GAP-MEASURING APPARATUS FOR AN ARTIFICIAL KNEE JOINT

WIPO Patent Application WO/2011/062360

A3

The present invention relates to a gap-measuring apparatus for an artificial knee joint. The gap-measuring apparatus of the present invention comprises: two cylinder housings arranged parallel to each other with a predetermined gap therebetween; pistons movably arranged within the respective cylinder housings; cylinder rods, each of which is mounted on one end of each of the pistons and extends outwardly from the cylinder housing; a tibia plate fixed at the cylinder housings so as to support the tibia of a patient; femur plates fixed at the respective front ends of the cylinder rods so as to support the inner and outer sides of the femur; and windows provided with markings, said windows being made of transparent materials and formed on the respective cylinder housings, and being marked with gradations for measuring the positions of the pistons. According to the present invention, the femur plates tightly contact the femur of the patient with a predetermined force by means of pneumatic pressure or hydraulic pressure, thus enabling an extension gap and a flexion gap to be accurately measured.

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IN YONG (KR)
KWAK DAI SOON (KR)
HAN SEUNG HO (KR)

PCT/KR2010/006313

July 14, 2011

September 15, 2010

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CATHOLIC UNIV IND ACAD COOP (KR)
IN YONG (KR)
KWAK DAI SOON (KR)
HAN SEUNG HO (KR)

G01B21/16; A61B5/103; A61B17/56

JPH0271203U	1990-05-30
CA2116616C	2006-05-16
JPH0686006U	1994-12-13
JPH0415510A	1992-01-20

DANA PATENT LAW FIRM (BYC Bldg. 648-1,Yeoksam-dong, Kangnam-gu, Seoul 135-080, KR)

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