Abstract: A high-pressure-tight slide bearing device for minimally-invasive instruments comprises an inner shaft part (2), an outer part (3) which is seated thereon and is displaceable relative thereto, and a slippable seal (5) in a gap (4) between shaft part and outer part (2, 3), wherein the seal (5) consists of swellable, hydrophilic material which can be activated by the influence of a fluid in such a manner that due to the activation, the gap (4) is pressure-tight closed while, at the same time, sliding properties between shaft part and outer part (2, 3) are provided.

Abstract: A balloon catheter, in particular for delivering medicaments, stents or medicament-coated stents in the region of a stenosis, comprising an outer shaft (4) an inner shaft (6), and a balloon (7) at the distal catheter end, which balloon is dilatable by a feedable pressure fluid and which is attached with its proximal end (8) to the outer shaft (4) and with its distal end (9) to the inner shaft (6) which protrudes the outer shaft (4) in the distal direction, and a cover sheath (15) which is seated in a covering position over the contracted balloon (7) and is displaceably guided on the outer shaft (4) and which is displaceable on the outer shaft (4) in the proximal direction via its front opening (17) by the dilating balloon (7) while continuously releasing the same from distal to proximal.

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: The invention relates to a drug-coated balloon catheter and to a method for producing the same. The balloon of the catheter includes (i) a main membrane, and (ii) an asymmetrical polymer membrane which is applied to an outside of the main membrane and into which at least one pharmaceutical active ingredient is introduced.

Abstract: A balloon catheter comprises an outer shaft having a distal end, an inner shaft situated therein to form an annular fluid line and projecting beyond the distal end of the outer shaft, and a balloon which is dilatable under the influence of a fluid introduced through the fluid line under pressure. At its proximal end the balloon is attached in a fluid-tight manner to the distal end region of the outer shaft at a first attachment zone, and at its distal end is attached in a fluid-tight manner to the distal end region of the inner shaft at a second attachment zone. Between the attachment zones, in the undilated state the balloon is placed in longitudinal folds along its length. The balloon, at least at its distal end, has an untapered design with a thin wall thickness (d) which is essentially unchanged over the length of the balloon, and the longitudinal folds extend into the attachment zone at that location.

Abstract: A catheter having a balloon (10) which has at least one wing (12) in the undilated state, the balloon having at least one fold element (11, 11?, 31, 32, 41, 42) running essentially in the longitudinal direction for each wing (12), such that in folding the balloon (10), the fold element is arranged in an area of the wing (12) with a minimum in the bending radius, said area running in the longitudinal direction. Also disclosed is a system for introducing an intraluminal endoprosthesis, preferably a stent, into a body cavity consisting of an intraluminal endoprosthesis and a catheter having the balloon as described. Further, disclosed are methods of producing such a catheter and such a system.

Abstract: A multi-membrane balloon (10) for a catheter having an at least double membrane sleeve (20, 40) comprising at least one fillable and emptiable expansion space (46) between a proximal end (12) and a distal end (14), wherein a stiff supporting element (60) surrounds the at least double membrane sleeve (20, 40) and the outer membrane sleeve (20) surrounds one or more inner membrane sleeves (40). The supporting element (60) at least partially takes hold with the outer membrane sleeve (20).