Telescoping plunger assembly
AssigneeGlobus Medical, Inc.
InventorsRoy B. Bogert, James W. Nelson
Life of this patent
Estimating the term…
Abstract
A bone filler mixing and delivery device includes a mixing section adapted to mix components to form bone filler. A syringe barrel is coupled to the mixing section and has an opening through which the bone filler can be dispensed. A controllable portal can be manipulated to open a flow path between the mixing section and the syringe barrel. A plunger assembly is adapted to extend telescopically in an axial direction through the syringe barrel to dispense the bone filler through the opening.
Claims20
A method of delivering a bone filler with a mixing and delivery device comprising:
- a mixing section;
- a syringe barrel coupled to the mixing section;
- a plunger assembly comprising a plunger shaft having a longitudinal slot and a support sleeve positioned over the plunger shaft;
- a pin member extending radially through at least one hole in the support sleeve toward the plunger shaft and engaging the longitudinal slot,
- wherein when the plunger shaft moves in a first direction, the pin member translates along the longitudinal slot and drags the support sleeve in the same direction, and
- wherein the pin member that extends from the support sleeve to engage the longitudinal slot prevents the plunder shaft from rotating about the axis,
- the method comprising:
- mixing one or more components in the mixing section to form a bone filler;
- and
- dispensing the bone filler from an opening in the syringe barrel by extending the plunger assembly telescopically in an axial direction through the syringe barrel.
A method of delivering a material with a material delivery device comprising a syringe barrel;
- an access portal;
- a plunger assembly comprising a plunger shaft comprising a longitudinal slot and a support sleeve positioned over the plunger shaft;
- and a pin member that extends radially through at least one hole in the support sleeve toward the plunger shaft and engages the longitudinal slot, wherein when the plunger shaft moves in a first direction, the pin member translates along the longitudinal slot and drags the support sleeve in the same direction,
- wherein the pin member that extends from the support sleeve to engage the longitudinal slot prevents the plunder shaft from rotating about the axis,
- the method comprising:
- loading material into the syringe barrel through the access portal;
- and
- dispensing the material from an opening in the syringe barrel by extending the plunger assembly telescopically in an axial direction through the syringe barrel.
Dependencies are inferred from the claim text.