CN114533235A - Children epiphyseal plate damage fixing device that resets - Google Patents
Children epiphyseal plate damage fixing device that resets Download PDFInfo
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- CN114533235A CN114533235A CN202210177987.9A CN202210177987A CN114533235A CN 114533235 A CN114533235 A CN 114533235A CN 202210177987 A CN202210177987 A CN 202210177987A CN 114533235 A CN114533235 A CN 114533235A
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- fixing
- epiphyseal
- steel plate
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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
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
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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
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1604—Chisels; Rongeurs; Punches; Stamps
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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
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
- A61B17/1668—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the upper femur
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/74—Devices for the head or neck or trochanter of the femur
- A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
- A61B17/746—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to a plate opposite the femoral head
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Biomedical Technology (AREA)
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- Veterinary Medicine (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)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Neurology (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention provides a reduction and fixation device for injury of epiphyseal plates of children, belonging to the technical field of medical instruments; comprises a steel plate, a fixing mechanism, an antiskid mechanism and a propping mechanism; the opening mechanism comprises a limiting column, the limiting column is of a hollow structure, the inner wall of the bottom of the limiting column is rotatably connected with a rotating rod, the top of the rotating rod is fixedly connected with a rotating block, the outer ring of the rotating rod is connected with a limiting cylinder through threads, and the outer ring of the limiting cylinder is fixedly connected with the inner ring of the limiting column. The invention can strut and limit the scribed muscle, thereby assisting the external medical strut device, avoiding the failure of the medical strut device to cause the failure of the operation, improving the success rate of the operation, enabling the inner nail to slowly break away from the steel nail, increasing the length of the fixing mechanism, adapting to fracture lines at different depths, increasing the practicability, simultaneously increasing the friction force between the gasket and the steel plate through the anti-skid mechanism, avoiding the steel nail from breaking away due to the movement of children, and increasing the pain of patients.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a reduction and fixation device for injury of a child epiphyseal plate.
Background
The epiphyseal plate only has one-way cartilage proliferation and osteogenesis activities, is a growth and development part of a growing period bone, and can be divided into four layers from the histology: the method comprises the following steps of a static layer, a proliferative layer, a hypertrophic layer and a calcified layer, wherein when an epiphyseal plate develops to a mature stage, cartilage proliferation and osteogenic activity are sequentially ended, finally, the epiphyseal plate is completely ossified, the epiphyseal is fused with a metaphyseal, the longitudinal growth of long bones is stopped and strictly distinguished, and the epiphyseal has two types, namely a compressive epiphyseal and a tensile epiphyseal which both have corresponding epiphyseal plates.
But children epiphyseal plate damage back, need fix the fracture position through the operation, but traditional fixed mode is at fixed in-process, lack supplementary distraction mechanism, it can directly lead to the operation failure to strut the utensil inefficacy when medical, and when fixing through the steel nail, can be because children are good at and break away from because the steel nail that leads to, patient's misery has been increased, the steel nail size is fixed simultaneously, in the face of the fracture line of the different degree of depth, need to change the steel nail of different sizes, when the steel nail of required size is lacked, can directly delay the operation time, make the painful time extension of patient.
Disclosure of Invention
The invention aims to solve the technical problem of providing a reduction and fixation device for children epiphyseal plate injury so as to solve the existing problems.
In order to solve the technical problems, the invention provides the following technical scheme:
a child epiphyseal injury reduction fixation device comprising: the device comprises a steel plate, a fixing mechanism, an anti-skidding mechanism and a spreading mechanism; the opening mechanism comprises a limiting column, the limiting column is of a hollow structure, the inner wall of the bottom of the limiting column is rotatably connected with a rotating rod, the top of the rotating rod is fixedly connected with a rotating block, the outer ring of the rotating rod is connected with a limiting cylinder through threads, the outer ring of the limiting cylinder is fixedly connected with the inner ring of the limiting column, the outer ring of the rotating rod is provided with a connecting rope, the other end of the connecting rope is fixedly connected with a fixing ring, the inner ring of the fixing ring is rotatably sleeved with a fixing shaft, the fixing shaft is rotatably sleeved with a first opening rod and a second opening rod, and the first opening rod and the second opening rod are fixedly connected with limiting springs; the fixing mechanism is used for adapting to fracture lines with different depths; the anti-skid mechanism is used for preventing the steel nail from separating from the steel plate.
Preferably, the fixing mechanism comprises a steel nail rotatably sleeved on the steel plate, and an inner nail is connected in the steel nail through threads.
Preferably, anti-skidding mechanism is including setting up the packing ring on the steel sheet, the top and the bottom of packing ring all set up flutedly, two rubber tubes of fixedly connected with on the recess, fixedly connected with connecting pipe on the rubber tube, the fixed cover of the one end that the rubber tube was kept away from to the connecting pipe has cup jointed the discharge, fixedly connected with rubber arc piece on the discharge, the fixed slot has been seted up at the top of rubber tube, fixedly connected with a plurality of evenly distributed's rubber post on the fixed slot.
Preferably, the outer lane fixedly connected with stop collar of spacing post, it is connected with two connecting rods to rotate on the lateral wall of stop collar, two the other end of connecting rod respectively with first pole and the second pole sliding connection that struts.
Preferably, the steel plate is provided with a limiting groove, and the inner ring of the limiting groove is fixedly connected with a plurality of clamping blocks.
Preferably, the outer ring of the limiting column is provided with a plurality of clamping grooves.
Preferably, the top of the rotating block is provided with a cross groove or a straight groove.
Preferably, a plurality of limiting grooves are formed in the steel plate, and the gasket is located in the limiting grooves.
Preferably, the outer rings of the steel nail and the inner nail are provided with threads.
Compared with the prior art, the invention at least has the following beneficial effects:
according to the scheme, when the medical distracter is used, a doctor inserts the clamping groove of the limiting column into the clamping block, so that the limiting column is connected with the steel plate, then the rotating rod is rotated through the tool reverse rotation rotating block, the rotating rod rotates, so that the connecting rope is connected, the rotating rod is limited due to the fact that the rotating rod is in threaded connection with the limiting cylinder, the connecting rope moves under the action of the limiting spring, the first opening rod and the second opening rod are opened, so that the connecting rod slides on the first opening rod and the second opening rod, the first opening rod and the second opening rod are assisted to be opened, the opened muscle is limited in an opening mode, and external medical opening appliances are assisted; through the fixing mechanism, after the muscles are spread, a doctor punches the thighbone through a special medical appliance, then drives the steel nail into the femoral neck metaphysis through the through hole, then rotates the inner nail through a special tool, so that the inner nail is slowly separated from the steel nail and passes through the fracture line, the length of the fixing mechanism is increased, the practicability is increased, the damaged epiphysis is fixedly connected, and the fracture part is effectively fixed; through the antiskid mechanism, in the fixing process, the gasket is firstly placed in the fixed groove, the steel nail is in close contact with the gasket through a special tool, the steel nail is abutted against the top of the gasket, the rubber tube is compressed, gas in the rubber tube enters the gas collecting tube through the connecting tube, the gas collecting tube is expanded, the rubber arc block is abutted against the steel nail, the friction force between the steel nail and the top of the gasket is increased, meanwhile, under the action of the rubber column, the friction force is further increased, and similarly, the bottom of the gasket is provided with a mechanism which is the same as the top, so that the friction force between the gasket and a steel plate is increased, the steel nail is prevented from being separated due to the movement of a child, the application can strut and limit the ripped muscle, thereby assisting an external medical appliance to strut, avoiding the failure of the medical appliance to cause an operation, the success rate of the operation is improved, and the inner nail can be slowly separated from the steel nail, increase fixed establishment's length, the broken line of the different degree of depth of adaptation for the practicality increases, increases frictional force between packing ring and the steel sheet through anti-skidding mechanism simultaneously, avoids children because the good movement leads to the steel nail to break away from, has increased patient's misery.
Drawings
FIG. 1 is a perspective view of a reduction fixture for injury to the epiphyseal plate of a child;
FIG. 2 is a schematic perspective view of a steel plate;
FIG. 3 is a schematic view of a partial cross-sectional perspective structure of a child epiphyseal injury reduction fixation device;
FIG. 4 is a schematic bottom view of the distracting mechanism;
FIG. 5 is a schematic perspective view of a steel nail;
FIG. 6 is a schematic perspective view of a gasket;
FIG. 7 is an enlarged view of the structure at A in FIG. 6;
FIG. 8 is a perspective second perspective structural view of the gasket;
fig. 9 is an enlarged schematic view of B in fig. 3.
[ reference numerals ]
1. A steel plate; 2. a first spreader bar; 3. rotating the block; 4. a limiting column; 5. a limiting sleeve; 6. connecting ropes; 7. a connecting rod; 8. steel nails; 9. a limiting spring; 10. a gasket; 11. inner nails; 12. a clamping block; 13. a groove; 14. a rotating rod; 15. a limiting cylinder; 16. a rubber tube; 17. a connecting pipe; 18. a rubber column; 19. a gas collecting pipe; 20. a rubber arc block; 21. a second spreader bar; 22. a fixing ring; 23. and fixing the shaft.
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, 3 and 4, embodiments of the present invention provide a child epiphyseal injury reduction fixation device comprising: the device comprises a steel plate 1, a fixing mechanism, an anti-skidding mechanism and a spreading mechanism; the opening mechanism comprises a limiting column 4, the limiting column 4 is of a hollow structure, the inner wall of the bottom of the limiting column is rotatably connected with a rotating rod 14, the top of the rotating rod 14 is fixedly connected with a rotating block 3, the outer ring of the rotating rod 14 is connected with a limiting cylinder 15 through threads, the outer ring of the limiting cylinder 15 is fixedly connected with the inner ring of the limiting column 4, the outer ring of the rotating rod 14 is provided with a connecting rope 6, the other end of the connecting rope 6 is fixedly connected with a fixing ring 22, the inner ring of the fixing ring 22 is rotatably sleeved with a fixing shaft 23, a first opening rod 2 and a second opening rod 21 are rotatably sleeved on the fixing shaft 23, and a limiting spring 9 is fixedly connected on the first opening rod 2 and the second opening rod 21; the fixing mechanism is used for fixing fracture lines which adapt to different depths; anti-skidding mechanism is used for preventing that steel nail 8 from breaking away from steel sheet 1, through setting up distraction mechanism, during the use, the doctor pegs graft with spacing post 4's draw-in groove and fixture block 12, thereby make spacing post 4 be connected with steel sheet 1, later make bull stick 14 rotate through instrument reversal turning block 3, bull stick 14 rotates thereby to make connection rope 6, because bull stick 14 passes through threaded connection with spacing section of thick bamboo 15, thereby it is spacing to bull stick 14, connect rope 6 motion under spacing spring 9's effect, make first distraction rod 2 and second distraction rod 21 open, thereby make connecting rod 7 slide on first distraction rod 2 and second distraction rod 21, supplementary first distraction rod 2 and second distraction rod 21 open, it is spacing to strut the muscle of ruling, supplementary external medical utensil that struts.
As an implementation manner in this embodiment, as shown in fig. 5, the fixing mechanism includes a steel nail 8 rotatably sleeved on the steel plate 1, an inner nail 11 is connected to the steel nail 8 through a screw thread, after the muscle is spread through the fixing mechanism, a doctor punches the femur through a special medical instrument, then drives the steel nail 8 into the femoral neck metaphysis through a through hole, and then rotates the inner nail 11 through a special tool, so that the inner nail 11 is slowly separated from the steel nail 8 and passes through the fracture line, the length of the fixing mechanism is increased, the practicability is increased, and the damaged epiphysis is fixedly connected, thereby realizing effective fixation of the fracture.
As an implementation manner in this embodiment, as shown in fig. 6, 7 and 8, the anti-slip mechanism includes a gasket 10 disposed on a steel plate 1, a groove 13 is formed on both the top and the bottom of the gasket 10, two rubber tubes 16 are fixedly connected to the groove 13, a connecting tube 17 is fixedly connected to the rubber tube 16, a gas collecting tube 19 is fixedly connected to one end of the connecting tube 17 away from the rubber tube 16, a rubber arc block 20 is fixedly connected to the gas collecting tube 19, a fixing groove is formed on the top of the rubber tube 16, a plurality of rubber columns 18 uniformly distributed are fixedly connected to the fixing groove, in the fixing process, the gasket 10 is first placed in the fixing groove, the steel nail 8 is brought into close contact with the gasket 10 by a special tool, the steel nail 8 is abutted against the top of the gasket 10, so as to compress the rubber tube 16, so that the gas in the rubber tube 16 enters the gas collecting tube 19 through the connecting tube 17, make the gas collecting pipe 19 inflation for rubber arc piece 20 and 8 butts of steel nail increase the frictional force at 8 and the packing ring 10 tops of steel nail, simultaneously under the effect of rubber column 18, further increase frictional force, and on the same principle, the bottom of packing ring 10 is provided with the mechanism the same with the top, thereby increases frictional force between packing ring 10 and the steel sheet 1, avoids children because the good movement leads to steel nail 8 to break away from.
As an implementation manner in this embodiment, as shown in fig. 3, 4 and 9, a position-limiting sleeve 5 is fixedly connected to an outer ring of the position-limiting column 4, two connecting rods 7 are rotatably connected to a side wall of the position-limiting sleeve 5, the other ends of the two connecting rods 7 are respectively connected to the first opening rod 2 and the second opening rod 21 in a sliding manner, and the connecting rods 7 slide on the first opening rod 2 and the second opening rod 21 by movement of the connecting rope, so as to assist the first opening rod 2 and the second opening rod 21 to open.
As an implementation manner in this embodiment, as shown in fig. 2, a limiting groove is provided on the steel plate 1, and a plurality of clamping blocks 12 are fixedly connected to an inner ring of the limiting groove, so as to be clamped with the clamping blocks 12 through clamping grooves, thereby connecting the limiting column 4 with the steel plate 1.
As an implementation manner in this embodiment, as shown in fig. 2, the outer ring of the limiting column 4 is provided with a plurality of clamping grooves, and the clamping grooves are matched with the clamping blocks 12 to complete clamping of the limiting column 4.
As an implementation manner in this embodiment, as shown in fig. 1, a cross-shaped groove or a straight groove is formed at the top of the rotation block 3, so that the rotation block 3 can be rotated by using a special tool such as a screwdriver.
As an implementation manner in this embodiment, as shown in fig. 2, a plurality of limiting grooves are formed in the steel plate 1, the gasket 10 is located in the limiting grooves, the gasket 10 abuts against the tops of the limiting grooves, and under the action of the rubber arc blocks 20 and the rubber columns 18, friction force between the gasket 10 and the steel plate 1 is increased, so that the steel nail 8 is prevented from being separated by a child due to movement.
As an embodiment in this embodiment, as shown in fig. 5, the outer rings of the steel nail 8 and the inner nail 11 are provided with threads, which are not shown.
According to the technical scheme provided by the invention, by arranging the opening mechanism, when the medical opening device is used, a doctor inserts the clamping groove of the limiting column into the clamping block so as to connect the limiting column with the steel plate, then rotates the rotating block reversely through a tool so as to enable the rotating rod to rotate, the rotating rod rotates so as to enable the connecting rope to be connected, the rotating rod is limited due to the fact that the rotating rod is in threaded connection with the limiting cylinder, the connecting rope moves under the action of the limiting spring so as to enable the first opening rod and the second opening rod to open, the connecting rod slides on the first opening rod and the second opening rod, the first opening rod and the second opening rod are assisted to open, the opened muscles are opened and limited, and an external medical opening device is assisted;
through the fixing mechanism, after the muscles are spread, a doctor punches the thighbone through a special medical appliance, then drives the steel nail into the femoral neck metaphysis through the through hole, then rotates the inner nail through a special tool, so that the inner nail is slowly separated from the steel nail and passes through the fracture line, the length of the fixing mechanism is increased, the practicability is increased, the damaged epiphysis is fixedly connected, and the fracture part is effectively fixed;
through anti-skidding mechanism, in fixed process, at first place the packing ring in the fixed slot, make steel nail and packing ring in close contact with through specialized tool, make the top butt of steel nail and packing ring, thereby compress the rubber tube, thereby make the gas in the rubber tube enter into the discharge through the connecting pipe, make the discharge inflation, make rubber arc piece and steel nail butt, increase the frictional force at steel nail and packing ring top, simultaneously under the effect of rubber column, further increase frictional force, and on the same order, the bottom of packing ring is provided with the mechanism the same with the top, thereby increase frictional force between packing ring and the steel sheet, avoid children to break away from because the mobilizable steel nail that leads to.
While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the invention as set forth in the appended claims.
Claims (9)
1. A child epiphyseal injury reduction fixation device, comprising: the device comprises a steel plate, a fixing mechanism, an anti-skidding mechanism and a spreading mechanism;
the opening mechanism comprises a limiting column, the limiting column is of a hollow structure, the inner wall of the bottom of the limiting column is rotatably connected with a rotating rod, the top of the rotating rod is fixedly connected with a rotating block, the outer ring of the rotating rod is connected with a limiting cylinder through threads, the outer ring of the limiting cylinder is fixedly connected with the inner ring of the limiting column, the outer ring of the rotating rod is provided with a connecting rope, the other end of the connecting rope is fixedly connected with a fixing ring, the inner ring of the fixing ring is rotatably sleeved with a fixing shaft, the fixing shaft is rotatably sleeved with a first opening rod and a second opening rod, and the first opening rod and the second opening rod are fixedly connected with limiting springs;
the fixing mechanism is used for adapting to fracture lines with different depths;
the anti-skid mechanism is used for preventing the steel nail from separating from the steel plate.
2. The child epiphyseal injury reduction fixation device of claim 1, wherein the fixation mechanism comprises a steel nail rotatably sleeved on a steel plate, the steel nail having an inner nail threadedly connected therein.
3. The children's epiphyseal plate injury reduction fixing device according to claim 2, wherein the anti-slip mechanism comprises a washer disposed on a steel plate, a groove is formed on the top and the bottom of the washer, two rubber tubes are fixedly connected to the groove, a connecting tube is fixedly connected to the rubber tubes, a gas collecting tube is fixedly connected to one end of the connecting tube away from the rubber tubes, a rubber arc block is fixedly connected to the gas collecting tube, a fixing groove is formed on the top of the rubber tubes, and a plurality of rubber columns which are uniformly distributed are fixedly connected to the fixing groove.
4. The child epiphyseal injury reduction fixation device of claim 1, wherein a stop collar is fixedly connected to the outer ring of the stop post, two connecting rods are rotatably connected to the side wall of the stop collar, and the other ends of the two connecting rods are slidably connected to the first and second spreader rods, respectively.
5. The epiphyseal injury reduction fixation device of claim 1, wherein the steel plate defines a limiting groove, and a plurality of blocks are fixedly connected to an inner ring of the limiting groove.
6. The epiphyseal injury reduction fixation device of claim 1, wherein the outer ring of the position-limiting post defines a plurality of slots.
7. The child epiphyseal injury reduction fixation device of claim 1, wherein the top of the rotation block is slotted with a cross slot or a straight slot.
8. The epiphyseal injury reduction fixation device of claim 3, wherein the steel plate defines a plurality of retaining grooves, and the washer is disposed in the retaining grooves.
9. The child epiphyseal injury reduction fixation device of claim 2, wherein the outer rings of the steel and inner pins are each provided with threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210177987.9A CN114533235B (en) | 2022-02-24 | 2022-02-24 | Children epiphyseal plate damage fixing device that resets |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210177987.9A CN114533235B (en) | 2022-02-24 | 2022-02-24 | Children epiphyseal plate damage fixing device that resets |
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| CN114533235A true CN114533235A (en) | 2022-05-27 |
| CN114533235B CN114533235B (en) | 2022-12-02 |
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| CN211433245U (en) * | 2019-09-30 | 2020-09-08 | 刘峰 | Patella locking steel plate |
| CN110974381A (en) * | 2019-12-16 | 2020-04-10 | 何舟 | Reduce steel sheet screw internal fixation art equipment of wound area |
| CN213249632U (en) * | 2020-04-30 | 2021-05-25 | 天津市第一中心医院 | Minimally invasive percutaneous screw taking-out spreader |
| CN213156368U (en) * | 2020-06-22 | 2021-05-11 | 河北医科大学第三医院 | Combined screw capable of improving fixing effect of femoral neck fracture of child |
| CN215739158U (en) * | 2021-05-28 | 2022-02-08 | 常州市金坛区人民医院 | Be used for department of general surgery to dissect distraction device |
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| CN114533235B (en) | 2022-12-02 |
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