View clinical trials related to Constriction, Pathologic.
Filter by:The purpose of this clinical study is to evaluate the effectiveness and safety of the transcatheter aortic valve system in the treatment of patients with severe aortic stenosis disease who are at high or prohibitive surgical risk.
This is a prospective, multicenter, randomized controlled clinical investigation aiming to evaluate the safety and effectiveness of non-slip balloon catheter for the treatment of patients with coronary artery stenosis.
The clinical benefits of endovascular treatment in renal artery stenosis remain controversial. This study uses arterial spin labelling MRI and flat-panel detector parenchymal blood volume imaging to observe the change in renal perfusion after endovascular treatment in renal artery stenosis.
The aim of this study is to demonstrate the safety and effectiveness of the Lobster interspinous spacer device for the treatment of Lumbar Spinal Stenosis in comparison to an SSED-based performance goal.
The posterior crossbite is a common type of malocclusion that might affect the normal growth pattern. Early treatment is recommended by rapid maxillary expansion with different appliances. This line of treatment needs a sufficient retention period to decrease the rate of relapse. The low level laser therapy has been used to enhance tissue regeneration. This study aims to compare the effect of rapid maxillary expansion with low level laser versus rapid maxillary expansion in children with posterior cross bite malocclusions.
The study is designed as a multicenter prospective registry study evaluating the efficacy of the self-assembling peptide in the prevention of stricture formation after endoscopic resection as part of standard medical care. No experimental interventions will be performed.
Evaluate the safety and efficacy of the Timing Carotid Stent for the treatment of carotid artery stenosis in patients.
This study is being done to evaluate the safety and efficacy of Percutaneous transhepatic cholangioscopic (PTCS) laser incision as an ancillary therapy to traditional approaches such as balloon dilation and large drain placement for Benign Biliary Strictures (BBS). Narrowing or blockage of the bile ducts (biliary stricture) is a difficult to treat medical condition that leads to life-threatening complications. Treatment usually involves multiple procedures or surgeries spanned over months or years, and in many cases, leads to the need for a life-long tube that drains bile fluid outside of the body and into a bag. PTCS laser incision is a promising new treatment for bile duct strictures. The procedure is performed by an Interventional Radiologist who uses a tiny camera (endoscope) and a laser through a small hole in the skin to open up the blocked or narrowed duct. This allows bile to flow freely where it is supposed to go (without a tube) so that it does not backup up and cause life-threatening problems. Based on early experience from patients who have had this procedure done, it appears to be safe and effective, and may lead to needing fewer procedures over time, with the possibility of living without a tube or drain. The main goal of this study is to confirm the safety and efficacy of PTCS laser incision in a series of patients with benign biliary strictures who would otherwise receive standard treatment with long-term biliary tube drainage.
To determine the safety and efficacy of GIE Medical's ProTractX3™ TTS DCB for the treatment of recurrent benign bowel strictures.
To evaluate the safety and efficacy of the ProTractX3™ DCB for the treatment of benign esophageal strictures.