Pacemaker lead with motion sensor
OwnerWillem Wesselink, Henricus De Bruyn +1inventors
InventorsWillem Wesselink, Henricus De Bruyn, Mattias Rouw
Life of this patent
Estimating the term…
Abstract
A system and method are provided for monitoring cardiac wall motion. A cardiac lead is provided with a motion sensor that is responsive to an excitation signal. The motion sensor signal induced by the excitation signal varies in time due to motion caused by myocardial wall motion. The time-varying motion sensor signal is obtained by sensing circuitry and provided to a processor for use in computing a wall motion parameter useful in assessing ventricular function. The processor provides wall motion parameter output for display or storage. Pacing parameters may be optimized according to wall motion parameter measurements obtained during iterative procedures using the lead-mounted motion sensor.
Claims19
A system, comprising:
- a cardiac lead having a motion sensor disposed at or near the distal lead end;
- an external excitation signal source;
- a sensing module for receiving a signal from the motion sensor produced in response to the external excitation signal source;
- and
- a processor for computing a measurement of cardiac wall motion using the motion sensor signal received from the sensing module.
A system, comprising:
- means for generating an external excitation signal;
- means for generating a time-varying signal in response to the excitation signal that varies in time due to cardiac wall motion;
- means for receiving the time-varying signal;
- means for computing a wall motion measurement using the time-varying signal.
A method, comprising:
- generating an external excitation signal;
- receiving an induced signal from a wall motion sensor responsive to the external excitation signal, the induced signal being a time-varying signal that varies in time due to cardiac motion;
- computing a wall motion measurement from the received signal.
The method of claim 18, wherein generating the external excitation signal further comprises generating a second electromagnetic field orthogonal to the first electromagnetic field.
Dependencies are inferred from the claim text.