Extract and mechanical properties measurement method of bone trabecula and measurement mechanism
Title：
Extract and mechanical properties measurement method of bone trabecula and measurement mechanism
Application Number：
 200710177994
Application Date：
 2007/11/23
Announcement Date：
 2008/04/09
Pub. Date：
Publication Number：
 101158679
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G01N 33/483, G01N 19/00
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Yao Xuefeng, Wang Peng, Lei Yiming, Dai Ruchun
Key Words：
 Extract, mechanical properties, measurement method, bone trabecula, measurement mechanism
Abstract：
 The invention relates to an extracting of a bone trabecula and a test method and a device of mechanical property, which belongs to the biological mechanics experiment technical field. The method comprises: 1. the bone is cut into a plurality of small blocks at the length of the bone trabecula; 2. the marrow in the middle of each small spongy bone block is rejected clearly and the spongy bone structure is only left; 3. a small spongy bone block which has an intact bone trabecula is chosen and the bone trabecula around the intact bone trabecula is cut away; 4. the bone trabecula is stretched and compressed at the direction paralleled with a loading force, and the two ends of the bone trabecula are fixed; 5. the CCD camera is aimed to the bone trabecula so as to lead the picture of the bone trabecula in the CCD to be clear; 6. the displacement of the stretching or compressing of the bone trabecula is controlled; 7. the picture and the load of the bone trabecula in each time quantum are recorded synchronously; 8. the displacement field and the strain field of each load is worked out according to DSCM; namely the poisson ratio of the material and the strain curve of the strain of the bone trabecula can be obtained. The invention can minimize the damage greatly, and lead a plurality of mechanical property parameters to be more correct.
Claim：
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