[특허]Method for forming a tubular medical device

Method for forming a tubular medical device 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B22F-005/10 B21D-031/00 C23C-008/24 C22F-001/18
출원번호	US-0776049 (2013-02-25)
등록번호	US-9034245 (2015-05-19)
발명자 / 주소	Buckman, Jr., Raymond W. Patel, Udayan Furst, Joseph
출원인 / 주소	ICON Medical Corp.
대리인 / 주소	Fay Sharpe LLP
인용정보	피인용 횟수 : 0 인용 특허 : 229

초록

A method and process for at least partially forming a medical device that is at least partially formed of a metal alloy which improves the physical properties of the medical device.

대표청구항 ▼

1. A method for forming a medical device comprising the steps of: a) forming a rod or tube having a surface and an outer cross-sectional area, said rod or tube including a metal alloy that is formed of over 50 weight percent of a solid solution of molybdenum and rhenium or tungsten and tantalum;b) drawing down said outer cross-sectional area of said rod or tube by a reducing mechanism;c) annealing said rod or tube at an annealing temperature in an oxygen reducing environment or inert environment after said rod or tube has been drawn down;d) drawing down said cross-sectional area of said rod or tube by the reducing mechanism after said rod or tube has been annealed; and,e) annealing said rod or tube at least one additional time at an annealing temperature that is a lower temperature than at least one annealing temperature of a previous annealing of said rod or tube. 2. The method as defined in claim 1, wherein said step of forming said rod or tube includes a process of isostatically pressing metal powder together and subsequently sintering said metal power to form said rod or tube in a controlled atmosphere, said rod or tube having an average density of about 0.7-0.95 a minimum theoretical density of said metal alloy, said rod or tube have an average density of about 12-14 gm/cc, said controlled atmosphere including an inert atmosphere, an oxygen reducing atmosphere, or a vacuum. 3. The method as defined in claim 2, wherein said tube is formed by gun drilling, EDM cutting, or combinations thereof a passageway at least partially through a longitudinal length of said rod. 4. The method as defined in claim 1, wherein said step of forming said rod or tube includes a) forming an ingot of metal, b) extruding said ingot through a die to form a rod, c) hollowing out said rod to form a passageway at least partially through a longitudinal length of said rod, and d) polishing a surface of said passageway. 5. The method as defined in claim 4, wherein said step of hollowing includes gun drilling, EDM cutting, or combinations thereof said rod to form said passageway. 6. The method as defined in claim 1, wherein said metal alloy includes over 50 weight percent rhenium plus molybdenum, and up to about 1 weight percent additional metal, said additional metal including a metal selected from the group consisting of titanium, yttrium, zirconium, or mixtures thereof. 7. The method as defined in claim 1, including the step of nitriding said rod or tube to form a nitride layer on said rod or tube prior to at least one drawing down step, said step of nitriding including a) exposing at least a portion of said rod or tube to a nitriding gas that includes nitrogen, nitrogen and hydrogen, or combinations thereof, and b) exposing at least a portion of said rod or tube to a nitriding gas at a temperature of less than about 400° C. for at least about 1 minute. 8. The method as defined in claim 7, including the step of removing said nitride layer on said rod or tube prior to annealing said rod or tube. 9. The method as defined in claim 1, including the step of protecting said rod or tube from oxygen when said rod or tube is exposed to temperatures of greater than about 400° C. 10. The method as defined in claim 1, wherein said step of drawing down said cross-sectional area of said rod or tube by a reducing mechanism that reduces said cross-sectional area by less than about 20% each time said rod or tube is processed by said reducing mechanism. 11. The method as defined in claim 10, wherein said step of drawing down includes the step of inserting a close-fitting rod in said passageway of said tube prior to using said reducing mechanism on said tube. 12. The method as defined in claim 1, wherein said step of annealing said rod or tube includes the steps of a) annealing the rod or tube at an annealing temperature of at least about 1480° C. for a time period of at least about 5 minutes when said rod or tube has wall thickness of greater than about 0.015 inch, b) annealing the rod or tube at an annealing temperature of about 1450-1480° C. for a time period of at least about 5 minutes when said rod or tube has wall thickness of about 0.008-0.015 inch, and c) annealing the rod or tube at an annealing temperature of less than about 1450° C. for a time period of at least about 5 minutes when said rod or tube has wall thickness of less than about 0.008 inch. 13. The method as defined in claim 1, wherein said medical device is a stent. 14. The method as defined in claim 1, where said rod or tube after completion of all of the annealing steps has an average grain size of 4-14 ASTM. 15. The method as defined in claim 1, wherein said initial tube has a wall thickness of about 0.001-0.100 inch.

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Sgro Jean-Claude,FRX, Self-expanding endoprosthesis.
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Bates, Brian L.; Fearnot, Neal E.; Kozma, Thomas G.; Osborne, Thomas A.; Ragheb, Anthony O.; Roberts, Joseph W.; Voorhees, III, William D., Silver implantable medical device.
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Ragheb Anthony O. ; Bates Brian L. ; Fearnot Neal E. ; Osborne Thomas A. ; Kozma Thomas G. ; Roberts Joseph W. ; Voorhees ; III William D., Silver implantable medical device.
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Hostettler Fritz ; Rhum David ; Forman Michael R. ; Helmus Michael N. ; Ding Ni, Slippery, tenaciously adhering hydrogel coatings containing a polyurethane-urea polymer hydrogel commingled with a pol.
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Imran Mir A., Stent.
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Yang Dachuan ; Stanslaski Joel L. ; Wang Lixiao ; Smith Scott R., Stent coating.
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Yang, Dachuan; Stanslaski, Joel L.; Wang, Lixiao; Smith, Scott R., Stent coating.
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Wright, Carol; Llanos, Gerard H.; Rakos, Ronald; King, Kristen, Stent containing rapamycin or its analogs using a modified stent.
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Vrba Anthony C., Stent deployment catheter with midshaft seal.
상세보기
Trapp Rainer,DEX, Stent for the transluminal implantation in hollow organs.
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Fischell Robert E. ; Fischell David R. ; Fischell Tim A., Stent having a multiplicity of undulating longitudinals.
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Imran Mir A., Stent having high radial strength.
상세보기
Hong, James; Cheng, E Tina; Ainsworth, Stephen D., Stent pattern with figure-eights.
상세보기
Scott Neal A. (Atlanta GA) Hanson Stephen R. (Stone Mountain GA) King ; III Spencer B. (Atlanta GA) Harker Laurence A. (Atlanta GA), Stent sheath for local drug delivery.
상세보기
Andrew W. Buirge ; Paul J. Buscemi ; Paul H. Burmeister, Stent with collagen.
상세보기
Lixiao Wang, Stent with smooth ends.
상세보기
Wang, Lixiao, Stent with smooth ends.
상세보기
Wright, Carol; Llanos, Gerard H.; Rakos, Ronald; King, Kristen, Stent with therapeutically active dosage of rapamycin coated thereon.
상세보기
Hillstead, Richard A., Stent-implanting balloon assembly.
상세보기
Ndondo-Lay Robert, Stents.
상세보기
Pinchuk Leonard ; Frid Noureddine,BEX, Stents and stent grafts having enhanced hoop strength and methods of making the same.
상세보기
Duchuan Yang ; Joel Stanslaski ; Lixiao Wang, Surface protection method for stents and balloon catheters for drug delivery.
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Yang Dachuan ; Jacob Carmen ; Wang Lixiao, Surface treatment method for stent coating.
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Yeshurun, Yehoshua, Systems and methods for the transport of fluids through a biological barrier and production techniques for such systems.
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Jayaraman, Swaminathan, Therapeutic coating for an intravascular implant.
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Kunz Lawrence L., Therapeutic inhibitor of vascular smooth muscle cells.
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Kunz Lawrence L., Therapeutic inhibitor of vascular smooth muscle cells.
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Kunz Lawrence L. ; Klein Richard A. ; Reno John M., Therapeutic inhibitor of vascular smooth muscle cells.
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Kunz Lawrence L. ; Klein Richard A. ; Reno John M. ; Grainger David J.,GB2 ; Metcalfe James C.,GB2 ; Weissberg Peter L.,GB2 ; Anderson Peter G., Therapeutic inhibitor of vascular smooth muscle cells.
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Kunz Lawrence L. ; Klein Richard A. ; Reno John M. ; Grainger David J.,GBX ; Metcalfe James C.,GBX ; Weissberg Peter L.,GBX ; Anderson Peter G., Therapeutic inhibitor of vascular smooth muscle cells.
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Kunz, Lawrence L.; Klein, Richard A., Therapeutic inhibitor of vascular smooth muscle cells.
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Kunz, Lawrence L.; Reno, John M., Therapeutic inhibitor of vascular smooth muscle cells.
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Kunz, Lawrence L.; Reno, John M., Therapeutic inhibitor of vascular smooth muscle cells.
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Lawrence L. Kunz ; John M. Reno, Therapeutic inhibitor of vascular smooth muscle cells.
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Lawrence L. Kunz ; Richard A. Klein ; John M. Reno, Therapeutic inhibitor of vascular smooth muscle cells.
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Brauker, James Howard; Butters, Leslie Charles; Davidson, Daniel Francis; Ulm, Mark Joseph, Vascular graft with improved flow surfaces.
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Sinnott Joseph B. (Chandler AZ), Vascular graft with removable sheath.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Method for forming a tubular medical device 원문보기

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Method for forming a tubular medical device 원문보기

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