Design and Anchorage Dependence of Shape Memory Alloy Actuators on Enhanced Voiding of a Bladder

Faezeh Arab Hassani, Gil Gerald Lasam Gammad, Roshini Priya Mogan, Tze Kiat Ng, Tricia Li Chuen Kuo, Lay Guat Ng, Percy Luu, Nitish V Thakor, Shih Cheng Yen, Chengkuo Lee

Research output: Contribution to journalArticle

Abstract

The use of shape memory alloy (SMA) actuators to restore voiding of bladder for myogenic under active bladder (UAB) patients is proposed recently. Even though previous work show the unique capability of this technology for bladder voiding, the low voiding volume and high energy consumption of the device limit the advancement of this technique. This study proposes a novel approach using an interlaced configuration to overcome these limitations. In this device, SMA actuators are threaded through rigid anchor points of the flexible vest. The novel anchorage of SMA actuators provides more conformability for the vest and lower energy consumption for the device, while the new interlaced configuration enhances the voiding volume. The device is tested initially on a rubber model for the bladder, then it is implanted in an anesthetized rat, and a voiding volume of more than 20% at 4 V is successfully achieved. A commercial force sensor is integrated with the device to make it suitable for neurogenic UAB patients. The sensor provides a feedback control signal to the patient to initiate the actuation of the device upon fullness of bladder. The overall system is a promising advance over the state-of-the-art providing bladder voiding in UAB patients.

Original languageEnglish (US)
Article number1700184
JournalAdvanced Materials Technologies
Volume3
Issue number1
DOIs
StatePublished - Jan 1 2018
Externally publishedYes

Fingerprint

Shape memory effect
Actuators
Energy utilization
Rubber
Sensors
Anchors
Feedback control
Rats

Keywords

  • anchorage and design
  • flexible electronics
  • force sensors
  • neurogenic under active bladder
  • shape memory alloy actuators

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Industrial and Manufacturing Engineering

Cite this

Hassani, F. A., Gammad, G. G. L., Mogan, R. P., Ng, T. K., Kuo, T. L. C., Ng, L. G., ... Lee, C. (2018). Design and Anchorage Dependence of Shape Memory Alloy Actuators on Enhanced Voiding of a Bladder. Advanced Materials Technologies, 3(1), [1700184]. https://doi.org/10.1002/admt.201700184

Design and Anchorage Dependence of Shape Memory Alloy Actuators on Enhanced Voiding of a Bladder. / Hassani, Faezeh Arab; Gammad, Gil Gerald Lasam; Mogan, Roshini Priya; Ng, Tze Kiat; Kuo, Tricia Li Chuen; Ng, Lay Guat; Luu, Percy; Thakor, Nitish V; Yen, Shih Cheng; Lee, Chengkuo.

In: Advanced Materials Technologies, Vol. 3, No. 1, 1700184, 01.01.2018.

Research output: Contribution to journalArticle

Hassani, FA, Gammad, GGL, Mogan, RP, Ng, TK, Kuo, TLC, Ng, LG, Luu, P, Thakor, NV, Yen, SC & Lee, C 2018, 'Design and Anchorage Dependence of Shape Memory Alloy Actuators on Enhanced Voiding of a Bladder', Advanced Materials Technologies, vol. 3, no. 1, 1700184. https://doi.org/10.1002/admt.201700184
Hassani, Faezeh Arab ; Gammad, Gil Gerald Lasam ; Mogan, Roshini Priya ; Ng, Tze Kiat ; Kuo, Tricia Li Chuen ; Ng, Lay Guat ; Luu, Percy ; Thakor, Nitish V ; Yen, Shih Cheng ; Lee, Chengkuo. / Design and Anchorage Dependence of Shape Memory Alloy Actuators on Enhanced Voiding of a Bladder. In: Advanced Materials Technologies. 2018 ; Vol. 3, No. 1.
@article{4ed0e57c515340eda28a0b15975e3613,
title = "Design and Anchorage Dependence of Shape Memory Alloy Actuators on Enhanced Voiding of a Bladder",
abstract = "The use of shape memory alloy (SMA) actuators to restore voiding of bladder for myogenic under active bladder (UAB) patients is proposed recently. Even though previous work show the unique capability of this technology for bladder voiding, the low voiding volume and high energy consumption of the device limit the advancement of this technique. This study proposes a novel approach using an interlaced configuration to overcome these limitations. In this device, SMA actuators are threaded through rigid anchor points of the flexible vest. The novel anchorage of SMA actuators provides more conformability for the vest and lower energy consumption for the device, while the new interlaced configuration enhances the voiding volume. The device is tested initially on a rubber model for the bladder, then it is implanted in an anesthetized rat, and a voiding volume of more than 20{\%} at 4 V is successfully achieved. A commercial force sensor is integrated with the device to make it suitable for neurogenic UAB patients. The sensor provides a feedback control signal to the patient to initiate the actuation of the device upon fullness of bladder. The overall system is a promising advance over the state-of-the-art providing bladder voiding in UAB patients.",
keywords = "anchorage and design, flexible electronics, force sensors, neurogenic under active bladder, shape memory alloy actuators",
author = "Hassani, {Faezeh Arab} and Gammad, {Gil Gerald Lasam} and Mogan, {Roshini Priya} and Ng, {Tze Kiat} and Kuo, {Tricia Li Chuen} and Ng, {Lay Guat} and Percy Luu and Thakor, {Nitish V} and Yen, {Shih Cheng} and Chengkuo Lee",
year = "2018",
month = "1",
day = "1",
doi = "10.1002/admt.201700184",
language = "English (US)",
volume = "3",
journal = "Advanced Materials Technologies",
issn = "2365-709X",
publisher = "Wiley-Blackwell",
number = "1",

