JPS5936318U - Root canal length measuring device - Google Patents
Root canal length measuring deviceInfo
- Publication number
- JPS5936318U JPS5936318U JP13222482U JP13222482U JPS5936318U JP S5936318 U JPS5936318 U JP S5936318U JP 13222482 U JP13222482 U JP 13222482U JP 13222482 U JP13222482 U JP 13222482U JP S5936318 U JPS5936318 U JP S5936318U
- Authority
- JP
- Japan
- Prior art keywords
- root canal
- canal length
- measuring device
- length measuring
- oscillator
- 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.)
- Granted
Links
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例のブロック図、第２図は同上
の具体的な結線図、第３図は同上におけるバンドパスフ
ィルタの特性図である。
（符号の説明）、１・・・商用電源（電灯線電源）、２
・・・電源部、３・・・発振器、５・・・探針子、６・
・・接地側電極、９・・・バンドパスフィルタ、１０・
・・検出部。FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a specific wiring diagram of the same, and FIG. 3 is a characteristic diagram of the bandpass filter in the same. (Explanation of symbols), 1...Commercial power supply (light line power supply), 2
...power supply section, 3.. oscillator, 5.. probe, 6.
...Ground side electrode, 9...Band pass filter, 10.
··Detection unit.
Claims (1)
となる探針子を歯牙の根管に挿入し、その挿入深さに応
じた両電極間のインピーダンス値を検出して根管長を測
定するようにした根管長測定装置において、測定電流を
供給する発振器の発振周波数を商用電源の周波数より十
分′高く設定するとともに発振器の出力インピーダンス
を低く設定し、且つ探針子から得られる信号出力を発振
周波数に適合した特性を有するパッドパスフィルタを介
して検出部に送るように構成してなる根管長測定装置。 ゛[Claim for Utility Model Registration] One of the pair of electrodes is brought into contact with the oral mucosa, etc., and the probe serving as the other electrode is inserted into the root canal of the tooth, and the impedance between the two electrodes is determined according to the insertion depth. In a root canal length measuring device that measures root canal length by detecting the root canal length, the oscillation frequency of the oscillator that supplies the measurement current is set sufficiently higher than the frequency of the commercial power supply, and the output impedance of the oscillator is set low. and a root canal length measuring device configured to send a signal output obtained from the probe to a detection unit via a pad pass filter having characteristics matching the oscillation frequency.゛
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13222482U JPS5936318U (en) | 1982-08-30 | 1982-08-30 | Root canal length measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13222482U JPS5936318U (en) | 1982-08-30 | 1982-08-30 | Root canal length measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5936318U true JPS5936318U (en) | 1984-03-07 |
| JPS6220182Y2 JPS6220182Y2 (en) | 1987-05-22 |
Family
ID=30298670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13222482U Granted JPS5936318U (en) | 1982-08-30 | 1982-08-30 | Root canal length measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5936318U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5220944U (en) * | 1975-07-31 | 1977-02-15 | ||
| JPS5223507A (en) * | 1975-08-18 | 1977-02-22 | Kokusai Electric Co Ltd | Method of forming programs for crystal growth |
-
1982
- 1982-08-30 JP JP13222482U patent/JPS5936318U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5220944U (en) * | 1975-07-31 | 1977-02-15 | ||
| JPS5223507A (en) * | 1975-08-18 | 1977-02-22 | Kokusai Electric Co Ltd | Method of forming programs for crystal growth |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6220182Y2 (en) | 1987-05-22 |
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