US322265A - donaldson - Google Patents
donaldson Download PDFInfo
- Publication number
- US322265A US322265A US322265DA US322265A US 322265 A US322265 A US 322265A US 322265D A US322265D A US 322265DA US 322265 A US322265 A US 322265A
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- US
- United States
- Prior art keywords
- instrument
- shaft
- donaldson
- canal
- nerve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000004140 cleaning Methods 0.000 description 6
- 238000007790 scraping Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 210000003414 Extremities Anatomy 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
- A61C5/42—Files for root canals; Handgrips or guiding means therefor
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Neurosurgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Description
(No Model.) Y R.B. DONALDSON.
DENTAL INSTRUMENT.
Patented July 14,1885- WITNBSSES:
f ATTORNEY 'ROBERT B. DONALDSON, WASHINGTON, DISTRICT OF COLUMBIA.
DENTAL INSTRUMENT.
SPECIFICATION forming part of Letters Patent No. 322,265, dated July 14, 1885.
' Application mm1 May 5, isst. (No model.)
To a/ZZ whom it may concern:
Be it known that I, ROBERT BRUCE DON- ALDsoN, of Washington, in the District of Columbia, have invented a new and useful Improvement in Dental Instrument-srand I do declare that the following is a full andaccurate description of the same, reference being had to the accompanying drawings, wherein- Figure 1 is a perspective view of my instrument greatly enlarged. Fig. 2 represents the same operative size. Fig. 3 represents the same operative size bent to illustrate how it `may be prepared for use.
scrape and cleanse the walls of the canal.l
These instruments are generally made by the dentist himself, the barbs being formed by a knife or ne file. The action of such an instrument is irregular and uncertain, and the barbs frequently break off in the canal and are difficult to remove. To remove as far as possible the liability of breaking, the instrument is generally made from untempered metal, and this detracts from the efficiency.
My invention consists of an instrument, which I prefer to make from piano-wire, reduced at the point to a requisite size to enter the nerve-canal, and provided at and near its point with a series of scraping-teeth, projecting in all directions, and preferably arranged in a spiral line around kthe shaft of the instrument.
In the drawings, A is the shaft of the instrument, about two and a half inches in length, and provided with a suitable handle, B. Piano -wire has a temper admirably adapted for instruments of this description.
It is sufficiently hard for all purposes, yet i is tough and iieXible, and will bear repeated bendings. I therefore prefer to make the shaft from steel piano-wire of proper gage,
reduced toward its extremity to the proper" I then make a series.
degree of attenuation. y of cuts, d, inclined to the axis of the shaft A, which separate portions of the metal of said shaft and bend it outwardly, as shown; and
other from that accidentally too deep penei w tration which causes the barb of the ordinary y instrument to be broken off.
I prefer to arrange the Scrapers e in a 'will canse the instrument to embed itself,
and thereby'render the removal of the nerve substance comparatively easy.
Having described my invention, I claim as newl. A dental instrument for scraping and cleaning the nerve-canal in the root of a tooth, consisting of a substantially rigid shaft, A, provided on all sides with a series of inclined cuts, d, and projecting Scrapers e, substantially as set forth.
2. A dental instrument for scraping and cleaning the nerve-canal in the root of a tooth, consisting of a substantially rigid shaft,
A, provided with aseries of cuts, d, and resultant Scrapers c, inclined to the axis of said shaft and arranged on a spiral line around the same.
3. A dental instrument for scraping and cleaning the nerve-canal of a tooth, consisting of a substantially rigid shaft, A, of steel y piano-wire,'reduced to the desired attenuation toward thepoint, and provided with a series of inclined cuts, d, and projecting Scrapers e, substantially as set forth.
ROBERT DONALDSON.
Witnesses:
JAMEs I. STABLER, ALBERT G. HALL.
Publications (1)
Publication Number | Publication Date |
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US322265A true US322265A (en) | 1885-07-14 |
Family
ID=2391402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US322265D Expired - Lifetime US322265A (en) | donaldson |
Country Status (1)
Country | Link |
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US (1) | US322265A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4824370A (en) * | 1985-01-11 | 1989-04-25 | Micro-Mega | Dental drill |
US4889487A (en) * | 1988-11-23 | 1989-12-26 | Lovaas Leeland M | Endodontic files |
US5320530A (en) * | 1992-12-17 | 1994-06-14 | Fong Cheng D | Endodontic apparatus for retrofill cavity preparation |
US5642998A (en) * | 1995-06-06 | 1997-07-01 | Riitano; Francesco | Endodontic instrument for rapid mechanical widening of the canal mouth and specific rectification of the first two thirds |
US5857852A (en) * | 1997-11-19 | 1999-01-12 | The Kerr Corporation | Endodontic file with non-helical flutes |
US6042375A (en) * | 1995-06-06 | 2000-03-28 | Ultradent Products, Inc. | Endodontic systems for progressively, sectionally and anatomically preparing root canals with specific instruments for each section having predetermined working lengths |
US6045362A (en) * | 1995-06-06 | 2000-04-04 | Ultradent Products, Inc. | Endodontic methods for progressively, sectionally and anatomically preparing root canals with specific instruments for each section having predetermined working lengths |
US6059572A (en) * | 1995-06-06 | 2000-05-09 | Ultradent Products, Inc. | Endodontic methods for the anatomical, sectional and progressive corono-apical preparation of root canals with three sets of dedicated instruments |
US6379155B1 (en) | 1996-06-06 | 2002-04-30 | Ultradent Products, Inc. | Endodontic systems and methods for the anatomical, sectional and progressive corono-apical preparation of root canals with instruments utilizing stops |
US6390819B2 (en) | 1995-06-06 | 2002-05-21 | Ultradent 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 |
US6558163B2 (en) | 1995-06-06 | 2003-05-06 | Ultradent Products, Inc. | Endodontic systems and methods for preparing upper portions of root canals with increasingly rigid files |
US6585513B2 (en) | 1995-06-06 | 2003-07-01 | Ultradent Products, Inc. | Endodontic systems and methods for preparing apical portions of root canals with a set of files having large tapers |
US20030211442A1 (en) * | 2002-05-10 | 2003-11-13 | Michael Abel | Barbed endodontic instrument |
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0
- US US322265D patent/US322265A/en not_active Expired - Lifetime
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4824370A (en) * | 1985-01-11 | 1989-04-25 | Micro-Mega | Dental drill |
US4889487A (en) * | 1988-11-23 | 1989-12-26 | Lovaas Leeland M | Endodontic files |
US5320530A (en) * | 1992-12-17 | 1994-06-14 | Fong Cheng D | Endodontic apparatus for retrofill cavity preparation |
US6059572A (en) * | 1995-06-06 | 2000-05-09 | Ultradent Products, Inc. | Endodontic methods for the anatomical, sectional and progressive corono-apical preparation of root canals with three sets of dedicated instruments |
US5775904A (en) * | 1995-06-06 | 1998-07-07 | Ultradent Products, Inc. | Endodontic instrument for rapid mechanical widening of the canal mouth and specification of the first two thirds |
US6042375A (en) * | 1995-06-06 | 2000-03-28 | Ultradent Products, Inc. | Endodontic systems for progressively, sectionally and anatomically preparing root canals with specific instruments for each section having predetermined working lengths |
US6045362A (en) * | 1995-06-06 | 2000-04-04 | Ultradent Products, Inc. | Endodontic methods for progressively, sectionally and anatomically preparing root canals with specific instruments for each section having predetermined working lengths |
US5642998A (en) * | 1995-06-06 | 1997-07-01 | Riitano; Francesco | Endodontic instrument for rapid mechanical widening of the canal mouth and specific rectification of the first two thirds |
US6390819B2 (en) | 1995-06-06 | 2002-05-21 | Ultradent 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 |
US6558163B2 (en) | 1995-06-06 | 2003-05-06 | Ultradent Products, Inc. | Endodontic systems and methods for preparing upper portions of root canals with increasingly rigid files |
US6585513B2 (en) | 1995-06-06 | 2003-07-01 | Ultradent Products, Inc. | Endodontic systems and methods for preparing apical portions of root canals with a set of files having large tapers |
US6746245B2 (en) | 1995-06-06 | 2004-06-08 | Ultradent Products, Inc. | Methods for cleaning and shaping asymmetrical root canals in an anatomical fashion |
US6379155B1 (en) | 1996-06-06 | 2002-04-30 | Ultradent Products, Inc. | Endodontic systems and methods for the anatomical, sectional and progressive corono-apical preparation of root canals with instruments utilizing stops |
US5857852A (en) * | 1997-11-19 | 1999-01-12 | The Kerr Corporation | Endodontic file with non-helical flutes |
US20030211442A1 (en) * | 2002-05-10 | 2003-11-13 | Michael Abel | Barbed endodontic instrument |
US7018205B2 (en) * | 2002-05-10 | 2006-03-28 | Abelity, Llc | Barbed endodontic instrument |
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