Fluidic interventional device and method of distal protection

• US 20020120226A1
• Filed: 01/18/2002
• Published: 08/29/2002
• Est. Priority Date: 12/10/1999
• Status: Active Grant

• Current Assignee: Sprite Solutions
• Original Assignee: Sprite Solutions
• Inventors: Beck, Robert C.
• Granted Patent: US 7,494,485 B2
• Time in Patent Office: Days
• US Class Current: 604/27
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• 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 17/32037 for removing obstructions from inner organs or blood vessels, e.g. for atherectomy
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 18/245 for removing obstructions in blood vessels or calculi
• CPC Class Codes: A61B 2017/2215 having an open distal end

Abstract

A catheter for injecting and extracting fluids to interact with material at a treatment site in the body.

Claims

1. A method of distal protection in a vessel comprising:

inserting and positioning an occlusion device in said vessel;

treating a lesion is said vessel at a site near said occlusion device.

inserting a catheter having a extraction section to a location near said occlusion device;

supplying a fluid to said extraction section to engage and entrain debris at the site of said distal occlusion device generating an entrained flow.

providing an extraction lumen proximal of said extraction section to receive said entrained flow.

2. The method of claim 1 wherein:

said extraction lumen is advanced over said extraction section to further extract debris while said extraction section is approximately stationary in said vessel.

3. The method of claim 1 wherein:

said extraction section is advanced toward said occlusion device while said extraction lumen remains relatively stationary in said vessel.

4. The method of claim 1 wherein:

said supplying step occurs while the occlusion device is deflated after the intervention.