CN110384551A - A kind of outer fixed angle concertina type correction system - Google Patents
A kind of outer fixed angle concertina type correction system Download PDFInfo
- Publication number
- CN110384551A CN110384551A CN201910559792.9A CN201910559792A CN110384551A CN 110384551 A CN110384551 A CN 110384551A CN 201910559792 A CN201910559792 A CN 201910559792A CN 110384551 A CN110384551 A CN 110384551A
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- China
- Prior art keywords
- guide sleeve
- main body
- adjustment gear
- outer fixed
- fixed angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012937 correction Methods 0.000 title claims abstract description 31
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 46
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 27
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims 1
- 230000000399 orthopedic effect Effects 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 6
- 238000010079 rubber tapping Methods 0.000 abstract description 5
- 230000011164 ossification Effects 0.000 abstract description 4
- 208000032984 Intraoperative Complications Diseases 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 206010003246 arthritis Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 210000000629 knee joint Anatomy 0.000 description 3
- 210000004197 pelvis Anatomy 0.000 description 3
- 208000002658 Intra-Articular Fractures Diseases 0.000 description 2
- 210000000544 articulatio talocruralis Anatomy 0.000 description 2
- 210000002310 elbow joint Anatomy 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 208000037873 arthrodesis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a kind of outer fixed angle concertina type correction systems, including main body, attachment screw, guide sleeve, adjustment gear, regulation handle, lower clamp, upper clamp and metal bone needle, main body is equipped with guide sleeve by keyway, adjustment gear is provided on guide sleeve, adjustment gear is engaged with the gear in main body, regulation handle is also equipped in adjustment gear, guide sleeve is moved in main body by adjustment gear and regulation handle, and main body is also mounted on lower clamp.A kind of outer fixed angle concertina type correction system of the present invention, meets body mechanics' principle, applied widely, stability is good, Micro-operation, surgical injury is small, and closed reduction can be used, utilize distraction osteogenesis principle, the no longer bone grafting in osteotomy is orthopedic can avoid causing to shorten deformity, it is orthopedic also to complete osteotomy to small bone block, external fixing rack match share metal bone needle screw head design have cutting edge can self tapping from boring, form of thread be it is trapezoidal prevent from loosening greatly reduce the complication of spicule.
Description
Technical field
The present invention relates to the field of medical instrument technology, specially a kind of outer fixed angle concertina type correction system.
Background technique
Exterior fixing rack technology is using very extensively in terms for the treatment of orthopaedics, and there are advantages below for exterior fixing rack: 1, fitting
Wide with range, modern external fixing rack reliable in quality, stability is good, and assembling form is versatile and flexible；2, fixed reliable, it is modern outer fixed
For system by constantly improving and studying, stability is very reliable, leads in fixation procedure because external fixing rack is unstable
The fracture end displacement of cause is extremely rare with angulation；3, fixed range is big, must for some adjacent joints or intra-articular fracture
Over-articular fixation can be used when wanting, to increase fixed stability, this is that interior fixation is unable to reach；4, Micro-operation, operation
Damage it is small, using closed reduction.
But in use, it is closed for shifting, the correction of elbow joint deformity, ankle outside the line of force of knee joint osseous arthritis
The orthopedic quasi-tradition products such as the lopsided correction of section, the correction of old fractures of pelvis have the shortcomings that following: 1, volume is big, lives
Nursing is inconvenient；2, the fixed difficult disadvantage of nearly joint part；3, the related complication of spicule is most, including the pine of needle
Dynamic, pin site infection.
Summary of the invention
The purpose of the present invention is to provide a kind of outer fixed angle concertina type correction systems, meet body mechanics' principle, fit
Wide with range, stability is good, and Micro-operation, surgical injury is small, and closed reduction can be used, using distraction osteogenesis principle, in osteotomy
No longer bone grafting in orthopedic can avoid causing to shorten deformity, and it is orthopedic also to complete osteotomy to small bone block, and external fixing rack is with sharing gold
Belong to spicule screw head design have cutting edge can self tapping from bore, form of thread be it is trapezoidal prevent loosen greatly reduce spicule and
Disease is sent out, can solve the problems of the prior art.
To achieve the above object, the invention provides the following technical scheme: a kind of outer fixed angle concertina type correction system, packet
Main body, attachment screw, guide sleeve, adjustment gear, regulation handle, lower clamp, upper clamp and metal bone needle are included, the main body passes through
Keyway is equipped with guide sleeve, and shaft is provided with adjustment gear on the guide sleeve, and the adjustment gear is mounted in shaft,
One end of the shaft is mounted on the inner wall of guide sleeve, and the other end of the shaft passes through guide sleeve and extends to the outer of guide sleeve
Side is connected with regulation handle, and the adjustment gear is engaged with the gear in main body, and the guide sleeve passes through adjustment gear and adjusting
Handle moves in main body, and the main body is also mounted on lower clamp, and the lower clamp is connect with upper clamp, the lower clamp and
Metal bone needle is installed, the metal bone needle is connected with the first bone block, institute far from one end of lower clamp and upper clamp on upper clamp
It states guide sleeve and also passes through attachment screw and be connected with metal bone needle, the metal bone needle is connected with the second bone far from one end of guide sleeve
Block.
Preferably, the main body and guide sleeve cooperate with the mouse tooth of lower clamp, and mouse tooth is divided into 60 parts, and single adjusting can
6 ° of control.
Preferably, diamond shape slot is provided on the lower clamp and upper clamp.
Preferably, the tail portion of the attachment screw uses interior hexagonal structure.
Preferably, the screw head of the metal bone needle be equipped with cutting edge, form of thread be it is trapezoidal, tail portion using four directions knot
Structure.
Preferably, the attachment screw is made of the titanium alloy material of good biocompatibility and corrosion resistance.
Compared with prior art, beneficial effects of the present invention are as follows:
A kind of outer fixed angle concertina type correction system of the present invention is shifting outside the line of force of knee joint osseous arthritis, elbow pass
The disease for saving the orthopedic classes such as the correction of deformity, the correction of ankle-joint deformity, the correction of old fractures of pelvis provides a set of meet
The correction system of body mechanics' principle, Individual design, rectifier volume greatly reduce, and overcome other external fixing racks to fixation
Position wants cube big and the fixed difficult disadvantage of nearly joint part, and applied widely, stability is good, Micro-operation, operation damage
Hurt small, closed reduction can be used, using distraction osteogenesis principle, the no longer bone grafting in osteotomy is orthopedic can avoid causing to shorten deformity,
Can also complete that osteotomy is orthopedic to small bone block, external fixing rack match share metal bone needle screw head design have cutting edge can self tapping from
It bores, form of thread is the trapezoidal complication for preventing loosening from greatly reducing spicule.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of outer fixed angle concertina type correction system of the invention；
Fig. 2 is the cross sectional side view that main body of the invention is connected with guide sleeve；
Fig. 3 is the top view that main body of the invention is connected with adjustment gear；
Fig. 4 is the front view that main body of the invention is connected with adjustment gear.
In figure: 1, main body；2, attachment screw；3, guide sleeve；31, shaft；4, adjustment gear；5, regulation handle；6, lower folder
Body；7, upper clamp；8, metal bone needle；9, the first bone block；10, the second bone block.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-4, a kind of outer fixed angle concertina type correction system, including main body 1, attachment screw 2, guide sleeve 3,
Adjustment gear 4, regulation handle 5, lower clamp 6, upper clamp 7 and metal bone needle 8, the outer fixed angle concertina type correction system use
The stainless steel or titanium alloy or aluminum alloy materials of excellent mechanical performances and rotproofness are made, the outer fixed angle concertina type correction system
System, applied widely, reliable in quality, stability is good, and assembling form is versatile and flexible, fixed reliable, by constantly improving and grinding
Study carefully, stability is very reliable, because fracture end caused by external fixing rack is unstable is shifted with angulation in fixation procedure
Extremely rare, fixed range is big, for some adjacent joints or intra-articular fracture, Over-articular fixation can be used when necessary to increase
The stability being fixed, this is that interior fixation is unable to reach, and Micro-operation, surgical injury is small, and using closed reduction, main body 1 is logical
It crosses keyway and guide sleeve 3 is installed, flexibly can carry out on the body 1 back and forth movement by adjustment gear 4, pass through on guide sleeve 3
Shaft 31 is provided with adjustment gear 4, and adjustment gear 4 is mounted in shaft 31, and one end of shaft 31 is mounted on the inner wall of guide sleeve 3
On, the other end of shaft 31 is connected with regulation handle 5 across the outside that guide sleeve 3 extends to guide sleeve 3, passes through regulation handle 5
Shaft 31 and adjustment gear 4 is driven to rotate, since adjustment gear 4 engages and the fixation of main body 1 with the gear in main body 1, In
During adjustment gear 4 rotates, guide sleeve 3 can carry out back and forth movement, the gear in adjustment gear 4 and main body 1 on the body 1
It engages, the angle of bone block, the adjusting model of gear are adjusted with merga pass regulation handle 5 for the gear and adjustment gear 4 in main body 1
Enclosing is 1 °~50 °, can be accurately controlled adjusting angle, and the mouse tooth cooperation in main body 1 and lower clamp 6 can accurately adjust the first bone block
9 angle, the osteotomy slot in main body 1 accurately control osteotomy site, and measurement external fixing rack matches the length for sharing metal bone needle 8,
Guide sleeve 3 is moved on the body 1 by adjustment gear 4 and regulation handle 5, and guide sleeve 3 and 1 guide rail of main body fit through adjusting tooth
Wheel 4 is adjusted to advance along guide rail, the mouse tooth cooperation on guide sleeve 3 and lower clamp 6 can accurate regulating external fixing frame with sharing metal bone
Angle of the needle 8 in the second bone block 10, is applicable in the fracture and malformation correction of various complexity, and main body 1 is also mounted on lower clamp 6,
Main body 1 and guide sleeve 3 cooperate with the mouse tooth of lower clamp 6, and mouse tooth is divided into 60 parts, and single, which is adjusted, can control 6 °, can pass through control
External fixing rack processed, which is matched, shares the angle that metal bone needle 8 adjusts bone block, and lower clamp 6 is connect with upper clamp 7, lower clamp 6 and upper clamp 7
On be provided with diamond shape slot, the diamond shape slot of lower clamp 6 and upper clamp 7 can fix the outer fixation of different-diameter by attachment screw 2
Frame and complexed metal spicule 8 are applicable to different patient demands, can flexible operating, gold is installed on lower clamp 6 and upper clamp 7
Belong to spicule 8, metal bone needle 8 is connected with the first bone block 9 far from one end of lower clamp 6 and upper clamp 7, and guide sleeve 3 also passes through connection
Screw 2 is connected with metal bone needle 8, and the tail portion of attachment screw 2 uses interior hexagonal structure, so that it is easy to operate and quick, connect spiral shell
Nail 2 is made of the titanium alloy material of good biocompatibility and corrosion resistance, and the screw head of metal bone needle 8 is equipped with cutting edge,
Can self tapping from bore, form of thread be it is trapezoidal, can prevent external fixing rack with share metal bone needle 8 loosening exit, tail portion using four directions
Structure can be quickly implanted into instrument cooperation in use, and metal bone needle 8 is connected with the second bone block 10 far from one end of guide sleeve 3.
In summary: a kind of outer fixed angle concertina type correction system of the present invention is the line of force of knee joint osseous arthritis
The disease of the orthopedic classes such as outer shifting, the correction of elbow joint deformity, the correction of ankle-joint deformity, the correction of old fractures of pelvis provides
A set of correction system for meeting body mechanics' principle, Individual design, rectifier volume greatly reduce, and it is outer fixed to overcome other
Frame wants cube big fixed position and the disadvantage of nearly arthrodesis difficulty, and applied widely, stability is good, Micro-operation, hand
Art damage is small, and closed reduction can be used, and using distraction osteogenesis principle, the no longer bone grafting in osteotomy is orthopedic can avoid causing to shorten
Deformity, can also complete that osteotomy is orthopedic to small bone block, and external fixing rack, which matches the screw head design for sharing metal bone needle 8, has cutting edge can
For self tapping from boring, form of thread is the trapezoidal complication for preventing loosening from greatly reducing spicule.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of outer fixed angle concertina type correction system, including main body (1), attachment screw (2), guide sleeve (3), adjustment gear
(4), regulation handle (5), lower clamp (6), upper clamp (7) and metal bone needle (8), it is characterised in that: the main body (1) passes through key
Slot is equipped with guide sleeve (3), and shaft (31) are provided with adjustment gear (4), the adjustment gear on the guide sleeve (3)
(4) it is mounted on shaft (31), one end of the shaft (31) is mounted on the inner wall of guide sleeve (3), the shaft (31)
The other end is extended on the outside of guide sleeve (3) across guide sleeve (3) and is connected with regulation handle (5), the adjustment gear (4) and master
Gear engagement on body (1), the guide sleeve (3) are moved on main body (1) by adjustment gear (4) and regulation handle (5), institute
It states main body (1) to be also mounted on lower clamp (6), the lower clamp (6) connect with upper clamp (7), the lower clamp (6) and upper folder
It is equipped on body (7) metal bone needle (8), the metal bone needle (8) is connected with far from lower clamp (6) and one end of upper clamp (7)
First bone block (9), the guide sleeve (3) are also connected with metal bone needle (8) by attachment screw (2), and the metal bone needle (8) is remote
One end from guide sleeve (3) is connected with the second bone block (10).
2. a kind of outer fixed angle concertina type correction system according to claim 1, it is characterised in that: the main body (1)
Cooperate with the mouse tooth of lower clamp (6) with guide sleeve (3), mouse tooth is divided into 60 parts, and single adjusts 6 ° controllable.
3. a kind of outer fixed angle concertina type correction system according to claim 1, it is characterised in that: the lower clamp
(6) and on upper clamp (7) it is provided with diamond shape slot.
4. a kind of outer fixed angle concertina type correction system according to claim 1, it is characterised in that: the attachment screw
(2) tail portion uses interior hexagonal structure.
5. a kind of outer fixed angle concertina type correction system according to claim 1, it is characterised in that: the metal bone needle
(8) screw head be equipped with cutting edge, form of thread be it is trapezoidal, tail portion use tetragonal.
6. a kind of outer fixed angle concertina type correction system according to claim 1, it is characterised in that: the attachment screw
(2) it is made of the titanium alloy material of good biocompatibility and corrosion resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910559792.9A CN110384551A (en) | 2019-06-26 | 2019-06-26 | A kind of outer fixed angle concertina type correction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910559792.9A CN110384551A (en) | 2019-06-26 | 2019-06-26 | A kind of outer fixed angle concertina type correction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110384551A true CN110384551A (en) | 2019-10-29 |
Family
ID=68285956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910559792.9A Pending CN110384551A (en) | 2019-06-26 | 2019-06-26 | A kind of outer fixed angle concertina type correction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110384551A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113081207A (en) * | 2021-03-31 | 2021-07-09 | 大博医疗科技股份有限公司 | Precise telescopic adjustable periosteum stretching system and use method thereof |
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| CN2393489Y (en) * | 1999-09-02 | 2000-08-30 | 曾祥瑞 | Universal external fixater for limb fracture and other diseases |
| CN202069670U (en) * | 2011-05-19 | 2011-12-14 | 于静之 | Bone nail reset retractor |
| CN106691558A (en) * | 2015-08-06 | 2017-05-24 | 天津市威曼生物材料有限公司 | Tibia proximal combined type fixing device |
| CN106974713A (en) * | 2017-03-31 | 2017-07-25 | 张银顺 | A kind of way of escape Study of Atlas Fracture by Finite reduction fixture device |
| CN206910427U (en) * | 2017-01-20 | 2018-01-23 | 滨州医学院附属医院 | A kind of adjustable lower limb fixing device |
| CN108245233A (en) * | 2018-01-25 | 2018-07-06 | 北京中安泰华科技有限公司 | The multi-purpose universal reset bone of one kind moves stent |
| CN208640987U (en) * | 2018-01-23 | 2019-03-26 | 赵淑潭 | A kind of cervical vertebra correcting device |
| CN208725972U (en) * | 2018-03-21 | 2019-04-12 | 广州潘赛缇医疗器械有限公司 | A kind of bracket of matching treatment corrective shoes |
| CN210541777U (en) * | 2019-06-26 | 2020-05-19 | 中国人民解放军联勤保障部队第960医院 | External fixed angle telescopic correction system |
-
2019
- 2019-06-26 CN CN201910559792.9A patent/CN110384551A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2393489Y (en) * | 1999-09-02 | 2000-08-30 | 曾祥瑞 | Universal external fixater for limb fracture and other diseases |
| CN202069670U (en) * | 2011-05-19 | 2011-12-14 | 于静之 | Bone nail reset retractor |
| CN106691558A (en) * | 2015-08-06 | 2017-05-24 | 天津市威曼生物材料有限公司 | Tibia proximal combined type fixing device |
| CN206910427U (en) * | 2017-01-20 | 2018-01-23 | 滨州医学院附属医院 | A kind of adjustable lower limb fixing device |
| CN106974713A (en) * | 2017-03-31 | 2017-07-25 | 张银顺 | A kind of way of escape Study of Atlas Fracture by Finite reduction fixture device |
| CN208640987U (en) * | 2018-01-23 | 2019-03-26 | 赵淑潭 | A kind of cervical vertebra correcting device |
| CN108245233A (en) * | 2018-01-25 | 2018-07-06 | 北京中安泰华科技有限公司 | The multi-purpose universal reset bone of one kind moves stent |
| CN208725972U (en) * | 2018-03-21 | 2019-04-12 | 广州潘赛缇医疗器械有限公司 | A kind of bracket of matching treatment corrective shoes |
| CN210541777U (en) * | 2019-06-26 | 2020-05-19 | 中国人民解放军联勤保障部队第960医院 | External fixed angle telescopic correction system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113081207A (en) * | 2021-03-31 | 2021-07-09 | 大博医疗科技股份有限公司 | Precise telescopic adjustable periosteum stretching system and use method thereof |
| CN113081207B (en) * | 2021-03-31 | 2022-08-16 | 大博医疗科技股份有限公司 | Precise telescopic adjustable periosteum stretching system and use method thereof |
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