Screw for device for coaptation of bone fragments or parts...

Details Screw for device for coaptation of bone fragments or parts... Screw for device for coaptation of bone fragments or parts...

A - Human Necessities

61

B

A61B 17/86 (2006.01) A61B 17/80 (2006.01)

Patent

CA 2581537

The invention concerns an osteosynthesis screw for a device for coaptation of bone fragments or parts using compression effect, comprising a distal portion (2) provided with a cylindrical thread, a proximal portion or head (3) provided with a conical tapped thread and an intermediate smooth section (4) arranged between said distal (2) and proximal (3) portions. The invention is characterized in that said intermediate smooth section (4) consists of a series of mutually tangent circular smooth surfaces (S1, S2, S3).

Vis d'ostéosynthèse pour dispositif de coaptation de fragments ou parties d'os utilisant un effet de compression, comportant une partie distale (2) pourvue d'un filetage cylindrique, une partie proximale ou tête (3) dotée d'un filetage taraudeur conique et un tronçon lisse intermédiaire (4) disposé entre ces parties distale (2) et proximale (3), caractérisée en ce que ledit tronçon lisse intermédiaire (4) est constitué par une succession de surfaces lisses de révolution (S1, S2, S3) tangentes les unes aux autres.

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