CN219538396U - Clamping forceps for suturing of microvascular anastomat - Google Patents

Abstract

The utility model relates to a clamping forceps for suturing a microvascular anastomat, which comprises the following components: the pliers comprise two hinged pliers arms; the two rotating mechanisms are connected to the top ends of the clamp arms and are rotated to open and close relative to the axes of the clamp arms; the two rotary clamping parts are connected to the top end of the rotary mechanism; the two clamp arms are meshed to drive the rotating mechanism and the rotating clamping part to rotate, and the two rotating clamping parts are rotated to open and close and are close to each other. The two anastomotic rings are aligned and buckled through the meshing of the two clamp arms, so that the two anastomotic rings are easily aligned and buckled together, and the operation is convenient, fast and accurate, thereby further improving the suturing efficiency and the suturing efficiency. In addition, the blood vessel is convenient to penetrate into the anastomat.

Description

Clamping forceps for suturing of microvascular anastomat

Technical Field

The utility model relates to the technical field of medical surgical instruments, in particular to a clamping forceps for suturing a microvascular anastomat.

Background

Vascular anastomosis is a necessary procedure in various surgical procedures. Vascular anastomosis generally involves both manual suturing and anastomosis using an anastomotic ring. Regardless of the manner, the key to vascular anastomosis is that the anastomosis should be performed with the intima everted, thereby avoiding contact of the intima with foreign matter that may occur at the vessel interface.

Vascular anastomosis in surgery generally includes both manual suturing and mechanical anastomosis of blood vessels using an anastomotic ring, and is mainly based on the traditional needle and line anastomosis method. The vascular anastomosis by using the suture is a currently accepted standard vascular anastomosis method, and is also the most commonly used vascular anastomosis method in daily clinic.

The manual suturing method is widely used in surgical operations such as operations in various fields of plastic surgery, hepatobiliary surgery, cardiothoracic surgery, urological surgery and the like, and the vascular anastomosis technology is needed after the development of the manual suturing method for more than one hundred years. The manual suturing has the advantages of simple appliance, wide application range and the like, but the suturing skill has higher requirements on doctors, so that the doctors who are skilled in the microsurgery vascular anastomosis technology can achieve the purposes that the microsurgery basic training and experience accumulation are required for at least 3 to 5 years, and even the doctors who are skilled in technology and have long-time operation training can be greatly influenced in various aspects such as physical strength, energy, psychology, emotion and the like due to long operation time (an average operation time is 5 to 8 hours), and operation failure can be caused. In addition, manual suturing of sutures is prone to exposure to procedures that interfere with the normal flow of blood, inversion of the stoma, etc., and increase the risk of thrombosis. The human blood vessel has corresponding elasticity, stretches into tissues, and is difficult to accurately position by manual suture, so that the problems of unsmooth suture, too deep or too shallow suture, too tight or too loose suture and the like easily occur in the operation, and the blood leakage at the joint is caused; the effect of the suture and thread after surgery is likely to lead to thrombus formation and even surgical failure.

The vascular mechanical anastomosis is a vascular anastomosis method in which a special blood anastomosis device is used for replacing or partially replacing a suture, and is also called a vascular anastomosis ring method, and is generally divided into a sleeve method, a magnetic suction method, an anastomosis clamp method and a needle ring method. The mechanical vascular anastomosis method can well avoid the defects caused by manual suture, but the volume of the vascular anastomosis ring is generally smaller, the precision requirement is high, and the vascular anastomosis ring is not accurate in correspondence during installation, so that the problems of difficult installation and unstable installation are caused. For example, the wheel type anastomotic ring has the advantages of standard, unified and standard operation, no inner membrane wound surface, no anastomotic leakage, no anastomotic stoma stenosis and the like. The multi-needle mandrel stitching instrument is a semi-manual semi-instrument, and although the stitching times of a single needle and a single line are reduced, the manual knotting times after stitching are not reduced, and various defects of manual stitching are not overcome.

Chinese patent CN113069164a discloses that the present utility model relates to a detachable reusable microvascular anastomat and a method of use thereof. The anastomat comprises two half buckles which can be mutually involuted; the main body of the half buckle body is a semi-cylinder, an axially-through half slot is formed in the inner surface of the half buckle body, a involution clamping slot is formed in the slot edge of the half slot, a plurality of tooth-shaped ribs protruding out of the outer circular surface are arranged at the front section of the half buckle body, the tooth-shaped ribs are outwards divergent from the center, fixing needles or inserting holes are formed in the tooth-shaped ribs, the tooth-shaped ribs provided with the fixing needles are distributed at intervals with the tooth-shaped ribs provided with the inserting holes, and the fixing needles extend out of the front end surfaces of the tooth-shaped ribs along the axial direction; a triangular hollow space with the tip pointing to the root of the tooth-shaped rib is formed between two adjacent tooth-shaped ribs, and an axial hole groove for inserting a suture needle is formed at the tip of the triangular hollow space. The utility model can realize eversion anastomosis of the blood vessel, can be removed from the blood vessel after suturing, and reduces the cost and the selling price, thereby reducing the medical expense.

But it has the following problems: 1. because the anastomat is very small and the two anastomat are not easy to be buckled together, the fixing needle is difficult to be inserted into the needle hole on the opposite side, and the use is inconvenient and quick.

Disclosure of Invention

Therefore, the utility model aims to solve the technical problems that in the prior art, two anastomat are not easy to buckle together, so that a fixing needle is difficult to insert into a pinhole on the opposite side, and the use is inconvenient and quick.

In order to solve the technical problems, in one aspect, the present utility model provides a clamping forceps for suturing a microvascular anastomat, comprising:

the pliers comprise two hinged pliers arms;

the two rotating mechanisms are connected to the top ends of the clamp arms and are rotated to open and close relative to the axes of the clamp arms;

the two rotary clamping parts are connected to the top end of the rotary mechanism;

the two clamp arms are meshed to drive the rotating mechanism and the rotating clamping part to rotate, and the two rotating clamping parts are rotated to open and close and are close to each other.

In some embodiments of the utility model, the two arms of the pliers are arranged in an X-shape and are hinged at their intersection by a first central axis.

In some embodiments of the utility model, the rotation mechanism includes a connecting rod, a rotating ring, and a thumb wheel;

the connecting rods are symmetrically arranged on two sides of the pliers, two pliers arms are positioned on the same side of the first central shaft, one of the two pliers arms is hinged with the bottom end of the connecting rod through the second central shaft, and the other pliers arm is hinged with the middle part of the connecting rod through the third central shaft; the connecting rod is provided with a sliding groove extending along the axial direction of the connecting rod, and the third central shaft slides back and forth in the sliding groove;

the thumb wheel 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 are provided with drop heights along the axial direction of the rotating ring;

the rotary ring is sleeved at the top end 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 thumb wheel.

In some embodiments of the present utility model, at least one of the first center axis, the second center axis, and the third center axis is a pin.

In some embodiments of the utility model, the rotation mechanism further comprises a limit pin and a limit slot; the limit nails are fixed on the outer wall of the connecting rod; the limiting groove penetrates through the wall body of the rotating ring along the circumferential direction of the rotating ring;

wherein, the spacing nail is arranged in the spacing groove.

In some embodiments of the utility model, the bottom of the rotating ring is provided with an axially extending connecting groove, which communicates with the limiting groove.

In some embodiments of the utility model, the rotary clamping part is provided with a clamping opening, and the inner wall of the clamping opening is provided with a convex clamping table;

the middle part of the outer wall of the anastomotic ring is provided with a circle of annular groove, the anastomotic ring is positioned in the clamping opening, and the clamping table is clamped in the annular groove.

In some embodiments of the present utility model, the pliers further comprise two locking bars connected to the inner sides of the two pliers arms, respectively, with a mating locking portion connected between the two locking bars.

In some embodiments of the present utility model, the mating locking portion is a tooth, and the free ends of the two locking bars are each provided with a tooth, and the teeth of the two locking bars are engaged.

