CN105853030A - Dilatable cervical vertebral fusion cage - Google Patents

Dilatable cervical vertebral fusion cage Download PDF

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Publication number
CN105853030A
CN105853030A CN201610176679.9A CN201610176679A CN105853030A CN 105853030 A CN105853030 A CN 105853030A CN 201610176679 A CN201610176679 A CN 201610176679A CN 105853030 A CN105853030 A CN 105853030A
Authority
CN
China
Prior art keywords
supporting part
fusion cage
described
end plate
screw
Prior art date
Application number
CN201610176679.9A
Other languages
Chinese (zh)
Inventor
王建华
夏虹
尹庆水
Original Assignee
广州军区广州总医院
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 广州军区广州总医院 filed Critical 广州军区广州总医院
Priority to CN201610176679.9A priority Critical patent/CN105853030A/en
Publication of CN105853030A publication Critical patent/CN105853030A/en

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Classifications

    • 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
    • A61F2/442Intervertebral or spinal discs, e.g. resilient
    • 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
    • A61F2/4455Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • 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
    • A61F2/442Intervertebral or spinal discs, e.g. resilient
    • A61F2002/4445Means for culturing intervertebral disc tissue
    • 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
    • A61F2002/4475Joints for the spine, e.g. vertebrae, spinal discs hollow

Abstract

The invention discloses a dilatable cervical vertebral fusion cage, which comprises an elastic fusion cage main body and a screw, wherein the fusion cage main body comprises an upper end plate supporting portion and a lower end plate supporting portion; the front ends of the upper end plate supporting portion and the lower end plate supporting portion are connected by virtue of a connecting portion; a threaded groove is formed in the bottom surface of the upper end plate supporting portion and in the top surface of the lower end plate supporting portion in an opposite mode; an inner screw thread is internally tapped in the threaded groove; the screw is provided with a conical surface and the conical surface is tapped with an outer screw thread; and the screw can be screwed in the threaded groove, and the upper end plate supporting portion and the lower end plate supporting portion are dilated towards upper and lower side. The fusion cage main body is designed as a deformed structure, and the upper and lower surfaces of the upper end plate supporting portion and the lower end plate supporting portion are parallel in initial implantation; the fusion cage is convenient to operate; and the fusion cage, after being implanted in place, can be dilated by virtue of the screw, so that a required cervical vertebral curvature is kept. The fusion cage disclosed by the invention is small in size, and a function of supporting is developed; and by virtue of a method of implanting the fusion cage main body firstly, and then filling a bone implantation material around the fusion cage main body, the combination of supporting and fusion functions is achieved.

Description

One can strut cervical vertebral fusion cage

Technical field

The present invention is used for field of medical article technology, particularly relates to one and can strut cervical vertebral fusion cage.

Background technology

Anterior cervical decompression operation usually needs the excision of row cervical intervertebral disk and Intervertebral disc fusion and Interal fixation.Traditional modus operandi is the ilium taking bulk, is trimmed to appropriately sized rear implantation pathological interspinal gap, then uses Interal fixation.Owing to this modus operandi needs separately to take otch in the ilium portion of patient, add operation wound, and the complication taking bony site is more.So, this modus operandi is the most gradually replaced by Invasive lumbar fusion device.So-called Invasive lumbar fusion device is a hollow rectangular structure made of titanium alloy or other macromolecular materials.The broken bone or allograph bone, artificial bone etc. taken off in operation can be filled in its hollow part.Fusion device can substitute the effect of iliac, props up and maintains disc height, and play the function that induction bone merges.Being currently used in the product of clinic, fusion device is typically designed as cylinder or the square cylinder of solid shape, and its top and bottom contact with the cartilage endplate of adjacent cervical vertebrae, plays support function.Merge equipment inner hollow, insert autologous spongiosa bone or artificial bone, play self-bone grafting function, promote the Bone Ingrowth fusion device inside in adjacent vertebrae soleplate face or fill bone-grafting material at fusion device space outerpace, inducing adjacent vertebra to form Bony union.

Traditional cervical vertebral fusion cage mostly is solid shape design, is applicable for most of cases.The general intervertebral space size by die trial test operated level of operation, then selects the fusion device of suitable size to implant.But due to the existence of cervical vertebrae physiological prolapse radian, the intervertebral space of cervical vertebra of normal person is not parallel, but there is certain subtended angle, common fusion device is parastate in upper and lower soleplate contact surface mostly, and this is unfavorable for replying cervical vertebra normal lordosis radian.When implementing the cervical intervertebral disk operation of single sections, this impact is the most inconspicuous, and when implementing the cervical fusion surgery of multiple sections, this impact is non-negligible, the fixing fusion device that the application of multiple cervical vertebral spaces is parallel is implemented operation, and doctor is it can be seen that patients with cervical physiologic radian disappears, cervical vertebra becomes straight, and the cervical functional after operation in patients is recovered to be disadvantageous by this.

Summary of the invention

For solving the problems referred to above, the present invention provides the strutted cervical vertebral fusion cage that a kind of cervical vertebra radian can regulate, and fusion device is that top and bottom are parallel under implanting original state, convenient operation, after implantation puts in place, can be opened by device for spreading, thus be maintained the cervical vertebra radian of needs.

The technical solution adopted for the present invention to solve the technical problems is: one can strut cervical vertebral fusion cage, including elastic fusion device body and screw, described fusant body includes soleplate supporting part and lower soleplate supporting part, described upper soleplate supporting part is connected by connecting portion with the front end of lower soleplate supporting part, the bottom surface of described upper soleplate supporting part and the end face of lower soleplate supporting part are provided with just to the thread groove arranged, tapping thread in thread groove, described screw has taper seat, and on described taper seat external threading, in described screw can screw in thread groove and upper soleplate supporting part and lower soleplate supporting part are strutted to upper and lower both sides.

It is further used as the improvement of technical solution of the present invention, the end face of described upper soleplate supporting part and the bottom surface of lower soleplate supporting part and is equipped with increasing resistance tooth.

Being further used as the improvement of technical solution of the present invention, the surface of described fusion device body scribbles HA coating.

Being further used as the improvement of technical solution of the present invention, the front end face of described screw has dome, and rear end face is provided with interior hexagonal counterbore.

Being further used as the improvement of technical solution of the present invention, when described screw does not screws in thread groove, the end face of described upper soleplate supporting part is parallel with the bottom surface of lower soleplate supporting part.

Being further used as the improvement of technical solution of the present invention, described fusion device body is titanium alloy product or polyether-ether-ketone product, and described screw is titanium alloy product.

Being further used as the improvement of technical solution of the present invention, described fusion device body takes the shape of the letter U, and the thickness of described upper soleplate supporting part and lower soleplate supporting part is all higher than the thickness of connecting portion.

Being further used as the improvement of technical solution of the present invention, described thread groove is positioned at soleplate supporting part bottom surface and the middle part of lower soleplate supporting part end face.

Beneficial effects of the present invention: originally can strut cervical vertebral fusion cage, fusion device body uses deformable structure design, upper soleplate supporting part is that top and bottom are parallel with lower soleplate supporting part under implanting original state, convenient operation, after implantation puts in place, thread groove can be screwed in by screw to be strutted, thus maintain the cervical vertebra radian of needs.Fusion device compact of the present invention, plays support function, uses and first implants fusion device body, and the method filling bone-grafting material the most around realizes supporting the combination with fusion function.

Accompanying drawing explanation

The invention will be further described below in conjunction with the accompanying drawings:

Fig. 1 is the embodiment of the present invention the first view axis mapping;

Fig. 2 is the embodiment of the present invention the second view axis mapping;

Fig. 3 is embodiment of the present invention front view.

Detailed description of the invention

Referring to figs. 1 through Fig. 3, that show the concrete structure of the preferred embodiments of the invention.Will be detailed below the construction features of each element of the present invention, and if when being described direction (upper and lower, left and right, before and after), be with the structure shown in Fig. 3 for reference to describing, but the actually used direction of the present invention do not limited to so.

The invention provides one and can strut cervical vertebral fusion cage, including elastic fusion device body 1 and screw 2, described fusant body 1 includes soleplate supporting part 11 and lower soleplate supporting part 12, described upper soleplate supporting part 11 is connected by connecting portion 13 with the front end of lower soleplate supporting part 12, the bottom surface of described upper soleplate supporting part 11 and the end face of lower soleplate supporting part 12 are provided with just to the thread groove 14 arranged, tapping thread in thread groove 14, the front end face of described screw 2 has dome 21, and rear end face is provided with interior hexagonal counterbore 22.Described screw 2 has taper seat, and external threading on described taper seat, in described screw 2 can screw in thread groove 14 and upper soleplate supporting part 11 and lower soleplate supporting part 12 is strutted to upper and lower both sides.Described fusion device body 1 takes the shape of the letter U, and the thickness of described upper soleplate supporting part 11 and lower soleplate supporting part 12 is all higher than the thickness of connecting portion 13, it is ensured that when screw 2 screws in thread groove 14, connecting portion 13 completes deformation requirements.Described thread groove 14 is positioned at soleplate supporting part 11 bottom surface and the middle part of lower soleplate supporting part 12 end face.The end face of described upper soleplate supporting part 11 and the bottom surface of lower soleplate supporting part 12 are equipped with increasing resistance tooth 15.The surface of described fusion device body 1 scribbles HA coating, HA coating i.e. hydroxyapatite, promotes Bone Ingrowth and the fusion at interface.

When described screw 2 does not screws in thread groove 14, the end face of described upper soleplate supporting part 11 is parallel with the bottom surface of lower soleplate supporting part 12, conveniently inserts operation.Fusion device body 1 uses medical titanium alloy or PEEK(polyether-ether-ketone) or the making of other implantable materials, screw 2 uses titanium alloy manufacture.

Operation uses tracheal intubation, general anesthesia.Patient takes dorsal position, and back is padded, head and mandibular bone is swung back as far as possible, it is to avoid high-order cervical operation is blocked by mandibular bone.If by adjust external, it is contemplated that mandibular bone will to upper cervical vertebrae vertically plant nail cause difficulty time, just can be selected for this fixing device.

Operation first excision pathological interspinal dish, does thoroughly decompression to pathological changes gap.Then test disc height with die trial, select the fusion device body 1 of suitable dimension to squeeze into intervertebral space, until steel plate fits tightly with the next vertebral body.Then grains of cancellous bone or artificial bone induced material are implanted in the space around fusion device body 1.Selecting the screw 2 of one piece of suitable size, the thread groove 14 along fusion device body 1 is slowly screwed into, and upper soleplate supporting part 11 and the lower soleplate supporting part 12 of fusion device body 1 is progressively strutted, completes to fix.Anterior plate fixation is finally installed, completes operation.

Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement on the premise of spirit of the present invention, and modification or the replacement of these equivalents are all contained in the application claim limited range.

Claims (8)

1. one kind can strut cervical vertebral fusion cage, it is characterized in that: include fusion device body and the screw of elasticity, described fusant body includes soleplate supporting part and lower soleplate supporting part, described upper soleplate supporting part is connected by connecting portion with the front end of lower soleplate supporting part, the bottom surface of described upper soleplate supporting part and the end face of lower soleplate supporting part are provided with just to the thread groove arranged, tapping thread in thread groove, described screw has taper seat, and on described taper seat external threading, in described screw can screw in thread groove and upper soleplate supporting part and lower soleplate supporting part are strutted to upper and lower both sides.
The most according to claim 1 strut cervical vertebral fusion cage, it is characterised in that: the end face of described upper soleplate supporting part and the bottom surface of lower soleplate supporting part are equipped with increasing resistance tooth.
The most according to claim 1 and 2 strut cervical vertebral fusion cage, it is characterised in that: the surface of described fusion device body scribbles HA coating.
The most according to claim 1 and 2 strut cervical vertebral fusion cage, it is characterised in that: the front end face of described screw has dome, and rear end face is provided with interior hexagonal counterbore.
The most according to claim 1 and 2 strut cervical vertebral fusion cage, it is characterised in that: when described screw does not screws in thread groove, the end face of described upper soleplate supporting part is parallel with the bottom surface of lower soleplate supporting part.
The most according to claim 1 and 2 strut cervical vertebral fusion cage, it is characterised in that: described fusion device body is titanium alloy product or polyether-ether-ketone product, and described screw is titanium alloy product.
The most according to claim 6 strut cervical vertebral fusion cage, it is characterised in that: described fusion device body takes the shape of the letter U, and the thickness of described upper soleplate supporting part and lower soleplate supporting part is all higher than the thickness of connecting portion.
The most according to claim 1 and 2 strut cervical vertebral fusion cage, it is characterised in that: described thread groove is positioned at soleplate supporting part bottom surface and the middle part of lower soleplate supporting part end face.
CN201610176679.9A 2016-03-25 2016-03-25 Dilatable cervical vertebral fusion cage CN105853030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610176679.9A CN105853030A (en) 2016-03-25 2016-03-25 Dilatable cervical vertebral fusion cage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610176679.9A CN105853030A (en) 2016-03-25 2016-03-25 Dilatable cervical vertebral fusion cage

Publications (1)

Publication Number Publication Date
CN105853030A true CN105853030A (en) 2016-08-17

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2140944A1 (en) * 1994-01-26 1995-07-27 Michel Lahille Intersomatic Vertebral Cage
US6117174A (en) * 1998-09-16 2000-09-12 Nolan; Wesley A. Spinal implant device
CN1901855A (en) * 2003-11-21 2007-01-24 Sdgi控股股份有限公司 Expandable spinal implant
DE102005033608A1 (en) * 2005-07-14 2007-01-25 Medicon Eg, Chirurgiemechaniker-Genossenschaft Expanding lumbar implant, for insertion between vertebrae, has a body with legs spread apart by a moving slide
CN201175392Y (en) * 2008-04-15 2009-01-07 张 桦;叶晓健;李家顺 Strutting type intervertebral fusion device and imbedding device thereof
CN202191381U (en) * 2011-07-12 2012-04-18 丁亮华 Adjustable intervertebral fusion device
CN103356310A (en) * 2012-03-28 2013-10-23 北京爱康宜诚医疗器材股份有限公司 Adjustable interbody fusion cage
CN203749649U (en) * 2014-02-21 2014-08-06 吉林医药学院 Inflatable interbody fusion cage
CN204411031U (en) * 2014-12-01 2015-06-24 北京市富乐科技开发有限公司 Stretch-type fusion device
CN204600804U (en) * 2015-04-24 2015-09-02 江苏嘉斯康医疗科技有限公司 Formula that can strut fuses ware
CN105326587A (en) * 2015-12-09 2016-02-17 北京市富乐科技开发有限公司 Opening type interbody fusion cage

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2140944A1 (en) * 1994-01-26 1995-07-27 Michel Lahille Intersomatic Vertebral Cage
US6117174A (en) * 1998-09-16 2000-09-12 Nolan; Wesley A. Spinal implant device
CN1901855A (en) * 2003-11-21 2007-01-24 Sdgi控股股份有限公司 Expandable spinal implant
DE102005033608A1 (en) * 2005-07-14 2007-01-25 Medicon Eg, Chirurgiemechaniker-Genossenschaft Expanding lumbar implant, for insertion between vertebrae, has a body with legs spread apart by a moving slide
CN201175392Y (en) * 2008-04-15 2009-01-07 张 桦;叶晓健;李家顺 Strutting type intervertebral fusion device and imbedding device thereof
CN202191381U (en) * 2011-07-12 2012-04-18 丁亮华 Adjustable intervertebral fusion device
CN103356310A (en) * 2012-03-28 2013-10-23 北京爱康宜诚医疗器材股份有限公司 Adjustable interbody fusion cage
CN203749649U (en) * 2014-02-21 2014-08-06 吉林医药学院 Inflatable interbody fusion cage
CN204411031U (en) * 2014-12-01 2015-06-24 北京市富乐科技开发有限公司 Stretch-type fusion device
CN204600804U (en) * 2015-04-24 2015-09-02 江苏嘉斯康医疗科技有限公司 Formula that can strut fuses ware
CN105326587A (en) * 2015-12-09 2016-02-17 北京市富乐科技开发有限公司 Opening type interbody fusion cage

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Application publication date: 20160817