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:
Oct. 15, 2013
Filed:
Jul. 13, 2007
Klaus Dorawa, Schönkirchen, DE;
Manuel Schwager, Zurich, CH;
Christopher Rast, San Diego, CA (US);
Marcel Aeschlimann, Ligerz, CH;
Philipp Seiler, Arboldswil, CH;
Klaus Dorawa, Schönkirchen, DE;
Manuel Schwager, Zurich, CH;
Christopher Rast, San Diego, CA (US);
Marcel Aeschlimann, Ligerz, CH;
Philipp Seiler, Arboldswil, CH;
Stryker Trauma GmbH, , DE;
Abstract
A device and method for fixation of bone fractures has a bone screw comprising a shank with a threaded end portion, on the outer surface. The screw has a through bore with two bore portions differing in diameter. A step in the diameter is formed between these bore portions and is located within the end of the screw having the thread. This step in diameter can support a metal insert which in turn supports a polymer pin when the latter if pressurized with a sonotrode in the bone screw. Together with an applied ultrasonic vibration the pressure fluidizes the polymer pin and presses the material through holes configured in the wall of the bone screw and into surrounding bone.