BACKGROUND: We developed a new ultrasonically activated device (USAD) for endoscopic surgery. The current investigation was conducted to evaluate the security of the arteries occluded and divided by this USAD. METHODS: The intraperitoneal arteries of anesthetized living pigs were individually occluded by the USAD at power levels of 70% or 100%. The burst pressures of the harvested arteries were measured in vitro. For comparison, arteries occluded by laparoscopic clips or silk ligatures were evaluated in the same manner. RESULTS: The pressures to burst the occluded artery ranged from 353 to 2,148 mmHg with an average of 1,204 mmHg in the USAD group at 70% power level; from 324 to 2,207 mmHg with an average of 1,193 mmHg in the USAD group at 100% power level; from 794 to 1,868 mmHg with an average of 1,421 mmHg in the clip group; and from 618 to 3,207 mmHg with an average of 1,586 mmHg in the silk ligature group. CONCLUSION: The data suggest the improbability that small- to medium-size arteries appropriately occluded and divided by the USAD can burst when exposed to intravascular pressures commonly found in living animals.
BACKGROUND: We developed a new ultrasonically activated device (USAD) for endoscopic surgery. The current investigation was conducted to evaluate the security of the arteries occluded and divided by this USAD. METHODS: The intraperitoneal arteries of anesthetized living pigs were individually occluded by the USAD at power levels of 70% or 100%. The burst pressures of the harvested arteries were measured in vitro. For comparison, arteries occluded by laparoscopic clips or silk ligatures were evaluated in the same manner. RESULTS: The pressures to burst the occluded artery ranged from 353 to 2,148 mmHg with an average of 1,204 mmHg in the USAD group at 70% power level; from 324 to 2,207 mmHg with an average of 1,193 mmHg in the USAD group at 100% power level; from 794 to 1,868 mmHg with an average of 1,421 mmHg in the clip group; and from 618 to 3,207 mmHg with an average of 1,586 mmHg in the silk ligature group. CONCLUSION: The data suggest the improbability that small- to medium-size arteries appropriately occluded and divided by the USAD can burst when exposed to intravascular pressures commonly found in living animals.
Authors: Aleksander Konturek; Marcin Barczyński; Małgorzata Stopa; Wojciech Nowak Journal: Wideochir Inne Tech Maloinwazyjne Date: 2012-09-27 Impact factor: 1.195