CN117481727B - Vascular anastomosis components - Google Patents

Abstract

The present invention provides a vascular anastomosis assembly, which includes a pair of anastomosis rings and a pair of fixators. Each anastomosis ring has a ring body. The ring body is formed with an opening along the circumferential direction. Each fixator is formed with a fixation part to fit the anastomosis ring. The fixing part cooperates with the annular body of the anastomotic ring, so that the mating sides of the pair of anastomotic rings are relatively assembled through the pin and the socket while the anastomotic ring maintains a circumferential limit relative to the fixator. According to the present invention, after the blood vessel ends grow and heal, the anastomotic ring can be taken out from the blood vessel only through the opening, and since the opening angles of the pair of anastomotic rings can be designed to be staggered, the ends of the two blood vessels can be even at the opening. It can also remain tight, affecting the convenience and effectiveness of vascular anastomosis.

Description

Vascular Anastomosis Components

Technical field

The present invention relates to the field of medical devices, and in particular to a vascular anastomosis component.

Background technique

Vascular anastomosis surgery is used to anastomose the ends of two blood vessels. During the joining process, a pair of anastomotic rings are used to fix the ends of the two blood vessels respectively. When the pair of anastomotic rings are anastomosed, the ends of the two blood vessels are tightly pressed and the skin wound is sutured. Generally, the anastomotic rings are not removed, so that foreign matter always exists at the vascular anastomosis. Especially when the vascular anastomosis is close to the epidermis, there is a greater risk. In addition, with the current design of anastomotic rings, if the anastomotic rings are to be removed, the anastomotic rings need to be destroyed, which can easily damage the blood vessels. The existing technology has also tried to improve the removal method of the anastomotic ring to avoid damaging the blood vessels during the removal process, but there are still problems of complex structure or inconvenient operation.

Summary of the invention

The invention provides a blood vessel anastomosis component.

Specifically, the present invention is realized through the following technical solutions:

An embodiment of the present invention provides a blood vessel anastomosis component for anastomosing the ends of two blood vessels, including:

A pair of anastomotic rings, each of the anastomotic rings has a ring body, the mating side of the ring body is formed with pins and insertion holes distributed along the circumferential direction of the ring body, and the ring body is formed with openings along the circumferential direction;

A pair of fixators, each of which is formed with a fixing portion, suitable for cooperating with the ring body of the anastomotic ring through the fixing portion, so that when the anastomotic ring is kept circumferentially limited relative to the fixator, the matching sides of the pair of anastomotic rings are relatively assembled through the pin and the hole.

In some embodiments, the ring body includes: a base ring; and a mating ring formed on a mating side of the base ring, the mating ring having an outer diameter smaller than the base ring.

In some embodiments, a pair of grooves are formed on the mating side of the base ring, each of the grooves has a vertical wall close to the annular center of the base ring; each of the fixers includes a pair of fixing arms and a connecting arm connected to the root of the fixing arms, and the pair of fixing arms are respectively provided with a pair of parallel extending fixing platforms on the opposite sides of each other, and a fixing groove is formed between the pair of parallel extending fixing platforms, and the fixing portion is constituted by the fixing platform and the fixing groove, so as to be suitable for the fixing platform to cooperate with the vertical wall, so that the anastomotic ring maintains a circumferential limited state relative to the fixer.

In some embodiments, each of the grooves forms a thinned portion of the base ring, adapted for the thinned portion to mate with the retaining groove to retain the anastomotic ring relative to the retainer. Axial limit state.

In some embodiments, the mating sides of the pair of anastomotic rings are assembled relative to each other through the pin and the socket while the anastomosis ring is circumferentially limited in at least two positions relative to the fixator. .

In some embodiments, the ring body is formed with a concave hole at the open end, and the concave hole is used to cooperate with the protruding column of the spreader.

In some embodiments, it also includes: a spreader, the distal end of the spreader is provided with a pair of mutually separable contact plates, and the pair of contact plates are respectively provided with protrusions on the sides away from each other.

