| 主权项 |
1. A trocar mandrel, comprising
a head, a first mandrel having an elongated shaft, a proximal end of said first mandrel being mounted at said head, said shaft having a closed tip at its distal end, at least one second mandrel having an elongated shaft and a closed distal tip, a proximal end of said second mandrel being mounted at said head, said first and second mandrels are mounted at a distance one to another and project from a distal face of said head but do not project from a proximal face of said head, said head having a closed flat proximal cover surface extending in a single plane, a circumferential profile of said cover surface corresponds to a contour line completely enveloping said mandrels, and said first mandrel and said at least one second mandrel are mounted non-articulating at said head, wherein on that side of the head from which said mandrels protrude, abutments are arranged which limit a depth of insertion of a respective mandrel into a trocar sleeve. |
