US 12,102,777 B1
Devices and methods for transvascular drainage of fluids in an intracranial extravascular space
Luis E. Savastano, Hillsborough, CA (US); and Yang Liu, Shanghai (CN)
Assigned to Mayo Foundation for Medical Education and Research, Rochester, MN (US)
Filed by Mayo Foundation for Medical Education and Research, Rochester, MN (US)
Filed on Sep. 18, 2023, as Appl. No. 18/469,437.
Application 18/469,437 is a continuation of application No. 17/976,667, filed on Oct. 28, 2022, abandoned.
Application 17/976,667 is a continuation of application No. PCT/US2021/029276, filed on Apr. 27, 2021.
Claims priority of provisional application 63/016,613, filed on Apr. 28, 2020.
Int. Cl. A61M 25/00 (2006.01); A61M 27/00 (2006.01)
CPC A61M 25/0082 (2013.01) [A61M 27/00 (2013.01); A61M 2210/0693 (2013.01)] 32 Claims
OG exemplary drawing
 
1. A method for drainage of a subdural hematoma disposed within an intracranial extravascular space of a patient, the method comprising:
advancing a suction catheter within a vasculature of the patient until a distal end of the suction catheter is disposed within an intracranial vessel of the patient, the suction catheter defining a lumen;
advancing a perforating element through at least a portion of the lumen of the suction catheter such that a distal end of the perforating element is disposed in the intracranial vessel;
obliquely opening a wall of the intracranial vessel and dura using the perforating element extending substantially parallel to the intracranial vessel to create a transvascular passageway into the intracranial extravascular space;
advancing the perforating element within the intracranial extravascular space to the subdural hematoma;
advancing the suction catheter substantially parallel to the dura and over the perforating element more than 1 cm within the intracranial extravascular space to the subdural hematoma; and
draining fluid or matter from the subdural hematoma via the suction catheter.