Method of manufacturing disposable cold pack and related disposable cold pack containing urea and ammonium chloride

Abstract

Plastic sheet can be heat-sealed to form a water-tight envelope having an open top. A water-tight frangible container can be loaded into the envelope through the open top. The water-tight frangible container can contain a predetermined amount of water. A predetermined amount of urea can be loaded into the envelope through the open top. Separate from the loading of the urea, a predetermined amount of ammonium chloride can be loaded into the envelope through the open top. The relative proportions of the predetermined amount of urea, the predetermined amount of ammonium chloride, and the predetermined amount of water can be selected to provide a target cooling effect to a portion of a body to which cooling is to be applied. The open top of the envelope can be heat-sealed to form a water-tight outer pack.

Description

[0001] related application [0002] This application claims priority from U.S. Patent Application No.: 13 / 918,229. technical field [0003] The invention relates to an ice pack. [0004] Background technique [0005] Reusable ice packs are well known, however, due to their need to be frozen, and due to concerns about sterility and the need to reduce the spread of disease, these ice packs are not used in many clinical situations. [0006] Several types of disposable ice packs are also known, however, they suffer from disadvantages including poor manufacturability, complex design, and high unit cost. [0007] In addition, certain materials used in disposable ice packs, such as ammonium nitrate, may be controlled or monitored and difficult to obtain, and storage of large quantities of these materials suitable for large-scale production of disposable ice packs is potentially hazardous. [0008] Therefore, the prior art lacks a disposable ice pack that is easy to mass-produce...

AI Technical Summary

Problems solved by technology

[0004] Reusable ice packs are well known, however, due to their need to be frozen, and due to concerns about sterility and the need to reduce the spread of disease, these ice packs Not used in many clinical situations

[0005] Several types of disposable ice packs are also known, however, they are limited by disadvantages including poor manufacturability, complex design, and high unit cost

[0006]In addition, certain materials used in disposable ice packs, such as ammonium nitrate, may be regulated or monitored making them difficult to obtain, and large quantities of this material suitable for mass production of disposable ice packs Storage of these materials is potentially hazardous

[0007]Therefore, the prior art lacks a disposable ice pack that is easy to mass-produce and can be conveniently and safely used in various clinical situations

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