CN201040015Y - Artificial vertebrae cervicables composite joint device - Google Patents
Artificial vertebrae cervicables composite joint device Download PDFInfo
- Publication number
- CN201040015Y CN201040015Y CNU2006201649180U CN200620164918U CN201040015Y CN 201040015 Y CN201040015 Y CN 201040015Y CN U2006201649180 U CNU2006201649180 U CN U2006201649180U CN 200620164918 U CN200620164918 U CN 200620164918U CN 201040015 Y CN201040015 Y CN 201040015Y
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- CN
- China
- Prior art keywords
- vertebral body
- fixed part
- body parts
- head structure
- joint device
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- 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.)
- Expired - Lifetime
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
Abstract
The utility model relates to a device for rebuilding the cervical vertebra physiologically after the whole removal of the cervical vertebra armature, in particular to an artificial cervical vertebra recover joint device which can simulate normal cervical vertebra so as to recover the stability and activity of cervical vertebra. The utility model is characterized in that the utility model takes an upper-lower symmetrical structure; a centrum part(2) is connected between the two symmetrical fixed parts(1); and a fixed hole is arranged on the front wing(4) of the fixed part; a round head structure(6) is arranged on one side of the base bottom(5) of the fixed part opposite to the front wing(4) of the fixed part; the centrum part(2) takes upper-lower symmetrical structure, and an arcuate reentrant(7) is arranged on the upper and the down surfaces; both ends of the centrum part(2) are respectively and movably sleeved with the round head structure(6) of the fixed part(1) through the arcuate reentrant(7) to form a ball joint. The utility model can promises the patient being wholly removed the cervical vertebra armature to resume the stability and activity of the vertebra armature, thereby achieving physiological rebuilding in real mean.
Description
Technical field
This utility model relates to the device that carries out physiological cervical vertebral reconstructing after a kind of cervical vertebral body thorn excises entirely, especially can simulate the artificial cervical complex joint device that normal cervical vertebra recovers cervical stability and mobility.
Background technology
Clinically for the diseases such as fracture, regression, infection or tumor of cervical vertebra, need to carry out the full excision of cervical vertebral body thorn under a lot of situations, be that vertebral body window formula fluting is to exposing canalis spinalis, the most of sclerotin of excision slotted zones vertebral body, two ends residual fraction sclerotin, thoroughly the next intervertebral disc is gone up in excision simultaneously, then the sections of excision is rebuild.At present, common clinically method for reconstructing mainly comprises: sections bone-graft fusion internal fixation and artificial vertebral body replacement.Sections bone-graft fusion internal fixation as the standard method that existing cervical vertebra is rebuild, is to use from body or allograph bone to organize the damaged sections of filling, and additional simultaneously internal fixation carries out cervical stability and rebuilds.This method realizes the stability reconstruction of cervical vertebra by implantable bone and last the next interpyramidal bone fusion, eliminated pain, but this method makes the reconstruction sections completely lose mobility, influenced the mass motion function of cervical vertebra, simultaneously at a specified future date also can causing closes on that sections intervertebral disc stress is concentrated and the regression that causes.The artificial vertebral body replacement is another common method.The existing so far multiple design of artificial vertebral body, mostly there is the sections LOM in the stability of rebuilding cervical vertebra by bone-graft fusion or mode fixing certainly or additional internal fixation, the problem of neighbouring section intervertebral disc degeneration at a specified future date equally.Therefore, these two kinds of methods are not physiological reconstructions truly.Minority is considered restructure from motion and the artificial vertebral body that designs, all because its motion mode is different with the motion mode under the physiological conditions, or reason such as poor stability, cause failure eventually.Elasticity active type artificial vertebral body as designs such as domestic former woodss, based on the otch spring, furcella by the two ends platform carries out prosthese to be fixed, testing in vitro possesses anterior flexion and rear stretching, and the movable function of left and right sides lateral bending and longitudinal elasticity is implanted the rear stability deficiency but test and clinical practice all show prosthese, especially stretch after with lateral bending motion in, be prone to that prosthese tilts and displacement (consult reference paper 1 and 2:[list of references] 1, clinical anatomy magazine .1997,15,2:149-1522; 2, movable artificial vertebral body replacement therapy spinal fracture three examples. the journal .2000 of Henan Medical Univ., 35,2:166); And its degrees of motion is not to exist only in intervertebral space as under the normal condition, but is present between whole displacement zone.In sum, still do not have a kind of method can take into account stability and mobility so far, realize that really the physiological of cervical vertebra is rebuild.Have only " reproducing " articuli intervertebrales and vertebral body fully, recover the mobility of articuli intervertebrales, could realize truly that the physiological of cervical vertebra is rebuild.
