Method of treating a body cavity using an endoscopic surgical laser

• US 5,944,713 A
• Filed: 09/09/1997
• Issued: 08/31/1999
• Est. Priority Date: 02/25/1992
• Status: Expired due to Term

• Current Assignee: Surgical Laser Technologies Incorporated (Dalian Jikang Medical Systems Import & Export Co., Ltd.)
• Original Assignee: Surgical Laser Technologies Incorporated (Dalian Jikang Medical Systems Import & Export Co., Ltd.)
• Inventors: Schuman, Daniel
• Primary Examiner(s): Shay, David M.
• Application Number:
  US08/925,878
• Time in Patent Office: 721 Days
• Field of Search: 606/2, 606/3-19, 606/27, 600/108, 607/96, 607/100-105
• US Class Current: 606/10
• CPC Class Codes: A61B 18/24 with a catheter A61B18/26, A61B18/28 take precedence
• CPC Class Codes: A61B 2018/2238 with means for selectively laterally deflecting the tip of the fibre
• CPC Class Codes: A61M 2205/106 reciprocating

Abstract

A method of treating the interior surface of a body cavity of a patient using an optical fiber having at its distal end a tip which partially absorbs and partially emits laser radiation supplied to the tip by the optical fiber. The distal end of the optical fiber is inserted into the cavity. An irrigating fluid is introduced into the cavity, wherein the fluid irrigates the interior surface. The irrigating fluid is in heat-transfer relationship with the tip. The irrigation fluid is heated by supplying laser radiation to the tip whereby laser radiation absorbed by the tip raises the temperature of the tip and the surrounding irrigating fluid. The surface of the body cavity to be treated is selectably exposed with the laser radiation for thermally and optically treating said surface.

Claims

1. A method of treating a body cavity of a patient, comprising the steps of:

a. inserting an optical fiber into the cavity, the optical fiber having a tip at a distal end of said optical fiber;

b. supplying laser energy to the tip through the optical fiber;

c. introducing a heat-transfer fluid into the cavity such that the fluid irrigates the cavity and is in heat transfer relationship with the tip;

d. converting the laser energy to thermal energy by a coating on the tip;

e. heating the heat-transfer fluid in proximity to the tip by the thermal energy; and

f. selectably heating the body cavity by the heated heat-transfer fluid.

2. A method according to claim 1, further comprising the step of selectably exposing said body cavity to be treated with said laser energy for at least one of thermally treating and optically treating said body cavity.

3. A method according to claim 1 further comprising the step of preheating the irrigating fluid prior to introducing it into said body cavity.

4. A method according to claim 1 further comprising contacting said body cavity to be treated with said tip for applying mechanical force to said body cavity for treatment thereof.

5. A method according to claim 1, further comprising the step of selectably contacting tissue of said body cavity directly with said tip for palpating and treating said tissue.

6. A method of treating a body cavity of a patient, comprising the steps of:

a. inserting into said cavity an optical fiber having a tip at the distal end thereof, laser energy being supplied to said tip by the optical fiber;

b. introducing into said cavity a heat-transfer fluid and causing said fluid to irrigate said body cavity;

c. causing the tip to be in heat-transfer relationship to the heat-transfer fluid;

d. heating said heat-transfer fluid by supplying laser energy to said tip whereby a substantial amount of the laser energy is converted to thermal energy by means formed at the tip for converting laser energy to thermal energy, thereby causing said tip and the heat-transfer fluid in proximity to said tip to become hot; and

e. selectably heating the body cavity by hot heat-transfer fluid in proximity to said tip for thermally treating said body cavity.

7. A method according to claim 6, further comprising the step of preheating the irrigating fluid prior to introducing it into said body cavity.

8. A method according to claim 6, further comprising contacting said body cavity to be treated with said tip for applying mechanical force to said body cavity for treatment thereof.

9. A method of treating the interior surface of a body cavity of a patient, comprising the steps of:

a. inserting into said cavity an optical fiber having a tip at the distal end thereof, the tip at least partially absorbing laser radiation supplied to said tip by said optical fiber;

b. introducing into said cavity a heat-transfer fluid and causing said fluid to irrigate said surface;

c. causing the tip to be in heat-transfer relationship to the heat-transfer fluid;

d. heating said heat-transfer fluid by supplying laser radiation to said tip whereby a substantial amount of the laser radiation is absorbed by said tip and converted to thermal energy by means formed at the tip for converting laser radiation to thermal energy, thereby causing said tip and the heat-transfer fluid in proximity to said tip to become hot;

e. selectably heating said surface of said body cavity by the hot heat-transfer fluid in proximity to said tip for thermally treating said surface; and

f. selectably contacting tissue of said body cavity directly with said tip for palpating and treating said tissue.

10. A method according to claim 9, further comprising contacting said surface to be treated with said tip for applying mechanical force to said surface for treatment thereof.

11. A method according to claim 9, wherein the body cavity is mucocutaneous, such that the heating of the irrigating fluid results in vasoconstriction of the tissue.

12. A method according to claim 9, wherein the tip partially absorbs and partially emits laser radiation supplied to said tip by said optical fiber.

13. A method according to claim 12, further comprising the step of selectably exposing said surface of said body cavity to be treated with said laser radiation for thermally and optically treating said surface.

14. A method according to claim 13 wherein the tip contacts the surface for the step of selectably exposing said surface of said body cavity to be treated with said laser radiation.

15. A method according to claim 13 wherein the tip is spaced from the surface for the step of selectably exposing said surface of said body cavity to be treated with said laser radiation.

16. A method according to claim 13, further comprising the step of preheating the irrigating fluid prior to introducing it into said cavity.