System for determining the position of a medical instrument

Details System for determining the position of a medical instrument System for determining the position of a medical instrument

A - Human Necessities

61

B

A61B 5/00 (2006.01)

Patent

CA 2655805

The invention relates to a system for determining the spatial position and/or orientation of a medical instrument (1), comprising a transmission unit (3) for transmitting electromagnetic radiation (4), at least one localisation element (2) that is arranged on the medical instrument (1) and which captures the electromagnetic radiation (4) transmitted by the transmission unit (3) and produces a localisation signal (5), and an evaluation unit (9) which determines the position and/or orientation of the medical instrument (1) by evaluating the localisation signal (5). The invention is characterised in that said localisation element (2) has a transponder that comprises an antenna (13) and a circuit (12) that is connected to the antenna (13). Said circuit (12) can be excited by the electromagnetic radiation (4) of the transmission unit captured by the antenna (13), such that said transmission unit emits, via the antenna (13), the localisation signal (5) as electromagnetic radiation.

L'invention concerne un système de détermination de la position dans l'espace et/ou de l'orientation d'un instrument médical (1), comprenant : une unité émettrice (3) émettant un rayonnement électromagnétique (4), au moins un élément de localisation (2) disposé sur l'instrument médical (1) et qui reçoit le rayonnement électromagnétique (4) émis par l'unité émettrice (3) et qui produit un signal de localisation (5), et une unité d'évaluation (9) qui détermine la position et/ou l'orientation de l'instrument médical (1) par évaluation dudit signal de localisation (5). L'invention est caractérisée en ce que l'élément de localisation (2) présente un transpondeur qui comprend une antenne (13) et un circuit (12) connecté avec l'antenne (13), et en ce que le circuit (12) peut être activé par le rayonnement électromagnétique (4) de l'unité émettrice (3), reçu via l'antenne (13), de telle façon que ce circuit émette, via l'antenne (13), le signal de localisation (5) en tant que rayonnement électromagnétique.

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