An Ergonomic Customized-Tool Handle Design for Precision Tools using Additive Manufacturing: A Case Study

González, Alfonso González; Salgado, David Rodríguez; García-Moruno, Lorenzo; Sánchez-Ríos, Alonso

doi:10.3390/app8071200

Cited by 19 publications

(18 citation statements)

References 42 publications

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“…Other studies also indicated that axial handles require significantly more muscle activity than the other common types of instrument handle [37]. In this study, we have analyzed the relationship between the surgeons' ergonomics and performance and different sizes of a novel laparoscopic instrument handle design [11]. The results verify that the use of different instrument handle sizes has consequences on the surgeon's grip pressure and surgical skills.…”

Section: Discussionmentioning

confidence: 56%

“…All participants performed the tasks using the new design of the instrument handle with their dominant hand and a conventional laparoscopic instrument with their non-dominant hand. Four participants were novice Additionally, the parametric 3D CAD design allowed us to easily scale the model to fit different hand sizes in an ergonomic way using the Palm Length Measured (PLM) [11]. Therefore, four different sizes (XS, S, M and L) ( Figure 2) were 3D printed for this study following the specifications defined in previous studies [10,11].…”

Section: Participantsmentioning

confidence: 99%

“…In view of the above, an ergonomic laparoscopic instrument handle has been designed and developed in previous studies [10,11]. This new surgical tool follows the design criteria for universal objects named "Design for All" criteria [12].…”

Section: Introductionmentioning

confidence: 99%

“…This novel instrument handle design is mainly characterized by a power grip that keeps the precision of movements. The parameters of the laparoscopic instrument handle design in relation to the anthropometry of the surgeon's hand are described in [10,11]. This design provides the surgeon with a neutral posture of the wrist thanks to the wide contact surface between the palm and the handle, promoting the reduction in fatigue and possible associated musculoskeletal disorders.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Study of the Use of Different Sizes of an Ergonomic Instrument Handle for Laparoscopic Surgery

et al. 2020

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Previous studies have shown that the handle design of laparoscopic instruments is crucial to surgical performance and surgeon’s ergonomics. In this study, four different sizes of an ergonomic laparoscopic handle design were tested in a blind and randomized fashion with twelve surgeons. They performed three laparoscopic tasks in order to analyze the influence of handle size. Execution time, wrist posture, and finger and palm pressure were evaluated during the performance of each task. The results show a significant reduction in the time required to complete the eye-manual coordination task using the appropriate handle. The incorrectly sized handle resulted in a rise in palm pressure and a reduction in the force exerted by the thumb during the transfer task. In the hand-eye coordination task, the use of the right handle size led to an increase in middle finger pressure. In general, surgeons had an ergonomically adequate wrist flexion in all tasks and an acceptable radio-ulnar deviation during the transfer task using the ergonomic instrument handle. Surgeons found it comfortable the use of the ergonomic handle. Therefore, the use of an appropriately sized instrument handle allows surgeons to improve ergonomics and surgical performance during the laparoscopic practice.

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Section: Discussionmentioning

confidence: 56%

Section: Participantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative Study of the Use of Different Sizes of an Ergonomic Instrument Handle for Laparoscopic Surgery

et al. 2020

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“…The application of ergonomic criterions also in equipment manufacturing, as well as in material handling activities, could minimize the impact of WMSDs [15, 16].…”

Section: Discussionmentioning

confidence: 99%

Risk assessment of upper limbs repetitive movements in a fish industry

et al. 2019

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Objective Work-related Musculoskeletal Disorders (WMSDs) have a multifactorial origin: work-related risk factors and individual factors (age, sex, anthropometric characteristics). The purpose of the current study was the risk assessment of upper limb-WMSDs of workers engaged in tasks of anchovies filleting and packaging in a fish industry considering the ergonomic evaluation and the painful symptomatology complained by employees of different age. The activities were analysed by the American Conference Governmental Industrial Hygienists (ACGIH) method, the Strain Index (SI) method, the Rapid Upper Limb Assessment (RULA) method as well as the Occupational Rapid Assessment (OCRA) checklist. Workers answered the Italian version of the Nordic Musculoskeletal Questionnaire (NMQ). Results The ACGIH method showed that packaging needs greater protection, while filleting requires ergonomic interventions. The SI showed a significant increasing risk for both tasks. The final score identified by RULA, for tasks of fish filleting and packaging, suggested a medium level of action, therefore were required additional observations. By OCRA checklist the final score for both tasks denoted a high risk.

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Female Surgical Ergonomics in Otolaryngology: A Qualitative Study

et al. 2023

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ObjectiveTo explore the surgical ergonomic challenges experienced by women in otolaryngology, identify specific equipment that is ergonomically challenging, and assess the impact of suboptimal ergonomics on female otolaryngologists.MethodsWe performed a qualitative study using an interpretive framework rooted in grounded theory. We performed semi‐structured qualitative interviews of 14 female otolaryngologists from nine institutions at various stages in training and across subspecialties. Interviews were independently analyzed by thematic content analysis by two researchers and inter‐rater reliability was assessed via Cohen's kappa. Differing opinions were reconciled via discussion.ResultsParticipants noted difficulties with equipment including microscopes, chairs, step stools, and tables as well as difficulty using larger surgical instruments, preference for smaller instruments, frustration with lack of smaller instruments, and a desire for a larger spectrum of instrument sizes. Participants reported neck, hand, and back pain associated with operating. Participants suggested modifications to the operative environment, including a wider variety of instrument sizes, adjustable instruments, and more focus and attention on ergonomic issues and the range of surgeon physiques. Participants felt that optimizing their operating room set‐up was an additional burden on them, and that lack of inclusive instrumentation affected their sense of belonging. Participants emphasized positive stories of mentorship and empowerment from peers and superiors of all genders.ConclusionFemale otolaryngologists face unique ergonomic challenges. As the otolaryngology workforce becomes increasingly diverse, it is important to address the needs of a diverse set of physiques to avoid inadvertently disadvantaging certain individuals.Level of EvidenceN/A Laryngoscope, 2023

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An Ergonomic Customized-Tool Handle Design for Precision Tools using Additive Manufacturing: A Case Study

Cited by 19 publications

References 42 publications

Comparative Study of the Use of Different Sizes of an Ergonomic Instrument Handle for Laparoscopic Surgery

Comparative Study of the Use of Different Sizes of an Ergonomic Instrument Handle for Laparoscopic Surgery

Risk assessment of upper limbs repetitive movements in a fish industry

Female Surgical Ergonomics in Otolaryngology: A Qualitative Study

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