CN113180809B - Sliding pedicle screw for scoliosis - Google Patents
Sliding pedicle screw for scoliosis Download PDFInfo
- Publication number
- CN113180809B CN113180809B CN202110591010.7A CN202110591010A CN113180809B CN 113180809 B CN113180809 B CN 113180809B CN 202110591010 A CN202110591010 A CN 202110591010A CN 113180809 B CN113180809 B CN 113180809B
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- Prior art keywords
- screw
- sleeve
- nail
- scoliosis
- pedicle screw
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- 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
- A61B17/70—Spinal positioners or stabilisers, e.g. 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
-
- 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
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
-
- 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
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- 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
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7046—Screws or hooks combined with longitudinal elements which do not contact vertebrae the screws or hooks being mobile in use relative to the longitudinal element
-
- 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
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
-
- 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
- A61B2017/564—Methods for bone or joint treatment
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (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 invention relates to the technical field of spinal medical treatment, in particular to a sliding pedicle screw for scoliosis. The sliding pedicle screw for scoliosis is connected with a nail rod and comprises a screw, a nail seat connected with the upper end of the screw, a compression ring arranged in an inner cavity of the nail seat, a sleeve penetrating through the inner cavity of the compression ring and a jackscrew in threaded connection with the top of the inner cavity of the nail seat, wherein the inner wall of the sleeve is smooth, the nail rod penetrates through the inner cavity of the sleeve, the outer wall of the nail rod is in contact with the inner wall of the sleeve, and the lower end face of the jackscrew is abutted against the upper end of the sleeve. The sliding pedicle screw for scoliosis can slide along with the growth of the human spine, the distance between the pedicle screws can be adjusted without manual adjustment of multiple operations, the correction effect is good, and the sliding pedicle screw has more practical value in clinic.
Description
Technical Field
The invention relates to the technical field of spinal medical treatment, in particular to a sliding pedicle screw for scoliosis.
Background
Scoliosis is commonly known as scoliosis, which is a three-dimensional deformity of the spine, including sequence abnormalities in the coronal, sagittal, and axial positions. The serious scoliosis can affect the growth and development of infants and teenagers, so that the body is deformed, and serious people can affect the heart lung function and even involve spinal cord to cause paralysis. The scoliosis orthopedic device needs to use a nail rod and a pedicle screw to form a distraction and traction correction effect on the spine, so that the spine is corrected. In use, such scoliosis orthopedic devices require periodic adjustment of the position of the pedicle screws as the bone of children and teenagers grow, and therefore require multiple procedures.
Disclosure of Invention
The invention aims to provide the sliding pedicle screw for scoliosis, which overcomes the defects in the prior art, can slide along with the growth of the human spine, can adjust the interval between the pedicle screws without manual adjustment of multiple operations, has good correction effect and has more practical value in clinic.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides a sliding type pedicle of vertebral arch screw for scoliosis is connected with the nail stick, includes the screw, with the nail seat that the screw upper end is connected, set up in the clamping ring of nail seat inner chamber, pass the sleeve of clamping ring inner chamber and with nail seat inner chamber top threaded connection's jackscrew, the sleeve inner wall is smooth, the nail stick passes from the sleeve inner chamber, the outer wall and the sleeve inner wall contact of nail stick, the lower terminal surface of jackscrew is contradicted in telescopic upper end when the jackscrew installation is accomplished, install ordinary pedicle of vertebral arch screw and the sliding type pedicle of vertebral arch screw for scoliosis on the nail stick in the installation, along with the growth of backbone, ordinary pedicle of vertebral arch screw position keeps motionless, and the sliding type pedicle of vertebral arch screw for scoliosis carries out sliding adjustment along the nail stick.
Furthermore, the outer diameter of the sleeve is gradually reduced from two ends to the middle part, and the wall thickness of the sleeve is gradually reduced from two ends to the middle part, so that the structure occupies a small volume of the inner cavity of the nail seat, and the volume of the nail seat can be furthest reduced; in addition, the two ends of the sleeve are main friction ends, and the thickness of the two ends is large, so that the sleeve can be effectively prevented from being damaged by friction.
Further, the both ends of telescopic all are provided with the card along, and the sleeve is located the nail seat inner chamber, and telescopic card along the outside of card at the nail seat inner chamber, card along with sleeve self shape setting matched with plays the effect that prevents that the sleeve from deviating from the nail seat inner chamber.
Furthermore, the sleeve is made of ultra-high molecular weight polyethylene, and the ultra-high molecular weight polyethylene is impact-resistant, wear-resistant and good in self-lubricating performance.
Furthermore, the clamping ring is clamped with the inner cavity of the nail seat, and the installation and the limiting are convenient.
Further, the clamping ring is of a U-shaped structure, the shape of the inner wall of the clamping ring is matched with the shape of the middle section of the sleeve, and the shape design of the clamping ring is favorable for further preventing the sleeve from falling out of the inner cavity of the nail seat.
