DC powered surgical handpiece having a motor control circuit

Details DC powered surgical handpiece having a motor control circuit DC powered surgical handpiece having a motor control circuit

1992-04-16

1993-08-10

Ro, Bentsu

Electricity: motive power systems

Armature circuit control

Voltage control

388937, H02P 714

Patent

active

052352617

ABSTRACT:
A compact surgical handpiece comprises a motor energizable for moving a tool member, electric energy supply actuable for energizing the motor and a manually actuable trigger actuable to control motor operation. A motor control circuit interconnects the motor electric energy supply and trigger for running and braking the motor in response to actuation and release of the trigger. The control circuit includes a compact regulated voltage supply, a motor overcurrent limiting feature and a motor braking feature which is effective even if the operator fails to fully disconnect the electrical supply to the motor upon releasing the trigger.

REFERENCES:
patent: 4347474 (1982-08-01), Brooks et al.
patent: 4354223 (1982-10-01), Turnbull
patent: 4429269 (1984-01-01), Brown
patent: 4618812 (1986-10-01), Kawakami
patent: 4749923 (1988-06-01), Chieng
patent: 4752724 (1988-06-01), Radziwill et al.
patent: 4843300 (1989-06-01), Alderman
patent: 4879498 (1989-11-01), Shinohara et al.
patent: 4958948 (1990-09-01), Seima et al.
Drawing A (Stryker Part No. SK-3864, Command Console).
Drawing B (Stryker Brushless Decoder, EPLD No. EP320).
Drawing C (Stryker Part No. SK-6963, OP90 II Speed Control).
Stryker brochure entitled "New OrthoPower 90 cordless instruments--The Power and The Freedom" (7 pages).

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