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Ergonomics of disposable handles for minimally invasive surgery.
Surg Endosc. 2010 May; 24(5):992-1004.SE

Abstract

BACKGROUND

The ergonomic deficiencies of currently available minimally invasive surgery (MIS) instrument handles have been addressed in many studies. In this study, a new ergonomic pistol handle concept, realized as a prototype, and two disposable ring handles were investigated according to ergonomic properties set by new European standards.

METHODS

In this study, 25 volunteers performed four practical tasks to evaluate the ergonomics of the handles used in standard operating procedures (e.g., measuring a suture and cutting to length, precise maneuvering and targeting, and dissection of a gallbladder). Moreover, 20 participants underwent electromyography (EMG) tests to measure the muscle strain they experienced while carrying out the basic functions (grasp, rotate, and maneuver) in the x, y, and z axes. The data measured included the number of errors, the time required for task completion, perception of pressure areas, and EMG data. The values for usability in the test were effectiveness, efficiency, and user satisfaction. Surveys relating to the subjective rating were completed after each task for each of the three handles tested.

RESULTS

Each handle except the new prototype caused pressure areas and pain. Extreme differences in muscle strain could not be observed for any of the three handles. Experienced surgeons worked more quickly with the prototype when measuring and cutting a suture (approximately 20%) and during precise maneuvering and targeting (approximately 20%). On the other hand, they completed the dissection task faster with the handle manufactured by Ethicon. Fewer errors were made with the prototype in dissection of the gallbladder. In contrast to the handles available on the market, the prototype was always rated as positive by the volunteers in the subjective surveys.

CONCLUSIONS

None of the handles could fulfil all of the requirements with top scores. Each handle had its advantages and disadvantages. In contrast to the ring handles, the volunteers could fulfil most of the tasks more efficiently using the prototype handle without any remarkable pressure areas, cramps, or pain.

Authors+Show Affiliations

Experimental OR and Ergonomics, University Hospital of Tübingen, Ernst-Simon-Strasse 16, 72072 Tübingen, Germany. dirk.buechel@experimental-op.deNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

19866236

Citation

Büchel, D, et al. "Ergonomics of Disposable Handles for Minimally Invasive Surgery." Surgical Endoscopy, vol. 24, no. 5, 2010, pp. 992-1004.
Büchel D, Mårvik R, Hallabrin B, et al. Ergonomics of disposable handles for minimally invasive surgery. Surg Endosc. 2010;24(5):992-1004.
Büchel, D., Mårvik, R., Hallabrin, B., & Matern, U. (2010). Ergonomics of disposable handles for minimally invasive surgery. Surgical Endoscopy, 24(5), 992-1004. https://doi.org/10.1007/s00464-009-0714-x
Büchel D, et al. Ergonomics of Disposable Handles for Minimally Invasive Surgery. Surg Endosc. 2010;24(5):992-1004. PubMed PMID: 19866236.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ergonomics of disposable handles for minimally invasive surgery. AU - Büchel,D, AU - Mårvik,R, AU - Hallabrin,B, AU - Matern,U, Y1 - 2009/10/29/ PY - 2009/03/04/received PY - 2009/09/20/accepted PY - 2009/10/30/entrez PY - 2009/10/30/pubmed PY - 2010/8/18/medline SP - 992 EP - 1004 JF - Surgical endoscopy JO - Surg Endosc VL - 24 IS - 5 N2 - BACKGROUND: The ergonomic deficiencies of currently available minimally invasive surgery (MIS) instrument handles have been addressed in many studies. In this study, a new ergonomic pistol handle concept, realized as a prototype, and two disposable ring handles were investigated according to ergonomic properties set by new European standards. METHODS: In this study, 25 volunteers performed four practical tasks to evaluate the ergonomics of the handles used in standard operating procedures (e.g., measuring a suture and cutting to length, precise maneuvering and targeting, and dissection of a gallbladder). Moreover, 20 participants underwent electromyography (EMG) tests to measure the muscle strain they experienced while carrying out the basic functions (grasp, rotate, and maneuver) in the x, y, and z axes. The data measured included the number of errors, the time required for task completion, perception of pressure areas, and EMG data. The values for usability in the test were effectiveness, efficiency, and user satisfaction. Surveys relating to the subjective rating were completed after each task for each of the three handles tested. RESULTS: Each handle except the new prototype caused pressure areas and pain. Extreme differences in muscle strain could not be observed for any of the three handles. Experienced surgeons worked more quickly with the prototype when measuring and cutting a suture (approximately 20%) and during precise maneuvering and targeting (approximately 20%). On the other hand, they completed the dissection task faster with the handle manufactured by Ethicon. Fewer errors were made with the prototype in dissection of the gallbladder. In contrast to the handles available on the market, the prototype was always rated as positive by the volunteers in the subjective surveys. CONCLUSIONS: None of the handles could fulfil all of the requirements with top scores. Each handle had its advantages and disadvantages. In contrast to the ring handles, the volunteers could fulfil most of the tasks more efficiently using the prototype handle without any remarkable pressure areas, cramps, or pain. SN - 1432-2218 UR - https://www.unboundmedicine.com/medline/citation/19866236/Ergonomics_of_disposable_handles_for_minimally_invasive_surgery_ L2 - https://doi.org/10.1007/s00464-009-0714-x DB - PRIME DP - Unbound Medicine ER -