CN201879855U - Magnetic retainer used for tooth - Google Patents
Magnetic retainer used for tooth Download PDFInfo
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- CN201879855U CN201879855U CN2010206510128U CN201020651012U CN201879855U CN 201879855 U CN201879855 U CN 201879855U CN 2010206510128 U CN2010206510128 U CN 2010206510128U CN 201020651012 U CN201020651012 U CN 201020651012U CN 201879855 U CN201879855 U CN 201879855U
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- soft magnetism
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Abstract
The utility model belongs to the technical fields of oral medicine repair and medical instruments, in particular to a magnetic retainer used for a tooth, which solves the problems that potential hazards exist in the prior art, retainer assemblies have low bonding strength and are easy to drop and the like. A T-shaped cup-shaped magnet yoke is made of nickel-free anti-corrosion ferrite soft magnetic stainless steel, and a rare earth neodymium iron boron permanent magnet is arranged in the magnet yoke and is tightly stuck to the bottom at the concave point of the magnet yoke; and a high-nitrogen nickel-free austenitic nonmagnetic stainless steel circular slice is embedded into the T-shaped cup-shaped magnet yoke, is tightly stuck to the other side of the magnet and forms a plane with the opening end surface of the magnet yoke, and a circumferential seam is sealed by microcell laser welding. The T-shaped cup-shaped magnet yoke wrapping the permanent magnet and a nickel-free anti-corrosion ferrite soft magnetic stainless steel armature embedded in a tooth root constitute the magnetic retainer used for the tooth of a closed magnetic circuit. The rare earth neodymium iron boron permanent magnet is used for generating powerful magnetic attraction, and the magnetic retainer used for the tooth is used for retaining an oral false tooth, is non-toxic, harmless, cheap and reliable, and has strong practicability.
Description
Technical field:
This utility model belongs to stomatology reparation and technical field of medical instruments, is specially a kind of tooth magnetic attachment, adopts rare-earth Nd-Fe-B permanent magnet to produce strong magnetic attraction, is used for the maintenance of oral artificial tooth.
Background technology:
Along with the raising of China's living standards of the people, aged tendency of population increases day by day, and oral cavity health is more and more paid attention to by people, along with the progress of stomatology recovery technique and medical device technology, will bring happiness and health to people.At present, the tooth of extensive use enters group day at the product that advances the dental material company limited day of Chinese individual proprietorship with the denture retention body for Amada Co., Ltd., and this product is repeatedly applied for a patent, and certain market is arranged at home.Shortcoming: complex process, product percent of pass are low, and cost height, price are expensive, come off easily, stainless steel material contains that the people is had the potential hazard elemental nickel, are difficult for large-scale popularization and use.Domestic magnetic attachment or magnetic fastening body for dental product do not adopt laser weld substantially, only make the bonding agent of denture retention body with strength adhesive, mostly do not obtain practical application.Shortcoming: retainer assembly bond strength is low, and sealing is poor, and the binding agent magnetic resistance is big, and maintenance power is poor, is difficult to be approved by market.
The utility model content:
Problems such as the purpose of this utility model is to provide a kind of nontoxic, cheap reliable and practical tooth magnetic attachment, and potential hazard, cost height, the retainer assembly bond strength that exists in the solution prior art is low and easily come off.
The technical solution of the utility model is:
A kind of tooth magnetic attachment, this tooth is provided with T type cup-shaped soft magnetism ferritic stainless steel yoke with magnetic attachment, rare-earth Nd-Fe-B permanent magnet, the armature of high nitrogen and nickel-less austenitic stainless steel thin discs and soft magnetism ferritic stainless steel disk, rare-earth Nd-Fe-B permanent magnet places in the T type cup-shaped soft-magnetic stainless steel yoke, the one side of rare-earth Nd-Fe-B permanent magnet fits tightly with T type cup-shaped soft magnetism ferritic stainless steel yoke recess plane, the another side of rare-earth Nd-Fe-B permanent magnet fits tightly with the high nitrogen and nickel-less austenitic stainless steel thin discs that embeds T type cup-shaped soft magnetism ferritic stainless steel yoke, the circumferential opening end face of T type cup-shaped soft magnetism ferritic stainless steel yoke and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding constitute the plane, the armature of this plane and soft magnetism ferritic stainless steel disk fits tightly, and forms closed magnetic circuit.
Described tooth magnetic attachment, T type cup-shaped yoke is structure as a whole or divides body structure.
Described tooth magnetic attachment, T type cup-shaped yoke is when dividing body structure, the plane is formed at the peripheral end of nickelles stainless steel annulus and round cup-shaped soft magnetism ferritic stainless steel yoke, and the gap of nickelles stainless steel annulus and round cup-shaped soft magnetism ferritic stainless steel yoke is connected into T type cup-shaped yoke by the microcell Laser Welding.
Described tooth magnetic attachment, nickelles stainless steel annulus are that soft magnetism ferritic stainless steel annulus or high-nitrogen nickel-free do not have the magnetic austenitic stainless steel annulus.
Described tooth magnetic attachment, the plane that the circumferential opening end face of T type cup-shaped soft magnetism ferritic stainless steel yoke and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding constitute, this planar circumferential gap constitutes the seal group zoarium by the microcell laser welded seal.
Described tooth magnetic attachment, the composition of high nitrogen and nickel-less austenitic stainless steel is: 00Fe17Cr15Mn2Mo (0.45～0.7) N.
Advantage of the present utility model and beneficial effect are:
1, the external form of magnetic attachment adopts T type cup-shaped soft-magnetic stainless steel yoke, has strengthened the bond strength of magnetic attachment and corona, and the magnetic attachment that solves is in the past chewed easy obscission in the process.
2, the combination of magnetic circuit becomes single nickel-less austenitic stainless steel disk by the disk of original center soft-magnetic stainless steel sequin and ring-type magnetism-free stainless steel precision-fit, saves a circle welding sequence, and technology is simple, and product qualified rate improves.
3, substitute the SUS316L nickel austenite stainless steel with medical high nitrogen and nickel-less austenitic stainless steel, whole magnetic attachment material is constituted develop to nontoxic biomaterial direction.
4, medical high nitrogen and nickel-less austenitic stainless steel (BIONFSS) be Metal Inst., Chinese Academy of Sciences at medical austenitic stainless steel (as 304L, 316L etc.) clinically extensive use and wherein contain the potential hazard of nickel element, a kind of novel non-nickel austenitic stainless steel material with good comprehensive mechanical property and good corrosion resistance energy of developing, its nominal composition is: 00Fe17Cr15Mn2Mo (0.45～0.7) N (granted patent: ZL 03110896.2).The tissue of medical high nitrogen and nickel-less austenitic stainless steel, mechanical property, cold deformation performance, corrosion resisting property, corrosion fatigue resistant performance, wear-corrosion resistance, and multinomial performance and the characteristic tests such as bio-compatibility that comprise cytotoxicity, sensitization, haemolysis, platelet adhesion reaction and thrombin activation, show this material aspect mechanical property, corrosion resisting property and bio-compatibility, all be better than clinical widely used medical 316L austenitic stainless steel at present.
5, the microcell laser welding process is all adopted in the cooperation slit between two kinds of stainless steel materials of composition magnetic attachment, good airproof performance, and corrosion resistance is strong, the good and intensity height of adhesion.
6, Bi He magnetic Circuit Design, leakage field is few, and suction is big.
In a word, this utility model magnetic attachment is nontoxic, and leakage field is little, and maintenance power is strong; Corrosion resistance is good, the intensity height, and wearability is good; Technology is simple, good airproof performance, product percent of pass height; The retainer external form is a T type structure, and difficult drop-off is practical; Compare with external product, this utility model has breakthrough on material and technology, is nontoxic, cheap reliable, practical tooth Denture attachment.
Description of drawings:
Fig. 1 is tooth one of magnetic attachment structural representation.
Fig. 2 is tooth two of magnetic attachment structural representation.
Among the figure, 1, T type cup-shaped soft magnetism ferritic stainless steel yoke; 2, rare-earth Nd-Fe-B permanent magnet; 3, high nitrogen and nickel-less austenitic stainless steel thin discs; 4, microcell laser welded seal; 5, the armature of soft magnetism ferritic stainless steel disk; 6, nickelles stainless steel annulus; 7, round cup-shaped soft magnetism ferritic stainless steel yoke.
The specific embodiment:
Embodiment 1:
As shown in Figure 1, in the present embodiment, tooth is made up of the armature 5 of T type cup-shaped soft magnetism ferritic stainless steel yoke 1, rare-earth Nd-Fe-B permanent magnet 2, high nitrogen and nickel-less austenitic stainless steel thin discs 3 and soft magnetism ferritic stainless steel disk with magnetic attachment.The high-coercive force of certain size, the rare-earth Nd-Fe-B permanent magnet 2 of high energy product is put into T type cup-shaped soft-magnetic stainless steel yoke 1, the one side of rare-earth Nd-Fe-B permanent magnet 2 fits tightly with T type cup-shaped soft magnetism ferritic stainless steel yoke 1 recess plane, the another side of rare-earth Nd-Fe-B permanent magnet 2 fits tightly with the high nitrogen and nickel-less austenitic stainless steel thin discs 3 that embeds T type cup-shaped soft magnetism ferritic stainless steel yoke 1, the circumferential opening end face of T type cup-shaped soft magnetism ferritic stainless steel yoke 1 and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding 3 constitute a plane, planar circumferential gap is with microcell laser welded seal 4, constitute one anti-corrosion, the wear-resisting seal group zoarium that is wrapped in magnet.Then, this face of weld polishes and polishes, and fits tightly with the armature 5 of soft magnetism ferritic stainless steel disk, constitutes a closed magnetic circuit, forms no nickel (no potential danger), cheap reliable, practical tooth Denture attachment.
The composition of described high nitrogen and nickel-less austenitic stainless steel is: 00Fe17Cr15Mn2Mo (0.45～0.7) N.
Embodiment 2:
As shown in Figure 2, in the present embodiment, tooth is made up of the armature 5 and the nickelles stainless steel annulus 6 (soft magnetism ferritic stainless steel or high-nitrogen nickel-free do not have magnetic austenitic stainless steel) of round cup-shaped soft magnetism ferritic stainless steel yoke 7, rare-earth Nd-Fe-B permanent magnet 2, high nitrogen and nickel-less austenitic stainless steel thin discs 3, soft magnetism ferritic stainless steel disk with magnetic attachment.With embodiment 1 same process, the high-coercive force of certain size, the rare-earth Nd-Fe-B permanent magnet 2 of high energy product is put into round cup-shaped soft magnetism ferritic stainless steel yoke 7, the one side of rare-earth Nd-Fe-B permanent magnet 2 fits tightly with round cup-shaped soft magnetism ferritic stainless steel yoke 7 recess planes, the another side of rare-earth Nd-Fe-B permanent magnet 2 fits tightly with the high nitrogen and nickel-less austenitic stainless steel thin discs 3 that embeds round cup-shaped soft magnetism ferritic stainless steel yoke 7, the circumferential opening end face of round cup-shaped soft magnetism ferritic stainless steel yoke 7 and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding 3 constitute a plane, planar circumferential gap is with microcell laser welded seal 4, constitute one anti-corrosion, the wear-resisting seal group zoarium that is wrapped in magnet.Then, this face of weld polishes and polishes, and fits tightly with the armature 5 of soft magnetism ferritic stainless steel disk, constitutes a closed magnetic circuit.At last, nickelles stainless steel annulus 6 is formed a plane with the 7 peripheral ends of round cup-shaped soft magnetism ferritic stainless steel yoke, two kinds of material gaps are connected into T type cup-shaped yoke with the microcell Laser Welding, with the no nickel of composition (no potential danger) such as armature 5 of soft magnetism ferritic stainless steel disk, cheap reliable, practical tooth Denture attachment.Directly make T type tooth magnetic fastening body for dental than embodiment 1, convenient and easier on the technology.
The composition of described high nitrogen and nickel-less austenitic stainless steel is: 00Fe17Cr15Mn2Mo (0.45～0.7) N.
Claims (5)
1. tooth magnetic attachment, it is characterized in that: this tooth is provided with T type cup-shaped soft magnetism ferritic stainless steel yoke with magnetic attachment, rare-earth Nd-Fe-B permanent magnet, the armature of high nitrogen and nickel-less austenitic stainless steel thin discs and soft magnetism ferritic stainless steel disk, rare-earth Nd-Fe-B permanent magnet places in the T type cup-shaped soft-magnetic stainless steel yoke, the one side of rare-earth Nd-Fe-B permanent magnet fits tightly with T type cup-shaped soft magnetism ferritic stainless steel yoke recess plane, the another side of rare-earth Nd-Fe-B permanent magnet fits tightly with the high nitrogen and nickel-less austenitic stainless steel thin discs that embeds T type cup-shaped soft magnetism ferritic stainless steel yoke, the circumferential opening end face of T type cup-shaped soft magnetism ferritic stainless steel yoke and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding constitute the plane, the armature of this plane and soft magnetism ferritic stainless steel disk fits tightly, and forms closed magnetic circuit.
2. according to the described tooth magnetic attachment of claim 1, it is characterized in that: T type cup-shaped yoke is structure as a whole or divides body structure.
3. according to the described tooth magnetic attachment of claim 2, it is characterized in that: T type cup-shaped yoke is when dividing body structure, the plane is formed at the peripheral end of nickelles stainless steel annulus and round cup-shaped soft magnetism ferritic stainless steel yoke, and the gap of nickelles stainless steel annulus and round cup-shaped soft magnetism ferritic stainless steel yoke is connected into T type cup-shaped yoke by the microcell Laser Welding.
4. according to the described tooth magnetic attachment of claim 3, it is characterized in that: the nickelles stainless steel annulus is that soft magnetism ferritic stainless steel annulus or high-nitrogen nickel-free do not have the magnetic austenitic stainless steel annulus.
5. according to the described tooth magnetic attachment of claim 1, it is characterized in that: the plane that the circumferential opening end face of T type cup-shaped soft magnetism ferritic stainless steel yoke and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding constitute, this planar circumferential gap constitutes the seal group zoarium by the microcell laser welded seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206510128U CN201879855U (en) | 2010-12-09 | 2010-12-09 | Magnetic retainer used for tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206510128U CN201879855U (en) | 2010-12-09 | 2010-12-09 | Magnetic retainer used for tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201879855U true CN201879855U (en) | 2011-06-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206510128U Expired - Fee Related CN201879855U (en) | 2010-12-09 | 2010-12-09 | Magnetic retainer used for tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201879855U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102551904A (en) * | 2010-12-09 | 2012-07-11 | 中国科学院金属研究所 | Dental magnetic retainer |
| CN104519827A (en) * | 2012-08-09 | 2015-04-15 | 株式会社Gc | Magnetic attachment for dental prostheses |
| CN106132349A (en) * | 2014-04-04 | 2016-11-16 | 日立金属株式会社 | Dental magnetic attachment magnetic structure |
-
2010
- 2010-12-09 CN CN2010206510128U patent/CN201879855U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102551904A (en) * | 2010-12-09 | 2012-07-11 | 中国科学院金属研究所 | Dental magnetic retainer |
| CN104519827A (en) * | 2012-08-09 | 2015-04-15 | 株式会社Gc | Magnetic attachment for dental prostheses |
| CN106132349A (en) * | 2014-04-04 | 2016-11-16 | 日立金属株式会社 | Dental magnetic attachment magnetic structure |
| EP3127506A4 (en) * | 2014-04-04 | 2017-12-27 | Hitachi Metals, Ltd. | Magnet structure for dental magnetic attachment |
| US10182889B2 (en) | 2014-04-04 | 2019-01-22 | Hitachi Metals, Ltd. | Magnet assembly for dental magnetic attachment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20171209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |