摘要:
This invention is a storage device (cryocontainer) for the vitrification method of cryopreservation that uses shape memory materials to create a novel shape-shifting feature in which the relevant heat transfer zone of the cryocontainer can be thermally morphed between a shape conducive to biological specimen handling and to a shape conducive to rapid heat transfer. This feature utilizes the temperature induced phase transformation of shape memory materials. The temperature inducement occurs naturally within the normal temperature changes that occur during vitrification.
摘要:
It is demanded that packages for cryopreservation containers which can prevent the conventional cryopreservation containers stored at very low temperatures, namely −80 to −196° C., from being damaged and are excellent in heat sealability be developed. The present invention provides a package for a cryopreservation container comprising at least an adhesive fluoropolymer film. The package for a cryopreservation container according to the invention makes it possible to store blood, rare cells and vital tissues in a very low temperature environment without any damage to the container. Further, the sealing strength resulting from heat sealing after placing a cryopreservation container in the packages is very good and, therefore, liquid nitrogen can be inhibited from entering the inside and thus contamination with bacteria, viruses or the like contained in liquid nitrogen can be avoided and the package can be prevented from being broken by expansion of intruder liquid nitrogen on the occasion of thawing.
摘要:
A sample support (100, 101, 102, . . . ), in particular for cryopreservation of biological samples, is described and includes: a holder part (10) with a sample receiving chamber (11), a retaining device (12, 13) on which a sample can be disposed, and support connecting elements (14, 15) which are directed at opposite holder part ends (16, 17) and are formed to fit together so that a plurality of holder parts (16) can be put together. A sample store (200), which includes an assemblage of a large number of such sample supports, and a method for the cryopreservation of biological samples, are also described.
摘要:
A method and a device for the cryo-conservation of a hydrous sample, in particular biological sample, wherein the sample is introduced into a cavity of a container, remaining free space of the cavity if any is filled with a hydrous liquid, the cavity is closed in a liquid-tight manner and the container is held in a holding device, and the container together with the sample is cooled to a temperature below 251 K, preferably 173 K, for example by means of liquid nitrogen, propane or ethane, wherein the container and the holding device prevent an expansion of the cavity in volume. The selected cooling rate is sufficiently high so that a crystal formation of the freezing water is suppressed in favor of glass formation.
摘要:
The present invention provides devices and methods for the cryogenic storage of biological material. Devices of the invention are useful for storing material at a cryogenic temperature. The devices include a temperature chamber defined by a thermally-conductive container and at least one layer of thermal insulation surrounding the thermally-conductive container. Some embodiments utilize one or more heat sources thermally connected to the thermally conductive container. Other embodiments are arranged so that no net flow of heat occurs from the temperature chamber when the temperature chamber is at a set target temperature. Also provided are methods of using the devices.
摘要:
A method of preserving microbial cells is provided, comprising dispensing microbial cells into preservation medium to produce a microbial cell suspension, impregnating a swab with a predetermined amount of the microbial cell suspension, and desiccating the impregnated swab. In one embodiment, the swab comprises a first end and a second end, wherein the second end comprises a network of fibers. In another embodiment, the method further comprises the steps of attaching the first end of the desiccated swab to a cap, inserting the desiccated swab into a tubular container, and sealing the tubular container with the cap.
摘要:
A method for changing the temperature of a sample from an initial temperature via an intermediate temperature to a final temperature, one of the initial and final temperatures being above the freezing point of the sample and the other being below the freezing point is provided. The method is for changing the temperature of a sample having minimal dimension in each of two mutually perpendicular cross-sections exceeding 0.5 centimeters, and at least one of the cross-sections having an outer zone and an inner zone.
摘要:
A self-contained cell culture apparatus and method of use in which a cell culture may be stored frozen for an extended period, then thawed, incubated and grown in a closed system without additional processing or added constituents. The apparatus and method readily lend themselves to automated handling and analysis by MEMS devices, and find particular application in micro gravity and/or high radiation environments. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope of the claims.
摘要:
A pouch for cryo-preservation of staminal cells or similar blood components is described, comprising a main pouch (2) containing the substance (4) to be preserved and relative means (5, 6) for the communication with the outside, characterised in that it comprises in addition an external perfectly sealed secondary pouch (3) containing said main pouch (2) and said communication means (5, 6).
摘要:
This invention is directed to an efficient cryopreservation package desgin of harvested mammalian tissues and living cultured tissue equivalents made by in vitro technology. The invention involves immersing a mammalian tissue or cultured tissue equivalent in a cryoprotectant solution, agitating the cryoprotectant solution and the immersed tissue to achieve effective penetration of the cryoprotectant solution into the tissue, and then freezing the tissue at a very slow freezing rate. In the freezing step, extracellular ice formation is initiated by seeding. The cryopreserved tissue may be stored for indefinite periods of time prior to use. The cultured tissue equivalent is an in vitro model of the equivalent human tissue, such as skin or cornea, which, when retrieved from storage can be used for transplantation or implantation in vivo or for screening compounds in vitro.