Title:
整形外科用ねじ及び方法
Document Type and Number:
Japanese Patent JP4286485
Kind Code:
B2
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.
Inventors:
Justin Daniel F
Foreign Thomas Wade
Winters Thomas F
Foreign Thomas Wade
Winters Thomas F
Application Number:
JP2001572009A
Publication Date:
July 01, 2009
Filing Date:
April 03, 2001
Export Citation:
Assignee:
ETHICON, Inc.
International Classes:
A61B17/58; A61B17/86; F16B33/02; A61B17/00; A61B17/064
Domestic Patent References:
| JP10272142A |
Foreign References:
| WO1995015727A1 | ||||
| US5730744 |
Attorney, Agent or Firm:
Konobu Kato