In some embodiments of the utility model, the mating locking portion is a spring.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

the two anastomotic rings are aligned and buckled through the meshing of the two clamp arms, so that the two anastomotic rings are easily aligned and buckled together, and the operation is convenient, fast and accurate, thereby further improving the suturing efficiency and the suturing efficiency. Secondly, when the two anastomotic rings are buckled, the two forceps arms drive the two anastomotic rings to rotate along with the two rotating mechanisms until the two anastomotic rings are parallel, so that the front surfaces of the two anastomotic rings are outwards opened in the direction of an operator, the operator can conveniently pass a blood vessel through a blood vessel slot hole of the two anastomotic rings, and the operator can conveniently turn the broken end of the blood vessel outwards, so that the utility model is convenient for the operator to use on one hand; on the other hand, the axis of the utility model connects the forceps arm with the anastomotic ring, then the blood vessel passes through the vascular slotted hole and the broken end of the blood vessel is turned outwards, and the forceps arm passes through the blood vessel and turns outwards after ensuring the relative positions of the two anastomotic rings, so that the quality and the efficiency of vascular suturing are further ensured on the premise that the two anastomotic rings are easier to align; in addition, the utility model realizes the change of the included angle between the two anastomotic rings through the rotation of the rotating mechanism, thereby adjusting the included angle between the two anastomotic rings to the maximum through the rotating mechanism when penetrating into a blood vessel, gradually reducing the included angle between the two anastomotic rings until the two anastomotic rings are parallel through the reverse rotating mechanism after penetrating into the blood vessel, and finally, closing the two anastomotic rings to each other by the rotating mechanism to suture, thereby ensuring the suturing quality.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which

Fig. 1 is a schematic structural view of a clamp for suturing a microvascular anastomat.

Fig. 2 is a schematic view of a clamp for suturing a microvascular anastomat according to the present utility model, connected to the anastomat.

Fig. 3 is an alternative schematic view of the suturing clip of the microvascular stapler of fig. 2 connected to a stapler.

Fig. 4-6 are schematic structural views of an anastomotic ring.

Fig. 7 to 8 are schematic views showing operations of performing a microvascular anastomosis using the clamping forceps for suturing of the microvascular anastomat of the present utility model.

Description of the specification reference numerals: 100. an anastomotic ring; 100a, a first anastomosis ring; 100b, a second anastomosis ring; 110. a vascular slot; 120. pin holes; 130. a needle penetrating hole; 140. anastomotic semi-rings; 141. a bonding wire; 141a, a first bond line; 141b, a second bond line; 141c, a third bond line; 141d, fourth bond line; 150. a through hole; 160. fixing the needle; 161. a protrusion; 170. a communication groove; 180. wire coiling groove; 190. a slot-shaped hole;

200. a wire needle;

300. a suture;

400. clamping pliers; 410. a clamp arm; 411. a first central axis; 412. a second central axis; 413. a third central axis; 420. a connecting rod; 421. a chute; 430. a rotating ring; 431. a cam; 431a, a first end; 431b, a second end; 432. a connecting groove; 440. a thumb wheel; 450. a limit nail; 460. a limit groove; 470. a locking lever; 471. teeth;

500. a rotary clamping part; 510. a clamping opening; 511. a clamping table; 512. an annular groove;

600. and (5) blood vessels.

Detailed Description

The utility model will be further described in connection with the accompanying drawings and specific examples which are set forth so that those skilled in the art will better understand the utility model and will be able to practice it, but the examples are not intended to be limiting of the utility model.

Referring to fig. 1 to 3, the present utility model provides a clamp for suturing a microvascular anastomat, comprising:

pliers comprising two articulated pliers arms 410;

two rotation mechanisms connected to the tip of the jawarm 410 and rotated to open and close relative to the axis of the jawarm 410;

two rotary clamping parts 500, the rotary clamping parts 500 being connected to the top ends of the rotary mechanisms;

the two clamp arms 410 are engaged to drive the rotation mechanism and the rotation clamping part 500 to rotate, and the two rotation clamping parts 500 are rotated to open and close and approach each other.

The stapler comprises two anastomotic rings 100, the two anastomotic rings 100 being connected to two rotating clamping portions, respectively.

When the two anastomotic rings 100 are buckled, the two forceps arms 410 drive the two anastomotic rings 100 to rotate along with the two rotating mechanisms until the two anastomotic rings are parallel, so that the front surfaces of the two anastomotic rings 100 are outwards opened towards the direction of an operator, the operator can conveniently pass the blood vessel 600 through the blood vessel slotted holes 110 of the two anastomotic rings 100, and the operator can conveniently turn the broken ends of the blood vessel 600 outwards. Thus, on one hand, the utility model is convenient for operators to use; on the other hand, the axis of the present utility model connects the forceps arm 410 with the anastomotic ring 100, then the blood vessel 600 is passed through the vascular slot 110 and the cut end of the blood vessel 600 is turned outwards, which passes through the blood vessel 600 and turns the cut end of the blood vessel 600 outwards after ensuring the relative positions of the two anastomotic rings 100, thus further ensuring the quality and efficiency of suturing the blood vessel 600 on the premise of making the alignment of the two anastomotic rings 100 easier. In addition, the utility model realizes the change of the included angle between the two anastomotic rings 100 through the rotation of the rotating mechanism, so that the included angle between the two anastomotic rings 100 is adjusted to the maximum through the rotating mechanism when penetrating into the blood vessel 600, the rotating mechanism is reversely rotated to gradually reduce the included angle between the two anastomotic rings 100 until the two anastomotic rings are parallel after penetrating into the blood vessel 600, and finally the rotating mechanism is rotated to enable the two anastomotic rings 100 to approach each other for suturing, thereby ensuring the suturing quality.

Further, two arms of the pliers are arranged in an X shape, and the intersection of the two arms is hinged through a first central shaft.

In some possible embodiments, the stapler comprises: two anastomotic rings 100, wherein the two anastomotic rings 100 are respectively connected to the two rotary clamping parts, the two anastomotic rings 100 are arranged face to face, the anastomotic rings 100 are internally provided with axially-through vascular slots 110, and the vascular slots 110 are circular holes; a plurality of pin holes 120 and a plurality of pin holes 130 are arranged on one side, close to each other, of the two anastomotic rings 100, the pin holes 120 and the pin holes 130 are circumferentially distributed at intervals, and the pin holes 130 are axial through holes;

a plurality of lead pins 200 connected to pin holes 120 of two anastomotic rings 100 and pulled out from pin holes 120, and a suture thread 300 is connected to the tail end of pin hole 120;

the clamping pliers 400 comprise pliers and two rotating mechanisms, wherein the pliers comprise two hinged pliers arms 410, the pliers arms 410 are connected with the rotating mechanisms, and the two rotating mechanisms are rotated to open and close relative to the pliers arms 410;

wherein, the two anastomotic rings 100 are respectively connected with two rotating mechanisms, the two rotating mechanisms drive the two anastomotic rings 100 to rotate and open and close until the two anastomotic rings 100 are parallel, the two forceps arms 410 drive the two anastomotic rings 100 to approach each other, and the needle 200 of one anastomotic ring 100 is inserted into the needle penetrating hole 130 of the other anastomotic ring 100. For ease of description below, two anastomotic rings 100 are referred to as first anastomotic ring 100a and second anastomotic ring 100b, respectively; the needle 200 of the first anastomotic ring 100a and the needle penetrating hole 130 of the second anastomotic ring 100b are arranged opposite to each other in the axial direction, the needle 200 of the first anastomotic ring 100a and the needle 200 of the second anastomotic ring 100b are arranged in a staggered manner in the circumferential direction, and the needle penetrating hole 130 of the first anastomotic ring 100a and the needle penetrating hole 130 of the second anastomotic ring 100b are arranged in a staggered manner in the circumferential direction.

Specifically, two blood vessels 600 of the present utility model respectively pass through the vascular slots 110 of two anastomotic rings 100, and the cut ends of the blood vessels 600 are turned outwards and hooked on the respective needles 200 of the anastomotic rings 100 one by one, the two forceps arms 410 drive the two anastomotic rings 100 to rotate along with the two rotating mechanisms until parallel, then the two forceps arms 410 drive the two anastomotic rings 100 to approach each other until the needles 200 of one of the two anastomotic rings 100 are inserted into the needle holes 130 of the other, and then the needles 200 of one of the two anastomotic rings 100 are pulled out and knotted on the back of the other to complete suturing. The two anastomotic rings 100 of the present utility model are aligned and fastened by the engagement of the two clamp arms 410, so that 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 the suturing efficiency. Secondly, the broken end of the blood vessel 600 in the utility model is directly hooked on the lead wire 200 after being turned outwards, and then the suture of the blood vessel 600 is realized by pulling out the lead wire 200, and the suture is realized without causing other wounds on the broken end of the blood vessel 600.

Referring to fig. 3, further, anastomosis ring 100 includes two anastomosis ring halves 140, and anastomosis ring 100 is formed by radially apposing two anastomosis ring halves 140. Two anastomotic ring halves 140 are each provided with half a vascular slot 110.

Specifically, anastomosis ring 100 in the present embodiment is formed by the apposition of two anastomosis ring halves 140, which facilitate threading of blood vessel 600 through vessel slots 110.

With continued reference to fig. 4, further, two anastomotic ring halves 140 are apposed to form a bond line 141 in anastomotic ring 100, the bond lines 141 of two anastomotic rings 100 intersecting, e.g., the bond lines 141 of two anastomotic rings 100 intersecting in a cross shape;

one of the two anastomotic rings 100 is provided with a through hole 150 and the other is provided with a fixation needle 160 penetrating through hole 150.

Specifically, the joining lines 141 of the two anastomotic rings 100 in this embodiment intersect and the relative fixed connection of the two anastomotic rings 100 is achieved by the passage of the fixation needle 160 of one of the two anastomotic ring halves 140 through the passage hole 150 of the other. Simple structure, easy fixing and separating, and no influence on the next use of two anastomotic rings 100, and can be reused.

Referring to fig. 5, in some possible implementations, two anastomotic ring halves 140 of the present example are apposed to form two joining lines 141 in anastomotic ring 100, the joining lines 141 of the two anastomotic rings 100 being arranged circumferentially offset from each other; for example, two anastomotic ring halves 140 of first anastomotic ring 100a form a first joining line 141a and a second joining line 141b, and two anastomotic ring halves 140 of second anastomotic ring 100b form a third joining line 141c and a fourth joining line 141d; the first, second, third and fourth bonding lines 141a, 141b, 141c and 141d are arranged offset from each other in the circumferential direction. This prevents vessel 600 from receiving radial pressure from anastomosis ring 100, thereby preventing vessel 600 from being damaged by external forces.

One of the two anastomotic ring halves 140 is provided with a through hole 150 and the other is provided with a fixation needle 160 penetrating through the hole 150.

Referring to fig. 4 to 6, further, the front end of the fixing needle 160 is provided with a taper head.

In particular, the tapered head facilitates penetration of the fixation needle 160 into the pass-through hole 150.

With continued reference to fig. 4-6, further, the distal end of the needle 200 is provided with a tapered head.

In particular, the tapered head facilitates penetration of the needle 200 into the needle penetration aperture 130.

With continued reference to fig. 4-6, further, the forward end of the stationary needle 160 is provided with a tapered head. The front end of the needle 200 is provided with a conical head.

With continued reference to fig. 4-6, further, the securing needle 160 is provided with a projection 161 protruding from its outer wall, the projection 161 being in interference fit with the through hole 150.

Specifically, in this embodiment, the fixing needle 160 is provided with the protrusion 161, the outer diameter of the other part of the fixing needle 160 is smaller than the inner diameter of the through hole 150, and the outer diameter of the protrusion 161 is larger than the inner diameter of the through hole 150, so that the fixing needle 160 can penetrate into the through hole 150, and the protrusion 161 is in interference fit with the through hole 150 after the fixing needle 160 penetrates through the through hole 150, so that the two anastomotic rings 100 can be prevented from influencing the suturing due to the axial movement in the suturing process.

