Surgical and medical apparatus and instruments; apparatus for use in medical analysis; apparatus for the treatment of cancer; cancer diagnosis apparatus; surgical, medical and medical diagnostic devices, apparatus and instruments for use in cryoablation; medical devices for performing cryotherapy; medical devices for freezing tumours; minimally invasive surgical devices for treating cancerous and benign tissues; medical devices for delivering heat to the tip of a needle; cryoablation needles; cryoablation needles for medical purposes; microwave ablation systems comprised of microwave ablation medical devices and apparatus and incorporating integrated computer software for ablating human tissue using microwave energy; medical devices and medical electronic apparatus for the analysis of tumours; tissue ablation medical devices, apparatus and instruments comprised of ablation apparatus and instruments incorporating integrated computer software for use with microwave treatments; medical apparatus consisting of treatment probes and high pressure valves used for heat or freeze treatment; integrated medical diagnostic systems to predict ice ball propagation and isotherms within a tissue for medical diagnosis; integrated medical diagnostic systems to give location of given needles for medical diagnosis; integrated medical treatment systems for use in any cryoablation medical procedure and comprising medical devices, a gas supply unit, cryoablation needles and thermal sensors being component parts thereof; integrated medical treatment systems comprising medical devices and a cryoablation unit to predict ice ball propagation and isotherm for cryoablation medical procedures; integrated medical treatment systems comprising medical devices and a cryoablation unit for delivering cold temperatures to tissues for medical purposes; integrated medical treatment systems comprising medical devices and a cryoablation unit for delivering microwaves to tissues for medical purposes; parts and fittings for all the aforesaid goods.