Abstract: Provided is an expansible catheter balloon that has a spreadable outer diameter controllable easily in treatments for a calcific aortic stenosis, rheumatic and congenital aortic stenoses and others, and that can be effectively prevented from being freely shifted and can easily be fixed at a predetermined position. The catheter balloon includes a balloon having shoulder parts made of a non-expansible material or made low-expansible and an expandable waist part, and a catheter having a catheter body to which this balloon is fitted.

Abstract: Provided is an expansive catheter balloon that has a spreadable outer diameter controllable easily in treatments for a calcific aortic stenosis, rheumatic and congenital aortic stenosis and others, and that can be effectively prevented from being freely shifted and can easily be fixed at a predetermined position. The catheter balloon includes a cylindrical balloon part that is made non-expansive or low-expansive, and a band part made of a stretchable elastic body. When a stretching force is not applied, the band part has a shorter diameter than a spread diameter of the balloon part and is wound around the center of the balloon part.

Abstract: The external surface of a balloon for IABP balloon catheter is designed to have a rough surface occupying an area of 10 to 80% both inclusive of the whole of the external surface, and a smooth surface occupying an area of 90 to 20% both inclusive thereof. The supplied balloon for IABP balloon catheter is certainly unwrapped by a predetermined balloon pressure from a driving machine, with no need to conduct any preloading process, and further which is not unwrapped before and during the insertion of the catheter even in the state that a wrapping sheath is removed.

Abstract: A filter device for capturing embolic material capable of retrogradely installing a filter is provided. A filter device for capturing embolic material has a core wire moving a filter member to a target position in a blood vessel, a guide portion formed on the distal front end side of the core wire and guiding the core wire in the blood vessel, the filter member provided on the core wire and capturing a blood clot and debris, and a sheath capable of extending the core wire therethrough.

Abstract: A balloon catheter comprises a long shaft including an inner pipe and an outer pipe, and a balloon provided at a distal end of the shaft, a distal end of the balloon being connected to the inner pipe, a proximal end of the balloon being connected to the outer pipe, and the balloon being inflated and deflated according to pressure of fluid supplied to an inside of the balloon. The balloon is molded in advance such that the balloon is inflated by pressure only to an extent in which a film of the balloon is not stretched, such that the balloon becomes a curved shape having a curved part between the proximal end and the distal end of the balloon, and such that the balloon, when deflated, is folded so as to be in a straight shape, in which the curved part is hidden, and wound around the inner pipe.

Abstract: An occlusion catheter for the ascending aorta capable of obstructing the blood flow within the ascending aorta without inserting through the femoral artery. The occlusion catheter is provided with a drug release aperture formed in the region, which is closer to the proximal end of the catheter tube than a balloon on the outer circumference of the distal end and which is to be located in the vicinity of the coronary ostium when the balloon is placed within the ascending aorta. The present occlusion catheter, when inserted directly into the ascending aorta in the vicinity of the heart to obstruct the blood flow therewithin, enables delivery of a cardiac muscle protective drug to the vicinity of the coronary ostium without inserting the occlusion catheter through the femoral artery in the conventional manner.

Abstract: A catheter which allows injection into a target region without imposing large burden on a medical patient can be provided. A catheter (1) is used by being inserted from outside of a body into a blood vessel and a distal end thereof being reached inside of a heart, that is a target region, while a proximate end thereof remaining outside of the body. The catheter (1) is configured in a way so that an injection mechanism (5) conducts injection into myocardium from inside of a heart while a forceps mechanism (3) holds myocardium inside of the heart. In the forceps mechanism (3), a grasping portion (13) provided at the distal end of the catheter (1) opens and closes in conjunction with manipulation at a first handling portion (11) provided at the proximate end of the catheter (1).

Abstract: An occlusion catheter for the ascending aorta capable of obstructing the blood flow within the ascending aorta without inserting through the femoral artery. The occlusion catheter is provided with a drug release aperture formed in the region, which is closer to the proximal end of the catheter tube than a balloon on the outer circumference of the distal end and which is to be located in the vicinity of the coronary ostium when the balloon is placed within the ascending aorta. The present occlusion catheter, when inserted directly into the ascending aorta in the vicinity of the heart to obstruct the blood flow therewithin, enables delivery of a cardiac muscle protective drug to the vicinity of the coronary ostium without inserting the occlusion catheter through the femoral artery in the conventional manner.

Abstract: A balloon catheter is provided with a core insertable from a connector into an inside of a shaft. When an operation for insertion/retraction of the core is carried out by pinching an operating part, the core slides along the shaft and the depth of the core in the shaft is thereby adjusted. When the core is inserted deeper in the shaft, the region of the shaft with a high rigidity increases with the core out to the shaft's distal end. On the other hand, when the core is retracted to the fore side, the rigidity of the shaft at its distal end side becomes lower and the flexibility of the balloon catheter becomes higher.

Abstract: An occlusion catheter for the ascending aorta capable of obstructing the blood flow within the ascending aorta without inserting through the femoral artery. The occlusion catheter is provided with a drug release aperture formed in the region, which is closer to the proximal end of the catheter tube than a balloon on the outer circumference of the distal end and which is to be located in the vicinity of the coronary ostium when the balloon is placed within the ascending aorta. The present occlusion catheter, when inserted directly into the ascending aorta in the vicinity of the heart to obstruct the blood flow therewithin, enables delivery of a cardiac muscle protective drug to the vicinity of the coronary ostium without inserting the occlusion catheter through the femoral artery in the conventional manner.

Abstract: An occlusion catheter for the ascending aorta capable of obstructing the blood flow within the ascending aorta without inserting through the femoral artery. The occlusion catheter is provided with a drug release aperture formed in the region, which is closer to the proximal end of the catheter tube than a balloon on the outer circumference of the distal end and which is to be located in the vicinity of the coronary ostium when the balloon is placed within the ascending aorta. The present occlusion catheter, when inserted directly into the ascending aorta in the vicinity of the heart to obstruct the blood flow therewithin, enables delivery of a cardiac muscle protective drug to the vicinity of the coronary ostium without inserting the occlusion catheter through the femoral artery in the conventional manner.

Abstract: A balloon catheter capable of expanding a narrowed site of a blood vessel in the vicinity of a curved part of the blood vessel, and of easily adapting the shape of the balloon to the shape of the curved part of the blood vessel. The balloon has a shape with a curved part, and the outer portion of the curved part (the shaded area) formed so as to have a smaller film thickness as compared with the remaining portion of the balloon is stretched by an amount larger than the remaining portion of the balloon. The difference in stretch amount between the outer portion of the curved part of the balloon and the remaining portion of the balloon becomes larger as the internal pressure of the balloon is increased. Accordingly, the extent of curve of the balloon can be controlled arbitrarily by controlling the internal pressure of the balloon.

Abstract: In order to provide an adhesive to adhere to the tissue of organisms a buffered solution containing a protein macromer having a vinylated protein, a polysaccharide macromer having a vinylated polysaccharide, or the both by mixture, along with a photo-reactive compound which generates radicals by irradiation is prepared. The solution is cured into a gel state by irradiation, adheres to and is fixed on the tissue surface.

Abstract: An infusion catheter having a catheter shaft with a distal end, an inflatable and contractible balloon provided adjacent the distal end but spaced therefrom, a blood passage with two openings for passing blood through the balloon, and first and second lumens. The first lumen communicating with the balloon to inflate and contract the balloon, and the second lumen including a medicine discharge port located between the balloon and one opening of the blood passage to supply medicine to a lesion part of a blood vessel.