Medicament delivery devices for administration of a medicament within a prefilled syringe
First Claim
1. An apparatus, comprising:
- a housing;
a medicament container configured to move within the housing between a first position and a second position in response to a force produced by an energy storage member, a proximal end portion of the medicament container including a flange and having a plunger disposed therein; and
a movable member configured to move within the housing, the movable member being monolithically constructed and including a first shoulder, a second shoulder, and a retraction spring, the first shoulder of the movable member configured to exert at least a portion of the force on a proximal surface of the flange to move the medicament container from the first position to the second position, a portion of the first shoulder configured to deform when the medicament container is in the second position such that (1) the first shoulder is at least partially disposed in the medicament container and (2) the portion of the force is exerted upon the plunger, the second shoulder of the movable member configured to exert a retraction force produced by the retraction spring on a distal surface of the flange to move the medicament container from the second position towards the first position.
5 Assignments
0 Petitions
Accused Products
Abstract
An apparatus includes a housing, a medicament container and a movable member. The medicament container is configured to move within the housing between a first position and a second position in response to a force produced by an energy storage member. A proximal end portion of the medicament container includes a flange and has a plunger disposed therein. A first shoulder of the movable member is configured to exert the force on the flange to move the medicament container from the first position to the second position. A portion of the first shoulder deforms when the medicament container is in the second position such that at least a portion of the force is exerted upon the plunger. A second shoulder of the movable member is configured to exert a retraction force on the flange to move the medicament container from the second position towards the first position.
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Citations
36 Claims
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1. An apparatus, comprising:
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a housing; a medicament container configured to move within the housing between a first position and a second position in response to a force produced by an energy storage member, a proximal end portion of the medicament container including a flange and having a plunger disposed therein; and a movable member configured to move within the housing, the movable member being monolithically constructed and including a first shoulder, a second shoulder, and a retraction spring, the first shoulder of the movable member configured to exert at least a portion of the force on a proximal surface of the flange to move the medicament container from the first position to the second position, a portion of the first shoulder configured to deform when the medicament container is in the second position such that (1) the first shoulder is at least partially disposed in the medicament container and (2) the portion of the force is exerted upon the plunger, the second shoulder of the movable member configured to exert a retraction force produced by the retraction spring on a distal surface of the flange to move the medicament container from the second position towards the first position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus, comprising:
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a housing; a medicament container configured to move within the housing between a first position and a second position in response to a force produced by an energy storage member, a proximal end portion of the medicament container including a flange and having a plunger disposed therein; and a movable member configured to exert at least a portion of the force on the medicament container to move the medicament container from the first position to the second position, the movable member including a piston portion, an engagement portion, and a retraction portion, the piston portion including a piston surface and an outer surface, the outer surface defining a recess, the engagement portion configured to be transitioned between a first configuration and a second configuration, the engagement portion being partially disposed outside of the recess defined by the outer surface of the piston portion when the engagement portion is in the first configuration to limit movement of the piston portion relative to the plunger when the medicament container moves from the first position to the second position such that the piston surface is spaced apart from the plunger, the engagement portion being disposed within the recess when the engagement portion is in the second configuration and the medicament container is in the second position to place the piston surface in contact with the plunger, the retraction portion configured to produce a retraction force to move the movable member and the medicament container towards the first position. - View Dependent Claims (16, 17, 18, 19, 20)
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21. An apparatus, comprising:
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a housing; a medicament container configured to move within the housing between a first position and a second position in response to a force produced by an energy storage member, a proximal end portion of the medicament container including a flange and having a plunger disposed therein; a first movable member configured to move within the housing, the first movable member including a latch portion, a first shoulder and a second shoulder, the latch portion operably coupled to the energy storage member such that the first shoulder of the first movable member is configured to exert at least a portion of the force on the flange to move the medicament container from the first position to the second position, a portion of the first movable member configured to be at least partially disposed within the medicament container when the medicament container is in the second position such that at least a portion of the force is exerted upon the plunger to move the plunger within the medicament container, a second shoulder of the first movable member configured to exert a retraction force on the flange to move the medicament container from the second position toward the first position after the plunger is moved within the medicament container; and a second movable member coupled to the energy storage member and selectively engaged with the latch portion of the first movable member, the second movable member configured to transfer the force produced by the energy storage member to the latch portion to move the first movable member such that the medicament container is moved from the first position to the second position, the second movable member configured to move the first movable member relative to the medicament container to move the plunger within the medicament container, the second movable member configured to be disengaged from the latch portion after the plunger is moved within the medicament container such that the retraction force exerted on the flange by the second shoulder moves the medicament container from when the second position toward the first position. - View Dependent Claims (22, 23, 24, 25)
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26. An apparatus, comprising:
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a movable member configured to be disposed within a housing of a medical device, the movable member being monolithically constructed to include a first engagement portion, a second engagement portion, and a retraction portion, the first engagement portion configured to be operably coupled to an energy storage member, the second engagement portion configured to engage a flange of a medicament container such that a first shoulder of the second engagement portion exerts a first force produced by the energy storage member on the flange to move the medicament container within the housing in a first direction from a first position to a second position, at least a portion of the movable member being moved within the medicament container when the medicament container is in the second position to expel a medicament from the medicament container, the retraction portion configured to produce a second force, a second shoulder of the second engagement portion configured to exert the second force produced by the retraction member on the flange to move the medicament container within the housing in a second direction from the second position towards the first position. - View Dependent Claims (27, 28, 29, 30, 31)
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32. An apparatus, comprising:
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a housing; a medicament container configured to move within the housing between a first position and a second position in response to a force produced by an energy storage member, a proximal end portion of the medicament container including a flange and having a plunger disposed therein; and a movable member including a piston portion having a first surface, a second surface, a first engagement portion, and a second engagement portion, the first engagement portion extending from the first surface and configured to be transitioned between a first configuration and a second configuration, the first engagement portion in contact with a proximal surface of the flange of the medicament container when in the first configuration to maintain a distance between the second surface of the piston portion and the plunger as the medicament container is moved from the first position to the second position, the first engagement portion configured to be transitioned from the first configuration to the second configuration when the medicament container is in the second position such that the first engagement portion is disposed in a recess defined by the first surface of the piston portion, the second surface of the piston portion configured to be placed in contact with the plunger when the first engagement portion is in the second configuration, the second engagement portion configured to exert a retraction force on a distal surface of the flange to move the medicament container from the second position towards the first position after the piston portion moves the plunger within the medicament container. - View Dependent Claims (33, 34, 35, 36)
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Specification