초록 ▼

An injector is provided for automatic placement of a subcutaneous infusion set or the like used for delivering a selected medication to a patient. The injector comprises a spring-loaded plunger having a head for receiving and supporting an infusion set in a position for placement of an insertion nee

An injector is provided for automatic placement of a subcutaneous infusion set or the like used for delivering a selected medication to a patient. The injector comprises a spring-loaded plunger having a head 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 includes a safety lock mechanism for engaging and retaining the infusion set during spring-loaded advancement with a controlled force and speed toward the patient's skin to transcutaneously place the insertion needle and cannula. When the plunger head reaches a fully advanced position, with the infusion set placed on the patient, the infusion set is releasible from the safety lock mechanism with minimal force to permit quick and easy separation of the injector.

대표청구항 ▼

[ What is claimed is:] [1.] An injector for transcutaneously placing a medical needle through the skin of a patient, comprising:a barrel having an elongated bore formed therein;a plunger slidably received within said barrel for movement between an advanced position and a retracted position, said plu

[ What is claimed is:] [1.] An injector for transcutaneously placing a medical needle through the skin of a patient, comprising:a barrel having an elongated bore formed therein;a plunger slidably received within said barrel for movement between an advanced position and a retracted position, said plunger including means for receiving and supporting the medical needle in a position for transcutaneous placement upon movement of said plunger from said retracted position to said advanced position;spring means for urging said plunger toward said advanced position; andtrigger means for releasibly retaining said plunger in said retracted position, said trigger means being operable to release said plunger for spring-loaded movement with a controlled force and speed toward said advanced position;said means for receiving and supporting the medical needle including safety retainer means for retaining the medical needle on said plunger when said plunger is moved from said retracted position to said advanced position, said retainer means permitting separation of the medical needle from said plunger when said plunger is in the advanced position.