INTRODUCTION Balloon expandable stents are an integral part in the catheter treatment of congenital heart disease. In the growing child, stents require dilatation to greater diameters over time. The Cook Formula stent is a recent 316 stainless steel open-cell design licensed for peripheral vascular work. METHODS Following extensive ex vivo studies, 112 stents were implanted in 97 children [me...

Type 1 endoleak of common iliac artery (type I(b) endoleak) should be treated during endovascular aneurysm repair (EVAR). An 86-year-old female was diagnosed with abdominal aortic aneurysm measuring 6.6 cm in diameter and right internal iliac artery aneurysm measuring 4.0 cm in diameter. She underwent EVAR after right internal iliac artery embolization. There was type I(b) endoleak, which was r...

A patient with hypopharyngeal cancer developed carotid blowout syndrome (CBS) treated by self-expandable stent-graft in the left carotid artery. CT scan for progressive right hemiparesis 4 months later showed multiple left cerebral abscesses and left carotid thrombosis. Although deployment of stent-grafts for CBS can achieve initial hemostasis in patients with head-and-neck cancer, the placemen...

Puncture site complications such as arteriovenous fistula after femoral arterial catheterizations are becoming more common with the increasing number of endovascular procedures being performed by interventional radiologists and cardiologists. Covered stent placement with endovascular technique for these lesions represents an appealing treatment alternative because it is only minimally invasive ...

BACKGROUND Stent design may influence the outcomes, suggesting that adverse event rates vary according to free cell area and cell design. Open cell design technology of self-expandable stents, dedicated for carotid revascularisation has better deliverability, although closed cell technology is expected to cause fewer thromboembolic events. AIM To evaluate the feasibility and vascular response...

OBJECTIVES This study sought to evaluate the structural integrity of balloon-expandable stents used in transcatheter aortic valve replacement. BACKGROUND Underexpansion, deformation, or fracture of stent frames may affect transcatheter heart valve (THV) function and durability. METHODS Patients >1 year after transcatheter aortic valve replacement underwent multidetector computed tomography....

PURPOSE To investigate the incidence, anatomical location, and clinical impact of fractures and/or compression of infrapopliteal balloon-expandable metal stents implanted for critical limb ischemia (CLI) treatment. METHODS This prospective study included 63 CLI patients (45 men; mean age 71.3+/-9.5 years) who had been treated with infrapopliteal angioplasty and stent placement for 191 lesions...

Balloon expandable stents can be used to treat coronary stenosis. During stent implantation, X-ray imaging is used. In order to assist the doctors, it was decided to improve the cardiovascular stents’ X-ray absorption ability by placing a unique marker in the stent strut. Tantalum powder, with 98% purity and 3-10 μm grains diameter, was used as the stent integrated marker. The stents were laser...

Shape Memory Alloys (SMA) have the unique capability to recover the original shape, once mechanically deformed, through mechanical unloading, Superelastic Effect (SE), or through thermal loading, Shape Memory Effect (SME). These peculiar behaviors, coupled with a good material biocompatibility, have stimulated a wide diffusion of SMA in the area of biomedical devices. In this work we numericall...

OBJECTIVE To determine the safety of self expandable metallic stent (SEMS) placement under endoscopic guidance without fluoroscopy. STUDY DESIGN Quasi experimental study. PLACE AND DURATION OF STUDY Section of Gastroenterology and Hepatology, Departments of Medicine, Isra University Hospital and Liaquat University of Medical and Health Sciences (LUMHS), Hyderabad, from April 2006 to March 2...