VIBRATING CATHETER AND METHODS OF USE

• US 20140276923A1
• Filed: 03/11/2014
• Published: 09/18/2014
• Est. Priority Date: 03/12/2013
• Status: Abandoned Application

• Current Assignee: Volcano Corporation (Koninklijke Philips N.V.)
• Original Assignee: Volcano Corporation (Koninklijke Philips N.V.)
• Inventors: Miller, David G.
• Application Number:
  US14/204,382
• Publication Number:
  US 20140276923A1
• Time in Patent Office: Days
• US Class Current: 606/128
• CPC Class Codes: A61B 17/22004 using mechanical vibrations, e.g. ultrasonic shock waves A61B17/225 takes precedence
• 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 17/2202 the ultrasound transducer being inside patient's body at the distal end of the catheter
• 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: A61M 25/0102 Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

The invention provides a method of intravascular intervention that includes inserting a catheter comprising an extended body into a lumen within tissue of a patient, advancing the catheter to a treatment site, vibrating a proximal end of the catheter with a mechanical vibrator, and treating the treatment site while a distal end of the catheter is vibrating.

Claims

1. A method of intravascular intervention, the method comprising:

inserting a catheter comprising an extended body into a lumen within tissue of a patient;

advancing the catheter to a treatment site;

vibrating a proximal end of the catheter with a mechanical vibrator; and

treating the treatment site while a distal end of the catheter is vibrating.

2. The method of claim 1, wherein the mechanical vibrator comprises a linear motor.

3. The method of claim 2, wherein linear motor comprises a mass coupled to the motor by a spring.

4. The method of claim 2, wherein the linear motor comprises a pair of eccentric rotatable weights.

5. The method of claim 1, wherein the mechanical vibrator comprises a piezoelectric vibrator.

6. The method of claim 1, wherein the mechanical vibrator comprises an ultrasonic actuator.

7. The method of claim 1, wherein the mechanical vibrator comprises a non-resonant linear motor driving a mass.

8. The method of claim 1, wherein a distal portion of the guidewire comprises a low-friction surface treatment.

9. The method of claim 1, further comprising advancing a guidewire to a chronic total occlusion and advancing the catheter over the guidewire.

10. The method of claim 9, wherein the catheter comprises a balloon.

11. A device for intravascular intervention, the device comprising:

a catheter member comprising an extended body with a proximal end and a distal end;

a housing area at the proximal end; and

a mechanical vibrator coupled to the housing area.

12. The device of claim 11, wherein the mechanical vibrator comprises a linear motor.

13. The device of claim 12, wherein linear motor comprises a mass coupled to the motor by a spring.

14. The device of claim 12, wherein the linear motor comprises a pair of eccentric rotatable weights.

15. The device of claim 11, wherein the mechanical vibrator comprises a piezoelectric vibrator.

16. The device of claim 11, wherein the mechanical vibrator comprises an ultrasonic actuator.

17. The device of claim 11, wherein the mechanical vibrator comprises a non-resonant linear motor driving a mass.

18. The device of claim 11, wherein a distal portion of the catheter comprises a low-friction surface treatment.

19. The device of claim 11, further comprising a guidewire within the catheter.

20. The device of claim 19, wherein the catheter comprises a treatment comprising a balloon or a stent.