Articles de revues : « Ultrasonic dissection »

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Payne, J. H. « Ultrasonic dissection ». Surgical Endoscopy 8, n^o 5 (mai 1994) : 416–18. http://dx.doi.org/10.1007/bf00642445.

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Goto, Tetsuya, Yusuke Fujii, Yoshiki Hanaoka, Kazuhiro Hongo, Jun Okamoto, Yoshihiro Muragaki et Toshihiro Ogiwara. « Usefulness of a Newly Developed Ultrasonic Microdissector in Neurosurgery : A Preliminary Experimental Study ». Journal of Neurological Surgery Part A : Central European Neurosurgery 80, n^o 02 (24 décembre 2018) : 096–101. http://dx.doi.org/10.1055/s-0038-1675782.

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Background Dissection and division of tissues are widely performed in microscopic neurosurgery, especially in brain tumor resection. Dissection maneuvers can be divided into two types: sharp dissection with microscissors and blunt dissection using a dissector. It is essential to use the appropriate method according to the intraoperative situation and conditions. Therefore, specific tools for each type of dissection maneuver are required. We developed an ultrasonic microdissector, a newly designed tool that functions as both microscissors and dissector to further advance brain tumor surgery. This preliminary experimental study was performed to evaluate the usefulness of this new device. Methods Solfy F (J. Morita Mfg. Corp., Kyoto, Japan), a dental ultrasonic instrument, was used to provide power in this study. Two experiments were performed. The first one involved touching the brain parenchyma of a pig cadaver with the tip of the ultrasonic microdissector under various conditions to investigate its side effects. In the second experiment, the rat femoral artery, vein, and nerve were dissected from surrounding structures using a prototype of the ultrasonic microdissector. The effects of this device were then investigated histologically. Results The amount of tissue damage was greater with the higher ultrasonic power. No irrigation and a long manipulation time also affected tissue degeneration. Dissection using the ultrasonic microdissector was superior to conventional dissection methods in terms of time (p < 0.05) and safety without any additional histologic damages. Conclusions The newly developed ultrasonic microdissector can dissect soft tissue without damage to the surrounding tissue. Further studies are required to determine the optimal intensity for its clinical use.

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Lubbe, D. E., N. Fisher-Jeffes et P. Semple. « Endoscopic resection of skull base tumours utilising the ultrasonic dissector ». Journal of Laryngology & ; Otology 126, n^o 6 (12 avril 2012) : 625–29. http://dx.doi.org/10.1017/s0022215112000588.

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AbstractObjective:We report the use and benefits of the ultrasonic dissector in the resection of difficult skull base lesions.Method:Five case reports are presented, and the utilisation of ultrasonic dissectors in otorhinolaryngology is reviewed.Results:The ultrasonic dissector was found to be a useful tool during the endoscopic resection of poorly accessible skull base tumours. Safe dissection and complete removal of all five lesions were achieved without any vascular injury. To our knowledge, this is the first report of the use of the ultrasonic dissector for the resection of sinonasal and skull base tumours.Conclusion:The ultrasonic dissector was found to be particularly useful during the endoscopic transnasal approach to the petrous apex. During minimally invasive endonasal surgery, benefits include the length of the instrument, speed and precision of dissection, and low risk of vascular injury.

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Albert, Sebastien, Charles Guedon, Caroline Halimi, Jean Pierre Cristofari et Beatrix Barry. « The Use of Harmonic Scalpel for Free Flap Dissection in Head and Neck Reconstructive Surgery ». Plastic Surgery International 2012 (20 mai 2012) : 1–4. http://dx.doi.org/10.1155/2012/302921.

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Surgeons conventionally use electrocautery dissection and surgical clip appliers to harvest free flaps. The ultrasonic Harmonic Scalpel is a new surgical instrument that provides high-quality dissection and hemostasis and minimizes tissue injury. The aim of this study was to evaluate the effectiveness and advantages of the ultrasonic Harmonic Scalpel compared to conventional surgical instruments in free flap surgery. This prospective study included 20 patients who underwent head and neck reconstructive surgery between March 2009 and May 2010. A forearm free flap was used for reconstruction in 12 patients, and a fibular flap was used in 8 patients. In half of the patients, electrocautery and surgical clips were used for free flap harvesting (the EC group), and in the other half of the patients, ultrasonic dissection was performed using the Harmonic Scalpel (the HS group). The following parameters were significantly lower in the HS group compared to the EC group: the operative time of flap dissection (35% lower in the HS group), blood loss, number of surgical clips and cost of surgical materials. This study demonstrated the effectiveness of the Harmonic Scalpel in forearm and fibular free flap dissections that may be extended to other free flaps.

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Oertel, Joachim, Michael Robert Gaab, Uwe Runge, Henry Werner Siegfried Schroeder et Juergen Piek. « Waterjet Dissection versus Ultrasonic Aspiration in Epilepsy Surgery ». Operative Neurosurgery 56, suppl_1 (1 janvier 2005) : ONS—142—ONS—146. http://dx.doi.org/10.1227/01.neu.0000144316.87764.13.

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Abstract OBJECTIVE: Waterjet dissection is currently under close investigation in neurosurgery. Experimentally, precise brain parenchyma dissection with vessel preservation has been demonstrated. Clinically, the safety of the instrument has already been proved. However, precise data demonstrating that waterjet dissection indeed reduces surgical blood loss are still missing. METHODS: The authors applied the waterjet device in a prospective randomized study in comparison with the ultrasonic aspirator. Because there is little variability in the procedure, 30 patients with temporal lobe epilepsy receiving a tailored temporal lobe resection between December 1999 and October 2002 were selected for this study. Intraoperative vessel preservation, intraoperative blood loss, surgical complications, and epilepsy outcome were evaluated. All patients were followed at 3-month intervals. RESULTS: During surgery, both instruments were easy to handle. Only with the waterjet dissector, however, were even small intraparenchymal blood vessels preserved. Intraoperative blood loss was significantly reduced with the waterjet (mean, 70 ± 46 ml) compared with the ultrasonic aspirator (mean, 121 ± 48 ml). However, no difference in the necessity for blood transfusion occurred. No difference was observed with respect to operation time (238.6 ± 37.0 min with the waterjet, 247.5 ± 41.5 min with the ultrasonic aspirator), surgical complications, and outcome. CONCLUSION: The waterjet dissector enables a significant reduction of intraoperative blood loss in the investigated setting. However, further studies are needed to confirm these results with a larger number of patients. Studies also are needed to prove that the reduction of blood loss is of clinical relevance for the outcome of the patients.

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Deori, Ananya, Nikhil Gupta, Arun Kumar Gupta, Raghav Yelamanchi, Himanshu Agrawal et C. K. Durga. « A Prospective Randomised Controlled Study Comparing Ultrasonic Dissector with Electrocautery for Axillary Dissection in Patients of Carcinoma Breast ». Malaysian Journal of Medical Sciences 28, n^o 1 (24 février 2021) : 97–104. http://dx.doi.org/10.21315/mjms2021.28.1.12.

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Background: Axillary dissection is one of the important components of modified radical mastectomy (MRM). The present study was conducted to compare surgical outcomes by using monopolar electrocautery and ultrasonic dissector for axillary dissection in MRM. Methods: A parallel randomised controlled single blinded study was conducted with a sample size of 70 patients who were randomised into two groups. One group underwent MRM using ultrasonic dissector (Group A) and the other one using electrocautery (Group B). Intra- and post-operative outcomes were compared. Results: Group A had an average operating time of 30.86 min, which was statistically less than that of Group B. The mean mop count and the daily drain output in Group A were less as compared to Group B and the differences were statistically significant. Drain was removed early in Group A as compared to Group B. However, post-operative pain scores and seroma formation were not statistically significant among the two groups. Conclusion: Ultrasonic dissector group had significantly lesser intra-operative bleeding, operating time and post-operative drain output when compared to electrocautery group. However, the two groups had no significant difference in post-operative pain scores and seroma formation.

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González-Moreno, Santiago, et Paul H. Sugarbaker. « Ultrasonic dissection for pseudomyxoma peritonei ». Diseases of the Colon & ; Rectum 43, n^o 10 (octobre 2000) : 1454–56. http://dx.doi.org/10.1007/bf02236649.

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Manna, Ronald. « Ultrasonic dissection and coagulation system ». Journal of the Acoustical Society of America 111, n^o 3 (2002) : 1146. http://dx.doi.org/10.1121/1.1469282.

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Wuchinich, David G. « Longitudinal-Torsional ultrasonic tissue dissection ». Journal of the Acoustical Society of America 119, n^o 6 (2006) : 3530. http://dx.doi.org/10.1121/1.2212638.

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Gossot, D., G. Buess, A. Cuschieri, E. Leporte, M. Lirici, R. Marvik, D. Meijer, A. Melzer et M. O. Schurr. « Ultrasonic dissection for endoscopic surgery ». Surgical Endoscopy 13, n^o 4 (avril 1999) : 412–17. http://dx.doi.org/10.1007/s004649901002.

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Suzuki, Yasuyuki, Keiichi Okano et Yoshikazu Kuroda. « Ultrasonic Dissection Versus Conventional Dissection Techniques in Pancreatic Surgery ». Annals of Surgery 261, n^o 6 (juin 2015) : e150. http://dx.doi.org/10.1097/sla.0000000000000389.

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Uzunoglu, Faik G., Anne Stehr, Judith A. Fink, Eik Vettorazzi, Alexandra Koenig, Karim A. Gawad, Yogesh K. Vashist et al. « Ultrasonic Dissection Versus Conventional Dissection Techniques in Pancreatic Surgery ». Annals of Surgery 256, n^o 5 (novembre 2012) : 675–80. http://dx.doi.org/10.1097/sla.0b013e318271cefa.

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Liu, Ya Xin, Ming Zhong et Li Guo Chen. « A Novel Piezoelectric Micro-Dissection Tool with Ultrasonic Vibration ». Advanced Materials Research 239-242 (mai 2011) : 1343–48. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.1343.

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Micro-dissection technology possesses revolutionary significance in the research field about Cancer Genomics, through which pure population of targeted cells can be procured from tissue sections for subsequent analysis. In this paper, a novel Micro-dissection technology using ultrasonic vibration was proposed and the piezo-powered micro-dissection tool with its control and drive system were also developed. The micro-dissection tool employs the multilayer piezoelectric actuator for generating the ultrasonic vibration with high frequency and low amplitude. To control the piezo-powered Micro-dissection tool, a driving power for piezoelectric actuator was designed using direct digital synthesizer and direct current amplifying principle, thus the micro-dissection tool could vibrate with the frequency scope from 0.5k to50K and the amplitude scope from 0 to 2μm. Finally, experiments about bio-microdissection on liver tissue slice were carried out with the tool and better micro-dissection result was obtained. The experiments show the feasibility of the micro-dissection method with ultrasonic vibration. The new micro-dissection method can be adopted in the bio-micro-manipulation field and it can also significantly promote the development of Cancer Genomics.

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Birch, Daniel W., Adrian Park et Hafez Shuhaibar. « Acute Thermal Injury to the Canine Jejunal Free Flap : Electrocautery versus Ultrasonic Dissection ». American Surgeon 65, n^o 4 (avril 1999) : 334–37. http://dx.doi.org/10.1177/000313489906500410.

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Electrocautery-induced thermal injury contributes to morbidity and mortality after laparoscopic surgery. Ultrasonic dissection is an alternative technique that may produce less thermal injury. We compared the amount of acute thermal injury caused to jejunal free flaps isolated with laparoscopic electrosurgical instruments with that caused by ultrasonic dissection (laparoscopic coagulating shears). Canine jejunal free flaps were isolated by electrocautery or laparosonic coagulating shears and remained viable on a vascular pedicle. After a period of ischemia and reperfusion, the flaps were resected to simulate harvesting and reimplantation. Thermal injury was observed at the site of dissection and was graded histologically. At the margin of the jejunal free flaps, the laparosonic coagulating shears produced less thermal injury (score, 2.2 at level 3) than the electrocautery grasping forceps (score, 3.7 at 35 W and 4.1 at 70 W). The laparosconic coagulating shears produced less thermal injury to a jejunal free flap than did electrocautery. Ultrasonic dissection is an alternative to the complications produced by electrocautery during laparoscopic dissection.

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Sanoussi, Abderrahim, Vito De Blasi, Juan Santiago Azagra et Edoardo Rosso. « Ultrasound dissection (cavitron ultrasonic surgical aspirator). » ASVIDE 9 (mai 2022) : 105. http://dx.doi.org/10.21037/asvide.2022.105.

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Bessa, Samer S., Tarek A. Al-Fayoumi, Khaled M. Katri et Ahmed T. Awad. « Clipless Laparoscopic Cholecystectomy by Ultrasonic Dissection ». Journal of Laparoendoscopic & ; Advanced Surgical Techniques 18, n^o 4 (août 2008) : 593–98. http://dx.doi.org/10.1089/lap.2007.0227.

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MAHMOUD M. SALAMA, M.Sc., HAMED A. ELBADAWY, M. D. ;., et GAD Y. MEKKI, M.D. « Clippless Laparoscopic Cholecystectomy Using Ultrasonic Dissection ». Medical Journal of Cairo University 88, n^o 6 (1 juin 2020) : 1157–63. http://dx.doi.org/10.21608/mjcu.2020.110852.

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Yoshida, Yuichi, et Osamu Yamamoto. « Ultrasonic Dissection for Diffuse Plexiform Neurofibroma ». Dermatologic Surgery 36, n^o 11 (novembre 2010) : 1773–74. http://dx.doi.org/10.1111/j.1524-4725.2010.01757.x.

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Huang, Haibo, Yifan Pan, Yan Pang, Hao Shen, Xiwei Gao, Yichen Zhu, Liguo Chen et Lining Sun. « Piezoelectric Ultrasonic Biological Microdissection Device Based on a Novel Flexure Mechanism for Suppressing Vibration ». Micromachines 12, n^o 2 (13 février 2021) : 196. http://dx.doi.org/10.3390/mi12020196.

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Biological microdissection has a wide range of applications in the field of molecular pathology. The current laser-assisted dissection technology is expensive. As an economical microdissection method, piezoelectric ultrasonic microdissection has broad application prospects. However, the performance of the current piezoelectric ultrasonic microdissection technology is unsatisfactory. This paper aims to solve the problems of the low dissecting precision and excessive wear of the dissecting needle caused by the harmful lateral vibration of the present piezoelectric ultrasonic microdissection device. A piezoelectric ultrasonic microdissection device based on a novel flexure mechanism is proposed. By analyzing the flexure hinge flexibility, the type of flexure beam and the optimal design parameters are determined. Through harmonic response simulation analysis, the newly designed microdissection device with a vibration-suppressing mechanism achieves the best vibration effect when the driving frequency is 28 kHz. Under this driving frequency, the lateral vibration suppression effect is improved by 68% compared to the traditional effect without vibration suppression. Then, based on 3D printing technology, a prototype of a novel microdissection device is produced, and its performance is tested. Experiments on dissecting needle vibration tests show that the flexure mechanism does indeed suppress the lateral vibration of the needle tip. We conducted various tissue dissection experiments on paraffin tissue sections. First, we determine the optimal dissecting parameters (driving voltage, frequency, feed speed, cutting angle) of the new equipment through various parameter dissecting experiments. Then, we adopt these optimal dissecting parameters to perform three kinds of dissecting experiments on mouse tissue paraffin section (liver, lung, bone), dissecting experiments on tissue sections of different thicknesses (3 μm, 4 μm, 5 μm), sampling and extraction experiments on complete tissue. The new device has a better dissecting performance for paraffin tissue sections below a 5 μm thickness and can complete various dissecting tasks. Finally, we compare the wear of the dissecting needles of the new and old devices after the same dissecting tasks. The results prove that the suppression of harmful lateral vibration not only significantly improves the dissecting effect but also increases the service life and durability of the dissecting needle, which is beneficial for reducing the equipment costs.

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Bin Anis, Saad, Pir Muneeb Rehman, Farhan Ahmad et Umar Farooq. « Comparative Study of Conventional Electrocautery Versus Ultrasonic Dissector in Laparoscopic Cholecystectomy ». Journal of Islamabad Medical & ; Dental College 8, n^o 2 (27 juin 2019) : 70–73. http://dx.doi.org/10.35787/jimdc.v8i2.358.

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Background: Laparoscopic cholecystectomy (LC) is very commonly performed for removal of gallstones. In routine, ultrasonic devices are used for laparoscopy involving the deeper operating fields, while electrosurgical devices are preferred for LC. However, nowadays both of these devices are used for LC. The objective of this study was to compare the surgical outcomes of ultrasonic dissector over conventional electrocautery in patients planned for LC. Material and Methods: This non-randomized clinical trial was conducted in general surgery unit, Jinnah hospital Lahore. The study duration was 15th January 2015 to 31st December 2016. In group A (n=100), patients were operated through three-port standard laparoscopic cholecystectomy and conventional electrosurgical cautery was used for dissection. While in group B (n=50), patients were operated through single incision laparoscopic surgery (SILS) and Harmonic dissector was used for sealing of cystic artery and cystic duct. SPSS version 23 was used for data analysis. Complications between electrocautery and ultrasonic dissector were compared using chi-square test/Fischer exact test and operative time was compared using student’s t-test with p-value ≤ 0.05 considered as statistically significant.Results: Out of 150 patients planned for laparoscopic cholecystectomy, 33 (22%) were males and 117 (78%) females. The mean age was 40±6.45 years with an age range of 12-80 years. In group A, intraoperative gall bladder perforation was found in 5 patients whereas in group B, there was only one patient with perforation. A total of 4 cases were converted to open cholecystectomy in group A due to difficult dissection in Calot’s triangle as compared to 1 case in group B. In group A, 3 cases had postoperative bile leakage in the drain. In two patients it settled over a period of 3 days. About 03 cases had wound infection in group A and 1 in group B. Mean operative time in group A was 42.2±8.93 minutes versus 35.7±4.85 minutes in group B (p-value 0.001).Conclusion: In this study, the rate of post-operative complications was similar between the two groups, but operative time was significantly shorter in the group B. Harmonic dissector enabled easy dissection of tissues with good hemostasis and less trafficking of instrument, avoiding use of clips and sutures during minimal invasive surgery.

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Lei, Haiming, Dong Xu, Xinghua Shi et Koulan Han. « Ultrasonic Dissection versus Conventional Dissection for Pancreatic Surgery : A Meta-Analysis ». Gastroenterology Research and Practice 2016 (2016) : 1–7. http://dx.doi.org/10.1155/2016/6195426.

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Background. The role of ultrasonic dissection (UD) in pancreatic surgery remains controversial. The aim of this meta-analysis was to evaluate the clinical effect of UD in pancreatic surgery when compared with conventional dissection (CD).Materials and Methods. A comprehensive literature search was performed to identify eligible studies that compared UD with CD for pancreatic surgery in PubMed, EMBASE, Web of Science, and the Cochrane Library. Risk ratio (RR) or mean difference with 95% confidence interval (CI) was calculated.Results. Six studies were included with a total of 215 patients undergoing UD and 210 undergoing CD. In comparison with CD in distal pancreatectomy, UD was associated with lower rates of pancreatic fistula (RR = 0.46, 95% CI: 0.27–0.76) and abdominal abscess and shorter operation time and hospital stay (P<0.05). In pancreaticoduodenectomy, there was no significant difference in pancreatic fistula rate between two groups (RR = 0.79, 95% CI: 0.48–1.29). However, the significantly less intraoperative blood loss and the transfused blood unit were found in patients receiving UD (P<0.05).Conclusions. The results of this meta-analysis show that, in comparison with CD, UD is associated with better perioperative outcomes in pancreatic surgery.

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Oertel, Joachim, Michael Robert Gaab, Dirk-Thomas Pillich, Henry W. S. Schroeder, Rolf Warzok et Jürgen Piek. « Comparison of waterjet dissection and ultrasonic aspiration : an in vivo study in the rabbit brain ». Journal of Neurosurgery 100, n^o 3 (mars 2004) : 498–504. http://dx.doi.org/10.3171/jns.2004.100.3.0498.

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Object. The waterjet method of dissection has been shown to enable the precise dissection of the parenchyma vessels while preserving blood in cadaveric pig brains. The waterjet device has also been applied clinically to treat various diseases and disorders without complications. Evidence still remains to be gathered as to how the instrument performs in reducing surgical trauma, intraoperative blood loss, and postsurgical brain edema. In the present study the authors investigate these parameters in a comparison between waterjet dissection and ultrasonic aspiration in the rabbit brain in vivo. Methods. Thirty-one rabbits received identical bilateral frontal corticotomies, which were created using the waterjet device or an ultrasonic aspirator. The animals were killed 1, 3, or 7 days, or 6 weeks after surgery and their brains were processed for immunohistological analysis. Blood vessel preservation, intraoperative hemorrhage, postsurgical brain edema, and posttraumatic microglial and astoglial reactions were evaluated. Only in animals subjected to waterjet dissection were preserved vessels observed within the corticotomies. In addition, less intraoperative bleeding occurred in animals in which the waterjet was used. The microglial reaction was significantly reduced by waterjet dissection compared with ultrasonic aspiration; however, no difference in edema formation or astrocytic reactivity was observed. Conclusions. These results demonstrate that waterjet dissection appears to be less traumatic than ultrasonic aspiration with respect to intraoperative hemorrhage and postoperative microglial reactivity in the rabbit model. Nevertheless, no difference in edema formation could be demonstrated. It remains to be proven that the observed differences are of clinical relevance.

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Ragab, S. M. « Six years of evidence-based adult dissection tonsillectomy with ultrasonic scalpel, bipolar electrocautery, bipolar radiofrequency or ‘cold steel’ dissection ». Journal of Laryngology & ; Otology 126, n^o 10 (19 septembre 2012) : 1056–62. http://dx.doi.org/10.1017/s0022215112002022.

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AbstractObjective:To conduct an adequately powered, prospective, randomised, controlled trial comparing adult dissection tonsillectomy using either ultrasonic scalpel, bipolar electrocautery, bipolar radiofrequency or ‘cold steel’ dissection.Methods:Three hundred patients were randomised into four tonsillectomy technique groups. The operative time, intra-operative bleeding, post-operative pain, tonsillar fossa healing, return to full diet, return to work and post-operative complications were recorded.Results:The bipolar radiofrequency group had a shorter mean operative time. The mean intra-operative blood loss during bipolar radiofrequency tonsillectomy was significantly less compared with cold dissection and ultrasonic scalpel tonsillectomy. Pain scores were significantly higher after bipolar electrocautery tonsillectomy. Patients undergoing bipolar electrocautery tonsillectomy required significantly more days to return to full diet and work. The bipolar electrocautery group showed significantly reduced tonsillar fossa healing during the first and second post-operative weeks.Conclusion:In this adult series, bipolar radiofrequency tonsillectomy was superior to ultrasonic, bipolar electrocautery and cold dissection tonsillectomies. This method combines the advantages of ‘hot’ and ‘cold’ tonsillectomy.

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Emam, Tarek A., et Alfred Cuschieri. « How Safe is High-Power Ultrasonic Dissection ? » Annals of Surgery 237, n^o 2 (février 2003) : 186–91. http://dx.doi.org/10.1097/01.sla.0000048454.11276.62.

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Feil, W. « Technology and clinical application of ultrasonic dissection ». Minimally Invasive Therapy & ; Allied Technologies 11, n^o 5-6 (janvier 2002) : 215–23. http://dx.doi.org/10.1080/13645706.2003.11873717.

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Felekouras, Evangelos, Evangelos Prassas, Michael Kontos, Ioannis Papaconstantinou, Emmanouil Pikoulis, Athanasios Giannopoulos, Christos Tsigris et al. « Liver Tissue Dissection : Ultrasonic or RFA Energy ? » World Journal of Surgery 30, n^o 12 (6 novembre 2006) : 2210–16. http://dx.doi.org/10.1007/s00268-005-0468-0.

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Lowry, John. « Ultrasonic Energy for Cutting, Coagulation and Dissection ». Annals of The Royal College of Surgeons of England 88, n^o 4 (juillet 2006) : 426. http://dx.doi.org/10.1308/rcsann.2006.88.4.426.

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Bashour, Tali T., John P. Crew, Marilyn Dean et Elias S. Hanna. « Ultrasonic imaging of common carotid artery dissection ». Journal of Clinical Ultrasound 13, n^o 3 (mars 1985) : 210–11. http://dx.doi.org/10.1002/jcu.1870130313.

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Meloyan, A. K., et V. B. Bogdanovich. « DIRECT RESULTS OF ALLOHERNIOPLASTY POSTOPERATIVE VENTRAL HERNIAS WITH USING OF CURRENT TECHNOLOGY ». Health and Ecology Issues, n^o 3 (28 septembre 2008) : 99–105. http://dx.doi.org/10.51523/2708-6011.2008-5-3-20.

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The work is based on study and analysis the direct results of surgical treatment 117 patients with postoperative ventral hernias to whom have been made allohernioplasty by the on lay method. The structure of early specific postoperative complications have been studied and their comparative analysis of tissue dissection method have been led. The investigation results showed that by using a method of ultrasonic dissection the amount of the complications was in 3,4 times less in comparison with the classic method of using a high-frequency coagulator. Moreover such complications as haematoma, ischemic necrosis of skin and subcutaneous cellular tissue but also infiltrations (in patients with primary ventral hernias) there were not met that was evidence of reliable hemostatic effect of the ultrasonic generator, «atraumatic» tissue dissection and positive literal it’s influence upon the surrounding tissues.

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Pandit, Narendra, Laligen Awale et Shailesh Adhikary. « Clipless Laparoscopic Cholecystectomy : Ultrasonic Dissection vs Conventional Method ». World Journal of Laparoscopic Surgery with DVD 12, n^o 3 (2019) : 120–25. http://dx.doi.org/10.5005/jp-journals-10033-1384.

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Sun, Lining, Huixiang Wang, Liguo Chen et Yaxin Liu. « A novel ultrasonic micro-dissection technique for biomedicine ». Ultrasonics 44 (décembre 2006) : e255-e260. http://dx.doi.org/10.1016/j.ultras.2006.06.010.

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Galatius, Hanne, Mette Okholm et Jack Hoffmann. « Mastectomy using ultrasonic dissection : effect on seroma formation ». Breast 12, n^o 5 (octobre 2003) : 338–41. http://dx.doi.org/10.1016/s0960-9776(03)00110-3.

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Lo Russo, M., C. Amanti et A. Lombardi. « 271 Axillary dissection using a new ultrasonic device ». European Journal of Cancer Supplements 8, n^o 3 (mars 2010) : 137. http://dx.doi.org/10.1016/s1359-6349(10)70297-4.

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Lirici, M. M., M. Di Paola, C. Ponzano et C. G. S. Hüscher. « Combining ultrasonic dissection and the Storz operation rectoscope ». Surgical Endoscopy And Other Interventional Techniques 17, n^o 8 (13 mai 2003) : 1292–97. http://dx.doi.org/10.1007/s00464-002-8727-8.

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Hanna, Sherif S., Robert Nam et Charlene Leonhardt. « Liver resection by Ultrasonic Dissection and lntraoperative Ultrasonography ». HPB Surgery 9, n^o 3 (1 janvier 1996) : 121–28. http://dx.doi.org/10.1155/1996/98742.

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Ultrasonic dissetion (USD) and intraoperative ultrasonography (IOUS) have shown encouraging results in a retrospective analysis of 109 patients with benign or malignant liver disease. Of 109 patients assessed between 1980 and 1993, 84 were resected: 27 by finger fracture technique (FFT) and 57 by USD. Hospital mortality was 4.8% (4/84) and 30-day mortality was 6.0% (5/84). Overall morbidity was 48.8% (41/84) and liver related morbidity (hepatic bleeding, sepsis, and bile leak) was 34.5% (29/84); of the 29 patients, 5 required re-operation. Liver complications occurred in 12/27 (44.4%) in the FFT group as opposed to 17/57 (29.8%) in the USD group. The incidence of postoperative hepatic bleeding was significantly less by USD than by FFT(p=O.03). As well, intraoperative blood loss (p=O.01)number of intraoperative blood units used (p=0.002), and postoperative length of stay (p=O.O09) have been significantly reduced by USD. IOUS was used on 64 patients. Not only has it improved the sensitivity (99%) and specificity (98%) for detection of hepatic neoplasms, it has also helped increase the precision and accuracy of anatomical tumour localization. As a result, 11/64 patients (17.2%) had their preoperative plans changed: 8 were abandoned and 3 were revised. In summary, USD has significantly reduced intraoperative blood loss and hence reduced the number of intraoperative transfusions, incidence of postoperative complications and postoperative length of stay. IOUS should be routinely employed in patients undergoing liver resection since it provides critical information that could obviate oncologically useless resections.

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Muhsin Aldaraji, Abdulameer. « ULTRASONIC DISSECTION VERSUS CONVENTIONAL LIGATION COAGULATION IN THYROIDECTOMY ». Basrah Journal of Surgery 23, n^o 1 (28 juin 2017) : 66–75. http://dx.doi.org/10.33762/bsurg.2017.132425.

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Ru, Changhai, Jun Liu, Ming Pang et Yu Sun. « Controlled ultrasonic micro-dissection of thin tissue sections ». Biomedical Microdevices 16, n^o 4 (10 avril 2014) : 567–73. http://dx.doi.org/10.1007/s10544-014-9859-z.

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Cuschieri, A., S. Shimi, S. Banting et G. Vander Velpen. « Endoscopic ultrasonic dissection for thoracoscopic and laparoscopic surgery ». Surgical Endoscopy 7, n^o 3 (1993) : 197–99. http://dx.doi.org/10.1007/bf00594108.

