A torque coil 10 includes a first filar configured in an inner layer 14 that is helically wound in a constricted state such that it defines an inner lumen providing access between a proximal and distal end of the torque coil. A second filar is configured in an outer layer 18 that is helically wound over the inner layer in a constricted state. At least one of the first and second filars includes a signal transmitting material surrounded by an isolating material thereby allowing transmission of signals between the proximal and distal end of the torque coil in one of the layers. At least one of the first and second filars includes a torque transmitting material thereby configuring the torque coil to transfer torque from the proximal to the distal end.

A method and systems for treating chronic total occlusions, particularly those that are difficult to treat, is disclosed. In this approach, recanalizing the CTO is achieved using a combined antegrade and retrograde approach. The proximal end of the occlusion is penetrated using an antegrade wire, using a traditional approach. Using collateral vessels, the distal end of the occlusion is crossed in a retrograde fashion and by appropriately maneuvering each member, a continuous channel is created. Additional elements such as capture devices, dilators and injection catheters are also disclosed.

A guide wire includes a core shaft, a coil body curved from the proximal end side to the distal end side of the guide wire, and a fixing portion fixing the core shaft to the coil body. The core shaft includes a first contact part in contact with an inner surface of the coil body on an opposite side to the curving direction, and a second contact part in contact with the inner surface of the coil body in the curving direction, at a position closer to the distal end than the first contact part. The fixing portion includes a first fixing portion fixing the core shaft to the coil body at a position closer to the proximal end than the first contact part, and a second fixing portion fixing the core shaft to the coil body at a position closer to the distal end than the second contact part.

The guide wire includes a core shaft, a coil body with a wire helically wound around the outer periphery of the core shaft, and a coating layer provided on the outer periphery of the coil body. The coating layer has a peak portion protruding in the outer peripheral direction of the guide wire in a swollen state. On a cross-section including a central axis of the coil body, an apex of the peak portion is present at a position on a proximal end side of a first virtual straight line that extends through a central point of a first transverse section of the wire and is perpendicular to the central axis and at a position on a distal end side of a second virtual straight line that extends through a central point of second transverse section of the wire and is perpendicular to the central axis.

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.

A guide wire includes a core shaft and a coil body covering an outer surface of a distal portion of the core shaft. The coil body includes a straight section that extends in a straight state from a proximal end of the coil body toward a distal end of the coil body, and a bent section arranged at a distal end of the straight section. The coil body may be formed by winding at least one element wire into a helical coil structure, or by winding a plurality of stranded wires (obtained by stranding a plurality of element wires) into a helical coil structure. The element wires and/or the stranded wires of the coiled body are in contact with each other on a side of the bent section opposite to a side toward which the bent section is bent relative to an axial direction of the straight section.

A guidewire comprises a core shaft, a coil body covering a distal end portion of the core shaft, and a coating agent covering an outer periphery of the coil body, wherein the coil body includes a distal coil body disposed on a distal side of the coil body, and a proximal coil body disposed on a proximal side of the distal coil body, a surface roughness of the proximal coil body is higher than a surface roughness of the distal coil body.

The present disclosure provides an improved guidewire assembly including a sensor disposed on a distal portion thereof and a proximal connector disposed on a proximal portion thereof for electrically coupling the guidewire assembly to an external device. The proximal connector comprises at least one proximal contact and at least one reflowed insulative element disposed adjacent the at least one proximal contact.

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 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.