Method and apparatus for indicating the condition of a woman and unborn child during childbirth
Abstract
Abstract THE METHOD AND APPARATUS FOR INDICATING THE CONDITION OF PREGNANT WOMEN AND UNBORN CHILDREN DURING EACH SUCCESSIVE STAGE OF PARTURITION INCLUDES CONVERTING A FETAL HEART TONE AND HEART BEAT INTO ELECTRIC SIGNALS HAVING A FREQUENCY AND AMPLITUDE INDICATIVE THEREOF AND SENSING THE ELECTRIC POTENTIAL OF THE SINGLAS OF DETERMINE WHETHER THE POTENTIAL IS ABOVE OR BELOW A DESIRED LEVEL. A FILTER UNIT IS EMPLOYED TO ELIMINATE BOISE SIGNALS OCCURRING AT THE ONSET OF LABOR PAINS FROM THE SIGNAL FROM WHICH THE POTENTIAL LEVEL IS SENSED, AND THESE NOISE SIGNALS ARE FED TO A SECOND FILTER MEANS TO OPERATE A LABOR PAIN INDICATOR. WHEN THE ELECTRIC POTENTIAL OF THE SENSED SIGNAL IS BELOW A DESIRED LEVEL, THE SIGNAL IS EMPLOYED TO OPERATE A NOR- MAL CONDITION INDICATOR WHICH INCLUDES BOTH VISUAL AND AUDIO INDICATION MEANS, WHILE SIGNALS ABOVE A DESIRED POTENTIAL LEVEL ARE EMPLOYED TO OPERATE AN ABNORMAL VISUAL CONDITION INDICATOR AS WELL AS THE AUDIO INDICATION MEANS.
Inventors
- 👤 Yoshio Hayashi
- 👤 Kimitaka Sawano
Bibliographic Details
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