Drug Delivery Device with Cartridge Fixation Feature
First Claim
Patent Images
1. A drug delivery system comprising:
- a cartridge comprising;
a cylindrical body portion having opposed distal and proximal portions,an axially displaceable piston arranged in the body portion,a distal outlet portion,a drug-filled variable volume reservoir being provided by the body portion and the piston, andfirst coupling means arranged at the distal portion,a front-loaded cartridge holder adapted to axially receive and hold the cartridge in a loaded position, comprising;
a distal portion with a distal opening adapted to receive the cartridge in a proximal direction, andsecond coupling means arranged at the distal portion,an expelling assembly adapted to engage and axially displace the piston in a loaded cartridge in a distal direction to thereby expel a dose of drug from the cartridge,wherein the first and second coupling means are configured to engage each other to thereby axially lock the received cartridge in the cartridge holder.
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Accused Products
Abstract
Drug delivery system comprising a cartridge with an axially displaceable piston, and a front-loaded cartridge holder adapted to axially receive and hold a cartridge in a loaded position. The cartridge comprises first coupling means arranged at the distal portion, and the cartridge holder comprises second coupling means arranged at the distal portion, wherein the first and second coupling means are configured to engage each other to thereby axially secure a cartridge mounted in the cartridge holder.
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Citations
16 Claims
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1. A drug delivery system comprising:
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a cartridge comprising; a cylindrical body portion having opposed distal and proximal portions, an axially displaceable piston arranged in the body portion, a distal outlet portion, a drug-filled variable volume reservoir being provided by the body portion and the piston, and first coupling means arranged at the distal portion, a front-loaded cartridge holder adapted to axially receive and hold the cartridge in a loaded position, comprising; a distal portion with a distal opening adapted to receive the cartridge in a proximal direction, and second coupling means arranged at the distal portion, an expelling assembly adapted to engage and axially displace the piston in a loaded cartridge in a distal direction to thereby expel a dose of drug from the cartridge, wherein the first and second coupling means are configured to engage each other to thereby axially lock the received cartridge in the cartridge holder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A drug cartridge comprising:
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a cylindrical body portion, an axially displaceable piston, a distal outlet portion, a variable volume reservoir being provided by the body portion and the piston, first coupling means arranged at the distal portion and allowing a needle assembly to be mounted in fluid communication with the reservoir, and second coupling means arranged at the distal portion, allowing the cartridge to be attached to a cartridge holder of a drug delivery device, wherein the first coupling means comprises a thread or a bayonet coupling, and the second coupling means comprises a thread or a bayonet coupling.
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16. A method for attaching a cartridge to a drug delivery system, comprising:
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providing a drug-filled cartridge, providing a front-loaded cartridge holder adapted to axially receive and hold the cartridge in a loaded position, the cartridge holder comprising a distal opening adapted to receive the cartridge in a proximal direction, inserting the cartridge in the cartridge holder, and axially locking the received cartridge in the cartridge holder.
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Specification