Surgical irrigation system
First Claim
1. A surgical irrigation system, comprising a reusable console and a disposable pump unit, said console including terminals on which a direct voltage is produced, and a seat for mechanically supporting said disposable pump unit, said pump unit including a pump/motor module including a pump, a motor for driving the pump, a housing for said pump and motor, and contacts on said housing electrically connected to the motor, said housing being shaped so that when the pump/motor module is placed in said console seat, the module is mechanically supported and the console terminals are in electrical contact with the contacts on the module connected to the motor.
1 Assignment
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Accused Products
Abstract
A surgical irrigation system comprises a reusable console and a disposable pump unit. The disposable pump unit includes a pump/motor module which includes a pump and a motor for driving the pump. The module is adapted to be mechanically supported within a seat in the console. The console produces a direct voltage at a pair of terminals within the seat. When the pump/motor is placed within the seat, the console terminals are connected to contacts on the module to provide a source of direct voltage for the pump motor. In the preferred embodiment, the disposable unit includes a handpiece and an irrigation valve. A flow sensing device within the outlet tube if the pump/motor module is actuated when the valve is open to turn the motor on and drive the pump. When the valve is closed, the flow sensing device turns the motor off.
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Citations
28 Claims
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1. A surgical irrigation system, comprising a reusable console and a disposable pump unit,
said console including terminals on which a direct voltage is produced, and a seat for mechanically supporting said disposable pump unit, said pump unit including a pump/motor module including a pump, a motor for driving the pump, a housing for said pump and motor, and contacts on said housing electrically connected to the motor, said housing being shaped so that when the pump/motor module is placed in said console seat, the module is mechanically supported and the console terminals are in electrical contact with the contacts on the module connected to the motor.
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16. For use with a surgical irrigation system which includes a reusable console having terminals on which a direct voltage is produced and a seat for mechanically supporting a disposable pump unit, a disposable pump unit comprising
a pump/motor module including a pump, a motor for driving said pump, a housing retaining said pump and motor, contacts on said housing connected to said motor, and inlet and outlet flow tubes, said housing being shaped so that when the pump/motor module is placed in said console seat, the module is mechanically supported and the console terminals are in electrical contact with the contacts connected to the motor.
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19. A surgical irrigation system, comprising
a pump having an inlet and an outlet, a motor for driving the pump, a flow sensor, said flow sensor comprising a float movable in a float chamber between upper and lower positions in the outlet of the pump, means for producing an optical beam which is blocked when the float is in a first position, and means for producing a voltage in response to movement of the float relative to the optical beam, the voltage produced when said optical beam is affected by said float (air immunity voltage) being greater than the voltage produced when said IR beam is affected by an air bubble.
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21. A surgical irrigation system according to claim 21, wherein said motor is responsive to a voltage from said sensor lower than said air immunity voltage after said motor has been actuated by said air immunity voltage.
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22. A surgical irrigation system, comprising a reusable console and a disposable pump unit,
said pump unit including a pump/motor module including a pump, a motor for driving the pump, a handpiece having an irrigation valve, and a flow sensing device comprising a float movable in a float chamber between upper and lower positions in the outlet of the pump, and a console including means for supporting said disposable pump unit, means for applying a voltage to said pump/motor module for operating said motor, and a sensor for producing an optical beam when the disposable pump unit is supported by said console and for producing a control voltage depending on the float position relative to said optical beam for turning said motor on.
Specification