Apparatus for administering medical therapy using detrended fluctuation analysis of physiological activity
First Claim
1. A medical apparatus comprising:
- a housing having a size and shape adapted for implantation in a subject;
therapy means disposed in said housing for producing a medical therapy regimen;
means connected to said therapy means and adapted for interaction with the subject for delivering said medical therapy regimen in vivo to the subject;
sensor means adapted for interaction with the subject for obtaining an electrical signal representing physiological activity of the subject;
signal analysis means disposed in said housing and connected to said sensor means, for performing detrended fluctuation analysis of said electrical signal and thereby obtaining a self-similarity parameter for said electrical signal; and
means for making said self-similarity parameter extracorporeally available.
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Accused Products
Abstract
An implantable medical apparatus includes a therapy unit which produces a medical therapy regimen which is administered by the implantable medical apparatus to a subject. The implantable medical apparatus obtains an electrical signal representing physiological activity of the subject and performs detrended fluctuation analysis on the electrical signal so as to obtain a self-similarity parameter for the electrical signal. Deviations of the self-similarity parameter from a nominal value indicate the severity of the pathology of the subject which the implanted medical apparatus is intended to treat. The self-similarity parameter can be made extracorporeally available for use by a physician to evaluate the effectiveness of a treatment program currently in place, and/or can be supplied to a control unit of the implantable medical apparatus for use in automatically adjusting the therapy regimen administered by the implantable medical apparatus.
71 Citations
24 Claims
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1. A medical apparatus comprising:
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a housing having a size and shape adapted for implantation in a subject; therapy means disposed in said housing for producing a medical therapy regimen; means connected to said therapy means and adapted for interaction with the subject for delivering said medical therapy regimen in vivo to the subject; sensor means adapted for interaction with the subject for obtaining an electrical signal representing physiological activity of the subject; signal analysis means disposed in said housing and connected to said sensor means, for performing detrended fluctuation analysis of said electrical signal and thereby obtaining a self-similarity parameter for said electrical signal; and means for making said self-similarity parameter extracorporeally available. - View Dependent Claims (2, 3, 4, 5)
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6. A medical apparatus comprising:
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a housing having a size and shape adapted for implantation in a subject; therapy means disposed in said housing for producing a medical therapy regimen; means connected to said therapy means and adapted for interaction with the subject for delivering said medical therapy regimen in vivo to the subject; sensor means adapted for interaction with the subject for obtaining an electrical signal representing physiological activity of the subject; signal analysis means disposed in said housing and connected to said sensor means, for performing detrended fluctuation analysis of said electrical signal and thereby obtaining a self-similarity parameter for said electrical signal; and control means for controlling production of said medical therapy regimen by said therapy means dependent on said self-similarity parameter. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A cardiac pacemaker comprising:
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a housing having a size and shape adapted for implantation in a subject; pulse generator means disposed in said housing for emitting a pacing regimen comprising a plurality of pacing pulses; an electrode lead connected to said pulse generator means and terminating in at least one electrode for interaction with said subject for delivering said pacing pulses in vivo to said subject; sensor means adapted for interaction with the subject for obtaining at least one electrical signal representing physiological activity of the subject; signal analysis means disposed in said housing and connected to said sensor means for performing detrended fluctuation analysis of said electrical signal and thereby obtaining a self-similarity parameter for said electrical signals; and telemetry means in said housing for making said self-similarity parameter extracorporeally available. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification