A vascular anastomosis device

Abstract

The present invention relates to a blood vessel anastomosis device, comprising a first anastomosis ring formed by a first left half circle and a first right half circle, and a second anastomosis ring formed by a second left half circle and a second right half circle; the end faces of the first anastomosis ring and the second anastomosis ring arranged opposite to each other are both provided with a plurality of protrusions at intervals along the circumferential direction, and the protrusions on the first anastomosis ring and the second anastomosis ring are arranged alternately; the first anastomosis ring and the second anastomosis ring have an anastomosis state of being embedded together end to end, and a separation state of being separated from each other; when the first anastomosis ring and the second anastomosis ring are in the anastomosis state, the anastomosis part thereof has an annular hole passing through the protrusion, and the annular hole is reserved with a needle entry port and a needle exit port. The device can prevent blood vessel twisting and blood vessel bleeding, has high anastomosis quality, makes the tension of the pull line appropriate, and avoids the defects of being too loose or too tight.

Description

Technical Field

[0001] The invention relates to a blood vessel anastomosis device, belonging to the technical field of medical equipment. Background Art

[0002] Vascular anastomosis is a technique that directly connects arteries, veins, and even arteries to veins to form a vascular pathway. Among the traditional anastomosis methods, suturing is the most effective, and usually includes the following steps: 1) Pre-anastomosis treatment: including separation of the vascular ends, checking blood flow conditions, stripping of the vascular adventitia, flushing the lumen of the vascular ends, etc.; 2) Vascular anastomosis: according to the size of the blood vessel, use the two-point method or the three-point method, and choose the interrupted or continuous eversion suture method for vascular anastomosis; 3) Post-anastomosis treatment: including loosening the vascular clamp, dealing with arterial spasm, suturing the wound, etc. Among them, in step 2), interrupted suture is generally preferred for those with a diameter of less than 2 mm; for those with a diameter of more than 2 mm, continuous suture can be used. Generally speaking, continuous suture has a better hemostatic effect, but if the suture is too tight, it may shrink the anastomosis.

[0003] Normally, if the arterial defect is small after sharp cutting or debridement, the end-to-end anastomosis can be performed directly. However, vascular anastomosis is currently mainly done manually, which has the following disadvantages: 1) Manual suturing can easily lead to vascular torsion; 2) The tightness of the suture thread is not appropriate, which can be too loose or too tight, affecting the quality of vascular anastomosis; 3) When the suture quality is low, it can easily lead to vascular leakage. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a vascular anastomosis device which can prevent vascular twisting and vascular bleeding and has high anastomosis quality. By using the anastomosis device, the tightness of the pull line can be appropriate to avoid the defects of being too loose or too tight.

[0005] In order to solve the above technical problems, the technical solution proposed by the present invention is: a vascular anastomosis device, comprising a first anastomosis circle formed by a first left half circle and a first right half circle, and a second anastomosis circle formed by a second left half circle and a second right half circle;

[0006] The end surfaces of the first anastomotic ring and the second anastomotic ring that are arranged opposite to each other are both provided with a plurality of protrusions at intervals along the circumferential direction, and the protrusions on the first anastomotic ring and the second anastomotic ring are arranged alternately; the first anastomotic ring and the second anastomotic ring have an anastomotic state of being embedded together end to end, and a separated state of being separated from each other;

[0007] When the first anastomotic ring and the second anastomotic ring are in an anastomotic state, the anastomotic portion thereof has an annular hole passing through the protrusion, and a needle entry port and a needle exit port are reserved on the annular hole.

[0008] When the doctor of the present invention performs vascular anastomosis, the blood vessel is surrounded by the first anastomotic circle and the second anastomotic circle formed by the matching, and no operation that is not conducive to vascular anastomosis, such as twisting force on the blood vessel, will be generated, thereby preventing the blood vessel from twisting. The present invention sets the end faces of the first anastomotic circle and the second anastomotic circle at the anastomosis to a concave-convex shape with a plurality of protrusions, so that the protrusions of the first anastomotic circle and the depressions between the adjacent protrusions of the second anastomotic circle match each other, and the protrusions of the second anastomotic circle and the depressions between the adjacent protrusions of the first anastomotic circle match each other. Therefore, by setting an annular hole passing through the protrusions at the anastomosis of the first anastomotic circle and the second anastomotic circle, the suture needle sutures along the annular hole for one circle and then ties a knot, and the suture operation can be completed. Compared with the prior art, the tightness of the suture pull line is easy to adjust, and it will not be too loose or too tight, thereby improving the quality of vascular anastomosis, and the suture quality is high, avoiding the occurrence of vascular leakage.

[0009] In order to facilitate the matching to form the first anastomotic circle or the second anastomotic circle, the present invention adopts the following two methods: (1) The first left half circle and the first right half circle are matched together by magnetic attraction to form the first anastomotic circle, and similarly, the second left half circle and the second right half circle are also matched together by magnetic attraction to form the second anastomotic circle. (2) The first anastomotic circle is provided with a first clamp handle, the first clamp handle includes two first clamp arms hinged together, the first clamp arm includes a first hand-holding part and a first expansion part, and the first left half circle and the first right half circle are respectively connected to the two first expansion parts; similarly, the second anastomotic circle is provided with a second clamp handle, the second clamp handle includes two second clamp arms hinged together, the second clamp arm includes a second hand-holding part and a second expansion part, and the second left half circle and the second right half circle are respectively connected to the two second expansion parts.

[0010] In addition, the present invention can also be improved as follows: the first left half circle and the first right half circle are respectively provided with a key and a groove at the matching position, thereby forming a first key groove limiting structure; similarly, the second left half circle and the second right half circle are also respectively provided with a key and a groove at the matching position, thereby forming a second key groove limiting structure. In this way, the first left half circle, the first right half circle, the second left half circle, and the first right half circle can be limited in the length direction, which is beneficial for putting the first anastomotic circle and the second anastomotic circle in anastomotic state when needed.

[0011] In order to facilitate the anastomosis of the first anastomotic ring and the second anastomotic ring, the present invention adopts the following two methods: (1) When the first anastomotic ring and the second anastomotic ring are in an anastomotic state, they are connected together by magnetic attraction. (2) At least one buckle structure for connecting the first anastomotic ring and the second anastomotic ring is provided between the first anastomotic ring and the second anastomotic ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] Figure 1 It is a schematic diagram of the matching state of the first embodiment of the present invention.

[0014] Figure 2 It is a schematic diagram of the separation structure of the second embodiment of the present invention.

[0015] Figure 3 It is a schematic diagram of the decomposed structure of the first embodiment of the present invention.

[0016] Figure 4 1 is a schematic cross-sectional view of the anastomosis portion of an embodiment of the present invention.

[0017] Figure 5 yes Figure 1 Schematic cross-sectional view of .

[0018] Figure 6 It is a schematic diagram of the matching state of the second embodiment of the present invention.

[0019] Figure 7 yes Figure 6 Schematic diagram of the decomposition structure.

[0020] Figure 8 It is a schematic diagram of the matching state of the third embodiment of the present invention.

[0021] Fig. 9 yes Figure 8 Schematic diagram of the decomposition structure.

[0022] Figure numerals: 1, first anastomotic circle; 1-1, first left half circle; 1-2, first right half circle; 2, second anastomotic circle; 2-1, second left half circle; 2-2, second right half circle; 3, annular hole; 3-1, needle entry port; 3-2, needle exit port; 4, suture thread; 5, first keyway limiting structure; 6, second keyway limiting structure; 7, buckle structure; 8, first clamp handle; 8-1, first hand-held part; 8-2, first expansion part; 8-3, first hinge shaft; 9, second clamp handle; 9-1, second hand-held part; 9-2, second expansion part; 9-3, second hinge shaft. DETAILED DESCRIPTION

[0023] Embodiment 1

[0024] The vascular anastomosis device of this embodiment is as follows Figure 1-3 As shown, it includes a first matching circle 1 formed by matching a first left half circle 1-1 and a first right half circle 1-2, and a second matching circle 2 formed by matching a second left half circle 2-1 and a second right half circle 2-2.

[0025] The first anastomotic ring 1 and the second anastomotic ring 2 are in an anastomotic state of being embedded together end to end (such as Figure 1 ), and separate states that are separated from each other (as shown in Figure 2 The end surfaces of the first anastomotic ring and the second anastomotic ring that are arranged opposite to each other are both provided with a plurality of protrusions at intervals along the circumferential direction, and the protrusions of the first anastomotic ring and the second anastomotic ring are arranged alternately, so that the end surfaces of the first anastomotic ring and the second anastomotic ring at the anastomosis point respectively have mutually matching concave points and convex points (forming a concave-convex structure), so that the end portions are anastomosed, thereby facilitating the suturing operation of the blood vessels.

[0026] like Figure 4-5 As shown, when the first anastomotic ring 1 and the second anastomotic ring 2 are in an anastomotic state, the anastomotic portion thereof has an annular hole 3 passing through the protrusion, and the annular hole 3 is reserved with a needle entry port 3-1 and a needle exit port 3-2.

[0027] This embodiment can also be improved as follows: Figure 3 As shown, the first left half circle 1-1 and the first right half circle 1-2 are respectively provided with a key and a groove at the matching position, thereby forming a first key groove limiting structure 5; similarly, the second left half circle 2-1 and the second right half circle 2-2 are also respectively provided with a key and a groove at the matching position, thereby forming a second key groove limiting structure 6. The first key groove limiting structure 5 and the second key groove limiting structure 6 jointly fix the degree of freedom of the vascular anastomosis device to prevent twisting.

[0028] When a patient needs to undergo vascular anastomosis surgery, the blood vessels are first cleaned to restore the normal structure and elasticity of the two broken ends. The lumen is flushed with heparinized saline to remove any blood clots and cellulose deposits, making the inner membrane bright and complete. In addition, the diameters of the two ends of the blood vessels that need to be sutured need to be close to each other.

[0029] After making the corresponding preparations, start the vascular anastomosis. First, prepare two matching forceps and sterilize them. The assistant wraps the blood vessels that need to be anastomosed at both ends to form a straight line; the doctor uses forceps to wrap the blood vessels in the first anastomosis circle or the second anastomosis circle respectively, with an eversion length of about 0.5-1cm, and confirm that the blood vessels are not subjected to twisting force and other factors that are unfavorable to vascular anastomosis. After completion, the first left anastomosis circle 1-1 and the first right anastomosis circle 1-2 are aligned along a straight line to form a first anastomosis circle 1 surrounding a broken blood vessel, and the second left anastomosis circle 2-1 and the second right anastomosis circle 2-2 are aligned to form a second anastomosis circle 2 surrounding another broken blood vessel, and then the first anastomosis circle 1 and the second anastomosis circle 2 are anastomosed, that is, the corresponding notches formed by the concave-convex structure at the end are anastomosed.

[0030] After the anastomosis is completed, the blood vessel is sutured after confirming that there is no twisting or dislocation problem. The doctor inserts a tough suture needle through the needle inlet 3-1 on the annular hole 3, and sutures along the channel formed by the inner annular hole 3 for one circle, then exits along the needle outlet 3-2 and ties a knot. After completion, the first and second anastomotic circles 1 and 2 are gently retreated respectively to withdraw the outer blood vessel, and then the first and second anastomotic circles are opened respectively to place the blood vessel on a healthy and complete soft tissue bed to complete the vascular anastomosis.

[0031] Preferably, in this embodiment, the first left half circle 1-1 and the first right half circle 1-2 are magnetically coupled together to form a first anastomotic circle 1, and similarly, the second left half circle 2-1 and the second right half circle 2-2 are also magnetically coupled together to form a second anastomotic circle 2. That is, the first anastomotic circle 1 and the second anastomotic circle 2 are made of magnetic material, and the four semicircular anastomotic circles are matched to form the annular first anastomotic circle 1 and the second anastomotic circle 2 through the upper and lower cooperation. After the vascular anastomosis is completed, the magnetic ring is removed.

[0032] Preferably, in this embodiment, when the first anastomotic ring 1 and the second anastomotic ring 2 are in anastomotic state, they are connected together by magnetic attraction.

[0033] Embodiment 2

[0034] The difference between this embodiment and the first embodiment is that in this embodiment, when the first anastomotic ring 1 and the second anastomotic ring 2 are in anastomotic state, they are no longer connected together by magnetic attraction. Figure 6 and Figure 7 As shown, at least two buckle structures 6 for connecting the first anastomotic ring 1 and the second anastomotic ring 2 are provided between the first anastomotic ring 1 and the second anastomotic ring 2 .

[0035] In this embodiment, the first anastomotic ring and the second anastomotic ring are interlocked by a buckle structure, and the vascular stapler is fixed by buckling to anastomose the blood vessels. Then, the skin is sutured for one circle through the annular hole 3 (side suture hole), and then the suture is knotted. After the suturing is completed, the buckle is pressed to separate the stapler.

[0036] Embodiment 3

[0037] The difference between this embodiment and embodiment one is that: in this embodiment, the first left half circle 1-1 and the first right half circle 1-2 are not magnetically coupled together to form the first matching circle 1, and similarly, the second left half circle 2-1 and the second right half circle 2-2 are not magnetically coupled together to form the second matching circle 2.

[0038] But as Figure 8 and Fig. 9As shown, the first anastomotic ring 1 is provided with a first clamp handle 8, the first clamp handle 8 includes two first clamp arms hinged together by a first hinge shaft 8-3, the first clamp arm includes a first hand-holding part 8-1 and a first expansion part 8-2, the first left half circle 1-1 and the first right half circle 1-2 are respectively connected to the two first expansion parts 8-2; similarly, the second anastomotic ring 2 is provided with a second clamp handle, the second clamp handle includes two second clamp arms hinged together by a first hinge shaft 9-3, the second clamp arm includes a second hand-holding part 9-1 and a second expansion part 9-2, the second left half circle 2-1 and the second right half circle 2-2 are respectively connected to the two second expansion parts 9-2.

[0039] This embodiment uses forceps as the basic state, and realizes the opening and closing of the vascular anastomosis tube body by buckling two mutually anastomosing forceps. Then the head ends can be anastomosed to realize vascular anastomosis. During the anastomosis, the two forceps first wrap the two ends of the blood vessels to be anastomosed respectively, and at the same time slightly retreat, wrap the blood vessels to the outside of the anastomosis tube, and anastomose the two. The anastomosis has a hollow ring, and the needle is wrapped around the hollow ring through the annular hole 3 (side suture hole) to realize the vascular anastomosis. When the anastomosis is completed, it is wound out and tied through the annular hole 3 to complete the anastomosis.

[0040] The present invention is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present invention may also have other implementation modes. For those skilled in the art, any technical solutions formed by any modification, equivalent replacement, improvement, 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 vascular anastomosis device, characterized in that: It includes a first anastomotic circle formed by the first left half circle and the first right half circle, and a second anastomotic circle formed by the second left half circle and the second right half circle; The end surfaces of the first anastomotic ring and the second anastomotic ring that are arranged opposite to each other are both provided with a plurality of protrusions at intervals along the circumferential direction, and the protrusions on the first anastomotic ring and the second anastomotic ring are arranged alternately; the first anastomotic ring and the second anastomotic ring have an anastomotic state of being embedded together end to end, and a separated state of being separated from each other; When the first anastomotic ring and the second anastomotic ring are in an anastomotic state, the anastomotic portion thereof has an annular hole passing through the protrusion, and a needle entry port and a needle exit port are reserved on the annular hole; The first left half circle and the first right half circle are magnetically attracted to form a first anastomotic circle, and similarly, the second left half circle and the second right half circle are magnetically attracted to form a second anastomotic circle; The first anastomotic ring is provided with a first clamp handle, which includes two first clamp arms hinged together, the first clamp arm includes a first hand-holding portion and a first expansion portion, and the first left half circle and the first right half circle are respectively connected to the two first expansion portions; similarly, the second anastomotic ring is provided with a second clamp handle, which includes two second clamp arms hinged together, the second clamp arm includes a second hand-holding portion and a second expansion portion, and the second left half circle and the second right half circle are respectively connected to the two second expansion portions.

2. The vascular anastomosis device according to claim 1, characterized in that: When the first anastomotic ring and the second anastomotic ring are in an anastomotic state, they are connected together by magnetic attraction.

3. The vascular anastomosis device according to claim 1, characterized in that: At least one buckle structure for connecting the first anastomotic ring and the second anastomotic ring is provided between the first anastomotic ring and the second anastomotic ring.

4. The vascular anastomosis device according to claim 1, characterized in that: The first left half circle and the first right half circle are respectively provided with a key and a groove at the matching position, thereby forming a first keyway limiting structure; similarly, the second left half circle and the second right half circle are also respectively provided with a key and a groove at the matching position, thereby forming a second keyway limiting structure.

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