Interrogator for muscle stimulator
US4553548A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1983 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Aug 19, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3604
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An interrogator for remotely interrogating an internal counter of a scoliosis treatment device. An internal counter of the treatment device is incremented for those periods of time in which the treatment level of the device is in excess of a compliance level. The interrogator communicates with the internal counter by means of two serial data lines. On one data line the interrogator generates a clock signal to the internal counter for incrementing the device and on the other data line the interrogator receives a pulse indicating the internal counter has overflowed. By incrementing the internal counter through a full cycle of its maximum count the counter will retain the count present when it is interrogated. Additionally, by counting the number of, clock counts comprising the period from the overflow signal to the end of a full cycle a duplication of the count in the remote internal counter can be stored in the interrogator and subsequently displayed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.