Syringe devices and methods for mixing and administering medication
First Claim
1. A device comprising:
- a housing around a chamber;
a piston having a first end, a second end, and a fluid passageway from the first end to the second end, the piston being insertable into the chamber;
a valve associated with the fluid passageway such that flow through the fluid passageway is selectively regulated by the valve, the valve being disposed between the first and second ends of the piston at a position other than at the first or second end; and
a piercing structure proximate the second end of the piston, the piercing structure comprising;
a base portion having a first diameter;
a head segment comprising a tip, the head segment having a beveled front surface comprising first and second solid bevel faces, and a back surface that joins the front surface at cutting edges; and
a tube segment extending between the base portion and the head segment, the tube portion having a second diameter that is smaller than the first diameter and being more narrow than a widest position across the head segment, the piercing structure having an opening extending radially centrally through the base and a single opening extending through the front surface of the head segment at a point other than the tip at a position where the first and second solid bevel faces meet, the opening being in fluid communication with the fluid passageway.
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Accused Products
Abstract
The invention includes a device having a chamber within a syringe. A fluid passageway extends through a syringe piston. A valve is associated with the passageway controlling fluid passage through the piston. The invention includes a piercing structure having a head segment and a body portion, with a channel through the body portion and through at least one surface of the head without passing through the tip. In another aspect the invention encompasses a method of preparing an agent for administration to an individual. A first component is provided within a syringe and a second component is provided within a vial. A closed valve is associated with a fluid passageway between the vial and the syringe barrel through a piston. Valve repositioning allows fluid passage and sliding of the piston joins the first and second components. Repeated sliding of the piston mixes the components to produce the medication agent.
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Citations
8 Claims
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1. A device comprising:
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a housing around a chamber; a piston having a first end, a second end, and a fluid passageway from the first end to the second end, the piston being insertable into the chamber; a valve associated with the fluid passageway such that flow through the fluid passageway is selectively regulated by the valve, the valve being disposed between the first and second ends of the piston at a position other than at the first or second end; and a piercing structure proximate the second end of the piston, the piercing structure comprising; a base portion having a first diameter; a head segment comprising a tip, the head segment having a beveled front surface comprising first and second solid bevel faces, and a back surface that joins the front surface at cutting edges; and a tube segment extending between the base portion and the head segment, the tube portion having a second diameter that is smaller than the first diameter and being more narrow than a widest position across the head segment, the piercing structure having an opening extending radially centrally through the base and a single opening extending through the front surface of the head segment at a point other than the tip at a position where the first and second solid bevel faces meet, the opening being in fluid communication with the fluid passageway. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification