Transperineal vapor ablation systems and methods

Patent metadata

Field	Value
Publication number	US-2020397495-A1
Application number	US-202016919499-A
Country	US
Kind code	A1
Filing date	Jul 2, 2020
Priority date	Jan 6, 2017
Publication date	Dec 24, 2020
Grant date	—

Abstract

A vapor delivery needle is provided that may include any of a number of features. One feature of the energy delivery probe is that it can apply condensable vapor energy to tissue, such as a prostrate, to shrink, damage, or denature tissues of the prostate. Methods associated with use of the energy delivery probe are also covered.

First claim

1 .- 15 . (canceled)

16 . A vapor delivery device comprising:
a shaft; a first electrode disposed at a distal tip of the shaft, wherein the first electrode is configured to measure a first electrical impedance of a first tissue contacting the first electrode; a second electrode disposed on the shaft, proximally of the first electrode, wherein the second electrode is configured to measure a second electrical impedance of a second tissue contacting the second electrode; and an electrically insulative material disposed between the first electrode and the second electrode; and an electronic controller configured to use the first electrical impedence and the second electrical impedence in order to determine whether the first electrode and the second electrode are disposed within a prostate.

17 . The vapor delivery device of claim 16 , wherein the second electrode is a ring electrode.

18 . The vapor delivery device of claim 16 , wherein the first electrode is configured to measure a first phase shift of the first tissue.

19 . The vapor delivery device of claim 18 , wherein the second electrode is configured to measure a second phase shift of the second tissue.

20 . The vapor delivery device of claim 19 , wherein the controller is configured to use the first phase shift and the second phase shift in order to determine whether the first electrode and the second electrode are disposed within the prostate.

21 . The vapor delivery device of claim 16 , wherein the shaft includes at least one hole configured to delivery vapor to the prostate.

22 . The vapor delivery device of claim 16 , further comprising circuitry electrically connected to the first electrode and the second electrode, wherein the circuitry is configured to provide a variable frequency.

23 . The vapor delivery device of claim 16 , wherein vapor is deliverable by the shaft only when the first electrode and the second electrode are disposed within the prostate.

24 . A vapor delivery device comprising:
a shaft terminating in a distal tip, wherein the distal tip includes a first electrode configured to measure a first electrical impedance of a first tissue contacting the first electrode, the shaft including:
a second, ring electrode, proximal of the first electrode, configured to measure a second electrical impedance of a second tissue contacting the second electrode; and
an electrically insulative material disposed between the first electrode and the second electrode.

25 . The vapor delivery device of claim 24 , further comprising:
an electronic controller configured to use the first electrical impedence and the second electrical impedence in order to determine whether the first electrode and the second electrode are disposed within a prostate.

26 . The vapor delivery device of claim 24 , wherein the first electrode is configured to measure a first phase shift of the first tissue.

27 . The vapor delivery device of claim 26 , wherein the second electrode is configured to measure a second phase shift of the second tissue.

28 . The vapor delivery device of claim 24 , wherein the shaft includes at least one hole configured to delivery vapor to the prostate.

29 . The vapor delivery device of claim 24 , further comprising circuitry electrically connected to the first electrode and the second electrode, wherein the circuitry is configured to provide a variable frequency

30 . The vapor delivery device of claim 24 , wherein vapor is deliverable by the shaft only when the first electrode and the second electrode are disposed within the prostate.

31 . A vapor delivery device comprising:
a shaft terminating in a distal tip, wherein the distal tip includes a first electrode configured to measure a first electrical impedance and a first phase shift of a first tissue contacting the first electrode, the shaft including:
a second electrode, proximal of the first electrode, configured to measure a second electrical impedance and a second phase shift of a second tissue contacting the second electrode; and
an electrically insulative material disposed between the first electrode and the second electrode.

32 . The vapor delivery device of claim 31 , further comprising:
an electronic controller configured to use the first electrical impedence, the first phase shift, the second electrical impedence, and the second phase shift, in order to determine whether the first electrode and the second electrode are disposed within a prostate.

33 . The vapor delivery device of claim 31 , wherein the shaft includes at least one hole configured to delivery vapor to the prostate.

34 . The vapor delivery device of claim 31 , further comprising circuitry electrically connected to the first electrode and the second electrode, wherein the circuitry is configured to provide a variable frequency.

35 . The vapor delivery device of claim 31 , wherein vapor is deliverable by the shaft only when the first electrode and the second electrode are disposed within the prostate.

Assignees

• Boston Scient Scimed Inc

Inventors

• Hoey Michael
• Hastings Roger Noel
• Schrom Mark
• Byrne Matthew
• Mauch Grant
• Jerke Eric
• Kravik Richard Charles

Classifications

• A61B18/04 Primary

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

• A61M5/20

  Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically (A61M5/142 {, A61M5/46} take precedence; {hypodermic projectiles F42B12/54}) · CPC title

• A61B2018/00101

  low, i.e. thermally insulating · CPC title

• A61B2018/00898

  Alarms or notifications created in response to an abnormal condition · CPC title

• A61B2018/00029

  open · CPC title