Prefilled syringe injector
First Claim
Patent Images
1. An injector, comprising:
- a prefilled syringe comprising;
a container portion defining a chamber containing a medicament,a needle disposed at a distal end of the chamber, the needle having an injection tip configured for piercing an insertion location, and defining a fluid pathway in fluid communication with the chamber, anda plunger movable within the chamber,a housing that houses the prefilled syringe;
a syringe support supportively mounting the prefilled syringe to the housing; and
an energy source configured for biasing the plunger with a force selected to produce an injecting pressure in the medicament in the chamber during the injection of the medicament to inject the medicament from the chamber through the needle to an injection site,wherein a penetration depth and injecting pressure are sufficient to substantially prevent backflow of the injected medicament, andwherein the prefilled syringe is associated with the housing in a fixed position before and during activation of the energy source for firing of the injector.
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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.
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Citations
19 Claims
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1. An injector, comprising:
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a prefilled syringe comprising; a container portion defining a chamber containing a medicament, a needle disposed at a distal end of the chamber, the needle having an injection tip configured for piercing an insertion location, and defining a fluid pathway in fluid communication with the chamber, and a plunger movable within the chamber, a housing that houses the prefilled syringe; a syringe support supportively mounting the prefilled syringe to the housing; and an energy source configured for biasing the plunger with a force selected to produce an injecting pressure in the medicament in the chamber during the injection of the medicament to inject the medicament from the chamber through the needle to an injection site, wherein a penetration depth and injecting pressure are sufficient to substantially prevent backflow of the injected medicament, and 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 injector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification