Cardiac ablation catheters and methods of use. Catheters that include an expandable membrane, an imaging member disposed within the expandable membrane, the imaging member having a field of view, a light source disposed within the expandable member adapted to deliver light towards the field of view of the imaging member, and an electrode comprising an outer conductive layer and inner light absorbing layer disposed between the electrode and the expandable membrane, the inner light absorbing layer adapted to absorb light from the light source and thereby reduce reflection of the light from the outer conductive electrode.

The present invention provides a coronary sinus inspiration catheter comprising a catheter head section and an extension tube, which are hollow tubular structures, the catheter head section and a distal section of the extension tube are substantially arc-shaped, the catheter head section comprises an arc section and a bend section, and its length is about 4-10 cm, the distal end is small (3-6 F) and the tube diameter of the catheter head section increase gradually toward the proximal end (6-12 F), the catheter head section is bent at a 15-45° angle at the position which has a distance of 0.5-1.5 cm from the distal end, the bend section is a straight or slightly arc-shaped structure. The catheter head section is provided with an end hole and a plurality of side holes, and is equidistantly provided with radiopaque markers from the distal end to the proximal end.

In various embodiments, a medical device includes an instrument head that includes two or more electrodes and a medical device tool, an impedance bridge selectively coupled to the two or more electrodes, and a processor coupled to the impedance bridge. In various embodiments, a method for controlling medical device tools comprises recording, at one or more frequencies, two or more impedance measurements, wherein each impedance measurement is associated with two or more electrodes included in an instrument head of a medical device; and determining, based on the two or more impedance measurements, a tissue type map at a location associated with the instrument head.

The present invention relates to an ablation assembly (100) to treat target regions of a tissue (41) in organs (44) comprising: an ablation catheter (1) comprising an elongate shaft (13) having a longitudinal main direction (X-X), said elongate shaft (13) comprising at least a shaft distal portion (17), said shaft distal portion (17) comprising a shaft distal portion distal end (19);
said ablation catheter (1) comprising an inner lumen (118) arranged within the elongate shaft (13);
said ablation catheter (1) comprising a shaft ablation assembly (20) fixedly disposed at said shaft distal portion (17), the shaft ablation assembly (20) being configured to deliver both thermal energy for ablating said tissue (41) and non-thermal energy for treating said tissue (41); at least a shape setting mandrel (26) disposed within the ablation catheter (1), the shape setting mandrel (26) being insertable within the inner lumen (118) and removable from the inner lumen (118),
wherein the shape setting mandrel (26) is free to move in respect of the inner lumen (118) avoiding any constraint with said shaft distal portion (17) during the shape setting mandrel insertion,
wherein the shape setting mandrel (26) comprises at least a pre-shaped configuration and the shape setting mandrel (26) is reversibly deformable between at least a straight loaded configuration and said pre-shaped configuration,
wherein, when the shape setting mandrel (26) is fully inserted in the shaft distal portion (17), the shape setting mandrel (26) is configured to shape set said shaft distal portion (17) with said pre-shaped configuration.

A diagnostic imaging catheter includes: a drive shaft including a signal transmitter and receiver at a distal end portion and configured to rotate and move forward and backward; a support tube on an outer periphery of the drive shaft along an axial direction and configured to move forward and backward i with the drive shaft; a sheath in which the drive shaft is positioned; a relay connector connected to a proximal end of the sheath; and a sealing member providing a seal between the relay connector and the support tube at a position proximal of the sheath proximal end. The relay connector includes a main lumen extending from the sealing member to the sheath proximal end and an injection lumen communicating with the main lumen at a communication port. A distal end of the support tube is movable to a position proximal of the front edge of the communication port.

Cardiac tissue ablation catheters including an inflatable and flexible toroidal or spherically shaped balloon disposed at a distal region of an elongate member, a flexible circuit carried by an outer surface of the balloon, the flexible circuit including, a plurality of flexible branches conforming to the radially outer surface of the balloon, each of the plurality of flexible branches including a substrate, a conductive trace carried by the substrate, and an ablation electrode carried by the substrate, the ablation electrode in electrical communication with the conductive trace, and an elongate shaft comprising a guidewire lumen extending in the elongate member and extending from a proximal region of the inflatable balloon to distal region of the inflatable balloon and being disposed within the inflatable balloon, wherein a distal region of the elongate shaft is secured directly or indirectly to the distal region of the inflatable balloon.

Visualization and ablation systems and catheters. The systems can capture a plurality of different 2D images of the patient's anatomy adjacent an expandable member, each of which visualizes at least one part of the patient that is in contact with the expandable membrane, tag each of the plurality of different 2D images with information indicative of the position and orientation of a locational element when each of the plurality of different 2D images was captured, create a patient map, wherein creating the patient map comprises placing each of the plurality of different 2D images at the corresponding tagged position and orientation into a 3D space, and display the patient map.

The present invention relates to an ablation equipment (100) to treat target regions of tissue (41) in organs (44), comprising an ablation catheter (1) and a single power source (4);

said ablation catheter (1) comprising: a catheter elongated shaft (13) comprising at least an elongated shaft distal portion (17); said catheter elongated shaft (13) comprising a flexible body (207) to navigate through body vessels (208);
said ablation catheter (1) further comprising a shaft ablation assembly (20) disposed at said elongated shaft distal portion (17); said shaft ablation assembly (2) comprising at least a plurality of electrodes (127, 113 or 114) fixedly disposed at said elongated shaft distal portion (17);
all electrodes of said at least a plurality (127, 113 or 114) being electrically powered by said single power source (4) through an electric signal (S) to deliver both non-thermal energy for treating the tissue (41) and thermal energy for ablating the tissue (41);
wherein
said single power source (4), when requested, changes continuously said electric signal (S) in order to power the said least a plurality of electrodes (127, 113 or 114) to deliver from a non-thermal energy to a thermal energy, and vice versa, or to deliver at the same time a combination of thermal energy and non-thermal energy.

A dialysis catheter with an elongate body has a distal end defining blood removal and return ports communicating with internal blood removal and return lumens extending through the elongate body. A sensing pathway is disposed in or on the elongate body. A vascular dimension sensor is provided to dynamically measure changes in dimension of the SVC or IVC during dialysis. The sensor communicates with a control system and may be controlled or positioned via the communication pathway of the catheter body. Systems disclosed included integrated closed-loop treatment based on monitored vascular dimension input. Methods included patient optimized treatments incorporating treatment modulation based on dynamic vascular dimension monitoring.

Catheters, sheaths, or other tubular devices are provided that include a proximal end, a distal end sized for introduction into a patient's body, and a steerable distal portion carrying a plurality of electrodes. The tubular device includes a primary lumen extending between the proximal and distal ends; a steering element lumen adjacent the primary lumen; a plurality of wires extending proximally from the electrodes, and reinforcement members including windings extending helically along at least the distal portion, at least some of the windings passing between the primary and steering element lumens and wires, and at least some of the windings surrounding the primary lumen and one or both of the steering element lumen and the wires. In one embodiment, a steering element is slidably disposed within the auxiliary lumen. Apparatus and methods for making such tubular devices are also provided.