Abstract: A plug and socket assembly for the extension of a guidewire with an extension wire. The plug is formed at the distal end of the extension wire and the socket is formed at the proximal end of the guidewire. Inside the socket is a female conical screw thread and outside the plug is a conical male screw thread. Assembly is obtained by mere insertion and screwing of conical male screw thread into conical female screw thread.

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 dental device comprises an elongated inflatable balloon for placement around a matrix band in part surrounding relationship with a decayed tooth. Upon inflation, the balloon evenly applies the matrix band against the tooth.

Abstract: A guidewire threader to facilitate insertion of the proximal end of a guidewire into the distal end of a catheter including two clamping pieces each of which has the shape of a lever having two arms and are hinged to each other for pivoting about a common axis between a closed clamp position and an open release position. A spring maintains clamping surfaces, each of which is provided on one arm of each clamping piece, positively in contact with each other in the clamp position. The clamping surfaces in their condition in contact with each other define a passage oriented roughly parallel to the common pivot axis open at both ends, the passage containing a section having an interior dimension corresponding to the outer diameter of the catheter and which is flared funnel-shaped at both of its ends. In the release position, the clamping surfaces open the passage in the lateral direction for removal of the guidewire.

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: A catheter with a first component, a second component, and a glue line disposed between the components which is filled with an adhesive layer joining the components. The adhesive layer is formed in two plies, whereby a first adhesive ply is bonded to the first component and a second adhesive ply is bonded to the first adhesive ply and to the second component. Thus, even catheter components which could not be bonded to each other with the use of a single-ply adhesive layer or could only be bonded with inadequate stability can be firmly bonded to each other. Moreover, one of the adhesive plies may be applied in the unassembled state of the components.

Abstract: The guidewire comprises an elongated flexible shaft which is tubular. A coil assembly comprises a first coil having a proximal portion with a peripheral size providing an unstressed fit within the distal portion of shaft. Tight recesses formed between consecutive turns of the coil by a solder filler hold adhesive between the coil and the tubular shaft.

Abstract: The guide wire serves in particular for the percutaneous introduction of a balloon dilation catheter into a blood vessel and has a flexible coil which surrounds a likewise flexible shaft and is produced from at least two coil springs, which are rotated together at a connection location over a plurality of turns and are soldered to one another. For the purpose of connection, at the end to be connected, the two coil springs are each slid onto a centering mold, rotated together and soldered. The centering mold is then removed. The connection location is tubular and internally hollow, so that the flexible shaft can be inserted subsequently.

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: When installed in the device, the endoprosthesis is compressed radially and located in a cylindrical chamber (14), one proximal area (A) of this endoprosthesis lies within a first outer catheter (3) and a second distal area (B) is in a second outer catheter (30). In order to release the endoprosthesis (1) in a vessel (11), for example, the second outer catheter (30) is first retracted. The endoprosthesis (1) is then held in the first outer catheter (3) by friction and can be re-folded and thus repositioned by advancing the second outer catheter (30). Finally, the endoprosthesis (1) is released by retracting the first outer catheter (3). Because the friction is distributed over at least two outer catheters (3, 30), even endoprostheses (1) that generate a high level of friction on the outer catheter, for example because of a coating, of greater expansion force, or because of great length, can be released.

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 pressurized fluid medium supplied to the balloon is pulsated by the squeeze and release action of the ram and saddle arrangement.

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: The guide wire of this invention is especially suited for the percutaneous introduction of a balloon dilatation catheter into a blood vessel. It contains a flexible shaft with a proximal portion and a distal portion. A flexible helical coil assembly surrounds the distal portion of the shaft. The helical coil assembly has a radiographically visible distal helical coil and a proximal radiographically invisible helical coil. The proximal helical coil and the distal helical coil are attached to each other by a connecting helical coil that on one end is screwed into the proximal helical coil and on the other end is screwed into the distal helical coil.

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 comprises a shaft with an elongated dilatation balloon mounted in the vicinity of the distal end thereof. Member for preventing expansion of balloon segments are mounted on shaft proximally of the balloon and comprise an armature enclosed in a sleeve moveable over a proximal portion of the balloon.

Abstract: A body compatible device including an elongate filament substantially uniform in lateral cross-section over its length and having multiple fibers having high tensile strength embedded in a polymeric material. The polymeric material may be melted onto the fibers, and the filament may have an elongate polymeric case surrounding the filament. The body compatible device may be a stent of a tubular latticework.

Abstract: The pressure monitoring guidewire comprises an elongated tube made of one piece of elastic Nickel Titanium alloy. The distal end portion of the tube has transverse openings formed through the tube wall for the entry of pressure waves into a lumen. The distal end portion of the tube which encompasses the openings, is malleable. The pressure monitoring guidewire can be formed by thermally treating the distal end portion of a guidewire formed of an elongated tube of one piece of elastic Nickel Titanium alloy having a distal end portion with transverse openings.

Abstract: A catheter assembly for the treatment of vessels carrying body fluid, comprising an inner catheter provided with a guidewire lumen for receiving a guidewire and an inflation lumen for a balloon provided at its distal end. The catheter assembly further comprises an outer catheter provided with an inflation lumen for a balloon provided at its distal end and a lumen in which the inner catheter is applied shiftable for changing the spacing of the two balloons and which features a larger cross-section than that of the inner catheter so that between the outer wall of the inner catheter and the inner wall of the outer catheter a cross-section employable as an inflation lumen exists and ports into the portion sited between the two balloons.

Abstract: The endoprosthesis is inserted under tension in a recess of a flexible inner catheter and secured by means of a tube-shaped outer catheter. To release the endoprosthesis into a vessel, the outer catheter is pushed back over the recess. The recess is formed by a connector piece that connects a tip to a piece of tubing of the inner catheter. The inner catheter can be designed with a smaller outer diameter in the region of the recess than was previously the case with at least the same flexibility and resistance to buckling.

Abstract: A docking assembly for the extension of a guidewire. The docking assembly comprises a plug formed at the proximal end of the guidewire, and a socket formed of a tubing permanently bent so as to have a V shaped portion comprised between two straight portions. The end of straight portion is affixed to the distal end of extension wire. A sleeve is slidably engaged over the tubing to substantially straighten it and facilitate insertion of plug into the tubing. Removal of sleeve allows the tubing to recover its preshaped deformation, thereby assuring locking of plug in tubing. To release the assembly it suffices to pull the guidewire and extension wire oppositely to slip the plug out from the tubing.