Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2006-01-24
2006-01-24
Philogene, Pedro (Department: 3732)
Surgery
Instruments
Orthopedic instrumentation
C606S075000, C606S065000, C606S075000, C411S310000, C411S415000
Reexamination Certificate
active
06989014
ABSTRACT:
A screw, driving device, and method are provided for repairing a tissue injury of a patient, such as a meniscal tear in a knee or osteochondritis dissecans. The screw has a root, a distal section having a narrowing cross section toward the distal end, and a thread along at least a portion of the root between the proximal end and the distal end. Along a leading section extending from the distal end, the helical pitch is substantially constant; along a trailing section between the leading section and the root's proximal end, the helical pitch decreases. The substantially constant pitch along the leading section assists in preventing a stripping of the helical section. At the proximal end is a head having a diameter greater than a major root diameter of the central section. The head is for improving the tissue retention characteristics of the screw.
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Fallin Thomas Wade
Justin Daniel F.
Winters Thomas F.
Ethicon Inc.
Philogene Pedro
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