Environmental Control Unit with Integral Thermal Storage

2014 ◽  
Author(s):  
Michael C. Ellis ◽  
Ryan McDevitt
Keyword(s):  
Environmental Control ◽  
Control Unit ◽  
Thermal Storage

scholarly journals A Paradigm Shift in Critical Care Infrastructure in Complex Settings: Evaluating an Ultraportable Operating Room to Improve Field Surgical Safety

2021 ◽  
Vol 186 (Supplement_1) ◽  
pp. 295-299
Author(s):  
Debbie L Teodorescu ◽  
Stephen Okajima ◽  
Asad Moten ◽  
Mike H M Teodorescu ◽  
Majed El Hechi ◽  
...  
Keyword(s):  
Operating Room ◽  
In Silico ◽  
Environmental Control ◽  
External Environment ◽  
Control Unit ◽  
Mortality And Morbidity ◽  
Particle Count ◽  
Surgical Safety ◽  
Surgical Field ◽  
Complex Settings

ABSTRACT Introduction Scarcity of operating rooms and personal protective equipment in far-forward field settings make surgical infections a potential concern for combat mortality and morbidity. Surgical and transport personnel also face infectious risks from bodily fluid exposures. Our study aimed to describe the serial, proof-of-concept testing of the SurgiBox technology: an inflatable sterile environment that addresses the aforementioned problems, fits on gurneys and backpacks, and drapes over incisions. Materials and Methods The SurgiBox environmental control unit and inflatable enclosure were optimized over five generations based on iterative feedback from stakeholders experienced in surgery in austere settings. The airflow system was developed by analytic modeling, verified through in silico modeling in SOLIDWORKS, and confirmed with prototype smoke-trail checking. Particulate counts evaluated the enclosure’s ability to control and mitigate users’ exposures to potentially infectious contaminants from the surgical field in various settings. SurgiBox enclosures were setup over a mannequin’s torso, in a configuration and position for either thoracic or abdominal surgery. A particle counter was serially positioned in sternotomy and laparotomy positions, as well as bilateral flank positions. This setup was repeated with open ports exposing the enclosure to the external environment. To simulate stress scenarios, sampling was repeated with enclosure measurements during an increase in external particulate concentration. Results The airflow technology effectively kept contaminants away from the incision and maintained a pressure differential to reduce particle entry. Benchtop testing demonstrated that even when ports were opened or the external environment had high contaminant burden, the enclosed surgical field consistently registered 0 particle count in all positions. Time from kit opening to incision averaged 54.5 seconds, with the rate-limiting step being connecting the environmental control unit to the enclosure. The portable kit weighted 5.9 lbs. Conclusions Analytic, in silico, and mechanical airflow modeling and benchtop testing have helped to quantify the SurgiBox system’s reliability in creating and maintaining an operating room-quality surgical field within the enclosure as well as protecting the surgical team outside the enclosure. More recent and ongoing work has focused on specifying optimal use settings in the casualty chain of care, expanding support for circumferential procedures, automating airflow control, and accelerating system setup. SurgiBox’s ultimate goal is to take timely, safe surgery to patients in even the most austere of settings.

THERMOELECTRIC ENVIRONMENTAL CONTROL UNIT

1965 ◽  
Author(s):  
R. E. Stillwagon
Keyword(s):  
Environmental Control ◽  
Control Unit

Exploring environmental control unit use in the age group 10-20 years

2006 ◽  
Vol 13 (11) ◽  
pp. 511-516 ◽  
Author(s):  
SN Paul ◽  
AO Frank ◽  
RS Hanspal ◽  
R Groves
Keyword(s):  
Environmental Control ◽  
Control Unit ◽  
Age Group ◽  
Group 10

THERMOELECTRIC ENVIRONMENTAL CONTROL UNIT

1965 ◽  
Author(s):  
G. D. Hudelson ◽  
G. K. Gable ◽  
A. A. Beck
Keyword(s):  
Environmental Control ◽  
Control Unit

A SIMPLE APPROACH TO IMPLEMENTING AN ENVIRONMENTAL CONTROL UNIT FOR THE DISABLED

2007 ◽  
Vol 19 (01) ◽  
pp. 19-26
Author(s):  
Mu-Chun Su ◽  
Chee-Yuen Tew ◽  
Li-Yen Sun ◽  
Jun-Yi Lu ◽  
Hsiang-Chih Tsai
Keyword(s):  
Environmental Control ◽  
Low Cost ◽  
Control Unit ◽  
Disabled Persons ◽  
Consumer Electronics ◽  
Phone Call ◽  
Disabled People ◽  
Home Environments ◽  
Control Units ◽  
The Disabled

Environmental control units play a role in enabling disabled people to carry out routine and repetitive tasks (e.g. watching TV, making a phone call, etc.) in their home environments. Unfortunately, most commercially available environmental control units are either too expensive or they require the disabled persons' home environments to be remodelled. In this paper we report the development of a low-cost environmental control unit which enables disabled people to control mostly existing consumer electronics with an infrared remote control functionality. Finally, we use a simple scenario to evaluate the performance of the proposed environmental control unit.

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