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First Wooden Toe was found on an Egyptian mummy and shows some of the earliest bio-medical engineering.
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Wound treatment started with three basic principles wash wound, apply cast, and bandage. Through to today's treatment of wounds with Band-Aids and antibiotics.
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Ear trumpet was the earliest form of hearing aid and was considered to be the only 'viable' option of hearing assistance until the electric hearing aids were invented.
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The Thomas Splint to help people heal from hip, knee, and leg joint injuries.
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Crutches patented to help wounded soldiers returning from WWI.
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The Band-Aid was invented by someone who put gauze on sticky tape so that his wife could get it when needed.