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Water jet angioplasty--an experimental study
M Kobayashi1, S Sawada, N Tanigawa
1Department of Radiology, Tottori University Hospital, Yonago, Japan.
Acta Radiologica (Stockholm, Sweden : 1987)
|July 1, 1995
Summary
Water jet angioplasty shows promise for acute arterial obstructions. This study found it effective in clearing fresh blockages but not hardened ones, suggesting potential for thrombus treatment.
Area of Science:
- Cardiovascular research
- Medical device engineering
Background:
- Arterial occlusions pose significant health risks.
- Novel angioplasty techniques are needed to improve treatment efficacy.
Purpose of the Study:
- To evaluate the safety and effectiveness of water jet angioplasty.
- To assess its performance in various simulated and in vivo arterial conditions.
Main Methods:
- In vitro studies using agar phantoms and autopsied aortas.
- In vivo experiments on mongrel dogs with acute and chronic arterial occlusions.
- Histopathological analysis of vascular tissue damage.
Main Results:
- Water jet angioplasty demonstrated erosive capability on agar at specific rates and distances.
- Histopathology revealed intimal ablation and elastic fiber damage, influenced by catheter angle.
- Effective in treating acute obstructions but not chronic ones in vivo.
Conclusions:
- Water jet angioplasty shows potential for treating acute arterial obstructions, particularly those caused by thrombus.
- Further research is warranted to optimize safety and efficacy, considering factors like injection rate and catheter positioning.