Implantable artificial sphincter system
US4994020A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Jul 21, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/25
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable artificial sphincter system for reversibly occluding a body passageway, which system includes occlusion means, pump means, and the unique feature of a fluid capacitor disposed on a control assembly for the system, which is capable of increasing volume under fluid pressure. The fluid capacitor is connected with the occlusion means in such fashion that said occlusion means will remain substantially inflated during short, but significant, pressure increases, but will at least partially deflate upon the advent of prolonged but moderate pressure increases on the body passageway. While in its preferred embodiment no other fluid containing component is needed, if desired a volume compensator can also be included in the system. A valve preferably of the magnetic type can also be included for activating or deactivating the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.