Method and device for detecting a slow leak in an implantable hydraulic occlusion system
US10139304B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 2014 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Jan 1, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/008
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A detection method of a slow leak in a hydraulic occlusive system implantable in an animal or human body to occlude a natural conduit. The system includes a hydraulic circuit with an inflatable occlusive cuff containing a variable volume of fluid, surrounding a part of the natural conduit, a reservoir containing fluid, and a fluidic connection between the cuff and the reservoir. An activation device is coupled to a mobile element of the hydraulic circuit to transfer a determined volume of fluid from the reservoir to the cuff or from the cuff to the reservoir. A control unit urges the activation device to exert determined compression on the conduit. A variation of the compression exerted by the cuff on the conduit is created by transfer of an adjustable volume of said fluid between the reservoir and the cuff by measuring the evolution of the pressure in the hydraulic circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.