Abstract: The present disclosure provides technology that can ensure excellent visibility when introducing an embolization agent and that reduces the visibility of said agent after introduction. Provided is an embolization agent having a hydrogel which contains a visualizing agent, and a reaction product of an ethylenically unsaturated monomer, a crosslinking agent, and, as necessary, a bifunctional monomer, where the swelling ratio of the embolization agent is 5-300 times, and the post-swelling CT number of the embolization agent is 50-300 HU and falls below the pre-swelling CT number of the embolization agent.

Abstract: An embolic material which prevents flow of a biological fluid by being placed in a body lumen via a catheter, the embolic material comprising a material that swells by contacting the biological fluid. The embolic material includes a long filler that is formed smaller than an inner diameter of the catheter. The filler prevents the flow of the biological fluid by bending when brought into contact with the biological fluid due to the difference in swelling characteristics between a first side portion and a second side portion that extend parallel to one another in a longitudinal direction.

Abstract: The present disclosure provides a technique capable of ensuring good visibility when introducing an embolic agent and reducing the visibility after introduction. Provided is an embolic agent kit. The embolic agent kit includes: a catheter having an inner cavity; a reaction product of an ethylenically unsaturated monomer and a crosslinking agent, which is filled in the inner cavity; and a priming solution containing a visualization agent and configured to prime an inside of the catheter.

Abstract: To permit placement of an embolic device embolic device at a desired indwelling position in an aneurysm and readjustment of the indwelling position of the embolic device that is already indwelled, a medical instrument set includes an embolic device insertable into a delivery catheter, and configured to, when the embolic device is indwelled in an aneurysm, absorb a liquid in the aneurysm and expand, and an elongated delivery pusher insertable into the delivery catheter and configured to push the embolic device out of the delivery catheter into the aneurysm. The delivery pusher includes an elongated main body and an aspiration lumen that is formed to penetrate to main body in an axial direction from a distal end to a proximal end of the main body and causes the delivery pusher to aspirate and hold the embolic device.

Abstract: To displace an amount of curvature of a curved section at the tip of an insertion part that delivers an embolic device into an aneurysm to facilitate insertion/removal operations, an elongated and hollow delivery catheter includes an elongated main body, and a curved section at the distal side of the main body that curves to gradually move away from a center axis of the main body. The curved section has a lumen that continues from the distal end of the curved section toward the base end of the main body and enables delivery of an embolic device into an aneurysm through the lumen. The delivery catheter is usable with an elongated correcting member that is insertable into the delivery catheter lumen and that displaces the curved section so that an amount of curvature of the curved section after insertion is less than that before insertion.

Abstract: A medical device has a rotatable drive shaft, a rotary body whose distal end includes a cutting edge for applying a cutting force to a stenosed site, and that is disposed on a distal side of the drive shaft so as to be rotated in conjunction with rotation of the drive shaft, and a distal member disposed in the rotary body. The distal member has a support portion extending to a distal side beyond a distal end of the rotary body, and configured to be capable of supporting the rotary body with respect to a blood vessel. The support portion is configured so that a distance from the rotary body is variable in a first direction (height direction) in which the rotary body is moved close to the stenosed site.

Abstract: A medical device has a rotatable drive shaft, a rotary body that includes a cutting edge for applying a cutting force to a stenosed site, and that is disposed on a distal side of the drive shaft so as to be rotated in conjunction with rotation of the drive shaft, a switching portion whose distal end is disposed at a position protruding from the cutting edge, and a holding portion that holds the switching portion so as to move the switching portion on the same plane as the cutting edge or to a position away from the stenosed site beyond the cutting edge in accordance with a pushing force, when the switching portion is pushed against the stenosed site.

Abstract: An embolic material which prevents flow of a biological fluid by being placed in a body lumen via a catheter, the embolic material comprising a material that swells by contacting the biological fluid. The embolic material includes a long filler that is formed smaller than an inner diameter of the catheter. The filler prevents the flow of the biological fluid by bending when brought into contact with the biological fluid due to the difference in swelling characteristics between a first side portion and a second side portion that extend parallel to one another in a longitudinal direction.

Abstract: An embolus material for inhibiting the inflow of blood into an aortic aneurysm from a branched blood vessel by filling, via a catheter, the inside of the aortic aneurysm joined to the branched blood vessel includes: an elongated filling body that is formed to be narrower than the inside diameter of the catheter; and a shaping section that is provided at a portion of the filling body and that forms a structure larger than the width of the branched blood vessel after exiting from the catheter.

Abstract: A tire includes a circular tire frame including a resinous material. The resinous material includes a thermoplastic elastomer including a hard segment (HS) and a soft segment (SS), and 55% or more of molecular chain terminals of the thermoplastic elastomer are hard segments (HS).

Abstract: A tire including a tire skeleton body that is made of a resin material containing a polyamide-based thermoplastic elastomer and has a ring shape, wherein the polyamide-based thermoplastic elastomer includes a hard segment, a soft segment consisting of a constituent unit derived from polypropylene glycol, and a binding portion that binds two or more segments and that consists of a constituent unit derived from a dicarboxylic acid of from 6 to 20 carbons, the polyamide-based thermoplastic elastomer having a weight average molecular weight of from 20,000 to 250,000.

Abstract: A tire including a tire frame that is formed of a resin material and has a circular form, the resin material including a thermoplastic elastomer having a hard segment and a soft segment, and a polymer compound that has the same structural unit as the structural unit of the soft segment and which is different from the thermoplastic elastomer, a content of the polymer compound in the tire frame being from 0.20 parts by mass to 2.5 parts by mass with respect to 100 parts by mass of the thermoplastic elastomer contained in the tire frame.

Abstract: There is provided a tire including a tire frame that is formed of a resin material and has a circular form, wherein the resin material includes a thermoplastic elastomer having a hard segment (HS) and a soft segment (SS), in which only one unit of the soft segment (SS) is included in a single molecular chain, and both terminals of the single molecular chain are formed by the hard segment (HS), the thermoplastic elastomer having a number average molecular weight of from 12,000 to 24,000.

Abstract: There is provided a tire comprising a tire frame that is formed of a resin material and has a circular form, wherein the resin material comprises a thermoplastic elastomer having a structure including a hard segment (HS) and a soft segment (SS), which repeat alternately, in which a number of repeating units in one molecular chain is from 2 to 10, each of the repeating units being a pair of the hard segment (HS) and the soft segment (SS), the thermoplastic elastomer having a number average molecular weight of from 45,000 to 160,000.

Abstract: A tire includes a rubber member and a round tire frame made of a resin material. The resin material includes a thermoplastic elastomer, and has a deflection temperature under load of 150° C. or higher. The thermoplastic elastomer includes a soft segment and a hard segment derived from a polyamide. A minimum number X of carbon atoms present between nitrogen atoms in the main chain of the polyamide in the hard segment and a molecular weight Y of the hard segment satisfy the following Formulae 1 to 3: Y=250X+A??Formula 1: 6?X?12??Formula 2: ?1000?A?1500.

Abstract: A medical device has a rotatable drive shaft, a rotary body whose distal end includes a cutting edge for applying a cutting force to a stenosed site, and that is disposed on a distal side of the drive shaft so as to be rotated in conjunction with rotation of the drive shaft, and a distal member disposed in the rotary body. The distal member has a support portion extending to a distal side beyond a distal end of the rotary body, and configured to be capable of supporting the rotary body with respect to a blood vessel. The support portion is configured so that a distance from the rotary body is variable in a first direction (height direction) in which the rotary body is moved close to the stenosed site.

Abstract: A medical device has a rotatable drive shaft, a rotary body that includes a cutting edge for applying a cutting force to a stenosed site, and that is disposed on a distal side of the drive shaft so as to be rotated in conjunction with rotation of the drive shaft, a switching portion whose distal end is disposed at a position protruding from the cutting edge, and a holding portion that holds the switching portion so as to move the switching portion on the same plane as the cutting edge or to a position away from the stenosed site beyond the cutting edge in accordance with a pushing force, when the switching portion is pushed against the stenosed site.

Abstract: A tire including a circular tire frame formed from a resinous material, the resinous material including a thermoplastic elastomer including a hard segment, a soft segment, and a connection portion that connects two or more segments, wherein a difference in SP value, in absolute value, between the soft segment and the connection portion is 7.7 or less.

Abstract: A tire including a tire frame that is formed of a resin material and has a circular form, the resin material including a thermoplastic elastomer having a hard segment and a soft segment, and a polymer compound that has the same structural unit as the structural unit of the soft segment and which is different from the thermoplastic elastomer, a content of the polymer compound in the tire frame being from 0.20 parts by mass to 2.5 parts by mass with respect to 100 parts by mass of the thermoplastic elastomer contained in the tire frame.

Abstract: A tire including a tire skeleton body that is made of a resin material containing a polyamide-based thermoplastic elastomer and has a ring shape, wherein the polyamide-based thermoplastic elastomer includes a hard segment, a soft segment consisting of a constituent unit derived from polypropylene glycol, and a binding portion that binds two or more segments and that consists of a constituent unit derived from a dicarboxylic acid of from 6 to 20 carbons, the polyamide-based thermoplastic elastomer having a weight average molecular weight of from 20,000 to 250,000.