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Apparatus for deploying a cutting element during an endoscopic mucosal resection

A technology for cutting elements and components, applied in the direction of endoscopic cutting instruments, endoscopes, dissection instruments, etc., can solve problems such as difficulty in penetrating muscles, danger, etc.

Inactive Publication Date: 2007-10-31
ETHICON ENDO SURGERY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technique has several drawbacks, including regarding the difficulty of removing the entire suspicious area and the danger of penetrating the muscle during cutting

Method used

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  • Apparatus for deploying a cutting element during an endoscopic mucosal resection
  • Apparatus for deploying a cutting element during an endoscopic mucosal resection
  • Apparatus for deploying a cutting element during an endoscopic mucosal resection

Examples

Experimental program
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Embodiment Construction

[0067] Referring to FIGS. 1-4 , a first aspect of an improved EMR device, generally designated 100 , can include an ablation / actuation assembly 102 disposed on a distal end 104 of an elongated shaft 106 . Assembly 102 and shaft 106 may be sized and shaped to pass through a natural orifice (not shown) in the body. The shaft 106 described above may be flexible and may have a length sufficient to pass through the human gastrointestinal tract during endoscopic procedures.

[0068] Assembly 102 may include head 108 , first movable arm 110 , second movable arm 112 , linkage assembly 114 , and actuation link or cable 116 . The linkage assembly 114 described above may include four pivotally connected links 126 and may be disposed within the head 108 . An actuation cord 116 can extend through the elongated shaft 106 so that it can be used by a user.

[0069] The linkage assembly 114 can include a distal end 118 and a proximal end 120, wherein the distal end 118 can be connected to th...

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PUM

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Abstract

A deployable cutting element assembly (300) including an electrically insulated shaft (306) defining an internal channel (304) extending at least partially therethrough, the shaft including a distal portion and a proximal portion, and an electrically conductive wire (302) including a proximal portion (312) extending through the internal channel and a distal portion (308) disposed external of the internal channel, wherein the distal portion of the wire is fixedly connected to the distal portion of the shaft such that the distal portion of the wire forms a cutting tip (316) when the wire is advanced in a distal direction through the internal channel.

Description

technical field [0001] The present application relates to medical devices and methods, and more particularly to medical devices and methods for performing resection procedures within the gastrointestinal tract and esophagus of a human body. Background technique [0002] Gastric cancer in humans usually arises from precursor lesions and polyps that develop into superficial tumors and other hyperplasia. Such lesions and proliferations typically begin in the mucosal layers of the gastrointestinal tract (eg, colonic mucosa) and can spread into the submucosa and beyond as the cancer progresses. Some physicians therefore believe that successful cancer treatment and prevention often requires identification and removal of suspicious tissue from the gastrointestinal tract. [0003] Therefore, doctors collect and test samples of tissue from the gastrointestinal tract (for example, a sample of mucous membranes) to see if cancer cells are present. Such tissue sampling may be purely pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/04A61B17/3209A61B17/94A61B1/012
CPCA61B2018/1475A61B2018/00482A61B2017/2945A61B2018/1432A61B2017/00269A61B2018/00642A61B17/320016A61B17/1604A61B17/1608A61B18/1445A61B2018/144A61B2018/1253
Inventor R·H·诺比斯I·卢
Owner ETHICON ENDO SURGERY INC