CN105055055A - Bionic artificial vertebra with capacity of motion and capable of being implanted conveniently - Google Patents
Bionic artificial vertebra with capacity of motion and capable of being implanted conveniently Download PDFInfo
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- CN105055055A CN105055055A CN201510490539.4A CN201510490539A CN105055055A CN 105055055 A CN105055055 A CN 105055055A CN 201510490539 A CN201510490539 A CN 201510490539A CN 105055055 A CN105055055 A CN 105055055A
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- hypozygal
- portable plate
- upper joint
- plate
- arc
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Abstract
The invention discloses a bionic artificial vertebra with capacity of motion and capable of being implanted conveniently, and belongs to the technical field of medical apparatus for orthopedics. According to the technical scheme, the bionic artificial vertebra is composed of an upper joint body and a lower joint body, the periphery of the upper joint body and the periphery of the lower joint body are each composed of an annular titanium mesh supporting bone grafting ring, the upper joint body and the lower joint body are connected with a repaired vertebra, the lower end face of the upper joint body and the upper end face of the lower joint body are provided with an arc-shaped depression and an arc-shaped protrusion respectively, the curve radian of the arc-shaped depression is matched with the curve radian of the arc-shaped protrusion, and the circumference of the arc-shaped depression and the circumference of the arc-shaped protrusion are each provided with four ball sockets with small diameters, wherein each two ball sockets are opposite to each other, and each pair of opposite ball sockets with the small diameters are embedded with movable balls. According to the bionic artificial vertebra with the capacity of motion and capable of being implanted conveniently, the upper joint body and the lower joint body take the arc-shaped protrusion as a main shaft, the balls in the ball sockets on the periphery are taken as movable shafts, and protraction, retroflexion, left side bend, right side bend and rotation movements of vertebra segments can be completed; the height and flexibility of comminuted and blow-out vertebra fractures with different degrees can be effectively recovered, fixation is firm, and postoperative complications are few.
Description
Technical field
The present invention relates to a kind of biomimetic prosthetic vertebral body, belong to orthopedic medical device technical field.
Background technology
In orthopedic injury, spinal fracture accounts for 4.8% ~ 6.6% of whole body fracture dislocation with dislocation.Wherein compression fracture of spine accounts for 70% ~ 80% of whole spinal fracture, and mostly occurs in breast waist section, is about about 82.2%.The common male of spinal fracture is between twenty and fifty, how to be caused by indirect external force.And gerontal patient is because of self osteoporosis, therefore often just can there is compression fracture of spine without obvious External Force Acting or under only having slight External Force Acting, and mostly be pure vertebral compression fracture.
Along with aged tendency of population, old spinal fracture sickness rate rises year by year.Compression fracture of spine can merge neurologic defict, occurs corresponding nerve injury symptom, even the following paraplegia of lesion level.Particularly in fracture of cervical vertebra, have report to claim dislocation to be associated with spinal cord injury person up to 70%, severe patient is disabled even threat to life.And amyelia nerve injury person is only shown as to pain and the morphologic change of local, as ignored its pathogenic complexity, the not parallel prudent effective treatment of diagnosis in time, gently then leaves over chronic low back pain, affect daily life and work, heavy then may occur Delayed onset paralysis and cause permanent disbility.
At present, take vertebral body reconstruction art or adjacent vertebral bodies fusion to treat for there being the comminuted or bursting fracture of the vertebral body of surgical indication more, but the operation of routine only can in height recover vertebral body length, not there is mobility after the vertebral body of rebuilding or vertebral fusion, can say without motility, and disagree with body biomechanics structure, the later stage also has the complication such as adjacent vertebral bodies sections regression acceleration, ectopic ossification, apparatus abrasion of particles.Therefore the vertebral body reconstruction art adopted at present or adjacent vertebral bodies fusion can not reach satisfied therapeutic effect, become the difficult problem in vertebral body operation treatment, are extremely necessary to improve.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of biomimetic prosthetic vertebral body having mobility and conveniently insert, this artificial vertebral body has the dual-use function supported with movable, extenal fixation and bone grafting immobile phase is adopted to combine, more meet body biomechanics, comminuted or burst vertebral fracture can be made to obtain satisfiedly resetting and fixedly securing, also effectively can reduce post-operative complication, improve clinical efficacy.
The technical scheme solved the problems of the technologies described above is:
A kind of biomimetic prosthetic vertebral body that there is mobility and conveniently insert, it is made up of upper joint body and hypozygal body, upper joint body and hypozygal body are respectively cylinder, the diameter of cylinder matches with the external diameter being repaired vertebral body, the periphery of cylinder is made up of the titanium net strut grafting ring of annular, titanium net strut grafting ring there are the upper junction plate and the lower connecting plate that connect and be repaired vertebral body, the lower surface of upper joint body and the upper surface of hypozygal body are respectively circular upper joint portable plate and hypozygal portable plate, there are a circular arc depression upwards in upper joint portable plate central authorities, there are an arc-shaped convex upwards in hypozygal portable plate central authorities, the circular arc depression of upper joint portable plate matches with the crooked radian of the arc-shaped convex of hypozygal portable plate, upper joint portable plate and hypozygal portable plate also there are four minor diameter ball-and-sockets respectively, four ball-and-sockets of upper joint portable plate and hypozygal portable plate are relative between two at circumference uniform distribution around the circular arc depression of upper joint portable plate central authorities and the arc-shaped convex of hypozygal portable plate central authorities respectively, spheroid that can be movable is embedded with in every a pair relative minor diameter ball-and-socket.
The above-mentioned biomimetic prosthetic vertebral body that there is mobility and conveniently insert, one end that described titanium net strut grafting ring is relative with being repaired vertebral body is open shape, end face is dentation, suitably can prune according to the demand of patient, be applicable to dissimilar and individual each quasi-complexity vertebral fracture, titanium net is the distribution of Pedicellus et Pericarpium Trapae corrugated.
The above-mentioned biomimetic prosthetic vertebral body that there is mobility and conveniently insert, described upper junction plate and lower connecting plate are respectively along the axis of vertebral body, upper junction plate is connected with the bottom of the top of the titanium net strut grafting ring of upper joint body with the titanium net strut grafting ring of hypozygal body respectively with one end of lower connecting plate, the plate face of upper junction plate and lower connecting plate there is 2-3 screw, upper junction plate and lower connecting plate plate face curved with vertebral body outer rim mating shapes, upper junction plate and lower connecting plate are connected with the upper and lower being repaired vertebral body respectively.
The above-mentioned biomimetic prosthetic vertebral body that there is mobility and conveniently insert, the arc-shaped convex of described hypozygal portable plate is embedded in the circular arc depression of upper joint portable plate, and the height of the arc-shaped convex of hypozygal portable plate is greater than the degree of depth of the circular arc depression of upper joint portable plate.
The above-mentioned biomimetic prosthetic vertebral body having mobility and conveniently insert, diameter and the sphere diameter be embedded in ball-and-socket of the ball-and-socket of described upper joint portable plate and hypozygal portable plate match, and the degree of depth of ball-and-socket is less than the radius of ball-and-socket.
The invention has the beneficial effects as follows:
The present invention designs according to corpus vertebrae anatomical structure and classification of fracture, avoid conventional manual's vertebral body prosthesis art and interbody fusion only recovers vertebral height, does not possess activeness, with the contrary shortcoming of body biomechanics structure, compare with vertebral body reconstruction arts such as titanium cage, bone cements, then avoid bone cement side leakage risk, simplify operating procedure.Titanium net strut grafting ring of the present invention is combined with upper joint portable plate, hypozygal portable plate, extenal fixation is combined with bone grafting immobile phase, can Titanic micro-plates, also can alleviate later stage ectopic ossification, the post-operative complication such as contiguous vertebral body regression sedimentation, titanium net strut grafting ring end, in open shape, suitably can be pruned according to the demand of patient, be applicable to dissimilar and individual each quasi-complexity vertebral fracture.Upper joint body of the present invention and hypozygal body for main shaft with central arc-shaped convex, with the spheroid in the ball-and-socket of surrounding for movable axis, can complete the protracting of vertebral body sections, to bend afterwards, left and right lateral bending and rotary moveable.Under not pressurized or slight pressurized situation with central arc-shaped convex for main shaft can the protracting of complete independently vertebral body sections, to bend afterwards, left and right lateral bending is movable; In pressurized situation, surrounding spheroid can participate in having assisted the protracting of vertebral body sections, to bend afterwards, left and right lateral bending; When rotary moveable, with central arc-shaped convex for axis, surrounding spheroid can increase its motility, completes rotary moveable, and significantly reduces between upper joint body and hypozygal body and wear and tear.
The present invention is simple and reasonable, simple to operate flexibly, accurate positioning, fixation, replacement and fixation repeatedly can be reduced in art; Implant simple and flexible, compares Traditional Man vertebral body and interbody fusion and compares and have equal Fuding effect, can obviously strengthen its motility; Particularly rotary moveable is more flexible more meeting physical activity rule for artificial joint, can have efficient recovery comminuted burst vertebral fracture height in various degree and motility; Fixed, can early functional exercise, post-operative complication is few.
The present invention is the innovation to prosthetic vertebral replacement art, efficiently avoid the shortcoming of conventional vertebral body prosthesis fusion, solve the difficult problem do not solved for a long time, substantially reduce operating time and recovery time, effectively alleviate the misery of patient, there is good Social benefit and economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, labelling is as follows: upper joint body 1, hypozygal body 2, titanium net strut grafting ring 3, upper junction plate 4, lower connecting plate 5, upper joint portable plate 6, hypozygal portable plate 7, circular arc depression 8, arc-shaped convex 9, ball-and-socket 10, spheroid 11, attachment screw 12, vertebral body 13.
Detailed description of the invention
The present invention includes upper joint body 1, hypozygal body 2, upper joint body 1 and hypozygal body 2 form a movable joint, upper joint body 1 and hypozygal body 2 are respectively cylinder, the internal diameter of cylinder matches with the external diameter being repaired vertebral body 13, upper joint body 1 and hypozygal body 2 are connected with the vertebral body 13 be repaired respectively, make the vertebral body 13 be repaired not only have original height, can also carry out rotating and bending.
Upper joint body 1 and hypozygal body 2 are made up of titanium net strut grafting ring 3, upper junction plate 4, lower connecting plate 5, upper joint portable plate 6, hypozygal portable plate 7 respectively.
Show in figure, the periphery of the cylinder of upper joint body 1 and hypozygal body 2 is made up of the titanium net strut grafting ring 3 of annular.One end that titanium net strut grafting ring 3 is relative with being repaired vertebral body 13 is open shape, and end face is dentation, suitably can prune according to the demand of patient, is applicable to dissimilar and individual each quasi-complexity vertebral fracture, and titanium net is the distribution of Pedicellus et Pericarpium Trapae corrugated.
Show in figure, upper joint body 1 has with on the titanium net strut grafting ring 3 of hypozygal body 2 upper junction plate 4 and lower connecting plate 5 that are connected and are repaired vertebral body 13.Upper junction plate 4 and lower connecting plate 5 are respectively along the axis of vertebral body 13, upper junction plate 4 is connected with the bottom of the top of the titanium net strut grafting ring 3 of upper joint body 1 with the titanium net strut grafting ring 3 of hypozygal body 2 respectively with one end of lower connecting plate 5, the plate face of upper junction plate 4 and lower connecting plate 5 there is 2-3 screw, upper junction plate 4 and lower connecting plate 5 plate face curved with vertebral body 13 outer rim mating shapes, upper junction plate 4 and lower connecting plate 5 are connected and fixed with the upper and lower being repaired vertebral body 13 by the screw on plate face by attachment screw 12 respectively.
Show in figure, the lower surface of upper joint body 1 and the upper surface of hypozygal body 2 are respectively circular upper joint portable plate 6 and hypozygal portable plate 7.There are a circular arc depression 8 upwards in upper joint portable plate 6 central authorities, and there are an arc-shaped convex 9 upwards in hypozygal portable plate 7 central authorities, and the circular arc depression 8 of upper joint portable plate 6 matches with the crooked radian of the arc-shaped convex 9 of hypozygal portable plate 7.The arc-shaped convex 9 of hypozygal portable plate 7 is embedded in the circular arc depression 8 of upper joint portable plate 6, and the height of the arc-shaped convex 9 of hypozygal portable plate 7 is greater than the degree of depth of the circular arc depression 8 of upper joint portable plate 6.Like this, after arc-shaped convex 9 embeds circular arc depression 8, gap is had between the plate face of upper joint portable plate 6 and hypozygal portable plate 7, two plate faces can not contact friction, upper joint body 1 and hypozygal body 2 for main shaft with arc-shaped convex 9, can complete the protracting of vertebral body 13 sections, to bend afterwards, left and right lateral bending and rotary moveable.
Show in figure, upper joint portable plate 6 and hypozygal portable plate 7 also there are four minor diameter ball-and-sockets 10 respectively, four ball-and-sockets 10 of upper joint portable plate 6 and hypozygal portable plate 7 are relative between two at circumference uniform distribution around the circular arc depression 8 of upper joint portable plate 6 central authorities and the arc-shaped convex 9 of hypozygal portable plate 7 central authorities respectively, and being embedded with in every a pair relative minor diameter ball-and-socket 10 can the spheroid 11 of activity.Under not pressurized or slight pressurized situation, upper joint body 1 and hypozygal body 2 with arc-shaped convex 9 for main shaft can the protracting of complete independently vertebral body 13 sections, to bend afterwards, the activity of left and right lateral bending; In pressurized situation, surrounding spheroid 11 can participate in having assisted the protracting of vertebral body 13 sections, to bend afterwards, left and right lateral bending; When rotary moveable, with central arc-shaped convex 9 for axis, surrounding spheroid 11 can increase its motility, completes rotary moveable, and significantly reduces wearing and tearing between upper joint body 1 and hypozygal body 2.
Show in figure, diameter and spheroid 11 diameter be embedded in ball-and-socket 10 of ball-and-socket 10 match, and the degree of depth of ball-and-socket 10 is less than the radius of spheroid 11.After spheroid 11 embeds ball-and-socket, a part for the upper and lower of spheroid 11 in ball-and-socket 10, in the gap between upper joint portable plate 6 and hypozygal portable plate 7, the middle part of spheroid 11.Adopt such structure, can make between upper joint portable plate 6 and hypozygal portable plate 7, to carry out there be relatively rotating of angle of inclination, can not contact friction between plate face while tilt rotation.
Use procedure of the present invention is as follows:
A. sting except pathological changes or fractured vertebral body and remove adjacent between intervertebral disc after, measure defect length, the titanium net strut grafting ring 3 of artificial vertebral body pruned, to be applicable to dissimilar and individual each quasi-complexity vertebral fracture.
B. correctly place artificial vertebral body, observe stable after, the broken sclerotin of the health removed will be stung in a step or artificial allograph bone is backfilled in titanium net strut grafting ring 3.
C. again observe after measuring vertebral height satisfaction, upper junction plate 4, lower connecting plate 5 closely should be attached to vertebral body dorsal part name, and after boring, chaining pin is measured, and the attachment screw 12 choosing equivalent specifications is fixed.
