Ergonomic design and evaluation of the handle for an endoscopic dissector

Shimomura, Yoshihiro; Minowa, Keita; Kawahira, Hiroshi; Katsuura, Tetsuo

doi:10.1080/00140139.2015.1075603

Cited by 13 publications

(8 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Results of the ANOVA test shown in Table 2 infers that there was no statistical significance found between the different sizes of the digital board and muscle activation, this may be due to the low values of normalized MVIC values (Shimomura et al, 2016 ). But muscle activation and muscle fatigue results indicating the difference in digital board size and writing area has an impact on muscle activation.…”

Section: Discussionmentioning

confidence: 99%

Impact of digital boards on hand and neck muscle activity during online teaching process

Shankar

Naveenkumar²,

Nithyaprakash

et al. 2022

Educ Inf Technol

View full text Add to dashboard Cite

Academicians across the globe due to Covid 19 shifted to online teaching as a mainstream method by replacing the chalk and talk method. The main objective of this study is to find the impact of different sizes of digital boards used for online teaching on muscle activity and muscle fatigue, and then results are compared with conventional writing. Initially, a questionnaire survey is conducted among 100 college professors about the issue they faced while using online teaching methods. Experimental analysis are then conducted using electromyography sensor (sEMG) among ten college professors and their muscle activity on the dominant hand and neck while writing on two commercially available digital boards namely Type 1 (small writing area) and Type 2 (large writing area). Four muscles namely Flexor carpi radialis, Extensor carpi radialis, Biceps brachii, and Sternocleidomastoid (SCM) are chosen for the study. The results are then compared with muscle activity while writing on conventional A4 sheets. Normalized root mean square (RMS) is used to assess the muscle activity and the trend line of MPF value is utilized to assess the muscle fatigue. The results show that SCM muscle has more muscle activation compared to other selected muscles followed by flexor carpi radialis. Subjective analysis is carried out using the Borg scale, which has reported that Type 2 digital board having larger working area was preferred by the participants as it reduces muscle fatigue.

show abstract

Section: Discussionmentioning

confidence: 99%

Impact of digital boards on hand and neck muscle activity during online teaching process

Shankar

Naveenkumar²,

Nithyaprakash

et al. 2022

Educ Inf Technol

View full text Add to dashboard Cite

show abstract

“…Veelen et al [16] provided a new design of a scissor handle for dissection only and claimed advantages in terms of specialized functional improvements, without being limited by attempts to find solutions to the conflicting requirements of other functions. Shimomura et al [22] focused on the effectiveness of the general grip of the ring handle by increasing the contact area and bringing the finger insertion angle more perpendicular to the finger midline. Sancibrian et al [7] developed a new design of a pistol handle by kinematic analysis and ergonomic simulation with a hand model.…”

Section: Introductionmentioning

confidence: 99%

“…Specific methods providing a more reliable and credible evaluation are required for LS based on ergonomic criteria [7,9]. Surface electromyography (sEMG) has been widely used to observe the muscle activity of the upper limb when working with laparoscopic tools [5,6,22,23,[38][39][40]. A goniometric study was conducted to analyze the neutral and extreme motions of the wrist, hand, forearm, and upper arms [5,7,16,23,26,38].…”

Section: Introductionmentioning

confidence: 99%

Ergonomic Design and Assessment of an Improved Handle for a Laparoscopic Dissector Based on 3D Anthropometry

Jiang

Wang

2023

IJERPH

View full text Add to dashboard Cite

Laparoscopic surgery (LS) has been shown to provide great benefits to patients compared with open surgery. However, surgeons experience discomfort, low-efficiency, and even musculoskeletal disorders (MSDs) because of the poor ergonomic design of laparoscopic instruments. A methodology for the ergonomic design of laparoscopic dissector handles considering three-dimensional (3D) hand anthropometry and dynamic hand positions was addressed in this research. Two types of hand positions for grasping and stretching were scanned from 21 volunteers using a high-resolution 3D scanner. The 3D anthropometric data were extracted from these 3D hand pose models and used to design an improved handle (IH) that provides additional support for the thumb, a better fit to the purlicue, and a more flexible grasp for the index finger. Thirty subjects were invited to evaluate the IH in terms of muscular effort, goniometric study of motion, and efficiency and effectiveness during four trials of a laparoscopic training task. Questionnaires provided subjective parameters for ergonomic assessment. Positive results included less muscle load in the trapezius as well as significant but small angular differences in the upper limb. No significant reduction in the trial time and no increased percentage of the achievement were observed between the IH and the commercial handle (CH). Improved intuitiveness, comfort, precision, stability, and overall satisfaction were reported. IH provides significant ergonomic advantages in laparoscopic training tasks, demonstrating that the proposed methodology based on 3D anthropometry is a powerful tool for the handle design of laparoscopic dissectors and other surgical instruments.

show abstract

“…Other than the above discussed literature, some of the research articles discussed about ergonomic design and evaluation of laparoscopic surgical tools to reduce high pressure areas, muscle strain, and also to increase contact area between hand and the instruments (Sancibrian et al, 2014;Shimomura et al, 2015;Shimomura et al, 2016). Focusing further, researchers also reported based on the ergonomic evaluation of laparoscopic surgical instruments that reduction in pressure points, eliminating uncomfortable body postures and smaller wrist flexion can lessen the discomfort experienced by surgeons (Matern et al, 2005;Herring et al, 2010;Herman et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Individual customization strategy accomplished by developing prototype of a laparoscopic forceps handle using additive manufacturing

Sreekanth¹,

Ranganathan²,

Pugalendhi³

2020

RPJ

View full text Add to dashboard Cite

Purpose Laparoscopic surgeons suffer because of discomfited body posture while performing surgery and experience discomfort owing to lack of customized surgical instruments. Accordingly, this paper aims to recommend an individual customization strategy by developing an ergonomically designed laparoscopic forceps handle and thereby increase the comfort of surgeons. Design/methodology/approach Hand anthropometric parameters of 282 south Indian male subjects are used to customize the handle. uPrint and Objet260 Connex, which works based on fused deposition modeling and PolyJet, respectively, are used to fabricate the prototype of the handle. Design modifications include a pistol-type grip, the increased contact area between the hand and handle, and neutral wrist posture. Findings Ergonomic evaluation parameters such as grip, functionality, comfort and wrist posture using subjective ratings from laparoscopic surgeons were recorded and obtained average values of 4.1, 3.6, 4.1 and 4.1, respectively, based on a five-point ordinal scale. Additionally, stress analysis also confirms the safety of the handle based on von Mises stress criteria. Research limitations/implications Anthropometric data are limited to 282 subjects and subjective evaluation is conducted using a prototype, not the end-use product. Originality/value Evaluation using subjective rating confirms the ascendancy of a modified handle over the existing handle in terms of assessed parameters. The proposed individual customization strategy can be applied for other industrial hand tools to enhance comfort.

show abstract

Ergonomic design and evaluation of the handle for an endoscopic dissector

Cited by 13 publications

References 19 publications

Impact of digital boards on hand and neck muscle activity during online teaching process

Impact of digital boards on hand and neck muscle activity during online teaching process

Ergonomic Design and Assessment of an Improved Handle for a Laparoscopic Dissector Based on 3D Anthropometry

Individual customization strategy accomplished by developing prototype of a laparoscopic forceps handle using additive manufacturing

Contact Info

Product

Resources

About