Abstract: A method of using microencapsulated thermal conducting absorbing materials to cool heat sources is disclosed. Also disclosed are microcapsules containing a thermal energy conducting material. According to the method, these materials may be used alone or as a mixture and may be employed as a powder or incorporated into a hardenable matrix such as an epoxy resin.

Abstract: A body lumen measuring instrument for insertion into a body passageway such as a bronchial tube or the like in order to determine the interior lumen diameter and/or axial length of the passageway at a predetermined location. This instrument can also be used to aid selection of a radioisotope capsule of proper size to be properly positioned at a specific location for tumor treatment. The measuring instrument includes a flexible sleeve having a handle secured to one end. A cable is slidably positioned within the sleeve and secured at one end to a slide actuator within the handle and at the other end terminates in a probe adapted for determining body passageway size under endoscopic observation. A measurement scale is associated with an indicator on the slide actuator in order to display the passageway size.

Abstract: An implant capsule for insertion into a body canal to apply radiation treatment to a selected portion of the body canal. The device includes a body member defining at least one therapeutic treatment material receiving chamber and at least one resilient arm member associated with the body member for removably engaging the body canal when the device is positioned therein.

Abstract: The invention relates to a thermal energy storage apparatus wherein a housing defines a chamber and wherein inlet and outlet means communicate with the chamber. A channelling means is positioned within the chamber for dividing the flow stream of a heat exchange fluid into a plurality of separate flow streams and for directing the heat exchange fluid to flow therethrough. Positioned within the channelling means is means for storing and releasing the thermal energy by heat transfer to and from the exchange fluid as the fluid passes in contacting relation with the thermal energy storing and releasing means as the fluid passes through the housing.