Patents Assigned to Schneider (Europe) A.G.
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Patent number: 5728042Abstract: The appliance comprises a core wire on which is mounted a coil of radioactive material. A first proximal radiopaque coil configuration and a second distal radiopaque coil configuration maintain and locate the radioactive radiation coil on the core wire thereby assuring positioning thereof on the core wire and accurate visualization via X-ray fluoroscopy.Type: GrantFiled: December 29, 1995Date of Patent: March 17, 1998Assignee: Schneider (Europe) A.G.Inventor: Michael Schwager
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Patent number: 5725571Abstract: A catheter with a self-expanding stent of a permeable mesh of stiff intersecting fibers is provided. A tubular outer catheter shaft holds the stent under tension at its distal end and from which the stent can be released for placement. A displaceable inner catheter inside the tubular outer catheter shaft supports the stent axially at its proximal end. In order to release the stent, the outer catheter shaft is retracted with respect to the inner catheter. A process for producing this catheter is also described. The stent is secured by gripping it at its proximal end in such a way that it forms a permeable mesh cone that expands automatically together with the stent and has a radius that increases gradually to the radius of the relaxed stent. The stent is securely anchored on the inner catheter with the help of the mesh cone.Type: GrantFiled: November 20, 1996Date of Patent: March 10, 1998Assignee: Schneider (Europe) A.G.Inventors: Christian Imbert, Eugen Hofmann, Marc Gianotti
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Patent number: 5709703Abstract: The stent delivery device has an elongated sheath with a self-expandable stent placed in contracted condition within the distal area of the sheath. An elongated core is arranged in the sheath for relative longitudinal motion between core and sheath, and drive means are arranged between the core and the stent. Scratch protection tubular means comprise a reinforcement ring secured in the sheath and surrounding the distal end portion of the stent when the stent is in contracted condition in the sheath and a tube of thermoformable material heat shrunk over the proximal end portion of the stent and over the core.Type: GrantFiled: November 5, 1996Date of Patent: January 20, 1998Assignee: Schneider (Europe) A.G.Inventors: Goran Lukic, Marc Gianotti
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Patent number: 5706826Abstract: The guide wire comprises an elongated flexible shaft which is tubular. A helical coil assembly of radiopaque material comprises a first coil having a proximal portion threadedly force fitted into the tubular portion of shaft. A second coil has a proximal portion surrounding and threadingly engaging the distal portion of the first coil, and a distal portion terminating into a tip.Type: GrantFiled: December 21, 1995Date of Patent: January 13, 1998Assignee: Schneider (Europe) A.G.Inventor: Michael Schwager
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Patent number: 5688220Abstract: A medical device is disclosed for the treatment of a body lumen by radiation. The device includes a catheter for insertion into a body lumen, a radiation source, and a wire for advancing and removing the radiation source into and from the catheter.Type: GrantFiled: June 12, 1995Date of Patent: November 18, 1997Assignee: Schneider (Europe) A.G.Inventors: Vitali Verin, Youri Popowski
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Patent number: 5628755Abstract: The balloon catheter comprises a shaft with an elongated dilatation balloon mounted in the vicinity of the distal end thereof. Armature for preventing expansion of balloon segments are mounted on shaft proximally of the balloon and include an armature enclosed in a sleeve moveable over a proximal portion of the balloon.Type: GrantFiled: October 24, 1995Date of Patent: May 13, 1997Assignee: Schneider (Europe) A.G.Inventors: Mathias Heller, Alfonso M. Fernandez-Aceytuno, Rainer Amann, Roland Hirt, Jakob Willi
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Patent number: 5626602Abstract: A catheter with a radially self-expanding cylindrical vascular support made of a permeable mesh of crossed stiff fibers is disclosed. The catheter has a tubular outer catheter shaft and an inner catheter to which the vascular support is fixed. The tubular outer catheter shaft is axially movable with respect to the inner catheter.Type: GrantFiled: January 17, 1995Date of Patent: May 6, 1997Assignee: Schneider (Europe) A.G.Inventors: Marc Gianotti, Paul Lehmann
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Patent number: 5617875Abstract: 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.Type: GrantFiled: April 11, 1995Date of Patent: April 8, 1997Assignee: Schneider (Europe) A.G.Inventor: Michael Schwager
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Patent number: 5607466Abstract: A catheter with a self-expanding stent of a permeable mesh of stiff intersecting fibers is provided. A tubular outer catheter shaft holds the stent under tension at its distal end and from which the stent can be released for placement. A displaceable inner catheter inside the tubular outer catheter shaft supports the stent axially at its proximal end. In order to release the stent, the outer catheter shaft is retracted with respect to the inner catheter. A process for producing this catheter is also described. The stent is secured by gripping it at its proximal end in such a way that it forms a permeable mesh cone that expands automatically together with the stent and has a radius that increases gradually to the radius of the relaxed stent. The stent is securely anchored on the inner catheter with the help of the mesh cone.Type: GrantFiled: April 28, 1995Date of Patent: March 4, 1997Assignee: Schneider (Europe) A.G.Inventors: Christian Imbert, Eugen Hofmann, Marc Gianotti
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Patent number: 5605163Abstract: The guidewire attachment assembly comprises a tubing affixed to the proximal end of a guidewire. Inside the tubing is a shoulder and a ramp for directing and positioning a bolt arranged at the end of a resilient shaft affixed to the distal end of the extension wire. The assembly provides a positive locking action for the guidewire and extension wire and direct unlocking thereof.Type: GrantFiled: May 11, 1995Date of Patent: February 25, 1997Assignee: Schneider (Europe) A.G.Inventor: Robert Hani
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Patent number: 5569204Abstract: An aspiration catheter arrangement for aspiration of thrombi and emboli from blood vessels has a central catheter (2) and an outside catheter (1) surrounding it coaxially. A guide wire (4) and a dilator (3) are provided for inserting the catheter arrangement into a vessel and for dilating same. A blood clot is removed by means of a vacuum applied to the central catheter (2). If the central catheter (2) becomes clogged by the blood clot during the aspiration procedure, the central catheter (2) can be extracted out of the outside catheter (1) and replaced by a new central catheter (2). This new central catheter (2) can be connected to the aspiration device and the process is then continued. Instead of inserting a new central catheter (2), the aspiration process can also be continued through the outside catheter (1) by connecting the latter to the aspiration device after removing the central catheter (2).Type: GrantFiled: June 20, 1994Date of Patent: October 29, 1996Assignee: Schneider (Europe) A.G.Inventor: Bernhard M. Cramer
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Patent number: 5534287Abstract: The coated 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.Method of coating the stent using a lifting medium and then an elastomeric composition dissolved in solvent are disclosed.Type: GrantFiled: November 29, 1994Date of Patent: July 9, 1996Assignee: Schneider (Europe) A.G.Inventor: Goran Lukic
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Patent number: 5484444Abstract: A device for implanting endoprostheses has a tubular outer body and an elongated core element placed inside of the outer body. To operate the device, both the core element and the tubular body are provided with handles at their proximal ends. In order to produce a form-locking connection between the endoprosthesis and the core element, the core element exhibits a region in which is impressed a stamping corresponding to the inner form of the endoprosthesis. As a result, there are a great number of form-locking meshing sites between the enclosed, folded endoprosthesis and the core element. A device with this type of design permits a partially released endoprostheses to be folded back up in a radially contracted state again by pushing the tubular body forward so that the endoprosthesis may be repositioned. In addition, sure and reliable operation is achieved by this type of stamping of the core element.Type: GrantFiled: October 14, 1993Date of Patent: January 16, 1996Assignee: Schneider (Europe) A.G.Inventors: Reto Braunschweiler, Michel Bachmann
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Patent number: 5467873Abstract: The packaging for a catheter comprises a flat air tight support member and a cover member formed of an air tight and flexible sheet adhered by its periphery on the support member. A vacuum is exerted between the support member and the cover member by connection of a duct to a vacuum pump, and the duct is then sealed. The cover member thus takes the relief of the shapes of the catheter whatever they are.Type: GrantFiled: March 24, 1994Date of Patent: November 21, 1995Assignee: Schneider (Europe) A.G.Inventor: Gerhard Kastenhofer
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Patent number: 5447231Abstract: A packaging comprises a sealed peel-apart flexible pouch in which the preshaped stem of a medical appliance is maintained by elastic pressure of the walls of a sheath open at its ends formed by a wall having two parallel lateral edges forming slides in which are engaged the lateral edges of two spaced apart portions of a second wall. The two walls are flat and deformable by their own elasticity. A retaining window is provided in one of the walls for a handling and connecting hub connected to the stem of the medical appliance to extend therethrough.Type: GrantFiled: October 27, 1993Date of Patent: September 5, 1995Assignee: Schneider (Europe) A.G.Inventor: Gerhard Kastenhofer
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Patent number: 5429139Abstract: 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.Type: GrantFiled: March 7, 1994Date of Patent: July 4, 1995Assignee: Schneider (Europe) A.G.Inventor: Herbert Sauter
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Patent number: 5413581Abstract: The balloon dilatation catheter has a first lumen extending along the entire length of a shaft, which lumen is connected to a pump and, at the distal end of the catheter, to the inside of the balloon. Through this lumen there also passes a support wire connected firmly to the catheter. The shaft has an additional lumen which opens outwards via an opening behind the proximal end of the balloon. A controllable guide wire can be introduced into this lumen via an attachment piece. Similarly, a measuring apparatus or an apparatus for introducing a contrast medium or drug can be connected to this additional lumen. The catheter is particularly suitable for treating strictures in an arterial ramification.Type: GrantFiled: July 7, 1993Date of Patent: May 9, 1995Assignee: Schneider (Europe) A.G.Inventor: Jean-Jacques Goy
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Patent number: 5405380Abstract: A catheter with a radially self-expanding cylindrical vascular support made of a permeable mesh of crossed stiff fibers is disclosed. The catheter has a tubular outer catheter shaft and an inner catheter to which the vascular support is fixed. The tubular outer catheter shaft is axially movable with respect to the inner catheter.Type: GrantFiled: July 27, 1993Date of Patent: April 11, 1995Assignee: Schneider (Europe) A.G.Inventors: Marc Gianotti, Paul Lehmann
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Patent number: 5306247Abstract: A balloon catheter with a shaft having a balloon located proximate a distal end thereof, with the shaft having a lumen through which a balloon is supplied and a lumen through which a guide wire is passed. The shaft consists of a proximal area and a distal area, with the shaft being made of a stiffer material in the proximal shaft area than in the distal shaft area. In one embodiment of the proximal shaft area, the supply lumen and the guide lumen are coaxially disposed. In one embodiment of the distal shaft area, the supply lumen and the guide lumen are biaxially disposed. An /utlet opening for the guide wire is disposed in the shaft in the proximal area of the catheter wherein a guide wire passing through the opening can be advanced into the guide lumen and towards the balloon for passage through the distal end.Type: GrantFiled: December 9, 1992Date of Patent: April 26, 1994Assignee: Schneider (Europe) A.G.Inventor: Susanne Pfenninger
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Patent number: 5295961Abstract: A catheter system for mechanical dilatation of coronary arterial stenoses includes a balloon dilatation catheter, a guide wire and a guide catheter. The balloon dilatation catheter has, for the perfusion of vessel fluid during dilatation, side openings arranged both distal and proximal of the balloon and connected to one another via a lumen extending within the balloon. The internal lumen configuration of the balloon dilatation catheter permits the catheter system to be utilized as either a "monorail"-type or an "over-the-wire" system.Type: GrantFiled: June 25, 1992Date of Patent: March 22, 1994Assignee: Schneider (Europe) A.G.Inventors: Werner Niederhauser, Eugen Hofmann, Susanne Pfenninger-Ganz