An in vitro bending test device for fatigue performance of vascular stent

Abstract

The present invention relates to the technical field of vascular stent testing, in particular to an in vitro bending test device for the fatigue performance of vascular stents, which includes a fixed seat in which a connecting shaft is inserted, and the connecting shaft is driven by a motor to rotate, and also includes a support rod, which is self-connected The inside of the shaft body of the shaft passes vertically, one end of the support rod is fixed to the mounting plate, the first sleeve is fixed on the mounting plate, the outer end of the first sleeve is provided with the first socket, the second sleeve is fixed on the fixing seat, and the second sleeve is fixed on the mounting plate. The outer end of the second sleeve is provided with a second socket, and the distance between the first socket and the second socket is arranged. The support rod and the mounting plate rotate, thereby driving the vascular stent to bend. The whole structure is very simple, and the operation is relatively convenient, realizing automatic testing.

Description

technical field [0001] The invention relates to the technical field of vascular stent testing, in particular to an in vitro bending test device for fatigue performance of vascular stents. Background technique [0002] As early as 1912, the French doctor Alexis first proposed the method of using exogenous substances to support the vessel wall to restore the permeability of the lumen. He implanted paraffin-covered glass tubes and metal tubes into the canine thoracic aorta. In 1964, Dotter et al. continued Alexis’s idea and implanted a prosthetic device in the diseased blood vessel to restore the diameter of the lumen of the blood vessel; in the following years, they successively proposed a variety of implanted devices, such as self-expandable coil stents, etc. to treat stenosis Type vascular disease. For the first time, Rousseau et al. implanted a flexible, self-expanding, stainless steel porous tube stent into the canine coronary artery. In 1977, Grüntzig successfully perfo...

AI Technical Summary

Problems solved by technology

Therefore, the bending fatigue test of vascular stents is particularly important. At present, there is still a lack of a bending fatigue test device with a simple structure and easy operation.

Images