Prefilled syringe jet injector
First Claim
Patent Images
1. A jet injector, comprising:
- a prefilled syringe comprising;
a glass container portion defining a fluid chamber containing a medicament,an injection-assisting needle disposed at the distal end of the chamber, having an injection tip configured for piercing an insertion location, and defining a fluid pathway in fluid communication with the chamber for injecting the fluid from the chamber into an injection site,wherein the injection-assisting needle is adhered to the glass container portion,a syringe body that includes a flange, a wall and hub of unitary construction, and where the syringe body of the prefilled syringe is made of glass, anda plunger movable within the fluid chamber,a housing that houses the prefilled syringe and is configured for allowing insertion of the needle at the injection location to an insertion point that is at a penetration depth below the 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, andan 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 between about 80 p.s.i. and 1000 p.s.i. during the injection of the medicament to jet inject the medicament from the fluid chamber through the needle to the injection site.
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Accused Products
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.
132 Citations
23 Claims
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1. A jet injector, comprising:
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a prefilled syringe comprising; a glass container portion defining a fluid chamber containing a medicament, an injection-assisting needle disposed at the distal end of the chamber, having an injection tip configured for piercing an insertion location, and defining a fluid pathway in fluid communication with the chamber for injecting the fluid from the chamber into an injection site, wherein the injection-assisting needle is adhered to the glass container portion, a syringe body that includes a flange, a wall and hub of unitary construction, and where the syringe body of the prefilled syringe is made of glass, and a plunger movable within the fluid chamber, a housing that houses the prefilled syringe and is configured for allowing insertion of the needle at the injection location to an insertion point that is at a penetration depth below the 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 between about 80 p.s.i. and 1000 p.s.i. during the injection of the medicament to jet inject the medicament from the fluid chamber through the needle to the injection site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 20, 21, 22)
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15. A jet injector, comprising:
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a prefilled syringe comprising; a glass container portion defining a fluid chamber containing a medicament, an injection-assisting needle disposed at the distal end of the chamber, an injecting tip configured for piercing an insertion location and defining a fluid pathway in fluid communication with the chamber for injecting the fluid from the chamber into an injection site, wherein the infection-assisting needle is adhered to the glass container portion, a syringe body that includes a flange, a wall and hub of unitary construction, and where the syringe body of the prefilled syringe is made of glass, and a plunger movable within the fluid chamber, a housing that houses the prefilled syringe and is configured for allowing insertion of the needle at the injection location to an insertion point that is at a penetration depth of up to 5 mm below the 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 between about 80 p.s.i, and 1000 p.s.i, during injection of the medicament to jet inject the medicament from the fluid chamber through the needle to an injection site remote from the injecting tip. - View Dependent Claims (16, 17, 18, 19)
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23. A jet injector, comprising:
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a prefilled syringe comprising; a glass container portion defining a fluid chamber containing a medicament, an injection-assisting needle disposed at the distal end of the chamber, having an injection tip configured for piercing an insertion location, and defining a fluid pathway in fluid communication with the chamber for injecting the fluid from the chamber into an injection site, wherein the injection-assisting needle is adhered to the glass container portion, a syringe body that includes a flange, a wall and hub of unitary construction, and where the syringe body of the prefilled syringe is made of glass, and a plunger movable within the fluid chamber; a housing that houses the prefilled syringe and is configured for allowing insertion of the needle at the injection location to an insertion point that is at a penetration depth below the 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 between 80 p.s.i, to 1000 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.
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Specification