Patent ID: 6213983
Filing Date: 2001-04-10
Classification: A61M

Abstract:
An injection device for injecting a liquid or semi-solid composition into a subject, the device comprising:a hollow housing having a proximal end and distal end, said housing being configured to contain a liquid or semi-solid composition;a hollow needle, said needle affixed to the distal end of the housing and extending longitudinally within said housing;a plunger arranged to slide within the proximal end of the housing; anda hollow sleeve slidably connected to the distal end of the housing and arranged to cover the needle prior to injection and to retract into the housing during injection;wherein the device is configured such that when the sleeve is pressed against the subject, the sleeve retracts into the housing thereby allowing the needle to penetrate into the subject, and when the plunger is pushed into the housing, the composition is pushed from the housing through the needle and into the subject.