Obstetric anal sphincter injuries – OASIS

  • Category: Medical Devices
  • Investment Status: Pre-Seed
  • Medical Field: Gynecology
  • Patent Status: PCT
  • Development Status: POC
  • Medical Center: Rabin Medical Center
  • Inventors:  
    Michal Grosswald NR

Our device for preventing OASIS tears has been developed by a senior midwife with over 25 years of experience in the field.

An object of the invention is to reduce the frequency of lacerations during delivery, specifically III-IV degree tears. The purpose of the device is to support the skin tissue and protect the perineum muscles, perineal body, and the tissue between the vagina and the rectum.

Despite optimal primary repair, 30–50% of affected women suffer from varying degrees of anal tears and experience a significant negative impact on their quality of life. Several studies have reported that the risk of anal incontinence is much higher with subsequent deliveries and that symptoms get worse over time. An estimated 40% of these women will opt for a future elective cesarean section to avoid worsening of symptoms or a repeat OASIS from a vaginal birth.  Third- and fourth-degree tears are more traumatic, requiring surgical repair and resulting in more lasting discomfort.