With continued reference to fig. 4-6, further, the fixation needle 160 is spaced from the center of the vascular slot 110 a greater distance than the guide wire 200 is spaced from the center of the vascular slot 110. That is, the fixing needle 160 is disposed at the outer ring compared to the lead needle 200.

Specifically, the distance between the fixing needle 160 of the present embodiment and the center of the vascular slot 110 is greater than the distance between the guide needle 200 and the center of the vascular slot 110, so that the broken end of the blood vessel 600 is directly hooked on the guide needle 200 after everting, and the broken end of the blood vessel 600 is not hooked on the fixing needle 160, thereby reducing the damage of the broken end of the blood vessel 600.

With continued reference to fig. 4-6, further, one side of pin opening 120 of anastomosis ring 100 is provided with a communication slot 170 communicating with pin opening 120; needle 200 of anastomosis ring 100 is interference fit with needle insertion aperture 120.

Specifically, in this embodiment, communication groove 170 is provided on anastomosis ring 100, and the provision of communication groove 170 facilitates pulling needle 200 out of needle insertion hole 120 for suturing.

With continued reference to fig. 4-6, further, a wire groove 180 is provided at a position of the anastomotic ring 100 outside the pin hole 120, the wire groove 180 is an annular groove 512, and the wire groove 180 is communicated with the pin hole 120 through a communication groove 170; the suture 300 is wound in the winding groove 180, and one end of the suture 300 is connected to the needle 200.

Specifically, the present embodiment provides the wire coiling groove 180, so that the suture 300 can be coiled in the wire coiling groove 180 in advance and one end of the suture is directly connected to the wire leading needle 200, and the operator does not need to perform the operation when using the suture, thereby being more convenient and faster to use.

With continued reference to fig. 5, further, anastomosis ring 100 is provided with a slotted aperture referenced 190 on a side thereof located at needle aperture 130, slot aperture referenced 190 communicating outside anastomosis ring 100.

In particular, the present embodiment provides a slot-type hole 190 to facilitate tying a knot with the other end of the suture 300 positioned in the wire slot 180 after pulling one end of the suture 300 connected to the needle 200 out of the slot-type hole 190 after suturing the blood vessel 600.

Referring to fig. 1 to 3, further, the rotation mechanism includes a connection rod 420, a rotation ring 430, and a dial 440;

the connecting rod 420 is symmetrically arranged on two sides of the pliers, two pliers arms 410 are positioned on the same side of the first central shaft 411, one of the two pliers arms is hinged with the bottom end of the connecting rod 420 through a second central shaft 412, and the other pliers arm is hinged with the middle part of the connecting rod 420 through a third central shaft 413; the connecting rod 420 is provided with a sliding groove 421 extending along the axial direction thereof, and the third central shaft 413 slides back and forth in the sliding groove 421;

the thumb wheel 440 is connected to the top end of the jawarms 410;

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 two ends of the arc have a fall, i.e., a position difference, along the axial direction of the rotating ring 430; for convenience of the following description, these two ends are referred to as first end 431a and second end 431b, respectively, first end 431a being axially adjacent anastomosis ring 100 relative to second end 431 b.

Wherein, the rotating ring 430 is sleeved at the top end of the connecting rod 420 and rotates along the circumferential direction relative to the connecting rod 420; the cam 431 of the rotary ring 430 contacts the thumbwheel 440.

Specifically, in this embodiment, the two jawarms 410 are engaged to move the third central shaft 413 in the sliding groove 421, so as to drive the cam 431 to move from the second end 431b to the first end 431a to engage the lower surface of the rotating ring 430, so as to drive the anastomotic ring 100 to rotate around the connecting rod 420 along with the rotating ring 430, and when the third central shaft 413 slides to the top end of the sliding groove 421, the two anastomotic rings 100 are parallel. The two jawarms 410 are then continued to be engaged, at which time the two anastomotic rings 100 are brought toward one another to suture the vessel 600. Thus, the embodiment is more convenient to operate, and the suturing quality and efficiency are high.

