Anti-backflow biliary tract drainage support

An anti-reflux and bile duct technology, applied in the field of medical devices, can solve the problems of difficult to remove stents, unable to contract the sphincter, blockage of stents and other problems, and achieve the effect of preventing reflux.
CN106308985AInactive Publication Date: 2017-01-11XIN HUA HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIN HUA HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
Publication Date
2017-01-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an anti-backflow biliary tract drainage support. The biliary tract drainage support includes (a) a support section (10) of a hollow tube-shaped structure; and (b) a drainage section (20), wherein the drainage section (20) includes a base (21) connected to the support section (20), petaloid members (23) (22) which extend from the base to a far end, and block-like structures (25) positioned at a near side. The biliary tract drainage support can ensure drainage of the biliary tract, can effectively prevent backflow of content of duodenums, and then can reduce the opportunities of support blocking and biliary tract infections.
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Description

technical field

[0001] The invention relates to the field of medical devices, in particular to a reflux-preventing biliary stent. Background technique

[0002] Biliary obstruction is a disease with a high mortality rate in surgical acute abdomen, which can be divided into malignant biliary obstruction and benign obstruction. Among them, malignant biliary obstruction is mostly secondary to gallbladder cancer, cholangiocarcinoma, pancreatic cancer and other hepatobiliary malignancies, while benign obstruction is mostly secondary to biliary stones, gallbladder surgery, or chronic pancreatitis.

[0003] Under normal conditions, the biliary tract remains sterile due to the tone of the sphincter of Oddis, continuous bile flushing, and the natural biological barrier within the biliary tract. However, when the biliary tract is obstructed, the biological barrier is disrupted, the bile duct is obstructed, cholestasis, and secondary bacterial infection develops. Pathogenic bacteria a...

Claims

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