CN201481494U

CN201481494U - Rotary snare

Info

Publication number: CN201481494U
Application number: CN2009201931912U
Authority: CN
Inventors: 张融南; 时百明
Original assignee: Anrei Medical HZ Co Ltd
Current assignee: Anrei Medical HZ Co Ltd
Priority date: 2009-08-27
Filing date: 2009-08-27
Publication date: 2010-05-26
Anticipated expiration: 2019-08-27

Abstract

The utility model discloses a rotary snare, which comprise a handle and a conductive filament, wherein the far end of the conductive filament is connected with a snare, the near end of the conductive filament is connected with an electrode arranged on the handle, an insulation pipe is sleeved on the conductive filament, a sliding seat is connected onto the handle in a sliding way, the electrode is arranged on the sliding seat, the electrode and the conductive filament are connected through a metal rod, one end of the metal rod is fixedly connected with the conductive filament, the other end of the metal rod is movably connected with the electrode, and a rotary wheel is sleeved on the metal rod and is arranged on the handle in a rotary way, wherein the rotary wheel is connected circumferentially with the metal rod and is not connected axially with the metal rod, the sliding rod slides on the handle in the axial direction of the metal rod, and the insulation pipe is fixedly connected with the handle. As the technical scheme integrates the rotary part and the handle, the functions of single-hand operation and continuous rotating can be realized, and the utility model has the advantages of simple structure, gentle and reliable running and convenient operation.

Description

A kind of rotary snare

Technical field

This utility model relates to a kind of digestive tract, respiratory tract polyp or tumor of being used for to be reined in and removes or burn equipment, particularly relates to a kind of rotary snare that adopts the high-frequency electrical ligation.

Background technology

Snare needs to adjust the direction of snare in use, so that it can be enclosed within on polyp or the tumor accurately, existing snare structure with spinfunction can be divided into split type and two kinds of integral types on the market.Split-type structural rotating part and handle branch are arranged, and rotating part directly rotates conductive filament, needs bimanualness, not only operation inconvenience, and also product integral body has extended about 300mm; The integral structure rotating part is arranged on the handle, but rotation at every turn can only half-twist, very inconvenience in the practical application.

Summary of the invention

For solving above-mentioned technical problem, the purpose of this utility model provides a kind of snare, and its rotating part and handle integral type can realize one-handed performance, continuous spinfunction, have advantages such as simple in structure, that operation is reliable gently, easy to operate.

For achieving the above object, this utility model has adopted following technical scheme:

A kind of rotary snare, comprise handle and conductive filament, the far-end of described conductive filament is connected with snare, the near-end of conductive filament is connected with electrode on being located at handle, the conductive filament outside is arranged with insulation tube, slidely connect sliding seat on the described handle, described electrode is set on the sliding seat, described electrode is connected by metallic rod with conductive filament, one end and the conductive filament of metallic rod are affixed, the other end and the electrode active of metallic rod are dynamically connected, and are arranged with runner on the described metallic rod, and runner rotates and is arranged on the handle, wherein, the circumferential fixed axis of described runner and metallic rod is not to fixing, and described sliding seat axially slides on handle along metallic rod, and described insulation tube and handle are affixed.

As preferably, above-mentioned metallic rod is connected with electrode with metal connecting tube by the Metal Ball head rod, one end and the metallic rod of metal connecting tube are affixed, and the bulb end of the other end of metal connecting tube and Metal Ball head rod flexibly connects, and the other end and the electrode of Metal Ball head rod are affixed.

As preferably, above-mentioned electrode is threaded with metalwork in being embedded in sliding seat and is connected with the Metal Ball head rod by this metalwork.

As preferably, above-mentioned metallic rod is connected with the runner molding.

Above-mentioned electrode is arranged on the sliding seat by electrode tip holder.

As preferably, above-mentioned conductive filament adopts the sub-thread titanium-nickel wire.

As preferably, be arranged with protective casing outside the above-mentioned insulation tube.

Be equipped with finger ring on above-mentioned handle and the sliding seat.

This utility model is owing to adopted above technical scheme, adopt metallic rod that electrode is connected with the conductive filament conduction, adopt runner to rotate the snare rotation of metallic rod and then rotation conductive filament and conductive filament far-end, can realize one-handed performance, in 360 ° of scopes continuous rotary fine adjustment function, have advantages such as simple in structure, that operation is reliable gently, easy to operate.

Description of drawings

Fig. 1: structural representation of the present utility model (snare exposes);

Fig. 2: structural representation of the present utility model (snare withdrawal);

The I-I cutaway view of Fig. 3: Fig. 2.

Wherein: 1, thumb rings; 2, hands handle; 3, sliding seat; 4, metallic rod; 5, runner; 6, nut; 7, protective casing; 8, insulation tube; 9, snare; 10, metalwork; 11, Metal Ball head rod; 12, metal connecting tube; 13, electrode tip holder; 14, electrode tip holder medicated cap; 15, electrode; 16, conductive filament.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is made a detailed explanation.

Embodiment 1:

As Fig. 1～a kind of rotary snare shown in Figure 3, comprise handle 2 and conductive filament 16, the far-end of described conductive filament 16 is connected with snare 9, the near-end of conductive filament 16 is connected with electrode 15 on being located at handle 2, conductive filament 16 outsides are arranged with insulation tube 8, slidely connect sliding seat 3 on the described handle 2, described electrode 15 is set on the sliding seat 3, described electrode 15 is connected by metallic rod 4 with conductive filament 16, one end and the conductive filament 16 of metallic rod 4 are affixed, the other end of metallic rod 4 and electrode 15 flexibly connect, and are arranged with runner 5 on the described metallic rod 4, and runner 5 rotates and is arranged on the handle 2, wherein, described runner 5 and metallic rod 4 circumferential fixed axis are to fixing, and described sliding seat 3 axially slides on handle 2 along metallic rod 4, and described insulation tube 8 is affixed with handle 2.

