IP Library › Granted Patent US 12,194,199
Granted Patent B2
US 12,194,199 · App. 18/498,803 · Granted Jan 14, 2025

Intravascular devices

Inventors: Hancun Chen (San Ramon, CA); Andrew S. Lee (San Jose, CA)
Assignees: Stryker Corporation; Stryker European Operations Limited
A61L31/022A61L31/14A61B17/1214A61F2002/016A61F2002/068A61F2/90A61F2/95C22C5/04C22C27/04
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Quick Facts
Patent No.
US 12,194,199
App. No.
18/498,803
Granted
Jan 14, 2025
Kind
B2
Abstract

An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.

Claims (24)

1. An alloy comprising:

platinum (Pt) and tungsten (W);

wherein the platinum (Pt) and the tungsten (W) together constitute a majority of the alloy by weight;

wherein a percentage of the tungsten (W) in the alloy is equal to or greater than 10% by weight and is less than 20% by weight;

wherein the alloy further comprises zirconium (Zr), and a percentage of the (Zr) in the alloy is equal to or less than 5% by weight; and

wherein the alloy has a Young's modulus that is 30 Msi or higher.

2. The alloy of claim 1 , wherein the alloy has a magnetic susceptibility that is anywhere between 10 ppm to 300 ppm.

3. The alloy claim 1 , wherein the alloy has a greater ultimate tensile strength, a greater Young's modulus, and a lesser magnetic susceptibility, than a platinum-tungsten alloy having a percentage of tungsten that is 8% by weight.

4. The alloy of claim 1 , wherein alloy has an ultimate tensile strength that is greater than an ultimate tensile strength of a platinum-tungsten alloy having a percentage of tungsten that is 8% by weight.

5. The alloy of claim 1 , wherein alloy has a Young's modulus that is greater than a Young's modulus of a platinum-tungsten alloy having a percentage of tungsten that is 8% by weight.

6. The alloy of claim 1 , wherein the alloy has a magnetic susceptibility that is less than a magnetic susceptibility of a platinum-tungsten alloy having a percentage of tungsten that is 8% by weight.

7. A component of a medical device comprising the alloy of claim 1 .

8. An implant comprising the alloy of claim 1 .

9. A catheter comprising the alloy of claim 1 .

10. A guidewire comprising the alloy of claim 1 .

11. A delivery wire comprising the alloy of claim 1 .

12. A marker comprising the alloy of claim 1 .

13. An elongate member comprising the alloy of claim 1 .

14. The elongate member of claim 13 , wherein the elongate member is part of a braid.

15. The elongate member of claim 13 , wherein the elongate member has a coil configuration.

16. The elongate member of claim 13 , wherein the elongate member is a wire.

17. The elongate member of claim 16 , wherein the wire has a diameter between 0.0005″ to 0.005″.

18. The alloy of claim 1 , wherein a percentage of the platinum (Pt) and tungsten (W) is at least 95% by weight.

19. The alloy of claim 1 , wherein the Young's modulus of the alloy is 36 Msi or higher.

Assignments (2)
CHANGE OF ADDRESS Recorded Dec 18, 2024
From: STRYKER CORPORATION
To: STRYKER CORPORATION
Reel/Frame 069737/0184 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 31, 2023
From: CHEN, HANCUN; LEE, ANDREW S.
To: STRYKER CORPORATION; STRYKER EUROPEAN OPERATIONS LIMITED
Reel/Frame 065409/0414 →
Continuity (5)
Continuation 18315502 · May 11, 2023
Continuation 18176435 · Feb 28, 2023
Continuation 16872124 · May 11, 2020
Continuation In Part 16567845 · Sep 11, 2019
Related Publication 20240058510A1 · Feb 22, 2024
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