Rate responsive leadless cardiac pacemaker
First Claim
1. A method of pacing a patient'"'"'s heart, comprising:
- sensing a parameter with a sensor hermetically contained within a housing of a leadless pacemaker implanted in the heart, wherein the leadless pacemaker comprises a plurality of electrodes formed integrally to the housing or coupled to the housing at a maximum distance of 2 centimeters;
generating electrical pulses with a pulse delivery system hermetically contained within the housing of the leadless pacemaker;
delivering the electrical pulses through the electrodes of the leadless pacemaker to stimulate the heart at least partly based on the sensed parameter;
generating encoded information signals within the leadless pacemaker;
directly communicating the encoded information signals from the leadless pacemaker during a cardiac refractory period of the heart to a device external to the patient through the electrodes of the leadless pacemaker; and
sourcing energy of no more than 75-80 microwatts instantaneously for generating the electrical pulses using a battery, wherein the peak power of the leadless pacemaker is less than or equal to 74 microwatts.
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Accused Products
Abstract
A leadless cardiac pacemaker comprises a housing, a plurality of electrodes coupled to an outer surface of the housing, and a pulse delivery system hermetically contained within the housing and electrically coupled to the electrode plurality, the pulse delivery system configured for sourcing energy internal to the housing, generating and delivering electrical pulses to the electrode plurality. The pacemaker further comprises an activity sensor hermetically contained within the housing and adapted to sense activity and a processor hermetically contained within the housing and communicatively coupled to the pulse delivery system, the activity sensor, and the electrode plurality, the processor configured to control electrical pulse delivery at least partly based on the sensed activity.
660 Citations
9 Claims
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1. A method of pacing a patient'"'"'s heart, comprising:
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sensing a parameter with a sensor hermetically contained within a housing of a leadless pacemaker implanted in the heart, wherein the leadless pacemaker comprises a plurality of electrodes formed integrally to the housing or coupled to the housing at a maximum distance of 2 centimeters; generating electrical pulses with a pulse delivery system hermetically contained within the housing of the leadless pacemaker; delivering the electrical pulses through the electrodes of the leadless pacemaker to stimulate the heart at least partly based on the sensed parameter; generating encoded information signals within the leadless pacemaker; directly communicating the encoded information signals from the leadless pacemaker during a cardiac refractory period of the heart to a device external to the patient through the electrodes of the leadless pacemaker; and sourcing energy of no more than 75-80 microwatts instantaneously for generating the electrical pulses using a battery, wherein the peak power of the leadless pacemaker is less than or equal to 74 microwatts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of pacing a patient'"'"'s heart, comprising:
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sensing a parameter with a sensor hermetically contained within a housing of a leadless pacemaker implanted in the heart, wherein the leadless pacemaker comprises a plurality of electrodes formed integrally to the housing or coupled to the housing at a maximum distance of 2 centimeters; generating electrical pulses with a pulse delivery system hermetically contained within the housing of the leadless pacemaker; delivering the electrical pulses through the electrodes of the leadless pacemaker to stimulate the heart at least partly based on the sensed parameter; generating encoded information signals within the leadless pacemaker; directly communicating the encoded information signals from the leadless pacemaker during a cardiac refractory period of the heart to a device external to the patient through the electrodes of the leadless pacemaker, wherein the sensor is configured to operate with a power requirement of no more than 10 microwatts.
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Specification