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US 7,803,134 B2Granted
Syringe assembly and infusion pump assembly incorporating such
AssigneeAnimas Corporation
InventorsBahram Sharifi, Patrick Paul, William Lawson, IV
Life of this patent
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Abstract
A syringe assembly for use with an infusion pump having a drive piston. The syringe assembly comprises a substantially hollow syringe housing and a plunger axially movable within the syringe housing to dispense a fluid therefrom. The plunger has a body with a portion thereof configured to engage a radially elastic member associated with the drive piston such that the plunger is releasably axially secured relative to the drive piston.
Claims7
An infusion pump assembly comprising:
- an insulin pump including a drive piston having a radially elastic member associated therewith;
- a syringe assembly including a substantially hollow syringe housing and a plunger axially movable within the syringe housing to expel a fluid therefrom, the plunger having a body with a portion configured to engage the radially elastic member associated with the drive piston such that the plunger is releasably axially secured relative to the drive piston;
- and
- wherein the plunger body includes a first annular groove configured to receive a portion of the radially elastic member and the drive piston includes a second annular groove configured to receive a portion of the radially elastic member and at least a portion of the plunger body is configured to be received within a portion of the drive piston and the first annular groove is an exterior groove and the second annular groove is an internal groove.
1 more element
Dependencies are inferred from the claim text.