Patent ID: 7530943
Filing Date: 2009-05-12
Classification: A61F,Y02A

Abstract:
1. In a controllable gastric band including a nonextensible back and a first chamber arranged to be on a stoma side of the back for controlling stoma restriction by supplying and discharging liquid to and from the first chamber, the improvements in that a second chamber is provided on the stoma side of the back, the second chamber communicating with the first chamber in a manner to ensure the controlling of the stoma restriction by a displacement of the liquid between the first and second chambers, wherein the communicating of the chambers comprises a connection with each other via an auxiliary chamber, wherein a valve between the second chamber and the auxiliary chamber, the valve allows transport of the liquid only from the second chamber to the auxiliary chamber, and a further valve between the auxiliary chamber and the first chamber allows transport of the liquid only from the auxiliary chamber to the first chamber.