}

TY - JOUR

T1 - Design and Anchorage Dependence of Shape Memory Alloy Actuators on Enhanced Voiding of a Bladder

AU - Hassani, Faezeh Arab

AU - Gammad, Gil Gerald Lasam

AU - Mogan, Roshini Priya

AU - Ng, Tze Kiat

AU - Kuo, Tricia Li Chuen

AU - Ng, Lay Guat

AU - Luu, Percy

AU - Thakor, Nitish V

AU - Yen, Shih Cheng

AU - Lee, Chengkuo

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The use of shape memory alloy (SMA) actuators to restore voiding of bladder for myogenic under active bladder (UAB) patients is proposed recently. Even though previous work show the unique capability of this technology for bladder voiding, the low voiding volume and high energy consumption of the device limit the advancement of this technique. This study proposes a novel approach using an interlaced configuration to overcome these limitations. In this device, SMA actuators are threaded through rigid anchor points of the flexible vest. The novel anchorage of SMA actuators provides more conformability for the vest and lower energy consumption for the device, while the new interlaced configuration enhances the voiding volume. The device is tested initially on a rubber model for the bladder, then it is implanted in an anesthetized rat, and a voiding volume of more than 20% at 4 V is successfully achieved. A commercial force sensor is integrated with the device to make it suitable for neurogenic UAB patients. The sensor provides a feedback control signal to the patient to initiate the actuation of the device upon fullness of bladder. The overall system is a promising advance over the state-of-the-art providing bladder voiding in UAB patients.

AB - The use of shape memory alloy (SMA) actuators to restore voiding of bladder for myogenic under active bladder (UAB) patients is proposed recently. Even though previous work show the unique capability of this technology for bladder voiding, the low voiding volume and high energy consumption of the device limit the advancement of this technique. This study proposes a novel approach using an interlaced configuration to overcome these limitations. In this device, SMA actuators are threaded through rigid anchor points of the flexible vest. The novel anchorage of SMA actuators provides more conformability for the vest and lower energy consumption for the device, while the new interlaced configuration enhances the voiding volume. The device is tested initially on a rubber model for the bladder, then it is implanted in an anesthetized rat, and a voiding volume of more than 20% at 4 V is successfully achieved. A commercial force sensor is integrated with the device to make it suitable for neurogenic UAB patients. The sensor provides a feedback control signal to the patient to initiate the actuation of the device upon fullness of bladder. The overall system is a promising advance over the state-of-the-art providing bladder voiding in UAB patients.

KW - anchorage and design

KW - flexible electronics

KW - force sensors

KW - neurogenic under active bladder

KW - shape memory alloy actuators

UR - http://www.scopus.com/inward/record.url?scp=85040666566&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85040666566&partnerID=8YFLogxK

U2 - 10.1002/admt.201700184

DO - 10.1002/admt.201700184

M3 - Article

AN - SCOPUS:85040666566

VL - 3

JO - Advanced Materials Technologies

JF - Advanced Materials Technologies

SN - 2365-709X

IS - 1

M1 - 1700184

ER -