Syringe-filling medication dispenser
First Claim
1. A medication dispenser, for use with a container containing a liquid medication and a syringe of the type including a needle cannula, a barrel and a plunger, the dispenser comprising:
- a body to which the container and the syringe are mountable;
dual port means for providing gas and liquid ports into the interior of the container;
and a reciprocating pump assembly having a cylinder and a piston, the pump assembly fluidly coupled to the container by the liquid port and spaced apart from, and fluidly coupled to the syringe by a fluid path, the piston being movable from a first position to a second position to withdraw the liquid medication from the container, through the liquid port and into the cylinder, the withdrawn liquid medication being substantially simultaneously replaced with a gas which passes into the container through the gas port, the piston being movable from the second position back towards the first position to force a predetermined volume of the liquid medication along the fluid path and into the needle cannula of the syringe.
1 Assignment
0 Petitions
Accused Products
Abstract
A medication dispenser (2, 120) is used to directly fill a syringe (8, 134) with measured amounts of one or more liquid medications, typically two different types of insulin, from vials (4, 130) each having a septum at one end. The septum of each vial is pierced by a pair of hollow spikes (54, 56, 140, 142). One of the spikes is used to allow the liquid medication to be pumped out of the vial while the other spike is used to introduce air into the vial to replace the withdrawn liquid medication. Using a reciprocating piston-and-cylinder type pump, the vials are pressed a desired number of times according to how much medicine is to be driven into the syringe. The invention permits insulin users the freedom to quickly and easily select the proportions and amounts of insulin to be injected depending upon the user'"'"'s current needs.
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Citations
18 Claims
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1. A medication dispenser, for use with a container containing a liquid medication and a syringe of the type including a needle cannula, a barrel and a plunger, the dispenser comprising:
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a body to which the container and the syringe are mountable; dual port means for providing gas and liquid ports into the interior of the container; and a reciprocating pump assembly having a cylinder and a piston, the pump assembly fluidly coupled to the container by the liquid port and spaced apart from, and fluidly coupled to the syringe by a fluid path, the piston being movable from a first position to a second position to withdraw the liquid medication from the container, through the liquid port and into the cylinder, the withdrawn liquid medication being substantially simultaneously replaced with a gas which passes into the container through the gas port, the piston being movable from the second position back towards the first position to force a predetermined volume of the liquid medication along the fluid path and into the needle cannula of the syringe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A multiple medication dispenser, for use with first and second containers containing first and second liquid medications and a syringe of the type including a needle cannula, a barrel and a plunger, the dispenser comprising:
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a body to which the first and second containers and the syringe are mountable; first and second dual port means for providing first and second gas and liquid ports into the interiors of the first and second containers; first means, spaced apart from the syringe, for substantially simultaneously pumping the first liquid medication from the first container through the first liquid port and replacing the pumped first liquid medication with a first gas which passes into the first container through the first gas port; second means, spaced apart from the syringe, for simultaneously pumping the second liquid medication from the second container through the second liquid port and replacing the pumped second liquid medication with a second gas which passes into the second container through the second gas port; means for fluidly directing the first and second liquid medications from the first and second pumping means to the needle cannula; whereby the first and second liquid medications are pumped from the first and second containers by the first and second pumping means, through the needle cannula and into the syringe. - View Dependent Claims (17, 18)
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Specification