An Ultrathin Endoscope with a 2.4-mm Working Channel Shortens the Esophagogastroduodenoscopy Time by Shortening the Suction Time

Satoshi Shinozaki,Yoshimasa Miura,Yuji Ino,Kenjiro Shinozaki,Alan Kawarai Lefor,Hironori Yamamoto 대한소화기내시경학회 2015 Clinical Endoscopy Vol.48 No.6

Background/Aims: Poor suction ability through a narrow working channel prolongs esophagogastroduodenoscopy (EGD). The aim of this study was to evaluate suction with a new ultrathin endoscope (EG-580NW2; Fujifilm Corp.) having a 2.4-mm working channel in clinical practice. Methods: To evaluate in vitro suction, 200 mL water was suctioned and the suction time was measured. The clinical data of 117 patients who underwent EGD were retrospectively reviewed on the basis of recorded video, and the suction time was measured by using a stopwatch. Results: In vitro, the suction time with the EG-580NW2 endoscope was significantly shorter than that with the use of an ultrathin endoscope with a 2.0-mm working channel (EG-580NW; mean ± standard deviation, 22.7±1.1 seconds vs. 34.7±2.2 seconds; p<0.001). We analyzed the total time and the suction time for routine EGD in 117 patients (50 in the EG-580NW2 group and 67 in the EG-580NW group). In the EG-580NW2 group, the total time for EGD was significantly shorter than that in the EG-580NW group (275.3±42.0 seconds vs. 300.6±46.5 seconds, p=0.003). In the EG-580NW2 group, the suction time was significantly shorter than that in the EG-580NW group (19.2±7.6 seconds vs. 38.0±15.9 seconds, p<0.001). Conclusions: An ultrathin endoscope with a 2.4-mm working channel considerably shortens the routine EGD time by shortening the suction time, in comparison with an endoscope with a 2.0-mm working channel.

An Ultrathin Endoscope with a 2.4-mm Working Channel Shortens the Esophagogastroduodenoscopy Time by Shortening the Suction Time

Satoshi Shinozaki,Yoshimasa Miura,Yuji Ino,Kenjiro Shinozaki,Alan Kawarai Lefor,Hironori Yamamoto 대한소화기내시경학회 2016 Clinical Endoscopy Vol.49 No.1

Background/Aims: Poor suction ability through a narrow working channel prolongs esophagogastroduodenoscopy (EGD). The aim of this study was to evaluate suction with a new ultrathin endoscope (EG-580NW2; Fujifilm Corp.) having a 2.4-mm working channel in clinical practice. Methods: To evaluate in vitro suction, 200 mL water was suctioned and the suction time was measured. The clinical data of 117 patients who underwent EGD were retrospectively reviewed on the basis of recorded video, and the suction time was measured by using a stopwatch. Results: In vitro, the suction time with the EG-580NW2 endoscope was significantly shorter than that with the use of an ultrathin endoscope with a 2.0-mm working channel (EG-580NW; mean ± standard deviation, 22.7±1.1 seconds vs. 34.7±2.2 seconds; p<0.001). We analyzed the total time and the suction time for routine EGD in 117 patients (50 in the EG-580NW2 group and 67 in the EG-580NW group). In the EG-580NW2 group, the total time for EGD was significantly shorter than that in the EG-580NW group (275.3±42.0 seconds vs. 300.6±46.5 seconds, p=0.003). In the EG-580NW2 group, the suction time was significantly shorter than that in the EG-580NW group (19.2±7.6 seconds vs. 38.0±15.9 seconds, p<0.001). Conclusions: An ultrathin endoscope with a 2.4-mm working channel considerably shortens the routine EGD time by shortening the suction time, in comparison with an endoscope with a 2.0-mm working channel. Background/Aims: Poor suction ability through a narrow working channel prolongs esophagogastroduodenoscopy (EGD). The aim of this study was to evaluate suction with a new ultrathin endoscope (EG-580NW2; Fujifilm Corp.) having a 2.4-mm working channel in clinical practice. Methods: To evaluate in vitro suction, 200 mL water was suctioned and the suction time was measured. The clinical data of 117 patients who underwent EGD were retrospectively reviewed on the basis of recorded video, and the suction time was measured by using a stopwatch. Results: In vitro, the suction time with the EG-580NW2 endoscope was significantly shorter than that with the use of an ultrathin endoscope with a 2.0-mm working channel (EG-580NW; mean ± standard deviation, 22.7±1.1 seconds vs. 34.7±2.2 seconds; p<0.001). We analyzed the total time and the suction time for routine EGD in 117 patients (50 in the EG-580NW2 group and 67 in the EG-580NW group). In the EG-580NW2 group, the total time for EGD was significantly shorter than that in the EG-580NW group (275.3±42.0 seconds vs. 300.6±46.5 seconds, p=0.003). In the EG-580NW2 group, the suction time was significantly shorter than that in the EG-580NW group (19.2±7.6 seconds vs. 38.0±15.9 seconds, p<0.001). Conclusions: An ultrathin endoscope with a 2.4-mm working channel considerably shortens the routine EGD time by shortening the suction time, in comparison with an endoscope with a 2.0-mm working channel.

