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Double-layer drainage tube

A drainage tube and double-layer technology, applied in the field of double-layer drainage tubes, can solve the problems of reducing the drainage cross-sectional area of ​​the drainage tube, expanding the diameter of the drainage tube, difficulty in inserting and extubating the tube, etc., so as to avoid the adhesion of bile, reduce the diameter, and have a simple structure. Effect

Pending Publication Date: 2018-07-03
INNOVEX MEDICAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such a three-layer structure, in addition to increasing the cost, the stainless steel mesh in the middle also increases the thickness of the drainage tube wall, which will actually reduce the effective drainage cross-sectional area inside the drainage tube, or expand the overall diameter of the drainage tube. Difficulty in inserting and extubating the tube, increasing the pain of the patient, etc.

Method used

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Embodiment 1

[0032] Such as figure 1 and figure 2 As shown, the double-layer drainage tube provided by the present invention is composed of an inner layer 11 and an outer layer 12 that closely fit, the inner layer 11 is made of hydrophobic material, and the outer layer 12 is made of human biocompatible material. The inner layer 11 is made of hydrophobic material, which can ensure that the inner wall does not hang liquid, and avoid the clogging of the drainage tube caused by the adhesion of bile. Capacitive, will not cause inflammation; ensure the smoothness and safety of the drainage tube.

[0033] Further, the specific types of human biocompatible materials are not particularly limited. Considering the biocompatibility and cost of each material, the human biocompatible material is preferably one of polyurethane, polyethylene, silicone rubber and polyamide. species or several.

[0034]Furthermore, as the outer layer material, the above-mentioned human biocompatible materials have their...

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Abstract

The invention provides a double-layer drainage tube. The double-layer drainage tube is composed of an inner layer and an outer layer which fit tightly, wherein the inner layer is made from a hydrophobic material, and the outer layer is made from a human body biocompatible material. Liquid can not be retained on the inner wall, bile is avoided from being adhered to block the drainage tube, the outer wall is soft and elastic, the surface is smooth, compatibility with organism tissues is good, and inflammation can not be caused; meanwhile, diameter and cost of an outer tube are reduced under thecondition that a stainless steel wire intermediate layer does not exist, insertion difficulty is reduced, and meanwhile, inner diameter of the drainage tube is increased, and effective drainage crosssectional area of the drainage tube is effectively increased.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a double-layer drainage tube. Background technique [0002] With the continuous development of endoscopic technology and the continuous improvement of its accessories, duodenoscopy has become an important measure for the treatment of hepatobiliary and pancreatic diseases, including common bile duct stones, bile duct injury, bile duct stricture, and biliary tract complications after liver transplantation Wait. The contents of duodenoscopy mainly include: diagnostic endoscopic retrograde cholangiopancreatography (endoscopicretrograde cholangiopancreatography ERCP) and therapeutic ERCP. Therapeutic ERCP includes endoscopic sphincterotomy (EST), endoscopic biliary drainage (EBD), endoscopic nasal biliary drainage (ENBD), Endoscopic retrograde pancreatic drainage (ERPD) and corresponding endoscopic fistula. With the development of therapeutic ERCP (endoscopic retrograde cho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/00A61L29/14A61L29/06A61L29/04A61L29/08
CPCA61L29/041A61L29/06A61L29/08A61L29/14A61M25/0045A61M2025/0008C08L75/04C08L27/18A61M25/00A61L29/085A61L29/16A61L29/049A61M25/0068A61M27/002A61M2210/1075
Inventor 郑忠伟龚彪袁庆王攀严航
Owner INNOVEX MEDICAL CO LTD
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