The chamber mirror surgical cutting anastomat that has the nail anvil on-off structure
Technical field
This utility model relates to a kind of outer sharp Endo-GIA of chamber mirror that has the nail anvil on-off structure, belongs to medical instruments field.
Background technology
In the mirror surgical operation of chamber, chamber mirror surgical cutting anastomat is normally used for cutting anastomosis operations such as esophagus in the digestive tract, stomach, duodenum, small intestinal, colon, rectum, vermiform appendix, gallbladder, pancreas and spleen, also be used to cutting such as lung and trachea anastomosis operation in the respiratory tract, also be used to cutting such as bladder and uterus anastomosis operation in the genitourinary system, can reduce operating time, improve the operation quality.
Existing chamber mirror surgical cutting anastomat has the various chambeies mirror surgical cutting anastomat of introducing in United States Patent (USP) 20080308602,20090206124 and 20090206137.When using chamber mirror surgical cutting anastomat, be that the puncture needle of 12mm to 13mm enters the human intracavity by internal diameter earlier with Executive Head, controlling axial rotation of Executive Head and/or joint again rotates so that aim at identical tissue to be cut, can operate clamping device, promote slide bar, identical tissue holder to be cut is held between the nail anvil and nail bin of Executive Head.Operate firing lock then, promote slide bar again: the two ends of the nail anvil and the nail bin of Executive Head are inserted at the two ends of slide bar respectively, make to reach required grip thickness between nail anvil and the nail bin; Slide bar promotes the ejector pin piece by the ejector pin slide plate, anastomosis staple is released in the nail bin penetrate clamped to be cut identical tissue and direct reach anastomosis staple grooving on the nail anvil, makes the U-shaped anastomosis staple bend to B shape, reaches the operation purpose of will tissue coincideing; The clamped to be cut identical tissue of cutter cutting on the slide bar reaches the operation purpose with the tissue cutting.After finishing the identical operation of cutting, the operation clamping device unclamps and cuts the tissue that coincide, so that withdraw from chamber mirror surgical cutting anastomat.The clamping device and the firing lock of chamber mirror surgical cutting anastomat also can adopt other operating mechanism.Operating mechanism can also have indicating mechanism.Various operating mechanisms such as the clamping device of chamber mirror surgical cutting anastomat and firing lock can be the manual chamber mirror surgical cutting anastomats as United States Patent (USP) 20080308602 and 20090206137, also can be the electronic chamber mirror surgical cutting anastomat as United States Patent (USP) 20090090763 and 20090095790, can also be the fluid-operated chamber mirror surgical cutting anastomat as United States Patent (USP) 20070125826 and 20080029577.
Existing chamber mirror surgical cutting anastomat, its ingredient comprises: the operating mechanism of the extension of anastomat body, Executive Head, the described anastomat body of connection and Executive Head, the action of control Executive Head.Executive Head is formed by carrying out frame, balladeur train, nail bin and nail anvil.On the execution frame, slide bar, nail bin and nail anvil are installed.Nail anvil can rotate relative to described nail bin, and nail bin is made up of cartridge housing, ejector pin piece, ejector pin slide plate and anastomosis staple.Nail groove, ejector pin hole and push broach groove are arranged in the cartridge housing.Anastomosis staple is installed in the nail groove.The ejector pin piece is installed in the ejector pin hole.The ejector pin piece can move in the ejector pin hole so that anastomosis staple is released in the nail groove.The ejector pin slide plate relies on the inclined-plane to promote the ejector pin piece and anastomosis staple is released in the nail groove when mobile in the ejector pin hole.Anastomosis staple takes the shape of the letter U, and is made up of two nail lower limbs, a nail beam and two nail points.One end of nail lower limb is connected with the nail beam respectively, the other end is respectively the nail point.Anastomosis staple can adopt stainless steel silk, tantalum wire, titanium silk or other to have the tinsel manufacturing of similar performance.Two nail lower limbs of anastomosis staple are inserted in the nail groove.The nail beam of anastomosis staple is sitting on the top of ejector pin piece.Have on the end face of nail anvil the anastomosis staple grooving corresponding with the anastomosis staple position in the nail bin and with nail bin in push broach groove position corresponding cutting groove.The nail groove of cartridge housing and ejector pin hole are arranged in the both sides of push broach groove.The anastomosis staple grooving respective row of nail anvil is listed in the both sides of the cutting groove of nail anvil.The anastomosis staple grooving of nail anvil and the nail groove of nail bin and ejector pin hole can be arranged in two rows, three rows, four rows, five rows, six rows, seven row or eight rows altogether according to surgical operation to cutting identical needs.Cutter are arranged on the slide bar, can in the cutting groove of the push broach groove of nail bin and nail anvil, move.
When using chamber mirror surgical cutting anastomat, nail anvil and nail bin clamping that need be by Executive Head, clamp and unclamp identical tissue to be cut, so that finish the operation purpose of coincideing tissue and cutting and organizing.As the chamber mirror surgical cutting anastomat of being introduced in the United States Patent (USP) 20090206137, the near-end of its nail anvil has stair-stepping structure and keeps nail anvil to open the spring of trend.When slide bar was positioned at the stepped place of nail anvil near-end, slide bar and nail anvil disengaged, and nail anvil relative nail bin under the effect of spring is held open state.When slide bar when nail anvil near-end stepped moves to straight place, the projection that the projection of slide bar one end is pressed in the straight place of nail anvil, the other end is pressed on the bottom of carrying out frame, makes nail anvil turn to relative nail bin and is closure state, so that clamping identical tissue to be cut.Then, slide bar continues to move to far-end from the proximal end of cartridge housing, make identical being organized in to be cut reach required grip thickness between nail anvil and the nail bin, simultaneously, slide bar promotes the ejector pin slide plate and moves in the push broach groove of cartridge housing, and the ejector pin slide plate relies on the inclined-plane to promote the ejector pin piece and anastomosis staple released in the nail groove when mobile in the ejector pin hole; Anastomosis staple is pushed out in the nail bin and penetrates clamped to be cut identical tissue and direct reach anastomosis staple grooving on the nail anvil, makes the U-shaped anastomosis staple bend to B shape, reaches the operation purpose of will tissue coincideing; The clamped to be cut identical tissue of cutter cutting on the slide bar reaches the operation purpose with the tissue cutting.Finish cutting and coincide after the operation, slide bar moves to the proximal end from the far-end of carrying out frame, drives the relative nail bin of nail anvil and enters opening from closure state, unclamps and cutting the tissue that coincide, so that withdraw from chamber mirror surgical cutting anastomat.When using chamber mirror surgical cutting anastomat, need repeatedly the people to make the relative nail bin closure or openness of nail anvil, so that accurate clamping identical tissue to be cut.The dissatisfied place of making us of the chamber mirror surgical cutting anastomat of this style is, the edge of nail anvil and carry out between the joint portion of frame and have the gap, and when nail anvil opened and closed, this gap may press from both sides the identical organ-tissue of non-cutting around the scratch evil Executive Head.Another of the chamber mirror surgical cutting anastomat of this style makes us dissatisfied place and is, when slide bar is positioned at the stepped place of nail anvil near-end, slide bar and nail anvil disengage, nail anvil rotates under the effect of spring and enters opening, since this moment unborn under spring action slide bar and the force-closed pop-off between the nail anvil, therefore the nail anvil bounce of the identical organ-tissue of Executive Head non-cutting on every side can occur to injure, and this nail anvil bounce also influences the accurate adjusting that nail anvil is opened and closed angle.Therefore chamber mirror surgical cutting anastomat also needs further to improve.
By above-mentioned obviously as can be seen, designed now not chamber mirror surgical cutting anastomat in specie, and the development work of new chamber mirror surgical cutting anastomat is still continuing, so that the chamber mirror surgical cutting anastomat that uses in a large number in the world every year is done further to improve, makes when using more convenient, more accurate, safer.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of chamber mirror surgical cutting anastomat that has the nail anvil on-off structure is provided, appearance can injure the bounce of the identical organ-tissue of Executive Head non-cutting on every side when it can prevent the nail anvil rotation, prevented that the edge of nail anvil near-end from pressing from both sides the identical organ-tissue of scratch evil Executive Head non-cutting on every side in opening-closing process.
The technical scheme that realizes above-mentioned purpose is: a kind of chamber mirror surgical cutting anastomat that has the nail anvil on-off structure, comprise the anastomat body, Executive Head, the extension that connects anastomat body and Executive Head, the operating mechanism of control Executive Head action, Executive Head is by carrying out frame and being installed in the slide bar of carrying out on the frame, nail bin and nail anvil are formed, carry out the execution frame chute that has on the frame from the proximal extension to the far-end, nail anvil has the nail anvil chute from the proximal extension to the far-end, the nail anvil chute is curved at near-end, be straight shape at other positions, carry out the frame chute and be straight shape, the two ends up and down of described slide bar have upper protruding block and lower protruding block respectively, institute's upper protruding block is inserted in the nail anvil chute, lower protruding block is inserted in to be carried out in the frame chute, in the proximal end of described nail anvil spring is installed; When described slide bar is positioned at the proximal end of described execution frame, the upper protruding block of slide bar upper end is pressed on the arc chute of described nail anvil near-end, the lower protruding block of slide bar lower end is pressed in to be carried out on the frame chute, make the described relatively nail bin of nail anvil be opening, the projection at described spring and slide bar two ends makes the relative nail bin of nail anvil be stabilized in opening; When slide bar begins when far-end moves from the proximal end of carrying out frame, the upper protruding block of slide bar upper end is being carried out on the frame chute at lower protruding block mobile on the arc chute of nail anvil near-end, the lower end and is being moved, drive nail anvil and rotate reducing the opening angle of the relative nail bin of nail anvil, the projection at spring and slide bar two ends is stabilized under the state of opening angle of minimizing the relative nail bin of nail anvil; When slide bar continues when far-end moves from the proximal end of carrying out frame, the upper protruding block of slide bar upper end moves to the straight shape chute place of nail anvil, the lower protruding block of lower end is pressed on the execution frame chute, the drive nail anvil turns to relative nail bin and is closure state, makes to reach required grip thickness between nail anvil and the nail bin; When slide bar from the far-end of carrying out frame when move the proximal end, drive the relative nail bin of nail anvil and enter opening from closure state, the projection at spring and slide bar two ends makes the relative nail bin of nail anvil be stabilized in opening.
After adopting technique scheme, in the process of the relative nail bin closure or openness of nail anvil, can reach the accurate adjusting that nail anvil is opened and closed angle, thereby appearance can injure the bounce of the identical organ-tissue of Executive Head non-cutting on every side when preventing the nail anvil rotation, prevents that the edge of nail anvil near-end from pressing from both sides the technique effect of the identical organ-tissue of scratch evil Executive Head non-cutting on every side in opening-closing process.This utility model is in the surgery cutting operation, and is more convenient when manipulating, more accurate, safer.
Description of drawings
Fig. 1 is the axonometric chart of the joint of the chamber mirror surgical cutting anastomat that has the nail anvil on-off structure of expression this utility model embodiment when opening between nail bin and the nail anvil when not rotating;
Fig. 2 is the axonometric chart of the joint of the chamber mirror surgical cutting anastomat of presentation graphs 1 when opening between nail bin and the nail anvil when rotating;
Fig. 3 is that anastomat body, extension, joint and the operating mechanism of the chamber mirror surgical cutting anastomat of presentation graphs 1 is removed the amplification stereogram that opens the place between back nail bin of Executive Head and the nail anvil;
Fig. 4 is that anastomat body, extension, joint and the operating mechanism of the chamber mirror surgical cutting anastomat of presentation graphs 1 is removed the amplification stereogram when opening between back nail bin of Executive Head and the nail anvil;
Fig. 5 is that the elasticity neck ring of expression Executive Head is removed the amplification stereogram when opening between back nail bin and the nail anvil;
Fig. 6 is that anastomat body, extension, joint and the operating mechanism of the chamber mirror surgical cutting anastomat of presentation graphs 1 is removed the amplification stereogram when closed between back nail bin of Executive Head and the nail anvil;
Fig. 7 is that the elasticity neck ring of expression Executive Head is removed the amplification stereogram when closed between back nail bin and the nail anvil;
Fig. 8 is the amplification stereogram at the back side of Executive Head of the chamber mirror surgical cutting anastomat of presentation graphs 1;
Fig. 9 is the amplification stereogram after the nail bin of the chamber mirror surgical cutting anastomat of presentation graphs 1 is removed;
Figure 10 is the amplification stereogram after the end cover of nail bin of the chamber mirror surgical cutting anastomat of presentation graphs 1 is removed;
Figure 11 is the amplification stereogram of the cartridge housing of expression Figure 10;
Figure 12 is the interior amplification stereogram of slide bar before promoting cutter, ejector pin piece, ejector pin slide plate and anastomosis staple of the Executive Head of presentation graphs 1;
Figure 13 is the amplification stereogram of slide bar when promoting cutter, ejector pin piece, ejector pin slide plate and anastomosis staple in the Executive Head of presentation graphs 1;
Figure 14 is the amplification stereogram of the nail anvil of presentation graphs 1;
Figure 15 is the amplification stereogram of the execution frame of presentation graphs 1;
Figure 16 is the amplification stereogram of the another kind of nail anvil of presentation graphs 1.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is described in further detail.
As depicted in figs. 1 and 2, chamber mirror surgical cutting anastomat 1 is made up of Executive Head 2, joint 3, extension 4, anastomat body 5 and operating mechanism 6.Operating mechanism 6 is positioned at anastomat body 5 places, through 2 actions of extension 4 inner chambers control Executive Head.Executive Head 2, joint 3, extension 4, anastomat body 5 order successively link to each other.To shown in Figure 13, Executive Head 2 is formed by carrying out frame 7, slide bar 8, nail bin 9 and nail anvil 10 as Fig. 4.Carrying out installation slide bar 8, nail bin 9 and nail anvil 10 on the frame 7.Nail bin 9 is made up of cartridge housing 11, ejector pin piece 12, ejector pin slide plate 13 and anastomosis staple 14.Nail groove 15, ejector pin hole 16, skateboards slot 17 and push broach groove 18 are arranged in the cartridge housing 11.Anastomosis staple 14 is installed in the nail groove 15.Ejector pin piece 12 is installed in the ejector pin hole 16.Ejector pin slide plate 13 is installed in the skateboards slot 17.The nail groove 15 of cartridge housing 11 and ejector pin hole 16 are arranged in the both sides of push broach groove 18 and respectively arrange three rows.Have on the end face of nail anvil 10 the anastomosis staple grooving 19 corresponding with anastomosis staple 14 positions in the nail bin 9 and with cartridge housing 11 in push broach groove 18 position corresponding cutting grooves 20.Three rows are respectively arranged in the both sides of the corresponding cutting groove 20 at nail anvil 10 of the anastomosis staple grooving 19 of nail anvil 10.Nail anvil 10 is pivotally connected with execution frame 7.
As Figure 10, Figure 12 and shown in Figure 13, in the push broach groove 18 of cartridge housing 11 cutter 21 are installed.When slide bar 8 from the proximal end of cartridge housing 11 when far-end moves, slide bar 8 promotes cutter 21 and ejector pin slide plate 13 is mobile the push broach groove 18 of cartridge housing 11 in.Ejector pin slide plate 13 rely on inclined-planes promote ejector pin pieces 12 ejector pin hole 16 in when mobile with anastomosis staple 14 release in the nail groove 15.
As Fig. 1 to Fig. 4, Fig. 6 and shown in Figure 8, the periphery of carrying out the near-end of frame 7 is enclosed with elasticity neck ring 22, and the remote edge 23 of elasticity neck ring 22 is close to the proximal edge 24 of nail anvil 10.When nail anvil 10 turns to relative nail bin 9 when being opening, strains take place in elasticity neck ring 22 under the compressing of nail anvil 10, and the remote edge 23 of elasticity neck ring 22 keeps being close to the proximal edge 24 of nail anvil 10.When nail anvil 10 turns to relative nail bin 9 when being closure state, the remote edge 23 of elasticity neck ring 22 recovers to be close to the state of the proximal edge 24 of nail anvil 10.
As Fig. 3, Fig. 8, Figure 12 to shown in Figure 15, carry out the execution frame chute 25 that has on the frame 7 from the proximal extension to the far-end, the nail anvil chute 26 from the proximal extension to the far-end is arranged on the nail anvil 10, nail anvil chute 26 is curved at near-end, be straight shape at other positions, carry out frame chute 25 and be straight shape.There is upper protruding block 29 upper end of slide bar 8, and there is lower protruding block 30 lower end.Upper protruding block 29 and lower protruding block 30 insert nail anvil chute 26 respectively and carry out in the frame chute 25.When slide bar 8 is positioned at the proximal end of carrying out frame 7, the lower protruding block 30 that the upper protruding block 29 of slide bar 8 upper ends is pressed in the arc chute upper and lower end of nail anvil 10 near-ends is pressed on the execution frame chute 25, make nail anvil 10 relative nail bins 9 be opening, strain takes place in elasticity neck ring 22 under the compressing of nail anvil 10, the remote edge 23 of elasticity neck ring 22 keeps being close to the proximal edge 24 of nail anvil 10, and upper protruding block 29, the lower protruding block 30 at elasticity neck ring 22 and slide bar 8 two ends makes nail anvil 10 relative nail bins 9 be stabilized in opening.When slide bar 8 begins when far-end moves from the proximal end of carrying out frame 7, the upper protruding block 29 of slide bar 8 upper ends moves on the chute 25 of execution frame 7 at lower protruding block 30 mobile on the arc chute of nail anvil 10 near-ends, the lower end, driving nail anvil 10 rotates to reduce the opening angle of relative nail bin 9, strain takes place in elasticity neck ring 22 under the compressing of nail anvil 10, the remote edge 23 of elasticity neck ring 22 keeps being close to the proximal edge 24 of nail anvil 10, and the upper protruding block 29 at elasticity neck ring 22 and slide bar 8 two ends and times 30 is stabilized under the state of opening angle of minimizing nail anvil 10 relative nail bins 9.When slide bar 8 continues when far-end moves from the proximal end of carrying out frame 7, the upper protruding block 29 of slide bar 8 upper ends moves to the straight shape chute place of nail anvil 10, the lower protruding block 30 of lower end is pressed in to be carried out on the frame chute 25, drive nail anvil 10 turns to relative nail bin 9 and is closure state, make between nail anvil 10 and the nail bin 9 to reach required grip thickness, the state of the proximal edge 24 of nail anvil 10 is close in remote edge 23 recoveries of elasticity neck ring 22.When slide bar 8 from the far-end of carrying out frame 7 when move the proximal end, drive the relative nail bin of nail anvil 10 9 and enter opening from closure state, the remote edge 23 of elasticity neck ring 22 remains the state of the proximal edge 24 of being close to nail anvil 10.
At the near-end of carrying out frame 7 projection 31 is arranged.Elasticity neck ring 22 is at the near-end of nail anvil 10 and carry out between the projection 31 of frame 7.The proximal edge 32 of elasticity neck ring 22 is close to the proximal edge 33 of the projection 31 of carrying out frame 7.Shown in Fig. 1,2,4,8, between extension 4 and the Executive Head 2 joint 3 is installed, joint 3, the near-end of carrying out frame 7 and the far-end periphery of extension 4 are enclosed with elasticity neck ring 22, and the remote edge 23 of elasticity neck ring 22 is close to the proximal edge 24 of nail anvil 10.
As shown in figure 16, the another kind of embodiment for nail anvil of the present utility model is equipped with spring 34 in the proximal end of nail anvil 10, and spring 34 1 ends contact with the proximal end of nail anvil 10, and the other end contacts with the proximal end of carrying out frame 7.Spring 34 opens and closes the similar of effect and elasticity neck ring 22 in the aforementioned embodiment when rotating at nail anvil 10 relative to nail bin 9.
Compare with existing various chambeies mirror surgical cutting anastomat, the chamber mirror surgical cutting anastomat that has the nail anvil on-off structure of the present utility model turns to relative nail bin 9 at nail anvil 10 and is in the process of opening or closure state, on the one hand, the remote edge 23 of elasticity neck ring 22 remains the proximal edge 24 that is close to nail anvil 10, can reach the proximal edge 24 that prevents nail anvil 10 is pressed from both sides the identical organ-tissue of scratch evil Executive Head 2 non-cuttings on every side in opening-closing process technique effect; On the other hand, elasticity neck ring 22 has form force-closed effect when nail anvil 10 rotates, both can reach the technique effect that appearance when preventing that nail anvil 10 from rotating can injure the bounce of the organ-tissue that non-cuttings coincide around the Executive Head 2, can reach the technique effect that nail anvil is opened and closed the accurate adjusting of angle again; In addition, adopt elasticity neck ring 22 can substitute the spring part that acts in the Executive Head of existing chamber mirror surgical cutting anastomat on the nail anvil, can reach the processing and the difficulty of assembling and the technique effect of product cost that reduce each part in the Executive Head of elongate body that diameter is 12mm to 13mm.
What need supplementary notes is: term herein " near-end " is meant the end of chamber mirror surgical cutting anastomat near the operator, and term " far-end " is meant the end of chamber mirror surgical cutting anastomat away from the operator.