Patent · US Active

Syringe plunger engagement mechanism

US11883636B2 · kind B2 · utility

0Cited by

314References

20Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

SHAHAB TAHERI · Kleinmachnow, DE
Timothy Newing · Hornsby, AU
Grant Karsten · Parramatta, AU
Aiden Salm · Richmond, AU
Han Min Thu · Mandalay, MM

Key dates

Filing date	Feb 25, 2019
Grant date	Jan 30, 2024
Priority date	—
Expiry date	May 3, 2041

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2005/3123
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A fluid injector system has at least one reciprocally operable piston having a piston head, and a plunger engagement mechanism associated with the piston head. The plunger engagement mechanism has a cam sleeve disposed within the piston head and movable relative to the piston head, the cam sleeve having one or more tracks defining a cam surface. The plunger engagement mechanism further has an actuator operatively connected to the cam sleeve for moving the cam sleeve relative to the piston head, and one or more pins disposed within the cam sleeve. The one or more pins are movable within the one or more tracks with movement of the cam sleeve between a first or withdrawn position, wherein the one or more pins are radially withdrawn into the piston head and a second or extended position, wherein the one or more pins protrude radially outward relative to an outer surface of the piston head.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.