In the present embodiment, above-mentioned metallic rod 4 is connected with electrode 15 with metal connecting tube 12 by Metal Ball head rod 11, one end and the metallic rod 4 of metal connecting tube 12 are affixed, the bulb end of the other end of metal connecting tube 12 and Metal Ball head rod 11 flexibly connects, be with the outer end crimping of metal connecting tube 12 after the bulb end of Metal Ball head rod 11 inserts in the metal connecting tube 12, Metal Ball head rod 11 can rotate in metal connecting tube 12 freely like this, and can guarantee to conduct electricity preferably contact when both strain; Described electrode 15 is arranged on the sliding seat 3 by electrode tip holder 13, and sheathed electrode tip holder medicated cap 14 on the electrode tip holder 13, described electrode 15 are threaded with metalwork 10 in being embedded in sliding seat 3 and the other end by this metalwork 10 and Metal Ball head rod 11 compresses affixed; Described metallic rod 4 is a square pole, and runner 5 is provided with the square opening that is complementary with square pole, and both molding connect; Described conductive filament 16 adopts the sub-thread titanium-nickel wire, and torsional strength can have rotate effect preferably well like this; Be equipped with finger ring on described handle 2 and the sliding seat 3.

For fear of in the moving process of metallic rod, damaging insulation tube 8, so be arranged with protective casing 7 in insulation tube 8 outsides, the length that 7 needs of protective casing are provided with on the insulation tube of slightly being longer than the metallic rod moving range gets final product, to guarantee support strength preferably, in the present embodiment, at the near-end bell mouth expanding of insulation tube and protective casing and be fixedly connected on the front end of handle 2 by nut 6; Relative metallic rod, runner 5 should be an axial restraint, thereby in the present embodiment, and runner 5 is to be limited in the rectangle hole slot of handle 2 leading portions, and certainly, runner 5 can also be that other rotate set-up modes; The mode that thumb rings 1 can adopt eye-splice to connect is connected on the handle 2, and the finger ring on the sliding seat 3 can be integrally formed with sliding seat.

When beginning operation, snare is connected with high intensity light source by electrode, by finger ring sliding seat 3 is pulled back, and metallic rod 4 is mobile backward and spur conductive filament 16, makes in the snare 9 retraction insulation tubes 8 of far-end; Pincers road by endoscope is sent into the far-end of snare in the tract, after arriving polyp locations, by finger ring sliding seat 3 is pushed ahead, metallic rod 4 moves forward, it is outer and become round by elastic return own to make that the snare 9 of far-end exposes insulation tube 8 fully, by rotating wheel 5, make snare 9 direction of rotation to make snare 9 entangle polyp or tumor again; Afterwards, by finger ring sliding seat 3 is slowly pulled back, make the snare 9 of far-end take in gradually in the insulation tube 8, its lasso dwindles gradually and logical high-frequency electrical is burnt and reined in except that polyp or tumor.After operation finished, outage pulled away focus with snare.

Claims

1. rotary snare, comprise handle (2) and conductive filament (16), the far-end of described conductive filament (16) is connected with snare (9), the near-end of conductive filament (16) is connected with electrode (15) on being located at handle (2), conductive filament (16) outside is arranged with insulation tube (8), it is characterized in that, slidely connect sliding seat (3) on the described handle (2), described electrode (15) is set on the sliding seat (3), described electrode (15) is connected by metallic rod (4) with conductive filament (16), one end of metallic rod (4) and conductive filament (16) are affixed, the other end of metallic rod (4) and electrode (15) flexibly connect, be arranged with runner (5) on the described metallic rod (4), runner (5) rotates and is arranged on the handle (2), and wherein, the circumferential fixed axis of described runner (5) and metallic rod (4) is to fixing, described sliding seat (3) slides along axially going up at handle (2) of metallic rod (4), and described insulation tube (8) is affixed with handle (2).

2. a kind of rotary snare according to claim 1, it is characterized in that, described metallic rod (4) is connected with electrode (15) with metal connecting tube (12) by Metal Ball head rod (11), one end of metal connecting tube (12) and metallic rod (4) are affixed, the bulb end of the other end of metal connecting tube (12) and Metal Ball head rod (11) flexibly connects, and the other end of Metal Ball head rod (11) and electrode (15) are affixed.

3. a kind of rotary snare according to claim 2 is characterized in that, described electrode (15) metalwork (10) interior with being embedded in sliding seat (3) is threaded and is connected with Metal Ball head rod (11) by this metalwork (10).

4. a kind of rotary snare according to claim 1 is characterized in that, described metallic rod (4) is connected with runner (5) molding.

5. a kind of rotary snare according to claim 1 is characterized in that described electrode (15) is arranged on the sliding seat (3) by electrode tip holder (13).

6. a kind of rotary snare according to claim 1 is characterized in that, described conductive filament (16) adopts the sub-thread titanium-nickel wire.

7. a kind of rotary snare according to claim 1 is characterized in that, described insulation tube (8) outside is arranged with protective casing (7).

8. according to each described a kind of rotary snare in the claim 1 to 7, it is characterized in that, be equipped with finger ring on described handle (2) and the sliding seat (3).