Efficiency of Voluntary Closing Hand and Hook Prostheses

  title={Efficiency of Voluntary Closing Hand and Hook Prostheses},
  author={Gerwin Smit and Dick H. Plettenburg},
  journal={Prosthetics and Orthotics International},
  pages={411 - 427}
The Delft Institute of Prosthetics and Orthotics has started a research program to develop an improved voluntary closing, body-powered hand prosthesis. [] Key Method Five commercially available voluntary closing terminal devices were mechanically tested: three hands [Hosmer APRL VC hand, Hosmer Soft VC Male hand, Otto Bock 8K24] and two hooks [Hosmer APRL VC hook, TRS Grip 2S]. The test results serve as a design guideline for future prostheses.

Efficiency of voluntary opening hand and hook prosthetic devices: 24 years of development?

This study objectively evaluate the mechanical performance of adult-size voluntary opening (VO) prosthetic terminal devices and select the best tested device, finding no improvements in VO devices compared with the data from 1987.

Pneumatic Pinch Force Magnification in Voluntary Closing Hand Prostheses

Body powered voluntary closing (VC) hand prostheses allow users to proportionally control grasping devices in a very intuitive sense using the concept of extended physiological proprioception (EPP).

High Cable Forces Deteriorate Pinch Force Control in Voluntary-Closing Body-Powered Prostheses

High cable forces lead to reduced pinch force control during object manipulation, which implies that low cable operation forces should be a key design requirement for voluntary-closing BPPs.

A need for a more user-centered design in body powered prostheses

The capacities and limitations of prosthetic users will aid in choosing and redesigning future BPPs to prevent non-use, and it remains unclear if these force levels are sufficient to comfortably operate a BPP, or too low leading to non- use.

Mechanical evaluation of the "Hüfner hand" prosthesis.

  • G. Smit
  • Medicine
    Prosthetics and orthotics international
  • 2020
The design of the Hüfner hand, combined with data presented in this study, can serve as guidelines for the design of a new generation of body-powered hands.

Investigation of a passive capstan based grasp enhancement feature in a voluntary-closing prosthetic terminal device

A new type of capstan-based passive brake mechanism in a voluntary-closing prosthetic terminal device that does not require a physical user input to engage or disengage the lock, adding a benefit over the existing mechanisms.

WILMER Appealing Voluntary Closing Prehensor

In order to improve the functional performance of the WILMER appealing prehensor for toddlers, the Delft Institute of Prosthetics and Orthotics suggested to transform the operating principle of this split-hook from voluntary opening to voluntary closing.

Increased Pinch Force of Body Powered Prosthetic Hand with Pneumatic Force Servo

The goal of this study is to create a low-weight prosthetic hand that is easy to control and provides feedback to the user and the mechanism designed in this study will make the DCH available for daily use to a wider range of people compared to the D CH without FDV.

Design and evaluation of voluntary opening and voluntary closing prosthetic terminal device.

A simple design that fulfills requirements while allowing the user to switch easily between modes is demonstrated and a rugged split-hook prototype is described.

The Lightweight Delft Cylinder Hand: First Multi-Articulating Hand That Meets the Basic User Requirements

The Delft Cylinder Hand is presented, a body powered prosthetic hand which mass is 55%-68% lower than that of the lightest current prosthetic hands, operates faster, has an anthropomorphic shape, and provides proprioceptive force and position feedback.



Upper Limb Prosthetic Terminal Devices : Hands Versus Hooks

This challenge will doubtlessly keep researchers in prosthetics, and now those involved in ro­ botics, busy with the task of trying to duplicate the kinematic and sensory capabilities of the human hand for years to come.

Basic requirements for upper extremity prostheses: the WILMER approach

  • D. Plettenburg
  • Medicine
    Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286)
  • 1998
A lot still has to be done in developing new prosthetic devices that really fulfil the basic needs of a patient with an arm defect and by soundly informing and educating the patient and by proper use of the state of the art in upper extremity prosthetics, a lot is gained in really helping the patient.

Methods for reducing energy dissipation in cosmetic gloves.

Two methods for reducing hysteresis in cosmetic gloves are proposed, that may be applied independently or in combination and several properties of the cosmetic glove were determined.

Upper limb prosthesis use and abandonment: A survey of the last 25 years

This review presents an analytical and comparative survey of upper limb prosthesis acceptance and abandonment as documented over the past 25 years, detailing areas of consumer dissatisfaction and

Axilla Bypass Ring for Shoulder Harnesses for Upper-limb Prostheses

Subjective responses to initial testing by amputees suggest the ring helps relieve the discomfort and the development and testing of a ring to relieve pressure in the axilla are reported.

Control strategy for upper-limb prostheses

  • D. Childress
  • Medicine
    Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286)
  • 1998
In this paper, a design strategy guided by some theoretical control concepts and physiological knowledge is described and a preliminary design based on this strategy is proposed.

Atlas of Limb Prosthetics: Surgical, Prosthetic, and Rehabilitation Principles

The choice between limb salvage and amputation planning for optimal function in amputation surgery and upper limb kinesiology and functional characteristics of the upper limb upper limb prosthetic training the lower limb.

Effects of Proprioceptive Motion Feedback on Sighted and Non-Sighted Control of a Virtual Hand Prosthesis

Preliminary results suggest that proprioception improves movement accuracy and ease of system use in the absence of vision.