An introducer may include a layered tubular member having an inner liner including at least one folded portion extending along a distal region of the inner liner in a delivery configuration; a reinforcing member disposed over at least a portion of the inner liner, the reinforcing member including a plurality of longitudinal spines defining a plurality of openings disposed between adjacent longitudinal spines, wherein each folded portion is circumferentially overlapped by one of the plurality of openings; and an outer sheath disposed over the reinforcing member, wherein the outer sheath includes at least one perforation circumferentially overlapping each folded portion; and a tip member fixedly attached to a tapered distal region of the layered tubular member. The inner liner may extend to a distal end of the layered tubular member. At least a portion of each folded portion may terminate proximal of the distal end of the layered tubular member.

The disclosed technology includes a medical probe comprising a tubular shaft extending along a longitudinal axis and including a proximal end and a distal end. The medical probe further comprises an expandable basket assembly proximate the distal end of the tubular shaft. The basket assembly comprises a single unitary structure that includes a plurality of linear spines formed from a planar sheet of material and one or more electrodes coupled to each of the spines, each electrode defining a lumen through the electrode so that a spine extends through the lumen of each of the one or more electrodes. The spines converge at a central spine intersection at a distal end of the basket assembly. The central spine intersection includes one or more cutouts that allows for bending of the spines. Each spine comprises a respective end connected to the distal end of the tubular shaft.

A method of manufacturing a catheter tip by electroplating a conductive material over an insert comprising a negative to a domelike shape thereby forming a shape of the catheter tip comprising a dome with the domelike shape, selectively positioning a plurality of irrigation holes between outer and inner surfaces of the catheter tip, removing the insert thereby leaving the catheter tip and the plurality of irrigation holes, and electropolishing the catheter tip. In other examples, the insert is not removed and instead the step of electroplating causes the insert to be encapsulated with the conductive material thereby forming the catheter tip.

A method of making a flexible medical article or tube, for example, a sheath for a vascular access device, is provided. The method can include extruding a polymer, for example, a polycarbonate-urethane copolymer, to form a tube and annealing the extruded polymer. The method can further include cutting the extruded tube to a desired length before or after annealing, flaring one end of the annealed tube and over-molding the flared portion onto a hub, and forming the other end of the tube into a tip. A sheath formed by such a method is also provided.

This application relates to an improved method for generating microcatheter paths, a method for shaping a mandrel, a computer device, a readable storage medium, and a program product. The method for generating the microcatheter path includes obtaining a cerebral vascular model, generating a centerline, determining the proximal starting point of the centerline, and successively generating a plurality of unit segments from the proximal starting point towards the distal aneurysm. Each unit segment includes a series of connected straight segments and curved segments, and the unit segments are successively connected to form at least a part of the microcatheter path. The generation method includes obtaining the starting point and slope of the straight segment, extending continuously from the starting point of the straight segment along the slope until contacting with the vascular wall, and obtaining the contact point

A system includes a fixture, a laser assembly, and a positioning assembly. The fixture is configured to hold (i) a substrate of a distal-end assembly of a catheter and (ii) a lead placed on a given solder pad disposed on the substrate, the laser assembly is configured to emit a laser beam, and the positioning assembly is configured to move the fixture, with the substrate and the lead, relative to the laser assembly, so as to mark a soldering position, at which the lead is to be attached to the given solder pad, with a laser spot of the laser beam.

Balloon catheters that includes inner and outer elongate shafts, each of which is secured relative to an end of an inflatable member. The inner and outer elongate shafts are secured relative to one another at one more discrete connection locations. The balloon bonding locations are disposed radially inward relative to an outer dimension of the outer elongate shaft.

In some examples, a catheter may include an elongate body and a push assembly. The elongate body may include an inner liner defining an entry port into a lumen defined by the elongate body, and an outer jacket. The push assembly may an anchor member positioned at a distal end of an elongate member. Distal to a proximal end of the elongate body, a first portion of the push assembly, comprising the anchor member, may be positioned between a portion of the inner liner and a portion of the outer jacket. The anchor member may extend only partially around an outer perimeter of the inner liner when the catheter is assembled. Proximal to the proximal end of the elongate body, a second portion of the push assembly, proximal to the first portion, may be positioned outside of the outer jacket and the inner liner.

Disclosed are various examples and embodiments of a cardiac mapping catheter configured for electrophysiological (EP) mapping and suitable for intravascular insertion in a patient's heart, and methods of making same. The cardiac mapping catheter comprises a plurality support arms having electrodes disposed thereon. Various configurations of the cardiac mapping catheter are described and disclosed which provide improved spatial resolution and sensing of EP signals acquired from inside a patient's heart.

A medical probe includes a shaft for navigation in a patient body, and first and second deflection mechanisms. The shaft ends with a flexible section and a spring, followed by a rigid distal tip having one or more medical devices coupled thereto. The first deflection mechanism is configured to deflect the flexible section relative to the shaft. The second deflection mechanism is configured to deflect the distal tip relative to the first flexible section by using the spring.