نتایج جستجو برای: biodegradable

تعداد نتایج: 12804  

Journal: :Endoscopy international open 2016
John Gásdal Karstensen Katrine Risager Christensen Jørn Brynskov Claus Rønholt Peter Vilmann Jakob Hendel

BACKGROUND AND STUDY AIMS In patients with Crohn's disease, the idea of biodegradable stents for treatment of bowel strictures with limited effect of endoscopic balloon dilation is tempting and initial results have been promising. The aim of this study was to evaluate the technical and clinical success of biodegradable stents for treatment of inflamed Crohn's strictures refractory to endoscopic...

2015
Zeeshan Sheikh Shariq Najeeb Zohaib Khurshid Vivek Verma Haroon Rashid Michael Glogauer

This review discusses and summarizes the recent developments and advances in the use of biodegradable materials for bone repair purposes. The choice between using degradable and non-degradable devices for orthopedic and maxillofacial applications must be carefully weighed. Traditional biodegradable devices for osteosynthesis have been successful in low or mild load bearing applications. However...

2014
Cheng-Hung Lee Chia-Ying Yu Shang-Hung Chang Kuo-Chun Hung Shih-Jung Liu Chao-Jan Wang Ming-Yi Hsu I-Chang Hsieh Wei-Jan Chen Yu-Shien Ko Ming-Shien Wen

INTRODUCTION This work reports on the development of a biodegradable dual-drug-eluting stent with sequential-like and sustainable drug-release of anti-platelet acetylsalicylic acid and anti-smooth muscle cell (SMC) proliferative paclitaxel. METHODS To fabricate the biodegradable stents, poly-L-lactide strips are first cut from a solvent-casted film. They are rolled onto the surface of a metal...

2017
Xue Han Xia Wu Michael Kelly Xiongbiao Chen

An aneurysm is a balloon-like bulge in the wall of blood vessels, occurring in major arteries of the heart and brain. Biodegradable polymeric stent-assisted coiling is expected to be the ideal treatment of wide-neck complex aneurysms. This paper presents the development of methods to fabricate and optimally design biodegradable polymeric stents for aneurysms treatment. Firstly, a dispensing-bas...

2014
Yung-Heng Hsu Dave Wei-Chih Chen Chun-Der Tai Ying-Chao Chou Shih-Jung Liu Steve Wen-Neng Ueng Err-Cheng Chan

We developed biodegradable drug-eluting nanofiber-enveloped implants that provided sustained release of vancomycin and ceftazidime. To prepare the biodegradable nanofibrous membranes, poly(D,L)-lactide-co-glycolide and the antibiotics were first dissolved in 1,1,1,3,3,3-hexafluoro-2-propanol. They were electrospun into biodegradable drug-eluting membranes, which were then enveloped on the surfa...

Journal: :Journal of biomaterials science. Polymer edition 2010
Dipendra Gyawali Richard T Tran Kristine J Guleserian Liping Tang Jian Yang

Citric-acid-derived thermally cross-linked biodegradable elastomers (CABEs) have recently received significant attention in various biomedical applications, including tissue-engineering orthopedic devices, bioimaging and implant coatings. However, citric-acid-derived photo-cross-linked biodegradable elastomers are rarely reported. Herein, we report a novel photo-cross-linked biodegradable elast...

Journal: :Biomaterials 2009
Xiaoxiao Han Jingzhe Pan

This paper completes the model of biodegradation for biodegradable polymers that was previously developed by Wang et al. (Wang Y, Pan J, Han X, Sinka, Ding L. A phenomenological model for the degradation of biodegradable polymers. Biomaterials 2008;29:3393-401). Crystallisation during biodegradation was not considered in the previous work which is the topic of the current paper. For many common...

Journal: :Journal of biomedical materials research. Part B, Applied biomaterials 2016
Mohamadreza Nassajian Moghadam Dominique P Pioletti

Hydrogels are widely used in the biomedical field. Their main purposes are either to deliver biological active agents or to temporarily fill a defect until they degrade and are followed by new host tissue formation. However, for this latter application, biodegradable hydrogels are usually not capable to sustain any significant load. The development of biodegradable hydrogels presenting load-bea...

Journal: :The Journal of heart valve disease 2006
Afksendiyos Kalangos Jorge Sierra Dominique Vala Mustafa Cikirikcioglu Beat Walpoth Xavier Orrit José Pomar Carlos Mestres Sonia Albanese Dhanjay Jhurry

BACKGROUND AND AIM OF THE STUDY The biodegradable ring was recently developed for mitral and tricuspid annuloplasty. The study aim was to assess the histological biocompatibility of the biodegradable ring and orifice area growth in a porcine model. METHODS The smallest (size 16) biodegradable ring was implanted into the tricuspid annulus of 16 juvenile pigs. All animals were followed up by tr...

Journal: :Soft matter 2010
Richard T Tran Paul Thevenot Dipendra Gyawali Jung-Chih Chiao Liping Tang Jian Yang

The need for advanced materials in emerging technologies such as tissue engineering has prompted increased research to produce novel biodegradable polymers elastic in nature and mechanically compliant with the host tissue. We have developed a soft biodegradable elastomeric platform biomaterial created from citric acid, maleic anhydride, and 1,8-octanediol, poly(octamethylene maleate (anhydride)...

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