Granted Patent B2

US 12,343,485 · App. 17/382,271 · Granted Jul 1, 2025

Inventors: John A Lippert (Park City, UT); Edward J. Snyder (Park City, UT)

Assignee: SCIENTIA VASCULAR, INC.

A61M25/09041A61M25/09A61M2025/09091A61M2025/09133A61M2025/0915A61M2025/09166

Abstract

Claims (33)

1. A guidewire device comprising:

a core including a proximal section and a distal section;

an outer tube coupled to the core, wherein the distal section of the core is configured to pass into and is encompassed by the outer tube;

a distal coil encompassing part of the distal section of the core;

a proximal coil disposed proximal of the distal coil and encompassing part of the distal section of the core; and

a bushing coil disposed over at least a portion of one or both of the distal coil and the proximal coil,

wherein the proximal coil and the distal coil are each wound in a first direction, and the bushing coil is counter-wound in a second, opposite direction.

2. The guidewire device of claim 1 , wherein the outer tube and the core define an annular space between an inner surface of the outer tube and an outer surface of the distal section of the core, wherein an outer diameter of the outer tube is greater than an outer diameter of the proximal section of the core.

3. The guidewire device of claim 1 , wherein the distal coil is more radiopaque than stainless steel.

4. The device of claim 1 , wherein the proximal coil is less radiopaque than the distal coil.

5. The device of claim 1 , wherein the bushing coil extends farther proximally than the proximal coil.

6. The device of claim 1 , wherein the bushing coil has a length that is at least 60% of a length of the outer tube.

7. The device of claim 1 , wherein the bushing coil has a pitch that is smaller than that of the proximal coil and/or the distal coil.

8. The device of claim 1 , wherein the proximal coil, the distal coil, and the bushing coil fill 15% or more of the volume of the annular space.

9. The device of claim 1 , wherein an outer diameter of the outer tube is larger than an outer diameter of the proximal section of the core by 10% or more.

10. A guidewire device comprising:

a core including a proximal section and a distal section;

an outer tube coupled to the core, wherein the distal section of the core is configured to pass into and is encompassed by the outer tube;

a distal coil encompassing part of the distal section of the core;

a proximal coil disposed proximal of the distal coil and encompassing part of the distal section of the core; and

a bushing coil disposed over at least a portion of one or both of the distal coil and the proximal coil,

wherein the proximal coil and the distal coil are each wound in a first direction, and the bushing coil is counter-wound in a second, opposite direction,

wherein the outer tube and the core define an annular space between an inner surface of the outer tube and an outer surface of the distal section of the core, wherein an outer diameter of the outer tube is greater than an outer diameter of the proximal section of the core.

11. The device of claim 10 , wherein the proximal coil, the distal coil, and the bushing coil fill 15% or more of the volume of the annular space.

12. The device of claim 10 , wherein an outer diameter of the outer tube is larger than an outer diameter of the proximal section of the core by 10% or more.

13. The device of claim 10 , wherein the proximal coil and the distal coil are each wound in a first direction, while the bushing coil is counter-wound in a second, opposite direction.

14. The device of claim 10 , wherein the bushing coil extends farther proximally than the proximal coil.

15. The device of claim 1 , wherein the device has a ratio of rotational stiffness to bending stiffness of 160 m −1 ·rad −1 or greater at a location 0.5 cm from a distal end of the device.

16. The device of claim 1 , wherein the device has a ratio of rotational stiffness to bending stiffness of 80 m −1 ·rad −1 or greater at a location 1.0 cm from a distal end of the device.

17. The device of claim 1 , wherein the device has a ratio of rotational stiffness to bending stiffness of 130 m −1 ·rad −1 or greater at a location 1.5 cm from a distal end of the device.

18. The device of claim 1 , wherein the device has a ratio of rotational stiffness to bending stiffness of 50 m −1 ·rad −1 or greater at a location 2.0 cm from a distal end of the device.

19. The device of claim 1 , wherein the device has a ratio of rotational stiffness to bending stiffness of 15 m −1 ·rad −1 or greater at a location 5.0 cm from a distal end of the device.

20. The device of claim 1 , wherein the device has a ratio of rotational stiffness to bending stiffness of 8 m −1 ·rad −1 or greater at a location 8.0 cm from a distal end of the device.

Assignments (2)

Continuity (4)

References Cited (400)