Jacques Dorval

1
Harmonic Scalpel

• Jacques Dorval
• Biomedical Engineering Student
• 2 December 2015
• Ethicon http//www.ethicon.com/healthcare-profess
  ionals/products/advanced-energy

2
The Harmonic Scalpel and Cancer

• Scalpel
• What is it, does it do, allowed to do
• How it works
• Why care
• Cancer
• What
• Why
• Studies

http//www.revespcardiol.org/en/acute-ischemia-in-
upper-limb/articulo/90124113/
3
Case 1 Gastrectomy and Colon Cancer

• What?
• -ectomy
• Surgery as cancer treatment
• Patients 1930 (946 v 984)

Image http//www.pubcan.org/printicdotopo.php?id
3652
Chen, Xiao-Long, Xin-Zu Chen, Zheng-Hao Lu, Li
Wang, Kun Yang, Jian-Kun Hu, Bo Zhang, Zhi-Xin
Chen, Jia-Ping Chen, and Zong-Guang Zhou.
"Comparison of Ultrasonic Scalpel versus
Conventional Techniques in Open Gastrectomy for
Gastric Carcinoma Patients A Systematic Review
and Meta-Analysis." ltigtPLoS ONElt/igt. Public
Library of Science, 31 July 2014. Web. 28 Nov.
2015.
4
Results
Chen, Xiao-Long, et all. "Comparison of
Ultrasonic Scalpel versus Conventional
Techniques in Open Gastrectomy for Gastric
Carcinoma Patients A Systematic Review and
Meta-Analysis." ltigtPLoS ONElt/igt. Public Library
of Science, 31 July 2014. Web. 28 Nov. 2015.

• Blood Loss L
• Abdominal Drainage R

5
Results (cont)
Chen, Xiao-Long, et all. "Comparison of
Ultrasonic Scalpel versus Conventional
Techniques in Open Gastrectomy for Gastric
Carcinoma Patients A Systematic Review and
Meta-Analysis." ltigtPLoS ONElt/igt. Public Library
of Science, 31 July 2014. Web. 28 Nov. 2015.

• Gastrointestinal function recovery L
• Total recovery days R

6
Case 2 Dissection of the Neck (for cancer cases)

• What?
• Surgery of neck for
• Removal
• Diagnostic
• Patients 406 (201 v 205)

Imagehttp//oralcancernews.org/wp/study-reveals-g
enetic-diversity-within-tumors-predicts-outcome-in
-head-and-neck-cancer/
Ren, Zhen-Hu, Jian-Lin Xu, Teng-Fei Fan, Tong Ji,
Han-Jiang Wu, and Chen-Ping Zhang. "The Harmonic
Scalpel versus Conventional Hemostasis for Neck
Dissection A Meta-Analysis of the Randomized
Controlled Trials." ltigtPLoS ONElt/igt. Public
Library of Science, 10 July 2015. Web. 28 Nov.
2015.
7
Results
Ren, Zhen-Hu, Jian-Lin Xu, Teng-Fei Fan, Tong Ji,
Han-Jiang Wu, and Chen-Ping Zhang. "The Harmonic
Scalpel versus Conventional Hemostasis for Neck
Dissection A Meta-Analysis of the Randomized
Controlled Trials." ltigtPLoS ONElt/igt. Public
Library of Science, 10 July 2015. Web. 28 Nov.
2015.

• Operation Time L
• Blood Loss R

8
Results (cont)
Ren, Zhen-Hu, Jian-Lin Xu, Teng-Fei Fan, Tong Ji,
Han-Jiang Wu, and Chen-Ping Zhang. "The Harmonic
Scalpel versus Conventional Hemostasis for Neck
Dissection A Meta-Analysis of the Randomized
Controlled Trials." ltigtPLoS ONElt/igt. Public
Library of Science, 10 July 2015. Web. 28 Nov.
2015.

• Drainage L
• Hospitilization Time R

9
Talk

• So why do we care?
• 50 less blood loss
• Around gt30 minute reduction
• Prevention of spread
• Drawbacks
• No significant reduction in hospitilization
• Thermal damage

10
Q A

• P.S. Good luck on upcoming exams!