High efficiency external counterpulsation apparatus and method for controlling same
US6863670B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2003 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Jun 18, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2230/25
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides a method for applying external counterpulsation to a patient, including detecting a blood-flow impedance signal, self-adaptive filter processing the detected blood-flow impedance signal, and adjusting inflation of an inflatable member based on the self-adaptive filter processing in order to optimize counterpulsation timing. The present invention further includes an external counterpulsation apparatus providing a high-frequency current source applied to the patient to produce an electrocardiographic signal and a blood flow impedance signal, as well as an amplifier-filter circuit to operably condition the electrocardiographic signal and a heart impedance signal amplifier receiving the blood flow impedance signal. A computer processes the signals and controls a fluid distribution device to distribute compressed fluid to a plurality of inflatable members based on said processed signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.