Programmable digital cardiac pacemaker with means to override effects of reed switch closure

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4273133
SERIAL NO

05958325

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A programmable cardiac pacemaker pulse generator utilizing digital circuitry for controlling the provision of cardiac 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 reed 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 extraneous signals are detected as programming signals. The program signal acceptance circuit performs several different checks on the detected programming signal including a parity check, an access code check and determining 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.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MED REL, INC.HUMACAO0

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hartlaub, Jerome T New Brighton, MN 44 2101
McDonald, Ray S St. Paul, MN 22 677
Rossing, Martin A Anoka, MN 78 4039

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
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TAYONG MEDICAL, LLC (2)
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Cardiac Pacemakers, Inc. (8)
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7630773 Adaptive software configuration for a medical device 20 2006
8565875 Cardiac rhythm management system with maximum tracking rate (MTR) hysteresis 0 2010
 
BODY SCIENCE LLC (2)
8771184 Wireless medical diagnosis and monitoring equipment 0 2007
* 2007/0208,235 Wireless medical diagnosis and monitoring equipment 77 2007
 
BIOTRONIK MESS- UND THERAPIEGERAETE GMBH & CO. INGENIEURBUERO BERLIN (1)
* 4412541 Cardiac pacemaker 31 1982
 
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* Cited By Examiner