Spatiotemporally multicontrollable inteligent drug-eluting stent

Patent metadata

Field	Value
Publication number	US-2017087280-A1
Application number	US-201615041239-A
Country	US
Kind code	A1
Filing date	Feb 11, 2016
Priority date	Sep 24, 2015
Publication date	Mar 30, 2017
Grant date	—

Abstract

The present invention relates to a spatiotemporally multicontrollable intelligent drug-eluting adjustable stent, and a manufacturing method thereof, and includes a stent, a nano-coupling layer formed on the inner and outer surfaces of the stent and including a bioactive material into which a catechol group-containing adhesive derivative is introduced, and a second coating layer formed on the upper portion of the first coating layer and on the nano-coupling layer at the inner portion of the stent, and including an antithrombotic agent and an anti-inflammatory agent.

First claim

What is claimed is:

1 . A drug-eluting stent comprising:
a stent; a nano-coupling layer formed on the inner and outer surfaces of the stent and including a bioactive material into which a catechol group-containing adhesive derivative is introduced; a first coating layer formed on the nano-coupling layer on the outer surface of the stent and comprising a restenosis preventing agent and an anti-inflammatory agent, which are mixed with a biocompatible and biodegradable polymer; and a second coating layer formed on the first coating layer on the outer surface of the stent and on the nano-coupling layer on the inner surface of the stent, and comprising an antithrombotic agent and an anti-inflammatory agent, which are mixed with a biocompatible and biodegradable polymer.

2 . The drug-eluting stent of claim 1 , wherein the stent is a metal material selected from the group consisting of stainless steel, cobalt-chromium, platinum-chromium, tantalum, titanium, nitinol, platinum-iridium, iron, gold, platinum, silver, magnesium, and alloys thereof, or a polymer material selected from the group consisting of poly(glycolic acid) (PGA), poly(L-lactic acid) (PLLA), poly(D-lactic acid) (PDLA), poly(D,L-lactic acid) (PDLLA), poly(c-caprolactone) (PCL), poly(lactic acid-co-glycolic acid) (PLGA), poly(L-lactic acid-co-c-caprolactone) (PLCL), tyrosine polycarbonate, salicylic acid-containing polymers, polyethylene glycol, polyamino acid, polyanhydride, polyorthoester, polydioxanone, polyphosphazene, cellulose acetate butyrate, cellulose triacetate, and copolymers thereof.

3 . The drug-eluting stent of claim 1 , wherein the bioactive material of the nano-coupling layer is selected from the group consisting of hyaluronic acid, acetylated hyaluronic acid, chondroitin sulfate, heparin, heparan sulfate, dextran, dextran sulfate, dermatan sulfate, and keratan sulfate and, vita-hyaluronic acid, vita-acetylated hyaluronic acid, vita-chondroitin sulfate, vita-heparin, vita-heparan sulfate, vita-dextran, vita-dextran sulfate, vita-dermatan sulfate, and vita-keratan sulfate mean that any one of vitamin A, a vitamin B complex, vitamin C, vitamin D, vitamin E, vitamin F, vitamin K, vitamin U, vitamin L, and vitamin P each combines with hyaluronic acid, acetylated hyaluronic acid, chondroitin sulfate, heparin, heparan sulfate, dextran, dextran sulfate, dermatan sulfate, or keratan sulfate.

4 . The drug-eluting stent of claim 1 , wherein the catechol group-containing adhesive derivative is selected from the group consisting of dopamine, norepinephrine, epinephrine, 3,4-dihydroxybenzylamine, 3,4-dihydroxycinnamic acid, 3,4-dihydroxyphenyl acetic acid, 3,4-dihydroxymandelic acid, 3,4-dihydroxyphenyl lactic acid, 3,4-dihydroxyphenylalanine, 2-(3,4-dihydroxyphenyl)ethanol, 3,4-dihydroxyphenylethyleneglycol, 3,4-dihydroxyphenylacetaldehyde, 3,4-dihydroxyphenylglycol aldehyde, and isoproterenol.

5 . The drug-eluting stent of claim 1 , wherein the biocompatible polymer of the first coating layer is a polymer having a molecular weight in a range of 5,000 to 500,000, selected from the group consisting of polyvinyl alcohol, polyethylene glycol, polylactide, polyglycolide, polylactide copolymers, polycaprolactone copolymers, polyethylene oxide, polydioxanone, and polyvinylpyrrolidone.

6 . The drug-eluting stent of claim 1 , wherein the restenosis preventing agent of the first coating layer is selected from the group consisting of alpha-lipoic acid, Abciximab, sirolimus, sirolimus derivatives, paclitaxel, dexamethasone, tacrolimus, mycophenolic acid, estradiol, taxol, colchicine, lovastatin, trapidil, hirudin, ticlopidine, and nitrogen oxides.

7 . The drug-eluting stent of claim 1 , wherein the anti-inflammatory agent of the first coating layer and the second coating layer is selected from the group consisting of magnesium, magnesium oxide, magnesium fluoride, magnesium chloride, magnesium hydroxide, lithium hydroxide, beryllium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide, strontium hydroxide, barium hydroxide, cesium hydroxide, francium hydroxide, and radium hydroxide.

8 . The drug-eluting stent of claim 1 , wherein the anti-inflammatory agent of the second coating layer is one or more selected from the group consisting of vinpocetine, Ac-SDKP, propolis, ibuprofen, diclofenac, and naproxen.

9 . The drug-eluting stent of claim 1 , wherein the antithrombotic agent of the second coating layer is one or more selected from the group consisting of aspirin, propolis, heparin, prasugrel, ticagrelor, and clopidogrel.

Assignees

• Korea Inst Sci & Tech

Inventors

• Han Dongkeun
• JOUNG Yoonki
• KANG Jonghee
• Lih Eugene
• Kim Seongmin

Classifications

• C07K16/2848

  against integrin beta3-subunit-containing molecules, e.g. CD41, CD51, CD61 · CPC title

• C07K2317/24

  containing regions, domains or residues from different species, e.g. chimeric, humanized or veneered · CPC title

• A61K33/00

  Medicinal preparations containing inorganic active ingredients · CPC title

• A61L2300/42

  Anti-thrombotic agents, anticoagulants, anti-platelet agents · CPC title

• A61K31/196

  the amino group being directly attached to a ring, e.g. anthranilic acid, mefenamic acid, diclofenac, chlorambucil · CPC title