CN108852561B - Split artificial vertebral body and application method thereof - Google Patents
Split artificial vertebral body and application method thereof Download PDFInfo
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- CN108852561B CN108852561B CN201810243529.4A CN201810243529A CN108852561B CN 108852561 B CN108852561 B CN 108852561B CN 201810243529 A CN201810243529 A CN 201810243529A CN 108852561 B CN108852561 B CN 108852561B
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- 238000000034 method Methods 0.000 title abstract description 9
- 230000002146 bilateral effect Effects 0.000 claims abstract description 3
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000010146 3D printing Methods 0.000 abstract description 5
- 210000000988 bone and bone Anatomy 0.000 abstract description 5
- 210000003484 anatomy Anatomy 0.000 abstract description 4
- 238000002513 implantation Methods 0.000 description 17
- 208000010392 Bone Fractures Diseases 0.000 description 9
- 208000006670 Multiple fractures Diseases 0.000 description 9
- 210000000278 spinal cord Anatomy 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 210000005036 nerve Anatomy 0.000 description 4
- 239000007943 implant Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 208000002847 Surgical Wound Diseases 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000008467 tissue growth Effects 0.000 description 2
- 206010041541 Spinal compression fracture Diseases 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000944 nerve tissue Anatomy 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 208000037959 spinal tumor Diseases 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
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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 invention discloses a split type artificial vertebral body and a use method thereof, wherein the split type artificial vertebral body comprises a first supporting block and a second supporting block which are connected left and right, the first supporting block comprises a first side face, a second side face and a third side face, the second supporting block comprises a fourth side face, a fifth side face and a sixth side face, the first supporting block and the second supporting block are attached to the fifth side face through the second side face, a first connecting part is arranged on the second side face, a second connecting part matched with the first connecting part is arranged on the fifth side face, and the second side face and the fifth side face deviate from a central axis of the split type artificial vertebral body in a bilateral symmetry mode. The split type artificial vertebral body is formed by 3D printing, consists of a strong internal frame structure, a polyhedron with high porosity and an upper and lower longitudinal cavity bone grafting channel, has light weight and high strength, and accords with human anatomy structure, biomechanics and bone tissue ingrowth.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a split type artificial vertebral body and a use method thereof.
Background
The treatment method of the patient with serious damage to the vertebral body caused by the spinal tumor, the serious burst fracture of the vertebral column and the like is mainly total vertebroplasty, the stability of the spinal biomechanics is seriously damaged by the operation, and the spine stability is required to be rebuilt for all people who perform the total vertebroplasty, namely, the artificial vertebral body is implanted at the position of the excised vertebral body, the traditional substitute material is not designed for the individuation of the patient, the 3D printing artificial vertebral body has individuation characteristics, the characteristics of pathological changes of the patient are more met, the traditional artificial vertebral body is large in general volume, the operation incision is large, meanwhile, a plurality of nerve tissues are arranged on the vertebral column, the large-volume artificial vertebral body is not easy to be put into a human body, nerves can be damaged by a little careless in the operation process, and irreversible damage is caused to the patient.
Disclosure of Invention
The invention aims to provide a split type artificial vertebral body and a using method thereof, wherein the split type artificial vertebral body is formed by 3D printing, accords with human anatomy structure, biomechanics and bone tissue ingrowth, has small incision in operation, and is easy to put into a human body without damaging nerves.
The technical scheme is as follows:
the split type artificial vertebral body comprises a first supporting block and a second supporting block which are connected left and right, wherein the first supporting block comprises a first side face, a second side face and a third side face, the second supporting block comprises a fourth side face, a fifth side face and a sixth side face, the first supporting block and the second supporting block are attached to the fifth side face through the second side face, the first side face is in butt joint with the fourth side face to form a continuous arc-shaped face, the third side face is in butt joint with the sixth side face to form a U-shaped concave face, a first connecting portion is arranged on the second side face, a second connecting portion matched with the first connecting portion is arranged on the fifth side face, the second side face is deviated from the central axis of the split type artificial vertebral body, and the central axis is located on the first supporting block.
The first connecting portion comprises a first connecting hole, the second connecting portion comprises a second connecting hole, the first connecting hole is obliquely arranged relative to the second side face, the second connecting hole is obliquely arranged relative to the fifth side face, the second connecting hole penetrates through the fourth side face, and the first connecting hole is communicated with the second connecting hole.
The first connecting holes and the second connecting holes are four, the four first connecting holes are respectively arranged on the upper side and the lower side of the second side surface, and the four second connecting holes are respectively arranged on the upper side and the lower side of the fifth side surface.
The vertical direction of second side is equipped with the first reference column of vertical setting, the corresponding position of fifth side be equipped with first reference column assorted first constant head tank, the vertical direction of second side still is equipped with the second reference column of vertical setting, the corresponding position of fifth side be equipped with second reference column assorted second constant head tank, first reference column with the second reference column protrusion in the second side.
The horizontal direction of second side is equipped with relatively the third reference column that the axis slope set up, correspond the position on the fifth side be equipped with third reference column assorted third constant head tank, the third reference column protrusion in the second side, the one end of third reference column locate on the third side and with third side parallel and level, the horizontal direction of fifth side be equipped with relatively the fourth reference column that the axis slope set up, correspond the position on the second side be equipped with fourth reference column assorted fourth constant head tank, the one end of fourth reference column locate on the fourth side and with fourth side parallel and level, the fourth reference column protrusion in the fifth side.
The number of the third positioning columns and the fourth positioning columns is at least two, and the third positioning columns and the fourth positioning columns are distributed in a staggered mode.
The second side face, the third side face, the fifth side face and the sixth side face are plate-shaped structures penetrating through the upper surface and the lower surface of the split type artificial vertebral body, filling bodies are arranged on the first side face and between the first side face and the second side face and between the first side face and the third side face, filling bodies are arranged in the middle of the fourth side face, on the upper and lower sides of the fourth side face and between the fourth side face and the fifth side face and between the fourth side face and the sixth side face, the filling bodies are composed of micropores, and the micropores also have the upper surface and the lower surface.
The U-shaped concave surface is concave towards the middle part of the split type artificial vertebral body, and the U-shaped concave surface vertically penetrates through the split type artificial vertebral body.
The third side is provided with a first nail hole, the sixth side is provided with a second nail hole, the first nail hole and the second nail hole are respectively arranged at two side edges of the U-shaped concave surface, and the bottom of the second nail hole penetrates through the fifth side and then is arranged on the second side.
The first support block is provided with an implant cavity which is vertically communicated with the inside of the filling body, and the bottom of the first connecting hole protrudes towards the inside of the implant cavity.
It should be noted that:
the invention also discloses a using method of the split type artificial vertebral body, which comprises the following steps:
pushing apart two vertebrae on the spine;
implanting the first support block between two vertebrae along a first side of the spinal column, the first support block bypassing the spinal cord and the nerves, and extending the second side of the first support block to a second side of the spinal cord after implantation;
implanting a second support block along a second side of the spinal column and conforming the second side to the fifth side;
implanting connecting pieces in the first connecting part and the second connecting part, and connecting the first connecting part and the second connecting part so as to fixedly connect the first supporting block and the second supporting block;
wherein the first side is opposite to the second side.
The connecting piece is inclined into the first supporting block and the second supporting block and connects the first supporting block with the second supporting block.
The advantages and principles of the invention are described below:
1. the split type artificial vertebral body is formed by 3D printing, the split type artificial vertebral body is more in line with human anatomy, biomechanics and bone tissue growth, the split type artificial vertebral body is divided into a first supporting block and a second supporting block which are attached to each other, when the split type artificial vertebral body is implanted into a human body, the first supporting block can be implanted first and then the second supporting block can be implanted, or the second supporting block can be implanted first and then the first supporting block can be implanted, the volume of the split type artificial vertebral body during implantation is reduced, the operation incision of a patient is reduced, the faces attached to the first supporting block and the second supporting block deviate from the left and right symmetrical central axis of the split type artificial vertebral body, and the split type artificial vertebral body is convenient for arranging an implantation cavity for placing broken bones on the first supporting block, so that the broken bones are placed before the split type artificial vertebral body is implanted.
2. The U-shaped concave surface that third side and sixth side formed, it is convenient for the spinal cord at backbone rear of implanting the back to pass through, and the both sides limit of U-shaped concave surface has certain guard action to the spinal cord, simultaneously, U concave surface and arcwall face design, is difficult for damaging the nerve when making split type artificial vertebral body implant.
3. The first connecting hole and the second connecting hole are used for fixing the first supporting block and the second supporting block, and the first connecting hole and the second connecting hole which are obliquely arranged are convenient for driving fasteners such as screws to connect and fix after the first supporting block and the second supporting block are implanted, so that the surgical incision does not need to be enlarged.
4. Four first connecting holes and four second connecting holes are formed, the first supporting block and the second supporting block are attached tightly, and the first supporting block and the second supporting block are connected firmly.
5. The first locating column, the second locating column, the first locating groove and the second locating groove are vertically arranged, so that the first supporting block and the second supporting block can be accurately located when being implanted, the first locating column and the second locating column which are protruded are arranged on the first supporting block, and more space is saved to set an implantation cavity.
6. The third locating column, the fourth locating column, the third locating groove and the fourth locating groove which are arranged in the horizontal direction enable the first supporting block and the second supporting block to be accurately located in the horizontal direction.
7. After the split artificial vertebral body is implanted into a human body, the split artificial vertebral body is fixed on the spine by nailing screws into the middle of the left side and the right side of the U-shaped structure.
8. The implantation cavity is used for placing broken bones, and simultaneously, the vertebrae at the upper side and the lower side of the split type artificial vertebral body enter through the upper part and the lower part of the implantation cavity, so that the split type artificial vertebral body and the vertebrae are fused conveniently.
9. The split type artificial vertebral body is supported by the side plate-shaped structures of the second side face, the third side face, the fifth side face and the sixth side face, micropores formed in the split type artificial vertebral body have a certain buffering effect when the split type artificial vertebral body is extruded, the split type artificial vertebral body cannot be damaged due to overlarge impact force, the micropores in the upper surface of the vertebra accessible filling body located above the split type artificial vertebral body enter the split type artificial vertebral body, the lower surface of the vertebra accessible filling body located below the split type artificial vertebral body increases the fusion contact area of the split type artificial vertebral body and the vertebrae, and meanwhile, the micropores in the upper surface and the lower surface of the filling body have a certain anti-skidding effect, so that displacement and dislocation cannot occur between the implanted split type artificial vertebral body and the vertebrae above and below due to movement.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a top view of an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of a first support block according to an embodiment of the present invention;
FIG. 4 is a top view of a first support block according to an embodiment of the invention;
FIG. 5 is a schematic view of the structure of a second support block according to an embodiment of the present invention;
fig. 6 is a top view of a second support block according to an embodiment of the present invention.
Reference numerals illustrate:
10. a first support block; 20. a second support block; 11. a first side; 12. a second side; 13. a third side; 21. a fourth side; 22. a fifth side; 26. a sixth side; 121. a first connection hole; 221. a second connection hole; 122. a first positioning column; 222. a first positioning groove; 30. implanting the cavity; 123. a second positioning column; 124. a third positioning column; 224. a third positioning groove; 225. a fourth positioning column; 125. a fourth positioning groove; 131. a first nail hole; 231. a second nail hole.
Detailed Description
The following describes embodiments of the present invention in detail.
As shown in fig. 1, the embodiment discloses a split type artificial vertebral body, which comprises a first supporting block 10 and a second supporting block 20 which are connected left and right, as shown in fig. 4, the first supporting block 10 comprises a first side 11, a second side 12 and a third side 13, as shown in fig. 6, the second supporting block 20 comprises a fourth side 21, a fifth side 22 and a sixth side 23, the first supporting block 10 and the second supporting block 20 are attached through the second side 12 and the fifth side 22, the second side 12 and the fifth side 22 deviate from the central axis of the split type artificial vertebral body, and the central axis of the split type artificial vertebral body is arranged on the first supporting block 10.
In this embodiment, as shown in fig. 1, the second side 12, the third side 13, the fifth side 22 and the sixth side 23 are plate-shaped structures penetrating the upper surface and the lower surface of the split artificial vertebral body, a filling body is disposed on the first side 11 and between the first side 12 and the third side, a filling body is disposed in the middle of the fourth side 21, between the upper and lower sides of the fourth side 21 and between the fourth side 21 and the fifth side 22 and the sixth side 23, the filling body is composed of micropores, the micropores also have the upper surface and the lower surface, as shown in fig. 2, the filling body of the first support block 10 is internally provided with an implantation cavity 30 penetrating up and down, the implantation cavity 30 is used for implanting broken bones, before the first support block 10 is implanted into a human body, broken bones taken out from the human body can be firstly placed in the implantation cavity 30, and after the split artificial vertebral body is implanted into the human body, the vertebrae on the upper side and the lower side of the split artificial vertebral body are introduced through the upper and lower sides of the implantation cavity 30, and are connected and fused with the broken bones in the implantation cavity 30.
In order to connect the first support block 10 and the second support block 20, in this embodiment, a first connection portion is provided on the second side 12, a second connection portion matching the first connection portion is provided on the fifth side 22, as shown in fig. 3, the first connection portion includes a first connection hole 121, as shown in fig. 5, the second connection portion includes a second connection hole 221, the bottom of the first connection hole 121 protrudes toward the inside of the implantation cavity 30, the first connection hole 121 is disposed obliquely with respect to the second side 12, the second connection hole 221 is disposed obliquely with respect to the fifth side 22, and the first connection hole 121 communicates with the second connection hole 221. In the present embodiment, four first connection holes 121 and four second connection holes 221 are provided, the four first connection holes 121 are respectively provided on the upper and lower sides of the second side surface 12, the four second connection holes 221 are respectively provided on the upper and lower sides of the fifth side surface 22 corresponding to the four first connection holes 121, and the four second connection holes 221 penetrate through the fourth side surface 21.
In order to better position the first support block 10 and the second support block 20 when being connected, a first positioning column 122 which is vertically arranged is arranged on the vertical direction of the second side surface 12, the first positioning column 122 protrudes out of the second side surface 12, a first positioning groove 222 which is matched with the first positioning column 122 is arranged at a corresponding position of the fifth side surface 22, the first positioning column 122 vertically penetrates through the second side surface 12, a second positioning column 123 is also arranged on the vertical direction of the second side surface 12, in the embodiment, two second positioning columns 123 are respectively arranged on the upper side and the lower side of the second side surface 12, a second positioning groove 223 is arranged at a corresponding position on the fifth side surface 22, the second positioning groove 223 is matched with the second positioning column 123, and the second positioning column 123 protrudes out of the second side surface 12. In order to realize the accurate positioning of the first support block 10 and the second support block 20 in the horizontal direction of the second side 12, a third positioning column 124 which is obliquely arranged relative to the central axis of the split type artificial vertebral body is arranged in the horizontal direction of the second side 12, the third positioning column 124 also protrudes out of the second side 12, one end of the third positioning column 124 is arranged on the third side 13 and is flush with the third side 13, a third positioning groove 224 which is matched with the third positioning column 124 is arranged at the corresponding position of the fifth side 22, a fourth positioning column 225 which is obliquely arranged relative to the central axis of the split type artificial vertebral body is arranged in the horizontal direction of the fifth side 22, a fourth positioning groove 125 which is matched with the fourth positioning column 224 is arranged at the corresponding position of the second side 12, the fourth positioning column 224 protrudes out of the fifth side 22, one end of the fourth positioning column 224 is arranged on the fourth side 11 and is flush with the fourth side 11, in this embodiment, the third positioning column 124 and the fourth positioning column 225 are arranged two, and the third positioning column 124 and the fourth positioning column 225 are distributed in a staggered manner.
As shown in fig. 1, after the first support block 10 and the second support block 20 are attached, the first side 11 and the fourth side 21 are abutted, the first side 11 and the fourth side 21 form a continuous arc surface, the third side 13 and the sixth side 23 are abutted, the third side 13 and the sixth side 23 form a U-shaped concave surface, the surface of the U-shaped concave surface is smooth, the U-shaped concave surface is concave towards the middle of the split artificial vertebral body, and the U-shaped concave surface vertically penetrates through the split artificial vertebral body.
In order to connect and fix the split artificial vertebral body and the vertebrae, as shown in fig. 1, a first nail hole 131 is provided on the third side 13, a second nail hole 231 is provided on the sixth side 23, the first nail hole 131 and the second nail hole 231 are respectively disposed at two sides of the U-shaped concave surface, wherein the bottom of the second nail hole 231 penetrates through the fifth side 22 and is disposed on the second side 12, and after the split artificial vertebral body is implanted into a human body, a bolt or a screw can be driven into the nail hole to be equal to the vertebrae for fixing.
The application method of the split type artificial vertebral body comprises the following steps:
pushing apart two vertebrae on the spine;
implanting the first support block 10 between two vertebrae along a first side of the spine, wherein the second side 12 extends to a second side of the spine after the first support block 10 is implanted due to the fact that the second side 12 deviates from a central axis of bilateral symmetry of the split artificial vertebral body, and the direction of the first side is opposite to that of the second side;
implanting a second support block 20 along a second side of the spinal cord and conforming the second side 12 to the fifth side 22;
the second connecting hole 221 of the second connecting portion 123 is implanted with a connecting member, and the first connecting hole 121 of the first connecting portion and the second connecting hole 221 of the second connecting portion are connected to connect the first support block 10 and the second support block 20, and since the first connecting hole 121 is inclined with respect to the second side 12 and the second connecting hole 221 is inclined with respect to the fifth side 21 and the fourth side 22, the connecting member is inclined into the first support block and the second support block.
The advantages of this embodiment are as follows:
1. the split type artificial vertebral body is formed by 3D printing, and is more in line with human anatomy, biomechanics and bone tissue growth, the split type artificial vertebral body is divided into a first supporting block 10 and a second supporting block 20 which are attached to each other left and right, when the split type artificial vertebral body is implanted into a human body, the first supporting block 10 can be implanted into the second supporting block 20 first, or the second supporting block 20 can be implanted into the first supporting block 10 first, the volume of the split type artificial vertebral body when the split type artificial vertebral body is implanted is reduced, the operation incision of a patient is reduced, the attached surfaces of the first supporting block 10 and the second supporting block 20 deviate from the central axis of the split type artificial vertebral body, and the split type artificial vertebral body is convenient for arranging an implantation cavity 30 for placing broken bones on the first supporting block 10, so that the broken bones are placed before the split type artificial vertebral body is implanted.
2. The U-shaped concave surface formed by the third side surface 13 and the sixth side surface 23 is convenient for the spinal cord at the rear of the spine to pass through after implantation, and both side edges of the U-shaped concave surface have a certain protection effect on the spinal cord.
3. The first connecting hole 121 and the second connecting hole 221 are used for fixing the first support block 10 and the second support block 20, and the first connecting hole 121 and the second connecting hole 221 are obliquely arranged, so that after the first support block 10 and the second support block 20 are implanted, fasteners such as screws are conveniently driven to connect and fix the first support block 10 and the second support block 20, and the surgical incision is not required to be enlarged.
4. Four first connecting holes 121 and second connecting holes 221 are formed to attach the first support block 10 and the second support block 20 more tightly, so that the first support block 10 and the second support block 20 are connected more firmly.
5. The first positioning column 122, the second positioning column 123, the first positioning groove 222 and the second positioning groove 223 are vertically arranged, so that the first supporting block 10 and the second supporting block 20 can be accurately positioned in the vertical direction when being implanted, the first positioning column 122 and the second positioning column 123 which are protruded are arranged on the first supporting block 10, and more space is saved for arranging the implantation cavity 30.
6. The third positioning column 124, the fourth positioning column 224, the third positioning groove 225 and the fourth positioning groove 125 which are arranged in the horizontal direction enable the first supporting block 10 and the second supporting block 20 to be accurately positioned in the horizontal direction.
7. After the split artificial vertebral body is implanted into a human body, the split artificial vertebral body is fixed on the spine by nailing screws into the middle of the left side and the right side of the U-shaped structure.
8. The implantation cavity 30 is used for placing broken bones, and simultaneously, the vertebrae at the upper side and the lower side of the split type artificial vertebral body enter through the upper part and the lower part of the implantation cavity, so that the split type artificial vertebral body and the vertebrae are fused conveniently.
9. The side plate-shaped structures of the second side surface 12, the third side surface 13, the fifth side surface 22 and the sixth side surface 23 provide support for the split type artificial vertebral body, micropores arranged on the split type artificial vertebral body have a certain buffer effect when the split type artificial vertebral body is extruded, so that the split type artificial vertebral body is not damaged due to excessive impact force, the vertebrae above the artificial vertebral body can enter the split type artificial vertebral body through the micropores on the upper surface of the filling body, the vertebrae below the artificial vertebral body can enter the split type artificial vertebral body through the lower surface of the filling body, the fusion contact area between the split type artificial vertebral body and the vertebrae is increased, and meanwhile, the micropores on the upper surface and the lower surface of the filling body have a certain anti-slip effect, so that the implanted split type artificial vertebral body and the vertebrae above and below cannot shift and misplacement due to movement.
The foregoing is merely exemplary embodiments of the present invention, and is not intended to limit the scope of the present invention; any substitutions and modifications made without departing from the spirit of the invention are within the scope of the invention.
Claims (6)
1. The split type artificial vertebral body is characterized by comprising a first supporting block and a second supporting block which are connected left and right, wherein the first supporting block comprises a first side face, a second side face and a third side face, the second supporting block comprises a fourth side face, a fifth side face and a sixth side face, the first supporting block and the second supporting block are attached to the fifth side face through the second side face, the first side face is connected with the fourth side face in a butt joint mode, the first side face and the fourth side face form a continuous arc-shaped face, the third side face is connected with the sixth side face in a butt joint mode, the third side face and the sixth side face form a U-shaped concave face, a first connecting part is arranged on the second side face, a second connecting part matched with the first connecting part is arranged on the fifth side face, the second side face and the fifth side face deviate from a central axis of the split type artificial vertebral body in a bilateral symmetry mode, and the central axis is located on the first supporting block;
the first connecting part comprises a first connecting hole, the second connecting part comprises a second connecting hole, the first connecting hole is obliquely arranged relative to the second side face, the second connecting hole is obliquely arranged relative to the fifth side face, the second connecting hole penetrates through the fourth side face, and the first connecting hole is communicated with the second connecting hole;
the third side face is provided with a first nail hole, the sixth side face is provided with a second nail hole, the first nail hole and the second nail hole are respectively arranged at two side edges of the U-shaped concave face, and the bottom of the second nail hole penetrates through the fifth side face and then is arranged on the second side face;
and a connecting piece is implanted in the second connecting hole of the second connecting part, and the first connecting hole of the first connecting part and the second connecting hole of the second connecting part are connected.
2. The split artificial vertebral body of claim 1 wherein the number of the first connecting holes and the second connecting holes is four, the four first connecting holes are respectively arranged on the upper side and the lower side of the second side, and the four second connecting holes are respectively arranged on the upper side and the lower side of the fifth side.
3. The split artificial vertebral body of claim 1 or 2, wherein a first positioning column is vertically arranged in the vertical direction of the second side surface, a first positioning groove matched with the first positioning column is arranged at a corresponding position of the fifth side surface, a second positioning column is vertically arranged in the vertical direction of the second side surface, a second positioning groove matched with the second positioning column is arranged at a corresponding position of the fifth side surface, and the first positioning column and the second positioning column protrude out of the second side surface.
4. The split artificial vertebral body according to claim 1 or 2, wherein a third positioning column which is obliquely arranged relative to the central axis is arranged in the horizontal direction of the second side surface, a third positioning groove which is matched with the third positioning column is arranged at a corresponding position on the fifth side surface, the third positioning column protrudes out of the second side surface, one end of the third positioning column is arranged on the third side surface and is flush with the third side surface, a fourth positioning column which is obliquely arranged relative to the central axis is arranged in the horizontal direction of the fifth side surface, a fourth positioning groove which is matched with the fourth positioning column is arranged at a corresponding position on the second side surface, one end of the fourth positioning column is arranged on the fourth side surface and is flush with the fourth side surface, and the fourth positioning column protrudes out of the fifth side surface.
5. The split artificial vertebral body of claim 4 wherein there are at least two third positioning posts and at least two fourth positioning posts and wherein the third positioning posts and the fourth positioning posts are staggered.
6. The split artificial vertebral body of claim 1 or 2, wherein the U-shaped concave surface is concave toward a middle portion of the split artificial vertebral body, and the U-shaped concave surface penetrates up and down through the split artificial vertebral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810243529.4A CN108852561B (en) | 2018-03-23 | 2018-03-23 | Split artificial vertebral body and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810243529.4A CN108852561B (en) | 2018-03-23 | 2018-03-23 | Split artificial vertebral body and application method thereof |
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| CN108852561A CN108852561A (en) | 2018-11-23 |
| CN108852561B true CN108852561B (en) | 2024-03-01 |
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| CN201810243529.4A Active CN108852561B (en) | 2018-03-23 | 2018-03-23 | Split artificial vertebral body and application method thereof |
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| US6719794B2 (en) * | 2001-05-03 | 2004-04-13 | Synthes (U.S.A.) | Intervertebral implant for transforaminal posterior lumbar interbody fusion procedure |
| WO2013075091A1 (en) * | 2011-11-17 | 2013-05-23 | Allosource | Multi-piece machine graft systems and methods |
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| US6258125B1 (en) * | 1998-08-03 | 2001-07-10 | Synthes (U.S.A.) | Intervertebral allograft spacer |
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