The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 2004
Filed:
Jun. 07, 2001
Kulwinder S. Dua, Brookfield, WI (US);
Scott T. Moore, Rural Hill, NC (US);
John A. Karpiel, Winston-Salem, NC (US);
Wilson-Cook Medical Incorporated, Winston-Salem, NC (US);
Abstract
Disclosed is a pressure sensitive prosthesis ( ) that includes a tubular member ( ) having a passageway ( ) extending therethrough and a sleeve ( ) attached about one end of the tubular member. The sleeve functions as a one-way valve to permit fluid flowing through the sleeve lumen ( ) in a first direction ( ) and under a first pressure, while collapsing in response to fluid flowing in a second direction where the pressure that exceeds that of the first direction or pressure. One aspect of the invention includes an esophageal anti-reflux expandable prosthesis wherein the sleeve is adapted to invert back through the tubular stent frame to permit belching or vomiting (fluid or materials under a third, significantly higher pressure). Another aspect of the invention includes a tubular drainage stent ( ), such as a biliary or urethral stent in which the sleeve opens to permit passage of fluids, then collapses to prevent retrograde flow.