CN218979176U

CN218979176U - Bipolar snare

Info

Publication number: CN218979176U
Application number: CN202222249866.9U
Authority: CN
Inventors: 陈立庚
Original assignee: Jiashan County Chinese Medicine Hospital
Current assignee: Jiashan County Chinese Medicine Hospital
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-05-09
Anticipated expiration: 2032-08-26

Abstract

The utility model provides a bipolar snare, includes the core bar, the peripheral cover of core bar establishes a sliding ring that sets up along its axis slip, the one end fixed outer tube that links to each other of core bar, the inside of outer tube forms the cavity of intercommunication with the inside of core bar, the cavity is equipped with the cable of reciprocating motion along its axial, the one end and the sliding ring fixed link to each other of cable, the other end fixed link to each other snare of cable, the fixed anodal electrode that is equipped with in one side of sliding ring, anodal electrode connects the cable, the one end of core bar that is close to snare one side is equipped with the adapter that rotates the setting, the adapter headgear is located the periphery of cable and is fixed with the cable to set up, one side of adapter is fixed to be equipped with the negative electrode, the negative electrode is connected a negative electrode wire that is located the inside of outer tube, the inside of outer tube is equipped with the connecting piece that is used for being connected cable and negative electrode wire electricity, during operating condition, the snare is located the inside of outer tube during unoperated state.

Description

Bipolar snare

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a bipolar snare.

Background

The snare, which is an instrument for ligating a blood vessel, polyp or other canal structure by tightening a sliding knot previously tied with an absorbable or synthetic thread with a nylon rod, is convenient to operate and has been applied to various gastroscopic operations. The snare is classified into a monopolar snare and a bipolar snare, wherein the bipolar snare is a safer and more reliable medical instrument than an electric monopolar snare, which is achieved by contacting tissue and then switching on a high-frequency electric knife, and a high-frequency current is formed between two electrode wires to generate heat, which acts on the contacted tissue to gasify and decompose it, thereby achieving the cutting purpose.

The negative electrode of the bipolar snare in the prior art is arranged in the middle of the core rod, and the following problems exist in the installation of the negative electrode in the middle of the core rod: the installation site designed on the core rod affects the sliding distance of the guy cable, and the length of the core rod needs to be increased to meet the normal operation of the snare, and the increase of the length of the core rod brings inconvenience to the operation.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a bipolar snare with a negative electrode connected with an adapter without increasing the length of a core rod.

The technical scheme adopted by the utility model is that the bipolar snare comprises a core rod, a slip ring which is arranged along the axis of the core rod in a sliding way is sleeved on the periphery of the core rod, one end of the core rod is fixedly connected with an outer tube, a cavity which is communicated with the inside of the core rod is formed inside the outer tube, the cavity is provided with a pull rope which moves in a reciprocating way along the axial direction of the core rod, one end of the pull rope is fixedly connected with the slip ring, the other end of the pull rope is fixedly connected with a snare, one side of the slip ring is fixedly provided with a positive electrode, the positive electrode is connected with the pull rope, one end of the core rod close to one side of the snare is provided with an adapter which is arranged in a rotating way, the adapter is sleeved on the periphery of the pull rope and is fixedly arranged with the pull rope, one side of the adapter is fixedly provided with a negative electrode, the negative electrode is connected with a negative wire which is positioned inside the outer tube, and a connecting piece which is used for electrically connecting the pull rope and the negative wire is arranged inside the outer tube.

One end of the snare is provided with a tip part, and the tip part is provided with a cutter head.

The periphery of the slip ring is symmetrically provided with first handheld parts for placing an index finger and a middle finger, and one end of the core rod is provided with a second handheld part for placing a thumb.

According to the utility model, the core bar is axially provided with a first chute, the inner wall of the slip ring is provided with a second chute corresponding to the first chute, and the core bar and the slip ring are arranged in a sliding manner through the first chute and the second chute.

The other side of the adapter is provided with an interface for injecting physiological saline.

The diameter of the cutter head is 2mm.

The diameter of the opening of the snare is 5cm, and the diameter of the snare is 4mm.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the negative electrode is connected with the adapter, so that the sliding travel of the inhaul cable along the core bar is not influenced, the length of the core bar can be fully utilized, and the length of the core bar is not required to be additionally increased, so that resources are saved.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of the structure of the present utility model in an exploded state.

Fig. 3 is a partial enlarged view at a point of the present utility model.

Detailed Description

The utility model is further illustrated by way of example with reference to the accompanying drawings.

As shown in fig. 1 to 3, a bipolar snare according to this embodiment includes a core rod 1, a slip ring 2 slidably disposed along an axis of the core rod 1 is sleeved on an outer periphery of the core rod 1, one end of the core rod 1 is fixedly connected with an outer tube 3, a cavity communicating with an inside of the core rod 1 is formed in the outer tube 3, the cavity is provided with a pull cable 4 reciprocating along an axial direction of the core rod 4, one end of the pull cable 4 is fixedly connected with the slip ring 2, the other end of the pull cable 4 is fixedly connected with a snare 5, one side of the slip ring 2 is fixedly provided with a positive electrode 21, the positive electrode 21 is connected with the pull cable 4, one end of the core rod 1 adjacent to one side of the snare 5 is provided with an adapter 6 rotatably disposed, the adapter 6 is sleeved on an outer periphery of the pull cable 4 and fixedly disposed with the pull cable 4, one side of the adapter 6 is fixedly disposed with a negative electrode 61, the negative electrode 61 is connected with a negative electrode wire 62 disposed in the outer tube 3, a connecting piece 7 for electrically connecting the pull cable 4 with the negative electrode wire 62 is disposed in the inner portion of the outer tube 3, and in a working state, the snare 5 is disposed in the outer tube 3 when in a non-working state. According to the embodiment, the position of the snare 5 is adjusted by rotating the adapter 6 to drive the snare 5 to rotate, so that the part to be cut is finally snagged, after the cut part is circled by the snare 5, the slip ring 2 is pushed to drive the guy cable 4 to finally drive the snare 5 to reciprocate along the inner part of the outer tube 3, and finally the object is cut; the bipolar electrode, namely the positive electrode and the negative electrode form a loop, and finally the current does not flow through a human body, and the object in the snare 5 is directly cut at high frequency, so that the electric energy-saving snare is safe and reliable; and the negative electrode 61 is connected with the adapter 6, so that the sliding stroke of the inhaul cable 4 along the core bar 1 is not influenced, namely, the inhaul cable 4 can fully utilize the length of the core bar 1, the length of the core bar 1 is not required to be additionally increased, the structure is simple, and the resource is saved.

In this embodiment, one end of the snare 5 has a tip portion, and the tip portion is provided with a cutter head 51; the cutter head 51 is directly peeled off submucosally to diseases such as early tumor of digestive tract.

The periphery of the slip ring 2 is provided with a first handheld part 22 symmetrically arranged for placing an index finger and a middle finger, and one end of the core bar 1 is provided with a second handheld part 11 for placing a thumb; the cutting speed of the snare 5 is controlled by hand.

In this embodiment, the core rod 1 is provided with a first chute along an axial direction thereof, the inner wall of the slip ring 2 is provided with a second chute corresponding to the first chute, and the core rod 1 and the slip ring 2 are slidably arranged through the first chute and the second chute.

The other side of the adapter 6 in this embodiment is provided with an interface 63 for injecting physiological saline. The physiological saline in this embodiment serves to turn on the positive electrode and the negative electrode.

The diameter of the cutter head according to this embodiment is 2mm.

The diameter of the opening of the snare 5 is 5cm in this embodiment, and the diameter of the snare is 4mm.

Claims

1. The utility model provides a bipolar snare, its characterized in that includes core bar (1), the periphery cover of core bar (1) is established one and is followed sliding arrangement's sliding ring (2) of its axis, the one end of core bar (1) is fixed to link to each other an outer tube (3), the inside of outer tube (3) forms the cavity of intercommunication with the inside of core bar (1), the cavity is equipped with cable (4) of reciprocating motion along its axial, the one end and sliding ring (2) of cable (4) are fixed to link to each other, the other end of cable (4) is fixed to link to each other a snare (5), the fixed anodal electrode (21) that is equipped with of one side of sliding ring (2), anodal electrode (21) connect cable (4), the one end of core bar (1) that is close to snare (5) side is equipped with rotation setting adapter (6), adapter (6) cover is located the periphery of cable (4) and is fixed to be set up with cable (4), one side of adapter (6) is fixed to be equipped with negative electrode (61), negative electrode (61) connect a negative electrode (62) that is located inside outer tube (3), when being equipped with cable (4) and being used for stretching out when work state (7) are connected to outer tube (3), the snare (5) is positioned inside the outer tube (3).

2. A bipolar snare according to claim 1, wherein one end of the snare (5) has a tip portion provided with a cutter head (51).

3. A bipolar snare according to claim 1, wherein the periphery of the slip ring (2) is provided with first handholds (22) symmetrically arranged for placement of the index finger and middle finger, and one end of the core (1) is provided with second handholds (11) for placement of the thumb.

4. A bipolar snare according to claim 1, wherein the core rod (1) is provided with a first runner in its axial direction, the inner wall of the slip ring (2) is provided with a second runner corresponding to the first runner, and the core rod (1) and slip ring (2) are slidably arranged through the first runner and the second runner.

5. A bipolar snare according to claim 1, wherein the other side of the adaptor (6) is provided with an interface (63) for injection of saline.

6. A bipolar snare according to claim 2, wherein the diameter of the bit is 2mm.

7. A bipolar snare according to claim 1, wherein the diameter of the opening of the snare (5) is 5cm and the diameter of the snare is 4mm.