CN110801273B - Bone repair fixing assembly capable of pre-tightening and stopping - Google Patents
Bone repair fixing assembly capable of pre-tightening and stopping Download PDFInfo
- Publication number
- CN110801273B CN110801273B CN201911233392.5A CN201911233392A CN110801273B CN 110801273 B CN110801273 B CN 110801273B CN 201911233392 A CN201911233392 A CN 201911233392A CN 110801273 B CN110801273 B CN 110801273B
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- bone plate
- bone
- screw
- backstop
- plate screw
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 155
- 239000000463 material Substances 0.000 claims abstract description 6
- 208000010392 Bone Fractures Diseases 0.000 claims description 27
- 230000005489 elastic deformation Effects 0.000 claims description 5
- 206010017076 Fracture Diseases 0.000 description 12
- 230000035876 healing Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 229920002463 poly(p-dioxanone) polymer Polymers 0.000 description 4
- 239000000622 polydioxanone Substances 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 4
- 238000009966 trimming Methods 0.000 description 3
- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 231100000915 pathological change Toxicity 0.000 description 2
- 230000036285 pathological change Effects 0.000 description 2
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 2
- 229920001432 poly(L-lactide) Polymers 0.000 description 2
- 229920000747 poly(lactic acid) Polymers 0.000 description 2
- 239000004626 polylactic acid Substances 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920000954 Polyglycolide Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000004633 polyglycolic acid Substances 0.000 description 1
- 238000011084 recovery Methods 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
- 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 or setting implements
- 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
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/866—Material or manufacture
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00004—(bio)absorbable, (bio)resorbable or resorptive
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (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 utility model provides a but bone repair fixed subassembly of pretension backstop, includes bone plate and bone plate screw, bone plate and bone plate screw are made by absorbable material, be equipped with the backstop strip on the screw head supporting surface of bone plate screw, be equipped with a plurality of through-hole on the bone plate, the backstop tooth of a plurality of along bone plate screw screwing direction perk has been arranged all around to through-hole one end, the backstop tooth cooperatees with the backstop strip, restriction bone plate screw counter-rotation. The invention can effectively fix the fracture part of the patient, and is not easy to loose.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a bone repair fixing component capable of pre-tightening and stopping.
Background
In bone surgery, it is generally necessary to fix a fracture site of a patient by using a bone plate, the bone plate is fixedly connected to the fracture site of the patient by means of bone plate screws, and the existing bone plate screws are easily loosened due to the influence of muscle and tissue movements after being fixed, so that the bone plate is unstable in connection with the bone of the patient, and the healing of the fracture site of the patient is affected.
In addition, in the prior art, in order to avoid the need for a subsequent secondary operation to remove the bone plate and the bone plate screw, both the bone plate and the bone plate screw are made of absorbable materials, and in order to ensure effective healing of the fracture site of the patient, it is generally required that the bone plate ensure 80% of the fixation strength within 6 months after installation. After the existing bone plate screw is implanted into a patient, external threads on a screw rod of the existing bone plate screw are easily degraded and absorbed to lose efficacy, so that the bone plate screw is separated from the bone of the patient, and the bone plate cannot meet the fixing requirement. In addition, the screw head of the existing bone plate screw is provided with a straight-line groove, a cross-shaped groove or a regular hexagonal prism cavity groove which is used for installing and screwing, the screw head is arranged close to the bone of a patient, the working contact surface of the screw head and an installation tool is low, the operable space of the installation tool is small, and in the orthopedic operation, the installation tool is easy to accidentally injure muscle tissues and skin around the damaged bone of the patient, so that certain pain is caused to the patient.
Disclosure of Invention
The invention aims at: aiming at the problems, the bone repair fixing component capable of pre-tightening and stopping is provided, the fracture part of a patient can be effectively fixed, looseness is not easy to exist, and the healing of the fracture part of the patient can be effectively ensured.
The technical scheme adopted by the invention is as follows:
The utility model provides a but bone repair fixed subassembly of pretension backstop, includes bone fracture plate and bone plate screw, be equipped with a plurality of through-hole on the bone fracture plate, bone plate screw wears to establish inside the through-hole, bone fracture plate and bone plate screw are made by absorbable material, be equipped with the backstop strip on the screw head supporting surface of bone plate screw, a plurality of backstop tooth of perk along bone plate screw screwing direction has been arranged all around to through-hole one end, the backstop tooth cooperatees with the backstop strip, restriction bone plate screw counter-rotation.
