Patent ID: 8932297
Filing Date: 2015-01-13
Classification: A61B

Abstract:
1. A method for treating a vertebral body comprising: providing a bone filler delivery device, the bone filler delivery device comprising a housing having a throughbore, a plunger configured for advancement through the throughbore of the housing, a threaded receiving member configured to releasably engage the plunger, and a tube coupled to the housing; coupling the bone filler delivery device to a cannula, the cannula extending into a cavity in the vertebral body; advancing the plunger through the throughbore by rotating the plunger with the plunger in threaded engagement with the threaded receiving member such that the plunger forces bone filler material from the tube and into the cavity in the vertebral body; disengaging the threaded receiving member from the plunger; and advancing the plunger into the throughbore by axially pushing the plunger with the threaded receiving member disengaged from the plunger such that the plunger forces additional bone filler material from the tube and into the cavity in the vertebral body, wherein the threaded receiving member comprises a body having a bore, wherein the bore comprises a threaded portion and a smooth portion, wherein a spring biases the threaded portion into engagement with the plunger during the step of advancing the plunger into the throughbore by rotating the plunger, and wherein disengaging the threaded receiving member comprises rotating the body about a fulcrum to disengage the threaded portion from the plunger.