ISCHEMIC REGION DETECTION
First Claim
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1. An ischemia detecting system comprising:
- an implantable medical device comprising a connector connectable to a left ventricular cardiac catheter comprising at least a first sensor element and a second sensor element arranged on said left ventricular cardiac catheter to be positioned on either side of a branching vein in a coronary venous system of a heart in a subject, said first sensor element constituting a first sensor, configured to generate a first sensor signal representative of a concentration of a constituent in coronary venous blood in a first portion of said coronary venous system, or is connectable to a common sensor configured to generate, for said first sensor element, said first sensor signal, and said second sensor element constituting a second sensor, configured to generate a second sensor signal representative of a concentration of said constituent in coronary venous blood in a second portion of said coronary venous system, or is connectable to said common sensor configured to generate, for said second sensor element, said second sensor signal, and a memory configured to store said first sensor signal and said second sensor signal; and
an ischemic region detector configured to co-process said first sensor signal and said second sensor signal to detect an ischemic region of said heart based on a relation between said first sensor signal and said second sensor signal.
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Abstract
An ischemia detecting system has an implantable medical device connectable to an LV cardiac catheter with sensors for generating sensor signals representative of the concentration of a constituent in coronary venous blood at different sites in the coronary venous system. The sensor signals are co-processed by the system to detect an ischemic region of the subject'"'"'s heart based on a relation between the sensor signals. The detection of the particular ischemic cardiac region is possible by conducting the concentration monitoring on either sides of a branching vein in the coronary venous system and co-processing the sensor signals.
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Citations
20 Claims
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1. An ischemia detecting system comprising:
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an implantable medical device comprising a connector connectable to a left ventricular cardiac catheter comprising at least a first sensor element and a second sensor element arranged on said left ventricular cardiac catheter to be positioned on either side of a branching vein in a coronary venous system of a heart in a subject, said first sensor element constituting a first sensor, configured to generate a first sensor signal representative of a concentration of a constituent in coronary venous blood in a first portion of said coronary venous system, or is connectable to a common sensor configured to generate, for said first sensor element, said first sensor signal, and said second sensor element constituting a second sensor, configured to generate a second sensor signal representative of a concentration of said constituent in coronary venous blood in a second portion of said coronary venous system, or is connectable to said common sensor configured to generate, for said second sensor element, said second sensor signal, and a memory configured to store said first sensor signal and said second sensor signal; and an ischemic region detector configured to co-process said first sensor signal and said second sensor signal to detect an ischemic region of said heart based on a relation between said first sensor signal and said second sensor signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for detecting ischemia comprising:
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recording a first sensor signal representative of a concentration of a constituent in coronary venous blood in a first portion of a coronary venous system of a heart in a subject at a site on a first side of a branching vein of said coronary venous system; recording a second sensor signal representative of a concentration of said constituent in coronary venous blood in a second portion of said coronary venous system at a site on a second, opposite side of said branching vein of said coronary venous system; in a computerized processor, co-processing said first sensor signal and said second sensor signal to detect an ischemic region of said heart based on a relation between said first sensor signal and said second sensor signal, and providing an output from said processor in electronic form that includes said ischemic region.
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Specification