Patent ID: 8100861
Filing Date: 2012-01-24
Classification: A61B,A61F

Abstract:
1. A kit, said kit comprising a trocar and an instrument which is designed for ophthalmology and can be guided through a trocar comprising said trocar, which comprises a cannula with a centre axis, a flange formed integrally on this cannula, an opening extending along the centre axis through the cannula, and a receiving opening that extends along the centre axis through the flange, said opening and said receiving opening forming an opening that runs all the way through the trocar, wherein a seal is arranged in the receiving opening of the trocar, wherein said seal comprises: a seal element, having a seal opening, a first side and a second side; an instrument opening, which instrument opening extends along a centre axis on said first side and said second side of the seal element all the way through the seal; and a clamping element for establishing a form-fit connection to an instrument that is inserted at least partially into the instrument opening and through the seal opening; wherein said instrument comprises a clamp section that is complementary to said clamping element, wherein said clamping element or the instrument or both being designed in such a way that they can be compressed during insertion of the instrument into the seal and such that the original shape of these parts can be recovered when a predefined depth of insertion is reached, such that the surface of said clamping element is in contact with the surface of the complementary section of the instrument, such that a form-fit connection is established between said clamping element of said seal and said clamp section of said instrument.