CN108888335B - Automatic change radio frequency appearance that melts - Google Patents
Automatic change radio frequency appearance that melts Download PDFInfo
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- CN108888335B CN108888335B CN201810654227.6A CN201810654227A CN108888335B CN 108888335 B CN108888335 B CN 108888335B CN 201810654227 A CN201810654227 A CN 201810654227A CN 108888335 B CN108888335 B CN 108888335B
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- 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
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- 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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00434—Neural system
-
- 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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00505—Urinary tract
- A61B2018/00511—Kidney
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- 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
- A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
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- 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
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00702—Power or energy
-
- 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
Abstract
The invention relates to a radio frequency instrument for automatic ablation, which comprises a hardware part and a software part, wherein the hardware part comprises a power output module and an impedance monitoring module, and the power output module adjusts ablation energy according to a control signal output by the software part; the impedance monitoring module is used for detecting ablation impedance in real time; the software part comprises a setting module, a control module and a parameter analysis module; the setting module is used for setting the ablation depth; the control module gives an initial control signal according to the set ablation depth; the parameter analysis module is used for calculating an adjusting value of ablation energy according to the ablation impedance detected by the impedance monitoring module so as to adjust the control signal for the control module. The invention enables each ablation point to reach the ideal ablation depth.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an automatic ablation radio frequency instrument.
Background
Renal artery ablation is the effect of reducing sympathetic nerve activity by emitting radiofrequency energy within the renal artery, partially destroying renal afferent and efferent nerve fibers. Animal testing and clinical studies have shown that renal norepinephrine levels, representing efferent neural excitability, are significantly reduced following renal artery ablation, while muscular sympathetic activity, representing central sympathetic excitability, is also significantly reduced, and these changes are accompanied by a reduction in blood pressure. At present, the renal artery ablation is also a traditional radio frequency instrument, and the ideal ablation depth cannot be precisely achieved, so that the ablation effect is influenced.
Disclosure of Invention
The invention aims to provide an automatic ablation radiofrequency instrument, so that each ablation point can reach an ideal ablation depth.
The technical scheme adopted by the invention for solving the technical problems is as follows: the radio frequency instrument comprises a hardware part and a software part, wherein the hardware part comprises a power output module and an impedance monitoring module, and the power output module adjusts ablation energy according to a control signal output by the software part; the impedance monitoring module is used for detecting ablation impedance in real time; the software part comprises a setting module, a control module and a parameter analysis module; the setting module is used for setting the ablation depth; the control module gives an initial control signal according to the set ablation depth; the parameter analysis module is used for calculating an adjusting value of ablation energy according to the ablation impedance detected by the impedance monitoring module so as to adjust the control signal for the control module.
The parameter analysis module is based on
To modulate ablation energy, wherein: p is the power analyzed by the parameter analysis module, h is the preset ablation depth, R1Is the impedance of the catheter electrode when it is completely in the blood, R2Impedance when the catheter electrode is fully against the tissue, RMeasuringIs the impedance value displayed by the radio frequency instrument when the patient is normally attached.
The hardware portion further includes an accessory identification module for identifying whether the accessory is a temperature controlled catheter.
The hardware part also comprises a temperature monitoring module, and the temperature monitoring module is used for detecting the ablation temperature in real time; the parameter analysis module is further used for adjusting a control signal output by the control module according to the ablation temperature detected by the temperature monitoring module, when the detected ablation temperature reaches a set upper temperature limit, the control module controls the power output module to reduce ablation energy, and when the detected ablation temperature exceeds the set upper temperature limit, the control module controls the power output module to stop working.
The parameter analysis module is further configured to compare the ablation impedance detected by the impedance monitoring module with an initial impedance and an upper impedance limit, respectively, and if the detected ablation impedance exceeds the initial impedance or the upper impedance limit, the control module controls the power output module to stop working.
The parameter analysis module is further used for analyzing the decrease rate of the ablation impedance detected by the impedance monitoring module, and if the detected decrease rate fails to reach an ideal value, the control module controls the power output module to stop working.
The software portion further includes a recording module for saving a procedure curve and procedure parameters of the ablation.
Advantageous effects
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects: according to the invention, the ablation energy (power) is adjusted according to the feedback of the real-time ablation impedance, so that each ablation point can reach the ideal ablation depth, and the ablation effect is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The embodiment of the invention relates to a radiofrequency instrument for automatic ablation, which comprises a hardware part and a software part, wherein the hardware part comprises a power output module and an impedance monitoring module, and the power output module adjusts ablation energy according to a control signal output by the software part; the impedance monitoring module is used for detecting ablation impedance in real time; the software part comprises a setting module, a control module and a parameter analysis module; the setting module is used for setting the ablation depth; the control module gives an initial control signal according to the set ablation depth; the parameter analysis module is used for calculating an adjusting value of ablation energy according to the ablation impedance detected by the impedance monitoring module so as to adjust the control signal for the control module.
Wherein the parameter analysis module is based on
To modulate ablation energy, wherein: p is the power analyzed by the parameter analysis module, h is the preset ablation depth, R1Is the impedance of the catheter electrode when it is completely in the blood, R2Impedance when the catheter electrode is fully against the tissue, RMeasuringIs the impedance value displayed by the radio frequency instrument when the patient is normally attached.
The hardware portion further includes an accessory identification module for identifying whether the accessory is a temperature controlled catheter.
The hardware portion may further include a temperature monitoring module when the accessory identification module identifies that the accessory is a temperature controlled catheter. The temperature monitoring module is used for detecting the ablation temperature in real time; the parameter analysis module is also used for adjusting a control signal output by the control module according to the ablation temperature detected by the temperature monitoring module, when the detected ablation temperature is close to a set upper temperature limit, the control module controls the power output module to reduce ablation energy, and when the detected ablation temperature exceeds the set upper temperature limit, the control module controls the power output module to stop working. Therefore, the invention can monitor the condition of the ablation temperature in real time and ensure the safety during automatic ablation.
The parameter analysis module is further configured to compare the ablation impedance detected by the impedance monitoring module with an initial impedance and an upper impedance limit, respectively, and if the detected ablation impedance exceeds the initial impedance or the upper impedance limit, the control module controls the power output module to stop working. The parameter analysis module is further used for analyzing the decrease rate of the ablation impedance detected by the impedance monitoring module, and if the detected decrease rate fails to reach an ideal value (10% -20%), the control module controls the power output module to stop working. The invention can monitor the ablation impedance in real time and ensure that the ablation depth reaches the standard.
The software portion further includes a recording module for saving a procedure curve and procedure parameters of the ablation. The user can browse the ablation process curve and the ablation process parameters at any time, so that the whole ablation process can be known.
The radiofrequency instrument can set the desired ablation depth at different parts of the renal artery in the operation process, the software part can automatically calculate the current ablation depth in the ablation process of each point, and ablation parameters are adjusted according to the current actual condition, so that each ablation point can reach the ideal ablation depth, and the ablation effect is ensured.
Claims (6)
1. An automatic ablation radiofrequency instrument comprises a hardware part and a software part, and is characterized in that the hardware part comprises a power output module and an impedance monitoring module, and the power output module adjusts ablation energy according to a control signal output by the software part; the impedance monitoring module is used for detecting ablation impedance in real time; the software part comprises a setting module, a control module and a parameter analysis module; the setting module is used for setting the ablation depth; the control module gives an initial control signal according to the set ablation depth; the parameter analysis module is used for calculating an adjusting value of ablation energy according to the ablation impedance detected by the impedance monitoring module so as to adjust a control signal for the control module; the parameter analysis module is based on
To modulate ablation energy, wherein: p is the power analyzed by the parameter analysis module, h is the preset ablation depth, R1Is the impedance of the catheter electrode when it is completely in the blood, R2Impedance when the catheter electrode is fully against the tissue, RMeasuringIs the impedance value displayed by the radio frequency instrument when the patient is normally attached.
2. The automated ablative rf machine of claim 1, wherein the hardware portion further comprises an attachment identification module for identifying whether an attachment is employed with a temperature controlled catheter.
3. The automated ablative radiofrequency meter of claim 1, wherein the hardware portion further comprises a temperature monitoring module for detecting ablation temperature in real time; the parameter analysis module is further used for adjusting a control signal output by the control module according to the ablation temperature detected by the temperature monitoring module, when the detected ablation temperature reaches a set upper temperature limit, the control module controls the power output module to reduce ablation energy, and when the detected ablation temperature exceeds the set upper temperature limit, the control module controls the power output module to stop working.
4. The automated ablation radiofrequency meter according to claim 1, wherein the parameter analysis module is further configured to compare the ablation impedance detected by the impedance monitoring module with an initial impedance and an upper impedance limit, respectively, and if the detected ablation impedance exceeds the initial impedance or the upper impedance limit, the control module controls the power output module to stop working.
5. The automated ablation radiofrequency meter of claim 1, wherein the parameter analysis module is further configured to analyze a rate of decrease of the ablation impedance detected by the impedance monitoring module, and the control module controls the power output module to stop operating if the detected rate of decrease fails to reach a desired value.
6. The automated ablative rf machine of claim 1, wherein the software portion further comprises a recording module for saving a process curve and process parameters of the ablation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810654227.6A CN108888335B (en) | 2018-06-22 | 2018-06-22 | Automatic change radio frequency appearance that melts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810654227.6A CN108888335B (en) | 2018-06-22 | 2018-06-22 | Automatic change radio frequency appearance that melts |
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| Publication Number | Publication Date |
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| CN108888335A CN108888335A (en) | 2018-11-27 |
| CN108888335B true CN108888335B (en) | 2021-04-02 |
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| CN201810654227.6A Active CN108888335B (en) | 2018-06-22 | 2018-06-22 | Automatic change radio frequency appearance that melts |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200942123Y (en) * | 2006-03-30 | 2007-09-05 | 迈德医疗科技（上海）有限公司 | Radiofrequency generating and controlling device for radiofrequency ablation therapy |
| CN205215353U (en) * | 2013-02-07 | 2016-05-11 | 上海魅丽纬叶医疗科技有限公司 | Radio frequency melts system and radio frequency melts equipment thereof |
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2018
- 2018-06-22 CN CN201810654227.6A patent/CN108888335B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200942123Y (en) * | 2006-03-30 | 2007-09-05 | 迈德医疗科技（上海）有限公司 | Radiofrequency generating and controlling device for radiofrequency ablation therapy |
| CN205215353U (en) * | 2013-02-07 | 2016-05-11 | 上海魅丽纬叶医疗科技有限公司 | Radio frequency melts system and radio frequency melts equipment thereof |
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| Publication number | Publication date |
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| CN108888335A (en) | 2018-11-27 |
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