CN114948168A - Angle-adjustable screw guiding and fixing device - Google Patents
Angle-adjustable screw guiding and fixing device Download PDFInfo
- Publication number
- CN114948168A CN114948168A CN202210514350.4A CN202210514350A CN114948168A CN 114948168 A CN114948168 A CN 114948168A CN 202210514350 A CN202210514350 A CN 202210514350A CN 114948168 A CN114948168 A CN 114948168A
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- fixedly connected
- angle
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- fixing
- positioning
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- 238000005086 pumping Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 description 11
- 238000009434 installation Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- 206010056367 Joint tuberculosis Diseases 0.000 description 1
- 208000009360 Osteoarticular Tuberculosis Diseases 0.000 description 1
- 206010031252 Osteomyelitis Diseases 0.000 description 1
- 208000000474 Poliomyelitis Diseases 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 210000002027 skeletal muscle Anatomy 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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Classifications
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- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (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)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The invention provides a screw guiding and fixing device with an adjustable angle, belonging to the technical field of medical instruments; including the registration arm, sliding connection has the support frame on the registration arm, the bottom fixedly connected with handle of support frame, the one end fixedly connected with mounting bracket at the top of registration arm. According to the screw guiding and fixing device, the auxiliary fixing assembly is arranged, the positioning tube is preliminarily limited in position, the situation that the position of the positioning tube moves when a doctor positions a positioning needle is avoided, the positioning position of the positioning tube is influenced, the positioning precision is reduced, the angle adjustment of the guide tube is realized through the arrangement, the mounting frame, the guide tube, the knob, the rotating shaft and the limiting assembly, various angle adjustments can be carried out according to actual requirements, the position is automatically limited, the practicability of the screw guiding and fixing device is improved, the adjusted angle can be conveniently observed through the arrangement of the dial and the pointer, the precision angle adjustment is realized, and the screw mounting angle precision is improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an angle-adjustable screw guiding and fixing device.
Background
Orthopedics is one of the most common departments in various hospitals, mainly studies the anatomy, physiology and pathology of the skeletal muscle system, maintains and develops the normal form and function of the system by using medicines, operations and physical methods, and with the change of times and society, the spectrum of orthopedic injuries has obvious changes, such as: the diseases such as bone joint tuberculosis, osteomyelitis, poliomyelitis and the like are obviously reduced, and the trauma caused by traffic accidents is obviously increased.
When carrying out the bone through the screw and connecting, the doctor can use screw guider to fix a position and guide the screw usually, however current screw guider only sets up the guiding hole of a plurality of different angles, in order to lead to the guiding hole according to the actual choice difference, the position of guiding hole is all fixed, can not satisfy at the actual operation in-process, adjust more angle guiding holes according to actual need, the practicality of screw guider has been reduced, and current screw guider is doctor's hand-held type, lack supplementary limit function, when carrying out the through bolt location to screw guider, the skew takes place easily in screw guider position, influence the precision of operation, therefore, this application provides an adjustable angle's screw direction fixing device and satisfies the demand.
Disclosure of Invention
The invention aims to solve the technical problem that the prior screw guide fixing device with an adjustable angle cannot adjust more angle guide holes according to actual needs in the actual operation process, so that the practicability of the screw guide device is reduced, and the prior screw guide device is handheld by a doctor and lacks an auxiliary limit function, so that the position of the screw guide device is easy to deviate when the screw guide device is subjected to nailing positioning, and the precision of an operation is influenced.
In order to solve the technical problems, the invention provides the following technical scheme:
the screw guiding and fixing device with the adjustable angle comprises a positioning pipe, wherein a support frame is connected onto the positioning pipe in a sliding mode, a handle is fixedly connected to the bottom of the support frame, a mounting frame is fixedly connected to one end of the top of the positioning pipe, the guide pipe is rotatably connected onto the mounting frame through a rotating shaft, a dial is fixedly connected to one side of the mounting frame, a pointer is fixedly connected to one end of the rotating shaft and points to the dial, a knob is fixedly connected to the other end of the rotating shaft, a limiting assembly is fixedly connected onto the mounting frame and used for limiting the angle of the rotating shaft; still include supplementary fixed subassembly, supplementary fixed subassembly is used for the registration arm is spacing.
Preferably, supplementary fixed subassembly includes the sucking disc, one side of handle is rotated and is connected with the driving lever, the spout has been seted up to the bottom of registration arm, the one end of driving lever is located in the spout, the bottom fixedly connected with fixed plate of support frame, the fixed cover has cup jointed the pump bowl on the fixed plate, sucking disc fixed connection be in one of pump bowl is served, sliding connection has the piston in the pump bowl, the one end fixedly connected with stay cord of piston, the one end fixed connection of stay cord is in on the bottom of registration arm, the top fixedly connected with leading wheel of fixed plate, the lateral wall of stay cord with laminate on the lateral wall of leading wheel, the sucking disc is located the place ahead of registration arm.
Preferably, the pull cord is a steel wire pull cord.
Preferably, a pair of sliding grooves is formed in the side wall of the positioning tube, and two sides of the support frame are slidably connected in the sliding grooves.
Preferably, spacing subassembly include fixed connection in fixed axle on one side of the mounting bracket, it has cup jointed the pawl to rotate on the fixed axle, the fixed cup joints the ratchet in the pivot, the one end joint of pawl is in on the ratchet, the mounting bracket with fixedly connected with torsion spring between the pawl.
Preferably, a dial is fixedly connected to one side of the pawl.
Preferably, the bottom of the support frame is provided with a mounting hole, the top of the handle is provided with a threaded hole, and the mounting hole and the threaded hole are in threaded connection with a fixing screw.
Preferably, the top of registration arm has seted up the thread groove, the fixed orifices has been seted up to the bottom of mounting bracket, through the fixed orifices with thread groove threaded connection has fixing bolt.
Preferably, the knob is made of rubber, and a plurality of anti-skidding grooves which are uniformly distributed are formed in the periphery of the side wall of the knob.
Compared with the prior art, the invention at least has the following beneficial effects:
in the scheme, the positioning tube is preliminarily limited in position by arranging the auxiliary fixing assembly, so that the problem that the positioning position of the positioning tube is influenced by the position movement of a doctor when a positioning needle is positioned is avoided, the positioning precision is reduced, the angle adjustment of the guide tube is realized by arranging, mounting frames, the guide tube, knobs, rotating shafts and the limiting assembly, various angle adjustments can be carried out according to actual requirements, the guide tube is automatically limited, the practicability of the screw guide fixing device is improved, the adjusted angle can be conveniently observed by arranging the dial and the pointer, the precision angle adjustment is realized, and the screw installation angle precision is improved;
through setting up the sucking disc, the driving lever, the stay cord, exhaust tube and piston, the sucking disc is tentatively adsorbed with the bone surface, then manual pulling driving lever, the driving lever rotates, the one end of driving lever drives the registration arm and removes and inconsistent with the bone, it removes to drive the stay cord through the registration arm removal, under the effect of leading wheel, stay cord pulling piston removes in the exhaust tube, make the sucking disc be in vacuum state, further improve the suction of sucking disc to the bone, the position stability after the registration arm is spacing has been improved, avoid the doctor when wearing the pilot pin, the position that leads to the registration arm takes place to remove, and precision when influencing the pilot pin location.
Drawings
FIG. 1 is a first perspective view of a screw-mounted screw guide fixture of the adjustable angle type;
FIG. 2 is a schematic view of a second perspective view of the adjustable angle screw guide mounting assembly with screws;
FIG. 3 is a partially cut-away perspective view of the angle adjustable screw guide fixing device;
FIG. 4 is a schematic view of a first perspective enlarged three-dimensional structure of the angle adjustment guide unit;
FIG. 5 is a second perspective enlarged perspective view of the angle adjustment guide unit;
fig. 6 is an enlarged schematic view of a portion a in fig. 3.
[ reference numerals ]
1. A positioning tube; 2. a support frame; 3. a handle; 4. a deflector rod; 5. a fixing plate; 6. an air pumping cylinder; 7. a suction cup; 8. a mounting frame; 9. a guide tube; 10. a dial scale; 11. a knob; 12. a ratchet wheel; 13. a pointer; 14. a pawl; 15. a torsion spring; 16. a piston; 17. pulling a rope; 18. a guide wheel; 19. a chute.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, an embodiment of the present invention provides an angle-adjustable screw guiding and fixing device, which includes a positioning tube 1, a support frame 2 is slidably connected to the positioning tube 1, a handle 3 is fixedly connected to the bottom of the support frame 2, an installation frame 8 is fixedly connected to one end of the top of the positioning tube 1, a guide tube 9 is rotatably connected to the installation frame 8 through a rotating shaft, a dial 10 is fixedly connected to one side of the installation frame 8, a pointer 13 is fixedly connected to one end of the rotating shaft, the pointer 13 points to the dial 10, a knob 11 is fixedly connected to the other end of the rotating shaft, and a limiting assembly is fixedly connected to the installation frame 8 and used for limiting the angle of the rotating shaft; the device also comprises an auxiliary fixing component, the auxiliary fixing component is used for limiting the position of the positioning tube 1, when the screw is fixed, firstly, a doctor holds the handle 3 with hands, one end of the positioning tube 1 is attached to the bone, then, the positioning tube 1 is limited relative to the bone preliminarily through the auxiliary fixing component, then, a guide wire needle penetrates through a positioning hole in the positioning tube 1 to position the positioning tube 1, the position of the nail is penetrated according to actual needs, the knob 11 is rotated manually, the knob 11 rotates to drive the rotating shaft to enable the guide tube 9 to rotate, the angle of the guide tube 9 is accurately adjusted through the pointer 13 and the dial 10, the relative angle position of the guide tube 9 is limited through the limiting component, finally, the screw penetrates through the guide tube 9 to fix the bone, the screw guiding and fixing device is provided, and the initial position limitation of the positioning tube 1 is realized through the auxiliary fixing component, avoid the doctor when carrying out the pilot pin location, the position of registration arm 1 takes place to remove, influence the locating position of registration arm 1, reduce positioning accuracy, through setting up, mounting bracket 8, stand pipe 9, knob 11, the pivot, spacing subassembly, realize the angle modulation of stand pipe 9, can carry out multiple angle modulation according to the actual demand, and automatic spacing, the practicality of screw direction fixing device has been improved, through setting up calibrated scale 10 and pointer 13, be convenient for observe the angle of regulation, realize precision angle modulation, the mounting screw angle precision has been improved.
As an implementation manner in this embodiment, as shown in fig. 1, fig. 3 and fig. 6, the auxiliary fixing assembly includes a suction cup 7, one side of the handle 3 is rotatably connected with a shift lever 4, a bottom of the positioning tube 1 is provided with a sliding slot 19, one end of the shift lever 4 is located in the sliding slot 19, a bottom of the support frame 2 is fixedly connected with a fixing plate 5, where it should be noted that, an avoiding hole is provided on the fixing plate 5, one end of the shift lever 4 runs through the avoiding hole, the fixing plate 5 is fixedly sleeved with a suction cylinder 6, the suction cup 7 is fixedly connected to one end of the suction cylinder 6, a piston 16 is slidably connected in the suction cylinder 6, one end of the piston 16 is fixedly connected with a pull rope 17, one end of the pull rope 17 is fixedly connected to the bottom of the positioning tube 1, a guide wheel 18 is fixedly connected to a top of the fixing plate 5, a side wall of the pull rope 17 is attached to a side wall of the guide wheel 18, the suction cup 7 is located in front of the positioning tube 1, at first sucking disc 7 and the preliminary absorption in bone surface, then manual pulling driving lever 4, driving lever 4 rotates, the one end of driving lever 4 drives registration arm 1 and removes and inconsistent with the bone, it removes to drive stay cord 17 through registration arm 1 and removes, under the effect of leading wheel 18, stay cord 17 pulling piston 16 removes in air cylinder 6, make sucking disc 7 be in vacuum state, further improve the adsorption affinity of sucking disc 7 to the bone, the positional stability behind 1 spacing of registration arm has been improved, avoid the doctor when wearing the pilot pin, the position that leads to registration arm 1 takes place to remove, and the precision when influencing the pilot pin location.
In this embodiment, the pulling rope 17 is a steel wire pulling rope, and the service life of the pulling rope 17 is improved.
In this embodiment, a pair of sliding tray has been seted up on the lateral wall of registration arm 1, and support frame 2's both sides sliding connection is in the sliding tray, and the benefit that sets up like this for registration arm 1 more stable moves on support frame 2.
As an implementation manner in this embodiment, as shown in fig. 4 and 5, the limiting component includes a fixing shaft fixedly connected to one side of the mounting frame 8, a pawl 14 is rotatably sleeved on the fixing shaft, a ratchet 12 is fixedly sleeved on the rotating shaft, one end of the pawl 14 is clamped on the ratchet 12, a torsion spring 15 is fixedly connected between the mounting frame 8 and the pawl 14, and by arranging the ratchet 12, the pawl 14 and the torsion spring 15, after the angular rotation of the guide tube 9 is realized, the limiting is automatic, the structure is simple, and the operation is convenient.
In this embodiment, a dial is fixedly connected to one side of the ratchet 14, and when the ratchet 12 is reversed, the ratchet 14 is released from the limit by the dial.
As an implementation manner in this embodiment, as shown in fig. 1, a mounting hole is formed at the bottom of the support frame 2, a threaded hole is formed at the top of the handle 3, and a fixing screw is connected to the support frame 2 and the handle 3 through the mounting hole and the threaded hole in a threaded manner, so that the support frame 2 and the handle 3 can be conveniently mounted and dismounted.
As an implementation manner in this embodiment, as shown in fig. 2, a thread groove is formed at the top of the positioning tube 1, a fixing hole is formed at the bottom of the mounting bracket 8, and a fixing bolt is connected to the fixing hole and the thread groove through a thread, so that the mounting bracket 8 and the positioning tube 1 can be conveniently mounted and dismounted.
As an implementation manner in this embodiment, as shown in fig. 4, the knob 11 is made of rubber, and a plurality of anti-slip grooves are uniformly distributed on the circumference of the sidewall of the knob 11, so that the friction is improved, and a doctor can conveniently stir the knob 11 to rotate.
According to the technical scheme provided by the invention, the positioning tube is initially limited in position by arranging the auxiliary fixing component, so that the problem that the positioning position of the positioning tube is influenced by the position movement of a doctor when a positioning needle is positioned is avoided, the positioning precision is reduced, the angle adjustment of the guide tube is realized by arranging, mounting frames, guide tubes, knobs, rotating shafts and limiting components, various angle adjustments can be carried out according to actual requirements, the automatic limiting is realized, the practicability of the screw guiding and fixing device is improved, the adjusted angle can be conveniently observed by arranging the dial and the pointer, the precision angle adjustment is realized, and the screw mounting angle precision is improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. An angle adjustable screw guide fixing device, comprising:
the positioning pipe is connected with a support frame in a sliding manner;
the bottom of the supporting frame is fixedly connected with a handle, one end of the top of the positioning tube is fixedly connected with a mounting frame, and the mounting frame is rotatably connected with a guide tube through a rotating shaft;
a dial is fixedly connected to one side of the mounting frame, a pointer is fixedly connected to one end of the rotating shaft and points to the dial, a knob is fixedly connected to the other end of the rotating shaft, and a limiting assembly is fixedly connected to the mounting frame and used for limiting the angle of the rotating shaft;
still include supplementary fixed subassembly, supplementary fixed subassembly is used for the registration arm is spacing.
2. The adjustable angle screw guiding fixing device according to claim 1, wherein the auxiliary fixing component includes a suction cup, one side of the handle is rotatably connected with a driving lever, a sliding groove is formed in the bottom of the positioning tube, one end of the driving lever is located in the sliding groove, a fixing plate is fixedly connected to the bottom of the supporting frame, an air pumping cylinder is fixedly sleeved on the fixing plate, the suction cup is fixedly connected to one end of the air pumping cylinder, a piston is slidably connected in the air pumping cylinder, a pulling rope is fixedly connected to one end of the piston, one end of the pulling rope is fixedly connected to the bottom of the positioning tube, a guide wheel is fixedly connected to the top of the fixing plate, a side wall of the pulling rope is attached to a side wall of the guide wheel, and the suction cup is located in front of the positioning tube.
3. The adjustable angle screw guide fixation device of claim 2, wherein the pull cord is a steel wire pull cord.
4. The adjustable angle screw guiding and fixing device of claim 1, wherein a pair of sliding grooves are formed on the side wall of the positioning tube, and two sides of the supporting frame are slidably connected in the sliding grooves.
5. The adjustable angle screw guiding and fixing device according to claim 1, wherein the limiting component comprises a fixed shaft fixedly connected to one side of the mounting bracket, a pawl is rotatably sleeved on the fixed shaft, a ratchet wheel is fixedly sleeved on the rotating shaft, one end of the pawl is clamped on the ratchet wheel, and a torsion spring is fixedly connected between the mounting bracket and the pawl.
6. The adjustable angle screw guide fixation device of claim 5, wherein a dial is fixedly attached to one side of the pawl.
7. The adjustable angle screw guiding fixture of claim 1, wherein the bottom of the support frame is provided with a mounting hole, the top of the handle is provided with a threaded hole, and a fixing screw is connected with the threaded hole through the mounting hole.
8. The angle-adjustable screw guiding and fixing device according to claim 1, wherein a threaded groove is formed at the top of the positioning tube, a fixing hole is formed at the bottom of the mounting frame, and a fixing bolt is connected to the threaded groove through the fixing hole.
9. The angle-adjustable screw guiding and fixing device according to claim 1, wherein the knob is made of rubber, and a plurality of anti-slip grooves are uniformly distributed around the side wall of the knob.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202210514350.4A CN114948168B (en) | 2022-05-12 | 2022-05-12 | Angle-adjustable screw guiding and fixing device |
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CN202210514350.4A CN114948168B (en) | 2022-05-12 | 2022-05-12 | Angle-adjustable screw guiding and fixing device |
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CN114948168A true CN114948168A (en) | 2022-08-30 |
CN114948168B CN114948168B (en) | 2022-12-30 |
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CN214805106U (en) * | 2021-01-21 | 2021-11-23 | 重庆市中医骨科医院 | Traditional chinese medical science is drilling guider for orthopedics |
CN214906652U (en) * | 2021-03-30 | 2021-11-30 | 吉林大学 | Convenient children's bronchoscope auxiliary fixation frame who adjusts |
CN215130361U (en) * | 2021-06-05 | 2021-12-14 | 资阳市第一人民医院 | Special positioner of orthopedics joint |
WO2022057656A1 (en) * | 2020-09-21 | 2022-03-24 | 深圳市道通科技股份有限公司 | Wheel hub clamping device |
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US20040106928A1 (en) * | 2002-12-03 | 2004-06-03 | Steven Ek | Tibial resurfacing system |
CN101987034A (en) * | 2009-08-06 | 2011-03-23 | 唐亮 | Spinal pedicle screw positioning and guiding device |
WO2012048480A1 (en) * | 2010-10-15 | 2012-04-19 | 上海交通大学医学院附属新华医院 | Surgical tool for installing epiphysiodesis internal 8-shaped steel plate |
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CN207545195U (en) * | 2017-03-29 | 2018-06-29 | 刘斌 | A kind of pedicle of vertebral arch puts nail guider |
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CN209136830U (en) * | 2018-06-14 | 2019-07-23 | 史航 | It is guide locating device provided that a kind of novel Cervical vertebra nut sets nail |
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CN213372426U (en) * | 2020-06-23 | 2021-06-08 | 田松 | Kirschner wire auxiliary positioning device |
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CN214318112U (en) * | 2020-12-11 | 2021-10-01 | 段春云 | Obstetrical department fetal head attracts practise midwifery device |
CN214805106U (en) * | 2021-01-21 | 2021-11-23 | 重庆市中医骨科医院 | Traditional chinese medical science is drilling guider for orthopedics |
CN214906652U (en) * | 2021-03-30 | 2021-11-30 | 吉林大学 | Convenient children's bronchoscope auxiliary fixation frame who adjusts |
CN215130361U (en) * | 2021-06-05 | 2021-12-14 | 资阳市第一人民医院 | Special positioner of orthopedics joint |
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