Drive mechanism for disposable fluid infusion pumping cassette
First Claim
Patent Images
1. A driver for driving a fluid pumping cassette having valve means for controlling the flow of fluid through the fluid pumping cassette, driven by actuators associated with said driver, comprising:
- a. an elongated valve actuator to operate valve means on the cassette;
b. a bracket pivotally mounted on said driver, said bracket having two arms, a first arm being pivotally secured to one end of said valve actuator;
c. cam means driveably engaging the second arm of said bracket;
d. motor means to drive said cam means; and
e. positioning means to monitor the rotational position of said cam means.
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Accused Products
Abstract
A driver for use in an infusion pumping cassette having an elongated valve actuator which operates a valve controlling the flow of fluid through the cassette, a bracket having a first arm pivotally secured to one end of the valve actuator and a second arm, a cam driveably engaging the second arm, a motor which drives the cam and a positioner which monitors the rotational position of the cam.
336 Citations
22 Claims
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1. A driver for driving a fluid pumping cassette having valve means for controlling the flow of fluid through the fluid pumping cassette, driven by actuators associated with said driver, comprising:
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a. an elongated valve actuator to operate valve means on the cassette; b. a bracket pivotally mounted on said driver, said bracket having two arms, a first arm being pivotally secured to one end of said valve actuator; c. cam means driveably engaging the second arm of said bracket; d. motor means to drive said cam means; and e. positioning means to monitor the rotational position of said cam means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A driver for driving a fluid pumping cassette having valve means for controlling the flow of fluid through the fluid pumping cassette, driven by actuators associated with said driver, comprising a valve actuator assembly including
a. a pair of brackets pivotally mounted on said driver, each bracket having two arms; -
b. a pair of elongated valve actuator means, each valve actuator means being pivotally mounted on the first arm of one of said brackets; c. cam means driveably engaging the second arm of each of said brackets; d. motor means for driving said cam means; and e. synchronizing means for monitoring the rotational position of the cam means and controlling the motor means to synchronize the valve actuator means with a fluid pumping driver. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification