HOME >> MEDICINE >> NEWS
Noise-immune stethoscope helps medics hear vital signs in loud environments

November 27, 2006--A new type of stethoscope enables doctors to hear the sounds of the body in extremely loud situations, such as during the transportation of wounded soldiers in Blackhawk helicopters. Using ultrasound technology, the kind used to generate images of internal organs, muscles and unborn fetuses, the new stethoscope design will be presented later this week at the Fourth Joint Meeting of the Acoustical Society of American and the Acoustical Society of Japan, which will be held at the Sheraton Waikiki and Royal Hawaiian Hotels in Honolulu, Hawaii.

Researchers at Active Signal Technologies, Inc., of Linthicum Heights, Md., in collaboration with the U.S. Army Aeromedical Research Laboratory (USAARL) in Fort Rucker, Ala., have developed an ultrasound stethoscope that is nearly impervious to loud noise and is capable of making accurate readings at noise levels up to 120 decibels, similar to the volume experienced at the front row of a rock concert.

Current acoustic stethoscope technology picks up and amplifies vibrations that let doctors hear the heart and lungs. These models become difficult to use effectively around 80 decibels, a noise level comparable to an alarm clock or a busy city street. When noise levels reach 90 decibels, these types of stethoscopes are rendered useless. Modern electronic stethoscopes have raised the maximum tolerable noise level to 90 decibels to 95 decibels by replacing the ear pieces with loudspeaker inserts that provide a better seal with the ear canal and replacing the tubing with electrical cables that do not pick up acoustic noise.

The challenge to build a better stethoscope originated from the Army's Small Business Innovation Research program. For soldiers wounded in combat, the first hour after sustaining an injury is known as the "critical hour," when diagnoses and emergency treatment must take place to give them the best chance of recovery. These soldiers are often transported by helicopter,
'"/>

Contact: Turner Brinton
tbrinton@aip.org
301-209-3136
American Institute of Physics
28-Nov-2006


Page: 1 2 3

Related medicine news :

1. iPods help docs improve stethoscope skills
2. Repetition reverses med students stethoscope shortcomings
3. Device helps physically disabled turn on computer
4. Case study: cross-cultural bioethics training program helps fight African brain drain
5. New drug development facility helps move medicines to market
6. Research shows aerobic exercise helps maintain muscle in elderly
7. Virtual autopsy helps identify drowning as cause of death
8. Topical retinol helps reduce wrinkles associated with natural skin aging
9. Transplanting human gut bugs into mice helps understanding of metabolic system
10. Quick, innovative procedure helps men minimize incontinence after prostatectomy
11. New research helps overcome major CPAP problem

Post Your Comments:
(Date:11/27/2014)... 27, 2014 In order to enable people ... Fla., designed an easy way to avoid touching a toilet ... then created a prototype of the patent-pending Toilet Tamer, a ... toilet seat and/or lid in a more sanitary manner. It ... of germs. Overall, it promotes good hygiene and peace of ...
(Date:11/27/2014)... 27, 2014 Two international trainers and ... procedure will help one person with significant needs but ... Jivraj and Dr. Mamaly Reshad of the Anacapa Dental ... launched a website devoted to helping dentist learn about ... website would be devoted to helping a patient who ...
(Date:11/27/2014)... (PRWEB) November 27, 2014 Dr. Ronald Receveur, ... has a few oral health tips before patients dig ... offers Louisville and New Albany affordable cosmetic dentistry, ... high in starch and sugar. While the staff wishes everyone ... helpful tips for how patients can enjoy a feast that ...
(Date:11/27/2014)... At The Little Gym, we know that being active ... when a recent study confirmed that regular physical activity ... of Pediatrics found that “Promoting physical activity that ... years may be important not only for health, but ... groups of children; those that were engaging in regular ...
(Date:11/27/2014)... India (PRWEB) November 27, 2014 Ethane Web ... announced it will provide a 10% Christmas discount on PPC ... of December. The discount offer will begin on 1 December ... , About this offer, a PPC professional working at ... all, especially for small businesses, as this big discount would ...
Breaking Medicine News(10 mins):Health News:World-Renowned Oxnard All-on-4™ Dental Implants Experts to Give Away Full Mouth Rehabilitation Annually 2Health News:World-Renowned Oxnard All-on-4™ Dental Implants Experts to Give Away Full Mouth Rehabilitation Annually 3Health News:World-Renowned Oxnard All-on-4™ Dental Implants Experts to Give Away Full Mouth Rehabilitation Annually 4Health News:World-Renowned Oxnard All-on-4™ Dental Implants Experts to Give Away Full Mouth Rehabilitation Annually 5Health News:New Albany Dental Practice Offers Oral Health Tips For Thanksgiving 2Health News:New Albany Dental Practice Offers Oral Health Tips For Thanksgiving 3Health News:New Albany Dental Practice Offers Oral Health Tips For Thanksgiving 4Health News:Ethane Web Technologies Announces 10% Christmas Discount on PPC Service 2
(Date:11/26/2014)... SHANGHAI , Nov. 26, 2014  CARsgen, a ... (CAR-T) cell immunotherapy to treat a variety of cancers, ... led by BVCF, a China -based ... an immunotherapy company focused on the development of new ... collaboration with Shanghai Cancer Institute and Shanghai Renji Hospital, ...
(Date:11/26/2014)... Nov. 26, 2014 The medical magnetic ... rate of 4%, with world market revenues for ... MRI and other types of medical imaging have ... of numerous medical conditions in children and adults, ... Kalorama,s report, Medical Imaging Markets , analyzes ...
(Date:11/26/2014)... , November 25, 2014 ... Market by Power Source (Electric, Battery, Pneumatic), by ... Blade, Burr, Cart), by Application (Orthopedic, ENT, Oral, ... by MarketsandMarkets, the global Powered Surgical Instruments Market is ... Billion in 2014 and is expected to grow ...
Breaking Medicine Technology:CARsgen Completes Series A Financing 2Kalorama: Steady Growth in the Medical MRI Market 2Kalorama: Steady Growth in the Medical MRI Market 3Powered Surgical Instruments Market Worth $2.1 Billion by 2019 2Powered Surgical Instruments Market Worth $2.1 Billion by 2019 3Powered Surgical Instruments Market Worth $2.1 Billion by 2019 4
Cached News: