Guidewire for crossing occlusions or stenoses

• US 8,043,314 B2
• Filed: 10/27/2009
• Issued: 10/25/2011
• Est. Priority Date: 04/06/2000
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Revascular Therapeutics Inc. (Boston Scientific Corporation)
• Inventors: Sudaria, Rudolfo, Chechelski, Victor, Noriega, Gerardo V.
• Primary Examiner(s): Nguyen; Victor
• Application Number:
  US12/606,931
• Publication Number:
  US 20100049169A1
• Time in Patent Office: 728 Days
• Field of Search: 606/108, 606/159, 606/167, 606/170, 606/171, 606/113, 606/114, 606/194, 600/585, 604/508, 604/523, 604/528
• US Class Current: 606/159
• CPC Class Codes: A61B 17/3207 Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016
• 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 17/3421 Cannulas
• CPC Class Codes: A61B 17/50 Instruments, other than pincettes or toothpicks, for removing foreign bodies from the human body locating otherwise A61B5/06; locating by radiation A61B6/00; removing calculi A61B17/22; from the eyes A61F9/00709
• CPC Class Codes: A61B 2017/22042 Details of the tip of the guide wire
• CPC Class Codes: A61B 2017/22044 with a pointed tip
• CPC Class Codes: A61B 2017/22069 Immobilising; Stabilising
• CPC Class Codes: A61B 2017/22077 with a part piercing the tissue A61B2017/22044 takes precedence
• CPC Class Codes: A61B 2017/320004 abrasive

Abstract

Systems and methods for crossing stenosis, partial occlusions, or complete occlusions within a body lumen. The systems generally include an elongate member such as a hollow guidewire that houses a rotatable and translatable drive shaft. The drive shaft typically has a distal portion that is advanced to create a path in the occlusive material that is large enough to allow the hollow guidewire to cross the occlusive material.

Claims

1. A guidewire system for passing through a stenosis in a blood vessel, said guidewire comprising:

a hollow body including a coil and having a proximal end, a distal end, and an axial lumen therethrough from the proximal end of the hollow body to a distal opening at the distal end of the hollow body;

a reinforcing wire connected to an axial inner surface of the coil, wherein the reinforcing wire is reshapeable allowing a user to deflect the distal end without impeding the lumen through the hollow body; and

a rotatable drive shaft within the axial lumen of the hollow body and exiting through the distal opening at the distal end of the hollow body to a distal tip sized to create a path radius at least as large as a radius of the distal end of the hollow body.

2. A guidewire system as in claim 1, wherein the reinforcing wire is a flattened strip of stainless steel.

3. A guidewire system as in claim 1, wherein the reinforcing wire is soldered to the coil.

4. A guidewire system, as in claim 3, wherein the reinforcing wire is soldered to a distal end of the coil.

5. A guidewire system, as in claim 1, wherein the coil extends the entire length of the hollow body.

6. A guidewire system as in claim 5, wherein the coil is a first coil and the hollow body comprises a second coil proximal of the first coil.