Apparatus and method for preventing free flow in an infusion line
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus and method for preventing free flow through an infusion set utilizes an occluder disposed within the infusion set to selectively prevent flow therethrough. The occluder may be responsive to a pressure differential within the infusion set or may respond to compression of the infusion set. When a pair of occluders are used in sequence, an in-line pump may be formed.
118 Citations
107 Claims
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1-81. -81. (canceled)
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82. A valve for controlling fluid flow, the valve comprising:
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an elongate flexible infusion line configured for carrying liquids, the infusion line having a proximal portion, a middle portion, and a distal portion;
a first occluder disposed in the infusion line for selectively preventing flow of liquid from the proximal portion to the middle portion;
a second occluder disposed in the infusion line for selectively preventing flow of liquid from the middle portion to the distal portion; and
a first actuator associated with and upstream of the first occluder, adjacent the proximal portion of the infusion line for selectively applying force to the proximal portion of the infusion line to enable fluid flow from the proximal portion to the middle portion past the first occluder. - View Dependent Claims (83, 84, 85, 86, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 101, 102)
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88. A valve for controlling fluid flow, the valve comprising:
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an elongate flexible infusion line configured for carrying liquids, the infusion line having a proximal portion, and a distal portion;
a first occluder disposed in the infusion line for selectively preventing flow of liquid from the proximal portion toward the distal portion; and
a first actuator associated with and upstream of the first occluder adjacent the proximal portion of the infusion line for selectively applying force to the infusion line to enable fluid flow from the proximal portion toward the distal portion and past the first occluder. - View Dependent Claims (103, 104)
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98. A valve for controlling fluid flow, the valve comprising:
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an elongate flexible infusion line configured for carrying liquids, the infusion line having a proximal portion, a middle portion and a distal portion;
a first occluder disposed in the infusion set for selectively preventing flow of liquid from the proximal portion to the middle portion and allowing flow when a predetermined pressure exists in the proximal portion;
a second occluder disposed in the infusion set for selectively preventing flow from the middle portion to the distal portion and allowing flow when a predetermined pressure exists in the middle portion wherein the predetermined pressure is different than the predetermined pressure at which flow is allowed past the first occluder; and
an actuator for applying a force to the middle portion to force fluid in the middle portion to pass the second occluder and flow into the distal portion. - View Dependent Claims (99, 100, 105, 106, 107)
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Specification