CN113892990B

CN113892990B - Quick vascular anastomosis device

Info

Publication number: CN113892990B
Application number: CN202111051128.7A
Authority: CN
Inventors: 宋继勇; 胡敏; 董家鸿; 卢倩
Original assignee: Beijing Tsinghua Changgeng Hospital
Current assignee: Beijing Tsinghua Changgeng Hospital
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2023-08-08
Anticipated expiration: 2041-09-08
Also published as: CN113892990A

Abstract

The invention discloses a rapid vascular anastomosis device which comprises a first end sleeve, a second end sleeve, a nail hammer and a handheld nail firing assembly, wherein the first end sleeve and the second end sleeve are coaxially opened and closed end to end. The first end sleeve comprises a nail bin and a nail hammer, wherein a plurality of nail bin holes which are communicated in the axial direction and used for accommodating the nails are formed in the nail bin; the second end is sleeved with a plurality of nail anvils; the hand-held staple firing assembly is respectively connected with the staple hammer of the first end sleeve and the second end sleeve, and the hand-held staple firing assembly is used for applying clamping force by hand, so that the staple pushing sheet of the staple hammer pushes out staples in corresponding staple cartridge holes and performs vascular suturing under the cooperation of the staple anvil. The rapid vascular anastomosis device can conveniently and rapidly connect blood vessels in a narrow internal space during organ transplantation, has high vascular anastomosis quality, can improve activity after organ transplantation, and reduces the risk of transplantation complications.

Description

Quick vascular anastomosis device

Technical Field

The invention relates to the technical field of medical surgical operation devices, in particular to a vascular rapid anastomosis device.

Background

Through the development of the last century, organ transplantation has become a final-stage means of treating end-stage organ failure. Vascular anastomosis is one of the indispensable steps of organ transplantation. In the vascular anastomosis process, the transplanted organ needs to be placed in a patient, and the transplanted organ enters a 37 ℃ environment from the original cold preservation state, so that the shorter the process is, the better the transplanted organ is; meanwhile, after the original organs are isolated in the operation, the related organs of the body part are in a relative blood stasis state due to the interruption of local blood flow, and the process can also generate corresponding influence on the organs, so that the shorter the operation time is, the smaller the influence on other organs is.

Because of the varying skill level of the surgeon, even the most excellent surgeon, manually engaging a venous vessel having a diameter of about 10mm can take at least 10 minutes while damaging about 10% of the intravascular cross-sectional area, thereby affecting the patency of the blood flow. Thus, the speed and quality of vascular anastomosis directly affects the incidence of post-operative recovery and complications in patients. Improving the vascular anastomosis speed, shortening the empty window period of the organ, and obtaining a satisfactory vascular anastomosis quality at the same time, thereby being one of the methods for further improving the organ transplantation quality.

Over the last decades, patent application of venous vessel occluders has been devised and widely used in the clinic, and many attempts have been made at vascular staplers. Although the existing vascular anastomat realizes the end-to-end anastomosis of partial blood vessels, after anastomosis, a metal ring is left at the anastomotic stoma of the blood vessels, and the metal ring can possibly generate conditions of pressure deflection and the like in the body so as to influence the smoothness of blood flow. Therefore, such vascular anastomat has not been applied to the organ transplantation field so far.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a vascular rapid anastomosis device, which can conveniently and rapidly connect blood vessels in a narrow internal space during organ transplantation, has high vascular anastomosis quality, greatly shortens ischemia time of transplanted organs in a body temperature state, can improve activity after organ transplantation, and reduces risk of transplantation complications.

According to an embodiment of the present invention, a vascular rapid anastomosis device includes:

a stapling assembly consisting of a first end sleeve and a second end sleeve coaxially open and closed end-to-end;

the first end sleeve comprises a nail bin and a nail hammer, wherein the nail bin comprises two independent half nail bins, the two half nail bins are respectively provided with a first half side pipe, one surface of each of the two first half side pipes is respectively provided with a first half side hole, the two first half side pipes are enclosed to form a first pipe, the two first half side holes are enclosed to form a first pipe hole for a blood vessel to pass through, and the two half nail bins are locked in an openable way through a first locking mechanism; the first tube is provided with a plurality of nail bin holes which are communicated in the axial direction and used for accommodating the staples, and the plurality of nail bin holes are arranged along the circumferential direction of the first tube; a first barb is arranged on the periphery of one end of the first pipe; the nail hammer comprises two independent half nail hammers, wherein the two half nail hammers are respectively provided with a half nail hammer pipe, one surface of each half nail hammer pipe is respectively provided with a half perforation, one end of each half nail hammer pipe is respectively provided with a stitching nail pushing piece, the two half nail hammer pipes enclose a synthetic nail hammer pipe, the two half perforation encloses a perforation for the blood supply pipe to pass through, and the aperture of the perforation is consistent with the aperture size of the first pipe hole; the staple pushing sheets on one end of the staple hammer are used for being inserted into a plurality of the staple cartridge holes in a one-to-one corresponding mode from the other end of the first tube; when a plurality of the staple pushing pieces of the staple hammer are inserted into a plurality of the staple cartridge holes, the perforation and the first tube hole are coaxially arranged;

The second end sleeves comprise two half second end sleeves, the two half second end sleeves are respectively provided with a second half pipe, one surface of each of the two second half pipes is respectively provided with a second half hole, the two second half pipes are enclosed to form a second pipe, the two second half holes are enclosed to form a second pipe hole for a blood vessel to pass through, and the two half second end sleeves are locked in an openable way through a second locking mechanism; the second tube and the first tube are coaxially arranged, one end of the second tube is opposite to one end of the first tube and is provided with a plurality of nail anvils, the nail anvils are arranged along the circumferential direction of the second tube, and the nail anvils and the nail bin holes are arranged in a one-to-one correspondence manner; a second barb is arranged on the periphery of one end of the second pipe;

a third locking mechanism is arranged between the first end sleeve and the second end sleeve, the third locking mechanism can open and close the second pipe and the first pipe, and when the third locking mechanism closes the second pipe and the first pipe, one end of the second pipe and one end of the first pipe are in an end-to-end compression state;

the hand-held staple firing assembly is respectively connected with the staple hammer of the first end sleeve and the second end sleeve, so that clamping force is applied by holding the hand-held staple firing assembly, and the staple pushing sheet of the staple hammer pushes out staples in the corresponding staple cartridge holes and performs vascular suturing under the cooperation of the staple anvil.

The vascular rapid anastomosis device provided by the embodiment of the invention has the following advantages: firstly, a preassembled modularized half-and-half type structure is adopted to rapidly anastomose blood vessels in the process of organ transplantation such as liver, so that the operation procedure of vascular anastomosis is greatly simplified, the vascular anastomosis speed is improved, the ischemia time of a transplanted organ in a body temperature state is greatly shortened, the activity after organ transplantation is improved, the peripheral organ extravasated blood time of the transplanted organ caused by local blood flow interruption is shortened, the thrombosis risk is reduced, and the risk of transplantation complications is further reduced; secondly, two blood vessels closely attached to the inner membrane are sutured and fixed by using the staples, so that not only is the suturing speed increased, the end anastomosis strength of the blood vessels improved, blood leakage or loosening at the anastomotic site prevented, but also the damage to the section in the blood vessels is reduced, and the smoothness of blood flow in the blood vessels after anastomosis is ensured; thirdly, the connection of the blood vessel is realized by adopting the way that the blood vessel intima and the blood vessel intima are anastomosed, the anastomosed blood vessel is promoted to be integrated through regrowth, so that the phenomenon of pipe stenosis does not occur at the anastomosed part, the inner surface of the anastomosed blood vessel is smooth, the risk of hemangioma formation is reduced, and the organ transplantation quality is further improved; fourth, through adopting first locking mechanism and second locking mechanism to realize opening and shutting fast to first end cover and second end cover, both can assist the accurate alignment of blood vessel end to end, location and sewing up, can make the anastomotic assembly remove from the anastomotic position of blood vessel after connecting fast safely again after the vascular anastomosis to the efficiency of whole operation has been improved.

According to one embodiment of the invention, the first end cap further comprises a safety ferrule detachably disposed between the hammer and the cartridge.

According to a further embodiment of the invention, the safety ferrule is in the shape of a U-fork.

According to a still further embodiment of the invention, a push piece stop is arranged on the peripheral wall of the two nail hammer half tubes, and the safety clamping sleeve is arranged between the push piece stop and one end part of the nail bin.

According to one embodiment of the invention, the first end cap further comprises two blades, wherein the two blades are respectively attached to one end of the peripheral walls of the two first half tubes; the blade is provided with the first barbs; when the hand-held staple firing assembly is held in a hand to apply a clamping force, the staple hammer pushes the blade out in an axial direction to simultaneously cut off the excess vessel edge during the vessel anastomosis procedure.

According to one embodiment of the invention, one side of each of the two half nail cabins is provided with a first hinge hole, and the two half nail cabins are arranged on a first hinge shaft through the respective first hinge holes so as to realize the hinge connection of the two half nail cabins; the first locking mechanism comprises a first clamping tooth and a first clamping groove, the first clamping tooth is arranged on the other side of one of the two half nail cabins, the first clamping groove is arranged on the other side of the other of the two half nail cabins, and the first clamping tooth is arranged in the first clamping groove in an openable manner;

One side of each of the two half second end sleeves is provided with a second hinge hole, and the two half second end sleeves are arranged on a second hinge shaft through the respective second hinge holes so as to realize the hinge connection of the two half second end sleeves; the second locking mechanism comprises a second latch and a second clamping groove, wherein the second latch is arranged on the other side of one half second end sleeve of the two half second end sleeves, the second clamping groove is arranged on the other side of the other half second end sleeve of the two half second end sleeves, and the second latch is arranged in the second clamping groove in an openable clamping mode.

According to a further embodiment of the present invention, the third locking mechanism includes a first positioning locking column, a second positioning locking column and a locking knob sleeve, wherein the first positioning locking column is fixed on the nail bin, a convex column is arranged on an outer peripheral wall of the first positioning locking column, the second positioning locking column is fixed on the second end sleeve, one end of the locking knob sleeve is rotatably sleeved on the second positioning locking column, a spiral through groove is arranged on the locking knob sleeve, and a concave channel for the convex column to slide into the spiral through groove is arranged on an inner side wall of the other end of the locking knob sleeve;

When the first end sleeve and the second end sleeve need to be closed, sliding the convex column on the first positioning locking column into the spiral through groove from the concave channel of the locking knob sleeve, simultaneously, enabling the first positioning locking column to enter the locking knob sleeve, and rotating the locking knob sleeve to enable the first end sleeve and the second end sleeve to be close to each other end to end and pressed;

when the first end sleeve and the second end sleeve are required to be opened, the locking knob sleeve is reversely rotated so that the first end sleeve and the second end sleeve are far away from each other, and the convex column on the first positioning locking column slides out of the concave channel of the locking knob sleeve.

According to a still further embodiment of the present invention, two third locking mechanisms are provided, the two third locking mechanisms are distributed on two opposite sides of the stapling assembly, and the first positioning locking post and the second positioning locking post of one of the two third locking mechanisms are formed integrally with the first hinge shaft and the second hinge shaft, respectively.

According to some embodiments of the present invention, the hand-held staple firing assembly includes a jaw body including first and second jaw arms connected in an X-shaped cross-hinge; the first clamp arm is divided into a first clamp arm front section and a first clamp arm rear section by taking the connecting part of the X-shaped cross hinged connection as a demarcation point, and the second clamp arm is divided into a second clamp arm front section and a second clamp arm rear section by taking the connecting part of the X-shaped cross hinged connection as a demarcation point; the first clamp mouth structure and the second clamp mouth structure are respectively used for connecting the nail hammer of the first end sleeve and the second end sleeve; the first clamp mouth structure and the second clamp mouth structure are arranged in parallel and distributed on two sides of a connecting part connected through X-shaped cross hinges, the first clamp mouth structure is connected with the first clamp arm front section and the second clamp arm rear section respectively, and the second clamp mouth structure is connected with the second clamp arm front section and the first clamp arm rear section, so that when the first clamp arm rear section and the second clamp arm rear section are relatively close to or far away from each other, the first clamp mouth structure and the second clamp mouth structure can only relatively move close to or far away from each other.

According to a further embodiment of the invention, the front end of the first jaw structure and the front end of the second jaw structure are provided with a U-shaped fork respectively for clamping the hammer and the second end socket of the first end socket respectively.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a vascular rapid anastomosis device according to an embodiment of the present invention.

Fig. 2 is a schematic view of a structure of a vascular rapid anastomosis device according to an embodiment of the present invention when a stapling assembly is opened.

Fig. 3 is a schematic view showing a structure of a stapling assembly in a vascular rapid anastomosis device according to an embodiment of the present invention when the stapling assembly is closed.

Fig. 4 is an exploded view of a first end cap of a vascular rapid anastomosis device according to an embodiment of the present invention.

Fig. 5 is an exploded view of a second end cap of a vascular rapid anastomosis device according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a vascular rapid anastomosis device according to an embodiment of the present invention when the second end cap is opened.

Fig. 7 is a schematic view of a hand-held staple firing assembly in a rapid vascular anastomosis device according to an embodiment of the present invention.

Fig. 8 is a schematic structural view of a third locking mechanism in the vascular rapid anastomosis device according to the embodiment of the present invention.

Fig. 9 is an exploded view of a third locking mechanism of the rapid vascular anastomosis device according to the embodiment of the present invention.

Fig. 10 is a schematic structural view of a safety ferrule in a vascular rapid anastomosis device according to an embodiment of the present invention.

Reference numerals:

vascular rapid anastomosis device 1000

Stapling assembly 1

First end cap 11

Staple cartridge 1101, first tube hole 1104 of first hammer 1102 first tube hole 1103 and staple cartridge hole 1105

The first barb 1106 staples 1107 and the staple pusher 1108 perforate 1109 the safety ferrule 1110

Blade 1112 of push-piece stopper 1111 engages first hinge shaft 1113 with push portion 1115 of hammer tube 1114

Second end cap 12

Second tube 1201 second tube hole 1202 anvil 1203 second hinge shaft 1204 second barb 1205

Arc-shaped sheet 1206

First locking mechanism 13

First latch 1301 first card slot 1302

Second locking mechanism 14

Second latch 1401 second slot 1402

Third locking mechanism 15

First positioning locking post 1501 second positioning locking post 1502 locks knob sleeve 1503 boss 1504

Spiral through slot 1505 and concave slot 1506 rotates rod 1507

Hand-held staple firing assembly 2

Clamp body 21

First jawarm 2101 second jawarm 2102 first jawarm forward section 2103 first jawarm rearward section 2104

Second jawarm forward section 2105 second jawarm rearward section 2106

First and second jaw structures 22, 23 first U-shaped aperture 24 and first stub axle 25

Second U-shaped hole 26 second short shaft 27

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

A vascular rapid anastomosis device 1000 according to an embodiment of the present invention is described below in connection with fig. 1 to 10.

As shown in fig. 1 to 10, a rapid vascular anastomosis device 1000 in accordance with an embodiment of the present invention includes a stapling assembly 1 and a hand-held staple firing assembly 2.

The stapling assembly 1 consists of a first end cap 11 and a second end cap 12 arranged coaxially open and closed end to end.

The first end sleeve 11 comprises a nail cabin 1101 and a nail hammer 1102, the nail cabin 1101 comprises two independent half nail cabins, the two half nail cabins are respectively provided with a first half side pipe, one surface of each of the two first half side pipes is respectively provided with a first half side hole, the two first half side pipes are surrounded to form a first pipe 1103, the two first half side holes are surrounded to form a first pipe hole 1104 for a blood vessel to pass through, and the two half nail cabins are locked in an openable way through a first locking mechanism 13; the first tube 1103 is provided with a plurality of cartridge holes 1105 penetrating in the axial direction for accommodating the staples 1107, and the plurality of cartridge holes 1105 are arranged along the circumferential direction of the first tube 1103; a first barb 1106 is provided on the outer periphery of one end of the first tube 1103; the nail hammer 1102 comprises two independent half nail hammers, wherein the two half nail hammers are respectively provided with half nail hammer pipes, one sides of the two half nail hammer pipes are respectively provided with half perforations, one ends of the two half nail hammer pipes are respectively provided with a staple pushing piece 1108, the two half nail hammer pipes are enclosed to form a nail hammer pipe 1108, the two half perforations are enclosed to form a perforation 1109 for a blood vessel to pass through, and the aperture of the perforation 1109 is consistent with the aperture size of the first pipe hole 1104; staple pushers 1108 on one end of the staple hammer 1102 are for one-to-one fitting insertion into a plurality of staple cartridge holes 1105 from the other end of the first tube 1103; when the plurality of staple pushers 1108 of the staple hammer 1102 are inserted into the plurality of staple cartridge apertures 1105, the perforations 1109 are coaxially disposed with the first tube aperture 1104;

The second end sleeve 12 comprises two half second end sleeves, the two half second end sleeves are respectively provided with a second half pipe, one surface of each of the two second half pipes is respectively provided with a second half hole, the two second half pipes are enclosed to form a second pipe 1201, the two second half holes are enclosed to form a second pipe hole 1202 for the blood vessel to pass through, and the two half second end sleeves are locked in an openable way through a second locking mechanism 14; the second tube 1201 is coaxially arranged with the first tube 1103, one end of the second tube 1201 is opposite to one end of the first tube 1103 and is provided with a plurality of nail anvils 1203, the plurality of nail anvils 1203 are arranged along the circumferential direction of the second tube 1201, and the plurality of nail anvils 1203 are arranged in one-to-one correspondence with the plurality of nail cartridge holes 1105; a second barb 1205 is provided on the outer periphery of one end of the second tube 1201; a third locking mechanism 15 is arranged between the first end sleeve 11 and the second end sleeve 12, the third locking mechanism 15 can open and close the second pipe 1201 and the first pipe 1103, and when the third locking mechanism 15 closes the second pipe 1201 and the first pipe 1103, one end of the second pipe 1201 and one end of the first pipe 1103 are in end-to-end compression;

the hand-held staple firing assembly 2 is adapted to be coupled to the staple hammer 1102 and the second end cap 12, respectively, of the first end cap 11 such that a clamping force is applied by hand-holding the hand-held staple firing assembly 2 such that the staple pusher 1108 of the staple hammer 1102 ejects the staples 1107 in the corresponding cartridge aperture 1105 and performs vascular stapling in cooperation with the anvil 1203.

Specifically, the stapling assembly 1 consists of a first end cap 11 and a second end cap 12 arranged coaxially open and closed end to end; that is, the first and second end caps 11 and 12 are disposed along the same axis, and the first and second end caps 11 and 12 may be separated so that the two severed blood vessels may pass through the first and second end caps 11 and 12, respectively, and the first and second end caps 11 and 12 may be closed end-to-end to compress so that the two severed blood vessels may be compressed end-to-end to facilitate the vascular anastomosis procedure. As shown in fig. 2 to 4, the first end sleeve 11 includes a nail bin 1101 and a nail hammer 1102, the nail bin 1101 includes two independent half nail bins, the two half nail bins are respectively provided with a first half side tube, one surface of the two first half side tubes is respectively provided with a first half side hole, the two first half side tubes enclose a first tube 1103 and the two first half side holes enclose a first tube hole 1104 for a blood vessel to pass through, in this way, after a broken end of one broken blood vessel of two broken blood vessels to be sutured passes through the first tube hole 1104 from the other end of the first tube 1103, the broken end of the blood vessel is outwards turned and sleeved on the periphery of one end of the first tube 1103; the two half staple cartridges are locked in an openable manner by the first locking mechanism 13, that is, when the first locking mechanism 13 locks, the two first half side tubes can be stably enclosed into a first tube 1103; when the first locking mechanism 13 is opened, the two half staple cartridges of the first end sleeve 11 can be opened quickly, so that the first end sleeve 11 can be conveniently and quickly moved out of the body after vascular anastomosis is completed, thereby being beneficial to improving the efficiency of the whole operation.

The first tube 1103 is provided with a plurality of cartridge holes 1105 penetrating in the axial direction for accommodating the staples 1107, and the plurality of cartridge holes 1105 are arranged along the circumferential direction of the first tube 1103; that is, in use, the staple cartridge hole 1105 is filled with staples 1107, the staples 1107 can move axially in the staple cartridge hole 1105, and by circumferentially arranging a plurality of staple cartridge holes 1105, the staples 1107 are distributed around the connected blood vessels after two disconnected blood vessels to be sutured are sutured, thereby ensuring the anastomosis strength of the blood vessel ends and preventing blood leakage or loosening at the anastomoses.

The first barb 1106 is provided on the outer circumference of one end of the first tube 1103, and the first barb 1106 is used for fixing the everted blood vessel end, so that the blood vessel end can be stably fixed on the first tube 1103.

When the first end sleeve 11 is used, the first locking mechanism 13 is locked first, so that after the broken end of one of two broken blood vessels to be sutured passes through the first tube hole 1104 from the other end of the first tube 1103, the broken end of the blood vessel is everted and sleeved on the periphery of one end of the first tube 1103, and the blood vessel is preliminarily fixed through the first barb 1106.

The nail hammer 1102 comprises two independent half nail hammers, wherein the two half nail hammers are respectively provided with half nail hammer pipes, one sides of the two half nail hammer pipes are respectively provided with half perforations, one ends of the two half nail hammer pipes are respectively provided with a nail pushing piece 1108, the nail pushing piece 1108 is used for pushing a nail 1107 out of a nail bin hole 1105, the two half nail hammers surround the synthetic nail hammer pipe 1108, the two half perforation surrounds the synthetic perforation 1109 for a blood vessel to pass through, and the aperture of the perforation 1109 is consistent with the aperture size of the first pipe hole 1104; staple pushers 1108 on one end of the staple hammer 1102 are for one-to-one fitting insertion into a plurality of staple cartridge holes 1105 from the other end of the first tube 1103; when the staple pushers 1108 of the staple hammer 1102 are inserted into the staple cartridge apertures 1105, the perforations 1109 are disposed coaxially with the first tube aperture 1104. It can be appreciated that by arranging the nail hammer 1102, after the end-to-end fixation of the vascular intima to be anastomosed is completed, the nail 1107 is pushed to move along the nail bin hole 1105 by the nail pushing piece 1108 on the nail hammer 1102, and the vascular intima is penetrated and overlapped, so that the nailing connection fixation of the vascular intima is realized.

As shown in fig. 2 to 3 and fig. 5 to 6. The second end sleeve 12 comprises two half second end sleeves, wherein the two half second end sleeves are respectively provided with a second half pipe, one surface of each of the two second half pipes is respectively provided with a second half hole, the two second half pipes are enclosed into a second pipe 1201, and the two second half holes are enclosed into a second pipe hole 1202 for a blood vessel to pass through, so that after the broken end of the other broken blood vessel of the two broken blood vessels to be sutured passes through the second pipe hole from the other end of the second pipe 1201, the broken end of the blood vessel is outwards turned over and sleeved on the periphery of one end 1201 of the second pipe; the two half second end caps are locked by the second locking mechanism 14 in an openable manner, that is, when the second locking mechanism 14 is locked, the two half second end caps can be stably enclosed into the second pipe 1201; when the second locking mechanism 14 is opened, the two halves of the second end cap 12 can be quickly opened, so that the second end cap 12 can be conveniently and quickly moved out of the body after vascular anastomosis is completed, thereby being beneficial to improving the efficiency of the whole operation. The second tube 1201 is coaxially arranged with the first tube 1103, one end of the second tube 1201 is opposite to one end of the first tube 1103 and is provided with a plurality of nail anvils 1203, the nail anvils 1203 are grooves formed on the second tube 1201, the bottoms of the grooves are concave arc surfaces, and the nail anvils 1203 are used for bending the staples 1107 under the cooperation of the nail hammer 1102 to realize the suturing or stapling of blood vessels; the plurality of anvil 1203 are arranged along the circumferential direction of the second tube 1201, and the plurality of anvil 1203 are arranged in one-to-one correspondence with the plurality of cartridge holes 1105. In the use process, the end parts of the staples 1107 penetrate through the blood vessels after superposition and then are contacted with the nail anvil 1203, the staple pushing sheet 1108 continues to push the staples 1107, the staple feet of the staples 1107 can bend along the arc-shaped surface of the nail anvil 1203, so that the end parts of the staples 1107 are pressed on the blood vessels needing anastomosis, the end-to-end connection of the blood vessel intima is realized, and the blood vessel anastomosis effect is good. A second barb 1205 is provided on the outer periphery of one end of the second tube 1201; the second barb 1205 is used to secure the everted blood vessel so that the blood vessel may be stably secured to the second tube 1201. In a specific example, the second barbs 1205 are disposed on the arcuate piece 1206, and the arcuate piece 1206 is attached to the outer peripheral wall of the second tube 1201 and is secured to the second tube 1201, thereby securing the second barbs 1205 to the second tube 1201.

When the second end cap 12 is used, the second locking mechanism is locked 14, so that after the broken end of the other vessel of the two broken vessels to be sutured passes through the second tube hole 1202 from the other end of the second tube 1201, the broken end of the vessel is everted and sleeved on the periphery of one end of the second tube 1201, and the vessel is preliminarily fixed by the second barb 1205.

A third locking mechanism 15 is provided between the first end cap 11 and the second end cap 12, the third locking mechanism 15 being capable of opening and closing the second pipe 1201 and the first pipe 1103, and when the third locking mechanism 15 closes the second pipe 1201 and the first pipe 1103, one end of the second pipe 1201 and one end of the first pipe 1103 are in end-to-end compression. It can be appreciated that by providing the third locking mechanism 15, when the broken end of one of the two broken blood vessels to be sutured passes through the first tube hole 1104 and is everted and sleeved on the periphery of one end of the first tube 1103, the broken end of the other of the two broken blood vessels to be sutured passes through the second tube hole 1202 and is everted and sleeved on the periphery of one end of the second tube 1201, and is initially fixed by the second barb 1205, the third locking mechanism 15 can be locked, so that the intima of the broken ends of the two broken blood vessels to be sutured is tightly attached, the suture 1107 is facilitated to pass through and firmly sutured, the quality of vascular anastomosis is improved, the inner surface of the blood vessel after anastomosis is smooth, and the risk of hemangioma formation is reduced.

As shown in fig. 1, the hand-held staple firing assembly 2 is adapted to be coupled to the staple hammer 1102 and the second end cap 12, respectively, of the first end cap 11 such that a clamping force is applied by hand-holding the hand-held staple firing assembly 2 such that the staple pusher 1108 of the staple hammer 1102 pushes out the staples 1107 in the corresponding cartridge aperture 1105 and performs vascular stapling in cooperation with the anvil 1203. That is, the hand-held staple firing assembly 2 is used to transfer the clamping force of the user to the staple hammer 1102, causing the staple pusher 1108 on the staple hammer 1102 to push staples 1107 out of the staple cartridge aperture 1105 and staple the severed vessel, with high efficiency, good results, and ease of rapid and convenient attachment of the user to the vessel in a confined in-vivo space.

The working process of the vascular quick anastomosis device 1000 of the embodiment of the invention for vascular anastomosis is as follows: when the blood vessels are anastomosed, the first end sleeve 11 is locked by the first locking mechanism 13, and the second end sleeve 12 is locked by the second locking mechanism 14; after one of the two blood vessels to be connected sequentially passes through the perforation 1109 and the first tube hole 1104, the open end is everted and sleeved on the periphery of one end of the first tube 1103 and fixed through the first barb 1106, and after the other of the two blood vessels to be connected passes through the second tube hole 1202 from the other end of the second tube 1201, the open end is everted and sleeved on the periphery of one end of the second tube 1201 and fixed through the second barb 1205; locking the third locking mechanism 15 so as to align and press the blood vessels to be anastomosed on the first tube 1103 and the second tube 1201 end to end, and tightly press the anastomosed surface to a given thickness; after checking that the two blood vessels to be anastomosed are aligned and attached without errors, the hand-held staple firing assembly 2 is respectively connected with the staple hammer 1102 of the first end sleeve 11 and the second end sleeve 12, then the hand-held staple firing assembly 2 is held by hand to apply clamping force to push the staple hammer 1102 to move relative to the staple cartridge 1101 to drive the staple pusher 1108 to push out the staples 1107 in the corresponding staple cartridge holes 1105, the staples 1107 are folded and closed after penetrating through the overlapped blood vessel walls by touching the staple anvil 1203, a plurality of stapling units are circumferentially arranged on the staple cartridge holes 1105 and the staple anvil 1203 for accommodating the staples 1107, and therefore a plurality of stapling units can be formed around the blood vessels to be anastomosed, and vascular anastomosis is completed.

After the vascular anastomosis process is completed, the hand-held stitching nail firing assembly 2 is detached from the first end sleeve 11 and the second end sleeve 12, the third locking mechanism 15 is opened, the first end sleeve 11 and the second end sleeve 12 are completely separated, the first locking mechanism 13 and the second locking mechanism 14 are opened respectively, and the first end sleeve 11 and the second end sleeve 12 are rapidly moved out of the body from the blood vessel connected and anastomosed. The end-to-end anastomosis of the blood vessels is completed, the anastomosis process is short in time consumption, high in operation speed, convenient to operate and good in anastomosis effect, the ischemia time of the transplanted organ in a body temperature state can be greatly shortened, the activity of the transplanted organ is improved, and the risk of complications of the transplanted organ is reduced.

