Medical retrieval basket with legs shaped to enhance capture and reduce trauma

• US 20060190007A1
• Filed: 01/31/2006
• Published: 08/24/2006
• Est. Priority Date: 10/01/1997
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Riley, James W., Bates, James S.
• Granted Patent: US 8,603,104 B2
• Time in Patent Office: Days
• US Class Current: 606/113
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop

Abstract

A medical retrieval device, and related method, uses a basket formed by one or more legs to retrieve material such as calculi. At least one of the legs has at least an inner and an outer surface. The outer surface is an atraumatic surface such as a curved surface. The atraumatic surface can include one or more radii. The inner surface can be flat such that the leg has a D-shaped cross section. Other shapes are possible for the inner surface including a pointed shape that enhances the basket'"'"'s stone crushing or breaking ability. The inner surface, whatever its shape, can have a rough surface (e.g., serrated, etched, toothed, etc.) for further enhancing the basket'"'"'s ability to capture stones and other calculi.

Claims

1. A medical retrieval device, comprising:

a basket including one or more legs forming the basket, at least one of the legs comprising at least two surfaces wherein at least one of the two surfaces comprises a curved surface.

2-35. -35. (canceled)