A method of making a high flexibility distal zone on a neurovascular catheter is provided. The method includes the steps of dip coating a removable mandrel to form a tubular inner layer on the mandrel, coating the tubular inner layer with a tie layer, applying a helical coil to the outside of the tie layer, positioning a plurality of tubular segments, heating the tubular segments to form the high flexibility distal zone on the neurovascular catheter; and removing the mandrel.

A device comprises a tubular member with a longitudinal axis having a proximal end and a distal end, at least one partial cut located at, along or near the distal end of the tubular member, the at least one partial cut comprising an orientation that is angled relative to both the longitudinal axis and an axis transverse to the longitudinal axis, a pusher member positioned within an interior of the tubular member and configured to selectively advance the distal end of the tubular member longitudinally, wherein the distal end of the tubular member is configured to at least partially rotate when the pusher member is advanced relative to the tubular member so at to facilitate placement of the distal end in a particular branch of a subject's intraluminal network, wherein the distal end of the tubular member is configured to longitudinally elongate along or near an area of the at least one partial cut.

A urinary catheter is readily removed and replaced with a second urinary catheter without introducing foreign matter or contaminants into the bladder. The first urinary catheter includes an extra lumen that houses a sheath, which sheath seals the extra lumen from introduction of fluids. The sheath seals an opening hole at or near the tip of the catheter. After the sheath is extracted from the catheter, a guidewire is threaded through the extra lumen and into the patient's bladder. The first urinary catheter is withdrawn from the patient, leaving the guidewire in the patient. A second urinary catheter is inserted into the patient over the guidewire, with the guidewire present in the urine lumen of the second urinary catheter. The guidewire then is extracted from the patient. The second urinary catheter may also have an extra lumen and a sheath with a break-away seal so that the second urinary catheter may be removed and replaced in like manner.

Introducer sheaths and (e.g., guide) catheters with inflatable trapping elements for trapping and/or stabilizing devices (e.g., guidewires, catheters, and/or the like) in a primary lumen of the sheath or catheter. Such sheaths and catheters may be configured for endovascular, endoscopic, laparoscopic, and/or urological procedures.

Rapid exchange balloon catheter, and applications thereof. The balloon catheter includes a shaft and a guidewire channel. Shaft includes infusion and inflation walls. Infusion wall encloses an infusion lumen and comprises fluid inlet and fluid outlet located distally to fluid inlet. The inflation lumen extending axially therealong opened at a distal end thereof into an inner volume of a dilatation balloon. Guidewire channel is sized to closely fit over a pre-scribed guidewire for allowing unhindered passing therethrough with the guidewire. Guidewire channel includes a channel distal end protruding distally from the balloon with a distal guidewire opening, and a channel proximal end with a proximal guidewire opening at the shaft between fluid inlet and fluid outlet. Applications include methods for angioplasty and revascularization in which a single balloon catheter is used for dilatation and/or occlusion, and for delivering fluid proximally to the balloon.

Double-lumen infusion catheter including: a shaft having proximal section, distal section, and intermediate section therebetween; first and second lumens extending along a length of the shaft and having arc shaped wall therebetween; and an inflatable member provided distally to intermediate section, and over the distal section. First lumen has cross section larger than cross section of second lumen and is configured to receive a guidewire therethrough and allow fluid flow via an unobstructed portion of first lumen. Unobstructed portion is formed along guidewire outer surface, between guidewire outer surface and inner wall of first lumen, and extends from an inlet at proximal end of intermediate section to an outlet at distal end of intermediate section. First lumen is narrowed to approximate a first diameter in shaft proximal and distal sections, and is widened to approximate a second diameter greater than first diameter in the shaft intermediate section.

A catheter including a mesh member having a tubular shape and being radially expandable and contractable, a first hollow shaft connected to a proximal end of the mesh member, a distal end tip, and a core wire. The first hollow shaft includes a distal end side shaft having a distal end connected to the proximal end of the mesh member and a proximal end side shaft having a distal end connected to a proximal end of the distal end side shaft. An opening is provided at the proximal end of the distal end side shaft in a connection portion between the distal end side shaft and the proximal end side shaft. A sealing member covering an outer periphery of the core wire and allowing the core wire to be slidable thereinside is arranged at the distal end of the proximal end side shaft in the connection portion.

A catheter for dilating and/or destroying a stenosis in a vessel of a patient includes a catheter shaft having a cavity, at least one first active element within the cavity fixedly connected to a wall delimiting the cavity, and at least one radially protruding scoring element arranged on the outside of the catheter shaft at the cavity for exerting a pressure force on a stenosis in a vessel. The at least one first active element is configured to react to an axially movable element by radially expanding the catheter shaft and thereby radially expanding the at least one radially protruding scoring element.

Embodiments include medical devices comprising a handle assembly including a wire tensioner component and an adjustment knob, the adjustment knob configured to rotate about a longitudinal axis of the handle assembly; an elongate shaft coupled to the handle assembly, the elongate shaft defining a lumen and including a deflectable section; a first wire coupled to the adjustment knob and extending from the adjustment knob through the lumen to at least a distal end portion of the deflectable section; and a second wire coupled to the wire tensioner component and extending from the wire tensioner component to at least the distal end portion of the deflectable section, the second wire having a deflectable extraluminal section configured to deflect independently of the deflectable section.

A medical system includes a source of a material, a first tube, and a second tube. The material is configured to expand and form a porous body after the material is deployed into a body lumen. The first tube is configured to deliver the material into the body lumen, and the second tube is configured to apply suction to the porous body.