Device, system and method for self-administration of a treatment fluid
First Claim
1. A patient controlled device, for self-administration of medication, comprising:
- a housing;
a first lever projecting from said housing;
a spring cage axially movable relative to the housing;
a compression spring contained at least partially within said spring cage;
a plunger axially movable relative to the spring cage and the housing;
a second lever, internal to said housing, wherein said first lever and said second lever are pivoted by a mutual pin, and wherein said second lever is adapted to apply force to the spring cage to move the spring cage toward the plunger and compress the compression spring;
an internal reservoir;
a fluid inlet; and
a fluid outlet;
wherein said compression spring is adapted to apply force to said plunger when compressed by said spring cage to release a medication bolus dosage from said internal reservoir through said fluid outlet.
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Accused Products
Abstract
A device, system and method for self-administration of a bolus dosage of a treatment fluid are disclosed. A device according to embodiments of the present invention may comprise a housing comprising an external lever operable by a user, an internal lever, for applying pressure to a compression spring, which in turn may press a piston to pressurize treatment fluid contained in an internal reservoir, in a high flow rate, through a small diameter catheter, into a patient body. A system according to some embodiment may comprise a device having an external reservoir connected to an inlet thereof, and a catheter connected to an outlet thereof. A method according to some embodiments may comprise actuating levers of the device, compressing a partially loaded compression spring contained in a spring cage, and pressurizing fluid contained in an internal reservoir of the device to be released through an outlet of the device.
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Citations
22 Claims
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1. A patient controlled device, for self-administration of medication, comprising:
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a housing; a first lever projecting from said housing; a spring cage axially movable relative to the housing; a compression spring contained at least partially within said spring cage; a plunger axially movable relative to the spring cage and the housing; a second lever, internal to said housing, wherein said first lever and said second lever are pivoted by a mutual pin, and wherein said second lever is adapted to apply force to the spring cage to move the spring cage toward the plunger and compress the compression spring; an internal reservoir; a fluid inlet; and a fluid outlet; wherein said compression spring is adapted to apply force to said plunger when compressed by said spring cage to release a medication bolus dosage from said internal reservoir through said fluid outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A patient controlled system for self-administration of a treatment fluid, comprising:
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an external infusion reservoir; a patient controlled device, for self-administration of treatment fluid to said patient body, said patient controlled device comprising; a housing; a spring cage axially movable relative to the housing; a compression spring contained at least partially within said spring cage; a plunger axially movable relative to the spring cage and the housing; a first lever projecting from said housing; a second lever, internal to said housing, wherein said first lever and said second lever are pivoted by a mutual pin, and wherein said second lever is adapted to apply force to the spring cage to move the spring cage toward the plunger and compress the compression spring; an internal reservoir; a fluid inlet; and a fluid outlet; a hydraulic valve, positioned at said device fluid outlet, for preventing flow when said patient controlled device is inactive; and a catheter connected to said fluid outlet of said patient controlled device; wherein said compression spring is adapted to apply force to said plunger when compressed, to release a medication bolus dosage from said internal reservoir through said fluid outlet to said catheter. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for self-administration of a bolus dosage of treatment fluid by a patient, the method comprising:
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actuating a first lever projecting from a housing of a patient controlled device for self-administration of treatment fluids to a patient body, said patient controlled device comprising an internal reservoir, a plunger, a fluid inlet, and a fluid outlet; pushing, by said first lever, a second lever mutually pivoted therewith to apply force, by the second lever, to a spring cage to move the spring cage toward the plunger and compress a compression spring contained at least partially within the spring cage; temporarily locking said second lever in an inactive position; pressurizing treatment fluid, contained within said internal reservoir, by said compression spring; releasing substantially all the volume of said treatment fluid in said internal reservoir through said fluid outlet of said patient controlled device; and releasing said temporary locking of said second lever from said inactive position to an active position. - View Dependent Claims (19, 20, 21, 22)
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Specification