| 摘要 |
A fastener delivery apparatus comprising a nose assembly configured to releasably hold a fastener; wherein the nose assembly comprises a plurality of balls or rollers and associated biasing members configured to provide a biasing force which biases the balls or rollers such that they engage with the fastener, wherein each biasing member is configured to exert force in a first direction and an associated ball or roller is configured to move in a second direction which is different from the first direction, and wherein a force transfer surface is provided between the ball or roller and the biasing member, the force transfer surface acting to convert at least a component of the force exerted by the biasing member in the first direction into force exerted on the balls or rollers in the second direction. |
