Microvascular anastomosis apparatus and method

Abstract

The application relates to a micro-vessel anastomat and an anastomosis method, which comprises two anastomosis rings arranged face to face, a plurality of lead needles and a clamping forceps; the anastomosis ring is provided with a blood vessel slot hole penetrating in the axial direction; the side of the two anastomosis rings close to each other is provided with a plurality of insertion needle holes and a plurality of needle penetrating holes, the plurality of insertion needle holes and the plurality of needle penetrating holes are distributed in the circumferential direction at intervals, the needle penetrating hole is an axial through hole; the tail end of the insertion needle hole is connected with a suture; the clamping forceps comprises forceps and two rotating mechanisms, the forceps comprises two hinged forceps arms, the forceps arms are connected with the rotating mechanisms, and the two rotating mechanisms are rotated to open and close relative to the forceps arms; wherein the two anastomosis rings are connected with the two rotating mechanisms respectively, the two rotating mechanisms drive the two anastomosis rings to rotate to open and close until parallel, the two forceps arms drive the two anastomosis rings to close to each other, and the lead needle of one of the two anastomosis rings is inserted into the needle penetrating hole of the other. The application easily aligns and buckles the two anastomosis rings together and is convenient, fast, accurate and easy to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical surgical instruments, in particular to a microvascular anastomat and an anastomosis method. BACKGROUND

[0002] In various surgical operations, blood vessel anastomosis is a necessary operation item. Blood vessel anastomosis usually includes artificial suture and anastomosis using anastomosis rings. Regardless of which way is adopted, the key to blood vessel anastomosis is that the blood vessel intima should be anastomosed in an everted state, so as to avoid the possible contact of the blood vessel intima with foreign matter at the blood vessel butt joint.

[0003] Blood vessel anastomosis in surgical operations usually includes two ways of artificial suture and mechanical anastomosis of blood vessels using anastomosis rings, and is mainly still dominated by the traditional needle and thread anastomosis method. The use of sutures for blood vessel anastomosis is the currently recognized standard method of blood vessel anastomosis and the most commonly used method of blood vessel anastomosis in daily clinical practice.

[0004] Manual suture for blood vessel anastomosis and limb replantation has been widely used in surgical operations after more than 100 years of development, such as in many fields of plastic surgery, hepatobiliary surgery, cardiothoracic surgery, urology surgery, etc. Blood vessel anastomosis technology is needed. Manual suture has the advantages of simple tools and wide application range, but the suture skill requires a high level of doctors, and doctors who can master the microsurgical blood vessel anastomosis technology need at least 3 to 5 years of basic training and experience accumulation in microsurgery. Even if the doctor has undergone long-term surgical training and is skilled, the long operation time (an average of 5-8 hours for one operation) will greatly affect the physical strength, energy, psychology, emotions and many other aspects, which may lead to surgical failure. In addition, the exposed suture thread in the blood vessel can interfere with the normal flow of blood, and the everted anastomosis operation can increase the risk of thrombosis. Human blood vessels have corresponding elasticity and stretch in tissues, and manual suture is difficult to accurately position them, so problems such as loose suture, too deep or too shallow suture, too tight or too loose suture, etc. can easily occur during the operation, leading to blood leakage at the connection; the influence of suture needle and thread after the operation can easily lead to the formation of thrombus and even the failure of the operation.

[0005] Vascular mechanical anastomosis is a method of replacing or partially replacing suture with a specially designed blood anastomosis device, also known as vascular anastomosis ring method, which is generally divided into sleeve method, magnetic attraction method, anastomosis clamp method and needle ring method. These mechanical vascular anastomosis methods can well avoid the disadvantages brought by manual suture, but the volume of the vascular anastomosis ring is generally small, the precision requirement is high, and the installation is not accurate, causing the problems of difficult installation and insecure installation. The wheel type anastomosis ring has the advantages of standard operation, uniformity, standardization, no intimal wound, no anastomosis leakage, no anastomosis stenosis and the like. The multi-needle core rod suture instrument is a semi-manual and semi-instrument, although the number of single-needle and single-line suturing is reduced, the number of manual knotting after suturing is not reduced, and various defects of manual suturing are not overcome.

[0006] Chinese patent CN113069164A discloses a detachable and reusable microvascular anastomosis device and a method for using the same. The anastomosis device comprises two mutually opposite half buckles; the main body of the half buckle is a half cylinder, an axially through half circular groove is formed on the inner surface of the half cylinder, a matching groove is arranged on the groove edge of the half circular groove, a plurality of tooth-shaped protrusions protruding from the outer surface are arranged on the front section of the half buckle, the tooth-shaped protrusions are divergent from the center to the outside, a fixing needle or a plug-in hole is arranged on the tooth-shaped protrusion, the tooth-shaped protrusions with the fixing needle are distributed at intervals with the tooth-shaped protrusions with the plug-in hole, the fixing needle extends axially from the front end surface of the tooth-shaped protrusion; a triangular space with a pointed end pointing to the root of the tooth-shaped protrusion is formed between two adjacent tooth-shaped protrusions, an axial hole-shaped groove for inserting a suture needle is formed on the pointed end of the triangular space. The present application can realize vascular everted anastomosis, can be removed from the blood vessel after completing the suture, and can reduce the cost and the selling price, thereby reducing the medical expenses.

