Читать книгу Veterinary Endoscopy for the Small Animal Practitioner - Группа авторов - Страница 26

Monopolar or bipolar radio‐frequency instrumentation is used to cut tissue and cauterize bleeding vessels. Standard radio‐frequency systems for traditional open surgery are usable for minimally invasive surgery with appropriate monopolar or bipolar cords connected to minimally invasive surgery instruments. Minimally invasive surgery hand instruments have a connector pin for monopolar electrosurgery (Figure 2.12). Adaptation of monopolar electrosurgery units for bipolar function is also possible with bipolar MIS instruments connected to the radio‐frequency generator with a special power cord that allows placement of one connector to the active socket and the other connector to the ground socket (Figure 2.13). This drives the current between the two sides of the instrument creating a bipolar instrument. Bipolar generators are also used with a power cord for this application. Monopolar and bipolar radiofrequency is capable of sealing vessels up to 3 mm in diameter and is sufficient for most minimally invasive surgery in small animal practice.

Figure 2.12 A minimally invasive surgery instrument with a connection post for monopolar electrosurgery. The connection post is the silver split projection at the top right of the pistol grip handle. This post is attached to the active side of the electrosurgery generator using a standard open‐surgery grounding plate for the inactive or ground connection.

(Source: Photo courtesy of Karl Storz: ©Karl Storz SE & Co KG, Germany.)

Figure 2.13 A minimally invasive surgery bipolar vessel sealing and cutting instrument, Karl Storz 5 mm diameter RobiPlus, with a connection post for bipolar cautery seen as a black cylinder projecting from the upper right of the instrument handle. This instrument is used with a monopolar generator and a power cord with two plugs, one that goes into the active socket, and the other goes into the ground socket. This instrument also works with a bipolar generator using a proper cord for this application.

(Source: Photo courtesy of Karl Storz: ©Karl Storz SE & Co KG, Germany.)