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Ota G, Kaneda Y, Maeda Y, Oiwa K, Ae R, Shiozawa M, Horie H, Sata N, Kawahira H. A Low Mean Closing Load and a Decrease in Load Change at the Tip Increase the Comfort of Scissors. Cureus 2024; 16:e51900. [PMID: 38333509 PMCID: PMC10850003 DOI: 10.7759/cureus.51900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2024] [Indexed: 02/10/2024] Open
Abstract
Introduction During surgery, surgeons intuitively recognize when they are using dull scissors and find them difficult to use. The purpose of this study was to objectively evaluate the physical characteristics of scissors and the comfort reported by surgeons to develop objective quality control standards for scissors used in surgery. Methods Sensory and measurement tests were conducted to evaluate the comfort and physical characteristics of ten pairs of Cooper scissors. As a sensory test, thirty-one volunteer surgeons opened and closed the scissors and selected three that felt comfortable and three that were uncomfortable. The results were scored. For measurement, a load was applied to the handle of the scissors. The load pressure and displacement of the width between each handle when the scissors were closed were measured. Results A strong negative correlation was found between the total comfort score and the mean load value between sensory and measurement tests (r=-0.717, p=0.0195). The correlation between the total score and the change in load at the tip showed a moderate negative correlation (r=-0.687, p=0.0282). Multiple regression analysis showed that the change in load at the tip was an independent factor affecting the total score. Conclusions Surgeons consider scissors with a low mean load required to close the scissors and a small change in load at the tip to be comfortable. The mean load on scissors and the change in load at the tip should be considered in the development of quality control standards for scissors used in surgery.
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Affiliation(s)
- Gaku Ota
- Department of Surgery, Jichi Medical University, Division of Gastroenterological, General and Transplant Surgery, Shimotsuke, JPN
| | - Yuji Kaneda
- Department of Surgery, Jichi Medical University, Division of Gastroenterological, General and Transplant Surgery, Shimotsuke, JPN
- Medical Simulation Center, Jichi Medical University, Shimotsuke, JPN
| | - Yoshitaka Maeda
- Medical Simulation Center, Jichi Medical University, Shimotsuke, JPN
| | - Kosuke Oiwa
- Department of Information and Management Systems Engineering, Nagaoka University of Technology, Nagaoka, JPN
| | - Ryusuke Ae
- Center for Community Medicine, Jichi Medical University, Division of Public Health, Shimotsuke, JPN
| | - Mikio Shiozawa
- Department of Surgery, Tochigi Medical Center Shimotsuga, Tochigi, JPN
| | - Hisanaga Horie
- Department of Surgery, Jichi Medical University, Division of Gastroenterological, General and Transplant Surgery, Shimotsuke, JPN
| | - Naohiro Sata
- Department of Surgery, Jichi Medical University, Division of Gastroenterological, General and Transplant Surgery, Shimotsuke, JPN
| | - Hiroshi Kawahira
- Department of Surgery, Jichi Medical University, Division of Gastroenterological, General and Transplant Surgery, Shimotsuke, JPN
- Medical Simulation Center, Jichi Medical University, Shimotsuke, JPN
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Liu YP, Chen HC, Hong WH, Weng WC. Effects of different tools and working height on physical workload in vertical cleaning tasks applying ambient control techniques. APPLIED ERGONOMICS 2022; 104:103818. [PMID: 35738213 DOI: 10.1016/j.apergo.2022.103818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 05/29/2022] [Accepted: 05/31/2022] [Indexed: 05/16/2023]
Abstract
This study aimed to investigate the effects of different tools and working heights on physical workloads in vertical cleaning tasks. Thirty healthy adults were recruited to use a rag and a long-handle tool (LHT) to simulate cleaning operations on the Wii Fit board surfaces of 3 different heights, respectively. Participants used a lower 50th percentile force but were required to spend a longer time to finish the task while using an LHT than using a rag. The tool preferences were the main factors considered for efficiency and personal subjective workload and physiological load. 76.6% of the participants preferred to use the LHT instead of the rag at a high task height, but 70% preferred to use the rag when working at a medium task height. For low workload cleaning tasks on vertical surfaces, employers should provide cleaners with different handle lengths tools to choose from to reduce the cleaner's workload.
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Affiliation(s)
- Yung-Ping Liu
- Department of Industrial Engineering and Management, Chaoyang University of Technology, Taichung, 413310, Taiwan
| | - Hsieh-Ching Chen
- Department of Industrial Engineering and Management, National Taipei University of Technology, Taipei, 106344, Taiwan
| | - Wei-Hsien Hong
- Department of Sports Medicine, China Medical University, Taichung, 406040, Taiwan.
| | - Wei-Chun Weng
- Department of Industrial Engineering and Management, National Taipei University of Technology, Taipei, 106344, Taiwan
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