An original device and a method of its application allow to achieve adequate correction of a function of vein valves, to improve venous blood flow with a relatively lower decrease of the vein mobilization at its long extension. Application of the new device allows to lower trauma possibility, to shorten operation time and post-operative period. The long-term results of six-year long experience of its application are presented. The patients examination after 6-year post-operation period shows perfect vein valve correction. A device for stone extraction from tubular organs (patented) fabricated with titanium nickelide superelastic alloy is presented. The new suggested design is free of the drawback inherent in the previous one. The working element of the device is formed as a truncated cone or a truncated cone coaxial with the cylinder that prevents overstraining and residual strain accumulation during the manipulation process. Since the first publication the design of spiral stent and its delivering system were exposed to significant changes. In spite of a number of successful operations carried out by means of reported devices the last one is not free from some negative features. The new patented variants of the device for stent implantation also differs from the previous one by the performing of the assembly for adjusting and fixing the position of the stent. The new device comprises superelastic nitinol working elements which provide its efficiency and reliability. The superelastic guide for tendons or implants of flexors of hand fingers is presented.

Індекс рубрикатора НБУВ: К232.204.3

Рубрики:

Структурні та фазові перетворення у нікелі та його сплавах

Шифр НБУВ: Ж14161 Пошук видання у каталогах НБУВ 

Індекс рубрикатора НБУВ: К232.204.3

Рубрики:

Структурні та фазові перетворення у нікелі та його сплавах

Шифр НБУВ: Ж14161 Пошук видання у каталогах НБУВ 

Opportunity of electropulse impact application to increase deformability of the hard deformed alloy during severe plastic deformation is examined. For the first time display of electroplastic effect (EPE) in coarse-grained TiNi alloy with shape memory effect is investigated. It is shown that EPD by cold rolling significantly increases total and single strain to failure. The formation of amorphous, nanocrystalline and UFG structures by EPD depends on the pulse current density that is critical parameter of the new method.