Intervertebral dosing device and method

摘要

Some embodiments of the invention include a cannulated bone screw including a screw shaft with screw thread, a proximal end, a distal end, and a channel extending through the screw shaft. Some embodiments include an inlet port coupled to the channel and extending through the distal end, and an outlet port coupled to the channel by a curved or angled channel region. In some embodiments, the outlet port extends through the screw shaft and exits a side that is substantially parallel to the shaft longitudinal axis. In some embodiments, the cannulated bone screw can form part of a therapy delivery device. In some embodiments, the outlet port extends through a portion of the screw shaft and exits at the distal end. In some embodiments, the valve includes a plunger with a plunger rod within the screw shaft, and a valve seat for control of fluid flow out of the screw.

主权项

1. A therapy delivery device comprising:
a cannulated bone screw comprising a screw shaft including a screw thread, a proximal end, and a screw distal end including a tip; at least one channel extending through the screw shaft substantially parallel to a longitudinal axis of the screw shaft; at least one inlet port coupled to the at least one channel and extending through the proximal end; at least one outlet port extending through the screw shaft and exiting at the screw distal end; and at least one valve coupled to the at least one channel and configured and arranged to control fluid flow out of the at least one channel wherein the valve comprises a plunger, the plunger comprising a plunger rod positioned within the screw shaft and a plunger first end and a plunger second end and a valve seat coupled to the plunger second end, wherein a wring is coupled to the plunger.