Thread-size Adaptor for TD

youmagine

Experimental designs for prosthetic devices created by e=NABLE volunteers incorporate modular systems with upper limb sockets that accommodate multiple terminal device (TD) designs, each utilizing various thread types such as metric threads (e.g., M12) or American standards like 1/2 inch fine thread (1/2 - 20). To ensure universal compatibility among TDs, this adaptor can be used to bridge the gap between disparate modular elements. Sometimes volunteer fabricators lack easy access to required thread types during fabrication, and this adaptor can be obtained from another e-NABLE volunteer at a later time. To create the adaptor, print it in PLA and then use heat or hot water to raise its temperature to the glass-transition point. Next, squeeze the adaptor with a gloved hand to form a tight fit around the appropriate nut and bolt sizes, creating an interface between modular elements. The adaptor can be scaled as needed using a slicer. Prior Art includes notable examples like the Monette Socket (thingiverse.com/724815), Normally-Closed Flexy-Hand Terminal Device (youmagine.com/designs/normally-closed-flexy-hand-terminal-device-1-0), Flexy-Hand Terminal Device (youmagine.com/designs/flexy-hand-terminal-device), Hosmer Hooks (hosmer.com/products/hooks/), and Ottoback Hooks (ottobock.com/cps/rde/xchg/ob_com_en/hs.xsl/5458.html).