An electrode for use in an electrosurgical procedure for treating varicose veins. In a preferred embodiment, the electrode is characterized by a bare active sharpened tip portion at the end of a needle-shaped member capable of penetrating the vein of a patient. The vein-tissue damage is effected with the bare tip and the adjacent portions of the needle are made insulating to prevent accidental burns to the patient and to allow the physician to use these insulated parts to help position and guide the active tip portion during the surgical procedure.

A transmission system of eyebrow-beautifying device is disclosed. A lever member has two contacts at bottoms of both sides. The contacts rest on a periphery of a wear-resistant member. A pivot point of a transmission unit and the lever member is disposed above the contacts. A torque of the lever member is substantially the same as that of the transmission unit. A rate of wear between the lever member and the wear-resistant member is substantially the same as that between the transmission unit and the lever member. That is, no amplification of error or wear may exist therebetween. Hence, the prior drawback of deterioration of vibration of the motor shaft caused by serious wear of the action block is completely eliminated.

An electrosurgical instrument is useful for therapeutic treatment of varices, especially small varicose dilatations of the cutaneous veins. A surgical instrument is provided for rapid, reliable and minimally discomforting therapy of small varicose dilatations of the cutaneous veins and similar disorders, ensuring the lowest possible rate of recidivism while minimizing side effects. The instrument has two fork-shaped protruding needle electrodes which connect to different poles of an electrical power source and which are each partially enclosed in an electrical insulating layer. The forward tip region of the needle electrodes is left open.

A method and apparatus for sterilization wherein a flexible, non-resilient, filamentar electrode having an exposed cauterizing tip at one end thereof, and having a thin, dielectric, lubricous covering insulating the electrode up to the exposed tip, is inserted into a severed vas deferens. The electrode insertion is continued until the tip has been located a predetermined distance into the vas. This distance is less than the covering length so that the tip is contiguous with the inner vas walls but the remainder of the electrode is completely insulated therefrom. A second electrode is placed in electrical contact with the patient's body. A radio frequency (r.f.) energy source is applied to the other electrode end to cause r.f. energy flow from the tip to the inner vas wall. The tip is then withdrawn at a predetermined rate while applying r.f. energy to the electrode to thereby cauterize the inner walls which join together in permanent sperm-sealing relation.

An electrode for use in electrocautery includes a central electrode having an outer electrode coaxially disposed therearound. The central and outer electrodes are electrically insulated from each other and are adapted to receive a high frequency voltage or direct voltage thereacross. The diameter of the central electrode as well as the inner and outer diameters of the outer electrode are dimensioned in accordance with the designated use of the probe, for example: general surgery, specialty surgery or micro surgery. In the preferred embodiment, the central or axial electrode has an elongate cylindrical shape with one end thereof tapering down to a point. The outer electrode has an elongate hollow tubular shape which is coaxially disposed around the central electrode. A first end of the outer electrode is disposed slightly behind the tapered tip of the central electrode in order to form a probe end wherein the tapered tip of the central electrode protrudes slightly beyond the plane defining the terminus of the outer electrode, depending on its use the tip need not be tapered nor protrude. Depending upon the use, the probe end may be either straight or curved. The electrodes are incorporated into an insulated holder which includes an electrical connector for mating to a high frequency voltage source.