Release date: 2017-06-29

Breast cancer is tantamount to a blue sky for women, and many patients have to remove the entire breast for health. With the development of technology, breast cancer patients can finally exchange health for the cost of losing their breasts. According to the People's Daily, Zhang Xue (pseudonym), a breast cancer patient in Shaanxi, accepted the world's first computer-assisted 4D printed breast filling operation at Xijing Hospital in 2016. After nearly one year of follow-up, it was confirmed that the operation has made a huge success. Surgery not only removes the patient's tumor, but also preserves breast integrity and feeding function. Behind this huge medical success, the contribution of 4D printing technology is not small.

What is 4D printing?

According to the China Economic Net, the so-called 4D printing is actually adding "time latitude" to the 3D printing, so that the printed objects can continuously change the morphological structure over time according to the pre-design requirements.

4D biomaterials debut

According to the "Xi'an Evening News" report, before the computer-aided 4D printing breast filling operation, the hospital used MRI scanning, magnetic resonance imaging and other means to accurately grasp the size and position of the patient's breast tumor, and the computer used this information on the breast and The tumor was reconstructed in three dimensions and simulated resection. On the day of surgery, the medical team first performed extensive resection of the left breast and axillary lymph node dissection based on computer simulations. After that, a pre-designed 4D printed biodegradable material filler was implanted in the defective breast tissue. Breast reconstruction was performed.

The 4D printed biodegradable material filler used in this operation is a new material with its own "time latitude". According to the "Xi'an Daily", the 4D printed biodegradable material filler was successfully developed by Xijing Hospital and Xi'an Jiaotong University after two years of collaborative research. The filler is white in color and has a porous mesh structure. It has strong elasticity and support force and has good compatibility with human tissues.

In addition, according to the report of the Central Broadcasting Network, the filling filled into the snow breast can be deformed and degraded within a set time, during which the self-contained fibrous tissue will gradually grow into the filling and eventually completely replace the filling. This will prevent the body from leaving foreign bodies and allow the patient to regain a natural, intact breast.

4D printing technology has unlimited prospects

Breast cancer is a major threat to women's health. With the success of the world's first computer-assisted 4D printed breast filling procedure, more breast cancer patients can choose to keep their breasts. Ling Rui, director of the Department of Thyroid Breast Vascular Surgery at Xijing Hospital, said in an interview with Western Network that such 4D printing technology can greatly improve the breast-conserving rate of breast cancer. Not only that, but the results may also be applied to filling operations in other parts of the tissue.

In an interview with Science and Technology Daily, Ling Rui also said that the application of this technology is very broad. In the future, in the fields of war trauma, accidental disability, beauty and body, there may be a "shadow" of computer-aided 4D printing surgery. (Li Pingfeng)

This article is scientifically controlled by Peng Guoqiu, director of the outpatient department of the Bayi Building of the First Affiliated (304) Hospital of the Chinese People's Liberation Army General Hospital.

Source: People's Network

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