Methods and devices for localizing, delineating and anchoring liver lesions for resection
AssigneeMayo Foundation for Medical Education and Research
InventorHoracio J. Asbun
Life of this patent
Estimating the term…
Abstract
This document provides methods and devices for localizing, delineating and/or anchoring lesions for resection from a solid organ (e.g., liver, breast, or pancreas). For example, this document provides devices that can be positioned within liver tissue to help delineate liver tumor tissue from normal liver tissue and to help hold liver tumor tissue in position for resection.
Claims30
A device for localizing or delineating a lesion having proximal, distal, and lateral surfaces for resection from a solid organ, wherein said device comprises:
- (a) an elongated shaft portion having a distal end portion and defining a lumen that extends at least a part of the length of said elongated shaft portion, wherein the length of said distal end portion defines a longitudinal axis, wherein said distal end portion of said elongated shaft portion is configured to be advanced into said proximal surface of said lesion, to be advanced through said lesion, and to exit said lesion from said distal surface,
- (b) two or more extender elements having a distal end portion, wherein said two or more extender elements are configured to be advanced within said lumen of said shaft portion, wherein said distal end portion of said two or more extender elements are configured to exit said lumen at said distal end portion of said elongated shaft portion and are configured to extend away from said distal end portion of said elongated shaft portion along at least a portion of said distal surface of said lesion in a direction between about 45 degrees and about 135 degrees with respect to said longitudinal axis, and wherein at least one of said two or more extender elements defines a lumen, and
- (c) an additional extender element having a distal end portion, wherein said additional extender element is configured to be advanced within said lumen of said at least one extender element defining said lumen, wherein said distal end portion of said additional extender element is configured to exit said lumen of said extender element defining said lumen at said distal end portion of said extender element defining said lumen and is configured to extend away from said distal end portion of said extender element defining said lumen along at least a portion of said lateral surface of said lesion in a direction between about 45 degrees and about 135 degrees with respect to a longitudinal axis of said extender element defining said lumen.
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A method for localizing or delineating at least a portion of a lesion for resection from a solid organ, wherein said method comprises:
- (a) advancing an elongated shaft portion having a distal end portion and defining a lumen that extends at least a part of the length of said elongated shaft portion into a proximal surface of a lesion and through said lesion until about 2 mm to about 10 mm of said distal end portion of said elongated shaft portion exits a distal surface of said lesion, and
- (b) advancing two or more extender elements having a distal end portion within said lumen of said shaft portion in a manner wherein each distal end portion of said two or more extender elements extends away from said distal end portion of said shaft portion along at least a portion of said distal surface of said lesion until a distance about 2 mm to about 10 mm past a lateral edge of said lesion is reached, thereby delineating at least a portion of said lesion for resection.
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Dependencies are inferred from the claim text.