Programmable pacemaker with r.f. bit time-related to clock rate

Details Programmable pacemaker with r.f. bit time-related to clock rate Programmable pacemaker with r.f. bit time-related to clock rate

A - Human Necessities

61

N

326/1.3

A61N 1/36 (2006.01) A61N 1/372 (2006.01)

Patent

CA 1135345

ABSTRACT There is disclosed herein a programmable cardiac pacemaker pulse generator utilizing digital circuitry for controlling the provision of card- iac stimulating pulses. The pulse generator is capable of having the rate, the pulse width, the pulse amplitude, the refractory period, the sensitivity and the mode of operation programmed. In addition, the pulse generator can have the output inhibited and can respond to programming signals causing a threshold margin test to be performed, effects of closure of the read switch overridden, a hysteresis function added and a high rate exceeding the normal upper rate limit programmed. Many of the programmable functions of the pulse generator can either be programmed on a permanent or a temporary basis. The pulse generator further includes means for signaling the acceptance of a programming signal, and means to reset the program acceptance circuit if ex- traneous signals are detected as programming signals. The program signal acceptance circuit performs several different checks on the detected pro- gramming signal including a parity check, an access code check and determin- ing if the proper number of signals were transmitted within a given time. The timing circuit of the pulse generator includes a crystal clock oscillator and counter means for counting the clock pulses therefrom to determine the rate of the pacemaker. The pulse width of each pacemaker pulse is determined by using a voltage controlled oscillator in place of the crystal oscillator to obtain energy compensation due to the battery voltage decreasing with time.

339207

Affiliated with

Also associated with

Rating

Programmable pacemaker with r.f. bit time-related to clock rate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Programmable pacemaker with r.f. bit time-related to clock rate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable pacemaker with r.f. bit time-related to clock rate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-325397