IP Library › Granted Patent US 12,310,567
Granted Patent B2
US 12,310,567 · App. 17/752,600 · Granted May 27, 2025

Micro-fabricated medical device having a non-helical cut arrangement

Inventors: Clark C. Davis (Holladay, UT); John A. Lippert (Park City, UT)
Assignee: SCIENTIA VASCULAR, INC.
A61B17/00234A61B2017/00309A61M2025/0042A61M25/0054A61M2025/09091
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Quick Facts
Patent No.
US 12,310,567
App. No.
17/752,600
Granted
May 27, 2025
Kind
B2
Abstract

The present disclosure relates to interventional devices such as catheters and guidewire devices having micro-fabricated features for providing flexibility while maintaining good torquability. An interventional device includes an elongated member having an arrangement of fenestrations which define a plurality of axially extending beams coupling a plurality of circumferentially extending rings. The fenestrations are arranged so that the resulting beams form a distributed, non-helical and non-linear pattern along the length of the elongated member. The pattern of fenestrations thereby minimizes or eliminates preferred bending axes.

Claims (26)

1. An interventional device, comprising:

an elongated member having a wall and an interior lumen, the elongated member including a plurality of fenestrations extending through the wall and exposing the lumen, the plurality of fenestrations defining a plurality of axially extending beams and a plurality of circumferentially extending rings arranged in an imperfect ramp pattern,

wherein no set of three successive segments within the imperfect ramp pattern are spaced according to the same rotational offset, and

wherein the imperfect ramp pattern includes an imperfect rotational offset from one segment to the next, the imperfect rotational offset being equal to a constant value±a variable modifying value,

wherein the elongated member is formed from a succession of segments, each segment including a first pair of circumferentially opposed beams and a second pair of circumferentially opposed beams which are rotationally offset by about 90 degrees from the first pair of beams.

2. The device of claim 1 , wherein the interventional device is a micro-catheter device or a guidewire device.

3. The device of claim 2 , wherein the interventional device is a guidewire that includes a core, and wherein the elongated member is formed as a tube structure coupled to the core such that a distal section of the core passes into at least a portion of the tube structure.

4. The device of claim 3 , further comprising one or more coils disposed within the tube structure so as to be positioned between an outer surface of the distal section of the core and an inner surface of the tube structure.

5. The device of claim 3 , wherein the core is formed from stainless steel or nitinol.

6. The device of claim 3 , wherein the tube structure is formed from nitinol.

7. The device of claim 1 , wherein the fenestrations are arranged in one or more of a one-beam, two-beam, or three-beam pattern.

8. The device of claim 1 , wherein the constant value is about 90 degrees.

9. The device of claim 1 , wherein the constant value ranges from 81 degrees to 99 degrees.

10. The device of claim 1 , wherein the variable modifying value ranges from 2.5 to 30 degrees.

11. The device of claim 1 , wherein the variable modifying value ranges from 5 to 15 degrees.

12. An interventional device, comprising:

an elongated member having a wall and an interior lumen, the elongated member including a plurality of fenestrations extending through the wall and exposing the lumen, the plurality of fenestrations defining a plurality of axially extending beams and a plurality of circumferentially extending rings arranged in an imperfect ramp pattern,

wherein no set of three successive segments or beam pairs within the imperfect ramp pattern are spaced according to the same rotational offset,

wherein the imperfect ramp pattern includes an imperfect rotational offset from one segment to the next or from one beam pair to the next, the imperfect rotational offset being equal to a constant value±a variable modifying value,

wherein the constant value ranges from 81 degrees to 99 degrees, and

wherein the variable modifying value ranges from 2.5 to 30 degrees.

13. The device of claim 12 , wherein the device is a micro-catheter device or a guidewire device.

14. The device of claim 13 , wherein the interventional device is a guidewire that includes a core, and wherein the elongated member is formed as a tube structure coupled to the core such that a distal section of the core passes into at least a portion of the tube structure.

15. The device of claim 14 , further comprising one or more coils disposed within the tube structure so as to be positioned between an outer surface of the distal section of the core and an inner surface of the tube structure.

16. The device of claim 14 , wherein the core is formed from stainless steel or nitinol.

17. The device of claim 14 , wherein the tube structure is formed from nitinol.

Assignments (2)
CHANGE OF NAME Recorded Jun 23, 2022
From: SCIENTIA VASCULAR, LLC
To: SCIENTIA VASCULAR, INC.
Reel/Frame 060439/0554 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 24, 2022
From: DAVIS, CLARK C.; LIPPERT, JOHN A.
To: SCIENTIA VASCULAR, LLC
Reel/Frame 060005/0981 →
Continuity (4)
Division 16616139
Provisional Application 62595425 · Dec 6, 2017
Provisional Application 62511605 · May 26, 2017
Related Publication 20220280147A1 · Sep 8, 2022
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