Guidewire structure

A - Human Necessities – 61 – M

Patent

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A61M 25/01 (2006.01)

Patent

CA 2566694

A first guidewire structure includes a medical guidewire extendable beyond a distal end of a medical instrument and having first and second segments, wherein the bending moment of inertia of the first segment is less than the bending moment of inertia of the second segment. A second guidewire structure includes a medical guidewire extendable beyond a distal end of a medical instrument having a mechanized guidewire drive assembly. The medical guidewire has an exterior surface including a repetitive series of spaced-apart surface elevation features. One example of surface elevation features is external threads. The spaced-apart surface elevation features are adapted for operable engagement with the mechanized guidewire drive assembly.

Une première structure de fil guide inclut un fil guide médical extensible au-delà de l'extrémité distale d'un instrument médical et qui possède des segments premiers et deuxièmes, où le moment fléchissant d'inertie du premier segment est moindre par rapport au moment fléchissant d'inertie du second segment. Une deuxième structure de fil guide inclut un fil guide médical extensible au-delà de l'extrémité distale d'un instrument médical et qui a un assemblage d'entraînement de fil guide mécanisé. Le fil guide médical a une surface extérieure comprenant une série répétitive d'élévations de surface espacées entre elles. Les filets extérieurs constituent un exemple de cette caractéristique d'élévation de surface. Les caractéristiques de surface espacées sont adaptées pour former un engagement manipulable avec l'assemblage d'entraînement du fil guide.

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