CN109124750A - A kind of bone plate, Orthopedic fixation device and preparation method thereof - Google Patents
A kind of bone plate, Orthopedic fixation device and preparation method thereof Download PDFInfo
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- CN109124750A CN109124750A CN201810887505.2A CN201810887505A CN109124750A CN 109124750 A CN109124750 A CN 109124750A CN 201810887505 A CN201810887505 A CN 201810887505A CN 109124750 A CN109124750 A CN 109124750A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
- A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/003—Pressing by means acting upon the material via flexible mould wall parts, e.g. by means of inflatable cores, isostatic presses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00526—Methods of manufacturing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/0088—Material properties ceramic
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- Health & Medical Sciences (AREA)
- Ceramic Engineering (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Surgery (AREA)
- Manufacturing & Machinery (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Heart & Thoracic Surgery (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses a kind of bones plate, Orthopedic fixation device and preparation method thereof, the bone plate includes the first surface for contacting human body bone, bone plate further includes at least one holding part, and holding part is silicon nitride ceramics for accommodating fixing piece, the material of bone plate.By the above-mentioned means, the present invention can be improved the biocompatibility of Orthopedic fixation device.
Description
Technical field
The present invention relates to orthopaedic technique fields, more particularly to a kind of bone plate, Orthopedic fixation device and preparation method thereof.
Background technique
Fracture is illness more typical on Orthopedic Clinical, is needed to connect knochenbruch using fixed device, existing orthopaedics
Fixed device is usually made of metal, and because the fixation device of metal material has, intensity is high, at low cost, technical maturity
The features such as, it is current major product.
But present inventor is in long-term R&D process, finding the fixation device of metal material, there is also certain
Defect.The first, the amalgamation of the primary bone of metal and human body is poor, and the mismatch of this mechanical performance will lead to stress distribution not
Uniformly, fixed device and bone generate relative motion when making loaded, so as to cause the loosening or dislocation of fixed device.Meanwhile stress
Occlusion effect also results in osteoporosis, bone resorption or osteanabrosis, is easy to appear secondary fracture.Further, since lacking enough
Mechanical stress stimulation is not easy to form poroma in fracture, keeps healing stage elongated；Further more, the fracture inside-fixture of rigidity can also make
Initial stage bony union process lag.The second, the amalgamation of metal and tissue is poor.Histocompatbility difference is because in metal
The corrosion of glove, the i.e. release of metal ion；The metal ion of release can bring a series of adverse reaction.Such as crome metal,
Nickel, mercury, gold, platinum, barium etc. will cause allergic reaction, such as anaphylactic shock；Cobalt, chromium, nickel are haptens；Tungsten, vanadium, nickel, cobalt tool
There is carcinogenicity, and existing stainless steel inside-fixture causes the report of malignant tumour in animal and human body；Metal inside-fixture material
Material can also cause local inflammatory reaction and tissue necrosis.Therefore need to develop the better Orthopedic fixation device of biocompatibility.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of bone plate, Orthopedic fixation device and preparation method thereof, energy
Enough improve the biocompatibility of Orthopedic fixation device.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of bone plate, the synthetism are provided
Plate includes the first surface for contacting human body bone, and bone plate further includes at least one holding part, and holding part is for accommodating fixation
Part, the material of bone plate are silicon nitride ceramics.
Wherein, fixing piece is screw, and metal nesting is further provided in holding part, is provided with screw thread in metal nesting,
For with screw fit.
Wherein, thickness of the bone plate in holding part region is greater than the thickness in other regions.
Wherein, first surface is shiny surface, and the roughness value Ra of shiny surface is 0.01~200 micron.
Wherein, first surface has porous coarse structure, and the mean porosities of porous coarse structure are 10%~80%, put down
Equal aperture is 10~1000 microns.
Wherein, first surface has the cambered surface cooperated with human body bone photo.
Wherein, the shape of bone plate is rectangle, square, Y shape, T shape, X-shaped or abnormity.
In order to solve the above technical problems, another technical solution used in the present invention is: a kind of Orthopedic fixation device is provided,
The Orthopedic fixation device includes bone plate and fixing piece, and bone plate includes the first surface for contacting human body bone, bone plate
It further include at least one holding part, holding part is silicon nitride ceramics for accommodating fixing piece, the material of bone plate.
Wherein, fixing piece is metal fixing or ceramic fixing piece.
In order to solve the above technical problems, another technical solution used in the present invention is: providing a kind of preparation of bone plate
Method, which comprises bio-medical silicon nitride compositions are provided；Bio-medical silicon nitride compositions are carried out at molding
Reason, obtains the part to be sintered of bone plate, wherein the part to be sintered of bone plate includes at least one holding part, and holding part is for receiving
Hold fixing piece；The part to be sintered of bone plate is sintered, bone plate sintered part is obtained；The sintered part of bone plate is carried out
Post-processing, obtains silicon nitride ceramics bone plate.
The beneficial effects of the present invention are: being in contrast to the prior art, the present invention provides a kind of bone plate, the bone plate
It is silicon nitride ceramics material, relatively existing metal material, silicon nitride ceramics material is in addition to every excellent with bioceramic
Except anisotropic energy, also there is high rigidity, high bending strength, high-fatigue strength, high-fracture toughness, excellent frictional behaviour, good
Anti-infection ability and good developability；It can satisfy the intensity of fixation of bone fragments, also there is excellent biocompatibility, promote
Disconnected symphysis restores, and improves the stress shielding problem of Orthopedic fixation device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the application bone plate first embodiment；
Fig. 2 is the schematic diagram of the section structure of the application bone plate second embodiment；
Fig. 3 is the structural schematic diagram of the application Orthopedic fixation device first embodiment；
Fig. 4 is the schematic diagram of the section structure of the application bone plate third embodiment；
Fig. 5 is the structural schematic diagram of the application Orthopedic fixation device second embodiment；
Fig. 6 is the structural schematic diagram of the 4th embodiment of the application Orthopedic fixation device；
Fig. 7 is the structural schematic diagram of the application Orthopedic fixation device third embodiment；
Fig. 8 is the flow diagram of the preparation method first embodiment of the application bone plate.
Specific embodiment
It is right as follows in conjunction with drawings and embodiments to keep the purpose, technical solution and effect of the application clearer, clear
The application is further described.
The existing fixation device for fixation of bone fragments is usually metal material, although its intensity is high, technical maturity,
It is its poor biocompatibility, certain problem can be brought in the application.In order to solve this technical problem, present inventor
It finds after study, silicon nitride ceramics has high rigidity, high bending strength, high-fatigue strength, high-fracture toughness, can satisfy solid
Determine the demand of knochenbruch, while it also has good anti-infection ability and good developability, be conducive to the recovery healing of knochenbruch,
It can be considered to make Orthopedic fixation device using silicon nitride ceramics.Based on this, the application provides a kind of bone plate, orthopaedics
Fixed device and preparation method thereof.
Referring to Fig. 1, Fig. 1 is the structural schematic diagram of the application bone plate first embodiment.In this embodiment, it connects
Bone plate 10 includes the first surface 101 and at least one holding part 102 for contacting human body bone, and holding part 102 is solid for accommodating
Determine part (not shown), the material of bone plate 10 is silicon nitride ceramics.
When wherein, in one embodiment, using the plate fixation knochenbruch, after knochenbruch healing, need to bone plate
It is removed；For example, fracture patient is young man, being chronically implanted for bone plate is unfavorable for the subsequent life of patient, therefore best
It removes.At this point, being that bone plate is combined with primary bone length during preventing from fixing, secondary damage is caused to primary bone when removing
Wound；Setting first surface 101 is shiny surface, and the setting of shiny surface can not only prevent the long conjunction between bone plate and primary bone,
Abrasion when loaded between bone plate and primary bone can also be reduced.Wherein, the roughness value Ra of shiny surface is 0.01~200
Micron.
When wherein, in one embodiment, using the plate fixation knochenbruch, after knochenbruch healing, do not need to synthetism
Plate is removed；For example, fracture patient is the elderly, the second operation for removing bone plate can bring certain injury to patient,
It can be considered to Preserving time bones plate.At this time, it may be necessary to which bone plate can make it that can effectively fix with the long conjunction of primary bone
Knochenbruch, while preventing the primary bone of bone plate activity friction；First surface 101, which is arranged, has porous coarse structure, by by first
Surface 101 is arranged to porous coarse structure, is on the one hand capable of increasing the roughness of first surface 101, helps osteoblast as early as possible
On ground bone is long；On the other hand the porous coarse structure is similar with the primary trabecular bone structure of human body, can lure osteoblast bone into
It grows into, and then effectively connect bone plate with primary bone fixation, form good biological fixation.Wherein, porous coarse structure
Mean porosities be 10%~80%, average pore size is 10~1000 microns.
Wherein, in one embodiment, first surface 101 has the cambered surface cooperated with human body bone photo.By this set,
The stickiness of bone plate and primary bone can be made more preferable, increase contact area, and then enhance the stability of bone plate.
Wherein, in one embodiment, thickness of the bone plate in 102 region of holding part can be greater than the thickness in other regions
Degree.Can make the less intrusion of bone plate by this set, while holding part being made not deform or deform very little, and make its
The best resistance to bending, rotation and pressure load is obtained in the case where minimum invasion.
Wherein, in one embodiment, bone plate can be the pressurizing bone plate for long bone shaft fracture；Or it is used for bone
The reconstruction bone plate of basin, distal humerus, clavicle or outer fracture of ankle etc.；Or femur ankle supports bone plate, tibial plateau outside and distal end
Interior lateral branch holds bone plate, calcaneum and toe and (refers to) Bone plate, encephalic defect repair bone plate, Maxillary region bone plate or defect repair bone
Plate privileged sites bone plate etc..In order to adapt to shape and the position of different bones, the shape of bone plate can be rectangle, pros
Shape, Y shape, T shape, X-shaped or other abnormity, concrete shape is it is not limited here.
Wherein, in one embodiment, holding part is through-hole, and screw thread is arranged in through-hole, is also screw hole；Fixing piece is spiral shell
It follows closely, the screw thread on screw is matched with the screw thread in through-hole.Wherein, screw hole can for screw hole or sliding pressurization hole with
The overlapping hole of screw hole, shape can be round or ellipse；Also it may be designed such that screw head can be down to
It partially sinks to wherein.Bone screws include and the matching used screw of bone plate, and individually play the pulling force nail of fixed function
Or interference screw；Bone screws are divided into itself thread-cutting screw or non-self thread-cutting screw or os integumentale screw or cancellous bone screw,
Or ceramic screw or metallic screw.
Wherein, in one embodiment, with bone plate cooperate by fixing piece of the plate fixation on knochenbruch can be with
The same ceramic material of bone plate.Such as holding part is through-hole, and internal screw thread is provided in through-hole, fixing piece is silicon nitride ceramics material
The bone screw of matter is provided with external screw thread on bone screw, is fixed by threaded engagement.By selecting connecing for same material
Bone plate and bone screw can be avoided and stress shielding problem occur.But since ceramic material hardness is big, poor ductility, into
When row threaded engagement is fixed, serious forgiveness is poor, causes the conformability between screw thread poor.In order to solve this technical problem, Ke Yitong
The structure of change bone plate and bone screw is crossed to improve, can also be matched by the screw of selection metal material with ceramic bone plate
It closes to solve.
Fig. 2 and Fig. 3 are please referred to, Fig. 2 is the schematic diagram of the section structure of the application bone plate second embodiment, and Fig. 3 is this
Apply for the structural schematic diagram of Orthopedic fixation device first embodiment.In one embodiment, holding part 202 is through-hole, through-hole
It is divided into the first part 2021 close to 201 side of first surface, and the second part 2022 far from 201 side of first surface, the
A part 2021 is even surface, is provided with screw thread in second part 2022；Fixing piece 30 is bone screw, and bone screw 30 includes
Nut and screw rod, screw rod are divided into the first part 3021 close to nut, the Part III 3023 far from nut and are located in the middle
Screw thread is provided on second part 3022, first part 3021 and Part III 3023, second part 3022 is even surface.Right
When knochenbruch is fixed, the Part III 3023 of bone screw 30 is used to be implanted in primary bone across the through-hole 202 of bone plate,
To be fixed；The second part 3022 of bone screw 30 is taken in the first part 2021 of through-hole 202；Bone screw
30 first part 3021 is used to be threadedly engaged with through-hole 202 second part 2022, to further fix bone plate.Pass through this
Kind mode, the case where the length for the screw thread that connects can be reduced, reduced because being not fixed firmly caused by screw thread mistake.The embodiment
In, the material of bone screw is silicon nitride ceramics, and in other embodiments, bone screw is also possible to metal or other materials
, it is not limited here.
Fig. 4 and Fig. 5 are please referred to, Fig. 4 is the schematic diagram of the section structure of the application bone plate third embodiment, and Fig. 5 is this
Apply for the structural schematic diagram of Orthopedic fixation device second embodiment.In one embodiment, fixing piece 50 is screw, in order to inhale
Receive screw thread error, metal nesting 4021 is provided in holding part 402, is provided with screw thread in metal nesting 4021, for
Screw 402 cooperates.Using the ductility of metal, the small error between screw thread can be absorbed, realizes that screw and the effective of bone plate are consolidated
It is fixed.Wherein, screw 50 can be silicon nitride ceramics material, is also possible to other ceramic materials, can also be metal material, works as spiral shell
When nail is metal material, the material that can choose metal nesting is identical as the material of metallic screw, such as can all be titanium alloy,
Cobalt alloy etc..
