Artificial muscles for better beats heart implant – When you think of a heartbeat , perhaps you just imagine how it decreases and increases just like a rubber ball is compressed by an invisible hand . However, in reality the movement of the heart are more similar to the way you squeeze the towel , that is upper part of the body is twisted clockwise , and the lower – counterclockwise . This process is known as torsion of the left ventricle , and scientists were able to reproduce it using artificial muscles. Study could be the result of improved cardiac implants work . Artificial muscles – heart beats for better implant.
Work was carried out by scientists from the Institute of bioengineering faculty at Harvard University Wyss (USA) , as well as the School of Engineering and Applied Sciences at the same university .
They began their study with what is called the pneumatic artificial muscles or air muscles ( VM).
Modeled striated muscle fiber, which is in the heart, these muscles are made of silicone elastomer with embedded braided mesh , is connected to the air tube .
When air enters the VM , the latter twists , respectively , becoming shorter. This is very similar to natural fibers, which interact in the same way – twisting and cutting.
Then some air muscles were placed inside a matrix of the same elastomer that makes up the first .
Using process control of their orientation relative to each other, as well as the volume of sample add various pressures to various muscles , scientists have been able to ensure that some of the HMW curled in one direction and the others – in the opposite direction.
As a result, the silicone matrix showed the same three-dimensional twist , and that the real heart .
Possible use that immediately comes to mind – is implanted devices that can help or even completely replace a diseased heart . In addition, by disabling certain muscles , it was possible to play with the motion of the heart diseases. This can be useful in the models used to develop treatments for such conditions.
Scientific paper describing the study were recently published in the journal Advanced Materials.
You can look at a prototype with integrated air muscle to work on the video below .