Medical screw and method of installation

Details Medical screw and method of installation Medical screw and method of installation

A - Human Necessities

61

B

A61B 17/86 (2006.01) A61B 17/04 (2006.01)

Patent

CA 2417662

A medical screw (100) includes a shaft (102) having a threaded portion (106) and a distal guiding tip (108) for introducing the screw (100) into a pre- drilled implantation site. The threaded portion (106) of the medical screw (100) has a first series of helical threads (114) having a first diameter and a second series (116) of helical threads interleaved with the first series of helical threads and having a second diameter, where the first diameter is different than the second diameter. In addition, the medical screw (100) may have a counter-rotation channel (402) configured to receive bone growth.

Vis médicale (100) comprenant une tige (102) possédant une partie filetée (106) et une pointe de guidage distale (108) servant à introduire la vis (100) dans un site d'implantation percé au préalable. La partie filetée (106) de cette vis médicale (100) possède une première série de filets hélicoïdaux (114) présentant un premier diamètre et une deuxième série (116) de filets hélicoïdaux imbriquée à la première série de filets hélicoïdaux et présentant un deuxième diamètre, le premier diamètre étant différent du deuxième diamètre. De plus, cette vis médicale (100) peut comporter un canal de contre-rotation (402) conçu pour recevoir la croissance osseuse.

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