Fluid delivery system with mounting linkage
First Claim
1. A system for delivering fluid to a patient, comprising:
- a fluid conduit through which fluid is delivered to the patient;
a pumping mechanism having a plurality of movable pumping devices guided by at least one guide device to control the direction of movement of the pumping devices and a drive means rigidly mounted to the guide device and operative on the pumping devices to move the pumping devices in the guide device through a predetermined range of motion;
a rigid base mounted so as to position the fluid conduit between itself and the pumping mechanism; and
a mounting linkage connected to the pumping mechanism to mount the pumping mechanism in a predetermined orientation relative to the rigid base and in relation to the fluid conduit so that the pumping devices move into and out of contact with the fluid conduit to move fluid through the conduit, the linkage configured to allow movement of the pumping mechanism relative to the rigid base, but to constrain such movement to the predetermined orientation.
13 Assignments
0 Petitions
Accused Products
Abstract
A fluid delivery system in which the pressure platen for a fluid conduit is fixedly mounted to the pump and the pumping mechanism is movable in relation to the platen to control the force exerted on the conduit. A mounting system comprising a four-bar linkage retains the movable pumping mechanism in a predetermined orientation to the conduit through the mechanism'"'"'s range of movement. The pumping mechanism is spring loaded towards the conduit. The peristaltic fingers of the pump mechanism are located in guides with the drive means for those fingers rigidly mounted to that guide. Should the movements of one or more fingers through the respective guide be prevented, the drive means will be stopped from movement and the pumping mechanism will stall rather than back off and allow free flow.
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Citations
23 Claims
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1. A system for delivering fluid to a patient, comprising:
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a fluid conduit through which fluid is delivered to the patient; a pumping mechanism having a plurality of movable pumping devices guided by at least one guide device to control the direction of movement of the pumping devices and a drive means rigidly mounted to the guide device and operative on the pumping devices to move the pumping devices in the guide device through a predetermined range of motion; a rigid base mounted so as to position the fluid conduit between itself and the pumping mechanism; and a mounting linkage connected to the pumping mechanism to mount the pumping mechanism in a predetermined orientation relative to the rigid base and in relation to the fluid conduit so that the pumping devices move into and out of contact with the fluid conduit to move fluid through the conduit, the linkage configured to allow movement of the pumping mechanism relative to the rigid base, but to constrain such movement to the predetermined orientation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system for delivering fluid to a patient, comprising:
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a fluid conduit through which fluid is delivered to the patient; a pumping mechanism having a plurality of movable pumping devices guided by at least one guide device to control the direction of movement of the pumping devices and a drive means rigidly mounted to the guide device and operative on the pumping devices to move the pumping devices in the guide device through a predetermined range of motion, wherein the drive means is coupled to the pumping devices so that if the pumping devices are unable to move, the drive means cannot move; a rigid base mounted so as to position the fluid conduit between itself and the pumping mechanism; a mounting linkage connected to the pumping mechanism to mount the pumping mechanism in a predetermined orientation relative to the rigid base and in relation to the fluid conduit so that the pumping devices move into and out of contact with the fluid conduit to move fluid through the conduit, the linkage configured to allow movement of the pumping mechanism relative to the rigid base; and biasing means for urging the pumping mechanism toward the rigid base whereby the pumping devices are biased toward the rigid base into contact with the fluid conduit. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification