Apparatus for sensing and transmitting a pacemaker's stimulating pulse
US4151513A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1975 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Mar 6, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/37282
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus is disclosed for sensing and transmitting the stimulating pulse of an implanted pacemaker over readily available, low-bandwidth transmission media to a remote receiver capable of measuring the pulse width to provide an indication of the condition of the pacemaker energy source, e.g. a battery. In particular, the sensing and transmitting apparatus detects the electrical activity, e.g. the EKG, of a patient through attached electrodes and modulates a carrier or tone of a suitable frequency to be transmitted over the low-bandwidth transmission medium to the receiver, along with a pulse signal multiplied by a selected, fixed factor dependent upon the carrier frequency of the signal and the other information to be transmitted to the receiver. Illustratively, a factor in the range of 30-50 is selected where it is desired to transmit the pulse width of the pacemaker stimulating pulse along with an EKG, to a receiver to be displayed in a manner to permit evaluation of the EKG and of the width of the stimulating pulse. Typically, the patient in which the pacemaker is implanted has a transmitter for transmitting the aforementioned data to a receiver located in the doctor's office, …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.