CN108056845A - A kind of dypass lumbar intervertebral fusion device - Google Patents
A kind of dypass lumbar intervertebral fusion device Download PDFInfo
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- CN108056845A CN108056845A CN201711350610.4A CN201711350610A CN108056845A CN 108056845 A CN108056845 A CN 108056845A CN 201711350610 A CN201711350610 A CN 201711350610A CN 108056845 A CN108056845 A CN 108056845A
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- face
- fusion device
- dypass
- engaging tooth
- lumbar intervertebral
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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
- A61F2/4455—Joints 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
- A61F2/447—Joints 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 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- 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
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- 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
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- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
-
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- 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
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- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints 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
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- 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
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- A—HUMAN NECESSITIES
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- 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
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- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- 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
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- 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
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- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
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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
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- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30617—Visible markings for adjusting, locating or measuring
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- A—HUMAN NECESSITIES
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- 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
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- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
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- 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
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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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
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- 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
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- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
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- A61F2/02—Prostheses implantable into the body
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- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0008—Fixation appliances for connecting prostheses to the body
- A61F2220/0016—Fixation appliances for connecting prostheses to the body with sharp anchoring protrusions, e.g. barbs, pins, spikes
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Abstract
The invention belongs to orthopaedic implants fields, more particularly to a kind of dypass lumbar intervertebral fusion device, including main body, the main body includes upper surface, lower face, left surface, right flank, front end face and clamping end face and at least one opening grown for bone graft or substitute between the upper surface and the lower face, the upper surface, lower face contact respectively with upper terminal plate of vertebral body, hypocentrum soleplate, and the clamping end face is equipped with the threaded hole and rectangle clamping opening that are connected with instrument.Good fixing effect of the present invention, anticreep performance are more preferable, are bonded more preferably with terminal plate of vertebral body.
Description
Technical field
The present invention relates to a kind of dypass lumbar intervertebral fusion devices.
Background technology
Spinal interbody fusion device upper and lower end face engaging tooth takes symmetric design at present, and simple and beautiful can play anti-off effect.
However, anatomically find the terminal plate of vertebral body hardness adjacent with fusion device upper and lower end face there are significant difference, hypocentrum it is upper
Soleplate hardness is low.If being implanted into the fusion device that engaging tooth takes symmetric design in intervertenral space, the engaging tooth of body lower face can be first
The upper soleplate of tight hypocentrum is stung, and the engaging tooth of body upper surface does not sting the lower soleplate of tight upper centrum, fusion device is in intervertenral space
Fixation only rely on the upper soleplate of hypocentrum, fixed effect is bad.
From the existing design of the prior art, particularly from the dypass intervertebral among U.S. Patent application US7918891 (B1)
Fusion device upper and lower end face engaging tooth is the sawtooth into row pattern, can play the anticreep ability on front-rear direction, be disadvantageous in that：
The microstructure of the terminal plate of vertebral body up and down presentation of engaging tooth occlusion is cellular, if tooth engaged is the sawtooth of strip, engaging tooth is not
It can bite into inside soleplate, anti-offability can be realized most preferably.
Single plane design or the design of single cambered surface are taken in Invasive lumbar fusion device upper and lower end face at present, and one is being carried out to soleplate
After a little processing, certain cooperation can be reached.However, anatomy finds that terminal plate of vertebral body true form more connects compared with plane or cambered surface
Be bordering on basin, the low surrounding in middle part is high, i.e., the small presentation Plain of the soleplate middle body gradient originally contacted with nucleus pulposus, and originally with fibre
Tie up the big presentation mountain range of the soleplate surrounding gradient of ring contact.
The content of the invention
The object of the present invention is to provide a kind of good fixing effect, anticreep performance is more preferable, better side is bonded with terminal plate of vertebral body
Road lumbar intervertebral fusion device.
