JPH0432708U - - Google Patents

Info

Publication number
JPH0432708U
JPH0432708U JP1990075018U JP7501890U JPH0432708U JP H0432708 U JPH0432708 U JP H0432708U JP 1990075018 U JP1990075018 U JP 1990075018U JP 7501890 U JP7501890 U JP 7501890U JP H0432708 U JPH0432708 U JP H0432708U
Authority
JP
Japan
Prior art keywords
output
binary
amplifier
analog switch
differential amplifier
Prior art date
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.)
Pending
Application number
JP1990075018U
Other languages
English (en)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1990075018U priority Critical patent/JPH0432708U/ja
Priority to US07/667,995 priority patent/US5112224A/en
Publication of JPH0432708U publication Critical patent/JPH0432708U/ja
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0534—Measuring electrical impedance or conductance of a portion of the body for testing vitality of teeth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/04—Measuring instruments specially adapted for dentistry
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00022—Sensing or detecting at the treatment site
    • A61B2017/00026—Conductivity or impedance, e.g. of tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/04—Measuring instruments specially adapted for dentistry
    • A61C19/042—Measuring instruments specially adapted for dentistry for determining the position of a root apex

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Epidemiology (AREA)
  • Dentistry (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Surgery (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Neurology (AREA)
  • Neurosurgery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Description

【図面の簡単な説明】
第１図は従前の歯科用根尖位置検出装置の説明
図、第２図は本考案を実施せる歯科用根尖位置検
出装置の使用状態の全体の概要説明図、第３図は
同上の要部のブロツクダイアグラムによる構成図
である。 図面符号の説明、Ａ……歯科用根尖位置検出装
置、ａ……器体、Ｄ……ダイヤル、Ｍ……メータ
ー、Ｎ……針、Ｓ……スイツチ、ＳＷ……自動較
正スイツチ、ＵＰ……アツプの側の接点、ＤＯＷ
Ｎ……ダウンの側の接点、１……歯、１０……根
管、２……リーマー、３……片電極、４……ホル
ダー、４０，４１……発振器、４２……ミキシン
グ、４３……アンプ、４４，４６……バンドパス
フイルター、４５，４７……整流器、４８……差
動アンプ、４９……ＤＣアンプ、５０……ワンシ
ヨツト、５１，５２……アナログスイツチ、５３
……バイナリーアツプダウンカウンター、５４…
…コパレーター、５５……Ｄ／Ａコンバーター。

Claims (1)

    【実用新案登録請求の範囲】
  1. リーマー２と患者の人体に接触する片電極３と
    の間に流す２種類の異なる周波数の電流を発生す
    る２つの発振器４０，４１と、それら電流のそれ
    ぞれのインピーダンスの変化の差分△Ｖを検出す
    る差動アンプ４８と、それの出力を増巾してメー
    ターＭに入力さすＤＣアンプ４９と、そのＤＣア
    ンプ４９のアウトに入力側が接続して出力側が二
    接点アナログスイツチ５２に接続するコンパレー
    ター５４と、前記二接点アナログスイツチ５２の
    切換作動により、入力される周波数をカウントダ
    ウンする状態とカウントアツプする状態とに切換
    わるバイナリーアツプダウンカウンター５３と、
    入力側が前記バイナリーアツプダウンカウンター
    ５３のアウトに接続し出力側が前記差動アンプ４
    ８にその差動アンプのオフセツトを動かすよう接
    続するＤ／Ａコンバーター５５と、オン作動によ
    り前記発振器４０，４１の一方から発信される周
    波数信号を前述の二接点アナログスイツチ５２を
    介してバイナリーアツプダウンカウンター５３に
    流す自動較正スイツチＳＷと、を具備せしめたこ
    とを特徴とする歯科用根尖位置検出装置。
JP1990075018U 1990-07-13 1990-07-13 Pending JPH0432708U (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1990075018U JPH0432708U (ja) 1990-07-13 1990-07-13
US07/667,995 US5112224A (en) 1990-07-13 1991-03-12 Dental detection apparatus for position of root apex

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990075018U JPH0432708U (ja) 1990-07-13 1990-07-13

Publications (1)

Publication Number Publication Date
JPH0432708U true JPH0432708U (ja) 1992-03-17

Family

ID=13564020

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990075018U Pending JPH0432708U (ja) 1990-07-13 1990-07-13

Country Status (2)

