Sclerotherapy catheter with lumen having wire rotated by motor and simultaneous withdrawal from vein

• US 9,585,667 B2
• Filed: 07/29/2011
• Issued: 03/07/2017
• 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. Jr.
• Primary Examiner(s): Bosworth, Kami A
• Assistant Examiner(s): Engel, Matthew A
• Application Number:
  US13/194,253
• Publication Number:
  US 20120130415A1
• Time in Patent Office: 2,048 Days
• Field of Search: 604/192, 604506-507, 604/131, 60416401-16413, 60416501-16504, 604/528
• 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

Abstract

An apparatus for performing a vascular treatment. In some embodiments, the apparatus comprises a vascular therapy device comprising a vascular treatment device and a feeder. The vascular treatment device can connect to a wire configured for use in vascular treatment. The vascular treatment device can rotate the wire. The feeder can be configured for controller the longitudinal translation of the wire. The feeder and the vascular treatment device can be independently or combinedly controlled.

Claims

1. An apparatus for occluding a vein, comprising:

an elongated intraluminal member shaped and dimensioned for passage through blood vessels of a subject, the intraluminal member having a proximal end and a distal end, the intraluminal member comprising;

a sheath defining a lumen extending from the proximal end to the distal end, and

a wire disposed within the lumen extending from the proximal end to the distal end, the wire being rotatable within the sheath;

a first motor coupled to the wire, the first motor configured to rotate the wire within the sheath;

an elongate track extending from a first end to a second end;

a belt coupled to the intraluminal member, the belt extending along the track from the first end to the second end; and

a second motor coupled to the belt, the second motor configured to drive the belt such that the intraluminal member is withdrawn simultaneously with the first motor rotating the wire within the sheath.

2. The apparatus of claim 1, wherein the first motor is configured to rotate the wire at a rate of approximately 500-4,000 RPM.

3. The apparatus of claim 1, further comprising a loop and a hook, wherein one of the loop and the hook is coupled to the belt and the other of the loop and the hook is coupled to the intraluminal member.

4. The apparatus of claim 1, wherein the track comprises a U-shaped elongate member that extends from the first end to the second end of the track, wherein the belt runs along a bottom of the elongate member.

5. The apparatus of claim 1, wherein the track comprises at least one roller, wherein the at least one roller is coupled to the second motor and to the belt, and wherein the at least one roller is driven by the second motor.

6. An apparatus for occluding a vein, comprising:

an elongated intraluminal member shaped and dimensioned for passage through blood vessels of a subject, the intraluminal member extending from a proximal end to a distal end in a first direction, the intraluminal member comprising;

a sheath defining a lumen extending from the proximal end to the distal end, and

a wire disposed within the lumen extending from the proximal end to the distal end, the wire being rotatable within the sheath;

a fluid channel configured to deliver a fluid to the distal end of the elongated intraluminal member;

a first motor coupled to the wire, the first motor configured to rotate the wire within the sheath;

a roller that contacts the intraluminal member, the roller configured to rotate about a rotational axis that extends in a second direction, the second direction being substantially perpendicular to the first direction; and

a second motor coupled to the roller, the second motor configured to drive the roller about the rotational axis such that the intraluminal member is withdrawn in the first direction simultaneously with the first motor rotating the wire within the sheath.

7. The apparatus of claim 6, wherein the second motor is configured to withdraw the intraluminal member at a variable rate of speed.

8. The apparatus of claim 7, wherein the second motor is configured to increase the rate of withdrawal of the intraluminal member as the intraluminal member is being withdrawn.

9. The apparatus of claim 7, wherein the second motor is configured to decrease the rate of withdrawal of the intraluminal member as the intraluminal member is being withdrawn.

10. The apparatus of claim 7, wherein the second motor is configured to withdraw the intraluminal member at a rate of approximately 1-4 mm per second.

11. The apparatus of claim 6, wherein the first motor is configured to rotate the wire at a rate of approximately 500-4,000 RPM.

12. The apparatus of claim 6, wherein the roller is a first roller and the rotational axis is a first rotational axis, the apparatus further comprising a second roller configured to contact the intraluminal member, the second roller further configured to rotate about a second rotational axis that extends in the second direction, the second rotational axis being substantially parallel to the first rotational axis.

13. The apparatus of claim 12, wherein the first roller and the second roller are positioned such that a portion of the intraluminal member is disposed between the first roller and the second roller.

14. The apparatus of claim 13, wherein the first roller and the second roller generate compressive forces on the intraluminal member.

15. The apparatus of claim 14, wherein the compressive forces inhibit the rotation of the wire within the sheath.

16. The apparatus of claim 14, wherein each of the first roller and the second roller comprises a compressible material.

17. A method for occluding a vein by damaging a vein vessel wall and applying a liquid, comprising the following steps:

advancing an elongated intraluminal member into the vein, the intraluminal member comprising a sheath defining a lumen extending from a proximal end to a distal end in a first direction, and a wire disposed within the lumen extending from the proximal end to the distal end;

rotating the wire within the sheath using a first motor, the rotating of the wire causing damage to the vein vessel wall;

simultaneously with the rotating step, withdrawing the intraluminal member using a second motor, the second motor coupled to a feeder selected from the group consisting of;

a roller that contacts the intraluminal member, the roller configured to rotate about a rotational axis that extends in a second direction, the second direction being substantially perpendicular to the first direction, the second motor configured to drive the roller about the rotational axis such that the intraluminal member is withdrawn in the first direction simultaneously with the first motor rotating the wire within the sheath, and

a belt coupled to the intraluminal member, the belt extending along a track, the track extending from a first end to a second end, the second motor configured to drive the belt such that the intraluminal member is withdrawn simultaneously with the first motor rotating the wire within the sheath; and

injecting the liquid into the vein.

18. The method of claim 17, wherein the withdrawing step includes withdrawing the intraluminal member at a non-constant rate.

19. The method of claim 18, wherein the withdrawing step includes increasing the rate of withdrawal of the intraluminal member.

20. The method of claim 18, wherein the withdrawing step includes decreasing the rate of withdrawal of the intraluminal member.

21. The method of claim 17, wherein the withdrawing step includes withdrawing the intraluminal member at a rate of approximately 1-4 mm per second.

22. The method of claim 17, wherein the rotating step includes rotating the wire at a rate of approximately 500-4,000 RPM.