CN201719301U

CN201719301U - Anastomosis instrument for minimally invasive surgery

Info

Publication number: CN201719301U
Application number: CN201020221879XU
Authority: CN
Inventors: 陈望东; 孙克展
Original assignee: Touchstone International Medical Science Co Ltd
Current assignee: Touchstone International Medical Science Co Ltd
Priority date: 2010-06-10
Filing date: 2010-06-10
Publication date: 2011-01-26
Anticipated expiration: 2020-06-10

Abstract

The utility model relates to an anastomosis instrument for minimally invasive surgery, which comprises a body and a work head at the front end of the body. The work head comprises a nail anvil fixing rod fixed to the body and the front end of the nail anvil fixing rod is provided with the nail anvil the surface of which is provided with a nail molded groove. A nail cabin and a trigger piece are pivoted to the nail anvil. The nail cabin is located between the trigger piece and the nail anvil, and provided with at least a group of nails. The trigger piece pushes the stepping mobile nails out of the nail cabin in order. The main advantage of the anastomosis instrument for minimally invasive surgery is that the work head can reach the body of patient for minimally invasive anastomosis and is suitable for stitching the wounded tissues with complicated shapes, solving the defect that the existing anastomosis instrument for minimally invasive surgery has single function.

Description

Anastomat for minimally invasive surgery

Technical field

This utility model relates to a kind of anastomat for minimally invasive surgery, belongs to medical instruments field.

Background technology

Surgical operation develops into now, has more and more tended to Minimally Invasive Surgery.Generalized saying, the operation that can reduce wound all is called Minimally Invasive Surgery, and everybody operation of getting used to carrying out under endoscope now is Minimally Invasive Surgery.The operation of under endoscope, carrying out, need open several very little holes for general on patient's health, the doctor is facing to the computer display screen operation, and Minimally Invasive Surgery is little to the wound that patient brings, patient can get well in a short period of time, so more and more become operating developing direction.

Anastomat for minimally invasive surgery is the apparatus a kind of commonly used in the Minimally Invasive Surgery apparatus, is used for suture tissue wound under endoscope.Present anastomat for minimally invasive surgery has an elongated head, has 4～6 row's nail left and right symmetricallies to be distributed in elongated head, thereby forms 4～6 nail lines; The anastomat for minimally invasive surgery that has also has a cutting knife to be positioned at the middle part of nail line, and when nail passed tissue, cutter passed whole elongate head from the near to the remote at nail line middle part, when tissue wounds is sewn, remaining tissue is excised.It is longer that this apparatus generally is used for wound length, and the straight line opening that is shaped as comparison rule of wound, not too is fit to the tissue wounds of shape more complicated.

The utility model content

The purpose of this utility model is to solve above-mentioned technical problem, and the coinciding machine that provides a kind of suitable Minimally Invasive Surgery to use is used to sew up the complicated tissue wounds of shape.

The purpose of this utility model is achieved through the following technical solutions:

A kind of anastomat for minimally invasive surgery comprises that body and is located at the working head of body front end, and described working head comprises the nail anvil fixed bar affixed with described body, and the front end of described nail anvil fixed bar is provided with nail anvil, and the surface of described nail anvil is provided with the nail forming tank; Be connected with nail bin and percussion sheet with described nail anvil pivot, described nail bin is between percussion sheet and nail anvil; Be provided with at least one group of nail in the described nail bin, the nail that described percussion sheet moves stepping is released nail bin successively.

Further, described nail is arranged in the nail group along the nail bin axis, and be arranged in the groove of nail bin inside, what the nail foot of first nail of described nail group was aimed at described nail bin goes out to follow closely the hole, last of described nail group nails on butt has one to press the nail piece, the opposite side butt of described pressure nail piece has one to press the langrage spring, and the other end of described pressure langrage spring is against on the inwall of described nail bin.Described nail bin go out to follow closely the nail forming tank that described nail anvil is aimed in the hole.

The opposite side with respect to the nail foot of first nail of described nail group is provided with a pushing slice of nail, and the opposite side of described pushing slice of nail is connected to described percussion sheet and is used to make described percussion sheet driving pushing slice of nail to move.

The opposite side of described pushing slice of nail is provided with boss, and described boss is connected to described percussion sheet, has at least one pushing slice of nail spring to be located between described boss and the nail bin.

Be provided with torsion spring between described nail bin and the nail anvil.

Again further, be provided with two nail groups in the described nail bin, described two nail groups are along being crisscross arranged perpendicular to the nail bin axis.

Again further, be socketed with a sleeve on the described nail anvil fixed bar, described sleeve can move along the axis of described nail anvil fixed bar, when described percussion sheet is switched to when parallel with described nail anvil, the outermost of described percussion sheet is equal to or slightly less than described telescopic internal diameter to the outermost distance of described nail anvil.

Further, described sleeve is provided with the contraction flow region of a toroidal at the end near described nail anvil.Described sleeve is fixedlyed connected with a sleeve push rod at the end away from described nail anvil, drives described sleeve by described sleeve push rod and moves back and forth along the axis of described nail anvil fixed bar.

The beneficial effects of the utility model are mainly reflected in: working head of the present utility model can be deep into and carry out invasive in the patient body and coincide, applicable to sewing up the complicated tissue wounds of shape, solved the single weak point of function of use of present anastomat for minimally invasive surgery.

Description of drawings

Below in conjunction with accompanying drawing technical solutions of the utility model are described further:

Fig. 1: the schematic perspective view of the front end working head of this utility model preferred embodiment.

Fig. 2: the cutaway view of the front end working head of this utility model preferred embodiment.

Fig. 3: the exploded perspective view of the front end working head of this utility model preferred embodiment.

Wherein:

11 nail anvil fixed bars, 12 nail anvils, 13 nail forming tank

14 convex shoulders, 21 nail bins, 22 grooves

23 convex shoulders 24 go out to follow closely hole 3 nails

4 press nail piece 5 to press langrage spring 61 pushing slice of nail

62 boss, 63 pushing slice of nail springs, 71 percussion sheets

72 percussion sections, 73 pivot sections, 74 through holes

81 sleeves, 82 contraction flow regions, 83 sleeve push rods

The specific embodiment

This utility model has disclosed a kind of anastomat for minimally invasive surgery, comprise that body and is located at the working head of body front end, as shown in Figure 1 to Figure 3, described working head comprises the nail anvil fixed bar 11 affixed with described body (not shown), and the front end of described nail anvil fixed bar 11 is provided with nail anvil 12.In this preferred embodiment, described nail anvil 12 roughly become one rectangular-shaped, its surface is provided with nail forming tank 13, and is provided with the convex shoulder 14 of band circular hole near an end of nail anvil fixed bar 11.

Be connected with nail bin 21 and percussion sheet 71 with described nail anvil 12 pivots, described nail bin 21 is between percussion sheet 71 and nail anvil 12.

Specifically with reference to Fig. 2, one end of described nail bin is provided with the convex shoulder 23 of band circular hole, with and inner be provided with one around the groove 22 of sealing, be provided with two groups of nails 3 in the groove, described nail is arranged in the nail group along the nail bin axis, these two nail groups are along being crisscross arranged perpendicular to the nail bin axis, promptly in two nail groups separately first nail certain displacement is arranged on the nail bin axis direction.

What the nail foot of first nail of two groups of nail groups was all aimed at described nail bin 21 goes out to follow closely hole 24, last of described nail group nails on butt has one to press nail piece 4, the opposite side butt of described pressure nail piece 4 has one to press langrage spring 5, and the other end of described pressure langrage spring 5 is against on the inwall of described nail bin 21.The nail forming tank 13 that goes out to follow closely the described nail anvil of hole 24 alignings of described nail bin 21.Described nail bin 21 go out to follow closely the middle part that the bottom surface of described nail bin 21 roughly is located in hole 24.

The opposite side with respect to the nail foot of first nail of two groups of nail groups respectively is provided with a pushing slice of nail 61, the opposite side of described pushing slice of nail 61 is provided with boss 62, described boss 62 is connected to described percussion sheet 71, respectively has two pushing slice of nail springs 63 to be located between described boss 62 and the nail bin 21.

Described percussion sheet 71 comprises a percussion section 72 and at an angle pivot section 73 with it, and the boss 62 of described pushing slice of nail 61 is connected on the percussion section 72 of described percussion sheet 71, and an end of described pivot section 73 is provided with a through hole 74.Convex shoulder 23 and the pin-and-hole between the convex shoulder 14 on the nail anvil 12 by described through hole 74, band circular hole connect, and described nail bin 21, percussion sheet 71 all can rotate with respect to described nail anvil 12 pivots.In the present embodiment, also be provided with the torsion spring (not shown) between described nail bin and the nail anvil.

Again further, be socketed with a sleeve 81 on the described nail anvil fixed bar 11, described sleeve 81 can move along the axis of described nail anvil fixed bar 11, when described percussion sheet 71 is switched to when parallel with described nail anvil 12, the outermost of described percussion sheet 71 equals the internal diameter of described sleeve 81 to the outermost distance of described nail anvil 12.

Described sleeve 81 is provided with the contraction flow region 82 of a toroidal at the end near described nail anvil 12.Described sleeve 81 is fixedlyed connected with a sleeve push rod 83 at the end away from described nail anvil 12, is moved back and forth by the axis of the described sleeve 81 of described sleeve push rod 83 drives along described nail anvil fixed bar 11.

Simply introduce the operating process of this preferred embodiment below.

During use, at first the nail anvil 12 and the nail bin 21 of working head are aimed at tissue.Then, sleeve push rod 83 promotes sleeve 81 and advances, and sleeve 81 compressing nail bins 21 and nail anvil 12 close up grasping tissue; Continue to promote sleeve 81 and advances, percussion sheet 71 can drive pushing slice of nail 61 and move then first nail 3 of nail group is released nail bins 21, and this moment, nail 3 molding organizationally reached identical effect under the mating reaction of nail anvil 12.In this example, apparatus is pulled the trigger two interlaced nails at every turn.

Drive sleeve push rod 83 retreats sleeve 81 then, and under the effect of pushing slice of nail spring 63, percussion sheet 71 pivotally opens, and pushing slice of nail 61 retreats; And under the effect of torsion spring, nail bin 21 also pivotally opens; And the nail group moves under the effect of pressing langrage spring 5, makes the nail that is positioned at the second position originally advance to primary importance, and what make that its nail foot aims at nail bin 21 goes out to follow closely hole 24, similar existing stapler principle.

After ready, move percussion again by the apparatus afterbody, moving can be any direction, come according to the position that will sew up and shape, each distance that moves also can be certain, will guarantee that promptly the nail of per twice percussion is all interlaced, to guarantee that tissue is by effectively closed.The afterbody of apparatus is connected on the reference platform by precision gear or accurate cylinder, with the accuracy that guarantees to move.

The nail that the percussion sheet moves stepping in this utility model is released nail bin successively, therefore user can be regulated the rare close degree of nail and the route that nail coincide arbitrarily, reach and sew up the purpose of complicated tissue wounds of shape, solved the single weak point of function of use of present anastomat for minimally invasive surgery.

This utility model still has multiple concrete embodiment, and all employings are equal to replacement or equivalent transformation and all technical schemes of forming, all drop within the claimed scope of this utility model.

Claims

1. An anastomotic instrument for minimally invasive surgery, comprising a body and a working head located at the front end of the body, characterized in that: the working head includes an anvil fixing rod affixed to the body, and the anvil fixing rod The front end of the nail anvil is provided with a nail forming groove on the surface of the nail anvil; a nail bin and a firing piece are pivotally connected with the nail anvil, and the nail bin is located between the firing piece and the nail anvil; At least one set of staples is arranged in the staple cartridge, and the firing piece pushes the step-moving staples out of the staple cartridge in sequence.

2. The anastomotic instrument for minimally invasive surgery according to claim 1, characterized in that: the nails are arranged into nail groups along the axis of the nail bin, and are arranged in grooves inside the nail bin, the first of the nail groups The nail foot of the nail is aligned with the nail exit hole of the nail bin, the last nail of the nail group abuts a nail pressing block, and the other side of the nail pressing block abuts a nail pressing spring, and the pressing nail block abuts against a nail pressing spring. The other end of the staple spring is against the inner wall of the staple cartridge.

3. The anastomotic instrument for minimally invasive surgery according to claim 2, characterized in that: the nail outlet hole of the staple cartridge is aligned with the nail forming groove of the nail anvil.

4. The anastomotic instrument for minimally invasive surgery according to claim 2, characterized in that: the other side of the first nail of the nail group relative to the nail feet is provided with a nail pushing piece, and the nail pushing piece The other side abuts against the firing piece to make the firing piece drive the nail pushing piece to move.

5. The anastomotic instrument for minimally invasive surgery according to claim 4, wherein a boss is provided on the other side of the nail pushing piece, and the boss abuts against the firing piece, and there is at least one pushing piece. The staple leaf spring is arranged between the boss and the staple cartridge.

6. The anastomotic instrument for minimally invasive surgery according to claim 1, wherein a torsion spring is provided between the staple cartridge and the anvil.

7. The anastomotic instrument for minimally invasive surgery according to any one of claims 2 to 6, characterized in that: two nail groups are arranged in the nail cartridge, and the two nail groups are staggered along the axis perpendicular to the nail cartridge set up.

8. The anastomotic instrument for minimally invasive surgery according to claim 7, wherein a sleeve is sleeved on the anvil fixing rod, and the sleeve can move along the axis of the anvil fixing rod, When the firing piece is pivoted to be parallel to the anvil, the distance from the outermost side of the firing piece to the outermost side of the anvil is equal to or smaller than the inner diameter of the sleeve.

9. The anastomotic instrument for minimally invasive surgery according to claim 8, characterized in that: the sleeve is provided with a bell-shaped constriction at one end close to the anvil.

10. The anastomotic instrument for minimally invasive surgery according to claim 9, characterized in that: the sleeve is fixedly connected to a sleeve push rod at an end away from the anvil, and the sleeve push rod drives the The sleeve moves back and forth along the axis of the anvil fixing rod.