Universal connector socket

1. A universal connector socket for a surgical apparatus for the connection of plug connectors of surgical instruments for radio-frequency surgery and having several plug contact openings for receiving contact elements of a plug connector, comprising:

a plurality of plug contact openings arranged in an at least partially overlapping manner for selectively connecting monopolar surgical instruments and bipolar surgical instruments, the plurality of plug contact openings defining an unambiguous plug-in position for a plug connector; and

a shared reference plug contact opening for different plug connectors, wherein the shared reference plug contact opening is arranged separate from the plurality of plug contact openings.

2. The universal connector socket of claim 1 , wherein at least one of the plurality of plug contact openings has a plurality of electrically separate contact areas for contacting a contact element.

3. The universal connector socket of claim 2 , wherein the plurality of electrically separate contact areas are configured for contacting a contact element configured in the manner of a lug jack and having a plurality of electrically separate contact areas arranged in an axial direction of the contact element.

4. The universal connector socket of claim 1 , further comprising at least one plug detecting device for detecting a plug connector present in the universal connector socket.

5. The universal connector socket of claim 4 , wherein the at least one plug detecting device comprises at least one additional contact pin, at least one Reed contact, or at least one microswitch.

6. The universal connector socket of claim 1 , further comprising an instrument detecting device for detecting the type of surgical instrument connected to the universal connector socket.

7. The universal connector socket of claim 1 , wherein at least two plug contact openings of the plurality of plug contact openings are provided at a distance of 22.0 mm from each other.

8. The universal connector socket of claim 1 , wherein at least two plug contact openings of the plurality of plug contact openings are provided at a distance of 28.5 mm from each other.

9. The universal connector socket of claim 1 , wherein a cross-section of a plug contact opening formed of two overlapping plug contact openings of the plurality of plug contact openings is different from a cross-section of the shared reference plug contact opening.

10. The universal connector socket of claim 9 , wherein a width of the cross-section of a plug contact opening formed of two overlapping plug contact openings of the plurality of plug contact openings measured in longitudinal direction of the center axis the universal connector socket is greater than the width of the cross-section of the shared reference plug contact opening.

11. A plug and socket connection, comprising:

at least one plug connector that has at least two contact elements; and

an universal connector socket, comprising:

a plurality of plug contact openings arranged in an at least partially overlapping manner for selectively connecting monopolar surgical instruments and bipolar surgical instruments, the plurality of plug contact openings defining an unambiguous plug-in position for the at least one plug connector; and

a shared reference plug contact opening for different plug connectors, wherein the shared reference plug contact opening is arranged separate from the plurality of plug contact openings.

12. The plug and socket connection of claim 11 , further comprising at least one contact comprising a contact pin and at least one additional contact comprising a socket, wherein the contact pin and the contact socket comprise a plurality of electrically separate contact areas, wherein the contact socket is allocated to the plug contact opening and the contact pin is allocated to the contact element.