Controllable Gastric Band

• US 20090054914A1
• Filed: 04/11/2006
• Published: 02/26/2009
• Est. Priority Date: 04/11/2005
• Status: Active Grant

• Current Assignee: Wolfgang Lechner
• Original Assignee: Wolfgang Lechner
• Inventors: Lechner, Wolfgang
• Granted Patent: US 8,202,211 B2
• Time in Patent Office: Days
• US Class Current: 606/157
• CPC Class Codes: A61F 5/0033 with more than one chamber
• CPC Class Codes: A61F 5/0053 remotely adjustable

Abstract

The invention relates to a controllable stomach band (1) comprising a non-extendible rear (4) and a chamber (2) which is arranged on the stomach-side of the rear (4) and is used to control the restriction of the stomach by the supply or discharge of a liquid or a fluid into or out of the chamber (2). The aim of the invention is create one such stomach band (2), with which, during a corresponding rise in pressure in the stomach-restricting chamber (2), triggered for example by the passage of a swallowed bolus, the stomach can be temporarily enlarged to enable the bolus to pass easily and liquid to flow out via the stomach opening. To this end, a pressure chamber (6) is provided outside the rear (4), said pressure chamber being connected to the stomach-restricting chamber (2) by means of a pressure valve (5).

Claims

1. A controllable gastric band (1) including a nonextensible back (4) and a chamber (2) arranged on the stoma side of the back (4) for controlling the stoma restriction by supplying and discharging a liquid, or a fluid, respectively, to and from said chamber (2), a pressure chamber (6) being provided on the exterior of the back (4), which pressure chamber is connected to the stoma-restricting chamber (2) via a pressure valve (5), characterised in that the pressure valve (5) is designed to be controllable in its opening behaviour.

2. A gastric band (1) according to claim 1, characterized in that the pressure valve (5) is designed to be controllable with respect to the pressure level at which the pressure valve (5) will open.

3. A gastric band (1) according to claim 1, characterised in that the control of the pressure valve (5) is effected mechanically.

4. A gastric band (1) according to claim 3, characterised in that the mechanical control of the pressure valve (5) is effected by the aid of a liquid, or a fluid, respectively.

5. A gastric band (1) according to claim 3, characterized in that the mechanical control of the pressure valve (5) is effected via a second port chamber, which is connected with the valve (5) by a connection hose.

6. A gastric band (1) according to claim 1, characterised in that the control of the pressure valve (5) is effected electronically.

7. A gastric band (1) according to claim 1, characterised in that the pressure chamber (6) is designed to be elastic so that, due to its elastic properties, it is capable of storing volume at an elevated pressure.

8. A gastric band (1) according to claim 1, characterised in that the pressure chamber (6) is connected to the stoma-restricting chamber (2) via a backflow channel (7) including a non-return valve (8) so that the liquid stored in the pressure chamber (6) at an elevated pressure can be conveyed back into the stoma-restricting chamber (2).

9. A gastric band (1) according to claim 1, characterised in that the pressure valve (5) is connected to a means (9) for a temporal control.

10. The gastric band (1) according to claim 1, characterised in that a means (13) for detecting peristaltic waves is provided, which means (13) is connected to the pressure valve (5).

11. A gastric band (1) according to claim 1, characterised in that on the stoma-side of the back (4), at least one auxiliary chamber (12) is provided.

12. A gastric band (1) according to claim 1, characterised in that the stoma-restricting chamber (2) and/or the at least one auxiliary chamber (12) are connected to a port (10) to be arranged subcutaneously.

13. A gastric band (1) according to claim 12, characterised in that the pressure chamber (6) is arranged in or adjacent to the port (10).

14. A gastric band (1) according to claim 1, characterised in that a sensor (14) is provided for measuring the swallowing activity, which sensor is connected to the pressure valve (5).