Method and apparatus for less invasive knee resection
First Claim
Patent Images
1. An instrument for guiding a tool relative to a portion of an anatomy, comprising:
- a track member forming a track extending a first length between opposite ends and along a first axis;
a translating member having a first portion to engage said track member such that said translating member is operable to translate relative to said track member at least parallel to said first axis and a guiding portion formed by the translating member to guide the tool relative to the anatomy, the guiding portion having a second length between opposite ends; and
a positioning member operable to associate at least one of said track member or said translating member relative to the anatomy;
wherein said track member is fixed to the anatomy in a track position to allow said guiding portion to translate relative to said track member along a guiding length while guiding the tool relative to the anatomy wherein said guiding length is longer than each of the first and second lengths.
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Abstract
Various method and apparatuses may be used to perform a procedure, such as a resection of a portion of the anatomy for preparation of the implants of a prosthetic. Various resecting member, including saw blades having selected geometries and shapes, can be used to assist in the resection of an anatomy to provide for implantation of a prosthetic. In addition, a cutting block assembly may be used to guide the resecting member. The cutting block assembly may be moveably mounted relative to the portion to be resected.
391 Citations
20 Claims
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1. An instrument for guiding a tool relative to a portion of an anatomy, comprising:
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a track member forming a track extending a first length between opposite ends and along a first axis; a translating member having a first portion to engage said track member such that said translating member is operable to translate relative to said track member at least parallel to said first axis and a guiding portion formed by the translating member to guide the tool relative to the anatomy, the guiding portion having a second length between opposite ends; and a positioning member operable to associate at least one of said track member or said translating member relative to the anatomy; wherein said track member is fixed to the anatomy in a track position to allow said guiding portion to translate relative to said track member along a guiding length while guiding the tool relative to the anatomy wherein said guiding length is longer than each of the first and second lengths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An instrument system for guiding a resection of a selected dimension of a selected portion of an anatomy, comprising:
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a first member fixed relative to the selected portion of the anatomy at a first position; and a second member moveable relative to said selected portion of the anatomy and moveably attached to said first member; wherein said second member defines a guide surface having a dimension less than a dimension to be resected on the selected portion of the anatomy; wherein said second member is operable to move relative to said first member to form a first guide surface at a first location and then move to a second location while said first member remains fixed at said first position to form a second guide surface at the second location; wherein a combined dimension of said first guide surface and said second guide surface at both said first location and said second location is greater than a dimension of either of said first member or said second member. - View Dependent Claims (12, 13, 14, 15)
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16. An instrument for guiding a tool relative to a portion of an anatomy, comprising:
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a track member extending along a first axis and having a first length between a first end and a second end; a translating member having a second length between a first and a second end, said translating member including; a first portion to engage said track member such that said translating member is operable to translate substantially co-axially with said first axis of said track member; and a guiding portion formed as a slot extending through said translating member operable to guide the tool relative to the anatomy substantially parallel with said first axis, said slot having a guide surface defined between first and second guide ends, wherein said first and second lengths are less than a guiding length formed by said guide surface as said guide member moves relative to said track member where the tool is adapted to contact said guide member throughout said guiding length; and a positioning member operable to associate at least one of said track member or said translating member relative to the anatomy, wherein said positioning member includes a rod operable to extend into an intramedullary canal of the anatomy; and a connection member to selectively fix said track member to the anatomy in an associated position at least while the tool is positioned in said guiding portion. - View Dependent Claims (17, 18, 19, 20)
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Specification