Freezing method for controlled removal of fatty tissue by liposuction

• US 6,032,675 A
• Filed: 03/17/1998
• Issued: 03/07/2000
• Est. Priority Date: 03/17/1997
• Status: Expired due to Term

• Current Assignee: ZELTIQ Aesthetics, Inc. (Abbvie Incorporated)
• Original Assignee: Boris Rubinsky
• Inventors: Rubinsky, Boris
• Primary Examiner(s): PEFFLEY, MICHAEL F
• Application Number:
  US09/042,835
• Time in Patent Office: 721 Days
• Field of Search: 128/898, 606/20-26, 604/35, 604/28
• US Class Current: 128/898
• CPC Class Codes: A61B 18/02 by cooling, e.g. cryogenic techniques devices for cooling specific reflex points of the body within cell-life limits A61H39/06
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61B 2017/00106 ultrasonic
• CPC Class Codes: A61B 2017/00336 with a protective sleeve, e.g. retractable or slidable
• CPC Class Codes: A61B 2018/00023 closed, i.e. without wound contact by the fluid
• CPC Class Codes: A61B 2018/00041 Heating, e.g. defrosting
• CPC Class Codes: A61B 2018/0262 using a circulating cryogenic fluid
• CPC Class Codes: A61B 90/37 Surgical systems with images on a monitor during operation
• CPC Class Codes: A61F 2007/0054 with a closed fluid circuit, e.g. hot water
• CPC Class Codes: A61M 2202/0014 removed from the body
• CPC Class Codes: A61M 2202/08 Lipoids

Abstract

A method for removing fatty tissue in a body combines cryosurgery and liposuction. Cryosurgery first destroys fatty tissue to be removed by controllably freezing the tissue, and facilitates removal of the fatty tissue. Liposuction subsequently removes the destroyed fatty tissue by aspiration.

Claims

1. A method of removing fatty tissue in a body comprising:

controllably freezing the fatty tissue at a cooling rate sufficient to destroy the fatty tissue; and

removing the destroyed fatty tissue from the body.

2. The method of claim 1 wherein controllably freezing the fatty tissue comprises:

inserting a probe in the fatty tissue; and

internally cooling the probe.

3. The method of claim 1 wherein the probe is a cryosurgical probe, and the probe is internally cooled with a cryogen.

4. The method of claim 1 wherein controllably freezing the fatty tissue comprises freezing at a rate which propagates a freezing interface in the order of approximately several millimeters per minute.

5. The method of claim 1 wherein removing the destroyed fatty tissue comprises performing a conventional liposuction procedure on the destroyed fatty tissue.

6. The method of claim 1 wherein removing the destroyed fatty tissue comprises removal of the destroyed fatty tissue by a body'"'"'s own immune system.

7. The method of claim 1 wherein removing the destroyed fatty tissue comprises:

inserting a probe into the destroyed fatty tissue, wherein the probe is connected to a vacuum source; and

performing an aspiration of the destroyed fatty tissue using the probe and the vacuum.

8. The method of claim 1 further comprising monitoring the freezing process to control the extent of freezing the fatty tissue.

9. The method of claim 8 wherein monitoring comprises monitoring through palpation, image monitoring, or temperature monitoring.

10. The method of claim 9 wherein image monitoring comprises magnetic resonance imaging, CT imaging, light imaging or ultrasound imaging.

11. The method of claim 1 further comprising applying heat to a skin area surrounding the fatty tissue to prevent the skin area from freezing.

12. The method of claim 11 further comprising monitoring the freezing process, wherein monitoring comprises ultrasound imaging using one or more surface monitoring electrodes and applying heat to a skin area comprises placing a warm pad perfused with warm fluid on surfaces of the monitoring electrodes before placing the monitoring electrodes on the body and before mserting the probe into the fatty tissue.

13. The method of claim 11 wherein applying heat to a skin comprises controlling a flow of warm fluid to a skin area underneath the monitoring electrodes.

14. The method of claim 1 further comprising introducing a tumescent fluid in the fatty tissue prior to controllably freezing the fatty tissue.

15. The method of claim 1 further comprising introducing a tumescent fluid in the fatty tissue after controllably freezing the fatty tissue.

16. The method of claim 15 wherein the tumescent fluid comprises a local anesthetic and a chemical capable of destroying fatty tissue.

17. The method of claim 15 wherein the tumescent fluid comprises lidocaine and epinephrine.

18. An improved method of performing liposuction comprising:

applying heat to a skin area outside a fatty tissue to be removed;

controllably freezing the fatty tissue at a cooling rate sufficient to destroy the fatty tissue;

monitoring the freezing process to control the extent of freezing the fatty tissue; and

removing the destroyed fatty tissue through a conventional liposuction procedure.