A medical elongated body is disclosed, which can improve the operability by suppressing anisotropy of torque transmission performance in accordance with the rotational direction while maintaining flexibility. The medical elongated body has a proximal shaft, which extends in an axial center direction and includes at least a part of which a spiral slit is formed. The proximal shaft includes a site in which the spiral inclination angles, which are angles in an extending direction of a spiral of the slit with respect to a cross-section orthogonal to the axial center direction, are different from each other, and a stepped portion in which the angle of the slit changes locally with respect to the spiral inclination angle is formed on one opposed surface constituting the slit, and an abutting portion on which the stepped portion abuts when the proximal shaft is twisted.

An instrument for endoscopic applications has a first end portion and a second end portion opposing the first end portion. An intermediate cylindrical member of the instrument has a handling end portion with a flexible portion located at the first end portion and actuating means located at the second end portion. The actuating means has a first cylindrical part. The handling end portion has a second cylindrical part connected to the actuating means by longitudinal elements for transferring a movement of the actuating means to a bending of the handling end portion. The longitudinal elements are separated from one another by longitudinal slits defined in the intermediate cylindrical member. Each of the longitudinal elements is composed of a strip, adjacent strips being separated by a gap. A plate is arranged to move in a longitudinal direction of the gap but has a circumferential width filling a width of the gap.

The disclosure relates to cannulae, delivery systems, methods of making cannulae, and methods of making delivery systems. A delivery system comprises an elongate outer tubular member defining an outer tubular member lumen, a cannula having a circumferential wall extending between a proximal end and a distal end and defining an interior lumen, and an intraluminal medical device disposed within the outer tubular member lumen distal to the cannula and not about the cannula. A pattern of openings arranged in an interrupted spiral extends circumferentially along the cannula.

A medical elongated body is disclosed that suppresses elongation in an axial direction while maintaining high flexibility and has high torque transmission capability even in a bent state. The medical elongated body includes a tube shaped body. The tube shaped body has a slit extending in a spiral shape while meandering, the slit is formed from a pair of a first opposing surface and a second opposing surface, the first opposing surface forms a first convex portion, the first convex portion has a first wide portion having a width wider in a circumferential direction Y, the second opposing surface forms a first concave portion which surrounds and accommodates the first wide portion, the first convex portion has a first plane portion and a first side portion connected to both end portions, and in a circumferential developed view, the first side portion and the first plane portion have tangential discontinuity.

Medical devices and methods for making and using medical devices are disclosed. An example method for manufacturing a medical device may include cutting a tubular body into a plurality of ring members. The plurality of ring members may include a first ring member and a second ring member. A connecting member may extend between the first ring member and the second ring member. The method may also include disposing a polymeric member along the plurality of ring members to define a tubular member and articulating the tubular member to break the connecting member.

A guide catheter extension, including a push member having a lumen, a proximal end and a distal end; a tube frame defining a lumen therein, a longitudinal axis, and a proximal segment and a distal segment, wherein the tube frame comprises a plurality of cut patterns therein; and a tongue element extending from the proximal segment of the tube frame, wherein the tongue element is coupled to the push member.

A catheter includes an elongated tubular shaft having a distal end, a proximal end, and a lumen extending therethrough. The elongated tubular shaft includes a polymeric outer layer, a polymeric inner layer, and a braided middle layer. A marker band is positioned adjacent the distal end of the elongated tubular shaft and may surround the middle layer, and a polymeric distal tip is attached to the distal end of the elongated tubular shaft. A distal end of the outer layer terminates proximal to the marker band such that the middle layer includes an exposed region that is exposed from the outer layer between the distal end of the outer layer and a proximal end of the marker band, and the distal tip is formed over the exposed region of the middle layer and the marker band, and extends distally beyond the distal end of the elongated tubular shaft.

Medical catheters for transfer of fluids comprise a laser cut hypotube and an embedded polymer flowed into the cuts of the laser-cut hypotube. The laser cut hypotube may be configured to extend along at least about the distal 30% of the catheter length. The laser cut hypotube may further comprise a plurality of sections, each of the plurality of sections having a distinct laser cut pattern. The distinct laser cut pattern may be associated with a flexibility of the corresponding section. The catheter may further comprise a low friction polymer coating over an exterior surface, an interior surface, or both.

An articulating shaft for a steerable catheter system includes a tubular body and a plurality of wire support elements integrally formed from a single piece with the tubular body. The tubular body has a longitudinal central axis and a sealed lumen with a distal opening and a proximal opening. The wire support elements support an actuating wire. Each of the wire support elements has a feed-through opening receiving the actuating wire. A pair of adjacent wire support elements are separated from each other in an axial direction by a slot.

An introducer (10) with a steerable distal tip section (17) is disclosed. The steerable distal tip section may comprise an articulation support member comprising a laser-cut pattern of symmetrical elongated apertures in which the shape of each aperture is defined by at least three radii, a central radii being the largest and two end radii being smaller. This pattern of apertures can minimize ovaling of the cross-sectional shape of introducer shaft over the length of the deflectable section. The introducer can articulate in multiple planes. A tension pull wire can allow the introducer to resist directional bias.