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|1. (WO2017176374) AUTOMATIC INJECTION DEVICE HAVING A DRIVE SYSTEM WITH A SHAPE MEMORY SPRING|
|Applicants:||FLEXTRONICS AP, LLC
|Title:||AUTOMATIC INJECTION DEVICE HAVING A DRIVE SYSTEM WITH A SHAPE MEMORY SPRING|
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.