The CAPP Terminal Device, Size #2

CARL T. SUMIDA, CPO AND JULIE SHAPERMAN, MA, OTR*Los Angeles, California


The CAPP Terminal Device, Size #2 is almost ready for clinical evaluation. Not simply an upscale of Size #1, the Size #2 has many unique features that should meet the functional needs of adolescent and adult amputees. After studying grip as a design problem, the designers created a new terminal device with three mechanical features, an automatic lock, resilient cover and spring, that combine to give firm grip without yielding when forces are exerted on objects. The operating characteristics were achieved without requiring high prehension and operating forces. The terminal device has a new type of connector that adapts to three kinds of fittings, gives quick release and reliable friction adjustment. A durable, full cover which is easily replaceable gives a pleasing, finished appearance to the Size #2 CAPP Terminal Device.

*Child Amputee Prosthetics. Project, University of California at Los Angeles, 1000 Veteran Avenue, Los Angeles, CA 90024