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 stent comprises a cylindrical wall formed by meshed wires and a covering layer of elastic material extending on a portion of its length, with an outer surface, and totally embracing the wire mesh.

Abstract: The stent comprises a cylindrical wall formed by meshed wires and a covering layer of elastic material extending on a portion of its length, with an outer surface, and totally embracing the wire mesh.

Abstract: The stent comprises a flexible self-expandable braided tubular wall having a proximal segment having an outer diameter, and a distal segment having an outer diameter smaller than the outer diameter of the proximal segment. An intermediate segment is formed between proximal and distal segments, which forms a truncated cone of which the base is forming the proximal end of the intermediate segment and of which the top is forming the distal end of the intermediate segment. A covering layer is arranged within the tubular wall.

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 stent comprises a flexible self-expandable braided tubular wall having a proximal segment having an outer diameter, and a distal segment having an outer diameter smaller than the outer diameter of the proximal segment. An intermediate segment is formed between proximal and distal segments, which forms a truncated cone of which the base is forming the proximal end of the intermediate segment and of which the top is forming the distal end of the intermediate segment. A covering layer is arranged within the tubular wall.

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: 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 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: The pressure measuring guide wire comprises an elongated flexible shaft with a lumen extending therethrough. The lumen is surrounded by a wall forming the shaft and the distal portion of which is provided with slots for pressure medium entry. The distal portion has a thickness, greater than the thickness of the proximal area of the shaft. A coil surrounds the proximal area of the shaft to compensate the difference in kinking resistance between the proximal and distal areas of the shaft.

Abstract: In a catheter system for rapid exchange via a guidewire with a flexible, elongated inner catheter, which has a proximal end and a distal end as well as a guidewire lumen, which extends from an insertion port on the distal end to a lateral through port distally from the proximal end, and a flexible, tubular outer catheter, in which the inner catheter is disposed axially displaceably, and which has a lateral exit port for the guidewire, retaining means are provided on the inner catheter and the outer catheter, which retaining means prevent twisting of the outer catheter relative to the inner catheter. Thus, the through port and the exit port remain aligned with each other and the catheter system can be displaced simply along the guidewire. In addition, the outer catheter can be readily displaced relative to the inner catheter.

Abstract: A catheter device for the treatment of a vessel carrying body fluid, comprising an inner first occlusion catheter, having a first tubular shaft with a proximal end and a distal end, a distal occlusion balloon disposed at the distal end of the first tubular shaft and an inflation lumen extending through the first tubular shaft between a proximal entry at the proximal end and a distal exit inside the distal occlusion balloon, and an outer treatment catheter, having a second tubular shaft with a central lumen extending therethrough for coaxial reception of the first occlusion catheter, and being longitudinally displaceable with respect to the first occlusion catheter, further comprises a seal for the proximal entry of the inflation lumen, having an outside dimension small enough to fit within the central lumen for advancing, resp. withdrawing, a treatment catheter proximally onto, resp.

Abstract: A filament for irradiating a living body has a core material capable of irradiating radioactive radiation clad in a tubular casing of protective material different from the material forming the core. The materials forming the core and casing have a purity not less than 99.5 atomic percent and a grain size not exceeding 30 .mu.m and the outer diameter of the filament is not less than 80 .mu.m.

Abstract: A catheter with a balloon mounted coaxially thereon, and a radiation emitting source disposed and essentially centered in the catheter distal portion.

Abstract: Medical appliances for the treatment of blood vessels by ionizing radiation. A catheter 1 in which is centered a guide wire 2, a dilatation balloon 5 mounted coaxially on the catheter, and a radioactive radiation emitter in the form of a filament 4 integrated into the guide wire 2 inside the balloon 5.

Abstract: A balloon catheter with a tubular catheter shaft having a proximal and a distal end. The elongated dilatation balloon is arranged on the catheter shaft in the vicinity of the distal end. An indispensable covering sleeve is movable along the catheter shaft. The covering sleeve has a first portion with a first inner diameter surrounding the catheter shaft and a second portion with a second inner diameter being pushable over the deflated dilatation balloon. The second inner diameter is larger than said first inner diameter. The covering sleeve provides continuous adjustability of the fuller expandable balloon length.