Active clinical trials for "Constriction, Pathologic"

The purpose of this clinical investigation is to characterize the safety of the next-generation FlexNav™ Delivery System for transfemoral implantation of the Portico™ Transcatheter Aortic Heart Valve in symptomatic severe aortic stenosis patients who are considered of high or extreme risk for surgical aortic valve replacement. Data from the study will be used to support CE Mark of the FlexNav™ Delivery System and Loading System in Europe.

Clinical study on safety and efficacy of ZENFlow™ drug-eluting PTA balloon dilatation catheter in the treatment of iliac, femoral and popliteal artery stenosis or occlusion

Cerebral circulation time in patients with severe carotid artery stenosis was found to be associated with hyperperfusion syndrome. Remote ischemic preconditioning can change the ability of cerebral autoregulation. The prospective, randomized controlled, blind outcome evaluation, multi-center study aimed to investigate the effect of remote ischemic preconditioning on cerebral circulation time in patients with severe carotid artery stenosis.

Nocturnal calf cramps is a common complaint in patients with lumbar spinal stenosis. The purpose of this study is to evaluate the effect of baclofen in lumbar spinal stenosis patients receiving conservative therapy. We will compare pain score, insomnia severity, functional ability and patient satisfaction between control (conservative management for spinal stenosis) and baclofen group (conservative management for spinal stenosis plus baclofen treatment).

TLIF is a popular lumbar fusion technique to perform interbody fusion. Pedicle screws providing initial stability have been developed to correct deformity, improve the rate of fusion and speed patient's postoperative recovery. Conventionally, bilateral pedicle screw fixation is a standard approach. Recently, studies have revealed that unilateral pedicle screw fixation provides equivalent clinical outcomes and fusion rates as compared with bilateral pedicle screw fixation in lumbar fusion. Meanwhile, the unilateral approach can reduce intraoperative blood loss and operating time. To our knowledge, few randomized controlled studies comparing unilateral versus bilateral instrumented TLIF in lumbar degenerative diseases have been reported. The purpose of this study is to compare clinical and radiographic outcomes in a series of patients with lumbar foraminal stenosis using instrumented TLIF with unilateral or bilateral pedicle screw fixation.

The purpose of this research is to compare two different approaches for treating patients with lumbar spinal stenosis: electric dry needling and thrust manipulation versus impairment-based manual therapy, stretching, strengthening and electrothermal modalities. Physical therapists commonly use all of these techniques to treat lumbar spinal stenosis. This study is attempting to find out if one treatment strategy is more effective than the other.

EUS - guided choledocho-duodenostomy (ECDS) is an established option for bile duct drainage in unresectable malignant distal CBD strictures when endoscopic retrograde cholangiopancreatography (ERCP) fails. However, how primary ECDS compares with ERCP with covered self-expanding metallic stents (CSEMS) in unresectable malignant distal CBD strictures is uncertain. The aim of the current study is to compare primary ECDS versus ERCP with CSEMS in unresectable malignant distal CBD strictures. We hypothesis that ECDS is associated with a higher 1-year stent patency rate.

This study aims to assess the device success and the safety of Medinol's Drug Eluting Stent - BioNIR - with a modified delivery system. The BioNIR Ridaforolimus Eluting Coronary Stent System is a single use device/drug combination product comprising: A mounted Cobalt Chromium (CoCr) alloy based stent A Rapid Exchange (RX) delivery system A polymer matrix coating - Poly n-butyl methacrylate (PBMA) and CarboSil® Ridaforolimus drug - CAS Registry Number: 572924-54-0 It is indicated for improving coronary luminal diameter in patients with symptomatic heart disease due to lesions in vessels with reference diameters of 2.5 mm to 4.25 mm, including complex lesions.

This study is to compare the clinical outcome between the biportal endoscopic decompression and the unilateral approach bilateral decompression in spinal stenosis

This is a prospective, non-randomized, open label, multi-center study including 60 patients with symptomatic ischemic heart disease with 70%-100% coronary artery stenoses and occlusions enrolled and treated in this investigational device study.