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.
Patent No.:
Date of Patent:
Mar. 20, 2001
Filed:
Jan. 07, 2000
Applicant:
Inventor:
Per Helland, Paradis, NO;
Assignee:
Prototech AS, Fantoft, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F 2/36 ;
U.S. Cl.
CPC ...
A61F 2/36 ;
Abstract
The invention relates to a distraction apparatus for holding a fracture during the healing process. The apparatus includes screws or pins for insertion into a bone at points proximal and distal relative to a fracture site, and a pair of springs which can be connected externally between the screws or pins at spaced positions thereon. The springs act as an extension spring and a compression spring respectively between the screws or pins. The invention is characterized in that the springs are connected at the spaced positions at such distances relative to the bone that the springs will exert moments of force in order to obtain a desired torque load at the fracture site.