Three-dimensional monitoring of myographic activity

• US 7,447,542 B2
• Filed: 07/11/2003
• Issued: 11/04/2008
• Est. Priority Date: 07/11/2003
• Status: Expired due to Fees

• Current Assignee: Obstetrician Tools Ltd.
• Original Assignee: OB Tools Ltd.
• Inventors: Calderon, Ilan, Ben-David, Gal
• Primary Examiner(s): Hindenburg; Max
• Assistant Examiner(s): NGUYEN, HUONG Q
• Application Number:
  US10/616,995
• Publication Number:
  US 20050010127A1
• Time in Patent Office: 1,943 Days
• Field of Search: 600/546, 600/591, 600/551, 600/595, 324/207.26
• US Class Current: 600/546
• CPC Class Codes: A61B 5/288 for foetal cardiography, e.g. scalp electrodes
• CPC Class Codes: A61B 5/344 Foetal cardiography
• CPC Class Codes: A61B 5/391 of genito-urinary organs
• CPC Class Codes: A61B 5/4356 Assessing uterine contractions A61B5/033 takes precedence
• CPC Class Codes: A61B 8/02 Measuring pulse or heart rate
• CPC Class Codes: A61B 8/0866 involving foetal diagnosis; pre-natal or peri-natal diagnosis of the baby

Abstract

A system comprising an electromyogram (EMG) system operative to sense electromyographic activity generated in a muscle, at least one position sensor, and a processor in communication with the EMG system and the at least one position sensor, the processor operative to process data of the EMG system and three-dimensional position and orientation information from the at least one position sensor to provide an output that comprises electromyographic activity data as a function of the three-dimensional position and orientation of the at least one position sensor.

Claims

1. A system comprising:

an electromyogram (EMG) system comprising at least one EMG sensor operative to sense electromyographic activity generated in a uterine muscle and output electrical muscular activity signals;

at least one position sensor placed near said at least one EMG sensor; and

a processor in communication with said EMG system and said at least one position sensor, said processor operative to process electrical muscular activity signals of said EMG system and three-dimensional positions of said at least one EMG sensor from said at least one position sensor to provide an output and display of said electrical muscular activity signals as sensed by said at least one EMG sensor and the three-dimensional positions of said at least one EMG sensor at the same time, and further comprising a cardiotocogram (CTG) monitor in communication with said processor, said CTG monitor comprising a fetal beat-to-beat heart rate (FHR) sensor and a uterine labor activity (TOCO) sensor, and wherein said system indicates onset of premature birth based on the three-dimensional positions of said at least one EMG sensor together with TOCO information from said TOCO sensor.

2. The system according to claim 1 wherein said EMG system comprises at least one reference EMG sensor adapted to sense electromyographic activity generated in a reference muscle.

3. The system according to claim 1, further comprising a monitor coupled to said processor and adapted to display processed information from said processor.

4. The system according to claim 1, further comprising a position sensing system adapted to measure the three-dimensional position and an orientation of said at least one position sensor with respect to a reference position fixed in space.

5. The system according to claim 1, wherein said processor is operative to process data from said CTG monitor in addition to the data of said EMG system and the three-dimensional position information from said at least one position sensor to provide an output and display of electromyographic activity data and CTG data and the three-dimensional position of said at least one EMG sensor at the same time.

6. The system according to claim 1, further comprising a warning device in communication with said processor, operative to issue a warning if processed data processed by said processor is above a predefined limit.