Abstract:
An atherectomy device is disclosed herein. The atherectomy device includes a first drive shaft, a second drive shaft, a handle assembly, and a cutting member. The first drive shaft extends distally from the handle assembly and includes the cutting member mounted on a distal end region of the first drive shaft. The second drive shaft extends distally from the handle assembly to a distal end of the second drive shaft such that both the first and the second drive shafts are rotatable relative to the handle assembly, and the first drive shaft is rotatable independent of the second drive shaft.
Abstract:
A medical device for sympathetic nerve ablation may include an elongate shaft and an expandable member. A printed ablation electrode assembly may be disposed on an outer surface of the expandable member, the printed ablation electrode assembly including a positive electrical pathway and a ground electrical pathway printed directly on the outer surface of the expandable member. A temperature sensor may be printed directly on the outer surface of the expandable member. A method of manufacturing a medical device for sympathetic nerve ablation may include printing a conductive ink network directly on a surface of a polymeric balloon material in a flat configuration, printing at least one temperature sensor directly on the surface of the polymeric balloon material, forming the polymeric balloon material into an inflatable balloon, and attaching the inflatable balloon to an elongate catheter shaft.
Abstract:
An expandable balloon catheter having an elongate shaft having a distal end region and an expandable balloon coupled to the distal end region of the elongate shaft is disclosed. One or more cutting members are attached to the expandable balloon, wherein at least a portion of each of the one or more cutting members comprises a Curie material having a Curie temperature between 60° and 400° Celsius.
Abstract:
Methods and devices (e.g., for nerve modulation) may include at least one thermistor and a balloon having a balloon wall. In one or more embodiments, the medical device is configured and arranged to transfer heat to the medical device surroundings. In one or more embodiments, the at least one thermistor is a portion of a thermistor array disposed on the balloon wall, the thermistor array including a plurality of thermistors and operatively engaged with a source of electric current. In one or more embodiments, the device includes at least one flexible circuit mounted on the outer surface of the expandable balloon, the at least one flexible circuit including at least one temperature-sensing device that includes at least one thermistor, wherein at least a portion of a conductive layer is electronically coupled to the thermistor, with the proviso that no electrode is associated with the conductive layer.
Abstract:
Systems for the delivery of endoluminal devices are disclosed. An illustrative system may include a delivery sheath having an inner sheath and an outer sheath. The delivery sheath may be configured to restrain a stent in a compressed delivery configuration. The outer sheath may cover the entire length of the stent and the inner sheath may cover a portion of the length of the stent.
Abstract:
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.
Abstract:
A system for monitoring one or more temperatures at a vessel wall of a vessel of a patient includes an optical fiber, an optical read-out mechanism, and a therapeutic device. The optical fiber may be deployed along an extent of the vessel and may include one or more fiber Bragg grating (FBG) temperature sensors disposed at one or more corresponding sensor locations along a length of the optical fiber. The optical read-out mechanism may be optically coupled to the optical fiber, and it may be configured to transmit light into the optical fiber and detect light reflected from the one or more FBG temperature sensors. The detected light reflected from the one or more FBG temperature sensors may encode local temperatures at each of the one or more corresponding sensor locations. The therapeutic device may be configured for performing a therapeutic procedure to or through the vessel wall.
Abstract:
A medical device such as a catheter includes a shaft that extends from a proximal region to a distal region and that defines a shaft lumen extending therethrough. A hub is secured relative to the proximal region. A strain relief extends proximally over the shaft from the hub. At least one of the hub and the strain relief include a printed battery.
Abstract:
A system for charging an onboard battery of a medical device prior to use of the medical device may include a package configured to accommodate the medical device therein. A power source may be disposed relative to the package and may be capable of charging the onboard battery of the medical device prior to use of the medical device. The system may be capable of being subjected to a sterilization process with the power source disposed within the second cavity. In some instances, the power source is uncharged during sterilization. In some cases, the power source is encapsulated or otherwise sealed during sterilization.
Abstract:
A system for charging an onboard battery of a medical device prior to use of the medical device may include a package configured to accommodate the medical device therein. A power source may be disposed relative to the package and may be capable of charging the onboard battery of the medical device prior to use of the medical device. The system may be capable of being subjected to a sterilization process with the power source disposed within the second cavity. In some instances, the power source is uncharged during sterilization. In some cases, the power source is encapsulated or otherwise sealed during sterilization.