Abstract: An intra pelvic cancer therapeutic agent perfusion apparatus and method for administering a cancer therapeutic agent to and recovering same from a cancer tissue site within the pelvis. The tip of a first sheath is percutaneously inserted into the femoral artery and the tip of a second sheath is inserted into the femoral vein. A first balloon catheter is inserted into the aorta through the femoral artery and a second balloon catheter is inserted into the vena cava through the femoral vein. The first balloon catheter is used to block the blood flow and the second balloon is inflated to form an intravenous closed region between the site of insertion in the vena cava and a lower limb side venous site. A body fluid containing a cancer therapeutic agent is administered to the intra arterial closed region through the first sheath and is removed therefrom through the second sheath.

Abstract: The present invention finds utility in the field of therapy of paraaortic lymph node tumors, and is directed to provisions of a drug perfusion method capable of preventing a drug delivered to the site of tumor tissue from leaking into the surrounding tissue regions, effectively exposing the lymph nodes to a drug of high concentration, and reducing or preventing adverse side effects which would otherwise be imposed on the patient; to a catheter-introducing sheath; and to an axygenated blood perfusion apparatus. According to the invention, balloon catheters 32-1, 32-2, 32-3, 32-4, 32-5, 33, and 34 are employed to block the right renal artery 20, the left renal artery 21, the celiac artery 12, the superior mesenteric artery 19, the inferior mesenteric artery 24, the aorta 3, and the inferior vena cava 4, respectively, whereby a blood-vessel-blocked region is created.

Abstract: An intra pelvic cancer therapeutic agent perfusion apparatus and method for administering a cancer therapeutic agent to and recovering same from a cancer tissue site within the pelvis. The tip of a first sheath is percutaneously inserted into the femoral artery and the tip of a second sheath is inserted into the femoral vein. A first balloon catheter is inserted into the aorta through the femoral artery and a second balloon catheter is inserted into the vena cava through the femoral vein. The first balloon catheter is used to block the blood flow and the second balloon is inflated to form an intravenous closed region between the site of insertion in the vena cava and a lower limb side venous site. A body fluid containing a cancer therapeutic agent is administered to the intra arterial closed region through the first sheath and is removed therefrom through the second sheath.

Abstract: A K-filter is the one attached to an apparatus for serial high-speed rotatography for photographing an object to be examined by use of X-rays. The filter comprises two K-containers (5a and 5b) in which a space is defined for fluidly containing a radiopaque fluid substance, and a radiotransparent region (2) formed between the two K-containers (5a and 5b). The K-containers (5a and 5b) are pivotally supported by a supporting member (1a) and are of the inversion type which allows the radiotransparent region sides of the K-containers to move. Therefore, when this apparatus is rotated at a high speed to more than 180.degree., it is possible to conduct filtering under any conditions such as an inclined posture, not the horizontal posture, under which photographing is started.