Cryotherapy Device And Method For The Treatment Of Cervical Precancerous Lesions

A device, that connects to the outlet of a pressurized tank of a low-temperature liquid, for providing a patient with cryotherapy ablation, said device comprising:

• a piping assembly having a distal and a proximal end and a configuration adapted to allow said distal end to connect to said pressurized tank outlet and to create the proper flow conditions at said proximal end so as to create a spray of snow as a result of the freezing of said low-temperature liquid upon its exhaustion from said piping assembly,
• a tubular, snow horn having a distal and a proximal end, a boundary wall extending between said ends and enclosing the interior region of said snow horn, said snow horn also having a configuration adapted to allow said snow horn distal end to connect to said piping assembly proximal end and to create the proper flow conditions at said snow horn proximal end that enable a prescribed mass of said snow of a desired density to be collected in a specified period of time,
• a tubular applicator having a distal and a proximal end and a configuration adapted to allow said applicator distal end to temporarily connect to said snow horn proximal end in order to collect said prescribed mass of said snow during said specified period of time and wherein said mass of collected snow is sufficient to allow said mass of collected snow to serve as the low temperature thermal reservoir for said device after said applicator distal end has been disconnected from said snow horn proximal end so as to be used during said process of providing said cryotherapy ablation, and
• an applicator tip having an inner and an outer surface and a configuration adapted to allow said applicator tip to connect to said applicator distal end during said process of providing said cryotherapy ablation and to allow said outer surface of said applicator tip to come into contact with said patient for the purpose of providing a rate of low-temperature thermal transfer from said mass of collected snow to said patient that is sufficient for said cryotherapy ablation process.