Abstract: A speculum configured for attachment to an otoscope attachment of a medical examination instrument is provided in an embodiment herein. The speculum includes a proximate end, a distal end, and a speculum body extending from the proximate end to the distal end. The proximate end is configured for attachment to a first end of the otoscope attachment, and the distal end is configured for penetration into an orfice of a subject. The adjustable speculum further includes at least one flange, wherein the at least one flange is adjustably positioned on the speculum body between the proximate end and the distal end to limit a depth of the penetration of the speculum in the orfice.

Abstract: A speculum configured for attachment to an otoscope attachment of a medical examination instrument is provided in an embodiment herein. The speculum includes a proximate end, a distal end, and a speculum body extending from the proximate end to the distal end. The proximate end is configured for attachment to a first end of the otoscope attachment, and the distal end is configured for penetration into an orfice of a subject. The adjustable speculum further includes at least one flange, wherein the at least one flange is adjustably positioned on the speculum body between the proximate end and the distal end to limit a depth of the penetration of the speculum in the orfice.

Abstract: A task chair, including a backrest assembly and a seat assembly pivotally coupled both to one another and to side portions of a fixed yoke member for synchronized movement, in which the seat of the seat assembly moves upwardly and forwardly concurrently with recline of the backrest of the backrest assembly. The chair further includes a tension assembly including an elongate tension member, such as a leaf spring, secured at one end thereof to the yoke member, and a contact member, such as a contact roller, adjustably mounted to the seat assembly. The contact member engages the tension member such that the tension member resists recline of the backrest assembly and concurrent movement of the seat assembly from their initial positions, and also provides a restoring force which tends to move the backrest to its initial upright position and the seat to its initial rearward and lowered position.

Abstract: A backrest depth adjustment mechanism which allows adjustment of the backrest assembly in a front-to-back manner with respect to the seat. The backrest assembly generally includes a backrest frame supporting the backrest. The backrest frame includes opposite end portions, and at least one of the end portions includes a backrest depth adjustment mechanism. The backrest depth adjustment mechanism includes a stationary portion and a movable portion, wherein the movable portion is movable with respect to the stationary portion. An actuator mechanism allows the user to actuate the backrest depth adjustment mechanism to move the backrest to a desired depth position.

Abstract: A task chair, including a backrest assembly and a seat assembly pivotally coupled both to one another and to side portions of a fixed yoke member for synchronized movement, in which the seat of the seat assembly moves upwardly and forwardly concurrently with recline of the backrest of the backrest assembly. The chair further includes a tension assembly including an elongate tension member, such as a leaf spring, secured at one end thereof to the yoke member, and a contact member, such as a contact roller, adjustably mounted to the seat assembly. The contact member engages the tension member such that the tension member resists recline of the backrest assembly and concurrent movement of the seat assembly from their initial positions, and also provides a restoring force which tends to move the backrest to its initial upright position and the seat to its initial rearward and lowered position.

Abstract: A task chair including a seat support structure, a backrest frame attached to the seat support structure, and a backrest supported by the backrest frame. The backrest includes a back support surface which may ergonomically conform to a seated user when the user shifts positions while sitting in the chair. The back support surface includes rigid and flexible portions connected to one another, the flexible portions allowing resilient flexing of the back support surface to create conformance zones which dynamically support the back of a seated user in an ergonomic manner.