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Archive for the ‘Bioresorbable Vascular Scaffold (BVS)’ Category

Paul G. Yock, Recipient of the 2024 National Medal of Technology and Innovation, Professor of Cardiovascular Medicine at Stanford Medical School

Curator: Aviva Lev-Ari, PhD, RN

NMTI Citation

Paul G. Yock, Stanford University 

For innovations in interventional cardiology. Paul Yock’s visionary work understanding the human heart is applied around the world today to improve patient care and save countless lives. His creation of the Biodesign approach to training future leaders of biotechnology and health care ensures his insights and experience will benefit generations to come.

SOURCES

https://www.uspto.gov/about-us/news-updates/2024-national-medal-technology-and-innovation-laureates-honored-white-house

National Medal of Technology and Innovation (NMTI)

https://www.uspto.gov/learning-and-resources/ip-programs-and-awards/national-medal-technology-and-innovation-nmti

Recipients of the 2024 National Medal of Technology and Innovation, administered by President Joe Biden and Laureates of the National Medal of Science, administered by NSF

https://pharmaceuticalintelligence.com/2025/01/13/recipients-of-the-2024-national-medal-of-technology-and-innovation-administered-by-president-joe-biden-and-laureates-of-the-national-medal-of-science-administered-by-nsf/

 

Paul Yock – The Martha Meier Weiland Professor in the School of Medicine and Professor of Bioengineering, Cardiovascular Medicine, and (by courtesy) of Mechanical Engineering

Scientific Leadership Council Member, Clark Center Faculty

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Targeting Atherosclerotic Plaques with Stents made of Drug-eluting Biomaterials

Reporter: Daniel Menzin, BSc BioMedical Engineering, expected, May 2021, Research Assistant 4, Core Applications Developer and Acting CTO 

 

Atherosclerosis is a chronic cardiovascular disease with a multitude of different implications. A coronary artery plaque may lead to congestive heart failure while an aortic plaque may cause angina. Both can quite possibly lead to a heart attack unless properly managed. One way to manage this condition is through the use of stents made of a mesh that is expanded following placement into the diseased vessel.

Unfortunately, stents are oftentimes initially effective but eventually restenosis occurs. Restenosis is a condition in which the affected vessel becomes blocked again. Cholesterol-rich blood vessel environments oftentimes lead to an irritation that results in white blood cells aggregating in the area and releasing proinflammatory chemokines and cytokines, which cause fibrosis. To make matters worse, the cholesterol plaques undergo compression against the vessel wall which causes vessel injury and further inflammation. This leads to thrombus formation and may potentiate neointimal hyperplasia, an abnormal proliferation and migration of smooth muscle cells in the tunica intima. Neointimal hyperplasia plays a major role in restenosis.

Recent research has found that interfacing drug eluting biomaterials with stents may help prevent restenosis. One study showed that rapamycin delivered with acid labile and ROS-sensitive forms of Beta-cyclodextrin produced promising results when treating atherosclerosis in rat models (Dou, et al). In this promising new paradigm of treatment, non-proinflammatory biomaterials are interfaced with stents. Once inflammation appears the biomaterial will begin to degrade, slowly releasing the drug which suppresses the underlying immune reaction and the resulting inflammation.

 

SOURCE

Dou Y;Chen Y;Zhang X;Xu X;Chen Y;Guo J;Zhang D;Wang R;Li X;Zhang J; “Non-Proinflammatory and Responsive Nanoplatforms for Targeted Treatment of Atherosclerosis.” Biomaterials, U.S. National Library of Medicine, 29 July 2017, pubmed.ncbi.nlm.nih.gov/28778000/.

 

Other related articles published in this Open Access Online Scientific Journal include: 

75 articles found in the search 

https://pharmaceuticalintelligence.com/?s=drug+eluting+stents

 

Among them:

Stent Design and Thrombosis:  Bifurcation Intervention, Drug Eluting Stents (DES) and Biodegrable Stents

Curator: Aviva Lev-Ari, PhD, RN

https://pharmaceuticalintelligence.com/2013/08/06/stent-design-and-thrombosis-bifurcation-intervention-drug-eluting-stents-des-and-biodegrable-stents/

 

Drug Eluting Stents: On MIT‘s Edelman Lab’s Contributions to Vascular Biology and its Pioneering Research on DES

Author: Larry H Bernstein, MD, FACP and Curator: Aviva Lev-Ari, PhD, RN

https://pharmaceuticalintelligence.com/2013/04/25/contributions-to-vascular-biology/

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ACC 2017, 3/30/2017 – Poor Outcomes for Bioresorbable Stents in Small Coronary Arteries

Reporter: Aviva Lev-Ari, PhD, RN

 

WATCH VIDEO:

Bioresorbable Stent Comparable to Xience at Two Years, With Concerns

 

Stephen Ellis, M.D., professor of medicine and director of interventional cardiology at Cleveland Clinic, discusses the two year outcomes of the ABSORB III trial of Absorb vs. Xience. The late-breaking trial was presented at ACC 2017. Read the article on the ABSORB III results.  Watch a VIDEO with Gregg Stone, M.D., “Poor Outcomes for Bioresorbable Stents in Small Coronary Arteries.”

