CAS bone reference with articulated support
First Claim
1. A surgical bone reference assembly, adapted for communication with an image guided surgical system, comprising:
- a bone anchor member, engageable to a bone element of a patient such that substantially no relative movement therebetween is possible;
a trackable member comprising a detectable element adapted to be located and tracked in three dimensional space by the image guided surgical system, thereby defining position and movement of the trackable member; and
an adjustable articulated support member linking the trackable member and the bone anchor member, the adjustable articulated support member permitting variable positioning of the trackable member relative to the bone anchor member and being lockable to fix the trackable member in position relative to the bone anchor member.
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Accused Products
Abstract
A surgical bone reference assembly adapted for communication with an image guided surgical system. A bone anchor member is engageable to a bone element of a patient such that substantially no relative movement therebetween is possible. A trackable member comprises a detectable element adapted to be located and tracked in three dimensional space by the image guided surgical system, thereby defining position and movement of the trackable member. An adjustable articulated support member links the trackable member and the bone anchor member, and permits variable positioning of the trackable member relative to the bone anchor member, while being lockable to fix the trackable member in position relative to the bone anchor member.
61 Citations
26 Claims
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1. A surgical bone reference assembly, adapted for communication with an image guided surgical system, comprising:
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a bone anchor member, engageable to a bone element of a patient such that substantially no relative movement therebetween is possible;
a trackable member comprising a detectable element adapted to be located and tracked in three dimensional space by the image guided surgical system, thereby defining position and movement of the trackable member; and
an adjustable articulated support member linking the trackable member and the bone anchor member, the adjustable articulated support member permitting variable positioning of the trackable member relative to the bone anchor member and being lockable to fix the trackable member in position relative to the bone anchor member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for monitoring position and movement of a bone element using an image guided surgical system, comprising the steps of:
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adjusting a trackable member of a bone reference assembly into a desired position and orientation relative to sensing elements of the image guided surgical system, the trackable member having detectable elements being locatable and trackable in three dimensional space by the image guided surgical system,;
locking an adjustable articulated support member such that the trackable member is fixed in the desired position, the adjustable articulated support member linking the trackable member to a bone anchor member adapted to be fastened to the bone element;
performing a registration of the bone element; and
locating and tracking the bone element using the image guided surgical system. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A computer assisted surgical system capable of locating and tracking a bone element in three dimensional space, comprising:
- a bone reference assembly having a trackable member being communicable with at least a sensing element of the system;
an anchor member fastenable to the bone element;
an articulated support member linking the trackable member to the anchor member; and
means for determining a preferred position of the trackable member relative to the sensing element of the system. - View Dependent Claims (21, 22, 23, 24, 25, 26)
- a bone reference assembly having a trackable member being communicable with at least a sensing element of the system;
Specification