Multisensor probe for tissue identification
First Claim
1. A multisensor probe for tissue identification comprising:
- an elongate body having a distal section, a distal tip, and a lumen extending through said elongate body to said distal tip;
an optical scattering and absorption spectroscopy sensor configured to deliver and receive light from said distal tip of said elongate body; and
a position sensor incorporated into said probe and configured to measure the depth said distal tip is inserted into said tissue.
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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 pO2 sensor, 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.
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Citations
51 Claims
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1. A multisensor probe for tissue identification comprising:
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an elongate body having a distal section, a distal tip, and a lumen extending through said elongate body to said distal tip;
an optical scattering and absorption spectroscopy sensor configured to deliver and receive light from said distal tip of said elongate body; and
a position sensor incorporated into said probe and configured to measure the depth said distal tip is inserted into said tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 28, 38, 39, 40, 41, 42, 43, 45, 46, 49)
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23. A multisensor probe for tissue identification, said probe connectable to a controller via a cable, said probe comprising:
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a needle having a distal tip and a lumen extending through said needle to said distal tip; and
a plurality of optical fibers extending from said controller, through said cable, through said lumen, to said distal tip of said needle when said probe is connected to said controller, wherein at least two of said plurality of optical fibers are optical scattering and absorption spectroscopy fiber optics and wherein at least one of said plurality of optical fibers is an OCDR fiber optic, and wherein a position sensor is incorporated into said probe, said position sensor adapted to measure depth the needle is inserted into the tissue. - View Dependent Claims (24, 25, 26, 27, 34, 35, 36, 37, 47, 48)
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29. A tissue detection system comprising:
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a probe, said probe comprising a multisensor needle comprising a plurality of optical fibers, said probe further comprising a position sensor adapted to sense depth of the needle into said tissue; and
a controller configured to deliver and collect light through said plurality of optical fibers wherein at least one of said fibers is utilized as an OCDR sensor configured for measuring backscattered and reflected light as a function of depth into the tissue and wherein at least one said optical fibers is utilized for optical scattering and absorption. - View Dependent Claims (30, 31, 32)
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33. A multisensor probe for tissue identification, said probe connected to a controller via a cable, said probe comprising:
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a handle to manipulate said probe;
a needle joined to said handle, said needle having a distal section, a distal tip and a lumen extending through said needle to said distal tip;
a plurality of optical fibers extending from said controller, through said cable, through said lumen, to said distal tip of said needle;
a sheath slideably disposed around said distal section of said needle, said sheath being retractable into said handle when said distal section of said needle is inserted into said tissue; and
an optical position sensor coupled to said sheath to measure position of said retractable sheath relative to said handle, said position corresponding to the depth of insertion of said needle into said tissue.
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44. A multisensor probe for tissue identification comprising:
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a handle;
an elongate body extending from the handle, said elongate body having a distal section, a distal tip, and a lumen extending through said elongate body to said distal tip;
an optical scattering and absorption spectroscopy sensor configured to deliver and receive light from said distal tip of said elongate body; and
a position sensor incorporated into said handle and configured to measure the depth said distal tip is inserted into said tissue. - View Dependent Claims (50, 51)
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Specification