A kind of biopsy forceps with support arm
Technical field
The present invention relates to technical field of medical instruments, and in particular to a kind of biopsy forceps with support arm.
Background technology
Adenomatous polyp is the precancerous lesion of colorectal cancer, for diameter<0.5cm polyp, often adopt under general scope
The mode for taking biopsy forceps to extract, but the wriggling of enteron aisle can often cause the evolution of polyp, and existing biopsy forceps is due to it
The pincers portion of front end does not have supporting construction, and especially when polyp is on the inside of enteron aisle pleat, often difficulty is extractd using biopsy forceps
It is very big, in addition, the visual field of scope is usually blocked by pleat, not only cause biopsy time-consuming longer, sometimes can also be because of the biopsy used time
It is long to cause intestinal cramps, and then cause biopsy to fail.Therefore, urgent need is a carries support arm, can push pleat aside, be easy to seek
Polyp or other enteron aisle lesions are looked for, and the length of support arm can control, and can be adjusted according to the required visual field.So can be big
The big time for reducing biopsy and taking polyp, it can also reduce the difficulty for taking polyp.
The content of the invention
It is an object of the invention to provide a kind of biopsy forceps with support arm, to solve existing existing biopsy forceps work(
Energy is single and runs into the problem of excision difficulty is big when polyp is on the inside of enteron aisle pleat.
To achieve the above object, the present invention provides a kind of biopsy forceps with support arm, the biopsy with support arm
Pincers include clamping device, flexible connecting tube and joystick, and the clamping device includes tubulose mounting seat and two holders,
Two holders intersect and by hinge in the port of described tubulose mounting seat one end, the tubulose mounting seat it is another
One end is connected by flexible connecting tube with the joystick, and one end of two holders is provided with recess, two institutes
The other end for stating holder is connected by the first wire being arranged in flexible connecting tube with the joystick respectively, institute
State and at least two through holes are provided with the outer peripheral face of tubulose mounting seat, be equipped with a support arm in each through hole, every
The connection end of the support arm is connected by the second wire being arranged in flexible connecting tube with the joystick respectively.
Preferably, the joystick includes grips, the first control piece and the second control piece, and the grips is in reducing
Tubular structure, one end of the grips are connected with the other end of the flexible connecting tube, first control piece and second
Control piece is respectively slidably sheathed on the outer peripheral face of the grips, and two bar shapeds are provided with the tube wall of the grips
Hole, first wire and the second wire are connected by bar hole with first control piece and the second control piece respectively.
Preferably, the both ends ora terminalis of first control piece and the second control piece extends radially outwardly to form circle gear respectively
Ring.
Preferably, the other end of the grips is provided with a held in ring.
Preferably, the edge of the recess is provided with multiple sawtooth, and the bottom of the recess is provided with small opening.
Preferably, support arm, the first wire and the second wire are stainless steel steel wire.
Preferably, the connection end of the every support arm is connected by connection sheet with second wire, the company
Contact pin is in a ring or C fonts.
Preferably, the other end of two holders is connected by connector with first wire respectively.
Preferably, the support end of the every support arm is provided with hemispheric supporting part.
Preferably, the through hole equi-spaced apart is distributed on the outer peripheral face of the tubulose mounting seat.
The invention has the advantages that:The biopsy forceps with support arm of the present invention is more by being set in the front end of biopsy forceps
Root support arm, when progress biopsy takes polyp, support arm can be controlled to push pleat aside by joystick and be easy to find polyp, so as to
Greatly reduce the time that biopsy takes polyp, reduce the difficulty for taking polyp.
Brief description of the drawings
Fig. 1 is the side that two holders are in the biopsy forceps with support arm when under open configuration in the embodiment of the present invention 1
Depending on cross-sectional view.
Fig. 2 is the side that two holders are in the biopsy forceps with support arm when under buckling state in the embodiment of the present invention 1
Depending on cross-sectional view.
Fig. 3 is the partial enlargement structural representation at a in Fig. 2.
Fig. 4 is the structural representation of tubulose mounting seat of the present invention.
Fig. 5 is the structural representation of clamping device in the embodiment of the present invention 2.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Embodiment 1
As shown in Fig. 1,3,4, should carry the biopsy forceps of support arm includes clamping device 1, flexible connecting tube 2 and control hand
Handle 3, clamping device 1 include tubulose mounting seat 11 and two holders 12, and the port edge of the one end of tubulose mounting seat 11 is provided with
Two are symmetrically kept away position mouth, keep away position mouth by setting, the angle that can open two holders 12 is bigger, tubulose mounting seat 11
The other end radially-inwardly shrinks to form the plug division that one section of external diameter is less than the flexible internal diameter of connecting tube 2.Two holders 12 intersect
And the port of the one end of tubulose mounting seat 11 is articulated with by bearing pin 20, one end of each holder 12 is provided with recess 13, recess
13 edge is provided with multiple sawtooth 14, and the bottom of recess 13 is provided with small opening 16, and when two holders 12 fasten, two recessed
The sawtooth 14 at the edge of portion 13 is mutually twisted, and one end of two holders 12 forms a hemisphere, so as to facilitate holder 12 from
Tiny space passes through;One end of the other end of two holders 12 and an even connector 19 is hinged by bearing pin 20, connector
19 be in bullion piece, and the other end and the first wire 21 of two connectors 19 are be hinged by bearing pin 20.When pulling the first gold medal
For category silk 21 to when being moved close to the direction of joystick 3, the first wire 21 drives two holders 12 to enclose by connector 19
Rotated around bearing pin 20, two holders 12 finally fasten to mutual;When the first wire 21 of promotion to the side away from joystick 3
To during motion, the first wire 21 drives two holders 12 to be rotated around bearing pin 20 by connector 19, two holders 12
Finally it is flared to maximum opening angle.Flexible connecting tube 2 is wired hose, and the internal layer of flexible connecting tube 2 is one section of spiral
Steel wire, one layer of flexible plastic of outer layer covers, one end of flexible connecting tube 2 is sheathed on plug division.The periphery of tubulose mounting seat 11
Two through holes are symmetrically provided with face, are equipped with a support arm 17 in each through hole, support arm 17 is along tubulose mounting seat 11
Radially outward direction extension and carry certain camber and elasticity, the support end of every support arm 17 is provided with hemispheric support
Portion 10, supporting part 10 can prevent support arm 17 from causing to damage to intestinal walls.The connection end of every support arm 17 passes through connection sheet
18 are connected with the second wire 22, connection sheet 18 in a ring or C fonts, support arm 17, the first wire 21 and the second wire
22 be stainless steel steel wire.
As shown in Fig. 2 joystick 3 is in including grips 31, the first control piece 34 and the second control piece 35, grips 31
Reducing tubular structure, one end of grips 31 are sheathed on the other end of flexible connecting tube 2, along handle on the tube wall of grips 31
The length of gripping member 31 is provided with two bar holes 32, and the first control piece 34 and the second control piece 35 are respectively slidably sheathed on handle
The outer peripheral face of gripping member 31, the first wire 21 are connected by one of bar hole 32 with the first control piece 34, the second wire
22 are connected by another bar hole 32 with the second control piece 35.Further, in order to easy to operate, the He of the first control piece 34
The both ends ora terminalis of second control piece 35 extends radially outwardly to form a circle baffle ring 33 respectively, and the other end of grips 31 is provided with handle
Held in ring 36, in use, need to only pass through thumb held in ring 36, using two fingerholds in the first control piece 34 or the second control
On product 35, the length direction of the first control piece 34 and the second control piece 35 along grips 31 can be easily controlled to slide.Work as control
When making the first control piece 34 to away from the direction of held in ring 36 is slided, two holders 12 open;When the first control piece 34 of control
When being slided to the close direction held in ring 36, two holders 12 fasten.When the second control piece 35 of control is to away from held in ring 36
Direction slide when, two support arms 17 stretch out from the through hole at respective place respectively, and to the radial direction of tubulose mounting seat 11 to
Outer direction is opened, so as to be played a supporting role to pleat;Slided when controlling the second control piece 35 to close to the direction of held in ring 36
When dynamic, the second control piece 35 drives two support arms 17 to be retracted respectively by the through hole at respective place by the second wire 22 can
Bend the inside of connecting tube 2.
Embodiment 2
As shown in figure 5, the biopsy forceps with support arm in the present embodiment and the biopsy with support arm in embodiment 1
The difference of pincers is, four through holes are provided with the outer peripheral face of tubulose mounting seat 11, and four through hole equi-spaced aparts are distributed in
On the outer peripheral face of tubulose mounting seat 11, pleat is supported by the support arm 17 in each through hole, support effect is more preferable.This
Outside, can be in grips 31 in order that the first control piece 34 and the second control piece 35 are more smooth when being slided in grips 31
Amortisseur bar is set on outer peripheral face, increases the resistance between the first control piece 34 and the second control piece 35 and the outer peripheral face of grips 31
Power, so that the more preferably collapsing length of the opening angle of two holders 12 of control and support arm 17.
Although above with general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be modified or improved, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the scope of protection of present invention.