Electric heating – Heating devices – Tool or instrument
Patent
1984-09-04
1986-01-07
Bartis, A.
Electric heating
Heating devices
Tool or instrument
30140, 1283031, 219233, 219533, 338150, H05B 102, H01C 1026, A61B 1738
Patent
active
045635706
ABSTRACT:
A battery operated cautery includes a cylindrical housing configured to retain a voltage source, such as a plurality of batteries, and an electrically heated cautery tip carried by the front end of the housing and adapted to be selectively energized from the power source by a manually operable switch on the housing. The switch includes a contact element having rear end connected to a terminal of the power source and a front end movable into and out of engagement with a terminal electrode of the electrically heated tip to make and break the circuit between the tip and the power source by a operation of a depressible switch actuator on housing. A removable safety cover configured to mount on the front of the housing encloses the switch actuator and heating tip to prevent inadvertent switch actuation and to protect the tip when the cautery is being stored or transported. The safety cover includes an electrical insulating member which projects into the housing to a position between the front end of the movable contact element and the terminal electrode of the tip when the cover is mounted on the housing to mechanically lock the switch actuator against depression and to positively electrically insulate the front end of the contact element from the tip terminal electrode, thereby preventing inadvertent energization of the electrically heated tip. A rotatably adjustable variable resistor may be mounted on the rear end of the housing to allow the temperature of the heated tip to be selectively varied.
REFERENCES:
patent: 3234356 (1966-02-01), Babb
patent: 3613682 (1971-10-01), Naylor
patent: 3978312 (1976-08-01), Barton et al.
patent: 4108181 (1978-08-01), Saliaris
patent: 4359052 (1982-11-01), Staub
Bartis A.
Fisher, III Arthur W.
Suncoast Medical Manufacturing, Inc.
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