Method and adaptor for connecting a powered surgical instrument to a medical console
US5903117A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1997 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Oct 28, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/32002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brush-to-brushless motor controller adapter for use with a two-wire output signal from a medical console consists of a small enclosure containing a circuit board and has a short cable terminating in a two-wire connector which plugs into the two-wire controller output of the medical console and a connector jack for an electrical connection to a surgical instrument having a brushless D.C. motor. The brush-to-brushless motor controller generates a stable voltage for the adapter internal electronics (i.e., 12 to 15 volts), from a varying input voltage (i.e., 2.5 to 30 volts D.C.). The surgical instrument brushless D.C. motor speed is controlled as a function of the console output signal drive voltage amplitude and the adapter accepts pulsed inputs from a high power two-wire motor controller (e.g., 10 watts and up). The adapter accepts bipolar drive signals and is adapted to reverse the surgical instrument brushless D.C. motor direction in response to a change in input voltage polarity from the two-wire medical console controller circuit. The adapter circuit of the present invention eliminates the need for a negative supply voltage by creating a positive bias in the control loop such …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.