Systems and methods for guiding an instrument using haptic object with collapsing geometry
First Claim
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1. A method for guiding an instrument, comprising:
- establishing, by a processor associated with a computer, a target axis that comprises a target point;
defining, by the processor, a virtual haptic volume based, at least in part, on the target point and the target axis, the virtual haptic volume comprising an intermediate haptic plane;
determining, by the processor, a position of a reference point of an instrument and an orientation angle of an axis of the instrument relative to a plane normal to the target axis;
determining, by the processor, that at least one of the position of the reference point and the axis of the instrument is not aligned with the target axis;
wherein upon determining that at least one of the position of the reference point and the axis of the instrument is not aligned with the target axis, the intermediate haptic plane prevents the reference point of the instrument from moving towards the target point until the reference point and the axis of the instrument is aligned with the target axis.
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Abstract
A computer-implemented method for guiding an instrument, comprises determining, by a processor associated with a computer, a current orientation angle of an instrument axis relative to a target axis. The method also comprises establishing, by the processor, a haptic boundary associated with the instrument based on the determined orientation angle of the instrument axis relative to the target axis. The haptic boundary is configured to constrain the instrument axis from being moved to an angle substantially greater than the current orientation angle.
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10 Claims
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1. A method for guiding an instrument, comprising:
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establishing, by a processor associated with a computer, a target axis that comprises a target point; defining, by the processor, a virtual haptic volume based, at least in part, on the target point and the target axis, the virtual haptic volume comprising an intermediate haptic plane; determining, by the processor, a position of a reference point of an instrument and an orientation angle of an axis of the instrument relative to a plane normal to the target axis; determining, by the processor, that at least one of the position of the reference point and the axis of the instrument is not aligned with the target axis; wherein upon determining that at least one of the position of the reference point and the axis of the instrument is not aligned with the target axis, the intermediate haptic plane prevents the reference point of the instrument from moving towards the target point until the reference point and the axis of the instrument is aligned with the target axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification