CN106510905A - Stable and adjustable artificial vertebral body - Google Patents
Stable and adjustable artificial vertebral body Download PDFInfo
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- CN106510905A CN106510905A CN201611038312.7A CN201611038312A CN106510905A CN 106510905 A CN106510905 A CN 106510905A CN 201611038312 A CN201611038312 A CN 201611038312A CN 106510905 A CN106510905 A CN 106510905A
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- vertebral body
- hypocentrum
- connection end
- retaining ring
- adjustable artificial
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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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
-
- 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
-
- 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
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurology (AREA)
- Prostheses (AREA)
Abstract
The invention provides a stable and adjustable artificial vertebral body. The artificial vertebral body is used for being implanted into a human body vertebral body. The artificial vertebral body comprises an upper vertebral body, a lower vertebral body and a locking part. The upper vertebral body is inserted into the lower vertebral body, and a limiting part is arranged between the upper vertebral body and the lower vertebral body. The locking part comprises a locking nut and a locking ring, the lower vertebral body is in threaded connection with the locking nut, the upper vertebral body penetrates into the locking nut, and the upper vertebral body can be axially adjusted. The locking ring is arranged in the locking nut, the locking ring is an elastic part, and the locking ring can elastically abut against the side wall of the upper vertebral body. The upper vertebral body is adjustable relative to the locking part, the artificial vertebral body can be correspondingly adjusted according to the requirements of different vertebral body heights, and the requirements of subtotal excision surgery of one or more vertebral bodies are met. The upper vertebral body and the lower vertebral body are fixed through the locking ring, and the problem that an artificial vertebral body retracts back after suffering from external force is solved.
Description
Technical field
The present invention relates to the technical field of artificial cervical vertebral body, more particularly to can adjust vertically, itself fixed form it is steady
Qualitative good artificial cervical vertebral body.
Background technology
Cervical spondylosis are the major fields in spinal surgery, for the operative treatment of various cervical spondylosis patients, especially
The pathological changes such as cervical spondylosiss and fracture of cervical vertebra, infection, tumor caused by prolapse of cervical intervertebral disc, the key one of operation is decompression, needs solution
Except compressing spinal cord or the factor of nerve root, to promote the recovery early of postoperative nerve function；Two is stable, by all kinds
Fusion, using different implantation materials rebuild postoperative surgical sections at once and long-time stability.
The artificial vertebral bodies such as existing X-Mesh, Synex can replace impaired vertebral body, by the strutted mechanism of itself,
To adapt to the height requirement of different vertebral bodys, cause artificial vertebral body to be vulnerable to external force and rebound phenomenon occurs.By middle bone grafting, realize
With neighbouring interpyramidal fusion, and the auxiliary with reference to front road or the way of escape fixes.But existing artificial cervical vertebral body lacks
Fix with upper and lower adjacent vertebra, artificial vertebral body easily occur and loosen and deviate from, need other front roads or fracture or dislocation is used in combination simultaneously
Device, causes operating time and damages to increase, and post-operative complication increases, stability at later stage difference etc..Aid in front road titanium plate or screw-rod
Fixation is eccentricity and fixes, and there is the complication such as stress shielding and Unstable internal fixation, spinal biomechanicses performance is had necessarily
Impact.And the complication such as front road titanium plate has certain thickness, can cause after inserting, dysphagia.Front road artificial vertebral body is upper and lower
The syncretizing effect of surface and adjacent vertebral bodies is poor, and the later stage is susceptible to bone resorption, causes loosening.
The content of the invention
It is an object of the invention to overcome the shortcoming of prior art, there is provided one kind can be adjusted vertically, itself fixation side
The artificial vertebral body of formula good stability.
For solving the problems, such as that artificial vertebral body is subject to external force that retraction occurs, and existing artificial vertebral body needs to use auxiliary solid
Determine device, cause the technical problem more than operating time length, wound increase, complication.
Present invention employs following technical measures：
A kind of adjustable artificial vertebral body, for being implanted into corpus vertebrae, including upper vertebral body, hypocentrum and locking member, the upper vertebra
Body is plugged in the hypocentrum, is provided with locating part between the upper vertebral body and the hypocentrum, and the locking member includes locking
Nut and retaining ring, the hypocentrum are threadedly coupled with the locking nut, and the upper vertebral body is located in the locking nut,
The upper vertebral body can be adjusted vertically；The retaining ring is located in locking nut, the retaining ring be elastic component, the retaining ring
Elasticity is pressed on the side wall of the upper vertebral body.
The present invention can also be further perfect by following technical measures：
Used as further improving, the hypocentrum is provided with through hole, and the upper vertebral body is correspondingly provided with stopper slot, and the locating part is passed through
The through hole is coordinated with the stopper slot, and the stopper slot limits the scope that the upper vertebral body is axially moveable.
As further improving, dashpot in the retaining ring, is offered, the dashpot opening up or down,
The opening up dashpot is arranged alternately successively with the downward opening dashpot, the middle convex of the retaining ring
Rise, the two ends necking of the retaining ring.
Used as further improving, the medial surface of the retaining ring is corrugated surface.
Used as further improving, the upper vertebral body is hollow structure, is provided with connection end at the top of the upper vertebral body, described
The top surface of upper connection end is cambered surface；The hypocentrum is hollow structure, and the bottom of the hypocentrum is provided with lower connection end, it is described under
The bottom surface of connection end is inclined-plane.
Used as further improving, the cambered surface includes multiple straightways, and the 5th straightway in the cambered surface is oblique with described
Angle between face is C, wherein, 10 °≤C≤20 °.
As further improving, on the cambered surface and the inclined-plane, tooth-shape structure is respectively equipped with.
Used as further improving, the cambered surface has surface-treated layer respectively with the inclined-plane, and the surface-treated layer is in
Tooth-shape structure, the surface-treated layer have densely covered hole.
As further improving, also including connector, the upper connection end is respectively equipped with the lower connection end and is leaned outward
Oblique fixing hole, the connector are connected through fixing hole with corpus vertebrae.
As further improving, including four connectors, be divided into two groups and the upper connection end be respectively provided at the lower company
Connect on end, per group of each two connector, the angle between same group of two connectors is B, wherein, 0 °≤B≤10 °；It is described
The angle of connector relative level is A, wherein, 10 °≤A≤20 °.
As further improving, on the upper vertebral body and the side wall of the hypocentrum, bone grafting window, the bone grafting is offered
In matrix distribution, the bone grafting window assumes diamond in shape window.
Compared with prior art, the present invention has advantages below：
1st, will be upper vertebral body relative locking member adjustable so that artificial vertebral body can be according to the demand of different vertebral heights after vertebral resection
It is corresponding to adjust, meet the demand of single and multiple Subtotal vertebrectomy operations.And pass through retaining ring by upper vertebral body and hypocentrum
It is fixed, have the advantages that self stability is good, solve the problems, such as that artificial vertebral body is subject to external force that retraction occurs.
The 2nd, retaining ring is set to the structure of middle outwardly convex, and reasonable layout dashpot successively.So that retaining ring
Upper vertebral body and hypocentrum are fixed after by lower effective crimp, it is ensured that highly stable after regulation.
3rd, the medial surface of retaining ring is set to into corrugated surface so that frictional force during retaining ring generation elastic deformation with upper vertebral body
Increase, the stability that vertebral body is fixed with hypocentrum in raising.
4th, the top surface of upper vertebral body is set to into cambered surface, increases the contact area of vertebral body and corpus vertebrae, increase bone long
The area for entering, allows to fix and more stablize distribution of force in the later stage also than more uniform.
5th, the bottom surface of hypocentrum is set to into inclined-plane, and C angles are formed with the 5th straightway of upper vertebral body.So that artificial vertebral body
Two end faces at an angle, with corpus vertebrae formed angled support mode, effectively prevent artificial vertebral body displacement, loosening.
6th, tooth-shape structure is respectively equipped with cambered surface and inclined-plane, by designing using pointed tooth, with anti-heavy pressure and anti-skidding work
With the Initial stability after increase implantation.
7th, by process of surface treatment, there is in cambered surface with inclined-plane surface-treated layer, the surface-treated layer tool respectively
There are bone conduction, self-bone grafting, osteoblastic proliferation, osteoblast differentiation.The surface-treated layer has the hole for gathering,
Described hole has further facilitation to bone conduction, self-bone grafting, osteoblastic proliferation, osteoblast differentiation.So that and vertebra
The Place cell adhesive capacity of body contact is strong, promotes Bone Ingrowth by surface-treated layer, effectively accelerates artificial vertebral body and human body vertebra
The bone fusion of body, accelerates the rehabilitation duration of patient.
8th, by directly arranging connector on upper vertebral body and hypocentrum, and the angle of connector relative level is A angles
Degree, the angle between same group of two connectors is B angles.Fixed using centrality and the design of zero incisura is reduced to gas around
The stimulation of the tissues such as pipe, esophaguses, need not aid in the fixation of titanium plate, reduce postoperative dysphagia incidence rate.With operation wound it is little,
Short, easily operated, little to the damaging surrounding tissue advantage of operating time.
Description of the drawings
Accompanying drawing 1 is the schematic diagram in adjustable artificial vertebral body implantation corpus vertebrae of the invention；
Accompanying drawing 2 is the decomposing schematic representation of adjustable artificial vertebral body shown in accompanying drawing 1；
Accompanying drawing 3 is the rearview of adjustable artificial vertebral body shown in accompanying drawing 2；
Accompanying drawing 4 is the right view of adjustable artificial vertebral body shown in accompanying drawing 2；
Accompanying drawing 5 is the main sectional view of adjustable artificial vertebral body shown in accompanying drawing 2；
Accompanying drawing 6 is contact area schematic diagram when upper vertebral body is contacted with corpus vertebrae shown in accompanying drawing 2；
Accompanying drawing 7 is the partial schematic diagram of top surface in adjustable artificial vertebral body shown in accompanying drawing 5.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Refer to Fig. 1, a kind of adjustable artificial vertebral body 100 is respectively arranged at two ends with connection end 11 and lower connection end
21, the upper connection end 11 is respectively equipped with outward-dipping fixing hole 111,211 with the lower connection end 21.Including connector
30, the connector 30 is connected through fixing hole 111,211 with corpus vertebrae 200, and the connector 30 can specifically select spiral shell
Nail, bolt etc..
The connector 30 mainly has two kinds with the connected mode of fixing hole 111,211, and a kind of is universal attachment structure,
The angle of nail can be adjusted in implantation process according to the practical situation of patient；Another kind is the connection knot of fixed angle
Structure, 30 groups of the connector enter the angle in fixation after fixing hole 111,211, can be selected as needed before surgery.
Refer to Fig. 4, it is preferred that including four connectors 30, be divided into two groups and be respectively provided at the upper connection end 11 and institute
State on lower connection end 21, per group of each two connector 30.Angle between same group of two connectors 30 is B, wherein, 0 °≤
B≤10°；It is furthermore preferred that 6 °≤B≤9 °.Wherein, the axis of same group of two connectors 30 is in the same plane, folder
Angle B refers to the angle between two axis.Fig. 3 is refer to, the angle of 30 relative level of the connector is A, wherein, 10 °
≤A≤20°；It is furthermore preferred that 15 °≤A≤20 °.Wherein, included angle A refers to the angle of the axis relative level of connector 30.
By directly arranging connector 30 on artificial vertebral body 100, and the angle of 30 relative level of connector is A angles
Degree, the angle between same group of two connectors 30 is B angles.Fixed using centrality and the design of zero incisura, with once
Stably good advantage, need not aid in titanium plate to fix, and reduce the stimulation to organizing before the vertebras such as peripheral airways, esophaguses, reduce postoperative gulping down
The difficult incidence rate of pharynx.Have the advantages that operation wound is little, operating time is short, easily operated, little to damaging surrounding tissue.
Fig. 2 and Fig. 5 is refer to, adjustable artificial vertebral body 100 includes vertebral body 10, hypocentrum 20, locking member 40 and limit
Position part 50, the locking member 40 include locking nut 41 and retaining ring 42.The hypocentrum 20 and 41 screw thread of the locking nut
Connection, the upper vertebral body 10 are located in the locking nut 41, and the upper vertebral body 10 can be adjusted vertically.The retaining ring 42
It is located in locking nut 41, the retaining ring 42 is elastic component, and 42 elasticity of the retaining ring is pressed on the side of the upper vertebral body 10
On wall.
Fig. 2 is refer to, the upper vertebral body 10 includes connection end 11 and upper vertebra portion 12, offered in the upper vertebra portion 12 solid
Determine groove 123, the lateral wall in the upper vertebra portion 12 is corrugated surface.The hypocentrum 20 includes lower connection end 21 and lower vertebra portion 22, institute
State and in lower vertebra portion 22, offer through hole 223, the locating part 50 passes through the through hole 223 and 123 tight fit of the fixing groove.
Will be 10 relative locking member 40 of upper vertebral body adjustable so that artificial vertebral body 100 can be according to the demand of different vertebral heights
It is corresponding to adjust, meet the demand of single and multiple Subtotal vertebrectomy operations.And will be upper with locating part 50 by retaining ring 42
Vertebral body 10 is fixed with hypocentrum 20, solves the problems, such as that artificial vertebral body 100 is subject to external force that retraction occurs.
Fig. 2 is refer to, in square wave configuration, the retaining ring 42 includes multiple U opening up successively to the retaining ring 42
Type unit 421 and downward opening U-shaped unit 421, the middle outwardly convex of the retaining ring 42, the two ends of the retaining ring 42
Necking.Retaining ring 42 is set to into the structure of middle outwardly convex, and the square wave configuration of reasonable layout breach successively.So that lock
Upper vertebral body 10 is fixed after by lower effective crimp by tight ring 42 with hypocentrum 20, it is ensured that highly stable after regulation.And
During regulation, when the locking nut 41 is not coordinated with the hypocentrum 20, the retaining ring 42 is not deformed so that on described
Vertebral body 10 smoothly can be adjusted.
Refer to Fig. 5, the medial surface 422 of the retaining ring 42 is corrugated surface, 122 phase of corrugated surface with the upper vertebra portion 12
Contact, can produce larger frictional force.The medial surface 422 of retaining ring 42 is set to into corrugated surface so that retaining ring 42 occurs elasticity
Increase with the frictional force of upper vertebral body 10 during deformation, the stability that vertebral body 10 is fixed with hypocentrum 20 in raising.
Fig. 5 is refer to, the upper vertebral body 10 is structure as a whole, the upper vertebral body 10 is hollow structure.The hypocentrum 20
It is structure as a whole, the hypocentrum 20 is hollow structure.The upper vertebral body 10 is adopted into hollow design with the hypocentrum 20
Structure, increased the comprcssive strength between artificial vertebral body 100 and corpus vertebrae 200.
Fig. 2 is refer to, the top of the upper vertebral body 10 is provided with connection end 11, and the top surface of the upper connection end 11 is arc
Face 112.The bottom of the hypocentrum 20 is provided with lower connection end 21, and the bottom surface of the lower connection end 21 is inclined-plane 212 so that artificial
Vertebral body 100 can be with the radian energy good fit of adjacent corpus vertebrae 200.Fig. 3 is refer to, the cambered surface 112 includes multiple straight
Line segment, the cambered surface 112 are the cambered surfaces formed by multiple straight sections obtained by the vertebral body data acquisition of different human body
112, the middle part of the arc is slightly raised upwards.Fig. 4 is refer to, the cambered surface 112 is also presented camber line in right view, it is seen that
The cambered surface 112 is the arcuate structure of various dimensions.Fig. 6 is refer to, in embodiment, the upper vertebral body 10 and corpus vertebrae 200
Contact area 201 accounts for the 2/3 or so of 200 face of corpus vertebrae.The top surface of upper vertebral body 10 is set to into cambered surface 112, vertebral body is increased
10 with the contact area of corpus vertebrae 200, increase the area of Bone Ingrowth, allow to fix and more stablize distribution of force in the later stage and also compare
Averagely.
Fig. 3 is refer to, the angle between the 5th straightway 1121 and the inclined-plane 212 in the cambered surface 112 is C, its
In, 10 °≤C≤20 °；It is furthermore preferred that 13 °≤C≤18 °.Such as Fig. 3 front view projection patterns, the cambered surface 112 is on the projection surface
In the camber line of formation, the 5th straightway 1121 refer to 212 incline direction of the inclined-plane conversely, and relative level angle of inclination most
A big straightway.The bottom surface of hypocentrum 20 is set to into inclined-plane 212, and C is formed with the 5th straightway 1121 of upper vertebral body 10
Angle.So that two end faces of artificial vertebral body 100 are at an angle, angled support mode is formed with corpus vertebrae 200, it is effectively anti-
Only 100 displacement of artificial vertebral body, loosening.
Fig. 7 is refer to, on the cambered surface 112 and the inclined-plane 212, tooth-shape structure 113,213 is respectively equipped with, by adopting
Pointed tooth is designed so that artificial vertebral body 100 bear a heavy burden after can preferably with upper and lower soleplate intercalation, increase stability at once.And profile of tooth
Structure can reduce the pressure of single tooth-shape structure, it is to avoid the subsidence problems of traditional titanium cage..
Fig. 7 is refer to, the cambered surface 112 has surface-treated layer 114, the surface treatment respectively with the inclined-plane 212
Layer 114 is in tooth-shape structure.By process of surface treatment, one layer of surface-treated layer is formed in cambered surface 112 with inclined-plane 212 respectively
114, the surface-treated layer 114 has bone conduction, self-bone grafting, osteoblastic proliferation, the effect of osteoblast differentiation.So that with
The Place cell adhesive capacity of vertebral body contact is strong, is capable of growing into for stimulating osteoblast, effectively accelerates artificial vertebral body 100 and human body
The bone fusion of vertebral body 200, it is to avoid Unstable internal fixation, accelerates the rehabilitation duration of patient.
Fig. 7 is refer to, the surface-treated layer 114 has the hole 1141 for gathering, and described hole 1141 is to bone conduction, bone
Induction, osteoblastic proliferation, osteoblast differentiation have further facilitation.Preferably, the composition of described hole 1141 is similar
Cellular structure.
Fig. 2 is refer to, on the upper vertebral body 10 and the side wall of the hypocentrum 20, bone grafting window 121,221 is offered.It is logical
Cross bone grafting window 121,221 is opened up on upper vertebral body 10 with hypocentrum 20, the hollow structure with close vertebral body 10 and hypocentrum 20, just
In implantable artificial bone, increase the comprcssive strength of artificial vertebral body 100, and convenient observation bone grafting situation.Preferably, the bone grafting window
121st, 221 in matrix distribution, and the bone grafting window 121,221 assumes diamond in shape.Bone grafting window 121,221 is set to into rhombus, diamond structure exists
Two symmetrical gusseteds are formed when pressurized, and there is good stability.The simultaneously square on upper vertebral body 10 with hypocentrum 20
The bone grafting window 121,221 of battle array distribution rhombus, can play counter-flush.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements done etc. are should be included within the scope of protection of the invention.
Claims (10)
1. the adjustable artificial vertebral body of a kind of homeostasis, for being implanted into corpus vertebrae, it is characterised in that including upper vertebral body, under
Vertebral body and locking member, the upper vertebral body are plugged in the hypocentrum, are provided with spacing between the upper vertebral body and the hypocentrum
Part, the locking member include locking nut and retaining ring, and the hypocentrum is threadedly coupled with the locking nut, the upper vertebral body
It is located in the locking nut, the upper vertebral body can be adjusted vertically；The retaining ring is located in locking nut, the locking
Ring is elastic component, and the locking ring resilience is pressed on the side wall of the upper vertebral body.
2. the adjustable artificial vertebral body of homeostasis according to claim 1, it is characterised in that the hypocentrum is provided with logical
Hole, the upper vertebral body are correspondingly provided with stopper slot, and the locating part is coordinated through the through hole with the stopper slot, the stopper slot
Limit the scope that the upper vertebral body is axially moveable.
3. the adjustable artificial vertebral body of homeostasis according to claim 1, it is characterised in that open up in the retaining ring
There is a dashpot, the dashpot opening up or down, the opening up dashpot is downward opening slow with described
Jet-bedding is arranged alternately successively, the middle outwardly convex of the retaining ring, the two ends necking of the retaining ring.
4. the adjustable artificial vertebral body of homeostasis according to claim 3, it is characterised in that the inner side of the retaining ring
Face is corrugated surface.
5. the adjustable artificial vertebral body of homeostasis according to claim 1, it is characterised in that the upper vertebral body is hollow
Structure, is provided with connection end at the top of the upper vertebral body, the top surface of the upper connection end is cambered surface；The hypocentrum is hollow knot
Structure, the bottom of the hypocentrum are provided with lower connection end, and the bottom surface of the lower connection end is inclined-plane.
6. the adjustable artificial vertebral body of homeostasis according to claim 5, it is characterised in that the cambered surface includes multiple
Straightway, the angle between the 5th straightway and the inclined-plane in the cambered surface is C, wherein, 10 °≤C≤20 °.
7. the adjustable artificial vertebral body of homeostasis according to claim 5, it is characterised in that the cambered surface with it is described tiltedly
Tooth-shape structure is respectively equipped with face.
8. the adjustable artificial vertebral body of homeostasis according to claim 7, it is characterised in that the cambered surface with it is described tiltedly
Face has surface-treated layer respectively, and in tooth-shape structure, the surface-treated layer has densely covered hole to the surface-treated layer.
9. the adjustable artificial vertebral body of homeostasis according to claim 5, it is characterised in that also including connector, institute
Stating connection end and outward-dipping fixing hole being respectively equipped with the lower connection end, the connector is through fixing hole and human body vertebra
Body connects.
10. the adjustable artificial vertebral body of homeostasis according to claim 9, it is characterised in that including four connectors,
It is divided into two groups to be respectively provided on the upper connection end and the lower connection end, per group of each two connector, same group of two companies
Angle between fitting is B, wherein, 0 °≤B≤10 °；The angle of the connector relative level is A, wherein, 10 °≤A≤
20°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611038312.7A CN106510905A (en) | 2016-11-23 | 2016-11-23 | Stable and adjustable artificial vertebral body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611038312.7A CN106510905A (en) | 2016-11-23 | 2016-11-23 | Stable and adjustable artificial vertebral body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106510905A true CN106510905A (en) | 2017-03-22 |
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| CN109077835A (en) * | 2018-10-26 | 2018-12-25 | 北京爱康宜诚医疗器材有限公司 | Centrum prosthese |
| CN110141405A (en) * | 2019-06-21 | 2019-08-20 | 上海长征医院 | Upper cervical spine artificial vertebral body and upper cervical spine implanting device |
| CN110141406A (en) * | 2019-06-21 | 2019-08-20 | 上海长征医院 | Thoracolumbar disk implantation piece and Thoracolumbar disk artificial vertebral body |
| US10687960B2 (en) | 2017-04-25 | 2020-06-23 | Second Affiliated Hospital Of Second Military Mediccal University, Shanghai | Assembled vertebral body |
| CN115670758A (en) * | 2022-12-28 | 2023-02-03 | 北京爱康宜诚医疗器材有限公司 | Adjustable artificial vertebral body |
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Application publication date: 20170322 |