Importance

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Abstract

An endoscopic device having reduced cross-section and a steering section of enhanced compliance. The device defines a smaller cross-section by eliminating need for pull wires and torsion sleeves. Use of a single fiber optic for steering opens up cross-sectional space to augment both irrigation and aspiration channels within a common catheter shaft. The single fiber optic may be utilized for “pulling” and/or “pushing” on the steering section, thereby providing unidirectional or bidirectional steering with a single fiber or fiber bundle. A distal steering section is configured to enhance compliance in response to the forces exerted by the single fiber optic. The enhanced compliance reduces the stoutness required of the fiber optic enabling a reduction in the size of the single fiber optic, thereby freeing up cross-section of the catheter for other uses. The enhanced compliance also enables tighter and more predictable articulation for better steering dexterity.

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First Claim