[0007] However, the following problems exist: 1. The anastomosis device is small and it is not easy to buckle two anastomosis devices together, so that it is difficult to insert the fixing needle into the needle hole on the opposite side, and it is not convenient and fast to use; 2. It is not convenient to evert the blood vessel after passing through the anastomosis device. SUMMARY

[0008] Therefore, the technical problem to be solved by the present application is to overcome the problems in the prior art that it is not easy to buckle two anastomosis devices together, so that it is difficult to insert the fixing needle into the needle hole on the opposite side, and it is not convenient and fast to use; and it is not convenient to evert the blood vessel after passing through the anastomosis device.

[0009] To solve the above technical problems, on the one hand, the present application provides a microvascular anastomosis device, comprising:

[0010] Two anastomosis rings are arranged face to face, and a blood vessel groove hole axially penetrating through the anastomosis ring is arranged; a plurality of needle insertion holes and a plurality of needle insertion holes are arranged on one side of each of the two anastomosis rings, the plurality of needle insertion holes and the plurality of needle insertion holes are distributed at intervals in the circumferential direction, and the needle insertion hole is an axial through hole;

[0011] A plurality of lead needles are connected in the insertion needle holes of the two anastomosis rings, and the tail ends of the insertion needle holes are connected with suture threads;

[0012] The clamping forceps comprise forceps and two rotating mechanisms, the forceps comprise two articulated forceps arms, the forceps arms are connected with the rotating mechanisms, and the two rotating mechanisms are rotated relative to the forceps arms to open and close;

[0013] The two anastomosis rings are connected with the two rotating mechanisms respectively, the two forceps arms drive the two anastomosis rings to rotate to open and close until parallel, the two forceps arms drive the two anastomosis rings to approach each other, and the lead needle of one of the two anastomosis rings is inserted into the needle insertion hole of the other anastomosis ring.

[0014] In some embodiments of the present application, the anastomosis ring comprises two anastomosis half-rings, and the two anastomosis half-rings are radially closed to form the anastomosis ring.

[0015] In some embodiments of the present application, the two anastomosis half-rings are closed to form a joint line in the anastomosis ring, and the joint lines of the two anastomosis rings intersect.

[0016] One of the two anastomosis rings is provided with a through hole, and the other anastomosis ring is provided with a fixing needle inserted into the through hole.

[0017] In some embodiments of the present application, a wire coiling groove is arranged at a position outside the insertion needle hole in the anastomosis ring, the wire coiling groove is an annular groove, a suture thread is coiled in the wire coiling groove, and one end of the suture thread is connected with the lead needle.

[0018] In some embodiments of the present application, a slot-shaped hole is arranged at one side of the needle insertion hole in the anastomosis ring, and the slot-shaped hole is communicated to the outside of the anastomosis ring.

[0019] In some embodiments of the present application, the rotating mechanism comprises a connecting rod, a rotating ring and a ratchet wheel.

[0020] The connecting rod is symmetrically arranged at two sides of the forceps, the two forceps arms of the forceps are arranged in an X shape and are hingedly connected at the intersection of the two forceps arms through a first central shaft, one of the two forceps arms on the same side of the first central shaft is hingedly connected with the bottom end of the connecting rod through a second central shaft, and the other forceps arm is hingedly connected with the middle part of the connecting rod through a third central shaft, the connecting rod is provided with a sliding groove extending in the axial direction of the connecting rod, and the third central shaft slides back and forth in the sliding groove.

[0021] The ratchet wheel is connected with the top end of the forceps arm.

[0022] The bottom end of the rotating ring is provided with a cam protruding from the lower surface of the rotating ring, the lower surface of the cam is arc-shaped, and the two ends of the arc-shaped surface have a difference in the axial direction of the rotating ring.

[0023] The rotating ring is sleeved on the top end of the connecting rod and rotates relative to the connecting rod in the circumferential direction, and the cam of the rotating ring is in contact with the ratchet wheel.

[0024] In some embodiments of the present application, the rotating mechanism further comprises a limiting pin and a limiting groove; the limiting pin is fixed to the outer wall of the connecting rod; the limiting groove penetrates through the wall of the rotating ring along the circumference of the rotating ring;

[0025] The limiting pin is located in the limiting groove.

[0026] In some embodiments of the present application, the bottom of the rotating ring is provided with an axially extending connecting groove, which is in communication with the limiting groove.

[0027] In some embodiments of the present application, the top end of each of the two rotating mechanisms is connected with a rotating clamping part, which is provided with a clamping opening; the inner wall of the clamping opening is provided with a protruding clamping groove.

[0028] The middle part of the outer wall of the anastomosis ring is provided with a ring groove; the anastomosis ring is located in the clamping opening, and the clamping groove is clamped in the ring groove.

[0029] In some embodiments of the present application, the forceps further comprise two locking rods, which are respectively connected to the inner side of the two arms; the free end of each locking rod is provided with a tooth; and the teeth of the two locking rods are engaged.

[0030] In some embodiments of the present application, the anastomosis ring is made of plastic.

[0031] On the other hand, the present application provides a microvascular anastomosis method, comprising: using the microvascular anastomosis device in the above embodiments to perform microvascular suturing, and the specific steps comprise:

[0032] The preliminary engagement of the two arms of the forceps drives the two anastomosis rings to rotate with the two rotating mechanisms until the two anastomosis rings are flatly faced each other.

[0033] The continued engagement of the two arms of the forceps drives the two anastomosis rings to approach each other until the lead needle of one of the two anastomosis rings is inserted into the needle insertion hole of the other.

[0034] The above technical solutions of the present application have the following advantages compared with the prior art:

[0035] The invention involves two blood vessels passing through the vascular grooves of two anastomotic rings, with the severed ends of the vessels everted and hooked onto the lead needles of each anastomotic ring. Two clamp arms drive the two anastomotic rings to rotate with two rotating mechanisms until they are parallel. Then, the two clamp arms drive the two anastomotic rings closer to each other until the lead needle of one anastomotic ring is inserted into the needle hole of the other. Finally, the lead needle of one anastomotic ring is removed, and a knot is tied on the side of the other anastomotic ring to complete the suture. The two anastomotic rings of this application are aligned and fastened by the engagement of the two clamp arms, easily aligning and fastening the two anastomotic rings together with convenient, quick, and accurate operation, thereby further improving suture efficiency. Secondly, when the two anastomotic rings are engaged, the two clamp arms first drive the two anastomotic rings to rotate with the two rotating mechanisms until they are parallel. In this way, the front of the two anastomotic rings opens outwards towards the operator, making it easier for the operator to pass the blood vessel through the vascular groove of the two anastomotic rings, and also making it easier for the operator to evert the cut end of the blood vessel and hook it onto the suture needles of the anastomotic rings. Thus, on the one hand, this application is easy for the operator to use; on the other hand, the axis of this application connects the clamp arms to the anastomotic rings, and then the blood vessel is passed through the vascular groove and the cut end of the blood vessel is everted and hooked onto the suture needles. This ensures the relative position of the two anastomotic rings before passing the blood vessel and the everted end of the blood vessel hooked onto the suture needles. This makes it easier to align the two anastomotic rings and further ensures the quality and efficiency of vascular suturing. Furthermore, this application utilizes a rotating mechanism to change the angle between the two anastomotic rings. During insertion into the blood vessel, the rotating mechanism adjusts the angle between the two anastomotic rings to its maximum. After insertion, the rotating mechanism is rotated in the opposite direction to gradually reduce the angle until the two anastomotic rings are parallel. Finally, the rotating mechanism is rotated to bring the two anastomotic rings closer together for suturing. Additionally, in this invention, the blood vessel stump is everted and directly hooked onto a suture needle. Suturing is then achieved by pulling out the suture needle, thus achieving suturing without creating additional wounds at the blood vessel stump. Attached Figure Description

[0036] To make the invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0037] Figure 1 This is a three-dimensional schematic diagram of an invention of a microvascular anastomosis device.

[0038] Figure 2 yes Figure 1 A schematic diagram of the back of a microvascular anastomosis device.

[0039] Figure 3 yes Figure 1 A schematic diagram of the anastomosis ring in a microvascular anastomosis device.

[0040] Figure 4 yesFigure 3 An alternative schematic view of the microvascular anastomat.

[0041] Figure 5 is Figure 3 Another alternative schematic view of the microvascular anastomat.

[0042] Figure 6 is Figure 1 A schematic view of the structure of the clamping forceps in the microvascular anastomat.

[0043] Figure 7 is Figure 1 An operation schematic view of the microvascular anastomosis method.

[0044] Figure 8 is Figure 1 An operation schematic view of the anastomosis ring in the microvascular anastomosis method.

[0045] Description of the drawing: 100, anastomosis ring; 100a, first anastomosis ring; 100b, second anastomosis ring; 110, blood vessel slot hole; 120, insertion needle hole; 130, needle passing hole; 140, anastomosis half ring; 141, binding line; 141a, first binding line; 141b, second binding line; 141c, third binding line; 141d, fourth binding line; 150, passing hole; 160, fixing needle; 161, protrusion; 170, communication groove; 180, coil groove; 190, slot-shaped hole;

[0046] 200, lead needle;

[0047] 300, suture;

[0048] 400, clamping forceps; 410, forceps arm; 411, first central shaft; 412, second central shaft; 413, third central shaft; 420, connecting rod; 421, sliding groove; 430, rotating ring; 431, cam; 431a, first end; 431b, second end; 432, connecting groove; 440, dial; 450, limiting nail; 460, limiting groove; 470, locking rod; 471, tooth;

[0049] 500, rotating clamping part; 510, clamping opening; 511, clamping table; 512, annular groove;

[0050] 600, blood vessel. DETAILED DESCRIPTION

[0051] The application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the application and implement it. The embodiments are not intended to limit the application.

[0052] ReferenceFigures 1-2 As shown, the application provides a microvascular anastomat, comprising:

[0053] Two anastomosis rings 100 are arranged face to face, and the anastomosis rings 100 are provided with axial through blood vessel grooves 110, which are circular holes; one side of each of the two anastomosis rings 100 is provided with a plurality of insertion needle holes 120 and a plurality of needle passing holes 130, and the insertion needle holes 120 and the needle passing holes 130 are distributed in a circumferential direction; the needle passing holes 130 are axial through holes;

[0054] A plurality of lead needles 200 are connected in the insertion needle holes 120 of the two anastomosis rings 100 and can be pulled out of the insertion needle holes 120; the tail end of the insertion needle hole 120 is connected with a suture 300;

[0055] The clamping forceps 400 comprise forceps and two rotating mechanisms, the forceps comprise two articulated forceps arms 410, the forceps arms 410 are connected with the rotating mechanisms, and the two rotating mechanisms are rotated open and closed relative to the forceps arms 410;

[0056] The two anastomosis rings 100 are connected with the two rotating mechanisms respectively, the two forceps arms 410 engage to drive the two anastomosis rings 100 to rotate open and closed until parallel, the two forceps arms 410 drive the two anastomosis rings 100 to approach each other, and the lead needle 200 of one of the two anastomosis rings 100 is inserted into the needle passing hole 130 of the other. For the convenience of the following description, the two anastomosis rings 100 are respectively referred to as a first anastomosis ring 100a and a second anastomosis ring 100b; the lead needle 200 of the first anastomosis ring 100a and the needle passing hole 130 of the second anastomosis ring 100b are arranged in axial opposition, the lead needle 200 of the first anastomosis ring 100a and the lead needle 200 of the second anastomosis ring 100b are arranged in circumferential misalignment, and the needle passing hole 130 of the first anastomosis ring 100a and the needle passing hole 130 of the second anastomosis ring 100b are arranged in circumferential misalignment.

[0057] Specifically, the two blood vessels 600 of the present application respectively pass through the blood vessel groove holes 110 of the two anastomosis rings 100, and the broken ends of the blood vessels 600 are everted and hooked on the lead needles 200 of the anastomosis rings 100 one by one, the two anastomosis rings 100 are driven by the two clamping arms 410 to rotate with the two rotating mechanisms until parallel, then the two anastomosis rings 100 are driven by the two clamping arms 410 to move close to each other until the lead needle 200 of one of the two anastomosis rings 100 penetrates the needle hole 130 of the other, then the lead needle 200 of one of the two anastomosis rings 100 is pulled out and knotted on the side of the other to complete the suture. The two anastomosis rings 100 of the present application are aligned and buckled by the engagement of the two clamping arms 410, which easily aligns and buckles the two anastomosis rings 100 together and is convenient, fast, accurate and easy to operate, thereby further improving the suture efficiency. Secondly, when the two anastomosis rings 100 are buckled, the two clamping arms 410 first drive the two anastomosis rings 100 to rotate with the two rotating mechanisms until parallel, so that the front surfaces of the two anastomosis rings 100 are outwardly opened in the direction of the operator, which is convenient for the operator to pass the blood vessels 600 through the blood vessel groove holes 110 of the two anastomosis rings 100, and convenient for the operator to evert the broken ends of the blood vessels 600 and hook them on the lead needles 200 of the anastomosis rings 100. As can be seen, on the one hand, the present application is convenient for the operator to use; on the other hand, the axis connects the clamping arms 410 and the anastomosis rings 100, then the blood vessels 600 are passed through the blood vessel groove holes 110 and the broken ends of the blood vessels 600 are everted and hooked on the lead needles 200, which ensures the relative position of the two anastomosis rings 100 before passing the blood vessels 600 and evert the broken ends of the blood vessels 600 and hook them on the lead needles 200, thereby further ensuring the quality and efficiency of the suture of the blood vessels 600 on the premise of making the two anastomosis rings 100 more easily aligned. In addition, the rotation of the rotating mechanism changes the included angle between the two anastomosis rings 100, so that the included angle between the two anastomosis rings 100 is adjusted to the maximum by rotating the rotating mechanism when the blood vessels 600 are passed in, then the rotating mechanism is reversely rotated to gradually reduce the included angle between the two anastomosis rings 100 until parallel after the blood vessels 600 are passed in, and finally the rotating mechanism is rotated to move the two anastomosis rings 100 close to each other for suture. Thirdly, the broken ends of the blood vessels 600 are directly hooked on the lead needles 200 after being everted, then the suture of the blood vessels 600 is realized by pulling out the lead needles 200, and the suture is realized without causing additional wounds to the broken ends of the blood vessels 600.

[0058] Referring to Figure 3 Further, the anastomosis ring 100 comprises two anastomosis half-rings 140, and the two anastomosis half-rings 140 are radially closed to form the anastomosis ring 100. Each of the two anastomosis half-rings 140 is provided with a half blood vessel groove hole 110.

[0059] Specifically, the anastomosis ring 100 in the embodiment is formed by the two anastomosis half-rings 140, which facilitates the blood vessel 600 to pass through the blood vessel slot hole 110.

[0060] With reference to Figure 3 Further, the two anastomosis half-rings 140 form a joint line 141 in the anastomosis ring 100, and the joint lines 141 of the two anastomosis rings 100 intersect, for example, the joint lines 141 of the two anastomosis rings 100 intersect in a cross shape.

[0061] In the two anastomosis rings 100, one is provided with a through hole 150, and the other is provided with a fixing needle 160 penetrating the through hole 150.

[0062] Specifically, the joint lines 141 of the two anastomosis rings 100 in the embodiment intersect, and the fixing needle 160 of one of the two anastomosis half-rings 140 penetrates the through hole 150 of the other, thereby realizing the relative fixed connection of the two anastomosis rings 100. The structure is simple, and facilitates the fixation and separation between each other.

[0063] With reference to Figure 4 In some possible embodiments, the two anastomosis half-rings 140 of the embodiment form two joint lines 141 in the anastomosis ring 100, and the joint lines 141 of the two anastomosis rings 100 are arranged in a circumferential staggered manner; for example, the two anastomosis half-rings 140 of the first anastomosis ring 100a form a first joint line 141a and a second joint line 141b, and the two anastomosis half-rings 140 of the second anastomosis ring 100b form a third joint line 141c and a fourth joint line 141d; the first joint line 141a, the second joint line 141b, the third joint line 141c and the fourth joint line 141d are arranged in a circumferential staggered manner. In this way, the blood vessel 600 is avoided from being subjected to radial pressure of the anastomosis ring 100, thereby avoiding damage to the blood vessel 600 caused by external force.

[0064] In the two anastomosis half-rings 140, one is provided with a through hole 150, and the other is provided with a fixing needle 160 penetrating the through hole 150.

[0065] With reference to Figure 5 Further, the front end of the fixing needle 160 is provided with a tapered head.

[0066] Specifically, the tapered head facilitates the fixing needle 160 to penetrate the through hole 150.

[0067] With reference to Figure 5 Further, the front end of the lead needle 200 is provided with a tapered head.

[0068] Specifically, the tapered head facilitates the lead needle 200 to penetrate the needle hole 130.

[0069] With reference toFigure 5 Further, the front end of the fixing needle 160 is provided with a tapered head. The front end of the lead needle 200 is provided with a tapered head.

[0070] With reference to the above Figure 5 Further, the fixing needle 160 is provided with a protrusion 161 protruding from the outer wall thereof, and the protrusion 161 is in interference fit with the through hole 150.

[0071] Specifically, in the embodiment, the fixing needle 160 is provided with the protrusion 161, the outer diameter of the fixing needle 160 at other positions is smaller than the inner diameter of the through hole 150, and the outer diameter of the protrusion 161 is greater than the inner diameter of the through hole 150. Thus, the fixing needle 160 is facilitated to pass through the through hole 150, and after the fixing needle 160 passes through the through hole 150, the protrusion 161 is in interference fit with the through hole 150, so as to avoid that the two anastomosis rings 100 move axially during the suturing process and affect the suturing.

[0072] With reference to the above Figure 5 Further, the distance between the fixing needle 160 and the center of the vessel groove hole 110 is greater than the distance between the lead needle 200 and the center of the vessel groove hole 110. That is, the fixing needle 160 is arranged at the outer circle compared with the lead needle 200.

[0073] Specifically, in the embodiment, the distance between the fixing needle 160 and the center of the vessel groove hole 110 is greater than the distance between the lead needle 200 and the center of the vessel groove hole 110. Thus, after the broken end of the blood vessel 600 is everted, the broken end is directly hooked on the lead needle 200, and will not be hooked on the fixing needle 160, so as to reduce the damage of the broken end of the blood vessel 600.

[0074] With reference to the above Figure 5 Further, one side of the needle insertion hole 120 of the anastomosis ring 100 is provided with a communication groove 170 in communication with the needle insertion hole 120; and the lead needle 200 of the anastomosis ring 100 is in interference fit with the needle insertion hole 120.

[0075] Specifically, in the embodiment, the anastomosis ring 100 is provided with the communication groove 170, and the communication groove 170 is arranged to facilitate the lead needle 200 to be pulled out of the needle insertion hole 120 for suturing.

[0076] With reference to the above Figure 5 Further, the anastomosis ring 100 is provided with a wire winding groove 180 at a position outside the needle insertion hole 120, the wire winding groove 180 is an annular groove 512, the wire winding groove 180 is in communication with the needle insertion hole 120 through the communication groove 170; a suture 300 is wound in the wire winding groove 180, and one end of the suture 300 is connected with the lead needle 200.

[0077] Specifically, the disc line groove 180 is arranged, so that the suture 300 is arranged in the disc line groove 180 in advance and one end is directly connected to the lead needle 200, and the operator does not need to perform this operation when using, so that the use is more convenient and fast.

[0078] With reference to Figure 1 , further, the anastomosis ring 100 is provided with a groove hole 190 on one side of the needle hole 130, and the groove hole 190 is communicated to the outside of the anastomosis ring 100.

[0079] Specifically, the groove hole 190 is arranged, so that after the blood vessel 600 is sutured, the one end of the suture 300 connected to the lead needle 200 is pulled out of the groove hole 190 and knotted with the other end of the suture 300 in the disc line groove 180.

[0080] With reference to Figure 2 , Figure 6 and Figure 1 , further, the rotating mechanism includes a connecting rod 420, a rotating ring 430 and a dial 440;

[0081] The connecting rod 420 is symmetrically arranged on both sides of the forceps, the two forceps arms 410 of the forceps are arranged in an X shape and are hingedly connected at the intersection of the two forceps arms 410 by a first center shaft 411, and the center shaft is a pin shaft; the two forceps arms 410 on the same side of the first center shaft 411 are hingedly connected to the bottom end of the connecting rod 420 by a second center shaft 412 and the middle part of the connecting rod 420 by a third center shaft 413; the connecting rod 420 is provided with a sliding groove 421 extending in the axial direction thereof, and the third center shaft 413 slides back and forth in the sliding groove 421;

[0082] The dial 440 is connected to the top end of the forceps arm 410;

[0083] The bottom end of the rotating ring 430 is provided with a cam 431 protruding from the lower surface thereof, the lower surface of the cam 431 is arc-shaped, and the two ends of the arc-shaped surface have a difference in position, i.e., a difference in position in the axial direction of the rotating ring 430; in order to facilitate the description below, the two ends are referred to as a first end 431a and a second end 431b, respectively, and the first end 431a is closer to the anastomosis ring 100 in the axial direction than the second end 431b.

[0084] The rotating ring 430 is sleeved on the top end of the connecting rod 420 and rotates in the circumferential direction relative to the connecting rod 420; the cam 431 of the rotating ring 430 is in contact with the dial 440.

[0085] Specifically, the two clamping arms 410 in the embodiment are engaged to make the third central shaft 413 move in the sliding groove 421, so that the cam 431 moves from the second end 431b to the first end 431a along the lower surface of the rotating ring 430, thus driving the anastomosis rings 100 to rotate around the connecting rod 420 with the rotating ring 430, and when the third central shaft 413 slides to the top end of the sliding groove 421, the two anastomosis rings 100 are parallel at this time. Then continue to engage the two clamping arms 410, at this time the two anastomosis rings 100 are close to each other to suture the blood vessel 600. As can be seen, the embodiment is more convenient to operate, and the suture quality and efficiency are high.

[0086] With reference to Figure 2 , Figure 6 and Figure 1 further, the rotating mechanism further comprises a limiting pin 450 and a limiting groove 460; the limiting pin 450 is fixed to the outer wall of the connecting rod 420; the limiting groove 460 penetrates through the wall of the rotating ring 430 along the circumference of the rotating ring 430;

[0087] wherein the limiting pin 450 is located in the limiting groove 460.

[0088] Specifically, the embodiment is provided with the limiting pin 450 and the limiting groove 460, and the limiting pin 450 is located in the limiting groove 460, so that the cooperation of the limiting pin 450 and the limiting groove 460 provides a guiding effect for the rotation of the rotating ring 430, and on the other hand, limits the axial movement of the rotating ring 430 during rotation.

[0089] With reference to Figure 2 , Figure 6 and Figure 1 further, the bottom of the rotating ring 430 is provided with an axially extending connecting groove 432, and the connecting groove 432 is in communication with the limiting groove 460.

[0090] Specifically, the embodiment is provided with the connecting groove 432 in communication with the limiting groove 460, so that the rotating ring 430 of the anastomosis ring 100 is separated from the connecting rod 420 before use, and the anastomosis ring 100 is installed on the rotating ring 430 before the rotating ring 430 is installed on the connecting rod 420 during use, so that the rotating ring 430 and the anastomosis ring 100 connected to the rotating ring 430 are disposable products, and the forceps and the connecting rod 420 connected to the forceps are reusable parts. Because the area of the anastomosis ring 100 is relatively small, if the operator installs the anastomosis ring 100 on the rotating ring 430 on site, it is difficult to install, which reduces the efficiency of the operation. The embodiment installs the anastomosis ring 100 on the rotating ring 430 in advance, and only needs to put the connecting groove 432 of the rotating ring 430 on the limiting pin 450, then pull down the rotating ring 430 and rotate the rotating ring 430 to make the limiting pin 450 be clamped in the limiting groove 460. It is convenient for the operator to use quickly.

[0091] With reference to Figure 2 , Figure 6 and Figure 1 , further, the top end of each of the two rotating mechanisms is connected with a rotating clamping part 500, the rotating clamping part 500 is provided with a clamping opening 510, the inner wall of the clamping opening 510 is provided with a protruding clamping table 511;

[0092] The middle part of the outer wall of the anastomosis ring 100 is provided with a ring-shaped groove 512, the anastomosis ring 100 is located in the clamping opening 510, and the clamping table 511 is clamped in the ring-shaped groove 512.

[0093] Specifically, the connection between the anastomosis ring 100 and the rotating mechanism is realized by the cooperation of the clamping table 511 and the ring-shaped groove 512 in the embodiment, and the anastomosis ring 100 is removed from the blood vessel 600 after the blood vessel 600 is sutured, so as to avoid leaving the anastomosis ring 100 on the blood vessel 600.

[0094] With reference to Figure 2 , Figure 6 and Figures 7-8 , further, the forceps further include two locking rods 470, the two locking rods 470 are connected to the inner sides of the two forceps arms 410 respectively, the free ends of the locking rods 470 are each provided with a tooth 471, and the teeth 471 of the two locking rods 470 are engaged.

[0095] Specifically, the setting of the locking rod 470 in the embodiment causes the two forceps arms 410 to form a pulling force between each other, so as to avoid excessive opening of the two forceps arms 410, thereby affecting the normal use of the rotating mechanism.

[0096] Further, the anastomosis ring 100 is made of plastic. For example, the material of the anastomosis ring 100 can be PEEK, polytetrafluoroethylene or nylon, etc.

[0097] In some possible embodiments, the anastomosis ring 100 can be made of metal. For example, the material of the anastomosis ring 100 can be titanium alloy or 316L stainless steel, etc.

[0098] With reference to Figures 7-8 , the application provides a micro blood vessel 600 anastomosis method, which utilizes the micro blood vessel anastomosis device in the above embodiment to perform micro blood vessel suturing, and the specific steps include:

[0099] The preliminary engagement of the two forceps arms 410 of the forceps drives the two anastomosis rings 100 to rotate with the two rotating mechanisms until the two anastomosis rings 100 are flat and face each other.

[0100] The two forceps arms 410 of the forceps continue to engage to drive the two anastomosis rings 100 to approach each other until the lead wire needle 200 of one of the two anastomosis rings 100 is inserted into the needle insertion hole 130 of the other.

[0101] With reference to the drawings ​ Further, the anastomosis ring 100, the rotating clamp 500 and the rotating ring 430 connected together are installed at the end of the connecting rod 420;

[0102] The blood vessel 600 is passed through the blood vessel groove hole 110, the broken end of the blood vessel 600 is everted, and is hooked on the lead needle 200 of the anastomosis ring 100 one by one, so as to complete the eversion operation of the intima of the blood vessel 600;

[0103] The above steps are repeated, and the other broken end of the blood vessel 600 is hooked on the other anastomosis ring 100 of the same type;

[0104] The two clamp arms 410 are engaged so that the two anastomosis rings 100 are first closed and then close to each other, and the lead needle 200 of one of the two anastomosis rings 100 is inserted into the needle hole 130 of the other, and then the clamp is removed to knot the suture 300, so as to realize the suture;

[0105] The clamp is installed, the two clamp arms 410 are loosened, the two anastomosis rings 100 are separated, and then the two anastomosis rings 100 are taken off from the two rotating clamps 500, and then each anastomosis ring 100 is split into two anastomosis half rings 140, so as to realize the dismounting of the anastomosis ring 100 from the blood vessel 600, that is, the eversion anastomosis operation of the blood vessel 600 is completed.

[0106] Obviously, the above embodiments are only examples for clearly illustrating, and are not limited to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the invention.

Claims

1. A microvascular anastomosis device, characterized by: The application relates to an anastomosis ring and a clamp. The anastomosis ring comprises two anastomosis rings arranged face to face, and an axial through blood vessel slot hole is arranged in the anastomosis ring; a plurality of insertion needle holes and a plurality of needle penetrating holes are arranged on one side of the two anastomosis rings close to each other, the plurality of insertion needle holes and the plurality of needle penetrating holes are distributed in a circumferential direction, and the needle penetrating hole is an axial through hole; a plurality of lead needles are connected in the insertion needle holes of the two anastomosis rings, and a suture is connected to the tail end of the insertion needle hole; the clamp comprises a clamp and two rotating mechanisms, the clamp comprises two hinged clamp arms, the clamp arms are connected with the rotating mechanisms, and the two rotating mechanisms are rotated to open and close relative to the clamp arms; wherein the two anastomosis rings are connected with the two rotating mechanisms respectively, the two clamp arms drive the two anastomosis rings to rotate to open and close until parallel, the two clamp arms drive the two anastomosis rings to be close to each other, the lead needle of one of the two anastomosis rings is inserted into the needle penetrating hole of the other anastomosis ring; the rotating mechanism comprises a connecting rod, a rotating ring and a dial; the connecting rod is symmetrically arranged on both sides of the clamp, the two clamp arms of the clamp are arranged in an X shape and are hinged at the intersection of the two clamp arms through a first central shaft; one of the two clamp arms on the same side of the first central shaft is hinged with the bottom end of the connecting rod through a second central shaft, and the other clamp arm is hinged with the middle part of the connecting rod through a third central shaft; the connecting rod is provided with a sliding groove extending in the axial direction of the connecting rod, and the third central shaft slides back and forth in the sliding groove; the dial is connected to the top end of the clamp arm; the bottom end of the rotating ring is provided with a cam protruding from the lower surface of the rotating ring, the lower surface of the cam is arc-shaped, and the two ends of the arc-shaped surface have a drop along the axial direction of the rotating ring; wherein the rotating ring is sleeved on the top end of the connecting rod and rotates in a circumferential direction relative to the connecting rod; the cam of the rotating ring is in contact with the dial.

2. The microvascular anastomosis apparatus of claim 1, wherein: The anastomosis ring comprises two anastomosis half-rings, and the two anastomosis half-rings are radially closed to form the anastomosis ring.

3. The microvascular anastomosis apparatus of claim 2, wherein: The two anastomosis half-rings are closed in the anastomosis ring to form a joint line, and the joint lines of the two anastomosis rings intersect; one of the two anastomosis rings is provided with a through hole, and the other anastomosis ring is provided with a fixing needle penetrating into the through hole.

4. The microvascular anastomosis device of claim 1, wherein: A wire winding groove is arranged at a position outside the insertion needle hole in the anastomosis ring, the wire winding groove is an annular groove, a suture is wound in the wire winding groove, and one end of the suture is connected with the lead needle.

5. The microvessel anastomosis apparatus according to any one of claims 1 to 4, characterized by: A slot hole is arranged on one side of the needle penetrating hole in the anastomosis ring, and the slot hole is communicated to the outside of the anastomosis ring.

6. The microvascular anastomosis apparatus of claim 1, wherein: The rotating mechanism further comprises a limiting pin and a limiting groove; the limiting pin is fixed to the outer wall of the connecting rod; the limiting groove penetrates the wall of the rotating ring in the circumferential direction of the rotating ring; wherein the limiting pin is located in the limiting groove.

7. The microvascular anastomosis apparatus of claim 6, wherein: The bottom of the rotating ring is provided with an axial extending connecting groove, and the connecting groove is communicated with the limiting groove.

8. The microvascular anastomosis apparatus of any of claims 6-7, wherein: The top end of the two rotating mechanisms is connected with a rotating clamping part, the rotating clamping part is provided with a clamping opening, and the inner wall of the clamping opening is provided with a protruding clamping table; the middle part of the outer wall of the anastomosis ring is provided with a ring groove, the anastomosis ring is located in the clamping opening, and the clamping table is clamped in the ring groove.

9. The microvascular anastomosis device according to claim 1, wherein: The anastomosis ring is made of plastic. The anastomosis ring is made of plastic.

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