Abstract: A circulation-accelerating light irradiation system capable of irradiating a focus part with light with such a wavelength as to show a high vasodilating action is provided. When a therapy start signal is inputted by the user or the like, a control unit 13 starts controlling a laser beam generation unit 12. The laser beam generation unit 12 generates laser beams 15 according to the control of the control unit 13. The laser beams 15 thus generated are transmitted through optical fibers 10, and are converted into parallel beams by collimator lenses 11. The laser beams 15 converted into the parallel beams are radiated onto a living body, and are concentrated onto a target part 51. The diseased part is treated with the energy of the concentrated laser beams 15.

Abstract: A platelet collecting apparatus 1 comprises a centrifugal separator 20 possessing a rotatable rotor 142; a first line 21 for allowing the flow of the blood entering the centrifugal separator 20; a second line 22 for allowing the flow of the blood emanating from the centrifugal separator, a plasma collecting bag 25 connected to the first line 21 and the second line 22 so as to collect the plasma emanating from the centrifugal separator 20 and return the collected plasma to the centrifugal separator 20, a platelet collecting bag 26 connected to the second line 22 so as to collect the platelets emanating from the centrifugal separator 20, a blood delivering pump 11 disposed in the first line 21, and a controller 13 for controlling the operation of the rotor of the centrifugal separator 20 and the operation of the blood delivering pump 11.

Abstract: A platelet collecting apparatus 1 comprises a centrifugal separator 20 possessing a rotatable rotor 142; a first line 21 for allowing the flow of the blood entering the centrifugal separator 20; a second line 22 for allowing the flow of the blood emanating from the centrifugal separator, a plasma collecting bag 25 connected to the first line 21 and the second line 22 so as to collect the plasma emanating from the centrifugal separator 20 and return the collected plasma to the centrifugal separator 20, a platelet collecting bag 26 connected to the second line 22 so as to collect the platelets emanating from the centrifugal separator 20, a blood delivering pump 11 disposed in the first line 21, and a controller 13 for controlling the operation of the rotor of the centrifugal separator 20 and the operation of the blood delivering pump 11.

Abstract: A curable liquid resin composition containing 100 parts by weight of the following (meth)acrylic liquid resin (A) and 1 to 1,000 parts by weight of a (meth)acrylic monomer (B) having an unsaturated double bond in its molecule and having a number average molecular weight of 1,000 or less, the (meth)acrylic liquid resin (A) being a liquid resin which is obtained by polymerizing monomers containing an alkyl (meth)acrylate monomer (a-1-1) of the formula (1),CH.sub.2 C(R.sup.1)COO--R.sup.2 (1)wherein R.sup.1 is a hydrogen atom or CH.sub.3 and R.sup.2 is an alkyl group,and/or an alkylene glycol (meth)acrylate monomer (a-1-2) of the formula (2) ,CH.sub.2 .dbd.C(R.sup.1)COO(C.sub.n H.sub.2n O).sub.m R.sup.3(2)wherein R.sup.1 is a hydrogen atom or CH.sub.3, R.sup.

Abstract: A liquid resin having a number average molecular weight of 10,000 to 200,000 and a viscosity, measured at 50.degree. C., of 500 to 30,000 cps, obtained by the copolymerization of a composition containing(a) 35 to 98% by weight of a monomer of the formula,CH.sub.2 =C(R.sup.1)COOR.sup.2wherein R.sup.1 is hydrogen or methyl and R.sup.2 is a hydrocarbon group having 4 to 22 carbon atoms,(b) 2 to 40% by weight of a polymerizable unsaturated carboxylic acid, and(c) 0 to 60% by weight of other polymerizable vinyl monomer.

Abstract: A liquid polyester obtained by reacting a cyclic acid anhydride (A) containing at least 10 mol % of one of specific cyclic acid anhydrides with an epoxy compound (B) in a cyclic acid anhydride (A):epoxy compound (B) molar ratio of 10:8-10:12, can be applied with a conventionally generally used film-forming machine such as a roll coater or a printing machine, can easily give a film-forming material such as a solvent-free coating composition or ink and a curable liquid resin for use as an adhesive, is a low-temperature curing liquid polyester useful as a compatibilizer, a surface-tension modifier, a pigment dispersing agent and a metal chelating agent, and is curable in air in the presence of a relatively small amount of a catalyst.

Abstract: A liquid resin having a number average molecular weight of 10,000 to 200,000 and a viscosity, measured at 50.degree. C., of 500 to 30,000 cps, obtained by the copolymerization of a composition containing(a) 35 to 98% by weight of a monomer of the formula,CH.sub.2 .dbd.C(R.sup.1)COOR.sup.2wherein R.sup.1 is a hydrogen or methyl and R.sup.2 is a hydrocarbon group having 4 to 22 carbon atoms,(b) 2 to 40% by weight of a polymerizable unsaturated carboxylic acid, and(c) 0 to 60% by weight of other polymerizable vinyl monomer.

Abstract: Disclosed is a blood pump apparatus for blood components, comprising a housing forming a substantially cylindrical liquid chamber, an inlet port formed at an upper central portion of the housing and communicating with a source of blood component and the chamber, an outlet port formed in a peripheral portion of the housing and communicating with the chamber, a rotator arranged in the chamber and having an upper cover and a lower shroud, a lower surface of the upper cover being inclined such that an angle .theta.

Abstract: A roller pump is provided with a driving mechanism; a rotating shaft rotatably driven by the driving mechanism; a pump head that includes a sleeve which is unrotatably arranged in the outer periphery of the rotating shaft, and through which the rotating shaft is inserted, and a cylindrical stator fixed outwardly and radially to the sleeve and coaxially with the same; a tube for fluid transfer supported on the inner peripheral surface of the stator; a rotor rotatably fitted with the outer periphery of the sleeve of the pump head and including at least one rotatable roller opposite to the stator; the tube being clamped between the roller and the stator; and transmitting mechanism for transmitting rotation force for the rotating shaft to the rotor.

Abstract: A switchable magnetic chuck has a magnet assembly slidably arranged in a casing to magnetize and demagnetize a top plate disposed in an open side of the casing. The top plate is provided with main pole members and auxiliary pole members which are arranged alternatively in the sliding direction of the magnet assembly, separated respectively by a non-magnetic separator disposed between them. To smoothen the change-over operation, enhance magnetic force under the magnetized condition and reduce residual attraction under the demagnetized condition, each main pole member is formed on the side facing the magnet assembly with an extension extending between the auxiliary pole member adjacent thereto and the magnet assembly.

Abstract: A magnet assembly used as a magnetism generating source for attaching an article to a magnetic substance or for magnetically retaining a magnetic member. The magnet assembly consists of a cylindrical casing open at least at one end, a core disposed within the casing at a spacing from an inner wall thereof, with one end of the core aligned with the open end face of the casing, and a permanent magnet disposed between the core and the inner peripheral surface of the casing. The permanent magnet has one magnetic pole on an outer surface thereof opposing the inner peripheral surface of the casing, and the other magnetic pole opposite the magnetic pole on an inner surface thereof opposing the outer peripheral surface of the core, so that the open end face of the casing and the end face of the core serve as a magnetic attraction surface.

Abstract: A switchable permanent magnet holding device in which a permanent magnet rotatably disposed within a bore in a magnetic circuit block is rotated, so that the magnetism acting surfaces of the magnetic circuit block are brought into an exciting state for retaining a magnetic substance thereon and into a non-exciting state for releasing the magnetic substance therefrom. The permanent magnet is pressed against a stopper for impeding rotation thereof, due to a gyromagnetic force acting across the permanent magnet and the magnetic circuit block when the permanent magnet is rotated to a position in which the magnetism acting surfaces of the block become exciting.

Abstract: A magnetic base adapted to be secured to a magnetic substance attractively, wherein a permanent magnet 20 having a small reversible permeability .mu. is employed as a rotary magnet housed in a magnetic block 18 and rotated for switching magnetic active surfaces 24 of the block from an unexcited state to an excited state, thereby effecting a light and smooth rotation.