A guide wire configured for use in medical magnetic resonance applications includes a multi-lumen wire composed of an electrically nonconductive plastic material. The wire extends continuously from a proximal end region to a distal end region of the guide wire and has at least two separate, axially extending hollow channels, and/or at least two coaxial wires arranged coaxially one inside another and extending continuously from a proximal end region to a distal end region of the guide wire. An axially alternating sequence of rod-shaped, elastic stiffening pieces composed of an electrically conductive, nonmagnetic material having higher bending stiffness than the plastic material of the multi-lumen wire, and electrically nonconductive spacer pieces, is arranged in at least one of the hollow channels. At least one of the coaxial wires is constructed from an axially alternating sequence of rod-shaped, elastic stiffening pieces composed of an electrically conductive, nonmagnetic material and electrically nonconductive spacer pieces.

An apparatus includes a tube configured for insertion into a body of a subject, the tube comprising a plurality of strips, which are angled obliquely with respect to a longitudinal axis of the tube, by virtue of the tube being shaped to define a plurality of slits having respective oblique proximal ends and respective oblique distal ends. The distal end of each of the slits is nested between the proximal end of a first other one of the slits and the proximal end of a second other one of the slits such that (i) one of the strips is disposed between the distal end of the slit and the proximal end of the first other one of the slits, and (ii) another one of the strips is disposed between the distal end of the slit and the proximal end of the second other one of the slits.

A rigidizing device includes an elongate flexible tube, a braid layer positioned over the elongate flexible tube, an outer layer over the flexible tube and the braid layer, and an inlet between the elongate flexible tube and the outer layer and configured to attach to a source of vacuum or pressure. The braid layer has a plurality of strands braided together at a braid angle of 5-40 degrees relative to a longitudinal axis of the elongate flexible tube when the elongate flexible tube is straight. The rigidizing device is configured to have a rigid configuration when vacuum or pressure is applied through the inlet and a flexible configuration when vacuum or pressure is not applied through the inlet. The braid angle is configured to change as the rigidizing device bends when the rigidizing device is in the flexible configuration.

A guide wire includes a first core shaft, a second core shaft, a first tubular member, and a second tubular member. The first tubular member is disposed to cover (i) a contact portion where the first core shaft and the second core shaft are arranged opposite to each other so that their central axes coincide, and (ii) a part of each of the first core shaft and the second core shaft, the part being adjacent to the contact portion. The second tubular member, having a tubular shape, covers at least the first tubular member and is fixed to both the first core shaft and the second core shaft.

Present invention is a tip adjustable stylet to be inserted into a tubular structure and to be pushed out its distal aperture to form curvatures. The device comprises a bendable member, a retracting string, an intersegment and a control handle. The bendable member has a control ring at its proximal end and a tip at its distal end. An operator can push the bendable member distally from the proximal end along the lumen of the tubular structure. Predetermined extensibility and length of the retracing string limit distance of the bendable member being pushed and hold the distal portion of the bendable member backward when the bendable member is been pushed forward outside of the tubular structure's distal aperture, thereby to bend the distal portion of the bendable member into the curves therefore to move its tip to a target location, such as patient's vocal cords opening.

The present disclosure relates to guidewire devices having shapeable tips and effective torquability. A guidewire device includes a core having a proximal section and a tapered distal section. A tube structure is coupled to the core such that the tapered distal section of the core extends into and distally beyond the tube structure. The portion of the core extending distally beyond the tube forms a shapeable tip. One or more coils also extend distally beyond the tube. The tip is configured to reduce the tendency of resilient forces from the tube structure to disrupt a customized shape of the tip.

The present disclosure relates to guidewire devices having shapeable tips and effective torquability. A guidewire device includes a core having a proximal section and a tapered distal section. A tube structure is coupled to the core such that the tapered distal section of the core extends into and distally beyond the tube structure. The portion of the core extending distally beyond the tube forms a shapeable tip. A polymer covering encompasses the tip. The tip is configured to reduce the tendency of resilient forces from the tube structure to disrupt a customized shape of the tip.

A catheter comprises a hollow sheath, a guidewire extendable through the hollow sheath, where the guidewire comprises a controllably bendable tip portion, a hollow tubular intermediate portion connected to the tip portion, an electrical connection portion connected to the hollow tubular portion, at least a first wire extending through the hollow tubular portion and connected at a first end thereof to a first circumferential conductor and at a second end thereof to a surface of the tip end, and a power supply connector, therein the electrical connection portion is received in the power supply connector and a first terminal in the power supply connector contacts the first circumferential conductor.

The present disclosure provides a guide wire system comprising (a) a guide wire having a distal end and a proximal end, wherein the guide wire comprises a superelastic material, (b) a first connector coupled to the proximal end of the guide wire, (c) a second connector coupled to the guide wire between the distal end and the proximal end, (d) an electromagnetic sensor coupled to the distal end of the guide wire, and (e) a polymeric tube surrounding the guide wire and at least a portion of the electromagnetic sensor.

A delivery member is provided for delivering and deploying an intravascular medical device. The delivery member includes a flexible distal portion including a wound wire coil surrounded by a flexible sleeve and inhibited from extending lengthwise by a stretch resistant member positioned through the lumen of the coil. The delivery member can include hypotubes positioned on either side (distally and proximally) from the wound wire coil to which the stretch resistant member and the wound wire coil can be attached. The flexible sleeve can be fused to the stretch resistant member between windings of the wire coil.