Apparatus for releasing a self-expanding endoprosthesis

A - Human Necessities – 61 – M

Patent

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Details

A61M 29/00 (2006.01) A61F 2/06 (2006.01)

Patent

CA 2124909

The present invention relates to an apparatus for releasing a self-expanding endoprosthesis, with an elongated and flexible outer catheter with a distal end and a proximal end and with an elongated and flexible inner catheter that is arranged coaxially to the outer catheter, this inner catheter having at its distal end a tip and proximally to this a means to accommodate the endoprosthesis, the outer catheter being slidable in its longitudinal direction over the means to fix the endoprosthesis and retract it over the means in order to release the endoprosthesis. A second outer catheter is arranged coaxially around the outside of the outer catheter such that it can be slid longitudinally on the first outer catheter; so that, with an endoprosthesis installed, the distal end of the second outer catheter extends distally beyond the first outer catheter in such a way that a distal area of the endoprosthesis is pressed against an inner side of the second outer catheter and a proximal area is pressed against the inner side of the first outer catheter. In order to release the endoprosthesis, the second outer catheter and the first outer catheter can be retracted from the endoprosthesis on the inner catheter.

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