View clinical trials related to Constriction, Pathologic.
Filter by:The purpose of this of this study is to compare the use of Self Expanding Metal Stents (SEMS) to plastic stents for the treatment of benign biliary strictures secondary to chronic pancreatitis as it pertains to stricture resolution rates, complication rates and number of endoscopic retrograde cholangiopancreatography (ERCP) procedures during 24 months. Statistical testing will be performed to determine if the rate of stricture resolution for the metal stent is non-inferior to the plastic stent group.
The purpose of the study is to evaluate the safety and efficacy of the Medtronic CoreValve® System in the treatment of symptomatic severe aortic stenosis in subjects who have a predicted very high risk and high risk for aortic valve surgery.
This study investigates the effective power of angina pectoris after Quick-Acting Heart Reliever and isosorbide dinitrate interventing respectively the patients with moderate coronary stenosis for six months. At the same time, the studying will assess the plaque, myocardial blood-supplying,quality of life and observe the end point of the heart (including the myocardial revascularization, death and myocardial infarction). The purpose is to study the function of the blood-quickening stasis-transforming formula Quick-Acting Heart Reliever for moderate coronary stenosis lesions.
Paclitaxel covered metal biliary stent extents their patency rate comparing to the Common Covered Metallic Biliary Stent.
The purpose of this study is to assess the safety and effectiveness of the SJM Portico Transcatheter Heart Valve and the SJM TAVI Transfemoral Transcatheter delivery system in subjects with severe symptomatic aortic stenosis (AS).
The purpose of this first-in-human study is to assess the technical feasibility, deployment characteristics, and safety of the 23mm SJM Transfemoral Transcatheter Heart Valve and delivery system in subjects with severe symptomatic aortic stenosis (AS). This is a single center, prospective, non-randomized, first-in-human investigational study without concurrent or matched controls.
Controversy exists regarding the optimal management of acute traumatic cervical spinal cord injury (SCI), especially those without bone injury. Although surgical decompression is often performed in SCI patients with cervical canal stenosis, efficacy and timing of surgery continues to be a subject of intense debate. In this randomized controlled trial, the investigators compare two strategies: early surgery within 24 hours after admission and delayed surgery following at least 2 weeks of conservative treatment. The purpose of this study is to examine whether early surgery would result in greater improvement in motor function as compared with delayed surgery.
self-expandable metal stents for palliation of malignant biliary strictures
The purpose of the study was to analyze the resolution rate of benign biliary strictures due to chronic pancreatitis after temporary insertion of unflared-ends and flared-ends fully covered self-expandable metal stents.
Lumbar spinal stenosis (LSS), is a common disorder of narrowing of the spinal canal in the lower part of the back. This causes discomfort in the legs when standing or walking because of pressure on the spinal nerves.There are several treatment options for LSS including physiotherapy, lumbar surgical decompression procedures such as laminectomy, Foraminotomy, Discectomy and more recently devices for interspinous distraction such as the XSTOP® and from May 2011 Minuteman™. Surgical decompression for LSS involves the removal of excess bone, ligament, and soft-tissue allowing more room for the nerves. The operation is usually preformed under general anaesthetic and with an average stay in hospital for 2-3 nights. Whereas the Minuteman™ implant is preformed as a day case under local or general anaesthetic and involves implanting the device into the space between two back bones to relieve pressure on the nerves and, therefore, pain in the legs. This is a multi centred (four sites) randomised controlled trial with a total sample of 50 participants after obtaining their informed consent. Participants will attend the pain clinic at the Hospitals for a baseline visit where they will be randomised with a ratio of 1:1 to receive either the Minuteman™ Interspinous interlaminar fusion Implant or standard surgical decompression for the treatment of lumbar spinal stenosis (LSS). Following randomisation arrangements will be made for the participant to receive the randomised treatment. If allocated to Minuteman™ Implant, the treatment will be conducted by the Pain Specialist identified at the site. If allocated to surgical decompression, the treatment will be conducted by the neuro/spinal-surgeon identified at the site. Participates will be followed up regularly for 60 months post implant to assess clinical efficacy, safety, participants function and quality of life of each treatment.