China3D printingNet February 1st, researchers from the US Air Force Research Laboratory (AFRL) in Dayton, Ohio3D printingThe nose simulator applied for a patent.
The faceless beak is called a nose simulator with multiple sampling modes and can be used for airflow assessment. It is intended as an accurate scientific replica of the upper respiratory system, allowing researchers to assess the impact of air quality on respiratory physiology. Angela Dixon and Saber Hussain, the inventors of AFRL, believe3D printingThe nose is very useful for studying the hazards related to breathing (such as hypoxia, nanoparticles in the air and volatile organic compounds).
The researchers pointed out: “Different from typical nasal cavity molds, this innovative biological hybrid upper respiratory tract model can more accurately represent physiological respiratory function and perform spatial-temporal related tissue analysis. Here, we have combined electronic and biological elements. Together to develop a robotic biological hybrid.”
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3D printingNose simulator. The picture comes from the American AFRL.
Copy human nasal cavity
The internal anatomy of the human nose is more complicated than people initially expected. Of course, it has been tried before, but bioengineering systems built to simulate the complexity of the nasal cavity are rarely accurate enough to be used in advanced air quality research. In addition, although previous models were primarily created by studying people who donated their bodies to science, the rise of modern 3D and CT scanning technology allows us to collaborate with volunteers who are still alive.
Therefore, the nose of AFRL is based on the diagnostic image of real human nasal cavity and is designed to be used in Stratasys PolyJet and Carbon DLS 3D printingPrint on the machine. In order to give the device the ability to breathe spontaneously, the researchers also connected a fan system to simulate realistic airflow.
Inside the nose is a set of airflow probes designed to detect parameters such as air velocity and detect specific nasal tissue interactions. This is used to map where and when the inhaled gas and particles come into contact with the gap in the nose.
Looking deeper into the nostrils, we can actually see that the simulator includes eight independent modular slides with probe holes to accommodate the sensors. Each part of the stack allows researchers to study very specific parts of the nasal cavity and seal them together with air-tight gaskets to form a continuous channel.
The researchers came to the following conclusion: “We are working hard to improve the achievement standards of bioengineering technology by promoting the development of more lifelike robotic devices that provide humans with inherent advanced mechanical functions and biological structures in a dual manner. The ongoing work will include characterization The achievable flow rate in the device verifies the nose simulator system.”
The nose is connected to the fan system to simulate inhalation. The picture comes from the American AFRL.
U.S. Air Force applications3D printing
Although the nose simulator may be considered a bit out of reach, it is a3D printingOne of the related items.Last year, a research team in the U.S. Air Force used benchtop resins3D printingMachine design and3D printingA surgical retractor. The medical device is designed to be used in environments with difficult logistics, where it is not always possible to restock medical supplies using conventional methods.
Elsewhere, at the Air Force Maintenance Center, a team of engineers became the first to successfully test the engine of a US Air Force aircraft.3D printingEngineer of metal parts. This milestone bodes well for the production of spare parts for the TF33-P103 engine, which powers aircraft such as the B-52 Stratofortress.
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