Implantable medical pump with pressure sensor
US9737657B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2010 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Feb 10, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3331
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosure is directed to a pressure sensor of an implantable medical device. The pressure sensor may utilize detect fluid pressure based on a changing capacitance between two capacitive elements. The pressure sensor may define at least a portion of a fluid enclosure of the IMD. In one example, the pressure sensor has a self-aligning housing shape that occludes an opening in the pump bulkhead of the IMD. An operative surface of the pressure and the portion of the fluid enclosure may be formed of a corrosion resistant and/or biocompatible material. A first capacitive element of the pressure sensor may be a metal alloy diaphragm that deflects in response to external fluid pressure. A second capacitive element of the pressure sensor may be a metal coating on a rigid insulator sealed from the fluid by the diaphragm and a housing of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.