Pfm Medical Ag

Bernhard Kramann

The invention relates to a snare device for catching an object, in particular for catching objects or foreign bodies in a human or animal body, said snare device comprising a hollow element, in particular a catheter, and a snare made of a flexible elastic shape-memory material, wherein the snare is movable relative to the hollow element and can be pulled into the hollow element and pushed out of it, and wherein the snare has an impressed original shape to which said snare return, when pushed out from the hollow element, as a result of the material stresses caused when it was pulled in, wherein the original shape of the snare has a twisted area, as a result of which a first loop and a second loop are formed, wherein the first loop is arranged substantially parallel to the longitudinal axis of the hollow element, and the second loop is at an angle with respect to the longitudinal axis of the hollow element, and which is characterized in that the snare thus deformed is introduced into the hollow element and is arranged inside the hollow element, in that the second loop is pivoted relative to the first loop and through the first loop, such that the second loop, on emerging from the hollow element, pivots back through the first loop as a result of the load being removed from the shape-memory material, thereby allowing the object to be enclosed.

Snare device for catching an object

The invention relates to a snare device for catching an object, in particular for catching objects or foreign bodies in a human or animal body, comprising a hollow element, in particular a catheter, and a snare of a flexible elastic shape-memory material, wherein the snare can be moved relative to the hollow element and can be pulled into the hollow element and can be pushed out of the hollow element, and wherein the snare has a memorized original shape, to which the snare returns, when the snare is pushed out of the hollow element, by means of the material stresses caused when the snare is pulled in, and the hollow element has an outlet opening, which is arranged laterally on the hollow element and which is set back from the distal end of the hollow element and through which the snare can be pushed out of the hollow element and can be pulled into the hollow element.

A stent for positioning in a body lumen having a cylindrical shape extending along a longitudinal axis surrounded by a stent wall which defines a diameter of an axial passage communicating with openings on two opposite ends of the stent. The wall is configured so as to be elastic under tension whereupon an exertion of a tensile force acting on one of the ends of the stent in a longitudinal direction decreases the diameter of the stent, such that the stent may be removed.

Growing community of inventors

Homburg/Saar, Germany

Bernhard Kramann