CN101843519B - Novel cervical vertebra dynamic internal fixing device - Google Patents
Novel cervical vertebra dynamic internal fixing device Download PDFInfo
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- CN101843519B CN101843519B CN2010101771111A CN201010177111A CN101843519B CN 101843519 B CN101843519 B CN 101843519B CN 2010101771111 A CN2010101771111 A CN 2010101771111A CN 201010177111 A CN201010177111 A CN 201010177111A CN 101843519 B CN101843519 B CN 101843519B
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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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- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
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Abstract
The invention relates to a novel cervical vertebra dynamic internal fixing device, which comprises an artificial cervical vertebra body and an artificial intervertebral disc. The artificial cervical vertebra body is inlaid on any vertebral body of the third section to the seventh section of partially cut human cervical vertebra. Two screw holes and two clamping grooves are symmetrically arranged on the artificial cervical vertebra body. A vertebral pedicle screw which is fixedly connected with the section of the human cervical vertebra body and a vertebral pedicle is arranged in each screw hole in a penetrating way. A vertebral pedicle screw lock pin cross bar is positioned and clamped between the two clamping grooves. The artificial intervertebral disc is arranged at the upper end and the lower end of the artificial cervical vertebra body, is arranged at a vertebral gap between an upper vertebral body and a lower vertebral body close to the position of the artificial cervical vertebra body, and comprises artificial nucleus pulposus and an artificial end plate. A screw hole is arranged on the artificial end plate. An artificial end plate fixing screw which is fixedly connected with the corresponding section of the artificial cervical vertebra body is arranged in the screw hole in a penetrating way. By adopting the internal fixing device, the invention has the advantages that the surgical invasion is small, the operation is easy and the dynamic fixation of the cervical vertebra after the subtotal excision of an anterior cervical single vertebral body can be realized.
Description
Technical field
The invention belongs to clinical medicine surgical technic field, relate to a kind of orthopaedics internal fixation of spine apparatus of realizing operative site cervical vertebra dynamic fixing after the single vertebral body subtotal ectomy of anterior cervical vertebrae, specifically, is a kind of cervical vertebra dynamic internal fixing device.
Background technology
The activeness of cervical vertebra is two coexistence features of human spine structure with stability.An ideal cervical vertebra inner fixing device should can effectively keep the physiological property of cervical vertebra when solving patient's slight illness.This ideal intervertebral prostheses should recover perform the operation sections physiological activity and stability, work that simultaneously can be permanently effective, and have good ruggedness.
By the end of at present; Patient for the single vertebral body in intervertebral disc of cervical vertebra degenerated disease row throat road time full resection operation all needs the first phase bone-graft fusion both at home and abroad; This type of operation has been proved to be the cervical stability that securely and effectively provides good; Merge the physiological activity function of sections cervical vertebra but sacrificed, and possibly cause the quickening of adjacent segment intervertebral disc degeneration.
Though already present in the market cervical vertebra artificial intervertebral disk is implementation part cervical vertebrae physiological movable function to a certain extent; But because the limitation on itself structural design of modus operandi and artificial intervertebral disk, make it still can't realize the dynamic fixing of cervical vertebra after the vertebral body time full excision.
Summary of the invention
The objective of the invention is to overcome the deficiency or the defective of prior art, a kind of cervical vertebra dynamic internal fixing device is provided, the dynamic fixing of cervical vertebra behind the single vertebral body of the realization anterior cervical vertebrae time full resection operation.
To achieve these goals, the present invention has adopted following technical scheme:
Cervical vertebra dynamic internal fixing device is characterized in that, it comprises cervical vertebra artificial vertebral body, artificial intervertebral disk;
Described cervical vertebra artificial vertebral body is embedded on the vertebral body of any joint in by human cervical spine the 3rd to the 7th joint of part excision; Be arranged with pair of screws hole and a pair of draw-in groove on this cervical vertebra artificial vertebral body, be equipped with the pedicle screw that links to each other with fixation of pedicle with the human cervical spine vertebral body of this sections in the screw hole; Locator card is provided with a pedicle screw pinning cross bar between two draw-in grooves;
Described artificial intervertebral disk is arranged at the two ends up and down of cervical vertebra artificial vertebral body; Intervertebral space place between adjacent with position, said cervical vertebra artificial vertebral body place two vertebral bodys up and down; Comprise the artificial nucleus and the artificial soleplate that link to each other successively; Artificial soleplate is provided with screw hole, be equipped with in this screw hole with its artificial soleplate hold-down screw that is fixedly linked of the human cervical spine vertebral body of corresponding sections.
Above-mentioned cervical vertebra dynamic fixation device, wherein,
The rectangle framework that described cervical vertebra artificial vertebral body is a front opening, its up and down two end faces be provided with the arc surface of an indent between two parties; This cervical vertebra artificial vertebral body is that the boundary is divided into first half, latter half of two parts with the median vertical line of its arc surface.
Be arranged with the pair of screws hole on the rectangle framework left and right sides plate of said cervical vertebra artificial vertebral body; Described pedicle screw outwards passes from the screw hole tilt.
Draw-in groove on the said cervical vertebra artificial vertebral body is symmetricly set on the front inner wall of its left and right sides plate, and described pedicle screw pinning cross bar locating rack is located between two draw-in grooves; Be embedded with an elastic telescopic mechanism in this pedicle screw pinning cross bar.
Described elastic telescopic mechanism comprises a strip housing, is horizontally set on the movable block tongue at these enclosure interior two ends, is fixedly connected on the spring between the two movable block tongues; The external part locator card of two movable block tongues is located in the draw-in groove on the plate inwall of the said cervical vertebra artificial vertebral body left and right sides.
The latter half of left and right sides of said pedicle screw pinning cross bar is an inclined plane, and this inclined plane is vertical each other with the axis in said pedicle screw hole.
The bottom surface of said artificial nucleus is circular, and its end face is and the suitable outer convex arc surface of the interior concaved circular cambered surface of cervical vertebra artificial vertebral body; Its rounded bottom surface is provided with a cylindrical boss between two parties, and the cross section of this boss is polygon or toothed surfaces.
Described artificial soleplate is circle or rectangular slab; The middle part of plate face be provided with one with the suitable groove of contour structures of artificial nucleus cylindrical boss; Link to each other with this groove be one with the stepped circular port of its coaxial line, the profile of this stepped circular port and soleplate hold-down screw is suitable.
The level latter half of placed in the middle of said cervical vertebra artificial vertebral body is provided with one and makes things convenient for it that internal thread hole of usefulness is installed.
Owing to adopted above-mentioned technical scheme, the present invention compared with prior art has following advantage and good effect:
The cervical vertebra dynamic internal fixing device that the present invention relates to is mainly constituted by mutual adaptive cervical vertebra artificial vertebral body, the artificial intervertebral disk of its version; Simultaneously; Utilize artificial soleplate hold-down screw and pedicle screw to make it to be fixedly connected respectively with the human cervical spine vertebral body of adjacent segment and time human cervical spine vertebral body of full excision that undergos surgery; Thereby, on structural design, can keep operation sections physiological activity and stability, work that simultaneously can be permanently effective; Have good ruggedness, realized the dynamic fixing after the single vertebral body subtotal ectomy of cervical vertebra.
This cervical vertebra dynamic internal fixing device has following characteristics:
(1) for the patient of the full resection operation of the single cervical vertebral body of the part anterior cervical vertebrae time sections internal fixation that undergos surgery, kept the stability and the activeness of cervical vertebra simultaneously, realize dynamic fixing;
(2) prosthese and vertebral body bone property soleplate contact area are big, reduce stress shielding, can effectively prevent because the operation sections collapse of vertebra that the elastic modulus difference of implant and bone causes;
(3) operation wound is little, and technical difficulty is not high, is convenient to promote, and has a extensive future.
Description of drawings
Through following examples and combine the description of its accompanying drawing, can further understand purpose, specific structural features and the advantage of its invention.In the accompanying drawing,
Fig. 1 is the structural representation that is positioned at the positive cervical vertebra dynamic internal fixing device of the present invention of human cervical spine;
Fig. 2 is the front structure for amplifying sketch map of artificial soleplate among Fig. 1;
Fig. 3 is the structural representation of looking up of Fig. 2;
Fig. 4 is the front structure for amplifying sketch map of artificial soleplate hold-down screw among Fig. 1;
Fig. 5 is the cross-sectional view along A-A line among Fig. 4;
Fig. 6 is the structural representation of looking up of Fig. 4;
Fig. 7 is the front structure for amplifying sketch map of artificial nucleus among Fig. 1;
Fig. 8 is the plan structure sketch map of Fig. 7;
Fig. 9 is the section structure for amplifying sketch map placed in the middle of E portion among Fig. 1;
Figure 10 is the Facad structure sketch map of artificial vertebral body among Fig. 1;
Figure 11 is the right TV structure sketch map of Figure 10;
Figure 12 is the plan structure sketch map of Figure 10;
Figure 13 is the section structure for amplifying sketch map along B-B line among Figure 11;
Figure 14 is the contour structures enlarged diagram of pedicle screw of the present invention;
Figure 15 is the front structure for amplifying sketch map of pedicle screw pinning cross bar;
Figure 16 is the cross-sectional view along E-E line among Figure 15;
Figure 17 is the cross-sectional view along C-C line among Figure 16;
Figure 18 is pedicle screw and the assembly structure sketch map of the cervical vertebra artificial vertebral body among Figure 13 among Figure 14;
Figure 19 is the structural representation that has assembled in the draw-in groove of cervical vertebra artificial vertebral body among Figure 18 behind the pedicle screw pinning cross bar among Figure 16;
Figure 20 is the cross-sectional view along D-D line among Fig. 1.
Among the figure:
The human cervical spine vertebral body of A-cervical vertebra artificial vertebral body place sections needs the vertebral body of operative segment excision at once during throat road vertebral body subtotal ectomy; B, two sections human cervical spine vertebral bodys up and down that C-is adjacent; D-human cervical spine pedicle of vertebral arch; The X-intervertebral space;
1-cervical vertebra artificial vertebral body; The 1A-first half; 1B-is latter half of; The arc surface of 10-indent; 11-pedicle screw hole; 11a-pedicle screw axially bored line; The 12-draw-in groove; The 13-internal thread hole;
The 2-artificial intervertebral disk; The 21-artificial nucleus; The bottom surface that 21a-is circular; The arcual end face of 21b-; The 211-boss; 212-polygon or toothed surfaces; The artificial soleplate of 22-; The 221-groove; The artificial soleplate screw hole of 222-;
The 3-pedicle screw; The nail tail of 31-pedicle screw; 3a-pedicle screw axis;
The artificial soleplate hold-down screw of 4-; 41-regular hexagon groove; 42-outer boss;
5-pedicle screw pinning cross bar; 5a-left side face; Inclined plane, 5b-right side; 51-elastic telescopic mechanism; 510-strip housing; The movable block tongue of 511-; The 512-spring.
The specific embodiment
Referring to Fig. 1,20, cooperate referring to Fig. 2～19, a kind of cervical vertebra dynamic internal fixing device that the present invention relates to mainly comprises cervical vertebra artificial vertebral body 1, artificial intervertebral disk 2;
Like Fig. 1,13, shown in 20; Cervical vertebra artificial vertebral body 1 is embedded on the vertebral body A of any joint in by human cervical spine the 3rd to the 7th joint of part excision; This cervical vertebra artificial vertebral body 1 is arranged with a pair of pedicle screw hole 11 and a pair of draw-in groove 12, and pedicle screw hole 11 tilt outwards are equipped with the pedicle screw 3 that human cervical spine vertebral body A and pedicle of vertebral arch D with this sections are fixedly linked; Locator card is provided with a pedicle screw pinning cross bar 5 between two draw-in grooves 12;
Like Fig. 1,2,3, shown in 9, artificial intervertebral disk 2 is arranged at the two ends up and down of cervical vertebra artificial vertebral body 1 respectively, the intervertebral space X place between adjacent with position, cervical vertebra artificial vertebral body 1 place two sections human cervical spine vertebral body B up and down, C; Comprise the artificial nucleus 21 and artificial soleplate 22 that link to each other successively; Be equipped with on two artificial soleplates 22 be equipped with respectively in 222, two screw holes 222 of artificial soleplate screw hole one with its artificial soleplate hold-down screw 4 that is fixedly linked of human cervical spine vertebral body B, the C of corresponding sections.
In order to solve firm technical problem is installed; Like Fig. 2,5, shown in 6; The present invention is provided with the regular hexagon groove 41 of an indent between two parties in the bottom of artificial soleplate hold-down screw 4, and its outer ring, bottom be provided with one with artificial soleplate on the suitable outer boss 42 of the artificial soleplate screw hole of stepped circle 222.
Shown in Figure 10～13, the cervical vertebra artificial vertebral body 1 that the present invention relates to is the rectangle framework of front opening, its up and down two end faces be provided with the arc surface 10 of an indent between two parties; This cervical vertebra artificial vertebral body 1 is that the boundary is divided into first half 1A, latter half of 1B two parts with the median vertical line of its arc surface 10.
Like Figure 13, shown in 18, in the present embodiment, be arranged with a pair of pedicle screw hole 11 on the left and right sides plate of cervical vertebra artificial vertebral body 1; Pedicle screw 3 outwards passes from screw hole 11 tilt.
Like Figure 11, shown in 13, in the present embodiment, the draw-in groove 12 on the cervical vertebra artificial vertebral body 1 is symmetricly set on the inwall of its first half 1A left and right sides plate.Like Figure 13,15～17, shown in 19, pedicle screw pinning cross bar 5 locating racks are located between two draw-in grooves 12; Be embedded with an elastic telescopic mechanism 51 in this pedicle screw pinning cross bar 5.
Like Figure 13,15～17, shown in 19, in the present embodiment, elastic telescopic mechanism 51 comprises that a strip housing 510, horizontal anomalous movement are arranged on the movable block tongue 511 at these housing 510 inner two ends, are fixedly connected on the spring 512 between the two movable block tongues 511; The external part locating rack of two movable block tongues 511 is located in two draw-in grooves 12 on the cervical vertebra artificial vertebral body 1 first half 1A.Utilize this elastic telescopic mechanism 51 can pedicle screw pinning cross bar 5 be in place quickly and accurately, and then shorten operating time effectively.
Shown in figure 14, nail tail 31 axial cross sections of pedicle screw 3 are an annular inclined plane, and being provided with of the angle between this inclined plane and the pedicle screw axis 3a needs to grasp flexibly, can omit different because of different patients' skeleton.In the present embodiment, this angle is about 135 °.
Like Figure 13,16, shown in 19; The pedicle screw pinning cross bar 5 latter half of left and right sides are an inclined plane 5a, 5b; The axis 11a in the pedicle screw hole 11 on this inclined plane and the cervical vertebra artificial vertebral body 1 is vertical each other; Just the parallel bottom surface that is attached at the pedicle screw nail tail 31 after the installation like this, can guarantee can not produce displacement because of the activity of cervical vertebra after pedicle screw 3 is installed.
In the present embodiment, like Fig. 7～10, shown in 12, the bottom surface 21a of artificial nucleus 21 is circular, and its end face 21b is the outer convex arc surface suitable with the interior concaved circular cambered surface of cervical vertebra artificial vertebral body 1 10; Be provided with a cylindrical boss 211 on the rounded bottom surface 21a between two parties, the cross section of this boss 211 can be polygon or toothed surfaces 212.In the present embodiment, what the cross section of boss 211 adopted is the toothed surfaces 212 shown in figure.
Like Figure 10, shown in 13, consider installation question, the present invention has been horizontally disposed with one between two parties and has made things convenient for it that internal thread hole 13 of usefulness is installed on the latter half of 1B of cervical vertebra artificial vertebral body 1.Adaptive with it erecting tools is screwed in its internal thread hole 13 can be fast, accurately, safely its integral installation is put in place.
The artificial soleplate 22 that the present invention relates to is parallel circular slab or rectangular slabs up and down.Like Fig. 1,2,3, shown in 9, in the present embodiment, artificial soleplate 22 is a circular slab parallel about in the of, its plate face middle part be provided with one with the suitable groove 221 of contour structures of artificial nucleus cylindrical boss 211; Link to each other with this groove 221 be one with the stepped circular screw hole 222 of its coaxial line, this stepped circular screw hole 222 is suitable with the profile of artificial soleplate hold-down screw 4, artificial soleplate hold-down screw 4 vertically passes in this stepped circular screw hole 222.
Concrete use step during operation:
After anaesthetizing successfully, patient gets dorsal position, shoulder back pad pulvinulus, and cervical region is faced upward naturally and is stretched, cervical region art district routine disinfection drape.
Human cervical spine vertebral body A to need excision is the center; Make laterally (or vertically) otch of right side, throat (or left side); Cut skin, subcutaneous tissue, free subcutaneous space successively, the longitudinal incision platysma is cut off the associating aponeurosis (aponeuroses) between neck vagina vasorum and the internal organs sheath; Separate the entering prevertebral space by passivity between neck vagina vasorum and the internal organs sheath; With trachea, esophagus left (or right) side retract, cut off prevertebral fascia, appear human cervical spine vertebral body A, anterior and two neighbouring vertebral body B and the C of its both sides intervertebral disc of needing time full excision of row vertebral body.
Hypocentrum B, the boring of C antetheca on adjacent with human cervical spine vertebral body A; Respectively be screwed into 1 piece of vertebral body and strut nail; The Caspar dilator struts human cervical spine vertebral body the A contiguous vertebral body B in both sides, C up and down; With intervertebral disc anterior fibrous ring in two ends about the sharp knife excision human cervical spine vertebral body A, take out the nucleus pulposus of regression with the vertebral pulp pincers, curet strikes off endplate cartilage; Sting big portion with three joint rongeurs except that human cervical spine vertebral body A; With impact type rongeur and vertebral pulp pincers sting except that human cervical spine vertebral body A up and down the two ends intervertebral space charge into intraspinal disc tissue and posterior longitudinal ligament, repair the bone groove with impact type rongeur and abrasive drilling, make last sending down the fishbone property soleplate adjacent and vertebral body left and right sides bone groove parallel sidewalls with human cervical spine vertebral body A.Behind a large amount of normal saline flushings; Human cervical spine vertebral body A adjacent on intervertebral space insert artificial soleplate 22; Hole, be screwed into soleplate hold-down screw 4 at the following soleplate of the upper vertebral body B adjacent through artificial soleplate screw hole 222, artificial soleplate 22 is fixed in the following soleplate of upper vertebral body B with human cervical spine vertebral body A; Insert artificial soleplate 22 at the adjacent following intervertebral space of human cervical spine vertebral body A; Hole, be screwed into soleplate hold-down screw 4 through artificial soleplate screw hole 222 soleplate on the next vertebral body C adjacent, artificial soleplate 22 is fixed in the last soleplate of the next vertebral body C with human cervical spine vertebral body A.Artificial nucleus 21 is snapped in respectively in the groove 221 of upper and lower artificial soleplate 22, artificial vertebral body 1 is inserted in the bone groove that trims, the interior up and down concaved circular cambered surface 10 of artificial vertebral body 1 and the evagination circular arc end face 21b of artificial nucleus 21 are matched.Remove Caspar dilator and vertebral body and strut nail, bone wax sealing nail hole.11 borings, tapping along pedicle screw hole, artificial vertebral body 1 both sides; Insert 1 piece of positioning needle after the depth measurement respectively, in the art perspective location errorless after, take out positioning needle; Respectively insert 1 piece of throat road pedicle screw 3, pedicle screw pinning cross bar 5 is inserted after errorless in perspective location once more.
A large amount of normal saline flushings, strict hemostasis, inspection wound chamber does not have layer-by-layer suture behind the obvious petechia, aseptic wrapping, art finishes.
Claims (7)
1. cervical vertebra dynamic internal fixing device is characterized in that, it comprises cervical vertebra artificial vertebral body, artificial intervertebral disk;
Described cervical vertebra artificial vertebral body is embedded on the vertebral body of any joint in by human cervical spine the 3rd to the 7th joint of part excision; Be arranged with pair of screws hole and a pair of draw-in groove on this cervical vertebra artificial vertebral body, be equipped with the pedicle screw that links to each other with fixation of pedicle with the human cervical spine vertebral body of this sections in the screw hole; Locator card is provided with a pedicle screw pinning cross bar between two draw-in grooves;
Described artificial intervertebral disk is arranged at the two ends up and down of cervical vertebra artificial vertebral body; Intervertebral space place between adjacent with position, said cervical vertebra artificial vertebral body place two vertebral bodys up and down; Comprise the artificial nucleus and the artificial soleplate that link to each other successively; Artificial soleplate is provided with screw hole, be equipped with in this screw hole with its artificial soleplate hold-down screw that is fixedly linked of the human cervical spine vertebral body of corresponding sections;
Draw-in groove on the said cervical vertebra artificial vertebral body is symmetricly set on the front inner wall of its left and right sides plate, and described pedicle screw pinning cross bar locating rack is located between two draw-in grooves; Be embedded with an elastic telescopic mechanism in this pedicle screw pinning cross bar;
Described elastic telescopic mechanism comprises a strip housing, is horizontally set on the movable block tongue at these enclosure interior two ends, is fixedly connected on the spring between the two movable block tongues; The external part locator card of two movable block tongues is located in the draw-in groove on the plate inwall of the said cervical vertebra artificial vertebral body left and right sides.
