Patent ID: 6036675
Filing Date: 2000-03-14
Classification: A61M,Y10S

Abstract:
A sterile cartridge injector apparatus comprising:a sterile cartridge assembly comprising an elongated syringe housing comprising a first end comprising a penetrable seal which, until penetrated, is impermeable to passage of liquids, a second open end disposed opposite said first end, a volume for containing a bolus of dispensable liquid disposed between the first and second ends and a slideable plunger seal disposed between the volume and the second end;said plunger seal comprising a releasible attachment whereby a plunger rod is temporarily affixed for use in forcing displacement of the plunger seal through the housing to displace the liquid;a sterile cartridge receptacle comprising an elongated cartridge holder wherein said sterile cartridge assembly is reolaceably disposed for use, a proximal end associated with said second open end through which said sterile cartridge assembly is linearly proximally displaceable into the receptacle, said proximal end comprising an abutment which retards proximal displacement of the sterile cartridge assembly toward a user and a distal end associated with said first end;the abutment comprising a hole through which the plunger rod communicates with the plunger seal;the plunger rod member comprising an elongated stem for communicating with the plunger seal through the hole, a distally disposed connector for releasibly affixing the plunger seal to the releasible attachment and a digital interface for facile displacement of the plunger rod relative to the receptacle;the distal end of the sterile cartridge receptacle further comprising at least one distally extending arm which comprises a catch;a needle hub assembly comprising:a medical needle comprising a proximally disposed sharpened tip for penetrating said seal for access to the bolus of dispensable liquid and a distally disposed sharpened tip for percutaneous entry into a patient;a needle hub comprising a latch interface which cooperates with said catch to securely, but releasibly, affix said needle hub assembly to said receptacle for the purpose of retaining the sterile cartridge assembly within the receptacle for the purposes of dispensing liquid therefrom.