Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2001-09-20
2003-11-04
Philogene, Pedro (Department: 3732)
Surgery
Instruments
Orthopedic instrumentation
Reexamination Certificate
active
06641584
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a hook cable used for a fixing method with respect to an atlantoaxial joint unstable symptom between a first cervical vertebra (an atlanto) and a second cervical vertebra (an epistropheus), and a system for fixing the same.
2. Description of Related Art
As a method of fixing an atlantoaxial joint between an atlanto (a first cervical vertebra)
1
and an epistropheus (a second cervical vertebra)
3
, for example, as shown in
FIGS. 1A and 1B
, there is executed a method of obliquely screwing and inserting a pair of right and left screws
9
to lateral roots
7
of the atlanto
1
from an inferior articular process
5
of the epistropheus
3
, aligning right and left autologous bones
15
between an arcus posterior
11
of the atlanto
1
and an arcus vertebrae
13
of the epistropheus
3
, and fastening the arcus posterior
11
and the arcus vertebrae
13
by a titanium wire
17
.
As described above, in the related art, since it is necessary to wind the titanium wire
17
around the arcus posterior
11
of the atlanto
1
and the arcus vertebrae
13
of the epistropheus
3
, it is hard to perform the winding operation, and since it is necessary to pay attention so as to prevent such as a bone resection loss or a breakage of the titanium wire
17
from being generated at a time of fastening the titanium wire
17
, there is a problem that it is necessary to pay attention to the fastening operation.
SUMMARY OF THE INVENTION
The present invention is made by taking the problem as described above into consideration. According to a first aspect of the present invention, there is provided a hook cable provided with a hook for hooking to an arcus posterior in an atlanto, wherein a cable which can freely bend is integrally provided in a base portion of the hook.
In the hook cable as described in the first aspect, the structure is made such that the hook is provided with a projection on a surface hooked to the arcus posterior.
According to a third aspect of the present invention, there is provided a system for fixing an atlantoaxial joint, in which a screw hole is provided in a head portion of a screw freely inserting to an atlanto from an epistropheus, an engagement groove communicated with the screw hole is provided, a cable provided in a hook freely hooked to an arcus posterior in the atlanto is provided so as to be freely engaged with the engagement groove, and a fixing screw freely fixing the cable engaged with the engagement groove is provided so as to be freely meshed with the screw hole. The structure is made such that a screw portion is provided in an inserting direction of the screw, and a guide hole is provided in an axial core of the screw.
REFERENCES:
patent: 4047523 (1977-09-01), Hall
patent: 4635953 (1987-01-01), Robertson et al.
patent: 4974992 (1990-12-01), Harter
patent: 5306275 (1994-04-01), Bryan
patent: 5395370 (1995-03-01), Müller et al.
patent: 5395371 (1995-03-01), Miller et al.
patent: 5498262 (1996-03-01), Bryan
patent: 5520689 (1996-05-01), Schläpfer et al.
patent: 5653708 (1997-08-01), Howland
patent: 5676084 (1997-10-01), Palmer et al.
patent: 5725527 (1998-03-01), Biedermann et al.
patent: 5725582 (1998-03-01), Bevan et al.
patent: 5810817 (1998-09-01), Roussouly et al.
patent: 5947965 (1999-09-01), Bryan
patent: 6077262 (2000-06-01), Schläpfer et al.
patent: 6077263 (2000-06-01), Ameil et al.
patent: 743045 (1996-11-01), None
patent: WO 95/06440 (1995-03-01), None
patent: WO 98/41160 (1998-09-01), None
Hashimoto Tomoyuki
Ina Noriyuki
Miyaura Futoshi
Oribe Kazuya
Greenblum & Bernstein P.L.C.
Philogene Pedro
Showa Ika Kohgyo Co., Ltd.
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