The current invention concerns systems, devices and methods for the ablation of a ablation of the wall of one or more pulmonary veins (PV) from the inside, preferably transmural ablation and preferably at the level of the antrum. Hereby, one or more implant devices can be implanted in the vessels and can subsequently be heated by external energy-providing means.

The current invention concerns systems, devices and methods for the ablation of a vessel's wall from the inside, more specifically to implant devices and to the ablation of the wall of one or more renal arteries from the inside, preferably transmural ablation. Hereby, one or more implant devices can be implanted in the vessels and can subsequently be heated by external energy-providing means.

The current invention concerns systems, devices and methods for the ablation of a vessel's wall from the inside, more specifically to implant devices and to the ablation of the wall of one or more renal arteries from the inside, preferably transmural ablation. Hereby, one or more implant devices can be implanted in the vessels and can subsequently be heated by external energy-providing means.

Systems for forming a fistula between two blood vessels are provided. In embodiments, the system may include a catheter having a housing and a treatment portion coupled to the housing. The treatment portion may include a thermoelectric generator comprising an exposed surface exposed outside of the housing and a concealed surface opposite and electrically connected to the exposed surface. The thermoelectric generator may be configured to produce a temperature differential between the exposed surface and the concealed surface when an electric current is applied to one of the exposed surface and the concealed surface thereby producing the temperature differential between the exposed surface and the concealed surface such that the exposed surface is heated to a temperature greater than the concealed surface to weld the two blood vessels together.

Systems for forming a fistula between two blood vessels are provided. In embodiments, the system may include a catheter having a housing and a treatment portion coupled to the housing. The treatment portion may include a thermoelectric generator comprising an exposed surface exposed outside of the housing and a concealed surface opposite and electrically connected to the exposed surface. The thermoelectric generator may be configured to produce a temperature differential between the exposed surface and the concealed surface when an electric current is applied to one of the exposed surface and the concealed surface thereby producing the temperature differential between the exposed surface and the concealed surface such that the exposed surface is heated to a temperature greater than the concealed surface to weld the two blood vessels together.

A battery assembly for a medical instrument that an operator can grip by a hand and operate, includes: a battery including a first laminated body unit including a solid electrolyte layer and configured to generate electrical energy; a casing including a wall section configured to store the battery inside; and a support provided in the casing and configured to support the battery apart from the wall section in a lamination direction of the first laminated body unit.

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.

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.

An electrosurgical treatment system includes an output section that supplies a high-frequency output to a treatment instrument, a detecting section that detects a voltage and an electric current of the high-frequency output in the output section, a phase-difference detecting section that calculates a phase difference between the detected voltage and electric current, and a control section that switches, on the basis of a change in the phase difference, a first phase for drying a biological tissue by applying the high-frequency output to the biological tissue while increasing the voltage to a second phase for coapting the biological tissue by performing, with a set value of a voltage determined according to a voltage value of the high-frequency output at an end point in time of the first phase, constant voltage control.

An apparatus and method for sending test signals to an instrument, and checking the resultant and subsequently arriving echo signals in order to detect specific properties and changes of properties on the line, the instrument, the tissue or also on a fluid body, e.g., plasma body, present on an electrode of the instrument, and to control the operation of the supply arrangement accordingly.