Image guided surgery system
First Claim
1. An optical position measuring system for an image-guided surgery system, comprising:
- a first marker arrangement;
a detector arrangement for optically determining the position of the first marker arrangement, the detector arrangement normally having an unblocked first line of sight to the first marker arrangement; and
a mirror for establishing an alternative second line of sight between the detector arrangement and the first marker arrangement for providing an alternative optical path between the first marker arrangement and the detector arrangement when the first line of sight is blocked.
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Accused Products
Abstract
The invention relates to an image guided surgery system, having an optical position measuring system which includes a detector arrangement (3) and a marker arrangement (4, 5, 6). In known optical position measuring systems, for example comprising two cameras and three LEDs per marker arrangement, a direct line of sight must continuously exist between the detector arrangement (3) and the marker arrangement (4, 5, 6) in order to ensure reliable and continuous operation of the system and to supply the surgeon continuously with information concerning the current position of an instrument or another part provided with a marker arrangement during the treatment. Blocking of the direct line of sight has a negative effect on the operation of the position measuring system. These drawbacks are avoided according to the invention in that at least one mirror (7) is provided in order to establish an indirect line of sight (5i, 6i) between the detector arrangement (3) and the marker arrangement (4, 5, 6). It is thus ensured that at least one line of sight exists at all times.
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Citations
6 Claims
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1. An optical position measuring system for an image-guided surgery system, comprising:
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a first marker arrangement; a detector arrangement for optically determining the position of the first marker arrangement, the detector arrangement normally having an unblocked first line of sight to the first marker arrangement; and a mirror for establishing an alternative second line of sight between the detector arrangement and the first marker arrangement for providing an alternative optical path between the first marker arrangement and the detector arrangement when the first line of sight is blocked. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification