CN113813033A - Angle-adjustable self-locking type lumbosacral anterior channel vertebral arch fixing nail plate fixing method and system - Google Patents
Angle-adjustable self-locking type lumbosacral anterior channel vertebral arch fixing nail plate fixing method and system Download PDFInfo
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- CN113813033A CN113813033A CN202111120248.8A CN202111120248A CN113813033A CN 113813033 A CN113813033 A CN 113813033A CN 202111120248 A CN202111120248 A CN 202111120248A CN 113813033 A CN113813033 A CN 113813033A
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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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7058—Plates mounted on top of bone anchor heads or shoulders
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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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7059—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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7064—Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
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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
- A61B17/8052—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
- A61B17/8057—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 the interlocking form comprising a thread
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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
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
-
- 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
- A61B2017/564—Methods for bone or joint treatment
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Prostheses (AREA)
Abstract
The invention discloses a fixing method and a fixing system for an angle-adjustable self-locking lumbosacral anterior approach transforaminal pedicle screw plate, wherein a fixing screw is inserted into a universal screw hole from one side of an external swing part and is implanted into a spinal lumbosacral section of a position to be operated through the thread of the fixing screw; the invention can reliably fix the anterior way of the post-operation lumbosacral segment of the spine, and has the characteristics of flexible use and good conformity.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a fixing method and a fixing system for an angle-adjustable self-locking type lumbosacral anterior approach vertebral arch fixing nail plate.
Background
The diseases of the lumbar and sacral sections of the spine are common diseases and frequently encountered diseases in orthopedics department, which seriously troubles the work and life of people. The operation is an important treatment method for treating diseases of the lumbosacral segment, and the main operation modes comprise: the simple focus-removing bone grafting and the anterior focus-removing bone grafting combined posterior pedicle screw internal fixation are performed through an abdominal cavity or an extraperitoneal approach. The pure anterior focus is removed and the bone grafting is fixed due to the lack of a firm and reliable anterior internal fixing device, so that the stability of the lumbosacral vertebrae is difficult to reconstruct and the physiological curvature of the spine is recovered. Therefore, auxiliary external fixation is needed after operation, and patients are often difficult to tolerate. Although a good mechanical environment can be provided for the fusion of the spine in the anterior-posterior combined operation, the posture of the patient needs to be changed in the operation due to the anterior-posterior two operation approaches, the operation wound is large, the operation time is long, and the operation risk is increased undoubtedly. In addition, the combined approach also has the problems that the anterior bone graft is difficult to effectively open, the stability of posterior fixation to the anterior central column of the vertebral body is poor, and complications such as the absorption of the bone graft, the formation of a pseudoarthrosis, the relapse of deformity, the loosening and the fracture of an internal fixture and the like still occur in the long term.
At present, the clinical anterior internal fixation technology of the lumbosacral segment of the spine is developed, HaKY and the like give manual pre-bent anatomical plates to anterior internal fixation after focus clearing surgery of 5 sacral 1 segments of the waist by people in mid-buildings and the like, and good effects are obtained. In addition, a plurality of anterior internal fixators are arranged abroad to increase the stability of the anterior interbody fusion operation, and can complete the intervertebral fusion and the internal fixation operation through the anterior way at one time, thereby avoiding the complication of the posterior operation. These internal fixator devices have: FRA with front cross screws; an interbody cage with a forward steel plate; or a separate anterior steel plate internal fixation device. These internal fixation systems have the following problems: 1. higher risk of injury to common iliac arteries and veins; 2. the direction of the screw is relatively fixed, and the use is not flexible; 3. the biomechanical stability needs further verification; 4. the steel plate is composed of two small steel plates, and is not designed in the radian of sagittal plane and coronal plane, so the use in the operation is very inconvenient.
Disclosure of Invention
The invention aims to provide a method and a system for fixing a self-locking lumbosacral anterior transforaminal arch fixing nail plate with adjustable angle. The invention can reliably fix the anterior way of the post-operation lumbosacral segment of the spine, and has the characteristics of flexible use and good conformity.
The technical scheme of the invention is as follows: the angle-adjustable self-locking type lumbosacral anterior approach vertebral arch fixing nail plate system fixing method comprises the steps that a fixing screw is inserted into a universal screw hole from one side of an external swing part and is implanted into a spinal lumbosacral section of a position to be operated through threads of the fixing screw, in the implanting process, a limiting part of the fixing screw is matched with a clamping part of the universal screw hole, so that the position of the fixing screw on a fixing plate body is kept fixed, meanwhile, the fixing screw is controlled to rotate and incline in the external swing part and an internal swing part by taking the clamping part as a supporting point, and along with the increase of the implanting depth of the fixing screw, a movable part pushes the inner side surface of the external swing part matched with the movable part to enable the fixing plate body to be close to the operation position; four set screw all accomplish the back, form the auto-lock, and the fixed plate body realizes laminating completely with patient's backbone lumbosacral section, and the first arc that has is buckled and the second arc is buckled and is strengthened and correspond the degree of agreeing with of laminating position, reaches stable three post and fixes.
The angle-adjustable self-locking lumbosacral anterior approach vertebral arch fixing nail plate system comprises a rectangular fixing plate body, wherein the middle part of the fixing plate body is provided with a first arc-shaped bend which has an obtuse included angle and is parallel to the edge of the fixing plate body, and the middle part of the first arc-shaped bend is provided with a second arc-shaped bend which is perpendicular to the first arc-shaped bend; four corners of the fixing plate body are provided with universal screw holes, and fixing screws are arranged in the universal screw holes; the universal screw hole comprises an inner swinging part which is bent towards the first arc shape to form an included angle, an outer swinging part which is symmetrical with the inner swinging part is arranged on the fixed plate body on the opposite side of the position of the inner swinging part, and a clamping part is arranged between the inner swinging part and the outer swinging part; the fixing screw comprises a movable part which is positioned on the outer swinging part and matched with the outer swinging part, a limiting part is arranged between the movable part and the thread of the fixing screw, and the limiting part is matched with the clamping part.
In the angle-adjustable self-locking lumbosacral anterior channel vertebral arch fixing nail plate system, the inner swinging part and the outer swinging part are in a circular truncated cone shape, and one end of a small circular surface of the inner swinging part is opposite to one end of a small circular surface of the outer swinging part; the size of the clamping part corresponds to the size of one end of the small circular surface of the inner swing part and the outer swing part; the movable part is in a round table shape, the size of one end of the large round surface of the outer swing part is larger than that of one end of the large round surface of the movable part, and the side slope of the outer swing part corresponds to that of the movable part; the size of the limiting part is consistent with that of one end of the small circular surface of the movable part.
In the angle-adjustable self-locking lumbosacral anterior transforaminal arch fixing nail plate system, the side surface of the fixing plate body is a curved surface which is bent towards the middle part of the fixing plate body; the corners of the fixed plate body are provided with arc transitions.
According to the angle-adjustable self-locking type lumbosacral anterior transforaminal arch fixing nail plate system, the middle part of the fixing plate body is provided with an opening.
According to the angle-adjustable self-locking type lumbosacral anterior transforaminal arch fixing nail plate system, the fixing plate body is made of a titanium alloy material.
Compared with the prior art, the fixing screw is inserted into the universal screw hole from one side of the outer swing part and is implanted into the lumbar sacral section of the spine at the position to be operated through the thread of the fixing screw, in the implantation process, the limiting part of the fixing screw is matched with the clamping part of the universal screw hole, so that the fixing screw is kept fixed at the position on the fixing plate body, meanwhile, the fixing screw is controlled to rotate and incline in the outer swing part and the inner swing part by taking the clamping part as a supporting point, and along with the increase of the implantation depth of the fixing screw, the movable part pushes the inner side surface of the outer swing part matched with the movable part to enable the fixing plate body to be close to the operation part, so that the fixing screw is flexibly suitable for various different operation fixing positions; after the four fixing screws are all arranged, self-locking is formed, the fixing plate body is completely attached to the lumbosacral section of the spine of the patient, and the first arc-shaped bending and the second arc-shaped bending are arranged to enhance the degree of engagement with the corresponding attachment position, so that stable three-column fixation to the operation position is achieved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a gimbaled screw portion of the present invention.
Reference numerals
1. Fixing the plate body; 2. the first arc-shaped bending; 3. second arc bending; 4. a universal screw hole; 5. a set screw; 6. an inner swing portion; 7. an outer swing portion; 8. a clamping portion; 9. a movable portion; 10. a limiting part; 11. and (4) opening.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Example (b): an angle-adjustable self-locking lumbosacral anterior approach vertebral arch fixing nail plate system is shown in figure 1 and comprises a rectangular fixing plate body 1, wherein the middle part of the fixing plate body 1 is provided with a first arc-shaped bend 2 which has an obtuse included angle and is parallel to the edge of the fixing plate body 1, the middle part of the first arc-shaped bend 2 is provided with a second arc-shaped bend 3 which is vertical to the first arc-shaped bend 2, and the included angle of the second arc-shaped bend 3 is larger than that of the first arc-shaped bend 2; as shown in fig. 2, four corners of the fixing plate body 1 are provided with universal screw holes 4, and fixing screws 5 are arranged in the universal screw holes 4; the universal screw hole 4 comprises an inner swinging part 6 facing the inner side of an included angle formed by the first arc-shaped bending part 2, an outer swinging part 7 symmetrical to the inner swinging part is arranged on the fixed plate body 1 on the opposite side of the position of the inner swinging part 6, and a clamping part 8 is arranged between the inner swinging part 6 and the outer swinging part 7; the fixing screw 5 comprises a movable part 9 which is positioned on the outer swinging part 7 and matched with the outer swinging part, a limiting part 10 is arranged between the movable part 9 and the thread of the fixing screw 5, and the limiting part 10 is matched with the clamping part 8; the inner swing part 6 and the outer swing part 7 are in a circular truncated cone shape, and one end of a small circular surface of the inner swing part 6 is opposite to one end of a small circular surface of the outer swing part 7 in the direction; the size of the clamping part 8 corresponds to the size of one end of the small circular surface of the inner swing part 6 and the outer swing part 7; the movable part 9 is in a round table shape, the size of one end of the large round surface of the outer swing part 7 is larger than that of one end of the large round surface of the movable part 9, the side slope of the outer swing part 7 corresponds to that of the movable part 9, and the stability is good during fitting; the size of the limiting part 10 is consistent with that of one end of the small circular surface of the movable part 9; the side surface of the fixed plate body 1 is a curved surface which is bent towards the middle part of the fixed plate body 1, so that the area and the volume are reduced, and the adaptability in use is further improved; the corners of the fixed plate body 1 are provided with arc transitions, so that the sharp feeling generated in use is reduced; the middle part of the fixing plate body 1 is provided with an opening, so that the quality can be reduced on the basis of not influencing the reliability of the original structure, the manufacturing cost is reduced, the fixing plate body can be better attached to the lumbosacral section of the spine of a patient, and the possible conflict is reduced; the fixed plate body 1 is made of titanium alloy material and has high strength.
According to the fixing method of the angle-adjustable self-locking lumbosacral anterior approach vertebral arch fixing nail plate system, the fixing screw is inserted into the universal screw hole from one side of the outer swinging part and is implanted into the lumbar sacral section of the spine at the position to be operated through the thread of the fixing screw, in the implantation process, the limiting part of the fixing screw is matched with the clamping part of the universal screw hole, so that the position of the fixing screw on the fixing plate body is kept fixed, meanwhile, the fixing screw is controlled to rotate and incline in the outer swinging part and the inner swinging part by taking the clamping part as a supporting point, and as the implantation depth of the fixing screw is increased, the movable part pushes the inner side surface of the outer swinging part matched with the movable part to enable the fixing plate body to be close to the operation position, so that the fixing plate can be flexibly adapted to various different operation fixing positions; after the four fixing screws are all arranged, self-locking is formed, the fixing plate body is completely attached to the lumbosacral section of the spine of the patient, and the first arc-shaped bending and the second arc-shaped bending are arranged to enhance the degree of engagement with the corresponding attachment position, so that stable three-column fixation to the operation position is achieved.
Claims (6)
1. The fixing method of the angle-adjustable self-locking type lumbosacral anterior transforaminal arch fixing nail plate system is characterized in that: inserting a fixing screw into the universal screw hole from one side of the outer swinging part and implanting the fixing screw into the lumbosacral section of the spine at the position to be operated through the thread of the fixing screw, wherein in the implanting process, the limiting part of the fixing screw is matched with the clamping part of the universal screw hole to ensure that the position of the fixing screw on the fixing plate body is kept fixed, meanwhile, the fixing screw is controlled to rotate and incline in the outer swinging part and the inner swinging part by taking the clamping part as a supporting point, and along with the increase of the implanting depth of the fixing screw, the movable part pushes the inner side surface of the outer swinging part matched with the movable part to ensure that the fixing plate body is close to the operation part; four set screw all accomplish the back, form the auto-lock, and the fixed plate body realizes laminating completely with patient's backbone lumbosacral section, and the first arc that has is buckled and the second arc is buckled and is strengthened and correspond the degree of agreeing with of laminating position, reaches stable three post and fixes.
2. The adjustable angle self-locking lumbosacral anterior transforaminal fixation nail plate system of claim 1, wherein: the fixing plate comprises a rectangular fixing plate body (1), wherein a first arc-shaped bend (2) which has an obtuse included angle and is parallel to the edge of the fixing plate body (1) is arranged in the middle of the fixing plate body (1), and a second arc-shaped bend (3) which is perpendicular to the first arc-shaped bend (2) is arranged in the middle of the first arc-shaped bend; four corners of the fixing plate body (1) are provided with universal screw holes (4), and fixing screws (5) are arranged in the universal screw holes (4); the universal screw hole (4) comprises an inner swinging part (6) facing the inner side of an included angle formed by the first arc-shaped bending part (2), an outer swinging part (7) symmetrical to the inner swinging part is arranged on the fixed plate body (1) on the opposite side of the position of the inner swinging part (6), and a clamping part (8) is arranged between the inner swinging part (6) and the outer swinging part (7); the fixing screw (5) comprises a movable part (9) which is positioned on the outer swinging part (7) and matched with the outer swinging part, a limiting part (10) is arranged between the movable part (9) and the thread of the fixing screw (5), and the limiting part (10) is matched with the clamping part (8).
3. The adjustable angle self-locking lumbosacral anterior transforaminal fixation nail plate system of claim 2, wherein: the inner swing part (6) and the outer swing part (7) are in a circular truncated cone shape, and one end of a small circular surface of the inner swing part (6) is opposite to one end of a small circular surface of the outer swing part (7) in orientation; the size of the clamping part (8) corresponds to the size of one end of the small circular surface of the inner swing part (6) and the outer swing part (7); the movable part (9) is in a round table shape, the size of one end of the large round surface of the outer swing part (7) is larger than that of one end of the large round surface of the movable part (9), and the side slope of the outer swing part (7) corresponds to that of the movable part (9); the size of the limiting part (10) is consistent with that of one end of the small circular surface of the movable part (9).
4. The adjustable angle self-locking lumbosacral anterior transforaminal fixation nail plate system of claim 2, wherein: the side surface of the fixed plate body (1) is a curved surface which is bent towards the middle part of the fixed plate body (1); the corners of the fixed plate body (1) are provided with arc transitions.
5. The adjustable angle self-locking lumbosacral anterior transforaminal fixation nail plate system of claim 2, wherein: the middle part of the fixed plate body (1) is provided with an opening (11).
6. The adjustable angle self-locking lumbosacral anterior transforaminal fixation nail plate system of claim 2, wherein: the fixed plate body (1) is made of a titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111120248.8A CN113813033A (en) | 2021-09-24 | 2021-09-24 | Angle-adjustable self-locking type lumbosacral anterior channel vertebral arch fixing nail plate fixing method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111120248.8A CN113813033A (en) | 2021-09-24 | 2021-09-24 | Angle-adjustable self-locking type lumbosacral anterior channel vertebral arch fixing nail plate fixing method and system |
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| CN113813033A true CN113813033A (en) | 2021-12-21 |
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| CN202111120248.8A Pending CN113813033A (en) | 2021-09-24 | 2021-09-24 | Angle-adjustable self-locking type lumbosacral anterior channel vertebral arch fixing nail plate fixing method and system |
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| CN (1) | CN113813033A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2598519Y (en) * | 2003-01-29 | 2004-01-14 | 邱贵兴 | Intenral fixed device for vertebral arch pedicle of vertebral column |
| CN201055419Y (en) * | 2007-07-20 | 2008-05-07 | 中国人民解放军第三军医大学第一附属医院 | Spinal column waist 5 sacrum 1 front steel plate screw internal fixation device |
| CN101249018A (en) * | 2008-03-31 | 2008-08-27 | 中国人民解放军第三军医大学第二附属医院 | Waist five-vertebra and lumbosacral one-vertebra anterior internal fixation steel plate |
| CN101835437A (en) * | 2007-08-20 | 2010-09-15 | 纽文思公司 | Surgical fixation system and related methods |
| US20130296938A1 (en) * | 2011-02-03 | 2013-11-07 | Medicrea International | Osteosynthesis plate for lumbosacral joint |
| CN103876816A (en) * | 2012-12-19 | 2014-06-25 | 上海微创骨科医疗科技有限公司 | Lumbosacral anterior plate fixing device |
| CN107485437A (en) * | 2017-09-30 | 2017-12-19 | 苏州欣荣博尔特医疗器械有限公司 | Universal lock bone screw and use its common locking bone fracture plate |
| CN108186102A (en) * | 2018-02-05 | 2018-06-22 | 上海锐植医疗器械有限公司 | Non metal implant screw locking structure |
| CN112617992A (en) * | 2020-12-31 | 2021-04-09 | 北京市富乐科技开发有限公司 | Front-path multidirectional self-locking titanium plate system |
| CN213697144U (en) * | 2020-10-16 | 2021-07-16 | 上海三友医疗器械股份有限公司 | Universal fixed pedicle screw assembly |
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2021
- 2021-09-24 CN CN202111120248.8A patent/CN113813033A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2598519Y (en) * | 2003-01-29 | 2004-01-14 | 邱贵兴 | Intenral fixed device for vertebral arch pedicle of vertebral column |
| CN201055419Y (en) * | 2007-07-20 | 2008-05-07 | 中国人民解放军第三军医大学第一附属医院 | Spinal column waist 5 sacrum 1 front steel plate screw internal fixation device |
| CN101835437A (en) * | 2007-08-20 | 2010-09-15 | 纽文思公司 | Surgical fixation system and related methods |
| CN101249018A (en) * | 2008-03-31 | 2008-08-27 | 中国人民解放军第三军医大学第二附属医院 | Waist five-vertebra and lumbosacral one-vertebra anterior internal fixation steel plate |
| US20130296938A1 (en) * | 2011-02-03 | 2013-11-07 | Medicrea International | Osteosynthesis plate for lumbosacral joint |
| CN103876816A (en) * | 2012-12-19 | 2014-06-25 | 上海微创骨科医疗科技有限公司 | Lumbosacral anterior plate fixing device |
| CN107485437A (en) * | 2017-09-30 | 2017-12-19 | 苏州欣荣博尔特医疗器械有限公司 | Universal lock bone screw and use its common locking bone fracture plate |
| CN108186102A (en) * | 2018-02-05 | 2018-06-22 | 上海锐植医疗器械有限公司 | Non metal implant screw locking structure |
| CN213697144U (en) * | 2020-10-16 | 2021-07-16 | 上海三友医疗器械股份有限公司 | Universal fixed pedicle screw assembly |
| CN112617992A (en) * | 2020-12-31 | 2021-04-09 | 北京市富乐科技开发有限公司 | Front-path multidirectional self-locking titanium plate system |
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