METHOD AND DEVICE FOR FILTERING BODY FLUID

• US 20110208234A1
• Filed: 05/04/2011
• Published: 08/25/2011
• Est. Priority Date: 07/08/1994
• Status: Abandoned Application

• Current Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Mazzocchi, Rudy, Claude, Timothy, Segermark, James
• Application Number:
  US13/100,880
• Publication Number:
  US 20110208234A1
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12099 characterised by the location of the occluder
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12177 comprising additional materials, e.g. thrombogenic, having filaments, having fibers or being coated
• 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 2017/00526 Methods of manufacturing
• 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 2002/016 made from wire-like elements
• 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 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: B21F 45/008 of medical instruments, e.g. stents, corneal rings medical science A61

Abstract

Medical devices for filtering fluids flowing through a lumen and a method of forming medical devices. The devices can be used in vascular channels, urinary tracts, biliary ducts and the like, and filter emboli and other debris generated at a treatment site.

Claims

1. A system for filtering emboli at a desired site from blood flowing through a lumen defined by the wall of a vessel comprising:

a guidewire;

a filter carried by the guidewire, the filter being expandable from a delivery configuration to a deployed configuration and being collapsible from the deployed configuration to a retrieval configuration; and

a balloon catheter having a lumen configured for delivery of the filter carried by the guidewire in the delivery configuration to the desired site in the vessel, and having a distal portion configured for retrieval of the filter carried by the guidewire from the vessel in the retrieval configuration.

2. The system of claim 1 wherein the filter comprises nitinol.

3. The system of claim 1 wherein the filter has a shape in the expanded configuration which defines a cavity having a proximally facing opening

4. The system of claim 1 wherein the filter is mounted on a distal region of the guidewire.

5. The system of claim 1 wherein the guidewire comprises a solid material.

6. The system of claim 1 wherein the guidewire comprises metal.

7. The system of claim 1 wherein the guidewire comprises a tapered portion.