Bond between components of a medical device

• US 10,478,300 B2
• Filed: 04/10/2017
• Issued: 11/19/2019
• 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): Templeton, Christopher L
• Application Number:
  US15/482,988
• Publication Number:
  US 20170224485A1
• Time in Patent Office: Days
• 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 comprising:

a first elongated rod;

a second elongated rod;

a third elongated rod mandrel;

wherein the first, second, and third elongated rods each include a proximal end and a flattened distal portion;

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

a coupling element having a lumen and a proximal end;

wherein the first, second, and third elongated rods are disposed within the lumen and are fixedly attached to the coupling element;

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; and

an elongate shaft having a distal lumen

wherein the proximal portion of the coupling element is inserted into the distal lumen of the elongate shaft such that the distal portion of the coupling element abuts the distal end of the elongate shaft and is fixedly attached thereto.

2. The elongated member of claim 1, wherein the distal portion of coupling element is welded to the distal end of the elongate shaft about an entire circumference of the coupling element.

3. 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.

4. The elongated member of claim 1, wherein the first, second, and third elongated rods are welded together at their proximal ends to form a ball tip.

5. The elongated member of claim 4, wherein the first, second, and third elongated rods are disposed within the lumen of the coupling element such that the proximal end of the coupling element abuts the ball tip to form a seam, and the seam is welded about an entire circumference.

6. The elongated member of claim 1, wherein the first, second, and third elongated rods are mutually fixedly attached to each other at a first point located between their respective flattened distal portions and the coupling element.

7. The elongated member of claim 6, wherein the first, second, and third elongated rods are welded to each other at the first point.

8. The elongated member of claim 6, wherein the first, second, and third elongated rods are mutually fixedly attached to each other at a second point located between the first point and the coupling element.

9. The elongated member of claim 8, wherein the first, second, and third elongated rods are welded to each other at the second point.

10. The elongated member of claim 1, wherein the first, second, and third elongated rods are made of a first metallic material.

11. The elongated member of claim 10, wherein the first metallic material is selected from the group consisting of UNS:

R30003, nickel-titanium alloy, and stainless steel.

12. The elongated member of claim 1, wherein the coupling element is made of a second metallic material.

13. The elongated member of claim 12, wherein the second metallic material is selected from the group consisting of UNS:

R30003, nickel-titanium alloy, and stainless steel.

14. The elongated member of claim 1, wherein the elongate shaft is made of a third metallic material.

15. The elongated member of claim 14, wherein the third metallic material is selected from the group consisting of UNS:

R30003, nickel-titanium alloy, and stainless steel.