Hayes G.P.,U.S. Geological Survey |
Hayes G.P.,Synergetics Inc
Earth, Planets and Space | Year: 2011
On March 11th, 2011, a moment magnitude 9.0 earthquake struck off the coast of northeast Honshu, Japan, generating what may well turn out to be the most costly natural disaster ever. In the hours following the event, the U.S. Geological Survey National Earthquake Information Center led a rapid response to characterize the earthquake in terms of its location, size, faulting source, shaking and slip distributions, and population exposure, in order to place the disaster in a framework necessary for timely humanitarian response. As part of this effort, fast finite-fault inversions using globally distributed body- and surface-wave data were used to estimate the slip distribution of the earthquake rupture. Models generated within 7 hours of the earthquake origin time indicated that the event ruptured a fault up to 300 km long, roughly centered on the earthquake hypocenter, and involved peak slips of 20 m or more. Updates since this preliminary solution improve the details of this inversion solution and thus our understanding of the rupture process. However, significant observations such as the up-dip nature of rupture propagation and the along-strike length of faulting did not significantly change, demonstrating the usefulness of rapid source characterization for understanding the first order characteristics of major earthquakes. © The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS). Source
Synergetics Inc. | Date: 2013-10-14
An illuminated surgical device includes a shaft and an optical fiber. The shaft includes a body having a central bore defined therein, and a passage extending through the shaft body to the central bore of the shaft. The shaft is configured for at least partial insertion into a human body. The optical fiber extends at least partially through the bore of the shaft such that light emitted from the optical fiber passes through the passage and is directed radially outward from the shaft.
Synergetics Inc. | Date: 2013-10-14
An irrigating cannula includes a hub having an inner passage and a side port extending through the hub and connecting to the inner passage. The inner passage is configured to receive an instrument, and a fluid passage is defined between the hub and the instrument. The fluid passage is configured to deliver a fluid through an incision in a body.
Synergetics Inc. | Date: 2013-01-09
Bipolar electrosurgical forceps are provided with dual irrigating tubes that deliver irrigating liquid to the opposed surfaces of the tips of the forceps to prevent the sticking of body tissue to the tips. To reduce the manufacturing costs of the forceps and enable the forceps to be single use, disposable forceps, each tube of the dual irrigating tools is a plastic tube adhered along one of the opposing surfaces of the pair of forceps arms. Each tube also has a flat nozzle at the distal end of the tube that disburses irrigating liquid across the opposed surfaces of the forceps arm distal and tips.
Synergetics Inc. | Date: 2012-03-30
A surgical instrument handle having a cam-actuated system is disclosed. The surgical instrument handle includes a rotating member that defines a cam-actuating surface operatively engaged with a locking member, which is fixedly engaged to a reciprocating member for moving the reciprocating member between a retracted and extended positions. The cam-actuating surface of the rotating member is configured to permit the locking member to slide along the cam-actuating surface such that the tangential angle along the point of contact between the locking member and the cam-actuating surface is maintained at a predetermined angle.