Neurosurgical devices and associated systems and methods

A neurosurgical catheter, comprising:

• a body at least partially defining a lumen;
• a surface disrupter extended or extendable from a distal end of the lumen;
• and
• an elongated macerator positioned with the lumen and rotatable around an axis substantially collinear with a length of the body.

A neurosurgical catheter, comprising:

• a body at least partially defining a lumen;
• a lateral opening extending through a wall of the body and into the lumen at a distal portion of the neurosurgical catheter;
• and
• a surface disrupter movable within the lumen along a length of the neurosurgical catheter such that at least a portion of the surface disrupter slides through the lumen proximate the lateral opening.

A neurosurgical catheter, comprising:

• a body at least partially defining a lumen with a distal opening;
• and
• a suction conduit within the lumen, the suction conduit having a main portion and a plug, the plug at least partially defining a plug chamber with a distal opening and a proximal opening into the plug chamber,
• wherein the plug is rotatable between (a) a first position in which the distal opening of the body and the distal opening into the plug chamber are substantially aligned and the proximal opening into the plug chamber and the distal opening of the main portion of the suction conduit are not substantially aligned and (b) a second position in which the distal opening of the body and the distal opening into the plug chamber are not substantially aligned and the proximal opening into the plug chamber and the distal opening of the main portion of the suction conduit are substantially aligned.

A neurosurgical method, comprising:

• advancing a cannula having a main portion and an angle-forming member through brain tissue along a first portion of a path to a target area, the main portion being substantially straight, the angle-forming member having a first configuration in which the angle-forming member is substantially straight and a second configuration in which a lumen of the angle-forming member is curved, wherein the first portion of the path is substantially straight, and the angle-forming member is in the first configuration while the cannula is advanced along the first portion of the path;
• actuating the angle-forming member to cause the angle-forming member to change from the first configuration to the second configuration after advancing the cannula along the first portion of the path;
• and
• advancing a catheter through the cannula after actuating the angle-forming member such that the catheter extends through a curve of the lumen of the angle-forming member in the second configuration.