Systems and methods for treatment of BPH

• US 8,801,702 B2
• Filed: 02/11/2013
• Issued: 08/12/2014
• Est. Priority Date: 11/06/2008
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: NxThera, Inc (Boston Scientific Corporation)
• Inventors: Hoey, Michael, Shadduck, John H.
• Primary Examiner(s): Dvorak, Linda
• Assistant Examiner(s): Ram, Jocelyn D
• Application Number:
  US13/764,645
• Publication Number:
  US 20130158534A1
• Time in Patent Office: 547 Days
• Field of Search: 606/27, 606/41, 607/104, 607/105, 607/113, 604/113, 604/22, 604/500, 604/517
• US Class Current: 606/27
• CPC Class Codes: A61B 17/3203 Fluid jet cutting instruments
• CPC Class Codes: A61B 17/32037 for removing obstructions from inner organs or blood vessels, e.g. for atherectomy
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 18/04 by heating by applying electromagnetic radiation A61B18/18; hyperthermia using electric or magnetic fields, radiation or ultrasound A61N
• CPC Class Codes: A61B 18/1485 having a short rigid shaft for accessing the inner body through natural openings
• CPC Class Codes: A61B 2017/00274 Prostate operation, e.g. prostatectomy, turp, bhp treatment
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• CPC Class Codes: A61B 2017/22079 with suction of debris
• CPC Class Codes: A61B 2017/32035 with gas or air
• CPC Class Codes: A61B 2018/00547 Prostate
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/0063 Sealing
• CPC Class Codes: A61B 2018/048 in gaseous form

Abstract

A prostate therapy system is provided that may include any of a number of features. One feature of the prostate therapy system is that it can access a prostate lobe from the urethra. Another feature of the prostate therapy system is that it can deliver condensable vapor into the prostate to ablate the prostate tissue. Another feature of the prostate therapy system is that it can aspirate tissue from the prostate. Yet another feature of the prostate therapy system is that it can rotate during delivery of vapor and aspiration of tissue. Methods associated with use of the prostate therapy system are also covered.

Claims

1. A prostate therapy system comprising:

a condensable vapor source; and

a tissue extraction member adapted to be inserted into a urethra of an adult male human subject and to rotate within the urethra,

the tissue extraction member having a vapor delivery port communicating with the vapor source and adapted to deliver condensable vapor to the prostate lobe, an aspiration port adapted to aspirate prostate tissue proximally into the ablation probe, and a liquid ejection port concentric with the vapor delivery port and communicating with a high pressure liquid source.

2. The system of claim 1 wherein the liquid ejection port and high pressure liquid source are adapted and configured to eject high pressure liquid in pulses between 1 pulse/second and 100 pulses/second.

3. The system of claim 1 wherein the liquid ejection port is adapted and configured to eject high pressure liquid radially outward from a longitudinal axis of the tissue extraction member.

4. The system of claim 1 wherein the liquid ejection port is adapted and configured to eject high pressure liquid at an angle of between 10 degrees and 90 degrees from a longitudinal axis of the tissue extraction member.

5. The system of claim 1 further comprising a distal occlusion member adapted to occlude the urethra distal to the vapor delivery port.

6. The system of claim 1 further comprising a proximal occlusion member adapted to occlude the urethra proximal to the vapor delivery port.

7. The system of claim 1 further comprising a powered rotating motor configured to rotate the tissue extraction member between 5 rpm and 10,000 rpm.