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Last Updated: May 1, 2024

Claims for Patent: 7,041,275


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Summary for Patent: 7,041,275
Title:Irrigating fluid
Abstract: A surgical irrigating fluid composition, especially for endoscopic surgery, is provided comprising a rinsing fluid and nitrous oxide added as a marker to the rinsing fluid in an amount which is detectable in the expired breath from a mammal, especially man, that is subjected to the surgery.
Inventor(s): Hahn; Robert (Tullinge, SE)
Assignee: Hahn; Robert (Tullinge, SE)
Application Number:10/472,943
Patent Claims:1. A method of monitoring the amount of irrigating fluid composition which is absorbed during surgery in a mammal, including man, comprising utilizing an irrigating fluid composition comprising nitrous oxide as a marker in a detectable amount, and monitoring the expired breath from said mammal by means of a nitrous oxide detector to detect the amount of nitrous oxide therein.

2. A method according to claim 1 wherein said surgery is endoscopic surgery.

3. A method according to claim 2 wherein said endoscopic surgery is conducted in the genitourinary tract.

4. A method according to claim 3, wherein endoscopic surgery in the genitourinary tract is a transurethral resection or transcervical resection of the endometrium.

5. A method according to claim 1 wherein said irrigating fluid composition comprises sterile water and nitrous oxide as a marker.

6. A method according to claim 1 wherein said irrigating fluid composition contains a solute for inhibiting hemolysis.

7. A method according to claim 6 wherein said solute is selected from the group consisting of glycine, mannitol, and sorbitol, and mixtures thereof.

8. A method according to claim 6 wherein said solute is within the range of 0.1 5.0% by weight based on the weight of said irrigating fluid composition.

9. A method according to claim 7 wherein said solute is within the range of 0.1 5.0% by weight based on the weight of said irrigating fluid composition.

10. A method according to claim 6 wherein said solute is within the range of 0.5 2.5% by weight based on the weight of said irrigating fluid composition.

11. A method according to claim 7 wherein said solute is within the range of 0.5 2.5% by weight based on the weight of said irrigating fluid composition.

12. A method according to claim 6 wherein said solute is within the range of 1.0 2.0% by weight based on the weight of said irrigating fluid composition.

13. A method according to claim 7 wherein said solute is within the range of 1.0 2.0% by weight based on the weight of said irrigating fluid composition.

14. A method according to claim 1 wherein the amount of nitrous oxide in the irrigating fluid composition is within the range of 0.1 3.0% by weight based on the weight of said irrigating fluid composition.

15. A method according to claim 6 wherein the amount of nitrous oxide in the irrigating fluid composition is within the range of 0.1 3.0% by weight based on the weight of said irrigating fluid composition.

16. A method according to claim 1 wherein the amount of nitrous oxide in the irrigating fluid composition is within the range of 0.5 2.5% by weight based on the weight of said irrigating fluid composition.

17. A method according to claim 6 wherein the amount of nitrous oxide in the irrigating fluid composition is within the range of 0.5 2.5% by weight based on the weight of said irrigating fluid composition.

18. A method according to claim 1 wherein the amount of nitrous oxide in the irrigating fluid composition is within the range of 0.7 1.5% by weight based on the weight of said irrigating fluid composition.

19. A method according to claim 6 wherein the amount of nitrous oxide in the irrigating fluid composition is within the range of 0.7 1.5% by weight based on the weight of said irrigating fluid composition.

20. A method according to claim 1 wherein said mammal is a human.

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