Precision rectifier circuit for high-density, low-power implantable medical device
US7282980B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 7, 2004 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Sep 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/513
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A precision voltage rectifier comprises a source voltage input and a voltage reference. The rectifier comprises switching elements that, according to the sign of the source signal, change the connections to the inputs of a differential difference amplifier that is connected as a voltage inverter. Embodiments of the invention are fully-integrated and CMOS compatible with high-input impedance such that the invention can be operated in low-power situations. A preferred application involves the integration of several similar circuits in a high-density, low-power implantable medical device. Particular embodiments of the invention can be used to rectify nerve signals collected by electrodes for use in a system for manipulating a prosthetic device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.