MULTIFACETED TRACKER DEVICE FOR COMPUTER-ASSISTED SURGERY
First Claim
1. A tracker device of the type being associated with a surgical instrument and being trackable in space by a CAS system such that at least a position of the surgical instrument is calculable, comprising:
- a support adapted to be connected to the surgical instrument;
at least two optical elements mounted to the support in a first pattern so as to be detectable by the CAS system along a first range of visibility; and
at least two other optical elements mounted to the support in a second pattern so as to be detectable by the CAS system along a second range of visibility, with the first range of visibility and the second range of visibility having at most a common portion;
whereby at least a position of the surgical instrument is tracked within the first and the second range of visibility as a function of the detection of any one of the patterns of the optical elements.
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Accused Products
Abstract
A tracker device of the type is associated with a surgical instrument and being trackable in space by a CAS system such that a position of the surgical instrument is calculable. A support is adapted to be connected to the surgical instrument. Optical elements are mounted to the support in a first pattern so as to be detectable by the CAS system along a first range of visibility. Other optical elements are mounted to the support in a second pattern so as to be detectable by the CAS system along a second range of visibility, with the first range of visibility and the second range of visibility having at most a common portion, whereby a position of the surgical instrument is tracked within the first and the second range of visibility as a function of the detection of any one of the patterns of the optical elements.
39 Citations
13 Claims
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1. A tracker device of the type being associated with a surgical instrument and being trackable in space by a CAS system such that at least a position of the surgical instrument is calculable, comprising:
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a support adapted to be connected to the surgical instrument;
at least two optical elements mounted to the support in a first pattern so as to be detectable by the CAS system along a first range of visibility; and
at least two other optical elements mounted to the support in a second pattern so as to be detectable by the CAS system along a second range of visibility, with the first range of visibility and the second range of visibility having at most a common portion;
whereby at least a position of the surgical instrument is tracked within the first and the second range of visibility as a function of the detection of any one of the patterns of the optical elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer-assisted surgery system for tracking surgical instruments during surgery, comprising:
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at least one surgical instrument;
a tracker device secured to the surgical instrument, the tracker device having a first geometrical pattern of optical elements visible along a first range of visibility, and a second geometrical pattern of optical elements visible along a second range of visibility;
a tracking system having;
a sensor unit tracking any one of the geometrical patterns as the instrument is moved with the first range of visibility and/or the second range of visibility;
a database storing geometrical pattern data and instrument/tracker device relation data; and
a position and orientation calculator connected to the sensor unit and to the database to identify the geometrical pattern being tracked from the geometrical pattern data, and to calculate a position and orientation of the tracker device as a function of the tracking of the identified geometrical pattern from the sensor unit;
the tracking system calculating a position and orientation of the instrument as a function of the position and orientation of the tracker device and of the instrument/tracker device relation data. - View Dependent Claims (12, 13)
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Specification