Chinese scientists have developed a visual "heart chip"
Today, the reporter learned from Southeast University: Professor Zhao Yuanjin, the national key laboratory of Bioelectronics of the School of Biomedical Engineering, recently developed a color-changing "heart chip" that can simulate the beating and contraction of cardiomyocytes in vitro. Provide a new platform for drug screening and single cell biology research. According to reports, "organ chip" is to biomake micro-organs on microfluidic chips to replace organisms, drug evaluation and biological research. As an important development trend of building a new drug evaluation system in the future, "organ chip" has great strategic significance for supporting the development of innovative drug research and translational medicine in China. The heart is the most important organ of the human body. Therefore, the construction of a "heart chip" with cardiomyocyte sensing function is an important part of the development of "organ chip". "After injecting drugs into cardiomyocytes, we can observe the activity of cardiomyocytes after observing the range and frequency of color changes of elastic films. When the speed of myocardial beating is faster and the strength of contraction is greater, then the elastic film is The color also changes faster.†Zhao Yuanjin introduced the “living body†structural color hydrogel material into the microfluidic chip and developed a “heart chip†with microphysiological visualization. It is understood that this technology has unique advantages in myocardial-related new drug evaluation and disease research, and is more economical, faster and non-invasive than conventional clinical trials. It is an organic fusion between clinical and theoretical foundations. Multidisciplinary research results. The research results were published in the international top journal Science·Robotics on March 29th. This is the first publication of Science and Robotics independently completed by Chinese scholars. (People’s Daily Yao Xueqing)
The foot and ankle locking plate is a special-shaped plate specially developed for calcaneal and ankle fractures, which is in line with the anatomical structure of the calcaneal and ankle joints.
During the postoperative treatment process, it can reduce the stimulation of surrounding tissues and promote bone healing.
The calcaneus is the largest of the seven tarsal bones and is located on the lower back of the foot, forming the heel. Calcaneal fractures are relatively rare, accounting for 1% to 2% of all fractures, but are important because they can lead to long-term disability. The most common mechanism of severe calcaneal fractures is axial loading of the foot after a fall from height. Calcaneal fractures can be classified into extra-articular and intra-articular fractures. Extra-articular fractures are generally easier to assess and treat. Patients with calcaneal fractures often have multiple comorbid injuries, and it is important to consider this possibility when evaluating patients.
The ankle joint is composed of the articular surface of the tibia, the lower end of the fibula, and the talar trochlea, so it is also called the talar calf joint. Ankle fractures, including fractures of the medial malleolus, lateral malleolus, posterior malleolus, or fractures of varying degrees occurring simultaneously, are due to greater violence to the medial and lateral malleolus. At the same time of both ankle fractures, the talus directly impinges posteriorly or impinges on the tibia when displaced by external rotation. Fracture of the posterior malleolus due to the posterior margin.
Foot Mini Locking Plate is composed of 2.7mm series of mini locking plate, covering a variety of plate types, widely used in trauma fixation and orthopedic surgery of the forefoot. Anatomical design of bone plate to reduce the need for shaping.
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