Pneumatic controller and method
First Claim
1. A control device for controlling a fluid-supply machine;
- the device comprising;
(a) a housing;
(b) a pressure control member secured to said housing;
said pressure control member being constructed and arranged to selectively change a fluid pressure within said control member;
(c) a first fluid-conduit member in fluid-flow communication with said pressure control member; and
(d) a first sensor in fluid-flow communication with said first fluid-conduit member;
said sensor being constructed and arranged to generate a control signal based upon said fluid pressure within said control member.
2 Assignments
0 Petitions
Accused Products
Abstract
A pneumatic control device includes a housing, a pressure control member secured to the housing, a first fluid-conduit member, and a first sensor. The pressure control member is constructed and arranged to selectively change a fluid pressure within the control member. The first fluid-conduit member is in fluid-flow communication with the pressure control member. The first sensor is in fluid-flow communication with the first fluid-conduit member. The sensor is constructed and arranged to generate a control signal based upon the fluid pressure within the control member. In preferred systems, the pneumatic controller is useful for producing a variable control signal to control a rate of fluid dispersement to a patient in an angiographic system.
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Citations
40 Claims
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1. A control device for controlling a fluid-supply machine;
- the device comprising;
(a) a housing; (b) a pressure control member secured to said housing;
said pressure control member being constructed and arranged to selectively change a fluid pressure within said control member;(c) a first fluid-conduit member in fluid-flow communication with said pressure control member; and (d) a first sensor in fluid-flow communication with said first fluid-conduit member;
said sensor being constructed and arranged to generate a control signal based upon said fluid pressure within said control member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- the device comprising;
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18. A method for controlling a fluid-supply machine for dispensing fluid into a patient, the method comprising steps of:
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(a) securing a pressure-control member to a fluid-supply machine; (b) changing a pressure within the pressure-control member by adjusting a volume of the pressure-control member; (c) dispensing a fluid into a patient, based upon the pressure within the pressure control member; and (d) selectively repeating said steps of changing and dispensing. - View Dependent Claims (19, 20)
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21. An angiographic system comprising:
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a syringe for holding contrast media; a plunger movable within said syringe to dispense said contrast media from said syringe; a motor for moving said plunger; a controller for said motor; said controller including a deformable fluid chamber and a pressure sensor, said fluid chamber being in fluid communication with said pressure sensor; said pressure sensor containing a converter that generates an electrical signal used to set an output of said motor in response to deformation of said fluid chamber. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. An angiographic system comprising:
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a container for holding contrast media; a dispenser device for urging contrast media out of said container; a controller for said dispenser; said controller including a deformable fluid chamber and a pressure sensor, said fluid chamber being in fluid communication with said pressure sensor; said pressure sensor containing a converter that generates an electrical signal used to operate said dispenser device in response to deformation of said fluid chamber. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification