System for tightening an orthopedic set screw at two different torque levels
AssigneeNeo Medical S.A.
InventorVincent Lefauconnier
Life of this patent
Estimating the term…
Abstract
An orthopedic implant kit for tightening a set screw to a head of a pedicle screw for holding a spinal rod to the pedicle screw, the kit including a screw extender for holding the head of the pedicle screw, a set screw driver for engaging with the set screw to threadably tighten the set screw to the head of the pedicle screw, a first torque limiting mechanism for limiting a torque between the set screw driver and the screw extender to a first torque value or a first torque indication mechanism for indicating that the first torque has been reached, and a second torque limiting mechanism for limiting a torque between the set screw driver and the screw extender to a second torque value, the second torque value being higher than the first torque value.
Claims18
An orthopedic implant kit for tightening a set screw to a head of a pedicle screw, the kit comprising:
- a screw extender configured to hold the head of the pedicle screw, the screw extender including an inner threading;
- a set screw driver configured to engage with the set screw to threadably tighten the set screw relative to the head of the pedicle screw, the set screw driver including an outer threading configured to threadably engage with the inner threading of the screw extender to turn or rotate the set screw together with the set screw driver through the screw extender;
- a first torque limiting mechanism configured to limit a torque between the set screw driver and the screw extender to a first torque value, or a first torque indication mechanism configured to indicate that the first torque value has been reached between the set screw driver and the screw extender;
- and
- a second torque limiting mechanism configured to limit a torque between the set screw driver and the screw extender to a second torque value, the second torque value being higher than the first torque value.
A set screw driver for an orthopedic implant kit having a screw extender for tightening a set screw to a head of a pedicle screw, the set screw driver comprising:
- a first torque limiting mechanism for limiting a torque between the set screw driver and the screw extender to a first torque value, or a first torque indication mechanism for indicating that the first torque value has been reached between the set screw driver and the screw extender;
- a second torque limiting mechanism for limiting a torque between the set screw driver and the screw extender to a second torque value, the second torque value being higher than the first torque value;
- and
- an outer threading configured to threadably engage with inner threading of the screw extender to turn or rotate the set screw together with the set screw driver through the screw extender.
Dependencies are inferred from the claim text.