Summary of the invention
This utility model purpose provides a kind of artificial cervical complex joint device, and it can make the full patient who excises of cervical vertebral body thorn recover the stability and the mobility of cervical vertebra, realizes physiological reconstruction truly.
The purpose of this utility model is to realize like this, design a kind of artificial cervical complex joint device, it is characterized in that: it is a symmetrical structure up and down, be connected with vertebral body parts 2 between two symmetric fixed parts 1 up and down, fixed part forward wing 4 has fixing hole, and fixed part basilar part 5 has ball head structure 6 at the center with fixed part forward wing 4 relative sides; Vertebral body parts 2 are symmetrical structure up and down, and there is arc cavity 7 its upper and lower surfaces; Vertebral body parts 2 two ends form ball-and-socket joint by arc cavity 7 and fixed part 1 ball head structure 6 pivot bush units respectively.
Described vertebral body parts 2 are that 2, two vertebral body parts 2 of two vertebral body parts connect into the vertebral body chain by vertebral body link 3, and vertebral body chain two ends are connected with fixed part 1 respectively, and type of attachment is ball head structure 6 and forms ball-and-socket joint with arc cavity 7 pivot bush units.
Described vertebral body link about in the of 3 both ends of the surface ball head structure 6 is arranged respectively; The ball head structure 6 of link 3 upper and lower end faces forms ball-and-socket joint with arc cavity 7 pivot bush units of two fixed parts 1 up and down respectively.
Described vertebral body parts 2 are vertebral body parts 2, and vertebral body parts 2 two ends are connected with fixed part 1 respectively, and type of attachment is ball head structure 6 and forms ball-and-socket joint with arc cavity 7 pivot bush units.
Described fixed part forward wing 4 has 3 fixing holes, and 3 fixing holes are arranged in parallel, and the elliptical aperture 8 of both sides is as installing and fixing screw 9, and middle lock hole 10 is as lock screw 11 is installed.
The fixed part basilar part 5 and ball head structure 6 opposite faces of described fixed part 1 evenly spray titanium porous coating 12.
Described vertebral body parts 2 are rectangular structure, the inner surface liner vinyon mortar 13 of top and bottom arc cavity 7, and there are bone grafting hole 14 lateral direction penetrating vertebral body parts, the 2 inner bone grafting pipelines that form two sides, and the two sides remainder has horizontal dentation anti-slip tank 15.
Described ball-and-socket joint has the rotation mobility of 10-15 degree in all directions.
There is coarse Margarita face on described dentation straight-line groove 15 surfaces.
The operation principle of this utility model artificial cervical complex joint device is: after it is implanted, fixing hole by fixed part forward wing 4 is implanted into hold-down screw to adjacent normal vertebral body, then in lock hole, pass the annular lock plate and implant lock screw, being secured to contracts decides the afterbody that panel edges is pressed hold-down screw, thereby obtains the stable at once of fixed part 1; Induce bone to grow into by the titanium porous coating of basilar part 4 ball head structures 6 dorsal parts and obtain at a specified future date stablizing.By the powerful frictional force of the coarse Margarita face in vertebral body parts 2 sides, reach the stable at once of vertebral body parts 2; The bone grafting part vertebral fusion of excision back two ends remnants entirely therewith in the bone grafting pipeline that connects by the side, and the bone of side Margarita face grows into, the long term that obtains vertebral body is stable.By both ball-and-socket joint designs of arc cavity 7 of vertebral body parts, make articuli intervertebrales be difficult to dislocate and obtain stable.
The beneficial effects of the utility model are, can recover the normal activity degree and the activity pattern of cervical vertebra sections when rebuilding cervical stability, and it can replace existing bone-graft fusion method becomes the standard method that clinical cervical vertebral body is rebuild.Make the full patient who excises of cervical vertebral body thorn recover the stability and the mobility of cervical vertebra, realize physiological reconstruction truly.
Description of drawings
Below in conjunction with the embodiment accompanying drawing this utility model is described further.
Fig. 1 is this utility model embodiment 1 generalized section;
Fig. 2 is this utility model embodiment 2 structural representations;
Fig. 3 is this utility model embodiment 2 generalized sections;
Fig. 4 is the vertical view of fixed part;
Fig. 5 is the schematic views of vertebral body parts;
Fig. 6 is the vertical view of vertebral body parts;
Fig. 7 is the cutaway view of vertebral body parts;
Fig. 8 is the profile of link.
Among the figure: 1, fixed part; 2, vertebral body parts; 3, vertebral body link; 4, fixed part forward wing; 5, fixed part basilar part; 6, ball head structure; 7, arc cavity; 8, elliptical aperture; 9, hold-down screw; 10, lock hole; 11, lock screw; 12, titanium porous coating; 13, vinyon mortar; 14, bone grafting hole; 15, dentation anti-slip tank; 16, annular lock plate.
The specific embodiment
This artificial cervical complex joint device, it is a symmetrical structure up and down, be connected with vertebral body parts 2 between two symmetric fixed parts 1 up and down, fixed part forward wing 4 has fixing hole, be used for fixing cervical vertebra and rebuild, fixed part basilar part 5 has ball head structure 6 at the center with fixed part forward wing 4 relative sides; Vertebral body parts 2 are symmetrical structure up and down, and there is arc cavity 7 its upper and lower surfaces; Vertebral body parts 2 two ends form ball-and-socket joint by arc cavity 7 and fixed part 1 ball head structure 6 pivot bush units respectively.
It is described that to be fixed on two vertebral body parts 2 between the fixed part 1 can be two vertebral body parts 2, two vertebral body parts 2 connect into the vertebral body chain by vertebral body link 3, vertebral body chain two ends are connected with fixed part 1 respectively, and type of attachment is ball head structure 6 and forms ball-and-socket joint with arc cavity 7 pivot bush units.The vertebral body link about in the of 3 both ends of the surface ball head structure 6 is arranged respectively; The ball head structure 6 of link 3 upper and lower end faces, arc cavity 7 pivot bush units with two fixed parts 1 up and down form ball-and-socket joint respectively; Being fixed on two vertebral body parts 2 between the fixed part 1 also can be vertebral body parts 2, and vertebral body parts 2 two ends are connected with fixed part 1 respectively, and type of attachment is ball head structure 6 and forms the ball-and-socket joint that can not dislocate with arc cavity 7 pivot bush units.Ball-and-socket joint is in the rotation mobility of all directions permission 10-15 degree.
Fixed part forward wing 4 has 3 fixing holes, and 3 fixing holes are arranged in parallel, and the elliptical aperture 8 of both sides is as installing and fixing screw 9, and middle lock hole 10 is as lock screw 11 is installed.The fixed part basilar part 5 and ball head structure 6 opposite faces of described fixed part 1 evenly spray titanium porous coating 12.
Described vertebral body parts 2 are rectangular structure, the inner surface liner vinyon mortar 13 of top and bottom arc cavity 7, and there are bone grafting hole 14 lateral direction penetrating vertebral body parts, the 2 inner bone grafting pipelines that form two sides, and the two sides remainder has horizontal dentation anti-slip tank 15.There is coarse Margarita face on dentation straight-line groove 15 surfaces.
Below in conjunction with description of drawings embodiment is described further, Fig. 1 is that the profile of the vertebral body chain of 1 liang of joint of embodiment vertebral body unit construction shows, fixed part 1 is L-shaped, fixed part forward wing 4 has fixing hole, being used for fixing cervical vertebra rebuilds, fixed part basilar part 5 has ball head structure 6 at the center with forward wing 4 relative sides, and ball head structure 6 is a segment shape of protruding as shown in the figure; Two vertebral body parts 2 are column structure, and it has arc cavity 7 in two bottom surfaces up and down; Two vertebral body parts 2 connect into the vertebral body chain by vertebral body link 3, the vertebral body link about in the of 3 both ends of the surface have ball head structure 6 respectively; Vertebral body chain two ends are connected with fixed part 1 respectively, and type of attachment is the ball-and-socket joint of ball head structure 6 and 7 formation of arc cavity.Hold fixed part 1 to constitute by fixed part forward wing 4, fixed part basilar part 5 and ball head structure 6 respectively end to end.Fixed part forward wing 4 parallel arranged have 3 holes, and both sides elliptical aperture 8 is for installing and fixing screw 9 usefulness, and middle lock hole 10 is for installing lock screw 11 usefulness.Hold-down screw 9 is inserted through fixed part forward wing 4 two side holes, and lock screw 11 is inserted through middle lock hole 10, prevents that hold-down screw 9 from extracting, and makes it integrated with ball head structure 6.Fixed part basilar part 4 evenly sprays titanium porous coating 12 with ball head structure 6 opposite faces, is used for sclerotin and grows into.Vertebral body parts 2 two ends central authorities are embedded with the vinyon mortar 13 that inner surface is a ball-and-socket type respectively, and ball head structure 6 embeds in the socket arrangement 7, forms the joint, can universal activity.Be the bone grafting hole 14 of a horizontal pipeline between the two sides in the middle of the vertebral body parts 2, as bone grafting.
When Fig. 2 showed single sections vertebral body reconstruction, as different from Example 1, whole device was made up of two fixed parts 1 and intermediary vertebral body parts 2.Hold fixed part 1 to constitute by fixed part forward wing 4, fixed part basilar part 5 and ball head structure 6 respectively end to end.Fixed part forward wing 4 parallel arranged have 3 holes, and both sides elliptical aperture 8 is for installing and fixing screw 9 usefulness, and middle lock hole 10 is for installing lock screw 11 usefulness.
Fig. 3 is this utility model embodiment 2 generalized sections, its vertebral body parts 2 between two fixed parts 1 connects vertebral body parts 2, hold-down screw 9 is inserted through fixed part forward wing 4 two side holes, lock screw 11 is inserted through middle lock hole 10, prevent that hold-down screw 9 from extracting, make it integrated with ball head structure 6.Fixed part basilar part 4 evenly sprays titanium porous coating 12 with ball head structure 6 opposite faces, is used for sclerotin and grows into.Vertebral body parts 2 two ends central authorities are embedded with the vinyon mortar 13 that inner surface is a ball-and-socket type respectively, and ball head structure 6 embeds and forms the joint in the socket arrangement 7, can universal activity.Be the bone grafting hole 14 of a horizontal pipeline between the two sides in the middle of the vertebral body parts 2, as bone grafting.
Fig. 4 is that the vertical view of fixed part 1 shows that 4 shape faces of fixed part forward wing are certain radian, can better fit with the cervical vertebral body leading edge.Hold-down screw 9 is settled perpendicular to fixed part forward wing 4.The annular lock plate places the lock hole superficial part, and the edge presses both sides hold-down screw 9 afterbodys, and lock screw 11 is passed annular lock plate 16 centers and implanted in the lock hole.
Fig. 5 is that the side view of vertebral body parts 2 shows that the dentation straight-line groove 15 that there is vertical shape the side of vertebral body parts 2 plays anti-skidding effect.The centre is the lateral opening bone grafting hole 14 of bone grafting pipeline.Side surface evenly sprays titanium porous coating 12, is used for sclerotin and grows into.Dentation anti-slip tank 15 surfaces and side remainder are coarse Margarita face.
Fig. 6 is that the vertical view of vertebral body parts 2 shows that vertebral body parts 2 two sides form serration and form dentation anti-slip tank 15, and the centre is arc cavity 7 openings.
Fig. 7 is that the front sectional elevation of vertebral body parts 2 shows, vertebral body vinyon mortar 13 structures up and down forms arc cavity 7, and the centre is lateral direction penetrating bone grafting hole, side 14.
Fig. 8 is that the profile of vertebral body link 3 shows, vertebral body link 3 is symmetric ball head structure 6 up and down.
Making material of the present utility model is vitallium metal and polyethylene vertebral body plastics mortar.
Adopt following method to use this device during operation: 1. row vertebral body thorn excised entirely after routine appeared the cervical spondylosis sections; 2. soleplate is prepared: excise under the upper vertebral body soleplate leading edge 1/3 and the next vertebral body and go up 1/3 projection sclerotin behind the soleplate, the polishing soleplate until with 4 complete close joining of fixed part basilar part; 3. implant fixed part 1: install lower end fixed part 1, be implanted into hold-down screw 9, lock screw 11 is installed in last the next vertebral body; 4. implant vertebral body parts 2: axially strut defect gap, implant vertebral body parts 2 between the remaining vertebral body in operation sections both sides, the ball head structure 6 of upper and lower side fixed part 1 is resetted enters in the arc cavity 7 with pleurocentrum parts 2 then; 5. implant vertebral body link 3: as being the full excision of multi-segmental vertebral body thorn, after then portion's fixed part 1 and vertebral body parts 2 being installed end to end by abovementioned steps, implant vertebral body link 3 between two vertebral body parts 2, ball head structure 6 is up and down resetted to be entered in the arc cavity 7 with pleurocentrum parts 2; This device installs.
The part that do not elaborate in this utility model is because what adopt is the technological means that industry technical staff uses always, and the parts that have are commercially available external members, so be not described further at this.
Claims (9)
1. artificial cervical complex joint device, it is characterized in that: it is a symmetrical structure up and down, be connected with vertebral body parts (2) between two symmetric fixed parts (1) up and down, fixed part forward wing (4) has fixing hole, and fixed part basilar part (5) has ball head structure (6) at the center with the relative side of fixed part forward wing (4); Vertebral body parts (2) are symmetrical structure up and down, and there is arc cavity (7) its upper and lower surfaces; Vertebral body parts (2) two ends form ball-and-socket joint by arc cavity (7) and fixed part (1) ball head structure (6) pivot bush unit respectively.
2. artificial cervical complex joint device according to claim 1, it is characterized in that: when described vertebral body parts (2) quantity is two, two vertebral body parts (2) connect into the vertebral body chain by vertebral body link (3), vertebral body chain two ends are connected with fixed part (1) respectively, and type of attachment is ball head structure (6) and forms ball-and-socket joint with arc cavity (7) pivot bush unit.
3. artificial cervical complex joint device according to claim 2 is characterized in that: described vertebral body link (3) both ends of the surface up and down has ball head structure (6) respectively; The ball head structure (6) of link (3) upper and lower end face forms ball-and-socket joint with arc cavity (7) pivot bush unit of two fixed parts (1) up and down respectively.
4. artificial cervical complex joint device according to claim 1, it is characterized in that: when described vertebral body parts (2) quantity is one, vertebral body parts (2) two ends are connected with fixed part (1) respectively, and type of attachment is ball head structure (6) and forms ball-and-socket joint with arc cavity (7) pivot bush unit.
5. artificial cervical complex joint device according to claim 1, it is characterized in that: described fixed part forward wing (4) has 3 fixing holes, 3 fixing holes are arranged in parallel, the elliptical aperture of both sides (8) is as installing and fixing screw (9), and middle lock hole (10) is as lock screw (11) is installed.
6. artificial cervical complex joint device according to claim 1 is characterized in that: the fixed part basilar part (5) of described fixed part (1) evenly sprays titanium porous coating (12) with ball head structure (6) opposite face.
7. artificial cervical complex joint device according to claim 1, it is characterized in that: described vertebral body parts (2) are rectangular structure, the inner surface liner vinyon mortar (13) of top and bottom arc cavitys (7), there is the inner bone grafting pipeline that forms of bone grafting hole (14) lateral direction penetrating vertebral body parts (2) two sides, and the two sides remainder has horizontal dentation anti-slip tank (15).
8. artificial cervical complex joint device according to claim 1 is characterized in that: described ball-and-socket joint has the rotation mobility of 10-15 degree in all directions.
9. artificial cervical complex joint device according to claim 7 is characterized in that: there is coarse Margarita face on described dentation anti-slip tank (15) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201649180U CN201040015Y (en) | 2006-12-31 | 2006-12-31 | Artificial vertebrae cervicables composite joint device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201649180U CN201040015Y (en) | 2006-12-31 | 2006-12-31 | Artificial vertebrae cervicables composite joint device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201040015Y true CN201040015Y (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201649180U Expired - Lifetime CN201040015Y (en) | 2006-12-31 | 2006-12-31 | Artificial vertebrae cervicables composite joint device |
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| CN (1) | CN201040015Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011015031A1 (en) * | 2009-08-06 | 2011-02-10 | Lei Wei | Artificial cervical vertebra composite joint |
| CN101019787B (en) * | 2006-12-31 | 2012-09-05 | 中国人民解放军第四军医大学 | Physiological cervical vertebral reconstructing system |
| US9700425B1 (en) | 2011-03-20 | 2017-07-11 | Nuvasive, Inc. | Vertebral body replacement and insertion methods |
| US9968460B2 (en) | 2013-03-15 | 2018-05-15 | Medsmart Innovation Inc. | Dynamic spinal segment replacement |
-
2006
- 2006-12-31 CN CNU2006201649180U patent/CN201040015Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101019787B (en) * | 2006-12-31 | 2012-09-05 | 中国人民解放军第四军医大学 | Physiological cervical vertebral reconstructing system |
| WO2011015031A1 (en) * | 2009-08-06 | 2011-02-10 | Lei Wei | Artificial cervical vertebra composite joint |
| US8613770B2 (en) | 2009-08-06 | 2013-12-24 | Wei Lei et al. | Artificial cervical vertebrae composite joint |
| US9700425B1 (en) | 2011-03-20 | 2017-07-11 | Nuvasive, Inc. | Vertebral body replacement and insertion methods |
| US10485672B2 (en) | 2011-03-20 | 2019-11-26 | Nuvasive, Inc. | Vertebral body replacement and insertion methods |
| US11389301B2 (en) | 2011-03-20 | 2022-07-19 | Nuvasive, Inc. | Vertebral body replacement and insertion methods |
| US9968460B2 (en) | 2013-03-15 | 2018-05-15 | Medsmart Innovation Inc. | Dynamic spinal segment replacement |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080326 |
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| EXPY | Termination of patent right or utility model |