EMBOLECTOMY DEVICE

• US 20110218560A1
• Filed: 05/18/2011
• Published: 09/08/2011
• Est. Priority Date: 09/17/2003
• Status: Abandoned Application

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Stryker Corporation, Stryker Nv Operations Limited (Stryker Corporation)
• Inventors: Ramzipoor, Kamal, Nair, Ajitkumar B., Pham, Pete Phong, Parikh, Riten, Bashiri, Mehran, Huffmaster, Andrew
• Application Number:
  US13/110,786
• Publication Number:
  US 20110218560A1
• Time in Patent Office: Days
• US Class Current: 606/159
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61M 2025/0004 having two or more concentrically arranged tubes for forming a concentric catheter system
• CPC Class Codes: A61M 25/0069 Tip not integral with tube

Abstract

An embodiment is a catheter comprising a first elongate shaft having a proximal end, a distal end and a first lumen therethrough, a wire having a proximal end and a distal end at least partially disposed in the first elongate shaft, the distal end extending distally from the first elongate shaft, and a motion control apparatus connected to the proximal end of the wire, further comprising a device attached to the distal end of the wire for changing the shape of an embolus, wherein the device is configured to change the shape of the embolus to unclog a distal catheter lumen.

Claims

1. An embolus treatment catheter, comprising:

an elongate shaft having a proximal end and a distal end, the shaft comprising first and second, non-coaxial elongate lumens extending therethrough, the lumens having open distal ends;

a wire at least partially disposed in the first elongate lumen, the wire having a proximal end and a distal end, the distal end of the wire extending distally from the first elongate lumen;

a vacuum source fluidly connected to the second elongate lumen at the proximal end of the elongate shaft; and

a motion control apparatus connected to the proximal end of the wire.

2. The catheter of claim 1, wherein the motion control apparatus in configured to impart a vibrating motion to the wire.

3. The catheter of claim 2, wherein the vibrating motion has a frequency less than about 20 kHz.

4. The catheter of claim 3, wherein the vibrating motion has a frequency of between about 1 Hz and about 150 Hz.

5. The catheter of claim 2, wherein the vibrating motion is axial.

6. The catheter of claim 1, further comprising a distal device attached to the distal end of the wire and configured for changing the shape of an embolus.

7. The catheter of claim 6, wherein the distal device is configured to fragment the embolus.

8. The catheter of claim 6, wherein the distal device is a wire having an arcuate shape.

9. The catheter of claim 6, wherein the distal device is a wire having a zigzag shape.

10. The catheter of claim 6, wherein the distal device is a wire loop.

11. The catheter of claim 6, wherein the distal device has a working range of about 20 mm proximally and about 100 mm distally.

12. The catheter of claim 11, wherein the distal device has a working range of about 2 mm proximally and about 15 mm distally.

13. The catheter of claim 1, wherein at least a portion of the distal end of the elongate shaft is beveled.

14. The catheter of claim 1, the elongate shaft further comprising a third elongate lumen having an open distal end, and a fluid source fluidly connected to the third lumen at the proximal end of the elongate shaft.

15. A method of changing the shape of an embolus, comprising:

inserting the embolus treatment catheter of claim 1 into a blood vessel;

positioning a distal end of the catheter proximate an embolus;

manipulating the wire to thereby contact and change the shape of the embolus; and

operating the vacuum source to thereby urge the embolus into the second elongate lumen.

16. The method of claim 15, wherein manipulating the wire comprises operating the motion control apparatus to impart a vibrating motion to a distal portion of the wire.

17. The method of claim 16, wherein the vibrating motion has a frequency of less than about 20 kHz.

18. The method of claim 17, wherein the vibrating motion imparted has a frequency with the range of about 1 Hz to 150 Hz.

19. The method of claim 16, wherein the vibrating motion is axial.