The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2003
Filed:
Oct. 04, 2001
Lars Peter Klitmose, Gentofte, DK;
Novo Nordisk A/S, Bagsvaerd, DK;
Abstract
The invention relates to: A portable medication delivery device ( ) comprising a medication cartridge ( ) having an outlet ( ) and a movable piston ( ), and a housing ( ) for holding said cartridge, and a flexible piston rod ( ) being operable to engage and displace said piston along an axis ( ) of said cartridge, and guiding means ( ) for bending said piston rod away from said axis, and actuating means ( ), and driving means ( ) for transferring movement from said actuating means to said piston rod, said driving means including a driving wheel ( ) for displacing the piston rod ( ), said flexible piston rod comprising regularly spaced first members ( ) adapted to mechanically cooperate with corresponding second members ( ) on said driving wheel. The object of the present invention is to provide a medication delivery system that combines compactness with an improved accuracy. The problem is solved in that said flexible piston rod ( ) exhibits a linear or approximately linear path between said driving wheel ( ) and said piston ( ). This has the advantage of yielding a compact, low-weight device with an improved dose accuracy. The invention may e.g. be used in injection or infusion devices for a person's self-treatment of a disease such as diabetes.