Unicompartmental replacement instrument and method
First Claim
1. A surgical instrument for establishing cutting depth and alignment in a femur, comprising:
- a distal saw drill guide having a receiver portion with at least one aperture adapted to receive a drill and having a reference portion with a planar surface adapted to rest against a distal end of the femur, wherein the reference portion is at substantially a right angle to the receiver portion;
a rod adapter having at least one groove to slideably engage the receiver portion and having at least one aperture; and
a modular alignment rod removably mounted to the aperture of the rod adapter.
7 Assignments
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Accused Products
Abstract
A surgical instrument for establishing and verifying cutting depth and alignment includes a distal saw drill guide, a rod adaptor removably mounted on the distal saw drill guide and a modular alignment rod removably mounted on the rod adaptor. The distal saw drill guide includes pin apertures for receiving a plurality of pins for locating the distal saw drill guide on the distal end of a femur. A distal saw block is mounted on the pins in replacement of the distal saw drill guide the rod adaptor and the alignment rod. A stylus is adjustably attached to a stylus block which is movably mounted on the distal saw block. The rod adaptor and modular alignment rod are movably mounted on the distal saw block in replacement of the stylus and stylus block.
145 Citations
20 Claims
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1. A surgical instrument for establishing cutting depth and alignment in a femur, comprising:
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a distal saw drill guide having a receiver portion with at least one aperture adapted to receive a drill and having a reference portion with a planar surface adapted to rest against a distal end of the femur, wherein the reference portion is at substantially a right angle to the receiver portion;
a rod adapter having at least one groove to slideably engage the receiver portion and having at least one aperture; and
a modular alignment rod removably mounted to the aperture of the rod adapter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A unicompartmental replacement surgical instrument comprising:
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a distal saw drill guide;
a rod adaptor removably mounted on the distal saw drill guide;
a modular alignment rod removably mounted on the rod adaptor;
the distal saw drill guide including pin apertures therein for receiving a plurality of pins for locating the distal saw drill guide;
a distal saw block for mounting on the pins in replacement of the distal saw drill guide, the rod adaptor and the modular alignment rod;
a stylus adjustably mounted on the distal saw block; and
the rod adaptor and modular alignment rod being movably mounted on the distal saw block in replacement of the stylus. - View Dependent Claims (11, 12, 13)
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14. A surgical instrument for establishing and verifying cutting depth and alignment comprising:
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a distal saw drill guide;
a rod adaptor removably mounted on the distal saw drill guide;
a modular alignment rod removably mounted on the rod adaptor;
the distal saw drill guide including pin apertures therein for receiving a plurality of pins for locating the distal saw drill guide for establishing cutting depth and alignment;
a distal saw block for mounting on the pins in replacement of the distal saw drill guide, the rod adaptor and the modular alignment rod;
a stylus adjustably attached to a stylus block, the stylus block being movably mounted on the distal saw block for verifying cutting depth; and
the rod adaptor and modular alignment rod being movably mounted on the distal saw block in replacement of the stylus and stylus block for verifying alignment. - View Dependent Claims (15, 16)
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17. A method of establishing and verifying cutting depth and alignment for bone resection comprising the steps of:
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positioning a distal saw drill guide on an end of a skeletal member;
removably mounting a rod adaptor on the distal saw drill guide;
removably mounting an alignment rod on the rod adaptor so that the rod extends for establishing an alignment with the skeletal member;
locating the distal saw drill guide on the end of the skeletal member by a plurality of pins for establishing a cutting depth of the end of the skeletal member;
removing the distal saw drill guide, the rod adaptor and the alignment rod;
mounting a distal saw block on the pins in replacement of the distal saw drill guide, the rod adaptor and the alignment rod;
adjustably mounting a stylus on the distal saw block for verifying the cutting depth;
removing the stylus from the distal saw block; and
movably mounting the rod adaptor and the alignment rod on the distal saw block in replacement of the stylus for verifying the alignment of the alignment rod with the skeletal member. - View Dependent Claims (18, 19, 20)
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Specification