TY - JOUR
T1 - Relationship of Catheter Contact Angle and Contact Force with Contact Area on the Surface of Heart Muscle Tissue in Cardiac Catheter Ablation
AU - Masnok, Kriengsak
AU - Watanabe, Nobuo
N1 - Funding Information:
This research was supported by the Research and Development Supporting Fund from the Shibaura Institute of Technology, and a Scholarship from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
Funding Information:
The authors thank Abbott Medical Japan and Boston Scientific Japan for their kind provision of catheters. Both authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by KM and NW. The first draft of the manuscript was written by KM and both authors commented on subsequent drafts of the manuscript. All authors read and approved the final manuscript. This research was supported by the Research and Development Supporting Fund from the Shibaura Institute of Technology, and a Scholarship from the Ministry of Education, Culture, Sports, Science and Technology of Japan. The datasets generated during and/or analyzed during the current study are available from the corresponding author upon reasonable request. MATLAB (Version 2019a) and GraphPad Prism software (Version 8.4.3) were used in this study. Code generated and/or analyzed during the current study are available from the corresponding author upon reasonable request. Both authors received consulting/advisory support from Abbott Medical Japan and Boston Scientific Japan. The authors declare that they have no conflicts of interest. No human studies were carried out by the authors for this article.
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/8
Y1 - 2021/8
N2 - Purpose: The aims of this study were to develop an experimental procedure for setting the catheter angle with respect to the surface of the heart muscle and the catheter contact force and to investigate the catheter contact area on the heart muscle as a function of catheter contact angle and force. Methods: Visualization tests were performed for 5 contact angles (0°, 30°, 45°, 60°, and 90°) and 8 contact forces (2, 4, 6, 10, 15, 20, 30, and 40 gf). Each experiment was repeated 6 times with 2 different commercially available catheter tips. Results: The morphology of the contact area was classified into rectangular, circular, ellipsoidal, and semi-ellipsoidal. The correlation between contact force and contact area was a logarithmic function; increasing contact force was associated with increased contact area. At the same contact force, the correlation between contact angle and contact area was inverse; decreasing contact angle was associated with a corresponding increase in contact area. Conclusion: Both the catheter contact angle and contact force substantially impact the contact area and morphology in catheter ablation procedures.
AB - Purpose: The aims of this study were to develop an experimental procedure for setting the catheter angle with respect to the surface of the heart muscle and the catheter contact force and to investigate the catheter contact area on the heart muscle as a function of catheter contact angle and force. Methods: Visualization tests were performed for 5 contact angles (0°, 30°, 45°, 60°, and 90°) and 8 contact forces (2, 4, 6, 10, 15, 20, 30, and 40 gf). Each experiment was repeated 6 times with 2 different commercially available catheter tips. Results: The morphology of the contact area was classified into rectangular, circular, ellipsoidal, and semi-ellipsoidal. The correlation between contact force and contact area was a logarithmic function; increasing contact force was associated with increased contact area. At the same contact force, the correlation between contact angle and contact area was inverse; decreasing contact angle was associated with a corresponding increase in contact area. Conclusion: Both the catheter contact angle and contact force substantially impact the contact area and morphology in catheter ablation procedures.
KW - Catheter ablation
KW - Contact angle
KW - Contact area
KW - Contact force
KW - Tachyarrhythmia
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U2 - 10.1007/s13239-021-00529-8
DO - 10.1007/s13239-021-00529-8
M3 - Article
C2 - 33723738
AN - SCOPUS:85102525328
SN - 1869-408X
VL - 12
SP - 407
EP - 417
JO - Cardiovascular Engineering and Technology
JF - Cardiovascular Engineering and Technology
IS - 4
ER -