US 4,046,141 AGranted

Method and apparatus for interfacing to anatomic signal sources

AssigneeLiberty Mutual Insurance Company

InventorCarlo J. DeLuca

Life of this patent

Estimating the term…

Loading patent…

Abstract

A system and a method for obtaining improved quality electrical signals generated anatomically. Included in the system are primary terminals suitable for implantation so as to pick up an anatomically generated primary signal comprising both a desired component derived from a primary tissue source and a noise component derived from an auxiliary tissue source directly adjacent to the primary source. Also included are auxiliary terminals suitable for implantation directly adjacent to the primary terminals so as to pick up an anatomically generated auxiliary signal derived from the auxiliary signal source. Electrical leads connect the primary and auxiliary terminals and an output circuit having a processor for differentially combining the primary and auxiliary signals. By obtaining and then differentially combining both the primary and auxiliary signals there is obtained a high quality output signal corresponding to the desired component of the primary signal.

Claims11

Dependent claims

An electrical system for interfacing to anatomic signal sources and comprising:

primary terminal means comprising a pair of spaced apart primary terminals for anatomic implantation, said primary terminals being electrically isolated from each other so as to receive a pair of primary signals generated physiologically, said primary signals comprising both a desired component derived from a primary tissue source and a noise component derived from an auxiliary tissue source;
auxiliary terminal means comprising a pair of spaced apart auxiliary terminals for anatomic implantation directly adjacent to said primary terminal means, said auxiliary terminals being electrically isolated from each other so as to receive a pair of auxiliary signals generated physiologically and derived from said auxiliary tissue source;
electrical lead means for anatomic implantation and connected to receive said primary and auxiliary signals;
and
output circuit means connected to said electrical lead means and comprising primary processing means for differentially combining said primary signals to provide a single common mode rejected primary signal, auxiliary processing means for differentially combining said auxiliary signals to provide a single common mode rejected auxiliary signal, and output processing means for differentially combining said common mode rejected primary and auxiliary signals.

2 more elements

A method for interfacing to anatomic signal sources and comprising:

forming primary terminal means on one end of a length of electrical lead means, said primary terminal means comprising a pair of spaced apart primary terminals;
forming auxiliary terminal means on one end of a second length of electrical lead means, said auxiliary terminal means comprising a pair of spaced apart auxiliary terminals;
anatomically implanting said primary terminal means with said primary terminals electrically isolated from each other so as to receive a pair of primary signals generated physiologically, said primary signals comprising both a desired component derived from a primary tissue source and a noise component derived from an auxiliary tissue source;
anatomically implanting said auxiliary terminal means with said auxiliary terminals electrically isolated from each other directly adjacent to said primary terminals means so as to receive a pair of auxiliary signals generated physiologically and derived from said auxiliary tissue source;
differentially combining said primary signals to provide a single common mode rejected primary signal;
differentially combining said auxiliary signals to provide a single common mode rejected auxiliary signal;
and
differentially combining said common mode rejected primary and auxiliary signals.

5 more elements

Dependencies are inferred from the claim text.