Drug Delivery Device with Piston Rod Carrying Dose Markings
First Claim
1. A drug delivery device comprising:
- a housing with a proximal end and a distal end,a cartridge holder adapted to retain a cartridge, the cartridge holder comprising an at least partially transparent side wall,a piston rod, the piston rod being adapted to drive a piston so as to engage the piston into the cartridge, anda plurality of symbols on the piston rod, the symbols representing dosage information during operation of the drug delivery device and being visible through a window aperture in the housing or in the cartridge holder.
1 Assignment
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Accused Products
Abstract
The present invention relates to a drug delivery (5) comprising a housing (10) with a proximal end (30) and a distal end (22), a cartridge holder (14) adapted to retain a cartridge (16), the cartridge holder (14) comprising an at least partially transparent side wall (36), a piston rod (26), the piston rod (26) being adapted to drive a piston so as to engage the piston (28) into the cartridge (16), and
a plurality of symbols (32) on the piston rod (26), the symbols (32) representing dosage information during operation of the drug delivery device (5) and being visible through a window aperture (40) in the housing (10) or in the cartridge holder (14). Furthermore, using a plurality of symbols (32) on a piston rod (26) to represent dosage information during operation of the drug delivery device (5) is disclosed.
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Citations
20 Claims
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1. A drug delivery device comprising:
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a housing with a proximal end and a distal end, a cartridge holder adapted to retain a cartridge, the cartridge holder comprising an at least partially transparent side wall, a piston rod, the piston rod being adapted to drive a piston so as to engage the piston into the cartridge, and a plurality of symbols on the piston rod, the symbols representing dosage information during operation of the drug delivery device and being visible through a window aperture in the housing or in the cartridge holder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. Using a plurality of symbols on a piston rod to represent dosage information during operation of the drug delivery device by being visible through a window aperture in the housing, wherein the symbols on a piston rod are rendered at least partially unreadable through an at least partially transparent side wall of a cartridge holder.
Specification