US 11,654,034 B2
Hand assembly for an arm prosthetic device
Christopher C. Langenfeld, Nashua, NH (US); Christopher O. Evans, Amherst, NH (US); Stanley B. Smith, III, Raymond, NH (US); Alexander H. Muller, Manchester, NH (US); John M. Kerwin, Manchester, NH (US); Thomas S. Schnellinger, North Andover, MA (US); G. Michael Guay, Greenville, NH (US); and Dirk A. van der Merwe, Manchester, NH (US)
Assigned to DEKA PRODUCTS LIMITED PARTNERSHIP, Manchester, NH (US)
Filed by DEKA Products Limited Partnership, Manchester, NH (US)
Filed on May 24, 2019, as Appl. No. 16/421,558.
Application 16/421,558 is a continuation of application No. 14/809,624, filed on Jul. 27, 2015, granted, now 10,299,941.
Application 14/809,624 is a continuation of application No. 12/027,141, filed on Feb. 6, 2008, granted, now 9,114,028.
Claims priority of provisional application 60/963,639, filed on Aug. 6, 2007.
Claims priority of provisional application 60/899,833, filed on Feb. 6, 2007.
Prior Publication US 2019/0307580 A1, Oct. 10, 2019
Int. Cl. A61F 2/58 (2006.01); A61F 2/70 (2006.01); A61F 2/68 (2006.01); A61F 2/76 (2006.01); A61F 2/54 (2006.01); A61F 2/78 (2006.01); A61F 2/50 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/54 (2013.01) [A61F 2/581 (2013.01); A61F 2/582 (2013.01); A61F 2/583 (2013.01); A61F 2/585 (2013.01); A61F 2/586 (2013.01); A61F 2/70 (2013.01); A61F 2/78 (2013.01); A61F 2002/30462 (2013.01); A61F 2002/5001 (2013.01); A61F 2002/507 (2013.01); A61F 2002/5059 (2013.01); A61F 2002/5061 (2013.01); A61F 2002/5069 (2013.01); A61F 2002/5083 (2013.01); A61F 2002/543 (2013.01); A61F 2002/546 (2013.01); A61F 2002/587 (2013.01); A61F 2002/6827 (2013.01); A61F 2002/6836 (2013.01); A61F 2002/6845 (2013.01); A61F 2002/6854 (2013.01); A61F 2002/6863 (2013.01); A61F 2002/701 (2013.01); A61F 2002/704 (2013.01); A61F 2002/764 (2013.01); A61F 2002/7625 (2013.01); A61F 2002/7635 (2013.01); A61F 2002/7862 (2013.01); A61F 2220/0075 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A hand assembly for a prosthetic arm apparatus comprising:
a thumb structure;
an index finger structure;
a middle, ring, and pinky (MRP) structure including three finger structures; and
a plurality of actuators,
wherein the plurality of actuators is configured to drive the thumb structure, index finger structure and MRP structure independently from each other; and
wherein the MRP structure is driven by a single actuator of the plurality of actuators through a double differential drive that allows independent movement of under-actuated finger structures of the MRP structure.