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Therapeutic delivery devices, systems, and methods

  • US 9,028,465 B2
  • Filed: 04/09/2013
  • Issued: 05/12/2015
  • Est. Priority Date: 03/04/2010
  • Status: Active Grant
First Claim
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1. A method for treating thrombosis in a vessel or graft comprising:

  • (a) inserting a coaxial occlusion/infusion catheter system into a subject'"'"'s vessel or graft and advancing the catheter to a position where a distal tip of the catheter system lies distal to a thrombus, the thrombus length corresponding to the infusion zone;

    wherein the coaxial occlusion/infusion catheter system comprises;

    (i) an occlusion catheter component having an occlusion chamber, wherein the occlusion catheter component provides for occlusion of the vessel or graft distal to the infusion zone;

    (ii) an infusion catheter component comprising 1 to 40 pressure responsive slits or side holes and one or more detectable markers for positioning all of said pressure responsive slits or side holes within the thrombus, wherein at least a portion of the occlusion catheter component is coaxially positioned within the infusion catheter component; and

    (iii) an outer sheath component having an occlusion chamber, wherein at least a portion of the infusion catheter is coaxially positioned within the outer sheath component, wherein the sheath component provides for the occlusion of the vessel or graft proximal to the infusion zone;

    wherein a composition comprising plasmin can be administered by infusion into an annular fluid passageway between an outer wall of the occlusion catheter and an inner wall of the infusion catheter, wherein said composition comprising plasmin exits said pressure responsive slits or side holes thereby providing the composition comprising plasmin within the thrombus;

    (b) activating the occlusion chamber of the occlusion catheter prior to the administering step, thereby occluding the vessel or graft distal to the infusion zone, wherein the occlusion chamber of the occlusion catheter is activated by inflation through an inflation lumen that is in contact with the occlusion chamber of the occlusion catheter with a suitable volume of material comprising air, gas, or fluid;

    (c) activating the occlusion chamber of the sheath prior to the administering step thereby occluding the vessel or graft proximal to the infusion zone, wherein the occlusion chamber of the sheath is activated by inflation through an inflation lumen that is in contact with the occlusion chamber of the sheath with a suitable volume of material comprising air, gas, or fluid;

    (d) administering the composition comprising plasmin into the infusion zone; and

    (e) incubating the composition comprising plasmin in the infusion zone, thereby dissolving the thrombus.

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