The vascular rapid anastomosis device 1000 according to the embodiment of the invention has the following advantages: firstly, a preassembled modularized half-and-half type structure is adopted to rapidly anastomose blood vessels in the process of organ transplantation such as liver, so that the operation procedure of vascular anastomosis is greatly simplified, the vascular anastomosis speed is improved, the ischemia time of a transplanted organ in a body temperature state is greatly shortened, the activity after organ transplantation is improved, the peripheral organ extravasated blood time of the transplanted organ caused by local blood flow interruption is shortened, the thrombosis risk is reduced, and the risk of transplantation complications is further reduced; secondly, two broken blood vessels tightly attached to the inner membrane are circumferentially sutured and fixed by using the staples 1107, so that not only is the suturing speed increased, the end anastomosis strength of the blood vessels improved, blood leakage or loosening at the anastomotic site prevented, but also the damage to the section in the blood vessels is reduced, and the smoothness of blood flow in the blood vessels after anastomosis is ensured; thirdly, connecting the blood vessels in a manner that the blood vessel intima is anastomosed with the blood vessel intima, promoting the anastomosed blood vessels to form a whole through regrowth, avoiding the phenomenon of pipe stenosis at the anastomosed part, ensuring smooth inner surface of the anastomosed blood vessels, reducing the risk of hemangioma formation, and further improving the quality of organ transplantation; fourth, through adopting first locking mechanism 13 and second locking mechanism 14 to realize the quick opening and shutting to first end cover 11 and second end cover 12, both can assist the accurate alignment of blood vessel end to end, location and sewing up, can make the anastomotic assembly 1 can be removed from the anastomotic site of blood vessel after connecting rapidly and safely after the vascular anastomosis to the efficiency of whole operation has been improved.

According to one embodiment of the present invention, as shown in FIG. 3, the first holster 11 further includes a safety ferrule 1110, the safety ferrule 1110 being removably disposed between the hammer 1102 and the staple cartridge 1101. It will be appreciated that the placement of the safety ferrule 1110 between the hammer 1102 and the cartridge 1101 prior to anastomosis of the blood vessel prevents the hammer 1102 from moving relative to the cartridge 1101, causing the problem of misstriking the staples 1107 and accidentally pushing them out of the cartridge 1101. When the blood vessel is required to be sutured, the safety clamping sleeve 1110 is pulled out along the direction perpendicular to the radial direction of the blood vessel, so that the blood vessel suturing device is convenient to use.

According to a further embodiment of the invention, as shown in fig. 10, the safety ferrule 1110 is U-shaped fork-like. It should be noted that, the safety ferrule 1110 is made of a material with a certain toughness, can be deformed in a certain range, is in a U-shape and fork-like shape, so that the safety ferrule 1110 can be rapidly extracted and inserted along the direction perpendicular to the radial direction of the blood vessel, and is convenient to use.

According to yet a further embodiment of the present invention, as shown in FIG. 3, a pusher block 1111 is provided on the peripheral wall of the half-tubes of the two hammers 1102, and a safety sleeve 1110 is provided between the pusher block 1111 and one end of the staple cartridge 1101. That is, when the hammer 1102 moves relative to the cartridge 1101, the push plate stopper 1111 must be driven to move, and when the safety sleeve 1110 is clamped between the push plate stopper 1111 and one end of the cartridge 1101, the push plate stopper 1111 cannot move towards one end of the cartridge 1101 due to the blocking effect of the safety sleeve 1110, so that the hammer 1102 cannot move, and the effect of preventing the hammer 1102 from striking the staples 1107 by mistake is achieved.

According to one embodiment of the invention, the first end cap 11 further comprises two blades 1112, the two blades 1112 being attached to one end of the peripheral wall of the two first half tubes, respectively; the blade 1112 is provided with a first barb 1106, the first barb 1106 being for securing an everted blood vessel. When the staple firing assembly 2 is held by hand with a clamping force, the hammer 1102 is pushed out of the blade 1112 in an axial direction to simultaneously cut off the excess vessel edge during the vessel anastomosis. That is, blade 1112 is used to remove residual blood vessels that are everted except at the anastomotic site, and the edges of the removed blood vessels will be removed after the third locking mechanism 15 is opened. When the staple hammer 1102 pushes the staples 1107 out of the staple cartridge 1101, the staple hammer 1102 simultaneously pushes the blades 1112 so that the blades 1112 cross the vascular anastomosis site to simultaneously cut off the vascular edges, thereby improving the operation efficiency. In a specific example, the blade 1112 includes a plurality of pushing portions 1115 connected to the blade 1112, the pushing portions are disposed opposite to the cutting edge of the blade 1112, through holes corresponding to the pushing portions 1115 one by one are provided on the periphery of the first tube 1103 in the cartridge hole 1105, and the pushing portions 1115 are fittingly inserted into the through holes and fixed with the pusher block 1111 of the hammer 1102.

According to one embodiment of the invention, one side of each of the two half staple cartridges is provided with a first hinge hole, and the two half staple cartridges are mounted on the first hinge shaft 1113 through the respective first hinge holes so as to realize the hinge of the two half staple cartridges; the first locking mechanism 13 includes a first latch 1301 and a first catch 1302, the first latch 1301 being provided on the other side of one of the two half staple cartridges, the first catch 1302 being provided on the other side of the other of the two half staple cartridges, the first latch 1301 being openably caught in the first catch 1302. It will be appreciated that when it is desired to open the staple cartridge 1101, i.e., to open the first locking mechanism 13, the first latch 1301 is removed from the first slot 1302 and the two staple cartridge halves are rotated about the first hinge 1113.

One side of the two half second end sleeves is provided with a second hinge hole, and the two half second end sleeves are arranged on the second hinge shaft 1204 through the respective second hinge holes so as to realize the hinge connection of the two half second end sleeves; the second locking mechanism 14 includes a second latch 1401 and a second catch 1402, the second latch 1401 being provided on the other side of one of the two half second end caps, the second catch 1402 being provided on the other side of the other of the two half second end caps, the second latch 1401 being openably caught in the second catch 1402. It will be appreciated that when it is desired to open the second looper 12, i.e., to open the second locking mechanism 14, the second latch 1401 is removed from the second slot 1402 and the two halves of the second looper are rotated along the second hinge 1204.

According to a further embodiment of the present invention, as shown in fig. 2 and 8 to 9, the third locking mechanism 15 includes a first positioning locking column 1501, a second positioning locking column 1502 and a locking knob sleeve 1503, where the first positioning locking column 1501 is fixed on the staple cartridge 1101, a protrusion 1504 is provided on an outer peripheral wall of the first positioning locking column 1501, the second positioning locking column 1502 is fixed on the second end sleeve 12, one end of the locking knob sleeve 1503 is rotatably sleeved on the second positioning locking column 1502 (i.e. the locking knob sleeve 1503 is sleeved on an outer peripheral wall of the second positioning locking column 1502 and does not axially move along the second positioning locking column 1502 but can circumferentially rotate around the second positioning locking column 1502), a spiral through groove 1505 is provided on the locking knob sleeve 1503, and a recess 1506 for sliding the protrusion 1504 into the spiral through groove 1505 is provided on an inner side wall of the other end of the locking knob sleeve 1503.

When the first and second end caps 11, 12 need to be closed, sliding the boss 1504 on the first positioning locking post 1501 from the recess 1506 of the locking knob sleeve 1503 into the spiral through slot 1505, simultaneously, the first positioning locking post 1501 entering the locking knob sleeve 1503, and rotating the locking knob sleeve 1503 such that the first and second end caps 11, 12 are brought closer together end-to-end and compressed; when the first and second end caps 11, 12 need to be opened, the locking knob sleeve 1503 is rotated in the opposite direction so that the first and second end caps 11, 12 are moved away from each other and the boss 1504 on the first positioning locking post 1501 slides out of the recess 1506 of the locking knob sleeve 1503, thereby enabling rapid separation of the first and second end caps 11, 12. Therefore, the opening and locking operation of the third locking mechanism is very convenient, and the operation time of vascular anastomosis surgery is shortened.

According to still further embodiments of the present invention, two third locking mechanisms 15 are provided, and the two third locking mechanisms 15 are distributed on two opposite sides of the stapling assembly 1, so that two opposite sides of the stapling assembly 1 can be locked simultaneously, and a locking effect is ensured, and the first positioning locking column 1501 and the second positioning locking column 1502 of one third locking mechanism 15 in the two third locking mechanisms 15 are respectively formed integrally with the first hinge shaft 1113 and the second hinge shaft 1204, so that the structure of the vascular quick anastomosis device 1000 according to the embodiment of the present invention is more compact.

According to still further embodiments of the present invention, a rotation lever 1507 is provided on the locking knob sleeve 1503 for facilitating the rotation of the locking knob sleeve 1503 by medical operators.

According to some embodiments of the present invention, as shown in fig. 7, the hand-held staple firing assembly 2 includes a jaw body 21, a first jaw structure 22, and a second jaw structure 23, the jaw body 21 including a first jaw arm 2101 and a second jaw arm 2102 connected in an X-shaped cross-hinge; the first clamp arm 2101 is divided into a first clamp arm front section 2103 and a first clamp arm rear section 2104 by taking a connecting part of X-shaped cross hinged connection as a demarcation point, and the second clamp arm 2102 is divided into a second clamp arm front section 2105 and a second clamp arm rear section 2106 by taking a connecting part of X-shaped cross hinged connection as a demarcation point; the first and second jaw structures 22, 23 are used to connect the hammer 1102 and the second end cap 12 of the first end cap 11, respectively; the first jaw structure 22 and the second jaw structure 23 are arranged in parallel and distributed on two sides of a connecting part of the X-shaped cross hinged connection, the first jaw structure 22 is respectively connected with the first jaw front section 2103 and the second jaw rear section 2106, and the second jaw structure 23 is respectively connected with the second jaw front section 2105 and the first jaw rear section 2104, so that when the first jaw rear section 2104 and the second jaw rear section 2106 are relatively close to or far away from each other, the first jaw structure 22 and the second jaw structure 23 can only relatively move close to or far away from each other.

In one particular example, the first jaw structure 22 is connected to the first jaw forward section 2103 and the second jaw rearward section 2106, respectively, and the second jaw structure 23 is connected to the second jaw forward section 2105 and the first jaw rearward section 2104, respectively. Specifically, referring to fig. 7, the first jaw structure 22 is provided with a first U-shaped hole 24 for the first jaw arm front section 2103 and the second jaw arm rear section 2106 and the second jaw structure 23 to be respectively placed on the second jaw arm front section 2106 and the first jaw arm rear section 2104, the first jaw arm front section 2103 and the second jaw arm rear section 2106 and the second jaw arm front section 2105 and the first jaw arm rear section 2104 are respectively placed in the corresponding first U-shaped hole 24, and the first jaw structure 22 is hinged with the first jaw arm front section 2103 and the second jaw structure 23 and the second jaw arm front section 2105 through a first short shaft 25;

the first clamp mouth structure 22 and the second clamp mouth structure 23 are respectively provided with a second U-shaped hole 26; the first clamp arm back section 2104 and the second clamp arm back section 2106 are respectively provided with a second short shaft 27, two ends of the second rotating shaft are respectively located in the corresponding second U-shaped holes 26, and when the first clamp arm 2101 and the second clamp arm 2102 rotate oppositely or back to each other, the second short shafts 27 can slide along the second U-shaped holes 26.

That is, when the first clamp arm 2101 and the second clamp arm 2102 rotate towards or away from each other, the first clamp arm 2101 and the second clamp arm 2102 drive the first clamp mouth structure 22 and the second clamp mouth structure 23 to move towards or away from each other through the first short shaft 25, and the second short shaft 27 can slide in the second U-shaped hole 26 to limit the movement of the first clamp mouth structure 22 and the second clamp mouth structure 23 towards or away from each other to the opposite translation or the opposite translation.

According to yet a further embodiment of the invention, the front end of the first jaw structure 22 and the front end of the second jaw structure 23 are provided with a U-shaped fork respectively for holding the hammer 1102 of the first end socket 11 and the second end socket 12 respectively. The adoption of the U-shaped fork nozzle can enable the hand-held stitching nail firing assembly 2 to be conveniently and rapidly connected with the stitching assembly 1 or taken down from the stitching assembly 1, thereby being beneficial to improving the efficiency of the whole operation.

According to yet a further embodiment of the present invention, a spring (not shown) is disposed between the first and second jawarm rear sections 2104, 2106 and is configured to hold the hand-held staple firing assembly 2 in an open condition when the hand-held staple firing assembly 2 is not in use.

According to one embodiment of the present invention, the vascular rapid anastomosis device 1000 may be manufactured from different materials as desired, and is suitable for both disposable use and repeated use by sterilization. When used as a reusable surgical instrument, the various parts may be made of metallic materials such as titanium and its alloys, medical grade stainless steel, and the like. When used as a disposable surgical instrument, some of the components may be made of high strength medical polymers such as PEEK.

According to one embodiment of the present invention, as shown in fig. 1 to 6, the first tube 1103, the hammer 1102 and the second tube 1201 are circular or elliptical tubes, and accordingly, the first tube hole 1104, the perforation 1109 and the second tube hole 1202 are circular or elliptical holes. Thus, the shape of the blood vessel can be mutually matched, and the blood vessel can be better fixed.

According to one embodiment of the present invention, the staples 1107 are made of titanium metal or an alloy thereof in the form of inverted U-shape, and both ends of the staples 1107, i.e., the portions of the stitches are provided with sharp chamfers so that the staples 1107 can rapidly and smoothly pierce the vessel wall with anastomosed vessel folds.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vascular rapid anastomosis device, comprising:

the hand-held staple firing assembly is respectively connected with the staple hammer of the first end sleeve and the second end sleeve, so that clamping force is applied by holding the hand-held staple firing assembly, and the staple pushing sheet of the staple hammer pushes out the staples in the corresponding staple cartridge holes and performs vascular suturing under the cooperation of the staple anvil.

2. The rapid vascular anastomosis device of claim 1, wherein the first end cap further comprises a safety ferrule removably disposed between the hammer and the cartridge.

3. The vascular rapid anastomosis device of claim 2, wherein the safety ferrule is U-shaped fork-like.

4. The rapid vascular anastomosis device of claim 3, wherein a pusher block is provided on the peripheral wall of the two hammer halves, and the safety ferrule is disposed between the pusher block and one end of the cartridge.

5. The rapid vascular anastomosis device of claim 1, wherein the first cuff further comprises two blades, the two blades being attached to one end of the peripheral walls of the two first half tubes, respectively; the blade is provided with the first barbs; when the hand-held staple firing assembly is held in a hand to apply a clamping force, the staple hammer pushes the blade out in an axial direction to simultaneously cut off the excess vessel edge during the vessel anastomosis procedure.

6. The rapid vascular anastomosis device of claim 1, wherein one side of each of the two half staple cartridges is provided with a first hinge hole, and the two half staple cartridges are mounted on a first hinge shaft through the respective first hinge holes so as to realize the hinge connection of the two half staple cartridges; the first locking mechanism comprises a first clamping tooth and a first clamping groove, the first clamping tooth is arranged on the other side of one of the two half nail cabins, the first clamping groove is arranged on the other side of the other of the two half nail cabins, and the first clamping tooth is arranged in the first clamping groove in an openable manner;

7. The rapid vascular anastomosis device of claim 6, wherein the third locking mechanism comprises a first positioning locking column, a second positioning locking column and a locking knob sleeve, wherein the first positioning locking column is fixed on the nail bin, a convex column is arranged on the peripheral wall of the first positioning locking column, the second positioning locking column is fixed on the second end sleeve, one end of the locking knob sleeve is rotatably sleeved on the second positioning locking column, a spiral through groove is arranged on the locking knob sleeve, and a concave channel for the convex column to slide into is arranged on the inner side wall of the other end of the locking knob sleeve;

8. The vascular anastomosis device of claim 7, wherein the third locking mechanisms are two, the two third locking mechanisms are distributed on two opposite sides of the stapling assembly, and the first positioning locking post and the second positioning locking post of one of the two third locking mechanisms are integrally formed with the first hinge shaft and the second hinge shaft, respectively.

9. The rapid vascular anastomosis device according to any one of claims 1-8, wherein the hand-held staple firing assembly comprises a jaw body including first and second jaw arms in an X-shaped cross-articulated connection, a first jaw structure and a second jaw structure; the first clamp arm is divided into a first clamp arm front section and a first clamp arm rear section by taking the connecting part of the X-shaped cross hinged connection as a demarcation point, and the second clamp arm is divided into a second clamp arm front section and a second clamp arm rear section by taking the connecting part of the X-shaped cross hinged connection as a demarcation point; the first clamp mouth structure and the second clamp mouth structure are respectively used for connecting the nail hammer of the first end sleeve and the second end sleeve; the first clamp mouth structure and the second clamp mouth structure are arranged in parallel and distributed on two sides of a connecting part connected through X-shaped cross hinges, the first clamp mouth structure is connected with the first clamp arm front section and the second clamp arm rear section respectively, and the second clamp mouth structure is connected with the second clamp arm front section and the first clamp arm rear section respectively, so that when the first clamp arm rear section and the second clamp arm rear section are relatively close to or far away from each other, the first clamp mouth structure and the second clamp mouth structure can only relatively move close to or far away from each other.

10. The rapid vascular anastomosis device of claim 9, wherein the front end of the first and second jaw structures are provided with respective U-shaped prongs for gripping the hammer and the second end socket of the first end socket, respectively.