Electronically monitored angioplasty system
US5383855A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1992 |
| Grant date | Jan 24, 1995 |
| Priority date | — |
| Expiry date | Aug 20, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/50
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electronically monitored angioplasty system is provided with a verifier circuit to verify the operation of conversion circuitry for converting an electrical pressure signal from a pressure transducer to a displayed numerical value on a digital read-out. The verifier circuit is selectively activated to offset the displayed numerical value by a predetermined amount and upon deactivation the displayed numerical value returns to the pressure sensed by the pressure transducer in the balloon. In one embodiment, a reference signal to the conversion circuitry is selectively offset by a signal corresponding to the predetermined amount and in another embodiment the electrical pressure signal itself is selectively offset by a reference signal corresponding to the predetermined amount. In another aspect of the system, an audible balloon deflation indicator circuit sounds a pleasant signal that the pressure within the balloon has fallen below a threshold pressure so the doctor need not divert attention from the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.