The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 1996
Filed:
Jan. 18, 1995
Sergiu Silvian, La Crescenta, CA (US);
Pacesetter, Inc., Sylmar, CA (US);
Abstract
An improved telemetry system for telemetering data from an implantable device such as a heart pacemaker to an external device with minimum energy consumption. The external device first sweeps its receiver across a predetermined frequency band, e.g., the fm broadcast band of 88 MHz to 108 MHz, to determine the particular frequency having the lowest ambient electromagnetic noise level, which it deems the optimum frequency for the telemetry to occur. The external device's transmitter then commands the pacemaker to telemeter a predetermined start signal at a succession of frequencies that sweep across that same frequency band, while the external device's receiver remains tuned to the optimum frequency. Eventually, the external devices receiver will receive the start signal and the external device thereupon will command the pacemaker to thereafter remain at its current frequency for the subsequent telemetry of data. Thus, the pacemaker is effectively tuned to the optimum frequency without the need for the pacemaker to incorporate an elaborate frequency synthesizer and without the need to draw excessive energy from the limited supply available so as to overcome interference at the operating frequency.