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1. (WO2013044833) PREPARATION METHOD FOR MEDICAL POROUS TANTALUM IMPLANT MATERIAL
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2013/044833    International Application No.:    PCT/CN2012/082225
Publication Date: 04.04.2013 International Filing Date: 27.09.2012
IPC:
C22C 1/08 (2006.01), C22C 27/02 (2006.01), A61L 27/04 (2006.01), A61L 27/56 (2006.01)
Applicants: CHONGQING RUNZE PHARMACEUTICAL COMPANY LIMITED. [CN/CN]; No.9 Qinye Road, Yubei Chongqing 401120 (CN)
Inventors: YE, Lei; (CN)
Agent: CHONGQING HONGXU PATENT AGENT LTD.; Room 1604 Building C2 Honghudonglu No.51, Yubei Chongqing 401121 (CN)
Priority Data:
201110296515.7 29.09.2011 CN
Title (EN) PREPARATION METHOD FOR MEDICAL POROUS TANTALUM IMPLANT MATERIAL
(FR) PROCÉDÉ DE PRÉPARATION D'UN MATÉRIAU AU TANTALE POREUX À USAGE MÉDICAL
(ZH) 一种医用多孔钽植入材料的制备方法
Abstract: front page image
(EN)A preparation method for a medical porous tantalum material comprising mixing tantalum powder and an aqueous solution of polyglycolic into a slurry, injecting the slurry into an organic foamed body by using pressuring by vibration, then drying, degreasing, sintering, cooling, and performing a heating process; the mass concentration of the aqueous solution of polyglycolic is 2% to 8%, and the vibration frequency is 20 to 80 times/minute; the sintering step comprises: within a vacuum degree of 10-4 to 10-3 Pa, increasing the temperature to 1500 to 1800°C at a speed of 10 to 20°C/min, maintaining the temperature for 120 to 240 minutes, cooling together with the furnace to 200 to 300°C, increasing the temperature to 1500 to 1800°C at a speed of 10 to 20°C/min, maintaining the temperature for 180 to 240 minutes, increasing the temperature to 2000 to 2200°C at a speed of 5 to 10°C/min, and maintaining the temperature for 120 to 360 minutes; the heating process step comprises: within a vacuum degree of 10-4 to 10-3 Pa, increasing the temperature to 800 to 900°C at a speed of 10 to 20°C/min, maintaining the temperature for 240 to 480 minutes, cooling to 400°C at a speed of 2 to 5°C/min, maintaining the temperature for 120 to 300 minutes, and cooling together with the furnace to room temperature. The porous tantalum prepared using the present method is suitable as a medical implant material for weight-bearing bone tissue replacement, and ensures both biocompatibility and mechanic properties.
(FR)Procédé de préparation d'un matériau au tantale poreux à usagemédical, selon lequel une solution aqueuse d'alcool polyvinlyique est liée à une suspension de poudre de tantale, la suspension étant ajoutée moyennant pression vibratoire à un corps mousseux organique et le mélange étant, par la suite, soumis à séchage, décrassage, frittage, refroidissement et chauffage afin d'obtenir un matériau de tantale poreux à usage médical. Ce matériau au tantale poreux de substitution d'un tissu osseux de support pour implant médical préserve sa biocompatibilité et ses propriétés mécaniques sans avoir recours ni à des réactifs résiduels ni à un corps mousseux organique, ce qui garantit la sécurité biologique.
(ZH)一种医用多孔钽材料的制备方法,将聚乙醇水溶液与钽粉配成浆料,采用震动加压将所述浆料注入有机泡沫体中,再经干燥、脱脂、烧结、冷却和热处理步骤;聚乙烯醇水溶液的质量浓度为2〜8%,所述震动频率为20〜80次/分钟;烧结步骤是真空度为10—4Pa〜10—3Pa,以10〜20°C/min升温至1500〜1800°C、保温120〜240min、随炉冷至200〜300°C,再以10〜20°C/min升温至1500〜1800°C、保温180〜240min,以5〜10°C/min升温至2000〜2200°C、保温120〜360min;所述热处理步骤是真空度为10—4Pa〜10—3Pa,以10〜20°C/min升温至800〜900°C、保温240〜480min,再以2〜5°C/min冷至400°C、保温120〜300min,然后随炉冷却至室温。该方法制备的多孔钽适合用作替代承重骨组织的医用植入材料,同时保证了生物相容性与力学性能。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Chinese (ZH)
Filing Language: Chinese (ZH)