Apparatus and method for disrupting subcutaneous structures

• US 20070060989A1
• Filed: 09/05/2006
• Published: 03/15/2007
• Est. Priority Date: 09/07/2005
• Status: Abandoned Application

• Current Assignee: Ulthera Inc. (Merz Pharma GmbH & Company Kgaa)
• Original Assignee: Ulthera Inc. (Merz Pharma GmbH & Company Kgaa)
• Inventors: Gifford, Hanson, Deem, Mark
• Application Number:
  US11/515,634
• Publication Number:
  US 20070060989A1
• Time in Patent Office: Days
• US Class Current: 607/99
• CPC Class Codes: A61B 18/1477 Needle-like 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 2018/0016 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 2018/00452 Skin
• CPC Class Codes: A61B 2018/00613 Irreversible electroporation
• CPC Class Codes: A61B 2018/00898 Alarms or notifications created in response to an abnormal condition
• CPC Class Codes: A61H 2207/00 Anti-cellulite devices
• CPC Class Codes: A61N 1/306 Arrangements where at least part of the apparatus is introduced into the body
• CPC Class Codes: A61N 1/327 for enhancing the absorption properties of tissue, e.g. by electroporation
• CPC Class Codes: A61N 2007/0008 Destruction of fat cells
• CPC Class Codes: A61N 2007/0039 using microbubbles

Abstract

Methods and apparatus are provided for disruption/destruction of subcutaneous structures in a mammalian body for the treatment of skin irregularities, and other disorders such as excess adipose tissue, cellulite, and scarring. Devices and methods include energy mediated applicators, microneedles, catheters and subcutaneous treatment devices for applying a treatment non-invasively through the skin, less invasively through the skin, or minimally invasively via a subcutaneous approach. Various agents to assist or enhance the procedures are also disclosed.

Claims

1. A medical device for disrupting subcutaneous tissue, comprising:

an electrical field generator;

at least two electrodes electrically connected with the electrical field generator; and

an injection module configured to inject a treatment enhancing solution into the subcutaneous tissue to be treated.

2. The medical device of claim 1, wherein at least one electrode is adapted for insertion into the subcutaneous tissue to be treated and at least one other electrode is adapted for application to the epidermis of a patient to be treated.

3. The medical device of claim 1, wherein at least two electrodes are adapted for application to the epidermis of a patient to be treated.

4. The medical device of claim 1, wherein at least two electrodes are adapted for insertion into the subcutaneous tissue to be treated.

5. The medical device of claim 1, wherein one of the at least two electrodes is configured as a ground electrode.

6. The medical device of claim 1, wherein the at least two electrodes are configured as bipolar electrodes.

7. The medical device of claim 1, wherein one of the at least two electrodes is generally torroidal in shape.

8. The medical device of claim 1, wherein one of the at least two electrodes is generally cylindrically shaped.

9. The medical device of claim 1, wherein the electrical field generator is an electroporation generator.

10. The medical device of claim 1, further including a housing, wherein one of the at least two electrodes is disposed in the housing.

11. The medical device of claim 10, wherein at least one electrode is configured as a central treatment element disposed in the housing, and an annular area is disposed between the central treatment element and the housing.

12. The medical device of claim 11, wherein the annular region is configured for connection with a source of negative pressure, whereby the housing is adapted for contact with the skin overlying the area to be treated.

13. The medical device of claim 11, wherein the central treatment element is recessed into the housing.

14. The medical device of claim 11, wherein the central treatment element is adapted to roll over the skin of a patient to be treated.

15. The medical device of claim 1, further including a pad having microneedles connected to the injection module, wherein the pad is adapted to conform to the skin of a patient to be treated.

16. The medical device of claim 15, wherein the pad further includes a reservoir and an actuation element for deploying the microneedles.

17. The medical device of claim 15, wherein at least one of the microneedles is configured as one of the at least two electrodes.

18. The medical device of claim 1, further including a catheter device adapted to deploy tines to a subcutaneous region to be treated.

19. The medical device of claim 18 wherein the tines are selected from the group consisting of needles, electrodes, and cutting elements.

20. A subcutaneous tissue disruption device, comprising:

a tubular element having a first proximal end, a second distal end adapted for insertion into subcutaneous tissue, and a channel longitudinally disposed therebetween; and

a plurality of extendable elongated elements having first proximal ends and second distal ends disposed within the channel and capable of movement from a first retracted configuration within the channel to a second extended configuration outside of the channel, wherein the distal ends of the elongated elements are farther apart from each other in the extended configuration than in the retracted configuration.

21. The subcutaneous tissue disruption device of claim 20, wherein the plurality of extendable elongated elements are selected from the group consisting of needles, electrodes, and cutting elements.

22. The subcutaneous tissue disruption device of claim 20, wherein the plurality of extendable elongated elements are geometrically configured to shape an energy field for a biological tissue disruption effect.

23. A method for selective disruption of subcutaneous structures, comprising:

providing a first electrode and a second electrode;

disposing the first electrode adjacent to the tissue to be treated;

connecting the first electrode and the second electrode to an energy delivery system, the energy delivery system being configured to produce an electrical current between the first and the second electrode; and

providing electrical current between the first electrode and the second electrode, thereby increasing permeability of at least one cell.

24. The method for selective disruption of subcutaneous structures of claim 23, wherein at least the first electrode is geometrically configured to shape an energy field for a biological tissue disruption effect.

25. The method for selective disruption of subcutaneous structures of claim 23, further including rolling a central treatment element disposed within a housing over the tissue to be treated, wherein the first electrode is disposed in the central treatment element.

26. The method for selective disruption of subcutaneous structures of claim 25, further including providing less than atmospheric pressure to an annular area disposed around the central treatment element.