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1. WO2013152728 - BIOABSORBABLE MEDICAL DEVICE OR MEDICAL DEVICE COMPONENT AND PREPARATION METHOD THEREOF

Publication Number WO/2013/152728
Publication Date 17.10.2013
International Application No. PCT/CN2013/074065
International Filing Date 11.04.2013
IPC
A61F 2/00 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
A61L 31/14 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
31Materials for other surgical articles
14Materials characterised by their function or physical properties
C23C 8/26 2006.1
CCHEMISTRY; METALLURGY
23COATING 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
CCOATING 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
8Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
06using gases
08only one element being applied
24Nitriding
26of ferrous surfaces
CPC
A61F 2/86
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
86Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
A61F 2210/0004
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2210Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
0004bioabsorbable
A61F 2240/001
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2240Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
001Designing or manufacturing processes
A61F 2250/0019
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2250Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
0014having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
0019differing in hardness, e.g. Vickers, Shore, Brinell
A61F 2250/003
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2250Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
0014having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
003differing in adsorbability or resorbability, i.e. in adsorption or resorption time
A61L 27/042
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
27Materials for ; grafts or; prostheses or for coating ; grafts or; prostheses
02Inorganic materials
04Metals or alloys
042Iron or iron alloys
Applicants
  • 先健科技(深圳)有限公司 LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD. [CN]/[CN]
Inventors
  • 张德元 ZHANG, Deyuan
  • 林文娇 LIN, Wenjiao
  • 刘香东 LIU, Xiangdong
  • 王文斌 WANG, Wenbin
Agents
  • 深圳中一专利商标事务所 SHENZHEN ZHONGYI PATENT AND TRADEMARK OFFICE
Priority Data
201210106761.612.04.2012CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) BIOABSORBABLE MEDICAL DEVICE OR MEDICAL DEVICE COMPONENT AND PREPARATION METHOD THEREOF
(FR) DISPOSITIF MÉDICAL BIOABSORBABLE OU COMPOSANT DE DISPOSITIF MÉDICAL ET PROCÉDÉ DE PRÉPARATION ASSOCIÉ
(ZH) 生物可吸收的医疗器械或医疗器械部件及其制作方法
Abstract
(EN) A bioabsorbable medical device or a medical device component comprises an absorbable component prepared by subjecting a prefabricated component of an iron-based raw material to ion nitriding. Substance composition inside the absorbable component changes with the depth from the surface. The absorbable component comprises at least a first part and a second part. The first part surrounds the second part. Hardness of the first part is higher than hardness of the second part. An interface exists between the first part and the second part. A crack generated in the first part is impeded by the interface when extending to the second part. On the premise of ensuring radial stand strength, the bioabsorbable medical device or medical device component and a preparation method thereof reduce wall thickness of an iron-based stand, improve a stand corrosion rate and malleability, and achieve broader adaptability.
(FR) La présente invention concerne un dispositif médical bioabsorbable ou un composant de dispositif médical qui comprend un composant bioabsorbable préparé par soumission d'un composant préfabriqué d'une matière première à base de fer à une nitruration ionique. La composition de matière à l'intérieur du composant absorbable change avec la profondeur depuis la surface. Le composant absorbable comprend au moins une première partie et une seconde partie. La première partie entoure la seconde partie. La dureté de la première partie est supérieure à la dureté de la seconde partie. Une interface existe entre la première partie et la seconde partie. L'extension à la seconde partie d'une fissure générée dans la première partie est empêchée par l'interface. En vue d'assurer une résistance de support radiale, le dispositif médical bioabsorbable ou le composant de dispositif médical et un procédé de préparation associé réduisent l'épaisseur de paroi d'un support à base de fer, améliorent un taux de corrosion et une malléabilité du support, et permettent une plus grande adaptabilité.
(ZH) 一种生物可吸收的医疗器械或医疗器械部件,其包括对铁基原材料的预制部件进行离子渗氮处理而制成的可吸收部件,所述可吸收部件内部的物质成分随着距表面的深度而变化,所述可吸收部件包括至少第一部分和第二部分,所述第一部分包围所述第二部分,所述第一部分的硬度高于第二部分的硬度,所述第一部分与第二部分之间具有一界面,所述第一部分内产生的裂纹向所述第二部分扩展时受到所述界面的阻碍。该生物可吸收的医疗器械或医疗器械部件及其制作方法,在保证支架径向强度的前提下,减小铁基支架的壁厚,提高支架腐蚀速率以及柔顺性,并且具有更广的适应性。
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