Methods for activating the muscle cells or nerves of the uterus or cervix

• US 5,991,649 A
• Filed: 06/04/1996
• Issued: 11/23/1999
• Est. Priority Date: 12/22/1992
• Status: Expired due to Term

• Current Assignee: Board of Regents of the University of Texas System (University of Texas System)
• Original Assignee: University of Texas System
• Inventors: Garfield, Robert A., Chwalisz, Krzysztof
• Primary Examiner(s): HINDENBURG, MAX F
• Application Number:
  US08/658,108
• Time in Patent Office: 1,267 Days
• Field of Search: 128/421, 128/642, 128/733, 128/734, 607/39, 607/115, 607/116, 607/138, 600/372, 600/546, 600/547
• US Class Current: 600/372
• CPC Class Codes: A61B 5/296 for electromyography [EMG]
• CPC Class Codes: A61B 5/391 of genito-urinary organs
• CPC Class Codes: A61B 5/411 Detecting or monitoring allergy or intolerance reactions to an allergenic agent or substance
• CPC Class Codes: A61N 1/05 for implantation or insertion into the body, e.g. heart electrode A61N1/06 takes precedence
• CPC Class Codes: A61N 1/36007 of urogenital or gastrointestinal organs, e.g. for incontinence control

Abstract

Muscle cells and nerves of the uterus and cervix are treated with electrical pulses having selective parameters in order to stimulate or inhibit contraction thereof. Either a needle or probe is provided having stimulation electrodes thereon from which the treatment pulses emanate. In a further embodiment, patients are simultaneously treated with pharmacological agents in conjunction with the electrical treatment.

Claims

1. A method of activating muscle cells to either stimulate or inhibit contraction thereof by applying electrical pulses thereto, wherein each pulse is applied for a duration in a range of about 10 to 500 milliseconds at a frequency in the range of about 0.05 to 5 Hz with a voltage in a range of about 0.1 to 30 volts and in trains of about 0.5 to 10 seconds.

2. The method of claim 1, wherein the muscle cells are muscle cells forming the wall of a uterus.

3. The method of claim 2, wherein the muscle cells are cells forming the wall of a cervix.

4. The method of claim 1, wherein the muscle cells comprise the wall of a human uterus.

5. The method of claim 4, wherein the human uterus is the uterus of a pregnant female.

6. The method of claim 5, wherein the electrical application is for stimulation of the uterus to contract and is applied with dosages of pharmacological agents selected from the group consisting of prostaglandins, antiprogestins and oxytocins.

7. The method of claim 5, wherein the application of electrical pulses inhibits the uterine contractility and is performed in the presence of pharmacological agents selected from the group consisting of nitric oxide, β

-agonists, and steroid hormones.

8. The method of claim 4, wherein the human cervix is the cervix of a pregnant female.

9. The method of claim 5, wherein the electrical application is for stimulation of the cervix to contract and is applied with dosages of pharmacological agents selected from the group consisting of prostaglandins, antiprogestins and oxytocins.

10. The method of claim 5, wherein the application of electrical pulses inhibits the cervix contractility and is performed in the presence of pharmacological agents selected from the group consisting of nitric oxide, β

-agonists, and steroid hormones.

11. The method of claim 1, wherein the electrical pulses are applied to an exposed wall of the muscle tissue.

12. The method of claim 1, wherein the electrical pulses are applied through electrodes on a needle embedded in the muscle tissue.

13. The method of claim 1, wherein each pulse is applied for about 100 milliseconds at a frequency of about 1 Hz with a voltage of about 10 volts and in trains of about 3 seconds.

14. The method of claim 2, wherein the nerves are nerves of a uterus or cervix.

16. The method of claim 14, wherein the nerves are nerves of a uterus or cervix.

17. The method of claim 16, wherein the uterus or cervix is a human uterus or cervix.

18. The method of claim 17, wherein the uterus or cervix is a uterus or cervix of a pregnant human.

21. The method of claim 17, wherein the human cervix is the cervix of a pregnant female.

22. The method of claim 17, wherein the electrical application is for stimulation of the cervix to contract and is applied with dosages of pharmacological agents selected from the group consisting of prostaglandins, antiprogestins and oxytocins.

23. The method of claim 17, wherein the application of electrical pulses inhibits the cervix contractility and is applied in the presence of pharmacological agents selected from the group consisting of nitric oxide, β

-agonists, and steroid hormones.

24. The method of claim 16, wherein the uterus or cervix is a human uterus or cervix.

25. The method of claim 17, wherein the uterus or cervix is a uterus or cervix of a pregnant human.

26. The method of claim 24, wherein the human cervix is the cervix of a pregnant female.

27. The method of claim 24, wherein the electrical application is for stimulation of the cervix to contract and is applied with dosages of pharmagological agents selected from the group consisting of prostaglandins, antiprogestins and oxytocins.

28. The method of claim 24, wherein the application of electrical pulses inhibits the cervix contractility and is applied in the presence of pharmacological agents selected from the group consisting of nitric oxide, β

-agonists and steroid hormones.

15. A method of stimulating nerves which control smooth muscle tissue with muscle cells having a chronaxie in the range of about 0 to 100 milliseconds to cause the muscle tissue to either relax or contract comprising applying pulses thereto having a duration in a range of about 0.1 to 1 millisecond at a frequency of about 2.5 to 60 Hz with a voltage in the range of about 10 to 80 volts and in trains having a duration of less than 1 second to stimulate intramural nerve fiber.

19. The method of claim 15, wherein the electrical application is for stimulation of the uterus to contract and is applied with dosages of pharmacological agents selected from the group consisting of prostaglandins, antiprogestins and oxytocins.

20. The method of claim 15, wherein the application of electrical pulses inhibits the uterine contractility and is applied in the presence of pharmacological agents selected from the group consisting of nitric oxide, β

-agonists, and steroid hormones.

29. A method of stimulating nerves which control muscle tissue to cause the muscle tissue to either relax or contract comprising applying pulses thereto having a duration in a range of about 0.5 to 0.7 millisecond at a frequency of about 30 Hz with a voltage of about 30 volts and in trains in the range of about 1 to 3 seconds.

30. The method of claim 29, wherein the electrical application is for stimulation of the uterus to contract and is applied with dosages of pharmacological agents selected from the group consisting of prostaglandins, antiprogestins and oxytocins.

31. The method of claim 29, wherein the application of electrical pulses inhibits the uterine contractility and is applied in the presence of pharmacological agents selected from the group consisting of nitric oxide β

-agonists and steroid hormones.