The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 12, 2010

Filed:

Mar. 02, 2007
Applicants:

Shao-kang Hsueh, Sinyi District, Taipei City 110, TW;

Jen-kun Chang, Yangmei Township, Taoyuan County, TW;

Chen-yu Lung, Taipei, TW;

Inventors:

Shao-Kang Hsueh, Sinyi District, Taipei City 110, TW;

Jen-Kun Chang, Yangmei Township, Taoyuan County, TW;

Chen-Yu Lung, Taipei, TW;

Assignees:

United Orthopedic Corporation, Hsinchu, TW;

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 1/32 (2006.01);
U.S. Cl.
CPC ...
Abstract

An expansion mechanism for minimally invasive lumbar operation has a support member, a plurality of sliders movably assembled on the support member, at least a couple of outside muscle hook members mounted on adjacent sliders, an inside muscle hook member assembled on the slider, and a nerve hook member assembled on the slider. The expansion mechanism for minimally invasive operation makes small incisions and hurts less tissues. Furthermore, the expansion mechanism protects nerve tissues from repeated stirring. Muscles can be drawn apart without the need of removing ligament, obtaining clear and large operation vision.


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