trocars การใช้

• In modern times, surgical trocars are used to perform laparoscopic ( keyhole ) surgery.
• The Hancock trocars for creating a hole in the left ventricle are rarely used clinically.
• Prior to the description of the Seldinger technique, sharp trocars were used to create lumens through which devices could be passed.
• Most importantly, it is easy to convert SILS to conventional laparoscopy by adding a few trocars; this conversion to conventional laparoscopy is called'port rescue '.
• Special articulating instruments and access ports make it unnecessary to place trocars externally for triangulation, thus allowing the creation of a small, solitary portal of entry into the abdomen.
• Hancock Laboratories, now part of Medtronic ( Minneapolis, MN ), developed and released a set of left ventricle connectors, valved conduits, and installation trocars in the 1970s.
• The terrible triangle is that formed by three trocars ( sharp hollow tubes ) stuck through three tiny incisions that give access to the inside of the abdomen without cutting open the patient.
• Today, surgical trocars are most commonly a single patient use instrument and have graduated from the'three point'design that gave them their name, to either a flat bladed'dilating-tip'product, or something that is entirely blade free.