Systems and methods for treating prostate cancer

Patent metadata

Field	Value
Publication number	US-2020337756-A1
Application number	US-202016871342-A
Country	US
Kind code	A1
Filing date	May 11, 2020
Priority date	Mar 14, 2013
Publication date	Oct 29, 2020
Grant date	—

Abstract

A vapor delivery needle and method is provided that is adapted for treating prostate cancer. The energy delivery probe can apply condensable vapor energy to tissue, such as a peripheral zone tissue in a human prostate. In one method, a needle is introduced into peripheral zone tissue of a human prostate, and vapor media is delivered through the needle to ablate peripheral zone tissue without ablating non-peripheral zone tissue. Systems for treating prostate cancer with vapor therapy are also provided.

First claim

1 .- 39 . (canceled)

40 . A method of treatment, the method comprising:
inserting a vapor delivery needle into a peripheral zone lobe of a prostate; using the vapor delivery needle, delivering a vapor into the peripheral zone lobe; using the delivered vapor, ablating an entirety of the peripheral zone lobe.

41 . The method of claim 40 , wherein the delivered vapor is retained within a prostate capsule such that tissue outside of the prostate is not ablated.

42 . The method of claim 40 , wherein the delivering the vapor step ablates only the peripheral zone lobe of the prostate.

43 . The method of claim 40 , wherein the ablating step destroys cancerous, tissue in the peripheral zone lobe.

44 . The method of claim 40 , wherein the vapor delivery needle includes a removable sheath having a pair of concentric tubes forming an insulating layer between the pair of concentric tubes, and wherein the sheath is tapered.

45 . The method of claim 40 , wherein the vapor is delivered while the needle is moving.

46 . The method of claim 40 , further comprising measuring a temperature of the prostate.

47 . The method of claim 46 , further comprising positioning a temperature probe exterior of the prostate.

48 . The method of claim 46 , further comprising ceasing to deliver vapor when an exterior portion of the prostate reaches a temperature between 47 degrees C. and 52 degrees C.

49 . The method of claim 40 , wherein the delivering the vapor step provides vapor for 20 seconds to 60 seconds.

50 . A method of treatment, the method comprising:
inserting a vapor source into a tissue of a peripheral zone of a prostate, the tissue of the peripheral zone including a cancer lesion; using the vapor source, delivering an amount of vapor to the tissue, wherein the amount of vapor is configured to ablate all of the tissue comprising the peripheral zone of the tissue.

51 . The method of claim 50 , wherein the delivered vapor is retained within a prostate capsule such that tissue outside of the prostate is not ablated.

52 . The method of claim 50 , wherein the delivering the vapor step ablates only the peripheral zone lobe of the prostate.

53 . The method of claim 50 , wherein the vapor source includes a vapor delivery needle, the vapor delivery needle including a removable sheath having a pair of concentric tubes forming an insulating layer between the pair of concentric tubes, and wherein the sheath is tapered.

54 . The method of claim 50 , wherein the vapor is delivered while the needle is moving.

55 . The method of claim 50 , further comprising measuring a temperature of the prostate.

56 . The method of claim 55 , further comprising positioning a temperature probe exterior of the prostate.

57 . The method of claim 55 , further comprising ceasing to deliver vapor when an exterior portion of the prostate reaches a temperature between 47 degrees C. and 52 degrees C.

58 . The method of claim 50 , wherein the delivering the vapor step provides vapor for 20 seconds to 60 seconds.

59 . A method of treatment, the method comprising:
inserting a vapor delivery needle into a peripheral zone lobe of a prostate; while moving the vapor delivery needle, delivering a vapor into the peripheral zone lobe from the vapor delivery needle; using the delivered vapor, ablating an entirety of the peripheral zone lobe, wherein the delivered vapor is retained within a prostate capsule such that tissue outside of the prostate is not ablated.

Assignees

• Boston Scient Scimed Inc

Inventors

• Hoey Michael
• Mauch Grant
• Schrom Mark

Classifications

• A61B18/04 Primary

  by heating (by applying electromagnetic radiation A61B18/18) · CPC title

• A61B2090/378

  using ultrasound · CPC title

• A61B8/0841

  for locating instruments · CPC title

• A61B2018/00101

  low, i.e. thermally insulating · CPC title

• A61B2018/048

  in gaseous form · CPC title