Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2001-05-29
2003-04-15
Lewis, Ralph A. (Department: 3732)
Surgery
Instruments
Orthopedic instrumentation
C606S067000, C623S023320
Reexamination Certificate
active
06547791
ABSTRACT:
BACKGROUND OF THE INVENTION
The retrograde implantations of medulla nails in the femur and the humerus already are routine osteosynthetic treatments presently. In contrast, the implantation of a medulla nail into the tibia in a retrograde direction has seemed to be impossible as yet because of anatomic and implant-related technical considerations. Therefore, osteosynthetic plates, for example, have been used up to now, particularly for fractures in the proximal region of the tibia.
SUMMARY OF THE INVENTION
From FR-A-2 646 078, a bone nail has become known which also is referred to as a locking nail. The bone nail, which also can be employed as a tibia nail and, for this purpose, has a bent-off portion at its end, exhibits cross-bores in each of the end portions to receive a bone screw. The shank of the bone nail is provided with groves axially parallel thereto and with an axially extending slot in the wall of the hollow nail, which increases the resiliency of the shank altogether.
It is the object of the invention to provide a tibia nail which specifically is suited for retrograde use.
REFERENCES:
patent: 4475545 (1984-10-01), Ender
patent: 4875474 (1989-10-01), Border
patent: 5034013 (1991-07-01), Kyle et al.
patent: 5035397 (1991-07-01), Frigg
patent: 5041115 (1991-08-01), Frigg et al.
patent: 5053035 (1991-10-01), McLaren
patent: 5374235 (1994-12-01), Ahrens
patent: 5713902 (1998-02-01), Friedl
patent: 6123708 (2000-09-01), Kilpela et al.
patent: 6322541 (2001-11-01), Ahrens
patent: 196 19 093 (1997-11-01), None
patent: 2 646 078 (1990-10-01), None
patent: 98 24380 (1998-06-01), None
Bernhard Andreas
Bühren Volker
Gonschorek Oliver
Hofmann Gunther O.
Sutter Lukas
Lerner David Littenberg Krumholz & Mentlik LLP
Lewis Ralph A.
Stryker Trauma - Selzach AG
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