Apparatus for mapping and coagulating soft tissue in or around body orifices

• US 20050171536A1
• Filed: 04/04/2005
• Published: 08/04/2005
• Est. Priority Date: 11/22/1999
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Swanson, David K., Jenkins, Thomas R., Thompson, Russell B., Koblish, Josef V., Phan, Huy D.
• Granted Patent: US 7,184,811 B2
• Time in Patent Office: Days
• US Class Current: 606/49
• CPC Class Codes: A61B 18/08 by means of electrically-heated probes
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2018/00065 porous
• CPC Class Codes: A61B 2018/00083 low, i.e. electrically insulating
• CPC Class Codes: A61B 2018/00095 high, i.e. heat conducting
• CPC Class Codes: A61B 2018/0016 Energy applicators arranged in a two- or three dimensional array
• CPC Class Codes: A61B 2018/00214 Expandable means emitting energy, e.g. by elements carried thereon
• CPC Class Codes: A61B 2018/00238 porous
• CPC Class Codes: A61B 2018/00267 having a basket shaped structure
• CPC Class Codes: A61B 2018/00273 Anchoring means for temporary attachment of a device to tissue
• CPC Class Codes: A61B 2018/00351 Heart
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/1467 using more than two electrodes on a single probe
• CPC Class Codes: A61M 2025/105 having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes
• CPC Class Codes: A61M 2025/1086 having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves

Abstract

A probe that may be used to create circumferential lesions in body tissue and, in some implementations, may also be used to perform mapping functions. The probe includes a collapsible/expandable structure that supports electrodes or other operative elements against the body tissue.

Claims

1-29. -29. (canceled)

30. A mapping and coagulation apparatus, comprising:

a tissue coagulation probe including

a tissue coagulation probe support body defining at least one interior lumen,

a hoop structure supported on the tissue coagulation probe support body, and

at least one operative element supported on the hoop structure; and

a mapping probe passable through the tissue coagulation probe support body lumen including

a mapping probe support body, and

a mapping structure supported on the mapping probe support body.

31. A mapping and coagulation apparatus as claimed in claim 30, wherein the tissue coagulation probe support body defines a longitudinal axis and the hoop structure defines a plane perpendicular to the longitudinal axis.

32. A mapping and coagulation apparatus as claimed in claim 30, wherein the hoop structure comprises a hoop spline and at least first and second support splines.

33. A mapping and coagulation apparatus as claimed in claim 32, wherein the hoop structure collapses in response to movement of the first and second support splines in opposite directions.

34. A mapping and coagulation apparatus as claimed in claim 33, wherein the tissue coagulation probe support body comprises a first support body member defining an inner lumen and a second support body member movable within the inner lumen of the first support body member and defining the at least one interior lumen, the first support spline is operably connected to the first support body member, and the second support spline is operably connected to the second support body member.

35. A mapping and coagulation apparatus as claimed in claim 30, wherein the hoop structure comprises a hoop spline, a plurality of support splines, and first and second proximally extending stylets.

36. A mapping and coagulation apparatus as claimed in claim 35, wherein the hoop structure collapses in response to movement of the first and second stylets in opposite directions.

37. A mapping and coagulation apparatus as claimed in claim 30, wherein the hoop structure comprises a helical support structure.

38. A mapping and coagulation apparatus as claimed in claim 30, wherein the at least one operative element comprises a plurality of spaced electrodes.

39. (canceled)

40. (canceled)

41. A probe, comprising:

a support body defining a longitudinal axis;

an expandable/collapsible hoop structure defining an open interior region and supported on the support body such that the longitudinal axis of the support body passes through the open interior region; and

at least one operative element supported on the expandable/collapsible hoop structure.

42. A probe as claimed in claim 41, wherein the support body comprises a catheter.

43. A probe as claimed in claim 41, wherein the at one operative element comprises a plurality of spaced electrodes.

44. A probe as claimed in claim 41, wherein the hoop structure comprises a hoop spline and at least first and second support splines.

45. A probe as claimed in claim 44, wherein the hoop structure collapses in response to movement of the first and second support splines in opposite directions.

46. A probe as claimed in claim 45, wherein the support body comprises a first support body member defining an inner lumen and a second support body member movable within the inner lumen, the first support spline is operably connected to the first support body member, and the second support spline is operably connected to the second support body member.

47. A probe as claimed in claim 41, wherein the hoop structure comprises a hoop spline, a plurality of support splines, and first and second proximally extending stylets.

48. A probe as claimed in claim 47, wherein the hoop structure collapses in response to movement of the first and second stylets in opposite directions.

49. A probe as claimed in claim 41, wherein the hoop structure comprises a helical support structure.

50. A probe as claimed in claim 41, wherein the hoop structure comprises a hoop spline and at least first and second radially extending support splines.

51. A probe as claimed in claim 41, wherein the hoop structure comprises a hoop spline and at least first and second distally extending support splines that respectively define acute angles with the longitudinal axis of the support body.

52. A probe as claimed in claim 51, wherein the support body includes tubular members extending distally therefrom at the acute angle and the support splines are at least partially located within the tubular members.

53. A probe as claimed in claim 51, wherein the first and second support splines extend distally from the support body to the hoop spline and the hoop structure further includes at least third and fourth support splines extending distally from the hoop spline.

54. A probe as claimed in claim 41, wherein the hoop structure comprises at least two structural members, each structural member consisting of a pair of struts and a curved portion.

55. A probe as claimed in claim 54, wherein the hoop structure comprises four structural members.

56. A probe as claimed in claim 41, wherein the support body defines a distal end and the hoop structure is located proximally of the distal end of the support body.

57. A probe as claimed in claim 41, wherein the support body defines a distal end and the hoop structure extends distally from the distal end of the support body.