A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/68 (2006.01) A61B 17/72 (2006.01) A61B 17/86 (2006.01) A61B 17/00 (2006.01) A61F 2/00 (2006.01) A61F 2/30 (2006.01)
Patent
CA 2164182
A bone fixation device such as a screw, pin, staple, cable or anchor has a microtextured contact surface to enhance installation or gripping characteristics, preferably by providing directional or anisotropic engagement. A surface texture comprised of patterned microfeatures imparts a roughness or actual mechanical engagement that prevents loosening. In different embodiments the features resemble an array of microbumps or pyramids, or anisotropic features such as rasp teeth, shingles, or slanted cantilevered fiber/rods. The use of microbumps present a smaller surface area when moving, while providing full area contact after the surfaces have relaxed or decompressed; installation may be effected with low force, while high static or resting friction prevents disengagement. Features with directional asymmetry or angled suspension allow the textured surface to slide or deflect when the fixation device moves in one direction, while presenting a high resistance to torque or linear motion when moved in the other direction. Manufacturing is achieved with ion beams or directional treatment with energetic radiation, and regular arrays of the microfeatures may be produced as stationary surface growth phenomena without the use of pattern masks or mechanical contact. One manufacturing apparatus rotates the fixation device about a longitudinal axis while it is irradiated along an oblique axis. A bone pin may have centrally- directed spurs that allow a multi-segment fracture to be securely pinned without threading. An elastic fastener body such as a screw or pin can be pre-tensioned to place the bone under a torsional or compressive load, or introduce strain at the healing site.
Ochoa Jorge A.
Rogers Laurel
Johnson & Johnson Professional Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
LandOfFree
Directional bone fixation device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Directional bone fixation device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Directional bone fixation device will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1828765