Optimized deployment of heat-activated surgical staples using thermography

Y  Ng; C  Song; D  McLean; S M  Shimi; T G  Frank; A  Cuschieri; P A  Campbell

doi:10.1063/1.1601305

Optimized deployment of heat-activated surgical staples using thermography

Y Ng, C Song, D McLean, S M Shimi, T G Frank, A Cuschieri, P A Campbell

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We have developed a suture analogue, suitable for use in laparoscopic surgery, in the form of a staple constructed from NiTi shape memory alloy (SMA). Closure of the staple is effected by resistive heating via a (50-100 ms) pulse of electrical current (approximate to5 A). In order to optimize deployment protocols and minimize thermal collateral damage to tissue, the heat sink effect of the electrical contact rails, as well as the presence of contact hotspots must be considered. Here, we have employed high-resolution thermal imaging to observe the dynamic temperature distributions in SMA staples as a function of the pulse parameters. This has facilitated process optimization and also provided data from which to validate computational finite-element models of the heat transport phenomena. (C) 2003 American Institute of Physics.

Original language	English
Pages (from-to)	1884-1886
Number of pages	3
Journal	Applied Physics Letters
Volume	83
DOIs	https://doi.org/10.1063/1.1601305
Publication status	Published - 1 Sept 2003

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10.1063/1.1601305

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title = "Optimized deployment of heat-activated surgical staples using thermography",

abstract = "We have developed a suture analogue, suitable for use in laparoscopic surgery, in the form of a staple constructed from NiTi shape memory alloy (SMA). Closure of the staple is effected by resistive heating via a (50-100 ms) pulse of electrical current (approximate to5 A). In order to optimize deployment protocols and minimize thermal collateral damage to tissue, the heat sink effect of the electrical contact rails, as well as the presence of contact hotspots must be considered. Here, we have employed high-resolution thermal imaging to observe the dynamic temperature distributions in SMA staples as a function of the pulse parameters. This has facilitated process optimization and also provided data from which to validate computational finite-element models of the heat transport phenomena. (C) 2003 American Institute of Physics.",

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AU - Ng, Y

AU - Song, C

AU - McLean, D

AU - Shimi, S M

AU - Frank, T G

AU - Cuschieri, A

AU - Campbell, P A

PY - 2003/9/1

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N2 - We have developed a suture analogue, suitable for use in laparoscopic surgery, in the form of a staple constructed from NiTi shape memory alloy (SMA). Closure of the staple is effected by resistive heating via a (50-100 ms) pulse of electrical current (approximate to5 A). In order to optimize deployment protocols and minimize thermal collateral damage to tissue, the heat sink effect of the electrical contact rails, as well as the presence of contact hotspots must be considered. Here, we have employed high-resolution thermal imaging to observe the dynamic temperature distributions in SMA staples as a function of the pulse parameters. This has facilitated process optimization and also provided data from which to validate computational finite-element models of the heat transport phenomena. (C) 2003 American Institute of Physics.

AB - We have developed a suture analogue, suitable for use in laparoscopic surgery, in the form of a staple constructed from NiTi shape memory alloy (SMA). Closure of the staple is effected by resistive heating via a (50-100 ms) pulse of electrical current (approximate to5 A). In order to optimize deployment protocols and minimize thermal collateral damage to tissue, the heat sink effect of the electrical contact rails, as well as the presence of contact hotspots must be considered. Here, we have employed high-resolution thermal imaging to observe the dynamic temperature distributions in SMA staples as a function of the pulse parameters. This has facilitated process optimization and also provided data from which to validate computational finite-element models of the heat transport phenomena. (C) 2003 American Institute of Physics.

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M3 - Article

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VL - 83

SP - 1884

EP - 1886

JO - Applied Physics Letters

JF - Applied Physics Letters

ER -

Optimized deployment of heat-activated surgical staples using thermography

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