CN202458786U - Expandable box type interbody fusion cage and embedding device thereof - Google Patents

Expandable box type interbody fusion cage and embedding device thereof Download PDF

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Publication number
CN202458786U
CN202458786U CN 201220104556 CN201220104556U CN202458786U CN 202458786 U CN202458786 U CN 202458786U CN 201220104556 CN201220104556 CN 201220104556 CN 201220104556 U CN201220104556 U CN 201220104556U CN 202458786 U CN202458786 U CN 202458786U
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China
Prior art keywords
hollow
fusion
expander
termination
bearing surface
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Expired - Fee Related
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CN 201220104556
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Chinese (zh)
Inventor
穆尚强
梅继文
孙爽
王宇
王宏伟
黄锐
李坤
高峰
胡守力
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Jilin Medical College
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Jilin Medical College
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (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)
  • Physical Education & Sports Medicine (AREA)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)

Abstract

The utility model relates to an expandable box type interbody fusion cage, which is characterized in that an adjusting end is arranged on one end of a fusion body; an upper expansion body and a lower expansion body with opening ends being in a circular arc shape are arranged on the other end of the fusion body; an outer surface of each expansion body is provided with a bearing surface matched with a curvature of a human body endplate; anti-skid fixing fusion teeth are arranged on the bearing surface; and the bearing surface is provided with corresponding upper and lower bone grafting holes. An embedding device is formed by a hollow embedding handle, a hollow fixing inner rod and an expansion rod adjusting bolt. Compared with a traditional fusion cage, the expandable box type interbody fusion cage is simple and convenient to use, and has reliable performances and an ideal effect of recovering lumbar lordosis; the anti-skid fixing fusion teeth are fixed on endplates of upper and lower centrums, so that higher interface stability and self-stability are realized; and without fixation of pedicle screws, an interbody fusion surgery is minimally invasive, the fusion of the centrums is favored, damage to an original stable structure and the endplates of a lumbar vertebra is smaller when the interbody fusion cage is embedded, and the embedding device is safe to use, and is beneficial to popularization and application in clinic.

Description

Inflatable box-shaped Invasive lumbar fusion device and inserter thereof
Technical field
This utility model relates to the improvement of orthopaedics with the Invasive lumbar fusion device structure, is a kind of inflatable box-shaped Invasive lumbar fusion device and inserter thereof specifically, belongs to medical apparatus and instruments.
Background technology
Lumbar vertebra intervertebral fusion art can be treated diseases such as degenerative lumbar and shakiness effectively, and it can recover intervertebral height, enlarges intervertebral foramina, supports front pillar and increase to merge sections stability.Late 1970s has begun the research of Invasive lumbar fusion device; After be used to treat that lumbar degenerative changes and diseases such as lumbar instability; This Therapeutic Method not only can recover the height of intervertebral, has enlarged intervertebral foramina, has also strengthened the support of front pillar simultaneously; Increased the stability that merges sections, its clinical effectiveness is satisfied, operation wound is little, easy to operate.
In recent years, the Invasive lumbar fusion device of multiple difformity and material is used in clinical, and wherein commonly used have cylindric threaded fusion device and box-shaped fusion device two big classes.Along with the popularization of clinical practice and the progress of theoretical research, find that gradually these fusion devices remain in certain deficiency: when cylindric fusion device is implanted, destroy bigger to original rock-steady structure of lumbar vertebra and soleplate; Box-shaped fusion device self-stability can be relatively poor, needs additional pedicle screw system to fix, and enlarges operation wound, increases surgery cost; Lumbar vertebra physiology lordosis recovers undesirable behind the interbody fusion.
The utility model content
The purpose of this utility model is to above-mentioned deficiency, provides that a kind of structure is unique, clinical manipulation is easy, dependable performance, interface stability and high inflatable box-shaped Invasive lumbar fusion device and the inserter thereof of self-stability.
The technical scheme that realizes this utility model purpose is:
This inflatable box-shaped Invasive lumbar fusion device merges main body by the expandable hollow of nearly cuboid and constitutes, and characteristics are:
An end that merges main body has interconnective adjusting termination, and the other end has opening-like last expander and following expander, and the opening of last expander and following expander has the implantation termination that profile is circular arc; The upper and lower outer surface of last expander and following expander has the weight-bearing surface that matches with human body soleplate curvature respectively, and weight-bearing surface is provided with perpendicular to the anti-skidding fixing and fusing tooth that merges the principal length direction; In the both sides of last expander weight-bearing surface and following expander weight-bearing surface, have the bone grafting hole of upper and lower correspondence; The inboard of regulating the termination be provided with can with the adjusting screwed hole of the adjusting threaded engagement of expansion rod, the outside of regulating the termination is provided with the cross locating slot, the middle part of cross locating slot has the locking screw thread hole;
Described expansion rod is regulated head by truncated cone expansion-head, adjusting screw thread and hexahedron and is formed;
Be provided with cross locking card in the cross locating slot, the middle part of cross locking card has with hexahedron regulates the hexagon lock hole that head matches; Be provided with the locking spiral pin in the locking screw thread hole.
The inserter of inflatable box-shaped Invasive lumbar fusion device; Form by hollow implantation handle, hollow fixing interior bar and expansion rod adjusting screw(rod); One end of the hollow stem of hollow implantation handle has the cross termination that matches with the cross locating slot, and the hollow stem other end is provided with handle; One end of the hollow interior bar of hollow fixing interior bar has the locking screw thread termination that matches with the locking screw thread hole, and the hollow interior bar other end is provided with knob; One end of expansion rod adjusting screw(rod) has with the expansion rod hexahedron regulates the interior six sides adjusting head that head matches, and the other end is provided with rotary handle.
This utility model uniqueness simple in structure; During clinical use; Earlier bar in hollow implantation handle in the inserter and hollow the fixing being regulated the termination with the fusion main body fixes; Expansion rod gets into and goes up between expander and the following expander and send into and regulate the screwed hole from implanting the termination, implants after the lumbar vertebra interior six sides with the expansion rod adjusting screw(rod) and regulates headgear and regulate precession expansion rod on the head at the expansion rod hexahedron, passes through the position of manipulation expansion rod in the adjusting termination; The entering that is expansion rod truncated cone expansion-head capable of using progressively will be gone up expander and following expander expansion, and the pressurization support is between the soleplate of last hypocentrum.After adjusting is expanded and is fit to, withdraw from hollow implantation handle and hollow fixing interior bar, lock card and locking spiral pin locking expansion rod with cross, thereby the fusion device that expands is locked.
Compare with traditional fusion device, this utility model uses easy and simple to handle, dependable performance; Can make the gap of the gap of vertebral body front pillar front end greater than the front pillar rear end, it is desirable to recover lumbar vertebra physiology lordosis, and the anti-skidding fixing and fusing tooth about inciting somebody to action simultaneously on the weight-bearing surface is fixed on the soleplate of hypocentrum; Play the effect that fixedly secures from steady; Have higher interface stability and self-stability, not additional LOCATION OF PEDICLE SCREW FIXATION makes intervertebral fusion operation Wicresoftization; Help the fusion of vertebral body, destroy less to original rock-steady structure of lumbar vertebra and soleplate during implantation.
Have that easy and simple to handle when implanting, dependable performance, intervertebral fusion operation Wicresoftization, interface stability and self-stability are high, the fusion that helps vertebral body, recover lumbar vertebra physiology lordosis desirable, safe in utilization, help advantage such as clinical application.
Description of drawings
Fig. 1 is the structural representation of the fusion main part of a kind of embodiment of this utility model.
Fig. 2-4 is respectively the structural representation of expansion rod among the embodiment, cross locking card and locking spiral pin.
Fig. 5-7 is respectively the structural representation that the inserter hollow core of embodiment is implanted handle, hollow fixing interior bar and expansion rod adjusting screw(rod).
Specific embodiments
This utility model is further described with the embodiment that provides below in conjunction with accompanying drawing.
With reference to Fig. 1-4; This inflatable box-shaped Invasive lumbar fusion device; Expandable hollow fusion main body 1 by nearly cuboid constitutes; An end that merges main body has interconnective adjusting termination 2, and the other end has opening-like last expander 3 and following expander 4, and the opening of last expander and following expander has the implantation termination 5 that profile is circular arc.
The upper and lower outer surface of last expander and following expander has the weight-bearing surface 6 that matches with human body soleplate curvature respectively, and weight-bearing surface is provided with perpendicular to the anti-skidding fixing and fusing tooth 7 that merges the principal length direction.In the both sides of last expander weight-bearing surface and following expander weight-bearing surface, have the bone grafting hole 8 that is the ∞ font of upper and lower correspondence.The inboard of regulating the termination is provided with the adjusting screwed hole 9 that is meshed with the adjusting screw thread 12-2 of expansion rod 12, and the outside of regulating the termination is provided with cross locating slot 10, and the middle part of cross locating slot has locking screw thread hole 11.
Expansion rod 12 is regulated a 12-3 three parts by truncated cone expansion-head 12-1, adjusting screw thread 12-2 and hexahedron and is formed.
Be provided with cross locking card 13 in the cross locating slot, the middle part of cross locking card has with hexahedron regulates the hexagon lock hole 13-1 that head matches, and is provided with locking spiral pin 14 in the locking screw thread hole.
With reference to Fig. 5-7, the inserter of inflatable box-shaped Invasive lumbar fusion device, by hollow implantation handle 15, hollow fixing in bar 16 and expansion rod adjusting screw(rod) 17 form.The end of the hollow stem 15-3 of hollow implantation handle has the cross termination 15-1 that matches with cross locating slot 10, and the hollow stem other end is provided with handle 15-2.The end of the hollow interior bar 16-3 of hollow fixing interior bar has the locking screw thread termination 16-1 that matches with locking screw thread hole 11, and the hollow interior bar other end is provided with knob 16-2.One end of expansion rod adjusting screw(rod) has with the expansion rod hexahedron regulates the interior six sides adjusting 17-1 that a 12-3 matches, and the other end is provided with rotary handle 17-2.
This utility model applicant presses the foregoing description, implements this inflatable box-shaped Invasive lumbar fusion device and inserter thereof, through closed test demonstration on probation, this fusion device and inserter thereof; Easy and simple to handle during implantation, dependable performance, interface stability and self-stability are high; Help the fusion of vertebral body, it is desirable to recover lumbar vertebra physiology lordosis, and operation wound is little; Safe in utilization, behind the clinical expansion, application promise in clinical practice will be arranged.

Claims (2)

1. inflatable box-shaped Invasive lumbar fusion device merges main body by the expandable hollow of nearly cuboid and constitutes, and it is characterized in that:
An end that merges main body has interconnective adjusting termination, and the other end has opening-like last expander and following expander, and the opening of last expander and following expander has the implantation termination that profile is circular arc; The upper and lower outer surface of last expander and following expander has the weight-bearing surface that matches with human body soleplate curvature respectively, and weight-bearing surface is provided with perpendicular to the anti-skidding fixing and fusing tooth that merges the principal length direction; In the both sides of last expander weight-bearing surface and following expander weight-bearing surface, have the bone grafting hole of upper and lower correspondence; The inboard of regulating the termination be provided with can with the adjusting screwed hole of the adjusting threaded engagement of expansion rod, the outside of regulating the termination is provided with the cross locating slot, the middle part of cross locating slot has the locking screw thread hole;
Described expansion rod is regulated head by truncated cone expansion-head, adjusting screw thread and hexahedron and is formed;
Be provided with cross locking card in the cross locating slot, the middle part of cross locking card has with hexahedron regulates the hexagon lock hole that head matches; Be provided with the locking spiral pin in the locking screw thread hole.
2. the inserter of the described inflatable box-shaped Invasive lumbar fusion device of claim 1 is characterized in that:
Inserter is made up of hollow implantation handle, hollow fixing interior bar and expansion rod adjusting screw(rod), and an end of the hollow stem of hollow implantation handle has the cross termination that matches with the cross locating slot, and the hollow stem other end is provided with handle; One end of the hollow interior bar of hollow fixing interior bar has the locking screw thread termination that matches with the locking screw thread hole, and the hollow interior bar other end is provided with knob; One end of expansion rod adjusting screw(rod) has with the expansion rod hexahedron regulates the interior six sides adjusting head that head matches, and the other end is provided with rotary handle.
CN 201220104556 2012-03-14 2012-03-14 Expandable box type interbody fusion cage and embedding device thereof Expired - Fee Related CN202458786U (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103876865A (en) * 2014-02-21 2014-06-25 吉林医药学院 Expandable interbody fusion cage
CN103932824A (en) * 2014-04-16 2014-07-23 王红军 Medical titanium cage
CN103948424A (en) * 2014-03-13 2014-07-30 山东冠龙医疗用品有限公司 Dilated threaded fusion cage
CN104323873A (en) * 2014-11-18 2015-02-04 孙钢 Minimally invasive adjustable interbody fusion cage for spondylolysis
CN107865715A (en) * 2017-12-19 2018-04-03 北京东玥润骐医疗技术发展有限公司 The Invasive lumbar fusion device and its implanted device of variable volume
CN108024860A (en) * 2015-08-25 2018-05-11 Imds公司 Expansible intervertebral implant
CN108852562A (en) * 2017-04-06 2018-11-23 华沙整形外科股份有限公司 The interbody implants and radial type inserter and application method of expansion
CN110873116A (en) * 2019-11-25 2020-03-10 中国重汽集团济南动力有限公司 Thread cross key locking mechanism
WO2020069204A1 (en) * 2018-09-26 2020-04-02 Revivo Medical, Llc Flexible interbody spacer and methods for use
US10945859B2 (en) 2018-01-29 2021-03-16 Amplify Surgical, Inc. Expanding fusion cages
US10993815B2 (en) 2016-10-25 2021-05-04 Imds Llc Methods and instrumentation for intervertebral cage expansion
WO2022132583A1 (en) * 2020-12-18 2022-06-23 Spine Wave, Inc. Expandable tlif device and related insertion and grafting instrumentation

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103876865B (en) * 2014-02-21 2016-04-27 吉林医药学院 Inflatable Invasive lumbar fusion device
CN103876865A (en) * 2014-02-21 2014-06-25 吉林医药学院 Expandable interbody fusion cage
CN103948424A (en) * 2014-03-13 2014-07-30 山东冠龙医疗用品有限公司 Dilated threaded fusion cage
WO2015135374A1 (en) * 2014-03-13 2015-09-17 山东冠龙医疗用品有限公司 Dilated interbody fusion cage
CN103948424B (en) * 2014-03-13 2015-12-16 山东冠龙医疗用品有限公司 A kind of expanding threaded fusion cage
KR101766391B1 (en) 2014-03-13 2017-08-08 산동 관롱 메디컬 유텐실스 컴퍼니 리미티드 Dilated interbody fusion cage
CN103932824A (en) * 2014-04-16 2014-07-23 王红军 Medical titanium cage
CN104323873A (en) * 2014-11-18 2015-02-04 孙钢 Minimally invasive adjustable interbody fusion cage for spondylolysis
CN108024860B (en) * 2015-08-25 2020-02-07 Imds公司 Expandable intervertebral implant
CN108024860A (en) * 2015-08-25 2018-05-11 Imds公司 Expansible intervertebral implant
US10993815B2 (en) 2016-10-25 2021-05-04 Imds Llc Methods and instrumentation for intervertebral cage expansion
CN108852562A (en) * 2017-04-06 2018-11-23 华沙整形外科股份有限公司 The interbody implants and radial type inserter and application method of expansion
CN108852562B (en) * 2017-04-06 2022-08-16 华沙整形外科股份有限公司 Expanded interbody implant and articulating inserter and methods of use
CN107865715A (en) * 2017-12-19 2018-04-03 北京东玥润骐医疗技术发展有限公司 The Invasive lumbar fusion device and its implanted device of variable volume
CN107865715B (en) * 2017-12-19 2024-05-14 北京东玥润骐医疗技术发展有限公司 Variable volume interbody fusion cage and implant device therefor
US10945859B2 (en) 2018-01-29 2021-03-16 Amplify Surgical, Inc. Expanding fusion cages
WO2020069204A1 (en) * 2018-09-26 2020-04-02 Revivo Medical, Llc Flexible interbody spacer and methods for use
US11497614B2 (en) 2018-09-26 2022-11-15 Revivo Medical, Llc Flexible interbody spacer and methods for use
CN110873116A (en) * 2019-11-25 2020-03-10 中国重汽集团济南动力有限公司 Thread cross key locking mechanism
WO2022132583A1 (en) * 2020-12-18 2022-06-23 Spine Wave, Inc. Expandable tlif device and related insertion and grafting instrumentation
US11419735B2 (en) 2020-12-18 2022-08-23 Spine Wave, Inc. Expandable TLIF device and related insertion and grafting instrumentation

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Granted publication date: 20121003

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