Disc shaped filter

• US 6,932,830 B2
• Filed: 01/10/2002
• Issued: 08/23/2005
• Est. Priority Date: 01/10/2002
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Ungs, Mark T.
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US10/044,354
• Publication Number:
  US 20030130681A1
• Time in Patent Office: 1,321 Days
• Field of Search: 606/200, 606/113, 606/114, 606/127, 606/159, 606213-215, 128/898
• US Class Current: 606/200
• CPC Class Codes: A61F 2/0108 Both ends closed, i.e. legs gathered at both ends
• 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 2230/0078 hyperboloidal

Abstract

Distal protection filter and method of using the same. A distal protection filter may be coupled to an elongate shaft. The filter includes a filter material coupled to a filter frame. The shape of the filter may be generally cylindrical or disc shaped. The filter material may capture embolic debris generated during an intravascular intervention.

Claims

1. A method of filtering embolic debris from a blood vessel, comprising the steps of:

providing a elongate shaft having a filter frame coupled thereto, the filter frame having a filter material permeable to blood coupled thereto, the shaft having an expansion member disposed therein;

advancing the shaft to an area proximate a lesion within a blood vessel of a patient, the blood vessel having a lumen therethrough;

actuating the expansion member so as to shift the filter frame from a generally collapsed configuration to a generally expanded configuration such that the filter material conforms to the blood vessel lumen, wherein expanded the filter frame is generally cylindrical in shape and has a diameter and a length, the diameter being larger than the length;

performing an intravascular procedure that generates embolic debris;

capturing embolic debris with the filter material; and

aspirating the filter material.

2. The method in accordance with claim 1, wherein the shaft comprises a catheter having a lumen extending therethrough and wherein the step of aspirating the filter material includes aspirating embolic debris through the lumen.

3. The method in accordance with claim 1, wherein the expansion member includes a proximal portion and a distal portion, and wherein the step of actuating the expansion member includes applying force in the distal direction to the proximal portion.

4. A method of filtering embolic debris from a renal artery, comprising the steps of:

providing a elongate shaft having a filter frame coupled thereto, the filter frame having a filter material permeable to blood coupled thereto, the shaft having an expansion member disposed therein;

advancing the shaft to the junction of a portion of the renal artery and a kidney, the renal artery having a lumen;

actuating the expansion member so as to shift the filter frame from a generally collapsed configuration to a generally expanded configuration such that the filter material conforms the renal artery lumen, wherein expanded the filter frame is generally cylindrical in shape and has a diameter and a length, the diameter being larger than the length;

performing an intravascular procedure that generates embolic debris;

capturing embolic debris with the filter material; and

aspirating the filter material.