MAGNETICALLY BALANCED FINGER-TYPE PERISTALTIC PUMP
First Claim
1. A peristaltic pump (DDS) comprising a plurality of effecters, actuated in a periodic manner upon by obstructive forces of a flexible infusion tube so as flow of infusion fluid is provided along said infusion tube, the magnitude of said obstructive forces being dependent upon the displacement of said moving effecters;
- and a plurality of balancing magnets providing balancing forces upon one or all said moving effecters, said balancing forces at each point along the path of motion of the moving effecters being of approximately equal magnitude to that of said obstructive forces at said point;
such that the parasitic output due to work performed against said obstructive forces is approximately zero and yield is maximized.
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Accused Products
Abstract
A peristaltic pump includes a plurality of effecters, actuated in a periodic manner upon by obstructive forces of a flexible infusion tube so as flow of infusion fluid is provided along said infusion tube, the magnitude of the obstructive forces being dependent upon the displacement of said moving effecters; and a plurality of balancing magnets providing balancing forces upon one or all the moving effecters, the balancing forces at each point along the path of motion of the moving effecters being of approximately equal magnitude to that of the obstructive forces at the point; such that the parasitic output due to work performed against the obstructive forces is approximately zero and yield is maximized.
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Citations
19 Claims
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1. A peristaltic pump (DDS) comprising a plurality of effecters, actuated in a periodic manner upon by obstructive forces of a flexible infusion tube so as flow of infusion fluid is provided along said infusion tube, the magnitude of said obstructive forces being dependent upon the displacement of said moving effecters;
- and a plurality of balancing magnets providing balancing forces upon one or all said moving effecters, said balancing forces at each point along the path of motion of the moving effecters being of approximately equal magnitude to that of said obstructive forces at said point;
such that the parasitic output due to work performed against said obstructive forces is approximately zero and yield is maximized. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- and a plurality of balancing magnets providing balancing forces upon one or all said moving effecters, said balancing forces at each point along the path of motion of the moving effecters being of approximately equal magnitude to that of said obstructive forces at said point;
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18. A mechanism of reducing the parasitic output of periodic systems comprising:
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at least one moving member acted upon by obstructive forces, the magnitude of said obstructive forces being dependent upon the displacement of said moving member; and a plurality of balancing elements providing balancing forces upon said moving member, said balancing forces at each point along the path of motion of the moving member being of approximately equal magnitude to that of said obstructive forces at said point; such that the parasitic output is reduced to about zero.
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19. A method of reducing the parasitic output of periodic systems comprising;
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obtaining a force-displacement profile that is the forces of at least one moving member acted upon by obstructive forces; and
,providing magnetic balancing forces at each point along the path of the moving member, said balancing forces being of approximately equal magnitude to the obstructive forces but acting in the opposite direction;
of said obstructive forces at said point;thereby reducing the parasitic output to about zero.
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Specification