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US 12,551,626 B2Granted
Needle-free delivery
AssigneeAvaxmed Limited
InventorsOwen Ryan, Pascal Launois, David Grant
Life of this patent
Estimating the term…
Abstract
The invention concerns improvements in needle-free devices for delivery of therapeutic and/or prophylactic agents, such as solid dose drugs, including vaccines. The needle-free device disclosed herein comprises novel structural arrangements and modes of actuation and operation, resulting in enhanced functionality and benefits to the user and/or patient.
Claims18
A needle-free device for the delivery of at least one therapeutic and/or prophylactic agent comprising a housing having:
- a rear-end including a force generator and rear piston;
- a front-end for receipt of a cassette comprising a solid therapeutic and/or prophylactic agent for delivery, the housing comprising a front piston having a central aperture defining an axis, the piston being slidably mounted within the front-end;
- a spindle positioned between the front-end and rear-end and operatively communicating the rear piston with the front-end, the spindle, having a spindle tip, configured to be laterally movable between a position axially aligned with the central aperture and an axially offset position;
- a reset spring seat;
- a reset spring, positioned between reset spring seat and the front piston;
- and
- a spindle retaining element, structurally and functionally configured to exclusively retain the spindle in the axially offset position.
4 more elements
Dependencies are inferred from the claim text.