Apparatus and method for determining tissue characteristics

G - Physics – 01 – N

Patent

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G01N 15/02 (2006.01) A61B 5/00 (2006.01) A61N 5/06 (2006.01)

Patent

CA 2332833

An apparatus and method embodying the invention include utilizing a device with a limited number of interrogation devices to accomplish a large number of measurements on a target tissue (50). An instrument embodying the invention includes a plurality of detection devices (54) that are arranged in a predetermined pattern on a tissue contacting face of the instrument. The face of the instrument is located adjacent the target tissue (50), and a plurality of tissue characteristic measurement are simultaneously conducted. The detection devices (54) are moved to a new position, preferably without moving the tissue contacting face, and a second plurality of tissue characteristic measurements are simultaneously conducted. By conducting a series of measurements cycles in this manner, the ultimate resolution of the device is increased, while still obtaining a given resolution, which reduces potential cross-talk errors. Further, a plurality of tissue characteristics are simultaneously obtained from locations spaced across the target tissue (50) during each measurement cycle.

L'appareil et le procédé de cette invention utilisent un dispositif muni d'un nombre limité de dispositifs d'interrogation pour effectuer un grand nombre de mesures sur un tissu cible (50). Selon l'invention, un instrument comprend plusieurs dispositifs de détection (54) organisés selon un motif prédéterminé sur une face de l'instrument entrant en contact avec le tissu. La face de l'instrument se trouve près du tissu cible (50), et l'on effectue simultanément plusieurs mesures des caractéristiques du tissu. On déplace ensuite les dispositifs de détection (54) vers une nouvelle position, de préférence sans bouger la face en contact avec le tissu, et l'on procède simultanément à d'autres mesures des caractéristiques du tissu. En effectuant de cette manière une série de cycles de mesure, on augmente la résolution finale du dispositif. En outre, on peut augmenter l'espacement entre les dispositifs de détection tout en préservant une résolution donnée, ce qui réduit les éventuelles erreurs de diaphonie. De plus, on obtient simultanément plusieurs caractéristiques de tissus depuis des endroits répartis sur le tissu cible (50) pendant chaque cycle de mesure.

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