ANTONIA REEVE / SCIENCE PHOTO LIBRARY ANTONIA REEVE / SCIENCE PHOTO LIBRARY
Keyhole surgery instruments. These are designed to be used through a small hole in the body near the area to be operated upon. The cutting scissor-like instruments seen along right are operated by the handles (not seen) at the other end of the long rods. Specialised training is needed, but there is decreased patient recovery time. This is because keyhole surgery is less traumatic than opening up the body to carry out the surgery. A common use is in keyhole heart surgery to replace defective heart valves. The coiled tube is used to introduce balloon clamps into blood vessels. The instrument at centre right is used to inject carbon dioxide into the area around the heart.
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