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Biodegradable polymer stent

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https://www.readbyqxmd.com/read/29027737/an-optical-coherence-tomography-study-of-neointimal-morphology-and-strut-coverage-at-different-time-intervals-from-implantation-of-biodegradable-polymer-coated-sirolimus-eluting-stents
#1
Jacek Legutko, Robert J Gil, Pawel E Buszman, Grzegorz L Kaluza, Gary S Mintz, Tomasz Roleder, Marek Krol, Roman Wojdyla, Tomasz Pawlowski, Michal Brzezinski, Marek Kondys, Bartosz Skwarna, Jacek Jakala, Wojciech Zasada, Lukasz Partyka, Dariusz Dudek
OBJECTIVES: The aim of the study was to capture the evolution of neointima after implantation of a biodegradable polymer-coated, sirolimus-eluting, cobalt-chromium coronary stent system (BP-DES). BACKGROUND: Optical coherence tomography (OCT) suggests that in-stent neointimal morphology influences clinical outcomes after DES implantation. METHODS: Sixty patients treated with single BP-DES implantation were examined by quantitative coronary angiography (QCA) and OCT at 3, 6, and 12-month follow-up...
October 13, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29025834/study-protocol-for-a-randomised-controlled-trial-harmonising-optimal-strategy-for-treatment-of-coronary-artery-stenosis-coronary-intervention-with-next-generation-drug-eluting-stent-platforms-and-abbreviated-dual-antiplatelet-therapy-host-idea-trial
#2
Chi-Hoon Kim, Jung-Kyu Han, Han-Mo Yang, Kyung Woo Park, Hae-Young Lee, Hyun-Jae Kang, Bon-Kwon Koo, Namho Lee, Tae-Joon Cha, Tae-Hyun Yang, Myung-Ho Jeong, Myeong-Ho Yoon, Seung Uk Lee, Seung Jin Lee, Jin Won Kim, Jin-Man Cho, Kyu-Rock Han, Wook Bum Pyun, Hyo-Soo Kim
INTRODUCTION: We have recently seen the introduction of newer generation drug-eluting stents with ultrathin struts that use advanced polymer technologies. However, the efficacy and safety of these newest stents have not yet been fully explored. In addition, there are still controversies over the optimal duration of dual antiplatelet therapy (DAPT) after stent implantation, particularly for ultrathin stents with the newest polymer technologies. METHODS AND ANALYSIS: The HOST-IDEA trial is a randomised, open-label, multicentre, non-inferiority trial and the first study to directly compare two of these ultrathin sirolimus-eluting stents: Orsiro stent with biodegradable polymer, and polymer-free Coroflex ISAR (CX-ISAR) stent...
October 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/29020300/impact-of-design-of-coronary-stents-and-length-of-dual-antiplatelet-therapies-on-ischaemic-and-bleeding-events-a-network-meta-analysis-of-64-randomized-controlled-trials-and-102%C3%A2-735-patients
#3
Fabrizio D'Ascenzo, Mario Iannaccone, Gaelle Saint-Hilary, Maurizio Bertaina, Stefanie Schulz-Schüpke, Cheol Wahn Lee, Alaide Chieffo, Gerard Helft, Sebastiano Gili, Umberto Barbero, Giuseppe Biondi Zoccai, Claudio Moretti, Fabrizio Ugo, Maurizio D'Amico, Roberto Garbo, Gregg Stone, Sara Rettegno, Pierluigi Omedè, Federico Conrotto, Christian Templin, Antonio Colombo, Seung-Jung Park, Adnan Kastrati, David Hildick-Smith, Mauro Gasparini, Fiorenzo Gaita
Aims: The differential impact on ischaemic and bleeding events of the type of drug-eluting stent [durable polymer stents [DES] vs. biodegradable polymer stents vs. bioresorbable scaffolds (BRS)] and length of dual antiplatelet therapy (DAPT) remains to be defined. Methods and results: Randomized controlled trials comparing different types of DES and/or DAPT durations were selected. The primary endpoint was Major Adverse Cardiovascular Events (MACE) [a composite of death, myocardial infarction (MI), and target vessel revascularization]...
August 11, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28994655/functional-comparison-between-buma-supreme-biodegradable-polymer-sirolimus-eluting-and-durable-polymer-zotarolimus-eluting-coronary-stents-using-quantitative-flow-ratio-pioneer-qfr-substudy
#4
Taku Asano, Yuki Katagiri, Carlos Collet, Erhan Tenekecioglu, Yosuke Miyazaki, Yohei Sotomi, Giovanni Amoroso, Adel Aminian, Salvatore Brugaletta, Mathias Vrolix, Rosana Hernandez-Antolín, Pim van de Harst, Andres Iñiguez, Luc Janssens, Pieter Smits, Joanna J Wykrzykowska, Vasco Gama Ribeiro, Helder Periera, Pedro Canas da Silva, Jan J Piek, Johan H C Reiber, Clemens von Birgelen, Manel Sabaté, Yoshinobu Onuma, Patrick W Serruys
AIMS: Quantitative Flow Ratio (QFR) based on 3-dimensional quantitative coronary angiography (3D-QCA) is a novel method to assess the physiological functionality after treatment with stents. The current study aimed to evaluate the difference in physiological functionality 9 months after implantation of a bioresorbable polymer-based sirolimus-eluting stent with an electrografting base layer (BuMA Supreme: B-SES) versus a durable polymer-based zotarolimus-eluting stent (Resolute: R-ZES)...
October 10, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28990450/revisiting-the-role-of-durable-polymers-in-cardiovascular-devices
#5
Hiroyoshi Mori, Fumiyuki Otsuka, Anuj Gupta, Hiroyuki Jinnouchi, Sho Torii, Emanuel Harari, Renu Virmani, Aloke V Finn
Polymers are an essential component of drug-eluting stents (DES) used to control drug release but remain the most controversial component of DES technology. There are two types of polymers employed in DES: durable polymer based DES (DP-DES) and biodegradable polymer DES (BP-DES). First-generation DES were exclusively composed of DP and demonstrated increased rates of late stent failure due in part to poor polymer biocompatibility. Newer generations DES use more biocompatible durable polymers or biodegradable polymers...
November 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/28990343/efficacy-and-safety-of-a-biodegradable-polymer-cobalt-chromium-sirolimus-eluting-stent-excel2-in-treating-de-novo-coronary-artery-disease-a-pooled-analysis-of-the-credit-ii-and-credit-iii-trials-doi-10-1002-ccd-26887
#6
Geng Wang, Heyang Wang, Bo Xu, Yuejin Yang, Zhiming Yang, Hui Li, Zheng Zhang, Haichang Wang, Lixia Yang, Yaling Han
No abstract text is available yet for this article.
October 1, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28965166/comparative-assessment-of-three-drug-eluting-stents-with-different-platforms-but-with-the-same-biodegradable-polymer-and-the-drug-based-on-quantitative-coronary-angiography-and-optical-coherence-tomography-at-12-month-follow-up
#7
Robert J Gil, Jacek Bil, Jacek Legutko, Tomasz Pawłowski, Katarzyna E Gil, Dariusz Dudek, Ricardo A Costa
The aim of this study was to compare neointima proliferation in three drug-eluting stents (DES) produced by the same company (Balton, Poland) which are covered with a biodegradable polymer and elute sirolimus (concentration: 1.0 and 1.2 µg/mm(2)), but have different stent platforms and strut thickness: stainless steel Prolim(®) (115 µm) and BiOSS LIM(®) (120 µm) and cobalt-chromium Alex(®) (70 µm). We analyzed data of patients with quantitative coronary angiography (QCA) and optical coherence tomography (OCT) at 12 months from BiOSS LIM Registry, Prolim Registry and Alex OCT clinical trial...
September 30, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28941481/does-the-new-generation-of-drug-eluting-stents-render-bare-metal-stents-obsolete
#8
REVIEW
Kyle Buchanan, Arie Steinvil, Ron Waksman
The development of bare metal coronary stents revolutionized the treatment of coronary artery disease by reducing rates of acute vessel closure and restenosis associated with balloon angioplasty. However, bare metal stents (BMS) resulted in high rates of restenosis and led to the development of drug-eluting stents (DES). Those first-generation DES were followed by successive generations of DES that included improvements, such as biodegradable and more biocompatible polymers. Despite the superiority of the current DES compared to BMS, a subset of patients still receives BMS...
September 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28941154/biodegradable-shape-memory-polymers-in-medicine
#9
REVIEW
Gregory I Peterson, Andrey V Dobrynin, Matthew L Becker
Shape memory materials have emerged as an important class of materials in medicine due to their ability to change shape in response to a specific stimulus, enabling the simplification of medical procedures, use of minimally invasive techniques, and access to new treatment modalities. Shape memory polymers, in particular, are well suited for such applications given their excellent shape memory performance, tunable materials properties, minimal toxicity, and potential for biodegradation and resorption. This review provides an overview of biodegradable shape memory polymers that have been used in medical applications...
September 21, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28923787/first-in-man-randomized-comparison-of-buma-supreme-biodegradable-polymer-sirolimus-eluting-versus-durable-polymer-zotarolimus-eluting-coronary-stents-the-pioneer-trial
#10
Clemens von Birgelen, Taku Asano, Giovanni Amoroso, Adel Aminian, Salvatore Brugaletta, Mathias Vrolix, Rosana Hernandez-Antolín, Pim van de Harst, Andres Iñiguez, Luc Janssens, Pieter C Smits, Joanna J Wykrzykowska, Vasco Gama Ribeiro, Helder Periera, Pedro Canas da Silva, Jan J Piek, Yoshinobu Onuma, Patrick W Serruys, Manel Sabaté
AIMS: A second iteration of a sirolimus-eluting stent (SES) that has a biodegradable PLGA-polymer coating with electrografting base layer on a thin-strut (80µm) cobalt-chromium platform (BuMA Supreme; SINOMED, Tianjin, China) has been developed. This first-in-man trial assessed the efficacy and safety of the novel device. METHODS AND RESULTS: This randomized, multi-center, single-blinded, non-inferiority trial compared BuMA Supreme SES versus contemporary durable polymer zotarolimus-eluting stents (ZES) in terms of angiographic in-stent late lumen loss (LLL) at 9-months follow-up as the primary endpoint...
September 19, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28889769/orsiro-cobalt-chromium-sirolimus-eluting-stent-present-and-future-perspectives
#11
Juan F Iglesias, Marco Roffi, Sophie Degrauwe, Gioel Gabrio Secco, Adel Aminian, Stephan Windecker, Thomas Pilgrim
New-generation drug-eluting stents (DES) represent the current standard of care in patients undergoing percutaneous coronary intervention (PCI). Biodegradable polymer DES (BP-DES) were recently developed to overcome current limitations of newer-generation durable polymer DES (DP-DES) attributed to sustained inflammatory responses induced by permanent polymers. The Orsiro DES (Biotronik AG, Bülach, Switzerland) is a novel thin-strut cobalt-chromium sirolimus-eluting stent with biodegradable polymer that features some of the latest developments in DES technology...
September 19, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28874301/polymer-free-amphilimus-eluting-stent-versus-biodegradable-polymer-biolimus-eluting-stent-in-patients-with-and-without-diabetes-mellitus
#12
Cosmo Godino, Carlo Andrea Pivato, Mauro Chiarito, Michael Donahue, Luca Testa, Riccardo Colantonio, Alberto Cappelletti, Diego Milazzo, Rosario Parisi, Annamaria Nicolino, Shahram Moshiri, Gianfranco Aprigliano, Altin Palloshi, Dennis Zavalloni Parenti, David Rutigliano, Nicola Locuratolo, Francesco Melillo, Andrea Scotti, Luca Arrigoni, Matteo Montorfano, Rossella Fattori, Patrizia Presbitero, Gennaro Sardella, Francesco Bedogni, Alberto Margonato, Carlo Briguori, Antonio Colombo
OBJECTIVES: This study sought to compare clinical outcome of polymer-free amphilimus-eluting stent (PF-AES) versus biodegradable-polymer biolimus-eluting stent (BD-BES) in "all-comer" diabetes mellitus (DM) and non-DM patients who underwent percutaneous coronary intervention. BACKGROUND: The PF-AES has shown promising preliminary results in patients with DM. METHODS: Data from 2 multicentre-national registries (the ASTUTE and the INSPIRE-1) were used to analyse 1776 patients stratified in non-DM and DM...
October 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28870882/2-year-outcome-after-biodegradable-polymer-sirolimus-and-biolimus-eluting-coronary-stents-from-the-randomized-sort-out-vii-trial
#13
Lisette Okkels Jensen, Michael Maeng, Bent Raungaard, Knud Nørregaard Hansen, Johnny Kahlert, Svend Eggert Jensen, Henrik Steen Hansen, Jens Flensted Lassen, Hans Erik Bøtker, Evald Høj Christiansen
AIMS: The SORT OUT VII trial compared the thin-strut cobalt-chromium sirolimus-eluting Orsiro stent with a slow polymer degradation and the thicker-strut stainless steel biolimus-eluting Nobori stent with a moderate-term polymer degradation in an all-comer patient population. METHODS AND RESULTS: The 2-year pre-specified endpoint target lesion failure did not differ significantly between the sirolimus-eluting stent: 6.7% and the biolimus-eluting stent: 7.0% (rate ratio (RR) 0...
September 5, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28846543/final-five-year-outcomes-after-implantation-of-biodegradable-polymer-coated-biolimus-eluting-stents-versus-durable-polymer-coated-sirolimus-eluting-stents
#14
Lars Jakobsen, Evald H Christiansen, Michael Maeng, Knud N Hansen, Steen D Kristensen, Hans E Bøtker, Christian J Terkelsen, Svend E Jensen, Bent Raungaard, Morten Madsen, Jens F Lassen, Lisette O Jensen
AIMS: To report long-term safety and efficacy of the biodegradable polymer-coated biolimus-eluting Nobori stent compared to the durable polymer-coated sirolimus-eluting Cypher stent. METHODS AND RESULTS: SORT OUT V randomized 2,468 patients 1:1 to the Nobori (n=1,229) versus the Cypher stent (n=1,239). Clinically driven event detection based on Danish registries was used. The primary endpoint was a composite of safety (cardiac death, myocardial infarction, definite stent thrombosis) and efficacy (target vessel revascularization)...
August 29, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28838256/comparative-study-of-different-polymeric-coatings-for-the-next-generation-magnesium-based-biodegradable-stents
#15
Gholamreza Ahmadi Lakalayeh, Mostafa Rahvar, Esmaeil Haririan, Roya Karimi, Hossein Ghanbari
Development of next-generation bioabsorbable stents based on magnesium alloys is gaining lots of attention. However, finding an appropriate coating in order to enhance its corrosion resistance along with preserving other requirements is still a challenge. In this study, three FDA-approved polymers, namely poly(lactic acid), polycaprolactone and poly(lactic-co-glycolic acid), have been investigated as potential coatings for magnesium-based stents to enhance their corrosion resistance, biocompatibility and haemocompatibility...
August 24, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28826352/pcl-pdms-pcl-copolymer-based-microspheres-mediate-cardiovascular-differentiation-from-embryonic-stem-cells
#16
Liqing Song, Mohammad Faisel Ahmed, Yan Li, Julie Bejoy, Changchun Zeng, Yan Li
Poly-ɛ-caprolactone (PCL) based microspheres have received much attention as drug or growth factor delivery carriers and tissue engineering scaffolds due to their biocompatibility, biodegradability, and tunable biophysical properties. In addition, PCL and polydimethylsiloxane (PDMS) can be fabricated into thermoresponsive shape memory polymers for various biomedical applications (e.g., smart sutures and vascular stents). However, the influence of biophysical properties of PCL-PDMS based microspheres on stem cell lineage commitment has not been well understood...
September 28, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28800599/extracting-information-from-free-text-electronic-patient-records-to-identify-practice-based-evidence-of-the-performance-of-coronary-stents
#17
Yoon Seob Kim, Dukyong Yoon, JungHyun Byun, Hojun Park, Ahram Lee, Il Hyun Kim, Sukhoon Lee, Hong-Seok Lim, Rae Woong Park
BACKGROUND AND OBJECTIVE: Percutaneous coronary intervention (PCI) using drug-eluting stents (DES) is an indispensable treatment for coronary artery disease. However, to evaluate the performance of various types of stents for PCI, numerous resources are required. We extracted clinical information from free-text records and, using practice-based evidence, compared the efficacy of various DES. MATERIALS AND METHODS: We developed a text mining tool based on regular expression and applied it to PCI reports stored in the electronic health records (EHRs) of Ajou University Hospital from 2010-2014...
2017: PloS One
https://www.readbyqxmd.com/read/28797113/clinical-outcomes-of-biodegradable-polymer-biolimus-eluting-biomatrix-stents-versus-durable-polymer-everolimus-eluting-xience-stents
#18
MULTICENTER STUDY
Da Hyon Lee, Taek Kyu Park, Young Bin Song, Woo Jung Chun, Rak Kyeong Choi, Jin-Ok Jeong, Eul Soon Im, Sang Wook Kim, Joo Myung Lee, Jeong Hoon Yang, Joo-Yong Hahn, Seung-Hyuk Choi, Jin-Ho Choi, Sang Hoon Lee, Hyeon-Cheol Gwon
There are limited data about clinical outcomes of biodegradable polymer biolimus-eluting BioMatrix stents (BP-BES) and durable polymer everolimus-eluting Xience stents (DP-EES) in real world practice. We sought to compare the clinical outcomes of BP-BES and DP-EES in real world cohorts of patients undergoing percutaneous coronary intervention. A prospective multicenter registry enrolled 999 patients treated with BP-BES and 1,000 patients treated with DP-EES. The primary outcome was target lesion failure, defined as a composite of cardiac death, target vessel-related myocardial infarction, or target lesion revascularization...
2017: PloS One
https://www.readbyqxmd.com/read/28796171/research-on-a-nonwoven-fabric-made-from-multi-block-biodegradable-copolymer-based-on-l-lactide-glycolide-and-trimethylene-carbonate-with-shape-memory
#19
Joanna Walczak, Michał Chrzanowski, Izabella Krucińska
The presented paper concerns scientific research on processing a poly(lactide-co-glycolide-co-trimethylene carbonate) copolymer (PLLAGLTMC) with thermally induced shape memory and a transition temperature around human body temperature. The material in the literature called terpolymer was used to produce smart, nonwoven fabric with the melt blowing technique. Bioresorbable and biocompatible terpolymers with shape memory have been investigated for its medical applications, such as cardiovascular stents. There are several research studies on shape memory in polymers, but this phenomenon has not been widely studied in textile products made from shape memory polymers (SMPs)...
August 10, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28741576/a-randomized-comparison-of-biodegradable-polymer-and-permanent-polymer-coated-platinum-chromium-everolimus-elutingcoronary-stents-in-china-the-evolve-china-study
#20
YaLing Han, Haiwei Liu, Yuejin Yang, Jian Zhang, Kai Xu, Guosheng Fu, Xi Su, Tiemin Jiang, Wenyue Pang, Jiyan Chen, Zuyi Yuan, Hui Li, Haichang Wang, Tao Hong, Huiliang Liu, Fucheng Sun, Dominic J Allocco, Mingdong Zhang, Keith D Dawkins
AIMS: The EVOLVE China randomized study sought to evaluate clinical safety and effectiveness of the SYNERGY bioabsorbable polymer-coated everolimus-eluting stent (EES) for the treatment of patients with coronary heart disease in China. METHODS AND RESULTS: Eligible patients with de novo native coronary artery lesions were randomized (1:1) to receive the SYNERGY or PROMUS Element Plus (PE Plus) stents. The primary endpoint was in-stent late loss at 9 months. Secondary endpoints included death, MI, revascularization, and stent thrombosis through 12 months...
July 25, 2017: EuroIntervention
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