CN109009380B - Spine posterior multi-point fixing device - Google Patents

Spine posterior multi-point fixing device Download PDF

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Publication number
CN109009380B
CN109009380B CN201810710166.0A CN201810710166A CN109009380B CN 109009380 B CN109009380 B CN 109009380B CN 201810710166 A CN201810710166 A CN 201810710166A CN 109009380 B CN109009380 B CN 109009380B
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locking
posterior
pedicle
fixing
fixation
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CN109009380A (en
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黄振强
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002Longitudinal elements, e.g. rods
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7044Screws or hooks combined with longitudinal elements which do not contact vertebrae also having plates, staples or washers bearing on the vertebrae
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7055Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant connected to sacrum, pelvis or skull
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B2017/7073Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant with intervertebral connecting element crossing an imaginary spinal median surface

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Neurology (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)
  • Neurosurgery (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

The invention is suitable for the technical field of medical instruments, and provides a posterior spine multi-point fixing device. The posterior spinal multi-point fixing device comprises a plurality of first fixing plates for fixing the posterior spinal, a plurality of pedicle screws for locking the first fixing plates and a bendable connecting rod; first fixed plate is through two at least locking nails and backbone way of escape fixed connection, and the pedicle of vertebral arch nail includes interconnect's implant and connector, has first locking portion on the implant, and after the implant passed the pedicle of vertebral arch that first fixed plate implanted the backbone, first locking portion and first fixed plate threaded connection, the connective bar passed the connector to by connector locking. The pedicle screw is driven into the pedicle to be stably fixed without completely penetrating the pedicle screw into the vertebral body, so that the length of the pedicle screw is effectively reduced, the risk that the pedicle screw breaks through the inner wall of the pedicle to damage the nerve diameter is avoided, and the safety and the convenience of the operation are greatly improved.

Description

Spine posterior multi-point fixing device
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a posterior spine multi-point fixing device.
Background
The anterior vertebral pedicle is connected with a vertebral body to form an anterior spinal path, and the posterior vertebral pedicle is connected with a transverse process, an upper articular process, a lower articular process, a spinous process and a sacrum to form a posterior spinal path. The pedicle is the region of stress concentration, almost entirely composed of dense bone, the strongest part of the vertebra. The pedicle screw fixing technology is characterized in that a nail is placed at the isthmus between the upper joint and the lower joint at two sides, the pedicle screw is driven into a vertebral body through the pedicle, the pedicle screw has three-dimensional fixing and shape correcting functions, is the firmest vertebral body fixing technology recognized by the current bone field, and is used in the operations of scoliosis correction, vertebral body fracture reduction and fixation, lumbar fusion fixation and the like.
However, the existing pedicle screw fixing technology has high requirements, and the accuracy and safety of screw placement are seriously affected by the experience of doctors, articular process hyperosteogeny, pedicle morphology change and other factors. Especially, the existing pedicle screw fixing technology has high requirements on the length of the pedicle screw, the pedicle screw needs to completely penetrate through the pedicle screw and be driven into a vertebral body to stably fix the pedicle screw, and when the pedicle screw passes through the pedicle screw, the pedicle screw breaks through the inner wall of the pedicle screw and enters a vertebral canal to damage nerve roots, so that medical accidents are caused.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a posterior spinal multi-point fixing device, aiming at solving the problems of great operation difficulty and great medical risk of a pedicle screw fixing structure in the prior art.
The embodiment of the invention is realized in such a way that a posterior spine multipoint fixing device is provided, which comprises a plurality of first fixing plates for fixing the posterior spine, a plurality of pedicle screws for locking the first fixing plates and a bendable connecting rod;
first fixed plate is through two at least locking nails and backbone way of escape fixed connection, the pedicle of vertebral arch nail includes interconnect's implant and connector, first locking portion has on the implant, the implant passes behind the pedicle of vertebral arch of first fixed plate implanted backbone, first locking portion with first fixed plate threaded connection, the connective bar passes the connector, and by the connector locking.
Further, the first fixing plate comprises a transverse process fixing part, an inferior articular process fixing part and an isthmus which are connected into a whole, the transverse process fixing part is fixedly connected with the transverse process of the posterior spine through the locking nail, the inferior articular process fixing part is fixedly connected with the inferior articular process of the posterior spine through the locking nail, and the pedicle nail penetrates through the isthmus and is implanted into the pedicle of the spine.
Further, the first fixing plate further comprises a hook connected to the transverse process fixing part.
Further, the head end of the locking nail is provided with a second locking part, the second locking part is in threaded connection with the transverse process fixing part after the locking nail penetrates through the transverse process fixing part and is driven into a transverse process of a posterior spinal path, and the second locking part is in threaded connection with the lower joint process fixing part after the locking nail penetrates through the lower joint process fixing part and is driven into a lower joint process of the posterior spinal path.
Furthermore, the first fixing plate also comprises a spinous process fixing part which is connected with the isthmus into a whole, and the spinous process fixing part is fixedly connected with the spinous process of the posterior spine through the locking nail; when the locking nail penetrates through the spinous process fixing part and is driven into the spinous process of the posterior spine, the second locking part is in threaded connection with the spinous process fixing part.
Further, the posterior spinal multi-point fixation device further comprises a second fixation plate fixedly connected with the sacrum of the posterior spinal by at least one locking nail, the pedicle nail penetrates through the second fixation plate and is fixedly connected with a pedicle on the sacrum, and the first locking part is in threaded connection with the second fixation plate.
Further, the second fixation plate includes a sacral fixation portion and a sacral isthmus integrally connected, the sacral fixation portion being fixedly connected to a sacral ala of the sacrum by two of the locking tacks, the pedicle screw being implanted through the sacral isthmus into a pedicle of the spine.
Further, the connector is swingably and rotatably connected to the head end of the implant.
Further, the connector includes swing and latch fitting, swing with the head end of implant is connected, the connecting rod is worn to establish in the swing, the latch fitting screw is screwed on swing, and can with the connecting rod compress tightly in swing is last.
Compared with the prior art, the embodiment of the invention has the advantages that: according to the multipoint fixing device for the posterior spine, the first fixing plates are fixed with the posterior spine in a multipoint mode through the locking screws, the implant part on the pedicle screw penetrates through the first fixing plates and then is driven into the pedicle root, the first locking part on the implant part is in threaded connection with the first fixing plates, and therefore the pedicle screw can be stably fixed by driving the pedicle screw into the pedicle of the vertebral arch without completely penetrating the pedicle screw into the vertebral body, the length of the pedicle screw is effectively reduced, the risk that the inner wall of the pedicle screw is broken to damage the nerve path is avoided, and safety and convenience of an operation are greatly improved.
Drawings
FIG. 1 is a schematic view of the posterior spinal column configuration of a human body;
FIG. 2 is a schematic structural view of a posterior spinal multi-point fixation device according to an embodiment of the present invention;
FIG. 3 is a side view schematic of the structure of FIG. 2;
FIG. 4 is a schematic view of the pedicle screw arrangement of FIG. 2;
FIG. 5 is a schematic illustration of the locking pin configuration of FIG. 2;
FIG. 6 is a top view of the first fixation plate of FIG. 2 secured to the posterior aspect of the spinal column and driven into the pedicle by a pedicle screw passing through the first fixation plate;
FIG. 7 is a schematic cross-sectional view of FIG. 6;
FIG. 8 is a top view of the posterior multi-point spinal fixation device of FIG. 2 secured to the posterior of the spinal column;
FIG. 9 is a schematic structural view of a posterior spinal multi-point fixation device according to a second embodiment of the present invention;
FIG. 10 is a top view of the single first retaining plate of FIG. 9 secured to the posterior aspect of the spinal column and driven into the pedicle by a pedicle screw passing through the first retaining plate;
FIG. 11 is a top view of the posterior multi-point spinal fixation device of FIG. 9 secured to the posterior of the spinal column.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the posterior aspect of the spine of the human body is constituted by a posterior transverse process a, an upper articular process B, a lower articular process C, a spinous process D and a sacrum E, and an isthmus F is formed between the upper articular process B and the lower articular process C.
Referring to fig. 2 to 8, a posterior spinal multi-point fixation device according to an embodiment of the present invention is shown. This backbone way of escape multiple spot fixing device includes a plurality of first fixed plates 1, a plurality of pedicle of vertebral arch nail 2 and connective bar 3, and first fixed plate 1 is used for fixing on the backbone way of escape, and on pedicle of vertebral arch nail 2 was used for locking first fixed plate 1 to implant in the pedicle of vertebral arch, connective bar 3 is flexible under the effect of stress, was used for concatenating on pedicle of vertebral arch nail 2. Specifically, the first fixing plate 1 is fixedly connected with the posterior spine by at least two locking nails 4, and in this embodiment, is connected with the posterior spine by three locking nails 4 in order to ensure the stability of the fixation.
Referring to fig. 2, the pedicle screw 2 includes an implant 21 and a connector 22 connected to each other, the implant 21 has a first locking portion 210, a thread is disposed on a circumferential wall of the first locking portion 210, a threaded hole is formed in the first fixing plate 1, and after the implant 21 passes through the threaded hole in the first fixing plate 1 and is implanted into a pedicle of a vertebral column, the first locking portion 210 can be in threaded connection with the threaded hole in the first fixing plate 1 to fix the pedicle screw 2. The connecting rod 3 passes through the connector 22 and is locked by the connector 22, so as to realize the pedicle screw fixing technology.
In the above embodiment, the first fixing plate 1 includes the transverse process fixing portion 11, the inferior articular process fixing portion 12, the isthmus 13 and the hook 14 connected at the transverse process fixing portion 11, the transverse process fixing portion 11 is fixedly connected with the transverse process a of the posterior approach of the spine by the locking nail 4, and the transverse process a is hooked by the hook 14, the inferior articular process fixing portion 12 is fixedly connected with the inferior articular process C of the posterior approach of the spine by the locking nail 4, so that the first fixing plate 1 can be fixed on the posterior approach of the spine, the pedicle screw 2 is implanted into the pedicle of the spine through the isthmus 13, and the pedicle screw 2 is locked by the mutual threaded connection of the threaded hole on the first fixing plate 1 and the first locking portion 210.
In the above embodiment, the head end of the locking nail 4 has the second locking portion 41, and when the locking nail 4 is driven into the transverse process a of the posterior spinal column through the transverse process fixing portion 11, the second locking portion 41 is screw-coupled with the transverse process fixing portion 11, and when the locking nail 4 is driven into the inferior articular process C of the posterior spinal column through the inferior articular process fixing portion 12, the second locking portion 41 is screw-coupled with the inferior articular process fixing portion 12, thereby improving the fixing effect of the first fixing plate 1.
In the above embodiment, the posterior spinal multi-point fixation device further includes a second fixation plate 5, the second fixation plate 5 is fixedly connected with the sacrum E of the posterior spinal by at least one locking nail 4, the pedicle nail 2 passes through the second fixation plate 5 to be fixedly connected with the pedicle of the sacrum E, and the first locking part 210 is in threaded connection with the second fixation plate 5. Specifically, the second fixing plate 5 comprises a sacral fixing part 51 and a sacral isthmus 52 which are integrated, the sacral fixing part 51 is fixedly connected with the sacral wing E1 of the sacrum E through two locking nails 4, and a pedicle nail 2 is implanted into a pedicle of the spinal column through the sacral isthmus 52 to fix the pedicle nail 2 and the second fixing plate 5 to the sacrum E.
In the above embodiment, the connection head 22 is swingably and rotatably connected to the head end of the implant 21, specifically, the connection head 22 includes the swing member 221 and the locking member 222, the swing member 221 is connected to the head end of the implant 21, the connection rod 3 is inserted into the swing member 221, and the locking member 222 is screwed onto the swing member 221, and can press the connection rod 3 onto the swing member 221. By the swing of the swing member 221, the adjustment and fixation can be performed according to the extending direction of the spine.
Fig. 9 to 11 show a posterior spinal multi-point fixation device according to a second embodiment of the present invention. The first fixing plate 1 'in the posterior spinal multi-point fixing device comprises a transverse process fixing part 11', a lower articular process fixing part 12 ', an isthmus 13' and a spinous process fixing part 14 'which are connected into a whole, wherein the spinous process fixing part 14' is fixedly connected with a spinous process D of the posterior spinal by a locking nail 4; after the locking nail 4 is driven into the spinous process D of the posterior of the spine through the spinous process fixing part 14 ', the second locking part 41 of the locking nail 4 is screw-coupled with the spinous process fixing part 14'. In the second embodiment, except that the structure of the first fixing plate 1' is different from the structure of the first fixing plate 1 in the first embodiment, the other structures are the same as those of the posterior spinal multi-point fixing device in the first embodiment, and are not described herein again.
In conclusion, according to the posterior spinal multi-point fixing device, the first fixing plate 1 and the second fixing plate 5 are fixed with the posterior spinal through the locking screws 4 at multiple points, the implant 21 on the pedicle screw 2 penetrates through the first fixing plate and the second fixing plate 5 and then is driven into the pedicle screw from the posterior spinal, and the first locking portion 210 on the implant 21 is in threaded connection with the first fixing plate 1 and the second fixing plate 5, so that the pedicle screw 2 can be stably fixed by driving the pedicle screw 2 into the pedicle of vertebral arch, the pedicle screw 2 does not need to be completely driven into the vertebral body through the pedicle of vertebral arch, the length of the pedicle screw 2 is effectively reduced, the risk that the inner wall of the pedicle of vertebral arch is damaged by the pedicle screw 2 is avoided, and the safety and the convenience of the operation are greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. A posterior spinal multi-point fixing device is characterized by comprising a plurality of first fixing plates for fixing the posterior spinal, a plurality of pedicle screws for locking the first fixing plates and a bendable connecting rod;
the first fixing plate is fixedly connected with the posterior of the spinal column through at least two locking nails, the pedicle screw comprises an implant and a connector which are connected with each other, a first locking part is arranged on the implant, the implant penetrates through the first fixing plate and is implanted into the pedicle of the spinal column, the first locking part is in threaded connection with the first fixing plate, and the connecting rod penetrates through the connector and is locked by the connector;
the first fixing plate comprises a transverse process fixing part, a lower articular process fixing part and an isthmus which are connected into a whole, the transverse process fixing part is fixedly connected with a transverse process of a posterior path of a spine through the locking nail, the lower articular process fixing part is fixedly connected with a lower articular process of a posterior path of the spine through the locking nail, and the pedicle screw penetrates through the isthmus and is implanted into a vertebral pedicle of the spine.
2. The posterior spinal multipoint fixation device of claim 1 wherein the first fixation plate further comprises a hook attached at the transverse process fixation portion.
3. The posterior spinal multipoint fixation device of claim 1 wherein said locking pin has a head end with a second locking portion that is threadably engaged with said transverse process securing portion after said locking pin is driven through said transverse process securing portion into the transverse process of the posterior spinal column and that is threadably engaged with said inferior articular process securing portion after said locking pin is driven through said inferior articular process securing portion into the inferior articular process of the posterior spinal column.
4. The posterior multi-point fixation device of claim 3, wherein the first fixation plate further comprises a spinous process fixation portion integrally connected to the isthmus, the spinous process fixation portion being fixedly connected to the posterior spinous process of the spine by the locking nail; when the locking nail penetrates through the spinous process fixing part and is driven into the spinous process of the posterior spine, the second locking part is in threaded connection with the spinous process fixing part.
5. The posterior multipoint fixation device of claim 4 further comprising a second fixation plate fixedly connected to the sacrum of the posterior spine by at least one of said locking screws, said pedicle screws passing through said second fixation plate and fixedly connected to pedicle screws on the sacrum, and said first locking portion being threadably connected to said second fixation plate.
6. The posterior multi-point fixation device of claim 5, wherein the second fixation plate includes a sacral fixation portion and a sacral isthmus integrally formed therewith, the sacral fixation portion being fixedly connected to the sacral ala of the sacrum by two of the locking pegs, the pedicle screws being implanted through the sacral isthmus into a pedicle of the spine.
7. The posterior spinal multipoint fixation device of claim 6 wherein the connector is swingably and rotatably connected to the head end of the implant.
8. The posterior multi-point spinal fixation device of claim 7 wherein the connector comprises a swinging member and a locking member, the swinging member is connected to the head end of the implant, the connecting rod is inserted into the swinging member, and the locking member is screwed onto the swinging member and can press the connecting rod onto the swinging member.
CN201810710166.0A 2018-06-26 2018-07-02 Spine posterior multi-point fixing device Active CN109009380B (en)

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CN201820994189 2018-06-26

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5507745A (en) * 1994-02-18 1996-04-16 Sofamor, S.N.C. Occipito-cervical osteosynthesis instrumentation
CN201516081U (en) * 2009-05-27 2010-06-30 陈哲 Internal fixing system of lumbar isthmus cleft restoration
CN202136407U (en) * 2011-07-09 2012-02-08 李郁松 Physiological inner fixing device for subtotal resection of single vertebral body of anterior cervical spine
US8298267B2 (en) * 2007-06-05 2012-10-30 Spartek Medical, Inc. Spine implant with a deflection rod system including a deflection limiting shield associated with a bone screw and method
CN103781429A (en) * 2011-06-03 2014-05-07 科斯班公司 Spinal correction system actuators
CN107007339A (en) * 2017-04-17 2017-08-04 中国人民解放军第二军医大学第二附属医院 A kind of Facet Joints tension band fixation device
CN206836952U (en) * 2017-01-17 2018-01-05 倪斌 The lateral mass bracing means of pedicle screw
CN207445023U (en) * 2017-04-18 2018-06-05 中国人民解放军第二军医大学第二附属医院 A kind of lumbar vertebrae coronary sinus retroperfusion connector

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050131406A1 (en) * 2003-12-15 2005-06-16 Archus Orthopedics, Inc. Polyaxial adjustment of facet joint prostheses
US20110087292A1 (en) * 2009-10-14 2011-04-14 K2M, Inc. Occipital fixation assembly, system and method for attaching the same
US9962192B2 (en) * 2016-03-17 2018-05-08 Medos International Sarl Multipoint fixation implants

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5507745A (en) * 1994-02-18 1996-04-16 Sofamor, S.N.C. Occipito-cervical osteosynthesis instrumentation
US8298267B2 (en) * 2007-06-05 2012-10-30 Spartek Medical, Inc. Spine implant with a deflection rod system including a deflection limiting shield associated with a bone screw and method
CN201516081U (en) * 2009-05-27 2010-06-30 陈哲 Internal fixing system of lumbar isthmus cleft restoration
CN103781429A (en) * 2011-06-03 2014-05-07 科斯班公司 Spinal correction system actuators
CN202136407U (en) * 2011-07-09 2012-02-08 李郁松 Physiological inner fixing device for subtotal resection of single vertebral body of anterior cervical spine
CN206836952U (en) * 2017-01-17 2018-01-05 倪斌 The lateral mass bracing means of pedicle screw
CN107007339A (en) * 2017-04-17 2017-08-04 中国人民解放军第二军医大学第二附属医院 A kind of Facet Joints tension band fixation device
CN207445023U (en) * 2017-04-18 2018-06-05 中国人民解放军第二军医大学第二附属医院 A kind of lumbar vertebrae coronary sinus retroperfusion connector

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