2 results about "Mucosal resection" patented technology

The utility model belongs to medical apparatus and instruments, concretely relates to a kind of pathological auxiliary material taking tool of endoscopic mucosal resection specimen, including total connecting plate and comb plate;The side of total connecting plate is connected comb plate;Comb plate is composed of several parallel straight boards, the width of each straight board is less than target material taking width;The distance between the upper edge of the n-1th straight board to the upper / lower edge of the nth straight board is equal to the distance between the upper / lower edge of the nth straight board to the upper / lower edge of the n+1th straight board, and the distance between the upper / lower edge of the n-1th straight board to the upper / lower edge of the nth straight board is equal to target material taking width, wherein, n is natural number greater than 1 and less than total number N.Compared with prior art, the utility model solves the problem that it is difficult to control the cutting size and easy to cause specimen contamination when cutting specimen into mucosal strips in prior art.The tool of the present scheme can effectively assist cutting positioning and control the cutting size.

The invention belongs to the technical field of biological materials, and particularly relates to a preparation method and application of agglomerate powder capable of being delivered under an endoscope for preventing digestive tract stenosis after endoscopic submucosal dissection. The preparation method comprises the following steps: dissolving a polysaccharide compound in a solvent, and adding unsaturated carboxylic acid anhydride for graft modification; respectively dissolving the modified polysaccharide and the hydrophilic polymer, and mixing; preparing a suspension containing a polyphenol compound and a therapeutic active substance; and mixing the mixed solution and the suspension until phase separation, collecting a condensed phase, and performing freeze drying and grinding treatment to obtain condensed powder. The aggregate powder has excellent wet tissue adhesion capacity, can be directly delivered to the surface of a wound through an endoscope working channel, forms a protective barrier, slowly releases treatment active substances, inhibits local inflammatory response and tissue fibrosis, effectively prevents digestive tract endoscopic submucosal dissection postoperative stenosis, and is particularly suitable for preventing esophageal ESD postoperative stenosis.