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Publication numberUS1369112 A
Publication typeGrant
Publication dateFeb 22, 1921
Filing dateJun 17, 1920
Priority dateJun 17, 1920
Publication numberUS 1369112 A, US 1369112A, US-A-1369112, US1369112 A, US1369112A
InventorsWm Jones Truman
Original AssigneeWm Jones Truman
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dental nerve-broach
US 1369112 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

T. W. JONES.

DENTAL NERVE BROACH APPLICATION FILED JUNE 11, 1-920.

1,369, 1 1 2. Patented Feb. 22, 1921.

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TRUMAN WM. JONES, OF GOATESVILLE, PENNSYLVANIA DENTAL nnavnnnoncrr.

Specification of Letters Patent.

Patented Feb. 22, 1921.

Application filed Iune 17, 1920. Serial No. 389,542.

(.loatesville, in the county of Chester and State of Pennsylvania, have invented certain new and useful Improvements in Dental Nerve-Breaches, of which the following is a specification.

Dentists often find it difficult to manipulate nerve breaches during the action of withdrawing a nerve from the nerve cavity of a tooth in view of the fact that the saliva from the patients mouth often coats the finger-engaging portlon of the broach and thereby renders it slippery and in view of the necessary smallness of these broaches they very often slip or do not respond to the twisting or moving action of thedentist for the reason that the dentist cannot secure suiiicient finger grip upon the broach to enable him to manipulate it in a positive and desired manner.

One ob'ect of m r invention is to irovide a nerve broach which will insure a positive and secure finger grip when being used.

Another object is to so make my improved nerve broach that the finger gripping handle can be produced by the bending of the wire from which the main or stem portion is constructed without greatly adding to the weight of the broach.

These objects, and other advantageous ends which will be described hereinafter, I

line 5-5 of Fig. 1, and

Fig. 6 is a perspective view of my -im-' proved nerve broach.

Referring to the drawings, my improved nerve broach can be made from a single piece of wire and tapered at one end and I provided with barbs 7 in the usual manner. The opposite end of the wire is bent downwardly to provide a portion 8 which is spaced from the main stem 9 and this portion 8 is bent at 10 to provide an upwardly projectingextension'l1; the extreme end 12 or said extension being preferably arranged substantially at the same level with the bowed top 13 which is produced when making the portion 8. The bend 10 is made preferably in a plane at an angle to the plane of bend of the part 13 and a handle 14 is thus produced which permits a part of the fingers to project into the spaces between the stem 9 and portion 8 and between the porti0n'8 and the extension 11; thus insuring a secure finger purchase by the dentist while using the broach.

The construction ofmy improved broach as above described is such that during use a portion of the skin or flesh of the dentists fingers will enter or bulge into the longi tudinal spaces between the longitudinal bent portions of the handle and thereby provide a sure grip for the fingers and guard against accidental slipping of the broach during its required turning action when removing a nerve from the nerve cavity of a tooth. Furthermore by constructing the handle as above specified a twisting action thereo'fwill impart a slight eccentric action of the barbed main stem 9 and thereby serve to clean the wall of the nerve cavity of a tooth and to remove any part of the nerve which is positioned out of the central part of the cavity.

While I have described my invention as taking a particular form, it will be understood that the various parts of my invention may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but

[consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is l. A nerve broach made of wire and including an end portion forming a main stem, the opposite end of said wire being bent downward in substantially parallel spaced relation to said stem and then bent upwardly to provide an extension in spaced relation to said stem and firstmentioned spaced portion to insure a good finger gripping portion which when turned imparts a slight eccentric movement to said stem; sub stantially as described.

2. A nerve broach made of wire and ineluding an end portion forming a main stem, the opposite end of said wire being bent downward in spaced relation to said stem and then bent upwardly to provide an extension in spaced relation to said stem and first mentioned spaced portion, said stem and first mentioned spaced portion being in a plane extending at an angle to the plane including said first mentioned por- 10 tion and said extension to insure a good finger gripping portion which when turned imparts a slight eccentric movement to said stem; substantially as described.

In testimony whereof I have signed my name to this specification in the presence of 15 two subscribing witnesses.

TRUMAN WM. JONES. Witnesses ELIZABETH GARBE, CHAs. E. Poms.

Referenced by
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US4992048 *Apr 24, 1989Feb 12, 1991Goof Sven Karl LennartTool for cleansing tooth root canals
US5642998 *Jun 6, 1996Jul 1, 1997Riitano; FrancescoEndodontic instrument for rapid mechanical widening of the canal mouth and specific rectification of the first two thirds
US5775904 *Jun 30, 1997Jul 7, 1998Ultradent Products, Inc.Endodontic instrument for rapid mechanical widening of the canal mouth and specification of the first two thirds
US6042375 *Jan 28, 1998Mar 28, 2000Ultradent Products, Inc.Endodontic systems for progressively, sectionally and anatomically preparing root canals with specific instruments for each section having predetermined working lengths
US6045362 *Jan 28, 1998Apr 4, 2000Ultradent Products, Inc.Endodontic methods for progressively, sectionally and anatomically preparing root canals with specific instruments for each section having predetermined working lengths
US6059572 *Jun 3, 1999May 9, 2000Ultradent Products, Inc.Endodontic methods for the anatomical, sectional and progressive corono-apical preparation of root canals with three sets of dedicated instruments
US6379155Mar 27, 2000Apr 30, 2002Ultradent Products, Inc.Endodontic systems and methods for the anatomical, sectional and progressive corono-apical preparation of root canals with instruments utilizing stops
US6390819Jan 3, 2001May 21, 2002Ultradent Products, Inc.Endodontic systems and methods for the anatomical, sectional and progressive corono-apical preparation of root canals with dedicated stainless steel instruments and dedicated nickel/titanium instruments
US6558163May 3, 2001May 6, 2003Ultradent Products, Inc.Endodontic systems and methods for preparing upper portions of root canals with increasingly rigid files
US6585513May 3, 2001Jul 1, 2003Ultradent Products, Inc.Endodontic systems and methods for preparing apical portions of root canals with a set of files having large tapers
US6746245Feb 21, 2002Jun 8, 2004Ultradent Products, Inc.Methods for cleaning and shaping asymmetrical root canals in an anatomical fashion
US20090181341 *Jan 13, 2009Jul 16, 2009Lampert Chris JEndodontic Instrument
Classifications
U.S. Classification433/102
International ClassificationA61C5/02
Cooperative ClassificationA61C5/026
European ClassificationA61C5/02B3