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CN202568533U - Adjustable lumbar interbody fusion device - Google Patents

Adjustable lumbar interbody fusion device Download PDF

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Publication number
CN202568533U
CN202568533U CN2012201403059U CN201220140305U CN202568533U CN 202568533 U CN202568533 U CN 202568533U CN 2012201403059 U CN2012201403059 U CN 2012201403059U CN 201220140305 U CN201220140305 U CN 201220140305U CN 202568533 U CN202568533 U CN 202568533U
Authority
CN
China
Prior art keywords
fusion device
cam
supporting body
groove body
adjustable lumbar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2012201403059U
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Chinese (zh)
Inventor
田纪伟
董双海
夏天
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN2012201403059U priority Critical patent/CN202568533U/en
Application granted granted Critical
Publication of CN202568533U publication Critical patent/CN202568533U/en
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Expired - Fee Related legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Neurology (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

The utility model discloses an adjustable lumbar interbody fusion device. The adjustable lumbar interbody fusion device comprises an upper supporting body and a lower supporting body, wherein one end of the upper supporting body and one end of the lower supporting body are mutually pivoted; an upper groove body and a lower groove body are respectively and correspondingly formed in the other end of the upper supporting body and the other end of the lower supporting body; a cam is arranged between the upper groove body and the lower groove body; an inverse tooth is respectively formed on each of the two ends of the cam; and a plurality of tooth grooves corresponding to the inverse teeth are formed in the upper groove body and the lower groove body. When the adjustable lumbar interbody fusion device is used, the cam can be shifted to rotate by an external spanner, so that a front opening angle between the upper supporting body and the lower supporting body is opened, and when the front opening angle is opened to proper angle, the adjustable lumbar interbody fusion device is positioned in the way that the inverse teeth at the two ends of the cam are matched with the tooth grooves.

Description

Fusion device between adjustable lumbar vertebra
Technical field
This utility model relates to a kind of armarium, refers to fusion device between a kind of lumbar vertebra that is used for lumbar spinal fusion especially.
Background technology
Lumbar spinal fusion is the standard art formula of the multiple degenerative lumbar property disease of treatment, and wherein the fusion rate with the intervertebral fusion art is the highest, and curative effect is the most definite.Fusion device between lumbar vertebra (Cage) is the medical implant that is specifically designed to the lumbar vertebra intervertebral fusion, can play the effect of supporting intervertebral space, is widely used clinically.
Fusion device is processed by PEEK material or carbon fibre material between lumbar vertebra commonly used at present, cooperates Fig. 1 said, and there are inherent subtended angle in 3 of fifth lumbar vertebra 2 and sacrals; Be called the lumbosacral angle α of deformity of spine research association (SDSG LSA is hereinafter to be referred as lumbosacral angle), the recovery of lumbosacral angle α is to keep the equilibrated important assurance of spinal column sagittal plane; The hypocentrum surface of bone is also also non-parallel on other interspaces of lumbar vertebrae; There is inherent subtended angle, and varies with each individual, if reset for the intervertebral space that resets of increase binding face in the operation according to the Invasive lumbar fusion device of present application; Lumbosacral angle α or other sections subtended angles are significantly reduced, influence the balance of whole trunk.
Therefore, Invasive lumbar fusion device 1 if can strut the shape that becomes to have the inclination angle, can contact well with the surface of bone of the joint of vertebra up and down, can reduce the risk of fusion device sedimentation and displacement in theory, assists the recovery of normal lumbosacral angle, and possibly increase the success rate of fusion.And strut the bone grafting device between the various lumbar vertebras that also require the individuation adjustable-angle with the degenerative lumbar property disease or the wound of deformity of spine.
The utility model content
The technical problem that this utility model will solve is, provides between a kind of lumbar vertebra of adjustable angle and struts the bone grafting device, with intrinsic angle and the orthopedic needs of lumbar vertebra that adapt to a lumbar vertebra sections intervertebral space.
For solving the problems of the technologies described above; The utility model discloses fusion device between a kind of adjustable lumbar vertebra; It is characterized in that fusion device comprises a supporter and a lower support on one between said lumbar vertebra; The said supporter of going up articulates with said lower support one end each other, said on a corresponding respectively upper groove body and the lower groove of being formed with of the other end of supporter and lower support, be provided with a cam between said upper groove body and said lower groove; Said cam two ends form a pawl respectively, and the corresponding said pawl with said lower groove of said upper groove body is formed with a plurality of teeth groove respectively.
The further improvement of this utility model is that said cam middle part is formed with the structure of pulling of a cooperation external key.
Fusion device can be pulled this cam through an external key in use and is rotated between this adjustable lumbar vertebra, thus the anterior subtended angle of regulating between the upper and lower supporter open, when opening to proper angle, the pawl through the cam two ends cooperates teeth groove to position.
Description of drawings
Fig. 1 is the application sketch map of fusion device between existing lumbar vertebra.
Fig. 2 is a fusion device side portion structure sketch map between this utility model lumbar vertebra.
Fig. 3 is a fusion device softened state side portion structure sketch map not between this utility model lumbar vertebra.
Fig. 4 is the end face structure sketch map of fusion device softened state between this utility model lumbar vertebra.
The specific embodiment
Embodiment to this utility model elaborates below in conjunction with accompanying drawing, and present embodiment is a prerequisite with this utility model technical scheme, provided detailed embodiment and concrete operating process, but the protection domain of this utility model is not limited to following embodiment.
Consult shown in Figure 2; Fusion device 4 mainly is made up of a supporter 40 on one and a lower support 50 between the adjustable lumbar vertebra of this utility model, and the lateral surface of wherein going up supporter 40 is provided with positioning tooth 43, and the lateral surface of lower support 50 is provided with down positioning tooth 53; Last supporter 40 articulates with an end of lower support 50 each other; A corresponding respectively upper groove body 41 and the lower groove 51 of being formed with of the other end of last supporter 40 and lower support 50 is provided with a cam 60 at upper groove body 41 and 51 of lower grooves, cooperates Fig. 3, shown in 4; The two ends of cam 60 form a pawl 61 respectively; And the middle part of cam 60 is formed with the structure of pulling of a cooperation external key, and it can be with cross recess 62 that as shown in Figure 4 this pulled structure, and upper groove body 41 is formed with teeth groove 42,52 respectively with lower groove 51 corresponding said pawls 61.
When fusion device 4 uses between the adjustable lumbar vertebra of this utility model; Pulling cam 60 through an external key is rotated; Thereby regulate upper and lower supporter 41, the anterior subtended angle between 51 is opened; When opening to proper angle, the pawl 61 through cam 60 two ends cooperates teeth groove 42,52 to position, and accomplishes up and down the surface of bone of vertebra joint through last positioning tooth 43 and following positioning tooth 53 and locate.
Between such adjustable lumbar vertebra the surface of bone of fusion device 4 and the joint of vertebra up and down contact fusion device between the lumbar vertebra that is better than present application, can reduce the risk of fusion device sedimentation and displacement in theory, assist the recovery of normal lumbosacral angle, possibly increase the success rate of fusion.And can assist the sagittal plane of degenerative lumbar property disease and lumbar vertebra wound orthopedic, good prospects for application is arranged.

Claims (2)

1. fusion device between an adjustable lumbar vertebra; It is characterized in that fusion device comprises a supporter and a lower support on one between said lumbar vertebra; Said upward supporter and said lower support one end articulate each other; A said corresponding respectively upper groove body and the lower groove of being formed with of the other end of going up supporter and lower support; Be provided with a cam between said upper groove body and said lower groove, said cam two ends form a pawl respectively, and the corresponding said pawl with said lower groove of said upper groove body is formed with a plurality of teeth groove respectively.
2. fusion device between adjustable lumbar vertebra according to claim 1, it is characterized in that said cam middle part be formed with one cooperate external key the structure of pulling.
CN2012201403059U 2012-04-05 2012-04-05 Adjustable lumbar interbody fusion device Expired - Fee Related CN202568533U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012201403059U CN202568533U (en) 2012-04-05 2012-04-05 Adjustable lumbar interbody fusion device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012201403059U CN202568533U (en) 2012-04-05 2012-04-05 Adjustable lumbar interbody fusion device

Publications (1)

Publication Number Publication Date
CN202568533U true CN202568533U (en) 2012-12-05

Family

ID=47237994

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012201403059U Expired - Fee Related CN202568533U (en) 2012-04-05 2012-04-05 Adjustable lumbar interbody fusion device

Country Status (1)

Country Link
CN (1) CN202568533U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105496613A (en) * 2015-12-29 2016-04-20 四川大学华西医院 Cervical vertebra transboundary intervertebral height maintaining device
CN109481100A (en) * 2017-09-13 2019-03-19 医景通(北京)科技发展有限公司 A kind of fusion device
US11701240B2 (en) 2021-02-19 2023-07-18 Loubert S. Suddaby Expandable intervertebral fusion implant
CN119791919A (en) * 2025-03-13 2025-04-11 昆明医科大学第一附属医院(云南省皮肤病医院) Minimally invasive combined intervertebral fusion device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105496613A (en) * 2015-12-29 2016-04-20 四川大学华西医院 Cervical vertebra transboundary intervertebral height maintaining device
CN109481100A (en) * 2017-09-13 2019-03-19 医景通(北京)科技发展有限公司 A kind of fusion device
CN109481100B (en) * 2017-09-13 2024-06-04 医景通(北京)科技发展有限公司 Fusion device
US11701240B2 (en) 2021-02-19 2023-07-18 Loubert S. Suddaby Expandable intervertebral fusion implant
CN119791919A (en) * 2025-03-13 2025-04-11 昆明医科大学第一附属医院(云南省皮肤病医院) Minimally invasive combined intervertebral fusion device

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121205

Termination date: 20140405