The Rampro ActivAnkle
Use the Swim Ankle for use around at a pool or lighter duty use
Use the ActivAnkle at the beach when sand and salt are issues
- Constructed of non-corroding Delrin and stainless steel
- Easy to Use Two Position Locking System
- 70 Degree Plantar Flexion
- Base Dimensions: 1 9/16" x 2 1/2" (39.4mm x 63.5mm)
- May be used in most lower limb prosthesis
- Uses 10mm Footbolt and Standard 4 Hole Pattern
- Neoprene covered to protect from sand
- Swim, snorkel or scuba, with or without fins.
- The Activankle easily locks into the walking position when you're finished.
- The Activankle has a protective neoprene cover to keep sand out.
- The unlocked Activankle allows unlimited dorsiflexion for a comfortable natural position.
- The Activankle easily locks into the walking position when you're finished.
- For Snow Skiing, Unlocked, the Activankle flexes freely in a single axis with no rotation or lateral movement.
- Designed for resistance-free natural movement.
- The Activankle easily locks into the walking position when you're finished.
- Lock lever normally is placed on medial side
The Rampro Swim Ankle
[ You can opt out of Google Ads if you are a registered user at /ad-options ]- The Swimankle is manufactured using the latest state of the art CNC equipment and manufacturing processes to ensure maximum reliability and ease of operation.
- The Swimankle uses the same 70-degree plantar flexion as the Activankle for optimum swimming performance.
- Unlike the Activankle, the Swimankle does not dorsiflex when unlocked.
- Reversable lock lever for use on either Left or Right side
- Unlike the Activankle, the Swimankle does not have a protective cover. Use in sandy conditions is not recommended.
Fabrication Suggestions
Rampro recommends a hollow exoskeletal leg with a Steplite foot.
The exoskeletal allows the water to flow undisturbed along the length of the leg and onto the foot.
A foam covered endoskeletal leg has a tendency to absorb water and even if the foam is waterproofed creates too much positive buoyancy.
By drilling two holes in the hollow section of the exoskeletal leg and allowing water to fill this cavity, eliminating excess positive buoyancy.
When a foam-covered foot is attached to the hollow exoskeletal swim leg, ideal positive buoyancy is attained.
A Steplite foot is another major factor for increasing hydrodynamic efficiency. When the Activankle is bolted to a Steplite foot, the Activankle pivots from a point closely resembling the natural ankle joint.
When these two are attached to the exoskeletal leg and fully plantar flexed, the top of the Steplite foot will line up evenly with the anterior of the leg.
Water flowing undisturbed along the leg and directly onto the top surface of the foot is what allows the foot to generate power.
Suspension is very important. In the water, the prosthesis should feel as if it were bearing weight.
If the limb is not suspended correctly, each kick will allow the residual limb to wobble inside of the socket, creating friction, and energy will not be fully transferred to the foot.
Silicone, urethane and latex suspension sleeves, work very well. They also keep water out. The addition of an auto expulsion valve creates superior suspension. For use with a pin suspension liner such as Alps or Silipos Liners, you can use among others, the Gator Grip Lock.
Whether you build endoskeletal or exoskeletal, the components used should be waterproof and corrosion resistant to salt.
The Steplite is Rampro's choice of foot. Water will not damage this foot. It has a graphite keel, the foam does not absorb water, and it can be ordered in several heel heights including flat. A
A KC10T Steplite Wayfarer is ideal for use around the water where barefoot is usually the norm. For added durablility, use an aqua shoe with no heel such as Nike's "Reefwalker" to protect the prosthetic foot and the real foot.
If the leg will also be used for snow skiing a low profile rotatable pyramid adapter should be used. Snow skiing typically requires the foot to be toed out 4 to 8 degrees.
Put your order specs in the notes section of the checkout
Shipment occurs usually by the tenth day after cleared payment AND the completed order has been received, unless there are other special order items, or the warehouse is out of stock, in which case we follow mail order policy from http://www.ftc.gov/bcp/edu/pubs/business/adv/bus02.shtm
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