Medical catheter for assisting in endoscopic submucosal dissection

A medical catheter and dissection technology, applied in catheter, surgery, medical science and other directions, can solve the problems of high cost, invasive operation, the direction and strength of pulling the mucosa cannot be adjusted in real time, etc., to improve safety and efficiency, improve effect of vision

Pending Publication Date: 2017-11-21
张强
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have certain limitations
For example, the operation site is limited, the direction and strength of pulling the mucosa cannot be ...

Method used

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  • Medical catheter for assisting in endoscopic submucosal dissection
  • Medical catheter for assisting in endoscopic submucosal dissection
  • Medical catheter for assisting in endoscopic submucosal dissection

Examples

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Embodiment Construction

[0025] The embodiments of the present invention will now be described with reference to the accompanying drawings, in which similar element numbers represent similar elements.

[0026] Please refer to Figure 1-Figure 4 , The medical catheter for assisted endoscopic mucosal dissection (ESD) has two models, with plastic Shore hardness as the standard, model one Figure 1-Figure 2 It is a catheter with a uniform hardness coefficient. The hardness of the entire catheter a is consistent. This model is simple to produce and low in cost. The hardness of the entire catheter a ranges from 45D to 63D. The best hardness is 55D; model two Figure 3-Figure 4 It is a catheter with a variable hardness coefficient. At one end of the catheter, there is a small section of softer hose b, namely the tip. The hardness of the tip is in the range of 80A to 90A. The preferred hardness for specific use is 85A, and most of the others The main body of the catheter a is relatively hard, and the hardness of ...

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Abstract

The invention discloses a medical catheter for assisting in endoscopic submucosal dissection. The medical catheter comprises a catheter in single hardness and a catheter in variable hardness; the former is a whole catheter in single hardness; the latter is the catheter having one section at one end with the hardness being relatively less than the hardness of the other parts; and the catheter can pass through an endoscope biopsy duct and has a function of guiding and supporting a snare passing through the inner chamber of the catheter. The medical catheter for assisting in endoscopic submucosal dissection disclosed by the invention guides the snare to combine with an endoscope clip so as to assist in endoscopic submucosal dissection, to realize the pulling, pushing and exposing of the submucosa of the gastrointestinal mucosa and to greatly improve the visual field of endoscopic surgery, so that the safety and efficiency for cutting the gastrointestinal mucosa lesion of the endoscopic submucosal dissection can be promoted.

Description

Technical field [0001] The invention relates to the field of medical devices, and in particular to a medical catheter assisting endoscopic submucosal dissection. Background technique [0002] At present, endoscopic mucosal dissection (ESD) is the most important and commonly used method of endoscopic surgery to remove early tumors of the digestive tract. In order to perform endoscopic mucosal dissection more effectively, methods such as dental floss assisted method, hammer-clamp assisted method, curved forceps assisted method, and double-clamp assisted ESD have been studied. These methods are similar to playing the role of the second hand, by pulling or pushing the mucosa to lift the submucosa, so that the endoscopic operation field of the submucosa is fully exposed, thereby effectively assisting the treatment of ESD. However, these methods all have certain limitations. For example, the operation site is limited, the direction and force of pulling the mucosa cannot be adjusted i...

Claims

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Application Information

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IPC IPC(8): A61B17/00A61M25/00
CPCA61M25/0021A61M25/0043A61B17/00234A61B2017/00269A61B2017/0034A61M2210/1042A61M2210/005
Inventor 张强
Owner 张强
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