초록 ▼

A suction and irrigation handpiece is disclosed having a trigger that cooperates with a locking mechanism to lock the trigger into one a plurality of preselected angular positions. The trigger has a plurality of grooves on an inner surface that removably couple with a tooth of the locking mechanism.

A suction and irrigation handpiece is disclosed having a trigger that cooperates with a locking mechanism to lock the trigger into one a plurality of preselected angular positions. The trigger has a plurality of grooves on an inner surface that removably couple with a tooth of the locking mechanism. The locking mechanism includes a shaft rotatably connected through the housing, a locking arm connected to the shaft, and the tooth at the far end of the shaft. The electrical connections between batteries and a motor in the handpiece also are arranged to facilitate manufacture and uniformly energize the pump at a preset position of the trigger. The handpiece thus has a first conductive lead connected between one pole of the battery and a contact port that is relatively far from the trigger pivot, and a second conductive lead is connected between one port of the motor and the contact port. These two leads form an open circuit at the contact port that may be closed by a conductor connected to the trigger. The other port of the motor is electrically connected to the other pole of the batteries.

대표청구항 ▼

[ Having thus described the invention what we desire to claim and secure by Letters Patent is:] [1.] A hand-held suction irrigation device comprising:a housing;a motor within the housing;a battery within the housing to energize the motor;a plurality of leads extending from the motor and the battery,

[ Having thus described the invention what we desire to claim and secure by Letters Patent is:] [1.] A hand-held suction irrigation device comprising:a housing;a motor within the housing;a battery within the housing to energize the motor;a plurality of leads extending from the motor and the battery, the leads forming a normally open circuit between the motor and battery at a contact port, the leads including a first conductor extending between at least one terminal of the battery and the contact port and the second conductor extending between at least one terminal of the motor and the contact port;the first conductor further including a first leaf spring contact extending from at least one of the positive or negative terminals of the battery;the second conductor including a second leaf spring contact extending from at least one of the terminals of the motor;the first leaf spring contact being normally biased against the second leaf spring contact;a trigger movably connected to the housing, the trigger having an electrically conductive contact that slides across the plurality of leads and selectively closes the open circuit, at the contact port, to energize the motor;an aperture formed by the housing; anda pin removably extending through the aperture, the pin preventing electrical contact between the first leaf spring contact and the second leaf contact.