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Patentes

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Número de publicaciónUS371664 A
Tipo de publicaciónConcesión
Fecha de publicación18 Oct 1887
Número de publicaciónUS 371664 A, US 371664A, US-A-371664, US371664 A, US371664A
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos: USPTO, Cesión de USPTO, Espacenet
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US 371664 A
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(No Model.)

J. BRANNAN 8: W. E. STONE.

'ELECTRIC PORGFPS.

110.371,664. Patented 001;. 18, 1887.

//v VEA/70H By )www ZEW Q60; A fr0/Mfr N PETERS. PhowLnhegmphur. wnhingmmllc.

UNITED STATES PATENT OFFICE..

JOHN BRANNAN AND VILLIAM E. STONE, OF DENVER, COLORADO.

ELECTRIC FORCEPS.

SPECIFICATION forming part of Letters Patent No. 371,664-I d'ated October 18, 1887.

Application filed November 29, 1886. Serial No. 220,185.

To all whom it may concern.-

Be it known ,that we, JOHN BRANNAN and WILLIAM E. STONE, both citizens of the United States, residing at Denver, in the county of Arapahoe and State of Colorado, have invented a new and useful Electric Forceps, of which the following is a specification.

Our invention relates to surgical instruments through which currents of electricity are passed for the purpose of anzestheticising the nerves with which it comes in contact; and the object of our invention is to provide a means of conducting a current of electricity to the parts operated on through the instrument used, especially through the forceps used in dentistry. We obtain these objects by the mechanism illustrated in the accompanying drawings, in which Figure l is a side view of a pair of dental forceps, showing one handle insulated and where the connecting wires are attached. Fig. 2 is a pair of forceps, showing the insulation between the arms. Fig. 3 is a section through the rivet which holds the arms in place and the arms and insulation, and Fig. et is a sectional View illustrating another way of connecting the electric conductors with the jaws.

Si milar letters refer to similar parts throughout the several views.

The arm a of the forceps is insulated from the arm where it passes by Or through b, and also is b insulated from the rivet d, which holds a and b together, as shown at c, Fig. 3. There is also an insulator placed on or around one or bot-h of the arms or handles of the forceps to prevent the operator from receiving the current, which insulator is represented by ein the drawings. Thus it will be seen that by attaching the positive pole of an electric battery to one of the armsuof the instrunient and the negative pole to the other arm a connection will be made between them as soon as the beak touches a conductor like a toot-h in an animals'jaw, and the current will (No model.)

pass through this conductor and form a circuit. It has been practically demonstrated that the passage of such a current through a nerve will act as an aneesthetic and make the nerve so operated upon insensible of pain, which would with ordinary means be very acute.

We are aware that previous to our invention a current of electricity has been used for the purpose; but with the means used for applying it (which are very inconvenient and impracticable) the full benefits have not been Obtained. We do not conne ourselves to this exact manner of connecting the current with the beak of the forceps, as it may be passed through the jaws of the beak alone, which may be insulated from the arms or handles; or it may be conducted to the tooth by a wire or other conductorlaid in slots or holes in the beaks andinsulated up to the point where the end of the wire or other conductor reaches the tooth or nerves. (See Fig. 2, dotted lines, marked f, and Fig. 4..)

Therefore, what we claim, and desire to secure by Letters Patent of the United States of America, is-

1. In surgical or dental forceps, the combination of a forceps having a hole or slotin the jaws of the beak in|which a wire or other conductor of electricity is placed for the purpose of carrying a current of electricity to a nerve, for the purpose substantially as described and set forth.

2. The dental forceps herein described, having their arms or jaws pivoted together with insulating material between theirinner facingsurfaces where the jaws cross each other and surrounding the pivoting pin, and electricV conductors connected to said jaws, substantially as described.

JOHN BRANNAN.

WILLIAM E. STONE.

Witnesses:

J. A. POLE, P. S. HALE.

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Clasificaciones
Clasificación cooperativaA61B18/1492