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1. (WO2017176374) AUTOMATIC INJECTION DEVICE HAVING A DRIVE SYSTEM WITH A SHAPE MEMORY SPRING

Pub. No.:    WO/2017/176374    International Application No.:    PCT/US2017/018478
Publication Date: Fri Oct 13 01:59:59 CEST 2017 International Filing Date: Sat Feb 18 00:59:59 CET 2017
IPC: A61M 5/315
F03G 7/06
A61M 5/20
A61M 5/44
Applicants: FLEXTRONICS AP, LLC
Inventors: BARMAIMON, Eyal
SHTRAM, Lior
KALISCH, Boaz
BELLAN, Ronny
COHEN Nadav
FINKMAN, Shai
MEROM, Nadav
Title: AUTOMATIC INJECTION DEVICE HAVING A DRIVE SYSTEM WITH A SHAPE MEMORY SPRING
Abstract:
An automatic injection device has an insertion needle configured to be inserted into a patient and a drug container which contains a pharmaceutical product and includes a plunger. The automatic injection device also has a fluid path which fluidly connects the drug container to the insertion needle, and a drive system configured to cause linear movement of the plunger to force the pharmaceutical product into the fluid path. The drive system has a movable element. The movable element has a shape memory alloy and is configured to change shape to move the plunger.