| 摘要 |
A fastener delivery apparatus includes a nose assembly to releasably hold a fastener. The nose assembly includes a plurality of balls or rollers and associated biasing members to provide a biasing force which biases the balls or rollers such that they engage with the fastener. Each biasing member exerts force in a first direction and an associated ball or roller moves in a second direction which is different from the first direction. 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. |
