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WO2002014577A1 - Procede pour produire un element metallique cylindrique a paroi mince - Google Patents

Procede pour produire un element metallique cylindrique a paroi mince Download PDF

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Publication number
WO2002014577A1
WO2002014577A1 PCT/JP2001/005817 JP0105817W WO0214577A1 WO 2002014577 A1 WO2002014577 A1 WO 2002014577A1 JP 0105817 W JP0105817 W JP 0105817W WO 0214577 A1 WO0214577 A1 WO 0214577A1
Authority
WO
WIPO (PCT)
Prior art keywords
core material
film
thin
stent
resist film
Prior art date
Application number
PCT/JP2001/005817
Other languages
English (en)
Japanese (ja)
Inventor
Shuichi Miyazaki
Takashi Kawabata
Kaneto Shiraki
Original Assignee
Japan Lifeline Co., Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Lifeline Co., Ltd filed Critical Japan Lifeline Co., Ltd
Publication of WO2002014577A1 publication Critical patent/WO2002014577A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/0005—Separation of the coating from the substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes

Definitions

  • the present invention relates to a method of forming a cylindrical member which can be reduced in thickness to, for example, several tens of microns or less, and has no mechanical connection portion and excellent mechanical strength.
  • a resin tube is used for a device such as a catheter.
  • the tube that constitutes the catheter is made of a gold tube, it is difficult for a normal gold tube to insert into a tortuous site such as a blood vessel because it lacks flexibility 1 mm. It is.
  • a tube constituting a catheter or the like is made of a superelastic alloy such as a nickel-titanium alloy.
  • the present invention has been made in view of such difficulties.
  • a gold metal pipe that can be reduced in thickness to several tens of microns to 13 ⁇ 4K and has no seam welds and excellent mechanical strength.
  • the thin-walled cylindrical member according to the present invention comprises a step of depositing a gold Jffii film on at least the outer peripheral surface of the core material by a vapor phase growth method, Removing and leaving the lifted J ⁇ film.
  • Knitting metal thin film with pattern power [! After performing laser cutting (for example, laser cutting), the knitting core material may be removed. Alternatively, after forming a resist pattern of a predetermined pattern on at least the outer peripheral surface of the knitting core material, and excluding the resist film with the HJt constant pattern, at least on the outer peripheral surface of the knitting core material by the phase growth method. A gold film may be deposited, and then the core material and the resist film may be removed.
  • the male member of the thin-walled cylindrical member according to the present invention is:
  • the shape of the tubular member is not particularly limited, and may be a cylindrical tube, a rectangular tube, a polygonal tube, a bottomed tube, or the like.
  • These tubular members are: Turn-processed material may be used.
  • the solid phase growth method is preferably a sputtering method, and more preferably a magnetron sputtering method.
  • a thin metal tubular member having a memory characteristic or a characteristic characteristic such as nickel-titanium alloy can be easily manufactured.
  • the braided metal thin film has special memory or superelastic properties.
  • the metal thin-walled cylindrical member made of a gold film having these characteristics can be easily inserted even into a bent part, and the force is low. Because of its excellent sashability, it can be particularly suitably used as an optional device.
  • Ni nickel-titanium, iron-manganese-silicon, Examples thereof include a copper-aluminum-nickel system and an amorphous metal system.
  • “Na” means that the range of recoverable bullets is large, for example, as large as 1% to 10%. It also includes the large elasticity of the fastener.
  • Nana metal is
  • the elastic modulus in the region is extremely small compared to the elastic modulus of iron and stainless steel, and is excellent in flexibility. Simple translation of ⁇
  • FIGS. 1A and 1B are schematic cross-sectional views showing a process of a thin-walled tube according to one embodiment of the present invention.
  • FIG. 2 is a schematic view of a sputtering apparatus used for manufacturing a thin-walled tube.
  • FIG. 3 is a schematic cross-sectional view of a main part of a sputtering apparatus according to another example.
  • FIG. 4 is a schematic diagram of a sputtering apparatus according to still another example.
  • FIG. 5 is a schematic view of a stent obtained by the i method according to another embodiment of the present invention
  • FIG. 6 is a schematic view of a main part showing a joint between the first stent element and the second stent element shown in FIG. 5,
  • FIGS. 8A and 8B are cross-sectional views of main parts showing a use state of the stent.
  • the best bear for carrying out the invention As shown in Fig. 1 and Fig. 1, the following describes the case of manufacturing a metal-M thin-walled tube as a metal thin-walled tubular member in the braided state. .
  • a core material 100 is prepared.
  • the core material 100 has an elongated ⁇ e in the ⁇ direction, may be hollow or solid, and its cross-sectional shape is not particularly limited, and may be a circle, an ellipse, a square, a polygon, or another shape.
  • the core material 100 is constituted by a solid rod having a circular cross section.
  • the material of the core material 100 is not particularly limited as long as it is a material that can be obtained from the metal film 40. It is not limited to water-soluble materials, low-temperature materials, or decomposable materials, and Nobuha diameter materials.
  • f-capacitive material examples include, but are not particularly limited to, for example, sezolellose derivatives such as carboxymethyl cellulose, polyvinylpyrrolidone, polyvinyl alcohol, polymethacrylic acid, sodium polyethylene sulfonic acid, polyethylene oxide, and polyvinyl acetate. Is done.
  • the low-temperature decomposable material is not particularly limited.
  • polylactic acid polycarbonate, starch / polyvinyl alcohol, poly-3-hydroxybutylate (polyester), polyglycol, etc.
  • examples thereof include acid and polyprolactone.
  • the material of the cap diameter is not particularly limited, and examples thereof include resins such as polyethylene, polypropylene, and nylon, and PTFE coatings on copper surfaces.
  • the thickness and length of the core material 100 are determined according to the application of the tube to be obtained, etc., but in the present real fiber, the outer diameter of the core material 100 is 2mra ⁇ below. ⁇ > Good in diameter.
  • a gold coating film 40 is formed on the outer peripheral surface of the core material 100.
  • the metal thin film 40 is formed on the outer peripheral surface of the core material 100 using the magnetron sputtering apparatus 70 shown in FIG.
  • the core material 100 is rotated by the rotation holding device 82 so that the core material 100 is rotatably arranged around its axis. One end of 00 is held.
  • the gold ⁇ film 40 is formed on the evening peripheral surface of the core material 100. It is formed.
  • an alloy target may be used as the target 7 4.
  • a plurality of metal targets may be placed in a plurality of IKs.
  • a nickel-titanium alloy target or a combination of a nickel target and a titanium target is set on the mounting base 76.
  • the thickness of the gold film 40 formed on the outer peripheral surface of the core material 100 using the magnetron sputtering apparatus 70 shown in FIG. 2 is not particularly limited, but may be as thin as 5 m or less Tgffi.
  • the gold J3 ⁇ 4 film 40 is formed of a nickel-titanium alloy.
  • the core material 100 disposed inside the metal thin film 40 is removed.
  • the core material 100 is formed as a rolled material, as shown in the figure, only the core material 100 is stretched in the axial direction and the evening is protected.
  • the core material 100 is formed from the inside of the metal film 40.
  • the core material 100 on which the metal thin film 40 is formed is immersed in water or the like. Is dissolved in water, leaving only the tubular metal thin film 40.
  • the core material 100 is made of a biodegradable material, only the core material 100 may be replaced with nocteria, amylase or reno. —Only the tubular metal thin film 40 is left by performing biodegradation treatment using a secret such as zemo.
  • the method of thin-walled gold tubes related to the method it is possible to manufacture thin-walled thin tubes of 1 oum r, and the tubes are seamless, have uniform physical characteristics, and have excellent mechanical strength. I have.
  • a thin tube made of the metal thin film 40 having the property can be easily formed.
  • Such a thin tube can be easily inserted into a bent portion and has excellent pushability, so that it can be particularly suitably used, for example, as a device for a catheter tube or the like.
  • the thin-walled tube can also be used for other purposes, such as a varicose vein TO needle, a shaft for a nosket force 1 / ⁇ forceps, a stent, a lacrimal tube, etc. .
  • ⁇ of the thin-walled thigh tube according to the embodiment is ff according to the first embodiment.
  • This is a modification of the il method of the Kinto thin-walled tube, and the spattering device used for the production male is configured as shown in FIG. 3. Will be explained.
  • a pair of rotation-permissible sealing devices 84 are provided on the opposite side walls of the Mariyanagi room 72 of the sputtering device, Through 4, the core material 100 is held inside the process 72.
  • the core material 100 is rotatably held by a sealing device 84 inside the wing room 72, and is moved in the axial direction from right to left in the drawing. It's ok.
  • the shearing device 84 is configured to be able to seal the inside of the polisher 72 irrespective of the rotational movement and the directional movement of the core material 100 around the axis.
  • the core material 100 is moved in the axial direction while rotating inside the bell 72, and the magnetron is the same as that of ⁇ of the former tern 1 real expansion.
  • the gold coating film 40 shown in FIG. 1A can be formed on the outer peripheral surface of the core material 100 along the direction of the fat.
  • the method for manufacturing a thin metal tube according to the embodiment is a modification of the let method for a thin metal tube according to the m1 embodiment, and the sputtering device " ⁇ " used for the manufacturing male has the configuration shown in the figure.
  • the sputtering device " ⁇ " used for the manufacturing male has the configuration shown in the figure.
  • a supply roll 86 for the core material 100 and a take-up opening 88 are provided inside the true & l 2 of the sputtering apparatus.
  • the rooster S is placed and the " ⁇ " of the core material 100 to be processed is positioned above the target 74 by the intermediate holding rolls 90 and 92.
  • the supply roll 86 and the take-up opening 88 are Each of the core members 100 held by the rotating frame 94 and rotated in the opposite directions by the horse cheek motor 96 to be held between the intermediate holding rows 90 and 92, respectively.
  • the core material 100 can be moved in the direction of the car irtf from the supply roll 86 to the take-up opening 88. It has become.
  • the core material 100 held between 90 and 92 was subjected to magnetron sputtering in a fiber-like manner, and the outer periphery of the core material 100 shown in FIG. 40 will be overwhelmed.
  • the stent 2 is a stent having a substantially cylindrical shape as a whole to be placed in a lumen of a living body, and has a first stent element 4 and a second stent element 6.
  • the first stent element 4 is formed of a material that covers the circumference in the circumferential direction, has an expandable crown, and is hard to fluff after its outer diameter is expanded.
  • the shape whose outer diameter can be expanded is not particularly limited.
  • the shape is a waveform shape, a valley shape, a sine's cosine curve shape, a zigzag shape, a zigzag shape, a zigzag shape, a sawtooth shape, and a pulse shape along the circumferential direction. , Or a combination thereof, or any other repetitive shape or design without a particular repeating pattern.
  • Materials that are not easily crushed after expansion are not limited, but include metals such as stainless steel (for example, annealed suS316), gold, platinum, or alloys thereof. Is exemplified.
  • the second stent element 6 is a stent element for connecting the plurality of knitted 1 stent elements 4 arranged in the lean direction to the lean direction. It is made of elastic metal. Reactive metal has a large range of recoverable bounces, for example, 1% to 10% JiL.In the monomorphic region, it has the property that the force required for change is constant even if the strain increases. . Generally, a superelastic metal has an elastic modulus in the elastic region that is several times smaller than the elastic efficiencies of iron and stainless steel, and is excellent in flexibility. This second stent element 6 has the property of recovering to the original ⁇ e after stress ⁇ against bending deformation of 120 TOLh. preferable.
  • the width Wl and Z or thickness of the first stent element 4 is preferably 30 to 400 u ⁇ , more preferably 50 to 100 ⁇ 1, and the tMW 2 and Z or thickness of the second stent element 6. Is preferably 20 to 10 and more preferably 30 to
  • the unit length L1 in the fat direction of the repeating unit constituting each first stent element 4 is not particularly limited, but is preferably 0.5 to 5 thighs, more preferably 0.8 to 2 thighs.
  • the length L2 in the fat direction of the second stent element 6 is not particularly limited, but is preferably 0.5 to 5 thighs, and more preferably 1.5 to 3 thighs.
  • the second stent element 6 is not necessarily a boat that is a spring parallel to the central axis of the stent, but may be a straight line, a curved line, or a combination thereof.
  • the second stent elements 6 are arranged more sparsely in the circumferential direction than the first stent elements 4. For example, it is preferable to arrange 2 to 6 second stent elements 6 in the circumferential direction of the first stent element 4. Further, the second stent element 6 may connect the peaks of the repeating unit in the first stent element, may connect the valleys, or may connect the valleys and the valleys. You may connect them in the middle.
  • a connecting portion of the first stent element 4 with the second stent element 6 is provided with a contact convex section 4 so that 6 a of the second stent element 6 is overlapped and connected. .
  • This connection is performed by spattering based on a key manufacturing method.
  • the overall dimensions of the stent 2 are appropriately determined according to the purpose of use and the like, and are not particularly limited.
  • the outer diameter of the stent 2 when expanded is preferably 2 ⁇ 5 thighs, the direction length is 15 ⁇ 40 thighs.
  • the length of the stent 2 when the stent 2 is expanded is preferably 3 to 10 females, and the axial length is 15 to 40 thighs.
  • the length of the stent for vascularization is preferably 5 to 30 thighs in the evening when the stent 2 is expanded, and the length in the vehicle direction is 30 to 100 thighs.
  • the surfaces of the first stent element 4 and the second stent element constituting the stent 2 are covered with a plating film and / or a biocompatible coating film. This is to improve biocompatibility. Platinum or gold plating film is used for plating film. You can.
  • the biocompatible coating film include, but are not particularly limited to, ordinary polymers used for (1) such as olefins such as polyethylene, nitrogen-containing polymers such as polyimide / polyamide, and siloxane polymers.
  • the coating film is not limited to a polymer, and may be carbonized or non-carbonized. It may be a coating film of a substance such as carbon such as ilolite carbon and diamond-like carbon.
  • the surface of the stent 2 may be made hydrophilic, or the surface of the stent 2 may be fixed with a biological component or a bacterium fj that prevents restenosis.
  • the thickness of the film is not particularly limited, but the thickness of the plating film is, for example, 0.05 to 5 m, and the thigh of the biocompatible coating film is about 0.1 to 10 m, preferably, 0.5 to 5 ⁇ .
  • a core material 100 is prepared.
  • the material of the core material 100 is the same as that of the core material 1 oo of the liria i real style.
  • a stainless steel first gold film 140 (for example, having a thickness of 50 to 400 m), which is a raw material of the first stent element, is knitted. It is formed by the same magnetron sputtering method as the new method.
  • a first resist film 150 made of a photosensitive resin is applied to the outer peripheral surface of the first metal thin film, and the first resist film 150 is exposed. 5, and processed into a pattern corresponding to 1 stent element 4, and thereafter, the first gold film 140 was etched in accordance with the pattern of the first resist film 150, and the first Obtain the pattern of 1 stent element 4.
  • a second resist film 160 made of a photosensitive resin is exposed, and the second resist film 160 is exposed. Then, a pattern of the opening corresponding to the pattern of the second stent element 6 shown in FIG. 5 is formed on the second resist film 160.
  • magnetron sputtering is performed on the core material 100 on which the first stent element 4 and the second resist film 160 having a predetermined pattern are formed in the same manner as in the above-mentioned iff mode.
  • a pattern corresponding to the opening of the second resist film 160 for example, 3C!
  • a second metal film made of nickel-titanium (100% / m 1) is used. This second gold J3 ⁇ 4 film is Stent element 6.
  • the second resist film 160 is removed in accordance with a standard method, and the core material 100 is stripped of stainless steel having the pattern shown in FIG. The result 2 is obtained.
  • the stent 2 is first mounted on the outer periphery of the balloon portion 10 of the balloon catheter 12 in a contracted state in the vertical direction. It is inserted into a body cavity such as a blood vessel 20. After that, the stent, together with the balloon portion 10 of the norm catheter 12, pierces the inside of the blood vessel 20, which is bent 90 degrees with a liLB, and finally the stenosis portion 22 of the blood vessel 20. To reach. In the stent 2 according to the inflated state, the second stent element 6 mainly bends easily in accordance with the bending ⁇ of the blood vessel 20 and is positioned at the target stenosis part 22, and then the second stent element 6 returns to its original position.
  • the first stent element 4 of the stent 2 is a portion that suppresses the force of the stenotic portion of the expanded 5Sf barley to return to its original state, and is made of a material that is not easily obtained. In addition, restenosis can be effectively prevented.
  • the second stent element 6 easily bends in accordance with the bent shape of the body cavity when the stent 2 is inserted into the body cavity, and is located at the target stenosis. After that, the original likelihood is recovered. Therefore, the flexibility of the stent 2 to follow the bending and the introduction efficiency are improved.
  • the first stent element 4 in the stent 2 is a portion for suppressing the force of the stenotic portion of the enlarged 5 lf to return to its original state, and is made of a material which is not easily purified. Can be prevented by force.
  • the climbing characteristic of nickel-titanium alloy is ⁇ ) a thin metal tube made of gold coating film 40 is fiber-woven, but according to the structure of the present invention, The memory characteristics can be made in the same manner for thin metal tubes made of gold film.
  • the method of the present invention it is possible to manufacture not only a tube but also a thin-walled bottomed cylindrical member such as an object having a bottom at one end.
  • the vapor phase growth method is not limited to magnetron sputtering, and ordinary sputtering, vapor deposition, and the like can be used.
  • magnetron shadering is particularly effective for forming a thin cylindrical member made of a superelastic alloy such as a nickel titanium alloy.
  • a gold tubular member that can be reduced in thickness to, for example, several tens of microns or less, and has no seam welds and excellent mechanical strength. Can be manufactured.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

