Novel Catheter Sensor

• US 20070225584A1
• Filed: 04/18/2005
• Published: 09/27/2007
• Est. Priority Date: 04/19/2004
• Status: Abandoned Application

• Current Assignee: University of Florida Research Foundation, Incorporated (State University System of Florida)
• Original Assignee: University of Florida Researouchfoundation Incorporated
• Inventors: Gravenstein, Nikolaus, Euliano, Tammy
• Application Number:
  US11/547,459
• Publication Number:
  US 20070225584A1
• Time in Patent Office: Days
• US Class Current: 600/376
• CPC Class Codes: A61B 5/288 for foetal cardiography, e.g. scalp electrodes
• CPC Class Codes: A61B 5/389 Electromyography [EMG]
• CPC Class Codes: A61B 5/4362 Assessing foetal parameters
• CPC Class Codes: A61B 5/6853 with a balloon
• CPC Class Codes: A61B 5/6874 Bladder

Abstract

A fetal monitoring device directed to a maternal bladder insert having at least one sensor on the distal end to detect fetal vital signs and uterine activity, and methods for detecting fetal vital signs and uterine activity using the device. The bladder insert is preferably a catheter with an integrated electrode for detecting fetal heart rate and uterine electromyography. Furthermore, the device transmits this data to a monitoring system for diagnosis and observation.

Claims

1. A catheter useful for monitoring fetal vital signs from a maternal bladder, wherein the catheter comprises:

a) a bladder insert comprising a distal end and a proximal end and at least one inlet useful for urine drainage when in use;

b) at least one electrophysical sensor; and

c) a means for transmitting data collected by the at least one electrophysical sensor.

2. The catheter according to claim 1, further comprising:

d) a retention balloon interposed between the distal end of the bladder insert and the proximal end of the bladder insert.

3. The catheter according to claim 2, further comprising:

e) at least one lead attached to the distal end of the bladder insert.

4. The catheter according to claim 1, further comprising:

f) at least one lead attached to the distal end of the bladder insert.

5. The catheter according to claim 2, wherein the at least one electrophysical sensor is integrated onto the surface of the retention balloon.

7. The catheter according to claim 1, wherein the at least one electrophysical sensor is integrated into the structure of the bladder insert.

8. The catheter according to claim 1, wherein one electrophysical sensor is integrated into the distal end of the bladder insert.

9. The catheter according to claim 3, wherein one electrophysical sensor is attached to one lead.

10. The catheter according to claim 3, comprising at least two electrophysical sensors and at least two leads;

wherein one electrophysical sensor is attached to one of said leads.

11. The catheter according to claim 10, wherein each of the at least two leads are uniformly spaced apart from each other.

12. The catheter according to claim 3, wherein the at least one lead comprises a first plurality of leads attached to a first plurality of electrophysical sensors and a second plurality of leads attached to a second plurality of electrophysical sensors;

and wherein the first plurality of leads are spaced apart from the second plurality of leads.

13. The catheter according to claim 1, wherein one electrophysical sensor is an electrode.

14. The catheter according to claim 1, wherein the transmitting means is a wireless transmitter.

15. The catheter according to claim 1, wherein the transmitting means is a cable connection between the bladder insert and a computing means external to the bladder insert.

16. The catheter according to claim 1, wherein the bladder insert comprises a flexible material selected to bear the weight of at least one electrophysical sensor without degrading.

17. The catheter according to claim 1, wherein the bladder insert comprises latex, polytetrafluoroethylene, silicon rubber, or a combination of the foregoing.

6. The catheter according to claim, wherein the at least one electrophysical sensor is integrated onto the surface of the retention balloon at its equator.

18. A fetal monitoring device useful for monitoring antepartum and intrapartum fetal electrocardiogram signals comprising:

a) a catheter comprising;

i) a bladder insert comprising a distal end and a proximal end and at least one inlet useful for urine drainage when in use, at least one electrophysical sensor, and a means for transmitting data collected by the at least one electrophysical sensors;

ii) a bladder insert comprising a distal end and a proximal end and at least one inlet useful for urine drainage when in use, at least one electrophysical sensor, a means for transmitting data collected by the at least one electrophysical sensors, and a retention balloon interposed between the distal end of the bladder insert and the proximal end of the bladder insert;

iii) a bladder insert comprising a distal end and a proximal end and at least one inlet useful for urine drainage when in use, at least one electrophysical sensor, a means for transmitting data collected by the at least one electrophysical sensors, a retention balloon interposed between the distal end of the bladder insert and the proximal end of the bladder insert, and at least one lead attached to the distal end of the bladder insert;

or

iv) a bladder insert comprising a distal end and a proximal end and at least one inlet useful for urine drainage when in use, at least one electrophysical sensor, a means for transmitting data collected by the at least one electrophysical sensors, and at least one lead attached to the distal end of the bladder insert; and

b) a maternal fetal monitoring system, wherein the maternal fetal monitoring system is external to a maternal patient when in use.

19. The fetal monitoring device according to claim 18, further comprising:

c) at least one electrode that can be positioned on the skin of the maternal patient.

20. The fetal monitoring device according to claim 18, further comprising:

d) at least one electrode that can be positioned on the skin of the maternal patient; and

e) a power source.

21. The fetal monitoring device according to claim 18, further comprising:

f) a power source.

22. The fetal monitoring device according to claim 18, further comprising:

g) at least one electrode that can be positioned on the skin of the maternal patient;

h) a power source; and

i) a means for guiding the catheter into a bladder of the maternal patient.

23. The fetal monitoring device according to claim 18, further comprising:

j) a means for guiding the catheter into a bladder of the maternal patient.

24. The fetal monitoring device according to claim 19, further comprising:

k) a means for guiding the catheter into a bladder of the maternal patient.

25. The fetal monitoring device according to claim 21, further comprising:

l) a means for guiding the catheter into a bladder of the maternal patient.

30. The fetal monitoring device according to claim 18, wherein the fetal monitoring system comprises a means for processing fetal electrocardiogram signals and a means for converting fetal electrocardiogram signals into output.

31. The fetal monitoring device according to claim 18, wherein the at least one electrophysical sensor is integrated onto the surface of the retention balloon.

32. The fetal monitoring device according to claim 18, wherein the at least one electrophysical sensor is integrated into the surface of the retention balloon at its equator.

33. The fetal monitoring device according to claim 18, wherein the at least one electrophysical sensor is integrated into the structure of the bladder insert.

34. The fetal monitoring device according to claim 18, wherein one electrophysical sensor is integrated into the distal end of the bladder insert.

35. The fetal monitoring device according to claim 18, wherein one electrophysical sensor is attached to one lead.

36. The fetal monitoring device according to claim 18, comprising at least two electrophysical sensors and at least two leads;

wherein one electrophysical sensor is attached to one of said leads.

37. The fetal monitoring device according to claim 18, wherein each of the at least two leads are uniformly spaced apart from each other.

38. The fetal monitoring device according to claim 18, wherein the at least one electrophysical sensors comprise a first plurality of electrophysical sensors and a second plurality of electrophysical sensors;

wherein the at least one lead comprises a first plurality of leads and a second plurality of leads, wherein the first plurality of electrophysical sensors are attached to the first plurality of leads;

wherein the second plurality of electrophysical sensors are attached to the second plurality of leads; and

wherein the first plurality of leads are spaced apart from the second plurality of leads.

39. The fetal monitoring device according to claim 18, wherein one electrophysical sensor is an electrode.

40. The fetal monitoring device according to claim 18, wherein the transmitting means is a wireless transmitter.

41. The fetal monitoring device according to claim 18, wherein the transmitting means is a cable connection between the bladder insert and a computing means external to the bladder insert.

42. The fetal monitoring device according to claim 18, wherein the bladder insert comprises a flexible material selected to bear the weight of at least one electrophysical sensor without degrading.

43. The fetal monitoring device according to claim 18, wherein the bladder insert comprises latex, polytetrafluoroethylene, silicon rubber, or a combination of the foregoing.

26-29. -29. (canceled)

44. A method for collecting fetal vital signs comprising:

a) inserting a catheter into the bladder of a maternal patient, wherein the catheter comprises;

i) a bladder insert comprising a distal end and a proximal end and at least one inlet useful for urine drainage when in use, at least one electrophysical sensor, and a means for transmitting data collected by the at least one electrophysical sensors;

ii) a bladder insert comprising a distal end and a proximal end and at least one inlet useful for urine drainage when in use, at least one electrophysical sensor, a means for transmitting data collected by the at least one electrophysical sensors, and a retention balloon interposed between the distal end of the bladder insert and the proximal end of the bladder insert;

iii) a bladder insert comprising a distal end and a proximal end and at least one inlet useful for urine drainage when in use, at least one electrophysical sensor, a means for transmitting data collected by the at least one electrophysical sensors, a retention balloon interposed between the distal end of the bladder insert and the proximal end of the bladder insert, and at least one lead attached to the distal end of the bladder insert;

or

iv) a bladder insert comprising a distal end and a proximal end and at least one inlet useful for urine drainage when in use, at least one electrophysical sensor, a means for transmitting data collected by the at least one electrophysical sensors, and at least one lead attached to the distal end of the bladder insert;

b) detecting electric impulses generated by a fetal heartbeat; and

c) transmitting the electric impulses to a fetal monitoring system.

45. The method according to claim 44, wherein the inserting step comprises using a catheter guide.

46. The method according to claim 44, wherein the detecting step comprises supplying power to the fetal monitoring device and capturing FECG signals.

47. The method according to claim 44, wherein the detecting step comprises adjusting the location of the at least one electrophysical sensors.

48. The method according to claim 44, wherein the at least one electrophysical sensor is integrated onto the surface of the retention bladder.

49. The method according to claim 44, wherein the at least one electrophysical sensor is integrated into the surface of the retention balloon at its equator.

50. The method according to claim 44, wherein the at least one electrophysical sensor is integrated into the structure of the bladder insert.

51. The method according to claim 44, wherein one electrophysical sensor is integrated into the distal end of the bladder insert.

52. The method according to claim 44, wherein one electrophysical sensor is attached to one lead.

53. The method according to claim 44, comprising at least two electrophysical sensors and at least two leads;

wherein each of the at least two electrophysical sensors are individually attached to each of the at least two leads.

54. The method according to claim 44, wherein each of the at least two leads are uniformly spaced apart from each other.

55. The method according to claim 44, wherein the at least one electrophysical sensors comprise a first plurality of electrophysical sensors and a second plurality of electrophysical sensors;

wherein the at least one lead comprises a first plurality of leads and a second plurality of leads, wherein the first plurality of electrophysical sensors are attached to the first plurality of leads;

wherein the second plurality of electrophysical sensors are attached to the second plurality of leads; and

wherein the first plurality of leads are spaced apart from the second plurality of leads.

56. The method according to claim 44, wherein one electrophysical sensor is an electrode.

57. The method according to claim 44, wherein the transmitting means is a wireless transmitter.

58. The method according to claim 44, wherein the transmitting means is a cable connection between the bladder insert and a computing means external to the bladder insert.

59. The method according to claim 44, wherein the bladder insert comprises a flexible material selected to bear the weight of at least one electrophysical sensor without degrading.

60. The method according to claim 44, wherein the bladder insert comprises latex, polytetrafluoroethylene, silicon rubber, or a combination of the foregoing.