Foreign matter withdrawing claw under digestive endoscopy

Abstract

The invention relates to a foreign matter withdrawing claw under a digestive endoscopy. The foreign matter withdrawing claw under a digestive endoscopy comprises a handle and a sheath, wherein the tail end of the handle is fixed to the near end of the sheath; guide wires are arranged in the sheath in a penetrating manner; a sliding rail is arranged on the handle; a ring for drawing back or pushingthe guide wires to move in the sheath is arranged on the sliding rail in a sliding manner, and is fixed to the near ends of the guide wires; the far end positions of the guide wires are connected with a capturing umbrella; the capturing umbrella is elastic hook claws on which the guide wires are uniformly arranged in the circumferential direction; the initial state of the hook claws in the sheathis that the hook backs face the guide wires; and under a relaxed state, the claw tips of the hook claws outside the sheath extend towards the guide wires, and the hook claws are propped at the claw tips. The foreign matter withdrawing claw under a digestive endoscopy disclosed by the invention has the beneficial effects that to foreign matters including polyps and the like which are far from an outlet of a natural cavity channel, under the situation that the foreign matters cannot be withdrawn or drawn out with a conventional apparatus through a plier channel, the foreign matter withdrawing claw under a digestive endoscopy can be used for attempting quick and safe withdrawing under the situation that endoscopy withdrawing is not or slightly performed.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a device suitable for taking out various foreign bodies such as foreign bodies in the stomach, esophagus, especially the small intestine and colon, resected pathological tissues or polyps. Background technique [0002] Gastrointestinal polyps are common clinical diseases, especially colon polyps are the most common, and can also be found in the stomach, esophagus, duodenum and small intestine. As precancerous lesions, most gastrointestinal polyps will become malignant if no intervention is taken. Therefore, early diagnosis and treatment of gastrointestinal polyps under digestive endoscopy can significantly reduce the incidence of gastrointestinal malignant tumors. At present, the methods of endoscopic polypectomy mainly include thermal biopsy forceps coagulation, thermal biopsy forceps cauterization, snare ring removal, submucosal resection (EMR), submucosal dissection (E...

AI Technical Summary

Problems solved by technology

The above commonly used methods have the following problems in clinical practice: 1. Repeated mirror entry and withdrawal operations increase operational risks, time-consuming and patient pain; 2. The snare, basket or net bag is difficult to operate and difficult to use. The use of the above instruments to capture polyps under endoscopy is a huge challenge for inexperienced endoscopists. It requires repeated attempts to operate or even fail to achieve, which increases the operation time and operation-related risks. 3. All kinds of grasping forceps can only grasp relatively small and soft specimens, and after clamping the specimens, it is easy for the specimens to fall off or the mucous membrane of the digestive tract to be grasped by the forceps In the case of sharp side wall injuries, for some patients with poor intestinal preparation or difficult access to the endoscope, once the specimen falls off and the search is performed again or the endoscope is inserted again, the situation will be very difficult or even the possibility of search failure may occur, resulting in Precious pathological specimens cannot be recovered

Aiming at clinical practice, the existing disadvantages of this invention are: 1. The key point of operation for polyp snare resection is to tie the snare at the root of the polyp pedicle, and it is very difficult to apply the snare on some huge polyps in the actual operation process , it is even necessary to try from various angles. If a pocket is installed on one side of the snare, polypectomy is much more difficult when there is only one operating surface left, which may increase the operation time or the risk of operation failure; 2. In a limited operation space Performing multiple polyp capture operations is no different from multiple polyp extirpation followed by subsequent extraction operations around the wound, which may cause unnecessary operation-related complications such as mucosal tearing and bleeding; 3. The device is effective for foreign bodies in the digestive tract Difficult to capture such hard substances

[0004] At present, there is a lack of a flexible and easy-to-take-out device suitable for foreign bodies in the stomach, esophagus, especially the small intestine, and colon, especially pathological tissues that have undergone resected polyps.

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