CN202875538U - Combined artificial vertebral body - Google Patents
Combined artificial vertebral body Download PDFInfo
- Publication number
- CN202875538U CN202875538U CN2012203244786U CN201220324478U CN202875538U CN 202875538 U CN202875538 U CN 202875538U CN 2012203244786 U CN2012203244786 U CN 2012203244786U CN 201220324478 U CN201220324478 U CN 201220324478U CN 202875538 U CN202875538 U CN 202875538U
- Authority
- CN
- China
- Prior art keywords
- support piece
- vertebral body
- cover plate
- artificial vertebral
- inner support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Classifications
-
- 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
Abstract
The utility model relates to a combined artificial vertebral body, and belongs to the technical field of internal fixation of implantation materials of vertebral column surgery. The combined artificial vertebral body is especially used for treating diseases, such as spinal tumor, tuberculosis and fracture, and is used for replacing the vertebral body and recovering a normal physiological function of the vertebral column of human body. The combined artificial vertebral body comprises convex cover plates, concave cover plates, fixing bolts, an inner supporting block, an outer supporting block and a spring. The inner supporting block is mounted in an inner hole of the outer supporting block, the spring is inserted into the inner hole of the inner supporting block, the concave cover plates are mounted at the two ends of the outer supporting block through the fixing bolts, and the two convex cover plates are respectively assembled on concave spherical surfaces of the two concave cover plates through convex spheres, thereby forming the combined artificial vertebral body. Hemispheric convex spheres are arranged on one surfaces of the convex cover plates, sharp cylinders which are uniformly distributed and thin plates which are vertical to the convex cover plates and are provided with tooth-shaped grooves are arranged on the other surfaces of the convex cover plates, the concave spherical surfaces are respectively arranged on one surfaces of the concave cover plates, the concave spherical surfaces are arranged for accommodating the convex spheres of the convex cover plates, and a plurality of cylindrical footstep holes are formed on one sides of the concave spherical surfaces of the concave cover plates.
Description
Technical field
The utility model relates to a kind of combined type artificial vertebral body, belong to technique for fixing field in the spinal surgery implant, be used in particular for treating the diseases such as tumor of spine, tuberculosis and fracture and recover human spine's normal physiological function to substitute vertebral body.
Background technology
From artificial vertebral body in 1969 be used for first clinical since, artificial vertebral body is used widely clinically as the effective vertebral body substitute of a class, for the diseases such as treatment tumor of spine, tuberculosis and fracture bring great convenience, artificial vertebral body can not only recover preferably the dissect physiology structure of spinal column and correct the kyphosis deformity, spinal stability is rebuild effect also give prominence to.Along with spinal vertebral is rebuild and the development of fusion technology, artificial vertebral body is as a kind of vertebral body substitute, for doctor and patient provide more treatment to select.But show by some biomechanics tests and clinical practice, still there are some defectives in traditional artificial vertebral body in treatment, artificial vertebral body Shortcomings aspect axial-rotation for example, firm not when upper hypocentrum is combined, cause that implant is deviate from, sedimentation etc., do not reach satisfied bone fusion, poor stability at a specified future date can lose the normal flexibility of a part of spinal column simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of combined type artificial vertebral body for above-mentioned weak point, owing to having dished cover plate, recessed cover plate, set bolt, inner support piece, outer support piece and spring, behind this combined type artificial vertebral body of Operation, vertebral body function after the excision is substituted by artificial vertebral body; diseased region up and down healthy vertebral body supports limbs by artificial vertebral body, keeps the physiological camber of human normal.
This utility model combined type artificial vertebral body is to take following technical scheme to realize:
The combined type artificial vertebral body comprises dished cover plate, recessed cover plate, set bolt, inner support piece, outer support piece and spring.Described inner support piece is installed in the outer support piece internal holes, spring is inserted in the inner support piece endoporus, the back-up block two ends adopt respectively set bolt that recessed cover plate is installed outside, and two dished cover plates are assembled to respectively by protruding spheroid on the concave spherical surface of two recessed cover plates, form the combined type artificial vertebral body.
Described dished cover plate is set to circular slab, square plate or sketch plate, and the dished cover plate simultaneously is provided with hemispheric protruding spheroid, and dished cover plate another side is provided with equally distributed sharp cylinder and perpendicular to the dished cover plate and be provided with the thin plate of serrate slot; Described recessed cover plate is arranged to the circle with dished cover plate appearance similar, square or sketch plate, recessed cover plate simultaneously is provided with a concave spherical surface, described concave spherical surface is arranged to hold the protruding spheroid of dished cover plate, concave spherical surface one side of recessed cover plate is provided with several cylinder stepped holes, macropore (counterbore) is arranged on concave spherical surface one side in the described cylinder stepped hole, described macropore (counterbore) can hold the cylinder step of set bolt, and described cylinder stepped hole is provided with 2 at least; Described recessed cover plate another side is provided with several locating rods, is used for pocketed springs, places restrictions on spring and whole combined type artificial Vertebral Compression position, prevents overcompression.Described locating rod is provided with 2 at least.Described locating rod can be arranged to cylinder, cylindroid, square column or other Special-Shaped Column; Described set bolt one end is set to threaded rod, the set bolt other end is provided with diameter greater than the cylinder step of threaded rod, described threaded rod is set to and can passes by the cylinder stepped hole of recessed cover plate, and the cylinder step of described set bolt is arranged to insert the macropore in the cylinder stepped hole of recessed cover plate and can not be passed small cylindrical opening; Described inner support piece is set to tubulose, described inner support piece is provided with endoporus, described inner support piece tubular shape and endoporus all can be set to circle, square, long waist shaped or other abnormity, an inner support piece wherein end is provided with raised step, and being provided with several screwed holes one on the inner support piece other end end face, described screwed hole one can match with the threaded rod of set bolt; Described outer support piece is set to the similar tubulose of inner support piece, described outer support piece 5 tubular shape and internal holes profile all can be set to circle, square, long waist shaped or other abnormity, the internal holes of outer support piece is arranged to hold that the inner support piece passes but outer support piece internal holes one end is provided with step in the hole, step is arranged to hold the raised step of inner support piece in the described hole, the end face that the outer support piece arranges an end of raised step is provided with several screwed holes two, described screwed hole two is provided with 2 at least, described screwed hole two can match with the threaded rod of set bolt, and outer support piece outer tube surface is provided with several screwed holes three; Described spring setting is set to circle, and spring is arranged to can insert the internal holes of inner support piece and can be enclosed within on the locating rod of recessed cover plate.
The following assembling of this a kind of combined type artificial vertebral body: the end that described inner support piece is threaded the hole passes from an end of the porose interior step of outer support piece band, spring is inserted in the inner support piece internal holes, an end that is threaded the hole at inner support piece and outer support piece adopts respectively hold-down screw that recessed cover plate is installed, install and simultaneously spring is set to respectively on the stock of recessed cover plate, then two dished cover plates are fitted on by protruding spheroid on the concave spherical surface of two recessed cover plates, form thus a kind of combined type artificial vertebral body.
Operation principle
A kind of combined type artificial vertebral body of this utility model is implanted respectively between the upper hypocentrum of vertebral body by two dished cover plates, sharp cylinder on the dished cover plate and be inserted into the thin plate of serrate slot and play fixation in the vertebral body, other assembly is installed in the middle of two dished cover plates, protruding spheroid and concave spherical surface by dished cover plate and recessed cover plate retrain its position, behind whole artificial vertebral body implant into body, sphere-contact by dished cover plate and recessed cover plate can be realized certain spinfunction, pass through simultaneously the spring of this artificial vertebral body inside, can realize contraction to a certain degree or strut function, in addition if needed, the screwed hole of outer support piece pipe face can be fixed by conventional pedicle screw, makes artificial vertebral body be difficult for deviating from vertebral body.Behind this combined type artificial vertebral body of Operation, the effect of spring can be modeled as compression or the stretch function of intervertebral disc, and the cooperation of convex-concave sphere can be simulated the distortion function of intervertebral disc, function by archecenra is gone back in these simulation maximizations makes the artificial vertebral body function closer to the function of formal vertebral body.Not only can recover the normal physiological height treatment disease of spinal column, keep simultaneously the mobility of part vertebral body, make vertebral body keep stable, reduce the risk of closing on the excessive complications of sections vertebral body pressure.
Advantage of the present utility model:
A kind of combined type artificial vertebral body of this utility model is reasonable in design, compact conformation, owing to having dished cover plate, recessed cover plate, set bolt, inner support piece, outer support piece and spring, behind this combined type artificial vertebral body of Operation, vertebral body function after the excision is substituted by artificial vertebral body; diseased region up and down healthy vertebral body supports limbs by artificial vertebral body, keeps the physiological camber of human normal.The axial activeness of this combined type artificial vertebral body has been avoided the risk of the complication such as the excessive generation degeneration of single vertebral body bearing capacity, make uniform stressed between each vertebral body and artificial vertebral body, simultaneously the concavo-convex sphere of combined type artificial vertebral body has guaranteed that normal vertebral body and artificial vertebral body see the probability of axial-rotation, make diseased region still keep certain rotary moveable, largely alleviated the part physiological activity that patient loses because of the operation impact, can make the more healthy life of patient.
Description of drawings
In order to understand better this utility model and to understand practical application of the present utility model, provide the following drawings at this paper, and described accompanying drawing has been carried out reference.Should be noted that given accompanying drawing only as an example with preferred implementation, the scope defined in restriction explanation and claims.
Fig. 1 is the assembling decomposing schematic representation of a kind of combined type artificial vertebral body.
Fig. 2 is the confined state schematic diagram of a kind of combined type artificial vertebral body.
Fig. 3 is the dished cover plate front view of a kind of combined type artificial vertebral body.
Fig. 4 is the dished cover plate left view of a kind of combined type artificial vertebral body.
Fig. 5 is the recessed cover plate front view of a kind of combined type artificial vertebral body.
Fig. 6 is the recessed cover plate A-A cutaway view of a kind of combined type artificial vertebral body of Fig. 5.
Fig. 7 is the recessed cover plate top view of a kind of combined type artificial vertebral body.
Fig. 8 is the inner support piece front view of a kind of combined type artificial vertebral body.
Fig. 9 is the inner support piece B-B cutaway view of a kind of combined type artificial vertebral body of Fig. 8.
Figure 10 is the inner support piece top view of a kind of combined type artificial vertebral body.
Figure 11 is the outer support piece front view of a kind of combined type artificial vertebral body.
Figure 12 is the outer support piece C-C cutaway view of a kind of combined type artificial vertebral body.
Figure 13 is the outer support piece top view of a kind of combined type artificial vertebral body.
Figure 14 is the set bolt schematic diagram of a kind of combined type artificial vertebral body.
The specific embodiment
With reference to accompanying drawing 1～14, a kind of combined type artificial vertebral body comprises dished cover plate 1, recessed cover plate 3, set bolt 2, inner support piece 4, outer support piece 5 and spring 6.Described inner support piece 4 is installed in outer support piece 5 internal holes, spring 6 is inserted in the inner support piece endoporus 41, back-up block 5 two ends adopt respectively set bolt 2 that recessed cover plate 3 is installed outside, two dished cover plates 1 are assembled to respectively by protruding spheroid 14 on the concave spherical surface 31 of two recessed cover plates 3, form the combined type artificial vertebral body.
Described dished cover plate 1 is set to circular slab, square plate or sketch plate 11.Described dished cover plate 1 one side is provided with hemispheric protruding spheroid 14, and dished cover plate 1 another side is provided with equally distributed sharp cylinder 12 and perpendicular to the dished cover plate and be provided with the thin plate 13 of serrate slot; Described recessed cover plate 3 is arranged to the circle with dished cover plate 1 appearance similar, square or sketch plate.Described recessed cover plate 3 one sides are provided with a concave spherical surface 31, described concave spherical surface 31 is arranged to hold the protruding spheroid 14 of dished cover plate 1, concave spherical surface one side of recessed cover plate 3 is provided with several cylinder stepped holes 32, macropore (counterbore) 34 is arranged on concave spherical surface 31 1 sides in the described cylinder stepped hole 32, described macropore 34 can hold the cylinder step 22 of set bolt 2, and described cylinder stepped hole is provided with 2 at least; Described recessed cover plate 3 another sides are provided with several locating rods 33, are used for pocketed springs, place restrictions on spring 6 and whole combined type artificial Vertebral Compression position, prevent overcompression.Described locating rod 33 can be arranged to cylinder, cylindroid, square column or other Special-Shaped Column.Described locating rod 33 is provided with 2 at least.Described set bolt 2 one ends are set to threaded rod 21, set bolt 2 other ends are provided with diameter greater than the cylinder step 22 of threaded rod, described threaded rod 2 is set to and can passes by the cylinder stepped hole 32 of recessed cover plate 3, and the cylinder step 22 of described set bolt 2 is arranged to insert the macropore (counterbore) 34 in the cylinder stepped hole 32 of recessed cover plate 3 and can not be passed small cylindrical opening.Described inner support piece 4 is set to tubulose, described inner support piece 4 is provided with endoporus 41, described inner support piece 4 tubular shape and endoporus 41 all can be set to circle, square, long waist shaped or other abnormity, inner support piece 4 a wherein end is provided with raised step 42, and be provided with several screwed holes 1 on inner support piece 4 other end end faces 43, described screwed hole 1 can match with the threaded rod 21 of set bolt 2, and described screwed hole 1 is provided with 2 at least; Described outer support piece 5 is set to the similar tubulose of inner support piece 4, and described outer support piece 5 tubular shape 53 and internal holes profile all can be set to circle, square, long waist shaped or other abnormity; The internal holes of outer support piece 5 is arranged to hold that inner support piece 4 passes but outer support piece 5 internal holes one end is provided with step 52 in the hole, step 52 is arranged to hold the raised step 42 of inner support piece 4 in the described hole, the end face of outer support piece 5 raised step one end is provided with several screwed holes 2 51, described screwed hole 2 51 is provided with 2 at least, described screwed hole 2 51 can match with the threaded rod 21 of set bolt 2, outer support piece 5 outer tube surfaces 53 are provided with several screwed holes 3 55, and described screwed hole 3 55 is provided with 2 at least; Described spring 6 is set to circle, and spring 6 is arranged to can insert the endoporus 41 of inner support piece 4 and can be enclosed within on the locating rod 33 of recessed cover plate 3.Described spring 6 is provided with 2 at least.
The following assembling of this a kind of combined type artificial vertebral body: the end that inner support piece 4 is threaded hole 44 passes from the end of outer support piece 5 with porose interior step 52, spring 6 is inserted in inner support piece 4 endoporus 41, an end that is threaded hole 1 at inner support piece 4 adopts hold-down screw 2 that recessed cover plate 3 is installed, back-up block 5 is threaded the recessed cover plate 3 of end employing hold-down screw 2 installations in hole 2 51 outside, installing is set to spring 6 respectively on the locating rod 33 of recessed cover plate 3 simultaneously, then two dished cover plates 1 are fitted on the concave spherical surface 31 of two recessed cover plates 3 by protruding spheroid 14, form thus a kind of combined type artificial vertebral body.
Claims (9)
1. a combined type artificial vertebral body is characterized in that: comprise dished cover plate, recessed cover plate, set bolt, inner support piece, outer support piece and spring; Described inner support piece is installed in the outer support piece internal holes, spring is inserted in the inner support piece endoporus, the back-up block two ends adopt respectively set bolt that recessed cover plate is installed outside, and two dished cover plates are assembled to respectively by protruding spheroid on the concave spherical surface of two recessed cover plates, form the combined type artificial vertebral body.
2. a kind of combined type artificial vertebral body according to claim 1, it is characterized in that: described dished cover plate simultaneously is provided with hemispheric protruding spheroid, and dished cover plate another side is provided with equally distributed sharp cylinder and perpendicular to the dished cover plate and be provided with the thin plate of serrate slot.
3. a kind of combined type artificial vertebral body according to claim 1 and 2, it is characterized in that: described dished cover plate is set to circular slab or square plate.
4. a kind of combined type artificial vertebral body according to claim 1, it is characterized in that: described recessed cover plate simultaneously is provided with a concave spherical surface, described concave spherical surface is arranged to hold the protruding spheroid of dished cover plate, concave spherical surface one side of recessed cover plate is provided with several cylinder stepped holes, macropore is arranged on concave spherical surface one side in the described cylinder stepped hole, and described macropore can hold the cylinder step of set bolt; Described recessed cover plate another side is provided with several locating rods, is used for pocketed springs; Described cylinder stepped hole is provided with 2 at least; Described locating rod is provided with 2 at least.
5. a kind of combined type artificial vertebral body according to claim 4, it is characterized in that: described locating rod is arranged to cylinder, cylindroid or square column.
6. a kind of combined type artificial vertebral body according to claim 1, it is characterized in that: described inner support piece is set to tubulose, the inner support piece is provided with endoporus, described inner support piece tubular shape and endoporus all are set to circle, square or long waist shaped, an inner support piece wherein end is provided with raised step, and being provided with several screwed holes one on the inner support piece other end end face, described screwed hole one can match with the threaded rod of set bolt.
7. a kind of combined type artificial vertebral body according to claim 1, it is characterized in that: described outer support piece is set to the similar tubulose of inner support piece.
8. a kind of combined type artificial vertebral body according to claim 1, it is characterized in that: described outer support piece tubular shape and internal holes profile all are set to circle, square or long waist shaped, the internal holes of outer support piece is arranged to hold the inner support piece, back-up block internal holes one end is provided with step in the hole outside, step is arranged to hold the raised step of inner support piece in the described hole, the end face that the outer support piece arranges an end of raised step is provided with several screwed holes two, described screwed hole two can match with the threaded rod of set bolt, and outer support piece outer tube surface is provided with several screwed holes three.
9. a kind of combined type artificial vertebral body according to claim 1, it is characterized in that: described spring is set to circle, and spring is arranged to can insert the internal holes of inner support piece and can be enclosed within on the locating rod of recessed cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203244786U CN202875538U (en) | 2012-07-06 | 2012-07-06 | Combined artificial vertebral body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203244786U CN202875538U (en) | 2012-07-06 | 2012-07-06 | Combined artificial vertebral body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202875538U true CN202875538U (en) | 2013-04-17 |
Family
ID=48067010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203244786U Withdrawn - After Issue CN202875538U (en) | 2012-07-06 | 2012-07-06 | Combined artificial vertebral body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202875538U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102715969A (en) * | 2012-07-06 | 2012-10-10 | 常州市康辉医疗器械有限公司 | Combined artificial vertebral body |
| CN104083235A (en) * | 2014-07-11 | 2014-10-08 | 嘉兴德康医疗器械有限公司 | Moldable individual spine fusion device |
| CN106821555A (en) * | 2016-12-29 | 2017-06-13 | 大博医疗科技股份有限公司 | Three dimensional elasticity dynamic artificial vertebral body |
| CN111643171A (en) * | 2020-05-22 | 2020-09-11 | 北京市春立正达医疗器械股份有限公司 | Multi-stage angle dynamic vertebral body implantation system |
-
2012
- 2012-07-06 CN CN2012203244786U patent/CN202875538U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102715969A (en) * | 2012-07-06 | 2012-10-10 | 常州市康辉医疗器械有限公司 | Combined artificial vertebral body |
| CN102715969B (en) * | 2012-07-06 | 2014-10-08 | 常州市康辉医疗器械有限公司 | Combined artificial vertebral body |
| CN104083235A (en) * | 2014-07-11 | 2014-10-08 | 嘉兴德康医疗器械有限公司 | Moldable individual spine fusion device |
| CN106821555A (en) * | 2016-12-29 | 2017-06-13 | 大博医疗科技股份有限公司 | Three dimensional elasticity dynamic artificial vertebral body |
| CN106821555B (en) * | 2016-12-29 | 2018-07-27 | 大博医疗科技股份有限公司 | Three dimensional elasticity dynamic artificial vertebral body |
| CN111643171A (en) * | 2020-05-22 | 2020-09-11 | 北京市春立正达医疗器械股份有限公司 | Multi-stage angle dynamic vertebral body implantation system |
| CN111643171B (en) * | 2020-05-22 | 2021-06-04 | 北京市春立正达医疗器械股份有限公司 | Multi-stage angle dynamic vertebral body implantation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130417 Effective date of abandoning: 20141008 |
|
| RGAV | Abandon patent right to avoid regrant |