CN101426449A - Automatic maxillary bone arch expander and transfer device - Google Patents

Abstract

The automatic maxillary expander (7) is a bone-supported distractor for expanding maxillary bones of adults and adolescents with transverse maxillary hypoplasia. It is self-anchoring to the palatal fornix without any need for tightening by means of asymmetric triangular prism shaped notched spikes (3) on the notched anterior and posterior columns (1, 2). It provides high patient comfort as it is both sanitary and does not waste volume space within the mouth. The maxillary expansion process does not interrupt orthodontic treatment of the patient and also minimizes damage to oral tissues. The automatic maxillary expander transfer device (22) enables a practitioner to easily and accurately place the automatic maxillary expander (7) into the palatal surface. The device (22) enables the practitioner to place the automatic maxillary expander (7) into the palate under local anesthesia in a short time without any surgical intervention. In addition, the device (22) consists of a very simple mechanism. It has rounded ends so as not to harm the practitioner and patient.

Description

Automatically upper jaw bone expands bow device and transfer device

The horizontal hypoplasia of teenager and adult's upper jaw bone is regarded as comprising cleft palate patient's the day after tomorrow or inborn freak usually.Can expand bow (SARME) by means of the auxiliary rapid maxillary bone of operation to the ripe patient of skeleton development and proofread and correct monolateral or bilateral upper jaw bone hypoplasia.Expand in the bow appliance at the traditional rapid maxillary bone that is known as the Hyrax appliance, the patient is carried out dental impressions and the Hyrax appliance is welded on the fringing of molar or with acrylic acid shell medicated cap being bonded on all teeth.These tooth brace type appliances can cause cementopathia, buccal root absorption, cortex perforation, arc inclination and anchorage tooth (anchorage-tooth) to tilt.Therefore, it may cause anchorage (anchorage) failure.Tooth brace type appliance can cause that the patient of intellectual retardation patient and poor oral hygiene produces dental caries.Therefore, in the upper jaw bone process of expansion, tooth brace type appliance may produce the result who does not expect aspect patient and the odontologist.

On the contrary, tooth brace type traction apparatus is applied to the more high position in the palatal vault.Mainly can obtain the skeleton expansion with this type of traction apparatus.In addition, because power directly concentrates on the skeleton, so tooth can run-off the straight.Yet may there be some influence of not expecting in this traction apparatus.Commercial at present tooth brace type traction apparatus (for example horizontal palate traction apparatus (Transpalatal Distractor) and Magdenburg palate traction apparatus) must can be used for the acquired deformity patient with fixing also being proved of screw.MDO-R and Rotterdam traction apparatus do not need screw.Yet these traction apparatus volumes are big and cause patient's discomfort.And in the Rotterdam traction apparatus, because the design reasons of traction apparatus, each expansion amount that activates all can reduce.Therefore, the patient may can not get suitable daily expansion amount.People such as J.Koudstaal have mentioned this problem in their preliminary study about this traction apparatus.

Automatically to expand bow device (7) be the Transform Type design of Hyrax appliance to upper jaw bone, and this automatic upper jaw bone expands the titanium that bow device (7) comprises titanium post (1,2) and asymmetric triangular prism shaped band recess and follows closely (3).Nail (3) is most important parts, the stability that it is directly transferred to the effect of described expansion bow device when each rotation of the coaxial screw (5) of band gear skeleton and described traction apparatus is provided in skeleton.Carry out at upper jaw bone under the state of local anesthesia it suitably being applied to palatal surface to needs expansions.Utilize the particular design of its band recess, nail (3) pierces through mucosa by the each rotation that utilizes the coaxial screw (5) of being with gear and penetrates in the skeleton.The post (1,2) that attaches to the tray (4) of the expansion with optimized angle passes through nail (3) to upper jaw bone effect expansionary force.The daily expansionary force that each rotation of the coaxial screw (5) of band gear will be estimated is passed to upper jaw bone.Between expansionary phase, the changeable angle of joint between post (1,2) and the nail (3) more preferably penetrates in the skeleton nail (3) in each upper jaw bone motion, thereby has increased the stability of described traction apparatus.Because described traction apparatus be can't help tooth and is supported, and can not cause that tooth tilts.Because it is less size significantly, patient's comfortableness is improved.Automatically upper jaw bone expansion bow device (7) is a kind of traction apparatus, and it can be used in particular for adult or teen-age upper jaw bone that upper jaw bone shrinks are expanded.The nose air channel that the patient's that upper jaw bone shrinks nasal meatus is expanded and expanded by described process of expansion helps the patient to use the nose eupnea.When it provides upper jaw bone when expansion at center line, it has expanded the backlash between the middle front tooth, formed be used for tooth suitably the space of contact to improve the crowded dentition phenomenon.It provides short orthodontic treatment cycle and patient's orthodontic treatment need not interrupt between expansionary phase.It also helps to shorten as far as possible the processing time and thinks that this is a major advantage.

