LOW FLOW BLOOD AND IV FLUID WARMER

低流量血液和静脉输液加温器

• 批准号: 6071521
• 负责人: KENNETH L CARR
• 金额: $ 10.38万
• 依托单位: MICROWAVE MEDICAL SYSTEMS, INC.
• 依托单位国家: 美国
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-05-15 至 2000-11-14
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6071521
• 关键词: biomedical equipment development; clinical biomedical equipment; fluid flow; heat; hospital equipment /supply; intravenous administration; microwave radiation; portable biomedical equipment; temperature; thermometry

In 1989, transfusions of one or two units of blood at low flow rates (less than 25ml/min) accounted for more than 60% of the 3.2 million U.S. patients who received a total of 12.1 million units of red blood cells. A warming device that could deliver fluids, including blood, at normothermic temperature at low flow rates would prove useful for the prevention of hypothermia, particularly in neonatal and pediatric patients for whom low flow rate infusions and transfusions are the norm. The long-term objective of this proposal is to develop a warming device capable of delivering intravenous fluids and blood at normothermic temperatures at low flow rates consistent with neonatal and pediatric use. The innovative aspects of this device are that it will be small (less than 147cm3), lightweight (approximately 113g), and will have a small priming volume (less than 1.4ml). More important, this device will be designed to have no supply voltages in the heating cavity, thereby allowing the device to be located very close to the patient. This will substantially reduce patient-line cooling, yet allow more convenience of use compared with devices which are water-jacketed right up to the IV site. PROPOSED COMMERCIAL APPLICATIONS: A warmer that could safely deliver fluids at normothermic temperature at low flow rates would prove useful in the prevention of hypothermia, particularly in small patients. To accomplish this, the warming device should be located in close proximity to the patient. Commercial acceptance of such a device is assured.

1989年，在低流速（低于25 ml/min）下输注1或2个单位的血液占美国320万患者的60%以上，这些患者共接受了1210万单位的红细胞。 可以在正常体温下以低流速输送流体（包括血液）的加温装置将被证明对于预防体温过低是有用的，特别是对于低流速输注和输血是常态的新生儿和儿科患者。本提案的长期目标是开发一种加温装置，能够在正常温度下以与新生儿和儿科使用一致的低流速输送静脉内液体和血液。该器械的创新之处在于其体积小（小于147 cm 3）、重量轻（约113 g）且预充体积小（小于1.4 ml）。更重要的是，该设备将被设计为在加热腔中没有电源电压，从而允许设备非常靠近患者定位。这将大大减少患者管路的冷却，但与一直到IV部位都有水套的器械相比，使用起来更加方便。拟议的商业应用：一种可以在正常体温下以低流速安全输送液体的加温器将被证明在预防体温过低方面是有用的，特别是在小病人中。为了实现这一点，加温装置应位于患者附近。这样的设备的商业接受是有保证的。