Release date: 2015-07-10
A few days ago, foreign media reported that the US Department of Defense allocated $8.5 million to support the research and development of 4D printers at the International Nanotechnology Institute of Northwestern University; the device will be able to operate at the nanoscale.
With the deep development of nanotechnology and digital manufacturing in the fourth dimension space, 4D printed objects can enter a very small space for "work" by virtue of their self-assembly and deformation capabilities. This will lead the application and development of 4D printing in the field of biomedicine, especially cancer treatment.
1, 4D printing human body "guardian"
With the support of nanotechnology, 4D printed non-therapeutic nano-robots will be able to assume the role of the human "guardian" and conduct 24-hour round-the-clock patrol work in the human body.
On the one hand, the human body "guards" can timely clean up the residual "garbage" in the body, especially in the blood vessels, and excrete it with the metabolism; on the other hand, more importantly, it can detect the cancerous potential in time. The cells, and the first time to issue an early warning or directly kill it in the "cradle" to ensure the stability and harmony of the internal environment.
2, 4D printing anticancer drugs
In view of the fact that 4D printed matter can undergo self-deformation under certain media, we can specifically set different cancer viruses as media sources for triggering 4D printed cell deformation during the development of anticancer drugs. When this 4D printed cell encounters cancer cells in the human body, it will automatically trigger the deformation function, directly phagocytize or release the cancer cells to destroy it, and destroy the human body by self-decomposition after the task is over. Excreted from the body.
As an important research direction of cancer treatment, 4D printing anticancer drugs can even prevent cancer treatment from being unburned.
3, 4D print organ bracket
4D printed objects can exert unlimited potential in tiny spaces due to their self-deforming ability. In the course of cancer treatment, we can replace or repair damaged cells and tissues with 4D printed organs or stents.
Taking a biological heart stent as an example, a novel biological heart stent generated by 4D printing can enter the body in an extremely small form, and then expand into a hollow stent that can be expanded in a suitable environment in the body. The bracket is just like the 4D printed sewer pipe. It can adjust the capacity and flow by expanding or reducing the pipe radius. It can even repair itself when it is damaged or decompose it when it is scrapped.
4, 4D printing human skin
Recently, scientists in the Netherlands have realized the use of stem cells as ink for 3D bioprinting of human skin, which has also opened the curtain of 4D printing human skin. Relying on the self-deforming properties of editable materials, the 4D printed skin that fully blends the individual skin characteristics will achieve the maximum fit in the process of replacing human skin with cancer or burns, which will greatly enhance cancer or other The cure rate of patients with skin diseases.
5, 4D printed bio-tissue implant
Previously, researchers in Melbourne had found a way to generate "own" cartilage for cancer treatment and replacement of damaged cartilage. On this basis, scientists can use the editable material to incorporate the genetic parameters of the human DNA strand during the editing process, and on this basis, 4D printed bio-tissue implants can minimize the human body. Rejection; and, in the event of an adverse reaction, the implant can be self-changing according to the actual environmental conditions in the human body to adjust the optimal solution for the human body.
6, 4D printing medical equipment
Cancer treatment is the process of saving lives, but it is also the process of life. Because modern medical treatment kills cancer cells through radiotherapy, it also kills many healthy cells that are useful to the human body. In this treatment process, if the cancer cells can be isolated and more precise radiological localization, thus effectively killing cancer cells without causing damage to the human body, it will be very helpful to improve the success rate of cancer treatment.
4D printed radiotherapy treatment aids and other medical devices will play an active role in this regard. These 4D printed medical devices can enter the human body through a small volume, deform according to the living environment of different parts of the human body, effectively isolate cancer cells and protect healthy areas, making cancer treatment "harmless". Especially for some important organs or vulnerable areas, such as the nose, eyes, ears and other parts of the tumor treatment, will be more important.
The application of 4D printed objects in the field of biomedicine, especially to the human body, is undoubtedly the gospel of human health medical development. However, when we are happy, we must calmly realize that the risks involved should not be underestimated. For example, 4D printed cells or nano-robots that swim in the human body can easily evolve into prototypes of biological weapons used by bad people if they are not monitored. The self-deforming properties of editable materials make it more risky for criminals to use than 3D printing. For example, for prohibited items such as guns, 3D printing is directly specific and relatively easy to be discovered and controlled; while 4D printed materials may be in any form at the beginning of printing, only under certain circumstances and media. Will "deform" into a pre-set real face. It can be said that people can't prevent it.
Source: Creation
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