CN104000661B - Oral cavity enlarging is filed - Google Patents
Oral cavity enlarging is filed Download PDFInfo
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- CN104000661B CN104000661B CN201410271246.2A CN201410271246A CN104000661B CN 104000661 B CN104000661 B CN 104000661B CN 201410271246 A CN201410271246 A CN 201410271246A CN 104000661 B CN104000661 B CN 104000661B
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- oral cavity
- handle
- cervical region
- file
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Abstract
The invention discloses a kind of oral cavity enlarging file, belong to the technical field of medical apparatus and instruments structure.File, in order to solve existing oral cavity enlarging, the problem that the tooth root pipe of patient that cannot be little to posterior teeth root canal and oral cavity opening degree is treated, the invention provides a kind of oral cavity enlarging file, including working end, cervical region and handle；Described working end is connected with described cervical region；Described cervical region is flexibly connected with described handle, and can change, with being flexibly connected of described handle, the length that described oral cavity enlarging is filed by described cervical region.The oral cavity enlarging file that the present invention proposes, it is possible to change the length of self, it is possible to the tooth of the patient little to oral cavity backteeth and oral cavity opening degree carries out root canal.
Description
Technical field
The present invention relates to a kind of oral cavity enlarging file, belong to the technical field of the medical apparatus and instruments structure for the treatment of odontopathy, specifically belong to the technical field of the medical apparatus and instruments structure relating to oral cavity enlarging file.
Background technology
The disease such as pulpitis, periapical periodontitis is the odontopathy that we are frequently encountered.Therapeutic Method is generally selected root canal, needs to use oral cavity enlarging file to remove the inflamed human dental pulp in root pipe and downright bad material in endodontic procedure.
Fig. 1 is existing oral cavity enlarging file 40, and oral cavity enlarging file 40 includes working end 41, cervical region 42 and handle 43.The most clinical conventional oral cavity enlarging file 40 mainly having two kinds of length, length is respectively 31mm (millimeter) and 35mm (millimeter).When carrying out root canal, need first with the direction along tooth major axis, oral cavity enlarging file 40 to be put into oral cavity, arrive after needing to carry out above the tooth of root canal, then tooth root pipe is inserted in working end 41, move at tooth root pipe second-cut file, to remove the inflamed human dental pulp in root pipe and downright bad material.But the oral cavity opening degree of some patient is little, opening degree is about at 20mm (millimeter) to 25mm (millimeter), the least, thus have no idea that oral cavity enlarging file 40 is put into oral cavity with the direction along tooth major axis and insert tooth root pipe, the most just cannot be carried out root canal.For when in oral cavity, the root pipe of backteeth is treated, because the space of oral cavity backteeth there is less, existing oral cavity enlarging file cannot be inserted vertically into posterior teeth root canal, the most just backteeth cannot be carried out root canal.
Summary of the invention
The present invention proposes a kind of oral cavity enlarging file, to solve the problem that the tooth root pipe of the patient that existing oral cavity enlarging file cannot be little to posterior teeth root canal and oral cavity opening degree is treated.
The oral cavity enlarging file of the present invention, including working end, cervical region and handle；Described working end is connected with described cervical region；Described cervical region is flexibly connected with described handle, and can change, with being flexibly connected of described handle, the length that described oral cavity enlarging is filed by described cervical region.
The oral cavity enlarging file that the present invention proposes, the length of self can be changed, when so the tooth the patient less to oral cavity backteeth or oral cavity opening degree carries out root canal, before oral cavity enlarging file to put into oral cavity along tooth long axis direction, first the contraction in length of oral cavity enlarging file, after oral cavity put into by oral cavity enlarging file, then oral cavity enlarging file elongation, vertically insert root pipe, then carry out root canal.The oral cavity enlarging file of the present invention also is able under conditions of tooth is suffered from reservation carry out root canal thoroughly to suffering from tooth.
Wherein, the mode that described cervical region is flexibly connected with described handle is: described cervical region is provided with external screw thread, described handle is provided with through hole, and described through hole is provided with the female thread that the external screw thread with described cervical region matches, described handle and described cervical region to be passed through together with screw-threaded engagement.
Wherein, the outer surface of described handle is provided with groove.When clamping oral cavity enlargement files with tweezers or other clamping devices, groove is as bite, it is possible to ensure that oral cavity enlarging is filed by firm clamping.
Wherein, the pitch of the female thread of described handle is 0.4 millimeter-1 millimeter.
Wherein, the mode that described cervical region is flexibly connected with described handle is: described handle is provided with cavity and chute；Described chute is arranged on the outer surface of this handle；Described cavity is positioned at below described chute, and through with described chute；Described cervical region inserts in described cavity；One end of described cervical region is provided with through hole, and the diameter in the middle part of described through hole is more than the diameter at two ends；Being provided with moving handle in described through hole, the outer surface of described moving handle is respectively arranged with first protruding and the second projection；Described first projection and the second projection are annular；Described first projection is positioned at outside described through hole, and described second projection is positioned at inside described through hole；Described moving handle can drive cervical region to slide in chute；The bottom land of described chute is provided with at least one recess；Being provided with spring in described recess, described spring is fixed on the bottom of described recess, and the deep equality of drift and described recess.
Wherein, the bottom land of described chute is provided with at least three recess.
The bottom land of chute arranges at least three recess, by this at least three recess, cervical region can be fixed at least three position, thus obtain the oral cavity enlarging file of at least three different length.
Wherein, the mode that described cervical region is flexibly connected with described handle is: described handle is provided with internal holes, groove, and described internal holes is positioned at the lower section of described groove；Described handle is provided with gear；Described groove is positioned at the outer surface of described handle, is provided with bonding jumper in described groove, and described bonding jumper can slide in described groove, and described bonding jumper is made up of magnetic material；The top of described groove is provided with two crossbeams；The bottom of described gear is positioned in the internal holes of described handle, and in the grooves, top is exposed from the surface of handle at middle part；Described cervical region is and the rack shapes of described gear matches；Described cervical region inserts in described internal holes and is connected with the engagement of described gear；Described gear is made up of ferromagnetic material.
Wherein, the bottom of described groove is provided with card.When oral cavity enlarging file is in unused state, card between bonding jumper and gear, separates bonding jumper and gear, prevents bonding jumper to be attracted in teeth groove by gear, and then makes gear to rotate.
Wherein, described bar surface is machined with roller stricture of vagina, and described roller stricture of vagina is uniformly distributed at the outer surface of described bonding jumper.Roller stricture of vagina can increase the frictional force of bar surface, more laborsaving when stirring bonding jumper with hands.
Wherein, the Surface Machining at described handle has roller stricture of vagina, described roller stricture of vagina to be uniformly distributed at the outer surface of described handle.Roller stricture of vagina can increase the frictional force of handle surfaces, is easy to doctor and grips during use.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing oral cavity enlarging file；
Fig. 2 is the schematic top plan view of the first embodiment of the present invention；
Fig. 3 is the schematic diagram of the another kind of shape of the handle of the first embodiment of the present invention；
Fig. 4 is the schematic top plan view of the second embodiment of the present invention；
Fig. 5 is the Fig. 4 generalized section along H-H direction；
Fig. 6 is the generalized section of the cervical region of the second embodiment of the present invention；
Fig. 7 is the generalized section that the cervical region of the second embodiment of the present invention is connected with moving handle；
Fig. 8 is the generalized section that the moving handle of the second embodiment of the present invention is fixed in recess；
Fig. 9 is the generalized section of the moving handle compression spring to greatest extent of the second embodiment of the present invention；
Figure 10 is cervical region and the moving handle generalized section after spring reset of the second embodiment of the present invention；
Figure 11 is the schematic top plan view of the third embodiment of the present invention；
Figure 12 is the Figure 11 generalized section along B-B direction.
Detailed description of the invention
Below in conjunction with Fig. 2 Figure 12, technical scheme is described in detail.During introducing, " forward " is directed to the direction on the figure left side, and " backward " is directed to the direction on the right of figure.
Embodiment one:
Fig. 2 is the schematic top plan view of the first embodiment of the present invention, and oral cavity enlarging file 10 includes working end 11, cervical region 12 and handle 13.Working end 11 sets threaded cylinder or cone for surface.Cervical region 12 is cylinder, and cervical region 12 is provided with external screw thread.Handle 13 is provided with through hole along its axial direction, the axis of through hole is identical with the axis of handle 13, is provided with the female thread that the external screw thread with cervical region 12 matches in through hole, and cervical region 12 inserts in the through hole of handle 13, handle 13 forms screw gear together with passing through screw-threaded engagement with cervical region 12.The outer surface of handle 13 is provided with around the handle annular groove of 13 1 weeks 14, when using the instrument holding handles 13 such as tweezers, using groove 14 as bite, clamps more firm.Groove 14 can also be two grooves of the axisymmetrical relative to handle 13, plays the effect making handle 13 by more firm clamping equally.
The using method of the first embodiment of the present invention: before oral cavity enlarging file 10 is put into oral cavity, handle 13 is clamped with tweezers or other clamping devices, rotate cervical region 12, cervical region 12 is made partly or entirely to be collapsible into handle 13, after oral cavity enlarging files 10 length shortening to put into oral cavity, oral cavity enlarging file 10 is put into oral cavity with the direction of vertical tooth.After oral cavity enlarging file 10 is positioned at above the tooth of root canal to be carried out, the annular groove 14 of handle 13 is clamped with tweezers or other clamping devices, cervical region 12 is rotated the most again with finger, cervical region 12 is made completely or partially to stretch out handle 13, so that the oral cavity enlarging file 10 suitable length of arrival, tooth root pipe is inserted in working end 11, moves at root pipe second-cut file, to remove the inflamed human dental pulp in root pipe and downright bad material.After removing completes, clamp handle 13 with tweezers or other clamping devices, rotate cervical region 12, make the length reduction of oral cavity enlarging file 10, after narrowing down to suitable length, oral cavity enlarging file is taken out from oral cavity.
Fig. 3 is the schematic diagram of the another kind of shape of handle 13, there is negative area 15 at the middle part of handle 13, and such handle 13 just can not set groove 14, during with tweezers or other clamping device holding handles 13, negative area 15 is as bite, and handle 13 equally can be by more firm clamping.
Wherein, handle 13 forms screw gear with cervical region 12 together with screw-threaded engagement, and handle 13 rotation is turned around, and the displacement of cervical region 12 is 0.4mm (millimeter)-1mm (millimeter), preferably 0.5mm (millimeter).The screw thread of handle 13 is single thread, and pitch is 0.4mm (millimeter)-1mm (millimeter), preferably 0.5mm (millimeter).Measure the length of tooth root pipe with X-ray before root canal, just can draw the length of the oral cavity enlarging file 10 of needs, the most just can calculate oral cavity enlarging file 10 to reach Len req and need the number of turns of rotary handle 13, rotary handle 13 is to the required number of turns, the most both ensured that oral cavity enlarging file 10 can extend into root pipe end, root pipe is cleared up completely, is prevented from again oral cavity enlarging file 10 and gos deep into root Guan Taishen and expose root pipe.
Preferably, the Surface Machining of handle 13 has roller stricture of vagina, roller stricture of vagina to be uniformly distributed at the outer surface of handle 13, with increase frictional force be easy to doctor grip.
The oral cavity enlarging file that the present invention proposes, the length of self can be changed, when so the tooth the patient less to oral cavity backteeth or oral cavity opening degree carries out root canal, before oral cavity enlarging file to put into oral cavity along tooth long axis direction, first the contraction in length of oral cavity enlarging file, after oral cavity put into by oral cavity enlarging file, then oral cavity enlarging file elongation, vertically insert root pipe, then carry out root canal.The oral cavity enlarging file of the present invention also is able under conditions of tooth is suffered from reservation carry out root canal thoroughly to suffering from tooth.
Embodiment two:
Fig. 4 is the schematic top plan view of the second embodiment of the present invention, and oral cavity enlarging file 200 includes working end 211, cervical region 212 and handle 213, and handle 213 generally bar structure, working end 211 sets threaded cylinder or cone for surface.
Fig. 5 is the Fig. 4 generalized section along H-H direction, and handle 213 is provided with cavity 203 and chute 201；Cavity 203 is positioned at the inside of handle 213, and cavity 203 is coaxial with handle 213, i.e. the axis of cavity 203 is identical with the axis of handle 213.Chute 201 is positioned at the outer surface of handle 213, and chute 201 is through with cavity 203, and chute 201 is positioned at the top of cavity 203；Cervical region 212 inserts in described cavity 203, and one end of cervical region 212 is provided with moving handle 202, and moving handle 202 can drive cervical region 212 to slide in cavity 203.It is respectively arranged with recess 204 with rear side on front side of the bottom land of chute 201；The bottom of recess 204 is fixed with the deep equality of spring 209, the drift of spring 209 and recess 204；Handle 213 is made up of metal material, and metal material hardness is big, it is possible to prevent spring 209 pressure from wearing recess 204.
Fig. 6 is the generalized section of the cervical region of the second embodiment of the present invention, Fig. 7 is the generalized section that the cervical region of the second embodiment of the present invention is connected with moving handle, one end of cervical region 212 is provided with through hole 210, the axis of through hole 210 is vertical with the axis of described cervical region 212, and through hole 210 runs through cervical region 212.Through hole 210 includes in the middle part of the through hole top 214 of circle, circular through hole 215, circular through hole bottom 216, in the middle part of through hole, the diameter of 215 is more than the diameter on through hole top 214, in the middle part of through hole, the diameter of 215 is more than the diameter of through hole bottom 216, namely the diameter in the middle part of through hole 210 is more than the diameter at two ends, through hole 210 is middle font, and through hole 210 is stepped along the cross section of its axis direction.Being provided with moving handle 202 in through hole 210, moving handle 202 is cylinder, is uprightly arranged in through hole 210.The upper face of moving handle 202 is provided with the first projection 206, and first protruding 206 is annular, and the protruding surface of the first projection 206 is arc, and the first projection 206 is coaxial with moving handle 202；The lower surface of moving handle 202 is provided with the second projection 207, and second protruding 207 is annular, and the protruding surface of the second projection 207 is arc, and the second projection 207 is coaxial with moving handle 202.After moving handle 202 is installed in through hole 210, when applying pressure to moving handle 202, the first projection 206 is outside through hole 210；Second projection 207 is positioned in the middle part 215 of through hole 210, and the second projection 207 is prevented from moving handle 202 landing from through hole 210.Moving handle 202 can drive cervical region 212 to slide in chute 201, thus cervical region 212 can be collapsible into cavity 203 or protruding from cavity 203, to regulate the length of oral cavity enlarging file 200.
Wherein, moving handle 202 is made up of elastomeric material, a length of 10mm (millimeter) of moving handle 202--20mm (millimeter).
Wherein, the number of total coils n of spring 209 is that 5 circles 10 enclose, and wire diameter d is 1.1mm (millimeter) 2.2mm (millimeter), curls up ratio C value 5 10, pitch t value 1.7mm (millimeter) 3.4mm (millimeter).
Introducing the use process of oral cavity enlarging file 200 below in conjunction with Fig. 8, Fig. 9 and Figure 10: before oral cavity put into by oral cavity enlarging file 200, promote moving handle 202 backward, cervical region 212 is collapsible into cavity 203, and the length of oral cavity enlarging file 200 shortens.When above the recess 204 on rear side of moving handle 202 moves to the bottom land of chute 201, moving handle 202 is pressed downwards with finger, the first protruding 206 of moving handle 202 upper end enters in the middle part of the through hole of through holes 210 in 215, in second protruding 207 recess 204 entering handle 213, now, moving handle 202 is pressed downward against spring 209, spring 209 deforms because of pressurized, the reset force of spring 209 is 0.5N (newton)--1.5N (newton), this reset force is not enough to release recess 204 by the second of moving handle 202 protruding 207, so that moving handle 202 is fixed in recess 204, cervical region 212 can not slide in chute 201, the length of oral cavity enlarging file 200 is fixed.Then oral cavity enlarging file 200 is put into oral cavity.When oral cavity enlarging file 200 is put into oral cavity and is positioned at above the tooth of root canal to be carried out, continue to press moving handle 202 downwards, make handle 202 compression spring 209 to greatest extent, so spring 209 continues forced compression and deforms upon, owing to deformation increases, so restoring force increases, now the reset force of spring 209 is 3N (newton)--5N (newton), at this moment hands decontrols moving handle 202, owing to bigger reset force is pushed up moving handle 202, moving handle 202 pops up, first protruding 206 is finally made to eject through hole 210, second protruding 207 ejects recess 204, it is bound in the middle part of the through hole of through hole 210 in 215.With the deep equality of recess 204 when spring 209 resets to drift, now, moving handle 202 and cervical region 212 recover original position, i.e. first projection 206 is outside through hole 210, second projection 207 is in the middle part of the through hole of through hole 210 in 215, moving handle 202 can slide again in chute 201, the most just can regulate the length of oral cavity enlarging file 200.Promote forward moving handle 202, cervical region 212 is protruding from cavity 203, oral cavity enlarging files 200 length, time above recess 204 on front side of at the bottom of moving handle 202 arrival slot, same moving handle 202 makes cervical region 212 fix, working end 211 is inserted tooth root pipe, uses oral cavity enlarging file 200 to file up and down in tooth root pipe dynamic, remove the inflamed human dental pulp in root pipe and downright bad material.After root pipe second-cut file has moved, continue pressing moving handle 202, make moving handle 202 can slide in chute 201 again, with the contraction in length by oral cavity enlarging file 200, take out from oral cavity.
