Blood filtering device having a catheter with longitudinally variable rigidity

摘要

The invention relates to a blood filtration device which can be implanted in a patient's body and comprises a catheter and a blood filter secured to one end thereof. The catheter has a longitudinally variable rigidity, being stiffer at its end where the filter is secured thereto and more flexible at the opposite end where the catheter can be connected to an implantable chamber adapted for distributing a drug in the patient's body.