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Tsivenko, O. I., S. O. Bichkov, R. M. Grynyov, L. M. Dushyk et N. V. Cherkova. « RISKS OF DEVELOPMENT OF ANASTOMOTIC SUTURE FAILURE DEPENDING ON THE METHOD OF DISSECTION OF THE TISSUES OF THE ORGANS OF THE GASTROINTESTINAL TRACT AND THE FEATURES OF THEIR FORMATION ». Kharkiv Surgical School, n^o 4-5 (26 octobre 2022) : 118–23. http://dx.doi.org/10.37699/2308-7005.4-5.2022.23.

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Summary. The purpose of the study: experimental and clinical study of the peculiarities of the course of reparative processes in the area of gastro- and colostomy wounds after carrying out various types of dissection and justification of the technique of forming anastomoses of the gastrointestinal tract. Research materials and methods. The paper presents the results of an experimental and clinical study of the processes occurring in the area of gastro-, entero-, and colostomy wounds made with electrosurgical or ultrasonic scalpels, immediately after exposure to tissues and within thirty days. Research results. Data were obtained that indicate a significant difference in destructive and reparative processes after various types of dissection. The use of ultrasonic dissection made it possible to maximally reduce ischemia of tissues and the internal ridge of anastomoses, in connection with which the reparative processes proceeded favorably and the patency through the anastomosis was not disturbed. The obtained results made it possible to scientifically substantiate the necessary distance of the needle from the edge of the dissection, depending on the type of dissection of the wall of the gastrointestinal tract. Conclusions. Ultrasonic dissection of the gastrointestinal tract is characterized by a relatively gentle effect on biological tissues, which is accompanied by the formation of much smaller areas of necrosis and necrobiosis than with electrosurgical exposure. In addition, biological welding of the edges of the wound, reliable hemostasis is achieved; there are no carbonization of fabrics, their sticking to the surface of the manipulator, smoke, sparks and other effects. It was established that after electrosurgical dissection, the phenomenon of prolonged necrosis develops, i.e., the necrosis zone spreads within three days, including due to the necrobiosis zone. This fact must be taken into account when applying seams. Adherence to the technical rules for the formation of gastrointestinal anastomoses, based on experimental data, made it possible to eliminate the risks of developing postoperative complications, first of all, their failure.

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Weingarten, Charles. « Ultrasonic Tonsillectomy : Rationale and Technique ». Otolaryngology–Head and Neck Surgery 116, n^o 2 (février 1997) : 193–96. http://dx.doi.org/10.1016/s0194-59989770324-3.

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Dissection using ultrasonic aspiration is characterized by its unique tendency to spare fibrous and vascular structures during removal of parenchymal lesions. This preliminary study was undertaken to evaluate the feasibility and efficiency of tonsillectomy using the ultrasonic aspirator. Tonsillectomy was performed on 23 patients using the ultrasonic aspirator. Pericapsular removal of the tonsil was easily accomplished with complete preservation of the tonsillar pillars and minimal peritonsillar trauma. The ability to identify significant vasculature before transection, and the constant aspiration integrated into the ultrasonic aspirator allowed excellent visualization of the operative field at all times. No postoperative complications were noted and recovery was typical for tonsillectomy patients. The ultrasonic aspirator may increase the efficiency and margin of safety of tonsillectomy.

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Chen, L. G., L. N. Sun, Y. X. Liu et H. X. Wang. « A Novel Micro-Dissection Method Using Ultrasonic Vibration for Molecular Analysis ». Key Engineering Materials 339 (mai 2007) : 291–96. http://dx.doi.org/10.4028/www.scientific.net/kem.339.291.

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Molecular techniques are transforming our understanding of cellular function and disease. However, accurate molecular analysis methods will be limited if the input DNA, RNA, or protein is not derived from pure population of cells or is contaminated by the wrong cells. A novel Ultrasonic Vibration Microdissection (UVM) method was proposed to procure pure population of targeted cells from tissue sections for subsequent analysis. The principle of the Ultrasonic Vibration Cutting is analyzed, and a novel microknife is designed. A multilayer piezoelectric actuator is used to actuate a sharp needle vibrating with high frequency and low amplitude (Approx. 16–50 kHz, and 0-3μm) to cut the tissue. Contrast experiment was done to test the feasibility of UVM method. Experimental results show that the embedded tissue can be quickly and precisely cut with the ultrasonic vibration micro-dissection method.

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Ibikunle, Christopher A., Jessica Titus, Jenny Pan, Christian X. Cruz Pico et Alfredo D. Guerron. « Laparoscopic Cystogastrotomy by Ultrasonic Dissection after Pylorus-Preserving Pancreaticoduodectomy ». JSLS : Journal of the Society of Laparoendoscopic Surgeons 16, n^o 2 (2012) : 292–95. http://dx.doi.org/10.4293/108680812x13427982377229.

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Hardy, KennethJ, Jenepher Martin, DavidR Fletcher, DonaldG Maclellan et RobertMcL Jones. « HEPATIC RESECTION : VALUE OF OPERATIVE ULTRASOUND AND ULTRASONIC DISSECTION ». ANZ Journal of Surgery 59, n^o 8 (août 1989) : 621–23. http://dx.doi.org/10.1111/j.1445-2197.1989.tb01644.x.

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Morino, Mario, Roberto Rimonda, Marco Ettore Allaix, Giuseppe Giraudo et Corrado Garrone. « Ultrasonic Versus Standard Electric Dissection in Laparoscopic Colorectal Surgery ». Annals of Surgery 242, n^o 6 (décembre 2005) : 897–901. http://dx.doi.org/10.1097/01.sla.0000189607.38763.c5.

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Lee, Dongeun, Bok Ki Jung, Tai Suk Roh et Young Seok Kim. « Ultrasonic dissection versus electrocautery for immediate prosthetic breast reconstruction ». Archives of Plastic Surgery 47, n^o 1 (15 janvier 2020) : 20–25. http://dx.doi.org/10.5999/aps.2019.00759.

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Fiddian-Green, Richard G. « Median Hepatotomy Using Ultrasonic Dissection for Complex Hepatobiliary Problems ». Archives of Surgery 123, n^o 7 (1 juillet 1988) : 901. http://dx.doi.org/10.1001/archsurg.1988.01400310115020.

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Matovic, Ervin, et Samir Delibegovic. « THE FIRST EXPERIENCE IN THE TREATMENT OF THE BASE OF APPENDIX BY HEM-O-LOK CLIPS DURING LAPAROSCOPIC APPENDECTOMY ». Acta Medica Saliniana 38, n^o 1 (9 juin 2009) : 47–49. http://dx.doi.org/10.5457/ams.v38i1.28.

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During the laparoscopic appendectomy, the base of appendix is usually secured by double endoloop ligatures or by stapler. In this article we will show our initial experience in securing the base of appendix by plastic XL hem-o-lok clip during laparoscopic appendectomy. Patient, 24 years old with acute appendicitis is admitted to the Department of Surgery. After dissection of mesoappendix and appendicular artery by ultrasonic dissector, two hem-o-lok clips are placed on the base of appendix, and another clip is placed on distal part, which will be removed. Application of clip is made by hem-o-lok XL endoscopic applier.

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Ranjith, Siva, Arun Peter, Madhu Muralee, Paul Augustine et Jem Prabhakar. « A randomised controlled trial comparing ultrasonic dissection with electrocautery for axillary dissection in breast cancer ». Kerala Surgical Journal 27, n^o 2 (2021) : 148. http://dx.doi.org/10.4103/ksj.ksj_44_21.

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Schaarschmidt, K., B. Emmerich et G. Fritzsch. « Physical principles of ultrasonic dissection and clinical application of BERCHTOLD SONO-CUT reusable ultrasonic scissors ». Minimally Invasive Therapy & ; Allied Technologies 11, n^o 5-6 (janvier 2002) : 231–36. http://dx.doi.org/10.1080/13645706.2003.11873719.

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Sazonov, Aleksey A., Nicolay A. Maistrenko, Pavel N. Romashchenko et Ivan A. Makarov. « Comprehensive assessment of hemorrhoidectomy with lateral ultrasonic dissection in the “cut” mode ». Bulletin of the Russian Military Medical Academy 23, n^o 3 (3 novembre 2021) : 17–22. http://dx.doi.org/10.17816/brmma72344.

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The effectiveness of the original technique of hemorrhoidectomy with lateral ultrasonic dissection in the cutting mode was analyzed from a clinical standpoint and studied according to pathomorphological changes in tissues during its use. A comparative assessment of the immediate results of treatment as well as pathomorphological changes in the tissue of removed hemorrhoids in two groups of patients was performed. The main group included 30 patients in whom the original hemorrhoidectomy technique with lateral ultrasound dissection in the cutting mode was used. The control group consisted of 30 patients who underwent Milligan Morgan hemorrhoidectomy using electrocoagulation. No significant difference was found between these groups in terms of the age and sex structure of patients, as well as the main clinical characteristics of the disease. In a comparative analysis of the immediate treatment results, the intensity of the pain syndrome and the incidence of postoperative complications were lower in the main group than in the control group. In the assessment of pathomorphological changes, the depth of coagulation necrosis and the severity of necrobiotic changes in the underlying layer after hemorrhoidectomy with lateral ultrasonic dissection in the cutting mode were significantly less than those after Milligan Morgan surgery using electrocoagulation. A significant difference was also revealed in the timing of tissue regeneration. The formation of active granulations in the postoperative wound area in the main group was noted on postoperative days 1416, while this process developed no earlier than on postoperative day 20 in the control group. As a result, complete epithelialization of wounds after hemorrhoidectomy with lateral ultrasound dissection in the cutting mode occurred much earlier, i.e., postoperative days 2630. A similar process after the Milligan Morgan hemorrhoidectomy using monopolar coagulation was completed only on postoperative days 3638. Thus, the use of the original technique of lateral ultrasound dissection provides a more sparing effect on tissues, which is the key to a favorable course of the postoperative period and rapid rehabilitation of patients.

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