CN116077122A - Microvascular anastomat and anastomosis method - Google Patents

Abstract

The invention relates to a microvascular anastomat and an anastomosis method, comprising the following steps: two anastomotic rings arranged face to face, a plurality of lead pins and clamping pliers; the anastomotic ring is provided with a vascular slot hole which is axially communicated; a plurality of pin holes and a plurality of pin penetrating holes are formed in one side, close to each other, of each of the two anastomotic rings, the pin holes and the pin penetrating holes are circumferentially distributed at intervals, and the pin penetrating holes are axial through holes; the tail end of the pin hole is connected with a suture line; the clamping pliers comprise pliers and two rotating mechanisms, wherein the pliers comprise two hinged pliers arms, the pliers arms are connected with the rotating mechanisms, and the two rotating mechanisms are rotated to open and close relative to the pliers arms; the two anastomotic rings are respectively connected with the two rotating mechanisms, the two rotating mechanisms drive the two anastomotic rings to rotate and open and close until the two anastomotic rings are parallel, the two forceps arms drive the two anastomotic rings to approach each other, and the needle threading of one of the two anastomotic rings is inserted into the needle threading hole of the other anastomotic ring. The invention can easily align and lock the two anastomotic rings together, and has convenient, fast and accurate operation.

Description

A microvascular stapler and anastomotic method

technical field

The invention relates to the technical field of medical surgical instruments, in particular to a microvascular stapler and a stapler method.

Background technique

In various surgical operations, vascular anastomosis is a necessary operation item. Vascular anastomosis usually includes two methods of manual suture and anastomosis using an anastomotic ring. Regardless of which method is used, the key to vascular anastomosis is that the vascular intima should be anastomosed in an everted state, so as to avoid possible contact between the vascular intima and foreign bodies at the vascular junction.

Vascular anastomosis in surgery usually includes two methods of manual suture and mechanical anastomosis using an anastomotic ring, and the traditional needle-and-thread anastomosis is still the main method. Vascular anastomosis with sutures is a currently recognized standard method for vascular anastomosis, and it is also the most commonly used method of vascular anastomosis in daily clinical practice.

After more than 100 years of development, this technique has been widely used in surgical operations, such as in plastic surgery, hepatobiliary surgery, cardiothoracic surgery, urology and many other fields. , require the use of vascular anastomosis techniques. Manual suturing has the advantages of simple tools and a wide range of applications, but the suturing skills have high requirements for doctors. Doctors who can master the technique of microsurgical vascular anastomosis need at least 3 to 5 years of basic microsurgery training and experience accumulation. It is a doctor with long-term surgical training and skilled skills. Due to the long operation time (average of 5-8 hours for one operation), it will be greatly affected in many aspects such as physical strength, energy, psychology, and emotions, which may lead to operation failure. . In addition, manual suture sutures are easily exposed to blood vessels, which will interfere with the normal flow of blood, and anastomotic stoma inversion will increase the risk of thrombus. Human blood vessels have corresponding elasticity, stretching and contracting in the tissue, and it is difficult to accurately locate them by manual suture, so it is easy to cause problems such as not tight suture, too deep or too shallow suture, too tight or too loose suture, etc., resulting in blood at the junction Leakage; the influence of stitches and threads after the operation can easily lead to the formation of thrombus and even the failure of the operation.

Vascular mechanical anastomosis is a vascular anastomosis method in which a special blood anastomosis device replaces or partially replaces sutures. These mechanical vascular anastomosis methods can well avoid the disadvantages caused by manual sutures, but the volume of vascular anastomotic rings is generally relatively small, the precision requirements are high, and the installation is not accurate, resulting in difficult and unreliable installation. question. For example, the wheel-type anastomotic ring has the advantages of standardized, uniform, and standard operation, no intima wound, no anastomotic leakage, and no anastomotic stenosis. The multi-needle mandrel suturing instrument is a semi-manual and semi-instrument. Although the suturing times of single needle and single thread are reduced, the number of manual knotting after suturing is not reduced, and the various defects of manual suturing are not overcome.

Chinese patent CN113069164A discloses that the present invention relates to a detachable and reusable microvascular stapler and its usage method. The stapler includes two half-button bodies that can be engaged with each other; the main body of the half-button body is a semi-cylindrical body, and an axially penetrating semicircular groove is opened on the inner surface of the half-button body. A number of tooth-shaped ribs protruding from the outer circular surface are provided on the front section of the half-button body. The tooth-shaped ribs diverge from the center to the outside. Connecting holes, the tooth-shaped ribs of the fixing pins and the tooth-shaped ribs with the insertion holes are arranged at intervals, and the fixing pins protrude from the front end of the tooth-shaped ribs in the axial direction; two adjacent tooth-shaped ribs A triangular space is formed with the tip pointing to the root of the tooth-shaped ridge, and an axial hole-shaped groove for inserting a suture needle is arranged at the tip of the triangular space. The invention can realize valgus anastomosis, can be removed from the blood vessel after the suturing is completed, and the cost and selling price are reduced, thereby reducing medical expenses.

