URETHRAL PATENCY IMPLANT
First Claim
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1. A scaffold for expanding a portion of a urethra that extends through a prostate, the scaffold comprising:
- an elongate body having a proximal end, a distal end, an outer surface, and an inner surface,the elongate body comprising a plurality of undulating circumferential members disposed between the proximal end and the distal end, the undulating circumferential members being spaced apart along a longitudinal axis of the scaffold and being connected to at least one adjacent undulating circumferential member by at least one axial connector;
the elongate body having a collapsed state and an expanded state, the collapsed state configured to enable the elongate body to be delivered into the urethra and to enable the elongate body to be navigated to a position within the portion of the urethra that extends through the prostate, the expanded state configured such that the undulating circumferential members provide the elongate body with sufficient radial strength to maintain open the portion of the urethra that extends through the prostate,the elongate body having a width defined in a plane transverse to the longitudinal axis at a distal-end, the elongate body having a width defined in a plane transverse to the longitudinal axis at a central section located between the distal end and the proximal end, the width at the central section exceeding the width at the distal end, andwherein the elongate body comprises a material that reacts with urine or with the tissue surrounding the urethra to reduce the volume of the elongate body such that the scaffold can be removed from the urethra after a prescribed period without requiring an interventional procedure.
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Abstract
A urethral scaffold is provided for expanding a portion of the urethra that extends through the prostate. The scaffold is expandable and has a plurality of undulating circumferential members disposed between a proximal end and a distal end of the scaffold. A central section of the scaffold has a width that exceeds the width at the distal end of the scaffold. The scaffold is made of a material that reacts with urine or with tissue surrounding the urethra to reduce the volume of the scaffold such that the scaffold can self-explant without an interventional procedure.
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Citations
23 Claims
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1. A scaffold for expanding a portion of a urethra that extends through a prostate, the scaffold comprising:
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an elongate body having a proximal end, a distal end, an outer surface, and an inner surface, the elongate body comprising a plurality of undulating circumferential members disposed between the proximal end and the distal end, the undulating circumferential members being spaced apart along a longitudinal axis of the scaffold and being connected to at least one adjacent undulating circumferential member by at least one axial connector; the elongate body having a collapsed state and an expanded state, the collapsed state configured to enable the elongate body to be delivered into the urethra and to enable the elongate body to be navigated to a position within the portion of the urethra that extends through the prostate, the expanded state configured such that the undulating circumferential members provide the elongate body with sufficient radial strength to maintain open the portion of the urethra that extends through the prostate, the elongate body having a width defined in a plane transverse to the longitudinal axis at a distal-end, the elongate body having a width defined in a plane transverse to the longitudinal axis at a central section located between the distal end and the proximal end, the width at the central section exceeding the width at the distal end, and wherein the elongate body comprises a material that reacts with urine or with the tissue surrounding the urethra to reduce the volume of the elongate body such that the scaffold can be removed from the urethra after a prescribed period without requiring an interventional procedure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 23)
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9. A scaffold for expanding the urethra, comprising:
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an elongate body having a proximal end, a distal end, an outer surface, and an inner surface, the elongate body being disposed along a longitudinal axis of the scaffold between the proximal end and the distal end, the elongate body having a collapsed state and an expanded state, the elongate body having sufficient radial strength to maintain a lumen thereof open when disposed in the urethra, the outer surface of elongate body having a width defined in a plane transverse to the longitudinal axis at a distal-end, the outer surface of elongate body having a width defined in a plane transverse to the longitudinal axis at a central section located between the distal end and the proximal end, the width at the central section exceeding the width at the distal end, wherein the elongate body comprises a removal configuration in which the scaffold will self-explant after a prescribed period. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A scaffold for expanding a urethra through a narrows formed in the urethra, comprising:
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an elongate body having a proximal end, a distal end, an outer surface to be expanded into contact with the urethra, and an inner surface configured to surround a lumen for urine flow, the elongate body having an expanded state configured with sufficient radial strength to maintain the lumen open when disposed in the narrows of the urethra, wherein at least a portion of the elongate body is configured to be eroded by urine. - View Dependent Claims (19, 20, 21, 22)
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Specification