Abstract: The invention relates to a valve arrangement for surgical instruments, particularly trocars, such as those used for minimally invasive operations, e.g. operations involving laparoscopic techniques. The invention also relates to a valve cage for accommodating the valve arrangement. The valve arrangement comprises a valve body made of closed-cell, gas-tight foam material having at least one slot, which passes through the valve body and which is provided for introducing a surgical instrument guided inside the trocar. The valve cage is provided in the form of a housing whose shape and size are adapted to the outer dimensions of the valve body. The housing can be joined to a conventional trocar sleeve in a sealed and detachable manner.

Abstract: The invention relates to a valve arrangement for surgical instruments, particularly trocars, such as those used for minimally invasive operations, e.g. operations involving laparoscopic techniques. The invention also relates to a valve cage (18) for accommodating the valve arrangement. The valve arrangement comprises a valve body (1) made of closed-cell, gas-tight foam material having at least one slot (7), which passes through the valve body and which is provided for introducing a surgical instrument guided inside the trocar. The valve cage is provided in the form of a housing whose shape and size are adapted to the outer dimensions of the valve body. The housing can be joined to a conventional trocar sleeve in a sealed and detachable manner.

Abstract: The invention relates to a device to seal and lubricate instruments inserted into trocar tubes, having a sealing cover that can be connected to fit exactly to the insertion end of the trocar tube and has at least one lining lip. The invention is characterized in that a member of porous or fleece-type material that can be moistened with a lubricating agent is mounted in the sealing cover and engages at least partially with the outer circumference of an introduced instrument.