Hoskins R.D.,Prosthetic Design Inc. |
Sutton E.E.,Prosthetic Design Inc. |
Kinor D.,Dayton Artificial Limb |
Schaeffer J.M.,Dayton Artificial Limb |
Fatone S.,Northwestern University
Prosthetics and Orthotics International | Year: 2014
Background: Persons with amputation and residual limb wounds would benefit from the ability to continue wearing a prosthesis while healing. Sockets with vacuum-assisted suspension may reduce intra-socket motion and be less disruptive to wound healing. The purpose of this case series was to measure residual limb wound size over time in persons with transtibial amputation while using prostheses with vacuum-assisted suspension. Case description and methods: Six subjects with residual limb wounds were fit with vacuum-assisted suspension sockets. Wound surface area was calculated using ImageJ software at the time of fit and each subsequent visit until closure. Findings and outcome: Average wound surface area at initial measurement was 2.17 ± 0.65 cm2. All subjects were instructed to continue their normal activity level while wounds healed, with a mean of 177.6 ± 113 days to wound closure. Conclusion: Results suggest that well-fitting sockets with vacuum-assisted suspension in compliant individuals did not preclude wound healing. Further research is required to substantiate these case-based observations. © The International Society for Prosthetics and Orthotics 2013.
Agency: Department of Health and Human Services | Branch: National Institutes of Health | Program: STTR | Phase: Phase I | Award Amount: 186.74K | Year: 2016
DESCRIPTION provided by applicant This proposed project will further develop a CFC off loading AFO designed to offload plantar pressures and optimize patient function through maximizing plantarflexor power production During Phase I we will determine the effects of varying design characteristics of CFC off loading AFOs We will refine and create new FEA models and algorithms that predict the appropriate brace design given patient characteristics including patient baseline functional abilities In a future Phase II project we will continue to refine the algorithm for patients with various diagnoses and presentations to ensure the applicability across the spectrum of potential users and develop rapid fabrication techniques that integrate CAD CAM technology to maximize brace durability minimize error and allow national and international CFC off loading AFO distribution PUBLIC HEALTH RELEVANCE Over million Americans will develop at least one neuropathic foot ulcer during their lifetimes and foot disease usually foot ulceration is the prie precipitant of diabetes related lower extremity amputations Effective clinical management can reduce both ulceration and amputation but current treatments significantly curtail patientsandapos physical activity levels The purpose of this project is to determine the patient characteristics that predict the optimum design variables needed to create a carbon fiber composite CFC offloading ankle foot orthosis AFO that delays or prevents non traumatic lower extremity amputations and increases physical activity and quality of life in patients with diabetes mellitus DM peripheral neuropathy PN and foot complications
Prosthetic Design Inc. | Date: 2012-06-26
Prosthetic Design Inc. | Date: 2012-08-07
Prosthetic limb components, namely, lanyard suspension mechanism and locking mechanism and an integrated spool for taking and storing excess lanyard cord.
Prosthetic Design Inc. | Date: 2012-05-08
Prosthetic Design Inc. | Date: 2011-03-22
Prosthetic limb components, namely, suspension locks, interconnection components and vacuum components.
Prosthetic Design Inc. | Date: 2012-10-29
A prosthetic limb socket assembly includes a bleeder valve configured to automatically adjust vacuum pressure within the prosthetic limb socket based upon a difference in ambient air pressure and vacuum pressure within the prosthetic limb socket. The bleeder valve includes: a housing having a first end, a second end, and channel extending therethrough providing fluid communication between the ambient and the interior of the prosthetic limb socket; and a valve disc disposed within the channel and biased into a substantially sealed engagement with a valve seat, wherein a certain pressure difference between the ambient and the interior of the prosthetic limb socket is operative to overcome the bias and unseat the valve disc from the valve seat.
Prosthetic Design Inc. | Date: 2011-11-11
A prosthetic limb lanyard cord retainer spool is provided, which may be mounted onto the side of a prosthetic limb socket to retain slack or excess cord from a lanyard locking system. After the limb has been locked into place, excess cord from the lanyard system may be pressed into a seam formed between the outer wall of the prosthetic limb socket and a radially outer flexible sealing flange of the cord spool to enter a circumferential channel of the cord spool (radially between the outer flexible sealing flange and an inner stem), and may be manually wrapped around the stem of the spool in a circular motion.
Prosthetic Design Inc. | Date: 2011-06-02
Fuel tank stands are disclosed. Some example embodiments may include a base configured to engage a chassis of a vehicle; at least one arm comprising a first end pivotably mounted to the base; and a tank support mounted to a second end of the at least one arm, the tank support being configured to selectively engage and at least partially support a fuel tank of the vehicle. Some example embodiments may include a bias, such as a torsion spring, configured bias the arms into a generally upright configuration. Some example embodiments may include a latch configured to retain the arms in a collapsed configuration.
Prosthetic Design Inc. | Date: 2012-07-02
Vacuum locking systems for prosthetic limbs are generally disclosed. An example double-wall socket system according to at least some aspects of the present disclosure may include a flexible liner shaped to accept a portion of a residual limb; a plunger pin mounted to a distal end of the flexible liner; an inner socket shaped to receive the flexible liner and the residual limb; an outer socket shaped to receive the inner socket, the flexible liner, and the residual limb; a locking mechanism mounted at least partially within the inner socket approximate a distal end of the inner socket; and a manifold mounted to a distal end of the outer socket. The manifold may be configured to be connected to a vacuum pump for withdrawing air from the double wall socket system.