CN203988300U - Condyle of mandible reset dilator - Google Patents
Condyle of mandible reset dilator Download PDFInfo
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- CN203988300U CN203988300U CN201420409658.3U CN201420409658U CN203988300U CN 203988300 U CN203988300 U CN 203988300U CN 201420409658 U CN201420409658 U CN 201420409658U CN 203988300 U CN203988300 U CN 203988300U
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- supporting portion
- hinge
- bar
- nut
- axis
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Abstract
This utility model relates to the medical apparatus and instruments that a kind of dental operation is used, and is a kind of condyle of mandible reset dilator specifically.The upper supporting portion that comprises corresponding with human body sigmoid notch lower supporting portion, coincide with zygomatic arch corresponding to human body sigmoid notch, the two ends of lower supporting portion are hinged with respectively lower support front bar and lower support rear bar, and the two ends of upper supporting portion are hinged with respectively support front bar and upper support rear bar; The lower end of the upper end of lower support front bar and upper support front bar is hinged on front hinge, and the lower end of the upper end of lower support rear bar and upper support rear bar is hinged on rear hinge, and front hinge and rear hinge are installed on axis.This dilator compact conformation, easy to use, patient is painful little, and reasonable stress is not easy the situation that mechanically deform occurs or fracture in use, can adapt to Different Individual difference.
Description
Technical field
This utility model relates to the medical apparatus and instruments that a kind of dental operation is used, and is a kind of condyle of mandible reset dilator specifically.
Background technology
The ramus of mandible end of mandibular bone has two projections, and the condyle that is referred to as that is positioned at rear is dashed forward, and a neck of mandible for the head of mandible that it is expanded by upper end and head below forms.Condyle of mandible ovalize, inside and outside path length, anteroposterior diameter is short.Side is seen, and has a horizontal ridge that prominent condyle top is divided into former and later two inclined-planes.Front bevel is little, is functional surfaces, is the heavy burden district in joint; Condyle of mandible is jaw fracture Hao Fa district, can be directly to hit the direct fracture that condyle teat causes, and can be also that mandibular bone chin portion or body catch a packet and the indirect fracture that causes, easily fails to pinpoint a disease in diagnosis clinically.Condyle of mandible is the weakest position of mandibular bone, because of but the predilection site of fracture of mandible.Be the important component part of remporomandibular joint because condyle shape is prominent, there is special physiological function, when after condylar fracture, certainly will affect temporomandibular joint, affect meshing functions, and child's mandibular bone and facial growth promoter are had to obvious impact.At present, the treatment of fracture of condylar process is mainly divided into two large classes, and a kind of is to adopt the intermaxillary traction fixing non-operative treatment that resets, i.e. expectant treatment, and another kind is the lower fixing operative treatment that resets of surgical incision direct-view.For many years, which is better and which is worse some disputes for two kinds of methods, but total situation, expectant treatment is the main flow of Treatment of Condylar Fractures always.Expectant treatment is the exposure fracture site that do not operate, but adopt upper and lower jaw denture to put Arch bar splint, on the grinding one's teeth in sleep of early contact, place the valve rubber of 2 ~ 3mm, by intermaxillary traction, fix on central occlusion position, the mandibular ramus of moving is moved down, on ascending branch, the bone stump of part recovers thereupon, be fixed on normal position, allow the prominent and ascending branch of the condyle of fracture heal on this position, again complete bone and connect.Chinese patent 2012100319709 discloses a kind of " Mandibular condyle fracture reduction dilator ", there are two clamp handles that intersection hinge connects, the front end of these two clamp handles is supporting portion, its rear end is grip part, when the grip part application of force, by the leverage of hinge, supporting portion is strutted, reach and strut lower jaw and zygomatic arch, appear joint space, facilitate the object of operation technique.But this dilator volume is larger, inconvenient operation, in operation process, front end is arranged in patient's mouth, and rear end is positioned at oral external, hinders operation technique and patient more painful; Supporting portion and grip part are in the same plane, and patient's one side cheek inwall is in use close to by supporting portion, inconvenient operation; In addition, lever control strength is difficult to grasp, the easy flexural deformation of careless slightly supporting portion; Further, the angle of upper supporting portion and lower supporting portion is fixed, and can not adapt to patient's individual variation, the accuracy that impact struts.
Summary of the invention
The purpose of this utility model is to provide painful little, the reasonable stress of a kind of compact conformation, easy to use, patient, can adapts to the condyle of mandible reset dilator of Different Individual difference.
For reaching above object, the technical scheme that this utility model adopts is: the upper supporting portion that this condyle of mandible reset dilator comprises corresponding with human body sigmoid notch lower supporting portion, coincide with zygomatic arch corresponding to human body sigmoid notch, the two ends of described lower supporting portion are hinged with respectively lower support front bar and lower support rear bar, and the two ends of described upper supporting portion are hinged with respectively support front bar and upper support rear bar; The lower end of the upper end of described lower support front bar and upper support front bar is hinged on front hinge, and the lower end of the upper end of described lower support rear bar and upper support rear bar is hinged on rear hinge, and described front hinge and rear hinge are installed on axis.
The stage casing of described axis is provided with external screw thread, front hinge and rear hinge at least one of them by thread set on axis.
The outer surface of axis is provided with external screw thread and spline, described front hinge and rear hinge are all sleeved on axis by spline, on described axis, by external thread sleeve, nut is housed, the nut sleeve of tubulose is sleeved on described nut slidably, the outer surface of described nut is provided with turbine, between described nut sleeve and nut, be with gapped, in described nut sleeve, run through worm screw is installed, the polished rod section at described worm screw two ends is slidably mounted on the tube wall of nut sleeve, and the stage casing that described worm screw is positioned at nut sleeve inner chamber is coordinated with described nut and engaged by turbine and worm.
The circular arc that described upper supporting portion is epirelief, described lower supporting portion is recessed circular arc, is provided with a boss below lower supporting portion front end.
The beneficial effects of the utility model are: compact conformation, when use, be all positioned at patient's mouth, easy to use, patient is painful little, adopt screw rod or worm and gear drives structure, reasonable stress, in use, be not easy the situation that mechanically deform occurs or fracture, angle and the shape of upper and lower supporting portion can be adjusted automatically according to stressing conditions, can adapt to Different Individual difference.
Brief description of the drawings
Fig. 1 is the structural representation of an embodiment of this utility model.
Fig. 2 is the side structure schematic diagram of Fig. 1 embodiment.
Fig. 3 is the structural representation of another embodiment of this utility model.
Fig. 4 is the structural representation that in Fig. 3 embodiment, turbine and worm coordinates.
Fig. 5 is the structure for amplifying schematic diagram of nut nut sleeve.
Detailed description of the invention
As shown in Figure 1, the upper supporting portion 2 that condyle of mandible reset dilator described in the utility model comprises corresponding with human body sigmoid notch lower supporting portion 1, coincide with zygomatic arch corresponding to human body sigmoid notch.The two ends of described lower supporting portion 1 are hinged with respectively lower support front bar 3 and lower support rear bar 4, and the two ends of described upper supporting portion 2 are hinged with respectively support front bar 5 and upper support rear bar 6; The lower end of the upper end of described lower support front bar 3 and upper support front bar 5 is hinged on front hinge 7, and the lower end of the upper end of described lower support rear bar 4 and upper support rear bar 6 is hinged on rear hinge 8, and described front hinge 7 and rear hinge 8 are installed on axis 9.As shown in Figure 2, on front hinge 7 and rear hinge 8, be provided with radially through hole, axis 9 is inserted into radially in through hole, the end of each support bar is sleeved on front hinge 7 or rear hinge 8 by bearing-ring device, each support bar can rotate around front hinge 7 or rear hinge 8, and front hinge 7 or rear hinge 8 can move axially on axis 9.In current hinge 7 or rear hinge 8 are mobile on axis 9, change distance between front hinge 7 and rear hinge 8 and can change the distance between upper supporting portion 2 and lower supporting portion 1, change the height that mandibular bone struts.
Embodiment as shown in Figure 1, Figure 2, the stage casing of described axis 9 is provided with external screw thread, front hinge 7 and rear hinge 8 at least one of them by thread set on axis 9, another is sleeved on the polished rod section on axis 9, and both sides, with snap ring, make the hinge that is arranged on polished rod section can only rotate and can not move axially.For ease of operation, can be at one end of axis 9 setting operation handle 14, described lever 14 is the handwheel shapes of dwindling with spoke, when operation, clamps lever 14 rotation central axis 9 by operating forceps, one of them moves axially to make front hinge 7 and rear hinge 8, changes distance between the two.Certainly, also can directly stir lever 14 with hands.
As Fig. 3, Fig. 4 embodiment, the outer surface of described axis 9 is provided with external screw thread and spline, described front hinge 7 and rear hinge 8 are all sleeved on axis 9 by spline, in the through hole of front hinge 7 and rear hinge 8 with protrude spline, described spline is installed in spline, front hinge 7 and rear hinge 8 can only be moved axially on axis 9, can not rotate.On described axis 9, by external thread sleeve, nut 10 is housed, makes nut 10 on axis 9, rotate and to advance.The nut sleeve 11 of tubulose is sleeved on described nut 10 slidably, the outer surface of described nut 10 is provided with turbine, between described nut sleeve 11 and nut 10, be with gapped, in described nut sleeve 11, run through worm screw 12 is installed, the polished rod section at described worm screw 12 two ends is slidably mounted on the tube wall of nut sleeve 11, and the stage casing that described worm screw 12 is positioned at nut sleeve 11 inner chambers is coordinated with described nut 10 and engaged by turbine and worm.When rotary worm 12, can promote nut 10 and rotate, thereby it is moved on axis 9.For nut sleeve 11 is sleeved on described nut 10 slidably, as shown in Figure 5, in the both ends of the surface of nut 10, be provided with the circular draw-in groove concentric with axis 9, both ends of the surface in nut sleeve 11 are provided with end cap, on described end cap, correspondence position is provided with the snap ring 15 of matching circular draw-in groove, and snap ring 15 is installed in circular draw-in groove.Like this, both nut sleeve 11 can be fixed on nut 10, and can make again both relatively rotate.Can promote nut 10 by handle rotary worm 12 and move, change the distance between front hinge 7 and rear hinge 8, thereby adjust the height between lower supporting portion 1 and upper supporting portion 2.When use, the inwall of patient's cheek is close to by lower supporting portion 1 and upper supporting portion 2, is positioned at middle part, patient oral cavity, convenient operation with the operating side of the vertically disposed worm screw 12 of axis 9.
The circular arc that above-mentioned upper supporting portion 2 is epirelief, has good elasticity, and two ends are stressed can produce distortion laminating tissue large time, and adapts to Different Individual difference.Described lower supporting portion 1 is recessed circular arc, is provided with a boss 13 below lower supporting portion 1 front end, and can the fit groove position of sigmoid notch of this boss 13 contributes to firm position, accurately.
Claims (4)
1. condyle of mandible reset dilator, the upper supporting portion (2) that comprises the lower supporting portion (1) corresponding with human body sigmoid notch, coincide with zygomatic arch corresponding to human body sigmoid notch, it is characterized in that: the two ends of described lower supporting portion (1) are hinged with respectively lower support front bar (3) and lower support rear bar (4), the two ends of described upper supporting portion (2) are hinged with respectively support front bar (5) and upper support rear bar (6); The lower end of the upper end of described lower support front bar (3) and upper support front bar (5) is hinged on front hinge (7), it is upper that the lower end of the upper end of described lower support rear bar (4) and upper support rear bar (6) is hinged on rear hinge (8), and described front hinge (7) and rear hinge (8) are installed on axis (9).
2. condyle of mandible reset dilator according to claim 1, is characterized in that: the stage casing of described axis (9) is provided with external screw thread, front hinge (7) and rear hinge (8) at least one of them by thread set on axis (9).
3. condyle of mandible reset dilator according to claim 1, it is characterized in that: the outer surface of axis (9) is provided with external screw thread and spline, described front hinge (7) and rear hinge (8) are all sleeved on axis (9) by spline, described axis (9) is upper is equipped with nut (10) by external thread sleeve, the nut sleeve (11) of tubulose is sleeved on described nut (10) slidably, the outer surface of described nut (10) is provided with turbine, between described nut sleeve (11) and nut (10), be with gapped, in described nut sleeve (11), run through worm screw (12) is installed, the polished rod section at described worm screw (12) two ends is slidably mounted on the tube wall of nut sleeve (11), the stage casing that described worm screw (12) is positioned at nut sleeve (11) inner chamber is coordinated with described nut (10) and is engaged by turbine and worm.
4. according to the condyle of mandible reset dilator described in claim 1 or 2 or 3, it is characterized in that: the circular arc that described upper supporting portion (2) is epirelief, described lower supporting portion (1) is recessed circular arc, is provided with a boss (13) below lower supporting portion (1) front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420409658.3U CN203988300U (en) | 2014-07-24 | 2014-07-24 | Condyle of mandible reset dilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420409658.3U CN203988300U (en) | 2014-07-24 | 2014-07-24 | Condyle of mandible reset dilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203988300U true CN203988300U (en) | 2014-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420409658.3U Expired - Fee Related CN203988300U (en) | 2014-07-24 | 2014-07-24 | Condyle of mandible reset dilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203988300U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104083197A (en) * | 2014-07-24 | 2014-10-08 | 郝宏 | Mandibular condyle reposition expander |
| CN110393581A (en) * | 2019-07-09 | 2019-11-01 | 缙云县平民大药房药品零售有限公司 | A kind of fracture of mandible exterior fixing rack and its fixing means |
-
2014
- 2014-07-24 CN CN201420409658.3U patent/CN203988300U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104083197A (en) * | 2014-07-24 | 2014-10-08 | 郝宏 | Mandibular condyle reposition expander |
| CN105250015A (en) * | 2014-07-24 | 2016-01-20 | 郝宏 | Surgical instrument for mandibular condyle |
| CN104083197B (en) * | 2014-07-24 | 2016-02-10 | 郝宏 | Condyle of mandible reset dilator |
| CN105249920B (en) * | 2014-07-24 | 2016-08-24 | 南京畅丰生物科技有限公司 | A kind of Maxillofacial surgery dilator |
| CN110393581A (en) * | 2019-07-09 | 2019-11-01 | 缙云县平民大药房药品零售有限公司 | A kind of fracture of mandible exterior fixing rack and its fixing means |
| CN110393581B (en) * | 2019-07-09 | 2020-11-20 | 义乌市优创知识产权运营有限公司 | External fixing bracket for mandibular fracture and fixing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150724 |
|
| EXPY | Termination of patent right or utility model |