30-Second Demonstration of the CIR Sand Casting System
Intro: 30-Second Demonstration of the CIR Sand Casting System
In only 50 seconds, the CIR Sand Casting System allows for the replication of a residual limb. This model can then be modified and used to create a final transtibial (below-the-knee) prosthetic socket. The technique eliminates the need for plaster bandages and Plaster-of-Paris, and requires only:
1. A large container
2. Silica sand
3. An air compressor capable of maintaining a vacuum
4. A metal pipe for connecting to vacuum pump
5. Thin plastic bags
6. Rubber bands
The contents of this presentation/publication were developed under a grant from the Department of Education, National Institute on Disability and Rehabilitation Research grant number H133E980031. However, those contents do not necessarily represent the policy of the Department of Education, and you should not assume endorsement by the Federal Government.
1. A large container
2. Silica sand
3. An air compressor capable of maintaining a vacuum
4. A metal pipe for connecting to vacuum pump
5. Thin plastic bags
6. Rubber bands
The contents of this presentation/publication were developed under a grant from the Department of Education, National Institute on Disability and Rehabilitation Research grant number H133E980031. However, those contents do not necessarily represent the policy of the Department of Education, and you should not assume endorsement by the Federal Government.
24 Comments
bkafirefighter 11 years ago
arniethelip 12 years ago
CIRnetwork 12 years ago
The positive cast is in fact made of sand and is contained within a second plastic bag. It is sealed in this bag using rubber bands and/or tape, making it possible to maintain the shape for a short period without vacuum applied - this also allows for modifications to the positive model if needed. After creating the positive model, the cast of the socket can be made using a draping method as would traditionally be done for a plaster positive model.
Grace Robert 14 years ago
nicoluxe 14 years ago
CIRnetwork 14 years ago
The CIR Sand Casting System was developed and tested in Chicago, and underwent independent evaluation in Hanoi, Vietnam in 2004. In 2005, the BMVSS-Jaipur Limb Program in Jaipur and New Delhi, India adopted the technology, which (as of 2007) was replaced by an improved version of CIR Casting System. Currently, this newer casting method is widely used in India and Thailand. A modified version of the CIR Casting System was used in Thailand to fabricate prostheses for two elephants who were injured by landmines.
To date, the CIR Sand Casting System and the newer CIR Casting System have been applied to between 2,000 and 3,000 individuals with below-the-knee amputations.
Jaycub 14 years ago
CIRnetwork 14 years ago
Templarix47 14 years ago
CIRnetwork 14 years ago
=SMART= 14 years ago
CIRnetwork 14 years ago
=SMART= 14 years ago
mycroftxxx 14 years ago
CIRnetwork 14 years ago
nlawrence 14 years ago
CIRnetwork 14 years ago
heathbar64 14 years ago
CIRnetwork 14 years ago
Following the insertion of the mandrel (steel pipe) into the cavity of the negative mold, the plastic bag seals the sand in the negative mold around the mandrel. Once sealed, the vacuum suction is applied through the top of the mandrel to solidify the sand in the cavity of the negative mold. When the vacuum suction is disconnected from the negative mold, the negative mold becomes a loose mass so that the solid positive model, which is still held under vacuum suction, can be removed easily.
Please note that the process was developed for making prosthetic limbs for individuals with below-the-knee amputations. There are a number of other technical steps involved in the process of fabricating a properly fitted prosthesis. A further improved method of creating prosthetic devices, the CIR Casting System, has also been developed and used to train professionals in the developing world. The CIR Casting System was also modified and used to create a prosthesis for a young Thai elephant who was injured by a landmine blast.
red-king 14 years ago