Abstract: The catheter comprises a catheter tube formed of two superposed tubular layers of materials which differ from one another. A tubular mediator layer is arranged between the layers to provide an adhesive anchorage for the layers.

Abstract: An interventional catheter for angioplasty and the like, including a catheter tube including an outer tubular member, an inner tubular member disposed within the lumen of the outer tubular member, and a balloon attached to the distal end of the outer tubular member and the distal end of the inner tubular member. The outer tubular member includes a first portion having a first stiffness and a second portion having a second stiffness less than the first stiffness. The inner tubular member has an inner surface having a first coefficient of friction and an outer surface having a second coefficient of friction greater than the first coefficient of friction.

Abstract: The catheter comprises a catheter tube formed of two superposed tubular layers of materials which differ from one another. A tubular mediator layer is arranged between the layers to provide an adhesive anchorage for the layers.

Abstract: A preshaped tubular catheter for percutaneous transradial approach to catheterization, comprises a distal bridge shaped portion having a distal arch defining a primary curve, a top defining a secondary curve, and a proximal arch defining a tertiary curve. The proximal arch is connected to a straight shaft. The shaft is stiff and the bridge shaped portion has a flexibility extending at least up to and including the primary curve and a stiffness extending at least up to and including the tertiary curve.

Abstract: A preshaped tubular catheter for percutaneous transradial approach to catheterization, comprises a distal bridge shaped portion having a distal arch defining a primary curve, a top defining a secondary curve, and a proximal arch defining a tertiary curve. The proximal arch is connected to a straight shaft. The shaft is stiff and the bridge shaped portion has a flexibility extending at least up to and including the primary curve and a stiffness extending at least up to and including the tertiary curve.

Abstract: The catheter comprises a catheter tube formed of two superposed tubular layers of materials which differ from one another. A tubular mediator layer is arranged between the layers to provide an adhesive anchorage for the layers.

Abstract: A preshaped tubular catheter for percutaneous transradial approach to catheterization, comprises a distal bridge shaped portion having a distal arch defining a primary curve, a top defining a secondary curve, and a proximal arch defining a tertiary curve. The proximal arch is connected to a straight shaft. The shaft is stiff and the bridge shaped portion has a flexibility extending at least up to and including the primary curve and a stiffness extending at least up to and including the tertiary curve.

Abstract: The catheter comprises a catheter tube formed of two superposed tubular layers of materials which differ from one another. A tubular mediator layer is arranged between the layers to provide an adhesive anchorage for the layers.

Abstract: An apparatus is guided by a guidewire within a luminal structure of a patient for receiving a radiation dose delivery wire with a radiation source attached to its distal end, for treating a disease process. The apparatus includes a balloon catheter with a blind lumen sealed at its distal end and a guidewire lumen extending therethrough to accept a guidewire. The blind lumen is adapted to accept the radiation delivery wire into its proximal end. In a method of treating the disease process with the apparatus, the guidewire is inserted into the guidewire lumen of the balloon catheter, the balloon catheter is inserted into the patient's luminal structure at least as far as a predetermined section of the luminal structure, the radiation dose delivery wire is inserted into the blind lumen in the balloon catheter and moved a predetermined distance therein for a predetermined period of time, and, after the period has elapsed, the radiation dose delivery wire is removed from the blind lumen.

Abstract: The balloon catheter comprises a catheter tube surrounded distally by an elongated inflatable balloon. Throughout the catheter tube is a longitudinal lumen for positioning a radioactive radiation emitter within the balloon. The catheter comprises a second lumen for directing inflation fluid into the balloon. Belt means creating a waist are mounted on the balloon to squeeze it down to nearly the diameter of the catheter thereby leaving a small passage for the inflation fluid. The belt means divide the balloon into sections to assure a close center fit of the catheter within the balloon.

Abstract: The appliance comprises radioactive radiation means formed by a coiled filament of radioactive material a proximal part of which is formed by a coiled filament having a pitch larger than that of the coiled filament. Coiled filament is for meshing with thread formed at the distal end of a guidewire.

Abstract: The medical appliance has an elongated tubular shaft with a lumen extending therethrough and slots in the distal area for pressure medium entry into the lumen. A stiffening means in the form of an independent wire extends through the lumen with its proximal area extending proximally of the shaft. The proximal area of shaft is affixed to a luer-lock comprising a housing with an inner cavity and a distal end forming a muff fixedly and tightly sealed on the proximal end of the shaft.

Abstract: An interventional catheter for angioplasty and the like, comprising a catheter tube formed of two superposed layers of materials different from one another. The inner layer is comprised of a low friction nonkinkable material to avoid risk of clogging of a guide wire in the longitudinal lumen. The outer layer is comprised of a material with higher friction coefficient than the material forming the inner layer. The balloon is welded at its distal end to the outer layer of the catheter tube. The proximal end of the balloon is welded to a tube surrounding the catheter tube.

Abstract: Medical appliances for the treatment of blood vessels by means of ionized radiation.

Abstract: A preshaped tubular catheter for percutaneous transradial approach to catheterization, comprises a distal bridge shaped portion having a distal arch defining a primary curve, a top defining a secondary curve, and a proximal arch defining a tertiary curve. The proximal arch is connected to a straight shaft. The shaft is stiff and the bridge shaped portion has a flexibility extending at least up to and including the primary curve and a stiffness extending at least up to and including the tertiary curve.

Abstract: An interventional catheter for angioplasty and the like, comprising a catheter tube formed of two superposed layers of materials different from one another. The inner layer is comprised of a low friction nonkinkable material to avoid risk of clogging of a guide wire in the longitudinal lumen. The outer layer is comprised of a material with higher friction coefficient than the material forming the inner layer. The balloon is welded at its distal end to the outer layer of the catheter tube. The proximal end of the balloon is welded to a tube surrounding the catheter tube.

Abstract: The balloon catheter has a portion of its tubular shaft sequentially squeezed between a ram reciprocating in a box and a saddle arranged in a cover closely fitting on the box. The pressurised fluid medium supplied to the balloon is pulsated by the squeeze and release action of the ram and saddle arrangement.

Abstract: The catheter comprises a catheter tube formed of two superposed tubular layers of materials which differ from one another. A tubular mediator layer is arranged between the layers to provide an adhesive anchorage for the layers.

Abstract: The appliance comprises radioactive radiation means formed by a coiled filament of radioactive material a proximal part of which is formed by a coiled filament having a pitch larger than that of the coiled filament. Coiled filament is for meshing with thread formed at the distal end of a guidewire.

Abstract: A medical appliance for use in magnetic resonance imaging procedures. A guidewire for vascular procedures is formed by a coaxial cable acting as antenna in a magnetic resonance imaging system.