Abstract: Self-venting balloon dilatation catheter having an elongate flexible tubular member having at least one lumen therein extending longitudinally thereof. A balloon is carried by the flexible tubular member and is in communication with the lumen. A fitting is carried by the tubular member for inflating the balloon with a balloon inflating medium. A plurality of small passages are formed which permit air to escape from the interior of the balloon but inhibit the passage of the balloon inflation medium from the balloon.

Abstract: Apparatus for the treatment of a cancerous lesion part by irradiating a light energy from a light source to the cancerous lesion part having absorbed and accumulated in advance therein a photosensitive substance with an affinity for tumors, in which said light source comprises a first photodiode adapted to excite the photosensitive substance from the ground state thereof to a singlet state of higher energy level and a second photodiode adapted to exite an energy level of the photosensitive substance which has transited from the singlet state to a triplet state to a still higher energy level.

Abstract: A transfusion apparatus including a pump section for sequentially pressing and blocking a transfusion tube to feed a liquid, a detecting section for detecting a given cycle of pump operation in the pump section, and a drive-control for driving and controlling the pump section is disclosed, in which the transfusion tube on an upstream side above the pump section is provided with a dropping cylinder on which is arranged a detector for counting the number of droplets and that the apparatus is further provided with a comparator for comparing the number of droplets in the given cycle of the pump operation with a predetermined value to judge a type of a transfusion set.

Abstract: Apparatus and method for measuring the volume of a drop, and with a series of drops the volumetric flow rate of a fluid utilizing a vertically oriented, transparent drop chamber through which the fluid is directed in drop form. A plurality of drop sensors positioned adjacent to the drop chamber in vertically spaced relation to each other emit signals in response to the detection of the entrance and exit of each drop to and from separate sensor fields preferably established by light emitting sources. The drop sensors are connected to control circuitry incorporating an electronic processor programmed to determine volumetric flow rate in response to drop dimension and drop rate signals received from the drop sensors. The drop size in terms of the vertical dimension of each drop in the direction of gravity flow through the drop chamber is determined by measuring the time it takes a drop to pass through each and both of the two sensor fields.

Abstract: A method and apparatus for sonication of blood to reduce Na.sup.+ K.sup.+ ATPase activity utilizes an extravascular sonication chamber and a blood pump to control the sonication parameters to prevent morphological damage to the blood cells. Secondary damage to surrounding tissues is avoided by sonicating the blood externally of the body. The sonicated blood may either be stored or returned directly to the body.

Abstract: The present invention discloses a flexible container device which forms a sterile system comprising a pouch-shaped container and a hose shaped connector. The container is characterized in that it comprises a tear-away first cover layer, for instance a tape, arranged over at least one sterile point of connection of at least one of said hose shaped connectors. The connecting end of the hose has a second cover layer placed over a sterile device for mounting the hose onto the container. An external grip device is arranged from the other end of the hose and is operatively connected to a puncturing device inside the hose which puncturing device punctures the container after the hose has been mounted thereon, thereby maintaining the system in a generally sterile condition. Also disclosed is a method for manufacturing said device.