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US 2014/0155828 A1Published application
Prefilled syringe jet injector
AssigneeAntares Pharma, Inc.
InventorPaul R. Lesch, JR.
Life of this patent
Estimating the term…
Abstract
A jet injector that includes a prefilled syringe. The syringe includes a fluid chamber that contains a medicament. The syringe also has an injection-assisting needle, and a plunger is movable within the fluid chamber. A housing is configured for allowing insertion of the needle to a penetration depth. An energy source is configured for biasing the plunger to produce an injecting pressure in the medicament in the fluid chamber of between about 80 and 1000 p.s.i. to jet inject the medicament from the fluid chamber through the needle to an injection site.
Claims23
1-22. (canceled)
A jet injector, comprising:
- a prefilled syringe comprising:
- a container portion defining a fluid chamber containing a medicament,
- an injection-assisting needle disposed at a distal end of the fluid chamber, the injection-assisting needle having an injection tip configured for piercing an insertion location, and defining a fluid pathway in fluid communication with the fluid chamber for injecting the medicament from the fluid chamber into an injection site,
- wherein the injection-assisting needle is adhered to the container portion,
- a syringe body that includes a flange and a wall and hub of unitary construction, and
- a plunger movable within the fluid chamber,
- a housing that houses the prefilled syringe and is configured for allowing insertion of the injection-assisting needle at the injection location to an insertion point that is at a penetration depth below a surface at the insertion location;
- a syringe support supportively mounting the prefilled syringe to the housing;
- a syringe cushion associated with the syringe support and prefilled syringe and made of an elastomeric material to compensate for shape irregularities of the pre-filled syringe, and
- an energy source configured for biasing the plunger with a force selected to produce an injecting pressure in the medicament in the fluid chamber that substantially remains below 500 p.s.i. during the injection of the medicament to jet inject the medicament from the fluid chamber through the injection-assisting needle to the injection site.
7 more elements
A jet injector, comprising:
- a prefilled syringe comprising:
- a container portion defining a fluid chamber containing a medicament,
- an injection-assisting needle disposed at a distal end of the fluid chamber,
- an injecting tip configured for piercing an insertion location and defining a fluid pathway in fluid communication with the fluid chamber for injecting the medicament from the fluid chamber into an injection site,
- wherein the injection-assisting needle is adhered to the container portion,
- a syringe body that includes a flange and a wall and hub of unitary construction, and
- a plunger movable within the fluid chamber,
- a housing that houses the prefilled syringe and is configured for allowing insertion of the injection-assisting needle at the injection location to an insertion point that is at a penetration depth of up to 5 mm below a surface at the insertion location;
- a syringe support supportively mounting the prefilled syringe to the housing;
- a syringe cushion associated with the syringe support and prefilled syringe and made of an elastomeric material to compensate for shape irregularities of the pre-filled syringe, and
- an energy source configured for biasing the plunger with a force selected to produce an injecting pressure in the medicament in the fluid chamber that substantially remains below 500 p.s.i. during injection of the medicament to jet inject the medicament from the fluid chamber through the injection-assisting needle to an injection site remote from the injecting tip.
8 more elements
A jet injector, comprising:
- a prefilled syringe comprising:
- a container portion defining a fluid chamber containing a medicament,
- an injection-assisting needle disposed at a distal end of the fluid chamber, the injection-assisting needle having an injection tip configured for piercing an insertion location, and defining a fluid pathway in fluid communication with the fluid chamber for injecting the medicament from the chamber into an injection site,
- wherein the injection-assisting needle is adhered to the container portion,
- a syringe body that includes a flange and a wall and hub of unitary construction and
- a plunger movable within the fluid chamber;
- a housing that houses the prefilled syringe and is configured for allowing insertion of the injection-assisting needle at the injection location to an insertion point that is at a penetration depth below a surface at the insertion location;
- an energy source configured for biasing the plunger with a force selected to produce an injecting pressure in the medicament in the fluid chamber that substantially remains up to 350 p.s.i. during injection of the medicament;
- and
- an elastomeric cushion configured to compensate for shape irregularities of the prefilled syringe and absorb energy when the energy source is activated;
- wherein the prefilled syringe is associated with the housing in a fixed position before and during activation of the energy source for firing of the jet injector.
8 more elements
Dependencies are inferred from the claim text.