But it has the following problems: 1. The stapler is very small and it is difficult to buckle the two staplers together, which makes it difficult to insert the fixing needle into the needle hole on the opposite side, which is inconvenient and quick to use; 2. It is not convenient to pass the blood vessel through the anastomosis Eversion after the device.

Contents of the invention

For this reason, the technical problem to be solved by the invention is to overcome the difficulty in buckling the two staplers together in the prior art, resulting in the fact that the fixing needle is difficult to insert into the pinhole on the opposite side, which is inconvenient and quick to use; and it is not convenient to thread the blood vessel. Eversion after passing the stapler.

In order to solve the above technical problems, on the one hand, the present invention provides a microvascular stapler, comprising:

Two anastomotic rings are arranged facing each other, and the anastomotic ring is provided with an axially penetrating blood vessel slot; the sides of the two anastomotic rings that are close to each other are provided with multiple needle insertion holes and multiple needle penetration holes, and multiple needle insertion holes The holes and the plurality of needle holes are distributed at intervals along the circumferential direction, and the needle holes are axial through holes;

A plurality of guide needles are connected in the needle holes of the two anastomotic rings, and the tail ends of the needle holes are connected with sutures;

Clamping pliers, including pliers and two rotating mechanisms, the pliers include two hinged pliers arms, the pliers arms are connected with the rotating mechanisms, and the two rotating mechanisms rotate to open and close relative to the pliers arms;

Wherein, the two anastomotic rings are respectively connected with two rotating mechanisms, the engagement of the two pliers arms drives the two anastomotic rings to rotate and open until they are parallel, the two pliers arms drive the two anastomotic rings to approach each other, and one of the two anastomotic rings The lead needle is inserted in the needle hole of the other.

In some embodiments of the present invention, the anastomotic ring includes two anastomotic half-rings, and the two anastomotic half-rings are joined radially to form an anastomotic ring.

In some embodiments of the present invention, two anastomotic half-rings are combined to form a joint line in the anastomotic ring, and the joint lines of the two anastomotic rings intersect;

Among the two anastomotic rings, one is provided with a passing hole, and the other is provided with a fixing needle inserted into the passing hole.

In some embodiments of the present invention, the anastomotic ring is provided with a wire groove at a position outside the pin hole, and the wire groove is an annular groove; the disk in the wire groove is provided with a suture, and one end of the suture is connected to the lead needle. connect.

In some embodiments of the present invention, the anastomotic ring is provided with a slot-shaped hole on one side of the needle hole, and the slot-shaped hole communicates with the outside of the anastomotic ring.

In some embodiments of the present invention, the rotating mechanism includes a connecting rod, a rotating ring and a dial;

The connecting rods are symmetrically arranged on both sides of the pliers. The two pliers arms of the pliers are arranged in an X shape and hinged at the intersection of the two pliers arms through the first central axis; One of them is hinged with the bottom end of the connecting rod through the second central axis, and the other is hinged with the middle of the connecting rod through the third central axis; the connecting rod is provided with a chute extending along its axial direction, and the third central axis is Slide back and forth in the chute;

The dial is connected to the top of the clamp arm;

The bottom end of the rotating ring is provided with a cam protruding from its lower surface, the lower surface of the cam is arc-shaped, and the two ends of the arc have a drop along the axial direction of the rotating ring;

Wherein, the rotating ring is sleeved on the top of the connecting rod, and rotates along the circumferential direction relative to the connecting rod; the cam of the rotating ring is in contact with the dial wheel.

In some embodiments of the present invention, the rotating mechanism further includes a limiting nail and a limiting groove; the limiting nail is fixed on the outer wall of the connecting rod; the limiting groove penetrates the wall of the rotating ring along the circumferential direction of the rotating ring;

Wherein, the limiting nail is located in the limiting groove.

In some embodiments of the present invention, the bottom of the rotating ring is provided with an axially extending connecting groove, and the connecting groove communicates with the limiting groove.

In some embodiments of the present invention, the top ends of the two rotating mechanisms are 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 card table;

An annular groove is arranged in the middle of the outer wall of the anastomotic ring, the anastomotic ring is located in the clamping mouth, and the clamping table is clamped in the annular groove.

In some embodiments of the present invention, the pliers also includes two locking rods, the two locking rods are respectively connected to the inner sides of the two pliers arms, the free ends of the locking rods are provided with teeth, and the two locking rods meshing of teeth.

In some embodiments of the invention, the anastomotic ring is made of plastic.

On the other hand, the invention provides a method for microvascular anastomosis, including: using the microvascular stapler in the above-mentioned embodiment to perform microvascular suturing, and the specific steps include:

The initial meshing of the two arms of the pliers drives the two anastomotic rings to rotate with the two rotating mechanisms until the two anastomotic rings face to face and are parallel;

The two pliers arms of the pliers continue to engage to drive the two anastomotic rings close to each other until the guide needle of one of the two anastomotic rings is inserted in the needle hole of the other.

Compared with the prior art, the above-mentioned technical solution of the invention has the following advantages:

The two blood vessels invented pass through the blood vessel slots of the two anastomotic rings respectively, and the broken ends of the blood vessels are turned outwards and hooked on the guide needles of the anastomotic rings one by one. The two forceps arms drive the two anastomotic rings to rotate with the two. The mechanism rotates until it is parallel, and then the two forceps arms drive the two anastomotic rings to approach each other until the lead needle of one of the two anastomotic rings is inserted into the needle hole of the other, and then one of the two anastomotic rings is pulled out. the leader needle of the one and tie a knot on the side of the other to complete the suture. The two anastomotic rings of the present application realize the alignment and fastening of the two anastomotic rings through the engagement of the two pliers arms, and the two anastomotic rings are easily aligned and fastened together, and the operation is convenient, fast and accurate, thereby further improving the suturing efficiency and suturing efficiency. Secondly, when the two anastomotic rings are fastened in the present application, the two pliers arms firstly drive the two anastomotic rings to rotate with the two rotating mechanisms until they are parallel, so that the fronts of the two anastomotic rings open outwards towards the direction of the operator, which is convenient The operator passes the blood vessel through the blood vessel slots of the two anastomotic rings, and it is convenient for the operator to turn out the broken end of the blood vessel and hook it on each guide needle of the anastomotic ring. It can be seen that, on the one hand, the application is convenient for the operator On the other hand, the axis of the present application connects the forceps arm with the anastomotic ring, then passes the blood vessel through the blood vessel slot and hangs the broken end of the blood vessel on the guide needle, which ensures the relative alignment of the two anastomotic rings. After positioning, the blood vessel is perforated and the hook of the broken end of the blood vessel is hooked on the guide needle, so that the quality and efficiency of blood vessel suture can be further ensured under the premise of making the alignment of the two anastomotic rings easier. In addition, the present application realizes the change of the angle between the two anastomotic rings through the rotation of the rotating mechanism, so that the angle between the two anastomotic rings can be adjusted to the maximum by rotating the rotating mechanism when penetrating into the blood vessel. Rotate the rotating mechanism to gradually reduce the angle between the two anastomotic rings until they are parallel, and finally rotate the rotating mechanism to make the two anastomotic rings approach each other for suturing. Again, after the broken end of the blood vessel is everted in the present invention, it is directly hooked on the guide needle, and then the suture of the blood vessel is realized by pulling out the guide needle, so that the suture can be realized without causing additional wounds to the broken end of the blood vessel.

Description of drawings

In order to make the content of the invention easier to understand clearly, the invention will be described in further detail below according to specific embodiments of the invention in conjunction with the accompanying drawings, wherein

Fig. 1 is a three-dimensional schematic diagram of an inventive microvascular stapler.

Fig. 2 is a schematic view of the back of the microvascular stapler invented in Fig. 1 .

Fig. 3 is a schematic structural view of the anastomotic ring in the microvascular stapler of the invention in Fig. 1 .

Fig. 4 is an alternative schematic diagram of the microvascular stapler of the invention in Fig. 3 .

Fig. 5 is another alternative schematic view of the microvascular stapler in Fig. 3 .

Fig. 6 is a schematic structural view of the clamping forceps in the microvascular stapler of the invention shown in Fig. 1 .

Fig. 7 is a schematic diagram of the operation of a microvascular anastomosis method invented in Fig. 1 .

Fig. 8 is a schematic diagram of the operation of the anastomosis ring in the microvascular anastomosis method of the invention in Fig. 1 .

