Modular flow control system
First Claim
Patent Images
1. A flow control system comprising:
- a case;
a tube of resilient material, of which at least a portion is located within the case;
a threaded member, having a thread axis and mounted in the case, to cause adjustable compression of the tube as the threaded member is advanced, by bearing against a movable member in contact with the tube; and
a movable member having a first face in contact with the tube and a second face contacted by the threaded member, said second face being aligned at a substantially oblique angle, and the first face being substantially non-parallel, with respect to the thread axis, so that axial motion of the threaded member causes a functionally proportional degree of motion of the first face for compressing the tube.
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Accused Products
Abstract
In a system for controlling flow of fluid from a reservoir to be delivered intravenously to a patient, a valve adjustably constricts a fluid path and maintains a given adjustment until the adjustment is changed. In a preferred embodiment, a valve assembly is insertable into a servo assembly that controls flow through the valve. The valve can be removed from the servo assembly and, when so removed, will retain its last adjustment. A preferred embodiment of the valve utilizes a screw to compress a tube of resilient material.
34 Citations
14 Claims
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1. A flow control system comprising:
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a case; a tube of resilient material, of which at least a portion is located within the case; a threaded member, having a thread axis and mounted in the case, to cause adjustable compression of the tube as the threaded member is advanced, by bearing against a movable member in contact with the tube; and a movable member having a first face in contact with the tube and a second face contacted by the threaded member, said second face being aligned at a substantially oblique angle, and the first face being substantially non-parallel, with respect to the thread axis, so that axial motion of the threaded member causes a functionally proportional degree of motion of the first face for compressing the tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification