Direction reversing vascular treatment device

• US 9,375,216 B2
• Filed: 11/14/2011
• Issued: 06/28/2016
• Est. Priority Date: 11/15/2010
• Status: Active Grant

• Current Assignee: Merit Medical Systems, Inc.
• Original Assignee: Vascular Insights LLC (Merit Medical Systems, Inc.)
• Inventors: Tal, Michael G., Marano, John P.
• Primary Examiner(s): Eastwood, David C
• Assistant Examiner(s): NGUYEN, TIN DUC
• Application Number:
  US13/295,495
• Publication Number:
  US 20120130410A1
• Time in Patent Office: 1,688 Days
• Field of Search: 606/159, 606/194, 606/170, 606/180, 606/41, 606/79, 606/181, 606/200, 128/898
• US Class Current: 1/1
• CPC Class Codes: A61B 17/12013 for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/12186 liquid materials adapted to be injected
• CPC Class Codes: A61B 17/3207 Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 2017/00778 Operations on blood vessels A61B2017/22097, A61B2017/320741 take precedence
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/320733 with a flexible cutting or scraping element, e.g. with a whip-like distal filament member
• CPC Class Codes: A61B 2017/320766 eccentric

Abstract

An apparatus for performing a vascular treatment includes an intraluminal member that is controllingly moved during the vascular treatment. The intraluminal member of the vascular treatment device can be connected to a motor. The rotation direction of the intraluminal member can be reversed to reduce the incidence and duration of vein entanglement during a vascular ablation procedure. Reversal of direction could occur automatically, or in response to a sensor such as a load sensor provided as part of the motorized drive system.

Claims

1. A method of treating a vein comprising the following steps:

advancing an elongated intraluminal member from an access site and into a vein;

rotating the intraluminal member or portion thereof in a first direction with a motorized drive system coupled to the intraluminal member or portion thereof, the motorized drive system comprising a motor drive circuit and a motor; and

periodically changing the direction of rotation of the intraluminal member or portion thereof to perform rotational oscillation by periodically changing the direction of rotation of the motorized drive system,

wherein the periodic changing of the direction of rotation of the intraluminal member occurs at random time intervals, and

wherein the rotational oscillation of the intraluminal member or portion thereof damages an inner wall of the vein, and inhibits entanglement of the intraluminal member or portion thereof with the inner wall of the vein.

2. The method of claim 1, wherein the direction of rotation changes when a load threshold is met or exceeded.

3. The method of claim 1, wherein the motor comprises a reversible motor.

4. The method of claim 1, wherein the drive system comprises a kinematic chain.

5. The method of claim 1, wherein the drive system comprises a gearbox.

6. The method of claim 3, further comprising periodically reversing a rotation direction of the reversible motor.

7. The method of claim 6, further comprising programming a motor control and the motor drive circuit to perform the periodic reversal of the rotation direction of the reversible motor.

8. The method of claim 1, further comprising injecting sclerosant into the vein and onto the inner wall of the vein.

9. The method of claim 1, wherein a distal end of the intraluminal member comprises a vein wall disruptor.

10. A method of treating a vein comprising the following steps:

advancing an elongated intraluminal member from an access site and into a vein;

rotating the intraluminal member or portion thereof in a first direction with a motorized drive system coupled to the intraluminal member or portion thereof, the motorized drive system comprising a motor drive circuit and a motor; and

periodically changing the direction of rotation of the intraluminal member or portion thereof to perform rotational oscillation by periodically changing the direction of rotation of the motorized drive system,

wherein the periodic changing of the direction of rotation of the intraluminal member occurs for every full rotation of the intraluminal member or portion thereof, and

wherein the rotational oscillation of the intraluminal member or portion thereof damages an inner wall of the vein, and inhibits entanglement of the intraluminal member or portion thereof with the inner wall of the vein.

11. The method of claim 10, wherein the periodic changing of the direction of rotation of the intraluminal member occurs after a set number of rotations or fraction thereof.

12. The method of claim 10, wherein the motor comprises a reversible motor.

13. The method of claim 10, wherein the drive system comprises a kinematic chain.

14. The method of claim 10, wherein the drive system comprises a gearbox.

15. The method of claim 12, further comprising periodically reversing a rotation direction of the reversible motor.

16. The method of claim 15, further comprising programming a motor control and the motor drive circuit to perform the periodic reversal of the rotation direction of the reversible motor.

17. The method of claim 10, further comprising injecting sclerosant into the vein and onto the inner wall of the vein.

18. The method of claim 10, wherein a distal end of the intraluminal member comprises a vein wall disruptor.

19. A method of treating a vein comprising the following steps:

advancing an elongated intraluminal member from an access site and into a vein;

rotating the intraluminal member or portion thereof in a first direction with a motorized drive system coupled to the intraluminal member or portion thereof, the motorized drive system comprising a motor drive circuit and a motor; and

periodically changing the direction of rotation of the intraluminal member or portion thereof to perform rotational oscillation by periodically changing the direction of rotation of the motorized drive system,

wherein the periodic changing of the direction of rotation of the intraluminal member occurs at defined time intervals, and

wherein the rotational oscillation of the intraluminal member or portion thereof damages an inner wall of the vein, and inhibits entanglement of the intraluminal member or portion thereof with the inner wall of the vein.

20. The method of claim 19, wherein the motor comprises a reversible motor.

21. The method of claim 19, wherein the drive system comprises a kinematic chain.

22. The method of claim 19, wherein the drive system comprises a gearbox.

23. The method of claim 20, further comprising periodically reversing a rotation direction of the reversible motor.

24. The method of claim 23, further comprising programming a motor control and the motor drive circuit to perform the periodic reversal of the rotation direction of the reversible motor.

25. The method of claim 19, further comprising injecting sclerosant into the vein and onto the inner wall of the vein.

26. The method of claim 19, wherein a distal end of the intraluminal member comprises a vein wall disruptor.