CN204814172U

CN204814172U - Medical snare

Info

Publication number: CN204814172U
Application number: CN201520616218.XU
Authority: CN
Inventors: 彭卫东; 俞万钧; 王华英; 应华娟; 顾霄
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-08-15
Filing date: 2015-08-15
Publication date: 2015-12-02
Anticipated expiration: 2025-08-15

Abstract

The utility model discloses a medical snare, it is fixed including handle (1) that has sleeve pipe (2), rear end and handle (1) of sleeve pipe (2), and sleeve pipe (2) interior sliding fit has soft metal silk (3), and the one end and high frequency current plug (4) the electricity of soft metal silk (3) are connected, and the other end stretches out the front end of sleeve pipe (2), and just form and tighten up ring (5), be equipped with on handle (1) and be used for driving soft metal silk (3) actuating mechanism (6) along the endwise slip of sleeve pipe (2), its characterized in that: it including at least three -strand wire (5.1), form closed loop geometric figure (5.2) between two strands arbitrary wire (5.1), and the axis of overall wire (5.1) is not in the coplanar to tighten up ring (5). The utility model provides a be convenient for polyp excision in the human pipe, and carry over polypous medical snare out of in polyp excision postamble.

Description

Medical snare

Technical field

This utility model belongs to medical instruments field, specifically a kind of medical snare.

Background technology

Electricity snare is the conventional medical apparatus and instruments carrying out polypectomy under endoscopic surgery, the basic system of existing snare is pipe handle, elastic metallic yarn, high frequency electric plug, the front end of elastic metallic yarn forms ring, the sleeve pipe of pipe handle is passed in the rear end of elastic metallic yarn, and be electrically connected with the high frequency electric plug on pipe handle, described pipe handle is also provided with the drive mechanism driving elastic metallic yarn along the axially reciprocating of sleeve pipe, thus the ring realizing elastic metallic yarn front end is subject to sleeve pipe constraint and tightens up or the expansion that resets.

Its operation principle is, first the front end of the sleeve pipe being built-in with elastic metallic yarn is stretched to the focal area of patient, tightening up and expanding of the front end ring of elastic metallic yarn is ordered about again by the relative sliding of sleeve pipe and elastic metallic yarn, namely ring expansion is placed on polyp, then ring is tightened up, make ring banding polyp, finally elastic metallic yarn is communicated with the excision that high frequency electric realizes polyp.

But existing snare to be placed on polyp in this process at ring, there is following problem, 1 for the polyp in human body pipe, such as tracheal strips polyp, sleeve pipe can only drive ring moving axially and circumference rotation along trachea, cannot radially move, and ring is for being placed on the polyp of inner surface of trachea, then exactly need a radial forces, this just makes, and existing snare is more difficult is applied to endotracheal polypectomy hands art, doctor can only be relied in prior art constantly to stir sleeve pipe along the axial and circumferential of trachea, at a time the ring that just makes of small probability is placed on polyp just, obviously the randomness of this operation is too large, not only increase the difficulty of operation, and operation is consuming time long, after 2 high frequency electric excision polyps, above-mentioned polyp can drop, need to take out by other equipment, this is not only and operating procedure is increased, growth consuming time, and the polyp dropped is more difficult finds, this just further increases again the duration of operation.And consuming time longer in operation process, operating procedure is more, difficulty is larger, and the risk that its operation exists is also larger, be not easy after 3 excessive polyps or tumor tissues snare cut to take out, take out easily midway slippage organizational process with foreign body forceps from tracheal strips, cause airway obstruction, abnormally dangerous.

Summary of the invention

Technical problem to be solved in the utility model is: provide a kind of polypectomy be convenient in human body pipe, and Timing Belt goes out the medical snare of polyp after polypectomy.

Technical solution adopted in the utility model is: provide a kind of medical snare, it comprises the hands handle with sleeve pipe, rear end and the handle of sleeve pipe are fixed, soft metal silk is sliding combined with in sleeve pipe, one end of soft metal silk is electrically connected with the high frequency electric plug be located on handle, the other end of soft metal silk stretches out the front end of sleeve pipe, and formation tightening ring, described handle is provided with for driving soft metal silk sliding axially along sleeve pipe, thus make the driving mechanism that tightening ring is expanded or tightened up, described tightening ring comprises at least three strands of wires, closed loop geometric figure is formed between any two strands of wires, and the axis of whole wires is not in same plane.

Described tightening ring comprises three strands of wires.A closed loop geometric figure for snare polyp can be formed by any two strands of wires in three strands of wires, and remaining 3rd strand of wire and inside pipe wall are when leaning, the closed loop geometric figure that above-mentioned two strands of wires are formed can be compressed towards polyp side, namely, provide a radial force, be therefore convenient to tightening ring and be placed on polyp.

The front end of three strands of wires is intersected on an intersection point, and described intersection point is positioned on the extended line of casing axis, and three strands of wires are uniformly distributed along the circumference of casing axis place straight line.

Described intersection point is provided with an electric knife head.When tightening ring collapses to extreme position, all conducting is gathered in a branch of, and the electric knife head that its end is arranged can use as high frequency electric knife.

After adopting above structure, medical snare of the present utility model compared with prior art has the following advantages: any two strands of wires in tightening ring can form a closed loop geometric figure, and all the other wires and inner surface of trachea lean, thus react on the closed loop geometric figure corresponding to polyp, closed loop geometric figure is made to be pressed on polyp, namely provide a closed loop geometric figure and be placed on radial force on polyp, make snare once can effectively be placed on the polyp of inner surface of trachea, reduce operating difficulty and consuming time.In addition, owing to there being three strands of wires, therefore can being cut into two fritters during the excision of polyp or tissue in operation, there will not be the polyp or tissue blockage air flue that scale off, can take out with foreign body forceps or allow patient cough out voluntarily.The snare of these three strands of wires can use as foreign body basket in operation, takes out the polyp or tissue that scale off.

Accompanying drawing explanation

Fig. 1 is the structural representation of medical snare of the present utility model.

Fig. 2 is the close-up schematic view in " A " region in Fig. 1.

Wherein, 1, handle, 1.1, chute, 2, sleeve pipe, 3, soft metal silk, 4, high frequency electric plug, 5, tightening ring, 5.1, wire, 5.2, closed loop geometric figure, 6, driving mechanism, 6.1, slide block, 6.2, fingerstall, 7, electric knife head.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

As shown in the figure, this utility model provides a kind of medical snare, it comprises the handle 1 with sleeve pipe 2, rear end and the handle 1 of sleeve pipe 2 are fixed, soft metal silk 3 is sliding combined with in sleeve pipe 2, one end of soft metal silk 3 is electrically connected with the high frequency electric plug 4 be located on handle 1, the other end of soft metal silk 3 stretches out the front end of sleeve pipe 2, and form tightening ring 5, described handle 1 is provided with for driving soft metal silk 3 sliding axially along sleeve pipe 2, thus the driving mechanism 6 tightening ring 5 being expanded or tightens up, described tightening ring 5 comprises at least three strands of wires 5.1, closed loop geometric figure 5.2 is formed between any two strands of wires 5.1, and the axis of whole wires 5.1 is not in same plane.

Described tightening ring 5 comprises three strands of wires 5.1.

Adjacent seal wire is 120 ° along the angle on the cross section of sleeve pipe 2 axis.

The front end of three strands of wires 5.1 is intersected on an intersection point, and described intersection point is positioned on the extended line of sleeve pipe 2 axis, and three strands of wires 5.1 are uniformly distributed along the circumference of sleeve pipe 2 axis place straight line.

Described intersection point is provided with an electric knife head 7.

Above-mentioned driving mechanism 6 can be as shown in the figure, a slide block 6.1, and slide block 6.1 is provided with fingerstall 6.2, and one end of soft metal silk 3 and slide block 6.1 are fixed, and handle 1 is provided with and slides chute 1.1 for slide block 6.1.

Above-mentioned driving mechanism 6 can also be a capstan winch, one end of soft metal silk 3 is fixed on capstan winch, and be wound on capstan winch with the rotation of capstan winch, the lateral wall of capstan winch is provided with fluted disc, described handle comprises driving lever and follower lever, driving lever and follower lever hinged, and driving lever and follower lever are provided with the tooth bar engaged with the both sides of fluted disc separately, when the grip force of staff acts on handle, order about driving lever and follower lever relatively rotates, be with the capstan winch on fixed handle to rotate thus, thus drive soft metal silk 3 to move vertically.

Certainly, the driving of routine of the prior art or drive mechanism all can be applied in this utility model, slide axially relative to sleeve pipe 2 as long as it realizes soft metal silk 3, sleeve pipe 2 can be made even to move, and soft metal silk 3 are motionless.These all can improve on basis of the present utility model.

For endotracheal polypectomy operation, its operation principle is, first the sleeve pipe with soft metal silk 3 is extend into the polyp position of trachea, and the tightening ring of soft metal silk 3 front end is collapsed to minimum volume, thus be convenient to tightening ring and stretch to gap location between polyp and inner surface of trachea, then tightening ring is expanded, formed between two strands of wires corresponding to polyp closed loop geometric figure aim at polyp and remaining wire in tightening ring process of expansion with inner surface of trachea against, thus order about closed loop geometric figure and be subject to radial reaction force and be pressed on polyp, subsequently draw tightening ring in, make its banding polyp, last wire is communicated with high frequency electric, excision polyp.

Be described with regard to this utility model preferred embodiment above, but can not be interpreted as it is limitations on claims.This utility model is not only confined to above embodiment, and its concrete structure allows to change, and all various changes done in the protection domain of this utility model demand for independence are all in protection domain of the present utility model.

Claims

1. a medical snare, it comprises the handle (1) with sleeve pipe (2), the rear end of sleeve pipe (2) and handle (1) are fixed, soft metal silk (3) is sliding combined with in sleeve pipe (2), one end of soft metal silk (3) is electrically connected with the high frequency electric plug (4) be located on handle (1), the other end of soft metal silk (3) stretches out the front end of sleeve pipe (2), and form tightening ring (5), described handle (1) is provided with for driving soft metal silk (3) sliding axially along sleeve pipe (2), thus the driving mechanism (6) tightening ring (5) being expanded or tightens up, it is characterized in that: described tightening ring (5) comprises at least three strands of wires (5.1), closed loop geometric figure (5.2) is formed between any two bursts of wires (5.1), and the axis of whole wire (5.1) is not in same plane.

2. medical snare according to claim 1, is characterized in that: described tightening ring (5) comprises three bursts of wires (5.1).

3. medical snare according to claim 2, it is characterized in that: the front end of three bursts of wires (5.1) is intersected on an intersection point, described intersection point is positioned on the extended line of sleeve pipe (2) axis, and three bursts of wires (5.1) are uniformly distributed along the circumference of sleeve pipe (2) axis place straight line.

4. medical snare according to claim 3, is characterized in that: described intersection point is provided with an electric knife head (7).