35 results about "Meatal stenosis" patented technology

An expandable and retrievable device for treatment of a stenotic lesion in a body vessel is disclosed. The device comprises a tubular portion including a proximal end and a distal end extending from the proximal end. The tubular portion has a lumen formed therethrough between the proximal and distal ends. The device further comprises an expandable member formed helically about the tubular portion. The expandable member is configured to helically close, defining a collapsed state for delivery of the device. The expandable member is configured to helically open, defining an expanded state for treatment of the stenotic lesion in the body vessel. The expandable member has at least one filter portion that helically extends from the tubular portion at a predetermined angle. This defines a proximally faced opening when the expandable member is in the expanded state.

An embolic protection device for capturing emboli during treatment of a stenotic lesion in a body vessel is provided. The device includes an inflatable frame having a deployed state and an undeployed state and a filter attached to the inflatable frame for capturing emboli. The inflatable frame includes a distal portion having a predetermined shape and extending freely to a closed distal end when the inflatable frame is in the deployed state. The filter includes a lip attached to the inflatable frame to define an open end of the filter when the inflatable frame is in the deployed state, a body extending from the lip and disposed about the inflatable frame, and a closed tail configured to capture the emboli during treatment of the stenotic lesion.

A catheter deliverable stent / graft especially designed to be used in a minimally invasive surgical procedure for treating a variety of vascular conditions such as aneurysms, stenotic lesions and saphenous vein grafts, comprises an innermost tubular structure and at least one further tubular member in coaxial arrangement. In one embodiment, the innermost tubular structure is of a length (L 1 ) and is formed by braiding a relatively few strands of highly elastic metallic alloy. The pick and pitch of the braid are such as to provide relative large fenestrations in the tubular wall that permit blood flow through the wall and provide the primary radial support structure. A portion of the innermost tubular structure of a length (L 1 ) is surrounded by a further braided tubular structure having relatively many strands that substantially inhibit blood flow through the fenestrations of the innermost tubular structure.

A system for enabling the insertion and removal of an embolic protection device, for capturing and retaining embolic debris which may be created during the performance of a therapeutic interventional procedure in a stenosed or occluded region of a blood vessel. The system, in an embodiment thereof, enables the device to be compressed for insertion thereof through a patient's vasculature so as to cross the stenosis in a low profile, and to enable release of compression thereof for expansion and deployment of the device at a location distal to the interventional procedure site.

A method and device to repair a stenosis in a blood vessel is provided. The medical device has a tubular member and a frame. The frame may be expanded or contracted while maintaining its generally cylindrical configuration. The medical device is retained in a contracted state inside an introducer sheath. The introducer sheath is guided through the stenosis such that a first end of the medical device is located distal the stenosis. The introducer sheath is retracted relative to the medical device, such that the first end of the stent expands to engage the blood vessel distal the stenosis. A mid-portion of the medical device engages the plaque of the stenosis trapping any emboli against the wall of the vessel. The second end expands to engage the blood vessel proximal to stenosis.

Embodiments of the present invention provide a method for treatment of nonvascular body lumen strictures such as benign prostatic hyperplasia (BPH), urethral strictures, ureteral strictures, prostate cancer, esophageal strictures, sinus strictures, biliary tract strictures, asthma and chronic obstructive pulmonary disease (COPD). The method involves delivering, preferably via drug coated balloon catheters, of anti-inflammatory and anti-proliferative drugs (rapamycin or paclitaxel and their analogues) and one or more additives.

A filtering device for capturing and removing embolic debris from a body vessel and a system for insertion and removal of the filtering device to facilitate an interventional procedure in a stenosed or occluded region of a body vessel. The filtering device is adapted to be expandable in the body vessel, allowing blood to pass therethrough while maintaining apposition with the body vessel wall and capturing embolic material released into the bloodstream during the interventional procedure, and to be collapsible to remove the captured embolic material from the body vessel. The filtering device includes a guidewire, an expandable cage assembly secured to the guide wire, filter material secured to the expandable cage assembly, and at least one hinge, the hinge allowing the expandable cage assembly to bend independent from the guide wire. The system, which includes a delivery sheath and filtering device, is adapted to retain the expandable cage assembly in a collapsed condition and deliver and deploy the filtering device at a location in the body vessel distal the treatment site.

The invention discloses a cardiovascular intervention catheter device. The cardiovascular intervention catheter device comprises a catheter head, a catheter middle part and a control device and is characterized in that the catheter head comprises a liquid guide device, puncture devices and diverters, the catheter middle part is provided with an air bag, a controller controls the puncture devices and the diverters through steel wires, the air bag is inflated through a pushing device arranged in the controller, and the liquid guide device conveys liquid through a liquid pushing device arranged in the controller. The cardiovascular intervention catheter device has the advantages that the cardiovascular intervention catheter is used as the intravascular stent, thrombolysis liquid drugs are released through the liquid guide device, the catheter can easily pass the narrow parts of blood vessels, the puncture devices can help puncture thrombolysis cells to allow the liquid drugs to fast seepto thrombi, the pushing device can precisely control the speed of the catheter entering the body of a patient, and blood in blood vessels can normally flow when the spiral air bag is in an open state.

The invention discloses a preparation method of a super-hydrophobic blood vessel stent for repairing angiorrhexis, relating to a preparation method of a blood vessel stent. The method comprises the following steps of: degreasing a pipe-net-shaped blood vessel stent and drying after alkali washing and water washing; placing into a perfluoroalkyl siloxane solution to soak to obtain a super-hydrophobic pipe-net-shaped blood vessel stent; soaking into a drug eluting solution, and drying in vacuum to obtain the super-hydrophobic blood vessel stent. The invention realizes minimal invasion for simultaneously repairing angiorrhexis and treating diseases such as angiostenosis and the like for the first time. The surface of the super-hydrophobic blood vessel stent for repairing angiorrhexis, prepared with the method provided by the invention, is coated with hemostatics, blood cannot exude through the vessel wall at the treatment stage of an angiorrhexis part; after the treatment on the angiorrhexis part is finished, the stent allows blood to freely pass under the excitation of external factors to supply blood to vessels around the stent, not only can realize minimally invasive treatment on angiorrhexis, without influencing blood supply to the surrounding vessels, but also can finish treatment on angiostenosis diseases such as the coronary atherosclerotic heart disease and the like.