Implantable demand pacemaker and monitor
US4187854A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1977 |
| Grant date | Feb 12, 1980 |
| Priority date | — |
| Expiry date | Oct 17, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3706
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Cardiac monitoring and pacing apparatus comprising a first external unit for transmitting electromagnetic energy within the patient's body to be received by a second, surgically implanted unit within the patient's body and adapted to be solely powered by the transmitted electromagnetic energy. The first external unit transmits electromagnetic energy within the patient's body which is sensed and used to power the implanted unit, which stimulates, via pacing electrodes, the patient's heart. The internal unit also includes a monitoring circuit connected to the same pacing electrodes coupled to the patient's heart, for providing atrial and ventrical signals to be pulse-width modulated for transmission to the external unit. The external unit decodes the transmitted signals to provide diagnostic quality signals indicative of the patient's EKG.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.