Dual-purpose catheter system

A dual-purpose catheter system for atheroembolic stroke prevention in periprocedure Trans Catheter Aortic Valve replacement (TAVR) or Trans Catheter Mitral Valve Replacement (TMVR) in a patient by preventing atheroembolic debris (embolic plaque) from reaching the patient's brain and for contrast injection and filter immobilization/stabilization, comprising:

• a delivery catheter and an angled 5 F single-lumen dedicated pigtail catheter;
• (a) the delivery catheter being retractable and 7 French in size and approximately 100 cm long, having a front end adapted to be placed in the aortic arch of the patient and a rear end adapted to hang outside the patient's body when inserted in a patient, and having two sections:
• a single-lumen Section A that is approximately 12 cm of the front end of said delivery catheter and a two-lumen Section B that is the rest of the delivery catheter;
• wherein said two lumens of Section B are a mother lumen that is continuous with the single lumen of Section A and a daughter lumen, which is a 0.018″ lumen embedded within the mother lumen along a plane traversing the entire length of Section B;
• a rectangular cerebrovascular filter, in a folded, undeployed position inside the single lumen of Section A when the delivery catheter is not retracted or in a unfolded, deployed position when the delivery catheter is retracted, with a strong tensile memory for an outward convexity so as to hug the inner surface of the greater curvature of the aortic arch of the patient;
• wherein the filter is a thin collapsible mesh 2 to 4 cm wide and approximately 12 cm long, firmly attached to a firm but flexible 0.018″ wire housed in the 0.018″ daughter lumen, running along the entire length of the daughter lumen of Section B and the single lumen of Section A;
• said 0.018″ wire is approximately 120 cm in length with the front 12 cm in the single lumen of Section A attached firmly to the dorsum of the filter;
• a removable and reinsertable 0.035″ J wire placed in the mother lumen of section B and the single lumen of section A of the delivery catheter;
• wherein said J wire runs along the entire length of said delivery catheter;
• wherein said 0.035″ J wire is a moderately stiff approximately 260 cm long wire loosely embedded in the single lumen of section A and the mother lumen of section B of the delivery catheter;
• wherein approximately 30 cm of the 0.035″ J wire juts beyond the front end of the delivery catheter and a portion of the 0.035″ J wire hangs outside the back of the delivery catheter;
• (b) an angled 5 F single-lumen dedicated pigtail catheter having side holes featuring composite construction adapted to be inserted into the rear end of the delivery catheter and be housed within the single lumen of Section A and the mother lumen of Section B when the filter is in the deployed position;
• wherein the delivery catheter is retractable by about 12 cm in the front end, in the retracted position the filter deploys and the angled 5 F pigtail catheter is allowed to be introduced from the rear end of the delivery catheter into the lumen of the mother lumen of section B and the single lumen of section A of the delivery catheter after filter deployment, so as to be advanced over the 0.035″ wire;
• which is removable and re-insertable;
• wherein the front most about 6 cm of the delivery catheter has inbuilt recoil;
• wherein said 0.035″ J wire is an introducer and is the wire on which the delivery Catheter is railed into the body for filter and pigtail catheter delivery.