EASE: The Materna Prep Pivotal Study

Criteria for inclusion 1. Subject scheduled for vaginal birth. 2. Subject gestating a single fetus. 3. Subject nulliparous, or had a previous pregnancy terminated within 24 weeks gestation. 4. Subject able and willing to comply with the protocol required follow-up visits. 5. Subjects able and willing to provide written informed consent prior to enrollment. 6. Subject has sufficient mental capacity to: understand the informed consent form (ICF), comply with the protocol requirements, and provide clinically relevant and reliable feedback regarding their experience with the device. 7. Subject receives epidural anesthesia during labor prior to using the device. 8. Subject 18 years of age or older at time of consent.

Criteria for exclusion 1. Subject has high likelihood of less than 1 hours of potential device dilation time after she arrives at the hospital 2. Subject has need for or is planning a Caesarean-section 3. Subject begins labor with less than 36 weeks gestation 4. Subject has neurological diseases, e.g. Multiple Sclerosis, that may result in unrelated pelvic disorders or has been diagnosed with HIV. 5. Subject has muscular or skin disorder that affects elasticity of tissue, such as scleroderma or lupus.6. Subject has evidence of local or systemic infection, or has active herpes infection. 7. Subject has any prior surgical procedures to the vaginal anatomy which could lead to pelvic dysfunction, pelvic fractures, or pelvic soft tissue injuries. 8. Subject has any general health condition or systemic disease that may represent, in the opinion of the investigator, a potential increased risk associated with device use or pregnancy. 9. Subject has placenta previa or vasa previa 10. Known significant chromosomal or structural fetal anomalies 11. Category 2 and/or 3 fetal tracing that is unresolved