CN2451074Y - Canalis radicis dentis working length measuring apparatus - Google Patents
Canalis radicis dentis working length measuring apparatus Download PDFInfo
- Publication number
- CN2451074Y CN2451074Y CN 00256264 CN00256264U CN2451074Y CN 2451074 Y CN2451074 Y CN 2451074Y CN 00256264 CN00256264 CN 00256264 CN 00256264 U CN00256264 U CN 00256264U CN 2451074 Y CN2451074 Y CN 2451074Y
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- CN
- China
- Prior art keywords
- measuring
- sliding bar
- measuring body
- working length
- steel wire
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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 - Fee Related
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Abstract
The utility model discloses a tooth root canal working length measuring device which is provided with a measuring body 1. The utility model is characterized in that the front end of the measuring body is provided with a measuring head 2 of which the inner part is provided with a measuring steel wire 3, and the inner hole of the measuring body 1 is provided with a slide rod 5. The back end of the slide rod 5 is provided with a pointer 8, the front end is provided with a nut 4 which clamps the measuring steel wire 3 and positions the front end of the slide rod, and the middle part of the slide rod is a compression spring 6. The measuring body is provided with a scale 7 at the position corresponding to the pointer. The utility model is used for measuring the structure of the bending shape of heads, all the teeth in mouths can be measured conveniently, and the accurate length of root canals can be accurately reacted through the number reading.
Description
This utility model belongs to medical apparatus and instruments, and particularly the dentistry or the department of stomatology are measured the device of tooth root canal working length.
In the prior art for the measurement of tooth pulp canal, several different methods is arranged, but the employing hand dipping, accuracy is relatively poor, uses apparatus measures, though accuracy is higher, but cost is also higher, and, measure for some crowd's incompatibility as X-ray film etc., therefore need a kind of tooth root canal working length device of design, proposed the purpose of this utility model.
The purpose of this utility model is the deficiency that exists in the present tooth root canal working length in order to overcome, and designs a kind of tooth root canal working length device.
The purpose of this utility model is to reach according to following structure, tooth root canal working length device, this device has the measuring body that can hand 1, it is characterized in that front end in measuring body has a gauge head 2 that has measuring steel wire 3 in it, sliding bar 5 of endoporus assembling in measuring body 1, a pointer 8 is arranged in the rear end of this sliding bar 5, the front end of sliding bar has a nut 4 to clamp measuring steel wire 3 and this sliding bar front end is located, on sliding bar, be equipped with one the compression spring 6, on the measuring body with sliding bar 5 on pointer 8 corresponding positions one rule 7 is arranged.
The utility model has the advantages that simple in structurely, safe and convenient to use, can be fit to the teeth patterning of various crowd and various different shapes.
Following description of drawings, accompanying drawing are structure cutaway views of the present utility model, and the numbering meaning of each sequence number in the accompanying drawings is: 1, measuring body, 2, gauge head, 3, measuring steel wire, 4 nuts, 5, sliding bar, 6, the compression spring, 7, rule, 8, pointer.
Below in conjunction with the specific embodiment in the accompanying drawing, describe structure of the present utility model and use in detail.With reference to accompanying drawing, tooth root canal working length device of the present utility model, has the measuring body that to hand 1, it is characterized in that front end in measuring body has a gauge head 2 that has measuring steel wire 3 in it, sliding bar 5 of endoporus assembling in measuring body 1, a pointer 8 is arranged in the rear end of this sliding bar 5, the front end of sliding bar has a nut 4 to clamp measuring steel wire 3 and this sliding bar front end is located, on sliding bar, be equipped with a compression spring 6, on measuring body, one rule 7 arranged with the corresponding position of pointer.Be its normal position in the accompanying drawing, sliding bar is positioned at the pointer indication in the position of the right-hand member numeral 0 of rule 7 under the effect of spring 6 and nut 4, can carry out trace adjustment by nut.During use, front end with gauge head 2, aim at the position that needs to measure tooth, promote with thumb, the rear end of sliding bar 5, front end up to measuring steel wire 3, arrive the bottom of tooth pulp canal, at this moment, the reading on the rule promptly is the active length (or being called tooth pulp canal working length) of tooth pulp canal, because steel wire is to have elasticity and better rigidity material, so can in use produce bending, therefore, the shaped design of gauge head 2 is crooked structure, to give full play to these physical characteristics of measuring steel wire.Thereby this device is convenient especially for the measurement of the tooth, particularly distomolar in full oral cavity, because this bending property of measuring steel wire can also be measured crooked root pipe.According to statistical data, people's tooth root canal working length is generally below 24 millimeters, and therefore, the length range of rule is positioned at the 0-30 millimeter, can satisfy the needs of measurement.After measuring end, loosen the pushing force of thumb to sliding bar, sliding bar promptly retreats under the effect of spring, by nut 4 location, realizes automatically reseting at last.
Claims (1)
1, a kind of tooth root canal working length device, this device has the measuring body that can hand 1, it is characterized in that front end in measuring body has a gauge head 2 that has measuring steel wire 3 in it, sliding bar 5 of endoporus assembling in measuring body 1, a pointer 8 is arranged in the rear end of this sliding bar 5, the front end of sliding bar has a nut 4 to clamp measuring steel wire 3 and this sliding bar front end is located, on sliding bar, be equipped with a compression spring 6, on measuring body, one rule 7 arranged with the corresponding position of pointer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00256264 CN2451074Y (en) | 2000-11-06 | 2000-11-06 | Canalis radicis dentis working length measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00256264 CN2451074Y (en) | 2000-11-06 | 2000-11-06 | Canalis radicis dentis working length measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2451074Y true CN2451074Y (en) | 2001-10-03 |
Family
ID=33613009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00256264 Expired - Fee Related CN2451074Y (en) | 2000-11-06 | 2000-11-06 | Canalis radicis dentis working length measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2451074Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101828976A (en) * | 2010-05-04 | 2010-09-15 | 深圳市龙成科技有限公司 | High temperature-resistant disinfected connecting line for measuring tooth root |
| CN101325921B (en) * | 2005-12-05 | 2012-02-29 | 比恩-空气控股有限公司 | Accessory for root tip locating device |
| CN101325922B (en) * | 2005-10-14 | 2012-06-27 | 希尔氏宠物营养品公司 | Method and tool for oral substrate measurement in animals |
-
2000
- 2000-11-06 CN CN 00256264 patent/CN2451074Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325922B (en) * | 2005-10-14 | 2012-06-27 | 希尔氏宠物营养品公司 | Method and tool for oral substrate measurement in animals |
| CN101325921B (en) * | 2005-12-05 | 2012-02-29 | 比恩-空气控股有限公司 | Accessory for root tip locating device |
| CN101828976A (en) * | 2010-05-04 | 2010-09-15 | 深圳市龙成科技有限公司 | High temperature-resistant disinfected connecting line for measuring tooth root |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |