| US 7,520,489 B2 | ||
| Fluid handling device and method of making same | ||
| Ricky R. Ruschke, Woodstock, Ill. (US); Edward Kandel, McHenry, Ill. (US); Michael G. Leonhard, West Bend, Wis. (US); Mark A. Kinsley, Lake Geneva, Wis. (US); John A. Leahey, Woodstock, Ill. (US); Jan W. M. Mijers, Haarlem (Netherlands); and Ronald J. Kay, Barrington, Ill. (US) | ||
| Assigned to Filtertek Inc., Hebron, Ill. (US) | ||
| Appl. No. 10/559,992 PCT Filed Jun. 17, 2004, PCT No. PCT/US2004/019641 § 371(c)(1), (2), (4) Date Dec. 07, 2005, PCT Pub. No. WO2004/112866, PCT Pub. Date Dec. 29, 2004. |
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| Claims priority of provisional application 60/479403, filed on Jun. 17, 2003. | ||
| Prior Publication US 2006/0163515 A1, Jul. 27, 2006 | ||
| Int. Cl. F16K 51/00 (2006.01); F16L 29/00 (2006.01); F16L 37/28 (2006.01) | ||
| U.S. Cl. 251—149.7 [251/149.1; 604/249; 604/256] | 56 Claims |
| 1. A needlefree access device comprising:
a) a housing having an inlet, a base comprising an outlet, and a main body portion having a generally cylindrical inside surface
between the inlet and the base;
b) a valve member actuatable between an open position and a closed position, the valve member comprising a piston section
that includes a wiper seal adjacent the inlet when the valve member is closed, wherein in the closed position the valve member
prevents flow between the inlet and the outlet, and wherein the piston section further comprises an opening in the top thereof,
and a flow channel beneath and connected to the opening and extending radially to the outside of the piston section; and
c) a central body within the main body portion of the housing, the central body having a helical shape on its outer surface,
the central body fitting against the inside of the cylindrical surface when the valve member is in its open position;
d) the helical shape defining a helical flow path through the main body portion of the housing when the valve member is in
an open position.
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