La présente invention concerne un procédé pour produire un élément métallique cylindrique à paroi mince. Ce procédé consiste à déposer un film métallique mince (40) au moins à la surface périphérique d'un matériau central (100), selon un procédé de croissance en phase gazeuse, tel qu'une projection, puis à retirer le matériau central (100), laissant alors le film métallique mince (40).
PCT/JP2001/005817 2000-08-04 2001-07-04 Procede pour produire un element metallique cylindrique a paroi mince WO2002014577A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-236976 2000-08-04
JP2000236976 2000-08-04

Publications (1)

Publication Number Publication Date
WO2002014577A1 true WO2002014577A1 (fr) 2002-02-21

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PCT/JP2001/005817 WO2002014577A1 (fr) 2000-08-04 2001-07-04 Procede pour produire un element metallique cylindrique a paroi mince

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007171497A (ja) * 2005-12-21 2007-07-05 Canon Inc 樹脂部品
CN102341412A (zh) * 2009-03-05 2012-02-01 梅达莱克斯公司 特异于cadm1 的全人抗体
JP2013087297A (ja) * 2011-10-13 2013-05-13 Sumitomo Electric Ind Ltd 金属膜の製造方法
CN109434395A (zh) * 2018-12-29 2019-03-08 陕西宝成航空仪表有限责任公司 高精度深长孔薄壁套筒类零件的加工方法
WO2020116433A1 (fr) * 2018-12-04 2020-06-11 合同会社山鹿Ｃｌ Stent

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5080934A (fr) * 1973-11-22 1975-07-01
JPH02250971A (ja) * 1989-03-22 1990-10-08 Kobe Steel Ltd 超薄肉管の製造法
JPH0649670A (ja) * 1992-08-04 1994-02-22 Canon Inc 螺旋状部材の製造方法
JPH0679347A (ja) * 1992-09-01 1994-03-22 Mitsubishi Cable Ind Ltd 超弾性合金チューブの製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5080934A (fr) * 1973-11-22 1975-07-01
JPH02250971A (ja) * 1989-03-22 1990-10-08 Kobe Steel Ltd 超薄肉管の製造法
JPH0649670A (ja) * 1992-08-04 1994-02-22 Canon Inc 螺旋状部材の製造方法
JPH0679347A (ja) * 1992-09-01 1994-03-22 Mitsubishi Cable Ind Ltd 超弾性合金チューブの製造方法

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007171497A (ja) * 2005-12-21 2007-07-05 Canon Inc 樹脂部品
CN102341412A (zh) * 2009-03-05 2012-02-01 梅达莱克斯公司 特异于cadm1 的全人抗体
CN102341412B (zh) * 2009-03-05 2018-01-05 梅达雷克斯有限责任公司 特异于cadm1 的全人抗体
JP2013087297A (ja) * 2011-10-13 2013-05-13 Sumitomo Electric Ind Ltd 金属膜の製造方法
WO2020116433A1 (fr) * 2018-12-04 2020-06-11 合同会社山鹿Ｃｌ Stent
JP2020089509A (ja) * 2018-12-04 2020-06-11 合同会社山鹿Ｃｌ ステント
CN109434395A (zh) * 2018-12-29 2019-03-08 陕西宝成航空仪表有限责任公司 高精度深长孔薄壁套筒类零件的加工方法

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