CN114041864B - Fracture internal fixation device with locking and fastening structure - Google Patents
Fracture internal fixation device with locking and fastening structure Download PDFInfo
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- CN114041864B CN114041864B CN202111381307.7A CN202111381307A CN114041864B CN 114041864 B CN114041864 B CN 114041864B CN 202111381307 A CN202111381307 A CN 202111381307A CN 114041864 B CN114041864 B CN 114041864B
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- titanium plate
- detachable head
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- clamping
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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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
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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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/808—Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/846—Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface
Abstract
The invention relates to the technical field of medical instruments, in particular to a fracture internal fixation device with a locking and fastening structure, which comprises a titanium plate, wherein a fixing hole is formed in the titanium plate, limiting holes are formed in the upper side and the lower side of the fixing hole, and a connecting clamping groove is formed in the bottom of the right side of the titanium plate; go into the bone nail, it wears to establish the inside of fixed orifices, the one end of going into the bone nail is connected with can tearing the head, and the other end of going into the bone nail is connected with the spiral part, it is equipped with the connecting rod with the junction that can tear the head to go into the bone nail, and the inside of removable head is equipped with the grip block, the right side of grip block is connected with the protective cover. According to the invention, the detachable head is made of metal, so that after a patient removes a titanium plate, the absorbable bone screw does not need to be pulled out, and the connecting rod and the detachable head on the bone screw can be separated from each other only by moving the outer sleeve column and the inner sleeve column outwards through the clamping plate in the detachable head, so that the quick detachment of the detachable head is completed, and the operation efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a fracture internal fixation device with a locking and fastening structure.
Background
Fracture refers to the continuous complete or partial breakdown of bone structure. It is common to children and the elderly, and also occurs in young and middle-aged people. Patients often have one fracture site and a few multiple fractures. After timely and proper treatment, most patients can recover the original functions, and a few patients can leave sequelae with different degrees. The internal fixation of fracture is a method for treating fracture patients in clinical orthopedics department, can support bones, and can maintain the firmness of reduction in vivo by using devices such as steel plates, steel needles and the like after the reduction of the fracture, thereby further assisting the smooth growth of the bones.
When the existing internal fracture fixing device is used at a special position, the internal fracture fixing device needs to be dismantled after skeleton restoration, otherwise, the normal movement of a human body is influenced, or the normal development and growth of the skeleton are influenced, the internal fracture fixing device usually uses a steel needle to fix a steel plate to the skeleton, the steel needle cannot be absorbed by the human body, the internal fracture fixing device needs to be taken out one by one, the internal fracture fixing device is difficult to take out, and even can cause secondary injury to a patient, and therefore the internal fracture fixing device with the locking and fastening structure is provided.
Disclosure of Invention
The invention aims to provide a fracture internal fixation device with a locking and fastening structure, which solves the problems that when the fracture internal fixation device is used at a special part, the fracture internal fixation device needs to be disassembled after the skeleton is restored, otherwise the normal movement of the human body or the normal development and growth of the skeleton are influenced, the fracture internal fixation device usually uses steel needles to fix the steel plate on the skeleton, the steel needles cannot be absorbed by the human body and need to be taken out one by one, and the fracture internal fixation device is difficult to take out and even causes secondary injury to a patient.
In order to achieve the purpose, the invention provides the following technical scheme: an internal fracture fixation device provided with a locking fastening structure, comprising:
the device comprises a titanium plate, a fixing hole is formed in the titanium plate, limiting holes are formed in the upper side and the lower side of the fixing hole, and a connecting clamping groove is formed in the bottom of the right side of the titanium plate;
the bone screw penetrates through the fixing hole, one end of the bone screw is connected with a detachable head, the other end of the bone screw is connected with a spiral part, a connecting rod is arranged at the joint of the bone screw and the detachable head, a clamping plate is arranged inside the detachable head, and a protective cover is connected to the right side of the clamping plate;
the outer sleeve column is fixed on the inner side of the clamping plate, the inner sleeve column is arranged below the outer sleeve column, a groove is formed in the surface of the clamping plate, an elastic rubber ring is arranged inside the groove, a limiting groove is formed in the joint of the detachable head and the clamping plate, and a silica gel ring is installed at the joint of the connecting rod and the detachable head.
Preferably, the titanium plate is further provided with:
the inner groove is formed in the left side of the titanium plate, a detection rod is arranged inside the inner groove, and the middle of the detection rod is connected with a pressure sensor.
Preferably, the titanium plate is further provided with:
the locating plate, it is installed one side of titanium plate, spacing tip is worn to be equipped with in the inside of locating plate, and the one end of spacing tip is fixed with spacing needle, spacing needle runs through in the inside in spacing hole.
Preferably, the locating plate still is equipped with:
the transmission rod is arranged at the lower side inside the positioning plate, a knob is fixed at the right side of the transmission rod, and the transmission rod penetrates through the inside of the positioning plate;
the driving gear is connected to the output end of the transmission rod, the left side of the driving gear is connected with a driven gear, the middle of the driven gear is provided with a connecting shaft, and the tail end of the connecting shaft is connected with a clamping rod.
Preferably, the clamping rod is clamped with the titanium plate through the connecting clamping groove, the clamping rod rotates on the driven gear through the connecting shaft, the driven gear is meshed with the driving gear, and the driving gear is connected with the knob key through the transmission rod.
Preferably, the fixing hole is of a T-shaped structure, the size of the fixing hole is matched with that of the detachable head and the bone screw, and the depth of the fixing hole is larger than the thickness of the detachable head.
Preferably, through elastic rubber circle elastic connection between the grip block, and recess and elastic rubber circle constitute and partly encircle the structure to the grip block passes through the spacing groove and realizes sliding movement on removable head.
Preferably, the inner sleeve column is movably connected with the outer sleeve column, the inner sleeve column is perpendicular to the clamping plate, the outer sleeve column clamping plate is perpendicular to the clamping plate, and a through hole matched with the inner sleeve column and the outer sleeve column in size is formed in the connecting rod.
Preferably, the connecting rod runs through the inside of silica gel circle, and silica gel circle and removable head adhesive bonding are connected.
Preferably, the positioning plate is provided with a through hole matched with the fixing hole, the bottom of the titanium plate is of an arc structure, and the positioning plate is matched with the titanium plate in overall dimension.
Compared with the prior art, the invention provides a fracture internal fixation device with a locking and fastening structure, which has the following beneficial effects:
1. the titanium plate is used as the main body of the internal fixing device, a supporting effect is provided after the fracture of a patient, the bone-in nail matched with the titanium plate is made of an absorbable material, the bone-in nail can fix the titanium plate and the skeleton, all the metal bone-in nails are prevented from being removed when the titanium plate is removed, and the problem that the secondary injury can be caused to the patient when the titanium plate is removed is solved;
2. according to the invention, the detachable head is made of metal, after a patient removes a titanium plate, the absorbable bone screw does not need to be pulled out, and the connecting rod and the detachable head on the bone screw can be separated from each other only by moving the outer sleeve column and the inner sleeve column outwards through the clamping plate in the detachable head, so that the quick detachment of the detachable head is completed, and the operation efficiency is greatly improved;
3. the tension on the detection rods on the two sides of the pressure sensor can be detected through the pressure sensor arranged on the detection rod, after a patient performs an operation, the pressure sensor is attached to the skeleton of the patient, a hospital can set corresponding mobile phone software to receive the detection result of the pressure sensor, the development conditions of the skeleton are different in a certain time due to different growth levels of the patient, the bone-entering nail can be driven to be torn up and down in the process of the bone growth, the movement condition of the bone-entering nail can be monitored by detecting the tension on the detection rod connected with the bone-entering nail, the patient is reminded to go to the hospital for rechecking regularly, and a doctor can also quickly judge whether to dismantle a titanium plate according to different data;
4. according to the invention, the positioning plate can be used for quickly positioning and supporting the titanium plate in the process of connecting the titanium plate and the skeleton, the titanium plate and the positioning plate are quickly connected by mutually clamping the connecting clamping groove and the clamping rod, the knob is screwed to drive the transmission rod to rotate, so that the driven gear is driven to rotate by the driving gear, the connecting clamping groove is unlocked, and the effect of quickly separating the titanium plate and the positioning plate is realized.
Drawings
FIG. 1 is a schematic view of the overall structure of a titanium plate according to the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic view of the bone screw of the present invention;
FIG. 4 is a side view of the bone screw of the present invention;
FIG. 5 is an enlarged view of the portion A in FIG. 2;
FIG. 6 is an enlarged view of the structure at B in FIG. 3 according to the present invention.
In the figure: 1. a titanium plate; 2. a fixing hole; 3. a limiting hole; 4. a connecting clamping groove; 5. a limit needle; 6. inserting bone nails; 7. a spiral portion; 8. limiting the end part; 9. positioning a plate; 10. a knob; 11. a transmission rod; 12. a connecting rod; 13. the head can be disassembled; 14. a clamping plate; 15. a protective cover; 16. sleeving a column outside; 17. an elastic rubber ring; 18. a groove; 19. an inner casing column; 20. a silica gel ring; 21. a limiting groove; 22. a driven gear; 23. a driving gear; 24. a clamping rod; 25. a connecting shaft; 26. a pressure sensor; 27. a detection lever; 28. an inner tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1 and 2, an internal fracture fixation device provided with a locking fastening structure includes: titanium plate 1, fixed orifices 2 have been seted up to titanium plate 1's inside, and the upper and lower both sides of fixed orifices 2 all are equipped with spacing hole 3, connecting slot 4 has been seted up to titanium plate 1's right side bottom, inside groove 28, it sets up in titanium plate 1's left side, and the inside of inside groove 28 is equipped with measuring staff 27, measuring staff 27's middle part is connected with pressure sensor 26, pressure sensor 26 on the measuring staff 27 through setting up can detect the pulling force on the measuring staff 27 of pressure sensor 26 both sides, the patient is carrying out the operation, pressure sensor 26 laminates with patient's skeleton each other, the hospital can set up corresponding cell-phone software, receive pressure sensor 26's testing result, because patient's growth level is different, the skeleton development condition is also diverse in the definite time, can drive go into bone nail 6 and tear from top to bottom at the in-process that the skeleton grows, through detecting the pulling force on the measuring staff 27 with going into bone nail 6 is connected, thereby can monitor the removal condition of going into bone nail 6, the patient regularly goes to go to reexamination, the doctor also can carry out quick judgement to dismantling titanium plate 1 according to the difference of data.
As shown in fig. 3 to 5, an internal fracture fixation device provided with a locking fastening structure, comprising: the bone-entering nail 6 penetrates through the fixing hole 2, one end of the bone-entering nail 6 is connected with a detachable head 13, the other end of the bone-entering nail 6 is connected with a spiral part 7, the arranged titanium plate 1 serves as a main body of an internal fixing device and provides a supporting effect after a patient fractures, the bone-entering nail 6 matched with the titanium plate 1 is made of an absorbable material, the bone-entering nail 6 can fix the titanium plate 1 and bones, the situation that the titanium plate 1 needs to be detached from all the bone-entering nails 6 made of metal materials when detached is avoided, the problem that secondary injury can be caused to the patient when the titanium plate 1 is detached is solved, a connecting rod 12 is arranged at the connecting position of the bone-entering nail 6 and the detachable head 13, a clamping plate 14 is arranged inside the detachable head 13, the connecting rod 12 penetrates through the inside of a silica gel ring 20, the silica gel ring 20 is connected with the detachable head 13 in an adhesive mode, the right side of the clamping plate 14 is connected with a protective cover 15, the fixing hole 2 is of a T-shaped structure, the fixing hole 2 is matched with the size of the detachable head 13 and the size of the bone-entering nail 6, and the depth of the fixing hole 2 is larger than the thickness of the detachable head 13; the outer sleeve column 16 is fixed on the inner side of the clamping plate 14, an inner sleeve column 19 is arranged below the outer sleeve column 16, the inner sleeve column 19 is movably connected with the outer sleeve column 16, the inner sleeve column 19 is perpendicular to the clamping plate 14, the outer sleeve column 16 is perpendicular to the clamping plate 14, through holes matched with the inner sleeve column 19 and the outer sleeve column 16 in size are formed in the connecting rod 12, a groove 18 is formed in the surface of the clamping plate 14, an elastic rubber ring 17 is arranged in the groove 18, a limiting groove 21 is formed in the joint of the detachable head 13 and the clamping plate 14, a silica gel ring 20 is installed at the joint of the connecting rod 12 and the detachable head 13, the clamping plate 14 is elastically connected with the elastic rubber ring 17, the groove 18 and the elastic rubber ring 17 form a semi-surrounding structure, the clamping plate 14 can slide on the detachable head 13 through the limiting groove 21, the detachable head 13 is made of metal, after the titanium plate 1 is detached by the detachable head, the detachable head 13 does not need to be pulled out of the bone screw 6, the bone screw can be detached quickly after the detachable head 13 is detached from the titanium plate 1 by the detachable head, and the detachable head 13 can be detached quickly.
As shown in fig. 2 and 5, an internal fracture fixation device provided with a locking fastening structure includes: the positioning plate 9 is installed on one side of the titanium plate 1, a through hole matched with the fixing hole 2 is formed in the positioning plate 9, the bottom of the titanium plate 1 is of an arc-shaped structure, the positioning plate 9 is matched with the shape and size of the titanium plate 1, a limiting end portion 8 penetrates through the positioning plate 9, a limiting needle 5 is fixed at one end of the limiting end portion 8, the limiting needle 5 penetrates through the limiting hole 3, a transmission rod 11 is installed on the lower side of the inside of the positioning plate 9, a knob 10 is fixed on the right side of the transmission rod 11, and the transmission rod 11 penetrates through the inside of the positioning plate 9; driving gear 23, its output at transfer line 11 is connected, the left side of driving gear 23 is connected with driven gear 22, and driven gear 22's mid-mounting has connecting axle 25, the end-to-end connection of connecting axle 25 has kelly 24, kelly 24 is through connecting draw-in groove 4 and the mutual block of titanium board 1, and kelly 24 passes through connecting axle 25 and realizes rotating on driven gear 22, and driven gear 22 and driving gear 23 intermeshing, driving gear 23 is connected with knob 10 key-type through transfer line 11 simultaneously, locating plate 9 through the setting can carry out quick location at titanium board 1 and skeleton connection in-process, and support titanium board 1, and carry out the high-speed joint through connecting draw-in groove 4 and kelly 24 mutual block between titanium board 1 and the locating plate 9, twist knob 10 and can drive transfer line 11 and rotate, thereby drive driven gear 22 through driving gear 23 and rotate, unblock connection draw-in groove 4, realize titanium board 1 and locating plate 9 rapid separation's effect.
The working principle is as follows: when the internal fracture fixing device with the locking and fastening structure is used, firstly, a titanium plate 1 is inserted into the positioning plate 9, the knob 10 is screwed, the knob 10 drives the transmission rod 11 to rotate, meanwhile, the driving gear 23 rotates, the driven gear 22 meshed with the driving gear 23 rotates, the driven gear 22 drives the connecting shaft 25 to rotate, so that the clamping rod 24 rotates, the clamping rod 24 is clamped into the connecting clamping groove 4, and the titanium plate 1 is fixed; secondly, cutting the skin of the fracture of the patient, opening the fracture, fitting the mounted titanium plate 1 with the bone of the patient, determining the position of the titanium plate 1 by moving the positioning plate 9, and after determining the position, penetrating the limiting needle 5 into the limiting hole 3 through the positioning plate 9 to position the titanium plate 1; secondly, drilling by using a tool, measuring the drilling depth by using a measuring tool, sequentially screwing the spiral parts 7 of the bone-in nails 6 into the bone to achieve a locking effect, so that the situation that the supporting effect of the titanium plate 1 is reduced due to the fact that the titanium plate 1 is not tightly attached to the bone is avoided, screwing the protective cover 15, closing the detachable head 13, and avoiding tissue pollution to the detachable head 13; then, after the operation of the patient is completed, the detection data of the pressure sensor 26 can be received through mobile phone software, the received data can be uploaded through 5G data, a follow-up doctor can unify the received information, and whether the titanium plate 1 is detached or not can be quickly judged according to different data; finally, when the titanium plate 1 needs to be dismantled, the protective cover 15 is screwed, the clamping plate 14 inside the titanium plate is exposed, a tool is used for outwards propping the clamping plate 14, at the moment, the clamping plate 14 drives the outer sleeve column 16 and the inner sleeve column 19 to move in opposite directions, so that the outer sleeve column 16 and the inner sleeve column 19 are separated from each other and are separated from the through hole in the connecting rod 12, the bone entering nail 6 and the detachable head 13 are quickly dismantled, and the bone entering nail 6 can still be kept in the body of a patient and absorbed by the human body.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A fracture internal fixation device with a locking and fastening structure, comprising:
the device comprises a titanium plate (1), wherein a fixing hole (2) is formed in the titanium plate (1), limiting holes (3) are formed in the upper side and the lower side of the fixing hole (2), and a connecting clamping groove (4) is formed in the bottom of the right side of the titanium plate (1);
the bone entering nail (6) penetrates through the fixing hole (2), one end of the bone entering nail (6) is connected with a detachable head (13), the other end of the bone entering nail (6) is connected with a spiral part (7), a connecting rod (12) is arranged at the joint of the bone entering nail (6) and the detachable head (13), a clamping plate (14) is arranged inside the detachable head (13), and a protective cover (15) is connected to the right side of the clamping plate (14);
the outer sleeve column (16) is fixed on the inner side of the clamping plate (14), an inner sleeve column (19) is arranged below the outer sleeve column (16), a groove (18) is formed in the surface of the clamping plate (14), an elastic rubber ring (17) is arranged inside the groove (18), a limiting groove (21) is formed in the joint of the detachable head (13) and the clamping plate (14), and a silica gel ring (20) is installed at the joint of the connecting rod (12) and the detachable head (13);
interior cover post (19) and outer cover post (16) swing joint, and endotheca post (19) and grip block (14) mutually perpendicular to outer cover post (16) grip block (14) mutually perpendicular, the inside of connecting rod (12) is equipped with the through-hole with the size phase-match of endotheca post (19) and outer cover post (16).
