Constant force springs can be applied to new type of pen medicine injectors to deliver small but highly accurate doses of medicament.
Drugs can be injected into body with fix speed and quantity by force of springs, making pen medicine injectors compact and easy-to-use.
Constant force springs feature unprecedented repeatability for a system that can consistently and accurately produce extremely short plunger movements with a maximum displacement variation of +/-0.026 mm. It also solves the problem of divergent tolerance of the injector and to meet high-viscous solution requirement.
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