Infusion pump system and conduit therefor
First Claim
1. An infusion system operable on a resilient longitudinal tube for pumping fluid therethrough, comprising:
- (a) a plurality of fixed spaced apart first comb means for receiving a tube and defining a pumping volume;
(b) means positioned adjacent to and cooperating with said first comb means for maintaining the tube in position;
(c) a plurality of movable spaced apart second comb means interdigitated with said first comb means and engageable with the tube for reciprocatingly compressing the pumping volume;
(d) first and second spaced apart cooperating valve means engageable with the tube for selectively compressing the tube and thereby permitting fluid to flow from or into the pumping volume;
(e) drive means operably associated with said second comb means and with said first and second valve means for simultaneously reciprocating said second comb means and operating for selectively said first and second valve means; and
,(f) brake means operably associated with said drive means for preventing unintended reciprocation of said second comb means.
1 Assignment
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Accused Products
Abstract
A modular infusion pump system utilizes a positive displacement pump for pumping a known quantity of fluid for each stroke. A plurality of longitudinally spaced apart fixed combs cooperate with a resilient tube to define a known pumping volume. A plurality of movable combs are interdigitated with the fixed combs and are periodically linearly directed to cause the pump volume to be compressed, and therefore the fluid expelled. A rotary to linear drive system is connected with the movable combs and a ratchet system prevents counterrotation when the motor is in the off position. Valves are disposed above and below the pumping unit to appropriately seal off the pumping volume. The valves and the movable combs are operated by means of cams carried by a common shaft.
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Citations
19 Claims
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1. An infusion system operable on a resilient longitudinal tube for pumping fluid therethrough, comprising:
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(a) a plurality of fixed spaced apart first comb means for receiving a tube and defining a pumping volume; (b) means positioned adjacent to and cooperating with said first comb means for maintaining the tube in position; (c) a plurality of movable spaced apart second comb means interdigitated with said first comb means and engageable with the tube for reciprocatingly compressing the pumping volume; (d) first and second spaced apart cooperating valve means engageable with the tube for selectively compressing the tube and thereby permitting fluid to flow from or into the pumping volume; (e) drive means operably associated with said second comb means and with said first and second valve means for simultaneously reciprocating said second comb means and operating for selectively said first and second valve means; and
,(f) brake means operably associated with said drive means for preventing unintended reciprocation of said second comb means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An infusion pump, comprising:
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(a) a housing with a pivotal door means connected thereto; (b) a plurality of fixed spaced apart first comb means positioned within said housing and directed toward said door means and defining a pumping volume; (c) a plurality of spaced apart second comb means interdigitated with said first comb means and each second comb means movable toward and away from said door means and said second comb means being integral and providing a pump shoe; (d) a resilient tube engaged with said first comb means in cooperation with said door means; (e) first and second spaced apart cooperating valve means engageable with said tube for selectively compressing said tube and thereby permitting fluid to selectively flow into or from said pumping volume; (f) drive means operably associated with said second comb means and with said first and second valve means for selectively simultaneously reciprocating said second comb means and operating said first and second valve means; and
,(g) brake means operably associated with said drive means for preventing unintended reciprocation of said second comb means. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification