Abstract: A delivery system is equipped with a self expanding stent for implantation into a blood vessel, in particular in the region of the aortic arch. The stent has a hollow cylindrical body which is radially compressed for implantation. A pull-back sheath which surrounds the stent and which radially compresses it is also provided for positioning and releasing the stent in the blood vessel. The pull-back sheath has a highly flexible front section which surrounds the stent and which maintains said stent in its compressed state, and has further a more rigid rear section which is connected to the front section and which is designed to transmit torsional and traction forces to the front section.

Abstract: The invention relates to a filter element (1) comprising a drainage element (2) which is arranged between two filter membranes (3). According to the invention, said drainage element (2) is made of a non-woven filtering material which is arranged in a laminated manner between the filter membranes (3) respectively by means of an adhesive non-woven material (4). The invention also relates to a method for producing a filter element (1), a drainage element (2) made from a non-woven filtering material being laminated between two filter membranes (3). An adhesive non-woven material (4) is arranged between the drainage element (2) and each filter membrane (3), then lamination takes place due to the thermal effect under pressure.

Abstract: The invention relates to a filter element (1) comprising a drainage element (2) which is arranged between two filter membranes (3). According to the invention, said drainage element (2) is made of a non-woven filtering material which is arranged in a laminated manner between the filter membranes (3) respectively by means of an adhesive non-woven material (4). The invention also relates to a method for producing a filter element (1), a drainage element (2) made from a non-woven filtering material being laminated between two filter membranes (3). An adhesive non-woven material (4) is arranged between the drainage element (2) and each filter membrane (3), then lamination takes place due to the thermal effect under pressure.

Abstract: A delivery system is equipped with a self expanding stent for implantation into a blood vessel, in particular in the region of the aortic arch. The stent has a hollow cylindrical body which is radially compressed for implantation. A pull-back sheath which surrounds the stent and which radially compresses it is also provided for positioning and releasing the stent in the blood vessel. The pull-back sheath has a highly flexible front section which surrounds the stent and which maintains said stent in its compressed state, and has further a more rigid rear section which is connected to the front section and which is designed to transmit torsional and traction forces to the front section.