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A cold and hot snare

A snare and snare technology, which is applied in the field of medical devices, can solve the problems that the electric snare cannot meet the requirements and the histological examination is hindered, so as to achieve the effect of shortening the operation time, reducing the risk of burn patients, and reducing bleeding

Active Publication Date: 2016-01-20
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The histological examination of resected polyps is hindered by tissue cauterization, and one of the basic principles of polypectomy is to completely remove polyps to provide adequate histological examination. When targeting small polyps (≤9mm), electric snares The device cannot meet the requirements

Method used

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  • A cold and hot snare
  • A cold and hot snare
  • A cold and hot snare

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] The meanings of the reference signs in this embodiment are as follows: 1: Ferrule; 2: Cable; 3: Outer sheath tube; 4: Sheath tube; 5: Conductive plug 6: Positioning cap; 7: Limiting block; 8: Bracelet; 9 core rod.

[0020] Such as figure 1 , figure 2 ,as well as image 3 As shown, this embodiment discloses a snare integrated with heating and cooling, including a diamond-shaped snare 1, a cable 2 connected to the snare, a bracelet 8 connected to the cable, the bracelet 8 is fixed on the core rod 9, and the bracelet 8 The front end is provided with a limit block 7, and the end of the core rod 9 close to the snare is provided with a positioning cap 6. The positioning cap 6 is provided with a conductive plug 5 electrically connected to the cable. The snare 1 is braided by two sharp metal wires. The wire is coated with a layer of color used to measure polyp size. An outer sheath tube 3 is arranged on the outside of the zipper. The side of the positioning cap facing the...

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Abstract

The invention discloses a snare integrating cold and heat. The snare comprises a snare body, a pull cable connected with the snare body and a hand ring connected with the pull cable. The hand ring is fixed on a core rod. A limiting block is arranged at one end, close to the snare body, of the hand ring. A locating cap is arranged at the front end of the core rod. An electric conduction plug electrically connected with the pull cable is arranged on the locating cap. The snare body is made of sharp metal wires in a weaving mode. The metal wires are coated with a color layer used for measuring the size of polyp. The snare can be used for polyp resection operation directly without energization. Compared with a traditional electric snare, the snare greatly reduces operation time and reduces the risks of bleeding in an operation or post-operation delay bleeding.

Description

technical field [0001] The invention relates to a medical device, in particular to a cold and heat integrated snare capable of performing endoscopic mucosal resection (EMR) with and without power at the same time. Background technique [0002] Endoscopic mucosal resection (EMR) refers to the injection of drugs into the submucosa of lesions (such as sessile polyps, flat or shallow depressed polyps, leiomyomas, early cancers of the esophagus, stomach, and colon, etc.) to form a liquid cushion A technical method for cutting large pieces of mucosal tissue. The advantage is that the lesion can be removed under the endoscope without surgery. [0003] The traditional electric snare to remove polyps is often accompanied by the risk of perforation, intraoperative and postoperative bleeding and burns to the patient. For patients on anticoagulant therapy, it is often necessary to stop taking anticoagulant drugs before EMR surgery. The histological examination of resected polyps is h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/22
CPCA61B18/12A61B2018/00107A61B2018/1405
Inventor 胡兵汤小伟沈宁刘伟牟一易航曾弘泽王啓名曾启山王水芳吴春城张琼英
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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