CN209645103U - Correction bone anchorage type flat duct - Google Patents
Correction bone anchorage type flat duct Download PDFInfo
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- CN209645103U CN209645103U CN201920143650.XU CN201920143650U CN209645103U CN 209645103 U CN209645103 U CN 209645103U CN 201920143650 U CN201920143650 U CN 201920143650U CN 209645103 U CN209645103 U CN 209645103U
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- flat duct
- interconnecting piece
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0093—Features of implants not otherwise provided for
- A61C8/0096—Implants for use in orthodontic treatment
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- Oral & Maxillofacial Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model provides a kind of correction bone anchorage type flat duct.Interconnecting piece, flat duct ontology and fixed part including being integrally formed setting, flat duct ontology is flat and its lip buccal side is set as globoidal structure, and structure is simplified, small to mucosal irritation, and comfort level is high.It is horizontally disposed on flat duct ontology to there is the flat of rectangular in cross-section to wear arch wire hole, good structure matching relationship is formed with flat duct, reduces integral thickness required for flat duct ontology, to mitigate the stimulation to mucous membrane.In the utility model, the traction groove that can be used for hanging correction elastic tape or spring is provided at the position that flat duct ontology is connect with interconnecting piece, the traction groove is made of flat duct ontology missing sub-fraction, entire flat duct does not need in addition to add draw hook, further reduces the stimulation to mucous membrane.
Description
Technical field
The utility model relates to medical instrument, especially a kind of correction bone anchorage type for Orthodontic Treatment is flat to be led
Pipe.
Background technique
Orthodontic Treatment is the external force using physiological, is acted on tooth and alveolar bone, allows the denture of deformity, tooth position
It is changed, oral cavity masticatory function, periodontal health and the face for restoring patient are beautiful.But conventional reinforcing method is to pass through
Correction steel wire, rubber band, spring and transparent appliance are implemented, and for more serious deformity, such as have the depth of bone problem
Prominent, backteeth seriously locks the clinical problems such as knot, tooth impaction of low site before occlusion, denture, and the above measure proves definitely inferior, gets half the result with twice the effort,
So improving orthodontic treatment effect using the auxiliary augmentor of more robust bone anchorage type, have in correction work very big
Application prospect.
Currently, Implant anchorage device in clinic using it is more be self-taped type implant anchorage nail, doctor is easy to operate,
It is easy to use.Anchorage nail is usually the position beaten on gum side, apart from 4~8mm of gingival margin.But doctor is using this kind of branch
When anti-nail, the problem of encountering, mainly has following:
1, single anchorage nail retention is insufficient, and no more than 200g, slightly larger stress can cause to prop up single anchorage nail stress
Anti- nail loosens, to influence orthodontic treatment effect.
2, since anchorage nail head needs to initially pass through the gingiva tissue at gum, then alveolar bone is pierced, general anchorage nail
It at least include three parts, i.e. threaded portion in screw-in alveolar bone and exposes to dental surface at neck in gingiva tissue
The length on head, anchorage nail is generally longer, and anchorage nail head extends to lip cheek inner top and can not connect kind in order to prevent when plantation
Plant tool (such as bottle opener), anchorage nail must be planted in the position for leaning on short distance gingival margin, and cannot close to gum root, such one
The planting location that aspect will cause anchorage nail is limited；On the other hand, when anchorage nail length is longer, for rising for implant anchorage nail
The bar portion of son is also required to be arranged longer, to guarantee the stroke of anchorage nail, and prevents bottle opener main part and lip cheek from interfering and shadow
The force of the tool of sound.
3, anchorage nail head not only needs to open up the clamping groove for connecting Rotating opener, but also needs to open up for connecting traction
The groove of part (such as spring or rubber band), in order to guarantee enough intensity, anchorage nail head generally can all protrude it is higher, in this way
Meeting, it is easy to lip buccal mucosa is caused to stimulate, in addition, since the planting location of anchorage nail is commonly located closer to gingival margin position,
The friction of anchorage nail head is highly prone to when lip cheek activity, comfort level is inadequate.
Chinese patent 201620784652.3 discloses a kind of bone anchorage buccal tube, including for wearing the buccal tube for drawing silk
Cylinder and the fixed part being connect with buccal surface socket by connector, fixed part transmucosal cutting operation are embedded in gum, fixed
Portion is used to wear the mounting hole of screw equipped with 2~3, Screw retained fixes buccal tube in jawbone cortical bone, fixed
Portion is bonded with jawbone cortical bone, is increased retention and is improved comfort level, but its exposed buccal tube height is higher, corner angle point
It is bright, in addition, still there is larger stimulation to lip buccal mucosa in the draw hook of protrusion.
Therefore, there is still a need for a kind of schemes in the prior art to solve the above problems.
Utility model content
The utility model aim is to provide a kind of correction bone anchorage type flat duct, with solve to propose in background technique
Problem.
A kind of correction bone anchorage type flat duct including interconnecting piece 2 and is separately connected and is set to the flat of interconnecting piece both ends
Catheter body 1 and fixed part 3, the fixed part is for being fixed on jawbone, the interconnecting piece, flat duct ontology and fixed part
The monolithic construction being integrally formed, the structure of the flat duct ontology are flat, the thickness direction of flat duct ontology
Be directed toward that the direction of tooth is consistent, and the lip buccal side of flat duct ontology is set as globoidal structure by lip cheek, on flat duct ontology
It is provided with and wears arch wire hole 11.
The fixed part is embedded under mucous membrane and is bonded with jawbone periosteum setting, and interconnecting piece and flat duct ontology are located at viscous
Outside film, at least two are provided on the fixed part for wearing the fixed hole 4 of retaining screw.Fixed part is integrated with interconnecting piece
The plate-like structure of setting, whole plate thickness are 0.5~1.0mm, preferably 0.8mm
The fixed hole for being used to wear retaining screw being not arranged on the same straight line there are three being arranged on the fixed part.
A fixed hole, the turning of fixed part is respectively arranged in the V-shaped structure of fixed part, two ends of fixed part and corner
The angle at place is 90~120 °, and preferably 100 °, 90~120 ° of angle both ensure that the bikini retention system of fixed part, enhancing
Fastness and stress-bearing capability, and can prevent that the vertical dimension of fixed part is excessive and influence the embedded of fixed part, with V-arrangement fixed part
Flat duct is mainly used for upper jaw gum.
The interconnecting piece and V-arrangement fixed part connect and compose Y-shaped structure, and Y-shaped structure is in tabular, and whole plate thickness is 0.5~
1.0mm, preferably 0.8mm, the length of the interconnecting piece are 4~8mm, and width is 0.8~1.2mm.
In addition, the fixed part may be arranged as linear type structure, the both ends of linear type fixed part are each provided with
One fixed hole, the distance between two fixed holes are 2~4mm (distance of center circle of two fixed holes), and interconnecting piece is fixed with linear type
Portion is longitudinally connected to constitute whole straight-bar-shaped structure, and the length of interconnecting piece is 4~8mm, and flat with linear type fixed part is led
Pipe is mainly used for lower jaw gum.
The correction bone anchorage type flat duct overall material is titanium alloy, and it is curved that interconnecting piece can according to need work appropriateness
Song reduces stimulation to be bonded tooth as far as possible.
The size of the flat duct body length direction (i.e. the length direction of arch wire) be 2.2~3mm, preferably 2.5mm,
The size in flat duct body width direction (i.e. vertical direction) is 1.8~2.2mm, preferably 2mm, flat duct body thickness ruler
Very little is 1~1.5mm, preferably 1.2mm.
On the flat duct ontology to wear arch wire hole 11 horizontally disposed, and wearing arch wire hole is square hole, wears arch wire
The cross section in hole is rectangle, in the rectangular cross section for wearing arch wire hole, the thickness direction one of width direction and flat duct ontology
It causes, length direction is arranged along the vertical direction, i.e., consistent with the length direction of interconnecting piece.
The size of the width direction for wearing arch wire hole rectangular cross section is 0.022 inch, wears arch wire hole rectangular cross section
The size of length direction is 0.028 inch, and clinically the common size of bracket groove is identical with correction, since orthodontic wire is
Standard component is arranged to 0.028 inch long × wide 0.022 inch of the size in cross section, can pass through for the arch wire of all standard specifications,
This dimensional structure of rectangular cross section to wear the arch wire hole hole Ye Weibian, is formed well with the flat structure of flat duct main body
Matching relationship, reduce integral thickness required for flat duct ontology, reduce the stimulation to mucous membrane.
The traction groove 5 that can be used for hanging traction piece is provided at the position that the flat duct ontology is connect with interconnecting piece,
The traction groove is lacked to set and be constituted by flat duct ontology and/or interconnecting piece, and the opening of the traction groove is led towards fixed part
The width direction for drawing groove is same or similar with the width direction of interconnecting piece.
It is described traction groove width direction it is identical as the width direction of interconnecting piece, traction groove in the width direction to
The width direction of interconnecting piece is recessed, and the recessed width for drawing groove is about draw groove overall width 1/3.
The traction groove is to be symmetrically distributed in interconnecting piece body of rod width two to two sides.
It is set at the outer surface turning (at the intersection position of front and rear surfaces and left and right side) of the interconnecting piece and fixed part
It is set to smooth arc transition, rounded corner 6 is such as set, to reduce the stimulation to mucous membrane.
One end that the fixed hole corresponds to lip buccal side is provided with and retaining screw head edge back side outline portion or whole
Matched sunk structure 41.
The utility model at least has the advantages that
Flat duct ontology, interconnecting piece and fixed part included by the correction bone anchorage type flat duct of the utility model be
Anchorage nail and the function of buccal tube, bracket are integrated in one by the monolithic construction being wholely set, and structure is simplified, flat duct
Ontology is smooth circular arc in flat and lip buccal side surface, small to mucosal irritation, and comfort level is high.
It is horizontally disposed on flat duct ontology to wear arch wire hole in the utility model, wear the cross section in arch wire hole
For rectangle, in the rectangular cross section for wearing arch wire hole, width direction is consistent with the thickness direction of flat duct ontology, length side
To being arranged along the vertical direction, this dimensional structure of rectangular cross section to wear the arch wire hole hole Ye Weibian, the shape with flat duct
At good structure matching relationship, integral thickness required for flat duct ontology is reduced, can also reduce the stimulation to mucous membrane.
In the utility model, it is provided at the position that flat duct ontology is connect with interconnecting piece and can be used for hanging leading for traction piece
Draw groove, the traction groove is made of flat duct ontology missing sub-fraction, and entire flat duct does not need in addition to add
Draw hook, and draw hook is replaced with traction groove to hang traction piece, further reduce the stimulation to mucous membrane.
Other than objects, features and advantages described above, there are also other purposes, feature and excellent for the utility model
Point.Below with reference to figure, the utility model is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.In attached drawing
In:
Fig. 1 is the three-dimensional structure diagram when correction bone anchorage type flat duct of the preferred embodiment in the utility model one is laid flat
(lip buccal side of flat duct upward, the V-shaped structure of fixed part)；
Fig. 2 is the correction bone anchorage type flat duct main view of the preferred embodiment in the utility model one；
Fig. 3 is at the flat duct body position of correction bone anchorage type flat duct of the preferred embodiment in the utility model one
Side view；
Fig. 4 is the three-dimensional structure diagram when correction bone anchorage type flat duct of the preferred embodiment in the utility model two is laid flat
(upward, fixed part is in linear type structure to the lip buccal side of flat duct)；
Fig. 5 is the correction bone anchorage type flat duct main view of the preferred embodiment in the utility model two；
Fig. 6 is the installation effect figure of the preferred embodiment in the utility model one；
Fig. 7 is the installation effect figure of the preferred embodiment in the utility model three.
In figure: 1- flat duct ontology, 11- wear arch wire hole, 2- interconnecting piece, 3- fixed part, 4- fixed hole, 41- (recess knot
Structure) bevelling, 5- traction groove, 6- rounded corner, 7- arch wire.
Specific embodiment
The embodiments of the present invention are described in detail below in conjunction with attached drawing, but the utility model can be according to power
Benefit requires to limit and the multitude of different ways of covering is implemented.
Referring to the correction bone anchorage type flat duct embodiment one of FIG. 1 to FIG. 3, the company being vertically arranged including length direction
Socket part 2 and being separately connected is set to the flat duct ontology 1 and fixed part 3 at interconnecting piece length direction both ends, the fixed part warp
The incision suture of gum mucous membrane is postoperative to be embedded under mucous membrane and is bonded setting with jawbone periosteum, and interconnecting piece is located at flat duct ontology
Outside mucous membrane, in order to make flat duct ontology close to tooth in order to fixed arch wire, the length of interconnecting piece can be according to the height of gum
Size adjusts setting, can also make appropriately curved and fine tuning, the length of interconnecting piece in orthodontic procedure and be traditionally arranged to be 4~8mm,
The length dimension of interconnecting piece is 6mm in the present embodiment.In the present embodiment, fixed part V-shaped structure is provided with 3 on fixed part
What is be not arranged on the same straight line is used to install the fixed hole 4 of retaining screw, and two ends of fixed part and corner are respectively arranged one
A fixed hole, totally three fixed holes, the angle of the corner of fixed part are 100 °.The length of retaining screw is set as to be implanted into
Jawbone cortical bone, since retaining screw no longer needs to connect traction piece, the length of retaining screw is about 3~5mm,
Length is about the half of the length of common anchorage nail so that the position of fixed part by lip buccal side mucous membrane structure influence degree significantly
Reduce, connection and the force for rotating tool are also more convenient.
In embodiment one, the monolithic construction that interconnecting piece, flat duct ontology and fixed part are integrally formed is entire flat
Conduit can be integrally machined molding by way of casting or 3D printing, and material is the common titanium alloy of the department of stomatology, on the one hand not allow
Easily cause allergy, on the other hand, titanium alloy, which has some strength, can transmit tractive force, also can according to need in oral cavity pincers
Bending deformation occurs under active force.In the present embodiment, interconnecting piece and V-arrangement fixed part connect and compose Y-shaped structure, and Y-shaped structure is in flat
Plate, whole plate thickness are 0.8mm, and the internal diameter at fixed hole is 1.5mm, outer diameter 3mm, matched solid with fixed hole
The diameter of position screw is 1.5mm, length 4mm.
In embodiment one, the structure of the flat duct ontology be it is flat, the thickness direction of flat duct ontology with by
The direction that lip cheek is directed toward tooth is consistent, and the lip buccal side of flat duct ontology is set as globoidal structure, to reduce to the greatest extent pair
The gum side of the stimulation of lip buccal side mucous membrane, flat duct ontology is set as deformable planar structure, can become under external force
The imitated structure to match with dental surface is formed, so that flat duct ontology can be bonded tooth as far as possible and reduce protrusion part
Size reduces the stimulation to lip buccal side mucous membrane.
Horizontally disposed on flat duct ontology to wear arch wire hole 11, wearing arch wire hole is square hole, wears the cross in arch wire hole
Section is rectangle, and in the rectangular cross section for wearing arch wire hole, width direction is consistent with the thickness direction of flat duct ontology, length
Degree direction is arranged (i.e. consistent with the length direction of interconnecting piece) along the vertical direction, in the present embodiment, flat duct body length side
It is 2.5mm to the size of (i.e. the length direction of arch wire 7), the size in flat duct body width direction (i.e. vertical direction) is
1.8~2.2mm, preferably 2mm, flat duct body thickness wear the ruler in the direction arch wire hole width W referring to Fig. 3 having a size of 1.2mm
Very little is 0.022 inch, and the size for wearing the direction arch wire hole length L is 0.028 inch.
In embodiment one, being provided at the position that the flat duct ontology is connect with interconnecting piece can be used for hanging traction piece
The traction groove of (such as spring or rubber band), the traction groove are lacked to set and be constituted, joined by flat duct ontology and interconnecting piece bottom
See Fig. 2, in the present embodiment, the opening for drawing groove is led towards the fixed part being located above if fixed part is seated in mandibular
The opening for drawing groove is fixed part downward, and the width direction for drawing groove is identical as the width direction of interconnecting piece or phase
Closely.
The traction groove is two for being symmetrically distributed in interconnecting piece post width direction two sides, two traction grooves
Width dimensions be 0.3mm, in the present embodiment, traction groove is in addition to other than depth direction flat duct ontology is recessed, two
A traction groove is respectively recessed 0.1mm to the width side of interconnecting piece.Draw groove width can only setting 0.3mm wide, can also be with
More wider, the utility model replaces draw hook with traction groove to hang traction piece completely without in addition adding draw hook,
Further reduce the stimulation to mucous membrane.
In embodiment one, the outer surface turning of interconnecting piece and fixed part is (in the intersection position of front and rear surfaces and left and right side
Place) at be provided with rounded corner 6, to reduce stimulation to mucous membrane.
One end that the fixed hole corresponds to lip buccal side is provided with and retaining screw head edge back side outline portion or whole
Matched sunk structure 41, sunk structure can be such that the head of retaining screw largely or entirely limits in fixed hole, on the one hand just
In retaining screw maintenance, the length for the part that retaining screw is located at other than gum on the other hand can be shortened, and then reduce maintenance spiral shell
The entire length of nail.Referring to Fig. 1 and Fig. 2, in embodiment one, sunk structure 41 is and retaining screw head edge back side profile
The bevelling matched, entire sunk structure are in horn-like structure, and one end that horn-like structure corresponds to gum is small bore end, corresponding lip cheek
One end is big nose end.
Referring to the installation effect figure of the embodiment one of Fig. 6, two ends that two flat ducts are mounted on arch wire 7 are chosen,
It for upper jaw gum, is used as buccal tube, traction groove 5 can hang spring or rubber band.
Referring to fig. 4~Fig. 5 embodiment two, in embodiment two, fixed part is set as linear type structure, is primarily adapted for use in
Lower jaw gum, the both ends of linear type fixed part are each provided with a fixed hole, totally two fixed holes, between two fixed holes away from
It longitudinally connects from for 3.5mm, interconnecting piece and linear type fixed part and connects and composes whole straight-bar-shaped structure, the length of interconnecting piece
For 6mm, the width of fixed part and interconnecting piece is 1.0mm, and the other structures of embodiment two are the same as example 1, the present embodiment
It is not repeated to describe in two.
Referring to the embodiment three of Fig. 7, the fixed part between two fixed holes of the flat duct in embodiment three is vertical bar
Shape structure, and in embodiment two, the fixed part between two fixed holes of flat duct is the thick horn-like knot in intermediate thin both ends
Structure, remaining structure of embodiment three is identical as embodiment two as size, in addition, choosing two flat duct installations in embodiment three
In two ends of arch wire 7, it is used for lower jaw gum, is used as buccal tube, traction groove 5 can hang spring or rubber band.
The flat duct of the utility model can be used used in grinding one's teeth in sleep outer as buccal tube, but the flat of the utility model is led
Pipe is not only a kind of buccal tube, it can be used in the intraoral any positions such as labial teeth, backteeth, upper dental bed, mandible, gum
On each position the flat duct of the utility model can be set, each flat duct can be closed with two or three titaniums
Golden retaining screw is screwed into alveolar bone, in addition, due to lower jaw can operating space it is narrower than the upper jaw, and lower jaw sclerotin hard one
A bit, two fixed holes are enough, and linear type fixed part is also easier to avoid root of the tooth position, therefore, sets in the utility model
Above two different structure is set, preferably to adapt to maxilla and the respective physilogical characteristics of mandibular.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of correction bone anchorage type flat duct, which is characterized in that including interconnecting piece (2) and be separately connected and be set to interconnecting piece
The flat duct ontology (1) at both ends and fixed part (3), the fixed part for being fixed on jawbone, flat lead by the interconnecting piece
The monolithic construction that tube body and fixed part are integrally formed, the structure of the flat duct ontology are flat, flat duct
The thickness direction of ontology is consistent with by the lip cheek direction direction of tooth, and the lip buccal side of flat duct ontology is set as globoidal structure,
It is provided on flat duct ontology and wears arch wire hole (11).
