Drug Delivery Device with Front Loading Feature
First Claim
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1. A drug delivery system comprising:
- a cartridge comprising;
a cylindrical body portion with an axially displaceable piston,a distal outlet portion and,coupling structure associated with the outlet portion and adapted to engage corresponding coupling structure on a needle assembly,a needle assembly comprising;
a hollow needle having a distal end adapted to be arranged in fluid communication with the cartridge outlet portion, anda hub comprising coupling structure adapted to engage the cartridge coupling structure in a mounted state in which the hollow needle is arranged in fluid communication with the cartridge outlet portion,a drug delivery device comprising;
a front-loaded cartridge holder assembly adapted to receive and hold a cartridge in a mounted state, comprising;
cartridge holding structure actuatable between;
an open loading state in which a cartridge can be received in a proximal direction and removed in a distal direction, anda closed operational state in which a received cartridge is held in an operational mounted position,the drug delivery system comprising;
blocking structure configured to prevent the cartridge holding structure from being actuated between the closed and the open state when a cartridge with a mounted needle assembly is held in a mounted position.
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Abstract
The invention provides a drug delivery device adapted to receive a cartridge, the cartridge being adapted to receive a needle assembly. The drug delivery device comprises a front-loaded cartridge holder adapted to receive and hold a cartridge in a mounted state and being actuatable between an open loading state and a closed operational state. The drug delivery device is further provided with blocking means configured to prevent the cartridge holder from being actuated between the closed and the open state when a cartridge with a mounted needle assembly is held in a mounted position.
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Citations
13 Claims
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1. A drug delivery system comprising:
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a cartridge comprising; a cylindrical body portion with an axially displaceable piston, a distal outlet portion and, coupling structure associated with the outlet portion and adapted to engage corresponding coupling structure on a needle assembly, a needle assembly comprising; a hollow needle having a distal end adapted to be arranged in fluid communication with the cartridge outlet portion, and a hub comprising coupling structure adapted to engage the cartridge coupling structure in a mounted state in which the hollow needle is arranged in fluid communication with the cartridge outlet portion, a drug delivery device comprising; a front-loaded cartridge holder assembly adapted to receive and hold a cartridge in a mounted state, comprising; cartridge holding structure actuatable between; an open loading state in which a cartridge can be received in a proximal direction and removed in a distal direction, and a closed operational state in which a received cartridge is held in an operational mounted position, the drug delivery system comprising; blocking structure configured to prevent the cartridge holding structure from being actuated between the closed and the open state when a cartridge with a mounted needle assembly is held in a mounted position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of operating a drug delivery system, comprising the steps of:
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providing a drug cartridge having distal coupling structure adapted to engage corresponding coupling structure on a needle assembly, providing a needle assembly having a hub comprising coupling structure adapted to engage the cartridge coupling structure in a mounted state, providing a drug delivery device having a front-loaded cartridge holder comprising cartridge holding structure actuatable between an open loading state in which a cartridge can be received in a proximal direction and removed in a distal direction, and a closed operational state in which a received cartridge is held in an operational mounted position, inserting the drug cartridge in the cartridge holder, actuating the cartridge holding structure from the open state to the closed state, and mounting a needle assembly on the cartridge distal coupling, the mounting of the needle assembly blocking the cartridge holding structure from being actuated from the closed state to the open state when the needle assembly is mounted. - View Dependent Claims (13)
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Specification