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US 8,801,678 B2Granted
Piston for a needleless valve system
AssigneeCareFusion 303, Inc.
InventorsTyler Devin Panian, Jonathan Yeh
Life of this patent
Estimating the term…
Abstract
A piston for a needleless valve system comprising a head portion configured to be disposed in the needleless valve system and controlling fluid flow through the needleless valve system. The head portion comprising a continuous top surface, and an opening disposed proximate the continuous top surface, wherein the continuous top surface is non-planar when the opening is in an open position.
Claims23
A piston for a needleless valve system, the piston comprising:
- a continuous top surface without a slit therethrough;
- an opening disposed proximate to and separated from the top surface, the opening having an open position and a closed position;
- and
- a spacer disposed in the opening,
- wherein the top surface is non-planar when the opening is in the open position.
2 more elements
A needleless valve system comprising:
- a housing comprising a fluid port;
- and
- a piston disposed in said housing, the piston comprising:
- a continuous top surface without a slit therethrough, the top surface having a periphery configured to sealingly mate with the fluid port to block flow through the fluid port;
- and
- an opening disposed proximate to the top surface, the opening having an open position and a closed position,
- wherein the top surface is non-planar when the opening is in an open position.
4 more elements
A method for flow control, the method comprising the step of:
- connecting a needleless device to a port of a housing of a needleless valve system, wherein the port is sealed by a piston having a continuous top without a slit therethrough, the top surface being proximate to the port and planar with a periphery that is in sealing contact with the port thereby sealing the port when no needleless device is connected to the port, and wherein connection of a needleless device to the port displaces the top surface from the port thereby opening the port, and wherein the top surface is non-planar due to an opening that is proximate to and separated from the top surface moving from a closed position to an open position when the top surface is displaced from the port.
A piston for a needleless valve system, the piston comprising:
- a continuous top surface without a slit therethrough;
- an opening disposed proximate to and separated from the top surface, the opening having an open position and a closed position, the open position comprises a relaxed state of the opening, and
- wherein the top surface is non-planar when the opening is in the open position.
Dependencies are inferred from the claim text.