The i-LIMB Hand and the DMC Plus Hand Compared

Otr, Olga Van Der Niet; Reinders-Messelink, Heleen A.; Bongers, Raoul M.; Bouwsema, Hanneke; Sluis, Corry K. van der

doi:10.3109/03093641003767207

Cited by 68 publications

(68 citation statements)

References 8 publications

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“…In an earlier study, we presented a case in which we compared the multiarticulated i-LIMB hand and the single-joint DMC plus hand [1]. Surprisingly, we found no clear functional advantage for the i-LIMB over the DMC plus hand.…”

Section: Introductionmentioning

confidence: 72%

Functionality of i-LIMB and i-LIMB Pulse hands: Case report

Niet¹,

Bongers²,

Sluis

2013

J Rehabil Res Dev

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Abstract-The availability of various multiarticulated prosthetic hands makes determining differences in functionality between these hands relevant. The current study asked whether the functionality of these hands increased with time of use and whether grip force and robustness improved. A 45-year-old man with wrist disarticulation used the i-LIMB and the i-LIMB Pulse hands in a series of tests covering all functional levels as described in the framework of the International Classification of Functioning, Disability and Health. Using the i-LIMB for 1 yr improved Southampton Hand Assessment Procedure function scores. However, the i-LIMB Pulse did not improve much over 5 mo of training, possibly because of the intense training in the month prior to the first i-LIMB Pulse tests. The i-LIMB Pulse hand generally showed higher scores on the tests and better grip strength and robustness than the i-LIMB. The i-LIMB Pulse has overcome the shortcomings of the i-LIMB hand. The preset grip patterns simplified the complex control of the multiarticulated i-LIMB hand, which contributed to patient satisfaction.

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Section: Introductionmentioning

confidence: 72%

Functionality of i-LIMB and i-LIMB Pulse hands: Case report

Niet¹,

Bongers²,

Sluis

2013

J Rehabil Res Dev

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“…Body-powered hand prostheses require that the user deliver an uncomfortably high activation force (60-130 N) to produce only a small pinch force of 15 N [5][6]. Also, electric hand prostheses with articulating fingers produce a relatively low pinch force of 15 to 34 N [7][8][9]. The cosmetic glove counteracts hand closing, therefore reducing the pinch force in articulating electric hands and in voluntary-closing body-powered hands [5,10].…”

Section: Problems With Current Hand Prosthesesmentioning

confidence: 99%

Comparison of mechanical properties of silicone and PVC (polyvinylchloride) cosmetic gloves for articulating hand prostheses

Smit

Plettenburg²

2013

JRRD

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Abstract-Current articulating electric and body-powered hands have a lower pinch force (15-34 N) than electric hands with stiff fingers (55-100 N). The cosmetic glove, which covers a hand prosthesis, negatively affects the mechanical efficiency of a prosthesis. The goal of this study is to mechanically compare polyvinylchloride (PVC) and silicone cosmetic gloves and quantify the stiffness of the finger joints, the required actuation energy, and the energy dissipation during joint articulation. Six cosmetic gloves, identical in size but made from different materials, were mechanically tested: three PVC and three silicone. The silicone gloves required less work and dissipated less energy during flexing. They also had a lower joint stiffness and required a lower maximum joint torque. Based on energy requirements, joint stiffness, and required joint torque, the tested silicone glove is most suitable for application on an articulating hand prosthesis.

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“…A BP prosthetic hand requires up to 2,292 Nmm of energy to pinch 15 N, a user effort that is uncomfortably high [8]. User needs of people with hand amputation include a higher pinch force [9], a lower activation effort [8], and a lower hand mass [10]. To achieve these goals, an efficient energy transmission is required.…”

Section: Problemmentioning

confidence: 99%

Design and evaluation of two different finger concepts for body-powered prosthetic hand

2013

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Abstract-The goal of this study was to find an efficient method of energy transmission for application in an anthropomorphic underactuated body-powered (BP) prosthetic hand. A pulley-cable finger and a hydraulic cylinder finger were designed and tested to compare the pulley-cable transmission principle with the hydraulic cylinder transmission principle. Both fingers had identical dimensions and a low mass. The only thing that differed between the fingers was the transmission principle. The input energy was measured for a number of tasks. The pulley-cable finger required more input energy than the hydraulic cylinder finger to perform the tasks. This was especially the case in tasks that required high pinch forces. The hydraulic cylinder transmission is therefore the more efficient transmission for application in BP prosthetic fingers.

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The i-LIMB Hand and the DMC Plus Hand Compared

Cited by 68 publications

References 8 publications

Functionality of i-LIMB and i-LIMB Pulse hands: Case report

Functionality of i-LIMB and i-LIMB Pulse hands: Case report

Comparison of mechanical properties of silicone and PVC (polyvinylchloride) cosmetic gloves for articulating hand prostheses

Design and evaluation of two different finger concepts for body-powered prosthetic hand

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