Apparatus for monitoring cardiac contractility
First Claim
1. Apparatus for monitoring cardiac contractility, comprising a signal processing means and a catheter having a tip for insertion into the ventricle of the heart muscle, said catheter containing at or proximate its tip a first acceleration transducer responsive to the natural heart acceleration to provide an acceleration signal via said catheter to the signal processing means (9), characterized in that one of the signal processing means and the acceleration transducer is arranged to suppress frequencies outside the range of approximately 15 Hz to approximately 100 Hz.
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Abstract
Apparatus for monitoring cardiac contractility comprises a catheter having a tip for insertion into the ventricle of the heart muscle. At or proximate the tip is an acceleration transducer responsive to the natural, multi-directional heart acceleration to provide an acceleration signal to a signal processor. The apparatus is arranged to suppress frequencies outside the range approximately 15 Hz to approximately 100 Hz.
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29 Claims
- 1. Apparatus for monitoring cardiac contractility, comprising a signal processing means and a catheter having a tip for insertion into the ventricle of the heart muscle, said catheter containing at or proximate its tip a first acceleration transducer responsive to the natural heart acceleration to provide an acceleration signal via said catheter to the signal processing means (9), characterized in that one of the signal processing means and the acceleration transducer is arranged to suppress frequencies outside the range of approximately 15 Hz to approximately 100 Hz.
Specification