Apparatus and method for an ultrasonic medical device for tissue remodeling

• US 20040158150A1
• Filed: 02/02/2004
• Published: 08/12/2004
• Est. Priority Date: 10/05/1999
• Status: Abandoned Application

• Current Assignee: Cybersonics, Inc
• Original Assignee: OmniSonics Medical Technologies, Inc.
• Inventors: Rabiner, Robert, Hare, Bradley A.
• Application Number:
  US10/770,321
• Publication Number:
  US 20040158150A1
• Time in Patent Office: Days
• US Class Current: 600/439
• CPC Class Codes: A61B 2017/00137 Details of operation mode
• CPC Class Codes: A61B 2017/00274 Prostate operation, e.g. prostatectomy, turp, bhp treatment
• CPC Class Codes: A61B 2017/22007 Cavitation or pseudocavitation, i.e. creation of gas bubbles generating a secondary shock wave when collapsing
• CPC Class Codes: A61B 2017/22008 used or promoted
• CPC Class Codes: A61B 2017/320069 for ablating tissue
• CPC Class Codes: A61B 2017/32007 with suction or vacuum means
• CPC Class Codes: A61B 2017/320071 with articulating means for working tip
• CPC Class Codes: A61B 2017/320084 Irrigation sleeves
• CPC Class Codes: A61B 2017/320089 node location
• CPC Class Codes: A61B 2018/00547 Prostate
• CPC Class Codes: A61N 2007/0008 Destruction of fat cells
• CPC Class Codes: A61N 7/022 intracavitary

Abstract

A method for destructing, reducing or removing mammalian tissue with an ultrasonic device is disclosed, comprising contacting the tissue with a transverse mode ultrasonic probe, and transmitting ultrasonic energy to the probe, until the tissue is fragmented by emulsification. The probe can be used with acoustic and/or aspirations sheaths to enhance destruction and removal of an occlusion and in combination with an imaging device to effect remodeling of human tissue in medical and cosmetic surgical procedures.

Claims

1. An ultrasonic medical device for treating tissue comprising:

an ultrasonic probe having a proximal end, a distal end and a longitudinal axis between the proximal end and the distal end; and

a diameter of the ultrasonic probe that is tapered from the proximal end of the ultrasonic probe to the distal end of the ultrasonic probe,

wherein the ultrasonic probe operates in a transverse mode of vibration with a transverse ultrasonic vibration along at least a portion of the longitudinal axis of the ultrasonic probe that produces a plurality of transverse vibration anti-nodes along at least a portion of the longitudinal axis of the ultrasonic probe.

2. The ultrasonic medical device of claim 1 wherein more than one of the plurality of transverse vibration anti-nodes are in communication with the tissue.

3. The ultrasonic medical device of claim 1 wherein the transverse ultrasonic vibration generates cavitation along at least a portion of the longitudinal axis of the ultrasonic probe to treat the tissue.

4. The ultrasonic medical device of claim 1 wherein the transverse mode of vibration of the ultrasonic probe expands a tissue coverage area of the ultrasonic probe to treat the tissue.

5. The ultrasonic medical device of claim 1 further comprising an aspiration sheath surrounding at least a portion of the ultrasonic probe.

6. The ultrasonic medical device of claim 5 further comprising a rigid sheath surrounding at least a portion of the aspiration sheath and surrounding at least a portion of the ultrasonic probe.

7. The ultrasonic medical device of claim 5 wherein the ultrasonic probe is axially movably mounted within the aspiration sheath.

8. The ultrasonic medical device of claim 1 wherein the ultrasonic probe comprises one or more aspiration channels along an outer surface of the ultrasonic probe.

9. The ultrasonic medical device of claim 1 wherein the ultrasonic probe comprises an at least one irrigation passage along at least a portion of the longitudinal axis of the ultrasonic probe, the irrigation passage terminating in one or more irrigation ports at the distal end of the probe.

10. The ultrasonic medical device of claim 1 wherein the ultrasonic probe comprises a flexibility that allows the ultrasonic probe to be bent and articulated.

11. The ultrasonic medical device of claim 1 wherein the ultrasonic probe comprises a titanium alloy.

12. The ultrasonic medical device of claim 1 wherein the tissue is adipose tissue.

13. The ultrasonic medical device of claim 1 wherein the tissue is a benign cyst or cellular growth in a human breast.

14. The ultrasonic medical device of claim 1 wherein the tissue is part of the eyelid or ocular sac.

15. An ultrasonic medical device comprising:

a probe having a diameter that is tapered from a proximal end of the probe to a distal end of the probe; and

a longitudinal axis of the probe located between the proximal end and the distal end of the probe,

wherein the probe is vibrated in a direction transverse to the longitudinal axis of the probe, creating a plurality of transverse vibration anti-nodes along at least a portion of the longitudinal axis of the probe and generating cavitation along at least a portion of the longitudinal axis of the probe to treat a tissue.

16. The ultrasonic medical device of claim 15 wherein the probe comprises one or more aspiration channels along an outer surface of the probe.

17. The ultrasonic medical device of claim 15 wherein the probe comprises an at least one irrigation passage along at least a portion of the longitudinal axis of the probe, the irrigation passage terminating in one or more irrigation ports at the distal end of the probe.

18. The ultrasonic medical device of claim 15 wherein the probe comprises a titanium alloy.

19. The ultrasonic medical device of claim 15 wherein the ultrasonic probe comprises a material having a flexibility allowing the probe to be bent and articulated.

20. The ultrasonic medical device of claim 15 wherein the probe supports a transverse ultrasonic vibration along at least a portion of the longitudinal axis of the probe.

21. The ultrasonic medical device of claim 15 wherein the probe is axially movable within an articulation sheath surrounding at least a portion of the longitudinal axis of the probe.

22. A method of remodeling a tissue comprising:

providing a flexible probe having a proximal end, a distal end and a longitudinal axis between the proximal end and the distal end;

moving the flexible probe to engage the tissue;

activating an ultrasonic vibration generator to produce a transverse ultrasonic vibration along at least a portion of a longitudinal axis of the flexible probe; and

sweeping the flexible probe through the tissue to remove the tissue in areas adjacent to a plurality of transverse vibration anti-nodes generated along at least a portion of the longitudinal axis of the flexible probe.

23. The method of claim 22 wherein the tissue is removed through a process of cavitation generated from the transverse ultrasonic vibration of the flexible probe.

24. The method of claim 22 further comprising surrounding at least a portion of the ultrasonic probe with an aspiration sheath.

25. The method of claim 22 further comprising moving the flexible probe to the tissue through ultrasonic imaging.

26. The method of claim 22 further comprising irrigating a site of the tissue removal.

27. The method of claim 22 further comprising aspirating the tissue to remove a plurality of fragments of the tissue.