Lumbar-sacral implant allowing variable angle fixation
AssigneeKyphon SARL
InventorEric C. Lange
Life of this patent
Estimating the term…
Abstract
Medical devices for the treatment of spinal conditions are described herein. The medical device includes a main body that is adapted to be placed between the L5 vertebra and the sacrum so that the main body acts as a spacer with respect to the L5 vertebra and the sacrum to maintain distraction therebetween when the spine moves in extension. Channels are formed in the lower portion of the main body and allow a fixation device to extend through each channel at different angles. A locking mechanism is disposed in the channels to lock the fixation devices in each channel with respect to the device in a desired orientation.
Claims19
A device, comprising:
- a front face;
- a rear face;
- an upper body portion defining an upper saddle;
- a lower body portion defining a lower saddle;
- the upper body portion separated from the lower body portion;
- the lower body portion including a left lower lobe and a right lower lobe, each lobe being adjacent to an opposite side of the lower saddle;
- a left channel extending through the device in the left lower lobe and a right channel extending through the device in the right lower lobe;
- a left bushing disposed in the left channel and a right bushing disposed in the right channel;
- and
- a left fixation device adapted to extend through the left channel and the left bushing and a right fixation device adapted to extend through the right channel and the right bushing wherein the left fixation device cooperates with the left channel and the left bushing so that an angular orientation of the left fixation device with respect to the implant may be varied and wherein the right fixation device cooperates with the right channel and the right bushing so that an angular orientation of the right fixation device with respect to the implant may be varied.
A device, comprising:
- a front face;
- a rear face;
- an upper body portion defining an upper saddle;
- a lower body portion defining a lower saddle;
- a first channel extending through the device wherein the channel has a first portion that has a varying cross-section that tapers to a waist portion adjacent to a medial portion of the channel;
- and
- a fixation device extending through the passage and the first channel and pivotable about the waist portion such that the trajectory of the fixation device with respect to the device may be adjusted.
A method of implanting a device, comprising:
- locating the device in a desired location;
- extending a fixation element through the device;
- changing the trajectory of the fixation element with respect to the device while the fixation element is extending through the device;
- aligning the fixation element with a desired trajectory;
- and
- locking the trajectory of the fixation element with respect to the device.
Dependencies are inferred from the claim text.