Surgical universal positioning block and tool guide
DCFirst Claim
1. A computer assisted total knee replacement surgery system comprising:
- a positioning block including a portion fastenable to a bone element and defining a reference surface thereon, the positioning block including a cutting tool guide operatively engageable with a cutting tool, the cutting tool guide being displaceable relative to the reference surface of said portion of the positioning block in at least three degrees of freedom, the three degrees of freedom comprising two rotational degrees of freedom and one translation degree of freedom;
the positioning block including a trackable member in communication with the computer assisted surgery system, the computer assisted surgery system being operable to determine at least an orientation of the cutting tool guide of the positioning block relative to the bone element based on at least one of a position and orientation of the trackable member in space;
the positioning block, in conjunction with the computer assisted surgery system, being operable to identify at least a desired orientation of the cutting tool guide relative to the bone element, such that at least one of the reference surface and the cutting tool guide is disposed in the desired orientation relative to the bone element whereby the cutting tool, guided by the cutting tool guide, is operable to create a cut in the bone element at the desired orientation; and
a display for indicating when the desired orientation of the cutting tool guide is reached, wherein the display indicates actual orientation of the cutting tool guide and indicates when the desired orientation of the cutting tool guide is reached.
2 Assignments
Litigations
1 Petition
Accused Products
Abstract
A positioning block (10) for use in total knee replacement surgery, permitting five degrees-of-freedom movement relative to a bone element (39) to which it is fixed. The positioning block (10) comprises a rotational mounting element (14) that is removably engaged to the bone element such that the mounting element (14) is selectively rotatable relative to the bone element, about three substantially perpendicular axes of rotation. A guide body portion (12) is engaged with the mounting element (14) such that it is translatable relative thereto along a proximal-distal axis (43) and an anterior-posterior axis (47), while being rotationally fixed relative to the mounting element (14) such that the guide body portion (12) and the mounting element (14) rotate together relative to the bone element (39).
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Citations
9 Claims
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1. A computer assisted total knee replacement surgery system comprising:
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a positioning block including a portion fastenable to a bone element and defining a reference surface thereon, the positioning block including a cutting tool guide operatively engageable with a cutting tool, the cutting tool guide being displaceable relative to the reference surface of said portion of the positioning block in at least three degrees of freedom, the three degrees of freedom comprising two rotational degrees of freedom and one translation degree of freedom; the positioning block including a trackable member in communication with the computer assisted surgery system, the computer assisted surgery system being operable to determine at least an orientation of the cutting tool guide of the positioning block relative to the bone element based on at least one of a position and orientation of the trackable member in space; the positioning block, in conjunction with the computer assisted surgery system, being operable to identify at least a desired orientation of the cutting tool guide relative to the bone element, such that at least one of the reference surface and the cutting tool guide is disposed in the desired orientation relative to the bone element whereby the cutting tool, guided by the cutting tool guide, is operable to create a cut in the bone element at the desired orientation; and
a display for indicating when the desired orientation of the cutting tool guide is reached, wherein the display indicates actual orientation of the cutting tool guide and indicates when the desired orientation of the cutting tool guide is reached. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification