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John A. Simpson, Carlsbad US

John A. Simpson, Carlsbad, CA US

Patent application numberDescriptionPublished
20080288056RADIOPAQUE MARKERS COMPRISING BINARY ALLOYS OF TITANIUM - There is disclosed a radiopaque marker comprising a binary alloy of titanium and one binary element selected from platinum, palladium, rhodium, and gold. There is also disclosed various medical devices, such as stents, guidewires and embolic filters, that have the radiopaque marker attached thereto. Methods of attaching the radiopaque marker to the medical devices, such as by welding, are also disclosed.11-20-2008
20080296274METHOD FOR LASER CUTTING TUBING USING INERT GAS AND A DISPOSABLE MASK - A method for making a device includes providing a tubular member which will be formed into the device, masking at least a portion of the inner surface of the tubular member with a removable sacrificial material, selectively removing a portion of the tubular member and sacrificial material using a laser device, and mechanically removing the sacrificial material from the inner surface of the tubular member. The method may also include applying a chemical solution to the tubular member and sacrificial material which primarily attacks the either the tubular member or sacrificial material.12-04-2008
20090099645Radiopaque markers and medical devices comprising binary alloys of titanium - There is disclosed medical devices, such as stents, guidewires and embolic filters, comprising a binary alloy of titanium and one binary element selected from platinum, palladium, rhodium, and gold. There is also disclosed a radiopaque marker comprising the disclosed binary alloy, as well as medical devices having the radiopaque marker attached thereto. Methods of attaching the radiopaque marker to the medical devices, such as by welding, are also disclosure also disclosed.04-16-2009
20090156998CATHETER HAVING TRANSITIONING SHAFT SEGMENTS - A catheter having shaft segments which are joined together by a strong bond providing a low profile shaft section with a flexibility transition and/or a compositional transition. A balloon catheter embodying features of the invention has a distal tip member and a coupling band member surrounding a junction of an inner tubular member of the shaft, and has a gradual change in bending stiffness along a distal end section of the shaft which extends distally from a location within the balloon interior. Another catheter embodying features of the invention has shaft segments joined together by a diagonal seam.06-18-2009
20100121346Compliant Guiding Catheter Sheath System - A guiding catheter system employs a compliant shaft with an inflatable balloon affixed to a distal portion of the shaft. The inflatable balloon includes channels that allow some amount of blood to flow past the balloon when inflated in a blood vessel. One or more inflation lumens is in fluid contact with the balloon and allows inflating the balloon from a proximal end of the catheter. A series of perfusion orifices may be included on the shaft proximal to the balloon.05-13-2010
20110210108METHOD FOR LASER CUTTING TUBING USING INERT GAS AND A DISPOSABLE MASK - A method for making a device includes providing a tubular member which will be formed into the device, masking at least a portion of the inner surface of the tubular member with a removable sacrificial material, selectively removing a portion of the tubular member and sacrificial material using a laser device, and mechanically removing the sacrificial material from the inner surface of the tubular member. The method may also include applying a chemical solution to the tubular member and sacrificial material which primarily attacks the either the tubular member or sacrificial material.09-01-2011
20110230829Arterial Tamponade Device and Method - An arterial tamponade device is expandable between a collapsed condition and a fully expanded position and has opposite ends which are spaced farther apart in the expanded position. A foot or pressure pad is associated with at least one end of the device. The device is inserted into a body cavity in its collapsed state and is released at a predetermined location so that opposite ends of the device are biased away from one another and engage and apply pressure to opposite wall areas of the body cavity before the device is fully expanded, with the pressure pad positioned to apply pressure to a predetermined tissue area which includes a blood vessel so as to occlude or partially occlude the vessel and reduce or cut off blood flow to the body cavity.09-22-2011
20110230907ARTERIAL TAMPONADE DEVICE AND METHOD - An arterial tamponade device is expandable between a collapsed condition and an expanded position and has opposite ends, with an enlarged pad at one or both ends. The device is inserted into a body cavity in its collapsed condition and is released at a predetermined location so that opposite ends of the device are biased away from one another and apply pressure to opposite wall regions of the body cavity before the device is fully expanded, with a pad at one end positioned to apply pressure to a predetermined tissue area which includes a blood vessel so as to occlude or partially occlude the vessel and reduce or cut off blood flow to the body cavity. The pad may have a bulbous projection configured to engage a depression of a body cavity wall region in which a blood vessel is located.09-22-2011

Patent applications by John A. Simpson, Carlsbad, CA US