Vasoocclusion coil device having a core therein

A vasoocclusion device (10) for establishing an embolus or vascular occlusion in a human or veterinary patient, the device (10) being adapted for introduction into the patient via a catheter (32), and the catheter (32) having a pusher (34) contained therein for deploying the device (10) from the catheter (32);

• the device (10) comprising:
• a coil (12) having a proximal coil end (16), a distal coil end (18) spaced from the proximal coil end (16) and a coil lumen (20) defined therein extending between the proximal coil end (16) and the distal coil end (18);
• a core (22) disposed in at least part of the coil lumen (20), the core (22) having a proximal core end (24) and a distal core end (26);
• and
• a thrombogenic material (38) connected to or carried by the coil (12);
• wherein one and only one of the proximal core end (24) and the distal core end (26) is directly affixed to a respective one of the proximal coil end (16) and the distal coil end (18), the other of the distal core end (26) and the proximal core end (24) not being directly affixed to either the distal coil end (18) or the proximal coil end (16);
• wherein the distal core end (26) is directly affixed to the distal coil end (18) by solder (28) or an adhesive;
• wherein the core (22) comprises nitinol in a superelastic state, being in other than its stress induced, martensitic condition;
• wherein the thrombogenic material (38) comprises Dacron, cotton, silk, wool or polyester threads (44);
• wherein the coil (12) comprises a wire (14) having a diameter of about 0.010 in. to about 0.032 in. (about 0.25 mm to about 0.81 mm);
• wherein the core (22) has a diameter of about 0.004 in. to about 0.015 in. (about 0.10 mm to about 0.38 mm);
• wherein the coil (12) is about 2 to about 40 cm long when constrained within a catheter;
• and
• wherein the core (22) provides the coil (12) with an additional force assisting anchoring of the coil (12) in the human or veterinary patient when the coil (12) and the core (22) are deployed from the catheter (32).

A medical device (40) for establishing an embolus or vascular occlusion in a vessel of a human or veterinary patient, comprising:

• a coil (12) having a proximal coil end (16), a distal coil end (18) spaced from the proximal coil end (16) and a coil lumen (20) defined therein extending between the proximal coil end (16) and the distal coil end (18);
• a core (22) disposed in at least part of the coil lumen (20), the core (22) having a proximal core end (24) and a distal core end (26);
• one portion of the core (22) affixed to the coil (12) at a selected location,
• a catheter (32) dimensioned to receive the coil (12) and the core (22) therein;
• and
• a pusher (34) contained in the catheter (32), adapted to deploy the coil (12) and the core (22) from the catheter (32);
• wherein the core (22) provides the coil (12) with an anchoring force in the vessel when the coil (12) and the core (22) are deployed from the catheter (32).