In some embodiments, the spreader includes a pair of bodies composed of a front part and a handle part, the pair of bodies are pivotally connected between the front part and the handle part through a pin, and the contact plate Set at the front end of the front part.

In some embodiments, the ring body has an elastic deformation space, so that the opening gap under the maximum elastic deformation state of the ring body is greater than the bilateral wall thickness of the blood vessel.

In some embodiments, when the mating sides of the pair of anastomosis rings are relatively assembled through the pins and sockets, the openings of the pair of anastomosis rings are circumferentially offset from each other relative to the ring body. 180 degree.

Through this embodiment, openings are formed on the ring bodies of a pair of anastomotic rings along the circumferential direction respectively, and a pair of fixers are used to keep the mating sides of the anastomotic rings opposite to each other. The fixing parts of the fixers can make the anastomotic rings maintain circumferential limitation relative to the fixers, so that the openings of the pair of anastomotic rings can be stabilized in a state of being staggered at an angle along the circumferential direction. When the blood vessel ends grow and heal well, the anastomotic rings can be removed from the blood vessels only through the openings. Moreover, because the opening angles of the pair of anastomotic rings can be designed to be staggered, the two blood vessel ends can maintain a tightly pressed state even at the openings, which affects the convenience and effect of the vascular anastomosis.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit the application.

Description of drawings

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

Figure 1 is a schematic diagram of a vascular anastomosis component in an embodiment of the present invention;

Figure 2 is a schematic diagram of an anastomotic ring in an embodiment of the present invention;

Figure 3 is a schematic diagram of the cooperation of a pair of anastomotic rings in an embodiment of the present invention;

FIG4 is a schematic diagram of a fixture in one embodiment of the present invention;

Figure 5 is a schematic diagram of a spreader in an embodiment of the present invention.

Reference signs:

10: anastomotic ring; 11: ring body; 111: base ring; 112: matching ring; 12: opening; 13: groove; 131: vertical wall; 132: thinning portion; 14: concave hole; 15: insertion pin; 16: insertion hole;

20: Fixer; 21: Connecting arm; 22: Fixed arm; 221: Fixed table; 222: Fixed slot;

30: spreader; 31: handle; 32: front; 33: pin; 34: touch plate; 341: boss.

Detailed ways

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.

As used herein, the term "comprises" and variations thereof are to be read as an open-ended term meaning "including, but not limited to"; the terms "embodiment" and "one embodiment" are to be read as "at least one embodiment"; the term "another embodiment" is to be read as "at least one other embodiment"; the terms "first", "second", etc. may refer to different or the same object; the term "arrangement" does not It is limited to direct connection or indirect connection, and it is not limited to specific connection methods. Other explicit and implicit definitions may be included below.

Some specific numerical values or numerical ranges may be involved in the following description. It should be understood that these numerical values and numerical ranges are merely exemplary, which may be advantageous in putting the idea of the invention into practice. However, the description of these examples is not intended to limit the scope of the invention in any way. According to specific application scenarios and requirements, these values or value ranges can be set separately.

As mentioned above, the existing technology attempts to improve the disassembly method of the anastomotic ring 10 to avoid damaging blood vessels during the disassembly process. However, the structure of the anastomotic ring 10 is complex, and the installation and removal of the anastomotic ring 10 are inconvenient. The vascular anastomosis component of the embodiment of the present invention facilitates the removal of the anastomotic ring 10 from the blood vessel after the end of the blood vessel has grown and healed, and the anastomotic ring 10 has a simple structure.

The structure and working principle of the vascular anastomosis component according to the embodiment of the present invention will be described in detail below based on Figures 1-5. As shown in Figure 1, the vascular anastomosis assembly of the embodiment of the present invention is composed of a pair of anastomotic rings 10, a pair of fixators 20 and a spreader 30. The pair of anastomotic rings 10 are used to hang two sections of blood vessels respectively. The ends of the two blood vessels are clamped and fixed. A pair of fixators 20 are used to fix a pair of anastomotic rings 10 to maintain them in the desired installation posture. The spreaders 30 are used to spread the anastomotic rings 10. The opening 12 facilitates passage of blood vessels through the opening 12 .

The anastomotic ring 10 in the embodiment of the present invention is designed with an opening 12 to facilitate blood vessels to pass through the opening 12. The structure of a pair of anastomotic rings 10 can be the same or different, as long as each anastomotic ring 10 has an anastomotic structure on the mating side. and circumferential opening 12. In one embodiment, as shown in Figure 2, the anastomotic ring 10 is mainly composed of a ring body 11. The ring body 11 has a mating side that mates with another anastomotic ring 10, and a non-mating side opposite to the mating side. The ring body 11 A pin 15 and a socket 16 are provided on the mating side, and a pin 15 and a socket 16 are also provided on the mating side of the other anastomosis ring 10. The pins 15 and the socket 16 of a pair of anastomosis rings 10 are along the ring body. 11 are circumferentially arranged and corresponding to each other, so that the pins 15 and the sockets 16 of a pair of anastomotic rings 10 can be inserted into each other, so that a pair of anastomotic rings 10 can be firmly assembled with each other.

The ring body 11 extends in the circumferential direction around the center line to form a ring. It is proposed that the extending direction along the center line is the axial direction, and the extending direction along the ring body 11 is the circumferential direction.

In one embodiment, the ring body 11 is stepped in the axial direction to facilitate installation with the retainer 20. Specifically, the ring body 11 is formed into a base ring 111 and a mating ring 112 in the axial direction. The mating ring 112 is located on the mating side. , the base ring 111 is located on the non-fitting side, and the outer diameter of the fitting ring 112 is smaller than the outer diameter of the base ring 111, thereby forming an annular step on the outer diameter of the ring body 11, and the fixed part of the retainer 20 described below can be engaged in this annular step. on the steps.

In one embodiment, the base ring 111 is formed with a pair of grooves 13 on the mating side. Each groove 13 forms a vertical wall 131 close to the center of the base ring 111. The provision of the grooves 13 is equivalent to forming a shaft on the base ring 111. The thinned portion 132 in the direction, the vertical wall 131 and the thinned portion 132 are all used to engage with the fixing portion of the retainer 20 described below.

In one embodiment, the ring body 11 is formed with an opening 12 along the circumferential direction, so that the ring body 11 is in a non-closed shape. The opening 12 is used for blood vessels to pass through. For example, the circumferential gap size of the opening 12 may be larger than the diameter of the blood vessel. The thickness of the double-layer tube wall can also be determined by the elasticity of the ring body 11, and the user can open the opening 12 with bare hands or tools, thereby ensuring that the gap in the opened opening 12 is greater than the double-layer wall thickness of the blood vessel.

Since the ring body 11 is formed with an opening 12 , during the installation of the anastomotic ring 10 , it is easy for the openings 12 of a pair of anastomotic rings 10 to completely or partially overlap in the circumferential direction. In this case, the ends of the two blood vessels are in the opening 12 There is no contact with the ring bodies 11 of the pair of anastomotic rings 10, and the ends of the two blood vessels at the opening 12 are not compressed, resulting in poor local growth and healing of the blood vessel ends. In order to solve this problem, the present invention designs a fixator 20, through which the anastomotic ring 10 can be fixed and the circumferential position of the anastomotic ring 10 remains unchanged, as shown in Figure 3, thereby placing a pair of anastomotic rings 10 in The openings 12 are installed together in a staggered state so that the ends of the two blood vessels at each opening 12 abut against at least one annular body 11 , thus avoiding the above problems to a large extent.

The vascular anastomosis assembly of the embodiment of the present invention includes a pair of fixators 20, respectively used to fix a pair of anastomotic rings 10. Each fixator 20 is formed with a fixing part, and the fixation part cooperates with the ring body 11 of the anastomotic ring 10 to achieve anastomosis. Ring 10 circumferential limiter. In one embodiment, as shown in FIG. 4 , each holder 20 is U-shaped as a whole, including a pair of fixed arms 22 and a connecting arm 21 connected to the roots of the pair of fixed arms 22 . Inside each fixed arm 22 All are provided with fixed parts. Specifically, the fixing part is composed of a fixing platform 221 and a fixing groove 222. The fixing groove 222 is recessed on the fixed arm 22, and the protruding structures on both sides of the recess constitute the fixing platform 221, into which the thinned part 132 of the ring body 11 can be inserted. In the fixing groove 222, the fixing platform 221 clamps and limits the anastomotic ring 10 in the axial direction.

In one embodiment, a pair of fixing platforms 221 are formed to extend in parallel on opposite sides of each other, so that the fixing platforms 221 form flat surfaces on opposite sides of each other, which are used to cooperate with the vertical wall 131 of the ring body 11. Since the vertical wall 131 of the ring body 11 abuts against the surface of the fixing platform 221, the rotation displacement of the ring body 11 in the circumferential direction is limited, thereby positioning the circumferential angle of the opening 12. Using the fixture 20 of this structure, the thinned portion 132 of the ring body 11 is inserted into the fixing groove 222 from the U-shaped opening of the fixture 20. It can be understood that the insertion direction of the thinned portion 132 of the ring body 11 into the fixing groove 222 can be selected into two, so that two angles of the opening 12 of the ring body 11 can be limited, which is more convenient to use.

When using the spreader 30 to expand the gap in the opening 12, the contact plates 34 of the spreader 30 can be inserted into the opening 12, and the pair of contact plates 34 can be operated to move away from each other, thereby expanding the distance between the two ends of the opening 12. In one embodiment, as shown in FIG. 5 , the spreader 30 includes a pair of bodies and a touch plate 34 disposed at the distal end of the body. Each body includes a front portion 32 and a handle 31 . The front portion 32 is used to provide a touch panel. The plates 34 are separated to provide sufficient force arms, and the handle 31 is used for the user to hold and operate conveniently. A pin 33 is provided between the front part 32 and the handle 31 to pivotally connect the pair of bodies.

When the spreader 30 expands the gap between the opening 12 and the contact plate 34 and the opening 12 end, the contact plate 34 and the opening 12 end are prone to slipping. It is necessary to provide a mutually positioned matching structure between the contact plate 34 and the opening 12 end. In one embodiment, as shown in Figures 2 and 5, a recessed hole 14 is formed at the opening 12 end of the ring body 11, and protruding posts 341 are provided on the sides of the contact plates 34 away from each other. The protruding posts 341 can be embedded in the recessed hole 14 to avoid contact. The plate 34 has slipped away from the opening 12 end.

According to the blood vessel anastomosis component according to the embodiment of the present invention, the blood vessel end anastomosis is performed specifically through the following steps:

S1, fix the two blood vessel ends with a pair of anastomotic rings 10 respectively. Specifically, the blood vessel is passed through the anastomotic ring 10 in the axial direction, and the end of the blood vessel is everted, so that the insertion needle 15 passes through the everted part of the end of the blood vessel to hang the blood vessel.

S2, insert a pair of anastomotic rings 10 into the fixator 20 . Specifically, according to the needs of use, different angular positions of the thinned portion 132 of the anastomotic ring 10 and the opening 12 are designed and manufactured, so that after the fixator 20 is inserted, different angular positions of the opening 12 can be obtained.

S3, align the pair of fixators 20 with each other, insert the pins 15 and the insertion holes 16 of the pair of anastomotic rings 10 into each other, so as to clamp the everted parts of the two blood vessel ends between the pair of ring bodies 11. In this state, the positions of the openings 12 of the pair of ring bodies 11 are staggered, ensuring that the everted parts of the two blood vessel ends can be basically pressed and fitted in the entire circumference. In one embodiment, the two openings 12 are offset from each other by 180 degrees. The farther the distance between the two openings 12, the smaller the impact on the tight fit of the everted area.

S4, after a period of time, the ends of the two blood vessels grow and heal each other.

S5, after the ends of the two blood vessels grow and heal with each other, the pair of anastomotic rings 10 are split, and each anastomotic ring 10 is taken out from the blood vessel through the opening 12, thereby completing the entire blood vessel suturing operation.

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

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 shall be included in the protection scope of the present invention. within.

Claims (9)

1. A vascular anastomosis assembly for anastomosis of two vessel ends to one another, comprising:

a pair of anastomotic rings (10), each anastomotic ring (10) having a ring body (11), wherein pins (15) and sockets (16) distributed along the circumferential direction of the ring body are formed on the mating side of the ring body (11), and openings (12) are formed on the ring body (11) along the circumferential direction, and the ring body (11) has an elastic deformation space so that the gap of the openings (12) in the maximum elastic deformation state of the ring body (11) is larger than the double-side wall thickness of a blood vessel;

a pair of retainers (20), each retainer (20) being formed with a fixing portion adapted to be fitted with a ring body (11) of the anastomotic ring by the fixing portion so that the fitted sides of the pair of anastomotic rings (10) are fitted with respect to each other by the pins (15) and the sockets (16) in a state in which the anastomotic ring (10) is held circumferentially limited with respect to the retainer (20), while the openings (12) of the pair of anastomotic rings (10) are offset from each other by an angle with respect to the circumferential direction of the ring body (11) so as not to overlap, such that two blood vessel ends at each opening (12) are abutted against at least one ring body (11);

a spreader (30) for spreading the opening (12) of the anastomotic ring (10) for facilitating the passage of blood vessels from the opening (12).

2. Vascular anastomosis assembly according to claim 1, characterized in that the ring body (11) comprises: a base ring (111); and a fitting ring (112) formed on a fitting side of the base ring (111), the fitting ring (112) having an outer diameter smaller than that of the base ring (111).

3. Vascular anastomosis assembly according to claim 2, wherein the mating side of the base ring (111) is formed with a pair of grooves (13), each groove (13) having a vertical wall (131) close to the annular centre of the base ring (111); each fixer (20) comprises a pair of fixing arms (22) and a connecting arm (21) connected to the root of the fixing arm (22), a pair of fixing tables (221) extending in parallel are respectively arranged on the opposite sides of the pair of fixing arms (22), fixing grooves (222) are formed between the pair of fixing tables (221) extending in parallel, and the fixing parts are formed by the fixing tables (221) and the fixing grooves (222) so as to be suitable for the fixing tables (221) to be matched with the vertical walls (131), so that the anastomotic ring (10) is kept in a circumferential limiting state relative to the fixer (20).

4. A vascular anastomosis assembly according to claim 3, wherein each of said grooves (13) forms a thinned portion (132) of said base ring (111) adapted to cooperate with said fixation grooves (222) to retain said anastomosis ring (10) in an axially restrained condition relative to said anchor (20).

5. Vascular anastomosis assembly according to claim 1, wherein the anastomotic rings (10) are held in a circumferentially limited condition with respect to the holder (20) in at least two positions, the mating sides of the pair of anastomotic rings (10) being assembled in opposition by the pins (15) and sockets (16).

6. Vascular anastomosis assembly according to claim 1, characterized in that the distal end of the spreader (30) is provided with a pair of mutually separable contact plates (34), the sides of the pair of contact plates (34) facing away from each other being provided with respective studs (341).

7. Vascular anastomosis assembly according to claim 6, characterized in that the ring body (11) is formed with a recess (14) at the end of the opening (12), the recess (14) being intended to cooperate with a projection (341) of a spreader (30).

8. Vascular anastomosis assembly according to claim 6, wherein the distractor (30) comprises a pair of bodies consisting of a front part (32) and a handle (31), the bodies being pivotally connected between the front part (32) and the handle (31) by means of a pin (33), the contact plate being arranged at the front end of the front part (32).

9. The vascular anastomosis assembly of claim 1, wherein: in the relative assembly of the mating sides of the pair of anastomotic rings (10) by the pins (15) and sockets (16), the openings (12) of the pair of anastomotic rings (10) are mutually offset by 180 degrees with respect to the circumference of the ring body (11).