Two-stage reconstituting injector
First Claim
1. An injector for injecting a medicament into a patient, comprising:
- a transfer and firing device associable with a container that defines a first and second chambers, the transfer and firing device being operable to transfer a fluid from the first chamber to the second chamber in a first stage of operation and being operable for firing the fluid from the second chamber through an injection conduit, associated with the container, in a second stage of operation;
a trigger device configured to block operation of the transfer and firing device to end the first stage of operation, the trigger device in blocking association with the transfer and firing device is operable manually in a second triggering stage which causes a firing mechanism to initiate the second stage of operation; and
a transfer control that is manually operable to initiate operation of the transfer and firing device in the first stage of operation,wherein the injection conduit has a position that is fluidly incommunicated with the second chamber, the transfer and firing device configured to fluidly communicate the injection conduit with the second chamber in the first stage of operation,wherein the injection conduit comprises a communicating needle portion, the transfer control operable to relatively move the communicating needle portion with respect to the second chamber to pierce the container to fluidly communicate the second chamber with the communicating needle portion in the first stage of operation.
2 Assignments
0 Petitions
Accused Products
Abstract
An injector for injecting a medicament into a patient. The injector includes a container defining a first chamber, which contains a fluid therein, and a second chamber. The injector also includes an injection conduit configured for directing the fluid fired from the container into the patient. A transfer mechanism is operable by a user to transfer the fluid from the first chamber to the second chamber in a first stage of operation, and a firing mechanism is operable by the user for firing the fluid from the second chamber through the injection conduit in a second stage of operation. An energy source is in powering association with the firing mechanism to drive firing mechanism in the first and second stages.
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Citations
33 Claims
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1. An injector for injecting a medicament into a patient, comprising:
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a transfer and firing device associable with a container that defines a first and second chambers, the transfer and firing device being operable to transfer a fluid from the first chamber to the second chamber in a first stage of operation and being operable for firing the fluid from the second chamber through an injection conduit, associated with the container, in a second stage of operation; a trigger device configured to block operation of the transfer and firing device to end the first stage of operation, the trigger device in blocking association with the transfer and firing device is operable manually in a second triggering stage which causes a firing mechanism to initiate the second stage of operation; and a transfer control that is manually operable to initiate operation of the transfer and firing device in the first stage of operation, wherein the injection conduit has a position that is fluidly incommunicated with the second chamber, the transfer and firing device configured to fluidly communicate the injection conduit with the second chamber in the first stage of operation, wherein the injection conduit comprises a communicating needle portion, the transfer control operable to relatively move the communicating needle portion with respect to the second chamber to pierce the container to fluidly communicate the second chamber with the communicating needle portion in the first stage of operation. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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2. An injector for injecting a medicament into a patient, comprising:
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a transfer and firing device associable with a container that defines a first and second chambers, the transfer and firing device being operable to transfer a fluid from the first chamber to the second chamber in a first stage of operation and being operable for firing the fluid from the second chamber through an injection conduit, associated with the container, in a second stage of operation; a trigger device configured to block operation of the transfer and firing device to end the first stage of operation, the trigger device in blocking association with the transfer and firing device is operable manually in a second triggering stage which causes a firing mechanism to initiate the second stage of operation; and a transfer control that is manually operable to initiate operation of the transfer and firing device in the first stage of operation wherein the transfer control comprises a cap disposed for covering the injection conduit and being associated with the transfer and firing device such that removal of the cap from covering the injection conduit initiates the first stage of operation of the transfer mechanism. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An injector for injecting a medicament into a patient, comprising:
- a transfer mechanism associable with a container that defines a first and second chambers, the transfer mechanism operable by a user to transfer a fluid from the first chamber to the second chamber in a first stage of operation;
a cap disposed for covering an injection conduit that is associated with the container, the cap being associated with the transfer mechanism such that a movement of the cap initiates the first stage of operation of the transfer mechanism; and a firing mechanism operable by the user for firing the fluid from the second chamber through the injection conduit in a second stage of operation; wherein the firing mechanism includes a needle guard that has a protective position disposed for covering a needle of the injection conduit, and an injecting position exposing the needle, and the cap covering the injection conduit covers the needle and needle guard; wherein the needle guard is configured for causing the firing mechanism to fire the fluid when moved to the retracted position. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
- a transfer mechanism associable with a container that defines a first and second chambers, the transfer mechanism operable by a user to transfer a fluid from the first chamber to the second chamber in a first stage of operation;
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20. An injector for injecting a medicament into a patient, comprising:
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a transfer mechanism associable with a container that defines a first and second chambers, the transfer mechanism operable by a user to transfer a fluid from the first chamber to the second chamber in a first stage of operation; a cap disposed for covering an injection conduit that is associated with the container, the cap being associated with the transfer mechanism such that a movement of the cap initiates the first stage of operation of the transfer mechanism; a firing mechanism operable by the user for firing the fluid from the second chamber through the injection conduit in a second stage of operation; and a housing associated with the cap such that rotation of the cap with respect to the housing causes proximal movement of the cap with respect thereto, the cap being configured such that the proximal movement thereof initiates the first stage of operation; wherein at least the housing or the cap has a partial thread in threaded engagement with the other such that a partial rotation of the cap with respect to the housing causes said proximal movement of the cap that initiates the first stage of operation, and further rotation of the cap releases the threaded engagement for releasing the cap from the housing. - View Dependent Claims (31, 32, 33)
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Specification