Fluid handling device and method of making same
First Claim
Patent Images
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.
2 Assignments
0 Petitions
Accused Products
Abstract
A fluid handling device, such as a needlefree access device, includes a housing having an inlet and an inlet channel; and a flow control member comprising a combination outlet, biasing and piston member. The flow control member includes a piston section moveable between a closed position in which the piston section is inside the housing below the inlet channel but allows fluid to flow through the inlet channel; a biasing section connected to the piston section that normally biases the piston section into the inlet channel; and an outlet section connected to the biasing section having an outlet fitting in fluid communication with the inside of the housing.
284 Citations
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A needlefree access device comprising:
-
a) a housing having an inlet, 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, wherein in the closed position the valve member prevents flow between the inlet and the outlet; 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 wherein the valve member is formed as part of a piston section of a combined piston section and biasing section. - View Dependent Claims (10, 11, 12)
-
-
13. A needlefree access device comprising:
-
a) a housing having an inlet, an inlet channel and an outlet; and b) a biasing and piston member having i) a piston section moveable between a closed position in which the piston section is in the inlet channel and an open position in which the piston section is inside the housing below the inlet channel but allows fluid to flow through the inlet channel; and ii) a biasing section connected to the piston section that normally biases the piston section into the inlet channel, the biasing section comprising a resilient body having a helical shape on at least part of its outer surface, the helical shape cooperating with the housing surrounding the biasing section to provide a helical flow channel through the device. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
-
-
53. 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 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; wherein the piston section comprises a normally elliptical top portion with a V-shaped opening across a minor axis of the ellipse.
-
-
54. 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 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; wherein the piston section in its closed position is either flush with or extends out of the housing inlet.
-
-
55. 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 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; wherein the piston section comprises a normally elliptical top portion with a wedge shaped opening therein. - View Dependent Claims (56)
-
Specification