D. upper junction plate 4, lower connecting plate 5 is tightened successively.
E. have an X-rayed.
Claims (5)
1. the biomimetic prosthetic vertebral body that there is mobility and conveniently insert, it is characterized in that: it is made up of upper joint body (1) and hypozygal body (2), upper joint body (1) and hypozygal body (2) are respectively cylinder, the internal diameter of cylinder matches with the external diameter being repaired vertebral body (13), the periphery of cylinder is made up of titanium net strut grafting ring (3) of annular, titanium net strut grafting ring (3) there is connection be repaired upper junction plate (4) and the lower connecting plate (5) of vertebral body (13), the lower surface of upper joint body (1) and the upper surface of hypozygal body (2) are respectively circular upper joint portable plate (6) and hypozygal portable plate (7), there are circular arc depression (8) upwards in upper joint portable plate (5) central authorities, there are an arc-shaped convex (9) upwards in hypozygal portable plate (7) central authorities, circular arc depression (8) of upper joint portable plate (5) matches with the crooked radian of the arc-shaped convex (9) of hypozygal portable plate (7), upper joint portable plate (6) and hypozygal portable plate (7) also have four minor diameter ball-and-sockets (10) respectively, four ball-and-sockets (10) of upper joint portable plate (6) and hypozygal portable plate (7) are relative between two at circumference uniform distribution around circular arc depression (8) of upper joint portable plate (6) central authorities and the central arc-shaped convex (9) of hypozygal portable plate (7) respectively, spheroid (11) that can be movable is embedded with in every a pair relative ball-and-socket (10).
2. the biomimetic prosthetic vertebral body having mobility and conveniently insert according to claim 1, is characterized in that: described titanium net strut grafting ring (3) one end relative with being repaired vertebral body (13) is in open shape, and end face is dentation.
3. the biomimetic prosthetic vertebral body that there is mobility and conveniently insert according to claim 2, it is characterized in that: described upper junction plate (4) and lower connecting plate (5) are respectively along the axis of vertebral body (13), upper junction plate (4) is connected with the bottom of the top of titanium net strut grafting ring (3) of upper joint body (1) with titanium net strut grafting ring (3) of hypozygal body (2) respectively with one end of lower connecting plate (5), the plate face of upper junction plate (4) and lower connecting plate (5) there is 2-3 screw, upper junction plate (4) and lower connecting plate (5) plate face curved with vertebral body outer rim mating shapes, upper junction plate (4) is connected with the upper and lower being repaired vertebral body (13) respectively with lower connecting plate (5).
4. the biomimetic prosthetic vertebral body that there is mobility and conveniently insert according to claim 3, it is characterized in that: the arc-shaped convex (9) of described hypozygal portable plate (7) is embedded in circular arc depression (8) of upper joint portable plate (6), the height of the arc-shaped convex (9) of hypozygal portable plate (7) is greater than the degree of depth of circular arc depression (8) of upper joint portable plate (6).
5. the biomimetic prosthetic vertebral body that there is mobility and conveniently insert according to claim 4, it is characterized in that: diameter and spheroid (11) diameter be embedded in ball-and-socket (10) of the ball-and-socket (10) of described upper joint portable plate (6) and hypozygal portable plate (7) match, and the degree of depth of ball-and-socket (10) is less than the radius of spheroid (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510490539.4A CN105055055B (en) | 2015-08-12 | 2015-08-12 | A kind of biomimetic prosthetic centrum that with mobility and conveniently inserts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510490539.4A CN105055055B (en) | 2015-08-12 | 2015-08-12 | A kind of biomimetic prosthetic centrum that with mobility and conveniently inserts |
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| Publication Number | Publication Date |
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| CN105055055A true CN105055055A (en) | 2015-11-18 |
| CN105055055B CN105055055B (en) | 2017-03-15 |
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| CN201510490539.4A Expired - Fee Related CN105055055B (en) | 2015-08-12 | 2015-08-12 | A kind of biomimetic prosthetic centrum that with mobility and conveniently inserts |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108245289A (en) * | 2018-01-05 | 2018-07-06 | 广州中国科学院工业技术研究院 | A kind of implantable interverbebral disc |
| CN109937013A (en) * | 2016-09-14 | 2019-06-25 | 直观外科手术操作公司 | Joint assembly with intersecting axis flexural pivot |
| WO2021114577A1 (en) * | 2019-12-10 | 2021-06-17 | 佛山市逸合生物科技有限公司 | Movable intervertebral disc prosthesis |
| CN113520678A (en) * | 2021-06-30 | 2021-10-22 | 右江民族医学院附属医院 | Titanium mesh bone grafting fixing device |
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| CN105055055B (en) | 2017-03-15 |
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