A Study for Damping Application to Response-controlled Structure

Shinozaki, Yozo,Mogi, Yoshihiro,Ota, Masaaki,Yoshikawa, Hiroaki Council on Tall Building and Urban Habitat Korea 2021 International journal of high-rise buildings Vol.10 No.2

Most of high-rise buildings in Japan^*1 are structure with damping systems recently. The design procedure is performance-based design (PBD), which is based on the nonlinear response history procedure (NRHP) using 2 or 3-dimentional frame model. In addition, hysteretic property of steel plates or velocity-dependent property of viscous dampers are common practice for the damping system. However, for the selection of damping system, the easy dynamic analysis of recent date may lead the most of engineers to focus attention on the maximum response only without thinking how it shakes. By nature, the seismic design shall be to figure out the action of inertia forces by complex & dynamic loads including periodic and pulse-like characteristics, what we call seismic ground motion. And it shall be done under the dynamic condition. On the contrary, we engineers engineers have constructed the easy-to-use static loads and devoted ourselves to handle them. The structures with damping system shall be designed considering how the stiffness & damping to be applied to the structures against the inertia forces with the viewpoint of dynamic aspect. In this paper we reconsider the role of damping in vibration and give much thought to the basic of shake with damping from a standpoint of structural design. Then, we present some design examples based on them.

일본 여성의 체형변화 추이

Shinozaki, Akio 한국의류산업학회 2005 한국의류산업학회지 Vol.7 No.1

Sequence and Phylogenetic Analyses of Novel Glucosyltransferase Genes of Mutans Streptococci Isolated from Pig Oral Cavity

Noriko Shinozaki-Kuwahara,Kazuko Takada,Masatomo Hirasawa 한국미생물학회 2008 The journal of microbiology Vol.46 No.2

Nucleotide sequences of water-insoluble glucan-producing glucosyltransferase (gtf) genes of new mutans streptococci isolated from pig oral cavity, Streptococcus orisuis JCM14035, and of Streptococcus criceti HS-6 were determined. The gtf gene of S. orisuis JCM14035 consisted of a 4,401 bp ORF encoding for a 1,466 amino acids, and was revealed to belong to the gtfI group. The percent homology of amino acid sequence of the GTF-I from S. orisuis and S. criceti are 95.0%, however, this score ranges from 77.0% to 78.0% when compared to Streptococcus sobrinus 6715. The deduced N-terminal amino acid sequence was considered responsible for the secretion of GTF-I in S. orisuis JCM14035 and S. criceti HS-6 with high similarity to known GTF proteins from other streptococci. In addition, two other conserved regions, i.e., N-terminal putative catalytic-site and C-terminal glucan binding domain, were also found in GTF-Is of S. orisuis JCM14035 and S. criceti HS-6. Phylogenetic analysis suggested that S. orisuis JCM14035 and S. criceti HS-6, closely related to each other, resemble S. sobrinus and S. downei based on the amino acid sequences of the GTFs

일본 여성의 체형변화 추이

Akio Shinozaki 한국의류산업학회 2005 한국의류산업학회지 Vol.7 No.1

Color Change Analysis for Measuring Capilary Refilling Time

Masayoshi Shinozaki,Toshiya Nakaguchi,Takaaki Nakada,Hideaki Haneishi,Shigeto Oda 한국색채학회 2017 AIC 2017 Jeju Vol.2017 No.10

Capillary refilling time is used to evaluate peripheral circulation. Since the index is measured manually, the diagnosis becomes qualitative. In this study, we prototyped a device to measure capillary refilling time. The device is equipped with a color sensor and a pressure sensitive sensor. Does not use mechanical actuator for compression method. Instead, it is done manually by the measurer. The device constantly feeds back the compressive force of the measurer. This function can eliminate the difference in compressive force of each measurer. It was indicated that capillary refilling time can be measured stably by the operation verification experiment of the device.

보고 : 연구소소개 ; (주)와코루 인간과학연구소

( Akiko Shinozaki ) 한국의류산업학회 2004 한국의류산업학회지 Vol.6 No.6

Regulatory networks of gene expression and signal transduction in abiotic stress response in plants

Kazuko Yamaguchi Shinozaki 한국육종학회 2011 한국육종학회 학술발표회 발표요지 Vol.43 No.-

Single-Stage Endoscopic Stone Extraction and Cholecystectomy during the Same Hospitalization

Toshiaki Terauchi,Hiroharu Shinozaki,Satoshi Shinozaki,Yuichi Sasakura,Masaru Kimata,Junji Furukawa,Alan Kawarai Lefor,Yoshiro Ogata,Kenji Kobayashi 대한소화기내시경학회 2019 Clinical Endoscopy Vol.52 No.1

Background/Aims: The clinical impact of single-stage endoscopic stone extraction by endoscopic retrograde cholangiopancreatography(ERCP) and cholecystectomy during the same hospitalization remains elusive. This study aimed to determine the effcacy and safety ofsingle-stage ERCP and cholecystectomy during the same hospitalization in patients with cholangitis. Methods: We retrospectively reviewed the medical records of 166 patients who underwent ERCP for mild to moderate cholangitis dueto choledocholithiasis secondary to cholecystolithiasis from 2012 to 2016. Results: Complete stone extraction was accomplished in 92% of patients (152/166) at the first ERCP. Among 152 patients whounderwent complete stone extraction, cholecystectomy was scheduled for 119 patients (78%). Cholecystectomy was performed duringthe same hospitalization in 89% of patients (106/119). We compared two groups of patients: those who underwent cholecystectomyduring the same hospitalization (n=106) and those who underwent cholecystectomy during a subsequent hospitalization (n=13). In thedelayed group, cholecystectomy was performed about three months after the first ERCP. There were no significant differences betweenthe groups in terms of operative time, rate of postoperative complications, and interval from cholecystectomy to discharge. Conclusions: Single-stage endoscopic stone extraction is recommended in patients with mild to moderate acute cholangitis due tocholedocholithiasis. The combination of endoscopic stone extraction and cholecystectomy during the same hospitalization is safe andfeasible.