Country Link
US (1) US5112224A (ja)
JP (1) JPH0432708U (ja)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3113095B2 (ja) * 1991-09-30 2000-11-27 株式会社モリタ製作所 歯科用根管診療装置
FR2741524A1 (fr) * 1995-11-27 1997-05-30 Xelyx Procede et dispositif perfectionne de localisation de l'apex d'une dent, au moyen d'un signal rectangulaire
ES2113318B1 (es) * 1996-05-16 1999-01-01 Pina Mario Longo Perfeccionamientos en aparatos de estomatologia.
US5759159A (en) * 1996-09-25 1998-06-02 Ormco Corporation Method and apparatus for apical detection with complex impedance measurement
FR2759897B1 (fr) * 1997-02-25 1999-05-14 Roger Heraud Procede et dispositif perfectionne de mesure et de localisation de l'apex d'une dent
US6425875B1 (en) * 1999-12-27 2002-07-30 Forum Engineering Technologies (96) Ltd. Method and device for detection of a tooth root apex
US20020058232A1 (en) * 2000-09-22 2002-05-16 Weiss Ervin I. Method for root canal treatment: technique, tools and materials for mobilizing medicaments and cements into dentinal tubules
US6520773B1 (en) * 2001-09-10 2003-02-18 Joseph C. Weber Endodontic file
US20040101809A1 (en) * 2001-09-21 2004-05-27 Weiss Ervin I Device, method and materials for mobilizing substances into dentinal tubules in root canal treatment
WO2003063724A2 (en) * 2002-01-28 2003-08-07 Lampert Christopher J Endodontic instrument
US6872075B2 (en) * 2002-03-21 2005-03-29 John Edward Regan Endodontic file with a metallic conductor as part of the plastic handle to facilitate use of electronic apex locators
US6968229B2 (en) * 2003-05-06 2005-11-22 Ormco Corporation Apex locating system
DE112004001035B4 (de) * 2003-06-11 2014-09-11 Toei Electric Co., Ltd. Vorrichtung zur Positionsermittlung einer Zahnwurzelspitze
FR2868686B1 (fr) * 2004-04-09 2007-04-06 Spinevision Sa Dispositif pour le suivi de la penetration d'un instrument dans une structure anatomique comprenant au moins une partie longitudinale amovible
US20060154199A1 (en) * 2005-01-07 2006-07-13 Randall Maxwell Wireless root canal apex locator
DE102005039455B4 (de) * 2005-08-18 2007-06-06 Forschungszentrum Jülich GmbH Implantat zum Einführen in Hohlkörper, Cochleaimplantat, Anordnung aus einem Implantat und Verfahren zur Herstellung
US8388340B2 (en) * 2005-11-21 2013-03-05 Techdent Technologies Ltd. Apical position locator
US20070218420A1 (en) * 2006-03-16 2007-09-20 Philip John Syribeys Endodontic instrument with non-conductive coating and method for locating the apex of a tooth
EP3311770B1 (en) 2006-04-20 2023-06-21 Sonendo, Inc. Apparatus for treating root canals of teeth
US10835355B2 (en) 2006-04-20 2020-11-17 Sonendo, Inc. Apparatus and methods for treating root canals of teeth
US7980854B2 (en) 2006-08-24 2011-07-19 Medical Dental Advanced Technologies Group, L.L.C. Dental and medical treatments and procedures
US12114924B2 (en) 2006-08-24 2024-10-15 Pipstek, Llc Treatment system and method
US20090148810A1 (en) * 2007-02-21 2009-06-11 Randall Maxwell Wireless root canal apex locator
US20100239999A1 (en) * 2007-06-21 2010-09-23 Haim Rozenboim Multi-frequency apex locator
US7993138B2 (en) * 2007-08-21 2011-08-09 Buchanan L Stephen Apex locator for endodontic procedures
US20090130623A1 (en) * 2007-11-20 2009-05-21 Techdent Technologies Ltd. Method and apparatus for effecting dental measurements using a body-contacting electrode
AU2010319321B2 (en) 2009-11-13 2016-01-14 Sonendo, Inc. Liquid jet apparatus and methods for dental treatments
CA2815219A1 (en) 2010-10-21 2012-04-26 Sonendo, Inc. Apparatus, methods, and compositions for endodontic treatments
US9179843B2 (en) 2011-04-21 2015-11-10 Hassan Ghaderi MOGHADDAM Method and system for optically evaluating proximity to the inferior alveolar nerve in situ
CN110623765A (zh) 2012-03-22 2019-12-31 索南多股份有限公司 用于清洁牙齿的设备和方法
US10631962B2 (en) 2012-04-13 2020-04-28 Sonendo, Inc. Apparatus and methods for cleaning teeth and gingival pockets
US10363120B2 (en) 2012-12-20 2019-07-30 Sonendo, Inc. Apparatus and methods for cleaning teeth and root canals
ES2883954T3 (es) 2012-12-20 2021-12-09 Sonendo Inc Aparato de limpieza de dientes y de conductos radiculares
CA2910809A1 (en) 2013-05-01 2014-11-06 Sonendo, Inc. Apparatus and methods for treating teeth
CA2911415A1 (en) 2013-06-26 2014-12-31 Sonendo, Inc. Apparatus and methods for filling teeth and root canals
RU2654399C2 (ru) * 2016-02-26 2018-05-17 Федеральное государственное бюджетное учреждение науки Удмуртский федеральный исследовательский центр Уральского отделения Российской академии наук Устройство для электродиагностики твердых тканей зуба
US10806544B2 (en) 2016-04-04 2020-10-20 Sonendo, Inc. Systems and methods for removing foreign objects from root canals
USD997355S1 (en) 2020-10-07 2023-08-29 Sonendo, Inc. Dental treatment instrument

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0194478A (ja) * 1987-10-06 1989-04-13 Nec Corp ベクトルデータ処理装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU178505B (en) * 1979-05-14 1982-05-28 Tibor Dery Device for determining and digital signalling the position of root treating instruments in the root duct
US3916529A (en) * 1973-11-08 1975-11-04 Calvin Mitchell Mousseau Method of and instrument for determining the length of a root canal
US3993044A (en) * 1975-03-10 1976-11-23 Mcguffin William G Method and device for determining the length of a root canal of a tooth
JPS5925363Y2 (ja) * 1976-03-05 1984-07-25 株式会社デントロニクス 歯科における根管長測定装置
JPS573303Y2 (ja) * 1978-04-20 1982-01-21
US4526179A (en) * 1983-01-28 1985-07-02 Leonard Salesky Digital apical foramen locating apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0194478A (ja) * 1987-10-06 1989-04-13 Nec Corp ベクトルデータ処理装置

Also Published As

Publication number Publication date
US5112224A (en) 1992-05-12

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