By being fixed in recess 204 by moving handle 202, with the position of fixing cervical region 212, when such working end 211 is filed dynamic in tooth root pipe up and down, cervical region 212 will not be collapsible into cavity 203 because of stress.The bottom land of chute 201 is preferably provided with at least three recess 204.When above moving handle 202 moves into a recess 204, pressing downwards moving handle 202, moving handle 202 is fixed in recess 204.Because moving handle 202 is connected with cervical region 212, so cervical region 212 is fixed in cavity 203.By a recess 204, cervical region 212 can be fixed on a position, the bottom land of chute 201 is provided with at least three recess 204, thus obtains the oral cavity enlarging file 200 of at least three different length.
Moving handle 202 is cylinder, and recess 204 can be cylinder or cuboid.
Preferably, the Surface Machining of handle 213 has roller stricture of vagina, roller stricture of vagina to be uniformly distributed at the outer surface of handle 213, with increase frictional force be easy to doctor grip.
Embodiment three:
Figure 11 is the schematic top plan view of the third embodiment of the present invention, Figure 12 be Figure 11 along B-B direction generalized section below in conjunction with the accompanying drawings 11 and accompanying drawing 12 introduce embodiment three.
Oral cavity enlarging file 30 includes working end 31, cervical region 32 and handle 33；Working end 31 sets threaded cylinder or cone for surface；Cervical region 32 is cylinder；Handle 33 is cylinder, and handle 33 is provided with groove 34, internal holes 35, is provided with gear 38 in handle 33.
Groove 34 is positioned at the outer surface of handle 33, is provided with bonding jumper 36 in groove 34, and bonding jumper 36 is cylinder, stirs bonding jumper 36, and bonding jumper 36 can slide in groove 34, and bonding jumper 36 is made up of magnetic material；The top of groove 34 is provided with two crossbeams 39, and crossbeam 39 is prevented from bonding jumper 36 and skids off from groove 34.The bottom of groove 34 is provided with card 37, and card 37 is cuboid structure.
Internal holes 35 is positioned at the lower section of groove 34, and the axis of internal holes 35 is parallel with the axis of handle 33, and cervical region 32 inserts in internal holes 35, and can move forward and backward in internal holes 35.
Being provided with gear 38 in handle 33, the axis of gear 38 is vertical with the axis of handle 33；The bottom of gear 38 is positioned in the internal holes 35 of handle 33, and middle part is positioned in groove 34, and top is exposed from the surface of handle 33, and during so that holding handle 33, finger can be with handsetting gear 38；Cervical region 32 is the rack shapes mated with gear 38, and cervical region 32 inserts in internal holes 35 and is connected with gear 38 engagement；Gear 38 is made up of ferromagnetic material, and gear 38 can attract bonding jumper 36, bonding jumper 36 to move to gear 38, is finally stuck in the teeth groove of gear 38.When oral cavity enlarging file 30 is in unused state, the card 37 bottom groove 34 between bonding jumper 36 and gear 38, separates bonding jumper 36 and gear 38, prevents bonding jumper 36 to be attracted in teeth groove by gear 38.
Using method: before oral cavity enlarging file 30 is put into oral cavity, handsetting gear 38 forward, cervical region 32 is collapsible into internal holes 35, and oral cavity enlarging is filed 30 length and shortened, and after reaching suitable length, oral cavity enlarging file 30 is put into oral cavity.When oral cavity enlarging file 30 is positioned at above the tooth of root canal to be carried out, moving tooth wheel 38 backward, cervical region 32 is protruding from internal holes 35, oral cavity enlarging files 30 length, tooth root pipe is inserted in working end 31, after oral cavity enlarging file 30 reaches suitable length, stir bonding jumper 36, bonding jumper 36 is made to cross card 37, after crossing card 37, bonding jumper 36 is attracted by the magnetic force of gear 38, attracted in the teeth groove of gear 38, so gear 38 just can not continue to rotate, and the most just secures the position of cervical region 32.Use oral cavity enlarging file 30 to file up and down in tooth root pipe dynamic, remove the inflamed human dental pulp in root pipe and downright bad material.Oral cavity enlarging file 30 is after tooth root pipe second-cut file has moved, firmly stir bonding jumper 36, bonding jumper 36 is made to separate with gear 38, and cross card 37, now gear 38 can continue to rotate, handsetting gear 38, and cervical region 32 is collapsible in internal holes 35, oral cavity enlarging is filed 30 length and is shortened, and is taken out by oral cavity enlarging file 30 from oral cavity.
Preferably, bonding jumper 36 Surface Machining has roller stricture of vagina, roller stricture of vagina to be uniformly distributed at the outer surface of bonding jumper 36.
Preferably, the Surface Machining of handle 33 has roller stricture of vagina, roller stricture of vagina to be uniformly distributed at the outer surface of handle 33, with increase frictional force be easy to doctor grip.
Expand in treatment additionally, oral cavity enlarging disclosed by the invention file applies also for root pipe machine, will be installed on Mobile phone clip holding equipment by oral cavity enlarging file.
Claims (2)
1. an oral cavity enlarging file, it is characterised in that include working end, cervical region and handle；Described working end
It is connected with described cervical region；Described cervical region is flexibly connected with described handle, and described cervical region is with described handle activity even
The mode connect is: described handle is provided with cavity and chute；Described chute is arranged on the outer surface of this handle；
Described cavity is positioned at below described chute, and through with described chute；
Described cervical region inserts in described cavity；One end of described cervical region is provided with through hole, in the middle part of described through hole
Diameter is more than the diameter at two ends；
Being provided with moving handle in described through hole, it is protruding that the outer surface of described moving handle is respectively arranged with first
Protruding with second；Described first projection and the second projection are annular；Described first projection is positioned at described through hole
Outside, described second projection is positioned at inside described through hole；Described moving handle can drive cervical region in chute
Slide；
The bottom land of described chute is provided with at least one recess；Spring, described spring are installed in described recess
It is fixed on the bottom of described recess, and the deep equality of drift and described recess.
Oral cavity enlarging the most according to claim 1 is filed, it is characterised in that the bottom land of described chute is arranged
There is at least three recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271246.2A CN104000661B (en) | 2014-06-18 | 2014-06-18 | Oral cavity enlarging is filed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271246.2A CN104000661B (en) | 2014-06-18 | 2014-06-18 | Oral cavity enlarging is filed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104000661A CN104000661A (en) | 2014-08-27 |
| CN104000661B true CN104000661B (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410271246.2A Expired - Fee Related CN104000661B (en) | 2014-06-18 | 2014-06-18 | Oral cavity enlarging is filed |
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| Country | Link |
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| CN (1) | CN104000661B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712685A (en) * | 2021-09-27 | 2021-11-30 | 四川大学 | Can change diameter K file |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202005020213U1 (en) * | 2005-12-24 | 2006-03-02 | Guse, Carsten, Dr.med.dent. | Instrument set made from rust-proof sterilisable steel alloy or titanium for removing residue of a tooth root comprises a threaded drill and threaded sleeve screwed together and secured using a pivoting lock |
| CN103596519A (en) * | 2011-05-13 | 2014-02-19 | 普罗佩尔畸齿矫正有限公司 | Method and device for causing tooth movement |
| CN203564347U (en) * | 2013-05-22 | 2014-04-30 | 郑雅雪 | Adjustable root canal file |
| CN203898467U (en) * | 2014-06-18 | 2014-10-29 | 上海市东方医院 | Oral cavity expanding file |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9929007D0 (en) * | 1999-12-09 | 2000-02-02 | Univ Dundee | Dental instrument |
| US20110300506A1 (en) * | 2010-06-08 | 2011-12-08 | Inven Llc | Endodontic File With Working Length Adjustment Scale |
-
2014
- 2014-06-18 CN CN201410271246.2A patent/CN104000661B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202005020213U1 (en) * | 2005-12-24 | 2006-03-02 | Guse, Carsten, Dr.med.dent. | Instrument set made from rust-proof sterilisable steel alloy or titanium for removing residue of a tooth root comprises a threaded drill and threaded sleeve screwed together and secured using a pivoting lock |
| CN103596519A (en) * | 2011-05-13 | 2014-02-19 | 普罗佩尔畸齿矫正有限公司 | Method and device for causing tooth movement |
| CN203564347U (en) * | 2013-05-22 | 2014-04-30 | 郑雅雪 | Adjustable root canal file |
| CN203898467U (en) * | 2014-06-18 | 2014-10-29 | 上海市东方医院 | Oral cavity expanding file |
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| Publication number | Publication date |
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| CN104000661A (en) | 2014-08-27 |
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