The technical scheme is that：A kind of dypass lumbar intervertebral fusion device is provided, including main body, the main body includes upper
End face, lower face, left surface, right flank, front end face and clamping end face and between the upper surface and the lower face
At least one opening grown for bone graft or substitute, the upper surface, lower face respectively with upper terminal plate of vertebral body, under
Terminal plate of vertebral body contacts, and the clamping end face is equipped with the threaded hole and rectangle clamping opening that are connected with instrument.
Preferably, the upper surface and the lower face be located at the opening long side both sides be equipped with and it is described opening grow
The isometric engaging tooth in side.
Preferably, the engaging tooth on the upper surface and the lower face is along the long side of respective end face and short side direction Cheng Zhen
Column distribution, the engaging tooth on engaging tooth and the lower face on the upper surface is mutually asymmetric, the engagement on the upper surface
The tooth tooth top gross area is less than the engaging tooth tooth top gross area on the lower face.
Preferably, the engaging tooth number of teeth on the upper surface is less than the engaging tooth number of teeth on the lower face；The upper end
Single engaging tooth tooth top area on face is less than the single engaging tooth tooth top area on the lower face.
Preferably, the tooth form of the engaging tooth is pyramid-like shape, and four inclines of the engaging tooth are the camber line of indent,
Four sides of the engaging tooth are the cambered surface of indent, and the tooth top of the engaging tooth is square-shaped planar.
Preferably, the upper surface and the junction of the front end face, the clamping end face are equipped with and meet terminal plate of vertebral body
The cambered surface of basin shape anatomical structure or plane transition face, the lower face and the front end face, the junction of the clamping end face
It also is provided with the cambered surface of basin shape anatomical structure for meeting terminal plate of vertebral body or plane transition face.
Preferably, four peripheral walls of the opening are equipped with the slot that cross section is circular arc, for increasing bone graft or replacement
Frictional force between four peripheral walls of object and opening.
Preferably, radiation opaque mark is further included, which is used to identify with radioscopic image
Dypass lumbar intervertebral fusion device.
Preferably, the mean level of the sea formation that the upper surface and the lower face are formed can correct the angle of spinal defect
Spend α.
Preferably, the left surface and the right flank are equipped with several circular holes, are equipped with and adjacent circle between the circular hole
The rectangular apertures that hole is connected, the long side of the rectangular apertures are parallel with the mean level of the sea that the upper surface is formed.
Beneficial effects of the present invention：
1st, upper and lower end face engaging tooth takes asymmetric design, reduces the gross area of upper surface engaging tooth tooth top, increases upper end
Soleplate contact surface compression under face engaging tooth and upper centrum, when drive side of tooth for promoting body upper and lower end face, sting tight corresponding centrum
Soleplate, fixed effect of the enhancing fusion device in intervertenral space.
2nd, the circular arc that four inclines of pyramid-like type engaging tooth are changed to be recessed inwardly by straight line, four sides are changed by plane
It for the arc surface being recessed inwardly, effectively bites into the bone hole gap of upper and lower terminal plate of vertebral body, increases the anticreep ability of engaging tooth.
3rd, pyramid-like is top becomes a small square from a bit, and the abrasion of engaging tooth itself is effectively reduced in implantation
With the scratch to soleplate.
4th, fusion device upper and lower end face and soleplate center (soleplate originally with nucleus pulposus contact position) contact position are designed to plane；And
With soleplate surrounding (soleplate originally with fibrous ring contact position) contact position, according to gradient different on the inside of soleplate surrounding, design with
Adaptable plane or cambered surface.The design of this cascaded surface can be realized more preferable with soleplate compared with single cambered surface or plane
Anatomy fitting.
Description of the drawings
Fig. 1 is dypass lumbar intervertebral fusion device axonometric drawing in the present invention；
Fig. 2 is dypass lumbar intervertebral fusion device upper surface view in the present invention；
Fig. 3 is dypass lumbar intervertebral fusion device lower face view in the present invention；
Fig. 4 is dypass lumbar intervertebral fusion device upper surface pyramid-like shape tooth partial enlarged view in the present invention；
Fig. 5 is dypass lumbar intervertebral fusion device lower face pyramid-like shape tooth partial enlarged view in the present invention；
Fig. 6 is the main view in full section of dypass lumbar intervertebral fusion device in the present invention；
Fig. 7 is dypass lumbar intervertebral fusion device in the present invention from left surface along upper surface vertical direction view；
Fig. 8 is dypass lumbar intervertebral fusion device in the present invention from left surface along lower face vertical direction view；
Fig. 9 is dypass lumbar intervertebral fusion device left view in the present invention.
Figure 10 bows view in full section for dypass lumbar intervertebral fusion device in the present invention.
Specific embodiment
The present invention is further detailed in conjunction with the accompanying drawings below：
Refering to Figure 1, dypass lumbar intervertebral fusion device provided in this embodiment, main body is rendered as trapezoidal, the master
Body includes upper surface 10, lower face 11, left surface 12, right flank 13, front end face 14 and clamping end face 15 and on described
At least one opening 4 grown for bone graft or substitute between end face 10 and the lower face 11, the upper surface
10th, lower face 11 contacts respectively with upper terminal plate of vertebral body, hypocentrum soleplate, and 15 center of clamping end face is equipped with threaded hole 70, threaded hole
Opening 4 between 70 and upper surface 10, lower face 11 communicates.There is rectangle clamping opening 71 in clamping end face 15 with 12 junction of left surface.Folder
Holder tool by threaded hole 70 and opening 4 with fusion device can realize and connect that clamping is more steady.
It please referring to Fig.1, shown in Fig. 2, Invasive lumbar fusion device upper surface 10,11 center of lower face are equipped with perforative vertical openings 4,
Bone graft or substitute can be allowed inside to grow.The cross sectional shape of opening 4 is rectangle, and there is rounded corner modification on four vertex.It opens
Four peripheral walls of mouth 4 are equipped with the circular section slot 40 of 2-4 circle uniform depths.
It refers to shown in Fig. 2, Fig. 3, upper surface 10,11 middle part of lower face are equipped with long side direction and short side side along place face
To several pyramid-like shape engaging tooths 2,3 of uniform array, the engaging tooth is located at 4 both sides of the opening and is equipped with engaging tooth
Length and 4 long edge lengths of opening are isometric, and the line number and columns of 2 array distribution of upper surface engaging tooth are all higher than lower face engaging tooth 3
Array distribution line number and columns, the number of teeth of upper surface pyramid-like shape engaging tooth 2 is less than lower face pyramid-like shape tooth 3
The number of teeth.The tooth top area of the single class gold turriform engaging tooth 2 in upper surface is less than or equal to the single pyramid-like shape engagement in lower face
The tooth top area of tooth 3 engages so as to ensure that upper surface class gold turriform engaging tooth 2 pushes up the gross area less than lower face class gold turriform
The 3 tooth top gross area of tooth.
It refers to shown in Fig. 4, Fig. 5, four inclines 20,30 of class gold turriform engaging tooth 2,3 become indent from straight line
Camber line, four sides 21,31 are also become the cambered surface of indent from plane, and tower top 22,32 is also from a little becoming square-shaped planar.
It refers to shown in Fig. 6, the mean level of the sea angle α formed by Invasive lumbar fusion device upper surface 10, lower face 11 has
Help correct spinal defect.
Refer to shown in Fig. 7, Fig. 8, upper surface 10,11 central design of lower face into mean level of the sea, and with front end face 14
It is designed to that the cambered surface of gradient or plane 50,51,52,53 carry out transition with clamping 15 junction of end face so that intervertebral fusion
Device realizes that better anatomy is bonded with terminal plate of vertebral body, and the mechanical support that Invasive lumbar fusion device is subject to is more firm.
It please refers to Fig.1, shown in Fig. 9, the left and right side of Invasive lumbar fusion device is respectively provided with 2-4 circular hole 60, has rectangle between circular hole
Hole 61 communicates.The width of rectangular apertures 61 is about 1-3mm.Circular hole on rectangle right flank is slightly larger compared with the circular hole on left surface.
It please refers to Fig.1 shown in 0, three development pins 80,81,82 Triangle-Profiles at a right angle of Invasive lumbar fusion device, and runs through
The upper and lower end face of fusion device.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the invention as claimed with
Modification should all belong to the covering scope of the claims in the present invention.
Claims (10)
1. a kind of dypass lumbar intervertebral fusion device, including main body, the main body includes upper surface, lower face, left surface, right side
Face, front end face and clamping end face and at least one between the upper surface and the lower face for bone graft or
The opening of substitute growth, which is characterized in that the upper surface, lower face contact respectively with upper terminal plate of vertebral body, hypocentrum soleplate,
The clamping end face is equipped with the threaded hole and rectangle clamping opening that are connected with instrument.
2. dypass lumbar intervertebral fusion device according to claim 1, which is characterized in that the upper surface and the lower face
The engaging tooth isometric with the opening long side is equipped with positioned at the long side both sides of the opening.
3. dypass lumbar intervertebral fusion device according to claim 2, which is characterized in that the upper surface and the lower face
On engaging tooth along long side and the short side direction of respective end face into array distribution, engaging tooth and the lower end on the upper surface
Engaging tooth on face is mutually asymmetric, and the engaging tooth tooth top gross area on the upper surface is less than the engaging tooth tooth on the lower face
Push up the gross area.
4. dypass lumbar intervertebral fusion device according to claim 3, which is characterized in that the engaging tooth tooth on the upper surface
Number is less than the engaging tooth number of teeth on the lower face；Single engaging tooth tooth top area on the upper surface is less than the lower face
On single engaging tooth tooth top area.
5. dypass lumbar intervertebral fusion device according to claim 2, which is characterized in that the tooth form of the engaging tooth is eka-gold
Word turriform, four inclines of the engaging tooth are the camber line of indent, and four sides of the engaging tooth are the cambered surface of indent, described
The tooth top of engaging tooth is square-shaped planar.
6. dypass lumbar intervertebral fusion device according to claim 1, which is characterized in that the upper surface and the front end
Face, the junction of the clamping end face are equipped with and meet the cambered surface of basin shape anatomical structure of terminal plate of vertebral body or plane transition face, institute
It states lower face and the junction of the front end face, the clamping end face and also is provided with the basin shape anatomical structure for meeting terminal plate of vertebral body
Cambered surface or plane transition face.
7. dypass lumbar intervertebral fusion device according to claim 1, which is characterized in that four peripheral walls of the opening are equipped with
Cross section is the slot of circular arc, for the frictional force for increasing bone graft or substitute between four peripheral walls that are open.
8. dypass lumbar intervertebral fusion device according to claim 1, which is characterized in that radiation opaque mark is further included,
The radiation opaque marker configurations are used to identify dypass lumbar intervertebral fusion device with radioscopic image.
9. dypass lumbar intervertebral fusion device according to claim 1, which is characterized in that the upper surface and the lower face
The mean level of the sea formation formed can correct the angle [alpha] of spinal defect.
10. dypass lumbar intervertebral fusion device according to claim 1, which is characterized in that the left surface and the right side
Face is equipped with several circular holes, and the rectangular apertures being connected with adjacent circular holes, the long side of the rectangular apertures are equipped between the circular hole
It is parallel with the mean level of the sea that the upper surface is formed.
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| CN201711350610.4A CN108056845A (en) | 2017-12-15 | 2017-12-15 | A kind of dypass lumbar intervertebral fusion device |
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| CN201711350610.4A CN108056845A (en) | 2017-12-15 | 2017-12-15 | A kind of dypass lumbar intervertebral fusion device |
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Application publication date: 20180522 |