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Medical prosthesis for preventing gastric reflux in the esophagus

  • US 5,861,036 A
  • Filed: 09/23/1997
  • Issued: 01/19/1999
  • Est. Priority Date: 03/28/1995
  • Status: Expired due to Term
First Claim
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1. A prosthesis to prevent gastric reflux in the esophagus including a tube (1,6) made of a biocompatible polymer that is resistant to gastric acid, one end of said tube being implanted at the upper opening of the stomach (5), the other end of said tube hanging freely in the stomach cavity, wherein the tube (1,6) has a generally constant sectional diameter of between 25 and 30 mm along substantially the entire length thereof from said one end to said other end and the tube has a length ranging between 5 and 10 cm, a thickness of a wall of the tube (1,6) ranging between 0.2 and 0.6 mm, depending on the nature of the polymer, thereby to collapse under lateral pressure applied thereto externally, when the level of pressure generated by gastric reflux is reached.

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