TRANSESOPHAGEAL OR TRANSTRACHEAL CARDIAC MONITORING BY OPTICAL SPECTROSCOPY
First Claim
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1. A system useable for monitoring a physiological variable in a target tissue or body fluid located within the thorax of a subject by optical spectroscopy, said system comprising:
- an elongate body configured for insertion into the esophagus, trachea or bronchus of the subject;
an optical spectroscopy system which is useable for measuring the physiological variable located on or in the elongate body, said optical spectroscopy system comprising i) an emitter for emitting light in the wavelength range of 200-2500 nm through the wall of the esophagus and into a target tissue or body fluid located in the heart, chamber of the heart or intrathoracic blood vessel and ii) a detector for detecting light that has been emitted from the emitter after said light has undergone dispersion and/or reflection by the target tissue or body fluid; and
a processing device which receives signals from the detector, said processing device being programmed to use signals received from the detector to estimate at least one physiological variable within the target tissue or body fluid.
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Abstract
Devices, systems and methods useable for useable for monitoring a physiological variable in a target tissue or body fluid located within the thorax of a subject by optical spectroscopy.
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Citations
39 Claims
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1. A system useable for monitoring a physiological variable in a target tissue or body fluid located within the thorax of a subject by optical spectroscopy, said system comprising:
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an elongate body configured for insertion into the esophagus, trachea or bronchus of the subject; an optical spectroscopy system which is useable for measuring the physiological variable located on or in the elongate body, said optical spectroscopy system comprising i) an emitter for emitting light in the wavelength range of 200-2500 nm through the wall of the esophagus and into a target tissue or body fluid located in the heart, chamber of the heart or intrathoracic blood vessel and ii) a detector for detecting light that has been emitted from the emitter after said light has undergone dispersion and/or reflection by the target tissue or body fluid; and a processing device which receives signals from the detector, said processing device being programmed to use signals received from the detector to estimate at least one physiological variable within the target tissue or body fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39-77. -77. (canceled)
Specification