Aortic filter

• US 7,585,309 B2
• Filed: 05/16/2002
• Issued: 09/08/2009
• Est. Priority Date: 05/16/2002
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Larson, Christopher R.
• Primary Examiner(s): Nguyen; Anhtuan T
• Assistant Examiner(s): NGUYEN, TUAN VAN
• Application Number:
  US10/146,982
• Publication Number:
  US 20030216774A1
• Time in Patent Office: 2,672 Days
• Field of Search: None
• US Class Current: 606/200
• CPC Class Codes: A61F 2/0105 Open ended, i.e. legs gathered only at one side
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• 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

Abstract

Devices and methods for filtering embolic debris from a body lumen. The present invention includes a filter coupled to an elongate shaft. In some embodiments, the shaft may be tubular so as to be capable of allowing a guiding, therapeutic, or diagnostic device to pass therethrough.

Claims

1. An embolic protection device, comprising:

an elongate tubular shaft having a proximal end, a distal end, and a lumen extending at least in part therethrough;

a filter coupled to the shaft proximate the distal end, the filter having a distal mouth region, the filter including an extension portion of non-filtering material extending at least in part distally beyond the distal mouth region; and

a plurality of pull cords coupled to the mouth portion, the pull cords forming a plurality of loop portions, and extending proximally along a longitudinal axis of the shaft such that altering the position of the pull cords shifts the filter between a first generally collapsed configuration and a second generally expanded configuration, wherein each of the loop portions includes a first end region disposed in a first cord lumen formed in a tube wall of the tubular shaft and a second end region disposed in a second cord lumen formed in the tube wall.

2. The embolic protection device of claim 1, wherein the tubular shaft include a tube wall having a plurality of cord lumens formed therein and wherein the pull cords are disposed in the cord lumens.

3. The embolic protection device of claim 1, wherein the pull cords extend through the lumens of the tubular shaft.

4. The embolic protection device of claim 1, wherein the pull cords are threaded through a portion of the filter.

5. The embolic protection device of claim 1, wherein at least one pull cord includes a metal.

6. The embolic protection device of claim 1, wherein at least one pull cord includes a radiopaque material.

7. The embolic protection device of claim 1, further comprising a delivery sheath disposed over the tubular shaft.

8. The embolic protection device of claim 1, further comprising a medical device disposed within the lumen of the tubular shaft.

9. The embolic protection device of claim 8, wherein the medical device includes a guidewire.

10. The embolic protection device of claim 1, wherein the medical device includes a catheter disposed over the guidewire.

11. The embolic protection device of claim 10, wherein the catheter includes an expandable balloon.