| 主权项 |
1. A stent for insertion into a urethra, the stent comprising:
a generally tubular stent body having a sidewall defining an outer contour and an interior lumen, the generally tubular stent body having a pre-set expanded configuration in which the outer contour is triangular in cross-section when relaxed and free from constraint, the triangular cross-section of the outer contour comprising three sides and three vertices and at least one of the three sides is curved when in the pre-set expanded configuration; wherein: the generally tubular stent body is collapsible to a collapsed configuration for insertion into the urethra, after which the generally tubular stent body is configured for expansion and reversion back toward the pre-set expanded configuration in the urethra, the triangular cross-section of the outer contour in the pre-set expanded configuration is configured to conform with a majority of a cross-sectional shape of the urethra when expanded in the urethra, and the interior lumen is configured to concurrently provide a relatively large and effective passageway for urine flow, the tubular stent body is elongate and having a body length, and the triangular cross-section of the outer contour includes an opening in one of the three sides in the pre-set expanded configuration, and the opening is continuous along the body length. |
