ANGIOPLASTY DEVICE WITH EMBOLIC FILTER

• US 20100106182A1
• Filed: 10/22/2009
• Published: 04/29/2010
• Est. Priority Date: 10/22/2008
• Status: Active Grant

• Current Assignee: Contego Medical, Inc.
• Original Assignee: Contego Medical, LLC
• Inventors: Patel, Udayan G., Sachar, Ravish
• Granted Patent: US 9,510,930 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• 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 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2230/0093 Umbrella-shaped, e.g. mushroom-shaped
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube

Abstract

An angioplasty device has a filter associated with it to capture embolic particles that may be broken free during an angioplasty procedure. In one embodiment the embolic filter has a frame in which struts are connected to end rings and to each other by a plurality of interconnected oval members. In another embodiment the device includes an actuator at the proximal end of an actuator wire. By rotating a knob on the device, the physician can smoothly tension the wire by a predetermined amount to prevent the filter from opening too much or too little. Various other embodiments of filter frames are also disclosed.

Claims

1. A frame for supporting an embolic filter, comprising:

a first ring;

a second ring coaxial with and spaced apart from the first ring;

a first plurality of generally parallel struts having a first end adjacent the first ring and a second end extending toward the second ring;

a second plurality of generally parallel struts having a first end adjacent the second ring and a second end extending toward the first ring;

a first plurality of sets of interconnected oval members defining openings generally perpendicular to the struts, a set of the first plurality of interconnected oval members joining the first end of each of the first plurality of struts to the first ring;

a second plurality of sets of interconnected oval members defining openings generally perpendicular to the struts, a set of the second plurality of interconnected oval members joining the first end of each of the second plurality of struts to the second ring; and

a third plurality of sets of interconnected oval members defining openings generally perpendicular to the struts, a set of the first plurality of interconnected oval members joining the second end of each of the first plurality of struts to the second end of a corresponding one of the second struts;

whereby the oval members form locations of weakness at which the frame can bend; and

whereby the oval members can elongate to permit expansion of the frame.