Peristaltic pump with cam action compensator
First Claim
Patent Images
1. An apparatus for pumping fluids through a tube which comprises:
- a base for supporting said tube in a substantially linear orientation;
means for generating a peristaltic action on said tube; and
a flexure connecting said base with said peristaltic means for pivotal movement of said peristaltic means between a first position and a second position about an axis substantially parallel to the longitudinal axis of said tube, said flexure biased to yieldably urge said peristaltic means toward said first position and against said base for operative engagement of said peristaltic means with said tube.
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Accused Products
Abstract
A linear peristaltic device for pumping medical solutions to a patient comprises a hinged pivot or hinged attachment between the peristaltic drive mechanism and its associated platen. An IV tube, through which the medical solutions are to be pumped is received and held between the peristaltic drive mechanism and the platen during operation of the device. The device also includes a compliant means which normally urges the peristaltic mechanism toward the platen but which yields, as necessary, to limit the force the peristaltic mechanism can exert against the tube.
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Citations
30 Claims
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1. An apparatus for pumping fluids through a tube which comprises:
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a base for supporting said tube in a substantially linear orientation; means for generating a peristaltic action on said tube; and a flexure connecting said base with said peristaltic means for pivotal movement of said peristaltic means between a first position and a second position about an axis substantially parallel to the longitudinal axis of said tube, said flexure biased to yieldably urge said peristaltic means toward said first position and against said base for operative engagement of said peristaltic means with said tube. - View Dependent Claims (2, 3, 4, 5, 16, 17, 18, 19)
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6. A linear peristaltic pump for pumping fluids through an IV tube having a cam action compensator which comprises:
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a platen mounted on said pump; a housing fixedly attached to said pump to receive said tube between said housing and said platen; a plurality of fingers slidably mounted on said housing to squeeze said tube between said fingers and said platen to create a moving zone of occlusion along said tube; a cam shaft operatively coupled to said fingers; a casing having said cam shaft rotatably mounted thereon; and a flexure connecting said casing to said housing for rotation of said casing between a first position and a second position about an axis substantially parallel to the longitudinal axis of said tube and for urging said casing toward said first position to compensate for the action between said fingers and said platen. - View Dependent Claims (7, 8, 9)
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10. A linear peristaltic cam action compensator which comprises:
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a casing; a rotatable cam shaft operatively mounted on said casing; a plurality of fingers coupled to said cam shaft; a flexure; and a housing for operatively receiving said fingers, said housing yieldably connected to said casing by said flexure to establish a pivot axis substantially parallel to the longitudinal axis of said cam shaft for movement of said casing between a first position and a second position and for urging said casing toward said first position to resist movement of said casing about said axis. - View Dependent Claims (11, 12, 27, 28, 29, 30)
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13. An apparatus for pumping fluids through a tube which comprises:
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a base for supporting said tube in a substantially linear orientation; means for generating a moving zone of occlusion along said tube; an integral hinge formed at a juncture between said base and said generating means for pivoting of said generating means between a first position and a second position about an axis substantially parallel to the longitudinal axis of said tube; and resisting means biased to yieldably urge said generating means toward said first position and against said base for operative engagement of said generating means with said tube. - View Dependent Claims (14, 15)
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20. A linear peristaltic pump for pumping fluids through an IV tube having a cam action compensator which comprises:
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a platen mounted on said pump; a housing fixedly attached to said pump to receive said tube between said housing and said platen; a plurality of fingers slidably mounted on said housing to squeeze said tube between said fingers and said platen to create a moving zone of occlusion along said tube; a cam shaft operatively coupled to said fingers; a casing having said cam shaft rotatably mounted thereon; an integral hinge connecting said casing to said housing, said hinge establishing an axis of rotation for said casing substantially parallel to the longitudinal axis of said cam shaft for movement of said casing between a first position and a second position; and resisting means biased to yieldably urge said casing toward said first position and onto said housing to compensate for the action between said fingers and said platen. - View Dependent Claims (21, 22, 23, 24)
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25. A linear peristaltic cam action compensator which comprises:
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a casing; a rotatable cam shaft operatively mounted on said casing; a plurality of fingers coupled to said cam shaft; a housing for establishing linear reciprocal movement of said fingers in response to the rotation of said cam shaft; an integral hinge pivotally connecting said casing to said housing, said hinge establishing an axis of rotation for said casing substantially parallel to the longitudinal axis of said cam shaft for movement of said casing between a first position and a second position; and means yieldably connecting said housing to said casing to bias said casing toward said first position and resist movement of said casing about the hinge axis. - View Dependent Claims (26)
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Specification