摘要:
The application relates to a method for producing a catheter (1) with a proximal portion, a distal portion, and an expandable element (2) arranged in the distal portion, wherein the expandable element (2) can be brought from a contracted state into an expanded state by the delivery of a fluid, and a removable protective device in the form of a tube (5) is arranged around the expandable element (2) in the contracted state, and wherein the tube (5) is turned back over the expandable element (2) and is guided with the catheter (1) through one or more nozzles (6), wherein the tube (5) is stretched and the internal diameter of the tube (5) decreases. The application further relates to a corresponding catheter (1) with a tube (5) pulled over the expandable element (2). The application permits the provision of a catheter (1) which is characterized by a particularly small cross section in the area of the distal portion.
摘要:
Die Erfindung betrifft ein Verfahren zur Beschichtung des Ballons eines Ballonkatheters, wobei die Oberfläche des Ballons zumindest teilweise mit einer ersten Lösung eines Wirkstoffs benetzt wird, der mit der ersten Lösung des Wirkstoffs benetzte Teil der Oberfläche des Ballons mit einer Wasser und/oder mindestens einen Alkohol enthaltenden Flüssigkeit benetzt wird und der mit der ersten Lösung und der Wasser und/oder mindestens einen Alkohol enthaltenden Flüssigkeit benetzte Teil der Oberfläche des Ballons mit einer weiteren Lösung benetzt wird, die ein Polysaccharid enthält. Auf diese Weise wird der Ballon mit einer Wirkstoffschicht versehen, die bei der Ballondilatation zum einen aufgrund der Versprödung der Oberfläche effektiv auf die Gefäßinnenwand appliziert wird und zum anderen eine verzögerte, lang anhaltende Wirkstofffreisetzung bewirkt.
摘要:
The invention relates to a method for producing a bioactive surface on the balloon (3) of a balloon catheter (1). According to said method, the surface of the balloon (3) is at least partially wetted with a first solution of an active substance (8) and the section of the surface of the balloon (3) wetted with the first solution of an active substance (8) is then wetted with a second, saturated solution of the active substance (28). The invention further relates to a balloon (3) of a balloon catheter (1) the surface of which is at least partially coated with an active substance (11), the coating (11) being homogeneous and brittle in the entire coated region.
摘要:
The invention relates to a method for coating the balloon of a balloon catheter, wherein the surface of the balloon is at least partially wetted with a first solution of an active ingredient, the part of the surface of the balloon wetted with the first solution of the active ingredient is wetted with a liquid containing water and/or at least one alcohol, and the part of the surface of the balloon wetted with the first solution and the liquid containing water and/or at least one alcohol is wetted with an additional solution that contains a polysaccharide. In this way, the balloon is provided with an active ingredient layer, which during the balloon dilatation is effectively applied to the vessel inner wall due to the embrittlement of the surface and causes a slowed, long lasting release of the active ingredient.
摘要:
The invention relates to an active-substance-containing coating for the balloon of a balloon catheter, to a balloon of a balloon catheter with the coating, and to a balloon catheter with such a balloon. The invention further relates to the use of the coating for a balloon of a balloon catheter, and to a method for coating an active-substance-coated balloon and for producing an agent for modifying the release of an active substance applied to a surface of the balloon of a balloon catheter. A coating for a balloon of a balloon catheter is proposed which comprises at least one lipophilic active substance and an agent for modifying the release of active substance to a vessel that surrounds the balloon, wherein the agent for modifying the release of active substance is a polysaccharide having a molecular mass of 10,000 Da to 100,000,000 Da.
摘要:
The invention relates to a metallic endoprosthesis, which causes no significant artefacts on images taken by magnetic resonance tomography (MRT), as a result of the combination of the production materials with a special design, which permits an evaluation of the externally adjacent region and the lumen of the endoprosthesis by means of MRT. The endoprosthesis is made from a material with a magnetisability similar to human tissue. The design of the endoprosthesis is such that the members or wires of the endoprosthesis run extensively along the longitudinal axis of the endoprosthesis, without forming a closed circuit in a plane which is essentially perpendicular to the endoprosthesis longitudinal axis. Further variations of the endoprosthesis design are possible, which all offer a full compatibility with MR for the endoprosthesis.