Dielectric elastomers as actuators for upper limb prosthetics: Challenges and opportunities

Biddiss, Elaine; Chau, Tom

doi:10.1016/j.medengphy.2007.05.011

Cited by 133 publications

(87 citation statements)

References 70 publications

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“…In the future, techniques like composite tissue allotransplantation, or advanced myolectric prostheses, combined with targeted reinnervation surgery, or dielectric elastomers [28][29][30] could provide us with readily available, easy-to-use components for reconstruction of the upper extremity. At present these remain, however, experimental techniques, and locally available tissue, or of pedicled or free flaps must be used for reconstruction.…”

Section: Further Treatment Optionsmentioning

confidence: 99%

Microvascular reconstructions after extensive soft tissue sarcoma resections in the upper limb

Barner-Rasmussen¹,

Popov²,

Böhling³

et al. 2010

European Journal of Surgical Oncology (EJSO)

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Methods: 20 patients with STS of the upper extremity were treated with excision and microvascular reconstruction. RT was administered if surgical margins were less than 25mm. M A N U S C R I P T A C C E P T E D ARTICLE IN PRESSResults were evaluated retrospectively.Results: 20 free flaps were performed and no flaps were lost. There was no operative mortality, and wound complication rate was 15%. Median follow-up length was 74 months.Five-year local recurrence-free survival was 57%, metastasis-free survival 67%, disease-free survival 45% and disease-specific overall survival 80%.

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Section: Further Treatment Optionsmentioning

confidence: 99%

Microvascular reconstructions after extensive soft tissue sarcoma resections in the upper limb

Barner-Rasmussen¹,

Popov²,

Böhling³

et al. 2010

European Journal of Surgical Oncology (EJSO)

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“…About a decade ago it was discovered that voltage-actuated strains over 100% could be achieved. 1 The discovery has stimulated intense development of muscle-like transducers for broad range of applications, including soft robots, 2 artificial limbs, 3 Braille displays, 4 microelectromechanical systems, 5 bio-stimulation pads, 6 adaptive optics, [7][8][9] and generators. [10][11][12] While elastomers can readily be stretched several times their initial length by a mechanical force, achieving large deformations by applying a voltage has been difficult.…”

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confidence: 99%

Giant, voltage-actuated deformation of a dielectric elastomer under dead load

Huang¹,

Li²,

Foo³

et al. 2012

Applied Physics Letters

179

114

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Far greater voltage-actuated deformation is achievable for a dielectric elastomer under equal-biaxial dead load than under rigid constraint usually employed. Areal strains of 488% are demonstrated. The dead load suppresses electric breakdown, enabling the elastomer to survive the snap-through electromechanical instability. The breakdown voltage is found to increase with the voltage ramp rate. A nonlinear model for viscoelastic dielectric elastomers is developed and shown to be consistent with the experimental observations.

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“…Robotic actuators are also highly varied in prosthetics and are beyond the the scope of this review. However, a number of systems have previously been discussed [28,29,30,31,32].…”

Section: Review Of Current Intracortical Electrode Systemsmentioning

confidence: 99%

Implanted intracortical electrodes as chronic neural interfaces to the central nervous system

Henderson

2015

Preprint

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Recent developments in neural interfaces show that it is possible to have fine control of a robotic prosthetic by interfacing with the motor cortex of the human brain. Development of long term systems for this purpose is a challenging task with many different possibilities. Intracortical implants have shown the most promise in providing enough signal selectivity and throughput for complex control systems with many degrees of freedom. Intracortical systems generally fall into two categories: MEMS devices and bundle of wire systems. While both show promise, MEMS systems have been greatly popularized due to their reproducibility. In particular, the Michigan probe and Utah microarray are often used as a base for construction of more complex intracortical systems. However, these systems still carry many downsides. Their long-term viability is questionable, with mixed results. The effects of damage from implantation are still inconclusive and immune responses remain a problem for long-term use. While there is some promising research in the use of bioactive molecules and biocompatible materials to prevent immune responses, more controlled study is needed before intracortical systems become widespread.

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Dielectric elastomers as actuators for upper limb prosthetics: Challenges and opportunities

Cited by 133 publications

References 70 publications

Microvascular reconstructions after extensive soft tissue sarcoma resections in the upper limb

Microvascular reconstructions after extensive soft tissue sarcoma resections in the upper limb

Giant, voltage-actuated deformation of a dielectric elastomer under dead load

Implanted intracortical electrodes as chronic neural interfaces to the central nervous system

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