Patent ID: 7488336
Filing Date: 2009-02-10
Classification: A61F

Abstract:
1. A gastroplasty ring comprising a flexible strip having two end portions for passing around a stomach and for being closed near said two end portions, a closure system for reducing the diameter of the opening of a stoma, said strip having an annular compression chamber of adjustable volume, a device for adjusting the internal pressure in said chamber so as to adjust its diametral expansion, with an adjustment catheter connected to said chamber and to said device, said closure system having means for locking and loosening said ring including a hollow walled sleeve provided in said strip at a first end portion, at least one deformable zone formed on said adjustment catheter, and an opening formed in the wall of said sleeve, said adjustment catheter being capable of sliding in said sleeve and through said opening to loop said ring, said deformable zone capable of expanding under increased pressure introduced by said device and bearing against said sleeve to lock said ring in a closed position, and capable of returning to an unexpanded state under a reduction in pressure to allow said catheter to slide freely and loosen the loop to release the diameter of the ring by relative displacement between said two end portions while maintaining the loop.