×

Reusable, spring driven autoinjector

  • US 7,381,201 B2
  • Filed: 06/24/2003
  • Issued: 06/03/2008
  • Est. Priority Date: 06/24/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. An autoinjector comprising:

  • a housing;

    a reservoir for containing a medicament in a distal portion of the housing;

    a needle for delivering the medicament;

    a drive mechanism in a proximal portion of the housing, the drive mechanism being capable of exerting a force sufficient to expel the medicament from the reservoir through the needle, the drive mechanism comprising a shape memory alloy drive spring, the shape memory alloy drive spring being formulated to exert a first force when in a martensite phase and a second force, which is larger than the first force, when in an austenite phase, the drive mechanism being capable of being manually re-cocked when the shape memory alloy drive spring is in the martensite phase.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×