Abstract: A combined rolling membrane-balloon catheter, in particular for expanding stenoses in bodily vessels, including: an outer shaft (1) and an inner shaft (4) which is axially displaceable therein, an intermediate shaft (7) situated between the inner and outer shafts (4, 1) which is likewise axially displaceable, a rolling membrane (12) which is attached in a pressure-tight manner between the distal end (2) of the outer shaft (1) and the distal end (11) of the inner shaft (4), and which may be displaced between a passive position within the outer shaft (1) and an active position which is distally expanded from the outer shaft (1) by the action of pressure, and a dilatable balloon (14) which is attached in a pressure-tight manner between the distal end (11) of the inner shaft (4) and the distal end of the intermediate shaft (7), and which may be displaced between a passive position within the outer shaft (1) and proximally in front of the rolling membrane (12), and an active position which is distally expanded fro

Abstract: A balloon catheter, including an outer shaft with a distal end and a fluid line, an inner part located distal anterior to its distal end, as well as a balloon that can be inflated under the influence of a fluid that has been pressurized by the fluid line, that is fastened fluid-tight onto the distal end section of the outer shaft with a first fastening zone at its proximal end, and fluid-tight onto inner part with a second fastening zone at its distal end, whereby the balloon, on at least one of its two ends is designed without cone and with essentially unvarying thin wall thickness, the balloon is provided on at least one of its two ends with respectively one twist anterior to its fastening zone, and a second balloon is placed above the first balloon and is also provided with a twist on at least one of its two ends anterior to the fastening zone, that is directed in the opposite direction of the twist of the first balloon end that is positioned underneath.

Abstract: A mechanical transcatheter heart valve prosthesis including a support structure that can be expanded from a first size designed for minimally invasive insertion to a functional second size and a flexible heart valve made of a composite material containing woven fabric that is embedded in an elastic matrix and locally reinforced by fibers, the heart valve comprising a plurality of leaflets.

Abstract: A combined rolling membrane-balloon catheter, in particular for expanding stenoses in bodily vessels, including: an outer shaft (1) and an inner shaft (4) which is axially displaceable therein, an intermediate shaft (7) situated between the inner and outer shafts (4, 1) which is likewise axially displaceable, a rolling membrane (12) which is attached in a pressure-tight manner between the distal end (2) of the outer shaft (1) and the distal end (11) of the inner shaft (4), and which may be displaced between a passive position within the outer shaft (1) and an active position which is distally expanded from the outer shaft (1) by the action of pressure, and a dilatable balloon (14) which is attached in a pressure-tight manner between the distal end (11) of the inner shaft (4) and the distal end of the intermediate shaft (7), and which may be displaced between a passive position within the outer shaft (1) and proximally in front of the rolling membrane (12), and an active position which is distally expanded fro

Abstract: A balloon catheter, including an outer shaft with a distal end and a fluid line, an inner part located distal anterior to its distal end, as well as a balloon that can be inflated under the influence of a fluid that has been pressurized by the fluid line, that is fastened fluid-tight onto the distal end section of the outer shaft with a first fastening zone at its proximal end, and fluid-tight onto inner part with a second fastening zone at its distal end, whereby the balloon, on at least one of its two ends is designed without cone and with essentially unvarying thin wall thickness, the balloon is provided on at least one of its two ends with respectively one twist anterior to its fastening zone, and a second balloon is placed above the first balloon and is also provided with a twist on at least one of its two ends anterior to the fastening zone, that is directed in the opposite direction of the twist of the first balloon end that is positioned underneath.

Abstract: A balloon catheter with a shaft having a balloon located proximate a distal end thereof, with the shaft having a lumen through which a balloon is supplied and a lumen through which a guide wire is passed. The shaft consists of a proximal area and a distal area, with the shaft being made of a stiffer material in the proximal shaft area than in the distal shaft area. In one embodiment of the proximal shaft area, the supply lumen and the guide lumen are coaxially disposed. In one embodiment of the distal shaft area, the supply lumen and the guide lumen are biaxially disposed. An /utlet opening for the guide wire is disposed in the shaft in the proximal area of the catheter wherein a guide wire passing through the opening can be advanced into the guide lumen and towards the balloon for passage through the distal end.

Abstract: A catheter system for mechanical dilatation of coronary arterial stenoses includes a balloon dilatation catheter, a guide wire and a guide catheter. The balloon dilatation catheter has, for the perfusion of vessel fluid during dilatation, side openings arranged both distal and proximal of the balloon and connected to one another via a lumen extending within the balloon. The internal lumen configuration of the balloon dilatation catheter permits the catheter system to be utilized as either a "monorail"-type or an "over-the-wire" system.

Abstract: The dilatation catheter has a shaft which consists of two separately produced shaft portions. Both portions have a first lumen for a guide wire and a second lumen for a pressure liquid. The two portions overlap at a connection point and are preferably welded to one another at this point. The proximal portion consists of two coaxial tube portions and the distal portion consists of an extruded two-lumen tube piece. The proximal portion is stiffer than the distal portion, which permits an optimal adaptation to a non-straight course of a blood vessel. The dilatation catheter according to the invention is particularly suitable for the treatment of arterial occlusions, which are situated in or downstream of a vessel curve.