Medical guidewire

Details Medical guidewire Medical guidewire

A - Human Necessities

61

M

128/93

A61M 25/00 (2006.01) A61B 1/00 (2006.01) A61B 10/00 (2006.01) A61M 25/01 (2006.01)

Patent

CA 1314781

MEDICAL GUIDEWIRE ABSTRACT A medical guidewire has an elongated body that has a degree of flexibility and a distal tip region of relatively greater flexibility. The guidewire consists of a core having a body of first diameter, a distal portion of a relatively smaller diameter, and a generally flat distal end. The end is disposed in the tip region and is spaced proximally from a round tip element that defines the distal end of the guidewire. A first coil is joined to the core body and extends along the core to a termination point in the distal tip region, proximal of the end of the core. A relatively more flexible second coil is joined at its proximal end to the first coil and joined at its distal end to the round tip element. A safety wire is secured to the core and has a generally flat distal end within the second coil, joined to the round tip. A transition wire is secured to the core and has a generally flat distal end that terminates within the second coil intermediate of the distal ends of the core and safety wire. In this or other medical guidewires, the first and second coils are joined in sequence, the second coil overlapping the first coil, both having essentially the same outer diameter. The above resulting in a joint of substantially uninterrupted flexibility.

584160

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