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Separex S.a.

Separex Teknik Ab

Separek Teknik Ab

Johan E Westberg

Hans P Unger

A device for making skin incisions for bleeding time determinations in accordance with Ivy's method has a cutter guide on which an incising cutter is movable from a retracted position to an advanced position under the action of spring bias. A base surface adapted to be pressed against the patient's skin has a depression of a length corresponding to the desired length of the skin incision. A slot in the base surface extends across the depression and accommodates the tip of the cutter. When the cutter is released from the retracted position the spring bias displaces it along the slot and as it traverses the depression it makes a skin incision of predetermined constant depth.

Skin incising device

A centrifuge rotor for use in the continuous separation of a liquid into fractions has a recess for receiving a flow-through separation container. The recess has interrupted annular shape with inclined side-walls. The inclination of the sidewalls and the cross-sectional area of the recess increase continuously in the circumferential direction from one end of the recess to the other. A collapsible flow-through separation container having flexible inlet and outlet tubes is adapted to fit within the rotor recess. Its cross-sectional area increases continuously from the inlet end to the outlet end.

Centrifuge rotor and collapsible separation container for use therewith

In an apparatus for mixing in given proportions two media, such as gases or liquids, the pressure of each said media is reduced to a working pressure by a respective regulator. The media from the regulators pass through a mixing means to a common mixing chamber through two gaps each of which is individual to a respective medium. The relationship between the length of the two gaps can be adjusted by means operative to control the proportions of the media in said mixture and the regulators are arranged to be controlled in a manner such that the pressures of the media before the gaps are held mutually equal.

Apparatus for mixing media, such as gases or liquids

An apparatus for continuously transmitting electrical energy or a fluid stream between a fixed terminal and a continuously rotating terminal through a flexible continuous transmission element, such as an electric cable or a tube, comprises three rotors having a common axis of rotation, namely an outer rotor, an intermediate rotor and an inner rotor. The outer and intermediate rotors are rotated at approximately equal speeds in opposite directions, and the inner rotor is driven by the torsionally rigid, filiform transmission element in the same direction as the intermediate rotor at a speed equal to twice the sum of the speeds of the outer and intermediate rotors. The transmission element extends between the fixed and rotating terminals in an outer bight supported by the outer rotor and an inner bight supported by the intermediate rotor and is rotatable about its own curvilinear axis relative to the rotors. The bights are shaped like a fishhook or an interrogation mark so that the ends of each bight point in the same direction. A centrifugal separation unit adapted for use with the apparatus comprises a separation container supported by the inner rotor, a bundle of flexible tubes connected to the separation container, and a torque-transmitting sheathing wrapped around the bundle of tubes.

Apparatus for accomplishing unlimited relative rotation of the ends of a

An arrangement for perforation a stripe of a ductile material such as plastics or a ductile metal such as aluminum or copper and for forming a lattice of the stripe comprises a preferably rotating cutting roll, which cooperates with a holding-up tool. The cutting roll has at least one axially aligned row of cutting plates. Each cutting plate has a cutting edge and a partly cylindrical part, which forms a part of the cylindrical mantle surface of the cutting roll. In cooperation with the holding-up tool the cutting edges of the cutting plates make a row of slots in the stripe, whereupon the walls of the slots are extended in the longitudinal direction of the stripe, while the partly cylindrical parts of the cutting plates hold other parts of the stripe against the holding-up tool so as to form a lattice without changing the width of the stripe.

Arrangement for perforating a stripe

A centrifuge apparatus, primarily for use in the continuous or semi-continuous separation of blood, has a disposable separation unit which is orbited on a centrifuge rotor. The separation unit has a sealed jacket which is held against rotation during the orbiting and communicates with a stationary and nonrotatable liquid inlet and outlet connector on the rotor axis. A separation vessel rotatably mounted in the jacket communicates with liquid inlet and outlet passages in the jacket and is rotationally unbalanced to orient itself relative to the rotor during the orbiting of the jacket.

Growing community of inventors

Lidingo, Sweden

Johan E Westberg