Bond between components of a medical device

• US 8,940,014 B2
• Filed: 11/14/2012
• Issued: 01/27/2015
• Est. Priority Date: 11/15/2011
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Gamarra, Randy S., Tung, David S., Sutton, Benjamin, Ino, Takashi, Wallin, Joshua, Brandt, Brian D.
• Primary Examiner(s): KRUPICKA, ADAM C
• Application Number:
  US13/676,653
• Publication Number:
  US 20130123795A1
• Time in Patent Office: 804 Days
• Field of Search: 606/207
• US Class Current: 606/207
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61M 25/0009 Making of catheters or other medical or surgical tubes
• CPC Class Codes: A61M 25/0026 Multi-lumen catheters with stationary elements catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175
• CPC Class Codes: A61M 25/09016 with mandrils
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

An elongated member and a method of manufacturing an elongated member may include first, second, and third elongated rod mandrels. The first, second, and third elongated rod mandrels may be fixed together at predetermined proximal and distal locations and at a ball tip. The first, second, and third rod mandrels may be disposed within a tubular coupling element and fixed to the tubular coupling element at the ball tip. The tubular coupling element may be placed into abutment with and fixed to the distal end of an elongated shaft.

Claims

1. An elongated member having a central longitudinal axis, comprising:

a first elongated rod mandrel including a first flattened distal portion;

a second elongated rod mandrel including a second flattened distal portion;

a third elongated rod mandrel including a third flattened distal portion;

wherein the first, second, and third elongated rod mandrels are fixed together such that the first, second, and third flattened distal portions are arranged perpendicular to radii extending out from the central longitudinal axis at 120-degree radial intervals;

a coupling element having a lumen therethrough; and

an elongate shaft;

wherein the first, second, and third elongated rod mandrels are disposed within the lumen;

wherein the coupling element fixes the first, second, and third elongated rod mandrels to the elongate shaft;

wherein the coupling element includes a proximal portion having a first outer diameter and distal portion having a second outer diameter greater than the first outer diameter;

wherein the proximal portion of the coupling element is inserted into a distal end of the elongate shaft such that the distal portion of the coupling element abuts the distal end of the elongate shaft to form a joint.

2. The elongated member of claim 1, wherein the coupling element and the elongate shaft are coaxial with the central longitudinal axis.

3. The elongated member of claim 1, wherein the joint is laser welded about its entire circumference.

4. The elongated member of claim 1, wherein the second outer diameter is substantially equivalent to an outer diameter of the distal end of the elongate shaft.

5. The elongated member of claim 1, wherein the first, second, and third elongated rod mandrels are welded together at a proximal end to form a ball tip.

6. The elongated member of claim 5, wherein the first, second, and third elongated rod mandrels are disposed within the lumen of the coupling element such that a proximal end of the coupling element abuts the ball tip to form a seam, and the seam is laser welded about its entire circumference.