Multisensor probe for tissue identification

Details Multisensor probe for tissue identification Multisensor probe for tissue identification

2011-05-17

2011-05-17

Le, Long V (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S473000, C600S310000

Reexamination Certificate

active

07945312

ABSTRACT:
A multisensor probe for continuous real-time tissue identification. The multisensor probe includes a tissue penetrating needle, a plurality of sensors useful in characterizing tissue and a position sensor to measure the depth of the needle into the tissue being diagnosed. The sensors include but are not limited to an optical scattering and absorption spectroscopy sensor, an optical coherence domain reflectometry sensor, an electrical impedance sensor, a temperature sensor, a pO2sensor, a chemical sensor and other sensors useful in identifying tissue. The sensors may take the form of a plurality of optical fibers extending through said needle. A retractable sheath may be disposed around the distal section of the needle to protect the needle when not in use. The sheath retracts when the probe is inserted into tissue and the position of the sheath relative to the needle may be measured to determine the needle's depth. Systems and methods for tissue identification are also provided.

REFERENCES:
patent: 5437283 (1995-08-01), Ranalletta et al.
patent: 5800350 (1998-09-01), Coppleson et al.
patent: 6014204 (2000-01-01), Prahl et al.
patent: 6047218 (2000-04-01), Whayne et al.
patent: 6384915 (2002-05-01), Everett et al.

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