Abstract:
본 발명의 일 실시예에 따른 생체 이식물은 제1생분해성 고분자로 표면이 개질된 염기성 세라믹 입자, 그리고 상기 제1생분해성 고분자와 스테레오 콤플렉스를 이루도록 결합되는 제2생분해성 고분자를 포함하는 세라믹 복합체를 포함한다. 상기 생체 이식물은 생분해성 고분자의 분해 반응에 의하여 발생하는 염증을 억제하는 효과가 탁월하고 기계적 물성도 향상된다.
Abstract:
본 발명은 표면 개질된 금속 입자 및 생분해성 고분자를 포함하는 생체 이식물, 이의 염증 억제용으로서의 용도, 및 (a) 염기성 금속 입자 표면을 고분자로 개질하여 표면 개질 금속 입자를 얻는 단계 및 (b) 상기 표면 개질 금속 입자를 생분해성 고분자와 혼합하여 생분해성 생체 이식물을 제조하거나, 또는 통상의 생체 이식물에 코팅하는 단계를 포함하는, 고분자로 표면 개질된 염기성 금속 입자 및 생분해성 고분자를 포함하는 생체 이식물의 제조 방법에 관한 것이다.
Abstract:
PURPOSE: Biomedical implants containing surface-modified metal particles and biodegradable polymers, the use of the same for suppressing inflammation, and a method for preparing the same are provided to improve the mechanical characteristic of the biodegradable polymers and to suppress the inflammation and cytotoxicity. CONSTITUTION: Biomedical implants contain surface-modified metal particles and biodegradable polymers. Acidic materials generated from the degradation of the biodegradable polymers are neutralized with basic metal particles to suppress inflammation. The basic metal particles are selected from a group including particles of a selected metal and particles of a selected metal compound. The metal is selected from a group including alkali metals and alkali earth metals. The metal compound is selected from a group including the hydroxide of alkali metals, the oxide of alkali metals, the hydroxide of alkali earth metal, and the oxide of alkali earth metal.
Abstract:
PURPOSE: A biomedical implant, use thereof, and a preparation method thereof are provided to suppress inflammation due to the decomposition of biodegradable polymers. CONSTITUTION: A biomedical implant includes basic ceramic particles of which surface is reformed with first biodegradable polymers and second biodegradable polymers which are combined with the first biodegradable polymers and form a stereo complex. The basic ceramic particles neutralize acid materials during the decomposition of polymers and have biocompatibility. The polymers are selected from first biodegradable polymers, second biodegradable polymers, and their combination. A ceramic composite forms a coating layer on the surface of the biomedical implant.
Abstract:
PURPOSE: A method for reforming the surface of a stent is provided to flatten the surface of a stent coated with biodegradable polymers. CONSTITUTION: A method for reforming the surface of a stent includes the following steps: a coating layer is formed by ultrasonic wave-spraying the mixture of a first biodegradable polymer and chemicals to the surface of a stent; the stent with the coating layer is contacted with a solvent; and the solvent is evaporated at a temperature between 20 and 80 deg C. The stent is made of a metal selected from a group including stainless steel, cobalt-chromium, platinum-chromium, tantalum, titanium, nitinol, gold, platinum, silver, and the alloy of the same. The biodegradable polymer is selected from a group including poly(glycolic acid), poly-L-lactic acid, poly-D-lactic acid, poly-D,L-lactic acid, poly-e-caprolactone, poly lactic acid-glycolic acid copolymer, poly-L-lactic acid-e-caprolactone copolymer, poly(ethylene glycol), poly(amino acid), polyanhydride, poly ortho ester, polydioxanone, polyphosphazene, cellulose acetate butylate, cellulose triacetate, and the copolymer of the same.