Guidewire extension system

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/09 (2006.01) A61M 25/01 (2006.01)

Patent

CA 2157899

A roll formed, guide wire extension system (10) for connecting an extension wire (18) to a guide wire (14) is disclosed. The system comprises a connector or sleeve (30), a tubular outer body, a guide wire retention means, and extension wire retention means, a guide wire (14) and an extension wire (18). The sleeve (30) is produced by rolling a portion of a formable hollow tubular work piece upon an elongated projection with the projection being disposed at an angle with respect to the axis of the work piece. This process is repeated on the remaining part of the work piece to create external threads in the sleeve of opposite pitch. The roll formed external beads or dents in the sleeve create threads in the interior of the sleeve, the threads running in opposite directions and meeting at approximately the middle of the sleeve.

L'invention se rapporte à un système d'extension de fil de guidage formé par cylindrage (10), qui sert à raccorder un fil d'extension (18) à un fil de guidage (14). Ce système comprend un raccord ou un manchon (30), un corps externe tubulaire, un organe de retenue du fil de guidage, un organe de retenue du fil d'extension, un fil de guidage (14) et un fil d'extension (18). On produit le manchon (30) par cylindrage en faisant passer une partie d'une pièce à usiner tubulaire creuse façonnable sur un profil allongé, lequel est disposé selon un angle par rapport à l'axe de la pièce à usiner. Ce processus est répété sur la partie restante de la pièce à usiner, de façon à créer dans la manchon des filetages externes de pas opposés. Les nervures ou dents externes formées par cylindrage dans le manchon créent à l'intérieur du manchon des filetages qui s'étendent dans des directions opposées et se rencontrent approximativement au milieu du manchon.

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