CN109091218A - A kind of medical titanium alloy fixing screws with internal screw thread head - Google Patents
A kind of medical titanium alloy fixing screws with internal screw thread head Download PDFInfo
- Publication number
- CN109091218A CN109091218A CN201811030293.2A CN201811030293A CN109091218A CN 109091218 A CN109091218 A CN 109091218A CN 201811030293 A CN201811030293 A CN 201811030293A CN 109091218 A CN109091218 A CN 109091218A
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- ailhead
- titanium alloy
- screw thread
- fixing screws
- internal screw
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 54
- 241001079814 Symphyotrichum pilosum Species 0.000 claims abstract description 26
- 235000004224 Typha angustifolia Nutrition 0.000 claims abstract description 26
- 230000007704 transition Effects 0.000 claims abstract description 3
- 230000006378 damage Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 11
- 239000010936 titanium Substances 0.000 description 11
- 229910052719 titanium Inorganic materials 0.000 description 11
- 239000007943 implant Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000035876 healing Effects 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000002715 modification method Methods 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 229910001040 Beta-titanium Inorganic materials 0.000 description 1
- 241000587161 Gomphocarpus Species 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000021164 cell adhesion Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/862—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the periphery of the screw head
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/8615—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the central region of the screw head
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/866—Material or manufacture
-
- 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
- A61B2017/00836—Material properties corrosion-resistant
Abstract
The present invention relates to medical titanium alloy processing and manufacturing technologies, more particularly to a kind of medical titanium alloy fixing screws with internal screw thread head, including nail rod (1) and positioned at the ailhead (2) of nail rod (1) one end, the free end of the ailhead (2) has a longitudinal aperture (21) along the nail rod (1) extending direction, the inner wall of the longitudinal direction aperture (21) has internal screw thread (23), it is characterized by: the ailhead (2) is hexagonal ailhead, the longitudinal direction aperture (21) is circular hole, the nail rod (1) and the ailhead (2) junction have transition (12), the radius of the changeover portion (12) is between the nail rod (1) radius and the ailhead (2) radius.The present invention solves the poor technical problem of stress barrier and biocompatibility of the existing technology, moreover it is possible to improve damage tolerance, and anti-crack sprouting ability is stronger compared with traditional design, and installation speed is faster, reduce the pain of patient.
Description
Technical field
The present invention relates to medical titanium alloy processing and manufacturing technologies more particularly to a kind of with the medical of internal screw thread head
Titanium alloy fixing screws.
Background technique
Medical titanium alloy is used to manufacture the intracorporal medical device of implantation people, prosthese or artificial organs and assists in the treatment of equipment
Titanium alloy.Mainly there are the alloys such as 6 aluminium of titanium, 4 vanadium, 5 aluminium of titanium, 2.5 tin.They have that specific strength is high, mechanical property is close to people's bone, intensity
It is much better than pure titanium, also has the characteristics that endurance, corrosion-resistant and biocompatibility are excellent.Wherein this feature of good biocompatibility
Make it that there is with other metal phase ratios unique advantage, therefore obtain favor extensively in medical domain, but due to its wearability and
Processing performance is not high, is dedicated to also constantly carrying out its further improvement.
Current titanium alloy had been developed that the beta-titanium alloy of low elastic modulus, marmem, porous titanium alloy,
And the titanium alloy modified by surface.Obtained extensively in terms of dentistry, limbs correction, implantation are repaired with medicine such as substitutions
And deep application.However, the problem of being limited to the characteristic and processing technology of titanium alloy itself, current titanium alloy implant master
The big technical problem of to be faced two is " stress shielding " and " bone tissue dissolution ".
Implant caused by " stress shielding " effect loosens and fracture makes the application of titanium and its alloy by certain limit
System, therefore, in order to solve this problem, the appearance of porous titanium alloy makes the performance of implant be improved.By to porosity
Size be adjusted, the elasticity modulus of alloy, intensity, density and the tissue biocompatibility being replaced can be enable to increase
By force, to preferably be matched；In addition, porous structure and coarse surface can make cell adhesion, be conducive to carry out
Proliferation and differentiation；Hole can become the channel for transporting intracorporal nutriment and body fluid, be conducive to histocyte and carry out again
Increase, accelerates healing process.Therefore, it is medically received significant attention the advantages of porous titanium alloy.
Though titanium alloy has good biocompatibility, it belongs to bio-inert material.Wearability is lower, in wear strips
It is easy to produce abrasive dust largely containing titanium under part, or even inflammatory reaction can be induced, the bone tissue around implant is caused to dissolve,
Greatly reduce its service life.Carrying out surface modification to titanium alloy can be on the basis for retaining the original excellent performance of titanium alloy
On, enhance its biocompatibility, wearability, corrosion resistance etc., improves its clinical use performance to preferably play it
Use value.There are many kinds of titanium alloy surface method of modifying, including oxidation modification method, vapour deposition process, ion implantation, etc. from
Sub- spray coating method and laser surface modification method etc..
Summary of the invention
At least one purpose of the invention is to propose a kind of medical titanium alloy fixing screws with internal screw thread head, is solved
Stress barrier and biocompatibility of the existing technology poor technical problem, moreover it is possible to improve damage tolerance, and with
Traditional design is stronger compared to anti-crack sprouting ability, and installation speed is faster, reduces the pain of patient.It is provided by the invention all
Many technical effects elaboration as detailed below that optimal technical scheme in more technical solutions can be generated.
To achieve the above object, the present invention provides following technical schemes:
A kind of medical titanium alloy fixing screws with internal screw thread head provided by the invention, including nail rod (1) and be located at
The free end of the ailhead (2) of nail rod (1) one end, the ailhead (2) has a longitudinal direction along the nail rod (1) extending direction
The inner wall of aperture (21), the longitudinal direction aperture (21) has internal screw thread (23), it is characterised in that: the ailhead (2) is hexagonal nail
Head, the longitudinal direction aperture (21) are circular hole, and the nail rod (1) and the ailhead (2) junction have changeover portion (12), described
The radius of changeover portion (12) is between the nail rod (1) radius and the ailhead (2) radius.
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: the ailhead (2) is made of more than one tooth shape ailhead (23), more than one tooth shape ailhead (23) tool
There is identical inside and outside diameter, and is evenly distributed on the end face circumference of the ailhead (2).
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: the number of the tooth shape ailhead (23) is 2-6.
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: leading on the tooth shape ailhead (23) with the circumference that more than one extends on tooth shape ailhead (23) excircle
Hole (24), the perimeter throughbores (24) respectively have outlet in two sides of each tooth shape ailhead (23).
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: the perimeter throughbores (24) distributing position having the same and quantity on each tooth shape ailhead (23).
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: the radius of the changeover portion (12) is less than the radius of the nail rod (1).
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: having screw thread (13) on the nail rod (1), the screw pitch of the screw thread (13) is confirmed using following formula:
P in formulamaleRefer to the screw pitch of the medical titanium alloy fixing screws for adult male, PfemaleRefer to and is used for adult female
Medical titanium alloy fixing screws screw pitch, P0Refer to standard pitch corresponding to nominal diameter.
Based on the above-mentioned technical proposal, the embodiment of the present invention at least can produce following technical effect:
Firstly, using titanium alloy as medical fixing screw, good biocompatibility and note high using its light intensity
The advantages of recalling effect, fatigue resistance and good corrosion resistance realizes the fixed occasion of the various supports such as gear division, orthopaedics, meets medicine
While Treatment need, the necessity of replacement is reduced, mitigates treatment cost and sufferer pain.
Secondly, realizing the Fast Installation of screw, and reduce the structure to human body primary structure by biggish thread pitch
It destroys, keeps Medical screw and human body integraty stronger, enhance the ability of damage tolerance and anti-crack germinating.
Third substitutes blind hole form by way of tooth shape ailhead, under the premise of guaranteeing screw allomeric function, reduces structure
Weight, enhance the ability of the anti-crack germinating of screw, moreover it is possible to which help is performed the operation clamping process more rapid and convenient.
4th, it, not only can be after mounting by penetrating gold by the way that a certain number of perimeter throughbores are arranged in tooth shape ailhead
Category silk help is fixed, loosens, screw thread takes off mouth, moreover it is possible to wherein fill the organic polymers objects such as certain macro-molecular protein or enzyme
Matter makes it have more bioactivity.Such material can also promote the healing of wound at implantation material, accelerate implant and surrounding group
The combination knitted, while can also be improved the safety and service life of implant.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of solid of the medical titanium alloy fixing screws with internal screw thread head provided by the embodiment of the present invention
Structural schematic diagram；
Appended drawing reference: 1, nail rod, 12, changeover portion, 13, screw thread, 2, ailhead, 21, longitudinal aperture, 22, internal screw thread, 23, tooth
Shape ailhead, 24, perimeter throughbores；
Specific embodiment
It is referred to attached drawing 1 below and word content understands between the contents of the present invention and the present invention and the prior art
Distinctive points.
Hereafter attached drawing and by way of enumerating some alternative embodiments of the invention, to technical solution of the present invention packet
Optimal technical scheme is included to be described in further detail.
It should be understood that any technical characteristic, any technical solution in the present embodiment are the technologies of plurality of optional
One or more of feature or optional technical solution, in order to describe it is succinct need it is impossible to exhaust of the invention in this document
All alternative technical characteristics and alternative technical solution, the embodiment for being also not easy to each technical characteristic are emphasized
It is one of for optional numerous embodiments, so those skilled in the art will appreciate that can will be provided by the invention any
Technological means is replaced or any two or more technical means or technical features provided by the invention is carried out mutually group
It closes and obtains new technical solution.
Any technical characteristic and any technical solution in the present embodiment do not limit the scope of the invention, this hair
Bright protection scope should include that those skilled in the art do not make the creative labor the thinkable any alternate embodiments of institute
And any two or more technical means or technical features provided by the invention are carried out mutually group by those skilled in the art
New technical solution obtained from conjunction.
At least one purpose of the invention is to propose a kind of medical titanium alloy fixing screws with internal screw thread head, is solved
Stress barrier and biocompatibility of the existing technology poor technical problem, moreover it is possible to improve damage tolerance, and with
Traditional design is stronger compared to anti-crack sprouting ability, and installation speed is faster, reduces the pain of patient.It is provided by the invention all
Many technical effects elaboration as detailed below that optimal technical scheme in more technical solutions can be generated.
To achieve the above object, the present invention provides following technical schemes:
A kind of medical titanium alloy fixing screws with internal screw thread head provided by the invention, including nail rod 1 and be located at nail
The free end of the ailhead 2 of 1 one end of bar, the ailhead 2 has a longitudinal aperture 21 along 1 extending direction of nail rod, institute
The inner wall for stating longitudinal aperture 21 has internal screw thread 23, it is characterised in that: the ailhead 2 is hexagonal ailhead, the longitudinal direction aperture 21
For circular hole, the nail rod 1 has transition 12 with 2 junction of ailhead, and the radius of the changeover portion 12 is between the nail rod
Between 2 radius of 1 radius and the ailhead.
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: the ailhead 2 is made of more than one tooth shape ailhead 23, the more than one tooth shape ailhead 23 has identical
Inside and outside diameter, and be evenly distributed on the end face circumference of the ailhead 2.
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: the number of the tooth shape ailhead 23 is 2-6.When the number of tooth shape ailhead 23 is more than 6, in order to guarantee structure
Intensity, no longer convenient for opening perimeter throughbores, therefore no more than 6.
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: the perimeter throughbores extended on 23 excircle of tooth shape ailhead on the tooth shape ailhead 23 with more than one
24, the perimeter throughbores 24 respectively have outlet in two sides of each tooth shape ailhead 23.
