Low power portable resuscitation pump
First Claim
1. A method for pumping a fluid through a first resilient tube and a second resilient tube each having original shapes and held in a substantially parallel relationship, said method comprising the steps of:
- (a) arranging a pushing mechanism having first and second pushing surfaces adjacent said first and second resilient tubes and with respect to a pivot point such that said first and second pushing surfaces contact said first and second resilient tubes, respectively, and rock in opposite directions;
(b) rocking said pushing mechanism such that the first pushing surface partially compresses said first resilient tube;
(c) discharging a first portion of said fluid from an output end of said first resilient tube as said rocking step (b) partially compresses said first resilient tube;
(d) rocking said pushing mechanism such that said second pushing surface partially compresses said second resilient tube while simultaneously allowing said first resilient tube to resume its said original shape;
(e) discharging a second portion of said fluid from an output end of said second resilient tube as said rocking step (d) partially compresses said second resilient tube; and
(f) introducing a third portion of said fluid into said first resilient tube as said first resilient tube resumes its said original shape.
3 Assignments
0 Petitions
Accused Products
Abstract
A pump and a method for pumping liquid or fluid through a pair of resilient tubes includes a pushing mechanism which partially compresses the tubes in a balanced, alternating, rocking manner. The resilient tubes are held in a parallel relationship. The pushing mechanism alternately compresses the tubes. As one of the two parallel tubes is compressed, fluid is pumped out of the tube and at the same time fluid is drawn into the second tube as the latter tube resumes its original shape. The resilience of both tubes also is used to assist the pumping action in a balanced fashion, thereby providing a pump that has low power consumption and is lightweight.
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Citations
14 Claims
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1. A method for pumping a fluid through a first resilient tube and a second resilient tube each having original shapes and held in a substantially parallel relationship, said method comprising the steps of:
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(a) arranging a pushing mechanism having first and second pushing surfaces adjacent said first and second resilient tubes and with respect to a pivot point such that said first and second pushing surfaces contact said first and second resilient tubes, respectively, and rock in opposite directions; (b) rocking said pushing mechanism such that the first pushing surface partially compresses said first resilient tube; (c) discharging a first portion of said fluid from an output end of said first resilient tube as said rocking step (b) partially compresses said first resilient tube; (d) rocking said pushing mechanism such that said second pushing surface partially compresses said second resilient tube while simultaneously allowing said first resilient tube to resume its said original shape; (e) discharging a second portion of said fluid from an output end of said second resilient tube as said rocking step (d) partially compresses said second resilient tube; and (f) introducing a third portion of said fluid into said first resilient tube as said first resilient tube resumes its said original shape. - View Dependent Claims (2, 3, 4, 5, 12, 13)
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6. A pump for pumping a fluid, said pump comprising:
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a removable cartridge including a first resilient tube and a second resilient tube each having an original shape; means adapted to receive said removable cartridge for compressing said first resilient tube into a compressed tube; means for reciprocating potential energy that is stored in said first resilient tube when said first resilient tube is compressed, to rock said compressing means as said first resilient tube resumes its said original shape wherein reciprocated potential energy aids said compressing means in a subsequent compression of said second resilient tube; and means for discharging a first portion of said fluid from a first end of said first resilient tube as said compressing means compresses said first resilient tube and for introducing a second portion of said fluid to an opposite end of said first resilient tube as said first resilient tube resumes its said original shape. - View Dependent Claims (7, 8)
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9. A pump for pumping a fluid comprising:
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a first resilient tube and a second resilient tube each having original shapes; means for holding said first resilient tube and said second resilient tube in a substantially parallel relationship to each other; a pushing mechanism having first and second pushing surfaces which are positioned adjacent said first resilient tube and said second resilient tube, respectively, and which are aliqned with respect to a pivot point to rock in opposite directions; driving means for rocking said pushing mechanism between a first and second position, said first pushing surface of said pushing mechanism partially compressing said first resilient tube when moved to said first position and said second pushing surface partially compressing said second resilient tube when moved to said second position; a first input valve connected to one end of said first resilient tube and a first output valve connected to an opposite end of said first resilient tube; and a second input valve connected to one end of said second resilient tube and a second output valve connected to an opposite end of said second resilient tube, wherein a first portion of said fluid is pumped out of said first resilient tube through said first output valve as said first pushing surface compresses said first resilient tube while a second portion of said fluid is drawn into said second resilient tube through said second input valve as said second resilient tube resumes its said original shape. - View Dependent Claims (10, 11)
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14. A pump for pumping a fluid comprising:
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a first resilient tube and a second resilient tube each having original shapes; means for holding said first resilient tube and said second resilient tube in a substantially parallel relationship to each other; a pushing mechanism having first and second pushing surfaces positioned adjacent said first resilient tube and said second resilient tube, respectively; a high efficiency electric motor for rocking said pushing mechanism between a first and second position, said first pushing surface of said pushing mechanism partially compressing said first resilient tube when moved to said first position and said second pushing surface partially compressing said second resilient tube when moved to said second position; a first input valve connected to one end of said first resilient tube and a first output valve connected to an opposite end of said first resilient tube; a second input valve connected to one end of said second resilient tube and a second output valve connected to an opposite end of said second resilient tube, wherein a first portion of said fluid is pumped out of said first resilient tube through said first output valve as said first pushing surface compresses said first resilient tube while a second portion of said fluid is drawn into said second resilient tube through said second input valve as said second resilient tube resumes its said original shape;
.a rotating shaft extending from said electric motor; and an eccentric means on an end of said rotating shaft for engaging said pushing mechanism and converting rotational motion of said rotating shaft into a rocking motion to rock said pushing mechanism.
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Specification