Press insertion coupling device between professional thesis component of joint puroteze

摘要

(57) Abstract The joint kinematic pair of one side joint puroteze which is formed as a socket and the other joint kinematic pair as the spherical head which revolution possibly is supported inside the socket especially is known as shoulder joint puroteze and crotch joint puroteze. In this case, the press insertion coupling device, especially conical tightening expedient is used in the same way as a connected technology with the conical body and the metal make or the spherical head of the ceramics make. In this case, the spherical head suffering is inserted in the conical body by the hole of cone. Suffering after inserting the spherical head, adherence is done in the conical body by the shock for the spherical head. In case of conical tightening expedient, as for the composition plane of the conical body and the hole inside the spherical head processing you must do considerably accurately. Because the notion that where you call that, unless it is processed accurately, the harm causes to the durability of conical tightening expedient on the basis of the spherical head or the uneven power introduction to inside the pin. When the spherical head is produced from ceramics, crack occurs on the basis of the stress peak inside the material and when and it is worst, the spherical head is destroyed. Therefore according to this invention, the connected component which is inserted with the spherical head and the conical body of the press insertion coupling device being provided, elasticity and buff quality of the said connected component, are stipulated beforehand by the porocity of the connected component and the surface structure of the connected component.