Apparatus and method for using an ultrasonic medical device to treat urolithiasis

• US 20050267488A1
• Filed: 05/13/2004
• Published: 12/01/2005
• Est. Priority Date: 05/13/2004
• Status: Abandoned Application

• Current Assignee: Cybersonics, Inc
• Original Assignee: OmniSonics Medical Technologies, Inc.
• Inventors: Rabiner, Robert A., Hare, Bradley A., Marciante, Rebecca I., Varady, Mark J.
• Application Number:
  US10/844,861
• Publication Number:
  US 20050267488A1
• Time in Patent Office: Days
• US Class Current: 606/113
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• 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 17/221 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 2017/22024 with a part reflecting mechanical vibrations, e.g. for focusing
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop

Abstract

An apparatus and a method for an ultrasonic medical device to treat urolithiasis and ablate a stone. The ultrasonic medical device comprises an ultrasonic probe having a wire body with a proximal end, a distal end and a longitudinal axis therebetween and a plurality of tines extending from the distal end of the wire body. The ultrasonic medical device includes a sheath capable of surrounding the wire body and the plurality of tines. The ultrasonic probe is inserted into the sheath and the ultrasonic probe is moved until the plurality of tines surround at least a portion of an outer surface of the stone. An ultrasonic energy source engaged to the ultrasonic probe supplies an ultrasonic energy to the ultrasonic probe to produce a transverse ultrasonic vibration along at least a portion of the ultrasonic probe to ablate the stone.

Claims

1. An ultrasonic medical device for removing a stone in an organ of a body comprising:

a wire body having a proximal end, a distal end and a longitudinal axis therebetween;

a plurality of tines extending from the distal end of the wire body for engaging the stone; and

a sheath capable of surrounding the wire body and the plurality of tines, wherein a transverse ultrasonic vibration propagates along the wire body and the plurality of tines.

2. The ultrasonic medical device of claim 1 wherein the plurality of tines form a basket-like structure.

3. The ultrasonic medical device of claim 1 wherein the wire body and the plurality of tines form an ultrasonic probe of the ultrasonic medical device.

4. The ultrasonic medical device of claim 1 wherein a distal end of the plurality of tines are connected.

5. The ultrasonic medical device of claim 1 wherein a distal end of the plurality of tines are not connected.

6. The ultrasonic medical device of claim 1 wherein a proximal end of the plurality of tines is welded to the wire body.

7. The ultrasonic medical device of claim 1 wherein a proximal end of the plurality of tines is mechanically fastened to the wire body.

8. The ultrasonic medical device of claim 1 wherein the plurality of tines are movable between a collapsed position and an expanded position.

9. The ultrasonic medical device of claim 1 wherein a diameter of the plurality of tines in a collapsed position is approximately equal to a diameter of the wire body.

10. The ultrasonic medical device of claim 1 wherein a diameter of the plurality of tines in an expanded position after removing the plurality of tines from within the sheath is larger than a diameter of the wire body.

11. The ultrasonic medical device of claim 1 wherein the plurality of tines surround at least a portion of an outer surface of the stone.

12. The ultrasonic medical device of claim 1 wherein the plurality of tines focus a stone destroying effect of the ultrasonic medical device.

13. The ultrasonic medical device of claim 1 wherein the plurality of tines engage the stone.

14. The ultrasonic medical device of claim 1 further comprising a plurality of markers on the wire body.

15. The ultrasonic medical device of claim 3 further comprising an ultrasonic energy source engaged to the ultrasonic probe that supplies an ultrasonic energy to the ultrasonic probe.

16. The ultrasonic medical device of claim 3 wherein the transverse ultrasonic vibration provides a plurality of transverse nodes and a plurality of transverse anti-nodes along at least a portion of the ultrasonic probe including the plurality of tines.

17. An ultrasonic probe for ablation of at least one stone in an organ of a body comprising:

a wire body having a proximal end, a distal end and a longitudinal axis therebetween; and

a plurality of tines engaging the wire body,

wherein an ultrasonic energy source engaged to the ultrasonic probe supplies an ultrasonic energy to the ultrasonic probe, producing a transverse ultrasonic vibration along at least a portion of the ultrasonic probe to ablate the stone.

18. The ultrasonic probe of claim 17 wherein the plurality of tines extend from a distal end of the wire body.

19. The ultrasonic probe of claim 17 wherein the plurality of tines engage the wire body between a proximal end and a distal end of the wire body.

20. The ultrasonic probe of claim 17 further comprising a second plurality of tines engaging the wire body of the ultrasonic probe.

21. The ultrasonic probe of claim 20 wherein at least one of the plurality of tines is located between the distal end and the proximal end of the wire body.

22. The ultrasonic probe of claim 17 wherein the ultrasonic probe is disposable.

23. The ultrasonic probe of claim 17 wherein the ultrasonic probe is for a single use on a single patient.

24. The ultrasonic probe of claim 17 wherein the plurality of tines are movable between a collapsed position and an expanded position.

25. The ultrasonic probe of claim 17 wherein a diameter of the plurality of tines in a collapsed position is approximately equal to a diameter of the wire body.

26. The ultrasonic probe of claim 17 wherein a diameter of the plurality of tines in an expanded position is larger than a diameter of the wire body.

27. The ultrasonic probe of claim 17 wherein the plurality of tines focus a stone destroying effect of the ultrasonic probe.

28. The ultrasonic probe of claim 17 wherein the plurality of tines engage at least one stone.

29. The ultrasonic probe of claim 17 wherein a distal end of the plurality of tines are connected.

30. The ultrasonic probe of claim 17 wherein a distal end of the plurality of tines are not connected.

31. The ultrasonic probe of claim 17 wherein the plurality of tines surround at least a portion of an outer surface of at least one stone.

32. The ultrasonic probe of claim 17 wherein the transverse ultrasonic vibration produces a plurality of transverse nodes and a plurality of transverse anti-nodes along at least a portion of the ultrasonic probe including the plurality of tines.

33. A method of ablating a stone in an organ of a body comprising:

inserting an ultrasonic probe into a sheath, the ultrasonic probe having a wire body and a plurality of tines extending from a distal end of the wire body;

moving the plurality of tines from a collapsed position to an expanded position by advancing the plurality of tines beyond a distal end of the sheath;

moving the ultrasonic probe until the plurality of tines surround at least a portion of an outer surface of the stone;

compressing a portion of the plurality of tines to engage the stone; and

activating an ultrasonic energy source to provide an ultrasonic energy to the ultrasonic probe to ablate the stone.

34. The method of claim 33 further comprising pushing the ultrasonic probe through the sheath to advance the plurality of tines beyond the distal end of the sheath.

35. The method of claim 33 further comprising pulling back on the sheath to advance the plurality of tines beyond the distal end of the sheath.

36. The method of claim 33 further comprising compressing the plurality of tines by pulling the portion of the plurality of tines back into the sheath.

37. The method of claim 33 further comprising compressing the plurality of tines by moving the sheath over the portion of the plurality of tines.

38. The method of claim 33 further comprising producing a transverse ultrasonic vibration along the ultrasonic probe by the ultrasonic energy source.

39. The method of claim 38 wherein the transverse ultrasonic vibration provides a plurality of transverse nodes and a plurality of transverse anti-nodes along at least a portion of the ultrasonic probe.

40. The method of claim 33 further comprising moving the ultrasonic probe back and forth to surround the stone within the plurality of tines.

41. The method of claim 33 further comprising sweeping the ultrasonic probe to surround the stone within the plurality of tines.

42. The method of claim 33 further comprising rotating the ultrasonic probe to surround the stone within the plurality of tines.

43. The method of claim 33 further comprising twisting the ultrasonic probe to surround the stone within the plurality of tines.

44. The method of claim 33 wherein a distal end of the plurality of tines are connected.

45. The method of claim 33 wherein a distal end of the plurality of tines are not connected.

46. The method of claim 33 wherein a diameter of the plurality of tines in the expanded position after removing the plurality of tines from within the sheath is larger than a diameter of the wire body.

47. The method of claim 33 wherein a diameter of the plurality of tines in the collapsed position is approximately equal to a diameter of the wire body.

48. The method of claim 33 further comprising focusing a stone destroying effect of the ultrasonic probe through the plurality of tines.

49. A method of reducing a size of a stone in an organ of a body comprising:

inserting an ultrasonic probe into a biocompatible material member, the ultrasonic probe comprising a wire body with a plurality of tines engaging the wire body;

moving the plurality of tines from a collapsed position to an expanded position by advancing the plurality of tines beyond a distal end of the biocompatible material member;

moving the ultrasonic probe until the plurality of tines surround at least a portion of an outer surface of the stone; and

activating an ultrasonic energy source to produce a transverse ultrasonic vibration along the ultrasonic probe to reduce the size of the stone.

50. The method of claim 49 wherein the biocompatible material member is selected from the group consisting of a catheter, a balloon, and a sheath.

51. The method of claim 49 further comprising compressing the plurality of tines to engage the stone.

52. The method of claim 49 further comprising reducing the stone to a size that can be discharged from the body in a conventional way.

53. The method of claim 49 further comprising reducing the stone to a size smaller than an inner diameter of the biocompatible material member and pulling the stone through the biocompatible material member to remove at least one stone from the body.

54. The method of claim 49 further comprising producing the transverse ultrasonic vibration to provide a plurality of transverse nodes and a plurality of transverse anti-nodes along at least a portion of the ultrasonic probe.

55. The method of claim 49 further comprising focusing a stone destroying effect of the ultrasonic probe through the plurality of tines.

56. The method of claim 49 further comprising providing the transverse ultrasonic vibration along the wire body and the plurality of tines.