Medical delivery device having air shot means

An air shot or priming mechanism for an injection pen. The injection pen comprises a cartridge-holder and a housing. The cartridge-holder interacts with a nut-member capable of driving the piston rod forward when relatively rotated. The cartridge-holder is rotational coupled to the housing such that...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: THØGERSEN KLAUS, BÜLOW MARTIN VON, GROTH LARS MØRCH, MILLER THOMAS DEDENROTH
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:An air shot or priming mechanism for an injection pen. The injection pen comprises a cartridge-holder and a housing. The cartridge-holder interacts with a nut-member capable of driving the piston rod forward when relatively rotated. The cartridge-holder is rotational coupled to the housing such that rotation of the cartridge-holder relatively to the housing causes the nut-member and the piston rod to rotate relatively, thus the relative angular rotation between the cartridge-holder and the housing determines the size of the air shot so performed.