摘要:
An intravascular diagnostic or therapeutic apparatus capable of removing blood in an intravascular lumen to be observed using a minimally invasive method is provided. The apparatus includes high-intensity pulsed light generating means and high-intensity pulsed light transmitting means for transmitting high-intensity pulsed light, capable of irradiating the interior of a blood vessel with high-intensity pulsed light, producing water-vapor bubbles and temporarily removing the blood in the blood vessel.
摘要:
An intravascular diagnostic or therapeutic apparatus capable of removing blood in an intravascular lumen to be observed using a minimally invasive method is provided. The apparatus includes high-intensity pulsed light generating means and high-intensity pulsed light transmitting means for transmitting high-intensity pulsed light, capable of irradiating the interior of a blood vessel with high-intensity pulsed light, producing water-vapor bubbles and temporarily removing the blood in the blood vessel.
摘要:
A thin tube is provided that is inserted into a lumen of a living body so as to be used, which can detect the flexed direction of the forward end of itself with the use of a sensor disposed at such forward end upon light irradiation. The forward end of the thin tube is allowed to be flexed to a desired direction with the use of an actuator disposed at such forward end. Such thin tube for medical use is inserted into the lumen of a living body so as to be used for internal observation or internal treatment and contains a device for sensing light irradiation and/or an actuator that is operated via light irradiation at its forward end and a light transmission means, such light transmission means being used for irradiating the device and/or the actuator with light and such device or actuator functioning for monitoring and/or controlling the degree of flection of the forward end of such thin tube, is provided.
摘要:
A balloon catheter of novel configuration, which is capable of both efficiently heating a heating element by using a laser light and of ensuring durability by avoiding the laser light directly heating members other than the heating element. Provided is a balloon catheter with a balloon disposed in a distal end section of a shaft and wherein: a tightly wound coil shaped heating element is housed and arranged in the balloon; an optical fiber that irradiates a laser light inside the heating element is disposed; and a supply path that supplies a fluid to inside the balloon through an inside of the heating element and a discharge path that discharges the fluid from inside the balloon through a discharge port positioned on an outside of the heating element are disposed.
摘要:
To provide a device and method for closing a sheath removal hole formed for introducing a vessel catheter by laser welding when diagnosis or treatment inside a blood vessel is performed by means of the catheter. The device for closing the sheath removal hole formed in the wall of the blood vessel by laser welding, comprising welding laser generating means, means for transmitting the welding laser, and means for monitoring the position of an end of the welding laser transmitting means, wherein the welding laser is radiated when the end of the welding laser transmitting means is located in the vessel wall.
摘要:
A balloon catheter of novel configuration, which is capable of both efficiently heating a heating element by using a laser light and of ensuring durability by avoiding the laser light directly heating members other than the heating element. Provided is a balloon catheter with a balloon disposed in a distal end section of a shaft and wherein: a tightly wound coil shaped heating element is housed and arranged in the balloon; an optical fiber that irradiates a laser light inside the heating element is disposed; and a supply path that supplies a fluid to inside the balloon through an inside of the heating element and a discharge path that discharges the fluid from inside the balloon through a discharge port positioned on an outside of the heating element are disposed.
摘要:
To provide a laser therapy apparatus that is capable of determining a contact state between a tip portion of a laser catheter and a tissue, which includes a buried state of the tip portion in the tissue, a laser therapy system, and a determination method.
摘要:
The invention provides PDT equipment which can absolutely treat the deep lesioned part with preserving the superficial membrane of the healthy region. Photodynamic therapy equipment 1 for treating lesioned part by using a photosensitive substance, which is activated by the light having a peak intensity of a predetermined range but is almost not activated by the light having the peak intensity out of the predetermined range, equipped with an irradiation means 13 irradiating into the body a pulsed light of the wavelength having the potential for activating the photosensitive substance, and a control means 22 controlling the peak intensity of the light irradiated by the irradiation means, and the control means 22 allows the irradiation means 13 to irradiate the light having the high peak intensity in order that the light arriving at the deep-lying lesioned part 41 is to achieve the peak intensity of the predetermined range.
摘要:
A fluororesin tube body (10) of an endoscope flexible tube (1) is small in diameter and thin in wall thickness to such a degree that it is difficult to maintain its cross-sectional shape by itself when the flexible tube (1) is bent to the limit. A braid (20) woven from a plurality of flat bands (21) to form a tubular shape is disposed around the tube body (10). The mesh openings of the braid (20) are filled with filling adhesive (30), which bonds the tube body (10) and the braid (20) together. The filling adhesive (30) has enough elasticity to allow deformation of the braid (20) during the bending operation and enough adhesive strength to maintain the bond between the tube body (10) and the braid (20) even when the filling adhesive (30) is elastically deformed. Consequently, the braid (20) restricts the cross-sectional deformation of the tube body (10). Thus, the limit curvature of the flexible tube (1) can be increased.
摘要:
A photodynamic therapy apparatus as an estimating apparatus is an apparatus for irradiating a tissue having absorbed photo-sensitive pharmaceutical, the photo-sensitive pharmaceutical absorbing an excitation light and emitting fluorescence, with the excitation light emitted from a tip portion of a laser catheter, including a connector, a light source, and a light detection unit. The laser catheter is capable of being attached to and detached from the connector. The light source outputs the excitation light to the laser catheter via the connector. The light detection unit detects intensity or a spectrum of the fluorescence, the fluorescence being entered from the laser catheter via the connector, to estimate whether the tissue has changed because of reaction between the excitation light emitted from the tip portion of the laser catheter and the photo-sensitive pharmaceutical absorbed in the tissue.