OB Smart

OB Smart is developing a device to accurately measure dilation and effacement of the cervix.

Currently, women have no accurate measuring tool for use at home to confirm when labor actually begins. The OB Smart device will give women the freedom to listen to their bodies and to deliver their babies with confidence.

The Novel Product

OB Smart is developing a home-use device to accurately measure effacement and dilation of the cervix.

The small, portable device will be suitable for women in their third trimester. Comfortable to use, it will offer women toward the end of their pregnancy increased confidence, reduced trips to the hospital, and improved patient care.

The Team

Ali Stern OB Smart

OB Smart CEO Ali Stern-Cohen

  • Ali-Stern-Cohen, Inventor, Founder, and CEO: Extensive experience as product manager in the medical device field; MBA Tel Aviv University; B.Eng., City University of New York
  • Ran Stern, Ph.D., Investor and Founder: Over 20 years’ high-level management positions; worldwide consultant in the packaging industry; numerous patents and publications; Ph.D., physical chemicals; MBA, Tel Aviv University
  • Sharon Maslovitz, M.D., Medical Advisor: Director, Labor and Delivery Emergency Department, Tel Aviv Sourasky Medical Center; fellow, Mount Sinai Hospital, Toronto, Canada

Trendlines’ directors: Todd Dollinger, Nitza Kardish


Founded: June 2016
Stage: Technology development
Investor: The Trendlines Group
IP: Submitted PCT

Background & Market

Generally, the onset of labor begins with uterine contractions that bring about cervical effacement and dilation (thinning and opening). One of the most common indications of true labor used in hospitals in the United States and developed countries is dilation between 3 and 4 centimeters accompanied by regular contractions.

Today, women are examined in the hospital or clinic to verify active labor. Timely, accurate measurement of cervical dilation is critical as it determines the different stages of active labor and can be one important indicator of abnormalities.

  • Women are subjected to numerous manual vaginal examinations (in many cases, performed by different members of the labor and delivery team) to measure cervical dilation and effacement. These examinations rely on some level of subjectivity by the examiner, so results may vary or may be inaccurate depending on the clinician.
  • Moreover, many women arrive at the hospital either to wait around for hours or to be sent home due to false labor.

There are approximately 136 million births annually worldwide (WHO). OB Smart estimates its potential market at 30 million women (from mid- to high-socioeconomic levels).

OS Smart logo

Home-use device to accurately measure effacement and dilation of the cervix


Ali Stern-Cohen, CEO

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