CN104739525A - Reciprocating type root canal file with left-rotating edge - Google Patents
Reciprocating type root canal file with left-rotating edge Download PDFInfo
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- CN104739525A CN104739525A CN201410013364.3A CN201410013364A CN104739525A CN 104739525 A CN104739525 A CN 104739525A CN 201410013364 A CN201410013364 A CN 201410013364A CN 104739525 A CN104739525 A CN 104739525A
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- root canal
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- canal file
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Abstract
The invention discloses a reciprocating type root canal file with a left-rotating edge, which is a main surgical instrument in root canal therapy in the modern stomatology. The reciprocating type root canal file with the left-rotating edge comprises a handle part, a rod part, and a file body composed of a working area with a spiral edge part and a tip guide head, wherein the working area with the spiral edge part is conical and the rotating direction of the edge part is left, and a root canal file length mark line is engraved at the tail end of the rod part. The instrument disclosed by the invention has a hand type and a machine type according to the different types of the rod part, the instrument is arranged through a special motor in case of being operated for a machine, and the instrument enters the root canal of a tooth in a cutting manner at first, and then reversely rotates to release, so as to form a reciprocating motion; one-time 360-degree rotating cutting is finished by three times of the reciprocating motion; due to a special reciprocating angle design, the instrument keeps working in a relatively non-pressure state in the own elastic limit, meanwhile, the cutting angle is larger than the reverse rotating angle, so that the instrument is capable of entering a good instant cutting state while avoiding the file body from being deformed or broken, and the file body enters a good guidance along the root canal.
Description
Technical field
The present invention relates to a kind of root canal appliance, for carrying out the root canal of tooth.
Background technology
Root canal is familiar with by everybody already, and the corona of pathological changes tooth is opened by it, clean also root canal filling.Say more specifically, root canal needs to use a whole set of meticulous and resilient root canal file, with clean root pipe, and moulding to root pipe, the machine file that dentist is connected with file or motor by hands, rotates and lift in root pipe.By in the operating process of root pipe rotary pulling, root canal file is made to go deep into the inner diseased region simultaneously machined away in approach of root pipe.
The existing root canal file be made up of helical form blade, its hand of spiral is plus thread (dextrorotation), when rotating clockwise root canal file, the blade that works enter root pipe cut to remove diseased region to root canal wall simultaneously time, the cutting due to the work blade existing circumference in operation in plus thread direction has again the incision along direction of rotation.Therefore, when the speed rotated into is too fast or root canal file size differs larger with actual root pipe caliber, blade penetraction depth will be made excessive, thus produce circumferential cutting force be not enough to cut off time, will stuck phenomenon be there is.
If root canal file still further rotates when being obstructed in root pipe, now apparatus can be subject to distortion power, and the result of metal can change.This change can be reversible also may be irreversible, the angle rotated by force when this depends on that apparatus is obstructed.In this case, the rotation of 0 to 400 degree all can not cause the irreversible change of metal structure, and the rotation more than 400 degree will cause the irreversible change of metal structure.Finally, the place that apparatus is rotating about 1100 degree fractures.Interval between 0 to 400 degree becomes between elastic region, and the interval from 400 degree to snap point (about 1100 degree) is plastic phase, and the transition point between elasticity phase with plastic phase is called as elastic limit.Elastic limit is approximately 400 degree in this case.If rotate apparatus engage with dentin but still continue to rotate, will there is irreversible structural change in the metal material of apparatus.This situation occurs repeatedly, and certain irreversible change all can occur every minor metal finally causes torsional fatigue and causes fractureing.
So doctor to carry out in endodontic procedure often meticulous, and work efficiency is very low, even so still can not the complete generation with avoiding the problems referred to above.
Summary of the invention
The object of the invention is to overcome above-mentioned root canal file in practical operation while Problems existing, improve its pliability and stock-removing efficiency and propose a kind of reciprocating left revolving blade root canal file.
Concrete employing following technical proposal:
A kind of reciprocating left revolving blade root canal file, it comprises a shank and bar portion, and the file body of band spiral blade working area and most advanced and sophisticated seeker composition.Band helical edges working area is cone-shaped and its blade rotation direction is left revolving blade, and the tail end in bar portion is carved with root canal file length mark line.The sectional area shape of file body is circle, triangle or tetragon etc., and file body adopts nitinol alloy wire or medical strong elastic stainless steel silk material to make.Pyramidal file body, its tapering is 0.01 ~ 0.10.
Hands use and machine can be divided into two kinds according to its shank pattern difference.Handle driven file, its shank adopts directly injection molded with file body; Machine root canal file, its shank adopts copper or stainless steel to be mechanically connected with file body.
When doing machine operation, arranged by distinctive motor, first apparatus of the present invention enters tooth root pipe in the mode of cutting, and rotates backward release formation one reciprocating motion subsequently, has moved back and forth 360 ° of rotary cuttings for 3 ~ 6 times.In reciprocating situation, the less operation of angle of rotation more pacify with, cut by left-handed rotation, release is rotated in dextrorotation, the anglec of rotation of left-hand cut is 90 ~ 270 °, and the anglec of rotation of dextrorotation release is 30 ~ 180 °, thus file physical ability is advanced towards the tip of a root automatically.Due to distinctive reciprocal angle design, this apparatus works keep relatively stress-free state in himself elastic limit under, its cutting angle is larger than reverse angle simultaneously, therefore it can avoid file body deformability or while fractureing, and enters the instant kilter that cuts and file body enters good guidance quality along root pipe.
When doing hands operation, the hand of spiral in the working cutting edge portion frustrated due to root pipe is left-handed, make the apparatus direction of blade contrary with the hand of spiral of blade, namely can not produce along the incision in direction of rotation rotating on direction of body of file, but instant cutting enters immediately, immediately enter instant excellent operation duty of cutting.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of machine with reciprocating left revolving blade root canal file.
Fig. 2 is the structural representation of a kind of hands with reciprocating left revolving blade root canal file.
Fig. 3 is cross section is leg-of-mutton reciprocating left revolving blade root canal file file body schematic diagram.
The reciprocating left revolving blade root canal file file body schematic diagram of Fig. 4 to be cross section be tetragon.
Fig. 5 is cross section is circular reciprocating left revolving blade root canal file file body schematic diagram.
Detailed description of the invention
The present invention may be made material object by with other forms many, and is not limited to this manufacture cited below.And several specific embodiments of following discloses, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Fig. 1 ~ 5, describe compound left revolving blade root canal file of the present invention, and this root canal file is that metal material is made, and adopt rustless steel or nickel titanium alloy.
Fig. 1 is the reciprocating left revolving blade root canal file of a kind of machine, this root canal file comprises a shank 1 and bar portion 2, and the file body 3 of band spiral blade working area 4 and most advanced and sophisticated seeker 5 composition, band helical edges working area 4 is cone-shaped and its blade rotation direction is left revolving blade, the tail end in bar portion 2 is carved with root canal file length mark line 5, and its shank 1 adopts copper or stainless steel to be mechanically connected with file body 3.
Fig. 2 is the reciprocating left revolving blade root canal file of a kind of hands, this root canal file comprises a shank 1a and bar portion 2, and the file body 3 of band spiral blade working area 4 and most advanced and sophisticated seeker 5 composition, band helical edges working area 4 is cone-shaped and its blade rotation direction is left revolving blade, the tail end in bar portion 2 is carved with root canal file length mark line 5, and its shank 1a adopts directly injection molded with file body 3.
Fig. 3 ~ 5 are leg-of-mutton reciprocating left revolving blade root canal file for the embodiment of some reciprocating left revolving blade root canal file file bodies: Fig. 3 is file body section 7a; Fig. 4 files the reciprocating left revolving blade root canal file that body section 7b is tetragon; Fig. 5 is file body section 7c is circular reciprocating left revolving blade root canal file.
Claims (6)
1. a reciprocating left revolving blade root canal file, it comprises a shank and bar portion, and the file body of band spiral blade working area and most advanced and sophisticated seeker composition, it is characterized in that: band helical edges working area is cone-shaped and its blade rotation direction is left revolving blade, the tail end in bar portion is carved with root canal file length mark line, hands use and machine can be divided into two kinds according to its shank pattern difference.The sectional area shape of file body is circle, triangle or tetragon etc., and file body adopts nitinol alloy wire or medical strong elastic stainless steel silk material to make.Described pyramidal file body, its tapering is 0.01 ~ 0.10.
2. compound left revolving blade root canal file according to claim 1, is characterized in that: during hands operation, and its shank adopts directly injection molded with file body; During machine operation, its shank adopts copper or stainless steel to be mechanically connected with file body.
3. compound left revolving blade root canal file according to claim 1, is characterized in that: when doing machine operation, arranged by distinctive motor, first this apparatus enters tooth root pipe in the mode of cutting, and rotates backward release subsequently, forms a reciprocating motion.360 ° of rotary cuttings are moved back and forth for 3 times.
4. compound left revolving blade root canal file according to claim 3, is characterized in that: this apparatus cuts with left-handed rotation, has and rotates dynamic release.The anglec of rotation of left-hand cut is 90 ~ 270 °, and the anglec of rotation of dextrorotation release is 30 ~ 180 °, thus file physical ability is advanced towards the tip of a root automatically.
5. compound left revolving blade root canal file according to claim 3, it is characterized in that: due to distinctive reciprocal angle design, this apparatus works keep relatively stress-free state in himself elastic limit under, its cutting angle is larger than reverse angle simultaneously, therefore it can avoid file body deformability or while fractureing, and enters the instant kilter that cuts and file body enters good guidance quality along root pipe.
6. compound left revolving blade root canal file according to claim 1, it is characterized in that: during hands operation, the hand of spiral in the working cutting edge portion frustrated due to root pipe is left-handed, make the apparatus direction of blade contrary with the hand of spiral of blade, namely can not produce along the incision in direction of rotation rotating on direction of body of file, but instant cutting enters immediately, immediately enter instant excellent operation duty of cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013364.3A CN104739525B (en) | 2014-01-01 | 2014-01-01 | Reciprocating left revolving blade root canal file |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013364.3A CN104739525B (en) | 2014-01-01 | 2014-01-01 | Reciprocating left revolving blade root canal file |
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| CN104739525A true CN104739525A (en) | 2015-07-01 |
| CN104739525B CN104739525B (en) | 2018-02-23 |
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| CN201410013364.3A Active CN104739525B (en) | 2014-01-01 | 2014-01-01 | Reciprocating left revolving blade root canal file |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106580486A (en) * | 2016-12-30 | 2017-04-26 | 佛山科学技术学院 | Root canal continuous enlargement method |
| CN108670448A (en) * | 2018-05-04 | 2018-10-19 | 常州益锐医疗器材有限公司 | A kind of root canal conveyer |
| CN111936080A (en) * | 2018-04-10 | 2020-11-13 | 马尼株式会社 | Dental file |
| CN113081324A (en) * | 2021-03-29 | 2021-07-09 | 华中科技大学同济医学院附属协和医院 | Root canal file for preventing fracture and manufacturing method thereof |
| CN113873965A (en) * | 2019-08-22 | 2021-12-31 | 马尼株式会社 | Dental root canal treatment instrument |
| CN115337120A (en) * | 2022-08-22 | 2022-11-15 | 常州益锐医疗器材有限公司 | Root canal file |
| US11890155B2 (en) | 2018-08-29 | 2024-02-06 | Mani, Inc. | Dental file |
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| US5713736A (en) * | 1996-05-01 | 1998-02-03 | Tulsa Dental Products, L.L.C. | Endodontic dental instrument |
| US5980250A (en) * | 1995-12-11 | 1999-11-09 | Tycom Dental Corporation | Endodontic instrument |
| CN2683057Y (en) * | 2004-03-25 | 2005-03-09 | 龙小平 | Root canal file with left revolving blade |
| CN201012131Y (en) * | 2007-03-19 | 2008-01-30 | 宋文琴 | Tooth treatment needle |
| CN103379875A (en) * | 2011-05-27 | 2013-10-30 | 株式会社中西 | Dental handpiece control device |
| CN203943750U (en) * | 2014-01-01 | 2014-11-19 | 龙小平 | Reciprocating left revolving blade root canal file |
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2014
- 2014-01-01 CN CN201410013364.3A patent/CN104739525B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5980250A (en) * | 1995-12-11 | 1999-11-09 | Tycom Dental Corporation | Endodontic instrument |
| US5713736A (en) * | 1996-05-01 | 1998-02-03 | Tulsa Dental Products, L.L.C. | Endodontic dental instrument |
| CN2683057Y (en) * | 2004-03-25 | 2005-03-09 | 龙小平 | Root canal file with left revolving blade |
| CN201012131Y (en) * | 2007-03-19 | 2008-01-30 | 宋文琴 | Tooth treatment needle |
| CN103379875A (en) * | 2011-05-27 | 2013-10-30 | 株式会社中西 | Dental handpiece control device |
| CN203943750U (en) * | 2014-01-01 | 2014-11-19 | 龙小平 | Reciprocating left revolving blade root canal file |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106580486A (en) * | 2016-12-30 | 2017-04-26 | 佛山科学技术学院 | Root canal continuous enlargement method |
| CN111936080A (en) * | 2018-04-10 | 2020-11-13 | 马尼株式会社 | Dental file |
| CN111936080B (en) * | 2018-04-10 | 2022-02-18 | 马尼株式会社 | Dental file |
| US11504211B2 (en) | 2018-04-10 | 2022-11-22 | Mani, Inc. | Dental file |
| CN108670448A (en) * | 2018-05-04 | 2018-10-19 | 常州益锐医疗器材有限公司 | A kind of root canal conveyer |
| US11890155B2 (en) | 2018-08-29 | 2024-02-06 | Mani, Inc. | Dental file |
| CN113873965A (en) * | 2019-08-22 | 2021-12-31 | 马尼株式会社 | Dental root canal treatment instrument |
| US11771522B2 (en) | 2019-08-22 | 2023-10-03 | Mani, Inc. | Dental root canal treatment instrument |
| CN113081324A (en) * | 2021-03-29 | 2021-07-09 | 华中科技大学同济医学院附属协和医院 | Root canal file for preventing fracture and manufacturing method thereof |
| CN113081324B (en) * | 2021-03-29 | 2022-02-25 | 华中科技大学同济医学院附属协和医院 | Root canal file for preventing fracture and manufacturing method thereof |
| CN115337120A (en) * | 2022-08-22 | 2022-11-15 | 常州益锐医疗器材有限公司 | Root canal file |
| CN115337120B (en) * | 2022-08-22 | 2023-08-22 | 常州益锐医疗器材有限公司 | root canal file |
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| CN104739525B (en) | 2018-02-23 |
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