Tibial cutting jig
First Claim
1. A tibial cutting jig for use in resection of the tibia of a patient having an intramedullary alignment rod projecting upwardly from the tibial plateau generally along a longitudinal axis of the tibia, said cutting jig comprising:
- a base for reception over the intramedullary rod;
outrigger pins projecting laterally outwardly in opposite directions from said base;
measurement keys for removable mounting onto said outrigger pins, said measurement keys having lower tips at predetermined distances below said base; and
a saw guide depending from said base and including at least one saw guide slot disposed below said lower tips of said measurement keys when said keys are carried by said outrigger pins.
1 Assignment
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Accused Products
Abstract
An improved tibial cutting jig is provided for use in obtaining accurate tibial resection in the course of a total knee prosthesis implantation procedure. The tibial cutting jig includes a base for sliding reception onto an intramedullary alignment rod preinstalled generally along the longitudinal axis of the tibia. The base includes laterally extending outriggers carrying removable measurement keys of selected size for spacing the base above the tibial plateau by a selected dimension. An anterior saw guide depends from the base and is thus positioned relative to the tibial plateau in accordance with the sizes of the measurement keys.
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Citations
13 Claims
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1. A tibial cutting jig for use in resection of the tibia of a patient having an intramedullary alignment rod projecting upwardly from the tibial plateau generally along a longitudinal axis of the tibia, said cutting jig comprising:
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a base for reception over the intramedullary rod; outrigger pins projecting laterally outwardly in opposite directions from said base; measurement keys for removable mounting onto said outrigger pins, said measurement keys having lower tips at predetermined distances below said base; and a saw guide depending from said base and including at least one saw guide slot disposed below said lower tips of said measurement keys when said keys are carried by said outrigger pins. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A tibial cutting jig for use in resection of the tibia of a patient having an intramedullary alignment rod projecting upwardly from the tibial plateau generally along a longitudinal axis of the tibia, said cutting jig comprising:
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a base for reception over the intramedullary rod and including means for releasably locking said base with respect to said intramedullary rod; a pair of outrigger pins projecting laterally outwardly and generally in parallel from each of the laterally opposite sides of said base; a plurality of pairs of measurement keys for removable mounting onto the outrigger pins on said base, each of said keys having a pair of openings formed therein for sliding reception of said pins, and each pair of said measurement keys having lower tips at a predetermined distance below said base, said predetermined distance for each of said pairs of said keys being different from the remaining pairs of said keys; and a saw guide depending from said base on the anterior side thereof and having at least one saw guide slot formed therein at a position disposed below said lower tips of the measurement keys on said outrigger pins, said measurement keys having indicia thereon representing the dimensional spacing between said lower tips and said saw guide slot. - View Dependent Claims (11)
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12. A tibial cutting jig assembly for use in resection of the tibia of a patient, said assembly comprising:
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an intramedullary alignment rod for installation into the tibia to project upwardly therefrom generally along the longitudinal axis of the tibia; a jig base having a vertical bore formed therein for reception over said rod; outrigger means projecting laterally outwardly from opposite lateral sides of said base; saw guide means depending from the anterior side of said base and including at least one saw guide slot formed therein; and key means for removable reception onto said outrigger means and including lower tips for directly contacting the tibia and for spacing said base above the tibia, said key means being provided in different sizes for spacing said base above the tibia by different distances to correspondingly select the vertical position of the saw guide slot relative to the tibia. - View Dependent Claims (13)
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Specification