Memory Mopet
First Claim
Patent Images
1. A hand-held automatic pipetting apparatus operable with a standard glass or plastic pipet for aspirating and dispensing a predetermined amount of liquid, the apparatus comprising:
- (a) a housing including a handle and a pipette adapter for holding a pipette,(b) an electric motor carried by the housing(c) a peristaltic pump carried by the housing and driven by said motor,(d) conduit means communicating said pump with said pipette adapter, and(e) control means for activating the motor and pump, wherein said pump comprises a compressible conduit for conveying said liquid and at least two spaced apart pressure elements for engaging and compressing said conduit at locations spaced lengthwise thereon as the pressure elements are moved lengthwise on said conduit, and means for moving each of said pressure elements lengthwise on said conduit successively into and out of pressure contact with said conduit, said apparatus operable selectively for continuous or intermittent aspirating and dispensing liquid.
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Accused Products
Abstract
A hand-held automatic pipetting apparatus operable with a standard glass or plastic pipet for aspirating and dispensing a predetermined amount of liquid, comprising a housing including a handle and a pipette adapter for holding a pipette, an electric motor carried by the housing, a peristaltic pump carried by the housing and driven by said motor, conduit means communicating said pump with said pipette adapter when coupled to said pipette adapter, and control means for activating the motor and pump.
43 Citations
34 Claims
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1. A hand-held automatic pipetting apparatus operable with a standard glass or plastic pipet for aspirating and dispensing a predetermined amount of liquid, the apparatus comprising:
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(a) a housing including a handle and a pipette adapter for holding a pipette, (b) an electric motor carried by the housing (c) a peristaltic pump carried by the housing and driven by said motor, (d) conduit means communicating said pump with said pipette adapter, and (e) control means for activating the motor and pump, wherein said pump comprises a compressible conduit for conveying said liquid and at least two spaced apart pressure elements for engaging and compressing said conduit at locations spaced lengthwise thereon as the pressure elements are moved lengthwise on said conduit, and means for moving each of said pressure elements lengthwise on said conduit successively into and out of pressure contact with said conduit, said apparatus operable selectively for continuous or intermittent aspirating and dispensing liquid. - View Dependent Claims (2, 3, 4, 5, 6, 15, 17, 22, 24, 25, 27, 31, 32, 33, 34)
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7. A hand-held automatic pipetting apparatus operable with a standard glass or plastic pipette for aspirating dispensing a predetermined amount of liquid, the apparatus comprising:
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(a) a housing including a handle and a pipette adapter for holding a pipette, (b) an electric motor carried by the housing, (c) a peristaltic pump carried by the housing and driven by said motor and having a rotatable member whose rotation is representative of the amount of liquid pumped of the pump, conduit means communicating said pump with said pipette adapter, (e) control means for activating the motor and pump, wherein said pump comprises a compressible conduit for conveying said liquid and at least two spaced apart pressure elements for engaging and compressing said conduit at locations spaced lengthwise thereon as the pressure elements are moved lengthwise on said conduit, and means for moving each of said pressure elements lengthwise on said conduit successively into and out of pressure contact with said conduit, said apparatus operable selectively for continuous or intermittent aspirating and dispensing liquid, (f) further means coupled to the rotatable member for sensing the mount of rotation when the motor is activated to aspire or dispense a predetermined mount of the liquid and for converting same into an electrical signal, (g) means for storing the electrical signal, and (h) means for retrieving the stored electrical signal and using same to activate the motor to aspirate or dispense a like amount of liquid. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 16)
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18. A hand-held automatic pipetting apparatus operable with any standard glass or plastic pipet for aspirating and dispensing a predetermined amount of liquid, the apparatus comprising:
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(a) a housing including a handle and a pipette adapter for holding a pipette, (b) an electric motor carried by the housing, (c) a peristaltic pump carded by the housing and driven by said motor, (d) conduit means communicating said pump with said pipette adapter when coupled to said pipette adapter, and (e) control means for activating the motor and pump, and a replaceable hydrophobic filter in the pipette adapter for use adjacent the mouth of a pipette secured thereto.
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19. A hand-held automatic pipetting apparatus operable with any standard glass or plastic pipet for aspirating and dispensing a predetermined amount of liquid, the apparatus comprising:
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(a) a housing including a handle and a pipette adapter for holding a pipette, (b) an electric motor carried by the housing, (c) a peristaltic pump carried by the housing and driven by said motor, (d) conduit means communicating said pump with said pipette adapter when coupled to said pipette adapter, and (e) control means for activating the motor and pump, wherein said pipette adapter comprises a resilient collar into which the mouth of a pipette is axially inserted and releasably secured.
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20. A hand-held automatic pipetting apparatus operable with any standard glass or plastic pipet for aspirating and dispensing a predetermined amount of liquid, the apparatus comprising:
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(a) a housing including a handle and a pipette adapter for holding a pipette, (b) an electric motor carried by the housing, (c) a peristaltic pump carded by the housing and driven by said motor, (d) conduit means communicating said pump with said pipette adapter when coupled to said pipette adapter, and (e) control means for activating the motor and pump, wherein said pump comprises a rotor with four circumferentially spaced rollers, a flexible conduit wrapped about said rollers, a connecting conduit coupled to and communicating each end of said conduit to the pipette adapter for communication with a pipette.
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21. A hand-held automatic pipetting apparatus operable with any standard glass or plastic pipet for aspirating and dispensing a predetermined amount of liquid, the apparatus comprising;
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(a) a housing including a handle and a pipette adapter for holding a pipette, (b) an electric motor carded by the housing, (c) a peristaltic pump carded by the housing and driven by said motor and having a rotatable member whose rotation is representative of the amount of liquid pumped of the pump, (d) conduit means communicating said pump with said pipette adapter, (e) control means for activating the motor and pump, (f) further means coupled to the rotatable member for sensing the amount of rotation when the motor is activated to aspire or dispense a predetermined amount of the liquid and for converting same into an electrical signal, (g) means for storing the electrical signal, and (h) means for retrieving the stored electrical signal and using same to activate the motor to aspirate or dispense a like amount of liquid wherein said control means comprises memory means operable with said further means for repeatedly aspirating or dispensing the same quantity of a liquid, or in manual mode and wherein said pump further comprises a venting conduit communicating said pump to the atmosphere.
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23. A hand-held automatic pipetting apparatus having a port operable with any standard glass or plastic pipette for aspirating and dispensing a liquid, comprising;
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a housing; an electric motor carded by said housing; a peristaltic pump coupled to be driven by the shaft of said electric motor; conduit means communicating said pump with said port, and control means connected to control said motor, and thereby said peristaltic pump; said control means comprising means for storing a value corresponding to a predetermined angular displacement of said motor shaft, and means responsive to said stored value for controlling said motor to rotate said shaft said predetermined angular displacement, further comprising a hydrophobic filter in said conduit means for inhibiting the flow of liquid therethrough.
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26. A hand-held automatic pipetting apparatus having a port operable with any standard glass or plastic pipette for aspirating and dispensing a liquid, comprising:
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a housing; an electric motor carried by said housing; a peristaltic pump coupled to be driven by the shaft of said electric motor; conduit means communicating said pump with said port, and control means connected to control said motor, and thereby said peristaltic pump; said control means comprising means for storing a value corresponding to a predetermined angular displacement of said motor shaft, and means responsive to said stored value for controlling said motor to rotate said shaft said predetermined angular displacement further comprising means for producing pulses that each correspond to a second predetermined angular displacement of said shaft, and said means for storing a value comprises means for storing a count corresponding to the number of said pulses.
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28. A hand-held automatic pipetting apparatus having a port operable with any standard glass or plastic pipette for aspirating and dispensing a liquid, comprising;
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a housing; an electric motor carried by said housing; a peristaltic pump coupled to be driven by the shaft of said electric motor; conduit means communicating said pump with said port, and control means connected to control said motor, and thereby said peristaltic pump; said control means comprising means for storing a value corresponding to a predetermined angular displacement of said motor shaft, and means responsive to said stored value for controlling said motor to rotate said shaft said predetermined angular displacement, wherein said means for storing a value comprises means for providing a count corresponding a cumulative angular displacement of said shaft during first and second opposite directions of rotation of said shaft, wherein said value is said count. - View Dependent Claims (29, 30)
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Specification