pusher is provided with a hollow pusher portion, the retractor is provided with a pull rod and a hook portion, the pull rod can be provided in the hollow of the pusher portion, so as to be suitable for pushing the anastomosis outer ring toward the direction close to the side wall of the blood vessel through the pusher portion, and at the same time pulling the anastomosis inner ring toward the direction away from the side wall of the blood vessel through the hook portion, so that the side wall of the blood vessel is clamped by the anastomosis surfaces of the anastomosis inner ring and the anastomosis outer ring. According to the present invention, the side-to-side anastomosis operation of blood vessels can be realized conveniently and efficiently.

Description

Technical Field

[0001] The invention relates to the field of vascular surgery, and in particular to a vascular side-to-side anastomosis component. Background Art

[0002] In surgical operations, it is often necessary to use vascular anastomosis components to anastomose two blood vessels, which mainly include three methods: end-to-end anastomosis, end-to-side anastomosis, and side-to-side anastomosis. The two blood vessels in the temporary anastomosis state are then sutured, and after the blood vessels grow and connect at the anastomosis site, the anastomosis components are removed or allowed to degrade naturally. Since end-to-end anastomosis has more usage scenarios, there are many innovations in the prior art on end-to-end anastomosis components. However, there are relatively few studies on side-to-side anastomosis components, especially. In fact, since the contour of the vascular side walls is more complex and the operable space between the vascular side walls is narrower, the side-to-side anastomosis of the blood vessels is more difficult to operate. There is no vascular side-to-side anastomosis component product in the prior art that can achieve simple operation and good anastomosis effect. Summary of the invention

[0003] The invention provides a blood vessel side-to-side anastomosis component.

[0004] Specifically, the present invention is achieved through the following technical solutions:

[0005] An embodiment of the present invention provides a blood vessel side-to-side anastomosis assembly for anastomosing the side walls of two blood vessels, comprising:

[0006] A pair of anastomotic ring groups, each anastomotic ring group is configured with an anastomotic inner ring and an anastomotic outer ring, the anastomotic inner ring and the anastomotic outer ring are provided with anastomotic surfaces for mutually clamping the side walls of the blood vessels, the anastomotic inner ring is provided with a first hole, the anastomotic outer ring is provided with a needle corresponding to the position of the first hole, and the anastomotic outer ring is also provided with a locking mechanism for mutually locking with the anastomotic outer ring of another anastomotic ring group;

[0007] The stapler assembly is provided with a pusher and a retractor. The pusher is provided with a hollow pusher portion, and the retractor is provided with a pull rod and a hook portion. The pull rod can be arranged in the hollow of the pusher portion so as to be suitable for pushing the anastomotic outer ring toward the side wall of the blood vessel through the pusher portion, and pulling the anastomotic inner ring toward the direction away from the side wall of the blood vessel through the hook portion, so that the side wall of the blood vessel is clamped by the anastomotic surfaces of the anastomotic inner ring and the anastomotic outer ring, and the needle passes through the side wall of the blood vessel and the first hole in sequence.

[0008] In some embodiments, the anastomotic surfaces of the inner anastomotic ring and the outer anastomotic ring are formed to fit the contour of the side wall of the blood vessel.

[0009] In some embodiments, the anastomotic inner ring is provided with a column on the opposite side of its anastomotic surface, and the hook portion is formed with a second hole, the position of the second hole corresponds to the column, so that when the hook portion pulls the anastomotic inner ring away from the side wall of the blood vessel, the column can be inserted into the second hole of the hook portion.

[0010] In some embodiments, the anastomotic inner ring is provided with an inner ring body and an inner ring platform, wherein the inner ring platform has a smaller diameter than the inner ring body and extends from the inner ring body toward the anastomotic outer ring, so that when the anastomotic surfaces of the anastomotic inner ring and the anastomotic outer ring clamp the side wall of the blood vessel, the inner ring platform can radially limit the anastomotic outer ring.

[0011] In some embodiments, the outer ring body is formed as a ring sheet that matches the contour of the blood vessel side wall, and a side of the ring sheet away from the anastomotic surface is formed with a pair of protrusions and a pair of recesses, and a column is respectively disposed at each protrusion and recess.

[0012] In some embodiments, the locking mechanism of one anastomotic ring group is at least one pair of slide grooves and clamping grooves arranged on the outside of the anastomotic outer ring, and the locking mechanism of another anastomotic ring group is at least one pair of clamping arms and claws arranged on the outside of the anastomotic outer ring. When the side wall of the blood vessel is clamped by the anastomotic surfaces of the anastomotic inner ring and the anastomotic outer ring, the clamping arm can slide along the slide groove and be clamped into the clamping groove through the claw.

[0013] In some embodiments, the pusher is provided with a hollow barrel, and the puller is provided with a guide, and the hollow inner contour of the barrel matches the outer contour of the guide, so that the guide can only move in the hollow of the barrel along the proximal and distal directions.

[0014] In some embodiments, the barrel is at least partially formed with a hollow structure.

[0015] In some embodiments, the retractor is provided with a handle, which is provided at the distal end of the guide portion and extends out of the barrel portion.

[0016] In some embodiments, a groove is formed on the outer side of the anastomotic outer ring, so that when a tool is used to clamp the anastomotic outer ring, the tool can be clamped in the groove, thereby limiting the anastomotic outer ring axially, circumferentially and radially.

[0017] According to the embodiment of the present invention, the side wall of the blood vessel is aligned with the needle, the outer anastomotic ring is pushed tightly by the pushing portion of the pusher, and the inner anastomotic ring is pulled back by the hook portion of the retractor at the same time, so that the inner anastomotic ring and the outer anastomotic ring can be conveniently tightened to each other, so that the needle passes through the side wall of the blood vessel, and the anastomotic surfaces of the inner anastomotic ring and the outer anastomotic ring firmly clamp the side wall of the blood vessel; then, only a pair of anastomotic ring groups need to be docked with each other, so that the locking mechanism locks the pair of anastomotic ring groups with each other, thereby ensuring the sealing between the pair of anastomotic ring groups, and realizing the side-to-side anastomosis operation of the blood vessels conveniently and efficiently.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] Figure 1 is a schematic diagram of the process state of side-to-side anastomosis of blood vessels in one embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of a portion of a vascular side-to-side anastomosis assembly in one embodiment of the present invention;

[0022] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0023] Figure 4 is a schematic diagram of an anastomotic inner ring and an anastomotic outer ring in one embodiment of the present invention;

[0024] Figure 5 is a schematic diagram of another anastomotic inner ring and anastomotic outer ring in one embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of a pusher and a puller in one embodiment of the present invention.

[0026] Reference numerals:

[0027] 10: anastomotic inner ring; 11: first hole; 12: column; 13: inner ring body; 131: convex part; 132: concave part; 14: inner ring platform;

[0028] 20: anastomotic outer ring; 21: needle; 22: locking mechanism; 221: slide groove; 222: clamping groove; 223: clamping arm; 224: clamping claw; 225: groove;

[0029] 30: pusher; 31: pusher portion; 32: cylinder portion;

[0030] 40: retractor; 41: pull rod; 42: hook; 421: second hole; 43: guide; 44: handle. DETAILED DESCRIPTION

[0031] The present invention will now be discussed with reference to several embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present invention, rather than implying any limitation on the scope of the present invention.

[0032] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to"; the terms "embodiment" and "one embodiment" are to be interpreted as "at least one embodiment"; the term "another embodiment" is to be interpreted as "at least one other embodiment"; the terms "first", "second", etc. may refer to different or the same objects; the term "setting" is not limited to direct connection or indirect connection, nor is it limited to a specific connection method. Other explicit and implicit definitions may also be included below.

[0033] In the following description, some specific numerical values ​​or numerical ranges may be involved. It should be understood that these numerical values ​​and numerical ranges are merely exemplary, and they may be helpful in putting the idea of ​​the present invention into practice. However, the description of these examples is not intended to limit the scope of the present invention in any way. According to specific application scenarios and requirements, these numerical values ​​or numerical ranges can be set separately.

[0034] As mentioned above, there is no existing vascular side-to-side anastomosis assembly that is easy to operate and has good anastomosis effect. The vascular side-to-side anastomosis assembly proposed in the embodiment of the present invention at least partially solves the above problems. Figures 1 to 6 The structure and working principle of the blood vessel side-to-side anastomosis assembly according to an exemplary embodiment of the present invention are described below. The blood vessel side-to-side anastomosis assembly according to the exemplary embodiment of the present invention generally comprises a pair of anastomosis ring groups and at least one set of anastomosis device groups, wherein each anastomosis ring group comprises an anastomosis inner ring 10 and an anastomosis outer ring 20, and each anastomosis ring group is used to clamp a blood vessel side wall; the anastomosis device group comprises a pusher 30 and a puller 40, which are used to operate the anastomosis inner ring 10 and the anastomosis outer ring 20 of each anastomosis ring group to clamp the blood vessel side wall. Figure 1 As shown, after each anastomotic ring assembly clamps the side wall of the blood vessel, a pair of anastomotic ring assemblies are butt-jointed with each other and locked with each other using a locking mechanism 22, and a sealing is achieved using the butt-jointed surfaces of the pair of anastomotic ring assemblies, thereby completing the anastomosis operation between the two side walls of the blood vessels.

[0035] like Figure 2 As shown, when operating the anastomotic ring assembly to clamp the side wall of the blood vessel, the anastomotic assembly consisting of a pusher 30 and a retractor 40 is used to achieve simple and efficient operation. Specifically, the pusher 30 has a hollow structure, and the retractor 40 is inserted into the hollow structure of the pusher 30. The pusher 30 is used to push the anastomotic outer ring 20 toward the distal end, and the retractor 40 is used to pull the anastomotic inner ring 10 toward the proximal end, so that the anastomotic surfaces of the anastomotic inner ring 10 and the anastomotic outer ring 20 are close to each other and clamp the side wall of the blood vessel.

[0036] Specifically, each anastomotic ring set includes an anastomotic inner ring 10 and an anastomotic outer ring 20, wherein the anastomotic inner ring 10 is located inside the blood vessel in a clamped state, and the anastomotic outer ring 20 is located outside the blood vessel. In order to enable a pair of anastomotic ring sets to be tightly sealed against each other, a locking mechanism 22 is provided on the outer side of the anastomotic outer ring 20 of each anastomotic ring set, wherein the structure of the locking mechanism 22 of each anastomotic outer ring 20 can be the same, or can be different structures that cooperate with each other. In one embodiment, as Figure 4 As shown, the locking mechanism 22 is formed into a slide groove 221 and a clamping groove 222. The slide groove 221 extends along the axial direction of the anastomotic outer ring 20, and the clamping groove 222 extending radially toward the anastomotic outer ring 20 is formed at the end of the slide groove 221. Figure 5 As shown, the locking mechanism 22 is formed as a clamp arm 223 and a claw 224 on the outside of another anastomotic outer ring 20, the clamp arm 223 extends out of the anastomotic outer ring 20 along the axial direction of the anastomotic outer ring 20, and the end of the clamp arm 223 is provided with a claw 224 extending along the radial direction of the anastomotic outer ring 20. It should be noted that the number and position of the slide grooves 221 and the clamp grooves 222 correspond to the number and position of the clamp arm 223 and the claw 224. In order to achieve stable locking, the number of the slide grooves 221 and the clamp grooves 222 is at least one pair, and accordingly, the number of the clamp arm 223 and the claw 224 is also at least one pair, which are illustratively located on opposite sides of the anastomotic outer ring 20 in the circumferential direction. Align the slide groove 221 with the clamp arm 223 to bring a pair of matching outer rings 20 closer to each other, and move the clamp arm 223 along the slide groove 221 until the claw 224 is inserted into the clamp groove 222. Under the action of the elastic restoring force of the clamp arm 223, the claw 224 is tightly inserted into the clamp groove 222, thereby locking the pair of matching outer rings 20 with each other to ensure the sealing of the matching outer rings 20 abutting against each other.

[0037] In one embodiment, the sides of the anastomotic outer ring 20 and the anastomotic inner ring 10 facing each other are anastomotic surfaces, and at least the contour of the anastomotic surface matches the contour of the blood vessel side wall. When the blood vessel side wall is clamped by the anastomotic surface, it can ensure that the blood vessel side wall is basically free of elastic pulling and can still be maintained in a conventional relaxed state. Exemplarily, in order to make the anastomotic surface match the contour of the blood vessel side wall, the entire anastomotic inner ring 10 can be a ring sheet that matches the contour of the blood vessel side wall, that is, the two sides of the anastomotic inner ring 10 are parallel contour surfaces. In another example, since a pair of anastomotic outer rings 20 need to abut against each other for sealing, it is best to make the abutting surfaces of the anastomotic outer rings 20 be planes, and only the anastomotic surface of the anastomotic outer ring 20 is set to match the contour of the blood vessel side wall.

[0038] In one embodiment, a plurality of first holes 11 and columns 12 are formed on the anastomotic inner ring 10, wherein the first holes 11 are for the needles 21 provided on the anastomotic outer ring 20 to penetrate, and the columns 12 are used to penetrate and cooperate with the second holes 421 of the hook portion 42 of the retractor 40, so as to limit the position of the anastomotic inner ring 10 during the retraction process. Those skilled in the art will appreciate that the columns 12 are not a necessary structure, that is, the clamping operation can also be achieved by directly hooking the side of the anastomotic inner ring 10 with the hook portion 42 of the retractor 40.

[0039] In one embodiment, the number of the columns 12 is at least one, but more columns 12 can improve the limiting effect. Exemplarily, since the anastomotic surface is adapted to the contour of the blood vessel side wall, the side of the anastomotic inner ring 10 away from the anastomotic surface can also be adapted to the anastomotic surface, which is conducive to the manufacture of the anastomotic inner ring 10. Therefore, a pair of convex portions 131 and a pair of concave portions 132 are formed on the side of the anastomotic inner ring 10 away from the anastomotic surface. The positions of the pair of convex portions 131 are substantially 180 degrees opposite to each other, and the positions of the pair of concave portions 132 are also substantially 180 degrees opposite to each other, that is, the convex portions 131 and the concave portions 132 are distributed at 90 degrees. At this time, at least four columns 12 are provided, and the positions of the columns 12 are respectively provided in the convex portion 131 and the concave portion 132 regions. When the hook portion 42 returns to the anastomotic inner ring 10, the force applied by the retractor 40 to the anastomotic inner ring 10 can be more balanced.

[0040] In one embodiment, the anastomotic inner ring 10 is configured as a step structure. Specifically, the step structure is composed of an inner ring body 13 and an inner ring platform 14. The inner ring platform 14 has a smaller diameter than the inner ring body 13 and extends from the inner ring body 13 toward the anastomotic outer ring 20. The outer diameter of the inner ring platform 14 matches the inner diameter of the anastomotic outer ring 20. When the anastomotic surfaces of the anastomotic inner ring 10 and the anastomotic outer ring 20 clamp the side wall of the blood vessel, the inner ring platform 14 can radially limit the anastomotic outer ring 20.

[0041] In one embodiment, needles 21 are provided on the anastomotic surface of the anastomotic outer ring 20. The number of the needles 21 is not limited, but the positions of at least a part of the needles 21 correspond to the first holes 11 of the anastomotic inner ring 10. The side walls of the blood vessels are hooked by the needles 21, and the needles 21 penetrate into the first holes 11 to achieve fixation and positioning between the anastomotic outer ring 20 and the anastomotic inner ring 10.

[0042] The pusher 30 is used to push the anastomotic outer ring 20 toward the distal end. Figure 6As shown, the pusher 30 is provided with a pusher portion 31 and a barrel portion 32. The pusher portion 31 is an annular structure. The end face of the annular structure is used to press against the abutting side of the anastomotic outer ring 20. For example, the end face of the annular structure is flat. The barrel portion 32 is formed with a hollow structure for the retractor 40 to pass through and extend into the anastomotic ring group. In one embodiment, at least a portion of the barrel portion 32 forms a hollow structure. During the clamping operation, the operator cannot see clearly whether the anastomotic inner ring 10 and the anastomotic outer ring 20 are clamped in place. The positional relationship between the retractor 40 and the pusher 30 can be seen through the hollow structure, thereby judging whether the clamping is in place.

[0043] In one embodiment, the retractor 40 is provided with a pull rod 41, a guide portion 43 and a handle 44 from the distal end to the proximal end, respectively. The number and position of the pull rod 41 correspond to the column 12, wherein the pull rod 41 can be set to be longer. When the hook portion 42 at the end of the pull rod 41 is used to clamp the anastomotic inner ring 10 and the anastomotic outer ring 20 into place, the junction structure between the pull rod 41 and the guide portion 43 can be located in the hollow structure area of ​​the barrel 32, so that the clamping status can be judged by the position of the junction structure.

[0044] In one embodiment, the guide portion 43 can be cylindrical or in other shapes, as long as its outer contour matches the inner contour of the barrel 32, thereby ensuring that the guide portion 43 can move freely in the barrel 32 in the distal and proximal directions, and that no radial movement occurs between the pusher 30 and the puller 40, thereby improving the alignment of the clamping process.

[0045] In one embodiment, the handle 44 is disposed at the proximal end of the guide portion 43 and can be configured to be longer and extend from the barrel 32 to facilitate the operator to hold and operate.

[0046] When using the vascular side-to-side anastomosis assembly of the embodiment of the present invention to perform a vascular side-to-side anastomosis operation, first use an anastomosis ring set, sleeve the anastomosis inner ring 10 outside the pull rod 41 of the retractor 40, and place it inside the blood vessel, then sleeve the anastomosis outer ring 20 and the pusher 30 outside the retractor 40 in turn, use the pusher 30 to push the anastomosis outer ring 20 toward the distal end, and at the same time appropriately pull back the anastomosis inner ring 10, so that the blood vessel side wall can be clamped quickly and conveniently. Similarly, after clamping the other anastomosis ring set in place, a pair of anastomosis outer rings 20 are brought close to each other and abutted, and a sealing ring can be designed on the abutting surface to improve the sealing, and a locking mechanism 22 is used to complete a firm locking. Exemplarily, a groove 225 can also be formed on the outer side of the anastomotic outer ring 20, and an additional tool can be used to clamp the anastomotic outer ring 20. The tool can be clamped in the groove 225, thereby limiting the anastomotic outer ring 20 axially, circumferentially and radially, thereby improving the operational convenience of the process of a pair of anastomotic outer rings 20 abutting against each other.

[0047] The description of the embodiments herein and any reference to directions and orientations are only for the convenience of description and are not to be construed as any limitation on the scope of protection of the present invention. The description of the preferred embodiments may involve combinations of features, which may exist independently or in combination, and the present invention is not particularly limited to the preferred embodiments. The scope of the present invention is defined by the claims.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A blood vessel side-to-side anastomosis assembly for anastomosing the side walls of two blood vessels, characterized in that: include: A pair of anastomotic ring groups, each anastomotic ring group is provided with an anastomotic inner ring (10) and an anastomotic outer ring (20), the anastomotic inner ring (10) and the anastomotic outer ring (20) are provided with anastomotic surfaces for mutually clamping the side walls of the blood vessels, the anastomotic inner ring (10) is provided with a first hole (11), the anastomotic outer ring (20) is provided with a needle (21) corresponding to the position of the first hole (11), and the anastomotic outer ring (20) is also provided with a locking mechanism (22) for mutually locking with the anastomotic outer ring (20) of another anastomotic ring group; The stapler assembly is provided with a pusher (30) and a retractor (40), wherein the pusher (30) is provided with a hollow pusher portion (31), and the retractor (40) is provided with a pull rod (41) and a hook portion (42), wherein the pull rod (41) can be arranged in the hollow of the pusher portion (31) so as to be suitable for pushing the anastomotic outer ring (20) toward the side wall of the blood vessel through the pusher portion (31), and at the same time pulling the anastomotic inner ring (10) toward the direction away from the side wall of the blood vessel through the hook portion (42), so that the side wall of the blood vessel is clamped by the anastomotic surfaces of the anastomotic inner ring (10) and the anastomotic outer ring (20), and the needle (21) passes through the side wall of the blood vessel and the first hole (11) in sequence; The anastomotic inner ring (10) is provided with a column (12) on the opposite side of its anastomotic surface, and the hook portion (42) is formed with a second hole (421), the position of the second hole (421) corresponding to the column (12), so that when the hook portion (42) pulls the anastomotic inner ring (10) in a direction away from the side wall of the blood vessel, the column (12) can be inserted into the second hole (421) of the hook portion (42), thereby limiting the position of the anastomotic inner ring (10) during the pulling back process; The pusher (30) is provided with a hollow barrel (32), and the retractor (40) is provided with a guide portion (43). The hollow inner contour of the barrel (32) matches the outer contour of the guide portion (43), so that the guide portion (43) can only move in the hollow of the barrel (32) along the proximal and distal directions.

2. The vascular side-to-side anastomosis assembly according to claim 1, characterized in that: The anastomotic surfaces of the anastomotic inner ring (10) and the anastomotic outer ring (20) are formed to fit the contour of the side wall of the blood vessel.

3. The vascular side-to-side anastomosis assembly according to claim 1, characterized in that: The anastomotic inner ring (10) is provided with an inner ring body (13) and an inner ring platform (14); the inner ring platform (14) has a smaller diameter than the inner ring body (13) and extends from the inner ring body (13) toward the anastomotic outer ring (20), so that when the anastomotic surfaces of the anastomotic inner ring (10) and the anastomotic outer ring (20) clamp the side wall of the blood vessel, the inner ring platform (14) can radially limit the anastomotic outer ring (20).

4. The vascular side-to-side anastomosis assembly according to claim 3, characterized in that: The inner ring body (13) is formed as a ring sheet that matches the contour of the side wall of the blood vessel. A pair of convex parts (131) and a pair of concave parts (132) are formed on the side of the ring sheet away from the anastomotic surface. The column (12) is respectively arranged at each convex part (131) and concave part (132).

5. The vascular side-to-side anastomosis assembly according to claim 1, characterized in that: The locking mechanism (22) of one anastomotic ring group is at least one pair of slide grooves (221) and clamping grooves (222) arranged on the outside of the anastomotic outer ring (20), and the locking mechanism (22) of the other anastomotic ring group is at least one pair of clamping arms (223) and clamping claws (224) arranged on the outside of the anastomotic outer ring (20). When the side wall of the blood vessel is clamped by the anastomotic surfaces of the anastomotic inner ring (10) and the anastomotic outer ring (20), the clamping arms (223) can slide along the slide grooves (221) and be clamped into the clamping grooves (222) through the clamping claws (224).

6. The vascular side-to-side anastomosis assembly according to claim 1, characterized in that: The barrel portion (32) is at least partially formed with a hollow structure.

7. The vascular side-to-side anastomosis assembly according to claim 1, characterized in that: The retractor (40) is provided with a handle (44), which is arranged at the distal end of the guide portion (43) and extends out of the barrel portion (32).

8. The vascular side-to-side anastomosis assembly according to claim 1, characterized in that: A groove (225) is formed on the outer side of the anastomotic outer ring (20) so that when a tool is used to clamp the anastomotic outer ring (20), the tool can be clamped in the groove (225), thereby limiting the anastomotic outer ring (20) in the axial, circumferential and radial directions.

Images