Systems and methods for the endovascular treatment of hydrocephalus and elevated intracranial pressure

A delivery system for deployment of an implant, the delivery system comprising:

• a delivery catheter having a proximal opening, a distal opening, and delivery catheter lumen extending therebetween;
• and
• a shroud assembly, the shroud assembly comprising
• an elongate tubular shroud body having open proximal and distal ends;
• an implant retention feature coupled to the proximal end of the shroud body, the implant retention feature having a proximal end and an open distal end;
• and
• a shroud lumen extending through the shroud body from the distal end opening of the shroud body, the proximal end opening of the shroud body, and an interior of the implant retention feature, respectively,
• wherein the delivery catheter lumen is configured to receive the shroud assembly therein and allow passage of the shroud assembly therethrough, and
• wherein the implant retention feature is configured to secure a proximal end portion of an implant in the shroud assembly when the implant is disposed in the shroud lumen and the shroud assembly is disposed in the delivery catheter lumen.

A transfer device for flushing and transferring an implant into a delivery catheter, the implant transfer device comprising:

• an elongate housing;
• an implant transfer lumen extending through the housing from a proximal opening in the housing to a distal opening in the housing;
• a distal luer connector coupled to the distal opening;
• a touhy-borst adapter and stopcock coupled to the proximal opening;
• and
• an annular passive seal disposed within the implant transfer lumen, wherein the annular passive seal comprises a lumen configured to retain an expandable portion of the implant in a compressed configuration, and wherein the distal luer connector, implant transfer lumen, passive seal lumen, touhy-borst adapter and stopcock are in fluid communication.

An assembly for verifying patency of a shunt implant prior to clinical use, the assembly comprising:

• a base;
• a three-way stopcock secured to the base, the stopcock having a plurality of luer fittings;
• a first stopcock luer fitting connectable to a fluid source;
• a fluid column in fluid communication with a second stopcock luer fitting;
• and
• a flushing line comprising a distal end opening in fluid communication with a third stopcock luer fitting, the flushing line further comprising a proximal end opening.

A catheter comprising:

• a first catheter lumen extending from an open distal end of the catheter into a handle coupled to a proximal end portion of the catheter;
• a tissue penetrating element disposed on, and extending distally from, an open distal end of the catheter;
• and
• a guard member comprising a proximal portion disposed over, and translatable relative to, the respective tissue penetrating element and distal end of the catheter, the guard member defining a guard member lumen configured to receive and cover the tissue penetrating element, the guard member lumen defining a longitudinal axis of the guard member,
• wherein the proximal portion of the guard member transitions into a split-open distal portion adjacent a distal opening of the guard member lumen, the split-open distal portion comprising a contour configured to engage and deflect the tissue penetrating element at an angle relative to the longitudinal axis of the guard member when the guard member is translated proximally relative to the tissue penetrating element.

A shroud assembly for delivering an implant through a catheter lumen, the shroud assembly comprising:

• an elongate tubular shroud body having open proximal and distal ends;
• an implant retention feature coupled to the proximal end of the shroud body, the implant retention feature having a proximal end and an open distal end;
• and
• a shroud lumen extending through the shroud body from the distal end opening of the shroud body, the proximal end opening of the shroud body, and an interior of the implant retention feature, respectively, and
• wherein the implant retention feature is configured to secure a proximal end portion of the implant in the shroud assembly when the implant is disposed in the shroud lumen and the shroud assembly is disposed in the catheter lumen.