Navigation Links
Rice U. parlays sun's saving grace into autoclave
Date:5/3/2011

Rice University senior engineering students are using the sun to power an autoclave that sterilizes medical instruments and help solve a long-standing health issue for developing countries.

The student's used Capteur Soleil, a device created decades ago by French inventor Jean Boubour to capture the energy of the sun in places where electricity -- or fuel of any kind -- is hard to get. In attaching an insulated box containing the autoclave, the students transform the device into a potential lifesaver.

The Capteur Soleil, which sits outside Rice's Oshman Engineering Design Kitchen, looks something like an ultramodern lawn swing. Its spine is a steel A-frame, and a bed of curved mirrors beneath the frame produces steam by focusing sunlight along a steel tube at the frame's apex. Rather than pump steam directly into the autoclave, the Rice team's big idea was to use the steam to heat a custom-designed conductive hotplate.

"It basically becomes a stovetop, and you can heat anything you need to," said Sam Major, a member of the team with seniors Daniel Rist, David Luker and William Dunk, all mechanical engineering students. "As long as the autoclave reaches 121 Celsius for 30 minutes (the standard set by the Centers for Disease Control and Prevention), everything should be sterile, and we've found we're able to do that pretty easily."

He said one person could easily adjust the Capteur Soleil by ratcheting up the back leg to align the mirrors with the sun. Within half an hour of receiving strong sunlight, the Capteur Soleil will begin to produce steam, which will in turn heat the patterned hotplate and then the standard-issue, FDA-approved autoclave. With good midday sun, Major said, it takes 40 minutes to an hour to begin significant heating of the autoclave.

The autoclave, which looks like a tricked-out pressure cooker, has a steamer basket inside. "We put about an inch of water inside, followed by the basket with the tools and syringes," Major said. "We've used some biological spores from a test kit, steamed them, and then incubated them for 24 hours and they came back negative for biological growth. That means we killed whatever was in there."

The autoclave, tucked inside a plywood frame, is wrapped in silicon-based Thermablok insulation, which has the highest R-value of any known material and is a spinoff from NASA research into thermal protection for the space shuttle. "This thin layer does most of the work," Major said. "We used standard pink insulation around the inside just to make the box stronger."

"This is really the latest iteration of a much larger project," said Doug Schuler, the team's faculty adviser and an associate professor of business and public policy at Rice's Jones Graduate School of Business. "We already have a version of the Capteur Soleil being used in Haiti for cooking, but we felt it could do more."


'/>"/>

Contact: David Ruth
druth@rice.edu
713-348-6327
Rice University
Source:Eurekalert

Related medicine news :

1. Daily Sunscreen Use Does Protect from Melanoma, Study Finds
2. Sunscreen Concerns Unfounded, Experts Say
3. As Summer Heats Up, Glacier Creme Debuts the Ultimate in Natural Sunscreen: 'Naked Protection' with Zinc Oxide
4. Sunset Marina and Resort on Tennessee's Dale Hollow Lake Provides Affordable Houseboat Vacations for Price-Conscious Families
5. COPPERTONE(R) Solar Research Center Unveils Studies on Efficacy of Topical Antioxidants in Sunscreens at 2010 Annual Meeting of The American Academy of Dermatology
6. Tired of Snow, Sleet, and Stress? Join Deepak Chopra for a Week-Long Meditation Retreat this March in Florida's Warm Sunshine
7. Novel program is saving newborns’ lives in developing countries
8. High-Deductible Health Plans Bring Equal Savings to All: Study
9. Genome Scans May Reveal Life-Saving Alternatives for Cancer Patients
10. FDA approval of brain aneurysm device gives Jefferson neurosurgeons another life-saving tool
11. Lifesaving antibiotics face doubtful future
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... ... June 26, 2016 , ... Many ... been diagnosed with endometriosis. These women need a treatment plan to not only ... approach that can help for preservation of fertility and ultimately achieving a pregnancy. ...
(Date:6/25/2016)... ... ... First Choice Emergency Room , the largest network of independent freestanding emergency ... its new Mesquite-Samuell Farm facility. , “We are pleased to announce Dr. Ogunleye ... M. Muzzarelli, Executive Medical Director of First Choice Emergency Room. , Dr. Ogunleye ...
(Date:6/24/2016)... CA (PRWEB) , ... June 24, 2016 , ... A ... procedures that most people are unfamiliar with. The article goes on to state that ... but also many of these less common operations such as calf and cheek reduction. ...
(Date:6/24/2016)... ... June 24, 2016 , ... Global law firm Greenberg Traurig, ... Elite. The attorneys chosen by their peers for this recognition are considered among the ... Traurig Shareholders received special honors as members of this year’s Legal Elite Hall of ...
(Date:6/24/2016)... ... June 24, 2016 , ... ... Clinical Decision Making in Emergency Medicine conference in Ponte Vedra Beach, FL. The ... published in Emergency Medicine Practice and Pediatric Emergency Medicine Practice. , ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... Jazz Pharmaceuticals plc (Nasdaq: JAZZ ... Antitrust Improvements Act of 1976, as amended ("HSR"), with ... ("Celator"; Nasdaq: CPXX ) expired effective June ... As previously announced on May 31, 2016, Jazz ... under which Jazz Pharmaceuticals has commenced a tender offer ...
(Date:6/26/2016)... VEGAS , June 26, 2016 ... to value-based care operating models within the health care ... enable greater financial efficiency , Deloitte offers a ... the key business issues impacting efficient cost optimization: labor ... , These services facilitate better outcomes and better ...
(Date:6/24/2016)... OAKLAND, N.J. , June 24, 2016 /PRNewswire/ ... in the design, development and manufacturing of collagen ... and regeneration announced today that Bill Messer ... Sales and Marketing to further leverage the growing ... surgery medical devices. Bill joins the ...
Breaking Medicine Technology: