PURPOSE:To obtain the best speed change characteristic at all times by providing a means for deciding the trail of an objective rotational speed to be trailed by the member whose rotational speed changes with the speed change operation and controlling the engagement transient hydraulic pressure of a friction engagement device so that the rotational speed may be changed along this trail. CONSTITUTI...

An abrasive tipped rotating cutting tool for use in removing abnormal deposits within a patient's vessels is described. The tip (12) is preferably covered with a material such as diamond grit (14), and rotated at high speed to pulverize any abnormal deposits contained within the vessel. In a preferred embodiment of the invention, the tip is ellipsoidal in shape, and the coarseness of the abrasive ...

The present invention is a clinically practical, rotational angioplasty system which employs a unique rotary ablative device (10) for mechanically abrading, and thereby removing, lesions from within a patient's vessels. The device (10), called a "Rotablator" by its inventors, has a gas driven prime mover (172) with an integrated water pump and fiberoptic tachometer. The prime mover (172) is connec...

An optical control unit comprises a base and at least one optical assembly having optical emitting means and conjugate optical receiving means with preset and fixed focal distances, the optical emitting means and conjugate optical receiving means being associated with the base so as to have fixed orientations with respect to the base and be capable of movement in directions parallel and transverse...

A method of screen printing a hard non-absorbent substrate, such as glass, using a screen with a patterned coating on its surface facing the substrate comprises providing local support between the screen surface and the substrate in one or more areas in which a patterned ink layer of increased thickness is required, thereby enhancing ink retention in the said areas. The method is especially useful...

This device enables extraction of metal salt crystals from acids. While the liquid is coding, crystals form at the bottom of the container. The suspension is drawn from the liq. by a vacuum pump and left to drain after which the crystals are swept into a container.

Contaminated water is contacted with an agent which contains salts or cations of mono-, di-, or trivalent metals in a maximum amount of 50 masspercent and rock granules containing at least 25 masspercent zeolite, preferably clinoptilolite and/or mordenite. The amount of metal salts respectively cations present in the parent zeolitic rock can be increased according to necessity by ion-exchange, ads...

A prosthesis is made by applying coating amterial to at east part of a porous surface region of a base member in which bone attachment is desired while introducing energy sufficient to convert the material to a state in which it is bioabsorbable, pref. by heating to more than 1350 deg.. The material may be plasma sprayed, sputtered or electrostatically sprayed. The material pref. contains hydrox...

For rendering the centripetal type of moulds to be easily mountable and dismountable, from a corresponding vulcanizing press, by utilizing automatic devices, the matrix (3) of the sectors (4) are blocked on the corresponding supports, by a bayonet type of device (10) mounted on the support, that is shifted from its blocked position, to a non-interference position with the matrix, by simply rotatin...

A device for cryoprecipitation of blood plasma comprises a plasma separator (1) connected to a dialysis filter (6) via a container (5). A recirculation tube (8) returns plasma to the container (5) via a cooler (9) for recirculation. Filtered plasma is returned via a heater (11) to the outlet of the separator (1) where it is mixed with blood cells for return to the patient.

A method for removing immunoglobulin-G and immune complexes from blood comprises withdrawing a small, discrete volume of blood from a patient, separating the blood volume into its cellular and plasma components, immediately reinfusing the cellular components to the patient, passing the plasma components through a protein A immunoadsorbent, and reinfusing the treated plasma to the patient. By treat...

A first line of cellular defense against many viruses, including those causing AIDS, is activation of an intracellular biochemical system termed the 2'-5' oligoadenylate/RNase L pathway. It is well known that this pathway malfunctions in individuals with progressive AIDs-related immune dysfunction, but the mechanism of malfunction remained obscure. An inhibitor substance, released in HIV infected ...

Ester derivatives of 5-O-mycaminosyl tylonolide (OMT) of the formula wherein R and R1 are selected from hydrogen, optionally substituted C1-C5-alkanoyl or optionally substituted benzoyl, phenylacetyl, or phenylpropionyl; R2 is hydrogen or an acyl group selected from: +TR p is 0 or 1; m and n are integers from 0 to 4; R3 is hydrogen, halo, C1-C4-alkyl, C3-C8-cycloalkyl, ...