Ultra-fast cooling system and methods of use

Patent metadata

Field	Value
Publication number	US-11937596-B2
Application number	US-201917045153-A
Country	US
Kind code	B2
Filing date	Apr 5, 2019
Priority date	Apr 5, 2018
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

An improved ultra-fast cooling system is disclosed for cryopreservation of biomaterials. The ultra-fast cooling system is designed to uniformly vitrify or partially vitrify biomaterials, including but not limited to, human biomaterials, proteins, peptides, cells, stem cells, antibodies, neurons, human tissue, organs, cornea, skin, retina, eggs, sperm, embryos, body fluids, blood, serum, lymph fluid, animal tissue, plant biomaterials, plant tissue, germ plasma, pollen, plant sap, and bioengineered tissue, without cryoprotectants or with a low concentration of cryoprotectants. Cooling rates are sufficient to uniformly cryopreserve biomaterials, and can be used in diagnostic cytology and biological cryofixation applications. Other materials also can be cooled uniformly, such as inorganic materials for processing.

First claim

What is claimed is:

1. A cooling apparatus comprising:
a manifold two-phase blade-jet assembly unit comprising:
a manifold;
a plurality of interior device blade units;
a plurality of exterior device blade units; and

a sample holder system,
wherein the cooling apparatus is configured to form a plurality of liquid cryogen jets and a plurality of vapor cryogen jets.

2. The cooling apparatus of claim 1 , further comprising a source of a liquid cryogen and a source of a vapor cryogen.

3. The cooling apparatus of claim 1 , wherein the plurality of interior device blade units form a plurality of inlet ports.

4. The cooling apparatus of claim 1 , wherein the plurality of interior device blade units form a plurality of exit ports.

5. The cooling apparatus of claim 1 , wherein the liquid cryogen jets and the vapor cryogen jets are interlaced position-wise, such that each liquid cryogen jet is flanked on each side by a vapor cryogen jet.

6. The cooling apparatus of claim 1 , wherein the interior device blade units and exterior device blade units are comprised of stainless steel, brass, copper, or aluminum.

7. The cooling apparatus of claim 1 , wherein the sample holder system comprises a material to be subjected to cooling.

8. The cooling apparatus of claim 7 , wherein the material is comprised of multiple masses and compositions.

9. The cooling apparatus of claim 1 , wherein the apparatus comprises multiple sample holders within the sample holder system.

10. The cooling apparatus of claim 1 , wherein the sample holder system comprises at least one of a sample straw unit, a sample button unit, a sample straw carriage unit, a sample button carriage unit, a combination of sample straw and button carriage unit, and a sample holder-carriage unit.

11. The cooling apparatus of claim 10 , for the purpose of ultra-fast cooling of one or more thin biomaterial tissue samples and for maintaining sample purity, wherein the sample holder system includes a sample button unit that comprises a closed container that has a removable lid, and at least one thin window with high thermal conductivity over the temperature range of cooling, and wherein the said biomaterial tissue samples can be maintained in close thermal contact with the thin window.

12. The cooling apparatus of claim 10 , for the purpose of ultra-fast cooling a one or more small units of biomaterial samples and for maintaining sample purity, wherein the sample holder system includes a sample straw unit that comprises a closed container that has removable end caps, and at least one thin window with high thermal conductivity over the temperature range of cooling, and wherein the said small units of biomaterial samples can be maintained in close thermal contact with said thin window.

13. The cooling apparatus of claim 1 wherein the apparatus comprises a plurality of manifold two-phase blade-jet assembly units.

14. A method of cooling a material, the method comprising the steps of:
providing the cooling apparatus of claim 1 ;
loading the material to be cooled into the sample holder system;
activating an exhaust system for a vapor cryogen;
inserting the sample holder system under a plurality of liquid cryogen jets and a plurality of vapor cryogen jets generated by the manifold two-phase blade-jet assembly unit; and
cooling the material.

15. The method of claim 14 , further comprising removing the sample holder system that has been cooled from the cooling apparatus.

16. The method of claim 14 , further comprising storing the sample holder system that has been cooled.

17. The method of claim 14 , further comprising sealing each loaded individual sample holder.

18. The method of claim 14 , wherein a rate of cooling is sufficient to vitrify the material.

19. The method of claim 14 , wherein a rate of cooling is sufficient to partially vitrify the material.

20. The method of claim 14 , wherein a rate of cooling is sufficient to cryopreserve the material.

21. The method of claim 14 , wherein the material is cryopreserved in the absence of a cryoprotective agent.

22. The method of claim 14 , where the material is a biomaterial.

23. The method of claim 22 , wherein the biomaterial is selected from the group comprising human biomaterials, proteins, peptides, cells, stem cells, antibodies, neurons, human tissue, organs, cornea, skin, retina, eggs, sperm, embryos, body fluids, blood, serum, lymph fluid, animal tissue, plant biomaterials, plant tissue, germ plasma, pollen, plant sap, and bioengineered tissue.

24. The method of claim 22 , wherein the biomaterial is selected from the group comprising human biomaterials, proteins, peptides, cells, stem cells, antibodies, neurons, human tissue, organs, cornea, skin, retina, eggs, sperm, embryos, body fluids, blood, serum, lymph fluid, animal tissue, plant biomaterials, plant tissue, germ plasma, pollen, plant sap, and bioengineered tissue in the presence of at least one cryoprotective agent (CPA).

25. The method of claim 22 , wherein a cooling rate of the biomaterial is about 10 3 K/min to about 10 6 K/min.

26. The method of claim 22 , wherein an area of the biomaterial is about 10 cm×10 cm.

27. The method of claim 22 , wherein an area of the biomaterial about 10 −4 cm 2 to about 1000 cm 2 .

28. The method of claim 14 , wherein the material has a mass between about 1 nanogram and about 10 grams.

29. The method of claim 14 , where the material is an inorganic material.

30. The method of claim 14 , wherein the method of cooling is for use in diagnostic cytology or tissue fixation.

31. The cooling apparatus of claim 4 , wherein a first portion of the plurality of exit ports are configured to form the plurality of liquid cryogen jets, and a second portion of the plurality of exit ports are configured to form the plurality of vapor cryogen jets.

Assignees

• Han Xu
• White Henry W
• Koulen Peter
• Univ Missouri
• Cryocrate Llc

Inventors

• Han Xu
• White Henry W
• Koulen Peter

Classifications

• A01N1/147

  Carriers for immersion in cryogenic fluid for slow freezing or vitrification · CPC title

• A01N1/145

  Stationary or portable vessels generating cryogenic temperatures, e.g. liquid nitrogen baths · CPC title

• A01N1/144 Primary

  for temperature control, e.g. refrigerators or freeze-drying apparatus · CPC title

• A01N1/0252 Primary

  Human Necessities · mapped topic

• F25B19/02

  using fluid jet, e.g. of steam {(F25B19/005 takes precedence)} · CPC title