Referring to Fig. 6, Fig. 6 is the structural schematic diagram of the 4th embodiment of the application Orthopedic fixation device.In an embodiment party
In formula, bone plate includes at least two holding parts 602, and at least two holding parts 602 are arranged in the two of synthetism plate axis 601 respectively
Side, holding part 602 or multiple, multiple 602 array arrangements of holding part are in the two sides of synthetism plate axis 601.Each accommodating
The central axis 6021,6022 in portion 602 and synthetism plate axis 601 are in scheduled angle, and the axis of two opposite holding parts
It is identical as the angle of synthetism plate axis, such as central axis 6021 and the angle of axis 601 are angle 1, central axis 6022 and axis
The angle of line 601 is angle 2, wherein angle 1 is equal with angle 2.It is arranged in a manner of intersecting angulation by the holding part on bone plate
On bone plate, it can realize that more plane lockings are fixed at fixation bone fracture plate, increase the holding volume of fixing piece, increase solid
The holding power of part is determined, to keep the fixation of bone plate more stable, conducive to the healing of patients with fractures.
On this basis, the application also provides a kind of Orthopedic fixation device.Referring to Fig. 7, Fig. 7 is that the application orthopaedics is fixed
The structural schematic diagram of device third embodiment.In this embodiment, Orthopedic fixation device includes bone plate 701 and fixing piece
702, bone plate 701 includes the first surface 7011 for contacting human body bone, at least one holding part 7012, the use of holding part 7012
In receiving fixing piece 702, the material of bone plate 701 is silicon nitride ceramics.Wherein, fixing piece 702 is metal fixing or ceramics
Fixing piece.The structure of bone plate 701 and fixing piece 702 please refers to the description of above embodiment, and details are not described herein.
Above scheme is that raw material makes bone plate, relatively existing metal material, silicon nitride by selecting silicon nitride ceramics
Ceramic material also has high rigidity, high bending strength, high fatigue strong other than every excellent properties with bioceramic
Degree, high-fracture toughness, excellent frictional behaviour, good anti-infection ability and good developability；It can satisfy fixation of bone fragments
Intensity, also there is excellent Bone Ingrowth performance and biocompatibility, disconnected symphysis is promoted to restore, improve Orthopedic fixation device
Stress shielding problem.
On this basis, the application also provides a kind of preparation method of bone plate.Referring to Fig. 8, Fig. 8 is the application synthetism
The flow diagram of the preparation method first embodiment of plate.In this embodiment, method includes the following steps:
S801: bio-medical silicon nitride compositions are provided.
Wherein, bio-medical silicon nitride compositions include the silicon nitride and 2%~30% weight of 70%~98% parts by weight
Part additive, additive be magnesia, yttrium oxide, aluminium oxide, ytterbium oxide, strontium oxide strontia, cerium oxide, titanium carbide, boron nitride and
At least two in titanium nitride.
S802: forming processes are carried out to bio-medical silicon nitride compositions, obtain the part to be sintered of bone plate, wherein connect
The part to be sintered of bone plate includes at least one holding part, and holding part is for accommodating fixing piece.
Specifically, to bio-medical silicon nitride compositions carry out forming processes include to bio-medical silicon nitride compositions into
Row pre-molding obtains green body part, is machined out molding to green body part and/or manual processing forms to obtain part to be sintered.Its
In, gained green body part can be with shape, such as cylindrical body, cube similar in target synthetism plate shape etc..
S803: the part to be sintered of bone plate is sintered, bone plate sintered part is obtained.
Wherein, sintered part is treated on a preset condition based according to the size of bone plate, shape etc. to be sintered, be sintered
Part.
S804: post-processing the sintered part of bone plate, obtains silicon nitride ceramics bone plate.
Wherein, corresponding post-processing etc. optionally is carried out to sintered part according to the technical requirements of final products, finally
Obtain silicon nitride ceramics bone plate.
Wherein, in one embodiment, preparing silicon nitride ceramics bone plate, specific step is as follows:
Step 1: preparing raw material powder, by silicon nitride ceramic, titanium nitride, magnesia, yttrium oxide and aluminium oxide according to predetermined
Ratio is sufficiently mixed；Wherein the amount of silicon nitride ceramic accounts for the 67% of total weight, titanium nitride, magnesia, yttrium oxide and oxygen
The amount for changing aluminium accounts for the 33% of total weight.
Step 2: the good raw material powder of mixing is carried out abundant ball milling 60 hours in the ball mill using zirconium oxide balls.
Step 3: being granulated the good raw material powder of ball milling and dried by sponging granulator, specific granulation conditions are as follows: is granulated gas
Atmosphere is air, and slurry solid content is 45%-55%, and atomizer rotating speed is 8000 turns per minute, and feeding rate is per minute 0.4
It rises, drying temperature is 80 DEG C, and drying time is 15 hours.
Step 4: cold pressing or cold isostatic compaction will be carried out in the raw material powder merging mold after granulating and drying, obtains first
Green body；Wherein, molding pressure is 30~300MPa.
Step 5: carrying out isostatic cool pressing processing for the first green body, and the dwell time is 30~60 seconds, obtains green body part.
Step 6: according to the shape need and related process parameters of bone plate, by machining, green body part is handled
Obtain semi-finished product to be sintered.
Step 7: under nitrogen protection, in the gas pressure sintering furnace or hot isostatic pressing furnace not less than 10MPa, by following work
Skill sintering: 0~300 DEG C 180 minutes, 300~600 DEG C 180 minutes, 600~900 DEG C 180 minutes, 900~1200 DEG C 180 points
Clock, 1200~1500 DEG C 180 minutes, 1500~1750 DEG C 180 minutes, 1750~1750 DEG C 180 minutes, taken out in blow-on primary
Vacuum, takes out a vacuum at 300 DEG C, and 900 DEG C of whens take out a vacuum, and blow-on obtains silicon nitride when naturally cooling to 100 DEG C or less
Ceramic synthetism board finished product blank.
Step 8: silicon nitride ceramics synthetism board finished product blank is subjected to hip treatment, actual conditions again are as follows: the time is
2 hours, temperature was 1750~2000 DEG C, and pressure is 150~250MPa.
Step 9: silicon nitride ceramics synthetism board finished product blank is carried out at polishing according to the technical requirements of finished product bone plate
Reason, surface acid-washing processing and laser marking and cleaning appropriate, then can be obtained finished product bone plate.
The foregoing is merely presently filed embodiments, are not intended to limit the scope of the patents of the application, all to utilize this
Equivalent structure or equivalent flow shift made by application specification and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (10)
1. a kind of bone plate, which is characterized in that the bone plate includes the first surface for contacting human body bone, the bone plate
It further include at least one holding part, the holding part is silicon nitride ceramics for accommodating fixing piece, the material of the bone plate.
2. bone plate according to claim 1, which is characterized in that the fixing piece is screw, and the holding part is interior into one
Step is provided with metal nesting, is provided with screw thread in the metal nesting, is used for and the screw fit.
3. bone plate according to claim 1, which is characterized in that thickness of the bone plate in the holding part region
Greater than the thickness in other regions.
4. bone plate according to claim 1, which is characterized in that the first surface is shiny surface, the shiny surface
Roughness value Ra is 0.01~200 micron.
5. bone plate according to claim 1, which is characterized in that the first surface has porous coarse structure, described
The mean porosities of porous coarse structure are 10%~80%, average pore size is 10~1000 microns.
6. bone plate according to claim 1, which is characterized in that the first surface has to be cooperated with the human body bone photo
Cambered surface.
7. bone plate according to claim 1, which is characterized in that the shape of the bone plate is rectangle, square, Y
Shape, T shape, X-shaped or abnormity.
8. a kind of Orthopedic fixation device, which is characterized in that the Orthopedic fixation device includes bone plate and fixing piece, the synthetism
Plate includes the first surface for contacting human body bone, and the bone plate further includes at least one holding part, and the holding part is used for
The fixing piece is accommodated, the material of the bone plate is silicon nitride ceramics.
9. Orthopedic fixation device according to claim 8, which is characterized in that the fixing piece is metal fixing or ceramics
Fixing piece.
10. a kind of preparation method of bone plate, which is characterized in that the described method includes:
Bio-medical silicon nitride compositions are provided；
Forming processes are carried out to the bio-medical silicon nitride compositions, obtain the part to be sintered of bone plate, wherein the synthetism
The part to be sintered of plate includes at least one holding part, and the holding part is for accommodating fixing piece；
The part to be sintered of the bone plate is sintered, bone plate sintered part is obtained；
The sintered part of the bone plate is post-processed, silicon nitride ceramics bone plate is obtained.
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Cited By (1)
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| CN109567888A (en) * | 2019-01-21 | 2019-04-05 | 北京爱康宜诚医疗器材有限公司 | Kneecap tendon hapteron |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109567888A (en) * | 2019-01-21 | 2019-04-05 | 北京爱康宜诚医疗器材有限公司 | Kneecap tendon hapteron |
| CN109567888B (en) * | 2019-01-21 | 2024-06-14 | 北京爱康宜诚医疗器材有限公司 | Patella tendon attachment device |
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