Injection device and method of assembly and activation
First Claim
1. A system for delivering a pharmaceutical product from a cartridge having a first, inactivated condition and a second, activated condition, said system comprising:
- an injector body having a side wall having a proximal end portion and a distal end portion, said side wall having an inner surface and an outer surface, said inner surface of said side wall defining a cavity for receiving at least a portion of a cartridge;
one or more retention members disposed on said outer surface of said side wall of said injector body;
a plunger rod having a proximal end portion, a distal end portion, and one or more receiving members between said proximal end portion and said distal end portion; and
,said one or more retention members and said one or more receiving members constructed to cooperatively retain said plunger rod to said injector body adjacent said outer surface of said side wall of said injector body when said plunger rod is in a first position, said one or more retention members and said one or more receiving members constructed to cooperatively release said plunger rod from said injector body when said plunger rod is transitioned axially toward said distal end of said injector body to a second position, said plunger rod having a pushing surface for engaging a cartridge positioned within said cavity of said injector body, said pushing surface constructed to move a cartridge positioned within said injector body axially as said plunger rod is moved from said first position to said second position, whereby movement of said plunger rod from said first position to said second position activates a pharmaceutical cartridge positioned within said cavity.
1 Assignment
0 Petitions
Accused Products
Abstract
An injector device for a pharmaceutical cartridge. The injector device includes a body defining a space for receiving a pharmaceutical cartridge. One or more retention members are disposed on an outer surface of the body. The injector device further includes a plunger rod having a connection member constructed for connection to a piston associated with a cartridge. The plunger rod has one or more receiving members constructed to cooperatively retain the plunger rod on the body in a first position, and to release the plunger rod from the body when the plunger rod is moved to a second position. The plunger rod further includes a surface for engaging a pharmaceutical cartridge positioned within the body of said injector and for moving a pharmaceutical cartridge distally as the plunger rod is moved from its first position to its second position, thereby activating the cartridge.
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Citations
28 Claims
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1. A system for delivering a pharmaceutical product from a cartridge having a first, inactivated condition and a second, activated condition, said system comprising:
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an injector body having a side wall having a proximal end portion and a distal end portion, said side wall having an inner surface and an outer surface, said inner surface of said side wall defining a cavity for receiving at least a portion of a cartridge; one or more retention members disposed on said outer surface of said side wall of said injector body; a plunger rod having a proximal end portion, a distal end portion, and one or more receiving members between said proximal end portion and said distal end portion; and
,said one or more retention members and said one or more receiving members constructed to cooperatively retain said plunger rod to said injector body adjacent said outer surface of said side wall of said injector body when said plunger rod is in a first position, said one or more retention members and said one or more receiving members constructed to cooperatively release said plunger rod from said injector body when said plunger rod is transitioned axially toward said distal end of said injector body to a second position, said plunger rod having a pushing surface for engaging a cartridge positioned within said cavity of said injector body, said pushing surface constructed to move a cartridge positioned within said injector body axially as said plunger rod is moved from said first position to said second position, whereby movement of said plunger rod from said first position to said second position activates a pharmaceutical cartridge positioned within said cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for delivering a pharmaceutical product from a cartridge having a first, inactivated condition and a second, activated condition, comprising:
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an injector body having a side wall having a proximal end portion and a distal end portion, said side wall having an inner surface and an outer surface, said inner surface of said side wall defining a cavity for receiving at least a portion of a cartridge, said outer surface of said injector body having one or more frangible posts extending therefrom; a plunger rod having a proximal end portion, a distal end portion, and one or more receiving apertures between the proximal end portion and the distal end portion thereof; and
,wherein said one or more receiving apertures are adapted to mate with said one or more frangible posts to fixedly retain said plunger rod to said injector body adjacent the outer surface of the injector body when said plunger rod is in a first position and to preclude movement of said plunger rod prior to a force being applied to fracture said frangible posts from said injector body, thereby moving said plunger rod to a second position and releasing said plunger rod; said plunger rod having a pushing surface for engaging a cartridge positioned within said cavity of said injector body, said pushing surface constructed to move a cartridge positioned within said injector body axially as said plunger rod is moved from said first position to said second position, whereby movement of said plunger rod from said first position to said second position activates a pharmaceutical cartridge positioned within said cavity. - View Dependent Claims (17, 18, 19)
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20. A system for delivering a pharmaceutical product from a cartridge having an inactivated state and an inactivated stated, said system comprising:
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an injector body having a side wall having a proximal end portion and a distal end portion, said side wall having an inner surface and an outer surface, said inner surface of said side wall defining a cavity for receiving at least a portion of a cartridge; a plunger rod having a body portion and a pusher member extending transversely from said body portion, said plunger rod being secured to said side wall of said injector body when said plunger rod is in a first, inactivated position, said plunger rod being detached from said side wall of said injector body when said plunger rod is in a second, activated position, said pusher member having a nub projecting transversely therefrom, wherein said nub is positioned at least partially within a cavity at an end of a cartridge positioned within said cavity when said plunger rod is in said first, inactivated position, and wherein said nub is positioned outside a cavity at an end of a cartridge positioned within said cavity when said plunger rod is in said second activated position. - View Dependent Claims (21)
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22. A system for delivering a pharmaceutical product from a cartridge, comprising:
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an injector body having a side wall having a proximal end portion and a distal end portion, said side wall having an inner surface and an outer surface, said inner surface of said side wall defining a cavity for receiving at least a portion of a cartridge; a pair of finger grips extending transversely from said injector body, the finger grips configured to allow a medical professional to engage the finger grips for activating the system; an opening in the sidewall of said injector body adjacent the finger grips, said opening providing a decreased diametrical position for said fingers of said medical professional on said finger grips to reside; and
,a plunger rod having a body portion and a pusher member extending transversely from said body portion, said plunger rod being secured to said outer surface of said side wall of said injector body in a first position, said plunger rod being released from said outer surface of said side wall of said injector body in a second position, said plunger rod having a pushing surface for engaging a cartridge positioned within said cavity of said injector body, said pushing surface constructed to move a cartridge positioned within said injector body axially as said plunger rod is moved from said first position to said second position, whereby movement of said plunger rod from said first position to said second position activates a pharmaceutical cartridge positioned within said cavity.
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23. An injector for use with a pharmaceutical cartridge having a body portion fluidly sealed at a proximal end thereof by a piston having a connecting member associated therewith, the pharmaceutical cartridge being fluidly sealed at a distal end thereof by a pierceable diaphragm, the pharmaceutical cartridge further including a hub slidably mounted on a distal end portion of the body portion, the hub having a piercing member associated therewith such that the piercing member is fluidly sealed from a pharmaceutical product contained in the body portion of the pharmaceutical cartridge when the cartridge is in a first, inactivated position relative to the body portion of the pharmaceutical cartridge, and such that the piercing member is disposed through the pierceable diaphragm and in fluid contact with the pharmaceutical product contained in the body of the pharmaceutical cartridge when the cartridge is in a second, activated position such that the pharmaceutical product contained in the body of the pharmaceutical cartridge can be ejected from the cartridge through a flow channel defined through the piercing member by moving the piston toward the distal end of the body portion, the injector comprising:
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a body having a side wall having a proximal end portion and a distal end portion, the side wall having an inner surface and an outer surface, said inner surface of said side wall defining a space for receiving at least a portion of a body of a pharmaceutical cartridge therein; one or more retention members disposed on said outer surface of said body; a plunger rod having a proximal end portion and a distal end portion, said distal end portion of said plunger rod having a connection member constructed for connection to a connecting member mounted on a piston associated with a cartridge, said plunger rod having one or more engagement surfaces formed along a length of said plunger rod; said one or more retention members and said one or more engagement surfaces constructed to cooperatively retain said plunger rod on said body when said plunger rod is in a first position, said one or more retention members and said one or more engagement surfaces constructed to cooperatively release said plunger rod from said body when said plunger rod is moved toward said distal end of said body to a second position; and said plunger rod further including a surface for engaging a proximal end of a body of a pharmaceutical cartridge positioned within said body of said injector, said surface constructed to move a proximal end of a body of a pharmaceutical cartridge distally as said plunger rod is moved from said first position to said second position; whereby movement of said plunger rod from said first position to said second position releases said plunger rod from said body of said injector, and whereby movement of said plunger rod from said first position to said second position simultaneously activates a pharmaceutical cartridge disposed within said body of said injector. - View Dependent Claims (24, 25, 26, 27)
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28. A system for delivering a pharmaceutical product from a cartridge, said system comprising:
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an injector body having a side wall having a proximal end portion and a distal end portion, said side wall having an inner surface and an outer surface, said inner surface of said side wall defining a cavity for receiving at least a portion of a cartridge, said side wall having one or more retention members extending outwardly therefrom; a plunger rod having a body portion and a pusher member extending transversely from said body portion, said plunger rod being secured to said injector body, said pusher member having a nub projecting transversely therefrom, wherein said nub is positioned at least partially within a cavity at an end of a cartridge positioned within said cavity when said plunger rod is a first position connected to said injector body; said plunger rod having one or more receiving members on a body portion thereof, said retention members and said receiving members constructed to cooperatively retain said plunger rod to said injector body adjacent said outer surface of said injector body when said plunger rod is said first position, said one or more retention members and said one or more receiving members constructed to cooperatively release said plunger rod from said injector body when said plunger rod is transitioned axially toward said distal end of said injector body to a second position.
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Specification