Caldwell Ryan, Fatone Stefania
Northwestern University Prosthetics-Orthotics Center, Northwestern University, Chicago, IL, USA.
Prosthet Orthot Int. 2019 Apr;43(2):233-239. doi: 10.1177/0309364618798869. Epub 2018 Sep 17.
: Development of a passive suction version of the Northwestern University Flexible Sub-Ischial Vacuum socket would expand application of sub-ischial sockets to a larger proportion of persons with transfemoral amputation. While active vacuum suspension provides more positive coupling of the residual limb to the prosthetic socket, there are circumstances when use of active vacuum is not appropriate or feasible. Therefore, this technical note describes the technique modifications required to cast, fabricate, and fit a passive suction version of the Northwestern University Flexible Sub-Ischial Vacuum socket (i.e. the Northwestern University Flexible Sub-Ischial Suction socket).
: Most technique modifications stem from the use of an internal seal with the Northwestern University Flexible Sub-Ischial Suction socket and the need to account for the greater relative motion occurring between the residual limb and socket with passive suction compared to active vacuum suspension.
: Between January 2015 and March 2018, 266 Northwestern University Flexible Sub-Ischial Suction sockets were fit successfully using the described technique modifications.
A passive suction version of the Northwestern University Flexible Sub-Ischial Vacuum socket-the Northwestern University Flexible Sub-Ischial Suction socket-broadens the application of sub-ischial sockets to a larger proportion of the population with transfemoral amputation.
开发西北大学柔性坐骨下真空接受腔的被动吸引版本，将扩大坐骨下接受腔在更大比例的经股骨截肢者中的应用。虽然主动真空悬吊能使残肢与假肢接受腔实现更紧密的连接，但在某些情况下，主动真空的使用并不合适或不可行。因此，本技术说明描述了制作、装配西北大学柔性坐骨下真空接受腔（即西北大学柔性坐骨下吸引接受腔）被动吸引版本所需的技术改进。
大多数技术改进源于西北大学柔性坐骨下吸引接受腔使用内部密封，以及与主动真空悬吊相比，被动吸引时残肢与接受腔之间会出现更大相对运动，需要对此加以考虑。
在2015年1月至2018年3月期间，使用所描述的技术改进方法成功装配了266个西北大学柔性坐骨下吸引接受腔。
西北大学柔性坐骨下真空接受腔的被动吸引版本——西北大学柔性坐骨下吸引接受腔——将坐骨下接受腔的应用扩大到更大比例的经股骨截肢人群。
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