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1. WO2020135088 - METHOD FOR LIMITING DIFFUSION OF WEAR DEBRIS OF IN VIVO IMPLANT

Publication Number WO/2020/135088
Publication Date 02.07.2020
International Application No. PCT/CN2019/124994
International Filing Date 13.12.2019
IPC
A61F 2/36 2006.01
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
02Prostheses implantable into the body
30Joints
32for the hip
36Femoral heads
CPC
A61B 17/70
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws, ; setting implements; or the like
68Internal fixation devices ; , including fasteners and spinal fixators, even if a part thereof projects from the skin
70Spinal positioners or stabilisers ; ; Bone stabilisers comprising fluid filler in an implant
A61F 2/34
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
02Prostheses implantable into the body
30Joints
32for the hip
34Acetabular cups
A61F 2/36
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
02Prostheses implantable into the body
30Joints
32for the hip
36Femoral heads ; ; Femoral endoprostheses
Applicants
  • 李凯 LI, Kai [CN]/[CN]
Inventors
  • 李凯 LI, Kai
Agents
  • 太原晋科知识产权代理事务所(特殊普通合伙) TAIYUAN JINKE INTELLECTUAL PROPERTY ATTORNEY LAW OFFICE(SPECIAL GENERAL PARTNERSHIP)
Priority Data
201811603775.226.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) METHOD FOR LIMITING DIFFUSION OF WEAR DEBRIS OF IN VIVO IMPLANT
(FR) PROCÉDÉ POUR LIMITER LA DIFFUSION DE DÉBRIS D'USURE D'UN IMPLANT IN VIVO
(ZH) 一种限制体内植入物磨屑扩散的方法
Abstract
(EN)
Disclosed are a method for limiting diffusion of wear debris of an in vivo implant, and an in vivo implantation device having a wear debris limiting function. In the present invention, an elastic sealing member is provided at a wear portion between implant components that can move relatively and cause wear, such that a wear debris outlet of an implant is always sealed within a sealed area formed by the sealing member and the implant components to prevent wear debris from diffusing outwards; the elastic sealing member at least comprises a flexible buffer portion; and the flexible buffer portion is used for reducing or completely offsetting relative movement between the implant components, thereby reducing the wear of a sealing portion of the elastic sealing member due to the relative movement between the components. According to the present invention, the problem of wear debris escape is solved; the sealing member is tightly attached to the components of the implant, such that the wear debris cannot escape; and a force of friction between the sealing member and the implant is less than a force for driving the components to move relatively, such that the relative movement between the components cannot be stopped.
(FR)
L'invention concerne un procédé pour limiter la diffusion de débris d'usure d'un implant in vivo, et un dispositif d'implantation in vivo possédant une fonction de limitation de débris d'usure. Dans la présente invention, un élément d'étanchéité élastique est disposé au niveau d'une partie d'usure entre des composants d'implant qui peuvent se déplacer relativement et provoquer une usure, de telle sorte qu'une sortie de débris d'usure d'un implant soit en permanence scellée à l'intérieur d'une zone hermétique formée par l'élément d'étanchéité et les composants d'implant pour empêcher que des débris d'usure se diffusent vers l'extérieur; l'élément d'étanchéité élastique comprend au moins une partie tampon souple; et la partie tampon souple est utilisée pour réduire ou décaler complètement un mouvement relatif entre les composants d'implant, réduisant ainsi l'usure d'une partie d'étanchéité de l'élément d'étanchéité élastique en raison du mouvement relatif entre les composants. Selon la présente invention, le problème d'échappement de débris d'usure est résolu; l'élément d'étanchéité est étroitement fixé aux composants de l'implant, de telle sorte que les débris d'usure ne puissent pas s'échapper; et une force de frottement entre l'élément d'étanchéité et l'implant est inférieure à une force amenant les composants à se déplacer relativement, de telle sorte que le mouvement relatif entre les composants ne puisse pas être arrêté.
(ZH)
本发明公开了一种限制体内植入物磨屑扩散的方法以及具有磨屑限制功能的体内植入装置,本发明是通过在能相对移动、产生磨损的植入物组件间的磨损部位设置弹性密封件,使植入物的磨屑出口始终封闭于密封件与植入物组件形成的密封区内,防止磨屑向外扩散;所述弹性密封件至少包括一个柔性缓冲部位,该柔性缓冲部位用于减少或完全抵消植入物组件间的相对运动,进而减少弹性密封件的密封部位因为部件间相对运动造成的磨损。本发明解决了磨屑逸出的问题,密封件与内植物组件紧密贴合,使磨屑不能外泄,而密封件和内植物之间的摩擦力,小于驱动组件产生相对运动的力,组件间的相对运动不会被阻止。
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