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Method and apparatus for treatment of intracranial hemorrhages

  • US 9,044,568 B2
  • Filed: 06/20/2008
  • Issued: 06/02/2015
  • Est. Priority Date: 06/22/2007
  • Status: Active Grant
First Claim
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1. A method for treating an extravascular blood clot in a patient resulting from an intracranial hemorrhage comprising:

  • forming a hole in the patient'"'"'s skullextravascularly positioning at least a portion of a treatment region of an elongate tubular body of an ultrasound catheter into the extravascular blood clot by advancing the device through an opening provided in a skull of the patient;

    wherein the elongate tubular body further has a distal portion and a proximal portion, and wherein the ultrasound catheter further comprises;

    a plurality of ultrasound radiating members positioned within the treatment region of the elongate tubular body, the treatment region being positioned within the distal portion of the elongate tubular body;

    a first fluid delivery lumen formed within the elongate tubular body, wherein the first fluid delivery lumen extends from the proximal portion of the elongate tubular body to the treatment region and includes a first fluid delivery port located on a first axial region of the treatment region of the elongate tubular body, the first fluid delivery port extending from an exterior surface of the elongate tubular body and configured to allow a fluid to flow from within the first fluid delivery lumen to a portion of the blood clot positioned outside the elongate tubular body;

    a first fluid evacuation lumen formed within the elongate tubular body, wherein the first fluid evacuation lumen extends from the proximal portion of the elongate tubular body to the treatment region and includes a first fluid evacuation port located on a second axial region of the treatment region of the elongate tubular body, the first fluid evacuation lumen extending from an exterior surface of the elongate tubular body and configured to allow a fluid to flow into the first fluid evacuation lumen from a position outside the elongate tubular body, the first and second axial regions being positioned at distinct longitudinal positions on the elongate body, and;

    wherein at least one of the plurality of ultrasound radiating members are located axially between the first fluid delivery port and the first fluid evacuation port;

    activating the ultrasound assembly;

    delivering a lytic drug to the blood clot through the first fluid delivery lumen; and

    evacuating a at least a portion of the extravascular blood clot around the distal portion of the elongate tubular body into the first fluid evacuation lumen.

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