Temperature management systems
Inventors
Kulstad, Erik • Drassler, Robin • Shanley, Patrick • Naiman, Melissa • Garrett, Michael C. • Garrett, JR., Frank E.
Assignees
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Publication Number
US-10398590-B2
Publication Date
2019-09-03
Expiration Date
Abstract
Systems and methods for managing patient temperature are disclosed. Temperature management systems that are suitable for an out-of-hospital setting are disclosed. Temperature management systems having a low power requirement are disclosed. Temperature management systems that include a disposable, single-use reservoir are disclosed.
Core Innovation
The invention provides a temperature management system for an out-of-hospital setting that manages a subject’s core body temperature using an esophageal heat transfer device. The esophageal heat transfer device includes at least one lumen that provides a flow path for a heat transfer medium. A reservoir stores the heat transfer medium and is coupled to a portable heat exchanger that regulates the temperature of the heat transfer medium by cooling or warming.
The system specifies that the portable heat exchanger consumes less than 500 Watts and is configured to achieve a cooling rate of 1° C./hour of a subject having a mass of about 75 kg in an out-of-hospital setting. A coupling adapter connects the reservoir to the portable exchanger and includes a compression seal and a lever. The lever moves along a partially circumferential path about the compression seal to tighten the compression seal when coupling.
In a method aspect, the invention manages core body temperature of a patient by carrying a portable heat exchanger, a disposable reservoir, and an esophageal heat transfer device to the patient in an out-of-hospital setting. The method attaches the disposable reservoir to the portable heat exchanger via the adapter with the compression seal and lever, connects the portable heat exchanger to the esophageal heat transfer device to create a flow path from the disposable reservoir to the esophageal heat transfer device, inserts the esophageal heat transfer device into the patient, and initiates flow of the heat transfer medium.
Claims Coverage
The document contains two independent claims directed to a temperature management system and a method of managing core body temperature. The independent claims share a common system architecture centered on an esophageal heat transfer device, a reservoir for a heat transfer medium, and a portable heat exchanger with an adapter that includes a compression seal tightened by a lever moving along a partially circumferential path. The system claim additionally specifies a performance constraint for portable heat exchanger power relative to cooling rate for a subject mass of about 75 kg in an out-of-hospital setting.
Esophageal lumen flow path with reservoir and portable heat exchanger in out-of-hospital setting
A temperature management system comprising an esophageal heat transfer device including at least one lumen providing a flow path for a heat transfer medium; a reservoir for storing the heat transfer medium; and a portable heat exchanger configured to regulate temperature of the heat transfer medium in an out-of-hospital setting.
Low-power portable heat exchanger cooling rate for ~75 kg subject
The portable heat exchanger consumes less than 500 Watts to achieve a cooling rate of 1° C./hour of a subject having a mass of about 75 kg in an out-of-hospital setting.
Adapter with compression seal and partially circumferential lever tightening
An adapter for coupling the reservoir to the portable exchanger, wherein the adapter includes a compression seal and a lever for loosing and tightening the compression seal, wherein the lever is configured to move along a partially circumferential path about the compression seal to tighten the compression seal when coupling the reservoir to the adapter.
Portable system carried to patient with reservoir attachment, esophageal insertion, and initiating flow
A method of managing core body temperature comprising carrying a portable heat exchanger, a disposable reservoir, and an esophageal heat transfer device to a patient in an out-of-hospital setting; attaching the disposable reservoir containing a heat transfer medium to the portable heat exchanger via an adapter including a compression seal and a lever configured to move along a partially circumferential path about the compression seal to tighten the compression seal when coupling; connecting the portable heat exchanger to the esophageal heat transfer device to create a flow path from the disposable reservoir to the esophageal heat transfer device; inserting the esophageal heat transfer device into the patient; and initiating flow of the heat transfer medium.
Overall, the independent claim coverage centers on using an esophageal heat transfer device with a heat transfer medium flow path, coupled to a portable heat exchanger and disposable reservoir via an adapter having a compression seal tightened by a lever that moves along a partially circumferential path. The system claim further adds a low-power requirement (less than 500 Watts) tied to achieving a cooling rate of 1° C./hour for a subject mass of about 75 kg in an out-of-hospital setting, while the method claim recites the sequence of carrying the components, attaching the reservoir via the lever/compression seal adapter, inserting the esophageal device, and initiating flow.
Stated Advantages
Documented Applications
No documented applications found
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