Buket Grau,David Robert Gale,Sam Anne Musgrave,George McGee Perkins,Mark Jeffrey Edhouse,Marc Graham,Christopher Kadamus
申请号：
US12384890
公开号：
US08142385B2
申请日:
2009.04.09
申请国别(地区):
US
年份:
2012
代理人:
摘要：
A pyloric valve is provided for inhibiting the flow of chyme through the pyloric region of the gastrointestinal tract. The pyloric valve includes a blocking portion having a disc-shaped inlet and a helical flange. The helical flange may be disposed in a contracted position defining a contracted length and a contracted diameter and an extended position defining an extended length and an extended diameter, wherein the extended length is longer than the contracted length and the extended diameter is smaller than the contracted diameter. The pyloric valve may further include a sleeve that may have a beveled distal end. The pyloric valve may be constructed of silicon. Also provided are methods of inserting and removing the pyloric valve, which each include a step of manipulating the support between its contracted and extended positions. Insertion and removal systems are also provided for use with the pyloric valve.