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: the perimeter throughbores 24 distributing position having the same and quantity on each tooth shape ailhead 23.
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: the radius of the changeover portion 12 is less than the radius of the nail rod 1.It is dimensioned such that relationship is different from passing
The screw of system can adhere to some biologically active materials in the region of the undergauge, to accelerate healing and the spiral shell of wound
The integrated process of nail and human body.
Further, as an improvement of the present invention, a kind of medical titanium alloy fixing screws with internal screw thread head,
It is characterized by: having screw thread 13 in the nail rod 1, the screw pitch of the screw thread 13 is confirmed using following formula:
P in formulamaleRefer to the screw pitch of the medical titanium alloy fixing screws for adult male, PfemaleRefer to and is used for adult female
Medical titanium alloy fixing screws screw pitch, P0Refer to standard pitch corresponding to nominal diameter.
Based on the above-mentioned technical proposal, the embodiment of the present invention at least can produce following technical effect:
Firstly, using titanium alloy as medical fixing screw, good biocompatibility and note high using its light intensity
The advantages of recalling effect, fatigue resistance and good corrosion resistance realizes the fixed occasion of the various supports such as gear division, orthopaedics, meets medicine
While Treatment need, the necessity of replacement is reduced, mitigates treatment cost and sufferer pain.
Secondly, realizing the Fast Installation of screw, and reduce the structure to human body primary structure by biggish thread pitch
It destroys, keeps Medical screw and human body integraty stronger, enhance the ability of damage tolerance and anti-crack germinating.
Third substitutes blind hole form by way of tooth shape ailhead, under the premise of guaranteeing screw allomeric function, reduces structure
Weight, enhance the ability of the anti-crack germinating of screw, moreover it is possible to which help is performed the operation clamping process more rapid and convenient.
4th, it, not only can be after mounting by penetrating gold by the way that a certain number of perimeter throughbores are arranged in tooth shape ailhead
Category silk help is fixed, loosens, screw thread takes off mouth, moreover it is possible to wherein fill the organic polymers objects such as certain macro-molecular protein or enzyme
Matter makes it have more bioactivity.Such material can also promote the healing of wound at implantation material, accelerate implant and surrounding group
The combination knitted, while can also be improved the safety and service life of implant.
Wherein, titanium alloy component of the present invention and content are as follows:
Particularly, the TC4 titanium alloy of production and application and 4712 high strength titanium alloy magnetism are low, and anti-bending strength is good, has succeeded
Ground is for clinic.Titanium " 614 " alloy is on the basis of titanium containing aluminium 5.5%~6.5%, vanadium 3.5%~4.5%, iron
0.25%, carbon 0.08%." ELI " for implants contains very low carbon, oxygen, ammonia and hydrogen, these usual impurity summations are too late
0.1%, mechanical performance is better than the above a variety of materials, and the touching damage product of titanium seldom causes adverse reaction.Though and pure titanium has
There is very high anti-touching damage property, but its yield stress and ultimate tensile stress are low, so pure titanium is not suitable as internal fixation material.Through locating
Intensity and toughness can be combined together well by the pure titanium (ISO TC150 5832/2) of reason, and histocompatbility is good, and there is no harm in
CT and MRI is hindered to check.
Any technical solution disclosed in aforementioned present invention unless otherwise stated, if it discloses numberical range,
Disclosed numberical range is preferred numberical range, and any it should be appreciated by those skilled in the art preferred numberical ranges
The only obvious or representative numerical value of technical effect in many enforceable numerical value.It, can not since numerical value is more
Exhaustion, so the present invention just discloses technical solution of the component values to illustrate the present invention, also, the above-mentioned numerical value enumerated is not
The limitation to the invention protection scope should be constituted.
If the words such as " first ", " second " are used herein come if limiting components, those skilled in the art are answered
This knows: the use of " first ", " second " is intended merely to facilitate in description and is distinguished components as not having Stated otherwise
Outside, above-mentioned word has no special meaning.
Meanwhile if aforementioned present invention discloses or relates to the components or structural member of connection fastened to each other, except another
There is statement outer, is fixedly connected it is to be understood that connection (such as using bolt or screw connection) can be removedly fixed, it can also be with
Understand are as follows: non-removable to be fixedly connected with (such as riveting, welding), certainly, connection fastened to each other or integral structure
(such as manufacturing using casting technique is integrally formed) is replaced (obviously can not be using except integrally formed technique).
In addition, for indicating the art of positional relationship or shape applied in any technical solution disclosed in aforementioned present invention
Its meaning includes approximate with its, similar or close state or shape to language unless otherwise stated.Either component provided by the invention
Either being assembled by multiple individual component parts, or the separate part that integrally formed technique manufactures.
In the description of the present invention if used term " center ", " longitudinal direction ", " transverse direction ", "front", "rear", " left side ",
" right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" etc., then the orientation or positional relationship of above-mentioned term instruction is base
In orientation or positional relationship shown in the drawings, it is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion
Signified equipment, mechanism, component or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limiting the scope of the invention.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (7)
1. a kind of medical titanium alloy fixing screws with internal screw thread head, including nail rod (1) and positioned at the nail of nail rod (1) one end
Head (2), the free end of the ailhead (2) has a longitudinal aperture (21) along the nail rod (1) extending direction, described vertical
There are internal screw thread (23) to the inner wall of aperture (21), it is characterised in that: the ailhead (2) is hexagonal ailhead, the longitudinal direction aperture
It (21) is circular hole, the nail rod (1) and the ailhead (2) junction have transition (12), the radius of the changeover portion (12)
Between the nail rod (1) radius and the ailhead (2) radius.
2. a kind of medical titanium alloy fixing screws with internal screw thread head according to claim 1, it is characterised in that: institute
It states ailhead (2) to be made of more than one tooth shape ailhead (23), the more than one tooth shape ailhead (23) is having the same inside and outside
Diameter, and be evenly distributed on the end face circumference of the ailhead (2).
3. a kind of medical titanium alloy fixing screws with internal screw thread head according to claim 2, it is characterised in that: institute
The number for stating tooth shape ailhead (23) is 2-6.
4. a kind of medical titanium alloy fixing screws with internal screw thread head according to claim 2, it is characterised in that: institute
State the perimeter throughbores (24) extended on tooth shape ailhead (23) excircle on tooth shape ailhead (23) with more than one, the circle
Zhou Tongkong (24) respectively has outlet in two sides of each tooth shape ailhead (23).
5. a kind of medical titanium alloy fixing screws with internal screw thread head according to claim 4, it is characterised in that: institute
State perimeter throughbores (24) distributing position having the same and quantity on each tooth shape ailhead (23).
6. a kind of medical titanium alloy fixing screws with internal screw thread head according to claim 1, it is characterised in that: institute
The radius for stating changeover portion (12) is less than the radius of the nail rod (1).
7. a kind of medical titanium alloy fixing screws with internal screw thread head according to claim 1, it is characterised in that: institute
Stating on nail rod (1) has screw thread (13), and the screw pitch of the screw thread (13) is confirmed using following formula:
P in formulamaleRefer to the screw pitch of the medical titanium alloy fixing screws for adult male, PfemaleRefer to for the medical of adult female
The screw pitch of titanium alloy fixing screws, P0Refer to standard pitch corresponding to nominal diameter.
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| CN201811030293.2A CN109091218A (en) | 2018-09-05 | 2018-09-05 | A kind of medical titanium alloy fixing screws with internal screw thread head |
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| CN201811030293.2A CN109091218A (en) | 2018-09-05 | 2018-09-05 | A kind of medical titanium alloy fixing screws with internal screw thread head |
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| CN109091218A true CN109091218A (en) | 2018-12-28 |
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