CN102166140B - High-simulation customized combined artificial vertebra - Google Patents
High-simulation customized combined artificial vertebra Download PDFInfo
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- CN102166140B CN102166140B CN2011100989142A CN201110098914A CN102166140B CN 102166140 B CN102166140 B CN 102166140B CN 2011100989142 A CN2011100989142 A CN 2011100989142A CN 201110098914 A CN201110098914 A CN 201110098914A CN 102166140 B CN102166140 B CN 102166140B
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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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- 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)
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- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
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- 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)
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- Veterinary Medicine (AREA)
- Prostheses (AREA)
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Abstract
The invention discloses a high-simulation customized combined artificial vertebra. The high-simulation customized combined artificial vertebra is a high-simulation prosthetic implant reconstructed according to CT three-dimensional data of the lesion part of the vertebra of a patient, the outer surface of the high-simulation customized combined artificial vertebra is in a porous titanium structure, and the high-simulation customized combined artificial vertebra is formed by connecting a vertebral upper part, a vertebral lower part and vertebral accessories of the porous structure. Thus, after a vertebral body is resected, by combining the upper end and lower end of the artificial vertebra in a screw-in mode, the artificial vertebra can be fixed more firmly, autogenous bone or allogeneic bone transplantation can be carried out in a bone transplanting cage in the vertebral body, and the position of a bone transplanting block is ensured to be stable. Medicaments can be injected for treating the local lesion part by a small medicament re-injecting hole and an optional screw-in joint which are reserved at the sides of the vertebral body, thereby being especially suitable for patients with spinal tuberculosis and tumors. In addition, because the outer surface is made of porous titanium materials, the artificial vertebral body has better biocompatibility, can be used as a carrier for in-vitro co-culture of osteoblasts, and can be further used as a good carrier for ingrowth of blood vessels and osseous tissues.
Description
Technical field
The present invention relates to a kind of orthopaedics prosthetic appliance of medical domain, especially a kind of high simulation customized combined artificial vertebra, this high simulation customized combined artificial vertebra can be according to the different state of an illness of patient, substitute breast, lumbar vertebra, correction is unstable because of disease vertebral resection posterior spinal such as spinal fracture, tuberculosis, tumor and deformities, keeps spinal stabilization.
Background technology
At present, the pathological changes patients such as tumor of spine, tuberculosis, fracture and deformity are increasing, can have a strong impact on patient's daily life, work, quality of life, jeopardize what is more patient's life, and surgical operation is one of at present effective Therapeutic Method.Along with the appearance (such as Tomita art formula) of all kinds of new operation theories and the improvement of internal fixation of spine technology, the clinical operation method also constantly improves.The present whole excision of vertebral body, titanium alloy artificial vertebral body or the implantation of titanium net and the inner bone-graft fusion of mostly adopting both at home and abroad filled Vertebral defect, rebuilds spinal stabilization.Yet the mode that the vertebral body prosthese that uses at present or titanium net are implanted still comes with some shortcomings:
1) it all is not simulation architecture for the artificial vertebral body that uses at present or titanium web frame, though can recover spinal stabilization after implanting and rebuild spinal bone complete, but postoperative is because without the appendix of vertebra part-structure, cause spinal cord to be protected without canalis spinalis, have a strong impact on spinal stability and functional rehabilitation behind the operation in patients;
2) titanium net embedding upper and lower vertebral body may occur in titanium net bone grafting, vertebral height occurs rebuilding and loses, and the intervertebral foramina volume reduces, the nerve root part is upset, cervical vertebra is in line of force labile state on the whole simultaneously, very easily causes Radiculopathy symptom, especially sufferers of osteoporosis face.
3) do not connect spinal column internal fixation device after the artificial vertebral body of a part and titanium net are implanted, postoperative is passed in time, in case pretightning force disappears, implant is loosening then must to cause unstable spine, it can to nerve root, blood vessel injury on every side, cause severe complication what is more.
4) existing artificial vertebral body adopts the metal material such as titanium alloy to make more, its common trait be elastic modelling quantity greater than vertebral body, vertebral bone and artificial vertebral body interface easily produce larger stress, because biocompatibility is undesirable, are difficult to the intervertebral fusion effect that reaches satisfied.
5) after the artificial vertebral body of the great majority that use is at present implanted, because its integrally-built restriction can't be carried out topical medications after surgery, particularly for the patient of vertebral tumor and tuberculosis, the probability of postoperative local lesion recurrence is increased greatly.
Summary of the invention
Defective and deficiency for above-mentioned prior art existence, the object of the invention is to, provide a kind of by the high simulation customized combined artificial vertebra of rapid shaping technique according to the design of different conditions of patients and modus operandi, thus the shape and implant smoothly by new design biology of excision vertebral body in can complete recovery art; After implantation, can mate the at present clinical nail-stick system that generally uses, make artificial vertebra more stable; And by its special material and particular design, make the more existing artificial vertebral body of high simulation customized combined artificial vertebra have better biocompatibility and practicality.
In order to realize above-mentioned task, the present invention takes following technical scheme:
A kind of high simulation customized combined artificial vertebra, it is characterized in that, this high simulation customized combined artificial vertebra is the high emulation prothesis implant body of rebuilding according to the CT three-dimensional data at patient's spinal lesion position, its outer surface is POROUS TITANIUM, it is by the vertebral body top of loose structure, and vertebral body bottom and vertebra adnexa connect to form.
Described vertebral body top accounts for 2/3 of the artificial vertebral height of the high Simulation Composition of whole customization, the outside is the vertebral body shape, the upper surface on vertebral body top has cone, the vertebral body upper interior portion is shaped with screwed hole in advance, both sides, rear, vertebral body top are shaped with the circular pedicle screw nail hole of perforation in advance, and the pedicle screw nail is shaped with cylindrical nail road in the hole in advance.
Described vertebral body bottom accounts for 1/3 of the artificial vertebral height of the high Simulation Composition of whole customization, is similarly the vertebral body shape, and the lower surface of vertebral body bottom has cone; Cylindrical shape bone grafting cage is arranged on the vertebral body bottom, be shaped with in advance external screw thread on the cylindrical shape bone grafting cage outer surface, the internal whorl hole on this external screw thread and vertebral body top is complementary; Also have a pair of re-injection duct around the cylindrical shape bone grafting cage of vertebral body bottom, this re-injection duct is until the edge of vertebral body bottom, and the outlet in re-injection duct is shaped with female thread and circular aperture in advance.
Described vertebra adnexa comprises monosymmetric pedicle of vertebral arch, transverse process, spinous process, vertebral plate, superior articular process and inferior articular process, in vertebra adnexa section both sides the pedicle nail hole of running through is arranged, be shaped with in advance the pedicle nail female thread that pedicle nail nail road is installed in the pedicle nail hole.
High simulation customized combined artificial vertebra of the present invention owing to can be connected by pedicle screw in artificial vertebral body structure and adnexa thereof, can make its safe implantation and is complementary with clinical spinal internal fixation system commonly used and fixedly secures; Secondly adopt the screw-in combination by the upper and lower two parts of vertebral body, can in the inner bone grafting cage of vertebral body, carry out from body bone or allogenic bone transplantation and guaranteed the position stability of plant bone mass; Moreover medicine re-injection aperture, selective by 2 reservations in side, artificial vertebral body bottom are screwed into joint and fluid injection flexible pipe, can carry out postoperative local injection of medicine treatment, particularly spinal tuberculosis and tumor patient to the pathological changes part.In addition because high simulation customized combined artificial vertebra of the present invention, adopt the unique design of POROUS TITANIUM at outer surface, make artificial vertebral body have better biocompatibility, the carrier that not only can cultivate altogether as osteoblasts in vitro, but also will further become the good carrier of growing into of blood vessel and osseous tissue.Artificial vertebral body and vertebra adnexa section can be connected by pedicle screw, make the artificial vertebra of implantation better recover spinal stabilization and to rebuild spinal bone complete.
Description of drawings
Fig. 1 is the overall structure sketch map of high simulation customized combined artificial vertebra of the present invention;
Fig. 2 is that the vertebral body upper back is seen (A to) structural representation;
Fig. 3 is vertebral body upper side top structure sketch map among Fig. 1;
Fig. 4 is that (A to) structural representation is seen in back, vertebral body bottom;
Fig. 5 is vertebral body lower side top structure and local re-injection pore passage structure sketch map;
Fig. 6 is vertebral body top and structural representation after the vertebral body bottom is connected;
Fig. 7 is vertebra accessories section structure top view;
Fig. 8 is after adopting pedicle screw to be connected and fixed and the partial structurtes sketch map;
Fig. 9 is the top plan view of Fig. 1.
Reference numeral among the figure represents respectively: 1, vertebral body top, 2, the vertebral body bottom, 3, the vertebra adnexa, 4, cylinder staple road, vertebral body top, 5, vertebral body top screwed hole, 6, pedicle screw nail hole, 7, cylindrical shape bone grafting cage, 8, external screw thread, 9, circular aperture, 10, female thread, 11, re-injection duct, 12, matsurface, 13, cone, 14, pedicle of vertebral arch, 15, transverse process, 16, spinous process, 17, vertebral plate, 18, the superior articular process, 19, inferior articular process, 20, pedicle nail hole, 21, vertebra adnexa pedicle nail nail road, 22, the pedicle nail female thread.
The present invention is described in further detail below in conjunction with accompanying drawing.
The specific embodiment
Referring to accompanying drawing 1～9, high simulation customized combined artificial vertebra of the present invention, the CT three-dimensional reconstruction data according to patient's spinal lesion position, make and the consistent high emulation prothesis implant body of local spinal lesion position form, its outer surface is POROUS TITANIUM, it is by the vertebral body top 1 of loose structure, and vertebral body bottom 2 and vertebra adnexa 3 form.High simulation customized combined artificial vertebra after the implantation makes patient's the aspects such as postoperative spinal column integrity, function and outward appearance obtain better to recover.
The lower surface of the upper surface on vertebral body top 1 and vertebral body bottom 2 is matsurface 12, and respectively has three cones 13 to protrude from the surface, is convenient to rub increasing after the implantation to close between hypocentrum.Vertebra adnexa 3 is that high emulation customizes the vertebra rear portion, comprise symmetrical both sides pedicle of vertebral arch 14, transverse process 15, spinous process 16, vertebral plate 17 and facet joint (18,19) etc. up and down, in vertebra adnexa 3 both sides pedicle nail hole 20 is arranged, the pedicle nail hole 20 interior pedicle nail nail road 21 that runs through and the female threads 22 that mate pedicle nail of being shaped with in advance.Can be by pedicle screw and vertebral body top 1, vertebral body bottom 2 is connected.
The present invention in use, the appropriate location is tightened and inserted to two parts about the vertebral body, according to prefabricated screw nail road artificial vertebral body, accessories section and the spinal column internal fixation device selected are linked again, it can make its safe implantation and be complementary with clinical spinal column internal fixation device commonly used, and is firmly fixing.In addition, medicine re-injection aperture, the selective reserved by the vertebral body side are screwed into joint and fluid injection flexible pipe, can carry out injection of medicine treatment, particularly spinal tuberculosis and tumor patient to the pathological changes part.In addition because the present invention adopts the unique design of porous titanium material in the artificial vertebral body outer wall surface, make artificial vertebral body have better biocompatibility, the carrier that not only can cultivate altogether as osteoblasts in vitro, but also will further become the good carrier of growing into of blood vessel and osseous tissue.Artificial vertebral body and vertebra adnexa section can be connected by pedicle screw, make the artificial vertebra of implantation better recover spinal stabilization and to rebuild spinal bone complete.
Claims (3)
1. high simulation customized combined artificial vertebra, it is characterized in that, this high simulation customized combined artificial vertebra is the high emulation prothesis implant body of rebuilding according to the CT three-dimensional data at patient's spinal lesion position, its outer surface is the POROUS TITANIUM structure, it is by the vertebral body top (1) of loose structure, and vertebral body bottom (2) and vertebra adnexa (3) connect to form;
Described vertebral body top (1) accounts for 2/3 of the artificial vertebral height of the high Simulation Composition of whole customization, the outside is the vertebral body shape, the upper surface on vertebral body top (1) is matsurface (12), there are three cones (13) on its surface, inside, vertebral body top (1) is shaped with the cylindric screwed hole (5) that can mate bone grafting cage (7) in advance, both sides, rear, vertebral body top (1) are shaped with circular pedicle screw nail hole (6) in advance, and pedicle screw is followed closely the female thread (22) that is shaped with in advance cylindrical nail road (4) in the hole (6) and can mates pedicle nail;
Described vertebral body bottom (2) accounts for 1/3 of the artificial vertebral height of the high Simulation Composition of whole customization, be similarly the vertebral body shape, the lower surface of vertebral body bottom (2) is matsurface (12), there are three cones (13) on its surface, there is cylindrical shape bone grafting cage (7) top, vertebral body bottom (2), be shaped with in advance external screw thread (8) on cylindrical shape bone grafting cage (7) outer surface, this external screw thread (8) is complementary with the internal whorl hole (5) on vertebral body top (1);
Described vertebra adnexa (3) comprises monosymmetric pedicle of vertebral arch (14), transverse process (15), spinous process (16), vertebral plate (17), superior articular process (18) and inferior articular process (19), in vertebra adnexa (3) both sides pedicle nail hole (20) is arranged, be shaped with in advance the pedicle nail nail road (21) that runs through and the female thread (22) that mates pedicle nail in pedicle nail hole (20).
