Self-contained pressurized injection device
First Claim
1. An apparatus, comprising:
- a medicament container having a distal end portion and a proximal end portion, and a longitudinal axis extending through the distal end portion and the proximal end portion, the distal end portion configured to be coupled to a needle;
a piston movably disposed within the medicament container such that the medicament container is divided into a first internal portion and a second internal portion, the first internal portion configured to contain a medicament;
a pressurized fluid container coupled to the proximal end portion of the medicament container and containing a pressurized fluid;
a flow regulator positioned between the medicament container and the pressurized fluid container, the flow regulator configured to be opened to selectively place the pressurized fluid container in fluid communication with the second internal portion of the medicament container such that the pressurized fluid fills the second internal portion and directly applies a force on the piston to move the piston toward the distal end portion of the medicament container; and
a valve mechanism coupled to the distal end portion of the medicament container, the valve mechanism configured to selectively restrict a flow path between the first internal portion of the medicament container and the needle, the valve mechanism including an actuator configured to move in a direction substantially normal to the longitudinal axis;
of the medicament container to actuate the valve mechanism.
5 Assignments
0 Petitions
Accused Products
Abstract
An apparatus includes a medicament container and an actuator assembly coupled to a proximal end portion of the medicament container. A distal end portion of the medicament container is configured to be coupled to a needle. A piston is movably disposed within the medicament container such that the medicament container is divided into a first internal portion and a second internal portion, the first internal portion containing a medicament. The actuator assembly has a pressurized fluid container, a regulator and a bias member. The pressurized fluid container is configured to move relative to the medicament container between a first position and a second position. The regulator is configured to fluidically couple the pressurized fluid container and the second internal portion of the medicament container when the pressurized fluid container is in the second position. The bias member is configured to bias the pressurized fluid container in the first position.
112 Citations
19 Claims
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1. An apparatus, comprising:
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a medicament container having a distal end portion and a proximal end portion, and a longitudinal axis extending through the distal end portion and the proximal end portion, the distal end portion configured to be coupled to a needle; a piston movably disposed within the medicament container such that the medicament container is divided into a first internal portion and a second internal portion, the first internal portion configured to contain a medicament; a pressurized fluid container coupled to the proximal end portion of the medicament container and containing a pressurized fluid; a flow regulator positioned between the medicament container and the pressurized fluid container, the flow regulator configured to be opened to selectively place the pressurized fluid container in fluid communication with the second internal portion of the medicament container such that the pressurized fluid fills the second internal portion and directly applies a force on the piston to move the piston toward the distal end portion of the medicament container; and a valve mechanism coupled to the distal end portion of the medicament container, the valve mechanism configured to selectively restrict a flow path between the first internal portion of the medicament container and the needle, the valve mechanism including an actuator configured to move in a direction substantially normal to the longitudinal axis;
of the medicament container to actuate the valve mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus, comprising
a medicament container having a distal end portion and a proximal end portion, and a longitudinal axis extending through the distal end portion and the proximal end portion, the distal end portion configured to be coupled to a needle; -
a piston movably disposed within the medicament container such that the medicament container is divided into a first internal portion and a second internal portion, the first internal portion configured to contain a medicament; a pressurized fluid container coupled to the proximal end portion of the medicament container such that the pressurized fluid container can selectively be placed in fluid communication with the second internal portion of the medicament container; and a valve mechanism coupled to the distal end portion of the medicament container, the valve mechanism configured to control a flow of the medicament from the first internal portion to the needle, the valve mechanism including a valve body, a valve member, and a valve seat including a first portion and a second portion, the valve member configured to move within the valve body in a direction substantially parallel to the longitudinal axis of the medicament container between a first position and a second position when the valve mechanism is actuated, the valve member being in contact with the first portion of the valve seat when the valve member is in the first position, the valve member deforming the second portion of the valve seat when the valve member is in the second position, wherein the second portion of the valve seat applies a biasing force to the valve member when deformed to urge the valve member back to the first position. - View Dependent Claims (13, 14, 15)
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16. An apparatus, comprising:
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a medicament container having a distal end portion and a proximal end portion and a longitudinal axis extending through the distal end portion and the proximal end portion, the distal end portion configured to be coupled to a needle; a piston movably disposed within the medicament container such that the medicament container is divided into a first internal portion and a second internal portion, the first internal portion configured to contain a medicament, the proximal end portion of the medicament container configured to be coupled to a pressurized fluid container such that the pressurized fluid container can be placed in fluid communication with the second internal portion of the medicament container; and a valve mechanism coupled to the distal end portion of the medicament container, the valve mechanism including a valve body, a compressible tube, a valve member configured to rotate within the valve body, and an actuator coupled to the valve member, the valve member defining a lumen having first and second ends, the lumen receiving a portion of the tube, the tube extending beyond the first and second ends of the lumen and defining at least a portion of a flow path between the first internal portion of the medicament container and the needle, and the actuator being configured to move in a direction substantially normal to the longitudinal axis of the medicament container to rotate the valve member and pinch the compressible tube to restrict the flow of medicament through the needle. - View Dependent Claims (17, 18, 19)
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Specification