Needle-free intradermal injection device
First Claim
1. A needle-free injection device comprising:
- an injector body;
an injector tube positioned within the injector body, said injector tube housing a main spring configured to be selectively compressed to place the needle-free injection device in an armed configuration and a hammer, wherein the injector tube is configured to move laterally away from a syringe end of the needle-free injection device when pressure is applied to a nozzle end of a needle-free syringe prior to an injection;
at least one handle attached with a pivot hinge to the injector body such that the handle pivots between an open and a closed position and such that the handle remains attached to the injector body during an injection;
at least one linkage between the handle and the main spring causing the main spring to be compressed into the armed configuration when the handle is moved from the open to the closed position; and
an actuation button in mechanical communication with a hammer release, wherein the actuation button cannot engage the hammer release unless the injector tube is moved to a position fully away from the syringe end of the device.
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Accused Products
Abstract
A needle-free injection device suitable for delivering a therapeutic substance into the intradermal space of a patient. The needle-free injection device includes a main spring which can be compressed using one or more handles attached to the device to place the needle-free injection device into an armed configuration. Device embodiments may optionally include an injector tube and associated apparatus which may be moved relative to other device structures when the injector is pressed against the skin of a patient with sufficient force. The disclosed operational switches and release mechanisms cooperate to prevent injection unless the device is properly positioned for an injection. Needle-free injection systems and methods of operating a needle-free injection device are also disclosed.
132 Citations
18 Claims
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1. A needle-free injection device comprising:
- an injector body;
an injector tube positioned within the injector body, said injector tube housing a main spring configured to be selectively compressed to place the needle-free injection device in an armed configuration and a hammer, wherein the injector tube is configured to move laterally away from a syringe end of the needle-free injection device when pressure is applied to a nozzle end of a needle-free syringe prior to an injection;
at least one handle attached with a pivot hinge to the injector body such that the handle pivots between an open and a closed position and such that the handle remains attached to the injector body during an injection;
at least one linkage between the handle and the main spring causing the main spring to be compressed into the armed configuration when the handle is moved from the open to the closed position; and
an actuation button in mechanical communication with a hammer release, wherein the actuation button cannot engage the hammer release unless the injector tube is moved to a position fully away from the syringe end of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- an injector body;
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10. A needle-free injection system comprising:
- a needle-free injection device comprising;
an injector body;
an injector tube positioned within the injector body, said injector tube housing a main spring configured to be selectively compressed to place the needle-free injection device in an armed configuration and a hammer, wherein the injector tube is caused to move laterally away from a syringe end of the needle-free injection device when pressure is applied to a nozzle end of a needle-free syringe prior to an injection;
at least one handle attached with a pivot hinge to the injector body such that the handle pivots between an open and a closed position and such that the handle remains attached to the injector body during an injection;
a linkage between the handle and the main spring causing the main spring to be compressed into the armed configuration when the handle is moved from the open to the closed position;
an actuation button in mechanical communication with a hammer release, wherein the actuation button cannot engage the hammer release unless the injector tube is moved to a position fully away from the syringe end of the device; and
a needle-free syringe. - View Dependent Claims (11, 12, 13, 14, 15, 16)
- a needle-free injection device comprising;
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17. A method of operating a needle-free injection system comprising:
- providing a needle-free injection device comprising;
an injector body;
an injector tube positioned within the injector body, said injector tube housing a main spring and a hammer;
at least one handle attached with a pivot hinge to the injector body such that the handle pivots between an open and a closed position and such that the handle remains attached to the injector body during an injection;
a linkage between the handle and the main spring;
an actuation button in mechanical communication with a hammer release, wherein the actuation button cannot engage the hammer release unless the injector tube is moved to a position fully away from a syringe end of the device; and
a needle-free syringe;
moving the handle from the open position to the closed position thereby compressing the main spring of the needle-free injection device from an un-armed position to an armed position;
applying force against a patient'"'"'s skin at a nozzle end of the needle-free syringe thereby causing the injector tube to move laterally within the injector body away from the syringe end of the injector body; and
actuating the actuation button to release the hammer and cause an injection. - View Dependent Claims (18)
- providing a needle-free injection device comprising;
Specification