CN200987698Y - Lumbar vertebrae intervertebral fuse - Google Patents

Lumbar vertebrae intervertebral fuse Download PDF

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Publication number
CN200987698Y
CN200987698Y CNU2006200494939U CN200620049493U CN200987698Y CN 200987698 Y CN200987698 Y CN 200987698Y CN U2006200494939 U CNU2006200494939 U CN U2006200494939U CN 200620049493 U CN200620049493 U CN 200620049493U CN 200987698 Y CN200987698 Y CN 200987698Y
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supporting section
vertebral body
support segment
utility
model
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Expired - Lifetime
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CNU2006200494939U
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Chinese (zh)
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赵杰
马辉
连小峰
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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
    • A61F2002/30001—Additional 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 relates to a medical device technology field, and is an anatomic design lumbar vertebrae vertebral body fusion cage which is used for the lumbar vertebrae vertebral body with oblique and implantation in posterior. The utility model is a hollow hexahedron, including a front support segment (1), a back support segment (3) and a medium segment (2) between the front and the back support segment. The upper and lower surfaces (4) contacted by a vertebral body endplate looks like a parallelogram and convex outwards by a round arched shape; The front support segment has smooth surface, and the surfaces of the medium and the back support segment are all provided with a inverted dentate shape convex (5); The middle of the medium segment is hollow; The height of the front support segment is bigger than that of the back support segment, at the same time, the round hole of the back support segment is provided with a inner thread. The four sides of the left and right sides (10) of the fusion cage is convex with a arc shape, and the middle thereof is provided with two big round holes (11); and the eight perigons at the surrounding thereof are round and blunt. The utility model has large bone graft volume and contact area, and the shape of the utility model much more fits the anatomic of the human lumbar vertebrae and the feature of the lumbar vertebrae bimechanics, which is helpful for the bone graft fusion and keeping the normal lumbar vertebrae curve.

Description

A kind of lumbar vertebra Invasive lumbar fusion device
Technical field
This utility model relates to technical field of medical instruments, be a kind of be used for the lumbar vertebra intervertebral fusion can the way of escape fusion device between the anatomical form lumbar vertebra of oblique implantation.
Background technology
Adopt Invasive lumbar fusion device (Cage) row way of escape lumbar vertebra intervertebral fusion (posterior lumbar interbody fusion, PLIF) be one of the basic fundamental of spinal surgery, popularize at home, but the existing fusion device overwhelming majority is an imported product, and with the anatomical features of human body intervertebral space certain gap is arranged.Fusion device is as the core of waist interbody fusion, not only to provide good carrier for the bone grafting thing, effectively strut intervertebral space, avoid the plant bone mass slippage, and should have good biomechanics characteristic and histocompatibility, so that can guarantee bone-graft fusion to greatest extent, therefore, its development and application come into one's own day by day.
" the oblique implanted BAK of a kind of lumbar vertebral posterior (patent No.: ZL200420081725.X) " be a hollow hexahedron, this hexahedron divides three parts, promptly preceding supporting section, back supporting section and the thread segment between the supporting section of front and back.The periphery of the upper and lower surface of each section contact vertebral body is symmetric parallelogram, its acute angle is 60 °, the obtuse angle is 120 °, wherein two surfaces of thread segment are slightly curved to outer lug, be provided with a screw thread and 1-2 big hole about this plane, with chimeric with the vertebral body of destroying soleplate, the left and right sides that thread segment is used to keep disc height is symmetric ladder plane, is provided with some small sircle holes.Before supporting section be positioned at this trapezoid end of going to the bottom, back supporting section is positioned at trapezoid upper base one end, passive about two planes rectangular, whole hexahedro stop symmetrical up and down, left-right symmetric, each plane all has a plurality of apertures.Former and later two end faces of hexahedron respectively have a big hole, and eight round angles all around are blunt fillet.Hexahedron inside is hollow-core construction, in order to hold the bone grafting thing; This utility model can be made with titanium alloy or carbon fibre reinforcement material or the good nontoxic hard material of other histocompatibility.Although this fusion device fusion device more in the past has bigger improvement, but also have following deficiency: 1, the upper and lower surface that terminal plate of vertebral body contacts about preceding supporting section, back supporting section and the intervertebral space is the plane, be not complementary with the dome-shaped depression of soleplate, both caused support force skewness, be unfavorable for the embedding of thread segment screw thread and terminal plate of vertebral body again vertebral body; 2, the set small sircle hole of each face is more up and down, has both influenced the firm degree of fusion device, has reduced the contact area of bone grafting and terminal plate of vertebral body again; 3, the upper and lower surface that contacts with vertebral body of thread segment is only established 1-2 macropore, has limited the bone grafting amount of fusion device and the contact area of bone grafting and soleplate, is unfavorable for merging.
Summary of the invention
The purpose of this utility model provides that a kind of bone grafting capacity is bigger, bone grafting and the soleplate contact area is more, profile meets more that the human lumbar intervertebral space is dissected and the lumbar vertebra Invasive lumbar fusion device of lumbar vertebra physiological curve.
This utility model is a hollow hexahedron, supporting section, back supporting section and interlude three parts between the supporting section of front and back before dividing.The upper and lower surface that contacts with terminal plate of vertebral body is like parallelogram, but integral body is the dome-shaped evagination, is complementary with the dome-shaped depression with terminal plate of vertebral body; Preceding supporting section smooth surface is beneficial to fusion device and implants, and interlude and supporting section surface, back whole process are provided with pawl shape projection, to prevent withdrawing from of fusion device; Hollow out in the middle of the interlude to hold more plant bone mass, has also increased the contact area of plant bone mass and soleplate simultaneously, is beneficial to merge.Preceding supporting section height conforms to the physiology lordosis of lumbar vertebra greater than the back supporting section, and the end face of front and back supporting section is designed to the dome-shaped evagination simultaneously, adapts with the arch edge with vertebral body, has both increased Area of bearing, further increases the bone grafting capacity of intracavity again; Respectively there is a big hole in the end face central authorities of front and back supporting section, and wherein the circular hole of back supporting section end face is provided with female thread, and this screw thread and corresponding apparatus coupling are to make things convenient for controlling and implanting of fusion device.Two sides are the low tetragon in preceding high back about fusion device, its curved evagination in four limits, and 2 big holes are established in the centre; Eight round angles circle all around is blunt, in case fusion device damage peripheral nerve and tissue when implanting.
This utility model is the improvement of above-mentioned " the oblique implanted BAK of a kind of lumbar vertebral posterior ", but it is firmer than it, the contact area of bone grafting capacity and bone grafting and terminal plate of vertebral body is bigger, profile more meets the dissection and the lumbar vertebra biomechanics characteristic of human lumbar intervertebral space, help bone-graft fusion and keep normal lumbar vertebra physiological curve, thereby make the patient obtain excellent curative.
Description of drawings
Fig. 1 is this utility model side perspective structural representation Fig. 1.
Fig. 2 is this utility model side perspective structural representation Fig. 2.
Fig. 3 is this utility model rear perspective structural representation.
The specific embodiment
Now in conjunction with the accompanying drawings and embodiments this utility model is described in detail.
This utility model is a hollow hexahedron, supporting section 1, back supporting section 3 and interlude 2 three parts between the supporting section of front and back before dividing.The upper and lower surface 4 that contacts with terminal plate of vertebral body is like parallelogram, but integral body is the dome-shaped evagination, is complementary with the arc-shaped recess with terminal plate of vertebral body; Preceding supporting section smooth surface is beneficial to fusion device and implants, and interlude and supporting section surface, back whole process are provided with pawl shape projection 5, to prevent withdrawing from of fusion device; The middle hollow out of interlude 2 to hold more plant bone mass, has also increased the contact area of plant bone mass and soleplate simultaneously, is beneficial to merge.The height of preceding supporting section 1 is greater than back supporting section 3, conform to the physiology lordosis of lumbar vertebra, the end face 7 of the end face 6 of simultaneously preceding supporting section and back supporting section is designed to the dome-shaped evagination, adapts with the radiused edges with vertebral body, both increase Area of bearing, further increased the bone grafting capacity of intracavity again; There is a big hole 8 in the end face central authorities of preceding supporting section; There is a big hole 9 in the end face central authorities of back supporting section, and this circular hole is provided with female thread, with corresponding apparatus coupling, make things convenient for controlling and implanting of fusion device.Two sides 10 are the low tetragon in preceding high back about fusion device, but its curved evagination in four limits, 2 big holes 11 are established in the centre; Eight round angles circle all around is blunt, in case fusion device damage peripheral nerve and tissue when implanting.
Embodiment 1:
This utility model is a hollow hexahedron, supporting section 1, back supporting section 3 and interlude 2 three parts between the supporting section of front and back before dividing.The upper and lower surface 4 that contacts with terminal plate of vertebral body is like parallelogram, and acute angle is 60 °, 120 ° at obtuse angle, but the angle circle is blunt; Long 20mm, wide 8mm, the plane is the dome-shaped evagination, and central angle is 60 °, is complementary the middle hollow out of interlude 2, left and right sides hem width 2mm, both sides, front and back hem width 3mm with the arc-shaped recess of terminal plate of vertebral body; Interlude and supporting section surface, back are provided with 10 of bar shaped pawl shape projectioies, tooth depth 1mm; The height of preceding supporting section 1 is 10mm, and the height of back supporting section 3 is 9.0mm, and this situation makes lumbar vertebra that one 3 ° lordosis be arranged; The end face 7 of the end face 6 of preceding supporting section and back supporting section is the dome-shaped evagination, 45 ° at central angle; There are a big hole 8, diameter 3mm in the end face central authorities of preceding supporting section; There is a big hole 9 in the end face central authorities of back supporting section, diameter 4mm, and circular hole is provided with female thread, this screw thread and corresponding apparatus coupling.Two sides 10 are the low tetragon in preceding high back about fusion device, its curved evagination in four limits, and 2 big holes 11 are established in the centre, and diameter is 3mm, two circular hole central point spacing 7mm; Eight round angle circles all around are blunt.
Embodiment 2:
The height of supporting section 1 is 10mm before of the present utility model, and the height of back supporting section 3 is 8.2mm, and this situation makes lumbar vertebra that one 5 ° lordosis be arranged, and all the other are with embodiment 1.
Embodiment 3:
The height of supporting section 1 is 10mm before of the present utility model, and the height of back supporting section 3 is 7.2mm, and this situation makes lumbar vertebra that one 8 ° lordosis be arranged; All the other are with embodiment 1.
Embodiment 4:
Long 22mm of the present utility model, wide 8mm, the height of preceding supporting section 1 are 10mm, and the height of back supporting section 3 is 8.9mm, and this situation makes lumbar vertebra that one 3 ° lordosis be arranged, and all the other are with embodiment 1.
Embodiment 5:
Long 22mm of the present utility model, wide 8mm, the height of preceding supporting section 1 are 10mm, and the height of back supporting section 3 is 8.1mm, and this situation makes lumbar vertebra that one 5 ° lordosis be arranged, and all the other are with embodiment 1.
Embodiment 6:
Long 22mm of the present utility model, wide 8mm, the height of preceding supporting section 1 are 10mm, and the height of back supporting section 3 is 6.9mm, and this situation makes lumbar vertebra that one 8 ° lordosis be arranged, and all the other are with embodiment 1.
Embodiment 7:
Long 20mm of the present utility model, wide 8mm, the height of preceding supporting section 1 are 8mm, and the height of back supporting section 3 is 7.0mm, and this situation makes lumbar vertebra that one 3 ° lordosis be arranged, and all the other are with embodiment 1.
Embodiment 8:
Long 20mm of the present utility model, wide 8mm, the height of preceding supporting section 1 are 8mm, and the height of back supporting section 3 is 6.2mm, and this situation makes lumbar vertebra that one 5 ° lordosis be arranged, and all the other are with embodiment 1.
Embodiment 9:
Long 20mm of the present utility model, wide 8mm, the height of preceding supporting section 1 are 8mm, and the height of back supporting section 3 is 5.2mm, and this situation makes lumbar vertebra that one 8 ° lordosis be arranged, and all the other are with embodiment 1.
Embodiment 10:
Long 20mm of the present utility model, wide 8mm, the height of preceding supporting section 1 are 12mm, and the height of back supporting section 3 is 11.0mm, and this situation makes lumbar vertebra that one 3 ° lordosis be arranged, and all the other are with embodiment 1.
Embodiment 11:
Long 20mm of the present utility model, wide 8mm, the height of preceding supporting section 1 are 12mm, and the height of back supporting section 3 is 10.2mm, and this situation makes lumbar vertebra that one 5 ° lordosis be arranged, and all the other are with embodiment 1.
Embodiment 12:
Long 20mm of the present utility model, wide 8mm, the height of preceding supporting section 1 are 12mm, and the height of back supporting section 3 is 9.2mm, and this situation makes lumbar vertebra that one 8 ° lordosis be arranged, and all the other are with embodiment 1.
This utility model can be made the different size model according to practical situations such as vertebral body diameter, disc height and kurtorachic angles.

Claims (1)

1, a kind of lumbar vertebra Invasive lumbar fusion device, it is a hollow hexahedron, supporting section (1), back supporting section (3) and interlude (2) three parts between the supporting section of front and back before dividing, eight round angle circles all around are blunt, it is characterized in that: the upper and lower surface that contacts with terminal plate of vertebral body (4) is like parallelogram, but integral body is the dome-shaped evagination, is complementary with the dome-shaped depression with terminal plate of vertebral body; Preceding supporting section smooth surface, interlude and supporting section surface, back whole process are provided with pawl shape projection (5), to prevent withdrawing from of fusion device; The middle hollow out of interlude; The height of preceding supporting section conforms to the physiology lordosis of lumbar vertebra greater than the back supporting section, and the end face (7) of the end face (6) of simultaneously preceding supporting section and back supporting section is the dome-shaped evagination, adapts with the arch edge with vertebral body, has further increased Area of bearing and bone grafting amount; Before the end face central authorities of a back supporting section big hole (8) and (9) are arranged respectively, wherein the circular hole (9) of back supporting section is provided with female thread, and controls apparatus accordingly and mates, and makes things convenient for controlling and implanting of fusion device; The curved evagination in four limits of two sides (10) about fusion device, 2 big holes (11) are established in the centre.
CNU2006200494939U 2006-12-26 2006-12-26 Lumbar vertebrae intervertebral fuse Expired - Lifetime CN200987698Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2006200494939U CN200987698Y (en) 2006-12-26 2006-12-26 Lumbar vertebrae intervertebral fuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2006200494939U CN200987698Y (en) 2006-12-26 2006-12-26 Lumbar vertebrae intervertebral fuse

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CN200987698Y true CN200987698Y (en) 2007-12-12

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103610522A (en) * 2013-12-12 2014-03-05 广州聚生生物科技有限公司 Lumbar vertebra posterior approach fusion device
WO2016124045A1 (en) * 2015-02-06 2016-08-11 潘滔 Memory alloy auto-distraction locking type interbody fusion cage and application method therefor
CN107693171A (en) * 2017-10-20 2018-02-16 常州华森医疗器械有限公司 Thoracolumbar disk Invasive lumbar fusion device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103610522A (en) * 2013-12-12 2014-03-05 广州聚生生物科技有限公司 Lumbar vertebra posterior approach fusion device
WO2016124045A1 (en) * 2015-02-06 2016-08-11 潘滔 Memory alloy auto-distraction locking type interbody fusion cage and application method therefor
CN107693171A (en) * 2017-10-20 2018-02-16 常州华森医疗器械有限公司 Thoracolumbar disk Invasive lumbar fusion device

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