CN114404020B - A prevent skin frostbite device for in cryoablation art - Google Patents
A prevent skin frostbite device for in cryoablation art Download PDFInfo
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- CN114404020B CN114404020B CN202210073831.6A CN202210073831A CN114404020B CN 114404020 B CN114404020 B CN 114404020B CN 202210073831 A CN202210073831 A CN 202210073831A CN 114404020 B CN114404020 B CN 114404020B
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- 208000001034 Frostbite Diseases 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 239000002504 physiological saline solution Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 15
- 238000001931 thermography Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 238000002679 ablation Methods 0.000 description 16
- 206010028980 Neoplasm Diseases 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 230000002265 prevention Effects 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 206010006187 Breast cancer Diseases 0.000 description 4
- 208000026310 Breast neoplasm Diseases 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 208000000453 Skin Neoplasms Diseases 0.000 description 2
- 208000024770 Thyroid neoplasm Diseases 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 201000000849 skin cancer Diseases 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 201000002510 thyroid cancer Diseases 0.000 description 2
- 108010053481 Antifreeze Proteins Proteins 0.000 description 1
- 208000005189 Embolism Diseases 0.000 description 1
- 208000035965 Postoperative Complications Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 239000000427 antigen Substances 0.000 description 1
- 108091007433 antigens Proteins 0.000 description 1
- 102000036639 antigens Human genes 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000028993 immune response Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 210000004881 tumor cell Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
-
- 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
- A61B2018/00041—Heating, e.g. defrosting
-
- 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
- A61B2018/00714—Temperature
-
- 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
- A61B2018/00791—Temperature
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- Health & Medical Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Otolaryngology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The invention relates to a device for preventing skin from being frostbitten in cryoablation. The invention relates to a device for preventing skin from being frostbitten, which comprises a thermal imager, a heater and a host. The temperature control module is arranged in the host machine and used for receiving skin temperature data measured by the thermal imager and outputting the skin temperature data to the display; the temperature control module compares the received skin temperature with a set threshold temperature, and if the received skin temperature is lower than the set threshold temperature, a heating starting instruction is sent to the heater; the inner side of the wall of the heater is provided with a physiological saline bag and a thermocouple; if the temperature of the physiological saline reaches 40-50 ℃, the water outlet pipe is opened, and the flowing physiological saline is continuously sprayed on the skin surface of the cryoablation zone; the heater is used for receiving and processing a heating starting instruction or a heating stopping instruction from the temperature control module, and correspondingly starting a heating mode or closing the heating mode. The device can reduce or avoid the frostbite of the ice ball on the skin surface in real time in a non-contact manner.
Description
Technical Field
The invention relates to a device for preventing skin from being frostbitten in cryoablation, in particular to a protection device for preventing skin from being frostbitten in the process of ablating tumors close to the surface of the skin by adopting a cryotechnology.
Background
Tumor ablation techniques under imaging guidance play an increasingly important role. The cryoablation system is a minimally invasive operation which uses argon as a refrigerant and helium as a heating medium according to a Joule-Thomson principle, and has the main action mechanism that the tip of a probe can cool target tissues to-140 ℃ by releasing high-pressure argon, so that target cells are frozen, cell membranes are broken, and cell contents are released to cause microvascular occlusion, tissue ischemia necrosis and the like; the helium can raise the temperature of target tissue from-140 deg.c to 20-40 deg.c, and through the change of the temperature gradient and repeated freeze thawing, the ablation effect may be raised, and the tumor cell may be killed to treat tumor. And simultaneously, the tumor microvascular embolism is destroyed, and the frozen tumor tissue is used as an organism immune response caused by antigens to treat patients. Cryoablation has gained acceptance from both doctors and patients because of its advantages of small trauma, accurate positioning, high safety, fewer complications, rapid recovery, etc.
The infrared thermal imaging technology is a physical detection means for converting the infrared radiation information into an infrared thermal image which can be observed by naked eyes by utilizing the infrared radiation principle of a human body. In the thirty years of the last century, the medical community accurately measured skin temperature data of a human body without touching the human body by utilizing the infrared radiation principle, and the prolog of the infrared thermal imaging technology in clinical application research is pulled open. In 1982, the U.S. FDA approved breast infrared thermography as a screening method for breast cancer. With the development of computer technology, the imaging quality and speed of infrared thermal imaging are obviously improved, and the application range is gradually expanded to various fields of medicine including breast cancer, thyroid cancer, skin cancer and the like. The infrared thermal imaging technology has the advantages that the functional image inspection method is convenient, quick, visual, non-radiative and non-damaging, and can objectively, comprehensively, truly and dynamically reflect the health condition and disease information expressed by human metabolism.
In the existing cryoablation process, the freezing range is excessively large, and the skin or the needle rod of the cryoprobe frosts, so that the surface of the skin close to the tumor is frosted, and the pain of a patient and the occurrence of postoperative complications are increased. For example, breast cancer, when a tumor approaches the skin surface, frozen ice hockey can freeze the skin surface, destroy the appearance of the breast, and place a great burden on the physiology and psychology of the patient. Existing methods to solve this problem are to cover the skin of the ablation zone with sterile gloves filled with warm water, or with devices containing anti-freeze solutions. However, the existing solutions have certain drawbacks in the practical use process: firstly, the temperature cannot be accurately controlled by the method, and the skin surface temperature cannot be ensured to be 20-30 ℃; meanwhile, the protection effect of the freezing area cannot be quantitatively observed; secondly, the thermal insulation material covered on the ablation area can not completely cover the ablation area covered with the cryoprobe, and the situation of incomplete thermal insulation or local frostbite still exists.
Disclosure of Invention
Aiming at the defects of the existing method for preventing the skin from being frosted in the cryoablation operation process, the invention aims to provide the device for preventing the skin from being frosted, which can monitor the skin surface temperature of an ablation area in real time and in a non-contact manner, and can always keep the skin surface temperature between 20 and 30 ℃ by changing the thermal power to form positive feedback, so that the frostbite caused by the ice hockey in the cryoablation process on the skin surface is reduced or avoided.
The invention relates to a device for preventing skin frostbite in cryoablation, which comprises: the thermal imaging instrument, the heater and the host are connected in sequence; the host is connected with an external display and a power supply; the thermal imager is used for measuring the temperature of a selected measuring point on the skin of the cryoablation zone in real time; the outside of the host is provided with a control panel for setting a threshold temperature; the temperature control module is arranged in the host and used for receiving skin temperature data measured by the thermal imager and outputting the skin temperature data to the display; the temperature control module compares the received skin temperature with a set threshold temperature, judges whether the received skin temperature is lower than the set threshold temperature, if so, sends a heating starting instruction to the heater, and if not, sends a heating closing instruction to the heater; the inner side of the wall of the heater is provided with a replaceable physiological saline bag, and the physiological saline bag is filled with physiological saline and is provided with a water outlet pipe; the heater is used for receiving and processing a heating starting instruction or a heating stopping instruction from the temperature control module, and correspondingly starting a heating mode or closing the heating mode; the thermocouple is attached to the physiological saline bag and is connected with the temperature control module; the thermocouple is used for monitoring the temperature of the physiological saline in the physiological saline bag, judging whether the temperature of the physiological saline reaches 40-50 ℃, if so, sending temperature information to the temperature control module, outputting the received physiological saline temperature detected by the thermocouple to the display by the temperature control module, prompting to open a water outlet pipe switch of the physiological saline bag, opening the water outlet pipe, and continuously spraying the discharged physiological saline on the skin surface of the cryoablation zone, so that the temperature of the skin surface rises to 20-30 ℃.
According to a further feature of the present invention, the heater includes a processor and a resistance wire, the processor being configured to receive a start heating command or a stop heating command from the temperature control module, and to start a resistance wire heating mode or to shut down a resistance wire heating mode, respectively; the resistance wire is used for heating the physiological saline in the physiological saline bag filled in the heater to 40-50 ℃ in a resistance wire heating mode.
The skin frostbite prevention device for cryoablation has the following advantages:
(1) The device has the advantages of simple structure, strong visibility and convenient operation, and overcomes the defect of complex operation of the skin frostbite prevention device in the current market;
(2) The temperature of the skin decreases rapidly during cryoablation of tumors near the skin surface, and there is a risk of frostbite of the skin surface. The skin frostbite prevention device can monitor the thermal field distribution on the surface of skin tissue in real time, and according to the tissue temperature of an ablation area measured by a thermal imager, the water temperature of a physiological saline bag is regulated in real time by comparing the difference between the skin temperature of the ablation area and the set temperature, and the skin tissue temperature of the ablation area is increased by physiological saline, so that the damage to the skin surface and related complications caused by an ice ball in the cryoablation operation are avoided or reduced to the greatest extent;
(3) The skin frostbite prevention device can meet the requirements of various tumor ablations close to the skin, such as breast cancer, thyroid cancer, skin cancer and the like, avoid skin frostbite, and improve the life quality of patients and the beauty of the skin surface.
Drawings
Fig. 1 is a schematic view of a structure of an anti-skin frostbite device for cryoablation according to the present invention.
Fig. 2 is a schematic diagram of a temperature control module of the skin frostbite prevention device for cryoablation according to the present invention.
