Category: Hospital Material Movement

Remember the Pushmi-pullyu (push-me-pull-you) from Hugh Lofting’s Dr. Dolittle stories for children? It was an antelope with two heads, one on each end of its body. (In the popular Eddie Murphy movies, they used a llama.) Whenever the creature wanted to move, both heads would take off at once, pushing and pulling back and forth and going nowhere. Since pushing and pulling exert two of the greatest stresses on the body, the poor critter must have been in constant need of the good doctor’s chiropractic skills! That same Pushmi-pullyu mentality toward workplace task and equipment design can put your employees at serious risk of sustaining disabling musculoskeletal injuries.

Pushing, pulling, lifting and carrying tasks place a greater strain on the human body’s soft tissues — muscles and tendons — than any other tasks. These tasks are also universal to nearly all work environments. Wheeled carts, platforms or equipment must be loaded and unloaded and pushed and pulled through manufacturing plants, distribution centers, hospital corridors, grocery store aisles, hotel hallways, office buildings and retail establishments. Most jobs require at least occasional pushing, pulling, lifting or carrying; and many jobs require workers to spend their entire workday engaged in these activities, performing the same, repetitive movements hour after hour. The cumulative wear and tear on the body can lead to serious injury of soft tissues and eventual disability.

Too often tasks, work spaces and equipment aren’t designed to accommodate the natural differences in the size and physical capabilities of workers. A task performed first shift by a six-foot, 180-pound, 25-year-old male may be performed second shift by a five-foot three-inch, 130-pound, 45-year-old female and third shift by a five-foot seven-inch, 260-pound, 60-year-old male. Because work tasks and equipment are usually designed around a “standard” worker type — which, unfortunately, few workers match — most workers are forced to assume awkward postures while exerting force to complete work tasks. Serious, debilitating strains and sprains can result, particularly when these actions are repeated over time.

When soft tissues in the arms, shoulders, back and legs are injured, the tissues recover, though it may take some time. But repeated injury, particularly when it occurs before tissues have had time to fully recover, interferes with the body’s natural healing process, overwhelming the body’s ability to recover and leading to permanent, disabling injury. Such cumulative traumas are called musculoskeletal disorders. Also referred to as repetitive stress injuries and repetitive motion injuries, these serious, disabling strains and sprains cost U.S. businesses tens of billions of dollars each year.

Next time: Ergonomics; just what the doctor ordered.

Pushing, pulling, lifting and carrying tasks place a greater strain on the human body’s soft tissues — muscles and tendons — than any other workplace tasks. Universal to nearly every work environment, these tasks are the source of musculoskeletal injuries that annually cost U.S. businesses tens of billions of dollars. Fortunately, most of these injuries are preventable. The debilitating and disabling strains and sprains that annually plague millions of U.S. workers can be largely prevented with the adoption of ergonomic practices and the use of ergonomically-designed equipment.

Workers come in all shapes and sizes, but work tasks and equipment are usually “one size fits all.” Most workplace musculoskeletal injuries occur when workers are forced to adapt their bodies to fit the task or equipment, torquing their bodies into awkward postures that increase stress on muscles and tendons. For example, when pushing, pulling or maneuvering a heavy wheeled cart, a worker must exert significant force to overcome rolling resistance. While handholds designed to assist in force delivery may be at the correct level for an average-sized male, even an averaged-sized female worker will have to stretch and strain to move the cart, placing undue stress on back, leg, shoulder and arm muscles. The risk of musculoskeletal injury is great when worker and equipment are not a perfect fit.

Ergonomics is the science of fitting the equipment or task to the capabilities of the worker to prevent musculoskeletal injury. Ergonomically-designed equipment, like the powered carts and movers designed and manufactured by DJ Products, takes into account a host of variables that affect worker production and efficiency. The type of task, force required, worker gender and diversity, optimal handhold height, distance, and frequency of the task must all be considered in the design of ergonomic equipment.

DJ Products is a major innovator in the design and manufacture of ergonomic solutions to material handling situations. Our ergonomically-designed electric and motorized carts, tugs and movers eliminate the strains and pains associated with manually pushing and pulling heavy carts, equipment or materials in a wide variety of industrial and retail environments. Our products are less costly, smaller and more maneuverable than traditional electric equipment used to move carts and equipment on production floors and in warehouses. Our battery-powered walk-behind movers provide maximum operator control and safety while offering superior maneuverability, even in narrow or tight spaces like busy hospital corridors and crowded grocery aisles. As a leading manufacturer of ergonomic powered carts and movers, DJ Products has built a reputation for developing ergonomic solutions to unique and specialized customer material handling challenges. Contact our ergonomic sales engineers today for an evaluation of your ergonomic needs.