Artery medicine elution bracket

Abstract

The present invention discloses an artery medicament elution bracket, which is a net-shaped hollow tubular body made by processing a cobalt-chromium alloy with laser engraving and electro-polishing cochrome. The bracket comprises more than one annular-wave-shaped supporting bar and connecting rods which are alternately and spirally connected between the supporting bars. The shape of the connecting rod is an array of waves formed by more than one connected sinusoidal waveform unit, and curve-shaped connected bend angles with different radiuses are positioned at the fold positions of wave crests and the wave troughs of the sinusoidal waveform unit. The shape of the connecting rod is an S-shaped sinusoid section connected with a straight line section. The surface of the bracket is covered by a medicament coating. The fold positioned at the wave crests and the wave troughs of the sinusoidal waveform unit adopt curve-shaped bend angles with unequal radiuses so that the blend pressure of the support bars is reduced, the rebound degree is reduced, and the bracket abscission incidence rate due to the insufficient retentivity is reduced. After being pressed and held, the bracket has a passing outer diameter of between 1 and 1.08mm. The possibility and the operability of the bracket are apparently improved.

Description

technical field [0001] The invention belongs to the field of medical instruments, and more specifically, relates to a medical treatment device for inserting into a blood vessel, in particular to an arterial drug-eluting stent made of metal inserted into an artery for treatment Used for cardiovascular and cerebrovascular stenosis. Background technique [0002] Arterial stent implantation is a minimally invasive interventional treatment technique for coronary heart disease that appeared in the mid-1980s and developed rapidly in the past five years. Auxiliary devices such as sheath, angiography guide wire, angiography catheter, guide catheter, guide wire, balloon dilation catheter, etc., will finally deliver the stent to the lesion stenosis in the artery. The structural metal stent enables the stent to support the narrowed diseased artery, so as to achieve the therapeutic purpose of restoring the diameter of the lumen and ensuring normal blood flow. This method has become one...

AI Technical Summary

Problems solved by technology

At present, there is little difference in material selection and structural design of arterial drug-eluting stents on the market, which basically reflect the good flexibility and support performance of the stents, but the performance is relatively weak in terms of operability and safety performance.

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