Spinevision Sa

Spinevision

Sofamor S.n.c.

Stephane Bette

Dominique Petit

Muriel Cazin

Jean Saurat

Didier Thibout

A connecting device for spinal osteosynthesis has an osseous anchoring device, a connector that accommodates a joining shaft and is fixed to one end of the anchoring device, and a tightening device for immobilizing the joining shaft. The connecting device is characterized in that the connector is fixed to the anchoring device with the aid of a pin that penetrates the anchoring device and embodies a pivot joint. Furthermore, the device comprises an arrangement for stabilizing the connector relative to the anchoring device when the device is implanted in the patient, the stabilizing arrangement being located on the plane encompassing the shaft and the anchoring device.

Connecting device for spinal osteosynthesis

A connecting assembly for spinal osteosynthesis has a bone anchoring element including a connection zone designed to co-operate with a connecting device. The connecting device comprises in its lower part a spherical shape designed to enable the connecting device to be freely positioned in a connector or in a linking element having a cavity with matching shape, the spherical shape forming a stop element for longitudinal positioning with the connector or with the linking element.

Connecting assembly for spinal osteosynthesis

A connection assembly for spinal osteosynthesis has a bone-anchor having a connection zone intended to cooperate with a connection device, in which the connection device has, in its lower part, a spherical shape in order to permit a free positioning of the connection device in connector. The connector has a cavity of complementary shape to the spherical shape. This spherical shape forms a limit of longitudinal positioning with the connector.

Connection assembly for the field of spinal osteosynthesis and method for using at least one such assembly

Ancillary for spinal osteosynthesis system and process for implanting a spinal osteosynthesis system using the said ancillary

Bone screw for osteosynthesis devices comprising a screwing head and a screw-threaded shank having a transition portion having a variable profile between two shank parts of different profiles. The threading has a constant pitch and a constant outside diameter, and includes cutting crests throughout its length, including in the transition region. According to one method for manufacturing this screw, there are machined on the transition portion of the shank threads of decreasing depth up to the end of this transition region, the threads along the transition portion defining truncated, non-cutting crests. There is removed from the threads on the transition portion a sufficient amount of material for converting the non-cutting crests into sharp, cutting crests. This method provides a screw with bone anchorage capability throughout the length of the thread.

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Paris, France

Stephane Bette