Sigmoid resection, oncological, robotically assisted with medial-to-lateral approach

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  1. Positioning

    Positioning 1
    Positioning 2
    • Ideally, positioning is done in the lithotomy position on a large vacuum cushion (on the right side, the cushion supports the rib cage and iliac crest so that the patient's weight in right lateral position does not press on the arm.
    • It is recommended to adduct both arms (caution: cotton wrapping when positioning with a cloth sling)
    • Cotton wrapping of the knees and proximal lower legs is also performed to prevent pressure injuries.
    • For leg positioning, so-called "swan-fins" or padded "boots" are recommended, so that the legs can be moved separately and covered sterilely if necessary. Alternatively, the legs can be positioned in leg holders with fixation in these.
    • The legs should be adjustable via the OR table control during the procedure.

    Note: Positioning is of particular importance due to docking the patient to the robot manipulator. The risk of injury to the abdominal wall when the patient slips must also be considered. With coupled tables in the Xi system, intraoperative position changes are possible without undocking. In the absence of "Table-Motion" technology, the surgical robot must always be undocked and removed from the OR table before any position change.

    Caution: Vacuum cushions can have leaks. Therefore, they should be checked again before sterile draping.

  2. Trocar positioning and docking

    Video
    Trocar positioning and docking
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    Creation of a capnoperitoneum by inserting a Veress needle at Palmer's Point. The four 8mm robotic trocars are aligned in a straight line. The angle of the line corresponds to the connection of the intersection of the left midclavicular line/rib arch and the right femoral head. The line itself runs parallel 5-8 cm further to the right. Trocar 1 is located in the left epigastrium. Trocar 4 is two centimeters ventral to the right anterior superior iliac spine. Ideally, there is a distance of 8 cm between the individual trocars (minimum 7 cm to maximum 10 cm). The 12 mm assistant trocar is located 4 cm cranial to trocar 4 in the right anterior axillary line. The patient is positioned maximally to the right and moderately head down. The axis of the manipulator (laser marking) is aligned so that it points over the left anterior superior iliac spine to camera trocar 3. The arms are connected (docked) with the four 8mm robotic trocars. Subsequently, the instruments are introduced under visual control and parked under the ventral abdominal wall.

    Caution: The trocars must be positioned with the wide black ring at the level of the muscular abdominal wall (so-called remote control) to avoid injury during movement.

    Note: Ideally, the robotic trocars are inspected with the camera via the assistant trocar when introducing the robotic instruments. This allows the position of all robotic trocars to be easily checked again before the start of the operation.

    Note: Step 11 of the perioperative management provides an OR checklist up to docking, which can also be actively used in the operating room during the first procedures.

Preparation and transection of the vessels

The operation is performed using a Cadiere forceps through the cranial left trocar, with bipolar fo

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