Clinical Study of Umbilical Cord Mesenchymal Stem Cells Combined With Collagen Scaffold in the Treatment of Thin Endometrium

3-7 days after the end of menstruation, we underwent hysteroscopic exploration and separation if there was intrauterine adhesions. Intraoperative endometrial biopsy, recording biopsy location, endometrial specimens sent to HE examination and immunohistochemistry (vwf detection of microvessel density). The umbilical cord mesenchymal stem cell combined with collagen scaffold was spread on the balloon scaffold and placed in the uterine cavity. 5 ml of saline was filled into the balloon, and B-ultrasound confirmed that the scaffold was attached to the uterine wall. The patient was hospitalized for 2 hours and the patient's vital signs were recorded.