Activity sensing pacemaker
First Claim
1. An activity sensing pacemaker comprising:
- heart pulse sensing means for sensing heart pulses;
pulse generating means for generating pacing pulses;
activity sensing means for sensing body movements of a patient wearing said pacemaker relative to the chest of the patient in specific ones of three dimensions/directions extending along an x axis, a y axis, or a z axis, and independent of the force of gravity, said activity sensing means including first means for sensing activity along a first one of said three axes and second means for sensing activity along a second one of said three axes; and
,control means coupled to said heart pulse sensing means, to said pulse generating means and to said activity sensing means for controlling the pacing frequency of the pacing pulses generated by said pulse generating means either in response to the intrinsic heart rhythm of the patient sensed by said heart pulse sensing means or in response to the direction and frequency of the patient'"'"'s body motions sensed by said activity sensing means in or along at least two of said three axes, x, y, or z, relative to the patient'"'"'s chest.
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Accused Products
Abstract
The activity sensing pacemaker comprises: a heart pulse sensing device for sensing heart pulses; pulse generating circuitry for generating pacing pulses; activity sensing structure and circuitry for sensing activity/movement of a patient wearing the pacemaker in one or more of three directions/dimensions, x, y, z, and for causing the pulse generating circuitry to generate pacing pulses at a rate/frequency related to the movements sensed; and, control circuitry coupled to the heart pulse sensing device, to the pulse generating circuitry and to the activity sensing structure and circuitry for controlling the pulse generating circuitry in response to the heart pulses sensed or in response to the patient movements sensed, the activity sensing structure and circuitry causing generation of control pulses related to the movements of the patient and the control circuitry including frequency sensing circuitry for sensing the frequency of the control pulses generated and for controlling the rate/frequency of the pacing pulses generated by the pulse generating circuitry relative to the frequency of the control pulses generated by the movements of the patient in one or more directions/dimensions, x, y, z, independent of the duration or amplitude of the control pulses.
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Citations
30 Claims
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1. An activity sensing pacemaker comprising:
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heart pulse sensing means for sensing heart pulses; pulse generating means for generating pacing pulses; activity sensing means for sensing body movements of a patient wearing said pacemaker relative to the chest of the patient in specific ones of three dimensions/directions extending along an x axis, a y axis, or a z axis, and independent of the force of gravity, said activity sensing means including first means for sensing activity along a first one of said three axes and second means for sensing activity along a second one of said three axes; and
,control means coupled to said heart pulse sensing means, to said pulse generating means and to said activity sensing means for controlling the pacing frequency of the pacing pulses generated by said pulse generating means either in response to the intrinsic heart rhythm of the patient sensed by said heart pulse sensing means or in response to the direction and frequency of the patient'"'"'s body motions sensed by said activity sensing means in or along at least two of said three axes, x, y, or z, relative to the patient'"'"'s chest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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14. The pacemaker of claim 14 wherein said first axis is a Z axis of each plate, said second axis extends parallel to the X axis of each plate, and the third axis extends parallel to the Y axis of each plate.
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27. An activity sensing pacemaker comprising:
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heart pulse sensing means for sensing heart pulses; pulse generating means for generating pacing pulses; activity sensing means for sensing activity/movement of a patient wearing said pacemaker in one or more of three directions/dimensions, x, y, z, and for causing said pulse generating means to generate pacing pulses at a rate/frequency related to the movements sensed; and
,control means coupled to said heart pulse sensing means, to said pulse generating means and to said activity sensing means for controlling said pulse generating means in response to the heart pulses sensed or in response to the patient movements sensed, said activity sensing means causing generation of control pulses related to the movements of the patient and said control means including frequency sensing means for sensing the frequency of the control pulses generated and for controlling the rate/frequency of the pacing pulses generated by said pulse generating means relative to the frequency of said control pulses generated by the movements of the patient in one or more directions/dimensions, x, y, z, independent of the duration or amplitude of said control pulses. - View Dependent Claims (28, 29, 30)
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Specification