Syringe apparatus and methods
AssigneeSiemens Healthcare Diagnostics Inc.
InventorJennifer Samproni
Life of this patent
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Abstract
Disclosed is a syringe apparatus. Syringe apparatus has a barrel including an inner surface, an open end, and an inlet end; a plunger including a plunger head received in slidable sealing contact with the inner surface of the barrel and forming a reservoir therein; and an extensible member, optionally including an additive, is contained in the reservoir. Extensible member can be coupled between the inlet end and the plunger head and is extensible in length L as a bio-liquid (e.g., whole blood) is drawn into the reservoir. Methods of mixing or adding an additive such as an anticoagulant, coagulant, or marker, to a bio-liquid are provided, as are other aspects.
Claims23
A syringe apparatus, comprising:
- a barrel including an inner surface, an open end, and an inlet end;
- a plunger including a plunger head received in slidable sealing contact with the inner surface of the barrel and forming a reservoir therein;
- and
- an extensible additive-disassociating member contained within the reservoir, the extensible additive-disassociating member extensible along its length within the reservoir to facilitate mixing a bio-liquid specimen drawn into the reservoir, the extensible additive-disassociating member comprising a central opening formed therein configured for insertion therethrough of a probe into the reservoir.
A syringe apparatus, comprising:
- a barrel including a cylindrical inner surface, an open end, and an inlet end;
- a plunger including a plunger shaft and a plunger head, the plunger head received in slidable sealing contact with the cylindrical inner surface and forming a reservoir therein between the plunger head and the inlet end;
- and
- an extensible additive-disassociating member contained in the reservoir and coupled to the plunger head and the inlet end, the extensible additive-disassociating member comprising a spiral having a helical path from a small diameter dimension to successively larger diameter dimensions and comprising a central opening formed therein configured for insertion therethrough of a probe into the reservoir, the extensible additive-disassociating member comprising at least one of an anticoagulant, a coagulant, or a marker.
A syringe apparatus, comprising:
- a barrel including an inner surface, an open end, and an inlet end;
- a plunger including a plunger head received in slidable sealing contact with the inner surface of the barrel and forming a reservoir therein;
- and
- an extensible member contained in the reservoir, wherein the extensible member is configured to be extensible upon drawing a bio-liquid into the reservoir, the extensible member comprising a plurality of interconnected disc elements.
Dependencies are inferred from the claim text.