Dosage control apparatus
First Claim
1. An apparatus for controlling dose rates of one or more treatment solutions, the apparatus comprising:
- a body surrounding an interior chamber, the body having a first and a second port, each of the two ports having an associated port opening in communication with the interior chamber and an associated assembly comprising;
a valve seat;
an armature having a head, the head associated with the valve seat; and
a spring engaging the armature with a spring force directed the head against the valve seat; and
at least one coil surrounding the body, the coil operable to induce a magnetic force in the armatures opposing the spring force, thereby opening the valve.
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Accused Products
Abstract
The invention is directed to a dose control apparatus. The apparatus has two armatures pressed against a valve seat by at least one spring. A coil induces a magnetic field that motivates the armatures against the force of the spring, thereby opening the valve. The armatures may move along a common axis in opposite directions. The apparatus may also include a core located between the armatures and a casing about the coil. The core and casing act to guide the magnetic field, reducing the power requirements for creating the field. Current may be periodically reversed in the coil to provide a degaussing field. In addition, a signal may be produced by the coil in the presence an externally applied magnetic field such as an MRI. An opposing magnetic field may be produced by the coil or the current provided to the coil may be adjusted.
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Citations
21 Claims
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1. An apparatus for controlling dose rates of one or more treatment solutions, the apparatus comprising:
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a body surrounding an interior chamber, the body having a first and a second port, each of the two ports having an associated port opening in communication with the interior chamber and an associated assembly comprising;
a valve seat;
an armature having a head, the head associated with the valve seat; and
a spring engaging the armature with a spring force directed the head against the valve seat; and
at least one coil surrounding the body, the coil operable to induce a magnetic force in the armatures opposing the spring force, thereby opening the valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for controlling dose rates of at least one treatment solution, the apparatus comprising:
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a body surrounding an interior chamber, the body having two ports, each of the two ports having a port opening in communication with the interior chamber and an associated assembly comprising;
a valve seat;
an armature having a head, the head associated with the valve seat; and
a spring engaging the armature with a spring force directed the head against the valve seat;
the armature of each of the two valves having a common movement axis and traveling along the common movement axis in opposite directions;
at least one coil surrounding the body, the coil inducing a magnetic force in the armature, the magnetic force opposing the spring force, thereby opening the valve;
a magnetically permeable core located within the interior chamber and between the armatures; and
a magnetically permeable casing located about the coil and body. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method for controlling the flow of a fluid, the method comprising:
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opposing two or more armatures within an interior chamber;
placing one or more springs between the armatures, wherein the springs force the armatures against an armature'"'"'s associated valve seat;
inducing a magnetic field with at least one coil, the magnetic field motivating the armatures to move along a common axis in opposite directions against the force of the one or more springs providing a path for fluid flow. - View Dependent Claims (19, 20, 21)
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Specification