2. high simulation customized combined artificial vertebra as claimed in claim 1, it is characterized in that, the cylindrical shape bone grafting cage (7) of described vertebral body bottom (2) also has a pair of re-injection duct (11) on every side, this oblique outer lower side, re-injection duct (11) is until the outer surface edge of vertebral body bottom (2), re-injection duct (11) is cylinder, re-injection duct (11) outer surface has circular aperture (9), the inside of circular aperture (9) near-end is shaped with the female thread (10) of being convenient to connect medicine re-injection pipe joint in advance.
3. high simulation customized combined artificial vertebra as claimed in claim 2 is characterized in that, described re-injection duct (11) is cylinder, and cylindrical shape bone grafting cage (7) inside is led in oblique interior top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100989142A CN102166140B (en) | 2011-04-20 | 2011-04-20 | High-simulation customized combined artificial vertebra |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100989142A CN102166140B (en) | 2011-04-20 | 2011-04-20 | High-simulation customized combined artificial vertebra |
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| CN102166140A CN102166140A (en) | 2011-08-31 |
| CN102166140B true CN102166140B (en) | 2013-04-24 |
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| CN2011100989142A Expired - Fee Related CN102166140B (en) | 2011-04-20 | 2011-04-20 | High-simulation customized combined artificial vertebra |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI624244B (en) * | 2014-03-28 | 2018-05-21 | Paonan Biotech Co Ltd | Spinal facet joint fusion fixture with three-dimensional mesh body |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103300949A (en) * | 2013-06-03 | 2013-09-18 | 北京爱康宜诚医疗器材股份有限公司 | Artificial vertebral body |
| CN105534622A (en) * | 2015-12-29 | 2016-05-04 | 苏州欣荣博尔特医疗器械有限公司 | Artificial vertebra and operation method |
| KR102573503B1 (en) * | 2016-12-12 | 2023-09-01 | 더 리젠츠 오브 더 유니버시티 오브 캘리포니아 | biomimetic implant |
| CN108294850B (en) * | 2017-01-12 | 2019-12-06 | 上海理工大学 | 3D printed implantable prosthesis device for cervical spondylodiscectomy |
| CN108542556B (en) * | 2018-04-28 | 2024-05-28 | 北京爱康宜诚医疗器材有限公司 | Lumbosacral artificial prosthesis |
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| CN202051852U (en) * | 2011-04-20 | 2011-11-30 | 中国人民解放军第四军医大学 | Highly-simulated customized combined-type artificial spine |
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| US20120150243A9 (en) * | 2006-08-31 | 2012-06-14 | Catholic Healthcare West (Chw) | Computerized Planning Tool For Spine Surgery and Method and Device for Creating a Customized Guide for Implantations |
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Patent Citations (2)
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|---|---|---|---|---|
| CN2730336Y (en) * | 2004-09-20 | 2005-10-05 | 李孔嘉 | Vertebra reconstitution reductor implanted through vertebral foramen |
| CN202051852U (en) * | 2011-04-20 | 2011-11-30 | 中国人民解放军第四军医大学 | Highly-simulated customized combined-type artificial spine |
Non-Patent Citations (4)
| Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI624244B (en) * | 2014-03-28 | 2018-05-21 | Paonan Biotech Co Ltd | Spinal facet joint fusion fixture with three-dimensional mesh body |
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| CN102166140A (en) | 2011-08-31 |
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