GEORGE S SPRINGER
Engineering in Palo Alto, CA
License number
Massachusetts 20809
Issued Date
Sep 23, 1966
Expiration Date
Jun 30, 2012
Type
Mechanical Engineer
Address
Address
Palo Alto, CA 94305
Professional information
George Springer
Specialties:
Engineering
Work:
Stanford University
Expandable Space Frame
US Patent:
6699279, Mar 2, 2004
Filed:
May 15, 2002
Appl. No.:
10/147391
Inventors:
Walter J. Stevens - Fairfax VA
George S. Springer - Stanford CA
George S. Springer - Stanford CA
Assignee:
The Board of Trustees of the Leland Stanford Junior University - Palo Alto CA
International Classification:
A61F 206
US Classification:
623 115, 623 116, 623 122
Abstract:
An expandable space frame is manufactured by linking a plurality of flexible joints through spacing arms to form a closed structure. The spacing arms are sterically offset, linking the bottom of one joint to the top of the next joint in an stepwise fashion. The offset allows the frame to be collapsed with minimal steric hindrance between the centered joints. This lack of steric hindrance permits a very high ratio of the expansion to compression diameters for the frame. The space frame forms the basis for different types of stents. A spiral frame, or a series of individual frames are linked to each other to form a luminal stent, or are linked to longitudinal struts to form the support structure for a stent. The stents formed from the expandable space frame can be designed to have a number of additional features as set forth herein.
Expandable Space Frame
US Patent:
6497724, Dec 24, 2002
Filed:
Oct 27, 2000
Appl. No.:
09/674185
Inventors:
Walter J. Stevens - Mountain View CA
George S. Springer - Stanford CA
George S. Springer - Stanford CA
Assignee:
The Board of Trustees of the Leland Stanford Junior University - Palo Alto CA
International Classification:
A61F 206
US Classification:
623 115, 623 116, 623 122
Abstract:
An expandable space frame is manufactured by linking a plurality of flexible joints through spacing arms to form a closed structure. The spacing arms are sterically offset, linking the bottom of one joint to the top of the next joint in an stepwise fashion. The offset allows the frame to be collapsed with minimal steric hindrance between the centered joints. This lack of steric hindrance permits a very high ratio of the expansion to compression diameters for the frame. The space frame forms the basis for different types of stents. A spiral frame, or a series of individual frames are linked to each other to form a luminal stent, or are linked to longitudinal struts to form the support structure for a stent. The stents formed from the expandable space frame can be designed to have a number of additional features as set forth herein.