Abstract: Systems and methods for navigation and positioning a central venous catheter within a patient. The system may include a first pole and a second pole designed to generate an electric field sufficient to obtain a plurality of field measurements. The system may include a stylet inserted into a medical device. The stylet may include a magnetic assembly configured to produce a magnetic field positioned along a distal portion of the stylet, and a stylet electrode positioned distal of the magnetic assembly. The stylet electrode may be designed to function as both an interior excitation electrode and an interior detection electrode. Advancement of the medical device in the patient may include using a conductance curve generated from the plurality of field measurements to identify an obstruction or malposition in the patient.

Abstract: Systems and methods for navigation and positioning a central venous catheter within a patient. The system may include a first pole and a second pole designed to generate an electric field sufficient to obtain a plurality of field measurements. The system may include a stylet inserted into a medical device. The stylet may include a magnetic assembly configured to produce a magnetic field positioned along a distal portion of the stylet, and a stylet electrode positioned distal of the magnetic assembly. The stylet electrode may be designed to function as both an interior excitation electrode and an interior detection electrode. Advancement of the medical device in the patient may include using a conductance curve generated from the plurality of field measurements to identify an obstruction or malposition in the patient.

Abstract: Systems and methods for navigation and positioning a central venous catheter within a patient. The system may include a first pole and a second pole designed to generate an electric field sufficient to obtain a plurality of field measurements. The system may include a stylet inserted into a medical device. The stylet may include a magnetic assembly configured to produce a magnetic field positioned along a distal portion of the stylet, and a stylet electrode positioned distal of the magnetic assembly. The stylet electrode may be designed to function as both an interior excitation electrode and an interior detection electrode. Advancement of the medical device in the patient may include using a conductance curve generated from the plurality of field measurements to identify an obstruction or malposition in the patient.

Abstract: The present embodiments provide systems and methods for improved retention of stents on a delivery system. In one embodiment, a delivery system comprises a catheter and a balloon. A proximal end of the balloon is secured to an exterior surface of the catheter at a first location, and a distal end of the balloon is secured to the exterior surface of the catheter at a second location. A plurality of bands are disposed in a circumferential space situated between the exterior surface of the catheter and an interior surface of the balloon. The plurality of bands may comprise at least four bands that are discretely spaced-apart in an axial direction from one another along a length of the catheter. At least one stent is secured to the exterior surface of the balloon in a compressed delivery state.

Abstract: Single injection methods for obtaining conductance measurements within luminal organs using impedance devices. In at least one method embodiment, the method is performed by introducing at least part of an impedance device into a mammalian luminal organ, the impedance device comprising an elongated body and a detector positioned along the elongated body, obtaining conductance measurements indicative of a fluid native to the mammalian luminal organ and indicative of a fluid injection while the detector is present within and outside of the lumen of the outer sheath, and calculating a size parameter of the mammalian luminal organ based in part upon some of the obtained conductance measurements.

Abstract: Systems and methods for navigation and positioning a central venous catheter within a patient. The system may include a first pole and a second pole designed to generate an electric field sufficient to obtain a plurality of field measurements. The system may include a stylet inserted into a medical device. The stylet may include a magnetic assembly configured to produce a magnetic field positioned along a distal portion of the stylet, and a stylet electrode positioned distal of the magnetic assembly. The stylet electrode may be designed to function as both an interior excitation electrode and an interior detection electrode. Advancement of the medical device in the patient may include using a conductance curve generated from the plurality of field measurements to identify an obstruction or malposition in the patient.

Abstract: The present embodiments provide systems and methods for improved retention of stents on a delivery system. In one embodiment, a delivery system comprises a catheter and a balloon. A proximal end of the balloon is secured to an exterior surface of the catheter at a first location, and a distal end of the balloon is secured to the exterior surface of the catheter at a second location. A plurality of bands are disposed in a circumferential space situated between the exterior surface of the catheter and an interior surface of the balloon. The plurality of bands may comprise at least four bands that are discretely spaced-apart in an axial direction from one another along a length of the catheter. At least one stent is secured to the exterior surface of the balloon in a compressed delivery state.

Abstract: Arterial system navigation methods and devices and systems to perform the same. In an exemplary embodiment of a method of the present disclosure, the method comprises the steps of inserting at least part of an impedance device into an artery of a patient, the artery selected from the group consisting of a femoral artery and a radial artery, obtaining at least one conductance measurement while navigating a distal end of the impedance device through an arterial vasculature of the patient until the distal end is at or near a left ventricle, and performing at least one medical procedure at a location within the arterial vasculature.

Abstract: Systems and methods for navigation and positioning a central venous catheter within a patient. The system may include a first pole and a second pole designed to generate an electric field sufficient to obtain a plurality of field measurements. The system may include a stylet inserted into a medical device. The stylet may include a magnetic assembly configured to produce a magnetic field positioned along a distal portion of the stylet, and a stylet electrode positioned distal of the magnetic assembly. The stylet electrode may be designed to function as both an interior excitation electrode and an interior detection electrode. Advancement of the medical device in the patient may include using a conductance curve generated from the plurality of field measurements to identify an obstruction or malposition in the patient.

Abstract: Devices and systems for navigation and positioning a central venous catheter within a patient. In an exemplary embodiment of a system of the present disclosure, the system comprises a first pole and a second pole, the first pole and the second pole configured to generate an electric field within a mammalian body sufficient to obtain a plurality of field measurements therein, and an elongated body configured for at least partial insertion into a blood vessel of the mammalian body and advancement through a vasculature, said advancement dependent upon the plurality of field measurements indicative of one or more locations of a portion of the elongated body within the vasculature. In at least one embodiment, the elongated body is configured as a stylet.

Abstract: Single injection methods for obtaining conductance measurements within luminal organs using impedance devices. In at least one method embodiment, the method is performed by introducing at least part of an impedance device into a mammalian luminal organ, the impedance device comprising an elongated body and a detector positioned along the elongated body, obtaining conductance measurements indicative of a fluid native to the mammalian luminal organ and indicative of a fluid injection while the detector is present within and outside of the lumen of the outer sheath, and calculating a size parameter of the mammalian luminal organ based in part upon some of the obtained conductance measurements.

Abstract: Devices and systems for navigation and positioning a central venous catheter within a patient. In an exemplary embodiment of a system of the present disclosure, the system comprises a first pole and a second pole, the first pole and the second pole configured to generate an electric field within a mammalian body sufficient to obtain a plurality of field measurements therein, and an elongated body configured for at least partial insertion into a blood vessel of the mammalian body and advancement through a vasculature, said advancement dependent upon the plurality of field measurements indicative of one or more locations of a portion of the elongated body within the vasculature. In at least one embodiment, the elongated body is configured as a stylet.

Abstract: Devices and systems for obtaining conductance data and methods of manufacturing and using the same. In at least one embodiment of a device of the present disclosure, the device is an elongated body with at least one groove defined therein, the at least one groove configured to receive one or more conductor wires therein. In another embodiment, the device is an elongated core body having a plurality of conductive elements positioned thereon and a coating to result in a device having an overall round-cross section.

Abstract: An endograft device includes: an expandable tubular body having an inner side and an outer side of a surrounding wall, the tubular body encloses a lumen, having a first open end and a second open end. A sheath pocket having a pocket wall longitudinally disposed along the tubular body, enclosing a channel. The sheath pocket having an input port disposed proximal to the first open end, and an output port disposed proximal to the second open end. The input port faces towards the first open end to provide an entrance to the sheath pocket. An expandable lining of wire framework, is inserted longitudinally into the lumen such that the lining of wire framework after expansion exerts an outward pressure against the inner side of the surrounding wall and against the pocket wall of the sheath pocket to naturally shut seal both the input port and the output port.

Abstract: A stent graft device having a plurality of axially offset rows of radiopaque markers for rotational orientation of the stent graft device. The stent graft device may include an expandable stent frame and attached graft member. Each row of radiopaque markers may include a plurality of radiopaque markers that are evenly spaced. Each row may also include a length that covers a limited portion of the circumference of the stent graft device, where each row is circumferentially offset such that a fluoroscopic projection of the stent graft device illustrates one of a plurality of unique visual orientations of the axially offset rows for use in visually determining a current rotational orientation of the stent graft device.

Abstract: Systems and techniques for positioning radiopaque markings on medical stent devices are provided. Specific combinations of adjacent radiopaque markings and overlapping radiopaque markings on the stent devices are presented to provide specific feedback information to an administrator working to guide the stent devices through vessels.

Abstract: Disclosed herein is a stent graft device with improved visualization characteristics and a method for making such a device. The device includes a plurality of radiopaque rings and associated structures, which are folded in a predictable fashion prior to crimping. In some embodiments, a mandrel for biasing the end rings of a ringed structure is utilized. In other embodiments, a biodegradable adhesive is used to assist in folding.

Abstract: Systems and methods for navigation and positioning a central venous catheter within a patient. The system may include a first pole and a second pole designed to generate an electric field sufficient to obtain a plurality of field measurements. The system may include a stylet inserted into a medical device. The stylet may include a magnetic assembly configured to produce a magnetic field positioned along a distal portion of the stylet, and a stylet electrode positioned distal of the magnetic assembly. The stylet electrode may be designed to function as both an interior excitation electrode and an interior detection electrode. Advancement of the medical device in the patient may include using a conductance curve generated from the plurality of field measurements to identify an obstruction or malposition in the patient.

Abstract: Devices and systems for navigation and positioning a central venous catheter within a patient. In an exemplary embodiment of a system of the present disclosure, the system comprises a first pole and a second pole, the first pole and the second pole configured to generate an electric field within a mammalian body sufficient to obtain a plurality of field measurements therein, and an elongated body configured for at least partial insertion into a blood vessel of the mammalian body and advancement through a vasculature, said advancement dependent upon the plurality of field measurements indicative of one or more locations of a portion of the elongated body within the vasculature. In at least one embodiment, the elongated body is configured as a stylet. In another embodiment, techniques for identifying and locating obstructions in the vessel in which a device is disposed are disclosed.

Abstract: Single injection methods for obtaining conductance measurements within luminal organs using impedance devices. In at least one method embodiment, the method is performed by introducing at least part of an impedance device into a mammalian luminal organ, the impedance device comprising an elongated body and a detector positioned along the elongated body, obtaining conductance measurements indicative of a fluid native to the mammalian luminal organ and indicative of a fluid injection while the detector is present within and outside of the lumen of the outer sheath, and calculating a size parameter of the mammalian luminal organ based in part upon some of the obtained conductance measurements.