OpenProsthetics.org - All Photos

My hands

Sat, 14 Nov 2009 18:41:02 +0000

by joanne tilley I've got the standard hook, supplemented with castration bands for tension. The small green bands work best, available at farm supply stores. They last a long time and are inexpensive.

sEMG process

Tue, 27 Oct 2009 10:29:14 +0000

by Md. Monzurul Alam This is a simple sEMG signal acqusition and process for one degree of freedom Bionic Prosthesis. It uses simple threshold to generate control pulse. 2 sEMG signal are compared with 2 different muscle and then the motor works whether in one direction or oposite deopending on the weight of singals. Please note: there is no rotation of motor when both of the sEMG signal is bellow the threshold level that a user sets.

DSC03707

Mon, 26 Oct 2009 23:11:22 +0000

by Md. Monzurul Alam

Teflon tape on 5x Hook

Sun, 18 Oct 2009 16:42:14 +0000

by Jon Kuniholm Adding some teflon plumbing tape to the hook before replacing rubber bands increases life about 8x.

Battery arm heater

Thu, 03 Sep 2009 07:25:47 +0000

by J.R. It gets bloody cold here in WI, so I made an arm heater to prevent more frostbite (I'm looking at skin grafts if I do it again). All it is is a high resistance wire wrapped around the socket attached to a 1.5v battery. Put a battery in the holder and the resistance in the wire causes the wire to heat up as the current passes through it. My prosthetic guys were kind enough to inset the battery pack for me so I dont have to keep screwing it to the side, which in turn causes it to get caught on everything. I have a neoprene cover that protects it when not in use. The heater uses a D battery and will stay warm for about 9 hours or more.

Battery Arm Heater

Thu, 03 Sep 2009 07:25:45 +0000

Hammer

Thu, 03 Sep 2009 07:25:42 +0000

by J.R. That little toy hammer they sell in most prosthetics catalogs is garbage. So I made a real hammer attachment out of a 22 oz framing hammer. This one has a magnetic nail holder for starting nails. The holder is so nice to have. No more attempting to hold a nail with a hook.

Hammer

Thu, 03 Sep 2009 07:23:02 +0000

Wood splitting hook

Thu, 03 Sep 2009 07:22:59 +0000

by J.R. I burn wood for heat here in WI. That means lots of time running a chainsaw, and standing over a hydraulic wood splitter. Its hard to grab big blocks with regular hook, even if its sharpened. So I made a custom attachment out of a hay hook. This thing is sweet, and big. I can pick up 100+ pound blocks without problems now. The nobs welded on the outside of the hook are so I can push on the hydraulic lever as well as pull. Otherwise my hook would slide right off.

Wood splitting hook - size comparison

Thu, 03 Sep 2009 07:22:58 +0000

by J.R. I burn wood for heat here in WI. That means lots of time running a chainsaw, and standing over a hydraulic wood splitter. Its hard to grab big blocks with regular hook, even if its sharpened. So I made a custom attachment out of a hay hook. This thing is sweet, and big. I can pick up 100+ pound blocks without problems now. The knobs welded on the outside of the hook are so I can push on the hydraulic lever as well as pull. Otherwise my hook would slide right off.