Pacer output circuit
First Claim
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1. An improved pacer output/input circuit of the type having firstand second output electrode connections for coupling to the heart, for producing a biphasic stimulation output pulse from single ended power supply and having an output voltage twice that of said power supply in response to pace input signals including:
- a first current limiting buffer for selectively sourcing or sinking current from a first output electrode connection in response to a first control signal;
a second current limiting buffer for selectively sourcing or sinking current from said second output electrode in response to a second control signal; and
wherein the improvement comprises;
means for producing a time sequence of the complementary first and second control signals in response to a sequence of pace input pulses.
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Abstract
Pacer output circuitry for providing biphasic stimulation pulses to heart tissue at a voltage twice the supply voltage. Additionally, the circuit may be configured to sense the intracardiac electrogram in a unipolar or bipolar configuration.
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Citations
4 Claims
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1. An improved pacer output/input circuit of the type having first
and second output electrode connections for coupling to the heart, for producing a biphasic stimulation output pulse from single ended power supply and having an output voltage twice that of said power supply in response to pace input signals including: -
a first current limiting buffer for selectively sourcing or sinking current from a first output electrode connection in response to a first control signal; a second current limiting buffer for selectively sourcing or sinking current from said second output electrode in response to a second control signal; and wherein the improvement comprises;
means for producing a time sequence of the complementary first and second control signals in response to a sequence of pace input pulses. - View Dependent Claims (2, 3, 4)
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Specification