Hydraulic gastric band with collapsible reservoir
US8323180B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2011 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Jul 15, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/043
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A self-regulating gastric band apparatus for adjusting stoma size. The apparatus includes an adjustable gastric band with an expandable inner ring. A band adjustment assembly includes a sensor for sensing fluid pressure in the inner ring and a pump assembly connected to the inner ring and to a controller for adjusting the volume of the fluid in the band based on the sensed fluid pressure. A memory stores an operating range of a target fluid pressure, and the pump assembly maintains the sensed band pressure within the operating range. An elongated fluid reservoir extends along part of a fill tube. An expandable fluid reservoir stores a volume of the fluid for adjusting the volume of fluid in the lumen. A protective outer sheath is provided around the exterior of an expandable fluid reservoir in both a first, deflated state, and a second, inflated state of the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.