Template assembly for facilitating the placement of interbody fusion devices
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United States of America Patent
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-
Aug 1, 2000
Issued Date -
N/A
app pub date -
Jul 7, 1998
filing date -
Apr 24, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A template assembly is provided for marking locations on the disc annulus for the implantation of an interbody fusion device or the introduction of a working instrument. The template assembly includes a tubular body sized for percutaneous introduction into a patient and advancement to an affected intervertebral disc. An elongated shaft slidably extends through the tubular body and is threadedly engaged to the handle-mounted thumb wheel so that rotation of the thumb wheel relative to the tubular body retracts the shaft through the body. A guide foot with a rotatable cam near the distal end of the tubular body is operable by the shaft and may be pivoted from a first position aligned with the tubular body to a second deployed position oriented transversely to the tubular body. The guide assembly has an electrocautery projection for marking locations on the disc annulus.
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