Abstract: A guide wire introduction device for positioning at least one guide wire around a heart valve. The device includes a first catheter provided with a distal deflection system, a second catheter inserted inside the first catheter, at least one lumen capable of causing a guide wire to slide therein and provided with a distal deflection system for deflecting the end thereof through an angle greater than 90°, and a third catheter inserted inside the first catheter. The third catheter has a guide wire capturing device therein and is provided with a distal deflection system.

Abstract: A device for implanting a heart prosthesis including a central body, a containment portion having one or more sub-components, and a release device for the central body capable of being inserted into a catheter. A device for assisting the connection operation between the central body and the sub-components of the containment portion includes an assembly of catheters, of which there are at least two catheters for each sub-component of the containment portion, the catheters being joined to each other over a portion thereof and having at least one free end for each catheter.

Abstract: A valve assembly for instruments and/or guide wires for use as access/tool port includes a cannula attached to a valve housing with a through hole. Elastic valve members are housed in the valve housing for sealing the through hole either when no device is inserted, or when a specific device with a compatible cross section is inserted. A further sealing arrangement is housed in the valve housing. The further sealing arrangement is extendable within the valve housing to selectively reduce the width of the through hole from a non-sealed configuration where one generic device or a group of generic devices, not necessarily having the same size and/or shape, can be inserted into and/or removed from the through hole, to a sealed configuration where the sealing arrangement seals the through hole with the generic device or the group of generic devices inserted into the through hole.

Abstract: A device for implanting a heart prosthesis including a central body, a containment portion having one or more sub-components, and a release device for the central body capable of being inserted into a catheter. A device for assisting the connection operation between the central body and the sub-components of the containment portion includes an assembly of catheters, of which there are at least two catheters for each sub-component of the containment portion, the catheters being joined to each other over a portion thereof and having at least one free end for each catheter.

Abstract: A valve assembly for instruments and/or guide wires for use as access/tool port includes a cannula attached to a valve housing with a through hole. Elastic valve members are housed in the valve housing for sealing the through hole either when no device is inserted, or when a specific device with a compatible cross section is inserted. A further sealing arrangement is housed in the valve housing. The further sealing arrangement is extendable within the valve housing to selectively reduce the width of the through hole from a non-sealed configuration where one generic device or a group of generic devices, not necessarily having the same size and/or shape, can be inserted into and/or removed from the through hole, to a sealed configuration where the sealing arrangement seals the through hole with the generic device or the group of generic devices inserted into the through hole.

Abstract: Provided is super duplex stainless steel having excellent yield strength and impact toughness, wherein a reduction ratio and a heat treatment temperature are controlled so as to improve mechanical properties. The super duplex stainless steel having excellent yield strength and impact toughness is thick super duplex stainless steel having a thickness of 30 mm or greater, and includes, in weight %, Cr: 24% to 26%, Ni: 6.0% to 8.0%, Mo: 3.5% to 5.0%, N: 0.24% to 0.32%, and the remainder being Fe and inevitable impurities, wherein a microstructure includes a ferrite phase, an austenite phase and a secondary austenite phase, and grain size is 25 ?m or less.

Abstract: A system for detection of blood pressure in a blood vessel includes a guide wire and a LC resonance circuit provided at a distal end of the guide wire. The resonance circuit may be a non-LC resonance circuit responsive to changes in pressure of fluid external to the guide wire such that the resonance circuit has a resonance frequency that varies in accordance with changes in pressure of the external fluid.

Abstract: A percutaneously-insertable catheter (10) for administering an active agent to a body site, the catheter comprising: a distal portion (22) expandable from a contracted condition of introduction to a deployed administering condition, to stabilize the distal end (2) of the catheter (10) at the body site of administration, and—a flexible tubular element (16) coupled to said distal end (2) of the catheter (10) for receiving the active agent and administering it to the body. The flexible element (16) comprises an outer tubular element (161) and an inner tubular element (167) inserted into the outer tubular element (161), with one (161) of the outer tubular element (161) and the inner tubular element (167) provided with notches (163) which enable its spinal column-like curvature towards the body site of administration.

Abstract: A semiconductor light emitting device includes first conductivity type and second conductivity type semiconductor layers, an active layer disposed between the semiconductor layers and having a structure in which one or more quantum well layers and one or more quantum barrier layers are alternately disposed An electron blocking layer is disposed between the active layer and the second conductivity type semiconductor layer. A capping layer is disposed between the active layer and the electron blocking layer and blocking a dopant element from being injected into the active layer from the second conductivity type semiconductor layer.

Abstract: An instrument for positioning a cardiac valve prosthesis in a vessel includes a wire element to slidingly guide the valve prosthesis towards an implantation site and an expandable element coupled to the wire element. The expandable element is expandable in the vessel to position the wire element in association with the implantation site. A method for positioning a cardiac valve prosthesis includes securing a delivery instrument at an appropriate location at the implantation site and delivering the valve prosthesis to the implantation site using the delivery instrument.

