Harnessing for Body Powered Prostheses Ryan Spill, CP Advanced Arm Dynamics September 30, 2010.

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Presentation transcript:

Harnessing for Body Powered Prostheses Ryan Spill, CP Advanced Arm Dynamics September 30, 2010

Transradial Prosthesis Figure 8 Figure 9 Modified

Figure 8 harness Suspension Control Axilla loop Inverted Y suspension

Inverted “Y” Strap for Suspension

Control Strap

Figure 9 Harness Provides control of TD only Alternate suspensory technique

Self-Suspending Socket Design with Figure 9 Harness

Custom Harness Designs Patient prefers suction socket Figure 9 harness for TD control Distal attachment to frame

Modified Control Cable Patient lives substantial distance from office Heavy duty user

Alternate Control Cable

Alternate Anchor instead of Axilla Loop

Modified Triceps Cuff

Medial Cross Bar Assembly

Bilateral Figure 8

Transhumeral Prosthesis Figure 8Chest StrapModified

Figure 8 harness Efficient Suspension & Control Suspension strap Elbow Lock/Unlock Elbow/TD control

Figure 8 Harness Lock/Unlock Control

Figure 8 Harness for Triple Control Double Ring Control Cable mounted Laterally lock

Control Strap Mounted Medially

Transhumeral Chest Strap Left Transhumeral amputee secondary to trauma Contralateral hand weakness

Transhumeral Chest Strap HarnessAttachment Lock/Unlock Cable Easier for donning than Figure 8

Control Strap

Modified Chest Strap Narrow Straps Medial lock/unlock attachment allows locking by abduction

Elastic suspensory straps Control strap travels through keeper attached to elastic

Chest strap for Elbow Disarticulation

Modified Harness Left transhumeral amputee Secondary to burns Compromised hand strength

Initial Chest Strap

Elastic Chest Strap Attached to Axilla Loop Combination of Figure 8 and Chest Strap Designs

Socket Modification to Assist Harness Silicone Locking Liner Proximal and Distal Suspension Strap

Thank You!