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Takashi Mitsui,Kazuyuki Saito,Yuhei Hakozaki,Yoshiyuki Miwa,Takuji Noro,Emiko Takeshita,Taizen Urahashi,Yasuyuki Seto,Takashi Okuyama,Hideyuki Yoshitomi 대한위암학회 2023 Journal of gastric cancer Vol.23 No.4
Purpose: Intra-abdominal infection is a common postoperative complication of laparoscopic pylorus-preserving gastrectomies (PPGs). Many studies have reported that intra-abdominal infectious complications after gastrectomy adversely affect patient survival outcomes. To prevent gastric fluid leakage into the abdominal cavity, we developed a novel anastomosis method in which the stomach lumen is not opened (termed the non-opened clean end-to-end anastomosis method [NoCEAM]) and evaluated its feasibility. Materials and Methods: Subsequent to lymphadenectomy, the oral and anal resection lines were sutured using an intraoperative endoscope. After closing the stomach circumferentially with clips, the specimen was rolled outward like a “donut.” We resected the specimen circumferentially using a linear stapler, and anastomosis was completed simultaneously. We examined the feasibility of this procedure ex vivo, using three porcine stomachs, and in vivo, using one pig. Subsequently, we applied the procedure to 13 consecutive patients with middle-third early gastric cancer utilizing laparotomic, laparoscopic, and robotic PPG. Results: NoCEAM was completed in all porcine models and human cases. In the human cases, the mean operation time (±standard deviation) was 279±51 minutes, and mean blood loss volume was 22±45 mL. The mean number of linear staples used was 5.06±0.76. None of the patients had complications, and all were discharged on the eighth postoperative. The serum total protein, serum albumin, and hemoglobin levels did not change significantly after surgery. Conclusions: NoCEAM is feasible and safe for performing totally laparoscopic or robotic PPG. It may reduce postoperative complications, such as intra-abdominal infections.
Colonic Perforation Secondary to Idiopathic Intramural Hemorrhage
Takashi Sakamoto,Akira Saito,Alan Kawarai Lefor,Tadao Kubota 대한대장항문학회 2016 Annals of Coloproctolgy Vol.32 No.6
Intramural colonic hemorrhage is rare and often secondary to trauma or anticoagulation therapy. Idiopathic intramural hemorrhages in the alimentary tract have rarely been reported. While several reports of spontaneous perforation of an intramural rectal hematoma have been published, no reports of spontaneous perforation in the ascending colon due to a hematoma have. We describe a patient with an ascending colonic perforation secondary to spontaneous intramural hemorrhage. The patient is a 35-year-old male, who presented with acute abdominal pain and no history of trauma. An abdominal computed tomography scan showed a high-density area around the ascending colon, and nonoperative management was instituted. On the eighth hospital day, the pain worsened, and abdominal computed tomography scan showed free air. An emergent right hemicolectomy was performed. Intramural hematoma and ischemia with perforation, with no obvious etiology, were found. The patient was discharged on the 14th postoperative day.
Analysis of Contract Price in a B2B Automobile Auction
Takashi Namatame,Yumi Asahi,Natsuki Motoyoshi,Yuzo Saito 대한산업공학회 2009 Industrial Engineeering & Management Systems Vol.8 No.4
This study analyzed the structure of pricing in the automobile auction market by using real trade data. We focused on the bidding behavior of bidders and the contract price of exhibits. First, we proposed a relational framework among exhibits, number of bidders, and the contract price. Next, we utilized a neural network model to estimate the number of bidders and the contract price. Subsequently, we investigated the relationship between the number of bidders and the contact price, and evaluated our method through an analysis that employed verifying data. Lastly, we listed our suggestions for bidding in auction markets.
Takashi KUSAKA,Takayuki TANAKA,Shun’ichi KANEKO,Yoshihito SUZUKI,Munenobu SAITO,Shuji SEK,Naohisa SAKAMOTO,Hidekazu KAJIWARA 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper describes the assist force control of semi-active assist system ”Smart Suit” for horse trainer. We developed a soft and flexible power assist device named ”Smart Suit” for reducing horse trainers’ physical fatigue in their horse training works in order to prevent their spine or legs injuries. The smart suit is a kind of semi-active and flexible power assist devices. In order to gain the suitable assist force for periodical horse trainers’ motion, the assist force control method based on the periodical input control was developed in this study. Also, for stabilizing their horse riding motion, we developed the assist force control method considering their dynamic stability by controlling their center of gravity on the zero moment point (ZMP)which is the dynamic stable point.