Protecting the child's abdomen: A retractile bicycle handlebar

The Children's Hospital of Philadelphia, PA 19104, USA.
Accident Analysis & Prevention (Impact Factor: 1.87). 12/2001; 33(6):753-7. DOI: 10.1016/S0001-4575(00)00089-0
Source: PubMed


A surveillance system in the Emergency Department of a level 1 pediatric trauma center previously identified minor bicycle crashes as a cause of serious child abdominal injury. A discordancy exists between the apparently minor circumstances and serious injuries sustained by child bicyclists who impact bicycle handlebars. The objective of this work was to redesign the bicycle handlebar to reduce the forces transmitted to the child's abdomen during an impact with the handlebars. A retractable handlebar consisting of a spring-mass-damper system was designed to retract and absorb the majority of energy at impact (Patent pending). Because the child remains in contact with the bar after impact, the retracting system also includes a mechanism to damp the outward motion of the handlebar. This prototype will reduce the forces at impact by approximately 50% in a collision similar to those discussed above. A unique methodology of translating research findings into product design produced a novel handlebar that absorbs significant energy that otherwise would be transferred to the child's abdomen when impacting the handlebar.

3 Reads
  • [Show abstract] [Hide abstract]
    ABSTRACT: After Taiwan becomes a member of World Trade Organization (WTO), conventional industry in Taiwan need to pursue innovation to be profitable and maintain the competition stance. This study attempts to indicate patent performance of Taiwan textile and bike industries. The research object of this study includes twenty textile companies and three bike companies publicly traded in Taiwan Stock Exchange Corporate (TSEC) . Moreover, the patent data of the textile industry in this study were obtained from Taiwan Patent Network (TWPAT), and the patent data of the bike industry were obtained from TWPAT and European Patent Office (EPO). The major results of this study are analyzed by using patent indicators, which include Number of Patents (NOP) , International Patent Classification (IPC) , Patent Growth Rate per Quarter (PGR) and Technology Cycle Time (TCT). This study finds out that the region distribution and investment level of patent portfolios of these two industries are different such that their profitability and product value are different. The results of this study provide a valuable reference for R&D and patent portfolios of textile and bike companies.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Summary Background: Bicycling is popular among children; 80 to 90% of school-age children own bicycles. Unfortunately, bicycle crashes result in ~600 deaths each year in the U.S. Additionally, direct impact handlebar injuries to the liver, spleen, pancreas, duodenum, intestine, kidneys, urethra and major vessels have all been reported. The purpose of our study was to outline the mechanism of serious bicycle handlebar-related injuries and emphasize the role of abdominal abrasion as a sign of acute abdomen. Methods: Medical records for patients discharged for contusion of the skin with and without visceral lesion due to handlebar injury were compared with 112 bicycle falls. Results: Six patients had abdominal contusion with imprints and visceral lesion and another six patients had contusion without any imprints or visceral lesion. Stastistical anlysis showed p
  • [Show abstract] [Hide abstract]
    ABSTRACT: This study was designed to evaluate bicycle-related injuries among children requiring emergency treatment, assess the use of safety measures before and after injuries, and determine parental attitudes regarding bicycle safety. Six hundred fifty-eight children were treated for bicycle-related injuries during the study period. Follow-up contact with patients' families was made by telephone or mail within 2 months. Use of safety equipment other than brakes and reflectors occurred in less than 7% of cases. Less than 25% of children used hand signals. Sixty-eight percent of children reportedly owned a bicycle helmet before the injury, but only 26.1% "always" and 29.7% "never" wore a helmet. Given the high parental understanding of the importance of bicycle helmet use, more education and warnings alone are unlikely to increase helmet usage. Parents support a mandatory helmet use law, and therefore, local and state bicycle helmet ordinances and laws should be combined with education.
    Clinical Pediatrics 05/2004; 43(3):251-9. · 1.15 Impact Factor
Show more

Similar Publications