Automatic upper jaw bone expansion bow device (7) comprises two trays (4), is with the coaxial screw (5) of gear, attaches to the stable axis (6) of coaxial screw (5) both sides of being with gear and attaches to the front pillar of the band recess that is fixed to tray (4) and the nail (3) of rear pillar (1,2).Post (1,2) and nail (3) have anti-rotation recess.The coaxial screw (5) of band gear comprises two holes of 90 degree intersected with each other at the middle part.In addition, the coaxial screw (5) of band gear comprises the gear with specific number of teeth.With the coaxial screw (5) that activates in the opening that spoon inserts these holes with the rotating band gear.When automatic upper jaw bone expands bow device (7) by means of the gear on the coaxial screw (5) of band gear and special-purpose transfer device (22) when engaging, the practitioner can easily place it on patient's the palate.

The automatic upper jaw bone expansion bow device (7) that the practitioner will attach to special-purpose transfer device (22) is inserted in the palate of local anesthesia, triggers ripping bar (9) then.When ripping bar (9) pressurized, the close lever (21) of part that bearing (8) is following.Simultaneously, lever (21) is left on the top of ripping bar bent plate (19) time-out effect and ripping bar (9).This motion of ripping bar (9) will attach to the strip piece (creamier gear) (14) of the band serration on described ripping bar top and extract out from support (13).Thereby the gear (15) in the support (13) moves clockwise by the motion of the strip piece (14) of band serration.Therefore, automatically upper jaw bone expand bow device (7) intermediary, begin to be rotated counterclockwise at the coaxial screw (5) of support (13) end upper fixed at the band gear between maintenance bent plate (16) and the baffle plate (20).So upper jaw bone expands the horizontal expansion of bow device (7) automatically.The rear pillar (2) of band recess is longer than the front pillar (1) of band recess, is used to provide with the better of palatal vault cooperate.Post (1 at the band recess of both sides, the nail (3) of the asymmetric triangular prism shaped band recess 2) penetrates in the palatine bone by each rotation of the coaxial screw (5) of band gear, and tray (4) upper jaw bone expansion bow device separated from one another and automatic (7) attaches to palate by means of nail (3) then.The automatic upper jaw bone expansion bow device (7) that is arranged on the palatal surface is inserted between baffle plate (20) and the flexible maintenance bent plate (16).After this stage, by means of soft power automatic upper jaw bone is expanded bow device (7) and remove from transfer device (22), upper jaw bone expansion bow device (7) is stable automatically remains on the palatal surface.Thereby upper jaw bone expansion bow device (7) is finished its task with transfer device (22) automatically.

The view of invention assembly

Fig. 1: automatically upper jaw bone expands bow device (7) from the top and the view of side perspective;

Figure 1A: the automatic upper jaw bone of breaking expands bow device (7) from the top and the view of side perspective;

Figure 1B: the nail (3) of the front pillar of the tray that installs (4), band recess, the rear pillar (1,2) of band recess and asymmetric triangular prism shaped band recess is from the top and the view of side perspective;

Fig. 1 C: automatically upper jaw bone expands bow device (7) from the bottom and the view of side perspective;

Fig. 2: the automatic upper jaw bone that installs expands the view of bow device (7) and transfer device (22) and the automatic upper jaw bone expansion bow device (7) that installs and the detailed view of transfer device (22);

Fig. 3 A: upper jaw bone expands the cutaway view of bow device transfer device (22) automatically;

Fig. 3 B: upper jaw bone expands the view that bow device transfer device (22) is had an X-rayed from behind automatically;

Fig. 3 C: upper jaw bone expands the view of bow device transfer device (22) from top perspective automatically;

Fig. 4: the automatic upper jaw bone that installs expands the cutaway view of bow device (7) and transfer device (22);

Fig. 4 A: the automatic upper jaw bone that installs expands the detailed section view of bow device (7) and transfer device (22);

Fig. 5 A: lever (21) is from the top and the view of side perspective;

Fig. 5 B: bearing (8) is from the top and the view of side perspective;

Fig. 5 C: ripping bar bent plate (19) is from the top and the view of side perspective;

Fig. 5 D: ripping bar (9) is from the top and the view of side perspective;

Fig. 5 E: the strip piece (14) of band serration is from the top and the cutaway view of side perspective;

Fig. 5 F: support (13) is from the top and the cutaway view of side perspective;

Fig. 6 A: maintenance bent plate (16) is from the top and the oblique view of side perspective;

Fig. 6 B: gear (15) is from the top and the oblique view of side perspective;

Fig. 6 C: ripping bar pin (10) is from the top and the oblique view of side perspective;

Fig. 6 D: support gear pin (11) is from the top and the oblique view of side perspective;

Fig. 6 E: bent plate pin (17) is from the top and the oblique view of side perspective;

Fig. 6 F: the oblique view of perspective from the side of baffle plate (20);

Fig. 6 G: the oblique view that support bracket bolt (18) is had an X-rayed from the side;

Fig. 6 H: the oblique view that maintenance bent plate bolt (12) is had an X-rayed from the side.

Automatically upper jaw bone expands the assembly of bow device (7) and transfer device (22):

1) front pillar of band recess

2) rear pillar of band recess

3) nail of asymmetric triangular prism shaped band recess

4) tray

5) the coaxial screw of band gear

6) stable axis

7) upper jaw bone expands the bow device automatically

8) bearing

9) ripping bar

10) ripping bar pin

11) support gear pin

12) maintenance bent plate bolt

13) support

14) strip piece of band serration

15) gear

16) maintenance bent plate

17) bent plate pin

18) support bracket bolt

19) ripping bar bent plate

20) baffle plate

21) lever

22) upper jaw bone expands bow device transfer device automatically

Automatic upper jaw bone expands bow device transfer device (22) can make the practitioner easily and accurately automatic upper jaw bone expansion bow device (7) is placed in the palatal surface.Existing upper jaw bone expands the bow device and does not possess this type of transfer device (22).This device (22) can make the practitioner in a short period of time automatic upper jaw bone be expanded bow device (7) under not carrying out any operating situation and be placed in the palate of local anesthesia.Thereby this automatic upper jaw bone expands the upper jaw bone expansion bow device that bow device (7) is different from present use fully, compares with them to have significant advantage.In addition, this device (22) is made up of very simple mechanism.Automatic upper jaw bone expands bow device transfer device (22) and has been designed to help the practitioner easily and accurately automatic upper jaw bone expansion bow device (7) to be placed in the palatal surface.

Automatically upper jaw bone expands the ripping bar (9) that bow device transfer device (22) has the lever (21) that is formed by the elliptic cross-section cylinder, the bearing (8) that attaches to described lever (21), attaches to bearing (8) by ripping bar pin (10).Ripping bar bent plate (19) is installed between ripping bar (9) and the lever (21) by two bent plate pins (17) with being relative to each other.Support (13) is fixed on the lever (21) by two support bracket bolts (18), and this support (13) has strip piece (14), maintenance bent plate (16), the gear (15) of band serration and the baffle plate (20) that attaches to support (13) by welding.Maintenance bent plate (16) attaches to support (13) by maintenance bent plate bolt (12), and gear (15) attaches to support (13) by means of support gear pin (11).The strip piece (14) of ripping bar (9) and band serration is connected to each other by ripping bar pin (10).

Claims (11)

1. an automatic upper jaw bone expands bow device (7), comprise two trays (1), the band gear coaxial screw (5), attach to described band gear coaxial screw (5) both sides two stable axis (6) and be asymmetric triangular prism shaped four nails (3), described nail (3) attaches to the front pillar of the band recess that is fixed to described tray (4) and the rear pillar (1,2) of band recess.

2. expansion as claimed in claim 1 bow device (7), wherein, the nail (3) of described asymmetric triangular prism shaped band recess attaches to the post (1,2) of band recess and penetrates in the palatine bone to provide stable with their surfaces towards the broad of tongue.

3. expansion bow device (7) as claimed in claim 1, wherein, the rear pillar of described band recess (2) is longer than the front pillar (1) of band recess, is used to provide with the better of palatal vault cooperate.

4. expansion bow device (7) as claimed in claim 1, wherein, the changeable angle of the joint between the front pillar of described nail (3) and band recess and the rear pillar (1,2) of band recess provides with the better of palate in the expansion of the upper jaw that shrinks and cooperates.

5. expansion bow device (7) as claimed in claim 1, wherein, described post (1,2) and tray (4) can make up with changeable angle.

6. expansion bow device (7) as claimed in claim 1, the adjustment screw (5) of wherein said band gear comprises the gear with specific number of teeth in the centre, described gear comprises with 90 degree, two holes intersected with each other.

7. expansion as claimed in claim 1 bow device (7), the rear pillar (1,2) of the front pillar of wherein said band recess and band recess also have the nail (3) of asymmetric triangular prism shaped band recess except that anti-rotation recess.

8. an automatic upper jaw bone expands bow device transfer device (22), comprises lever (21), bearing (8), ripping bar (9), ripping bar bent plate (19), the support (13) that is formed by the elliptic cross-section cylinder, strip piece (14), gear (15), maintenance bent plate (16), two bent plate pins (17), two ripping bar pins (10), support gear pin (11), maintenance bent plate bolt (12), two support bracket bolts (18), the baffle plate (20) of being with serration.

9. transfer device as claimed in claim 8 (22), wherein, described transfer device has and helps to be fixed to described automatic upper jaw bone and expand the baffle plate of bow device and have flexible maintenance bent plate, and described baffle plate and described maintenance bent plate all help fixing described automatic upper jaw bone to expand the bow device to expand the bow device until described upper jaw bone and be fixed in the palate.

10. transfer device as claimed in claim 8 (22), wherein, the strip piece (14) that each pressurized motion of described ripping bar (9) will attach to the band serration on described ripping bar top is extracted out from described support (13), gear (15) in the described support (13) thereby move clockwise by the motion of strip piece (14) of band serration, so described automatic upper jaw bone expands the horizontal expansion of bow device (7).

11. transfer device as claimed in claim 8 (22), wherein, described transfer device (22) helps the practitioner easily and suitably described automatic upper jaw bone expansion bow device (7) to be placed in the described palate.

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