Pen injection device and method of using same
First Claim
1. A pen injection device comprising:
- a sterile dual transfer spike assembly comprising a dual transfer spike having a first open end and a second open end, the dual transfer spike defining a fluidic pathway extending through the dual transfer spike from the first end to the second end;
a first cartridge assembly comprising a first cartridge housing, and a first cartridge containing a first substance inside the first cartridge housing;
a second cartridge assembly comprising a second cartridge housing, and a second cartridge containing a second substance inside the second cartridge housing, wherein the second cartridge housing is movable relative to the first cartridge housing from a first position wherein the first and second cartridges are not in fluid communication through the dual transfer spike to a second position wherein the first and second cartridges are in fluid communication through the dual transfer spike;
a plunger rod in the first cartridge, translatable in a first direction to transfer at least a portion of the first and second substances from one of the first and second cartridges to the other of the first and second cartridges via the fluidic pathway between the first cartridge and the second cartridge; and
a biasing mechanism configured to bias the plunger rod in a second direction opposite the first direction upon release of the plunger rod after said plunger rod has been translated in said first direction, in order to transfer at least a portion of the first and second substances from the other of the first and second cartridges to the one of the first and second cartridges.
9 Assignments
0 Petitions
Accused Products
Abstract
Pen injection devices (10) and methods of using a pen injection device are disclosed. Pen injection devices include a sterile dual transfer spike assembly (150) including a dual transfer spike defining a fluidic pathway; a first cartridge assembly (12) including a first cartridge (20) containing a first substance; a second cartridge assembly (14) including a second cartridge (30) containing a second substance; a plunger rod (50) translatable in a first direction; and a biasing mechanism (60) configured to bias the plunger rod in a second direction opposite the first direction. Methods of using a pen injection device having a first container, a second container, a plunger rod, and a biasing mechanism include activating the pen injection device, thereby creating a fluidic pathway between the first container and the second container; and translating the plunger rod at least once, thereby transferring a first substance from one container to the other container to mix with a second substance.
31 Citations
20 Claims
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1. A pen injection device comprising:
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a sterile dual transfer spike assembly comprising a dual transfer spike having a first open end and a second open end, the dual transfer spike defining a fluidic pathway extending through the dual transfer spike from the first end to the second end; a first cartridge assembly comprising a first cartridge housing, and a first cartridge containing a first substance inside the first cartridge housing; a second cartridge assembly comprising a second cartridge housing, and a second cartridge containing a second substance inside the second cartridge housing, wherein the second cartridge housing is movable relative to the first cartridge housing from a first position wherein the first and second cartridges are not in fluid communication through the dual transfer spike to a second position wherein the first and second cartridges are in fluid communication through the dual transfer spike; a plunger rod in the first cartridge, translatable in a first direction to transfer at least a portion of the first and second substances from one of the first and second cartridges to the other of the first and second cartridges via the fluidic pathway between the first cartridge and the second cartridge; and a biasing mechanism configured to bias the plunger rod in a second direction opposite the first direction upon release of the plunger rod after said plunger rod has been translated in said first direction, in order to transfer at least a portion of the first and second substances from the other of the first and second cartridges to the one of the first and second cartridges. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification