Helical osteosynthetic implant
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United States of America Patent
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-
Apr 21, 1998
Grant Date -
N/A
app pub date -
Jan 13, 1997
filing date -
Jan 13, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
An osteosynthetic implant for setting a broken bone. The implant comprises a nail having a plurality of helically twisted blades that share a common helical axis. At least two of the blades define an angle of less than 180.degree. in a plane perpendicular to the helical axis. In a preferred embodiment, one pair of the blades of the nail is tapered towards its proximal portion and another pair has a uniform thickness. The blades are twisted by at least about 30.degree.. A cannulation runs through the center of the nail to receive a guide wire. The nail is slidably engageable to a member that is securable to an elongated portion of the bone, such as a side plate or an intramedullary nail. In a preferred implantation orientation, the proximate portion of the tapered blades is parallel to the elongated portion of the bone, and a proximate portion of the uniform blades is perpendicular thereto.
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