JPH03191949A - Panoramic x-ray photographing apparatus - Google Patents
Panoramic x-ray photographing apparatusInfo
- Publication number
- JPH03191949A JPH03191949A JP1330866A JP33086689A JPH03191949A JP H03191949 A JPH03191949 A JP H03191949A JP 1330866 A JP1330866 A JP 1330866A JP 33086689 A JP33086689 A JP 33086689A JP H03191949 A JPH03191949 A JP H03191949A
- Authority
- JP
- Japan
- Prior art keywords
- slider
- ray
- shape
- stepping motor
- photographed
- 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
Links
- 210000002455 dental arch Anatomy 0.000 abstract 3
- 230000007246 mechanism Effects 0.000 description 4
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
Abstract
PURPOSE:To perform sharper X-ray photographing in focus by moving an X-ray generator and a film cassette holder on an oval track corresponding to the pattern of every kind of the shape of the dental arch of a person to be photographed. CONSTITUTION:Two motors 13, 16 are composed of stepping motors and the shape of the dental arch of a person 51 to be photographed is discriminated by measuring the width of the head of the person 51 to be photographed by a head measuring apparatus 80 and the oval track most matched with the shape of the dental shape is drawn to move an X-ray generator 22 and a cassette holder 23. By this constitution, the X-ray tomographic region peculiar to panoramic X-ray photographing can be always fitted to each tooth of the dental arch and a sharp X-ray photograph is obtained.
Description
【発明の詳細な説明】
［産業上の利用分野１
本発明は、主として歯科治療に供される歯列及び歯根部
を顎全体に亘ってＸ線撮影する機能を備えるパノラマＸ
線撮影装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention provides a panoramic
It relates to a radiography device.
Ｌ従来技術とその課題］
歯科診療のためのパノラマＸ線撮影は、対向端部にＸ線
発生器とフィルムカセツテホルダを有するアームを水平
回転せしめながら前後方向へ移動せしめて、Ｘ線発生器
とフィルムカセツテホルダとを、・半楕円形状を呈する
歯列とできるだけ相似する楕円軌道で移動させ、これに
より各部位の歯へピントが合うようにして行って。L Prior Art and its Problems] Panoramic X-ray photography for dental treatment involves horizontally rotating an arm that has an X-ray generator and a film cassette holder at opposite ends and moving it back and forth. and the film cassette holder are moved in an elliptical orbit that is as similar as possible to the tooth row exhibiting a semi-elliptical shape, thereby bringing the teeth of each region into focus.
いる。There is.
このためには、遊星歯車機構を用いたり、あるいはカム
機構やリンク機構を用いてＸ線発生器をフィルムカセツ
テホルダが楕円軌道上を移動させられるようにしである
が、いずれも構造が複雑となるばかりか、楕円軌道は一
定で、これを変えるにはギアやカムあるいはリンク機構
を変更せねばならず、これらの変更は歯科医院では事実
１不１１（能である。For this purpose, a planetary gear mechanism is used, or a cam mechanism or a link mechanism is used to move the X-ray generator and film cassette holder on an elliptical orbit, but in both cases the structure is complicated. Moreover, the elliptical trajectory is constant, and to change it, the gears, cams, or link mechanisms must be changed, and these changes are actually impossible in a dental clinic.
Claims (1)
動できるように設けたスライダと、 （ｂ）前記スライダの下部に垂直軸線まわりに水平回転
可能に取り付けられ、一端にはＸ線発生器を、他端には
Ｘ線を受光するフィルムカセッテを装填するカセッテホ
ルダを有し、かつスライダに取り付けた旋回用ステッピ
ングモータにより水平回転させられるアームを備え、 （ｃ）前記スライダに固定したナットが、ヘッドケース
内に固定した前後進用ステッピングモータにより駆動さ
れる前後方向の送りねじに螺合し、同ステッピングモー
タの正逆回転によりスライダが前後方向に移動させられ
るようにし、（ｄ）かつ、人頭を両側よりスライドして
狭窄する挾手体を有し、当該挾手支持点に連動ならしめ
る可変抵抗器を具備する頭部測定装置とを備えるパノラ
マＸ線撮影装置。[Scope of Claims] (a) A slider provided in a head case having a hole in the bottom plate so as to be movable in the front-rear direction; (b) A slider attached to the lower part of the slider so as to be horizontally rotatable about a vertical axis; (c) has a cassette holder at the other end into which a film cassette for receiving X-rays is loaded, and is horizontally rotated by a turning stepping motor attached to the slider; A nut fixed to the slider is threaded onto a forward/backward feed screw driven by a forward/backward stepping stepping motor fixed within the head case, so that the slider can be moved forward/backward by forward/reverse rotation of the stepping motor. , (d) and a cephalometric device having a grip body that slides and narrows the human head from both sides, and a cephalometric device that is equipped with a variable resistor that is linked to the support point of the grip. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1330866A JPH03191949A (en) | 1989-12-20 | 1989-12-20 | Panoramic x-ray photographing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1330866A JPH03191949A (en) | 1989-12-20 | 1989-12-20 | Panoramic x-ray photographing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03191949A true JPH03191949A (en) | 1991-08-21 |
Family
ID=18237395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1330866A Pending JPH03191949A (en) | 1989-12-20 | 1989-12-20 | Panoramic x-ray photographing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03191949A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007202886A (en) * | 2006-02-03 | 2007-08-16 | Asahi Roentgen Kogyo Kk | Dental panoramic x-ray equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS551053A (en) * | 1978-06-19 | 1980-01-07 | Daido Steel Co Ltd | Electrode gripper for arc furnace |
| JPS5933198U (en) * | 1982-08-27 | 1984-03-01 | カシオ計算機株式会社 | Electronic musical instrument with tape recorder |
| JPS6117503A (en) * | 1984-07-04 | 1986-01-25 | Katayama Chem Works Co Ltd | Wood preservative |
| JPS62183749A (en) * | 1986-02-04 | 1987-08-12 | オリオン−イテイメ・オ−ワイ | Method and apparatus for taking photograph by radioactive rays |
| JPS6353817A (en) * | 1986-08-21 | 1988-03-08 | 住友電気工業株式会社 | Cable rotation detector for continuously vulcanizing machine |
| JPS6353816A (en) * | 1986-08-21 | 1988-03-08 | 住友電気工業株式会社 | Cable rotation preventor for continuously vulcanizing machine |
-
1989
- 1989-12-20 JP JP1330866A patent/JPH03191949A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS551053A (en) * | 1978-06-19 | 1980-01-07 | Daido Steel Co Ltd | Electrode gripper for arc furnace |
| JPS5933198U (en) * | 1982-08-27 | 1984-03-01 | カシオ計算機株式会社 | Electronic musical instrument with tape recorder |
| JPS6117503A (en) * | 1984-07-04 | 1986-01-25 | Katayama Chem Works Co Ltd | Wood preservative |
| JPS62183749A (en) * | 1986-02-04 | 1987-08-12 | オリオン−イテイメ・オ−ワイ | Method and apparatus for taking photograph by radioactive rays |
| JPS6353817A (en) * | 1986-08-21 | 1988-03-08 | 住友電気工業株式会社 | Cable rotation detector for continuously vulcanizing machine |
| JPS6353816A (en) * | 1986-08-21 | 1988-03-08 | 住友電気工業株式会社 | Cable rotation preventor for continuously vulcanizing machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007202886A (en) * | 2006-02-03 | 2007-08-16 | Asahi Roentgen Kogyo Kk | Dental panoramic x-ray equipment |
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