Cartridge fed programmable ambulatory infusion pumps powered by DC electric motors
First Claim
Patent Images
1. An infusion pump system comprising:
- a fluid source cartridge including a pump interface portion containing a plurality of linear fluid conduits each being connected to an output port and a fluid source portion from which fluid is provided to said plurality of fluid conduits;
a pump housing having a plurality of linear peristaltic pumps each having a set of pump fingers, the sets of pump fingers being arranged on a common base; and
means for receiving said fluid source cartridge onto said housing adjacent the common base such that each of said linear fluid conduits aligns with one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps.
2 Assignments
0 Petitions
Accused Products
Abstract
A cartridge fed infusion pump containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor. The motor has a shaft which rotates to perform a pump cycle. A position encoder mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft.
315 Citations
33 Claims
-
1. An infusion pump system comprising:
-
a fluid source cartridge including a pump interface portion containing a plurality of linear fluid conduits each being connected to an output port and a fluid source portion from which fluid is provided to said plurality of fluid conduits; a pump housing having a plurality of linear peristaltic pumps each having a set of pump fingers, the sets of pump fingers being arranged on a common base; and means for receiving said fluid source cartridge onto said housing adjacent the common base such that each of said linear fluid conduits aligns with one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An infusion pump comprising:
-
a motor operable to rotate a motor shaft; means for driving said motor; a pump mechanism actuated by said motor shaft; a fluid supply line situated relative to said pump mechanism so as to be acted on by said pump mechanism such that when said motor shaft is rotating, fluid is moved through said supply line; processor means for initiating said driving means at selected intervals defined by a whole number of clock cycles to achieve a desired infusion rate which corresponds to intervals equal to the whole number and a calculated fracitonal value of clock cycles; and a memory location for storing a number representative of the fraction of a clock cycle and for accumulating the calculated fractional value at each pump cycle, so that when the accumulated sum reaches at least 1.0, an additional clock cycle is temporarily added to the whole number of clock cycles in the selected interval. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A multiple fluid infusion pump comprising:
-
a plurality of direct current motors each operable to rotate a motor shaft; means for driving each of said motors; a plurality of pump mechanisms arranged on a common base, each including a set of pump fingers which reciprocate through the base upon actuation by one of said motor shafts; and a plurality of fluid supply lines, each situated relative to one of said pump mechanisms so as to be acted on by its respective pump mechanism such that when the motor associated with said pump mechanism is rotating, fluid is moved through said supply line. - View Dependent Claims (23, 24, 25, 26)
-
-
27. An infusion pump comprising:
-
a housing having a platform; a plurality of linear peristaltic infusion pumps, each pump having a plurality of pump fingers, said pumps being arranged in said housing so that said pump fingers reciprocate in and out through said platform; and means for receiving a plurality of linear fluid conduits such that each of said linear fluid conduits aligns with the pump fingers of one of said linear peristaltic pumps so that for each fluid conduit, fluid is pumped by one of said linear peristaltic pumps. - View Dependent Claims (28, 29, 30, 31, 32, 33)
-
Specification