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US 6,183,491 B2Granted
Embolic coil deployment system with improved embolic coil
AssigneeCordis Corporation
InventorRobert Lulo
Life of this patent
Estimating the term…
Abstract
A medical device for placing an embolic coil at a preselected location within a vessel comprising a positioning catheter having a distal tip for retaining the embolic coil which when pressurized with a fluid expands outwardly to release the coil at the preselected position and including an embolic coil having a relatively flexible proximal portion which resists stretching.
Claims17
A vaso-occlusive coil deployment system for use in placing a coil at a preselected site within a vessel comprising:
- an elongated flexible catheter having a lumen extending therethrough and having a proximal section and a distal section, said distal section of the catheter being formed of a material having a durometer which exhibits the characteristic that when a fluid pressure is applied to the interior of the catheter the walls of the distal section of the catheter expand outwardly;
- a syringe coupled to the proximal section of the catheter for applying a fluid pressure to the interior of the catheter to thereby cause the distal section of the catheter to expand outwardly;
- and,
- an embolic coil being disposed in fluid-tight engagement within the lumen of the distal section of the catheter, said coil comprising a tightly wound helical coil having a proximal end, a distal end and an embolic coil lumen extending therethrough, a seal plug is disposed in fluid-tight engagement within the embolic coil lumen at the proximal end of the embolic coil, a support wire extends along the central axis of the embolic coil lumen for a length substantially less than the length of the coil, one end of said support wire being fixedly attached to the seal plug and the other end of the support wire being fixedly attached to the embolic coil at a point on an embolic coil lumen wall at a position substantially remote from the distal end of the embolic coil.
1 more element
A vaso-occlusive coil deployment system for use in placing a coil at a preselected site within a vessel comprising:
- an elongated flexible catheter having a lumen extending therethrough and having a proximal section and a distal section, said distal section of the catheter being formed of a material having a durometer which exhibits the characteristic that when a fluid pressure of about 90 to 450 psi applied to the interior of the catheter the walls of the distal section of the catheter expand outwardly;
- a piston coupled to the proximal section of the catheter for applying a fluid pressure to the interior of the catheter to thereby cause the distal section of the catheter to expand outwardly to thereby release the embolic coil;
- and,
- an embolic the embolic coil being disposed in fluid-tight engagement within the lumen of the distal section of the catheter, said coil comprising a tightly wound helical coil having a proximal end, a distal end and an embolic coil lumen extending therethrough, a seal plug is disposed in fluid-tight engagement within the embolic coil lumen at the proximal end of the embolic coil, a support wire extends along the central axis of the embolic coil lumen for a length substantially less than the length of the embolic coil, one end of said support wire being fixedly attached to the seal plug and the other end of the support wire being fixedly attached to the coil at a point on the lumen wall at a position substantially remote from the distal end of the coil.
1 more element
A vaso-occlusive coil deployment system for use in placing a coil at a preselected site within a vessel comprising:
- an elongated flexible catheter having a lumen extending therethrough and having a proximal section and a distal section, said distal section of the catheter being formed of a material having a durometer which exhibits the characteristic that when a fluid pressure of about 90 to 450 psi applied to the interior of the catheter the walls of the distal section of the catheter expand outwardly;
- a fluid pressure generating device coupled to the proximal section of the catheter for applying a fluid pressure to the interior of the catheter to thereby cause the distal section of the catheter to expand outwardly;
- and,
- an embolic coil being disposed in fluid-tight engagement within the lumen of the distal section of the catheter, said coil comprising a tightly wound helical coil having a proximal end, a distal end and an embolic coil lumen extending therethrough, a seal plug is disposed in fluid-tight engagement within the embolic coil lumen at the proximal end of the embolic coil, a support wire extends along the central axis of the embolic coil lumen for a length substantially less than the length of the embolic coil, one end of said support wire being fixedly attached to the seal plug and the other end of the support wire being fixedly attached to the coil at a point on an embolic coil lumen wall at a position substantially remote from the distal end of the embolic coil.
1 more element
Dependencies are inferred from the claim text.