Influence of temperature-dependent tissue parameters on monopolar coagulation model
The use of high-frequency (HF) generators for HF surgical treatment of biological tissue has become an indispensable part of today's surgical applications of all kinds. Generally, HF alternating electric currents between 300 kHz and 1 MHz are used to induce hemostasis by heating at the cellular...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2022-09-01
|
| Series: | Current Directions in Biomedical Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/cdbme-2022-1119 |
| _version_ | 1811159465194422272 |
|---|---|
| author | Busch Christoph Rupitsch Stefan J. Moeller Knut |
| author_facet | Busch Christoph Rupitsch Stefan J. Moeller Knut |
| author_sort | Busch Christoph |
| collection | DOAJ |
| description | The use of high-frequency (HF) generators for HF surgical treatment of biological tissue has become an indispensable part of today's surgical applications of all kinds. Generally, HF alternating electric currents between 300 kHz and 1 MHz are used to induce hemostasis by heating at the cellular level. This effect can be attributed to Joule heating, in which a current dissipated conductor converts the electrical energy into thermal energy. However, sound evidence on the reliability and effectiveness of application-specific HF generator modes is not sufficiently available. Usually, the evidence takes place empirically by means of preclinical or clinical studies. Nevertheless, a corresponding empirical data collection is time- and cost-intensive. Therefore, physiological and statistical modeling provides the opportunity to relate tissue response to the applied electrical energy to obtain a prediction of the tissue reaction. In this contribution, we establish a monopolar coagulation model of an already well-known model approach based on Pennes bioheat equation. Additionally, the vaporization of tissue water at the water boiling point is considered. Furthermore, a variation of temperature-dependent tissue parameters was performed to analyze their impact on the model output. The simulation results demonstrate that the initial electrical conductivity has the greatest influence on the temperature distribution as well as on the time until the tissue temperature reached the boiling point of water. In contrast, the tissue water content has the least impact on the model output. Depending on the desired coagulation effect, HF power control as a function of electrical conductivity or its reciprocal, tissue resistance, must be added next in an improved model. |
| first_indexed | 2024-04-10T05:41:34Z |
| format | Article |
| id | doaj.art-eb256d4306914682b0051f6e0b9b2e22 |
| institution | Directory Open Access Journal |
| issn | 2364-5504 |
| language | English |
| last_indexed | 2024-04-10T05:41:34Z |
| publishDate | 2022-09-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Current Directions in Biomedical Engineering |
| spelling | doaj.art-eb256d4306914682b0051f6e0b9b2e222023-03-06T10:24:52ZengDe GruyterCurrent Directions in Biomedical Engineering2364-55042022-09-018246646910.1515/cdbme-2022-1119Influence of temperature-dependent tissue parameters on monopolar coagulation modelBusch Christoph0Rupitsch Stefan J.1Moeller Knut2Furtwangen University, Institute of Technical Medicine, 78054 Villingen-Schwenningen, GermanyDepartment of Microsystems Engineering, Georges-Köhler-Allee 106,Freiburg im Breisgau, GermanyFurtwangen University, Institute of Technical Medicine, 78054Villingen-Schwenningen, GermanyThe use of high-frequency (HF) generators for HF surgical treatment of biological tissue has become an indispensable part of today's surgical applications of all kinds. Generally, HF alternating electric currents between 300 kHz and 1 MHz are used to induce hemostasis by heating at the cellular level. This effect can be attributed to Joule heating, in which a current dissipated conductor converts the electrical energy into thermal energy. However, sound evidence on the reliability and effectiveness of application-specific HF generator modes is not sufficiently available. Usually, the evidence takes place empirically by means of preclinical or clinical studies. Nevertheless, a corresponding empirical data collection is time- and cost-intensive. Therefore, physiological and statistical modeling provides the opportunity to relate tissue response to the applied electrical energy to obtain a prediction of the tissue reaction. In this contribution, we establish a monopolar coagulation model of an already well-known model approach based on Pennes bioheat equation. Additionally, the vaporization of tissue water at the water boiling point is considered. Furthermore, a variation of temperature-dependent tissue parameters was performed to analyze their impact on the model output. The simulation results demonstrate that the initial electrical conductivity has the greatest influence on the temperature distribution as well as on the time until the tissue temperature reached the boiling point of water. In contrast, the tissue water content has the least impact on the model output. Depending on the desired coagulation effect, HF power control as a function of electrical conductivity or its reciprocal, tissue resistance, must be added next in an improved model.https://doi.org/10.1515/cdbme-2022-1119monopolar coagulationhf modelingfem simulationtemperature-dependent tissue parameter |
| spellingShingle | Busch Christoph Rupitsch Stefan J. Moeller Knut Influence of temperature-dependent tissue parameters on monopolar coagulation model Current Directions in Biomedical Engineering monopolar coagulation hf modeling fem simulation temperature-dependent tissue parameter |
| title | Influence of temperature-dependent tissue parameters on monopolar coagulation model |
| title_full | Influence of temperature-dependent tissue parameters on monopolar coagulation model |
| title_fullStr | Influence of temperature-dependent tissue parameters on monopolar coagulation model |
| title_full_unstemmed | Influence of temperature-dependent tissue parameters on monopolar coagulation model |
| title_short | Influence of temperature-dependent tissue parameters on monopolar coagulation model |
| title_sort | influence of temperature dependent tissue parameters on monopolar coagulation model |
| topic | monopolar coagulation hf modeling fem simulation temperature-dependent tissue parameter |
| url | https://doi.org/10.1515/cdbme-2022-1119 |
| work_keys_str_mv | AT buschchristoph influenceoftemperaturedependenttissueparametersonmonopolarcoagulationmodel AT rupitschstefanj influenceoftemperaturedependenttissueparametersonmonopolarcoagulationmodel AT moellerknut influenceoftemperaturedependenttissueparametersonmonopolarcoagulationmodel |