Tube anastomat with retractable anvil seat

Abstract

The present application discloses a kind of pipe anastomat with retractable nail seat, to solve the problem that existing pipe anastomat cannot realize minimally invasive surgery, thereby leading to large surgical wound, long recovery time, increase patient's pain and other problems.The present application includes retractable nail seat, nail seat opening mechanism, anastomosis firing mechanism;Nail seat can be connected with nail seat opening mechanism to form implantation mechanism assembly, when nail seat is in the state of contraction, it can make nail seat pass through minimally invasive artificial hole, puncture through organ cavity wall, so that nail seat enters the organ cavity to be connected, then operate nail seat opening mechanism to realize nail seat expansion;Anastomosis firing mechanism and nail seat are connected to form anastomat assembly, which completes the nail anastomosis between cavities, excess tissue resection and cavity channel reconstruction in living organisms.The present application realizes the channel reconstruction operation of pipe anastomat in minimally invasive surgery environment, which makes the operation have small wound, short recovery time, reduces patient's pain and other advantages.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and more particularly, to a tubular anastomat with retractable anvil seat. BACKGROUND

[0002] Currently, when a surgeon performs surgery to remove a pathological part of a human tubular physiological tissue such as the stomach, esophagus, and intestines, if the channel between the organs is also cut off due to the removal of the pathological part, the good physiological tissue remaining in the organ needs to be connected to functionally reconstruct the channel. Currently, this channel reconstruction surgery generally uses a tubular anastomat as a connecting tool, and in an open surgery environment, a purse-string forceps is used to make a purse at one end of the physiological tissue to be connected, and an anvil seat (commonly known as a mushroom head) of the tubular anastomat is implanted and fixed in the purse; then the puncture needle of the tubular anastomat is pierced out at the other end of the physiological tissue to be connected, connected with the anvil seat, and the channel reconstruction is completed by operating the tubular anastomat.

[0003] The main problem of the existing tubular anastomat is that the surgery can only be performed in an open surgery environment, because the purse-string forceps itself is relatively large in size, and the operation of making a purse also requires a relatively large operating space, which cannot be realized under minimally invasive surgery conditions. Open surgery has a large incision, a long recovery time, and increases the pain of the patient. Therefore, there is an urgent need for a tubular anastomat that can realize channel reconstruction under minimally invasive surgery conditions. SUMMARY

[0004] The present application provides a tubular anastomat with retractable anvil seat, which can realize channel reconstruction operation of the tubular anastomat under minimally invasive surgery conditions through the cooperation of the retractable anvil seat, the anvil seat opening mechanism, and the anastomat firing mechanism. The present application has the advantages of small surgical incision, short recovery time, and reduced patient pain.

[0005] In order to realize the anastomosis of the pipeline between the biological cavities under minimally invasive surgery conditions, the present application adopts the following technical scheme: a tubular anastomat with retractable anvil seat, comprising a retractable anvil seat, an anvil seat opening mechanism, and an anastomat firing mechanism; the anvil seat can be connected with the anvil seat opening mechanism to form an anvil seat implantation mechanism assembly in the biological organ cavity, when the anvil seat is in a retracted state, the anvil seat can pass through the artificial hole of minimally invasive surgery and puncture through the organ cavity wall, so that the anvil seat enters the organ cavity to be connected; then the anvil seat opening mechanism is operated to completely deploy the anvil seat in the cavity; the anastomat firing mechanism has the function of penetrating the cavity wall of another biological organ to be connected and connecting with the deployed anvil seat, forming an anastomat assembly to complete the anastomosis, removal of excess tissue, and reconstruction of the channel between the cavities in the biological body. The present application avoids the use of a purse-string forceps, the operation of making a purse to implant and fix the anvil seat, and realizes the reconstruction of the channel between the organs under minimally invasive surgery conditions, which makes the surgical incision small, reduces pain, and shortens the recovery time.

[0006] As preferred, the nail seat includes a main connecting pipe assembly, a sliding piece, a plurality of support pieces one, a plurality of support pieces two, a plurality of crossbars, a plurality of crossbar pull ropes and a pull rope device; the main connecting pipe assembly includes a main connecting pipe, the sliding piece is slidingly inserted into the main connecting pipe; one end of the support piece one is hinged to the main connecting pipe, the other end of the support piece one is hinged to the crossbar, the crossbar is connected with the crossbar pull rope, the crossbar pull rope passes through the pull rope hole on the main connecting pipe and is connected with the pull rope device, the pull rope device is located in the main connecting pipe and can move axially along the main connecting pipe; one end of the support piece two is hinged to the support piece one, the other end is hinged to the sliding piece. When the sliding piece moves in the main connecting pipe towards the nail seat opening mechanism direction, the sliding piece will drive the support piece two to move, and the support piece two will drive the support piece one to expand radially in the main connecting pipe; when the pull rope device moves along the main connecting pipe towards the nail seat opening mechanism direction, the pull rope device will drive the pull rope to make the crossbar rotate around the end of the support piece one, and then make the crossbar expand to form a polygonal nail seat.

[0007] As preferred, the nail seat opening mechanism includes an opening mechanism body, an opening mechanism connecting piece, a sleeve and a puncture needle; the opening mechanism connecting piece is fixedly connected with the opening mechanism body and has the function of being connected with the nail seat; the sleeve is coaxial with the opening mechanism connecting piece and is sleeved outside the opening mechanism connecting piece; the puncture needle is coaxially installed in the opening mechanism connecting piece; the opening mechanism body is composed of some manual or electric mechanisms and can be designed as a handle shape and have some manual rod systems, manual knobs or electric buttons; operating these mechanisms can make the sleeve and the puncture needle move axially relative to the opening mechanism connecting piece.

[0008] As preferred, the anastomosis firing mechanism includes a firing mechanism body, a firing mechanism front pipe, a firing mechanism connecting piece, a nail cartridge and a circular knife; the firing mechanism front pipe is a circular or polygonal hollow cylinder and is fixedly connected with the firing mechanism body; the firing mechanism connecting piece is an octahedral cylinder with a puncture cone head, is coaxially installed in the firing mechanism front pipe and can be connected with the nail seat; the anastomosis firing mechanism body is composed of some electric or manual components, under the operation of the anastomosis firing mechanism body, the firing mechanism connecting piece can move axially relative to the firing mechanism front pipe, and the main connecting pipe of the nail seat connected with the anastomosis firing mechanism can be moved into the firing mechanism front pipe and fixed; the nail cartridge is composed of anastomosis nails and anastomosis nail pushers, under the operation of the mechanisms in the firing mechanism body, the anastomosis nails can be pushed out of the nail cartridge by the anastomosis nail pushers, abut against the nail seat and complete tissue anastomosis; the circular knife is composed of polygonal blades, under the operation of the mechanisms in the firing mechanism body, the circular knife can move coaxially and oppositely relative to the firing mechanism connecting piece, reach the nail seat and complete tissue cutting to form a passage between cavities. The firing mechanism body is composed of some electric or manual components and can be designed as a handle shape and have some manual rod systems, manual knobs or electric buttons.

[0009] As preferred, the main connecting pipe assembly of the stopper seat further comprises a main connecting positioner, a main connecting position pin; the main connecting positioner is a polygonal column in shape, and its inner hole is composed of a polygonal surface and a circular surface, and two main connecting positioner pin holes are formed on the wall and coaxially fixed in the main connecting pipe; the main connecting position pin is located in the main connecting positioner pin hole, and the position of the main connecting positioner pin hole corresponds to the main connecting pipe U-shaped groove of the main connecting pipe.

[0010] As preferred, the inner hole of one end of the main connecting pipe assembly of the main connecting pipe insertion sliding piece is circular, and the inner hole of the other end connected with the opening mechanism or the firing mechanism is polygonal, the polygonal inner hole is fixedly matched with the main connecting positioner and slidably matched with the pull rope device; the circular inner hole section is provided with a sliding piece positioning groove in which the support rod is unfolded; the side surface of the polygonal inner hole section is provided with two U-shaped grooves, forming two cantilever beam elastic pieces; the polygonal inner hole section is further provided with two positioning pin holes for positioning the pull rope device; the outer wall of the main connecting pipe is provided with an organ position formed by a necking, so that the penetrated organ cavity wall is relatively stable at the position of the necking.

[0011] As preferred, the front end of the sliding piece is a hollow conical body, which can form a puncture body with the puncture needle, and the rear end is a hollow cylindrical body, and two U-shaped grooves are formed on the cylindrical body, forming two cantilever beams along the axial direction of the cylindrical body, and an inner boss and an outer boss are arranged on the end of the cantilever beam. When the sliding piece is installed in the main connecting pipe, the outer boss of the cantilever beam is extruded by the inner hole wall of the main connecting pipe, and the cantilever beam enters the inside of the sliding piece, so that the inner hole of the sliding piece is reduced in diameter and is smaller than the step of the puncture needle; when the puncture needle is pulled back, the step of the puncture needle will move the sliding piece until the sliding piece reaches the sliding piece positioning groove of the main connecting pipe, the outer boss of the cantilever beam enters the groove, the cantilever beam rebounds, the sliding piece is enlarged in inner diameter, the puncture needle passes through the sliding piece and continues to move; at this time, the relative position of the sliding piece and the main connecting pipe is fixed and no longer moves with the puncture needle, and the support rod system is unfolded and fixed in place.

[0012] As preferred, the pull rope device comprises a sliding block, a spring piece and a positioning pin; the sliding block can slide in the axial direction in the main connecting pipe; the spring piece is installed in the groove of the sliding block; and the positioning pin is installed in the side hole of the sliding block and can move in the side hole in the axial direction of the side hole.

[0013] As preferred, the front end of the puncture needle is a cone, the rear end is connected with the nail seat opening mechanism, and the middle part has a step, which can pass through the opening mechanism connector, the main connector tube, and the sliding member to make axial movement. When the puncture needle completes the penetration of the organ cavity wall and makes the retractable nail seat enter the cavity, under the operation of the nail seat opening mechanism, it moves towards the opening mechanism body, which drives the sliding member to move, expands the support member two, and expands the support member one. When the sliding member moves to the sliding member positioning groove of the main connector tube, the cantilever beam of the U-shaped groove on the sliding member is opened, the relative position of the sliding member and the main connector tube is fixed, the support member one and the support member two are fully expanded and fixed; the puncture needle continues to move through the sliding member to contact the pull rope device, drives the pull rope to move, and the pull rope drives the horizontal rod to rotate around the end of the support member one, so that the horizontal rod is expanded; when the pull rope device moves to the main connector tube positioning pin hole, the positioning pin in the pull rope device enters the positioning pin hole of the main connector tube under the pushing of the spring sheet, and the relative position of the pull rope device and the main connector tube is fixed, so that the horizontal rod is fully expanded to form a polygonal nail seat in the organ cavity; the central hole of the pull rope device has a larger diameter after the positioning pin enters the positioning hole of the main connector tube, so that the step of the puncture needle can pass through, and the puncture needle is withdrawn from the retractable nail seat under the operation of the opening mechanism.

[0014] As preferred, the sleeve is a thin-walled cylindrical structure coaxial with the opening mechanism connector, one end of which is connected with the opening mechanism body and can move axially along the opening mechanism connector under the operation of the nail seat opening mechanism. When the implantation mechanism assembly is formed to implement the puncture of the organ cavity wall, the sleeve moves to the conical head of the sliding member to form a smooth transition with the conical head, so that the complex geometry inside the retractable nail seat will not cause damage to the punctured organ tissue during the puncture process, and the puncture can be smoothly performed; the sleeve will first retreat to the U-shaped groove position of the main connector tube before the subsequent expansion process of the retractable nail seat, so as to block the outward movement of the cantilever beam elastic sheet and ensure the reliable connection between the opening mechanism connector and the main connector tube assembly of the retractable nail seat.

[0015] Compared with the prior art, the present application has the following advantages: the retractable nail seat is provided, which is combined with the nail seat opening mechanism to form an implantation mechanism assembly, realizes the expansion of the nail seat through the artificial hole of the minimally invasive surgery, and then connects the anastomosis firing mechanism with the expanded nail seat to form an anastomosis device assembly, so as to complete the nailing anastomosis between cavities, the removal of excess tissue, and the reconstruction of the cavity channel in the organism, thereby avoiding the use of a purse-string forceps, the manufacture of a purse-string head implantation fixed nail seat, and other operations, realizing the channel reconstruction operation of the tubular anastomosis device in the minimally invasive surgery environment, so that the tubular anastomosis device can realize the minimally invasive surgery, and achieve the purpose of small surgical incision, short recovery time, and reduced patient pain. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of a tubular anastomosis device with a retractable nail seat according to the present application;

[0017] Figure 2 is the structural schematic diagram of the staple seat opening mechanism of the present application;

[0018] Figure 3 is the sectional view of the retracted state of the staple seat of the present application;

[0019] Figure 4 is the structural schematic diagram of the opened state of the staple seat of the present application;

[0020] Figure 5 is the sectional view of the opened state of the staple seat of the present application;

[0021] Figure 6 is the structural schematic diagram of the anastomosis firing mechanism of the present application;

[0022] Figure 7 is the front view of the main connecting pipe of the present application;

[0023] Figure 8 is the sectional view at "A-A" in Figure 7 ;

[0024] Figure 9 is the structural schematic diagram of the slider of the present application;

[0025] Figure 10 is the sectional view at "B-B" in Figure 9 ;

[0026] Figure 11 is the structural schematic diagram of the working state of the stretcher of the present application;

[0027] Figure 12 is the structural schematic diagram of the ejected and locked state of the stretcher of the present application;

[0028] In the figure: 100, staple seat, 200, staple seat opening mechanism, 300, anastomosis firing mechanism, 110, main connecting pipe assembly, 111, main connecting pipe, 112, main connecting positioning pin, 113, main connecting positioner, 114, main connecting pipe U-shaped slot, 115, organ wall positioning slot, 116, slider positioning slot, 120, slider, 121, hollow cone, 122, hollow cylinder, 123, inner boss, 124, outer boss, 130, support piece one, 140, support piece two, 150, pull rope device, 151, sliding block, 152, spring piece, 153, positioning pin, 160, horizontal rod pull rope, 170, horizontal rod, 201, opening mechanism main body, 202, opening mechanism connecting piece, 203, puncture needle, 204, sleeve, 301, firing mechanism main body, 302, firing mechanism front pipe, 303, firing mechanism connecting piece, 304, staple cartridge, 305, circular cutting knife. DETAILED DESCRIPTION

[0029] It is to be understood that the specific embodiments described herein are merely illustrative of the present application and do not limit the scope of the application.

[0030] The technical solutions of the present application are further described below through specific embodiments and in conjunction with the drawings: Embodiment 1: a tubular anastomat with a retractable staple seat. It is characterized by comprising a retractable staple seat 100, a staple seat opening mechanism 200, and an anastomosis firing mechanism 300. The staple seat 100 can be connected with the staple seat opening mechanism 200 to form an implantation mechanism assembly of the retractable staple seat 100 in the biological organ cavity. When the retractable staple seat 100 is in a retracted state, the implantation mechanism assembly can enable the retractable staple seat 100 to pass through the artificial hole of the minimally invasive surgery, puncture through the organ cavity wall, and enter the organ cavity to be connected, and then operate the staple seat opening mechanism 200 to expand the retractable staple seat into a complete staple seat in the cavity. The anastomosis firing mechanism 300 has the function of penetrating the biological organ cavity wall and connecting with the expanded staple seat, and constitutes an anastomat assembly to complete the functions of stapling anastomosis between cavities, excess tissue resection, and cavity channel reconstruction in the biological body.

[0031] The staple seat 100 comprises a main connecting pipe assembly 110, a sliding member 120, a plurality of support members one 130, a plurality of support members two 140, a plurality of crossbars 170, a plurality of crossbar pull ropes 160, and a pull rope device 150. The main connecting pipe assembly 110 comprises a main connecting pipe 111. The sliding member 120 is coaxially and slidingly inserted into the main connecting pipe 111. The support member one 130 is hingedly connected to one end of the main connecting pipe 111, hingedly connected to the other end of the crossbar 170, and hingedly connected to one end of the support member two 140. The other end of the support member two 140 is hingedly connected to the sliding member 120. One end of the crossbar 170 is hingedly connected to the support member one 130, and the other end is connected to the crossbar pull rope 160. One end of the crossbar pull rope 160 is connected to the crossbar, and the other end passes through the pull rope hole in the main connecting pipe 111 and is connected to the pull rope device 150. The pull rope device 150 is located in the main connecting pipe 111 and can move axially along the main connecting pipe 111.

[0032] When the sliding member 120 moves in the main connecting pipe 111 towards the staple seat opening mechanism 200, the sliding member 120 will drive the support member two 140 to move, and the support member two 140 will drive the support member one 130 to expand radially in the main connecting pipe 111. When the pull rope device moves along the main connecting pipe 111 towards the staple seat opening mechanism 200, the pull rope device 150 will drive the crossbar pull rope 160 to move and drive the crossbar 170 to rotate around the end of the support member one 130, so that the crossbar 170 expands to form a polygonal staple seat.

[0033] The opening mechanism 200 of the anastomosis seat comprises an opening mechanism body 201, an opening mechanism connecting member 202, a sleeve 204, a puncture needle 203 and other components. The opening mechanism connecting member 202 is a hollow octahedral column and is fixedly connected with the opening mechanism body 201, and has a function of being connected with the anastomosis seat 100. The sleeve 204 is coaxial with the opening mechanism connecting member 202 and is sleeved outside the opening mechanism connecting member 202. The puncture needle 203 is coaxially installed in the opening mechanism connecting member 202. The opening mechanism body 201 is composed of some manual or electric mechanisms, can be designed into a handle shape and has some manual levers, manual knobs or electric buttons. The axial movement of the sleeve and the puncture needle relative to the opening mechanism connecting member can be realized by operating these mechanisms.

[0034] The anastomosis firing mechanism 300 comprises a firing mechanism body 301, a firing mechanism front pipe 302, a firing mechanism connecting member 303, a nail cartridge 304, a circular cutter 305 and other components. The firing mechanism body 301 is composed of some electric or manual components, can be designed into a handle shape and has some manual levers, manual knobs or electric buttons. The firing mechanism front pipe is a circular or polygonal hollow column and is fixedly connected with the firing mechanism body. The firing mechanism connecting member 303 is an octahedral column with a puncture cone head, is coaxially installed in the firing mechanism front pipe 302 and can be connected with the anastomosis seat 100. Under the operation of the firing mechanism body 301, the firing mechanism connecting member 303 can be axially displaced relative to the firing mechanism front pipe 302, so that the main connecting pipe 111 of the anastomosis seat 100 connected with the firing mechanism connecting member 303 can be moved into the firing mechanism front pipe 302 and fixed. The nail cartridge 304 is composed of anastomosis nails and anastomosis nail pushers. Under the operation of the mechanism in the firing mechanism body 301, the anastomosis nails can be pushed out of the nail cartridge by the anastomosis nail pushers, abut against the anastomosis seat 100 and complete the anastomosis of tissues. The circular cutter 305 is composed of polygonal blades. Under the operation of the mechanism in the firing mechanism body 301, the circular cutter 305 can be coaxially and oppositely displaced relative to the firing mechanism connecting member 303, reaches the anastomosis seat 100 and completes the cutting of tissues to form a passage between cavities.

[0035] The main connecting pipe assembly 110 comprises a main connecting pipe 111, a main connecting positioner 113 and a main connecting position pin 112. The main connecting positioner 113 is a polygonal column in shape, and the inner hole is composed of a polygonal shape and a circular shape. Two main connecting positioner 113 pin holes are formed in the wall and are coaxially fixedly installed in the main connecting pipe 111. The main connecting position pin 112 is located in the main connecting positioner 113 pin hole, and the position of the main connecting positioner 113 pin hole corresponds to the U-shaped groove of the main connecting pipe 111.

[0036] The inner hole of one end of the main connecting pipe 111 inserted into the sliding member is circular, and the inner hole of the connecting end connected with the opening mechanism or the firing mechanism is polygonal. The polygonal inner hole is fixedly matched with the main connecting positioner 113 and slidably matched with the pull rope device 150. The circular hole section is provided with the sliding member positioning groove 116 for supporting rod unfolding positioning. The side surface of the polygonal hole section is provided with two U-shaped grooves 114, forming two cantilever beam elastic pieces. The polygonal hole section is also provided with two positioning pin holes for positioning the pull rope device 150. The circular outer wall of the main connecting pipe 111 is provided with an organ wall positioning groove 115 formed by a necked section, so that the penetrated organ cavity wall is relatively stable at the necked position.

[0037] The front end of the sliding member 120 is a hollow conical body, which can form a puncture body with the puncture needle 203, facilitating penetration of the organ cavity wall. The rear end is a hollow cylinder, which is provided with two U-shaped grooves 116, forming two cantilever beams along the axis direction of the cylinder. The end of the cantilever beam is provided with an inner boss 123 and an outer boss 124.

[0038] When the sliding member 120 is installed into the main connecting pipe 111, the outer boss 124 of the cantilever beam is extruded by the inner hole wall of the main connecting pipe 111, and the cantilever beam enters the inside of the sliding member 120. The inner boss 123 makes the inner hole pass through a smaller diameter, which is smaller than the step of the puncture needle. When the puncture needle is pulled back, the step of the puncture needle will move the sliding member until the sliding member reaches the sliding member positioning groove 116 of the main connecting pipe 111. The outer boss of the cantilever beam enters the groove, the cantilever beam rebounds, the sliding member passes through the larger inner diameter, the puncture needle passes through the sliding member, and continues to move. At this time, the relative position of the sliding member and the main connecting pipe 111 is fixed, and the sliding member no longer moves with the puncture needle. The supporting rod system is unfolded to the position and fixed.

[0039] The pull rope device 150 includes a sliding block 151, a spring piece 152 and a positioning pin 153. The sliding block 151 is a multi-faced cylinder, which can slide along the axis direction in the polygonal inner hole section of the main connecting pipe 111. The spring piece 152 is installed in the groove of the sliding block. The positioning pin 153 is installed in the side hole of the sliding block and can move along the axis direction of the side hole.

[0040] The front end of the puncture needle 203 is a cone, the rear end is connected with the nail seat opening mechanism 200, and the middle part has a step, which can pass through the opening mechanism connector 202, the main connector tube 111 and the sliding member 120 to move axially. When the puncture needle penetrates the organ cavity wall and the retractable nail seat enters the cavity, under the operation of the nail seat opening mechanism 200, the puncture needle moves towards the opening mechanism body, which drives the sliding member to move, expands the support member two, and expands the support member one. When the sliding member moves to the sliding member positioning groove of the main connector tube 111, the U-shaped groove cantilever beam of the sliding member is opened, the relative position of the sliding member and the main connector tube 111 is fixed, the support member one and the support member two are fully expanded and fixed. The puncture needle continues to move and contact the pull rope device through the sliding member, drives the pull rope to move, and the pull rope drives the horizontal rod to rotate around the end of the support member one, so that the horizontal rod is expanded. When the pull rope device moves to the positioning pin hole of the main connector tube 111, the positioning pin in the pull rope device enters the positioning pin hole of the main connector under the push of the spring sheet, and the relative position of the pull rope device and the main connector tube 111 is fixed. The horizontal rod is fully expanded to form a polygonal nail seat in the organ cavity. The positioning pin of the pull rope device enters the positioning pin hole of the main connector tube 111, the diameter of the hole is increased, the step of the puncture needle can pass through, and the puncture needle is withdrawn from the retractable nail seat under the operation of the opening mechanism.

[0041] The sleeve 204 is a thin-walled cylindrical structure coaxial with the opening mechanism connector 202, one end of which is connected with the opening mechanism body 201 and can move axially along the opening mechanism connector 202 under the operation of the nail seat opening mechanism 200. When the implantation mechanism assembly is formed to implement the organ cavity wall puncture, the sleeve moves to the conical head joint of the sliding member to form a smooth transition with the conical head, so as to ensure that the complex internal geometry of the retractable nail seat will not cause damage to the punctured organ tissue during the puncture process, and ensure that the puncture is smoothly performed. The sleeve will retreat to the U-shaped groove position of the main connector tube 111 before the subsequent retractable nail seat expansion process, so as to prevent the cantilever beam elastic sheet from moving outward, thereby ensuring the reliable connection between the opening mechanism connector of the nail seat opening mechanism 200 and the main connector tube 111 assembly of the retractable nail seat.

[0042] Workflow:

[0043] When the need to complete the deployment of the nail seat, first, the connection of the implant mechanism assembly on the nail seat 100 in the retracted state, in the retracted state of the nail seat 100 through the minimally invasive artificial hole, puncture through the organ cavity wall, the retractable nail seat 100 into a organ cavity to be connected, then operate the nail seat opening mechanism 200, make the opening mechanism under the drive of manual or electric mechanism, sleeve 204 to the opening mechanism body direction movement, back through the main connecting pipe on the organ wall positioning slot 115, then operate the puncture needle 203 movement, sliding member movement, make support two expand, and drive support one to expand, when the sliding member moves to the sliding member positioning slot of the main connecting pipe 111, the U-shaped groove cantilever beam of the sliding member opens, the relative position of the sliding member and the main connecting pipe 111 is fixed, support one and support two are fully expanded and fixed; the puncture needle passes through the sliding member, continues to move the contact rope device, drives the rope to move, the rope drives the horizontal rod to rotate around the end of the support one, so that the horizontal rod expands; when the rope device moves to the positioning pin hole of the main connecting pipe 111, the positioning pin in the rope device enters the positioning pin hole of the main connector under the push of the spring piece, the relative position of the rope device and the main connecting pipe 111 is fixed, the horizontal rod is fully expanded, and a polygonal nail seat is formed in the organ cavity; the rope device enters the positioning pin hole of the main connecting pipe 111, the diameter of the hole is increased, the step of the puncture needle can pass through, and the puncture needle is withdrawn from the retractable nail seat under the operation of the opening mechanism;

[0044] When anastomosed with another organ, first make the anastomosis firing mechanism 300 penetrate the wall of another biological organ cavity and connect with the expanded nail seat to form an anastomosis device assembly, and then operate some manual rod systems, manual knobs or electric buttons of the firing mechanism to make the firing mechanism connector axially displace relative to the front pipe of the firing mechanism, so that the main connecting pipe of the nail seat connected with the firing mechanism moves into the front pipe of the firing mechanism and is fixed; under the operation of the mechanism in the body of the firing mechanism, the anastomosis nails are pushed out of the nail cartridge by the anastomosis nail pusher, and abut against the nail seat, completing the anastomosis of the tissue; under the operation of the mechanism in the body of the firing mechanism, the circular knife makes coaxial and opposite displacement relative to the firing mechanism connector, reaches the nail seat, completes the tissue cutting, forms a passage between the cavities, and further completes the functions of nailing anastomosis, excess tissue resection, cavity passage reconstruction and the like in the organism.

[0045] The above embodiments are only the preferred schemes of the present application, and do not limit the present application in any form, and other variants and modifications can be made without exceeding the technical scheme recorded in the claims.

Claims

1. A tubular anastomat with retractable staple seat, characterized in that, The application relates to a retractable nail seat (100), a nail seat opening mechanism (200) and an anastomosis firing mechanism (300); the retractable nail seat (100) is connected with the nail seat opening mechanism (200) to form a nail seat (100) implanting mechanism assembly in a biological organ cavity; The implanting mechanism assembly can make the retractable nail seat (100) pass through a minimally invasive artificial hole, puncture through an organ cavity wall and enter an organ cavity to be connected, and then the nail seat opening mechanism (200) is operated to make the retractable nail seat (100) completely expand in the cavity. The anastomosis firing mechanism (300) has the functions of penetrating a biological organ cavity wall and connecting with the expanded retractable nail seat (100) to form an anastomosis device assembly, and completes the operations of nailing and anastomosing between cavities, removing excess tissues and reconstructing cavity channels in a biological body. The retractable nail seat comprises a main connecting pipe assembly (110), a sliding piece (120), a plurality of support pieces one (130), a plurality of support pieces two (140), a plurality of cross bars (170), a plurality of cross bar pull ropes (160) and a pull rope device (150); the main connecting pipe assembly (110) comprises a main connecting pipe (111), and the sliding piece (120) is slidably inserted into the main connecting pipe (111); one end of the support piece one (130) is hinged to the main connecting pipe (111), the other end of the support piece one (130) is hinged to the cross bar (170), the cross bar (170) is connected with the cross bar pull rope (160), the cross bar pull rope (160) passes through a pull rope hole in the main connecting pipe (111) and is connected with the pull rope device (150), the pull rope device (150) is located in the main connecting pipe (111) and can move axially along the main connecting pipe (111); one end of the support piece two (140) is hinged to the support piece one (130), and the other end is hinged to the sliding piece (120).

2. The tubular anastomat with retractable staple seat of claim 1 wherein, The nail seat opening mechanism (200) comprises an opening mechanism main body (201), an opening mechanism connecting piece (202), a puncture needle (203) and a sleeve (204); the opening mechanism connecting piece (202) is a hollow octahedral column and is fixedly connected with the opening mechanism main body, has the function of being connected with the retractable nail seat (100); the sleeve (204) is coaxial with the opening mechanism connecting piece (202) and is sleeved outside the opening mechanism connecting piece (202); the puncture needle (203) is coaxially installed in the opening mechanism connecting piece (202); the opening mechanism main body (201) is composed of some manual or electric mechanisms, can be designed into a handle shape and has a manual rod system, a manual knob or an electric button, and axial movement of the sleeve (204) and the puncture needle (203) relative to the opening mechanism connecting piece (202) can be realized by operating the mechanisms.

3. The tubular anastomat with retractable staple support according to claim 1, wherein, The anastomosis firing mechanism (300) comprises a firing mechanism body (301), a firing mechanism front tube (302), a firing mechanism connecting piece (303), a nail cartridge (304), and a circular knife (305); the firing mechanism front tube (302) is a circular or polygonal hollow cylinder and is fixedly connected with the firing mechanism body (301); the firing mechanism connecting piece (303) is an octahedral cylinder with a puncture cone head, is coaxially installed in the firing mechanism front tube (302), and can be connected with the nail abutment (100); the anastomosis firing mechanism body (301) is composed of an electric or manual part, under the operation of the anastomosis firing mechanism body (301), the firing mechanism connecting piece (303) can be axially displaced relative to the firing mechanism front tube (302), so that the nail abutment (100) connected with the anastomosis firing mechanism (300) is moved into the firing mechanism front tube (302) and is fixed; the nail cartridge (304) is composed of anastomosis nails and anastomosis nail pushers, under the operation of the mechanism in the firing mechanism body (301), the anastomosis nails can be pushed out of the nail cartridge (304) by the anastomosis nail pushers, abut against the nail abutment (100), and complete tissue anastomosis; the circular knife (305) is composed of a polygonal blade, under the operation of the mechanism in the firing mechanism body (301), the circular knife (305) can be coaxially and oppositely displaced relative to the firing mechanism connecting piece (303), reaches the nail abutment (100), completes tissue cutting, and forms a passage between cavities.

4. The tubular anastomat with retractable staple deck of claim 1 wherein the main body is comprised of a plurality of segments. The connecting tube assembly comprises a main connecting positioner (113) and a main connecting position pin (112); the main connecting positioner is a polygonal cylinder, the inner hole is composed of a polygonal shape and a circular shape, two main connecting positioner (113) pin holes are formed in the wall, and the main connecting positioner is coaxially fixedly installed in the main connecting tube (111); the main connecting position pin is located in the main connecting positioner (113) pin hole, and the position of the main connecting positioner (113) pin hole corresponds to the main connecting tube U-shaped groove (114).

5. The tubular anastomat with retractable staple deck of claim 4 wherein the main body is formed of a material that is transparent to x-rays. The inner hole of the connecting tube (111) at one end inserted into the sliding piece (120) is circular, a support rod unfolding sliding piece positioning groove (116) is formed in the circular hole section; the inner hole of the one end connected with the opening mechanism (200) or the firing mechanism (300) is polygonal, the polygonal inner hole is fixedly matched with the main connecting positioner (113) and is slidingly matched with the pull rope device (150); the circular outer wall of the main connecting tube (111) has an organ wall positioning groove (115) formed by a section of neck; two U-shaped grooves (114) are formed in the side wall, forming two cantilever beam elastic elements.

6. The tubular anastomat with retractable staple bed of claim 1 wherein, The front end of the sliding piece (120) is a hollow conical body (121) which can form a puncture body with the puncture needle (203), and the rear end is a hollow cylindrical body (122) which has two U-shaped grooves formed on the cylindrical body, forming two cantilever beams along the axial direction of the cylindrical body, and the end of the cantilever beam is provided with an inner boss (123) and an outer boss (124).

7. The tubular anastomat with retractable staple support according to claim 1 wherein, The pull rope device (150) comprises a sliding block (151), a spring sheet (152) and a positioning pin (153); the sliding block (151) can slide along the axial direction in the main connecting pipe (111); the spring sheet (152) is installed in the groove of the sliding block (151); and the positioning pin (153) is installed in the side hole of the sliding block (151) and can move along the side hole axial direction in the side hole.

8. The tubular anastomat with retractable staple support according to claim 2, wherein, The front end of the puncture needle (203) is a conical body, the rear end is connected with the nail seat opening mechanism (200), and the middle part has a step, which can pass through the opening mechanism connector (202), the main connecting pipe (111) and the sliding block (120) and axially move.

9. The tubular anastomat with retractable staple support according to claim 2, wherein, The sleeve (204) is a thin-walled cylindrical structure coaxial with the opening mechanism connector (202), one end of which is connected with the opening mechanism main body (201) and can axially move along the opening mechanism connector (202) under the operation of the nail seat opening mechanism (200).

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