Surgical scene reporter Dou Yuming photo

The reporter was informed on the 25th that Xi'an Qujiang Maternity Hospital recently used the world's most advanced 4D printing technology to successfully perform a vaginoplasty for a 19-year-old congenital vaginal patient. She is expected to become a mother in the future. The authors confirmed that the operation is the first in the world, filling the gap in the application of 4D printing technology in the field of maternity.

The 19-year-old Yuanyuan (a pseudonym) is quiet and beautiful. However, because of her congenital absence of vagina, she has undergone vaginoplasty and multiple vaginal and cervical adhesions, resulting in repeated scarring of the vagina and cervix. After growing up, because menstruation can not be resolved for a long time, Yuanyuan often suffers from abdominal pain, and has been seeking medical treatment for many years.

Not long ago, Yuan Yuan came to Xi'an Qujiang Maternity Hospital for treatment. Yin Guowu, the dean of the hospital, said that due to the loss of the normal anatomical level of Yuanyuan, if surgery is performed again, not only the difficulty of surgery, but also the risk of bladder and rectal injury will increase. In addition, the patient has a scar, and has undergone 4 vaginal reconstructions. Surgery was unsuccessful. "To completely solve the patient's pain, only the operation of the reconstruction of the vagina, but the possibility of scar formation again, this surgery may be the patient's last chance."

After consultation, Yin Guowu decided to use the world's leading 4D printing technology to create a set of vaginal support molds suitable for the size of the patient's vagina, and ultimately absorbable degradation. The strength and hardness of the mold is one of the difficulties of this project. According to Yin Guowu, 4D printing is a new concept. It is based on 3D and has a time dimension. People set the model and time through software, and the printed object will be deformed into the desired shape within the set time. 4D printing technology can design a "customized mold" that conforms to the length of the patient's vagina, avoiding postoperative complications caused by the mold being too long or too short in traditional surgery, and avoiding the infection caused by repeated placement of the vaginal mold, as well as the placement position. Incorrect causes of various complications.

In addition, another difficulty in research is the design of absorbable materials that conform to the human environment. Yin Guowu led the team to continuously try and explore, and finally developed biodegradable materials that can be naturally absorbed by the human body at around 37 °C. "We control the degradation time of the material to 2 years. At this time, the incidence of scar formation and contraction will be greatly increased. Falling, the physiological problems that plague patients will be solved."

In order to ensure the smooth implementation of the operation, Dean Yin Guowu and Professor Cao Tiesheng from Tangdu Hospital of the Fourth Military Medical University of Xi'an led the team for two months and finally designed the absorbable mold needed for the operation. At the end of December 2017, after careful preparation, the team of experts successfully carried out 4D printing vaginal reconstruction for Yuanyuan. The successful implementation of the world's first 4D printed vaginal reconstruction surgery will bring the world's maternity clinical medicine development to a new stage.

On the 25th, the reporter saw Yuanyuan, who came to the hospital for re-examination after the operation. She said happily, "Thank you for the doctor's superb medical skills, which not only made me a real woman, but also relieved my psychological pressure." Yin Guowu said that The operation was very successful, and in the future, Yuanyuan is entirely likely to become pregnant as a mother.

(Source: Xi'an Evening News)

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