MEDICAL SYSTEM AND METHOD OF USE

• US 20110160648A1
• Filed: 12/30/2010
• Published: 06/30/2011
• Est. Priority Date: 12/30/2009
• Status: Active Grant

• Current Assignee: Tsunami MedTech, LLC
• Original Assignee: Tsunami MedTech, LLC
• Inventors: HOEY, Michael
• Granted Patent: US 9,161,801 B2
• Time in Patent Office: Days
• US Class Current: 604/26
• 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 18/1815 using microwaves
• CPC Class Codes: A61B 2018/00011 with fluids
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/00589 Coagulation
• CPC Class Codes: A61B 2018/00619 Welding
• CPC Class Codes: A61B 2018/0063 Sealing
• CPC Class Codes: A61B 2018/048 in gaseous form
• CPC Class Codes: A61B 2018/1807 using light other than laser radiation
• CPC Class Codes: A61B 2018/1861 with an instrument inserted into a body lumen or cavity, e.g. a catheter
• CPC Class Codes: A61M 2025/0002 with a pressure sensor at the distal end
• CPC Class Codes: A61M 2025/0037 characterized by lumina being arranged side-by-side
• CPC Class Codes: A61M 2025/0039 characterized by lumina being arranged coaxially
• CPC Class Codes: A61M 2025/0057 Catheters delivering medicament other than through a conventional lumen, e.g. porous walls or hydrogel coatings
• CPC Class Codes: A61M 2025/0073 Tip designed for influencing the flow or the flow velocity of the fluid, e.g. inserts for twisted or vortex flow
• CPC Class Codes: A61M 2025/0085 Multiple injection needles protruding axially, i.e. along the longitudinal axis of the catheter, from the distal tip
• CPC Class Codes: A61M 2025/0087 Multiple injection needles protruding laterally from the distal tip
• CPC Class Codes: A61M 2025/1047 having centering means, e.g. balloons having an appropriate shape
• CPC Class Codes: A61M 2025/1086 having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
• CPC Class Codes: A61M 2210/1042 Alimentary tract A61M2210/0618 takes precedence
• CPC Class Codes: A61M 2210/105 : Oesophagus
• CPC Class Codes: A61M 25/003 : characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves catheter tips A61M25/0067
• CPC Class Codes: A61M 25/0068 : Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/0069 : Tip not integral with tube
• CPC Class Codes: A61M 25/007 : Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 25/0074 : Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
• CPC Class Codes: A61M 25/0082 : Catheter tip comprising a tool
• CPC Class Codes: A61M 25/0084 : being one or more injection needles
• CPC Class Codes: A61M 25/0147 : with movable mechanical means, e.g. pull wires
• CPC Class Codes: A61M 25/065 : Guide needles
• CPC Class Codes: A61M 25/10 : Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/1002 : characterised by balloon shape A61M25/1006, A61M25/1009 take precedence
• CPC Class Codes: A61M 25/1011 : Multiple balloon catheters

Abstract

A system and method for tissue thermotherapy including a source for generating a vapor phase media for treating a space in a human body, such as and intraluminal or intracavity space. The system further includes a filtering member for allowing a recirculation of flowable media about an interface with tissue, wherein the filtering member prevent ablation detritus from interfering with media outflows from the working end.

Claims

1. A method for treating stomach ulcers, the method comprising:

introducing a device proximate to a stomach ulcer; and

thermally treating the stomach ulcer with vapor media introduced by the device.

2. The method of claim 1 wherein the thermal treatment is provided by a water vapor.

3. The method of claim 1 wherein the thermal treatment is provided by a release of energy from a phase change of a vapor media.

4. The method of claim 3 wherein the thermal treatment includes engaging tissue about the targeted ulcer within a concavity of the device.

5. The method of claim 4 wherein the vapor media is introduced into the concavity of the device.

6. The method of claim 4 further comprising aspirating media from the concavity of the device.

7. The method of claim 4 further comprising aspirating media through a filter member.

8. The method of claim 4 further comprising utilizing a controller to control vapor media inflow and media outflow from the concavity.

9. The method of claim 4 further comprising expanding a working end to form the concavity.

10. A method for locally treating a region of a wall of an organ, vessel, cavity or lumen the method comprising:

positioning a device proximate to a targeted tissue of the wall of a body organ, cavity, vessel or lumen; and

introducing a flow media to the vicinity of the targeted tissue wherein a release of energy from a phase change of a water vapor portion of the flow media ablates the targeted tissue.

11. The method of claim 10 wherein the flow media is delivered about a surface of the targeted tissue.

12. The method of claim 10 wherein the flow media is injected into a subsurface portion of the targeted tissue.

13. The method of claim 10 wherein the flow media is delivered about a surface of the targeted tissue and injected into a subsurface portion of the targeted tissue.

14. The method of claim 10 wherein the flow media is delivered in a working end of the device that contains the flow media.

15. The method of claim 10 wherein the flow media is delivered in a working end of the device that circulates the flow media.

16. The method of claim 15 wherein the flow media circulates between an outlet and an inlet in the working end.

17. The method of claim 15 wherein the phase change energy release occurs about a filter member and tissue proximate the working end.

18. The method of claim 17 wherein the flow media circulation passes through a filter member intermediate the outlet and the inlet in the working end through a filter member.

19. The method of claim 17 wherein the filter member is configured to prevent ablation detritus from entering the inlet.

20. The method of claim 10 wherein the targeted tissue is selected from the group of malignant tumors, benign tissue, ulcers, polyps, fibroids, nodules and dysplasias.

21. A device for locally treating a region of a wall of an organ, vessel, cavity or lumen comprising:

a vapor delivery tool configured to deliver flowable media from a working end outlet to an interface with a targeted tissue in the interior of a patient'"'"'s body;

an inlet in the working end for allowing a return flow of flowable media; and

a filter member carried by the working end configured to prevent ablation detritus from entering the inlet.

22. The device of claim 21 wherein the filter member comprises at least in part a working end surface configured to substantially contact the targeted tissue.

23. The device of claim 21 wherein the filter member is positioned in a concavity of the working end.

24. The device of claim 21 wherein the filter member is positioned intermediate the outlet and the inlet.

25. The device of claim 21 wherein the filter member comprises a working end surface distal of the outlet and the inlet.

26. The device of claim 21 wherein the filter member has a surface area that is greater than the cross section of the inlet by at least 200%, 400%, 600%, 800% and 1000%27. A method for contained treatment of a region of tissue, the method comprising:

positioning a flow media device proximate to the region of tissue where the flow media device is configured to deliver a flow media through a delivery port, where the flow media releases an amount of energy to the region of tissue from a phase change of the flow media;

deploying an expandable structure from a distal portion of the flow media device to define a treatment cavity;

fluidly separating the region of tissue from adjacent tissue by contacting the expandable structure against the region of tissue; and

delivering the vapor flow media into the cavity such that the vapor flow media is contained within the cavity and engages the region of tissue to ablate the tissue.

28. The method of claim 27 further comprising applying an aspiration source through an aspiration port to the treatment cavity to aspirate the flow media.

29. The method of claim 28 further comprising positioning a filter within the cavity such that the aspirated flow media is filtered prior to aspiration.

30. The method of claim 29 where positing the filter comprises placing the filter adjacent to the region of tissue such that the filter separates the region of tissue from the delivery port and aspiration port.

31. The method of claim 30 where the filter is placed in contact with the region of tissue.

32. The method of claim 29 where positing the filter comprises placing the filter adjacent to the region of tissue and proximal of the delivery port such that the filter separates the region of tissue from the aspiration port and so that the delivery port delivers the flow media directly to the region of tissue.

33. The method of claim 27 wherein the flow media is delivered to a surface of the region of tissue.

34. The method of claim 27 wherein the flow media is injected into a subsurface portion of the region of tissue.

35. The method of claim 27 wherein the flow media is delivered to a surface of the region of tissue and injected into a subsurface portion of the targeted tissue.

36. The method of claim 27 where delivering the flow media into the cavity comprises circulating the flow media within the cavity.