A medical instrument grip device consisting of an open tubular element of elastic material for an elongated medical instrument comprises an elongated element having a gripping area and a head element being attached to one of the ends of the elongated element. The tubular element is open in both longitudinal ends and is configured to switch between a rolled up state and a fully unrolled state. Further, the tubular element is configured such that the head element may be forced through the inner opening of the stretched tubular element being in its rolled up state and to create a tight fit around the gripping area when being in its unrolled state.

A thermal defogging system and method for an optical instrument is described. In one embodiment, the thermal defogging system for an optical instrument is comprised of: at least a primary housing, the primary housing defining an aperture for transmission of optical signals, a transparent element adapted to be aligned with the aperture for transmission of optical signals, at least one side of the transparent element facing the external environment; and a transparent conductive layer covering an area at least as large as the optical footprint of the transmitted optical signal through the transparent element, wherein responsive to the application of electrical power to the transparent conductive layer, the transparent conductive layer generates heat that is thermally communicated to the least one side of the transparent element facing the external environment.

A number of osteotomes, n, form a set of osteotomes, for use during a ridge expansion osteotomy to reduce alveolar stress and to reduce likelihood of a fracture, with each osteotome of the set having a conical working tip with a free end having a diameter .sub.An, and a working base .sub.Bn; a first osteotome, n=1, of the set has the working tip formed with a first diameter, .sub.A1=Y, at the free end, and with a second diameter, .sub.B1X, at the working base, the second diameter being larger than the first diameter, X>Y; and wherein for successive osteotomes of the set, the diameter at the free end increases as an alternate step and regressive step sequence, and the diameter at the working base alternately increases by a constant increment c, as a step function.

A number of osteotomes, n, form a set of osteotomes, for use during a ridge expansion osteotomy to reduce alveolar stress and to reduce likelihood of a fracture, with each osteotome of the set having a conical working tip with a free end having a diameter .sub.An, and a working base .sub.Bn; a first osteotome, n=1, of the set has the working tip formed with a first diameter, .sub.A1=Y, at the free end, and with a second diameter, .sub.B1X, at the working base, the second diameter being larger than the first diameter, X>Y; and wherein for successive osteotomes of the set, the diameter at the free end increases as an alternate step and regressive step sequence, and the diameter at the working base alternately increases by a constant increment c, as a step function.

A method of manufacturing a dental prophy angle with a wiper assembly is described. The prophy angle comprises a neck section and the neck section has an outer surface. The method comprises the steps of manufacturing a dental prophy angle, manufacturing a wiper assembly by molding a base, the base having an undersurface, the undersurface configured to match the outer surface of the neck section, molding a shield, the shield assembly comprising a carriage and a wiper, attaching the base to the shield assembly, and attaching the undersurface to the outer surface.

A method of manufacturing a dental prophy angle with a wiper assembly is described. The prophy angle comprises a neck section and the neck section has an outer surface. The method comprises the steps of manufacturing a dental prophy angle, manufacturing a wiper assembly by molding a base, the base having an undersurface, the undersurface configured to match the outer surface of the neck section, molding a shield, the shield assembly comprising a carriage and a wiper, attaching the base to the shield assembly, and attaching the undersurface to the outer surface.

The present invention relates to a direct cooling type handpiece, and more particularly, to a direct cooling type handpiece that is configured to allow an outer housing and a core to be spaced apart from each other and thus to allow the core to be fixed to a PCB and a support cap, so that air flows to the space between the outer housing and the core, thus efficiently cooling the high heat generated from the handpiece while the handpiece is being operated.

The present invention relates to a direct cooling type handpiece, and more particularly, to a direct cooling type handpiece that is configured to allow an outer housing and a core to be spaced apart from each other and thus to allow the core to be fixed to a PCB and a support cap, so that air flows to the space between the outer housing and the core, thus efficiently cooling the high heat generated from the handpiece while the handpiece is being operated.

The invention relates to a hand-held surgical device, particularly for use in oral surgery, comprising a rotatable tool (2), a head (4) of said tool (2) having a hollow-cylindrical design, and an active region (5), particularly for machining bones, being arranged at a distal edge (3) of said head (4), characterised in that a protection device (1) is arranged which partially surrounds the distal edge (3) of the tool (2) and in some sections extends in the axial direction beyond said distal edge (3) such that only a circular arc (6) of the distal edge (3) serves as the active region (5). The invention also relates to a protection device (1) having a connecting element for detachably securing to a hand-held surgical device, particularly for use in oral surgery, wherein the protection device (1), when connected to said band-held device, partially surrounds a distal edge (3) of a tool (2) connected to the hand-held surgical device and in some sections extends in the axial direction beyond said distal edge (3) such that only a circular arc (6) of the distal edge (3) serves as the active region (5), particularly for machining bones.