[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

He et al., 2003 - Google Patents

Assessment of myocardial lesion size during in vitro radio frequency catheter ablation

He et al., 2003

Document ID
14050883016282164142
Author
He D
Bosnos M
Mays M
Marcus F
Publication year
Publication venue
IEEE Transactions on Biomedical Engineering

External Links

Snippet

We report our experience with a system that utilizes changes in several biophysical characteristics of cardiac tissue to determine lesion formation and to estimate lesion size both on and off-line in vitro during radio frequency (RF) energy delivery. We analyzed the …
Continue reading at ieeexplore.ieee.org (other versions)

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/1405—Electrodes having a specific shape
    • A61B2018/1412—Blade
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radiowaves
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00875—Resistance or impedance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00022—Sensing or detecting at the treatment site
    • A61B2017/00026—Conductivity or impedance, e.g. of tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
    • A61B2018/00023—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids closed, i.e. without wound contact by the fluid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/0016—Energy applicators arranged in a two- or three dimensional array
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/01—Measuring temperature of body parts; Diagnostic temperature sensing, e.g. for malignant or inflammed tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/04—Detecting, measuring or recording bioelectric signals of the body of parts thereof
    • A61B5/0402—Electrocardiography, i.e. ECG
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements

Similar Documents

Publication Publication Date Title
He et al. Assessment of myocardial lesion size during in vitro radio frequency catheter ablation
CN111227927B (en) Irreversible electroporation (IRE) based on field, contact force and time
González-Suárez et al. Comparative analysis of different methods of modeling the thermal effect of circulating blood flow during RF cardiac ablation
EP1214007B1 (en) Electrode contact evaluation and ablation system
AU2014203641B2 (en) Detection of ablation electrode contact with tissue
EP2568902A1 (en) System for selecting an ablation procedure based on comparing a biological response with a mathematical model
WO2011034925A1 (en) System and method for predicting lesion size shortly after onset of rf energy delivery
Wittkampf et al. Myocardial temperature response during radiofrequency catheter ablation
CN114052890B (en) Pulse ablation apparatus, pulse ablation system, pulse ablation parameter setting method, and pulse ablation program
EP1076521A2 (en) Electrode having multiple temperature-sensitive junctions
JP7126834B2 (en) Estimated tissue thickness
Cao et al. Using electrical impedance to predict catheter-endocardial contact during RF cardiac ablation
EP3216413B1 (en) Ablation probe with a position sensor and with means for magnetic resonance thermometry
EP3375397B1 (en) Estimation of tissue thickness from rate of change of catheter temperature
Hartung et al. Estimation of temperature during radiofrequency catheter ablation using impedance measurements
McRURY et al. Temperature measurement as a determinant of tissue heating during radiofrequency catheter ablation: an examination of electrode thermistor positioning for measurement accuracy
EP3434214B1 (en) Tissue thickness using pulsed power
Shellock et al. Temperature changes associated with radiofrequency energy–induced heating of bovine capsular tissue: Evaluation of bipolar RF electrodes
Shellock Radiofrequency energy–induced heating of bovine capsular tissue: Temperature changes produced by bipolar versus monopolar electrodes
JP2021146211A (en) Measuring thickness of cardiac wall tissue during ablation
Ferraioli et al. Effective exploitation of prior information in electrical impedance tomography for thermal monitoring of hyperthermia treatments
US20220175268A1 (en) Lesion characterization processes
Nsah et al. Relation between impedance and electrode temperature during radiofrequency catheter ablation of accessory pathways and atrioventricular nodal reentrant tachycardia
Salo Improvement in intracardiac impedance volumes by field extrapolation
Bosnos et al. Early assessment of biophysical parameters predicts lesion formation during RF energy delivery in vitro