2. a kind of correction bone anchorage type flat duct according to claim 1, which is characterized in that be arranged on the fixed part
Have at least two for wearing the fixed hole (4) of retaining screw, fixed part and interconnecting piece are integrated the plate-like structure of setting, whole
Body plate thickness is 0.5~1.0mm.
3. a kind of correction bone anchorage type flat duct according to claim 2, which is characterized in that the fixed part is V-shaped
A fixed hole is respectively arranged in structure, two ends of fixed part and corner, and the angle of the corner of fixed part is 90~120 °,
The interconnecting piece and V-arrangement fixed part connect and compose Y-shaped structure, and the length of the interconnecting piece is 4~8mm, and width is 0.8~
1.2mm, one end that the fixed hole corresponds to lip buccal side are provided with and retaining screw head edge back side outline portion or whole
The sunk structure (41) matched.
4. a kind of correction bone anchorage type flat duct according to claim 2, which is characterized in that the fixed part is set as
Linear type structure, the both ends of linear type fixed part are each provided with a fixed hole, and the distance between two fixed holes are 2~
4mm, interconnecting piece and the longitudinally connected straight-bar-shaped structure for constituting entirety of linear type fixed part, the length of interconnecting piece are 4~8mm,
The width of fixed part and interconnecting piece is 0.8~1.2mm.
5. a kind of correction bone anchorage type flat duct according to claim 4, which is characterized in that the flat duct ontology
The size of length direction is 2.2~3mm, and the size in flat duct body width direction is 1.8~2.2mm, flat duct ontology
Thickness is 1~1.5mm.
6. a kind of correction bone anchorage type flat duct according to claim 1, which is characterized in that the flat duct ontology
On to wear arch wire hole horizontally disposed, and wearing arch wire hole is square hole, and the cross section for wearing arch wire hole is rectangle, wears arch wire hole
In rectangular cross section, width direction is consistent with the thickness direction of flat duct ontology, and length direction is arranged along the vertical direction,
It is i.e. consistent with the length direction of interconnecting piece.
7. a kind of correction bone anchorage type flat duct according to claim 6, which is characterized in that described to wear arch wire hole rectangle
The size of the width direction of cross section is 0.022 inch, and the size for wearing arch wire hole rectangular cross section length direction is 0.028 English
It is very little.
8. a kind of correction bone anchorage type flat duct described according to claim 1~any one of 7, which is characterized in that institute
State the traction groove (5) for being provided at the position that flat duct ontology is connect with interconnecting piece and can be used for hanging traction piece, the traction
Groove is lacked to set and be constituted by flat duct ontology and/or interconnecting piece bottom, and the opening of the traction groove is towards fixed part.
9. a kind of correction bone anchorage type flat duct according to claim 8, which is characterized in that draw the width side of groove
To identical as the width direction of interconnecting piece, the traction groove is recessed to the width direction of interconnecting piece in the width direction.
10. a kind of correction bone anchorage type flat duct according to claim 8, which is characterized in that the traction groove is
Two of interconnecting piece post width direction two sides are symmetrically distributed in, the correction bone anchorage type flat duct overall material is
The outer surface corner of titanium alloy, the interconnecting piece and fixed part is set as smooth arc transition, specially setting rounded corner
(6)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920143650.XU CN209645103U (en) | 2019-01-28 | 2019-01-28 | Correction bone anchorage type flat duct |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920143650.XU CN209645103U (en) | 2019-01-28 | 2019-01-28 | Correction bone anchorage type flat duct |
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| CN209645103U true CN209645103U (en) | 2019-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620434A (en) * | 2019-01-28 | 2019-04-16 | 中南大学湘雅二医院 | Correction bone anchorage type flat duct |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620434A (en) * | 2019-01-28 | 2019-04-16 | 中南大学湘雅二医院 | Correction bone anchorage type flat duct |
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