With continued reference to fig. 1-3, further, the rotation mechanism further includes a spacing peg 450 and a spacing groove 460; the limit nail 450 is fixed on the outer wall of the connecting rod 420; the limiting groove 460 penetrates through the wall body of the rotating ring 430 along the circumferential direction of the rotating ring 430;

wherein the spacing pin 450 is positioned in the spacing groove 460.

Specifically, the present embodiment provides the limiting nail 450 and the 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 a guiding function for the rotation of the rotating ring 430 on one hand, and limits the axial movement of the rotating ring 430 in the rotating process on the other hand.

With continued reference to fig. 1-3, 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 provides a connection slot 432 in communication with the limiting slot 460 such that the rotary ring 430 of the present anastomotic ring 100 is separated from the connecting rod 420 prior to use, the anastomotic ring 100 is first mounted on the rotary ring 430 and then the rotary ring 430 is mounted on the connecting rod 420 during use, such that the rotary ring 430 and the anastomotic ring 100 connected to the rotary ring 430 are disposable products and the forceps and the connecting rod 420 connected to the forceps are reusable parts. Because of the relatively small area of anastomosis ring 100, if an operator installs anastomosis ring 100 on rotary ring 430 in the field, it is not easy to install and the efficiency of the procedure is reduced. In this embodiment, the anastomotic ring 100 is mounted on the rotating ring 430 in advance, and when in use, the connecting groove 432 of the rotating ring 430 is sleeved on the limiting nail 450, and then the rotating ring 430 is pulled downwards and then the rotating ring 430 is rotated, so that the limiting nail 450 is clamped in the limiting groove 460. Is convenient for operators to use quickly.

With continued reference to fig. 1 to 3, further, the rotary clamping portion 500 is provided with a clamping opening 510, and the inner wall of the clamping opening 510 is provided with a protruding clamping platform 511;

a ring-shaped groove 512 is arranged in the middle of the outer wall of the anastomotic ring 100, the anastomotic ring 100 is positioned in the clamping opening 510, and the clamping table 511 is clamped in the ring-shaped groove 512.

Specifically, this embodiment uses the cooperation of the snap-on abutment 511 and the annular groove 512 to connect the anastomotic ring 100 to the rotation mechanism, and to detach the anastomotic ring 100 from the blood vessel 600 after suturing the blood vessel 600, thereby avoiding the anastomotic ring 100 from remaining on the blood vessel 600.

With continued reference to fig. 1-3, further, the pliers further comprises two locking bars 470, wherein the two locking bars 470 are respectively connected to the inner sides of the two pliers arms 410, and a matching locking part is connected between the two locking bars 470.

Specifically, the locking lever 470 in this embodiment is configured to enable the two jawarms 410 to form a pulling force therebetween, so as to avoid excessive opening and closing of the two jawarms 410, which affects the normal use of the rotating mechanism.

Further, the mating locking portions are teeth 471, the free ends of the two locking levers 470 are provided with teeth 471, and the teeth 471 of the two locking levers 470 are engaged.

Further, the mating locking portion is a spring.

Further, anastomosis ring 100 is formed from plastic.

Referring to fig. 7-8, the initial engagement of two arms 410 of the pliers causes two anastomotic rings 100 to rotate with the two rotating mechanisms until the two anastomotic rings 100 are parallel face-to-face;

the two arms 410 of the forceps continue to engage bringing the two anastomotic rings 100 closer together until the needle 200 of one of the two anastomotic rings 100 is inserted into the needle-passing hole 130 of the other.

With continued reference to fig. 7-8, the anastomotic ring 100, the rotating grip 500 and the rotating ring 430, which are connected together, are mounted at the end of the connecting rod 420;

the broken ends of the blood vessel 600 are turned outwards along the blood vessel slot 110 passing through the blood vessel 600 to be sutured, and are hooked on the lead pins 200 of the anastomotic ring 100 one by one, so as to complete the eversion operation of the inner membrane of the blood vessel 600;

repeating the above steps, hooking the other broken end of the blood vessel 600 to another anastomosis ring 100 of the same type;

engaging the two forceps arms 410 such that the two anastomotic rings 100 are first closed and then brought closer to each other, as the two anastomotic rings 100 are stepped, the lead 200 of one is inserted into the needle-threading hole 130 of the other, and then knotting the suture 300, thereby achieving suturing;

the two forceps arms 410 are released to separate the two anastomotic rings 100, the two anastomotic rings 100 are then removed from the two rotary clamping portions 500, and each anastomotic ring 100 is then separated into two anastomotic ring halves 140, thereby detaching the anastomotic rings 100 from the blood vessel 600, and the eversion anastomosis of the blood vessel 600 is completed.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious changes and modifications which are extended therefrom are still within the scope of the utility model.

Claims (10)

1. The utility model provides a micro-vessel anastomat is sewed up and is used clamping forceps which characterized in that: comprising the following steps:

pliers, comprising two articulated arms;

the two rotating mechanisms are connected to the top ends of the clamp arms and are rotated to open and close relative to the axes of the clamp arms;

the two rotary clamping parts are connected to the top end of the rotary mechanism;

the two clamp arms are meshed to drive the rotating mechanism and the rotating clamping part to rotate, and the two rotating clamping parts are rotated to open and close and are close to each other.

2. The clamp for suturing a microvascular stapler according to claim 1, wherein: two arms of the pliers are arranged in an X shape, and the intersection of the two arms is hinged through a first central shaft.

3. The clamp for suturing a microvascular stapler according to claim 2, wherein: the rotating mechanism comprises a connecting rod, a rotating ring and a thumb wheel;

the connecting rods are symmetrically arranged on two sides of the pliers, two pliers arms are positioned on the same side of the first central shaft, one of the two pliers arms is hinged with the bottom end of the connecting rod through a second central shaft, and the other pliers 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 along the axial direction of the connecting rod, and the third central shaft slides back and forth in the sliding groove;

the dial wheel is connected to the top end of the clamp arm;

the bottom end of the rotating ring is provided with a cam protruding out of the lower surface of the rotating ring, the lower surface of the cam is arc-shaped, and two ends of the arc-shaped are provided with drop heights along the axial direction of the rotating ring;

the rotary ring is sleeved at the top end 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 thumb wheel.

4. The clamp for suturing a microvascular stapler according to claim 3, wherein: at least one of the first center shaft, the second center shaft and the third center shaft is a pin shaft.

5. The clamp for suturing a microvascular stapler according to claim 3, wherein: the rotating mechanism further comprises a limit nail and a limit groove; the limit nails are fixed on the outer wall of the connecting rod; the limiting groove penetrates through the wall body of the rotating ring along the circumferential direction of the rotating ring;

wherein, the spacing nail is located in the spacing groove.

6. The clamp for suturing a microvascular stapler according to claim 5, wherein: the bottom of swivel ring is equipped with the spread groove of axial extension, the spread groove with the spacing groove intercommunication.

7. The clamp for suturing a microvascular anastomat according to any one of claims 3 to 6, wherein: the rotary clamping part is provided with a clamping opening, and the inner wall of the clamping opening is provided with a convex clamping table;

the anastomat comprises an anastomat ring, a ring-shaped groove is formed in the middle of the outer wall of the anastomat ring, the anastomat ring is positioned in the clamping opening, and the clamping table is clamped in the annular groove.

8. The clamp for suturing a microvascular stapler according to claim 1, wherein: the pliers further comprise two locking rods, the two locking rods are respectively connected to the inner sides of the two pliers arms, and a matched locking part is connected between the two locking rods.

9. The clamp for suturing a microvascular stapler according to claim 8, wherein: the cooperation locking portion is the tooth, the free end of two locking levers all is equipped with the tooth, the tooth meshing of two locking levers.

10. The clamp for suturing a microvascular stapler according to claim 8, wherein: the matched locking part is a spring.