Dose delivery device with gearing

In a dose setting mode of a dose delivery device, a dose selector (74) is rotated to turn a nut (16), which thereby moves backwards along a thread (8) of a piston rod (6) through a first axial distance (d1). A gearing mechanism transmits the axial movement of the nut (16) to a connector (20) that mo...

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Bibliographic Details
Main Author MOELLER, CLAUS SCHMIDT
Format Patent
LanguageChinese
English
Published 16.09.2022
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:In a dose setting mode of a dose delivery device, a dose selector (74) is rotated to turn a nut (16), which thereby moves backwards along a thread (8) of a piston rod (6) through a first axial distance (d1). A gearing mechanism transmits the axial movement of the nut (16) to a connector (20) that moves backwards, without rotation, through a second axial distance (d2). In a dose delivery mode of the device, the dose selector (74) is pushed forwards and drives the connector (20) to move forwards through the second axial distance (d2). The gearing mechanism transmits the axial movement of the connector (20) to the nut (16), which pushes the piston rod (6) forwards, without rotation, through the first axial distance (d1). The gearing mechanism comprises a first gear (28) that rotates without axial movement relative to the housing (4) and a second gear (30) that rotates without axial movement relative to the nut (16).
Bibliography:Application Number: TW202211104418