What is a crystat?

The word crystat is the word of compound meaning of the roots kryo, , which means cold and stat, , which means static or stationary. Crystat is a tool used to maintain very low temperatures at -238 ° Fahrenheit (-150 Celsius) or below, for many medical, utilities and scientific uses. Chemicals to maintain these temperatures are a liquid helium bath for tissue samples or liquid nitrogen for patients with cryonics. The inner vessel of the crystat is similar to vacuum flask in the construction; And there is an accurate cutting tool for tissue cuts known as a microtome inside the freezing part of the crystat.

There is a metal cold board in contact with a liquid bath bath baths inside the crystat on which tissue samples can be stored. As a vacuum pump above the helium, some of the Helia isotopes evaporates to steam, in the process of heat release, which maintains low liquid temperatures and superintulating materials of the shields around the liquid bath insulate the liquid and keep it cool. AnyThe crystats are complemented by a more liquid helium from storage deware and other crystat models are connected by a mechanical refrigerator that siphones a pair of helium, re -ending it again for a re -form in liquid form, in a closed cycle surgery. In addition to the colder helium isotopes in a special pot inside, multi -stage crystations can reach lower temperatures than conventional cyrostats by dry dilution or magnetic cooling.

Cloats can be found inside the magnetic resonance (MRI) machines used to maintain a superconducting magnet coil of superconducting wire in a superconducting state, so the conductor does not have electrical resistance. Bobbin is immersed in a liquid helium and the steam of this helium is repurbied in the construction of a closed cycle from the connected cooler. Cryostats are also used for slicing and storing tissue samples in medicine and portable crystats of this type may be inYapped from generators or inverters of vehicles to keep them cold for tissue transmission. Slicers can be cut as gently as one micrometer for examination under the microscope.

The most common use of frozen sections is for tests during operations. The reasons for this practice may be, if the tumor appears to have metastasized, any suspicion of metastases rushing to cryosition to confirm, and if so, the surgeon can stop surgery. Another use is reconnaissance operation and excision from the inner lesion can identify the cause of the patient's symptoms. Frozen cuts can also sometimes detect antigens with diseases that were masked in the usual formalin solutions. When dealing with the surgery of sentinel nodes, the surgeon for consumer dry -coded tumor tissue for benign or malignant verdict before deciding whether to further remove the lymph nodes.