Various embodiments disclosed relate to a lubricant. The lubricant includes a first non-amphiphilic triglyceride. The lubricant further includes a second non-amphiphilic triglyceride. The second non-amphiphilic triglyceride is different from the first non-amphiphilic triglyceride. The lubricant further includes a non-amphiphilic glycol ester.

An electrosurgical device having a radiating tip portion for delivering electromagnetic energy to biological tissue, where the electrosurgical device is disposed in a catheter. The electrosurgical device is movable relative to the catheter between a deployed position where the radiating tip portion is exposed and a retracted position where the radiating tip portion is contained within the catheter. In this manner, the radiating tip portion may be retracted until the moment when it is to be used. This may facilitate insertion of the device through an instrument channel of a surgical scoping device. In particular, this may prevent the radiating tip portion from catching on the instrument channel when the device is inserted into the instrument channel, which could cause damage to the instrument channel and/or radiating tip portion.

An electrosurgical system for treating biological tissue that comprises: an electrosurgical generator to supply microwave energy; a surgical scoping device having a steerable insertion cord for insertion to a treatment site; and an electrosurgical instrument dimensioned to fit within an instrument channel that is located within the insertion cord. The electrosurgical instrument comprises: a flexible coaxial cable arranged to convey the microwave energy; and a radiating tip portion connected at an end of the coaxial cable and configured to receive microwave energy. The radiating tip portion comprises: a coaxial transmission line for conveying the microwave energy; and a needle tip mounted at an end of the proximal coaxial transmission line, wherein the electrosurgical instrument is slidable within the instrument channel to extend the needle tip beyond an end of the instrument channel to puncture biological tissue; the needle tip is arranged to deliver the microwave energy into biological tissue.

An energy generator includes a connector port configured to couple to an electrosurgical instrument including an electrode having a polymeric dielectric coating; a power converter configured to generate energy; and a sensor coupled to the power converter and configured to sense a parameter of the energy. The energy generator also includes a controller coupled to the sensor and the power converter. The controller is configured to: control the power converter to output energy to modify an electrical property of the polymeric dielectric coating; and determine whether the electrical property of the polymeric dielectric coating has been sufficiently modified by the energy.

The disclosure provides a method of manufacturing a flexible circuit electrode assembly and an apparatus manufactured by said method. According to the method, an electrically conductive sheet is laminated to an electrically insulative sheet. An electrode is formed on the electrically conductive sheet. An electrically insulative layer is formed on a tissue contacting surface of the electrode. The individual electrodes are separated from the laminated electrically insulative sheet and the electrically conductive sheet. In another method, a flexible circuit is vacuum formed to create a desired profile. The vacuum formed flexible circuit is trimmed. The trimmed vacuum formed flexible circuit is attached to a jaw member of a clamp jaw assembly.

An ultrasonic treatment tool comprises: a blade including a treatment portion at a distal side of the blade, the blade configured to transmit an ultrasonic vibration from a proximal side of the blade to the treatment portion and the treatment portion configured to treat a body tissue, a grasper movable relative to the treatment portion between an open position and a closed position to grasp the body tissue between the grasper and the treatment portion, a coating provided on the grasper, the coating is formed by a first resin, when the grasper is in the closed position, the coating contacts the treatment portion.

In an example, an electrosurgical electrode for an electrosurgical tool can include a proximal end configured to receive electrosurgical energy from an electrosurgical tool and a distal end opposite the proximal end. The electrosurgical electrode can also include a cutting-electrode portion extending from the proximal end to the distal end. The cutting-electrode portion is configured for cutting tissue using the electrosurgical energy received from the electrosurgical tool. Additionally, the electrosurgical electrode can include a coagulating-electrode portion extending from the proximal end to the distal end. The coagulating-electrode portion is configured for coagulating tissue using the electrosurgical energy received from the electrosurgical tool. The electrosurgical electrode can further include an insulator between the cutting-electrode portion and the coagulating-electrode portion.

In an end effector of a high-frequency treatment instrument, a coating covers an outer surface of an electrode, and formed from a conductive mixture obtained by mixing a non-conductive material and a conductive material. The conductive material contained in the mixture includes first elements and second elements, and each of the first elements has a shape with a higher flatness quotient than each of the second elements.

A catheter-based device tracks over a guidewire which has been placed from a first blood vessel into a second blood vessel. The distal tip of the catheter is advanced into the second vessel while a proximal member remains in the first vessel. Matching blunt tapered surfaces on each of the distal tip and the proximal member are clamped together, with adjacent walls of each vessel between them, after which a known, controlled pressure is applied between the two surfaces. Heat energy is then applied to the blunt surfaces for approximately 1-30 seconds to weld the walls of the two vessels together. After coaptation of the vessel walls, the heat is increased to then cut through the vessel walls to create a fistula of the desired size.

Disclosed is a surgical tool. The surgical tool comprises a surgical tool head (11) and a rod shaft (12). The surgical tool head (11) is connected with the shaft (12). The shaft (12) is a flexible shaft and comprises a flexible core and a flexible sleeve. The flexible sleeve has an inner cavity, and the flexible core is slidably disposed in the inner cavity. The surgical tool head (11) comprises two jaws (111, 112). The flexible core and the flexible sleeve are respectively connected with the two jaws (111, 112), and the flexible core is able to slide relatively to the flexible sleeve to drive the two jaws (111, 112) to make relative opening and closing movements. The shaft (12) of the surgical tool can be bent freely into any shape, and thus can be integrated into a flexible surgical tool and applied in a wider range.