Apparatus for Dispensing Medicinal Fluids and Method of Making Same

摘要

A dispensing device and the method of making same for dispensing medicaments to a patient that includes a housing, a first assembly connected to the first end of the housing that includes a body portion, and a penetrating sub-assembly. The first assembly also includes a rate control chip of novel construction that is connected to the penetrating sub-assembly and functions to control the rate of flow of medicinal fluid to the patient. Disposed within the housing is a second assembly that includes a shuttle, a collapsible container carried by the shuttle and a plurality of variable force springs that function to thrust the collapsible container into penetrating engagement with the penetrating member of the penetrating assembly and then to collapse the collapsible container to deliver the medicinal fluid to the patient. Connected to the second end of the housing is a novel third assembly that includes an operating member that functions to controllably move the shuttle forwardly of the housing.

主权项

1. An apparatus for dispensing medicinal fluids to a patient comprising:
(a) A generally cylindrically shaped housing having first and second ends and a longitudinally extending center line; (b) a first assembly connected to said first end of said housing, said first assembly comprising:
(i) a front cover;(ii) a unitary fluidics hub disposed within said front cover, said unitary fluidics hub having a sidewall defining a central bore, a closure wall and a penetrating member connected to said closure wall and extending into said central bore, said penetrating member having a fluid passageway; and(iii) a rate control for controlling the rate of flow of medicinal fluids to the patient, said rate control comprising a spiral micro-channel formed in said closure wall of said unitary fluidics hub, said spiral microchannel having an inlet in communication with said fluid passageway of said penetrating member; (c) a second assembly carried by said housing for movement relative thereto between a first position and a second advanced position, said second assembly comprising:
(i) a threaded shuttle;(ii) a collapsible container carried by said threaded shuttle, said collapsible container including a neck portion having a closure wall pierceable by said penetrating member and having a longitudinal center line aligned with said longitudinal center line of said housing; and(iii) a split connector ring interconnecting said threaded shuttle and said collapsible container, said split connector ring including a plurality of circumferentially spaced, outwardly extending securement legs, removably connected to said threaded shuttle; (d) a first operating assembly operably associated with said second assembly for controlled movement of said second assembly within said housing from said first position to said second advanced position; (e) a second operating assembly operably associated with said second assembly for controllably advancing said second assembly within said housing from said second advanced position to a further advanced position; and (f) a disabling assembly carried by said generally cylindrically shaped housing for preventing operation of said first operating assembly of said second assembly.