Deflectable medical devices

• US 9,808,311 B2
• Filed: 03/04/2014
• Issued: 11/07/2017
• Est. Priority Date: 03/13/2013
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Wang, Huisun, Cao, Hong, Larson, Kenneth R., Nylund, Jeffrey A., Routh, Katherine S., Vetsch, James D.
• Primary Examiner(s): Hupczey, Jr., Ronald
• Application Number:
  US14/196,692
• Publication Number:
  US 20140276787A1
• Time in Patent Office: 1,344 Days
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2017/00323 Cables or rods
• CPC Class Codes: A61B 2018/00404 Blood vessels other than those in or around the heart
• CPC Class Codes: A61B 2018/00434 Neural system
• CPC Class Codes: A61B 2018/00511 Kidney
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61M 2025/015 Details of the distal fixation of the movable mechanical means
• CPC Class Codes: A61M 25/0138 having flexible regions as a result of weakened outer material, e.g. slots, slits, cuts, joints or coils
• CPC Class Codes: A61M 25/0147 with movable mechanical means, e.g. pull wires

Abstract

A deflective medical device including a catheter shaft having a distal end, and an ablation electrode disposed at the distal end of the catheter shaft. A deflection body is provided within the catheter shaft, and the deflection body includes a longitudinally extending spine. Multiple slots are formed in the deflection body, and the slots define a group of ribs. A flex member is disposed distal to the deflection body, and an intermediate region is defined between the deflection body and the flex member. A deflection mechanism is coupled to the intermediate region, which includes a retaining member, a collar, and a pull wire coupled to the collar.

Claims

1. A deflectable medical device, comprising:

a catheter shaft having a distal end;

an ablation electrode disposed at the distal end;

a deflection body including a longitudinally-extending spine and wherein a first group of slots are formed in the body and define a first group of ribs;

a flex member disposed distal to the deflection body;

an intermediate region disposed between the deflection body and the flex member, the intermediate region including a wall extending from the deflection body to the flex member, and an opening extending through the wall from an outer surface to an inner surface of the intermediate region; and

a deflection mechanism coupled to the intermediate region, the deflection mechanism including a retaining portion and a pull wire portion,

wherein the retaining portion comprises a collar configured to extend around at least a portion of the outer surface of the intermediate region.

2. The deflectable medical device of claim 1, wherein the collar is positioned adjacent to the opening in the intermediate region and the pull wire portion is disposed within the opening such that the pull wire portion extends proximally within a lumen of the deflection body.