Handpiece for RF treatment of tissue

Abstract

A handpiece has a handpiece assembly and includes a handpiece housing. An insert is detachably coupled to the handpiece housing. The insert includes an RF electrode with a conductive portion and a dielectric.

Description

technical field [0001] The present invention generally relates to a handpiece for treating tissue, and in particular to an RF electrode handpiece for treating skin and underlying tissues. Background technique [0002] Human skin consists of two parts: the epidermis and the underlying dermis. The epidermis with the stratum corneum acts as a biological barrier to the external environment. In the basal layer of the epidermis, there are pigment-forming cells called melanocytes. They are determinants of skin color. [0003] The underlying dermis provides the primary structural support of the skin. It mainly consists of an extracellular protein called collagen. Collagen is produced by fibroblasts and synthesized as a triple helix with three polypeptide chains connected by heat-labile and heat-stable chemical bonds. When tissue containing collagen is heated, at characteristic temperatures, the physical properties of the protein matrix will change. At a specific "shrink" tempe...

AI Technical Summary

Problems solved by technology

Conversely, while the cooling effect is reduced to such that there is good thermal effect at the center of the electrode, it may not cool sufficiently to protect the tissue in contact with the edge of the electrode.

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