Delivery device for bone cement
AssigneeStryker Instruments
InventorsChristopher M. Tague, Dennis A. Stratton, James G. Walen, Richard F. Huyser
Life of this patent
Estimating the term…
Abstract
A delivery apparatus for injecting cement from a cartridge includes a cradle, a cartridge, a button, and a threaded rod. The cradle has an axial cavity extending therethrough for supporting the cartridge of cement. The cartridge dispensing mechanism is coupled to the cradle. The button includes threads and defines an axial bore. The button is moveable into and out of threaded engagement with the threaded rod. The threaded rod extends into the axial cavity of the cradle.
Claims25
A delivery apparatus for injecting cement from a cartridge, the apparatus comprising:
- a cradle with an axial cavity extending therethrough for supporting the cartridge;
- a cartridge dispensing mechanism coupled to the cradle;
- a threaded rod extending into the axial cavity of the cradle;
- a button defining an axial bore having threads, the button being moveable into and out of threaded engagement with the threaded rod;
- and
- at least one base formed between threads of the button, wherein a top edge of the threads of the threaded rod are in contacting with the base while the button is in threaded engagement with the threaded rod.
A delivery apparatus for injecting cement from a cartridge, comprising:
- a cradle with an axial cavity extending therethrough for supporting the cartridge;
- a cartridge dispensing mechanism coupled to the cradle;
- a threaded rod having threads and extending into the axial cavity of the cradle;
- a button defining an axial bore having threads, the button being moveable into and out of threaded engagement with the threaded rod;
- and,
- a limiting structure for limiting a travel of the button and minimizing friction and pinching between the button and the threaded rod, wherein the limiting structure includes at least one horizontal base formed between threads of the button, wherein a top edge of the threads of the threaded rod are in contact with the horizontal base while the button is in threaded engagement with the threaded rod.
A delivery apparatus for injecting cement from a cartridge, comprising;
- a cradle with an axial cavity extending therethrough for supporting the cartridge;
- a cartridge dispensing mechanism coupled to the cradle;
- a threaded rod having threads and extending into the axial cavity of the cradle;
- a button defining an axial bore having threads, the button being moveable into and out of threaded engagement with the threaded rod;
- and,
- a limiting structure for limiting a travel of the button and minimizing friction and pinching between the button and the threaded rod, wherein the limiting structure includes at least one pin inserted through a bottom of the button between the threads of the button.
Dependencies are inferred from the claim text.