A catheter that has a catheter tube everting inside-out during the process of catheterization. The catheter tube has a plurality of longitudinal protrusions extending from the first end of the catheter tube through at least a portion of the catheter tube, and forming an angle of 0 degrees to 45 degrees with respect to the longitudinal axis of the catheter tube and facing radially inwards, and provides for dilating a circumference of the catheter tube upon everting the catheter tube inside-out from the first end of the catheter tube.

A cannula includes at least one opening at a distal tip, and further includes multiple fenestrations that are maintainable in position substantially immediately or slightly beyond a site or point of cannula entry into a vessel. The fenestrations, in combination with the opening(s) at the cannula's distal tip, enable the simultaneous perfusion of blood into the cannulated vessel along multiple directions, including opposing or anti-parallel blood flow directions relative to a central axis of the cannulated vessel. During a medical procedure (e.g., an extra-corporeal membrane oxygenation (ECMO) procedure) blood introduced into a vessel such as the femoral artery by way of the cannula can thus exit the cannula in a manner that provides concurrent blood flow in a first direction towards the heart and a second direction away from the heart.

Disclosed are rapidly insertable central catheters (“RICCs”) including assemblies and methods thereof. In some embodiments, a RICC assembly includes a RICC and an introducer. The RICC includes a soft catheter tube having an introducing aperture that opens into a primary lumen of the RICC. The introducer includes an introducer catheter including a hard catheter tube having an introducing hole that opens into a single lumen of the introducer catheter. When the RICC assembly is in a ready-to-deploy state thereof, the introducer catheter is disposed in the primary lumen of the RICC such that a distal end of the introducer catheter extends past a distal end of the RICC. In addition, an introducer needle of the introducer is disposed in the introducer catheter through both the introducing aperture and the introducing hole such that a beveled tip of the introducer needle extends past the distal end of the introducer catheter.

A peritoneal dialysis catheter includes: a catheter tube defining a lumen for carrying peritoneal dialysis fluid to at least one aperture located at or near a distal end of the lumen; at least one cuff located along the outside of the catheter tube; an access site proximally spaced from the at least one cuff, the access site allowing an antimicrobial agent to be introduced into the catheter tube; a reservoir operable with the catheter tube and in fluid communication with the access site, the reservoir storing an amount of the antimicrobial agent received from the access site after an antimicrobial agent introducer is removed from the access site; and a delivery area of the catheter tube in fluid communication with the reservoir, the delivery area positioned so as to target delivery of the antimicrobial agent to the at least one cuff or other desired location along the catheter tube.

A venous catheter assembly includes a hub with opposing suture wings, an extension leg coupled to the hub, and an elongate catheter tube designed for insertion into a blood vessel of a patient. The elongate catheter tube is coupled to the hub and includes at least one fluid-carrying lumen within the outer wall extending between a proximal end and a distal end of the elongate catheter tube. The fluid-carrying lumen is in fluid communication with the extension leg and an opening in the outer wall at the distal end of the elongate catheter tube. The elongate catheter tube also includes at least one terminating lumen within the outer wall extending to a closed termination point.

This document describes devices for in vivo drug testing in the brain. This document also describes implantable devices for long-term drug delivery to the brain parenchyma, and for access to biomarkers from the parenchyma.

Embolization particles can be safely delivered to the left gastric artery of a patient by introducing the distal end of a catheter in the patient's left gastric artery, inflating a balloon located near the distal end of the catheter so that the balloon prevents blood from flowing through the left gastric artery, and injecting a mixture of particles and contrast agent into the proximal end of the catheter so that they flow through the catheter. In addition, a path is provided for blood to flow into the catheter through an opening in the sidewall of the catheter at a position that is proximal to the balloon, and out through the distal end of the catheter. This blood flow helps to carry the particles along to their destination in the distal portion of the left gastric artery. The particles are also prevented from flowing into portions of the patient's artery system that are proximal of the balloon.

A minimally invasive system for monitoring and treating high intracranial pressure levels resulting from traumatic brain injury comprises an intravenous access device, an elongate member, a console, and an aspiration and injection catheter. The system is capable of monitoring pressure levels and relocating fluid from the brain to another part of the patient's body to sustain overall constant fluid volume. The method of using the minimally invasive system is also described.

A catheter having a selectively inflatable external balloon and an internal balloon, where the internal balloon is operable as a valve to control fluid flow through a channel.

Disclosed herein are rapidly insertable central catheters (“RICCs”), RICC assemblies, and methods thereof. For example, a RICC can include a catheter tube, a suture wing disposed over a medial portion of the catheter tube, a hub coupled to a proximal portion of the catheter tube, and a number of extension legs extending from the hub. The catheter tube can include a first section in a distal portion of the catheter tube and a second section proximal of the first section. The suture wing can include a projection opposite a patient-facing side of the suture wing and a needle through hole through the projection. The needle through hole can be configured to accept a needle therethrough for insertion of the needle into a primary lumen of the catheter tube, which passes through a catheter-tube through hole through the suture wing. A method of the RICC can include using the RICC.