Therapeutic hypothermia instrument
US4483341A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1982 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Dec 9, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable hypothermia instrument for the in-situ treatment of oncological disorders includes a cylindrical casing terminating at a first end in a concave tumor-abutting portion of a thermoconductive material which is thermally adjacent the cold junction of a cascaded three-component solid state cooler and shaped to partially surround the target tissue in order to provide a convergent freezing effect. The cooler comprises a thermoelectric first cooling section, a thermomagnetic second cooling section and an Ettingshausen third cooling section connected thermally in parallel to afford a stepped temperature reduction across a wide thermal gradient and to provide a temperature level, freezing rate and repetitive freeze/thaw cycles sufficient for tumor necrosis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.