Help Bump establish a large-scale manufacturing and management system for the OpenSocket prosthetic arm.

Our team spent the last 4 years creating the OpenSocket, a prosthetic arm for people in need. We’ve launched our device with almost 100 patients, but we need your help to get it to the next 1,000.




raised of $30,000 goal


days to go

Funding Period  

Oct 5 - Nov 4


The Global Problem

Conventional prosthetics are expensive and often difficult to obtain because they are slowly custom-made by professional prosthetists. In many regions, there is a shortage of these professionals. As a result of this, only 2% of people with amputations in developing countries have access to a prosthetic device. 

Our Innovative Solution

Providing someone with a conventional prosthetic arm requires a specialized lab and a highly-trained prosthetist. By comparison, a clinician with minimal OpenSocket training can fit this device to a patient in just a few minutes.

The interior plastic structure of the OpenSocket changes size and shape with the adjustment of some simple straps.


The OpenSocket comes in 3 adult sizes.

The OpenSocket makes prosthetic care much more accessible to people in need by significantly reducing costs and shortening the waiting and fitting process for end-users.

Our Model for Impact

We distribute the OpenSocket through partnerships with public health organizations working with people in need. While traditional prosthetic care often requires patients to travel to far-away clinics, Bump’s decentralized distribution system makes the OpenSocket available to people in many geographic regions. 


How it works:


We partner with health-related aid organizations throughout the world

We produce the OpenSockets in our studio space


Partners order the OpenSocket from us at $500 per device


Partners fit the OpenSocket in a clinic, or even in a home

Where we are today


So far, we have partnered with 20 organizations to provide the OpenSocket to 93 people in 10 different countries. This work has demonstrated the effectiveness of the OpenSocket as well as our distribution model.

Unfortunately, this exciting progress is small when compared to the global need for prosthetic care. OpenSocket orders from partner organizations are beginning to overwhelm our current manufacturing system.

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Bump Must Grow

In order to meet the growing demand for OpenSockets, Bump needs YOUR HELP to expand its production and organizational capacity. With a fundraising goal of $30,000, we will accomplish three critical goals over the next four months:

1. Scale Manufacturing

Our field partners are asking for more OpenSockets than we can produce in our Champaign office. In order to meet this need, we will produce plastic components at a facility in Paxton, IL.

2. Invest in Inventory

Right now, it is nearly impossible for us to ship large orders quickly. If we expedite the process by investing in inventory, amputees will be able to access prosthetic care even faster.

3. Build a More Robust Organization

Currently, our team stretches far beyond their means to carry out the work of Bump. By fairly and appropriately compensating staff, we will ensure that our team can continue to make a full-time commitment to providing prosthetic care to people in need.




Bump was born and raised in this community.

Years ago, Bump began as a student project at the University of Illinois, and we work out of a space in the University of Illinois Research Park. Every day we engage people from the C-U community in our effort, and we have been incredibly grateful for your moral support!

Now, we are asking for your financial support. We want to grow from a small, but successful student project, into an organization that is making a lasting impact on the world. We want to continue to reach out from Champaign-Urbana and directly touch the lives of people across the globe, and in doing so prove that an international nonprofit doesn’t have to be in California or New York City to be successful.

Join these other Champaign individuals and businesses in supporting Bump


How do we form Partnerships?

Bump actively reaches out to organizations that are aligned with our goal of empowering people in poverty. Some of these organizations are already working in the prosthetic space, but many are not. Some organizations also reach out to us through our website.

With any new organization, we give them the training they need to learn how to use the OpenSocket. We often provide new organizations with a one or two trial OpenSockets at no cost so they can become acquainted with the technology, and see how well it fits with their mission.


How is the OpenSocket produced today?

Currently, the OpenSocket is produced in our workshop in Champaign. The production work is performed by our staff members and a few volunteers. The OpenSocket is constructed from molded plastic and sewn fabric, so most of the production operations are simple to complete. We intentionally kept our production in-house so we could easily adjust to address any feedback we received from our early users.


What will new production look like?

The funds from this campaign will help us to drastically improve our manufacturing process. We will improve both of the key elements of production: 1) sewing work and 2) plastic molding.

1) The sewing work was originally done by Bump’s core team. This took valuable time away from work on other things like recruiting new partners and shipping orders. Today, sewing is done by an independant contractor near Chicago. This first step in outsourcing has helped us greatly increase our efficiency. We are currently looking to partner with a sewing production facility in the Champaign-Urbana area to push our sewn production even farther.

2) Plastic molding has been done in house by Bump. This molding was performed by heating plastic sheet and forming it over wooden molds.


The OpenSocket costs $500. What does this pay for?

There are several costs when producing the OpenSocket. These costs include raw materials, production, assembly, logistical management, packaging, and shipping. Since we currently produce the OpenSocket at small volumes, these costs are highly variable per device. A change in the size of a batch affects the per-part cost of each of the raw material components we order, as well as the cost of doing the production work. This why we want to not only scale our production capability, but also invest in inventory. Having a constant inventory will help us to better predict the cost of each device.


Why does Bump charge partners for the OpenSocket?

Bump asks it’s field partners to pay for the OpenSocket to create a more sustainable system of providing the device to patients. If Bump was solely responsible for soliciting donations to fund the OpenSocket, we would greatly limit how many people could receive care. We would also


Do patients pay for the OpenSocket?

Can people in the US get the OpenSocket?


Some icons on this page were downloaded from the incredibly useful Noun Project.