Vial transfer and injection apparatus and method
First Claim
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1. An injection device comprising:
- a housing;
an arcuately expandable bladder made of elastomeric material and positioned within the housing, the bladder including a proximal end, a distal end and a wall extending between the proximal end and the distal end;
an injection cannula moveable within a central portion of the housing between a pre-dispense position and a dispense position, the injection cannula not being in fluid flow communication with the bladder in the pre-dispense position and being in fluid flow communication with the bladder in the dispense position;
a manifold within the housing attached to the proximal end of the bladder, the manifold having a fluid inlet port and a fluid pathway communicating between the fluid inlet port and the bladder for introduction of liquid under pressure into the bladder;
the distal end of the bladder being moveable within the housing, wherein the bladder elongates between the proximal end and the distal end and the distal end of the bladder moves along an arcuate path away from the proximal end of the bladder and at least partially around the central portion of the housing as liquid is introduced under pressure to expand the bladder; and
wherein an elastic force in the bladder wall when the bladder is arcuately expanded provides the pressure to expel liquid from the bladder and through the injection cannula, whereby the distal end of the bladder moves along the arcuate path and toward the proximal end due to the elastic force in the bladder wall as liquid flows from the bladder through the injection cannula.
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Accused Products
Abstract
Drug delivery system, injection device, transfer apparatus, vial holder and method of administering and transferring are disclosed. The system may include transfer apparatus and an injection device. The transfer apparatus may have receiving stations for a drug source, such as a vial or vial holder, and for an injection device, and fluid flow pathways for transferring drugs from the source into the injection device. The injection device may include an expandable elastic bladder and an injection cannula that is movable between a plurality of positions.
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Citations
23 Claims
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1. An injection device comprising:
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a housing; an arcuately expandable bladder made of elastomeric material and positioned within the housing, the bladder including a proximal end, a distal end and a wall extending between the proximal end and the distal end; an injection cannula moveable within a central portion of the housing between a pre-dispense position and a dispense position, the injection cannula not being in fluid flow communication with the bladder in the pre-dispense position and being in fluid flow communication with the bladder in the dispense position; a manifold within the housing attached to the proximal end of the bladder, the manifold having a fluid inlet port and a fluid pathway communicating between the fluid inlet port and the bladder for introduction of liquid under pressure into the bladder; the distal end of the bladder being moveable within the housing, wherein the bladder elongates between the proximal end and the distal end and the distal end of the bladder moves along an arcuate path away from the proximal end of the bladder and at least partially around the central portion of the housing as liquid is introduced under pressure to expand the bladder; and wherein an elastic force in the bladder wall when the bladder is arcuately expanded provides the pressure to expel liquid from the bladder and through the injection cannula, whereby the distal end of the bladder moves along the arcuate path and toward the proximal end due to the elastic force in the bladder wall as liquid flows from the bladder through the injection cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An injection device comprising:
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a housing; an arcuately expandable bladder made of elastomeric material and positioned within the housing, the bladder including a proximal end, a distal end and a wall extending between the proximal end and the distal end; an injection cannula moveable within a central portion of the housing between a pre-dispense position and a dispense position, the injection cannula not being in fluid flow communication with the bladder in the pre-dispense position and being in fluid flow communication with the bladder in the dispense position; a manifold within the housing attached to the proximal end of the bladder, the manifold having a fluid inlet port and a fluid pathway communicating between the fluid inlet port and the bladder for the introduction of liquid under pressure into the bladder; the distal end of the bladder being moveable within the housing;
wherein the bladder elongates between the proximal end and the distal end and the distal end of the bladder moves along an arcuate path away from the proximal end of the bladder and at least partially around the central portion of the housing as liquid is introduced under pressure to expand the bladder;the bladder wall including a radially inner wall portion and a radially outer wall portion relative to the central portion of the housing;
the radially inner wall portion being thicker than the radially outer wall portion along a length of the elongated wall substantially parallel to the arcuate path between the proximal end and the distal end of the bladder to induce the bladder to extend in the arcuate path at least partially around the central portion of the housing as it expands; andwherein an elastic force in the bladder wall when the bladder is arcuately expanded provides pressure to expel liquid from the bladder and through the injection cannula, whereby the distal end of the bladder moves along the arcuate path and toward the proximal end due to the elastic force in the bladder wall as liquid flows from the bladder through the injection cannula. - View Dependent Claims (20, 21)
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22. An injection device comprising:
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a housing; an arcuately expandable bladder made of elastomeric material and positioned within the housing, the bladder including a proximal end, a distal end and a wall extending between the proximal end and the distal end; an injection cannula moveable within a central portion of the housing between a pre-dispense position and a dispense position, the injection cannula not being in fluid flow communication with the bladder in the pre-dispense position and being in fluid flow communication with the bladder in the dispense position; a manifold within the housing attached to the proximal end of the bladder;
the manifold having a fluid inlet port and a fluid pathway communicating between the fluid inlet port and the bladder for the introduction of liquid under pressure into the bladder;the distal end of the bladder being moveable within the housing, wherein the bladder elongates between the proximal end and the distal end and the distal end of the bladder moves along an arcuate path away from the proximal end of the bladder and at least partially around the central portion of the housing as liquid is introduced under pressure to expand the bladder; the bladder wall including a radially inner wall portion and a radially outer wall portion relative to the central portion of the housing, the radially inner wall portion being thicker than the radially outer wall portion along a length of the elongated wall substantially parallel to the arcuate path between the proximal end and the distal end of the bladder to induce the bladder to extend in the arcuate path at least partially around the central portion of the housing as it expands; a guide extending at least partially around the central portion of the housing and slidably constraining the thicker radially inner wall portion to move along the arcuate path during bladder contraction and expansion; and wherein an elastic force in the bladder wall when the bladder is arcuately expanded provides pressure to expel liquid from the bladder and through the injection cannula, whereby the distal end of the bladder moves along the arcuate path and toward the proximal end due to the elastic force in the bladder wall as liquid flows from the bladder through the injection cannula. - View Dependent Claims (23)
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Specification