Further, be provided with spacing round pin axle on the nail seat, be provided with fore-and-aft rectangular hole on the outer wall of clamping ring, the inner of spacing round pin axle inserts in the rectangular hole of clamping ring, and spacing round pin axle is used for restricting the clamping ring rotation, effectively prevents that the sleeve in clamping ring activity morning from being out of shape by the extrusion, avoids appearing the sleeve and is difficult to pass the problem of nail stick.
Further, the lower extreme of jackscrew is provided with interior chamfer, prevents that the sleeve from opening, forms good spacing effect to the sleeve.
Further, the screw is the bulb nail, the lower extreme of nail seat is provided with the screw mounting hole, the spacing hole of screw has been seted up to the lower extreme of clamping ring, and the nail pole of screw wears out from the screw mounting hole, and the bulb card of screw is in the spacing hole of screw.
Further, the outer wall of nail stick comprises smooth section and dull polish section, and the scoliosis is installed on the smooth section of nail stick with slidingtype pedicle screw, and ordinary pedicle screw is installed on nail stick dull polish section, along with the growth of backbone ordinary pedicle screw be difficult for producing the displacement on the dull polish section, and slidingtype pedicle screw can carry out the displacement on smooth section, adjusts the interval between the pedicle screw.
The beneficial effects of the invention are as follows: compared with the prior art, the sliding pedicle screw for scoliosis has the following advantages: (1) The sliding type pedicle screw for scoliosis is arranged on the smooth section of the nail rod, the common pedicle screw is arranged on the nail rod grinding section, the common pedicle screw is not easy to displace on the grinding section along with the growth of the spine, the sliding type pedicle screw can displace on the smooth section, and the distance between the pedicle screws is adjusted, so that the position of the pedicle screw does not need to be manually adjusted by multiple operations; (2) The sliding pedicle screw has reasonable structural design, can furthest reduce the volume of the screw seat, and the sleeve cannot deviate from the inner cavity of the screw seat, is not easy to damage, is convenient to install and use, and has practical value in clinic.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is an exploded view of the general structure of the present invention;
FIG. 3 is a schematic view of the nail holder and press ring of the present invention;
FIG. 4 is a schematic view of another angular configuration of the nail holder and press ring of the present invention;
FIG. 5 is a schematic cross-sectional view of a sleeve structure of the present invention;
FIG. 6 is an enlarged schematic view of the structure of the jackscrew of the present invention;
the novel screw bolt comprises a screw bolt rod 1, a screw bolt 2, a screw bolt seat 3, a compression ring 4, a sleeve 5, a jackscrew 6, a clamping edge 7, a limiting pin shaft 8, a strip hole 9, a screw bolt mounting hole 10 and a screw bolt limiting hole 11.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the embodiment shown in fig. 1-6, a sliding pedicle screw for scoliosis is connected with a rod 1, and comprises a screw 2, a nail seat 3 connected with the upper end of the screw 2, a compression ring 4 arranged in the inner cavity of the nail seat 3, a sleeve 5 penetrating through the inner cavity of the compression ring 4 and a jackscrew 6 in threaded connection with the top of the inner cavity of the nail seat 3, the inner wall of the sleeve 5 is smooth, the rod 1 penetrates through the inner cavity of the sleeve 5, the outer wall of the rod 1 is contacted with the inner wall of the sleeve 5, the lower end face of the jackscrew 6 is abutted against the upper end of the sleeve 5 when the jackscrew 6 is installed, and a common pedicle screw and a sliding pedicle screw for scoliosis are installed on the rod 1 in the installation process, and the common pedicle screw position is kept motionless along with the growth of a spine, and the sliding pedicle screw for scoliosis is adjusted along the rod 1.
In this embodiment, the outer diameter of the sleeve 5 is gradually reduced from two ends to the middle, and the wall thickness of the sleeve 5 is gradually reduced from two ends to the middle, so that the volume of the inner cavity of the nail seat 3 occupied by the structural arrangement mode is small, and the volume of the nail seat 3 can be reduced to the greatest extent; in addition, the two ends of the sleeve 5 are main friction ends, and the thickness of the two ends is large, so that the sleeve 5 can be effectively prevented from being damaged by friction.
In this embodiment, the both ends of sleeve 5 all are provided with card along 7, and sleeve 5 is located nail seat 3 inner chamber, and the card along 7 card of sleeve 5 is in the outside of nail seat 3 inner chamber, and card along 7 and sleeve 5 self shape setting cooperate, play the effect that prevents sleeve 5 from deviating from nail seat 3 inner chamber.
In this embodiment, the sleeve 5 is made of ultra-high molecular weight polyethylene, and the ultra-high molecular weight polyethylene has good impact resistance, wear resistance and self-lubricating performance.
In the embodiment, the compression ring 4 is clamped with the inner cavity of the nail seat 3, and the installation and the limiting are convenient.
In this embodiment, the clamping ring 4 has a "U" structure, the shape of the inner wall of the clamping ring 4 matches with the shape of the middle section of the sleeve 5, and the shape design of the clamping ring 4 is beneficial to further preventing the sleeve 5 from falling out of the inner cavity of the nail seat 3.
In this embodiment, be provided with spacing round pin axle 8 on the nail seat 3, be provided with fore-and-aft rectangular hole 9 on the outer wall of clamping ring 4, the inner of spacing round pin axle 8 inserts in the rectangular hole 9 of clamping ring 4, and spacing round pin axle 8 is used for restricting clamping ring 4 rotation, effectively prevents that clamping ring 4 activity morning sleeve 5 from being extruded the deformation, avoids appearing sleeve 5 and is difficult to pass the problem of nail stick 1.
In this embodiment, the lower end of the jackscrew 6 is provided with an inner chamfer to prevent the sleeve 5 from being opened, and a good limiting effect is formed on the sleeve 5.
In this embodiment, the screw 2 is a ball stud, a screw mounting hole 10 is provided at the lower end of the stud base 3, a screw limiting hole 11 is provided at the lower end of the compression ring 4, the shank of the screw 2 penetrates out of the screw mounting hole 10, and the ball stud of the screw 2 is clamped in the screw limiting hole 11.
In this embodiment, the outer wall of nail stick 1 comprises smooth section and dull polish section, and the scoliosis is installed on the smooth section of nail stick 1 with slidingtype pedicle screw, and ordinary pedicle screw is installed on nail stick 1 dull polish section, along with the growth of backbone ordinary pedicle screw be difficult for producing the displacement on the dull polish section, and slidingtype pedicle screw can carry out the displacement on smooth section, adjusts the interval between the pedicle screw.
The foregoing embodiments are merely examples of the present invention, and the scope of the present invention includes, but is not limited to, the forms and styles of the foregoing embodiments, and any suitable changes or modifications made by those skilled in the art, which are consistent with the claims of the present invention, shall fall within the scope of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110591010.7A CN113180809B (en) | 2021-05-28 | 2021-05-28 | Sliding pedicle screw for scoliosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110591010.7A CN113180809B (en) | 2021-05-28 | 2021-05-28 | Sliding pedicle screw for scoliosis |
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| Publication Number | Publication Date |
|---|---|
| CN113180809A CN113180809A (en) | 2021-07-30 |
| CN113180809B true CN113180809B (en) | 2024-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110591010.7A Active CN113180809B (en) | 2021-05-28 | 2021-05-28 | Sliding pedicle screw for scoliosis |
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| CN (1) | CN113180809B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114145828A (en) * | 2021-12-09 | 2022-03-08 | 中国医学科学院北京协和医院 | Locking structure for bone hook system and assembling method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215839406U (en) * | 2021-05-28 | 2022-02-18 | 山东威高骨科材料股份有限公司 | Sliding type pedicle screw for scoliosis |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050203513A1 (en) * | 2003-09-24 | 2005-09-15 | Tae-Ahn Jahng | Spinal stabilization device |
| US20080147122A1 (en) * | 2006-10-12 | 2008-06-19 | Jackson Roger P | Dynamic stabilization connecting member with molded inner segment and surrounding external elastomer |
| US8366745B2 (en) * | 2007-05-01 | 2013-02-05 | Jackson Roger P | Dynamic stabilization assembly having pre-compressed spacers with differential displacements |
| DE202009017789U1 (en) * | 2009-06-25 | 2010-07-01 | Orthobion Gmbh | Device for posterior stabilization of the thoracolumbar spine |
| RU194566U1 (en) * | 2019-07-02 | 2019-12-16 | Федеральное государственное бюджетное учреждение «Российский научный центр «Восстановительная травматология и ортопедия» имени академика Г.А. Илизарова» Министерства здравоохранения Российской Федерации | DYNAMIC INTERNAL SPINE LOCK |
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- 2021-05-28 CN CN202110591010.7A patent/CN113180809B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215839406U (en) * | 2021-05-28 | 2022-02-18 | 山东威高骨科材料股份有限公司 | Sliding type pedicle screw for scoliosis |
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| Publication number | Publication date |
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| CN113180809A (en) | 2021-07-30 |
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| PB01 | Publication | ||
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211230 Address after: 264200 No.26 Xiangjiang street, Huancui District, Weihai City, Shandong Province Applicant after: SHANDONG WEIGAO ORTHOPEDIC DEVICE Co.,Ltd. Applicant after: PEKING UNION MEDICAL COLLEGE Hospital Address before: 264200 No.26 Xiangjiang street, Huancui District, Weihai City, Shandong Province Applicant before: SHANDONG WEIGAO ORTHOPEDIC DEVICE Co.,Ltd. |
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