Source: http://www.google.com/patents/US7899515?dq=5311516
Timestamp: 2014-07-25 15:13:40
Document Index: 394693998

Matched Legal Cases: ['Application No. 60', 'Application No. 06700052', 'Application No. 06728196', 'Application No. 06728196', 'Application No. 02795418', 'Application No. 02795418', 'Application No. 668', 'Application No. 200680019026', 'Application No. 173231', 'Application No. 200680019026', 'Application No. 668', 'Application No. 06728196', 'Application No. 200680006513', 'Application No. 02795418', 'Application No. 02795418', 'Application No. 06700052', 'Application No. 06728196', 'Application No. 06700052', 'Application No. 2006', 'Application No. 200680019026', 'Application No. 20068006513', 'Application No. 2003']

Patent US7899515 - Electromagnetic sensors for tissue characterization - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsA sensor for tissue characterization is provided, comprising: a resonator, configured to be placed proximally to an edge of a tissue for characterization, without penetrating the tissue, the resonator comprising a conductive structure associated with a diameter-equivalent dimension D, in a plane substantially...http://www.google.com/patents/US7899515?utm_source=gb-gplus-sharePatent US7899515 - Electromagnetic sensors for tissue characterizationAdvanced Patent SearchPublication numberUS7899515 B2Publication typeGrantApplication numberUS 11/887,571PCT numberPCT/IL2006/000392Publication dateMar 1, 2011Filing dateMar 29, 2006Priority dateMar 29, 2005Also published asCA2603025A1, CA2603025C, CN101184435A, CN101184435B, CN101991415A, CN101991415B, EP1890596A2, EP1890596A4, EP1890596B1, US20090062637, WO2006103665A2, WO2006103665A3, WO2006103665A9Publication number11887571, 887571, PCT/2006/392, PCT/IL/2006/000392, PCT/IL/2006/00392, PCT/IL/6/000392, PCT/IL/6/00392, PCT/IL2006/000392, PCT/IL2006/00392, PCT/IL2006000392, PCT/IL200600392, PCT/IL6/000392, PCT/IL6/00392, PCT/IL6000392, PCT/IL600392, US 7899515 B2, US 7899515B2, US-B2-7899515, US7899515 B2, US7899515B2InventorsDan Hashimshony, Gil Cohen, Iddo GeltnerOriginal AssigneeDune Medical Devices Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (99), Non-Patent Citations (71), Classifications (7), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetElectromagnetic sensors for tissue characterizationUS 7899515 B2Abstract A sensor for tissue characterization is provided, comprising: a resonator, configured to be placed proximally to an edge of a tissue for characterization, without penetrating the tissue, the resonator comprising a conductive structure associated with a diameter-equivalent dimension D, in a plane substantially parallel with the edge, and with a feature size d; and at least one conductive lead, for providing communication with an external system, wherein the resonator is configured to resonate at a frequency which corresponds to a free-air wavelength range of between about lambda and about 40 lambda, wherein lambda is at least about ten times the diameter-equivalent D, and wherein upon receiving a signal in the range of between about lambda and about 40 lambda, the sensor is configured to induce electric and magnetic fields, in a near zone, in the tissue, the near zone having a diameter of about D, so that the tissue in the near zone effectively functions as part of the resonator, influencing its resonating values, and so the tissue in the near zone is thereby characterized by its electromagnetic properties, by the resonating response of the resonator.
RELATED APPLICATIONS This application is a National Phase of PCT Patent Application No. PCT/IL2006/000392 having International Filing Date of Mar. 29, 2006, which claims the benefit of U.S. Provisional Patent Application No. 60/665,842 filed on Mar. 29, 2005. The contents of the above Applications are all incorporated herein by reference.
FIELD OF THE INVENTION The present invention relates to a method and apparatus for tissue characterization, by resonance of reflected electromagnetic wave signals.
BACKGROUND OF THE INVENTION Tissue characterization by its electromagnetic reflective properties, for differentiating between tissue types, is known. In general it involves the propagation of an electromagnetic wave at about the microwave range, in a coaxial cable, from an electromagnetic-wave generator to the tissue to be characterized. At the proximal end with respect to the tissue, the coaxial cable may be cut and brought in contact with the tissue. Alternatively, various geometries may be provided, as coaxial endings, operative as a tissue probes.
SUMMARY OF THE INVENTION The present invention relates to a sensor for tissue characterization, comprising: a resonator, configured to be placed proximally to an edge of a tissue for characterization, without penetrating the tissue, the resonator comprising a conductive structure associated with a diameter-equivalent dimension D, in a plane substantially parallel with the edge, and with a feature size d; and at least one conductive lead, for providing communication with an external system, wherein the resonator is configured to resonate at a frequency which corresponds to a free-air wavelength range of between about λ and about 40λ, wherein λ is at least about ten times the diameter-equivalent D, and wherein upon receiving a signal in the range of between about λ and about 40λ, the sensor is configured to induce electric and magnetic fields, in a near zone, in the tissue, the near zone having a diameter of about D, so that the tissue in the near zone effectively functions as part of the resonator, influencing its resonating values, and so the tissue in the near zone is thereby characterized by its electromagnetic properties, by the resonating response of the resonator.
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a sensor for tissue characterization, comprising: a resonator, configured to be placed proximally to an edge of a tissue for characterization, without penetrating the tissue, the resonator comprising a conductive structure associated with a diameter-equivalent dimension D, in a plane substantially parallel with the edge, and with a feature size d; and at least one conductive lead, for providing communication with an external system, wherein the resonator is configured to resonate at a frequency which corresponds to a free-air wavelength range of between about λ and about 40λ, wherein λ is at least about ten times the diameter-equivalent D, and wherein upon receiving a signal in the range of between about λ and about 40λ, the sensor is configured to induce electric and magnetic fields, in a near zone, in the tissue, the near zone having a diameter of about D, so that the tissue in the near zone effectively functions as part of the resonator, influencing its resonating values, and so the tissue in the near zone is thereby characterized by its electromagnetic properties, by the resonating response of the resonator.
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