A base for a chair is described. The example base for the chair includes a central support coupled to a seat of the chair, a first pair of legs extending radially from the central support, and a second pair of legs extending radially from the central support. The first pair of legs extend in a direction opposite the second pair of legs. A first angle between the first pair of legs is larger than a second angle between the second pair of legs. Respective legs of each of the first pair of legs and the second pair of legs are rotationally fixed relative to the seat of the chair.

A base for a chair is described. The example base for the chair includes a central support coupled to a seat of the chair, a first pair of legs extending radially from the central support, and a second pair of legs extending radially from the central support. The first pair of legs extend in a direction opposite the second pair of legs. A first angle between the first pair of legs is larger than a second angle between the second pair of legs. Respective legs of each of the first pair of legs and the second pair of legs are rotationally fixed relative to the seat of the chair.

Equipment for health care centers is provided which combines, in one unit, a chair, analysis and/or treatment instruments, and various accessories, such as lighting. The equipment can be employed for example in connection with ophthalmic procedures.

Equipment for health care centers is provided which combines, in one unit, a chair, analysis and/or treatment instruments, and various accessories, such as lighting. The equipment can be employed for example in connection with ophthalmic procedures.

A patient support apparatus including a seat section, a backrest section that is movable relative to the seat section, and an arm supported relative to the seat section. The arm is adapted to move between a first position adjacent the seat section for use as an arm rest for a person sitting on the patient support apparatus to a raised second position adjacent the backrest section. The arm and the backrest section are coupled together when the arm is in the raised second position wherein the arm moves with the backrest section.

A patient support apparatus including a seat section, a backrest section that is movable relative to the seat section, and an arm supported relative to the seat section. The arm is adapted to move between a first position adjacent the seat section for use as an arm rest for a person sitting on the patient support apparatus to a raised second position adjacent the backrest section. The arm and the backrest section are coupled together when the arm is in the raised second position wherein the arm moves with the backrest section.

Aspects of this invention include new measures of hip-torso posture and strength of the legs. These new measures are made using new tools. Measurement of hip-torso posture can be made using simple tools. One such tool can be applied to the hips, and indicates relative angle of the spine. Photographic tools can be used to analyze posture relative to vertical references. Measurement of leg strength can be made using a device incorporating accelerometers and computer implemented instructions to quantify forward/backward, left/right, or rotational acceleration when the legs are challenged. Other aspects include devices with computer implemented instructions to quantify leg strength. Using the new devices and methods, one can objectively determine postures that are ergonomically appropriate for persons sitting and working at workstations.

Aspects of this invention include new measures of hip-torso posture and strength of the legs. These new measures are made using new tools. Measurement of hip-torso posture can be made using simple tools. One such tool can be applied to the hips, and indicates relative angle of the spine. Photographic tools can be used to analyze posture relative to vertical references. Measurement of leg strength can be made using a device incorporating accelerometers and computer implemented instructions to quantify forward/backward, left/right, or rotational acceleration when the legs are challenged. Other aspects include devices with computer implemented instructions to quantify leg strength. Using the new devices and methods, one can objectively determine postures that are ergonomically appropriate for persons sitting and working at workstations.

A chair for supporting a body of a user in a substantially upright position relative to a vertical-axis; the chair includes a frame, a chest-support, a seat and at least one knee-support. In a preferred embodiment, the chair includes a tray configured to hold items/tools such as dentist equipment. The chair is useful for supporting the body of the user who needs to be seated for a prolonged period of time, to prevent un-comfort associated with the same.

A chair for supporting a body of a user in a substantially upright position relative to a vertical-axis; the chair includes a frame, a chest-support, a seat and at least one knee-support. In a preferred embodiment, the chair includes a tray configured to hold items/tools such as dentist equipment. The chair is useful for supporting the body of the user who needs to be seated for a prolonged period of time, to prevent un-comfort associated with the same.