A weighing system for medical applications may include a basin that has a base and a sloped sidewall that collectively form a bounded cavity with open top surface that receives and holds the material to be weighed. The basin may be free floating above the weighing device within a restricted range of travel. In some examples, the weighing system includes a thermal treatment device to adjust the temperature of the material in the basin. The rate at which heat is delivered to the basin may vary depending on the weight of the contents in the basin.

A chemical thermal pack is provided having a flexible liquid impermeable pouch, an endothermic/exothermic producing chemical, and a liquid permeable pouch. The flexible liquid impermeable pouch has a resealable closure edge and a scored tamper seal. There is one of an endothermic and an exothermic producing chemical. The liquid permeable pouch is contained within the liquid impermeable pouch and provides a cavity for containing the endothermic/exothermic producing chemical. A user breaches the scored tamper seal and inserts a fluid solvent within the liquid impermeable pouch and reseals the closure edge. The solvent is reactive with the chemical to impart one of an exothermic reaction and an endothermic reaction. A method is also provided.

A retainer with a closure mechanism not removable from the retainer is bonded to each of the air inlet openings of an inflatable convective thermal blanket. The bottom surface of the retainer is bonded to the blanket so that its orifice is in alignment with the opening into the blanket. The closure may be a flexible layer or sheet that is adhesively attached to the top surface of the retainer. An end portion of the flexible layer away from the orifice of the retainer may be press or die cut into the retainer so that the flexible layer is non-removably attached to the retainer when the user peels the releasably secured portion of the flexible layer away from the retainer to expose the air inlet opening. The closure can also be an extension of the retainer that is hingedly connected to the retainer so as to be able to be moved pivotally to cover the retainer. The closure has a configuration that allows it to be releasably secured to the retainer when it covers the orifice opening of the retainer.