Telescoping pharmaceutical storage and mixing syringe
First Claim
1. A unitary syringe assembly for the isolated storage and transport of two substances with intermixed injection of said two substances comprising:
- a first syringe assembly for containing a first of said two substances, said syringe assembly including a cylinder defining an interior, a cylinder outlet, and a sealing piston for sealing said first substance within said first syringe assembly;
means for displacing said sealing piston of said first syringe to cause substances in said first syringe to be likewise displaced out said cylinder outlet;
a second syringe assembly coaxial to said first syringe assembly for containing a second of said two substances, said syringe assembly including a cylinder defining an interior, cylinder outlet, and sealing piston for sealing said second substance within said second syringe assembly;
means for displacing said sealing piston of said second syringe to cause substances in said second syringe to be likewise displaced out said cylinder outlet;
a common housing, said first and second syringe assemblies being mounted relative to one another in the common housing;
an isolation valve fluidly coupling the cylinder outlet of one said syringe assembly with the interior of the other of said syringe assemblies when in an open condition and fluidly isolating said cylinder outlet of said one syringe assembly from said interior of said other syringe assembly when in a closed condition; and
,a dispensing head fitting mounted to the outlet of said other syringe assembly to permit the contents of at least said other syringe assembly to be dispensed through a dispensing head responsive to movement of at least one of said means for displacing.
1 Assignment
0 Petitions
Accused Products
Abstract
A unitary syringe assembly including a diluent syringe and a jell syringe stores and enables convenient transport of isolated components required for injection. A valve is placed between the two syringes. Immediately before required injection, the valve is opened and the diluent and jell between the two syringes are thoroughly intermixed. Valve aperture size is selected to provide viscous resistance to the flow of the jell until thorough mixing has occurred to provide the user with a tactile indication of sufficient mixing. Upon complete mixing, a needle is attached and injection occurs.
79 Citations
10 Claims
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1. A unitary syringe assembly for the isolated storage and transport of two substances with intermixed injection of said two substances comprising:
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a first syringe assembly for containing a first of said two substances, said syringe assembly including a cylinder defining an interior, a cylinder outlet, and a sealing piston for sealing said first substance within said first syringe assembly; means for displacing said sealing piston of said first syringe to cause substances in said first syringe to be likewise displaced out said cylinder outlet; a second syringe assembly coaxial to said first syringe assembly for containing a second of said two substances, said syringe assembly including a cylinder defining an interior, cylinder outlet, and sealing piston for sealing said second substance within said second syringe assembly; means for displacing said sealing piston of said second syringe to cause substances in said second syringe to be likewise displaced out said cylinder outlet; a common housing, said first and second syringe assemblies being mounted relative to one another in the common housing; an isolation valve fluidly coupling the cylinder outlet of one said syringe assembly with the interior of the other of said syringe assemblies when in an open condition and fluidly isolating said cylinder outlet of said one syringe assembly from said interior of said other syringe assembly when in a closed condition; and
,a dispensing head fitting mounted to the outlet of said other syringe assembly to permit the contents of at least said other syringe assembly to be dispensed through a dispensing head responsive to movement of at least one of said means for displacing. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A unitary syringe assembly loaded with two substances for the isolated storage and transport of said two substances with intermixed injection of said two substances comprising:
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a first syringe assembly for containing a first of said two substances, said syringe assembly including a cylinder defining an interior, cylinder outlet, and sealing piston for sealing said first substance within said first syringe assembly; one of said two substances loaded in said first syringe assembly between said sealing piston and said cylinder outlet; means for displacing said sealing piston of said first syringe to cause said substance in said first syringe to be likewise displaced out said cylinder outlet; a second syringe assembly coaxial to said first syringe assembly for containing a second of said two substances, said syringe assembly including a cylinder defining an interior, cylinder outlet, and sealing piston for sealing said second substance within said second syringe assembly; the other of said two substances loaded in said second syringe assembly between said sealing piston and said cylinder outlet; means for displacing said sealing piston of said second syringe to cause substance in said second syringe to be likewise displaced out said cylinder outlet; a common housing, said first and second syringe assemblies being mounted relative to one another in the common housing; an isolation valve fluidly coupling the cylinder outlet of one said syringe assembly with the interior of the other of said syringe assemblies when in an open condition and fluidly isolating said cylinder outlet of said one syringe assembly from said interior of said other syringe assembly when in a closed condition; and
,a dispensing head fitting mounted to the outlet of said other syringe assembly to permit the contents of at least said other syringe assembly to be dispensed through a dispensing head responsive to movement of at least one of said means for displacing. - View Dependent Claims (8, 9, 10)
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Specification