Image-guided surgery system
First Claim
1. An image-guided surgical alignment system for producing a display of the alignment of a surgical instrument with respect to a patient, comprising:
- position measuring means for providing position signals representing positions and/or orientations of the surgical instrument;
an image memory for providing patient images;
a computer responsive to the provided position signals and patient images to supply image signals; and
a video display unit for displaying images in response to the image signals;
wherein the computer is operative to(i) derive a spatial alignment line for the surgical instrument from a target position and an entrance position, the target and entrance positions being specified on a patient image provided by the image memory,(ii) select a spatial starting plane passing through a determined position of an end of the surgical instrument, and(iii) derive a starting point on the alignment line and in the starting plane;
the image signals supplied by the computer being based on a current position of said end of the surgical instrument and information for guiding positioning thereof to the starting point by movement in the starting plane.
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Accused Products
Abstract
An image-guided surgery system is used to show a user, for example a surgeon, a position of a surgical instrument in an operating area in the body of a patient during a surgical operation. The image-guided surgery system includes an alignment system for deriving an alignment line through a target position, for selecting a starting plane through an end of the surgical instrument, for deriving a starting point on the alignment line and in the starting plane, and for reproducing a position of said end and of said starting point relative to one another in the starting plane. For example, the positions of the end and the starting point in the starting plane are reproduced in a guide image.
268 Citations
14 Claims
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1. An image-guided surgical alignment system for producing a display of the alignment of a surgical instrument with respect to a patient, comprising:
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position measuring means for providing position signals representing positions and/or orientations of the surgical instrument; an image memory for providing patient images; a computer responsive to the provided position signals and patient images to supply image signals; and a video display unit for displaying images in response to the image signals; wherein the computer is operative to (i) derive a spatial alignment line for the surgical instrument from a target position and an entrance position, the target and entrance positions being specified on a patient image provided by the image memory, (ii) select a spatial starting plane passing through a determined position of an end of the surgical instrument, and (iii) derive a starting point on the alignment line and in the starting plane; the image signals supplied by the computer being based on a current position of said end of the surgical instrument and information for guiding positioning thereof to the starting point by movement in the starting plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of producing a display of the alignment of a surgical instrument with respect to a patient, comprising:
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determining a current spatial position of the surgical instrument; storing patient images in an image memory; deriving a spatial alignment line for the surgical instrument from a target position and an entrance position, the target and entrance positions being specified on one or more patient images provided by the image memory; selecting a spatial starting plane passing through a determined position of an end of the surgical instrument; deriving a starting point on the alignment line and in the starting plane; and producing on a video display unit a display of the current spatial position of said end of the surgical instrument together with information for guiding positioning thereof to the starting point by movement in the starting plane.
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Specification