Ejection type vascular anastomosis stitching instrument

Abstract

The utility model provides an ejection type vascular anastomosis stitching instrument which comprises a handle, the handle is fixedly connected with a left needle dial with a left butt joint rod and a right needle dial with a right butt joint rod, the left needle dial and the right needle dial are respectively provided with a plurality of left stitching needles and a plurality of right stitching needles, and the correspondingly arranged left stitching needles and right stitching needles are connected through the same stitching thread; a left push block and a right push block are connected to the handle in a sliding mode, an elastic unit located between the left push block and the right push block is installed on the handle, the left push block and the right push block can be ejected out towards the two sides by releasing the elastic force of the elastic unit, and the ejected push blocks push the suture needle out of the butt joint rod. According to the utility model, not only can the butt joint of blood vessels be realized, but also all the left suture needles on the left needle disc can penetrate through the blood vessel wall at one time, and all the right suture needles on the right needle disc can penetrate through the blood vessel wall at one time, so that the needles do not need to be manually penetrated one by one, the difficulty of surgical operation is reduced, the surgical time is shortened, and the labor intensity of doctors is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an ejection-type vascular anastomosis suture device. Background Art

[0002] In surgical operations, the anastomosis of micro-cavities such as microvessels and lymphatic vessels is a delicate surgical operation. The docking and suturing of the anastomotic ends of blood vessels (including but not limited to blood vessels, lymphatic vessels, etc., the same below) includes two processes, one is the docking of the anastomotic ends of the blood vessels, and the other is suturing. The effects of docking and suturing will directly affect the healing effect.

[0003] In view of this, CN202410019202.4 discloses a vascular suturing auxiliary device, including a flange, which has a coaxially arranged rim, a spoke and an inner ring, the inner ring is hollow and can cooperate with the blood vessel, the spoke has a plurality of needle holes evenly arranged along the circumference, the blood vessel wall is turned outward and attached to the spoke, and a straight needle is used to pass through the blood vessel wall and the needle hole while the suture is tied around the flange. Although the aforementioned patent can dock the broken blood vessels well, it requires manual suturing needle by needle, which is labor-intensive; in addition, after the operation, the flange needs to remain in the patient's body. Although the flange is made of degradable materials, there will still be a foreign body sensation, which reduces the comfort. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the prior art, and the purpose of the utility model is to provide an ejection-type vascular anastomosis suture device.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ejection-type vascular anastomosis suture instrument, comprising a handle, a left needle disk and a right needle disk fixedly connected to the handle, the left end of the left needle disk having a left docking rod capable of docking with a blood vessel, and the right end of the right needle disk having a right docking rod capable of docking with a blood vessel; a plurality of left suture needles are arranged circumferentially at intervals on the left needle disk, and a plurality of right suture needles corresponding to the left suture needles are arranged circumferentially at intervals on the right needle disk, and the correspondingly arranged left suture needles and right suture needles are connected by the same suture thread; a left push block capable of axial movement along the left needle disk and a right push block capable of axial movement along the right needle disk are slidably connected to the handle; an elastic unit located between the left push block and the right push block is also installed on the handle, and by releasing the elastic force of the elastic unit, the elastic unit can eject the left push block and the right push block to both sides, and the ejected left push block pushes the left suture needle out of the left docking rod and passes through the blood vessel wall from the inside to the outside, and at the same time, the ejected right push block pushes the right suture needle out of the right docking rod and passes through the blood vessel wall from the inside to the outside.

[0006] The above technical solution is convenient for the operator to hold and apply force by setting a handle, and the left needle tray and the right needle tray are fixed on the handle, and suture needles are movably connected thereto, and the two corresponding suture needles on the left needle tray and the right needle tray are connected by the same suture thread, and the left docking rod and the right docking rod are used to dock two broken blood vessels, and the left push block and the right push block are ejected to the left and right sides at the same time by the elastic unit, and the ejected push block pushes the suture needle from the docking rod, so that the needle tip of the suture needle can pass through the blood vessel wall from the inside to the outside. The utility model can not only achieve the docking of blood vessels, but also pass all the left suture needles on the left needle tray through the blood vessel wall at one time, and pass all the right suture needles on the right needle tray through the blood vessel wall at one time, without the need for manual needle threading one by one, thereby reducing the difficulty of surgical operation, reducing the operation time, and reducing the labor intensity of doctors; and after the operation, only the suture thread remains in the patient's body, reducing the foreign body sensation and improving the comfort.

[0007] In a preferred embodiment of the utility model, the elastic unit includes a columnar spring, a support member fixed to the handle for supporting the columnar spring, and a limiting clamp having a limiting groove. The columnar spring is pressed in the limiting groove of the limiting clamp. By operating the limiting clamp, the columnar spring can be freed from the restriction of the limiting clamp.

[0008] The above technical solution compresses the columnar spring by the limiting clamp to store energy. After the columnar spring is free from the restriction of the limiting clamp, the support member ensures that the columnar spring recovers elastic deformation at its original position to eject the left push block and the right push block to both sides.

[0009] In a preferred embodiment of the utility model, the support member includes a connecting rod fixedly connected to the handle, and a guide rod fixedly connected to the connecting rod and passing through the columnar spring, and one end of the connecting rod close to the guide rod passes through the columnar spring from the side.

[0010] In the above technical solution, the guide rod fixedly connected to the connecting rod guides the expansion and contraction of the columnar spring, avoids the columnar spring from tilting, and ensures that the columnar spring expands and contracts along its axial direction.

[0011] In a preferred embodiment of the utility model, the limit clamp is elastically connected to the handle through an elastic member. In normal state, the elastic member is in a natural state, the limit clamp is in a locked position, and the columnar spring is located in the limit groove; by overcoming the elastic force of the elastic member to move the limit clamp to an unlocked position, the columnar spring can break away from the restriction of the limit clamp.

[0012] The above technical solution, by providing an elastic member, under normal conditions, under the elastic force of the elastic member, the limit clamp is in a locked position, thereby ensuring the compression state of the columnar spring.

[0013] In a preferred embodiment of the utility model, one end of the limit clamp away from the columnar spring is rotatably connected to the handle and the other end is a free end, or the limit clamp is vertically slidably connected to the handle; by overcoming the elastic force of the elastic member to press down or lift up the limit clamp, the limit clamp can move from the locked position to the unlocked position.

[0014] According to the above technical solution, the columnar spring can be released from the restriction of the limit clamp by pressing down or lifting up the limit clamp, and the operation is simple.

[0015] In another preferred embodiment of the utility model, the left docking rod has a left conical surface with the large end located on the right side for docking with the blood vessel, and the needle tip of the left suture needle passes through the left conical surface; the right docking rod has a right conical surface with the large end located on the left side for docking with the blood vessel, and the needle tip of the right suture needle passes through the right conical surface.

[0016] In the above technical solution, the conical surface can not only guide, but also make the blood vessel smoothly and tightly clamped thereon, so as to prevent the blood vessel from being loosened from the docking rod when the suture needle passes through.

[0017] In a preferred embodiment of the present invention, a plurality of left needle holes corresponding to the left suture needle are circumferentially spaced apart on the left needle disk and the right needle disk, a plurality of left needle threading grooves corresponding to and communicating with the left needle hole are circumferentially spaced apart on the left docking rod, and the left suture needle is inserted into the left needle hole and the left needle threading groove; a plurality of right needle holes corresponding to the right suture needle are circumferentially spaced apart on the right needle disk, a plurality of right needle threading grooves corresponding to and communicating with the right needle hole are circumferentially spaced apart on the right docking rod, and the right suture needle is inserted into the right needle hole and the right needle threading groove.

[0018] In the above technical solution, the needle hole and the needle threading groove guide the movement of the suture needle, so that the suture thread can smoothly pass through the blood vessel wall from the inside to the outside.

[0019] In a preferred embodiment of the present invention, the bottoms of the left needle threading groove and the right needle threading groove are both arc-shaped, and the left suture needle and the right suture needle are both arc-shaped; under the limiting action of the left needle hole, the left suture needle can slide to the left and radially outward along the arc-shaped bottom of the left needle threading groove; under the limiting action of the right needle hole, the right suture needle can slide to the right and radially outward along the arc-shaped bottom of the right needle threading groove.

[0020] According to the above technical solution, under the limiting effect of the needle hole, the suture needle can only slide outward and radially outward along the arc-shaped bottom of the needle threading groove; and the bottom of the needle threading groove and the suture needle are both arc-shaped, making the movement of the suture needle smoother.

[0021] In a preferred embodiment of the present invention, the left side of the left push block has a left arc surface that is recessed to the right and can abut against the tail of the left suture needle, and the right side of the right push block has a right arc surface that is recessed to the left and can abut against the tail of the right suture needle.

[0022] In the above technical solution, when the push block pushes the suture needle out from the docking rod, the tail of the suture needle slides inward on the arc surface, and the sliding is smoother.

[0023] In a preferred embodiment of the present invention, a plurality of wire outlet grooves corresponding to the suture threads are circumferentially spaced on the outer walls of the left needle disk and the right needle disk, the wire outlet grooves are connected to the left needle hole / right needle hole, and the suture threads can be pulled out from the wire outlet grooves; or the left needle disk and the right needle disk are both annular structures with a through hole in the middle, the annular structure includes two semicircular rings detachably connected to the left docking rod / right docking rod, and a notch connected to the left needle hole / right needle hole is provided on the inner wall of the left needle disk / right needle disk, and the suture threads can be pulled out from the notch.

[0024] The above technical solution, by providing a wire outlet groove, facilitates pulling the suture thread in the needle hole out of the needle disk, so as to conveniently remove the needle disk from the suture thread bundle; or the needle disk is composed of two semicircular rings, which facilitates the removal of the needle disk from the docking rod, and by providing a notch, facilitates pulling the suture thread in the needle hole out of the needle disk through the notch, so as to remove the needle disk from the suture thread bundle.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 1 is a schematic structural diagram of an ejection-type vascular anastomosis suture device according to an embodiment.

[0028] Figure 2 It is a partial schematic diagram of the suture needle in the embodiment before it penetrates the blood vessel.

[0029] Figure 3 It is a partial schematic diagram of the suture needle in the embodiment after penetrating the blood vessel.

[0030] Figure 4 It is a structural schematic diagram of a needle disk.

[0031] Figure 5 It is another structural schematic diagram of the needle disk.

[0032] The figure marks in the drawings of the specification include: handle 1, suture thread 2, left needle disk 3, left needle hole 3a, wire outlet groove 3b, through hole 3c, semicircular ring 3d, notch 3e, right needle disk 4, right needle hole 4a, left docking rod 5, left needle threading groove 5a, left conical surface 5b, right docking rod 6, right needle threading groove 6a, right conical surface 6b, left suture needle 7, right suture needle 8, left push block 9, left arc surface 9a, right push block 10, right arc surface 10a, columnar spring 11, support member 12, connecting rod 121, guide rod 122, limit splint 13, limit groove 13a, blood vessel 14. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0036] The utility model provides a ejection type vascular anastomosis suture device, such as Figure 1-Figure 3As shown, in a preferred embodiment, the vascular anastomosis suture device includes a handle 1, on which a left needle disk 3 and a right needle disk 4 are fixedly arranged at intervals, and the left needle disk 3 and the right needle disk 4 are fixedly connected to the left and right ends of the handle 1 respectively. The left end of the left needle disk 3 has a left docking rod 5 that can dock with the blood vessel 14, and the right end of the right needle disk 4 has a right docking rod 6 that can dock with the blood vessel 14, and the left docking rod 5 and the right docking rod 6 both have a guide portion that is convenient for inserting into the blood vessel 14. A plurality of left suture needles 7 are arranged circumferentially at intervals on the left needle disk 3, and a plurality of right suture needles 8 corresponding to the left suture needles 7 are arranged circumferentially at intervals on the right needle disk 4, and the corresponding left suture needles 7 and right suture needles 8 are connected by the same suture thread 2.

[0037] The handle 1 is slidably connected with a left push block 9 capable of axial movement along the left needle disk 3, and a right push block 10 capable of axial movement along the right needle disk 4; the handle 1 is also provided with an elastic unit located between the left push block 9 and the right push block 10. In normal state, the elastic unit is in a compressed state to store energy.

[0038] When in use, the handle 1 is held, and the left docking rod 5 and the right docking rod 6 are docked into the two broken blood vessels 14, respectively. At this time, the two blood vessels 11 are respectively sleeved on the left docking rod 5 and the right docking rod 6. Initially, the elastic unit stores energy, and by releasing the elastic potential energy of the elastic unit, the elastic unit ejects the left push block 9 and the right push block 10 to the left and right sides respectively. The left push block 9 ejected to the left presses against the needle tail of the left suture needle 7 (one end of the suture thread 2), pushes the left suture needle 7 from the left docking rod 5 and passes through the blood vessel wall from the inside to the outside, and the right push block 10 ejected to the right presses against the needle tail of the right suture needle 8, pushes the right suture needle 8 from the right docking rod 6 and passes through the blood vessel wall from the inside to the outside. Then use tweezers to pull the needle tip that has passed through the blood vessel 14 out of the left docking rod 5 and the right docking rod 6, then pull out the left docking rod 5 and the right docking rod 6 from the blood vessel 14, remove the left needle disk 3, the left docking rod 5, the left push block 9, the right needle disk 4, the right docking rod 6, the right push block 10 and the elastic unit. Cut the thread on the needle tail, slowly pull the two ends of the suture thread 2, gradually dock the two broken blood vessels 14 together, and tie a knot to complete the anastomosis of the blood vessel 14.

[0039] In the utility model, except for the suture needles (including the left suture needle 7 and the right suture needle 8) and the suture thread 2, other parts can be made of plastic. After assembly, they are sterilized and packaged normally. During surgery, they are unpacked and placed on the operating table.

[0040] In the present invention, the number of sutures 2 can be four, six or eight, depending on the thickness of the blood vessel 14; the material of the suture 2 is natural or synthetic non-absorbable thread, such as nylon thread, polyester thread, polyester thread, polypropylene thread and polyethylene thread. In addition, different specifications can be designed, covering blood vessels 14 with diameters ranging from fine 0.5mm to 4mm, and also covering arteries and veins, lymphatic vessels, lacrimal ducts, pancreatic ducts, thoracic ducts, etc. with diameters ranging from 0.5mm to 4mm. It can also be used for thick tubes other than blood vessels 14, with diameters ranging from 4mm and above to 50mm, such as intestinal tubes and ureters.

[0041] like Figure 1 and Figure 2 As shown, in a preferred embodiment of the utility model, the elastic unit includes a columnar spring 11 whose axis extends in the left-right direction, a support member 12 fixed to the handle 1 for supporting the columnar spring 11, and a limiting clamp 13 having a limiting groove 13a, wherein the limiting clamp 13 is a U-shaped structure, and the columnar spring 11 is pressed in the limiting groove 13a of the limiting clamp 13 to store energy. Initially, the limiting clamp 13 compresses the columnar spring 11 to store energy, and by operating the limiting clamp 13, the limiting clamp 13 is moved to leave the columnar spring 11, and the columnar spring 11 is freed from the restriction of the limiting clamp 13, and the compressed columnar spring 11 recovers its elastic deformation and ejects the left push block 9 and the right push block 10 to the left and right sides at the same time.

[0042] Among them, the support member 12 includes a connecting rod 121 fixedly connected to the handle 1, and a guide rod 122 fixedly connected to the connecting rod 121 and laterally inserted into the columnar spring 11. One end of the connecting rod 121 close to the guide rod 122 vertically penetrates into the columnar spring 11 from the side of the columnar spring 11 and is fixedly connected to the guide rod 122, that is, the support member 12 is a T-shaped structure.

[0043] like Figure 1 As shown, in the utility model, the bottom of the limit clamp 13 is elastically connected to the handle 1 through an elastic member (not shown in the figure). In normal state, the elastic member is in a natural state, the limit clamp 13 is in a locked position, and the columnar spring 11 is located in the limit groove 13a of the limit clamp 13; by overcoming the elastic force of the elastic member to move the limit clamp 13 to the unlocked position, the columnar spring 11 can be free from the restriction of the limit clamp 13.

[0044] Specifically, in this embodiment, one end of the limit clamp 13 away from the columnar spring 11 is rotatably connected to the handle 1, and the other end is a free end, or the limit clamp 13 is vertically slidably connected to the handle 1; by overcoming the elastic force of the elastic member, the limit clamp 13 is pressed down or lifted up, so that the limit clamp 13 can be moved from the locked position to the unlocked position. Preferably, a button extending outside the handle 1 is fixedly connected to the limit clamp 13, and the limit clamp 13 is moved from the locked position to the unlocked position by pressing down or lifting the button.

[0045] like Figure 2 As shown, in the utility model, a plurality of left needle holes 3a corresponding to the left suture needle 7 are circumferentially spaced apart on the left needle disk 3 and the right needle disk 4, a plurality of left needle threading grooves 5a corresponding to and communicating with the left needle hole 3a are circumferentially spaced apart on the left docking rod 5, and the left suture needle 7 is penetrated in the left needle hole 3a and the left needle threading groove 5a; a plurality of right needle holes 4a corresponding to the right suture needle 8 are circumferentially spaced apart on the right needle disk 4, a plurality of right needle threading grooves 6a corresponding to and communicating with the right needle hole 4a are circumferentially spaced apart on the right docking rod 6, and the right suture needle 8 is penetrated in the right needle hole 4a and the right needle threading groove 6a.

[0046] Among them, the tops of the left needle threading groove 5a and the right needle threading groove 6a are open, the width of the left needle threading groove 5a is adapted to the left suture needle 7, and the width of the right needle threading groove 6a is adapted to the right suture needle 8. Without external force, the left suture needle 7 will not slide out of the left needle threading groove 5a, and the right suture needle 8 will not slide out of the right needle threading groove 6a.

[0047] like Figure 2 As shown, in another preferred embodiment, the groove bottoms of the left needle threading groove 5a and the right needle threading groove 6a are both arc-shaped, and the left suture needle 7 and the right suture needle 8 are both arc-shaped. Under the limiting effect of the left needle hole 3a, the left suture needle 7 can slide leftward and radially outward along the arc-shaped groove bottom of the left needle threading groove 5a to pass through the blood vessel wall from the inside to the outside; under the limiting effect of the right needle hole 4a, the right suture needle 8 can slide rightward and radially outward along the arc-shaped groove bottom of the right needle threading groove 6a to pass through the blood vessel wall from the inside to the outside.

[0048] like Figure 2 As shown, the specific limiting effect of the left needle hole 3a on the left suture needle 7 is as follows: the left end of the inner surface of the left needle hole 3a (the side close to the center of the left needle disk 3) abuts against the inner surface of the left suture needle 7, and the right end of the outer surface of the left needle hole 3a (the side close to the outer wall of the left needle disk 3) abuts against the outer surface of the left suture needle 7, so that the left suture needle 7 can only slide to the left and radially outward along the arc-shaped groove bottom of the left needle threading groove 5a. Similarly, the specific limiting effect of the right needle hole 4a on the right suture needle 8 is as follows: the right end of the inner surface of the right needle hole 4a abuts against the inner surface of the right suture needle 8, and the left end of the outer surface of the right needle hole 4a abuts against the outer surface of the right suture needle 8, so that the right suture needle 8 can only slide to the right and radially outward along the arc-shaped groove bottom of the right needle threading groove 6a.

[0049] like Figure 2As shown, further preferably, the left side of the left push block 9 has a left arc surface 9a which is recessed to the right and can abut against the tail of the left suture needle 7. When the left push block 9 pushes the left suture needle 7 out from the left docking rod 5, the tail of the left suture needle 7 slides inward on the left arc surface 9a, and the sliding is smoother; the right side of the right push block 10 has a right arc surface 10a which is recessed to the left and can abut against the tail of the right suture needle 8. The tail of the right suture needle 8 slides inward on the right arc surface 10a, and the sliding is smoother.

[0050] like Figure 2 and Figure 3 As shown, in another preferred embodiment, the left docking rod 5 has a left conical surface 5b with a large end located on the right side for docking with the blood vessel 14, and the needle tip of the left suture needle 7 passes through the left conical surface 5b; the right docking rod 6 has a right conical surface 6b with a large end located on the left side for docking with the blood vessel 14, and the needle tip of the right suture needle 8 passes through the right conical surface 6b. The left conical surface 5b and the right conical surface 6b allow the blood vessel 14 to be clamped thereon smoothly and tightly, preventing the blood vessel 14 from being loosened from the left docking rod 5 and the right docking rod 6 when the left suture needle 7 and the right suture needle 8 pass through.

[0051] like Figure 4 As shown, in order to facilitate the removal of the left needle disk 3 and the right needle disk 4 from the bundle of sutures 2, in one embodiment, a plurality of outlet grooves 3b corresponding to the sutures 2 are provided on the outer walls of the left needle disk 3 and the right needle disk 4 at circumferential intervals, and the outlet grooves 3b are connected with the left needle hole 3a / the right needle hole 4a, and the width of the outlet grooves 3b is adapted to the sutures 2, so that the sutures 2 can be pulled out from the outlet grooves 3b. After all the sutures 2 are pulled out from the left needle disk 3 and the right needle disk 4 through the outlet grooves 3b, the left needle disk 3 and the right needle disk 4 can be removed from the bundle of sutures 2, and then the left docking rod 5, the left push block 9, the right docking rod 6 and the right push block 10 can be taken out from the bundle of sutures 2.

[0052] like Figure 5 As shown, in another embodiment, the left needle disk 3 and the right needle disk 4 are both annular structures with a through hole 3c in the middle, and the annular structure includes two semicircular rings 3d detachably connected (such as clamped) to the left docking rod 5 / right docking rod 6, and the inner wall of the left needle disk 3 / right needle disk 4 is provided with a notch 3e communicating with the left needle hole 3a / right needle hole 4a, and the suture 2 can be pulled out from the notch 3e. Remove the two semicircular rings 3d from the left docking rod 5, and pull the suture 2 out of the left needle hole 3a through the notch 3e, so as to facilitate the removal of the left needle disk 3 from the suture 2 bundle, and similarly, the right needle disk 4 can also be removed.

[0053] In the description of this specification, the description with reference to the terms "preferred embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An ejection-type vascular anastomosis stapler, characterized in that: The device comprises a handle, on which a left needle disk and a right needle disk are fixedly connected and arranged at intervals, wherein the left end of the left needle disk has a left docking rod capable of docking with a blood vessel, and the right end of the right needle disk has a right docking rod capable of docking with a blood vessel; The left needle disk is provided with a plurality of left suture needles at intervals in the circumferential direction, and the right needle disk is provided with a plurality of right suture needles corresponding to the left suture needles at intervals in the circumferential direction, and the corresponding left suture needles and right suture needles are connected by the same suture thread; The handle is slidably connected with a left push block capable of moving along the axial direction of the left needle disk, and a right push block capable of moving along the axial direction of the right needle disk; The handle is also equipped with an elastic unit located between the left push block and the right push block. By releasing the elastic force of the elastic unit, the elastic unit can eject the left push block and the right push block to both sides. The ejected left push block pushes the left suture needle out of the left docking rod and passes through the blood vessel wall from the inside to the outside, and the ejected right push block pushes the right suture needle out of the right docking rod and passes through the blood vessel wall from the inside to the outside.

2. The ejectable vascular anastomosis stapler according to claim 1, characterized in that: The elastic unit includes a columnar spring, a support member fixed to the handle for supporting the columnar spring, and a limiting clamp with a limiting groove. The columnar spring is pressed in the limiting groove of the limiting clamp. By operating the limiting clamp, the columnar spring can escape from the restriction of the limiting clamp.

3. The ejectable vascular anastomosis stapler according to claim 2, characterized in that: The support member comprises a connecting rod fixedly connected to the handle, and a guide rod fixedly connected to the connecting rod and penetrating in the columnar spring. One end of the connecting rod close to the guide rod penetrates into the columnar spring from the side of the columnar spring.

4. The ejectable vascular anastomosis stapler according to claim 2, characterized in that: The limit clamp is elastically connected to the handle through an elastic member. In normal state, the elastic member is in a natural state, the limit clamp is in a locked position, and the columnar spring is located in the limit groove. By overcoming the elastic force of the elastic member to move the limit clamp to an unlocked position, the columnar spring can be freed from the restriction of the limit clamp.

5. The ejectable vascular anastomosis stapler according to claim 4, characterized in that: One end of the limit clamping plate away from the columnar spring is rotatably connected to the handle, and the other end is a free end, or the limit clamping plate is vertically slidably connected to the handle; By overcoming the elastic force of the elastic member to press down or lift up the limiting clamp plate, the limiting clamp plate can move from the locking position to the unlocking position.

6. The ejectable vascular anastomosis stapler according to any one of claims 1 to 5, characterized in that: The left docking rod has a left conical surface with a large end located on the right side for docking with the blood vessel, and the needle tip of the left suture needle passes through the left conical surface; The right docking rod is provided with a right conical surface with a large end located on the left side for docking with the blood vessel, and the needle tip of the right suture needle passes through the right conical surface.

7. The ejectable vascular anastomosis stapler according to any one of claims 1 to 5, characterized in that: The left needle disk and the right needle disk are both provided with a plurality of left needle holes corresponding to the left suture needle at circumferential intervals, and the left docking rod is provided with a plurality of left needle threading grooves corresponding to and communicating with the left needle holes at circumferential intervals, and the left suture needle is inserted into the left needle hole and the left needle threading groove; The right needle disk is provided with a plurality of right needle holes corresponding to the right suture needle at circumferential intervals, the right docking rod is provided with a plurality of right needle threading grooves corresponding to and communicating with the right needle holes at circumferential intervals, and the right suture needle is inserted in the right needle hole and the right needle threading groove.

8. The ejectable vascular anastomosis stapler according to claim 7, characterized in that: The bottoms of the left needle threading groove and the right needle threading groove are both arc-shaped, and the left suture needle and the right suture needle are both arc-shaped; Under the limiting effect of the left needle hole, the left suture needle can slide leftward and radially outward along the arc-shaped groove bottom of the left needle threading groove; Under the limiting effect of the right needle hole, the right suture needle can slide rightward and radially outward along the arc-shaped groove bottom of the right needle threading groove.

9. The ejectable vascular anastomosis stapler according to claim 8, characterized in that: The left side of the left push block has a left arc surface that is recessed to the right and can abut against the tail of the left suture needle, and the right side of the right push block has a right arc surface that is recessed to the left and can abut against the tail of the right suture needle.

10. The ejectable vascular anastomosis stapler according to claim 7, characterized in that: The outer walls of the left needle disk and the right needle disk are provided with a plurality of outlet grooves corresponding to the suture threads at circumferential intervals, the outlet grooves are connected to the left needle hole / right needle hole, and the suture threads can be pulled out from the outlet grooves; Alternatively, the left needle disk and the right needle disk are both annular structures with a through hole in the middle, and the annular structure includes two semicircular rings detachably connected to the left docking rod / right docking rod, and the inner wall of the left needle disk / right needle disk is provided with a notch communicating with the left needle hole / right needle hole, and the suture thread can be pulled out from the notch.

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