An apparatus for delivering a flow of gas having: a controller; a housing defining a gas-flow passage flowing a high concentration oxygen gas; a motor with windings, resilient bearing mounts and an impeller to deliver the gas through the gas-flow passage; a flexible printed circuit electrically connecting the motor to the controller and sensor system; and an elastomeric shield to pneumatically isolate the windings from the gas-flow passage.

A flexible, elongated catheter tube having distal and proximal ends and a laser cut section there between. The laser cut section makes up a majority of the catheter length and is cut in a continuous helical pattern forming interlocking teeth which can be sinusoidal, triangular, square or like shapes, preferably sinusoidal. The interior of the tube has a polymeric layer which forms the internal lumen of the catheter. The exterior of the tube has a polymer coating. A short portion of the distal end is uncut and is followed by a narrower terminal section which can be tapered for better blockage penetration. The interlocking teeth disengage and reengage in a fish-scale manner without undergoing plastic deformation of the metal tube and without substantial polymer separation from the tube exterior.

Disclosed is a ceramic sliding partner for a sliding bearing, said sliding partner being made at least in part, preferably entirely, of a ceramic foam. The ceramic sliding partner comprises at least one sliding surface on which a sliding partner can move, said sliding surface being made at least in part, preferably entirely, of a ceramic foam.

A bearing configuration for the rotational mounting of a component provided for rotational movement includes a positionally fixed sleeve on which the component is rotatably mounted by one or more bearing elements or a plain-bearing. A pressure element is provided in the interior of the sleeve for readily expanding the sleeve and placing the sleeve in frictional contact with the component which is spaced apart from the sleeve by an air gap. A medical examination device having the bearing configuration is also provided.

The present disclosure relates to an ultrasonic imaging apparatus that has a tolerance for easy assembly and reduces shaking and noise by reducing the tolerance after assembly. The ultrasonic imaging apparatus includes a main body, a probe connected to the main body to irradiate and receive ultrasonic waves and to transmit the ultrasonic signals to the main body, a control panel configured to control the main body or the probe, and a moving device configured to connect the control panel and the main body and to move the control panel with respect to the main body in the upward and downward directions, wherein the moving device includes a housing fixed to the main body, a moving member configured to be movable with respect to the housing in the upward and downward directions, and a regulating bearing installed in the housing and configured to assist the upward and downward movement of the moving member by coming into rolling contact with the moving member and to regulate a gap with the moving member.

A tubular shaft for a tubular shaft instrument includes a hollow shaft component, an actuating rod arranged in the hollow shaft component, and functional elements that are attached at the distal ends of the shaft component and/or of the actuating rod. The actuating rod is axially displaceable relative to the hollow shaft component to move the distal sections of the functional elements toward one another, past one another, and/or away from one another. The actuating rod includes at least one bending area in which flexible segments and support segments alternate and in which the actuating rod has significantly less bending resistance than outside the at least one bending area. A friction-reducing layer on the at least one bending area of the actuating rod reduces the friction of the actuating rod on the inside wall of the shaft component.

In certain embodiments, apparatus for self-aligning elements of coupled platforms includes a radially repulsive magnetic bearing. The radially repulsive magnetic bearing includes a first axially polarized magnet and a second axially polarized magnet that is concentrically disposed around the first axially polarized magnet and radially repulsive to the first axially polarized magnet. The radially repulsive magnetic bearing is configured to align a first element of a first platform with a second element of a second platform when the first and second platforms are coupled together.

A magnetic bearing having a first bearing ring and a second bearing ring arranged concentrically in relation to the first bearing ring. The first bearing ring and the second bearing ring are mounted so as to be rotatable with respect to each other about an axis of rotation by means of electromagnets. The first bearing ring has a first magnet row and a second magnet row. The magnet rows each include electromagnets arranged at a distance from one another in a circumferential direction of the first bearing ring. The electromagnets of the magnet rows are oriented such that they can each exert a magnetic force on the second bearing ring, which magnetic force is oriented transversely to the axis of rotation and transversely to a radial plane which is arranged perpendicularly to the axis of rotation. The disclosure further relates to a method for operating a magnetic bearing.

An instrument for establishing orientation of a pelvic prosthesis comprises a hub, a first arm attached to and extending from the hub, and a second arm attached to and extending from the hub. The first and second arms define a nominal plane of the apparatus, and may extend from the hub at an angle relative to each other. Distances between the first and second legs and between the first and third legs are adjustable. The first, second, and third legs have tips, and the tips of the first, second, and third legs define a plane having a predefined geometric relationship to the nominal plane of the apparatus.

A flexible, elongated catheter tube having distal and proximal ends and a laser cut section there between. The laser cut section makes up a majority of the catheter length and is cut in a continuous helical pattern forming interlocking teeth which can be sinusoidal, triangular, square or likes shapes, preferably sinusoidal. The interior of the catheter tube has a polymeric bi-layer of a nylon or like polymer at the interface of the tube interior and a Teflon or like polymer forms the interior lumen of the catheter. The exterior of the tube has a thin polymer coating of nylon or the like. A short portion of the distal end is uncut and is followed by a narrower terminal section which can be tapered for better blockage penetration. The interlocking teeth disengage and reengage in a fish scale manner without undergoing plastic deformation and without substantial polymer separation.