Abstract: Provided is a white LED including a reflector cup; an LED chip mounted on the bottom surface of the reflector cup; transparent resin surrounding the LED chip; a phosphor layer formed on the transparent resin; and a light transmitting layer that is inserted into the surface of the phosphor layer so as to form an embossing pattern on the surface, the light transmitting layer transmitting light, incident from the phosphor layer, in the upward direction.

Abstract: An ablation device, including a catheter and an ablation element incorporating one or more balloons at the distal end of the catheter, has a continuous passageway extending through it from the proximal end of the catheter to the distal side of the expandable ablation element. The ablation device ablates tissue by subjecting it to ultrasound energy, cryogenic energy, chemical, laser beam, microwave, or radiation energy. A probe carrying electrodes is introduced through this passageway and deploys, under the influence of its own resilience, to a structure incorporating a loop which is automatically aligned with the axis of the expandable ablation device, so that minimal manipulation is required to place the probe. Pulmonary vein potential is monitored in real time via the electrodes. The probe may have an atraumatic tip with a ball formed at the leading edge. The atraumatic tip prevents any tissue damage such as perforation of heart wall.

Abstract: Provided is a nitride semiconductor light emitting device including p-type nitride semiconductor layer, an n-type nitride semiconductor layer, and an active layer formed therebetween. A contact layer is positioned between the p-type nitride semiconductor layer and a p-side electrode. The contact layer includes a first p-type nitride layer having a first impurity concentration to form ohmic contact with the p-side electrode and a second p-type nitride layer having a second impurity concentration, the second impurity concentration having a concentration lower than the first impurity concentration.

Abstract: Provided is a white LED including a reflector cup; an LED chip mounted on the bottom surface of the reflector cup; transparent resin surrounding the LED chip; a phosphor layer formed on the transparent resin; and a light transmitting layer that is inserted into the surface of the phosphor layer so as to form an embossing pattern on the surface, the light transmitting layer transmitting light, incident from the phosphor layer, in the upward direction.

Abstract: Disclosed herein is a laser navigation module, including: a light source radiating a laser beam; a housing provided with a window transmitting and reflecting the laser beam radiated from the light source and shielding the introduction of visible rays and provided with a transparent part or a translucent part to radiate light radiated from the inside thereof to the outside; a lighting device mounted in the housing; and a light diffusing member transferring the light radiated from the lighting device and having a groove part formed at an edge of an opposite side of the lighting device.

Abstract: There is provided an imaging lens including: a transparent substrate; an upper lens disposed on a top of the transparent substrate; and a lower lens disposed on a bottom of the transparent substrate to correspond to the upper lens, wherein one of the upper and lower lenses includes a lens element and a partition wall formed higher than the lens element to surround the lens element. Also, there is provided a method of manufacturing the same. In the imaging lens, the partition wall is replicated together with the lens element on one or both surfaces of the transparent substrate. The partition wall is formed higher than the lens element and has a flat top surface. Therefore, when another lens element is replicated on an opposite surface of the transparent substrate, the previously replicated lens element is prevented from deformation.

Abstract: Disclosed herein is a laser navigation module. The laser navigation module includes a light source emitting laser light. An IR window allows the laser light emitted by the light source to pass therethrough and be reflected thereon, and prevents the entry of visible light. A housing is equipped with the IR window and includes a transparent or semi-transparent part. An illuminator is provided in the housing to emit light to the outside of the housing. The laser navigation module further includes an opaque part or a blocking layer for selective blocking, thus enabling light to be emitted to a desired area of the housing, therefore making it convenient to use even in a dark place.

Abstract: A cardiac ablation device, including a catheter and an expandable ablation element incorporating one or more balloons at the distal end of the catheter, has a continuous passageway extending through it from the proximal end of the catheter to the distal side of the expandable ablation element. A probe carrying electrodes is introduced through this passageway and deploys, under the influence of its own resilience, to a structure incorporating a loop which is automatically aligned with the axis of the expandable ablation device, so that minimal manipulation is required to place the probe. The probe may have an atraumatic tip with a ball formed at the leading edge. The atraumatic tip prevents any tissue damage such as perforation of heart wall.

Abstract: A distance measuring apparatus according to an aspect of the invention may include: a light source irradiating reference light to measure a distance; a lower reflective mirror reflecting the reference light to irradiate the reference light onto a peripheral obstacle, and reflecting reflected light, rebounded from an obstacle, so that the reflected light moves in an opposite direction along the same optical path as the reference light; a sensor lens arranged above the lower reflective mirror, converting the reference light into parallel light beams and focusing the reflected light; an upper reflective mirror arranged above the sensor lens and switching an optical path of the reflected light; and an optical sensor receiving the reflected light having the optical path thereof switched by the upper reflective mirror, wherein the upper reflective mirror reflects back the reflected light, focused after passing through the sensor lens, in an opposite direction to a moving direction thereof so that a focus of the ref

Abstract: An instrument for positioning a cardiac valve prosthesis in a vessel includes a wire element to slidingly guide the valve prosthesis towards an implantation site and an expandable element coupled to the wire element. The expandable element is expandable in the vessel to position the wire element in association with the implantation site. A method for positioning a cardiac valve prosthesis includes securing a delivery instrument at an appropriate location at the implantation site and delivering the valve prosthesis to the implantation site using the delivery instrument.