Artery medicine elution bracket

A technology for eluting stents and drugs, applied in the field of medical devices, can solve problems such as weak operability and safety performance, and achieve the effects of reducing the incidence of stent shedding, reducing bending pressure, and decreasing rebound rate

Inactive Publication Date: 2008-12-03
万瑞飞鸿(北京)医疗器材有限公司
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  • Abstract
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  • Application Information

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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 refl

Method used

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Embodiment Construction

[0015] Such as Figure 1-3 As shown, it is the arterial drug-eluting stent of the present invention, which is a mesh-shaped hollow tubular body made by performing hollowing treatments such as laser engraving and cutting and electrochemical polishing on the cobalt-chromium alloy metal pipe, and its material is preferably L605 cobalt-chromium alloy, the strength of L605 cobalt-chromium alloy material is 1.8 times that of the commonly used 316L stainless steel material, and it has good biocompatibility and very good mechanical strength.

[0016] The arterial drug-eluting stent of the present invention comprises more than one ring-shaped corrugated support rod 1, and the support rod 1 is a non-equal-width thin rod structure with a diameter of 0.07-0.09 mm, which is beneficial to reduce the overall metal coverage of the stent rate, reducing the local inflammatory response and damage after implantation in the human body. The connecting rod 2 is connected between the supporting rods...

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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...

Claims

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Application Information

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IPC IPC(8): A61L31/16A61L31/02A61F2/82
Inventor 张煦王昊飞王惠民
Owner 万瑞飞鸿(北京)医疗器材有限公司
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