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Nd:YAG laser bipolar dissector--preliminary results.
Y Nishiwaki1, N Daikuzono, S N Joffe
1Department of Surgery, Numazu Medical Association Hospital, Japan.
Lasers in Surgery and Medicine
|January 1, 1992
Summary
A new laser bipolar dissector (LBD) effectively achieves hemostatic cutting of large blood vessels and parenchymal organs in animal models. This innovative surgical tool shows promise for clinical applications in precise tissue dissection.
Area of Science:
- Surgical Technology
- Biomedical Engineering
- Laser Medicine
Background:
- Hemostasis during surgical dissection of vascular and parenchymal organs remains a critical challenge.
- Existing methods for transecting tissues can lead to significant blood loss and complications.
Purpose of the Study:
- To develop and evaluate a novel laser bipolar dissector (LBD) for effective hemostatic cutting.
- To assess the LBD's performance in transecting both large blood vessels and parenchymal organs in an animal model.
Main Methods:
- Development of a laser bipolar dissector utilizing a 1,064 nm Nd:YAG wavelength.
- Low power settings (15-25 W) for precise laser emission from synthetic sapphire probes.
- In vivo animal experiments on New Zealand white rabbits, including transection of major vessels and organs.
Main Results:
- The LBD achieved hemostatic transection of veins up to 5 mm and arteries up to 2 mm in diameter without rebleeding.
- Complete hemostasis was observed during the transection of parenchymal organs like the liver and lung.
- Successful partial hepatectomy, splenectomy, and left nephrectomy were performed using the LBD alone, with no direct postoperative complications observed up to 3 weeks.
Conclusions:
- The laser bipolar dissector demonstrates significant potential for hemostatic transection of large vessels.
- The LBD offers a promising solution for dissection of vascular and parenchymal organs in clinical surgical settings.
