Method and apparatus for detection of posterior ischemia
First Claim
Patent Images
1. A method of automatically detecting a selected posterior heart condition in a person comprising:
- positioning a sensing electrode adjacent a posterior surface of the person'"'"'s heart;
electrically stressing the heart;
detecting electrical signals from the electrode that have been generated in response to stressing the heart irrespective of the presence of stressing induced artifacts;
filtering the detected signals;
automatically locating a local maximum of the filtered signals;
automatically measuring selected regions of the filtered signals adjacent the local maximum; and
generating an indicium indicative of the presence or absence of the selected posterior heart condition.
3 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for automatically detecting a posterior ischemia includes a multi-element esophageal electrode coupled to an artifact suppressing circuit and a cardiac stimulator. Output from the artifact suppressing circuit, the detected QRS wave, is processed in analog and digital filters. The processed signal is analyzed to automatically determine the presence or absence of the posterior ischemia.
-
Citations
42 Claims
-
1. A method of automatically detecting a selected posterior heart condition in a person comprising:
-
positioning a sensing electrode adjacent a posterior surface of the person'"'"'s heart; electrically stressing the heart; detecting electrical signals from the electrode that have been generated in response to stressing the heart irrespective of the presence of stressing induced artifacts; filtering the detected signals; automatically locating a local maximum of the filtered signals; automatically measuring selected regions of the filtered signals adjacent the local maximum; and generating an indicium indicative of the presence or absence of the selected posterior heart condition. - View Dependent Claims (2, 3, 4, 5)
-
-
6. An apparatus for automatically detecting a selected posterior heart condition in a person comprising:
-
electrode means, positionable in the person'"'"'s esophagus adjacent a posterior surface of the person'"'"'s heart, for sensing electrical signals generated by the heart; means for electrically stressing the heart; means for detecting electrical signals from said electrode means that have been generated in response to stressing the heart; means for recording the detected signals essentially simultaneously with said stressing; means for processing the detected, recorded, signals; means for automatically measuring selected regions of the processed signals; and means for generating an indicium indicative of the presence or absence of the selected posterior heart condition. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method of non-invasively and automatically detecting posterior ischemia of a heart comprising:
-
positioning a sensing electrode adjacent a posterior surface of the person'"'"'s heart; stressing the heart; detecting electrical signals from the electrode that have been generated in response to stressing the heart; processing the detected signals; automatically measuring selected regions of the processed signals; and generating an indicium indicative of the presence or absence of the posterior ischemia. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
-
-
26. A method of detecting posterior ischemia of a heart comprising:
-
positioning a multi-element electrode adjacent a posterior surface of the heart; supplying a selected heart stressing electrical signal to at least selected elements of the electrode; suppressing artifacts generated by the stressing electrical signal; detecting stress generated electrical signals from at least one selected element of the electrode; processing the detected signals; automatically measuring selected regions of the processed signals; and generating an indicium indicative of the presence or absence of the posterior ischemia. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
-
-
35. An apparatus for automatically detecting posterior ischemia in the heart of a person comprising:
-
multi-element electrode means, positionable in the person'"'"'s esophagus, for receiving and transmitting electrical signals; means, coupled to said electrode means, for supplying selected heart stressing electrical signals to selected elements of said electrode means; means, coupled to said processing means, for blocking selected electrical signals induced by said heart stressing electrical signals; means, coupled to said electrode means, for detecting stress generated electrical signals from at least one selected element of said electrode means, concurrent with said stressing; means for processing the detected signals and generating processed signals corresponding thereto; means for automatically measuring selected regions of the processed signals; and means for generating an indicium indicative of the presence or absence of the posterior ischemia. - View Dependent Claims (36, 37, 38, 39, 40)
-
-
41. A method of detecting a selected heart condition using esophageal pacing comprising:
-
supplying electrical pacing signals from an esophageal site adjacent a posterior surface of the heart; sensing heart generated, pacing related, electrical signals irrespective of any stressing induced artifacts; simultaneously recording the pacing signals exclusive of any induced artifacts; and automatically analyzing the recorded pacing signals; an analysis system for analyzing said recorded signals.
-
-
42. An apparatus for detection of a selected posterior heart condition from an esophageal site comprising:
-
an apparatus, positionable in the esophagus, for generating pacing electrical signals, said apparatus including a conductor for detecting pacing induced, heart generated electrical signals; a suppression circuit, coupled to said apparatus, for suppressing electrical artifacts induced by said pacing signals; a recording system for recording said pacing induced signals while generating said pacing signals; and an analysis system for analyzing said recorded signals.
-
Specification