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Wound retractors are available in a variety of sizes to match the surgeon's desired incision length and range from 2.5 to 25 cm. The smaller sizes (2.5 cm) are most frequently used in small animal MIS. The authors often use a SILS port through a 2.5 cm wound retractor for laparoscopic‐assisted abdominal exploratory and visceral biopsy. The use of wound retractors has been reported to facilitate a number laparoscopic and thoracoscopic procedures in veterinary medicine including abdominal explore and biopsy [14], gastrointestinal foreign body removal [10, 15], resection and anastomosis [16], splenectomy [17], cysterna cyhli ablation [18], pulmonary surgery [14, 19], and many hand‐assisted MIS procedures (ssss1, ssss1–ssss1).

(A).(B).(C).

ssss1 Use of a wound retractor in abdominal minimally invasive surgery.

ssss1 A wound retractor applies centrifugal force on the incision, greatly facilitating exteriorizing of intestines.

ssss1 Wound retractor in the chest.

Figure 4.32

A wound retractor can also be used with a laparoscopic cap (ssss1), which enables a laparoscopic approach before and after specimen retrieval.