Multi-trocar system

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.

2. The trocar mandrel of claim 1 , wherein a diameter of said first mandrel differs from a diameter of at least one of said second mandrels.

3. The trocar mandrel of claim 1 , wherein said closed flat proximal cover surface of said head serves as a grip.

4. The trocar mandrel of claim 3 , wherein said head, seen onto said proximal cover surface, is designed as a rounded body.

5. The trocar mandrel of claim 1 , wherein at least one of said mandrels is mounted releasably on said head.

6. The trocar mandrel of claim 1 , wherein said abutment is designed as a stub projecting from said head, and wherein a proximal end section of a mandrel is received in said stub.

7. The trocar mandrel of claim 1 , wherein openings are recessed in said head, into which openings a proximal end section of a mandrel can be received.