DEVICES, SYSTEMS AND METHODS FOR MEDICAMENT DELIVERY
First Claim
1. An apparatus, comprising:
- a housing defining a gas chamber;
a medicament container disposed within the housing;
a needle fluidically coupled to the medicament container, the needle configured to move between a first needle position, in which the needle is disposed within the housing, and a second needle position in which a portion of the needle extends from the housing;
a retraction spring configured to bias the needle towards the first needle position;
an expandable assembly configured to transition between a collapsed configuration and an expanded configuration, the expandable assembly including a proximal member and a distal member; and
an energy storage member configured to produce a pressurized gas within the gas chamber, the pressurized gas exerting a force to move the needle from the first needle position to the second needle position and to move the distal member of the expandable assembly within the medicament container to convey a medicament from the medicament container via the needle, the proximal member of the expandable assembly configured to actuate a valve to release the pressurized gas from the gas chamber when the expandable assembly is transitioned from the collapsed configuration to the expanded configuration.
4 Assignments
0 Petitions
Accused Products
Abstract
An apparatus includes a movable member and a valve coupled to the movable member. The movable member is configured to be disposed within a housing of a medical device and has a first end portion and second end portion. A portion of the first end portion is configured to define a portion of a boundary of a gas chamber. The first end portion defines an opening configured to be in fluid communication between the gas chamber and an area outside the gas chamber. The second end portion is configured to be coupled to a needle configured to deliver a medicament into a body. The valve is configured to selectively allow fluid communication between the gas chamber and the area outside the gas chamber through the opening defined by the first end portion of the movable member.
17 Citations
23 Claims
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1. An apparatus, comprising:
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a housing defining a gas chamber; a medicament container disposed within the housing; a needle fluidically coupled to the medicament container, the needle configured to move between a first needle position, in which the needle is disposed within the housing, and a second needle position in which a portion of the needle extends from the housing; a retraction spring configured to bias the needle towards the first needle position; an expandable assembly configured to transition between a collapsed configuration and an expanded configuration, the expandable assembly including a proximal member and a distal member; and an energy storage member configured to produce a pressurized gas within the gas chamber, the pressurized gas exerting a force to move the needle from the first needle position to the second needle position and to move the distal member of the expandable assembly within the medicament container to convey a medicament from the medicament container via the needle, the proximal member of the expandable assembly configured to actuate a valve to release the pressurized gas from the gas chamber when the expandable assembly is transitioned from the collapsed configuration to the expanded configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus, comprising:
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a housing defining a gas chamber; a medicament container disposed within the housing; a needle fluidically coupled to the medicament container, the needle configured to move between a first needle position, in which the needle is disposed within the housing, and a second needle position in which a portion of the needle extends from the housing; a valve configured to move relative to the housing between a first valve position and a second valve position, the valve configured to fluidically isolate the gas chamber from an external volume when the valve is in the first valve position, the gas chamber in fluid communication with the external volume when the valve is in the second valve position; an expandable assembly disposed within the housing, a proximal end portion of the expandable assembly coupled to the valve, a distal end portion of the expandable assembly disposed within the medicament container, the expandable assembly configured to move the valve from the first valve position to the second valve position when the expandable assembly is transitioned from the collapsed configuration to the expanded configuration; and an energy storage member configured to produce a pressurized gas within the gas chamber, the pressurized gas exerting a force to move the needle from the first needle position to the second needle position and to move the distal end portion of the expandable assembly within the medicament container to convey a medicament from the medicament container via the needle. - View Dependent Claims (12, 13, 14, 15, 16, 18)
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17. The apparatus of 11, wherein the expandable assembly includes a flexible member.
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19. An apparatus, comprising:
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a housing defining a gas chamber; a medicament container disposed within the housing; a needle coupled to the medicament container, the needle configured to move between a first needle position, in which the needle is disposed within the housing, and a second needle position in which a portion of the needle extends from the housing; a valve configured to transition between a first valve configuration and a second valve configuration when actuated, the valve including seal surface that engages a portion of the housing to fluidically isolate the gas chamber from an external volume when the valve is in the first valve configuration, the seal surface disengaged from the portion of the housing when the valve is in the second valve configuration; an expandable assembly disposed within the housing, a first member of the expandable assembly coupled to the valve, a second member of the expandable assembly disposed within the medicament container, the expandable assembly having a first length when the second member is at a first position within the medicament container, the expandable assembly having a second length when the second member is at a second position within the medicament container, the first member configured to actuate the valve when the expandable assembly is transitioned from its first length to its second length; and an energy storage member configured to produce a pressurized gas within the gas chamber, the pressurized gas exerting a force to move the second member of the expandable assembly within the medicament container to convey a medicament from the medicament container via the needle when the needle is in the second needle position. - View Dependent Claims (20, 21, 22, 23)
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Specification