TW200522930A - A passive portable blood storage system - Google Patents

Abstract

A passive portable system and a method for storing blood are disclosed. The system comprises a sealable thermal isolation chamber which is preconditioned at a certain temperature for a predefined period of time. The thermal isolation chamber includes cavities of a phase change material which help to maintain the temperature of bags of human blood that are placed into the thermal isolation chamber for storage during transit. The thermal isolation chamber is surrounded by vacuum insulation panels and the vacuum insulation panels, encompassing the thermal isolation chamber, is placed into a durable carrying bag. The thermal isolation chamber is reusable along with the vacuum insulation panels and bag.

Description

200522930 V. Description of the invention (1) Technical field to which the invention belongs The specific embodiment of the invention relates to the portable storage of materials in a temperature range, such as for the storage of human blood in the field. More specifically, a specific embodiment of the present invention relates to a portable system that maintains a bag material filled with human blood without maintaining a predetermined temperature range for a long period of time without the need for a power source. Prior art Various materials are expected to be maintained at predetermined temperatures for different purposes. For example, sensitive materials such as human blood are usually stored in non-portable, electric refrigerated units to keep the blood at a temperature β and prevent the blood from deteriorating or becoming impossible. use. When the blood must be removed from a refrigerated unit and transported for field use (eg, military combat conditions, car crash victims, etc.), it is usually tied to an ice cube with or without ice (in other words, frozen water) In an isolated container. However, such a method of carrying and transporting generally causes the blood temperature to generate more than expected oscillations, and typically cannot maintain the blood temperature in an expected range and for a sufficiently long period of time. Other materials are also expected to be maintained at predetermined temperatures irrespective of conditions such as refrigeration or the like. As an alternative, a portable or semi-portable container with an internal active power in the container and a temperature regulating system for regulating temperature can be used. The active power system may include a battery or a fuel pack and a cooling system, which increases the complexity and weight of the container, and does not have a desired degree of trust (for example, the battery may be at a desired faster rate Undercharge

200522930 V. Description of Invention (2) Electricity). Another alternative is to use an external power source, such as a gasoline power generator or an external battery, which is inserted into a temperature regulating system of the container to regulate the temperature in the container. This requires the external power source to be transmitted with the container. It is needed to have a lightweight, highly reliable, portable container that maintains the temperature of the human blood bag for a relatively long period of time, so the blood can be placed for several hours after it is placed in the container, Be provided to the patient. The additional limitations and disadvantages of the conservative, traditional, and proposed approaches * are apparent in this field and are reminded by comparing the present invention with such a system before referring to the illustration. SUMMARY OF THE INVENTION The present invention resides in a closed material system. The blood is based on the method of the present invention. Most of the materials cover the human body. The embodiment of the degree and clarity of the material includes a portable system for storing materials such as human blood in a predetermined temperature range. The system includes a basic unit with a wall and an open side, in which a human blood bag is placed. The closing wall of the basic system contains a recess containing a phase change material. The system also contains an internal pocket containing a phase change material. The lid is adapted to the open side of the base unit to seal the base unit when the bag is stored. The system additionally includes a vacuum insulation material surrounding the unit and the lid, and an external transport of the vacuum insulation material. Another embodiment of the invention includes storage for human blood. The method includes presetting a thermally isolated chamber for a predetermined temperature period. The thermal insulation chamber includes a basic unit and a

Page 7 200522930 V. Description of the invention (3) Cover. The basic unit has a plurality of side walls and an open side. The closing wall of the base unit and the lid contain an internal cavity containing a phase change material that changes its phase at a predetermined storage temperature. The method also does not include placing at least one human blood bag in the base unit. The method further includes placing a lid on the open side of the base unit to seal the base unit. The method also includes surrounding the sealed base unit with a vacuum insulation material, surrounding the sealed base unit with the insulation material, and placing it in a transport bag. These and other advantages, as well as the novel features of the present invention, will be fully understood from the subsequent description and illustrations as well as the details of a described embodiment. Embodiment 1 Figure 1 describes an exemplary embodiment of a portable system 100 for storing materials, such as human blood or other temperature-sensitive materials, in a given temperature range during a period of time. . The embodiment of Fig. 1 shows different perspectives of the invention, and the system 100-generally includes a basic unit 110, which has four side walls and a bottom side wall. The base unit 1 10 also includes a removable or semi-removable cover 12 for sealing the base unit 1 10. The system 100 also includes a vacuum insulation plate (or material) 130 to surround and assist in isolating the base unit 110 and the cover 120. The vacuum insulation plate 130 has an R value of 30 and is assembled to allow a top plate to open to provide access to the sealed base unit 110, which is consistent with embodiments of the present invention. In one embodiment, the temperature stability of the system is enhanced by the accessory gear of the isolating plate 130, which is located at the intersection of the plates 130 with each other, as if formed by the plate 130 Surround the corner. In these cross

Page 8 200522930 V. Description of the invention (4) Attachment at the fork The overlapping gear of the gear or plate 130 can reduce any edge loss from the plate 130, and thereby maintain the uniformity of the 100 throughout the system Hook for temperature stability. Consistent with the embodiment of the present invention, the base unit 110 and the lid 120 have internal recesses containing a phase change material. The phase change material is a gel-based material that melts and solidifies at a specific temperature, and thus has the ability to store or release energy. Therefore, this phase change material can be used to maintain or adjust the temperature of other materials, such as blood. Consistent with the embodiments of the present invention, the phase change material is designed to change the phase (in other words, melt or solidify) at about 4 degrees, but its phase change material can also be used for other applications. Other temperatures change phase. The use of phase change materials that change phase at about 4 degrees Celsius provides an example of the ideal temperature for storing human blood bags. The basic unit 110 and the cover 120 form a movable thermal insulation chamber (thermal i s ο 1 a t i ο n c h a m b e r, T I C). Consistent with embodiments of the present invention, this basic unit can maintain at least 4 standard units of blood (in other words, bags). In one embodiment, the thermal isolation chamber (TIC) is usable in environments where pressure may be changed, such as military operations, where the system 100 can also be deployed under higher altitude rainwater . In such an environment, the equilibrium pressure about the thermal insulation chamber (T I C) is quite t. In such an embodiment, one or more equilibrium windows 1 2 2 are provided by the thermally insulated chamber (T I C) to allow equilibrium with external atmospheric pressure. The window 122 can be a small air window with a Tyvek (or other suitable material) covering it, which can be connected to the external atmospheric pressure.

200522930 V. Description of the invention (5) Force gas exchange, but avoid liquid exchange. Any suitable window system that allows for a balance between the thermally isolated chamber (T I C) and the external atmospheric pressure is considered. By way of example only, an equilibrium window 1 2 2 may be provided at the top and bottom portions of the thermally insulated chamber (T I C). The system 100 also includes a durable shipping bag 140 to maintain a sealed base unit surrounded by the vacuum insulation plate 130. The shipping bag 140 can be made of durable nylon and includes a zipper 145 and an adjustable belt 146, which is consistent with the embodiment of the present invention. Other perishable medical supplies can be stored well in the system 100, which is consistent with many different embodiments of the present invention. Fig. 2 is a flowchart of an embodiment of a blood storage method 200 using the system 100 of Fig. 1 and is consistent with many different points of the invention. In step 210, a thermal insulation chamber is adjusted in advance at a predetermined temperature for a predetermined period of time. The thermally insulated chamber includes a base unit and a cover, and the base unit has a plurality of closed walls and an open side. The closing wall of the basic unit and the lid contain an internal cavity containing a phase change material that changes phase around a predetermined storage temperature. In step 220, at least one blood bag system is placed in the base unit. In step 230, the cover is placed on the open side of the base unit to seal the base unit. In step 240, the sealed basic unit is surrounded by a vacuum insulation material t. In step 250, the sealed base unit surrounded by the insulation material is placed in a transport bag. It is consistent with the embodiment of the present invention. The base unit 1 1 0 and the lid 1 2 0 are for thermal conditions before being integrated with the vacuum insulation plate 1 3 0 and the bag 1 4 0

Page 10 200522930 V. Description of the invention (6) The application shall be 4 hours at 6 degrees Celsius in advance, and 4 hours at 2 degrees Celsius for cold applications. The internal recesses of the base unit 110 and the cover 120 also contain thermally stents (not shown), which are used to help distribute conductivity across the walls of the base unit u0 and the cover 12o: It is consistent with the embodiments of the present invention. Similarly, a triggering medium (not a no) is used in the recesses of the basic unit and the cover to simulate a phase change material that changes phase at the required temperature. The system 100 is a passive system, which does not need to be like a battery: a fuel pack, or an internal or external source of power for a generator. Similarly, System 100 does not require any type of active refrigeration system. Fig. 3 is an example of Fig. 3 0, which describes the system of Fig. 1 Q, using the temperature adjustment performance of the method 2 of Fig. 2 for temperature adjustment. In this example used in a thermal environment, as shown in FIG. 300, the human blood bag system is maintained at a constant temperature (in a continuous environment of Fahrenheit + 0 ° C (+ 40 ° C)). (Approximately 4 degrees Celsius) for more than 60 hours, and kept properly frozen at 80 hours. Tian Figure 4 depicts an example of the temperature regulation performance of the system 100 in the figure when using the method of Figure 2 in a cold environment. Consistent with each example of the present invention, as shown in FIG. 4 0, in a continuous minus two & degree (-23 degrees Celsius) environment, the human blood bag is tied to a fixed temperature & (Degrees) for more than 60 hours, and after 1 hour, the temperature should be above 1 degree Celsius. / 、, The succinctness of the set of Xing Xing, the system uuu in the ambient temperature range of -20 degrees Celsius + 40. 5 degrees, at least 48 hours & 200522930 V. Description of the invention ( 7) Period, transport at least 4 units of red blood packs (in other words, bags), and keep the blood content between + 1 ° C and + 10 ° C. Figure 5 describes the first picture system used in the field in a combat state, which is consistent with the embodiment of the present invention. In Figure 5, a military medical staff 5 10 manages a pint (p i n t) of blood 5 1 5 of an injured soldier 5 2 0. The portable system 100 can be seen lying on the side of the wounded soldier 520. Consistent with the embodiment of the present invention, the external physical size of the system 100 is approximately 10 inches long, 9 inches wide and 10 inches deep. The dimensions of the interior (in other words 1 the interior of the thermal insulation chamber (T I C) basic unit 1 10) are approximately 6 1 long, 5 inches wide and 6 inches deep. Other sizes are suitable for other specific applications and can be considered here. In summary, a combat portable, passive system can safely store blood and other medical supplies for a long time in a climate range from very cold to very high temperatures. This layered design (in other words, a thermally isolated chamber (T I C), vacuum isolation, bag) and the balancing mechanism achieved by this layered design reduces the risk of overall results failing. Although the present invention has been described with reference to specific embodiments, it should be understood that with these technologies in the field, different changes can be made, and equivalents that do not depart from the viewpoint of the present invention can also be substituted. In addition, without departing from the teachings of the invention, many modifications may be made to adapt to a particular situation or material. Therefore, it is intended that the present invention is not limited to this specifically published embodiment, and that the present invention will include all embodiments to which the scope of this additional patent application is applied.

Page 12 200522930 Brief Description of Drawings Figure 1 illustrates an example of the implementation of a portable system for storing human blood, which is consistent with many different perspectives of the present invention. Figure 2 is a flowchart of an embodiment of a blood storage method using the system of Figure 1, which is consistent with many different perspectives of the present invention. -Figure 3 is an exemplary diagram illustrating the temperature regulation performance of the system in Figure 1 when the method of Figure 2 is used in a thermal environment, which is consistent with the embodiment of the present invention. Fig. 4 is an exemplary diagram illustrating the temperature adjustment performance of the system in Fig. 1 when the method of Fig. 2 is used in a cold environment, which is consistent with the embodiment of the present invention. The f 5 picture is the first picture system used in the field in a combat state, which is consistent with the embodiment of the present invention. Key component symbol description PCM phase change material TIC provides isolation chamber 100 Portable system 110 Basic unit 120 Lid 122 Balance window 130 Vacuum isolation plate 135 Top plate 140 Transport «% / Bag 145 Zipper 146 Belt 2 0 0 Use system 1 0 Example flow chart of 0 method for storing blood «0 System 1 0 0 Using method 2 0 0 Demonstration diagram of temperature adjustment performance 0 In a cold environment, using method 2 0 0 Demonstration diagram of system 1 0 0 temperature adjustment performance 510 military medical personnel 5 1 5 blood 5 2 0 wounded soldier

Page 13

Claims (1)

200522930 VI. Scope of patent application 1. A portable system for storing human blood, the system includes: a basic unit having a plurality of closed walls and an open side, and a human blood bag is placed in the basic unit, and wherein The closing wall of the basic unit includes an internal cavity containing a phase change material; a cover including an internal cavity containing the phase change material, and wherein the cover is adapted to the open side of the basic unit to The base unit is sealed when the human blood bag is stored; a vacuum insulation material surrounding the base unit and the lid; and an external transport bag surrounding the vacuum insulation material. 2. The system of item 1 in the scope of patent application, wherein the basic unit and the cover form a thermally insulated chamber. 3. A method for storing human blood, the method comprising: adjusting a thermal insulation chamber in advance under a predetermined temperature condition of a predetermined time period, the thermal insulation chamber including a basic unit and a lid, The basic unit has a plurality of closed walls and an open side, and wherein the closed wall and the lid of the basic unit include an internal cavity containing a phase change material that changes phase near a predetermined storage temperature; at least one human blood bag is placed To the base unit; placing the cover on the open side of the base unit to seal the base unit; widely surrounding the sealed base unit with a vacuum insulation material; and placing the sealed base unit surrounded by the insulation material in In a shipping bag 0 Page 14