MEDICAL DELIVERY DEVICE WITH AXIALLY EXPANDABLE DRIVE MEMBER

A medical delivery device for advancing a piston in a medicament container to expel a medicament. A support structure supports the container and a drive assembly that advances the piston. The drive assembly includes a drive ribbon that can be retracted and extended. The retracted ribbon defines a sp...

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Bibliographic Details
Main Authors MOULTON, Timothy Lee, JUDSON, Jared Alden
Format Patent
LanguageEnglish
French
German
Published 08.11.2023
Subjects
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
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Summary:A medical delivery device for advancing a piston in a medicament container to expel a medicament. A support structure supports the container and a drive assembly that advances the piston. The drive assembly includes a drive ribbon that can be retracted and extended. The retracted ribbon defines a spiral and the extended ribbon defines a helix. The drive ribbon is incrementally moveable between the retracted spiral configuration and extended helical configuration. A mechanical drive rotates the drive ribbon to selectively extend and retract the ribbon. A thrust member having a helical ramp engages a proximal edge of the drive ribbon where it transitions between a spiral and helix. A bearing member at the distal end of the drive ribbon exerts an axial force on the piston when the ribbon is extended.
Bibliography:Application Number: EP20200180758