10086145 cites 255 patents.

A method and system are disclosed for driving a plunger in a drug reservoir. In some embodiments, a variable friction element interconnects between a pushing shaft and a wall of the reservoir. For example, rotation of a driving element in a first direction relative to the pushing shaft may advance the pushing shaft in the reservoir. The friction element may have increased friction resistance to rotation of the pushing shaft in the first direction in comparison to frictional resistance to advancing the pushing shaft. For example, the increased friction may result from wedging a radial element between the pushing shaft and the wall of the reservoir.

Title
Rotation resistant friction adapter for plunger driver of drug delivery device
Application Number
15/269248
Publication Number
10086145 (B2)
Application Date
September 19, 2016
Publication Date
October 2, 2018
Inventor
Ran Hezkiahu
Herzliya
IL
Oz Cabiri
Macabim-Reut
IL
Agent
Panitch Schwarze Belisario & Nadel
Assignee
West Pharma Services IL
IL
IPC
A61M 5/31
A61M 5/142
A61M 5/145
A61M 5/315
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