New surgical tool inspired by wasps 

Scientists in the Netherlands have developed a prototype surgical tool
for keyhole surgery, based on egg-laying methods of parasitic wasps

Parasitic wasp inserts eggs into unsuspecting host insect dwelling within tree

Segments
1 2 3
Egg canal
Ovipositor: Eggs propelled down hollow tube by friction created from movement of three sliding segments

Brass outer tube 

PROTOTYPE INSTRUMENT
Similar to ovipositor, six blades slide independently of each other, creating friction which transports tissue along tool

Clamps
Matchstick to scale
Diameter adapters

CURRENT INSTRUMENTS
Minimal Invasive Surgery devices use suction to remove tissue, but narrow pipes can become clogged

Device could also be used for internal radiotherapy, with small amount of radioactive material inserted into specific area for targeted treatment of cancer


Blades
 
As one blade moves forward, remaining five move backward for maximum friction 

Cancerous tissue could be removed from previously inoperable areas

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Source:FrontiersinBioengineeringandBiotechnology Picture:CreativeCommons ©GRAPHICNEWS