Anchoring mechanisms for intravascular devices

• US 6,902,572 B2
• Filed: 04/02/2003
• Issued: 06/07/2005
• Est. Priority Date: 04/02/2003
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Lowe, Brian J., Beulke, Mel R., Spencer, Steven M.
• Primary Examiner(s): Prebilic, Paul B.
• Application Number:
  US10/405,546
• Publication Number:
  US 20040199198A1
• Time in Patent Office: 797 Days
• Field of Search: 606/200, 606/159
• US Class Current: 606/200
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/22049 Means for locking the guide wire in the catheter
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2002/015 Stop means therefor
• CPC Class Codes: A61F 2230/0008 elliptical or oval

Abstract

Anchoring mechanisms for limiting travel of an intravascular device along an elongated member such as a guidewire or guide catheter are disclosed. The anchoring mechanism may include a leaf spring that can be actuated between an unlocked position and a locked position. In the unlocked position, the leaf spring is slidably and rotationally disposed along the elongated member. In the locked position, the leaf spring is releasably secured to the elongated member, preventing movement thereon. The leaf spring can be attached directly to the intravascular device, or can be formed as a separate member and used as a stopper mechanism to limit travel of the intravascular device along the elongated member.

Claims

1. An intravascular filter device, comprising:

a filter frame disposed about an elongated member;

a filter membrane operatively coupled to the filter frame; and

a leaf spring attached to the filter frame, said leaf spring comprising a flexible body having at least one opening configured to slidably and rotationally receive the elongated member in an unlocked position, and frictionally engage the elongated member in a locked position.

2. An intravascular filter device, comprising:

a filter frame disposed about an elongated member;

a filter membrane operatively coupled to the filter frame, said filter membrane being expandable between a collapsed position and an expanded position;

a leaf spring attached to the filter frame, said leaf spring comprising a flexible body having at least one opening configured to slidably and rotationally receive the elongated member in an unlocked position, and frictionally engage the elongated member in a locked position;

a locking tube configured to actuate the leaf spring between the unlocked and locked positions; and

a delivery sheath configured to contain the filter membrane in the collapsed position.