Patent ID: 8690761

Claim:
A minimal invasive neurosurgery assembly comprising: a flush assembly having flush assembly main part with a distal end and a proximal end and with a central passage extending through the main part from the distal end to the proximal end along a longitudinal axis; at least one tool insertion assembly including: a tool handling part detachably connectable to the flush assembly main part, the tool handling part having a distal end and a proximal end and at least one tool insertion channel that extends from the distal end to the proximal end of the tool handling part; and an inner sheath connected to the tool handling part, the inner sheath having an inner sheath wall and at least one lumen extending parallel to the longitudinal axis and in which an associated one of the at least one tool insertion channel emanates, the inner sheath being insertable through the central passage of the flush assembly main part, wherein the flush assembly main part includes: at least one ring channel that extends circumferentially around the central passage and that is formed by an associated portion of the central passage at an axial position of the central passage that has a diameter that is larger than the diameter of the central passage, at least one connecting nipple configured to connect a flushing tube; and at least one flush channel extending through the connecting nipple to the associated ring channel and emanating in the ring channel; and wherein the inner sheath includes: at least one flush lumen extending parallel to the longitudinal axis; and at least one flush passage extending through the inner sheath wall and emanating in an associated one of the at least one flush lumen, the flush passage being positioned at a longitudinal position of the inner sheath that corresponds with the position of an associated one of the at least one ring channel when the tool handling part is connected to the flush assembly main part so that a fluid connection is present between the at least one flush channel extending in the associated connecting nipple and the associated lumen.