In the structure, the bone plate screw penetrates through the through hole on the bone plate and is screwed into the bone body of the patient, the bone plate is fixedly arranged at the crack of the bone body of the patient, the retaining strip on the bone plate screw is matched with the retaining tooth on the bone plate, the bone plate screw is limited to be screwed out of the bone body of the patient, the loosening of the bone plate screw can be avoided, the fixing effect of the fixing component is ensured, the effectiveness and the stability of the fixing component are improved, the secondary implantation of the fixing component is avoided, the medical burden of the patient is lightened, and the rehabilitation of the fracture part of the patient is ensured. Meanwhile, the retaining mode in the structure is different from the existing retaining design in that retaining strips are required to be embedded into the bone body, and the surface of the bone body is not damaged during retaining. The bone plate and bone plate screw are made of existing absorbable materials such as PDO (polydioxanone), PGA (polyglycolic acid), PLLA (levorotatory polylactic acid), and hydroxyapatite.
Further, the screw head supporting surface of the bone plate screw is a conical surface, and a plurality of backstop strips are circumferentially arranged on the screw head supporting surface; one end of the through hole is provided with a counter bore, and a plurality of backstop teeth tilting along the screwing direction of the bone plate screw are circumferentially arranged in the counter bore.
Due to the adoption of the structure, the screw heads of the bone plate screws can be arranged in the counter bores, the height of the screw heads exposed out of the surface of the bone plate is reduced, and the situation that the screw heads protrude out of the surface of the bone plate too high to affect tissues around the fracture part of a patient is avoided.
Further, a plurality of elastic support legs are circumferentially arranged at the other end of the through hole, and the elastic support legs enable the bone fracture plate to be elastically deformed in the direction of the central line of the through hole.
In the structure, the elastic support legs are arranged, so that the retaining strips on the bone plate screws can be conveniently clamped into retaining tooth holes between retaining teeth on the bone plate, the damage caused by rigid contact between the retaining strips and the retaining teeth is avoided, the contact area between the bone plate and the surface of a bone body of a patient can be effectively reduced, and the bone healing of the patient is facilitated.
Further, the bone plate and the bone plate screw satisfy the following conditions: a > B > P/N, wherein P is the screw lead of the bone plate, A is the elastic deformation height of the elastic supporting leg, B is the down-pressure height of the strip, P is the external thread lead of the bone plate screw, and N is the number of teeth.
In the structure, the requirement A > B is met between the bone plate and the bone plate screw, so that the retaining strip is not easy to unscrew after being clamped into the retaining tooth holes between the retaining teeth on the bone plate; the requirement of B > P/N is met between the bone plate and the bone plate screw, so that the retaining strip slightly moves in the retaining tooth hole, but the retaining tooth cannot be removed. The depressing height of the retaining strip is as follows: the retaining strip descends from the contact retaining teeth to the retaining teeth pockets between the retaining teeth.
Further, the lower section of the screw rod of the bone plate screw is provided with external threads, and a plurality of barb parts are arranged on the circumferential surface of the upper section of the screw rod.
Due to the adoption of the structure, when the external threads and the barb portions on the surface of the screw rod are absorbed by the bone body of the patient, and the external threads on the screw rod fail, the barb portions can effectively limit the bone plate screw to separate from the bone body of the patient, so that stable connection between the bone plate and the bone body of the patient is ensured, the bone plate can meet the requirement of keeping 80% of fixing strength within 6 months after installation, and the effective healing of the fracture part of the patient is ensured.
Further, the barb portion is of a conical structure, and an included angle between the center line of the barb portion and the axis line of the screw rod is 30-60 degrees.
Further, the upper part of the screw head is fixedly connected with a screwing part, and the screwing part is of a prismatic structure.
The screw head has the advantages that the screwing part on the upper part of the screw head is of the prismatic structure, and is different from the structure that the head of the existing bone plate screw is in a cross shape, a straight line shape and the like, so that the problem of slip failure during installation of the bone plate screw can be avoided, the screw of the bone plate screw is convenient, meanwhile, the screwing part protrudes out of the surface of the screw head, the working contact surface between the screw head and an installation tool is raised, the operable space of the installation tool can be enlarged, and the bone surgery is convenient to carry out.
Further, the screwing part is in threaded connection with the screw head, and the screwing direction of the screwing part is the same as the screwing direction of the bone plate screw.
Due to the adoption of the structure, after the bone plate screw is screwed, the retaining strip on the bone plate screw is matched with the retaining teeth on the bone plate, so that the bone plate screw is limited to reversely rotate, the screwing part can reversely rotate, the screw head of the bone plate screw is separated, and the subsequent trimming of the surface of the screw head for ensuring the surface flatness of the screw head is avoided.
Further, the lower section circumference of screwing is equipped with the taper groove of twisting off, the inside circumference of taper groove of twisting off is arranged a plurality of bar recess, the axial direction setting of portion is screwed off to the bar recess.
In the structure, the screwing lower section is provided with the twisting-off cone groove, after the bone plate screw is screwed up, torque can be continuously applied to the screwing-off part, so that the screwing-off part is broken along the groove bottom of the twisting-off cone groove, the broken section between the screwing-off part and the screw head is smooth, pathological changes of tissues around a bone body of a patient caused by sharp points on the surface of the screw head are avoided, and effective healing of fracture parts of the patient is ensured. The strip-shaped grooves are arranged, so that the twisting-off of the screwing part can be easier.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. In the invention, the retaining strip on the bone plate screw is matched with the retaining teeth on the bone plate to limit the reverse rotation of the bone plate screw, so that the bone plate screw can be prevented from loosening, the secondary implantation of a fixing assembly is avoided, the recovery of the fracture part of a patient is ensured, and the surface of a bone body is not damaged during retaining;
2. In the invention, the elastic support legs are circumferentially arranged at the other end of the through hole, so that the bone fracture plate has elastic deformation in the direction of the central line of the through hole, a retaining strip on a bone fracture plate screw can be conveniently clamped into a retaining tooth hole between retaining teeth on the bone fracture plate, the damage caused by rigid contact between the retaining strip and the retaining teeth is avoided, meanwhile, the contact area between the bone fracture plate and the bone surface of a patient can be effectively reduced, and the bone fracture plate is more beneficial to the bone fracture healing of the patient;
3. In the invention, the upper section circumferential surface of the bone plate screw is provided with a plurality of barb parts, when the external thread on the screw rod fails, the barb parts can effectively limit the bone plate screw from falling off, prolong the effectiveness of the fixation effect of the bone plate screw and increase the fixation strength of the bone plate;
4. in the invention, the screw head of the bone plate screw is fixedly provided with the screwing part, the screwing part is in threaded connection with the screw head, the screwing direction of the screwing part is the same as that of the bone plate screw, the screwing part is convenient to separate from the screw head, and the subsequent trimming of the surface of the screw head for ensuring the surface flatness of the screw head is avoided;
5. According to the invention, the self-breaking screwing part is fixedly arranged on the screw head of the bone plate screw, so that the screwing part can be conveniently separated from the screw head, the section between the screwing part and the screw head is smooth, the subsequent trimming of the surface of the screw head for ensuring the surface smoothness of the screw head is avoided, the pathological changes of tissues around a bone body of a patient caused by the sharp points on the surface of the screw head are avoided, and the effective healing of the fracture part of the patient is ensured.
Drawings
FIG. 1 is a schematic structural view of a bone repair fixation assembly;
FIG. 2 is a schematic cross-sectional view of a bone repair fixation assembly;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2;
FIG. 4 is a schematic view of the bone plate;
FIG. 5 is a schematic view of the bottom structure of FIG. 4;
FIG. 6 is a schematic elevational view of the structure of FIG. 4;
FIG. 7 is a schematic view of the structure of a bone plate screw;
the marks in the figure: 1-bone fracture plate, 11-through hole, 12-retaining teeth, 13-elastic support leg, 2-bone plate screw, 21-screw head, 211-retaining strip, 22-screw rod, 221-barb portion, 222-external thread, 23-screwing portion, 231-twist-off cone groove, 232-bar groove, 3-patient bone body, elastic deformation height of A-elastic support leg, depression height of B-retaining strip, P-bone plate screw external thread lead, N-retaining teeth number.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The bone repair fixing assembly capable of pre-tightening and stopping comprises a bone plate 1 and a bone plate screw 2, wherein a plurality of through holes 11 are formed in the bone plate 1, the bone plate screw 2 is arranged inside the through holes 11 in a penetrating mode, and the bone plate 1 and the bone plate screw 2 are made of existing absorbable materials, such as PDO (polydioxanone), PGA (polyethylene glycol acid), PLLA (L-polylactic acid), hydroxyapatite and the like. As shown in fig. 7, the supporting surface of the screw head 21 of the bone plate screw 2 is provided with a retaining strip 211, as shown in fig. 4, a plurality of retaining teeth 12 which are tilted up along the screwing direction of the bone plate screw 2 are arranged around one end of the through hole 11, and the retaining teeth 12 are matched with the retaining strip 211 to limit the reverse rotation of the bone plate screw 2.
The supporting surface of the screw head 21 of the bone plate screw 2 is a conical surface, and a plurality of backstop strips 211 are circumferentially arranged on the supporting surface of the screw head 21; one end of the through hole 11 is provided with a counter bore, and a plurality of backstop teeth 12 which are tilted along the screwing direction of the bone plate screw 2 are circumferentially arranged in the counter bore.
As shown in fig. 5 and 6, the other end of the through hole 11 is circumferentially provided with a plurality of elastic legs 13, and the elastic legs 13 elastically deform the bone plate 1 in the direction of the center line of the through hole 11. Preferably, as shown in fig. 5, the number of the elastic supporting legs 13 is four, the elastic supporting legs are uniformly distributed around one end of the through hole 11 in a splayed structure, and the cross section of the elastic supporting legs 13 is arc-shaped.
As shown in fig. 2 and 3, the bone plate 1 and the bone plate screw 2 satisfy the following conditions: a > B > P/N, where P is the lead of the bone plate screw 2, A is the height of elastic deformation of the elastic leg 13, B is the down-pressure height of the relief bar 211, P is the external thread lead of the bone plate screw 2, and N is the number of relief teeth 12.
As shown in fig. 7, the lower section of the screw rod 22 of the bone plate screw 2 is provided with an external thread 222, and the circumferential surface of the upper section is provided with a plurality of barb portions 221 for restricting the bone plate screw 2 from withdrawing from the bone body 3 of the patient. The barb 221 has a conical structure, and an included angle between the center line of the barb 221 and the axis line of the screw 22 is 30 ° to 60 °.
As shown in fig. 7, a tightening part 23 is fixedly connected to the upper part of the screw head 21, the tightening part 23 has a prismatic structure, and a mounting tool such as a socket wrench can be used to fit over the tightening part 23 to tighten the fixing screw 2. Preferably, the screwing part 23 is in threaded connection with the screw head 21, and the screwing direction of the screwing part 23 is the same as the screwing direction of the bone plate screw 2; or the lower section of the screwing part 23 is circumferentially provided with a twisting-off cone groove 231, and in order to reduce the height of the screw head 21 protruding out of the bone plate 1, the groove bottom of the twisting-off cone groove 231 is arranged close to the upper surface of the screw head 21; a plurality of strip-shaped grooves 232 are circumferentially arranged in the twisting-off cone groove 231, and the strip-shaped grooves 232 are arranged along the axial direction of the screwing part 23.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. The utility model provides a but bone repair fixed subassembly of pretension backstop, includes bone fracture plate (1) and bone plate screw (2), be equipped with a plurality of through-hole (11) on bone fracture plate (1), bone plate screw (2) wear to establish inside through-hole (11), bone fracture plate (1) and bone plate screw (2) are made its characterized in that by absorbable material: a retaining strip (211) is arranged on the supporting surface of the screw head (21) of the bone plate screw (2), a plurality of retaining teeth (12) which are tilted up along the screwing direction of the bone plate screw (2) are arranged around one end of the through hole (11), and the retaining teeth (12) are matched with the retaining strip (211) to limit the reverse rotation of the bone plate screw (2);
the other end of the through hole (11) is circumferentially provided with a plurality of elastic support legs (13), and the elastic support legs (13) enable the bone fracture plate (1) to elastically deform in the direction of the central line of the through hole (11); the lower section of the screw rod (22) of the bone plate screw (2) is provided with an external thread (222), and the circumferential surface of the upper section of the screw rod is provided with a plurality of barb parts (221).
2. The pretensionable, backstop bone repair fixation assembly of claim 1, wherein: the supporting surface of the screw head (21) of the bone plate screw (2) is a conical surface, and a plurality of retaining strips (211) are circumferentially arranged on the supporting surface of the screw head (21); one end of the through hole (11) is provided with a counter bore, and a plurality of backstop teeth (12) which are tilted along the screwing direction of the bone plate screw (2) are circumferentially arranged in the counter bore.
3. The pretensionable, backstop bone repair fixation assembly of claim 1, wherein: the bone plate (1) and the bone plate screw (2) meet the following conditions: a > B > P/N, wherein P is the lead of the bone plate screw (2), A is the elastic deformation height of the elastic support leg (13), B is the depression height of the escape bar (211), P is the external thread lead of the bone plate screw (2), and N is the number of escape teeth (12).
4. The pretensionable, backstop bone repair fixation assembly of claim 1, wherein: the barb part (221) is in a cone-shaped structure, and an included angle between the central line of the barb part (221) and the axial line of the screw (22) is 30-60 degrees.
5. The pretensionable, backstop bone repair fixation assembly of one of claims 1-4, wherein: the upper part of the screw head (21) is fixedly connected with a screwing part (23), and the screwing part (23) is of a prismatic structure.
6. The pretensionable, backstop bone repair fixation assembly of claim 5, wherein: the screwing part (23) is in threaded connection with the screw head (21), and the screwing direction of the screwing part (23) is the same as the screwing direction of the bone plate screw (2).
7. The pretensionable, backstop bone repair fixation assembly of claim 6, wherein: the lower section of the screwing part (23) is circumferentially provided with a twisting-off cone groove (231).
8. The pretensionable, backstop bone repair fixation assembly of claim 7, wherein: a plurality of strip-shaped grooves (232) are circumferentially arranged in the twisting-off cone groove (231), and the strip-shaped grooves (232) are arranged along the axial direction of the screwing part (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233392.5A CN110801273B (en) | 2019-12-05 | 2019-12-05 | Bone repair fixing assembly capable of pre-tightening and stopping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233392.5A CN110801273B (en) | 2019-12-05 | 2019-12-05 | Bone repair fixing assembly capable of pre-tightening and stopping |
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| Publication Number | Publication Date |
|---|---|
| CN110801273A CN110801273A (en) | 2020-02-18 |
| CN110801273B true CN110801273B (en) | 2024-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911233392.5A Active CN110801273B (en) | 2019-12-05 | 2019-12-05 | Bone repair fixing assembly capable of pre-tightening and stopping |
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| CN111281608B (en) * | 2020-02-28 | 2022-12-30 | 北京大学第一医院 | Module for repairing cartilage defect and forming method thereof |
| CN111419483B (en) * | 2020-04-17 | 2025-03-25 | 常州集硕医疗器械有限公司 | Self-stabilizing anti-regression intervertebral fusion device |
| CN111839829B (en) * | 2020-06-09 | 2023-06-09 | 遵义医科大学附属医院 | Zero notch interbody fusion cage |
| CN113967061B (en) * | 2020-07-24 | 2024-08-02 | 常州华森医疗器械股份有限公司 | Special screw for rib plate |
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| CN211534752U (en) * | 2019-12-05 | 2020-09-22 | 成都美益达医疗科技有限公司 | Bone repair fixing assembly capable of pre-tightening and stopping |
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| US8623019B2 (en) * | 2007-07-03 | 2014-01-07 | Pioneer Surgical Technology, Inc. | Bone plate system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204971531U (en) * | 2015-09-10 | 2016-01-20 | 苏州爱得科技发展股份有限公司 | Brestbone folds fixing device |
| CN211534752U (en) * | 2019-12-05 | 2020-09-22 | 成都美益达医疗科技有限公司 | Bone repair fixing assembly capable of pre-tightening and stopping |
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| CN110801273A (en) | 2020-02-18 |
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