Method and apparatus for surgical navigation
First Claim
1. A navigation system for determining the location of a member relative to an anatomy, comprising:
- a tracking system;
a sensor assembly including;
a sensor and a cap sensor body operable to be sensed by said tracking system; and
a connection portion to interconnect said cap sensor body with the anatomy having;
an anatomy engaging portion that engages the anatomy at a first location;
a body connection portion that extends from the anatomy engaging portion; and
a rotation resisting portion coupled to the anatomy engaging portion that engages the anatomy at a second location different from the first location to resist the rotation of the connection portion relative to the anatomy.
1 Assignment
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Accused Products
Abstract
A surgical navigation system for navigating a region of a patient that may include a non-invasive dynamic reference frame and/or fiducial marker, sensor tipped instruments, and isolator circuits. The dynamic reference frame may be placed on the patient in a precise location for guiding the instruments. The dynamic reference frames may be fixedly placed on the patient. Also the dynamic reference frames may be placed to allow generally natural movements of soft tissue relative to the dynamic reference frames. Also methods are provided to determine positions of the dynamic reference frames. Anatomical landmarks may be determined intra-operatively and without access to the anatomical structure.
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Citations
40 Claims
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1. A navigation system for determining the location of a member relative to an anatomy, comprising:
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a tracking system; a sensor assembly including; a sensor and a cap sensor body operable to be sensed by said tracking system; and a connection portion to interconnect said cap sensor body with the anatomy having; an anatomy engaging portion that engages the anatomy at a first location; a body connection portion that extends from the anatomy engaging portion; and a rotation resisting portion coupled to the anatomy engaging portion that engages the anatomy at a second location different from the first location to resist the rotation of the connection portion relative to the anatomy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A navigation system for determining the location of a member relative to an anatomy, comprising:
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an instrument having a first end and a second end; a working end defined near said second end; a first tracking sensor positioned at said second end near said working end; a second tracking sensor positioned at said second end, said second tracking sensor spaced apart from said first tracking sensor; a tracking system operable to track said first and second tracking sensors; wherein said instrument includes a hollow tube and said first and second tracking sensors extend helically about an outer diameter of said hollow tube at said second end; and a display that displays an icon representative of the working end of the instrument superimposed on an image of the anatomy. - View Dependent Claims (21, 22)
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23. A navigation system for determining the location of a member relative to an anatomy, comprising:
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a non-trackable instrument having a first end and a second end, the instrument defining a bore and having a working end near said second end; a stylet including a plurality of tracking sensors formed helically around an axis of said stylet, said stylet received within the bore such that the stylet extends from the first end to the second end of the instrument and such that said tracking sensors are positioned near said second end; a tracking system operable to track said tracking sensor to thereby determine a location of the working end of the instrument; and wherein said instrument includes a handle at the first end and an interchangeable member that comprises said second end, and each of said handle and said interchangeable member define a bore for receipt of at least a portion of said stylet. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of tracking a tracking sensor with a tracking system to determine the location of a working end of an instrument, comprising:
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positioning a non-trackable cannulated instrument having a first end and a working end relative to an anatomy; slidably inserting a stylet having a plurality of tracking sensors helically wound around an axis of the stylet near a distal end into the cannulated instrument such that the stylet extends from the first end to the working end of the cannulated instrument and such that the plurality of tracking sensors are near the working end of the instrument; tracking the plurality of tracking sensors with the tracking system; determining a location of the plurality of tracking sensors; and determining a location of the working end of the instrument according to the location of the plurality of tracking sensors. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40)
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Specification