Explanation of reference numerals in the manual: 100, anastomotic ring; 100a, first anastomotic ring; 100b, second anastomotic ring; 110, blood vessel slot; 120, pin hole; 130, needle hole; 140, anastomotic half ring; 141 , bonding line; 141a, first bonding line; 141b, second bonding line; 141c, third bonding line; 141d, fourth bonding line; 150, through hole; 160, fixing needle; 161, protrusion; Groove; 180, cable trough; 190, slot hole;

200, lead needle;

300, suture thread;

400, clamping pliers; 410, pliers arm; 411, first central axis; 412, second central axis; 413, third central axis; 420, connecting rod; 421, chute; 430, rotating ring; 431, cam ; 431a, the first end; 431b, the second end; 432, the connecting groove; 440, the dial; 450, the limiting nail; 460, the limiting groove;

500, rotating clamping part; 510, clamping mouth; 511, card table; 512, annular groove;

600. Blood vessels.

Detailed ways

The invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the invention and implement it, but the examples given are not intended to limit the invention.

Referring to Figures 1 to 2, the invention provides a microvascular stapler, including: including:

The two anastomotic rings 100 are arranged facing each other, and the anastomotic ring 100 is provided with a blood vessel slot 110 through which the axial direction passes, and the blood vessel slot 110 is a circular hole; the sides of the two anastomotic rings 100 that are close to each other are provided with a plurality of insertion holes. The pinhole 120 and the multiple pinholes 130, the multiple pinholes 120 and the multiple pinholes 130 are distributed at intervals along the circumferential direction, and the pinholes 130 are axial through holes;

A plurality of lead needles 200 are connected in the needle holes 120 of the two anastomotic rings 100 and pulled out from the needle insertion holes 120, and the tail ends of the needle holes 120 are connected with a suture thread 300;

The clamping pliers 400 includes pliers and two rotating mechanisms, the pliers include two hinged pliers arms 410, the pliers arms 410 are connected to the rotating mechanisms, and the two rotating mechanisms rotate and open relative to the pliers arms 410;

Wherein, the two anastomotic rings 100 are respectively connected with two rotating mechanisms, and the engagement of the two tong arms 410 drives the two anastomotic rings 100 to rotate and open until they are parallel, and the two tong arms 410 drive the two anastomotic rings 100 to approach each other, and the two anastomotic rings 100 are close to each other. The lead needle 200 of one of the loops 100 is inserted into the needle hole 130 of the other. For the convenience of the following description, the two anastomotic rings 100 are respectively referred to as the first anastomotic ring 100a and the second anastomotic ring 100b; Pair setting, the guide wire needle 200 of the first anastomotic ring 100a and the guide wire needle 200 of the second anastomotic ring 100b are arranged in a circumferential direction, the needle hole 130 of the first anastomotic ring 100a and the needle hole 130 of the second anastomotic ring 100b misaligned in the circumferential direction.

Specifically, the two blood vessels 600 of the present invention pass through the blood vessel slots 110 of the two anastomotic rings 100 respectively, and the broken ends of the blood vessels 600 are turned outwards and hooked on the guide needles 200 of the anastomotic ring 100 one by one. The arm 410 drives the two anastomotic rings 100 to rotate with the two rotating mechanisms until they are parallel, and then the two forceps arms 410 drive the two anastomotic rings 100 to approach each other until the lead needle 200 of one of the two anastomotic rings 100 is inserted into the other. Then pull out the guide needle 200 of one of the two anastomotic rings 100 and tie a knot on the side of the other to complete the suture. The two anastomotic rings 100 of the present application realize the alignment and fastening of the two anastomotic rings 100 through the engagement of the two forceps arms 410, and the two anastomotic rings 100 are easily aligned and fastened together, and the operation is convenient, fast and accurate, thereby further improving the suturing efficiency and sewing efficiency. Secondly, in this application, when the two anastomotic rings 100 are fastened, the two forceps arms 410 drive the two anastomotic rings 100 to rotate with the two rotating mechanisms until they are parallel, so that the fronts of the two anastomotic rings 100 face outward toward the operator. Opening, it is convenient for the operator to pass the blood vessel 600 through the blood vessel slots 110 of the two anastomotic rings 100, and it is convenient for the operator to evert the broken end of the blood vessel 600 and hook it on each guide needle 200 of the anastomotic ring 100, by It can be seen that, on the one hand, the application is convenient for the operator to use; on the other hand, the axis of the application connects the forceps arm 410 with the anastomotic ring 100, and then the blood vessel 600 passes through the blood vessel slot 110 and the broken end of the blood vessel 600 is hooked outwards. Hanging on the introduction needle 200, after ensuring the relative position of the two anastomotic rings 100, the blood vessel 600 is passed through and the broken end of the blood vessel 600 is everted. On the premise of ease, the quality and efficiency of blood vessel 600 suturing are further guaranteed. In addition, the present application realizes the change of the angle between the two anastomotic rings 100 through the rotation of the rotating mechanism, so that when the blood vessel 600 is penetrated, the angle between the two anastomotic rings 100 is adjusted to the maximum by rotating the rotating mechanism, and the penetration After the blood vessel 600 reversely rotates the rotating mechanism to gradually reduce the angle between the two anastomotic rings 100 until they are parallel, and finally rotate the rotating mechanism to make the two anastomotic rings 100 approach each other for suturing. Once again, the broken end of the blood vessel 600 in the present invention is directly hooked on the guide needle 200 after eversion, and then the suture of the blood vessel 600 is realized by pulling out the guide needle 200, and the suture can not cause additional damage to the broken end of the blood vessel 600. Wound.

Referring to FIG. 3 , further, the anastomotic ring 100 includes two anastomotic half-rings 140 , and the two anastomotic half-rings 140 are aligned radially to form the anastomotic ring 100 . Each of the two anastomotic half-rings 140 is provided with a half blood vessel slot 110 .

Specifically, the anastomotic ring 100 in this embodiment is formed by abutment of two anastomotic half-rings 140 , which facilitates passing the blood vessel 600 through the blood vessel slot 110 .

Continuing to refer to FIG. 3 , further, two anastomotic half-rings 140 are mated to form a joint line 141 in the anastomotic ring 100, and the joint line 141 of the two anastomotic rings 100 intersects, for example, the joint line 141 of the two anastomotic rings 100 is ten glyph intersect;

Among the two anastomotic rings 100 , one is provided with a passing hole 150 , and the other is provided with a fixing pin 160 inserted into the passing hole 150 .

Specifically, the joining line 141 of the two anastomotic rings 100 in the present embodiment intersects, and the fixing pin 160 of one of the two anastomotic half-rings 140 penetrates the passing hole 150 of the other, thereby realizing two anastomosis Relatively fixed connection of the ring 100. The structure is simple, and it is convenient for mutual fixing and mutual separation.

Referring to FIG. 4 , in some possible implementations, the two anastomotic half-rings 140 of this embodiment are mated to form two bonding lines 141 in the anastomotic ring 100 , and the bonding lines 141 of the two anastomotic rings 100 are misaligned with each other in the circumferential direction. Arrangement; For example, the two anastomotic half-rings 140 of the first anastomotic ring 100a form the first joint line 141a and the second joint line 141b, and the two anastomotic half-rings 140 of the second anastomotic ring 100b form the third joint line 141c and the second joint line 141b. Four bonding lines 141d; the first bonding line 141a, the second bonding line 141b, the third bonding line 141c and the fourth bonding line 141d, the four are mutually misaligned in the circumferential direction. In this way, the blood vessel 600 is prevented from being subjected to radial pressure of the anastomotic ring 100 , thereby preventing the blood vessel 600 from being damaged by external force.

Among the two anastomotic half-rings 140 , one is provided with a passing hole 150 , and the other is provided with a fixing pin 160 passing through the passing hole 150 .

Referring to FIG. 5 , further, the front end of the fixing pin 160 is provided with a tapered head.

Specifically, the tapered head facilitates the penetration of the fixation pin 160 into the through hole 150 .

Continuing to refer to FIG. 5 , further, the front end of the lead needle 200 is provided with a tapered head.

Specifically, the tapered head facilitates the threading of the introducer needle 200 into the needle-through hole 130 .

Continuing to refer to FIG. 5 , further, the front end of the fixing pin 160 is provided with a tapered head. The front end of the lead wire needle 200 is provided with a conical head.

Continuing to refer to FIG. 5 , further, the fixing pin 160 is provided with a protrusion 161 protruding from its outer wall, and the protrusion 161 is in an interference fit with the passage hole 150 .

Specifically, in this embodiment, a protrusion 161 is provided on the fixing pin 160. The outer diameter of other parts of the fixing pin 160 is smaller than the inner diameter of the passing hole 150, and the outer diameter of the protrusion 161 is greater than the inner diameter of the passing hole 150, which facilitates the fixing of the needle. 160 penetrates through the hole 150, after the fixed needle 160 passes through the hole 150, the protrusion 161 interferes with the through hole 150, so as to prevent the two anastomotic rings 100 from moving in the axial direction during the suturing process and affecting the suture.

Continuing to refer to FIG. 5 , further, the distance between the fixing needle 160 and the center of the blood vessel slot 110 is greater than the distance between the guide needle 200 and the center of the blood vessel slot 110 . That is to say, the fixing needle 160 is arranged on the outer circle compared with the threading needle 200 .

Specifically, the distance between the fixing needle 160 and the center of the blood vessel slot 110 in this embodiment is greater than the distance between the guide needle 200 and the center of the blood vessel slot 110, so that after the broken end of the blood vessel 600 is everted, it is directly hooked on the guide needle 200, It will not be hooked on the fixing needle 160, reducing damage to the broken end of the blood vessel 600.

Continuing to refer to FIG. 5 , further, one side of the pin insertion hole 120 of the anastomotic ring 100 is provided with a communication groove 170 communicating with the pin insertion hole 120 ;

Specifically, in this embodiment, a communication groove 170 is provided on the anastomotic ring 100 , and the setting of the communication groove 170 is convenient for pulling out the guide needle 200 from the needle insertion hole 120 for suturing.

Continuing to refer to FIG. 5 , further, the anastomotic ring 100 is provided with a cable groove 180 outside the pin hole 120 , the cable groove 180 is an annular groove 512 , and the cable groove 180 passes through the connecting groove 170 and the pin hole 120 Connected; the disk in the wire slot 180 is provided with a suture 300 , and one end of the suture 300 is connected with the lead needle 200 .

Specifically, the present embodiment is provided with a coiling groove 180, so that the suture 300 can be coiled in the coiling 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 it, which is more convenient to use fast.

Continuing to refer to FIG. 5 , further, the anastomotic ring 100 is provided with a slotted hole 190 on one side of the needle hole 130 , and the slotted hole 190 communicates with the outside of the anastomotic ring 100 .

Specifically, the present embodiment is provided with a slotted hole 190, which is convenient to pull back one end of the suture 300 connected to the guide needle 200 from the slotted hole 190 after the blood vessel 600 is sutured, and connects with the suture located in the wire slot 180. The other end of the 300 is knotted.

Referring to FIG. 1 , FIG. 2 and FIG. 6 , further, the rotating mechanism includes a connecting rod 420 , a rotating ring 430 and a dial 440 ;

The connecting rod 420 is arranged symmetrically on both sides of the pliers. The two pliers arms 410 of the pliers are arranged in an X shape and hinged at the intersection of the two pliers arms 410 through the first central axis 411. The central axis is a pin shaft; located in the first center The two pincer arms 410 on the same side of the shaft 411, one of them is hinged with the bottom end of the connecting rod 420 by the second central axis 412, and the other is hinged with the middle part of the connecting rod 420 by the third central axis 413; the connecting rod 420 is provided with a chute 421 extending along its axial direction, and the third central shaft 413 slides back and forth in the chute 421;

The dial 440 is connected to the top of the pliers arm 410;

The bottom end of the rotating ring 430 is provided with a cam 431 protruding from its lower surface. The lower surface of the cam 431 is arc-shaped, and the two ends of the arc have a drop along the axial direction of the rotating ring 430, that is, a position difference; for the convenience of the following The description refers to the two ends as a first end 431a and a second end 431b, respectively, the first end 431a being axially closer to the anastomotic ring 100 relative to the second end 431b.

Wherein, the rotating ring 430 is sleeved on the top of the connecting rod 420 and rotates in a circumferential direction relative to the connecting rod 420 ; the cam 431 of the rotating ring 430 is in contact with the dial 440 .

Specifically, in this embodiment, the two pliers arms 410 are engaged so that the third central shaft 413 moves in the sliding groove 421, thereby driving the cam 431 to move to the lower surface of the rotating ring 430 from the second end 431b to the first end 431a. , so that the anastomotic ring 100 is driven to rotate around the connecting rod 420 with the rotating ring 430 , and when the third central axis 413 slides to the top of the chute 421 , the two anastomotic rings 100 are parallel. Then continue to engage the two forceps arms 410 , at this time, the two anastomotic rings 100 approach each other to suture the blood vessel 600 . It can be seen that this embodiment is more convenient to operate, and has high sewing quality and efficiency.

Continue to refer to FIG. 1 , FIG. 2 and FIG. 6 , further, the rotation mechanism also includes a limiting nail 450 and a limiting groove 460; the limiting nail 450 is fixed on the outer wall of the connecting rod 420; To the wall body that runs through the rotating ring 430;

Wherein, the limiting nail 450 is located in the limiting groove 460 .

Specifically, this embodiment is provided with a limiting nail 450 and a limiting groove 460, and the limiting nail 450 is located in the limiting groove 460, so that the cooperation of the limiting nail 450 and the limiting groove 460 provides for the rotation of the rotating ring 430 on the one hand. On the other hand, the rotating ring 430 is restricted from moving in the axial direction during the rotation.

Continuing to refer to FIG. 1 , FIG. 2 and FIG. 6 , further, the bottom of the rotating ring 430 is provided with an axially extending connecting groove 432 , and the connecting groove 432 communicates with the limiting groove 460 .

Specifically, this embodiment is provided with a connecting groove 432 communicating with the limiting groove 460, so that the rotating ring 430 of the anastomotic ring 100 is separated from the connecting rod 420 before use, and the anastomotic ring 100 is first installed on the rotating ring 430 during use. Then the rotating ring 430 is installed on the connecting rod 420, so that the rotating ring 430 and the anastomotic ring 100 connected to the rotating ring 430 are disposable products, while the pliers and the connecting rod 420 connected to the pliers are reusable parts . Since the area of the anastomotic ring 100 is relatively small, if the operator installs the anastomotic ring 100 on the rotating ring 430 on site, it will be difficult to install and reduce the operation efficiency. However, in this embodiment, the anastomotic ring 100 is installed on the rotating ring 430 in advance. When in use, only the connecting groove 432 of the rotating ring 430 is placed on the limit nail 450, and then the rotating ring 430 is pulled down and then rotated to make the rotating ring 430 It is sufficient that the limiting nail 450 is stuck in the limiting groove 460 . Easy for operators to use quickly.

Continuing to refer to Fig. 1, Fig. 2 and Fig. 6, further, the top ends of the two rotating mechanisms are connected with a rotating clamping part 500, the rotating clamping part 500 is provided with a clamping port 510, and the inner wall of the clamping port 510 is provided with a convex Out of the card table 511;

An annular groove 512 is provided in the middle of the outer wall of the anastomotic ring 100 , the anastomotic ring 100 is located in the clamping opening 510 , and the locking platform 511 is clamped in the annular groove 512 .

Specifically, in this embodiment, the connection between the anastomotic ring 100 and the rotating mechanism is realized through the cooperation of the card table 511 and the annular groove 512, and the anastomotic ring 100 is removed from the blood vessel 600 after the blood vessel 600 is sutured, so as to prevent the anastomotic ring 100 from remaining in the blood vessel. 600 on.

Continuing to refer to Fig. 1, Fig. 2 and Fig. 6, further, the pliers also includes two locking rods 470, the two locking rods 470 are respectively connected to the inner sides of the two pliers arms 410, and the free ends of the locking rods 470 are provided with There are teeth 471, and the teeth 471 of the two locking levers 470 are engaged.

Specifically, the setting of the locking lever 470 in this embodiment enables the two pliers arms 410 to form a pulling force with each other, thereby preventing the two pliers arms 410 from over-tensioning and affecting the normal use of the rotation mechanism.

Further, the anastomotic ring 100 is made of plastic. For example: the material of the anastomotic ring 100 can be PEEK, polytetrafluoroethylene or nylon.

In some possible embodiments, the anastomotic ring 100 can be made of metal. For example, the material of the anastomotic ring 100 may be titanium alloy or 316L stainless steel.

Referring to Figures 7 to 8, the invention provides a microvascular anastomosis method 600, using the microvascular stapler in the above embodiment to perform microvascular suturing, the specific steps include: including:

The initial meshing of the two pliers arms 410 drives the two anastomotic rings 100 to rotate with the two rotating mechanisms until the two anastomotic rings 100 face to face and are parallel;

The two pliers arms 410 of the pliers continue to engage to drive the two anastomotic rings 100 close to each other until the guide needle 200 of one of the two anastomotic rings 100 is inserted into the needle hole 130 of the other.

Continuing to refer to FIGS. 7 to 8 , further, install the connected anastomotic ring 100 , the rotating clamping part 500 and the rotating ring 430 on the end of the connecting rod 420 ;

Pass through the blood vessel 600 to be sutured along the blood vessel slot 110, turn the stumps of the blood vessel 600 eversion, and hook them on the guide needles 200 of the anastomotic ring 100 one by one, to complete the eversion operation of the intima of the blood vessel 600;

Repeat the above steps to hook the other broken end of the blood vessel 600 on another anastomotic ring 100 of the same type;

Engage the two forceps arms 410 so that the two anastomotic rings 100 are first closed and then approach each other. As the two anastomotic rings 100 approach gradually, the guide wire needle 200 of one is inserted into the needle hole 130 of the other, Then take off the clamping forceps and knot the suture thread 300, thereby realizing suturing;

Put on the clamping pliers and loosen the two pliers arms 410, so that the two anastomotic rings 100 are separated, then respectively remove the two anastomotic rings 100 from the two rotating clamping parts 500, and then disassemble each anastomotic ring 100 There are two anastomotic half-rings 140, so that the anastomotic ring 100 can be removed from the blood vessel 600, that is, the eversion anastomosis of the blood vessel 600 can be completed.

