A multi-pole synchronous pulmonary artery radiofrequency ablation catheter may comprise a control handle, a catheter body and an annular ring. One end of the catheter body may be flexible, and the flexible end of the catheter body may be connected to the annular ring. The other end of the catheter body may be connected to the control handle. A shape memory wire may be arranged in the annular ring. One end of the shape memory wire may extend to an end of the annular ring and the other end of the shape memory wire may pass through a root of the annular ring and be fixed on the flexible end of the catheter body. The annular ring may be provided with an electrode group. The device possesses advantages of simple operation, short operation time and controllable precise ablation. The device can be used to treat pulmonary hypertension with pulmonary denervation.

Described here are devices, systems, and methods for forming a fistula between two blood vessels. The systems may comprise a first catheter including a housing and an electrode having a proximal end and a distal end. The proximal end is fixed relative to the housing and the distal end is longitudinally slidable within the housing.

A corrugated radiofrequency ablation catheter and an apparatus thereof. The radiofrequency ablation catheter is provided with a strip-shaped connecting catheter (10). An electrode frame is provided at the front extremity of the connecting catheter (10). A control handle (20) is provided at the rear extremity of the connecting catheter (10). The electrode frame is a corrugated electrode frame consisting of one or more corrugations. One or more electrodes (2) respectively are distributed on the corrugations. Slidable, supporting, wall-attaching adjustment wires (6) are provided within one lumen of the connecting catheter (10) and the electrode frame. The supporting, wall-attaching adjustment wires (6) are divided into a flexible segment (61) away from the control handle and a rigid segment (62) in proximity to the control handle.

The present disclosure relates to a bipolar catheter which enables a more precise surgical procedure by being configured to be able to evenly apply a high-frequency wave by an electrode tip being rotated inside a lesion area, and which can minimize damage to a surrounding tissue that can occur during an invasive surgery using a catheter, and which also enables a safer and more accurate surgical procedure compared to an existing surgical procedural method dependent on the medical technique of an operator, by electronically precisely controlling the position of the electrode tip within the lesion area.

A system includes an intravascular medical device and a therapeutic medical device. The intravascular medical device includes a heat therapy assembly and an elongated member coupled to the heat therapy assembly. The heat therapy assembly is configured to expand a vessel beyond an initial size of the vessel and deliver energy to a wall of the expanded vessel to heat the wall of the vessel. The therapeutic medical device is communicatively coupled to the heat therapy assembly and configured to control the heat therapy assembly to deliver the energy to ablate smooth muscle cells of the wall of the vessel and substantially denature one or more structural proteins of the wall of the vessel.

A method of predicting an adverse event during an ablation procedure includes providing a medical device having an expandable element and positioning the medical device proximate to an area of target tissue. The medical device includes a fluid exhaust lumen and a fluid supply lumen each being in fluid communication with the expandable element. The method further includes delivering fluid to expandable element and exhausting fluid from the expandable element; measuring a pressure within a vacuum return path; and measuring a period of time it takes for the pressure within the vacuum return path to reach a target pressure.

A system includes an intravascular medical device and a therapeutic medical device. The intravascular medical device includes a heat therapy assembly and an elongated member coupled to the heat therapy assembly. The heat therapy assembly is configured to contract a wall of a vessel and deliver energy to the wall of the contracted vessel to heat the wall of the vessel. The therapeutic medical device is communicatively coupled to the heat therapy assembly and configured to control the heat therapy assembly to deliver the energy to ablate smooth muscle cells of the wall of the vessel and substantially denature one or more structural proteins of the wall of the vessel.

A medical imaging system configured to provide cardiac sonothrombolysis therapy is disclosed. Various embodiments of portable cardiac sonothrombolysis devices are disclosed. The devices may be configured to determine if one or more ultrasound probes have a proper view of the heart, and if not, may steer the beam to a desired location. The ultrasound probes may be configured for both imaging and cardiac sonothrombolysis therapy. The ultrasound probes may be configured to be hands-free. The portable devices may be configured to provide operating instructions to an operator. The instructions may be provided via graphics, audio, and/or video.

A method and system for determining a location of a treatment element relative to an anatomical feature and for estimating contact between the treatment element and the anatomical feature in the context of a navigation system. The system may include a medical device including at least one treatment element and at least one navigation electrode and a navigation system in communication with the one or more navigation electrodes, the navigation system including a processing unit. The processing unit may be programmed to determine a plurality of points that define a surface geometry of the at least one treatment element, calculate a distance between each of the points and a closest point on the anatomical feature, and estimate the likelihood of contact between the points.

Disclosed is a catheter, especially a catheter for denervation, having an improved head structure and its manufacturing method, which may have a small design, allow convenient production and ensure excellent reproduction. The catheter includes a cylinder member having a hollow formed therein, at least one electrode mounted to the cylinder member to generate heat, and a power supply wire printed on the cylinder member and connected to the electrode to give a power supply path for the electrode.