2. The internal fracture fixation device provided with a locking and fastening structure according to claim 1, wherein the titanium plate (1) is further provided with:
and an inner groove (28) which is arranged on the left side of the titanium plate (1), wherein a detection rod (27) is arranged inside the inner groove (28), and the middle part of the detection rod (27) is connected with a pressure sensor (26).
3. The internal fixation device for fractures provided with locking and fastening structure, according to claim 1, characterized in that said titanium plate (1) is further provided with:
the positioning plate (9) is installed on one side of the titanium plate (1), a limiting end portion (8) penetrates through the positioning plate (9), a limiting needle (5) is fixed to one end of the limiting end portion (8), and the limiting needle (5) penetrates through the inside of the limiting hole (3).
4. The internal fixation device for fracture with locking and fastening structure according to claim 3, characterized in that the positioning plate (9) is further provided with:
the transmission rod (11) is arranged at the lower side inside the positioning plate (9), a knob (10) is fixed at the right side of the transmission rod (11), and the transmission rod (11) penetrates through the inside of the positioning plate (9);
the driving gear (23) is connected to the output end of the transmission rod (11), the left side of the driving gear (23) is connected with a driven gear (22), the middle of the driven gear (22) is provided with a connecting shaft (25), and the tail end of the connecting shaft (25) is connected with a clamping rod (24).
5. The internal fracture fixation device with the locking and fastening structure is characterized in that the clamping rod (24) is clamped with the titanium plate (1) through the connecting clamping groove (4), the clamping rod (24) rotates on the driven gear (22) through the connecting shaft (25), the driven gear (22) is meshed with the driving gear (23), and the driving gear (23) is connected with the knob (10) through the transmission rod (11).
6. The internal fixation device for fracture with locking and fastening structure according to claim 1 is characterized in that the fixing hole (2) is T-shaped, the fixing hole (2) matches with the size of the detachable head (13) and the bone screw (6), and the depth of the fixing hole (2) is larger than the thickness of the detachable head (13).
7. The internal fixation device for fracture with locking and fastening structure as claimed in claim 1, wherein the clamping plates (14) are elastically connected with each other through an elastic rubber ring (17), the groove (18) and the elastic rubber ring (17) form a semi-enclosed structure, and the clamping plates (14) realize sliding movement on the detachable head (13) through a limiting groove (21).
8. The internal fracture fixation device provided with the locking and fastening structure is characterized in that the connecting rod (12) penetrates through the inside of the silicone ring (20), and the silicone ring (20) is connected with the detachable head (13) in an adhesion manner.
9. The internal fracture fixation device with the locking and fastening structure is characterized in that the positioning plate (9) is provided with a through hole matched with the fixing hole (2), the bottom of the titanium plate (1) is of an arc-shaped structure, and the positioning plate (9) is matched with the titanium plate (1) in external dimension.
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| CN202111381307.7A CN114041864B (en) | 2021-11-20 | 2021-11-20 | Fracture internal fixation device with locking and fastening structure |
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| CN202111381307.7A CN114041864B (en) | 2021-11-20 | 2021-11-20 | Fracture internal fixation device with locking and fastening structure |
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| CN114041864B true CN114041864B (en) | 2023-01-20 |
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| CN109330674A (en) * | 2018-09-07 | 2019-02-15 | 西安卓恰医疗器械有限公司 | A kind of internal fixation system and its usage mode |
| CN213249621U (en) * | 2020-03-10 | 2021-05-25 | 昶盛(物料应用制品)有限公司 | Screw assembly for bone fixation and bone fixation device |
| CN111227920A (en) * | 2020-03-12 | 2020-06-05 | 王平山 | Internal fixation device for fracture |
| CN213850988U (en) * | 2020-07-21 | 2021-08-03 | 贾军 | Intelligent bone fracture plate and strain detection system for fracture |
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| CN114041864A (en) | 2022-02-15 |
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