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Raymond M Dunn

UMassMed Faculty Page


Title: Systems and Methods for Prevention of Pressure Ulcers. UMMS16-69; Patent Pending. 

  • The systems, devices, and methods of this invention provide diagnostic measurements detecting or preventing pressure ulcers. Pressure measurements at body locations are used to determine a diagnostic pressure ulcer value which indicate whether corrective action is needed to prevent pressure ulcer formation. One or more sensor devices can be attached to a patient to measure to transmit data for further processing.

Title: Negative Pressure Amputation Wound Closure Device. UMMS16-33; Patent Pending.

  • The invention describes systems, devices, and methods to accelerate and reduce medical complications associated with healing of amputation wounds. The devices and methods utilize a compression structure and negative pressure to cause the amputation wound to preferentially close from the deepest portion of the wound to the shallowest portion.

Title: SURGICAL FORCEPS ["Design" Patent]. UMMS14-54; Patent US D762,302 SUS D797,284 S.

Title: Surgical Forceps Handle. UMMS14-52; Patent Pending.

  • The present invention describes forceps having a geometry suitable for precise grasping and manipulation, designed to reduce fatigue in the surgeon and improve surgical outcomes. The forceps use contoured arms having generally rounded surfaces along their longitudinal length. This shape enables the surgeon to easily rotate the forceps to different angles to reduce the need to hold the handle differently. This enables rotation of the forceps within a body cavity without a substantial change of arm position and viewing angle. The contoured surface provides an increase in the grasped surface area thereby increasing the amount of functional contact at many angles. 


  • This invention is a new device that enables wound closure from injury or surgery without the use of traditional sutures or staples that cause additional swelling and tissue damage. The new method specifically applies pressure to wound edges while simultaneously removing wound fluids. Using this device in closures promotes higher rates of healing and prevents repetitive replacement of wound filters. 

Title: Zygomatic Elevator. UMMS10-27; Patent Pending. 

  • A surgical elevator device that can be used in the reduction of bone fractures, particularly facial bone fractures, and even more particularly zygomatic arch fractures. The elevator device enables accurate measurement of the depth of insertion of the device into tissue space and provides tactile control of fracture location and reduction. In one embodiment, the elevator device comprises a groove on an elevator element for receiving a bone structure. The groove can be formed by a pair of parallel ridges. A projection extending from the elevator provides a pivot point for applying a controlled force to the bone to reduce the fracture. A preferred embodiment further comprises a method of reducing a bone fracture, such as a zygomatic arch fracture. 

Title: BONE FIXTURE ASSEMBLY. UMMS09-49; Patent 8,690,927US9,566,098B2.

  • The present invention provides a screw and plate assembly for sternal fixation. This technology provides an improvement over steel wire fixation, the method currently used for sternal fixation. Specifically, this technology decreases unwanted loosening and failure of the fixation system, a problem common in osteoporotic or lower-density bones.


Innovation Topics: DiagnosticsMedical DevicesPressure ulcer, AmputationWound healing, SurgeryForcepsSuturesStaples, Facial fractureOrthopedicsBone fixationSternal fixationCardiovascular disease/CardiologyHeart surgery