KIMM's System Conducts Sample Collection and Diagnosis Together

The Korea Institute of Machinery and Materials (KIMM) has developed a rapid, automated molecular diagnosis system integrated with a non-face-to-face specimen collection robot. 

The new system can collect specimens at the medical sites using a specimen collection robot in a non-face-to-face manner to prevent the spread of infectious diseases such as COVID-19, and can automatically complete high-speed molecular diagnosis in 40 minutes. This newly developed system is expected to lay the foundation for preventing the spread of new and variant infectious diseases in advance and strengthening the competitiveness of K-Bio diagnostics technology.

To develop this system, the KIMM research team led by Lee Dong-kyu, a principal researcher from the Department of Medical Devices at the Daegu Research Center for Medical Devices and Green Energy, and Seo Joon-ho, head of the Department of Medical Robotics (of the same Center), improved upon the sample collection technology of non-face-to-face samplings robot previously developed by KIMM. In addition to the existing sampling robot, by integrating rapid molecular diagnostic equipment, sample preparation technology of collected samples, and fast real-time PCR technology based on the rapid thermocycles, this system can now quickly and precisely conduct non-face-to-face procedures from sample collection to molecular diagnosis on site.

One problem with traditional molecular diagnostic equipment is that it takes 1 to 2 hours or more to obtain analysis results. To solve this problem, attempts have been made to utilize photothermal-based and microfluidics-based rapid thermocycle technology. However, it is difficult to manufacture at low cost and quantitatively analyze in real time, thus limiting their on-site applications.

On the other hand, the KIMM research team’s newly developed rapid, automatic molecular diagnostic system, integrated with a sample collection robot, can obtain real-time PCR analysis results within 9 to 20 minutes at a speed 4.2 times faster than existing molecular diagnostic equipment. This is achieved by using a customized thermocycler that uses preset heating and cooling blocks in turn.

The KIMM research team performed validation tests using this new system by conducting diagnosis of pathogenic bacteria and infectious coronavirus. From sample collection to molecular diagnosis, bacterial DNA analysis was completed within 25 minutes and coronavirus RNA within 40 minutes. The molecular diagnosis results obtained using this new system were similar to those obtained when using commercial molecular diagnosis equipment.

The new system is a non-face-to-face system that applies automatic diagnostic technology throughout the entire process of sample dispensing, sample preparation processing, and rapid molecular diagnostics after sample collection, so that even unskilled users can quickly conduct diagnostics on site. When used in public health and medical settings such as screening clinics, airports, and emergency environments, the spread of new and variant infectious diseases can be quickly and accurately prevented in advance.

Lee said, “The rapid, automatic molecular diagnosis system integrated with a non-face-to-face sample collection robot will prevent the continuous spread of new and mutated infectious diseases, while also protecting medical staff and the health of the general public.” He added, “KIMM will work with medical institutions and industries to globalize K-Bio technology, prevent the spread of new and mutated infectious diseases, and strive for R&D efforts with the goal of protecting the healthy lives of everyone in Korea.”