Patent application number | Description | Published |
20140257068 | CATHETER HAVING ELECTRICALLY CONDUCTIVE PATHWAYS - Medical devices having electrically conductive pathways are disclosed. More particularly, the disclosure is directed to catheter shafts including an electrically conductive wire embedded in a polymeric tube. The disclosure is also directed to catheter shafts including an electrically conductive media coextruded in a polymeric tube. The disclosure is also directed to catheter shafts including electrically conductive pathways formed with electrically conductive ink, paste, adhesive and/or epoxy. | 09-11-2014 |
20140323887 | THERMODILUTION CATHETER SYSTEMS AND METHODS FOR DETERMINING BLOOD FLOW RATES - Catheter systems and methods for determining blood flow rates based on temperature measurements by thermodilution. The catheter may include a fluid lumen defined between inner and outer tubular members for delivering an indicator fluid, and a guidewire lumen defined by the inner tubular member. The catheter may include fluid infusion openings at the distal end region of the outer tubular member configured to permit the indicator fluid to exit the catheter from the fluid lumen, and a fluid hole located at the distal end region of the inner tubular member configured to permit the indicator fluid to pass from the fluid lumen into the guidewire lumen. A temperature sensor positioned on a guidewire may be positioned within the guidewire lumen to measure the temperature of the indicator fluid entering the guidewire lumen through the fluid hole. A blood flow rate may be calculated based on the measured temperature. | 10-30-2014 |
20140378962 | DEVICES AND METHODS FOR NERVE MODULATION USING LOCALIZED INDIFFERENT ELECTRODES - The disclosure pertains to an intravascular catheter for nerve modulation. The catheter includes an elongate member having a proximal end and a distal end, and an inflatable balloon secured adjacent to the distal end of the elongate member. The balloon includes an exterior surface and an interior surface defining a lumen. The lumen includes a section that is permeable to radiofrequency (RF) radiation. The section extends from the interior surface of the balloon to the exterior surface of the balloon. A first electrode is disposed within the inflatable balloon and indifferent electrodes are disposed external to the inflatable balloon. | 12-25-2014 |
20150025532 | MEDICAL DEVICES FOR RENAL NERVE ABLATION - Medical devices and methods for making and using the same are disclosed. An example medical device may include a medical device for tissue ablation. The medical device may include an elongated shaft having a distal region. An inflatable balloon may be mounted to the distal region. The inflatable balloon may include a body region, a proximal waist, a distal waist, a proximal cone region, and a distal cone region. A skirt may be attached to the inflatable balloon and may extend proximally from the body region. An electrode assembly may be applied directly to an outer surface of the body region of the inflatable balloon. The electrode assembly may include a first conductive member applied directly to the outer surface of the body region of the inflatable balloon and extending proximally therefrom along an outer surface of the skirt. | 01-22-2015 |
20150066023 | RADIO FREQUENCY (RF) BALLOON CATHETER HAVING FLUSHING AND COOLING CAPABILITY - An intravascular catheter and related methods of use or manufacture are disclosed. The catheter includes an outer tubular member having a proximal end and a distal end, and an inner tubular member having a proximal end and a distal end. An inflatable balloon have a proximal end waist coupled to the outer tubular member adjacent to the distal end thereof, and a distal end waist coupled to the inner tubular member adjacent to the distal end thereof. The balloon includes an interior surface, an exterior surface, and a lumen defined by the interior surface. The balloon further includes at least one section extending from the interior surface of the balloon to the exterior surface of the balloon. A transmitter is disposed about the inner tubular member. In addition to the above, the proximal end waist is coupled to the outer tubular member such that an inflation fluid exits the balloon. | 03-05-2015 |
20150112215 | CATHETER SYSTEMS AND METHODS FOR DETERMINING BLOOD FLOW RATES WITH ACOUSTIC DILUTION - Catheter systems and methods for determining blood flow rates based on speed of sound measurements. The catheter may include a lumen extending between a proximal end of the catheter and a distal end of the catheter. The catheter may include fluid infusion openings at the distal end region of the catheter that are configured to permit the indicator fluid to exit the catheter from the lumen. The catheter system may include a guidewire having one or more sensors thereon for sensing speed of sound in a body vessel lumen and/or in a lumen of the catheter. The sensors may sense a sound sent through the catheter to the body vessel lumen. A blood flow rate may be calculated based on the measured speeds of sound. | 04-23-2015 |
20150174363 | INTEGRATED CATHETER SYSTEM - A guide catheter may include a tubular member having an inner layer defining a lumen extending therethrough, a reinforcing braid disposed about the inner layer, a plurality of steering wires interwoven through the reinforcing braid, and an outer layer disposed about the reinforcing braid. At least a portion of the reinforcing braid may be embedded within the outer layer. An introducer sleeve may be slidably disposed over the tubular member. A flush port element may be operably connected to the introducer sleeve. | 06-25-2015 |
20150190195 | TEAR RESISTANT FLEX CIRCUIT ASSEMBLY - A medical device for sympathetic nerve ablation may include a catheter shaft, an expandable member disposed on or coupled to the catheter shaft, and a plurality of elongate electrode assemblies each constructed as a flexible circuit having a plurality of layers. The expandable member may be configured to shift between an unexpanded configuration and an expanded configuration. The plurality of electrode assemblies may be disposed on an outer surface of the expandable member. Each of the plurality of electrode assemblies may include enhanced tear resistance properties such as through the inclusion of a reinforcement structure with one or more of the layers of the electrode assemblies. | 07-09-2015 |
20150190617 | GUIDE EXTENSION CATHETER - Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a guide extension catheter. The guide extension catheter may include a push member having a proximal portion with a proximal stiffness, a distal portion with a distal stiffness different from the proximal stiffness, and a transition portion disposed between the proximal portion and the distal portion. The transition portion may provide a smooth transition between the proximal stiffness and the distal stiffness. The push member may have a first outer diameter. A distal tubular member may be attached to the push member. The distal tubular member may have a second outer diameter larger than the first outer diameter. | 07-09-2015 |