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Publication Number
US-11878147-B2
Publication Date
2024-01-23
Expiration Date
Abstract
A method and system of providing a needle-less injector specifically configured to the needs of a user. The method includes assembling a needle-less injector by positioning an inner housing within the outer housing such that the inner housing is axially movable within the outer housing between a ready position and a firing position. The method further includes receiving a user selection of a delivery spring weight from a plurality of available delivery spring weights. Then a delivery spring having the selected spring weight is placed within the inner housing. The completed needle-less injector having a delivery spring with the selected weigh may then be delivered to the user. In alternative injector configurations, the user may also select one or more of a skin tensioning spring weight or a hammer length along with or instead of the delivery spring weight.
Core Innovation
The invention relates to a hand-held, spring-powered needle-less injector that is assembled and configured to a user’s needs by selecting a delivery spring weight from a plurality of available delivery spring weights. The selected delivery spring weight is positioned within an inner housing of the injector, and the inner housing is positioned within an outer housing such that the inner housing is axially movable between a ready position and a firing position.
In the configured needle-less injector, movement of the inner housing from the ready position to the firing position provides skin pre-tension and enables safe triggering such that triggering is blocked until the firing position. A spring-powered hammer drives a plunger through a disposable syringe/nozzle to eject a high-pressure jet of a fluid medicament for delivery.
The invention further describes that different selected delivery spring weights and, optionally, selectable hammer length tailor injection dose and injection depth without requiring different vial/syringe sizes. It also includes features for preventing accidental discharge and for positioning the nozzle at a right angle using a skin tensioner/installation ring and an optional cocking/carrying device for operation and transport.
Claims Coverage
The provided independent claim coverage centers on configuring a needle-less injector by axially moving an inner housing between ready and firing positions while receiving user input to select a delivery spring weight from a plurality of available delivery spring weights. The selected delivery spring weight is positioned in the inner housing and the injector is delivered to the user.
Axially movable inner housing between ready and firing positions
providing an outer housing; positioning the inner housing within the outer housing such that the inner housing is axially movable within the outer housing between a ready position and a firing position;
User selection of delivery spring weight from plurality of available weights
receiving input from a user selecting a delivery spring weight from a plurality of available delivery spring weights;
Positioning selected delivery spring within inner housing
positioning a delivery spring having the selected delivery spring weight within the inner housing;
Delivering needle-less injector including the delivery spring
delivering to the user the needle-less injector including the delivery spring.
Delivery spring weight selection for intradermal tissue targeting
receiving input from a user selecting a first alternative delivery spring weight from the plurality of available delivery spring weights, wherein the first alternative delivery spring weight is determined to cause an injection into an intradermal tissue layer.
Delivery spring weight selection for intramuscular tissue targeting
receiving input from a user selecting a second alternative delivery spring weight from the plurality of available delivery spring weights, wherein the second alternative delivery spring weight is determined to cause an injection into an intramuscular tissue layer.
Delivery spring weight selection for specific dosage
receiving input from a user selecting a fourth delivery spring weight from the plurality of available delivery spring weights, wherein the fourth alternative delivery spring weight is determined to produce an injection with a specific dosage.
User selection of hammer length
receiving input from a user selecting a hammer length from a plurality of available hammer lengths.
Positioning hammer of selected length in inner housing
positioning a hammer having the selected hammer length within the inner housing;
Indicia on outer housing indicating selected delivery spring weight
placing indicia on an outer housing to indicate the delivery spring weight.
Overall, the claim coverage centers on configuring a needle-less injector by axially moving an inner housing between ready and firing positions while receiving user input to select a delivery spring weight from a plurality of available weights. The selected delivery spring weight is positioned in the inner housing and the injector is delivered to the user, with dependent refinements that tie spring selection to intradermal or intramuscular tissue targeting, or to a specific dosage, and that optionally incorporate user selection of hammer length and indicia on the outer housing.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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