Bernhardine Schumann

New cryosurgical probe suitable for endoscopic application in the minimal invasive therapy

Publisher Summary Object in view of the minimal invasive therapy(MIT) is to substitute the traditional open and therefore invasive surgically interventions through fewer invasive surgery. In addition to microsurgery and lasertherapy, which are mainly used in MIT, cryosurgery may also be used. Applications of endoscopic cryotips are possible in several medical disciplines e. g. in the gynecology. This chapter presents a liquid-nitrogen-cooled cryotip for use in gynecology. The cryogenic efficiency of the cryotip is proved by laboratory tests. It also presents the cryotechnical parameters, which are important for the medical therapy, such as freezing rate in dependence of the distance, isotherms, and cooling power. Cryosurgery is understood to be the applications of low temperatures down to 78 K (boiling point of liquid nitrogen) to attain therapy effects in various medical disciplines. Cryosurgery now is significant in the therapy of tumors of definite character, localizations and extend. The basic feature of cryosurgery is to devitalize the tissue by freezing in situ. By a defined regime of freezing and warming the tissue, the formation of extra- and intracellular crystallites destroys the cell membranes of cancerous tissue. In general cryosurgery includes favorable functional and cosmetic results.