A method for tissue coagulation includes using a device that has a plurality of conductive elements and a return electrode which is in the form of a grid. A moving mechanism moves the conductive elements so that the tip of each conductive element protrudes distally through the spaces of the grid of the return electrode into a tissue at a first depth. A first radiofrequency (RF) voltage is applied between the tips of each conductive element, which are at the first depth, and the return electrode. The conductive elements are then moved from the first depth to second depth of protrusion, and a second RF voltage is applied between the tips of each conductive element at the second depth and the return electrode.

The invention provides for a system for estimating a 3-dimensional treatment volume for a device that applies treatment energy through a plurality of electrodes defining a treatment area, the system comprising a memory, a display device, a processor coupled to the memory and the display device, and a treatment planning module stored in the memory and executable by the processor. In one embodiment, the treatment planning module is adapted to generate an estimated first 3-dimensional treatment volume for display in the display device based on the ratio of a maximum conductivity of the treatment area to a baseline conductivity of the treatment area. The invention also provides for a method for estimating 3-dimensional treatment volume, the steps of which are executable through the processor. In embodiments, the system and method are based on a numerical model which may be implemented in computer readable code which is executable through a processor.

Disclosed includes a body surface device for diagnosing locations associated with electrical rhythm disorders to guide therapy. The device can sense electrical signals and determine multiple sites that may be operative in that patient. The patch may encompass the heart regions from where the heart rhythm disorder originates. The patch comprises an array of electrodes configured to detect electrical signals generated by a heart. A controller may determine the locations of interest based on detected electrical signals. The controller is configured to locate these regions relative to the surface patch. The system may be coupled to a sensor or therapy device inside the heart, to guide this device to a region of interest. The controller is further configured to instruct the operator to use the trigger or source information to treat the heart rhythm disorder in an individual using additional clinical data and methods for personalization such as machine learning.

Tumor treating fields (TTFields) can be delivered by implanting a plurality of sets of implantable electrode elements within a person's body. Temperature sensors positioned to measure the temperature at the electrode elements are also implanted, along with a circuit that collects temperature measurements from the temperature sensors. In some embodiments, an AC voltage generator configured to apply an AC voltage across the plurality of sets of electrode elements is also implanted within the person's body.

Systems and methods for delivering energy to passageways in a patient, such as airways in the lung of a patient for treating asthma. One embodiment of a method for delivering energy to a passageway comprises positioning an access device in a lung airway of a patient and advancing an elongated body of a treatment device along the access device until an energy delivery unit at a distal portion of the elongated body projects from the access device. The method can further include expanding the energy delivery unit such that energy delivery elements contact a sidewall of the airway and activating an energy supply coupled to the treatment device such that energy is delivered to the sidewall of the airway. A single person physically operates both the access device and the treatment device while expanding the energy delivery unit and activating the energy supply.

A medical probe includes a generally tubular member with a tip portion coupled to the tubular member. A puller wire is disposed in the tubular member and configured for movement along the longitudinal axis to bend the tip portion with respect to the longitudinal axis. An anchor is disposed within the tubular member and connected to the puller wire such that the anchor has a t-bar. The t-bar includes a generally transverse extension and a ferrule connected to the puller wire. The probe includes a fiber engaged to the generally transverse extension and extending distally into the probe to increase a strength of the anchor with respect to forces applied to the puller wire to deflect the tip of the medical probe.

A treatment device for providing a magnetic treatment and a radiofrequency treatment to a body area of a patient. The device includes an energy storage device for storing electric energy, a magnetic field generating device, and a switching device to discharge the electrical energy from the energy storage device to the magnetic field generating device, such that a time-varying magnetic field is generated and provides muscle contraction to a muscle in the body area of the patient. The time-varying magnetic field may have a magnetic field density in a range of 0.1 Tesla to 7 Tesla and a repetition rate in a range of 0.1 Hz to 700 Hz. The device may also include a radiofrequency electrode to generate radiofrequency waves to heat a tissue in the body of the patient. A body of the radiofrequency electrode may include a plurality of openings in a range of 5 to 1000 openings.

A system for performing a medical procedure on mucosal tissue in an intestine of a patient is provided. The system including a catheter a catheter for insertion into the intestine, and a console. The catheter comprises: a shaft including a distal portion, and a functional assembly on the distal portion of the shaft. The functional assembly is configured to receive fluid. The console comprises: at least one pumping assembly configured to deliver the fluid to the functional assembly; and a connector configured to operably attach the catheter to the console. The functional assembly is configured to treat target tissue of the intestine of the patient. Methods of treating intestinal mucosal tissue are also described.

Embodiments of the present invention include a medical probe having a flexible insertion tube, a basket assembly, and a plurality of electrodes. The basket assembly has a proximal end that is connected distally to the insertion tube and includes a plurality of resilient spines, which have respective outer sides and inner sides and are configured to bow radially outward from an axis of the basket assembly and are conjoined at the proximal end and at a distal end of the basket assembly. The plurality of electrodes are fixed to respective ones of the spines in respective longitudinal positions that are staggered on any given spine relative to the longitudinal positions of the electrodes on the spines adjacent to the given spine, and which include a conductive material that is biased towards the respective outer sides of the spines.

An ablation device and an ablation system provided with an ablation device, include an ablation assembly and an adjustment assembly provided at the proximal end of the ablation assembly. The adjustment assembly includes an outer catheter and an inner catheter which extend axially. The ablation assembly includes a supporting framework and an ablation member provided on the supporting framework. The supporting framework includes a positioning frame and a bearing frame. The positioning frame is provided at the distal end relative to the bearing frame, the distal end of the outer catheter is connected to the proximal end of the bearing frame, the distal end of the inner catheter is connected to the distal end of the positioning frame. During moving of the inner catheter relative to the outer catheter, the supporting framework deforms, and the deformation ratio of the positioning frame is less than that of the bearing frame.