A system and method for performing cryosurgery of the prostate while protecting surrounding tissue. Cryosurgical probes are provided with argon gas for cooling and with helium for warming. Probes are inserted into the prostate and supplied with argon gas for cooling, while probes inserted into the surrounding tissue and supplied with helium gas for warming. The warmed probes protect the surrounding tissue from freezing.
Paul W. Mikus - Irvine CA Gregory L. Kelly - Irvine CA Ralph K. Brady - Irvine CA
Assignee:
Endocare, Inc. - Irvine CA
International Classification:
A61F 700
US Classification:
607105
Abstract:
Cryocoolers for use in cryosurgery and other applications comprising dual finned tube helical coil heat exchangers. The size and shape of iceballs created by the probes is controlled by the location of the gas outlets within the cryocooler outer sheath.
Paul W. Mikus - Irvine CA Gregory L. Kelly - Irvine CA Ralph K. Brady - Irvine CA
Assignee:
Endocare, Inc. - Irvine CA
International Classification:
A61F 700
US Classification:
607105
Abstract:
Cryocoolers for use in cryosurgery and other applications comprising finned tube helical coil heat exchangers and a flow directing sheath covering portions of the heat exchanger coil and isolating portions of the heat exchanger coil from the outer sheath of the cryocooler. The size and shape of iceballs created by the probes is controlled by the extent and location of the flow directing sheath.
John Muri - Laguna Hills CA Ralph Kenton Brady - Capistrano Beach CA Gregory Lee Kelly - Laguna Niguel CA
Assignee:
Endocare, Inc. - Irvine CA
International Classification:
A61B 1739
US Classification:
606 46
Abstract:
An improved electrode for use in medical procedures requiring tissue removal. At least one gear shaped element is provided and mounted onto a distal tip region of a wire loop electrode. The gear shaped element distributes current at a tissue/electrode interface and enables the electrode to cut through substantial quantities of tissue while simultaneously creating a substantial rim of coagulation within an area of cut tissue.