 

SOURCE

https://www.dicardiology.com/videos/video-bioresorbable-stent-comparable-xience-two-years-concerns

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CorPath robotic system for bifurcation lesions with placement of the Absorb GT1 Bioresorbable Vascular Scaffold (BVS) (Abbott Vascular)

Reporter: Aviva Lev-Ari, PhD, RN

 

UPDATED on 4/8/2017

BVS Stent Pulled From European Market – Bioresorbable stent will still be available in a clinical registry setting

by Larry Husten, CardioBrief, April 06, 2017

Abbott Laboratories sent a letter to European physicians informing them that the Absorb Bioresorbable Vascular Scaffold (BVS) and Absorb GT1 BVS “will only be available for use in clinical registry setting at select sites/institutions.”

The company’s action comes in response to an avalanche of bad news for the controversial device. Last fall 3-year results from the ABSORB II trial uncovered a significantly higher rate of target vessel MI. More recently, 2-year results from the pivotal ABSORB III trial confirmed those findings, showing a significant increase in target lesion failure. At the same time the FDA said that it was investigating the stent.

http://www.medpagetoday.com/cardiology/cardiobrief/64391

 

 

Robotic Radial Bifurcation Bioresorbable Vascular Scaffold (BVS) PCI placement of Abbott Vascular’s Absorb GT1

A remote-controlled robotic system was designed to address some of the procedural challenges and occupational hazards associated with traditional percutaneous coronary intervention (PCI) in addition to enhancing the degree of precision and control for the interventional procedure. We report the first large-scale, multicenter study evaluating the safety and efficacy of a novel robotic system for PCI.

 

It demonstrates the capabilities of the technology including double-wire intervention, successful BVS delivery, and the ability to re-cross through a scaffold-strut for branch vessel ostium dilatation. More experience with this technology will potentially add to its utilization in more complex lesions.

Safety and Feasibility of Robotic Percutaneous Coronary Intervention PRECISE (Percutaneous Robotically-Enhanced Coronary Intervention) Study

Author + information

Abstract

Objectives The aim of this study was to evaluate the safety as well as the clinical and technical effectiveness of robotic-assisted percutaneous coronary intervention.

Background Robotic systems have been suggested to enhance the performance of cardiovascular procedures, as well as to provide protection from the occupational hazards that are associated with interventional practice.

Methods Patients with coronary artery disease and clinical indications for percutaneous intervention were enrolled. The coronary intervention was performed with the CorPath 200 robotic system, which consists of a remote interventional cockpit and a bedside disposable cassette that enables the operator to advance, retract, and rotate guidewires and catheters. The primary endpoints were clinical procedural success, defined as <30% residual stenosis at the completion of the robotic-assisted procedure without major adverse cardiovascular events within 30 days, and device technical success, defined as the successful manipulation of the intracoronary devices using the robotic system only.

Results A total of 164 patients were enrolled at 9 sites. Percutaneous coronary intervention was completed successfully without conversion to manual operation, and device technical success was achieved in 162 of 164 patients (98.8%). There were no device-related complications. Clinical procedural success was achieved in 160 of 164 patients (97.6%), whereas 4 (2.4%) had periprocedural non–Q-wave myocardial infarctions. No deaths, strokes, Q-wave myocardial infarctions, or revascularization occurred in the 30 days after the procedures. Radiation exposure for the primary operator was 95.2% lower than the levels found at the traditional table position.

Conclusions This pivotal multicenter study with a robotic-enhanced coronary intervention system demonstrated the safety and feasibility of the system. The robotic remote-control procedure met the expected technical and clinical performance, with significantly lower radiation exposure to the operator. (Evaluation of the Safety and Effectiveness of the CorPath 200 System in Percutaneous Coronary Interventions [PCI] [PRECISE]; NCT01275092)

Reference

1. Weisz G, Metzger DC, Caputo RP, et al. Safety and feasibility of robotic percutaneous coronary intervention. J Am Coll Cardiol 2013;61:1596–1600.

 

SOURCES

J Am Coll Cardiol 2013;61:1596–1600.

http://www.invasivecardiology.com/files/Corindus%20Clinical%20Case%20Update%20-%20October%202016.pdf

http://www.invasivecardiology.com/files/Corindus%20Clinical%20Case%20Update%20-%20December%202016.pdf?inter_email=Zlk4YUF5VU9UQzE5ckNwTUJnRFd0LzJnNnJXRXZSYSt3Q2t1N1ovSmZYWT0=&inter_date=UHUvalFXSTVmSEJvTTR1L1dobWxyQT09

http://2015.icimeeting.com/wp-content/uploads/2015/12/1858-Mahmud-Hall-I-mon.pdf

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