VERTEBRAL SPACER

WIPO Patent Application WO/2012/063868

A1

The disclosed vertebral spacer is used by being inserted between one vertebra (101) and another vertebra (102) (the intervertebral space). Said vertebral spacer (1) has a block body (2) which, provided with a pair of contact surfaces contacting each of the vertebrae (101, 102), is configured from titanium or a titanium alloy as the main material. The block body (2) has needle-form bodies (40) forming a needle shape at both ends, and a porous part (21) which, provided with through-holes (22) penetrating in the thickness direction, has at least a surface porosity higher than that of the needle-form body (40). The needle-form bodies (40) are inserted into the through-holes (22) such that both ends of said needle-form bodies protrude from both contact surfaces, and the aforementioned both ends thereby configure protrusions (41) that function to fix the block body (2) between the vertebrae. By this means, the size of the space between the two vertebrae (the intervertebral space) can be properly maintained. Further, damage can be accurately prevented regardless of the clinical case and the position of the intervertebral space, and earlier bone fusion with the vertebrae can be achieved.

MATSUMOTO TOSHIO (JP)
DAIGO YUZO (JP)
OHMORI SHINICHI (JP)
KATO KOMEI (JP)

PCT/JP2011/075841

May 18, 2012

November 09, 2011

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HOYA CORP (JP)
MITSUBISHI MATERIALS CORP (JP)
MATSUMOTO TOSHIO (JP)
DAIGO YUZO (JP)
OHMORI SHINICHI (JP)
KATO KOMEI (JP)

A61F2/44

WO2008026316A1

2008-03-06

US6379385B1	2002-04-30
JP2003230583A	2003-08-19
US20020169066A1	2002-11-14

MASUDA TATSUYA (JP)
Tatsuya Masuda (JP)

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