2. cervical vertebra dynamic fixation device according to claim 1 is characterized in that, the rectangle framework that described cervical vertebra artificial vertebral body is a front opening, its up and down two end faces be provided with the arc surface of an indent between two parties; This cervical vertebra artificial vertebral body is that the boundary is divided into first half, latter half of two parts with the median vertical line of its arc surface.
3. cervical vertebra dynamic fixation device according to claim 2 is characterized in that, is arranged with the pair of screws hole on the rectangle framework left and right sides plate of said cervical vertebra artificial vertebral body; Described pedicle screw outwards passes from the screw hole tilt.
4. cervical vertebra dynamic fixation device according to claim 1 is characterized in that, the latter half of left and right sides of said pedicle screw pinning cross bar is an inclined plane, and this inclined plane is vertical each other with the axis in said pedicle screw hole.
5. cervical vertebra dynamic fixation device according to claim 1 and 2 is characterized in that, the bottom surface of said artificial nucleus is circular, and its end face is and the suitable outer convex arc surface of the interior concaved circular cambered surface of cervical vertebra artificial vertebral body; Its rounded bottom surface is provided with a cylindrical boss between two parties, and the cross section of this boss is polygon or toothed surfaces.
6. cervical vertebra dynamic fixation device according to claim 1; It is characterized in that; Described artificial soleplate is circle or rectangular slab; The middle part of plate face be provided with one with the suitable groove of contour structures of artificial nucleus cylindrical boss, what link to each other with this groove is one and the stepped circular port of its coaxial line, the profile of this stepped circular port and soleplate hold-down screw is suitable.
7. cervical vertebra dynamic fixation device according to claim 2 is characterized in that, the level latter half of placed in the middle of said cervical vertebra artificial vertebral body is provided with one and makes things convenient for it that internal thread hole of usefulness is installed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101771111A CN101843519B (en) | 2010-05-18 | 2010-05-18 | Novel cervical vertebra dynamic internal fixing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101771111A CN101843519B (en) | 2010-05-18 | 2010-05-18 | Novel cervical vertebra dynamic internal fixing device |
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| CN101843519A CN101843519A (en) | 2010-09-29 |
| CN101843519B true CN101843519B (en) | 2012-05-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105078623B (en) * | 2015-09-02 | 2017-03-22 | 李志忠 | Biological self-locking artificial intervertebral disk system and application thereof |
| CN106236333B (en) * | 2016-10-01 | 2020-01-14 | 董谢平 | Artificial vertebral body fixed by anterior pedicle screw and positioning and installing tool |
| US10687960B2 (en) | 2017-04-25 | 2020-06-23 | Second Affiliated Hospital Of Second Military Mediccal University, Shanghai | Assembled vertebral body |
| CN109938881B (en) * | 2017-12-20 | 2023-08-01 | 山东威高骨科材料股份有限公司 | Artificial bone mounting mechanism |
| CN110236746A (en) * | 2019-06-19 | 2019-09-17 | 重庆医科大学附属第三医院(捷尔医院） | A kind of cervical vertebral fusion cage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4874389A (en) * | 1987-12-07 | 1989-10-17 | Downey Ernest L | Replacement disc |
| DE4208115A1 (en) * | 1992-03-13 | 1993-09-16 | Link Waldemar Gmbh Co | DISC ENDOPROTHESIS |
| US6206922B1 (en) * | 1995-03-27 | 2001-03-27 | Sdgi Holdings, Inc. | Methods and instruments for interbody fusion |
| US6342074B1 (en) * | 1999-04-30 | 2002-01-29 | Nathan S. Simpson | Anterior lumbar interbody fusion implant and method for fusing adjacent vertebrae |
| CN201719360U (en) * | 2010-05-18 | 2011-01-26 | 东人 | Novel cervical vertebra dynamic internal fixing device |
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