Devices for delivering bone filler material and associated methods of use

摘要

Methods and apparatus for treating bones, including, in one or more embodiments, a device for delivering a bone filler material comprising: a housing having a throughbore; a plunger comprising a shaft having external threads, wherein the plunger is configured for advancement through the throughbore of the housing; and a threaded receiving member configured to releasably engage the plunger. Methods for removing an instrument from a vertebral body comprising applying ultrasonic energy to the instrument, wherein a distal end of the instrument is disposed in a cavity in the vertebral body, wherein the cavity contains a filler material; and removing the instrument from the vertebral body.

主权项

1. A device for delivering a bone filler material comprising:
a housing including a body having a throughbore and an upper chamber that intersects the throughbore; a plunger comprising a shaft having external threads, wherein the plunger is configured for advancement through the throughbore of the housing; a receiving member disposed in the upper chamber and configured to releasably engage the plunger; and an actuator rod assembly including an actuator rod and an actuator spring, the actuator rod extending from the upper chamber and the actuator spring disposed over the actuator rod which is configured to engage the receiving member, wherein the receiving member is configured to translate within the upper chamber from an engaged position where the receiving member engages the plunger to a disengaged position where the receiving member is not engaged with the plunger.