Sterilization system with a plasma generator controlled by a digital signal processor
US6841124B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2002 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Jan 6, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S422/906
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A sterilization system applies power to a plasma within a chamber to remove gas or vapor species from an article. The sterilization system includes a power feedback control system for controlling the power applied to the plasma. The power feedback control system includes a current monitor adapted to produce a first signal indicative of a current applied to the plasma within the chamber. The power feedback control system further includes a voltage monitor adapted to produce a second signal indicative of a voltage applied to the plasma within the chamber. The power feedback control system further includes a power control module comprising a programmable digital signal processor. The digital signal processor is adapted to receive and process the first signal and the second signal by multiplying the current and the voltage and producing a third signal indicative of the product of the current and the voltage. The power feedback control system further includes a plasma generator coupled to the power control module and adapted to adjust, in response to the third signal, the power applied to the plasma within the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.