Fig. 3 is a circuit diagram of a temperature control module of the skin frostbite prevention device for cryoablation according to the present invention.
Reference numerals: 1: a thermal imager; 2: a thermocouple; 3: a heater; 4: a physiological saline bag; 5: a water outlet pipe; 6: a display; 7: a power supply; 8: a host; 9: a temperature control module; 10: and a control panel.
Detailed Description
The technical scheme and advantages of the present invention will be described in detail below by means of specific embodiments in conjunction with the accompanying drawings and specific implementations.
The device for preventing skin frostbite in cryoablation according to the present invention, as shown in fig. 1, comprises: the thermal imager 1, the heater 3 and the host computer 8 are connected in sequence. The host 8 is connected to the external display 6 and the power supply 7. The thermal imager 1 is used to measure in real time the temperature of a selected measurement point on the skin of the cryoablation zone. The outside of the host 8 has a control panel for setting the threshold temperature. The host computer 8 has a temperature control module 9 inside for receiving the skin temperature data measured by the thermal imager 1 and outputting the data to the display 6. The temperature control module 9 compares the received skin temperature with a set threshold temperature, determines whether the received skin temperature is lower than the set threshold temperature, if so, issues a start heating instruction to the heater 3, otherwise, issues a shut-down heating instruction to the heater 3. The inner side of the wall of the heater 3 is provided with a replaceable physiological saline bag 4. The physiological saline bag 4 is filled with physiological saline and is provided with a water outlet pipe 5. The heater 3 is configured to receive and process a start heating command or a stop heating command from the temperature control module 9, and to start the heating mode or to shut down the heating mode, respectively. The thermocouple 2 is attached to the physiological saline bag 4 and connected with the temperature control module 9. The thermocouple 2 is used for monitoring the temperature of the physiological saline in the physiological saline bag 4, judging whether the temperature of the physiological saline reaches 40-50 ℃, and if so, sending temperature information to the temperature control module 9. The temperature control module 9 outputs the received physiological saline temperature detected by the thermocouple 2 to the display 6, prompts the opening of a water outlet pipe switch of the physiological saline bag 4, and the water outlet pipe 5 is opened, so that the discharged physiological saline is continuously sprayed on the skin surface of the cryoablation zone, and the temperature of the skin surface is increased to 20-30 ℃.
Preferably, the heater 3 comprises a processor and a resistance wire. The processor is configured to receive a start heating command or a stop heating command from the temperature control module 9, and to start the resistance wire heating mode or to shut down the resistance wire heating mode, respectively. The resistance wire is used for heating the physiological saline in the physiological saline bag 4 to 40-50 ℃ in a resistance wire heating mode. Only if the temperature of the physiological saline in the bag is ensured to reach 40-50 ℃, the temperature of the skin tissue in the ablation area can be ensured to reach 20-30 ℃.
When the thermal imaging device is particularly used, in the cryoablation process of tumor tissues close to the skin surface, the temperature measured by the thermal imaging device 1 at a certain point is lower than a threshold temperature, the signal is transmitted to the temperature control module 9, after the temperature control module obtains the signal, the difference between the skin temperature of an ablation area and the set temperature is compared, the temperature control module is displayed on the control panel 10, the program calculation is performed through the temperature control module, the signal conduction heater 3 processed by the temperature device is used for rapidly heating the physiological saline in the bag, the thermocouple 2 is used for detecting the physiological saline temperature in the bag, the hot water flow is continuously sprayed on the skin surface from the water outlet pipe 5, the skin tissue surface temperature at the position is increased, and the skin frostbite on the surface of the ablation area is prevented. When the temperature measured at a certain point in the infrared thermal imager is higher than the threshold temperature, the signal is transmitted to the temperature control module 9, and after the temperature control module 9 obtains the signal, the signal conduction heater processed by the control panel 8 is turned off rapidly by comparing the skin temperature of the ablation area with the set temperature difference of the control panel 10, so that the skin surface is prevented from being scalded due to the fact that the temperature is too high. In a word, the device utilizes the thermocouple in infrared thermal imaging appearance and the heater to measure the temperature in real time, feeds back to the control by temperature module, and intelligent control hot water flow's temperature remains the skin surface temperature of ablation district all the time between 20 ℃ ~30 ℃ to avoid the frostbite of ablation district skin surface.
The principle of the temperature control module is shown in fig. 2, the temperature control module receives temperature detection data from the thermal imager 1, converts a temperature signal detected by the thermal imager 1 into a voltage signal, transmits the voltage signal to the comparator in real time after being acquired by the signal acquisition module, transmits an instruction after analysis, and transmits a heating instruction through the singlechip control system if the temperature of the received skin is lower than a set threshold temperature, otherwise, transmits a stop instruction to the singlechip control system.
The circuit diagram of the temperature control module is shown in fig. 3, wherein A, B is two contacts of an electric junction thermometer, KM is an alternating current contactor, the rated voltage of a coil is 36V, and RL is an electric heater. When the power switch S is turned on, the electric heater starts to heat, and when the temperature rises to a preset temperature, the two contacts A, B of the electric contact mercury thermometer are turned on, so that the contactor KM is electrified and attracted, and the normally closed contact cuts off the power supply of the electric heater to stop heating. When the temperature is less than the preset temperature, the two contacts A, B of the electric contact mercury thermometer are disconnected, KM is powered off, the contacts are reset, and the electric heater begins to heat again. The heating is repeated repeatedly, and the purpose of automatic temperature control is achieved.
Claims (2)
1. An anti-skin frostbite device for use in cryoablation procedures, comprising: the thermal imaging instrument, the heater and the host are connected in sequence; the host is connected with an external display and a power supply;
the thermal imager is used for measuring the temperature of a selected measuring point on the skin of the cryoablation zone in real time;
the outside of the host is provided with a control panel for setting a threshold temperature;
the temperature control module is arranged in the host and used for receiving skin temperature data measured by the thermal imager and outputting the skin temperature data to the display;
the temperature control module compares the received skin temperature with a set threshold temperature, judges whether the received skin temperature is lower than the set threshold temperature, if so, sends a heating starting instruction to the heater, and if not, sends a heating closing instruction to the heater;
the inner side of the wall of the heater is provided with a replaceable physiological saline bag, and the physiological saline bag is filled with physiological saline and is provided with a water outlet pipe;
the heater is used for receiving and processing a heating starting instruction or a heating stopping instruction from the temperature control module, and correspondingly starting a heating mode or closing the heating mode;
the thermocouple is attached to the physiological saline bag and connected with the temperature control module; the thermocouple is used for monitoring the temperature of the physiological saline in the physiological saline bag, judging whether the temperature of the physiological saline reaches 40-50 ℃, if so, sending temperature information to the temperature control module, outputting the received physiological saline temperature detected by the thermocouple to the display by the temperature control module, prompting to open a water outlet pipe switch of the physiological saline bag, opening the water outlet pipe, and continuously spraying the discharged physiological saline on the skin surface of the cryoablation zone, so that the temperature of the skin surface rises to 20-30 ℃.
2. The anti-skin frostbite device for use in cryoablation procedures of claim 1, wherein: the heater comprises a processor and a resistance wire, wherein the processor is used for receiving a heating starting instruction or a heating stopping instruction from the temperature control module, and correspondingly starting a resistance wire heating mode or closing the resistance wire heating mode; the resistance wire is used for heating the physiological saline in the physiological saline bag filled in the heater to 40-50 ℃ in a resistance wire heating mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210073831.6A CN114404020B (en) | 2022-01-21 | 2022-01-21 | A prevent skin frostbite device for in cryoablation art |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210073831.6A CN114404020B (en) | 2022-01-21 | 2022-01-21 | A prevent skin frostbite device for in cryoablation art |
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| CN114404020A CN114404020A (en) | 2022-04-29 |
| CN114404020B true CN114404020B (en) | 2024-04-12 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2917668Y (en) * | 2005-12-19 | 2007-07-04 | 陈虎 | Medical fluid thermostatic heating system |
| CN102940531A (en) * | 2012-11-23 | 2013-02-27 | 陈旭东 | Skin heat preservation device used for argon-helium cryosurgery and usage method |
| CN204731663U (en) * | 2015-07-07 | 2015-10-28 | 吕培锋 | A kind of intelligent human-body surface temperature supervisory system |
| CN111419385A (en) * | 2020-04-20 | 2020-07-17 | 四川大学华西医院 | Automatic cooling system for medical neurosurgery operation area |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11554039B2 (en) * | 2017-12-26 | 2023-01-17 | Stryker Corporation | Thermal system with overshoot reduction |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2917668Y (en) * | 2005-12-19 | 2007-07-04 | 陈虎 | Medical fluid thermostatic heating system |
| CN102940531A (en) * | 2012-11-23 | 2013-02-27 | 陈旭东 | Skin heat preservation device used for argon-helium cryosurgery and usage method |
| CN204731663U (en) * | 2015-07-07 | 2015-10-28 | 吕培锋 | A kind of intelligent human-body surface temperature supervisory system |
| CN111419385A (en) * | 2020-04-20 | 2020-07-17 | 四川大学华西医院 | Automatic cooling system for medical neurosurgery operation area |
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