INJECTOR FOR A SUBCUTANEOUS INFUSION SET

摘要

An injector (10) is provided for automatic placement of a subcutaneous infusion set or the like used for delivering a selected medication to a patient. The injector (10) comprises a spring loaded plunger (30) having a head (32) for receiving and supporting an infusion set in a position for placement of an insertion needle and related cannula through the skin of a patient at a selected insertion site. The plunger head (32) includes a safety lock mechanism (94) for engaging and retaining the infusion set during spring loaded advancement with a controlled force and speed toward the patient's skin to trans-cutaneously place the insertion needle and cannula. When the plunger head (32) reaches a fully advanced position, with the infusion set placed on the patient, the infusion set is releasible from the safety lock mechanism (94) with minimal force to permit quick and easy separation of the injector (10).