Lavage system with linear motor
First Claim
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1. Medical, dental or therapeutic lavage apparatus comprising:
- a chamber having an inlet port and an outlet port;
a reciprocating means for imparting a pulsatile flow to liquid moving from the inlet port to the outlet port;
a linear electric motor having a drive member;
means for supporting said motor and said chamber in stable relationship;
means for connecting the motor drive member to said reciprocating means to produce said pulsatile flow;
means for producing an electrical power signal and for applying said signal to said motor;
means for varying the frequency of said power signal, said means including a manually settable frequency control; and
means for varying the amplitude of said power signal, said means including a manually settable amplitude control.
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Abstract
A linear motor drives a reciprocating pump to produce a flow of lavage fluid. In the preferred embodiment the motor is a moving coil linear motor and the coil is attached to one plate of a drive member comprising a pair of circular plates connected by three shafts that slide in bearings passing through the motor core. Springs having varying coil spacing are seated between the plates and motor core to variably damp the motor'"'"'s motion, with the strongest damping at the ends of its reciprocating stroke.
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Citations
12 Claims
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1. Medical, dental or therapeutic lavage apparatus comprising:
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a chamber having an inlet port and an outlet port; a reciprocating means for imparting a pulsatile flow to liquid moving from the inlet port to the outlet port; a linear electric motor having a drive member; means for supporting said motor and said chamber in stable relationship; means for connecting the motor drive member to said reciprocating means to produce said pulsatile flow; means for producing an electrical power signal and for applying said signal to said motor; means for varying the frequency of said power signal, said means including a manually settable frequency control; and means for varying the amplitude of said power signal, said means including a manually settable amplitude control. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification