摘要:
A balloon catheter includes a long-sized body extending between a proximal end and a distal end, the body internally having at least one lumen, and a balloon made from a composite material composed of short-fibers for reienforcement and a matrix resin, the balloon being disposed on the distal side of the long-sized body. The short-fibers are oriented in the balloon in such a manner that in a longitudinal cross-section of the balloon, 25% or more of the short-fibers are oriented in the major-axis direction of the balloon, 25% or more of the short-fibers are oriented in the direction oblique to the major-axis direction, and the remaining short-fibers are oriented in the direction nearly perpendicular to the major-axis direction; and in a diametrical cross-section of the balloon, 8% or more of the short-fibers are oriented in the circumferential direction of the balloon, 25% or more of the short-fibers are oriented in the direction perpendicular to the circumferential direction, that is, in the major-axis direction, and the remaining short-fibers are oriented in the direction oblique to the circumferential direction. The balloon catheter exhibits a high strength to withstand pressure and a good trackability.
摘要:
Disclosed herein is a method for alleviating the condition of spinal canal stenosis, including: transluminally placing a catheter in a lumbar artery, iliolumbar artery or lateral sacral artery at the proximity of a narrowed area of a spinal canal; and injecting a vasodilator into the artery via the catheter.
摘要:
A guide wire includes a wire having an elongated body section and a distal portion decreasing in outer diameter from the body section. The guide wire may have a resin coating portion coating the body section and the distal portion and having a smooth outer surface; and a visually discernible mark provided at the resin coating portion. The body section may have a flexible portion which constitutes a part of the body section and lower in flexural rigidity than other portions of the body section different from the part, and the visually discernible mark is provided at a position of the resin coating portion at which the flexible portion is coated with the resin coating portion
摘要:
A semiconductor integrated circuit comprising a power supply wiring and a ground wiring and a decoupling capacitor formed between the power supply wiring and the ground wiring, wherein at least one electrode of the decoupling capacitor consists of a shield layer formed in a plane shape on a semiconductor substrate, and the shield layer is electrically connected directly to the semiconductor substrate and is fixed to a power supply potential or the ground potential.
摘要:
There is provided an LSI socket containing a pogo-pin type decoupling capacitor for reducing the potential fluctuation of power supplies and GNDs at the time of testing LSI incorporated in a BGA package. The LSI socket comprises a printed board 102 containing decoupling capacitors 113 corresponding to one or more power supply voltages inside thereof, a pogo-pin supporting casing portion 104 on which the printed board 102 is overlapped into a single piece, and pogo-pins 103 inserted into penetrating holes in which hole positions of through holes 109 drilled in the printed board 102 and casing holes 114 drilled in the pogo-pin supporting casing portion 104 are allowed to be matched, wherein the printed board 102 is disposed on the upper surface side of the pogo-pin supporting casing portion 104 which faces the BGA package, or disposed on the lower surface side of the pogo-pin supporting casing portion 104, at the time of testing the LSI incorporated in the BGA package.
摘要:
When initially routing a continuous web along a path, the web walks across the width of the path, and uneven tension occurs causing the web to break in some cases when printing tension is applied thereto. Further, uneven web tension is produced on the right and left of the web by excessive walk control resulting from an excessive deviation of the web from the target position of a walk controller, with the result that the web is crumpled and broken. These problems are solved by maintaining a web tension that is lower than the printing tension until the web position converges on the target position of the walk controller after loading of the web, thereby reducing the amount of correction by the walk controller and the amount of web lost in the preparatory phase before printing, with the result that excellent image quality free from crumple or breakdown is ensured.
摘要:
A semiconductor device with a bipolar transistor that enables to realize a reliable, electric connection of an intrinsic base region with a base electrode is provided. A semiconductor substructure has a surface area. An intrinsic base region is formed in the surface area. An emitter region is formed in the surface area to be surounded by the intrinsic base region, and an emitter electrode is formed to be contacted with the emitter region. An insulator is formed to surround the emitter electrode. A base electrode is formed not to be contacted with the intrinsic base region A conductive region is formed to be contacted with the intrinsic base region and the base electrode. The substructure has a recess formed on the surface area. The conductive region is produced by supplying a conductive material to the recess to be contacted with the intrinsic base region and the base electrode. The intrinsic base region is electrically connected to the base electrode through the conductive region. The recess is preferably produced by oxidizing a part of the surface area to form an oxide and removing the oxide.
摘要:
An n type buried layer (2b) lying in the lower part of a PNP transistor (101a) is lower in impurity concentration than an n.sup.+ type buried layer (2a) lying in the lower part of an NPN transistor (100). A p.sup.+ type buried layer (4a) is formed thick on the n type buried layer (2b) and insulated from the n.sup.+ type buried layer (2a) by an isolation trench (7). A breakdown voltage at a junction of the p.sup.+ type buried layer (4a) and the n type buried layer (2b) can be improved and, accordingly, the breakdown voltage of the whole device being improved. Low-controlled collector resistance of the PNP transistor (101a) prevents an amplification factor from decreasing.
摘要:
Conductive layers (5a, 9a) included in a multi-layer structure (30a) are electrically interconnected through a conductive connection wall (13a) provided in a contact hole (12) and contacting the side surface (22) of the multi-layer structure (30a). The upper conductive layer (11a) existing on the multi-layer structure (30a) and the lower conductive layer (3) exisitng under the multi-layer structure (30a) are electrically interconnected through a conductive film (11b) provided in the contact hole (12). These two interconnections are insulated from each other by an insulating film (18) provided on the connection wall (13a).
摘要:
A medical instrument to be inserted into a living body before being used. The medical instrument is provided with a medical instrument main body including a long linear body having flexibility on which a coating layer covering at least the outer periphery on the distal side thereof is formed. The coating layer composes of a first layer which includes a material containing a low-friction resin material capable of lowering friction and a binder resin material serving as a binder; a second layer which is formed on the first layer and includes a material containing a low-friction resin material and a pigment and in which the content of a binder resin material is lower than the binder resin material content of the first layer or nil; and a third layer which is formed on the second layer and includes a material containing a low-friction resin material.