Apparently, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in various forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. The obvious changes or changes derived from this are still within the scope of protection of inventions and creations.

Claims (11)

1. A microvascular stapler, characterized in that: comprising: Two anastomotic rings are arranged facing each other, and the anastomotic rings are provided with blood vessel slots that pass through axially; the sides of the two anastomotic rings that are close to each other are provided with a plurality of needle insertion holes and a plurality of needle insertion holes, The plurality of pin holes and the plurality of pin holes are distributed along the circumferential interval, and the pin holes are axial through holes; A plurality of guide needles are connected in the pin holes of the two anastomotic rings, and the tail ends of the pin holes are connected with sutures; Clamping pliers, including pliers and two rotating mechanisms, the pliers include two hinged pliers arms, the pliers arms are connected to the rotating mechanisms, and the two rotating mechanisms rotate to open and close relative to the pliers arms; Wherein, the two anastomotic rings are respectively connected with the two rotating mechanisms, the engagement of the two tong arms drives the two anastomotic rings to rotate and open until they are parallel, and the two tong arms drive the two anastomotic rings to The rings are close to each other, and the guide needle of one of the two anastomotic rings is passed through the needle hole of the other. 2 . The microvascular stapler according to claim 1 , wherein the anastomotic ring comprises two anastomotic half-rings, and the two anastomotic half-rings are joined radially to form the anastomotic ring. 3 . 3. The microvascular stapler according to claim 2, characterized in that: the two anastomotic rings are combined to form a joint line in the anastomotic ring, and the joint lines of the two anastomotic rings intersect; Among the two anastomotic rings, one is provided with a passing hole, and the other is provided with a fixing needle penetrating through the passing hole. 4. The microvascular stapler according to claim 1, characterized in that: the anastomotic ring is provided with a wire groove at a position outside the pin hole, and the wire groove is an annular groove; the wire groove is an annular groove; A suture is arranged on the tray in the wire groove, and one end of the suture is connected with the lead needle. 5. The microvascular stapler according to any one of claims 1 to 4, characterized in that: the anastomotic ring is provided with a grooved hole on one side of the needle hole, and the grooved hole is connected to Outside the anastomotic ring. 6. The microvascular stapler according to claim 1, wherein the rotating mechanism comprises a connecting rod, a rotating ring and a dial; The connecting rods are arranged symmetrically on both sides of the pliers, and the two pliers arms of the pliers are arranged in an X shape and hinged at the intersection of the two pliers arms through a first central axis; Two pincer arms on the side, one of the two is hinged with the bottom end of the connecting rod through the second central axis, and the other is hinged with the middle part of the connecting rod through the third central axis; the connecting rod is provided with a chute extending axially along the chute, in which the third central shaft slides back and forth; The dial is connected to the top of the pliers arm; The bottom end of the rotating ring is provided with a cam protruding from its lower surface, the lower surface of the cam is arc-shaped, and the two ends of the arc 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 wheel. 7. The microvascular stapler according to claim 6, characterized in that: the rotating mechanism further comprises a limiting nail and a limiting groove; the limiting nail is fixed on the outer wall of the connecting rod; the limiting groove penetrating through the wall of the rotating ring along the circumferential direction of the rotating ring; Wherein, the limiting nail is located in the limiting groove. 8. The microvascular stapler according to claim 7, characterized in that: the bottom of the rotating ring is provided with an axially extending connecting groove, and the connecting groove communicates with the limiting groove. 9. The microvascular stapler according to any one of claims 6-8, characterized in that: the top ends of the two rotating mechanisms are connected with rotating clamping parts, and the rotating clamping parts are provided with clamping openings , the inner wall of the clamping mouth is provided with a protruding card table; The middle part of the outer wall of the anastomotic ring is provided with an annular groove, the anastomotic ring is located in the clamping opening, and the clamping table is clamped in the annular groove. 10. The microvascular stapler according to claim 1, wherein the anastomotic ring is made of plastic. 11. A microvascular anastomosis method, characterized in that: comprising: Use the microvascular stapler described in any one of rights 1 to 15 to perform microvascular suturing, and the specific steps include: The preliminary engagement of the two pliers arms of the pliers drives the two anastomotic rings to rotate with the two rotating mechanisms until the two anastomotic rings are face-to-face and parallel; The two pliers arms of the pliers continue to engage to drive the two anastomotic rings close to each other until the guide needle of one of the two anastomotic rings is inserted into the needle hole of the other.

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