Needle-free injection device
First Claim
1. A needle-free injection device comprising:
- an outer housing;
an inner housing, receiving a needle-free syringe in one end, the inner housing being moveable within the outer housing between a syringe loading position and a firing position;
an activation button operatively associated with the inner and outer housing; and
a housing lock engaged by the activation button to prohibit movement of the inner housing from the syringe loading position to the firing position when the activation button is activated in the syringe loading position;
a hammer within the inner housing communicating with a plunger within the needle-free syringe;
a release mechanism engaged by the activation button to release stored energy to power the hammer, wherein the activation button can only engage the release mechanism when the housing is in the firing position;
a lever associated with the activation button; and
a ball lock sleeve associated with the lever and the hammer such that articulation of the lever moves the ball lock sleeve releasing the hammer.
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0 Petitions
Accused Products
Abstract
A needle-free injection device having an outer housing and an inner housing is disclosed. The inner housing is configured to receive a needle-free syringe in one end. In addition, the inner housing is movable within the outer housing between a syringe loading position and a firing position. The device also includes an activation button operatively associated with the inner and outer housings and a housing lock engaged by the activation button to prohibit movement of the inner housing from the syringe loading position to the firing position when the activation button is activated with the inner housing in the syringe loading position. Methods and apparatus for using, filing and operating the needle-free injection device are also disclosed.
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Citations
31 Claims
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1. A needle-free injection device comprising:
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an outer housing; an inner housing, receiving a needle-free syringe in one end, the inner housing being moveable within the outer housing between a syringe loading position and a firing position; an activation button operatively associated with the inner and outer housing; and a housing lock engaged by the activation button to prohibit movement of the inner housing from the syringe loading position to the firing position when the activation button is activated in the syringe loading position; a hammer within the inner housing communicating with a plunger within the needle-free syringe; a release mechanism engaged by the activation button to release stored energy to power the hammer, wherein the activation button can only engage the release mechanism when the housing is in the firing position; a lever associated with the activation button; and a ball lock sleeve associated with the lever and the hammer such that articulation of the lever moves the ball lock sleeve releasing the hammer. - View Dependent Claims (2)
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3. A needle-free injection device comprising:
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an outer housing; an inner housing, receiving a needle-free syringe in one end, the inner housing being movable within the outer housing between a syringe loading position and a firing position; an activation button operatively associated with the inner and outer housing; and a housing lock engaged by the activation button to prohibit movement of the inner housing from the syringe loading position to the firing position when the activation button is activated in the syringe loading position; a hammer within the inner housing communication with a plunger within the needle-free syringe; a release mechanism engaged by the activation button to release stored energy to power the hammer, wherein the activation button can only engage the release mechanism when the housing is in the firing position; and a syringe mount to receive a needle-free syringe at one end of the inner housing, the syringe mount comprising an interlocking structure cooperating with the inner housing and outer housing to prevent the placement of a needle-free syringe into engagement with the syringe mount unless the inner housing is in the syringe loading position. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A needle-free injection device comprising:
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an outer housing; an inner housing; and a syringe mount to receive a needle-free syringe at one end of the inner housing, wherein the inner housing is moveable within the outer housing between a syringe loading position and a firing position; and
wherein the syringe mount comprises an interlocking structure cooperating with the inner housing preventing the placement of a needle-free syringe into engagement with the syringe mount unless the inner housing is in the syringe loading position. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A needle-free syringe system comprising:
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a syringe body comprising a nozzle at one end and a dose setting surface substantially opposite the nozzle; a plunger body comprising a leading end, a seal and a hammer surface substantially opposite the leading end, wherein the syringe body defines a dosage space within the syringe between the nozzle and the plunger seal, which dosage space has a selected dosage volume when the plunger body is positioned within the syringe body such that the dose setting surface and hammer surface are co-planar; a handle substantially opposite the plunger body; a separable shaft between the plunger body and handle; a break line defined in the separable shafy, wherein the handle comprises a plunger positioning surface which cooperates with the hammer surface to position the plunger body in a needle-free syringe body such that the dose setting surface and hammer surface are co-planar. - View Dependent Claims (24, 25, 26, 27)
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28. A needle-free syringe system comprising:
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a syringe body comprising a nozzle at one end and a dose setting surface substantially opposite the nozzle; a plunger body comprising a leading end, a seal and a hammer surface substantially opposite the leading end, wherein the syringe body defines a dosage space within the syringe between the nozzle and the plunger seal, which dosage space has a selected dosage volume when the plunger body is positioned within the syringe body such that the dose setting surface and hammer surface are co-planar; and a cap comprising; an open ended cap body sized to engage the nozzle end of the syringe body; and an annular flange at a closed end of the cap body providing a stand surface with a diameter greater than the diameter of the open end of the cap body.
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29. A needle-free syringe system comprising:
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a syringe body comprising a nozzle at one end; a filling adapter; a female conical surface defined by one of the syringe body and the filling adapter; and a corresponding male conical surface defined by the other of the syringe body and the filling adapter such that the mated male and female conical surfaces form a fluid tight seal upon attachment of the filling adapter to the nozzle end of the syringe body. - View Dependent Claims (30, 31)
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Specification