Miniature peristaltic pump
First Claim
1. A miniature peristaltic pump comprising:
- a rotor (109) equipped with three rotating rollers (110) each roller comprising a substantially cylindrical body (127) and a shaft (126) on which said body is rotatably mounted, wherein the ends of the shafts of the rollers fit into oblong openings (128) arranged radially in the rotor, a means for driving (111, 112) said rotor, a means for controlling (113) said driving means, a support piece equipped with a rounded-off portion (308) arranged in a substantially concentric manner to the rotor and against which, during operation, said rollers compress a flexible tubing (202) connected to a solution reservoir (201) pushing the solution towards the outside and a means for automatically compensating, by means of springs, the gaps in position between the rollers and said support piece, wherein said means for automatically compensating comprises two springs (129) arranged at the level of the respective ends of said shafts and comprise a central part (130) concentric to the rotor and three curved spring arms (132), one for each roller, of which one end is connected to said central part and the other end is supported on the corresponding end of a roller shaft for pushing it towards the outside and towards the tubing, whereby each roller exerts a substantially constant compression force on the tubing.
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0 Petitions
Accused Products
Abstract
A miniature peristaltic pump includes a rotor with three turning rollers, a support piece with a rounded portion arranged substantially concentric to the rotor and against which, when operating, the rollers are brought to compress a flexible tubing connected to a reservoir of solution to push it outwards and for automatically compensating positional deviations between the roller and the support piece. Each roller has a substantially cylindrical body and a shaft on which the body is rotatably mounted. The ends of the roller shafts are located in oblong slots radially recessed in the rotor. The compensating device includes two springs arranged at the respective ends of the shafts and have a central port concentric to the rotor and three curved spring arms, one for each roller, with one end connected to the central part and the other end bearing on the corresponding end of a roller shaft to push it outwards and thus enable it to exert a substantially constant force of pressure.
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Citations
22 Claims
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1. A miniature peristaltic pump comprising:
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a rotor (109) equipped with three rotating rollers (110) each roller comprising a substantially cylindrical body (127) and a shaft (126) on which said body is rotatably mounted, wherein the ends of the shafts of the rollers fit into oblong openings (128) arranged radially in the rotor, a means for driving (111, 112) said rotor, a means for controlling (113) said driving means, a support piece equipped with a rounded-off portion (308) arranged in a substantially concentric manner to the rotor and against which, during operation, said rollers compress a flexible tubing (202) connected to a solution reservoir (201) pushing the solution towards the outside and a means for automatically compensating, by means of springs, the gaps in position between the rollers and said support piece, wherein said means for automatically compensating comprises two springs (129) arranged at the level of the respective ends of said shafts and comprise a central part (130) concentric to the rotor and three curved spring arms (132), one for each roller, of which one end is connected to said central part and the other end is supported on the corresponding end of a roller shaft for pushing it towards the outside and towards the tubing, whereby each roller exerts a substantially constant compression force on the tubing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A miniature peristaltic pump comprising:
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a rotor (109) equipped with three rotating rollers (110) each roller comprising a substantially cylindrical body (127) and a shaft (126) on which said body is rotatably mounted, wherein the ends of the shafts of the rollers fit into oblong openings (128) arranged radially in the rotor, a driver (111, 112) of said rotor, a controller (113) of said driver, a support piece equipped with a rounded-off portion (308) arranged in a substantially concentric manner to the rotor and against which, during operation, said rollers compress a flexible tubing (202) connected to a solution reservoir (201) for pushing the solution towards the outside and a spring compensator which automatically adjusts the gaps in position between the rollers and said support piece, wherein said spring compensator comprises two springs (129) arranged at the level of the respective ends of said shafts and comprise a central part (130) concentric to the rotor and three curved spring arms (132), one for each roller, of which one end is connected to said central part and the other end is supported on the corresponding end of a roller shaft for pushing it towards the outside and towards the tubing, whereby each roller exerts a substantially constant compression force on the tubing. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification