Method and apparatus for therapeutic electromagnetic treatment

• US 5,626,631 A
• Filed: 02/03/1995
• Issued: 05/06/1997
• Est. Priority Date: 10/20/1992
• Status: Expired due to Term

• Current Assignee: Lumenis Limited (Boston Scientific Corporation)
• Original Assignee: ESC Medical Systems, Ltd (Boston Scientific Corporation)
• Inventors: Eckhouse, Shimon
• Primary Examiner(s): Sykes, Angela D.
• Assistant Examiner(s): WINAKUR, ERIC FRANK
• Application Number:
  US08/383,509
• Time in Patent Office: 823 Days
• Field of Search: 507/88, 507/89, 507/90, 507/91, 507/92, 507/93, 507/94, 606/2, 606/3, 606/9, 606/10, 606/11, 606/12, 606/13, 606/17, 606/18, 606/19
• US Class Current: 607/88
• CPC Class Codes: A61B 18/203 applying laser energy to the outside of the body
• CPC Class Codes: A61B 2017/00057 Light
• CPC Class Codes: A61B 2017/00172 Pulse trains, bursts, intermittent continuous operation
• CPC Class Codes: A61B 2018/00011 with fluids
• CPC Class Codes: A61B 2018/00029 open
• CPC Class Codes: A61B 2018/00452 Skin
• CPC Class Codes: A61B 2018/1807 using light other than laser radiation
• CPC Class Codes: H05B 41/34 to provide a sequence of flashes

Abstract

A therapeutic treatment device for coagulating blood in blood vessels underlying an epidermal layer is disclosed having an incoherent light source operable to provide a pulsed light output for treatment and a driver circuit, including a switch capable of being electrically turned on and being electrically turned off to thereby provide a first interval of light, connected to the light source to control the pulse width and delay between pulses.

Claims

1. A therapeutic treatment device for coagulating blood in blood vessels underlying an epidermal layer comprising an incoherent light source operable to provide a pulsed light output for coagulation blood and a driver circuit, including a switch capable of being electrically turned on and being electrically turned off to thereby provide a first interval of light, connected to the light source to control the pulse width and delay between pulses.

2. The treatment device of claim 1 further comprising a housing with an opening, said light source being disposed in said housing, and said housing is adapted to be disposed adjacent a skin treatment area, and wherein the switch is a GTO.

3. The therapeutic treatment device of claim 1, wherein the switch and driver circuit limit the first interval to a predetermined duration of less than 100 milliseconds.

4. The therapeutic treatment device of claim 3, wherein the incoherent light source provides an incoherent light output having an energy fluence of between 6 and 300 J/cm² during the first interval.

5. The therapeutic treatment device of claim 4, wherein the incoherent light source provides an incoherent light output of between 6 and 20 J/cm² during the first interval.

6. The therapeutic treatment device of claim 5, further including a light guide having a cross-sectional area of no less than 0.3 cm² which couples the light output to the epidermal layer.

7. The therapeutic treatment device of claim 6, wherein the light guide has a rectangular cross-section of between 3 and 30 millimeters in width and 10 and 100 millimeters in length.

8. The therapeutic treatment device of claim 4 wherein the incoherent light source provides an incoherent light output of between 30 and 100 J/cm² during the first interval.

9. The therapeutic treatment device of claim 1, wherein the light source is a flashtube, and further comprising a first capacitor electrically coupled to the switch, wherein the switch electrically connects and disconnects the capacitor to the light source.

10. The therapeutic treatment device of claim 9 further comprising a second capacitor operable to be alternately coupled both in series and in parallel to the first capacitor.