Abstract: A stent (1) formed into a generally or substantially tubular body and expandable radially outward from inside of the tubular body, wherein cells (6) are connected vertically and so arranged as to surround the central axis (C1) of the stent (1) and thereby to form annular units (4), the annular units (4) are extended along the axis of the stent (1), adjacent annular units (4) are connected at least at one portion by a connecting part (5), each of the cells (6) has at least one bent portion, and the angle of the bent portion after expansion of the tubular body until the diameter becomes 2.5 mm is larger than 30°0. The stent ensures a high flexibility and radial support force, enhances the blood vessel expandability, and suppresses the foreshortening phenomenon and the flare phenomenon.

Abstract: This invention relates to methods for preparing articles having modified surfaces. Preferably the articles are medical devices. Preferably the surfaces are elastomeric. Preferably the articles having modified surfaces are useful for immobilizing biologically active agents on the surfaces.

Abstract: This invention relates to methods for preparing articles having modified surfaces. Preferably the articles are medical devices. Preferably the surfaces are elastomeric. Preferably the articles having modified surfaces are useful for immobilizing biologically active agents on the surfaces.

Abstract: A projector 3 is provided for casting light toward the inside of a spherical screen 2. A first reflecting mirror 4 is arranged inside the spherical screen 2 on the optical axis 15 of the projector 3, and a second reflecting mirror 5 of a convex mirror on the optical axis 15 is arranged adjacent to a body tube 16 of the projector 3. The light emitted from the projector 3 is cast onto the entire surface of the spherical screen 2 via the first and second reflecting mirrors 4, 5. Images with virtual presence can be projected onto the entire surface of the spherical screen by the simple structures using the single projector.

Abstract: The numbers of nodes forming each polygon and the spatial coordinates of these nodes are stored as polygon data in a data storage unit. On the basis of this stored data, a model drawing unit expresses a model. To deform the model by using an operating tool expressed by polygons, a node formation circuit forms new nodes near a contact node to repaste polygons, thereby expressing an incised portion.

Abstract: A method for modifying the surface of a polymer article, which comprises applying to the polymer article a macromer having a radical polymerizable double bond, followed by treatment with non-polymerizable plasma.

Abstract: An apparatus for separating a balloon from a catheter member of a balloon is capable of melting and breaking a heat-meltable connecting member through which the balloon is connected to the catheter body by causing an electric current to flow between at least a pair of electrodes arranged on or in the vicinity of the connecting member. The apparatus has impedance measuring means for measuring the impedance of an electrode circuit including a pair of electrodes and lead lines connected to the electrodes, and judging means for comparing the measured value of the impedance with a predetermined reference range and capable of producing an abnormal signal when the measured value of the impedance does not fall within the predetermined reference range.

Abstract: Elastomeric or flexible surgical adhesives, comprising [A] NCO-terminated hydrophilic urethane prepolymer derived from hydrophilic polyether polyol of higher oxyethylene content, or combination of [A] with [B] unsaturated cyano compound containing cyano group attached to a carbon atom constituting the polymerizable double bond, are used for bonding of tissues, with rapid cure rate and sufficient bonding power.

Abstract: A highly blood-compatible material comprising a polymeric base material and water-soluble and substantially nonionic polymer(s) directly attached to the surface of the base material in an amount of 1 to 100 .mu.g/cm.sup.2. The polymeric base material is preferably in the form of a web and composed of polyurethane, ethylene/vinyl acetate copolymer or polyvinylchloride. In addition, the attached polymers may be selected from the group consisting of acrylamide polymers, polyvinylpyrrolidone, polyvinyl alcohol, polyethylene glycol, and dextran. This material is particularly useful for preparing vascular prosthesis of small diameters.

Abstract: Elastomeric or flexible surgical adhesives, comprising [A] NCO-terminated hydrophilic urethane prepolymer derived from hydrophilic polyether polyol of higher oxyethylene content, or combination of [A] with [B] unsaturated cyano compound containing cyano group attached to a carbon atom constituting the polymerizable double bond, are used for bonding of tissues, with rapid cure rate and sufficient bonding power.

Abstract: Novel hydrophilic protein or polypeptide microspheres prepared by dispersing an aqueous solution or dispersion of protein or polypeptide in an organic solvent solution of a high molecular weight polymer to form a stabilized dispersion of microspheres and cross-linking said microspheres with a polyfunctional cross-linking agent.

Abstract: This invention provides a releasable balloon catheter having a portion cuttable by torsion or a portion cuttable by heating at or near a joint part between the catheter body and the balloon. When the balloon catheter is inserted into a vessel and carried to the desired site by the blood stream and the balloon is inflated by introducing a fluid into the balloon and is fixed at the desired site face-to-face with the wall of the vessel, torsion or heating causes the balloon to be released from the catheter body. The balloon catheter is used to embolize vascular lesions.

Abstract: This invention provides a releasable balloon catheter having a tube cuttable by torsion or a tube cuttable by heating at a joint part between the catheter body and the balloon. When the balloon catheter is inserted into a vessel and carried to the desired site by the blood stream and the balloon is inflated by introducing a fluid into the balloon and is fixed at the desired site face-to-face with the wall of the vessel, torsion or heating causes the balloon to be released from the catheter body. The balloon catheter is used to embolize vascular lesions.

Abstract: Disclosed is a balloon catheter including a catheter and a balloon bonded to the catheter through an adhesive in which the outer surface of the balloon is contiguous to the outer surface of the catheter through a smooth surface. In this balloon catheter, the balloon is tightly fixed to the catheter and there is no risk of separation of the balloon. Further, since the balloon catheter has a smooth surface in the connecting portion, insertion of the balloon catheter into a blood vessel and withdrawal of the balloon catheter from the blood vessel can be performed very easily and smoothly. Accordingly, this balloon catheter can be used very advantageously for the angiography.