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Automation In The Medical Field

The advancement in technology and medical automation has led to the increased use of linear actuators in the medical field that has continued to render pneumatic and hydraulic systems obsolete. The use of actuators will vary depending on their sizes that range from the tiny ones (2” strokes) to the large ones (24” stokes). Other than changes in technology, several other contributing factors have necessitated increased actuators in the health sector. Key reasons for the increased usage of actuators in the medical field First, the size of a machine is a factor to consider when deciding the technology to use. Actuators are appealing in size, especially compared to hydraulics that can yield a similar amount of strength. Secondly, when in action, actuators produce less noise as compared to pneumatic and hydraulic solutions. The hiss and gurgle sound found in pneumatics and hydraulics do not exist in actuators that have triggered their continued use.  The photo below is a sample of the actuator’s wheelchair. Another positive factor that has contributed towards the use of actuators is that they are precise. Pneumatic pistons can be positioned correctly at either full extension or retraction. Lastly, actuators have fewer moving parts implying that fewer…

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Working In Medicine (Without Being A Nurse)

Many people who want to jump into the healthcare profession are not particularly interested in nursing, where the work can be backbreaking, very dramatic or very dull. It can also involve internal medicine, which may not be your cup of tea. So, what do you do? If you’re looking for rewarding work, but don’t really care for the sight of blood or have worries about the heavy lifting involved in nursing, try these technical job ideas out for size. After all, income levels for peripheral healthcare technicians, such as radiation therapist or sonogram technician, are holding up well, because of the high demand training. Here are some job ideas for smart folks who don’t necessarily care for a traditional job as a nurse or a doctor:

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Blue Laser – The New Alternative Treatment for Autism Care

Life as a human being is full of many unpredictable events. We always have the risk of getting numerous types of diseases at any time. Although health and medical’s technology have been growing in leaps and boundaries, many conditions remain uncured until today… A recent study has been shown that the blue laser has the power to cure autism. A research group from MIT had carried out an experiment where they shined the blue laser onto a live mouse brain directly. They discovered that the gamma waves are triggered in the mouse’s brain, where the primary brain wave can be used to cure autism. The research group called the specific neurons that trigger gamma waves “Fast-spiking interneurons.” Although scientists have known about gamma waves for over decades, they’ve lacked the technology to prove their theory. They also mentioned that people with autism are mainly caused by the inadequate gamma waves in their brains. One of the best solutions to overcome this problem is to trigger gamma waves in people with these psychiatric conditions as soon as possible! More research has to be done before the blue laser could cure autism in the future. [discovery]

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Top 5 Magnificent Implants!!

In the present era, medical implants have advanced at an amazing pace. Many new technologies have been used in this field, and operations such as radioactive seed implant, erections being created using hydraulics, plugging of a heart into a wall have been successfully performed. Here are the top 5 exquisite implants being picked. 5. Radioactive Seed Implantation These implants are called brachytherapy. They are used to cure early-stage cancer. This is performed by implanting small-sized radioactive seeds into the prostate using a needle. These seeds emit radioactive radiations, which are similar to external radiations. These emissions attack the tumor. The radiation travels for a short distance and does not affect the prostate region, unlike radiotherapy. 4. Bionic Eye Nowadays, restoring sight can be performed in many ways. One of the most reliable and the best methods for the above operation is the Bionic Eye.

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Are we bionic?

Bionic refers to applying biological ways and systems seen in nature to design and study the engineering systems. A bionic human would refer to human whose worn out parts can be repaired and refitted into the body. We cannot say that the whole of the human body is replaceable, but most parts can find replacements. There are replacements for human bones, teeth, vertebral discs. All these can be designed as per persons size and age. The tailored pants can be drawn in a few hours in a 3D printer to fit into the damaged parts. A device can even print a bone using a porous polymer that looks very real. The artificial bones may not be perfect and same as the natural bones. To give strength, we can add titanium powder with a laser. This would create pores on the bones, and the pores would be of different size and depth, making it look more natural, and these pores give strength and stiffness to the artificial bones. There are ways even to improve implants enabling tissues and bones to regenerate. There are lab results showing cartilage growth through artificial ways in labs. By such a process even damages such as…

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Digital Signal Processing – Applications

Digital signal processing is the technique used to analyze various digital signals and obtain information from the same. It is also used to transfer information from one place to another and involves conversion between analog and digital signals. It finds its application in various areas ranging from broadcasting to medicine. Let us have a look at some of the applications of the same. Biomedical Applications DSP is used extensively in the field of biomedicine. In it, the various signals generated by the different organs in the human body are measured to find information regarding the health of the same. For example, in the case of electrocardiograms, the electric signals generated by the heart are measured. Similarly, the activity of the brain is monitored by electroencephalograms. Automatic Control These days, many gadgets are available that can perform their tasks automatically. These devices contain various components that can take inputs depending on the surrounding conditions. These are conveyed to the device’s control unit, where they are processed, and the necessary action is taken. For example, a device like a thermostat increases its resistance in proportion to temperature. This can be used to stem the current in a machine whenever the temperature rises.

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Removing 60Hz from ECG using digital band stop filter

Let’s make a filter, which filters off the 60Hz frequency from the ECG signal. As we know, the American power supply is 60Hz. This is a common noise in biomedical signals while the industrial power supply powers them. This type of noise can be defined easily and can be filtered as parameters of noise are known.Here is one example of how to implement an FIR filter using mathematical tools, like Matlab. This can be done using a microcontroller, like ARM or even AVR, because the frequencies are up to 1 kHz.Initial conditions: f0=60Hz – power supply frequency;fs=500Hz – sampling rate;frequencies who define complex zeros: we get w0=0.754;Positions of complex zeros: Zeros and poles in z plane System Function From it we can calculate filter coefficients: And filter coefficients: b3 = 1; b2 = -2cos(w0); b1 = 1 Also we know that: And here we get filter characteristics: We have a band stop filter at 60Hz, and its jam at 60Hz is -300dB. Bellow is a filter structure: Now using this filter we can filter ECG signal: As you can see, this is a simple FIR filter. In other words, there is nothing more than an average function that doesn’t need…

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