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Report identifies three bio-engineered products that have been developed during the last 50 years, and, that have had a marked impact on people

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Introduction

Assessment Task 4 Abstract This report identifies three bio-engineered products that have been developed during the last 50 years, and, that have had a marked impact on people. The report will then proceed to describe this impact and what effect these products have had on the quality of people's lives. As well as this, the report will trace the history of the products, and how they have developed in response to developments in materials and related material-forming processes. Introduction The human body is a complex machine, capable of adaptation to most environments and recovery from many illnesses. Nevertheless, it is not invincible. In fact, it is far from it. The body can suffer from diseases and injuries that may permanently disable or even cause death. To counter this problem, bio-medical engineers are constantly improving and reinventing products that can be used to replace and treat human deficiencies. Three of these products include the: Totally Artificial Heart (TAH), Bionic Ear and Artificial Limbs. In modern society, these products have a marked influence on people. They have helped people to lead almost normal lives and have given them opportunities in life which they otherwise might not have had. ...read more.

Middle

Polyurethane far exceeds the amount of elongation necessary to withstand the vibrational cycles of the TAH. Segmented polyurethane's level of water absorption, 1.5% (very low), ensures that water will not seep into the chamber of the total artificial heart. However, one drawback of this material, like in materials used in the Jarvik-7, is that it still promotes thrombosis and bacterial infection. To minimize the possibility of defects, the polyurethane is hand poured over moulds in order to create the TAH. A clean room environment for fabrication is also utilized to avoid contamination of the polyurethane by extraneous material. Polyurethane has greatly helped in the development of artificial hearts, as it exhibits almost all the mechanical and physical properties needed by the artificial heart. Artificial limbs Effect on people's lives The dramatic impact that prosthetic limbs have had on the quality of people's lives can not be undermined. Prosthetic limbs have allowed many people to lead a normal life, and given them freedom from crutches and wheelchairs. Today, development in materials has allowed users of prosthetic limbs to reach a new phase in freedom. Their strength, flexibility and impact absorption enables users to access all types of terrain and areas. ...read more.

Conclusion

The person could recognize it as speech, but had difficulty in interpreting their meaning. With the development of sound absorbent materials, such as plastics and advanced composites, bioengineers were able to further develop the bionic ear. The resulting design allowed users to hear sounds better, with improved clarity and volume. The development of semiconductor materials, such as silicon, enabled the improvement of integrated circuits. Thus, circuits were developed for the bionic ear. This new technology meant that the bionic ear could become smaller. It also allowed many more components on a single chip, thus increasing efficiency. The latest technology utilized by the bionic ear is known as the 'intelligent polymers'. These plastics allow optimum hearing efficiency and clarity, by absorbing, directing and amplifying incoming sound waves. This technology has been a huge step forward in further development of the bionic ear. Conclusions Modern biotechnology is far from prefect. There is still research that is conducted in an effort by bioengineers to develop new material more suitable for products. Research has also been conducted into material forming processes to develop products. Nevertheless, the development of materials has progressed a long way. The TAH, Artificial limbs and Bionic Ear are just some of the examples which portray this development. As research and development of materials continue, these, and other bioengineered products, are sure to improve to suit peoples needs. ...read more.

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