Application of Zen sitting principles to microscopic surgery seating

Area of Science:

• Ergonomics
• Biomechanical Engineering
• Surgical Technology

Background:

• Traditional surgical chairs offer limited support during prolonged procedures.
• Zen sitting postures (Zazen) emphasize sustained, fixed positions, requiring advanced postural support.
• Current seating solutions may not adequately address the biomechanical demands of microscopic surgery.

Purpose of the Study:

• To develop and evaluate an alternative surgical chair incorporating Zen sitting principles.
• To enhance surgeon comfort and support through improved seat pan design and sacral support.
• To investigate the effects of the prototype chair on pelvic tilt and seat pressure distribution.

Main Methods:

• Development of a prototype surgical chair with a 3D-contoured seat pan and sacral support.
• Evaluation using Regionally-Differentiated Pressure Maps (RDPM) to assess seat pressure distribution.
• Comparison of pelvic tilt changes and subjective comfort ratings between prototype and conventional chairs with surgeons operating.

Main Results:

• The prototype chair's sacral support effectively prevented backward pelvic rotation, unlike conventional seating.
• Regionally-Differentiated Pressure Maps indicated a more even pressure distribution with the prototype.
• Surgeons reported greater sitting comfort and support in the prototype chair during constrained operating postures.

Conclusions:

• Concave-shaped seat pans conforming to user anatomy, inspired by Zen sitting principles, can enhance surgical seating ergonomics.
• The prototype chair demonstrates potential for improving surgeon well-being and performance in demanding surgical environments.
• Further research into Zen-inspired ergonomic seating could yield significant benefits for surgeons and other professionals requiring prolonged static postures.