A guidewire made from a drawn filled tube composite wire is described. The composite wire has a stainless steel outer sheath jacketing a nitinol core wire. The drawn filled tube composite wire is ground at its distal end to expose the nitinol core, which has superelastic and kink resistant properties that are desirable for the distal end of a guidewire. The proximal end of the drawn filled tube is not ground or if ground, the outer sheath of stainless steel is not removed to an extent sufficient to expose the nitinol core.

The embodiments presented herein relate to concepts designed to eliminate the gap between a catheter and guide wire that can otherwise contribute to a catheter getting stuck within the vasculature.

A catheter holder includes an attachment section configured to be attachable to a holder tube that accommodates at least a portion of a sheath of an image diagnosis catheter in a wound state, a support section extending from the attachment section in a direction away from the wound holder tube, and a fixing section provided on a second end side of the support section, which is opposite to a first end side of the support section on which the attachment section is provided, and configured to fix a unit connector and a hub of the image diagnosis catheter to hold the outer tube, which is exposed from an opening portion of the holder tube, in a linear shape to be fixed in position.

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 extends into the tube structure. The tube structure includes a plurality of bypass cuts formed tangentially within the tube structure to increase the flexibility of the tube structure and to reduce the tendency of resilient forces from the tube structure to disrupt a shaped distal tip of the guidewire device.

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.

A guidewire made from a drawn-filled tube composite wire is described. The composite wire has a stainless steel outer sheath jacketing a nitinol core wire. The drawn-filled tube composite wire is ground at its distal end to expose the nitinol core, which has superelastic and kink resistant properties that are desirable for the distal end of a guidewire. The proximal end of the drawn-filled tube is not ground or if ground, the outer sheath of stainless steel is not removed to an extent sufficient to expose the nitinol core.

A catheter assembly is disclosed, which includes a catheter, a catheter hub, a guide wire, and a guide wire hub. The guide wire has a guide wire rigidity changing portion that gradually decreases in rigidity from a proximal side toward a distal side, and the catheter has a catheter rigidity changing portion that gradually decreases in rigidity from a proximal side toward a distal side. In the catheter assembly, the catheter hub and the guide wire hub are connected to each other in a state where the distal side of the guide wire is exposed from a distal end of a lumen of a shaft portion and a guide wire rigidity changing point and a catheter rigidity changing point are aligned with each other in an axial direction.

The embodiments described herein relate to a self-positioning, quick-deployment low profile transvenous electrode system for sequentially pacing both the atrium and ventricle of the heart in the “dual chamber” mode, and methods for deploying the same.

A guide wire includes a core shaft formed of superelastic metal, where the core shaft has a tapered portion having a diameter decreasing from its proximal end toward its distal end, an intermediate portion that is cylindrical and is adjacent to the proximal end of the tapered portion, and a proximal portion adjacent to a proximal end of the intermediate portion and having a maximum diameter larger than a diameter of the intermediate portion; a coil body covering at least a part of the intermediate portion and the tapered portion of the core shaft, the coil body having an outer diameter of 0.36 mm or less; and a distal tip disposed at a distal end of the coil body and forming a distal end of the guide wire, the diameter of the intermediate portion being 0.22 to 0.24 mm.

A catheter device for repositioning or explanting an implantable medical device comprises an outer catheter, and a steerable catheter extending through the outer catheter, wherein the outer catheter is axially movable with respect to the steerable catheter. A snare catheter extends through the steerable catheter, wherein the snare catheter is axially movable relative to the steerable catheter. A mandrel may extend through the snare catheter and comprising a distal end, wherein the mandrel is axially movable relative to the snare catheter. A snare may be arranged on the distal end of the mandrel for establishing a connection to the implantable medical device, wherein the snare, by moving the mandrel with respect to the snare catheter, is at least partially retractable into the snare catheter.