Medical equipment ergonomics holds prime position in healthcare sector

Technological advances in the development of portable medical equipment are presenting new design challenges for manufacturers as they seek to meet more demanding ergonomic requirements to improve operator usability and enhance patient experience. Whether it's diagnostic and imaging equipment, dispensing carts, display screens or charting stations, design engineers need to focus on choosing intuitive products designed with the lowest operating efforts. Hinges and arms with integrated positioning technology deliver better usability and can provide a more ergonomic feel for those who use this equipment. Worldwide research affirms that ergonomic medical equipment should be designed to accommodate such factors as size and manoeuvrability, ease and range of adjustments, weight capacity, application limitations and ease of cleaning. Furthermore, all such equipment should enable easy and intuitive use in their primary functions, offer simplicity of operation within their environment and empathise with the physical and intellectual abilities of operators. Designing for usability Today's technology allows previously larger and more stationary equipment to become more portable and accessible and manufacturers are investing more each year in improved designs. According to analysts, the industry is forecast to grow by more than 8% annually, surpassing £300 billion in 2016. Specifically, the endoscopy equipment segment is expected to grow 6.4% in 2012, the ultrasound segment is expected to grow 44% by 2015, and the point-of-care diagnostic segment is expected to grow 9% annually through 2016. By integrating positioning technologies into equipment designs, engineers can meet the need for mobility while simplifying operation. Positioning technology improves functionality, usability and ergonomics, saving the end-user time and labour. The explosion of touchscreens and imaging technology has changed the requirement for display mounting. Equipment, such as endoscopy machines, is often fixed to carts or other portable devices. Using mounts and arms in these applications can help equipment designers achieve positioning that is more ergonomic. Employees are discouraged from working for more than four hours per day with their necks bent more than 45o. This defines that display screens should be positioned at optimal viewing angle, 15o below the horizontal line of sight. Thus, it is critical for operators to be able to move screens and input devices into comfortable working positions with arms and mounts that support the display screen when stationery, yet are easy to move when re-positioning is required. Constant torque positioning technology offers a full range of motion and can hold a display screen in a precise position without any set screws, torque handles or other user intervention. And, it enables screens to withstand vibration, bumping and drift during transportation. Tilt-only display mounts, such as Southco's T Series, enable effortless display positioning and infinite angle options in medical equipment only requiring tilt functionality – such as a monitor mounted on a dispensing cart. For applications requiring more adjustment, the company offers a tilt and swivel mount that tilts vertically and horizontally, with a range of motion stops for added flexibility. For more unlimited mobility, articulated arms offer a full range of motion and can be moved in multiple directions and angles with minimum force. Hinging technology Positioning technology in medical equipment is not just limited to mounts and arms. Constant torque hinges, which use engineered friction systems to provide continuous resistance against motion, can be incorporated into a variety of applications. These hinges are ideal where it is necessary to easily open and close doors, such as wall charting stations, medical cabinets and diagnostic equipment with heavy lids. A variety of hinge options that can improve ergonomics in medical equipment applications are available. A counterbalanced hinge allows the weight of an object – such as a heavy tray of lid – to fold up easily. They provide lift assistance and feature improved, long-term reliability when compared with gas struts, which may fall due to loss of pressure. Another positioning option is detent hinges. These provide positive retention at pre-determined points, allowing operatives to hold panels open providing rapid access while keeping both hands free. Looking forward Medical equipment manufacturers must be prepared for constant changes in how healthcare professionals use traditional medical equipment. The shift towards mobility and portability in equipment designs demands improved operation and an ergonomic focus. Engineers should select components that are both functional and able to meet ergonomic goals. Through the integration of positioning solutions - such as mounts and control arms – operators of medical equipment will experience ease of use, as well as improved balance, control and reliability.