Foldable circular (tubular) anastomosis device under endoscope

Abstract

A foldable circular (tubular) anastomosis device under an endoscope comprises a nail anvil assembly, a nail bin assembly, a nail pushing assembly and a power assembly. The nail anvil assembly is provided with a plurality of nail anvil plates which can be folded or unfolded in the radial direction; the nail bin assembly is detachably connected with the nail anvil assembly, the nail bin assembly is provided with a plurality of nail bin plates which can be folded or unfolded in the radial direction, and cutting knives which can move in the axial direction are arranged on the inner side faces of the nail bin plates; the nail pushing assembly is installed in the nail bin plate and provided with a nail pushing block and a knife pushing block. The power assembly is used for controlling the nail cutting board or the nail bin board to be folded or unfolded and pushing the nail pushing assembly to move in the nail groove so as to complete nail cutting of the tissue. The characteristic that a circular (tubular) anastomosis device can be folded is fully utilized, the space limitation of an endoscope puncture outfit is broken through, circular end-side anastomosis or end-end anastomosis under a full endoscope is achieved, a wound is minimally invasive, high efficiency and safety are achieved, and the operation time is effectively shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of anastomotic devices, and in particular to a laparoscopically foldable circular (tubular) anastomotic device. Background Art

[0002] Existing circular (tubular) stapler technology and equipment cannot be placed into the abdominal cavity or thoracic cavity through a laparoscopic puncture device, and cannot achieve full laparoscopic end-to-side anastomosis and end-to-end anastomosis. An additional abdominal or chest incision is required for placement and anastomosis of the circular (tubular) stapler, which not only increases surgical trauma, prolongs surgery and anesthesia time, but also increases the chances of wound infection, cleavage, incisional hernia and other incision complications. Therefore, there is an urgent need for a circular (tubular) stapler that can pass through a laparoscopic puncture device into the thoracic and abdominal cavity for full laparoscopic anastomosis. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a laparoscopic foldable circular (tubular) anastomosis device, and the specific technical solution is as follows: A laparoscopic foldable circular (tubular) anastomotic device, comprising: The nail anvil assembly is provided with a plurality of nail anvil plates that can be radially retracted or expanded, and the nail anvil plates are spliced ​​into a circular tube after being expanded, and the end faces of the nail anvil plates are provided with nail pits; A staple cartridge assembly is detachably connected to the staple anvil assembly, the staple cartridge assembly is provided with a plurality of staple cartridge plates that can be radially retracted or extended, and the extended staple cartridge plates are spliced ​​into a circular tube shape, the inner end surfaces of the staple cartridge plates close to the staple pits are provided with staple grooves for placing staples, the staple grooves are aligned one by one with the staple pits, and the inner side surfaces of the staple cartridge plates are provided with axially movable cutting knives; A staple pusher assembly is installed in the staple magazine plate, and the staple pusher assembly is provided with a staple pusher block for pushing the staples to be stapled on the staple pits and a knife pusher block for pushing the cutting knife to cut tissue; and The power assembly is used to control the staple anvil plate or staple magazine plate to retract or expand, and push the staple push assembly to move in the staple groove to complete the staple cutting of the tissue.

[0004] Furthermore, the anvil assembly also includes an anvil movable support seat and an anvil fixed support seat, and the corresponding positions of the anvil movable support seat and the anvil fixed support seat are hinged with a first anvil support rod and a second anvil support rod in pairs, and the outer end and inner side surface of each anvil plate are respectively hinged to the paired first anvil support rod and the second anvil support rod; the power assembly drives the anvil movable support seat to move axially.

[0005] Furthermore, the anvil assembly also includes an anvil connecting rod, the rear end of the anvil connecting rod is connected to the anvil fixed support seat, and the anvil movable support seat is axially movably connected to the front end of the anvil connecting rod.

[0006] Furthermore, a movable slide groove is axially provided on the inner side surface of the anvil movable support seat, and a guide strip which can slide in the movable slide groove is provided on the outer side surface of the anvil connecting rod.

[0007] Furthermore, the nail magazine assembly also includes a nail magazine movable support seat and a nail magazine fixed support seat, and the first nail magazine support rod and the second nail magazine support rod are hinged in pairs at the corresponding positions of the nail magazine movable support seat and the nail magazine fixed support seat, the inner side surface of each nail magazine plate is hinged to the second nail magazine support rod, and the nail pushing assembly in the nail magazine plate is hinged to the first nail anvil support rod paired with the second nail magazine support rod; the power assembly can drive the nail magazine movable support seat, the nail magazine fixed support seat or drive the nail pushing assembly to move axially.

[0008] Furthermore, a knife slide groove for installing a cutting knife is provided on the inner side surface of the nail magazine, and the knife pushing assembly pushes the cutting knife to move it in the knife slide groove.

[0009] Furthermore, the power assembly includes a nail magazine pusher rod, a nail magazine power rod and a nail anvil power rod, the nail magazine pusher rod is connected to the nail magazine movable support seat, the nail magazine power rod is movably sleeved in the nail magazine pusher rod, the nail magazine movable support seat and the nail magazine fixed support seat, and the nail magazine power rod is threadedly connected to the nail magazine fixed support seat to drive the nail magazine fixed support seat to move axially; the nail anvil power rod is movably sleeved in the nail magazine power rod and the nail anvil connecting rod, and is connected to the internal thread of the nail anvil connecting rod.

[0010] Furthermore, a nail magazine pusher rod is extended from the tail end of the nail magazine power rod, and a nail magazine power rod is extended from the tail end of the nail anvil power rod.

[0011] Furthermore, the front end of the nail magazine power rod is threadedly connected or snap-connected to the rear end of the nail anvil connecting rod.

[0012] Furthermore, the anvil assembly and the nail magazine assembly are covered with an openable protective sleeve.

[0013] Beneficial effects: The foldable circular (tubular) nail anvil assembly and nail magazine assembly of the present invention can meet all end-to-end anastomosis and end-to-side anastomosis requirements under laparoscopy and thoracoscopic surgery. In addition, for some patients with moderate to severe obesity, patients with narrow chest and pelvic spaces that are relatively difficult to expose, and patients with high surgical difficulty and high anastomosis requirements, the foldable characteristic of the circular (tubular) anastomosis device can be fully utilized to break through the space limitation of the laparoscopic puncture device and realize circular end-to-side anastomosis or end-to-end anastomosis under full laparoscopy, with minimally invasive wounds, high efficiency and safety, effectively shortening the operation time, and avoiding the side injuries and complications of other anastomosis methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the decomposition of the present invention.

[0015] Figure 2 It is a partial cutaway view of the nail anvil assembly of the present invention.

[0016] Figure 3 It is a top view of the nail anvil assembly of the present invention when it is folded and unfolded.

[0017] Figure 4 It is a schematic diagram of the movable support seat of the nail anvil of the present invention.

[0018] Figure 5 It is a schematic diagram of the nail anvil connecting rod of the present invention.

[0019] Figure 6 It is a partial cutaway view of the nail magazine assembly of the present invention.

[0020] Figure 7 It is a schematic diagram of the inner side of the nail magazine plate of the present invention.

[0021] Figure 8 Schematic diagram of the push blade assembly of the present invention.

[0022] Fig. 9 It is a cross-sectional view of the anvil assembly and the nail magazine assembly of the present invention after being connected.

[0023] Fig.10 It is a schematic diagram of the pressing after the nail anvil board and the nail magazine board of the present invention are unfolded.

[0024] Fig.11 It is a schematic diagram of nailing after the nail anvil board and the nail magazine board of the present invention are unfolded.

[0025] In the figure: 1 anvil assembly, 11 anvil plate, 12 nail pit, 13 anvil movable support seat, 14 anvil fixed support seat, 15 first anvil support rod, 16 second anvil support rod, 17 anvil connecting rod, 18 movable slide groove, 19 guide strip; 2 nail magazine assembly, 21 nail magazine plate, 22 nail groove, 23 cutting knife, 24 nail magazine movable support seat, 25 nail magazine fixed support seat, 26 first nail magazine support rod, 27 second nail magazine support rod, 28 knife slide groove, 29 anastomosis staple; 3 nail pushing assembly, 31 nail pushing block, 32 knife pushing block; 4 power assembly, 41 nail magazine knife pushing rod, 42 nail magazine power rod, 43 nail anvil power rod; 5 protective sleeve, 51 protective cover; 6 intestinal tissue. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0027] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] like Figures 1 to 11 As shown, a laparoscopic foldable circular (tubular) anastomosis device includes a nail anvil assembly 1, a nail magazine assembly 2, a nail pusher assembly 3 and a power assembly 4; wherein: The nail anvil assembly 1 is provided with a plurality of nail anvil plates 11 that can be radially retracted or expanded, and the expanded nail anvil plates 11 are spliced ​​into a circular tube shape, and the end surface of the nail anvil plate 11 is provided with a nail pit 12; The staple cartridge assembly 2 is detachably connected to the staple anvil assembly 1, and the staple cartridge assembly 2 is provided with a plurality of staple cartridge plates 21 that can be radially retracted or expanded, and each staple cartridge plate 21 after expansion is spliced ​​into a circular tube shape, and the inner end surface of the staple cartridge plate 21 close to the staple pit 12 is provided with a staple groove 22 for placing the staples 29, and the inner side surface of each staple cartridge plate 21 is provided with an axially movable cutting knife 23; The staple pusher assembly 3 is installed in the staple magazine plate 21, and is provided with a staple pusher block 31 for pushing the staples 29 to be stapled on the staple pit 12, and a knife pusher block 32 for pushing the cutting knife 23 to cut tissue; The power assembly 4 is used to control the anvil plate 11 or the staple cartridge plate 21 to move in or out, and to push the staple push assembly 3 to move in the staple groove 22 to complete the staple cutting of the tissue.

[0030] Specifically, each anvil board 11 and nail magazine board 21 are all close to their respective central axes when in the folded state, and are arranged in a staggered manner inside and outside. The outer anvil board 11 and nail magazine board 21 partially surround the inner anvil board 11 and nail magazine board 21, thereby reducing the outer diameter for free entry and exit of the abdominal puncture hole; the unfolded anvil boards 11 are spliced ​​with each other, and the unfolded nail magazine boards 21 are also spliced ​​with each other. The shape after splicing is approximately a circular tube, and the unfolded anvil boards 11 and nail magazine boards 21 are accurately aligned in the staggered position, thereby achieving a one-to-one alignment of the nail grooves 22 and the nail pits 12.

[0031] like Figures 2 to 5 As shown, the anvil assembly 1 also includes an anvil movable support seat 13 and an anvil fixed support seat 14, and the corresponding positions of the anvil movable support seat 13 and the anvil fixed support seat 14 are hinged with a first anvil support rod 15 and a second anvil support rod 16 in pairs, and the outer end and inner side surface of each anvil plate 11 are respectively hinged to the paired first anvil support rod 15 and second anvil support rod 16; the power assembly 4 drives the anvil movable support seat 13 to move axially.

[0032] In one embodiment, the anvil assembly 1 further comprises an anvil connecting rod 17 , the tail end of which is connected to the anvil fixed support seat 14 , and the anvil movable support seat 13 is axially movably connected to the front end of the anvil connecting rod 17 .

[0033] Preferably, in the folded state, the movable anvil support seat 13 is partially or completely located on the outside of the anvil plate 11 , and the fixed anvil support seat 14 is partially or completely located on the inside of the nail magazine plate 21 .

[0034] Specifically, when the position of the anvil fixed support seat 14 is relatively fixed, when the anvil movable support seat 13 moves axially in a direction close to the anvil fixed support seat 14, the first anvil support rod 15 pushes each anvil plate 11 to expand radially, and at the same time, the second anvil support rod 16 follows the rotation on the anvil fixed support seat 14, and finally realizes the expansion of each anvil plate 11; conversely, when the anvil movable support seat 13 moves axially in a direction away from the anvil fixed support seat 14, each anvil plate 11 is radially retracted.

[0035] like Figure 4 , 5 As shown, a movable slot 18 is axially provided on the inner side surface of the anvil movable support seat 13, and a guide bar 19 is provided on the outer side surface of the anvil connecting rod 17, which can slide in the movable slot 18, and the movable slot 18 guides the guide bar 19 to move axially; a limit may also be set in the movable slot 18, or a limit may be set at the hinge point of the first anvil support rod 15 or the second anvil support rod 16 to limit the maximum distance that the anvil movable support seat 13 can move axially, thereby controlling the maximum outer diameter of each anvil plate 11 when unfolded.

[0036] like Figures 6 to 8 As shown, the nail magazine assembly 2 also includes a nail magazine movable support seat 24 and a nail magazine fixed support seat 25, and the corresponding positions of the nail magazine movable support seat 24 and the nail magazine fixed support seat 25 are hinged with a first nail magazine support rod 26 and a second nail magazine support rod 27 in pairs, the inner side surface of each nail magazine plate 21 is hinged to the second nail magazine support rod 27, and the nail pushing assembly 3 in the nail magazine plate 21 is hinged to the first nail anvil support rod 15 paired with the second nail magazine support rod 27; the power assembly 4 can drive the nail magazine movable support seat 24, the nail magazine fixed support seat 25 or drive the nail pushing assembly 3 to move axially.

[0037] Preferably, in the folded state, the movable nail magazine support seat 24 is partially or completely located on the outside of the nail magazine plate 21 , and the fixed nail magazine support seat 25 is partially or completely located on the inside of the nail magazine plate 21 .

[0038] like Figure 7 , 8 As shown, the inner side surface of the staple cartridge is provided with a knife slide groove 28 for installing the cutting knife 23, and the knife pusher assembly pushes the cutting knife 23 to move it in the knife slide groove 28. The staple pusher block 31 is located in the staple slot 22, and the knife pusher block 32 is directly opposite to the knife slide groove 28, and the staple pusher block 31 is longer than the knife pusher block 32, so that the staples 29 are pushed first and then the cutting knife 23 is pushed. Exemplarily, the knife pusher assembly can be installed by clamping between the staple slot 22 and the knife slide groove 28, and the movable range during clamping can ensure that the cutting knife 23 is pushed out of the end side surface of the staple cartridge plate 21 to achieve tissue cutting.

[0039] like Figure 1 , 9 As shown in Figure 11, the power assembly 4 includes a nail magazine pusher rod 41, a nail magazine power rod 42 and a nail anvil power rod 43. The nail magazine pusher rod 41 is connected to the nail magazine movable support seat 24, and the nail magazine power rod 42 is movably sleeved in the nail magazine pusher rod 41, the nail magazine movable support seat 24 and the nail magazine fixed support seat 25, and the nail magazine power rod 42 is threadedly connected to the nail magazine fixed support seat 25 to drive the nail magazine fixed support seat 25 to move axially. When the fixed support seat moves axially, it can move to the front end of the nail magazine power rod 42; the nail anvil power rod 43 is movably sleeved in the nail magazine power rod 42 and the nail anvil connecting rod 17, and is connected to the internal thread of the nail anvil connecting rod 17.

[0040] Specifically, the nail magazine power rod 42 is held to keep the position of the nail magazine fixed support seat 25 relatively fixed, and the nail magazine pusher rod 41 is pushed forward, so that when the nail magazine movable support seat 24 moves axially toward the nail magazine fixed support seat 25, the first anvil support rod 15 pushes each nail magazine plate 21 to expand radially. At the same time, the second anvil support rod 16 rotates on the nail magazine fixed support seat 25, and finally each nail magazine plate 21 is expanded; conversely, when the nail magazine pusher rod 41 is pulled backward, when the nail magazine movable support seat 24 moves axially away from the nail magazine fixed support seat 25, each nail magazine plate 21 is radially retracted.

[0041] It should be noted that a limit may be set at the hinge point of the first nail magazine support rod 26 or the second nail magazine support rod 27 to limit the maximum distance that the first nail magazine support rod 26 or the second nail magazine anvil can be expanded, thereby controlling the maximum outer diameter of each nail magazine plate 21 when expanded; at the same time, the maximum outer diameter of the nail magazine plate 21 when expanded is consistent with the maximum outer diameter of the anvil plate 11 when expanded, so as to ensure alignment and stapling.

[0042] When the staple magazine plate 21 is unfolded, the staple magazine pusher rod 41 is held to keep the position of the staple magazine movable support seat 24 relatively fixed and restrict it from rotating, and the staple magazine power rod 42 is rotated. Since the staple magazine movable support seat 24 cannot rotate with it, the staple magazine fixed support seat 25 moves axially under the action of the thread, and the staple magazine pusher rod 41 moves axially with it, thereby driving the staple magazine plate 21 to approach the nail anvil plate 11 to squeeze the tissue. When the staple magazine power rod 42 is held again to push the staple magazine pusher rod 41 forward, the first staple magazine support rod 26 drives the pusher assembly forward, and the pusher block 31 hits the staples 29 in the staple groove 22 to form staples, and the pusher assembly continues to move forward, and the pusher block 32 pushes the cutting knife 23 out of the knife slide groove 28 to achieve tissue cutting.

[0043] like Fig. 9 As shown, the front end of the staple magazine power rod 42 is threadedly or snap-connected to the rear end of the staple anvil connecting rod 17, and the threaded or snap-connected interface position is limited to ensure that each staple anvil plate 11 and staple magazine plate 21 are aligned one by one in a staggered position when in a folded or unfolded state, so as to ensure that the staples 29 are accurately matched with the staple pits 12, thereby improving the quality of staple formation.

[0044] Specifically, hold the nail magazine power rod 42, keep the position of the anvil fixed support seat 14 relatively fixed, and rotate the anvil power rod 43. Since the guide bar 19 of the anvil connecting rod 17 is restricted by the movable slide groove 18 of the anvil movable support seat 13, the anvil connecting rod 17 cannot be rotated. When rotating, the anvil power rod 43 will drive the anvil connecting rod 17 to move axially, and the anvil connecting rod 17 will then drive the anvil movable support seat 13 to move axially, so as to use the axial movement of the anvil movable support seat 13 to control the retraction and expansion of each anvil plate 11.

[0045] In one embodiment, the tail end of the nail magazine power rod 42 extends out of the nail magazine pusher rod 41, and the tail end of the nail anvil power rod 43 extends out of the nail magazine power rod 42, so as to facilitate the control of the coordinated operation of each rod.

[0046] It should be noted that the staple magazine push rod 41, the staple magazine power rod 42 or the staple anvil power rod 43 can also be program-controlled by a motor to output power to achieve automatic squeezing, stapling and cutting.

[0047] like Figure 1 As shown, the anvil assembly 1 and the staple cartridge assembly 2 are sleeved with an openable protective sleeve 5 to ensure a sterile environment; the protective sleeve 5 is provided with an openable protective cover 51 to facilitate removal of the anastomosis device.

[0048] like Figures 9 to 11 As shown, taking the cutting and anastomosis of intestinal tissue 6 as an example, the steps of using the anastomosis device are as follows: (1) Open the protective sleeve 5, disassemble the anvil assembly 1, and place it into the intestinal tissue 6 to be anastomosed; (2) If Fig. 9 , placing the staple cartridge assembly 2 into the intestinal tissue 6 to be anastomosed from the other end of the intestinal tube; (3) The anvil assembly 1 and the cartridge assembly 2 are connected by threads or snaps to achieve assembly of the anastomotic device in the intestinal tissue 6; (4) If Fig.10 , hold the nail magazine power rod 42, rotate the nail anvil power rod 43, move the nail anvil movable support seat 13 towards the nail anvil fixed support seat 14, and unfold each nail anvil plate 11; (5) Holding the nail magazine power rod 42, push the nail magazine pusher rod 41 forward to unfold each nail magazine plate 21; (6) Holding the staple cartridge pusher rod 41, rotating the staple cartridge power rod 42, and driving the staple cartridge plate 21 to move toward the direction close to the staple anvil plate 11, thereby squeezing the tissue; (7) Fig.11 , holding the staple cartridge power rod 42, continue to push the staple cartridge knife push rod 41 forward, and push the knife push block 32 to fire the staples 29 into staples; (8) Continue to push the staple cartridge pusher rod 41 forward, pushing the pusher block 32 so that the cutting knife 23 completes cutting of the tissue; (9) Holding the nail magazine pusher rod 41, the nail magazine power rod 42 is rotated in the opposite direction to move the nail anvil plate 11 and the nail magazine plate 21 away from each other; (10) Referring to the above steps, the anvil power rod 43 and the magazine power rod 42 are operated in reverse order to control the anvil plates 11 and the magazine plates 21 to retract; (11) The anastomosis device is removed from the intestinal tissue 6 as a whole, completing an anastomosis and cutting operation.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A laparoscopic foldable circular (tubular) anastomotic device, characterized in that: include: The nail anvil assembly is provided with a plurality of nail anvil plates that can be radially retracted or expanded, and the nail anvil plates are spliced ​​into a circular tube after being expanded, and the end faces of the nail anvil plates are provided with nail pits; A staple cartridge assembly is detachably connected to the staple anvil assembly, the staple cartridge assembly is provided with a plurality of staple cartridge plates that can be radially retracted or extended, and the extended staple cartridge plates are spliced ​​into a circular tube shape, the inner end surfaces of the staple cartridge plates close to the staple pits are provided with staple grooves for placing staples, the staple grooves are aligned one by one with the staple pits, and the inner side surfaces of the staple cartridge plates are provided with axially movable cutting knives; A staple pusher assembly is installed in the staple magazine plate, and is provided with a staple pusher block for pushing the staples to be stapled on the staple pits and a knife pusher block for pushing the cutting knife to cut tissue; and The power assembly is used to control the staple anvil plate or staple magazine plate to retract or expand, and push the staple push assembly to move in the staple groove to complete the staple cutting of the tissue.

2. The laparoscopic foldable circular (tubular) anastomosis device according to claim 1, characterized in that: The anvil assembly also includes an anvil movable support seat and an anvil fixed support seat, and the first anvil support rod and the second anvil support rod are hinged in pairs at corresponding positions of the anvil movable support seat and the anvil fixed support seat, and the outer end and inner side surface of each anvil plate are respectively hinged to the paired first anvil support rod and the second anvil support rod; the power assembly drives the anvil movable support seat to move axially.

3. The laparoscopic foldable circular (tubular) anastomosis device according to claim 2, characterized in that: The anvil assembly further comprises an anvil connecting rod, the tail end of which is connected to the anvil fixed support seat, and the anvil movable support seat is axially movably connected to the front end of the anvil connecting rod.

4. The laparoscopic foldable circular (tubular) anastomosis device according to claim 3, characterized in that: A movable sliding groove is axially provided on the inner side surface of the nail anvil movable supporting seat, and a guide strip which can slide in the movable sliding groove is provided on the outer side surface of the nail anvil connecting rod.

5. The laparoscopic foldable circular (tubular) anastomosis device according to claim 3, characterized in that: The nail magazine assembly also includes a nail magazine movable support seat and a nail magazine fixed support seat, and the first nail magazine support rod and the second nail magazine support rod are hinged in pairs at the corresponding positions of the nail magazine movable support seat and the nail magazine fixed support seat, the inner side surface of each nail magazine plate is hinged on the second nail magazine support rod, and the nail pushing assembly in the nail magazine plate is hinged on the first nail anvil support rod paired with the second nail magazine support rod; the power assembly can drive the nail magazine movable support seat, the nail magazine fixed support seat or drive the nail pushing assembly to move axially.

6. The laparoscopic foldable circular (tubular) anastomosis device according to claim 5, characterized in that: The inner side surface of the nail bin is provided with a knife sliding groove for installing a cutting knife, and the knife pushing assembly pushes the cutting knife to make it move in the knife sliding groove.

7. The laparoscopic foldable circular (tubular) anastomosis device according to claim 5, characterized in that: The power assembly includes a nail magazine pusher rod, a nail magazine power rod and a nail anvil power rod. The nail magazine pusher rod is connected to the nail magazine movable support seat. The nail magazine power rod is movably sleeved in the nail magazine pusher rod, the nail magazine movable support seat and the nail magazine fixed support seat, and the nail magazine power rod is threadedly connected to the nail magazine fixed support seat to drive the nail magazine fixed support seat to move axially; the nail anvil power rod is movably sleeved in the nail magazine power rod and the nail anvil connecting rod, and is connected to the internal thread of the nail anvil connecting rod.

8. The laparoscopic foldable circular (tubular) anastomosis device according to claim 7, characterized in that: The tail end of the nail magazine power rod extends out of a nail magazine pusher rod, and the tail end of the nail anvil power rod extends out of a nail magazine power rod.

9. The laparoscopic foldable circular (tubular) anastomosis device according to claim 7, characterized in that: The front end of the nail magazine power rod is threadedly connected or snap-connected to the rear end of the nail anvil connecting rod.

10. The laparoscopic foldable circular (tubular) anastomosis device according to claim 1, characterized in that: The nail anvil assembly and the nail magazine assembly are covered with an openable protective sleeve.

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