SHUTTLE VALVE
First Claim
1. A shuttle valve comprising:
- a body defining an interior chamber;
an inlet port, an outlet port and a common port, each of the ports being coupled to the body;
a shuttle translatably disposed within the chamber between a first position wherein the inlet port and the common port are fluidicly coupled and the common port and the outlet port are fluidicly uncoupled and a second position wherein the outlet port and the common port are fluidicly coupled and the common port and the inlet port are fluidicly uncoupled;
a first check valve coupled to the inlet port in a manner to permit fluid flow through the inlet port into the chamber and to prevent fluid from discharging from the chamber through the inlet port; and
a second check valve coupled to the outlet port in a manner to permit fluid to discharge from the chamber through the outlet port and to prevent fluid from flowing through the outlet port into the chamber.
2 Assignments
0 Petitions
Accused Products
Abstract
A shuttle valve (12,150,230) is provided having a body (44,152,232) defining an interior chamber (46,154,234). The valve (12,150,230) includes inlet (16,158,238), outlet (18,160,240) and common (14,156,236) ports that are coupled to the body (44,152,232). A shuttle (48, 162,242) is translatably disposed within the chamber (46,154,234) between a first position wherein the inlet (16,158,238) and common (14,156,236) ports are fluidicly coupled and the common (14,156,236) and outlet (18,160,240) ports are fluidicly uncoupled, and a second position wherein the outlet (18,160,240) and common (14,156,236) ports are fluidicly coupled and the common (14,156,236) and inlet (16,158,238) ports are fluidicly uncoupled. A first check valve (50,50,50) coupled to the inlet port (16,158,238) to permit fluid flow through the inlet port (16,158,238) into the chamber (46,154,234) and to prevent fluid from discharging therethrough. A second check valve (50,50,50) is coupled to the outlet port (18,160,240) in a manner to permit fluid to discharge from the chamber (46,154,234) through the outlet port (18,160,240) and to prevent fluid from flowing through the outlet port (18,160,240) into the chamber (46,154,234).
32 Citations
44 Claims
-
1. A shuttle valve comprising:
-
a body defining an interior chamber;
an inlet port, an outlet port and a common port, each of the ports being coupled to the body;
a shuttle translatably disposed within the chamber between a first position wherein the inlet port and the common port are fluidicly coupled and the common port and the outlet port are fluidicly uncoupled and a second position wherein the outlet port and the common port are fluidicly coupled and the common port and the inlet port are fluidicly uncoupled;
a first check valve coupled to the inlet port in a manner to permit fluid flow through the inlet port into the chamber and to prevent fluid from discharging from the chamber through the inlet port; and
a second check valve coupled to the outlet port in a manner to permit fluid to discharge from the chamber through the outlet port and to prevent fluid from flowing through the outlet port into the chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
-
35. A shuttle valve comprising:
-
a body defining an interior chamber;
an inlet port, an outlet port and a common port, each of the ports being coupled to the body;
a shuttle translatably disposed within the chamber between a first position wherein the inlet port and the common port are fluidicly coupled and the common port and outlet port are fluidicly uncoupled and a second position wherein the outlet port and the common port are fluidicly coupled and the common port and the inlet port are fluidicly uncoupled;
the shuttle adapted to change position from the first position to the second position and from the second position to the first position solely in response to pressure of fluid intended to be communicated through the common port. - View Dependent Claims (36)
-
-
37. A shuttle valve comprising:
-
a body defining an interior chamber;
an inlet port, an outlet port and a common port, each of the ports being coupled to the body;
a non-spring biased shuttle translatably disposed within the chamber between a first position wherein the inlet port and the common port are fluidicly coupled and the common port and outlet port are fluidicly uncoupled and a second position wherein the outlet port and the common port are fluidicly coupled and the common port and the inlet port are fluidicly uncoupled, the shuttle position being responsive to positive and negative pressure of fluid at the common port whereby to translate the shuttle between the first and second positions. - View Dependent Claims (38)
-
-
39. A system for dispensing a medical fluid intravenously to a patient comprising:
-
a shuttle valve having a body defining an interior chamber, and having an inlet port, an outlet port and a common port;
a shuttle translatably disposed within the chamber between a first position wherein the inlet port and the common port are fluidicly coupled and the common port and outlet port are fluidicly uncoupled and a second position wherein the outlet port and the common port are fluidicly coupled and the common port and the inlet port are fluidicly uncoupled;
a first check valve coupled to the inlet port in a manner to permit fluid flow through the inlet port into the chamber and to prevent fluid from discharging from the chamber through the inlet port;
a second check valve coupled to the outlet port in a manner to permit fluid to discharge from the chamber through the outlet port and to prevent fluid from flowing through the outlet port into the chamber;
a first section of tubing coupled at one end thereof to the inlet port and configured at an opposite end thereof for coupling to a reservoir of the fluid to be dispensed to the patient; and
a second section of tubing coupled at one end thereof to the outlet port and configured at the other end thereof to be coupled to a patient.
-
-
40. A method for automatically selecting the ports of a valve in a fluid dispensing system to be fluidicly coupled, the valve including a body defining an interior chamber and further including an inlet port, an outlet port and a common port, each port being coupled to the body, the method comprising the steps of:
-
coupling a first check valve to the inlet port in a manner to permit fluid flow through the inlet into the chamber and to prevent fluid from discharging from the chamber through the inlet port;
coupling a second check valve to the outlet port in a manner to permit fluid to discharge from the chamber through the outlet port and to prevent fluid from flowing through the outlet port into the chamber;
disposing a shuttle within the interior chamber so that the shuttle is translatable between a first position wherein the inlet port and common port are fluidicly coupled and the common port and outlet port are fluidicly uncoupled and a second position wherein the outlet port and the common port are fluidicly coupled and the common port and the inlet port are fluidicly uncoupled;
venting at least a portion of the interior chamber to atmosphere. - View Dependent Claims (41, 42)
-
-
43. A method for dispensing a medical fluid intravenously to a patient comprising:
-
obtaining a shuttle valve having a body defining an interior chamber and further including inlet, outlet and common ports, each coupled to the body, and a shuttle translatably disposed within the chamber;
inducing a negative pressure at the common port causing the shuttle to be disposed in a first position wherein the inlet port and the common port are fluidicly coupled and the common port and the outlet port are fluidicly uncoupled; and
inducing a positive pressure at the common port causing the shuttle to be disposed in a second position wherein the outlet port and the common port are fluidicly coupled and the common port and the inlet port are fluidicly uncoupled. - View Dependent Claims (44)
-
Specification