CN208756146U - A kind of cryosurgery system - Google Patents

Abstract

The utility model discloses a kind of cryosurgery systems, belong to technical field of medical equipment.Show that equipment, input equipment and control panel are electrically connected with host respectively in the system；The input terminal of control panel is electrically connected with the first air pressure dynamic regulation mould group, reducer unit, the second air pressure dynamic regulation mould group, booster pump and its valve group and ablation needle；The output end of control panel is electrically connected with the input terminal of relay board；The output end of relay board in the first air pressure dynamic regulation mould group, reducer unit, the second air pressure dynamic regulation mould group and booster pump and its valve group solenoid valve and ablation needle be electrically connected；Argon gas source is connect with the inlet end of the first air pressure dynamic regulation mould group and reducer unit；Helium gas source is connect with the inlet end of the second air pressure dynamic regulation mould group；The outlet side of first air pressure dynamic regulation mould group, reducer unit, the second air pressure dynamic regulation mould group and booster pump and its valve group is connect with ablation needle.The utility model accurately controls cryogenic temperature or improves freezing efficiency, saves gas source.

Description

A kind of cryosurgery system

Technical field

The utility model relates to technical field of medical equipment, in particular to a kind of cryosurgery system.

Background technique

Currently, there are many kinds of the methods for the treatment of cancer, such as operation excision, interventional therapy, drug therapy, local ablation are controlled Treat etc..Wherein, local ablation therapy over the past decade, flourishes with the development of various ablation Medical Devices Treatment method.In local ablation therapy method, cryoablation is because it is big with ablation range, can multitool joint, wide indications And there is many advantages, such as immunology effect, obtain being widely recognized as expert.

The basic principle of cryogenic ablation is to freeze tumour cell, forms its intracellular ice crystal, destroys cell, reaches and break Ruin the purpose of cancerous tumor cell.There are mainly two types of cryosurgery systems currently on the market.It is big one is being absorbed by liquid nitrogen gasification Calorimetric amount forms low temperature.But liquid nitrogen system have it is many inconvenient for use, be mainly manifested in: 1) liquid nitrogen storage transport not side Just, it is easy to leakage phenomenon occur；2) liquid nitrogen system can not realize the control of temperature, be unable to regulation power, be easy to tumour Normal surrounding tissue causes unnecessary damage；3) rate of temperature fall of liquid nitrogen system is slower, is not suitable for what needs were rapidly frozen Treatment.Another kind is to generate low temperature using Joule-Thomson principle by the throttle effect of argon gas, imitated using the throttling of helium The effect that heating should be generated realizes heating.Argon cryogenic system cooling rate is fast and adjustable power, is with U.S. Endocare (1997 obtain FDA) is represented, due to the appearance of technique, liquid nitrogen system is by market.

But argon cryogenic system currently on the market also has many deficiencies, is mainly manifested in: 1) argon cryogenic system The normal work air pressure of argon gas is 3000Psi or so, belongs to high-pressure air source, but the not function of pressure monitoring in system, this Considerably increase the security risk of operation；2) argon cryogenic system can not achieve the temperature of freezing and be precisely controlled, and not have more The function of set temperature, when needing to control cryogenic temperature to save cell activity (such as nerve cell, it is lower than certain temperature, Nerve cell can be damaged, otherwise cell can still survive), power can only be adjusted in real time by doctor, not only according to ablation needle temperature It is troublesome in poeration, and temperature inaccuracy is controlled, cryogenic temperature fluctuation be easy to cause greatly additional injury；3) argon cryogenic system liter Wen Shi, attainable maximum temperature is only 40 DEG C, and protein coagulating at least needs 57 DEG C, and therefore, argon cryogenic system does not have There are promotion protein coagulating, and then the function of stopping blooding, this considerably increases the risks of postoperative hemorrhage；4) the argon helium low temperature in market Surgery systems do not have Pressure behaviour regulatory function, and in refrigerating process, system always works at anticyclonic state, this will lead to The waste of gas；5) argon cryogenic system needs two kinds of gas sources that must be ready for abundance, and two kinds of gas sources are indispensable, helium price High and rare, ease of use is poor；6) since Chinese gas source purity is inadequate, particle, oil gas, moisture etc. are often adulterated in gas The filtering of impurity, system is insufficient, and impurity is caused to enter ablation needle, and the orifice diameter inside ablation needle is a few tenths of a mm, Impurity is easy to cause blocked primary orifice, and then operation is caused to terminate；7) for different ablation needles, determine that it melts the mark of ability Standard depends on its temperature value, and the argon helium cryosurgery system in market and the function of not having set temperature, this leads to doctor not It can be directed to the tumor presence of patient, preset surgical procedure, can only monitor ice hockey coverage condition using CT or color ultrasound in real time, this is not only It wastes time, and also adds quantity of X-rays X suffered by patient；8) traditional refrigeration control method be always with high-pressure air feed, but By the way that the study found that traditional control method will lead to the gas transmission tube portion of ablation needle, handle portion outer surface generates a large amount of " knots Frost " phenomenon illustrate to have a large amount of cooling capacity wastes, and then leads to the waste of gas, and maximum air demand can not achieve it is lower Ablation temperature, be not the optimal control method of freezing.

Utility model content

It can not set and be precisely controlled to solve cryogenic temperature existing for existing cryosurgery system, ease of use The deficiencies of difference, ablation needle throttle orifice easily block, gas waste is more, the utility model provides a kind of safe and efficient low temperature hand Art system, including display equipment, input equipment, host, power supply, control panel, relay board, control gas circuit, ablation needle, argon gas source And helium gas source；The control gas circuit include the first air pressure dynamic regulation mould group, reducer unit, the second air pressure dynamic regulation mould group and Booster pump and its valve group；The display equipment and input equipment are electrically connected with the host respectively；The control panel and the master Mechatronics；The input terminal of the control panel is dynamic with the first air pressure dynamic regulation mould group, reducer unit, the second air pressure respectively State adjusts mould group, booster pump and its valve group and ablation needle electrical connection；The output end of the control panel is defeated with the relay board Enter end electrical connection；The output end of the relay board respectively with the first air pressure dynamic regulation mould group, reducer unit, the second gas Press dynamic regulation mould group and solenoid valve and ablation needle electrical connection in booster pump and its valve group；The power supply respectively with it is described Host, control panel and relay board electrical connection；The argon gas source respectively with the first air pressure dynamic regulation mould group and pressure reducing valve The inlet end connection of group；The helium gas source is connect with the inlet end of the second air pressure dynamic regulation mould group；First air pressure The outlet side of dynamic regulation mould group, reducer unit, the second air pressure dynamic regulation mould group and booster pump and its valve group respectively with it is described The inlet end of ablation needle connects.

The first air pressure dynamic regulation mould group includes particulate filter, oil and gas filter, safety valve, first class pressure pick-up Device, level-one solenoid valve, storage cylinder, secondary pressure transmitter, venting solenoid valve, two-stage electromagnetic valve and first gas distribute branch； The argon gas source is connect with the arrival end of the particulate filter, and the outlet end of the particulate filter connects the oil and gas filtering The outlet end of the arrival end of device, the oil and gas filter is connect with the arrival end of the safety valve, the outlet end of the safety valve Connect respectively with the arrival end of the first class pressure transmitter and level-one solenoid valve, the outlet end of the level-one solenoid valve with it is described The arrival end of storage cylinder connects, and the outlet end of the storage cylinder enters with the secondary pressure transmitter and two-stage electromagnetic valve respectively The outlet end of the connection of mouth end, the two-stage electromagnetic valve is connect with the arrival end of first gas distribution branch, first gas The outlet end of body distribution branch is connect with the air inlet of the ablation needle；The first class pressure transmitter and secondary pressure transmitter Outlet end be electrically connected respectively with the input terminal of the control panel；The outlet end of the safety valve enters with the venting solenoid valve The outlet end of the connection of mouth end, the venting solenoid valve connects exhaust outlet；The output end of the relay board respectively with the level-one Solenoid valve electrical connection in solenoid valve, venting solenoid valve, two-stage electromagnetic valve and first gas distribution branch；The first gas point It is electrically connected with the gas flowmeter in branch with the control panel.

First gas distribution branch routing multichannel gas distribution member parallel with one another is constituted；Each gas distribution member Including gas distribution solenoid valve, moisture filter and gas flowmeter；The arrival end and described two of the gas distribution solenoid valve The outlet end of the outlet end connection of grade solenoid valve, the gas distribution solenoid valve is connect with the arrival end of the moisture filter, The outlet end of the moisture filter is connect with the arrival end of the gas flowmeter, the outlet end of the gas flowmeter and institute The air inlet connection of ablation needle is stated, the gas flowmeter is electrically connected with the input terminal of the control panel；The gas distribution electricity Magnet valve is electrically connected with the output end of the relay board.

The reducer unit includes level-one solenoid valve, check valve, pressure reducing valve, pressure transmitter, two-stage electromagnetic valve and second Gas distributes branch；The argon gas source is connect with the arrival end of the level-one solenoid valve, the outlet end of the level-one solenoid valve with The arrival end of the check valve connects, and the outlet end of the check valve is connect with the arrival end of the pressure reducing valve, the pressure reducing valve Outlet end connect respectively with the arrival end of the pressure transmitter and two-stage electromagnetic valve, the outlet end of the two-stage electromagnetic valve with The arrival end connection of second gas distribution branch, the outlet end of the second gas distribution branch and the ablation needle into Port connection；The outlet end of the pressure transmitter is electrically connected with the input terminal of the control panel；The output of the relay board End is electrically connected with the solenoid valve in the level-one solenoid valve, two-stage electromagnetic valve and second gas distribution branch respectively.

The second air pressure dynamic regulation mould group include particulate filter, oil and gas filter, safety valve, pressure transmitter, Level-one solenoid valve, venting solenoid valve and third gas distribute branch；The arrival end of the helium gas source and the particulate filter connects Connect, the outlet end of the particulate filter connects the arrival end of the oil and gas filter, the outlet end of the oil and gas filter with The arrival end of the safety valve connects, and the outlet end of the safety valve enters with the pressure transmitter and level-one solenoid valve respectively The outlet end of the connection of mouth end, the level-one solenoid valve is connect with the arrival end of third gas distribution branch, the third gas The outlet end of body distribution branch is connect with the air inlet of the ablation needle；The outlet end of the pressure transmitter and the control panel Input terminal electrical connection；The outlet end of the safety valve is connect with the arrival end of the venting solenoid valve, the venting solenoid valve Outlet end connect exhaust outlet；The output end of the relay board respectively with the level-one solenoid valve, venting solenoid valve and third Gas distributes the solenoid valve electrical connection in branch.

The booster pump and its valve group include particulate filter, booster pump, oil and gas filter, safety valve, pressure transmitter, Level-one solenoid valve, venting solenoid valve and the 4th gas distribute branch；The arrival end of the particulate filter connects air-source, described The outlet end of particulate filter is connect with the arrival end of the booster pump, the outlet end of the booster pump and the oil and gas filter Arrival end connection, the outlet end of the oil and gas filter connect with the arrival end of the safety valve, the outlet of the safety valve End connect with the arrival end of the pressure transmitter and level-one solenoid valve respectively, the outlet end of the level-one solenoid valve and described the Four gases distribute the arrival end connection of branch, and the outlet end of the 4th gas distribution branch and the air inlet of the ablation needle connect It connects；The outlet end of the pressure transmitter is electrically connected with the input terminal of the control panel；The outlet end of the safety valve with it is described The arrival end of venting solenoid valve connects, and the outlet end of the venting solenoid valve connects exhaust outlet；The output end of the relay board It is electrically connected respectively with the solenoid valve in the booster pump, level-one solenoid valve, venting solenoid valve and the 4th gas distribution branch.

It is described second, third, the 4th gas distribution branch be made of multichannel gas distribution member parallel with one another；Each Gas distribution member includes gas distribution solenoid valve and check valve；The arrival end and air inlet pipeline of the gas distribution solenoid valve connect It connects, the outlet end of the gas distribution solenoid valve is connect with the arrival end of the check valve, the outlet end of the check valve and institute State the air inlet connection of ablation needle；The gas distribution solenoid valve is electrically connected with the output end of the relay board.

The ablation needle includes ablation needle point, temperature thermocouple, appendix, vacuum heat-insulating layer, heat exchanger, electric heating group Part, temperature sensor and ablation shank；The ablation needle point is connect with ablation shank；The appendix front end is provided with throttling Hole；The inner wall of the ablation shank is provided with the vacuum heat-insulating layer；The appendix is connect with the heat exchanger；The survey Warm galvanic couple is set in the ablation shank；The electric heating assembly is mounted on the heat exchanger, and is connect by heating Mouth is electrically connected with the relay board；Temperature sensor is provided on the electric heating assembly；The temperature thermocouple and temperature Sensor is electrically connected with the input terminal of the control panel respectively.

The electric heating assembly is silica gel heating sheet or film heating piece；The temperature sensor is thermoelectricity occasionally temperature-sensitive electricity Resistance.

The input equipment includes keyboard or mouse；The display equipment includes that liquid crystal display or touch control type LCD are shown Screen；The control panel includes PID controller, parallel communication interface, serial communication interface, CPU, memory, DC-DC conversion module And photoelectrical coupler；The CPU is electric with the parallel communication interface, serial communication interface, memory and photoelectrical coupler respectively Connection；The PID controller is electrically connected with the photoelectrical coupler；The DC-DC conversion module respectively with the PID control Device, parallel communication interface, serial communication interface, CPU, memory and photoelectrical coupler electrical connection.

Cryosurgery system provided by the utility model can not only be realized pair by the first air pressure dynamic regulation mould group The cryogenic temperature of ablation needle is accurately controlled and is preset cryogenic temperature, but also being capable of real-time monitoring gas distribution channel gas Consumption, and dynamic adjusts supply gas pressure, with the supply gas pressure being optimal, not only guarantees refrigeration effect, but also reduce return-air Resistance makes ablation needle maintain lower cryogenic temperature, increases freezing range, and then increase freezing efficiency, reduces gas usage amount； When realizing helium heating by the second air pressure dynamic regulation mould group, ablation needle can be warming up to 100 DEG C or more, to make protein Solidification achievees the effect that needle track stops blooding；It is designed by multiple high voltage protective, is effectively guaranteed the peace of patient and operator Entirely；By Multistage filtering device, sufficiently the contaminant filters such as particle, oil and gas, moisture in gas can be fallen, efficiently solve and disappear The problem of melting needle blocking.

Detailed description of the invention

Fig. 1 is cryosurgery circuit system principle schematic diagram provided by the embodiment of the utility model；

Fig. 2 is the principle schematic diagram of control gas circuit provided by the embodiment of the utility model；

Fig. 3 is the structural schematic diagram of the first air pressure dynamic regulation mould group provided by the embodiment of the utility model；

Fig. 4 is the structural schematic diagram of reducer unit provided by the embodiment of the utility model；

Fig. 5 is the structural schematic diagram of the second air pressure dynamic regulation mould group provided by the embodiment of the utility model；

Fig. 6 is the structural schematic diagram of booster pump provided by the embodiment of the utility model and its valve group；

Fig. 7 is the schematic illustration provided by the embodiment of the utility model being precisely controlled to ablation needle cryogenic temperature；

Fig. 8 is the schematic diagram of internal structure of ablation needle provided by the embodiment of the utility model；

Fig. 9 is the refrigerating process schematic diagram of ablation needle provided by the embodiment of the utility model；

Figure 10 is operating air pressure and ablation needle temperature variation curve schematic diagram in prior art refrigerating process；

Figure 11 is operating air pressure and ablation needle temperature variation curve schematic diagram in the utility model embodiment refrigerating process；

Figure 12 is high pressure multiple protective design scheme provided by the embodiment of the utility model；

Figure 13 is the circuit structure schematic illustration of control panel provided by the embodiment of the utility model.

Specific embodiment

With reference to the accompanying drawings and examples, technical solutions of the utility model are further described.

Referring to Fig. 1 and Fig. 2, the utility model embodiment provides a kind of cryosurgery system, which includes that display is set Standby 1, input equipment 2, host 3, power supply 4, control panel 5, relay board 6, control gas circuit 7, ablation needle 8, argon gas source 9 and helium gas source 10.Wherein, control gas circuit 7 includes the first air pressure dynamic regulation mould group 71, reducer unit 72, the second air pressure dynamic regulation mould group 73 With booster pump and its valve group 74；Display equipment 1 and input equipment 2 are electrically connected with host 3 respectively；Control panel 5 is electrically connected with host 3 It connects；The input terminal of control panel 5 respectively with the first air pressure dynamic regulation mould group 71, reducer unit 72, the second air pressure dynamic regulation mould Group 73, booster pump and its valve group 74 and ablation needle 8 are electrically connected；The output end of control panel 5 and the input terminal of relay board 6 are electrically connected It connects；The output end of relay board 6 respectively with the first air pressure dynamic regulation mould group 71, reducer unit 72, the second air pressure dynamic regulation Mould group 73 and booster pump and its solenoid valve and the electrical connection of ablation needle 8 in valve group 74；Power supply 4 respectively with host 3, control panel 5 and Relay board 6 is electrically connected；Argon gas source 9 is connect with the inlet end of the first air pressure dynamic regulation mould group 71 and reducer unit 72 respectively, Helium gas source 10 is connect with the inlet end of the second air pressure dynamic regulation mould group 73, the first air pressure dynamic regulation mould group 71, reducer unit 72, the outlet side of the second air pressure dynamic regulation mould group 73 and booster pump and its valve group 74 is connect with the inlet end of ablation needle 8 respectively.

Referring to Fig. 1 to Fig. 3, the first air pressure dynamic regulation mould group 71 include particulate filter 7101, oil and gas filter 7102, Safety valve 7103, first class pressure transmitter 7104, level-one solenoid valve 7105, storage cylinder (gas buffer pond) 7106, secondary pressure Transmitter 7107, venting solenoid valve 7108, two-stage electromagnetic valve 7109 and first gas distribute branch.Wherein, argon gas source 9 and particle The arrival end of filter 7101 connects, the arrival end of the outlet end connection oil and gas filter 7102 of particulate filter 7101, oil and gas The outlet end of filter 7102 is connect with the arrival end of safety valve 7103, and the outlet end of safety valve 7103 becomes with first class pressure respectively Device 7104 and the arrival end of level-one solenoid valve 7105 is sent to connect, the outlet end of level-one solenoid valve 7105 and the entrance of storage cylinder 7106 End connection, the outlet end of storage cylinder 7106 connect with the arrival end of secondary pressure transmitter 7107 and two-stage electromagnetic valve 7109 respectively It connects, the outlet end of two-stage electromagnetic valve 7109 is connect with the arrival end of first gas distribution branch, and first gas distributes going out for branch Mouth end is connect with the air inlet of ablation needle 8；The outlet end of first class pressure transmitter 7104 and secondary pressure transmitter 7107 difference It is electrically connected with the input terminal of control panel 5；The outlet end of safety valve 7103 is connect with the arrival end of venting solenoid valve 7108, electricity of deflating The outlet end of magnet valve 7108 connects exhaust outlet；The output end of relay board 6 respectively with level-one solenoid valve 7105, venting solenoid valve 7108, the solenoid valve electrical connection in two-stage electromagnetic valve 7109 and first gas distribution branch；First gas distributes the gas in branch Flowmeter body is electrically connected with control panel 5.In practical applications, first gas distribution branch routing multichannel gas distribution parallel with one another Unit is constituted；Each gas distribution member includes gas distribution solenoid valve, moisture filter and gas flowmeter；Gas distribution electricity The arrival end of magnet valve connect with the outlet end of two-stage electromagnetic valve 7109, and gas distributes outlet end and the moisture filter of solenoid valve The arrival end of arrival end connection, the outlet end of moisture filter and gas flowmeter connects, the outlet end of gas flowmeter with disappear Melt the air inlet connection of needle 8, gas flowmeter is electrically connected with the input terminal of control panel 5；Gas distributes solenoid valve and relay board 6 Output end electrical connection.In the present embodiment, three-level solenoid valve 7110, moisture filter 7113 and gas flowmeter 7116 constitute the One gas distributes the gas distribution member all the way in branch, three-level solenoid valve 7111, moisture filter 7114 and gas flowmeter 7117 constitute the another way gas distribution member in first gas distribution branch, three-level solenoid valve 7112, moisture filter 7115 The another way gas distribution member in first gas distribution branch is constituted with gas flowmeter 7118.It should be understood that in order to Meet clinician to the freezing needs of various volumetric tumors, first gas distributes branch should be more using 8 tunnels, 10 tunnels or 12 tunnels etc. Road gas distribution channel；Alternately control is carried out by solenoid valve of the control panel 5 to multichannel gas distribution channel, realizes the adjusting of freezing power, And then accurately control the temperature of ablation needle 8.

Referring to Fig. 1 to Fig. 3, the first air pressure dynamic regulation mould group 71 of the present embodiment is equipped with Multistage filtering device, including Grain filter 7101, oil and gas filter 7102 and moisture filter 7113,7114,7115 etc., in this way can sufficiently will be in gas The contaminant filters such as particle, oil and gas, moisture fall, and efficiently solve the problems, such as that ablation needle blocks.First air pressure of the present embodiment is dynamic State adjusts mould group 71 and is equipped with multistage air pressure protection, and 7104 real-time monitoring of first class pressure transmitter enters the air pressure of control gas circuit, peace The meeting of full valve 7103 releasing pressure automatically when air pressure is excessively high；If pressure release is slow, control gas circuit can also be by opening venting solenoid valve 7108 Carry out pressure release.The first air pressure dynamic regulation mould group 71 of the present embodiment can realize the dynamic regulation of pressure, utilize level-one solenoid valve 7105 control argon gas enter the gas flow of storage cylinder 7106, and the effect of storage cylinder 7106 is to stablize air pressure, prevent air pressure from generating Excessive fluctuation causes ablation needle temperature fluctuation.Secondary pressure transmitter 7107 is used to monitor the air pressure of storage cylinder 7106, gas storage The atmospheric pressure value of bottle 7106 is acquired by control panel 5, the duty ratio that control panel 5 is cut-off according to air pressure duty control solenoid valve 7105, And then realize pressure control.Solenoid valve of the first air pressure dynamic regulation mould group 71 of the present embodiment equipped with multiple and different grades: one Grade solenoid valve 7105 controls air inflow and then control pressure；After reaching proper air pressure, two-stage electromagnetic valve 7109 works, and controls gas Output；Every road gas distribution channel of first gas distribution branch road is equipped with three-level solenoid valve, such as three-level solenoid valve 7110, 7111,7112, control gas flow difference gas distribution channel；The gas output end of every road gas distribution channel is respectively connected with gas flow Meter, such as gas flowmeter 7116,7117,7118, can the real-time monitoring gas distribution channel gas consumption, control panel 5 acquires The output numerical value of gas flowmeter, calculating time workable for remaining tolerance and monitoring ablation needle in gas cylinder (argon bottle) has Without clogging.

Referring to Fig. 1, Fig. 2 and Fig. 4, reducer unit 72 include level-one solenoid valve 7201, check valve 7202, pressure reducing valve 7203, Pressure transmitter 7204, two-stage electromagnetic valve 7205 and second gas distribute branch.Wherein, argon gas source 9 and level-one solenoid valve 7201 Arrival end connection, the outlet end of level-one solenoid valve 7201 connect with the arrival end of check valve 7202, the outlet of check valve 7202 End connect with the arrival end of pressure reducing valve 7203, the outlet end of pressure reducing valve 7203 respectively with pressure transmitter 7204 and two-stage electromagnetic valve The outlet end of 7205 arrival end connection, two-stage electromagnetic valve 7205 is connect with the arrival end of second gas distribution branch, the second gas The outlet end of body distribution branch is connect with the air inlet of ablation needle 8；The outlet end of pressure transmitter 7204 and the input of control panel 5 End electrical connection；The output end of relay board 6 distributes branch with level-one solenoid valve 7201, two-stage electromagnetic valve 7205 and second gas respectively Solenoid valve electrical connection in road.In practical applications, second gas distribution branch routing multichannel gas distribution member parallel with one another It constitutes；Each gas distribution member includes gas distribution solenoid valve and check valve；The arrival end and second level of gas distribution solenoid valve The outlet end of solenoid valve 7205 connects, and gas distributes the outlet end of solenoid valve and the arrival end of check valve connects, and check valve goes out Mouth end is connect with the air inlet of ablation needle 8；Gas distribution solenoid valve is electrically connected with the output end of relay board 6.In the present embodiment, Three-level solenoid valve 7206 and check valve 7214 constitute the gas distribution member all the way in second gas distribution branch, three-level solenoid valve 7207 and check valve 7215 constitute the another way gas distribution member in second gas distribution branch, three-level solenoid valve 7208 and single The another way gas distribution member in second gas distribution branch is constituted to valve 7216.

Referring to Fig. 1, Fig. 2 and Fig. 4, the reducer unit of the present embodiment is to control argon gas 9 by level-one solenoid valve 7201 to lead to Enter pressure reducing valve 7203, is reduced to argon pressure compared with low pressure；It is equipped between level-one solenoid valve 7201 and pressure reducing valve 7203 single To valve 7202, for preventing gas backstreaming；Pressure transmitter 7204 is used to detect the output pressure of pressure reducing valve 7203；After decompression Gas controls gas output by two-stage electromagnetic valve 7205, then by three-level solenoid valve (such as three-level solenoid valve 7206,7207, 7208 etc.) it exports respectively to different gas distribution channels, as elevated temperature gas；It is (such as single that each road gas distribution channel is equipped with check valve To valve 7214,7215,7216 etc.), prevent gas backstreaming.Meanwhile control panel 5 is controlled inside ablation needle 8 by relay board 6 Electric heating assembly 811 is opened, and low-pressure argon is heated, and low-pressure argon enters ablation tip position, generates throttling refrigeration effect Fruit is excessively poor, and the low-pressure argon of high temperature heats ablation needle, and ablation needle conducts heat to surrounding tissue, increases its temperature, realizes Heating.Electric heating assembly 811 is set on the heat exchanger 810 in ablation needle 8, guarantees that low-pressure argon can be sufficiently heated, It is closer with the distance between two tips for the ablation shank 812 that need to be heated, and almost without line temperature loss.It is set on electric heating assembly 811 It is equipped with temperature sensor 813, for acquiring the heating temperature of electric heating assembly 811；5 temperature collection sensor 813 of control panel Temperature value, after heating temperature reaches preset value, control panel 5 stops heating electric heating assembly 811 by relay board 6. Electric heating assembly 811 can be silica gel heating sheet or film heating piece.Temperature sensor 813 can be thermoelectricity occasionally thermistor.

Referring to Fig. 1, Fig. 2 and Fig. 5, the second air pressure dynamic regulation mould group 73 includes particulate filter 7301, oil and gas filter 7302, safety valve 7303, pressure transmitter 7304, level-one solenoid valve 7305, venting solenoid valve 7310 and third gas distribution branch Road.Wherein, helium gas source 10 is connect with the arrival end of particulate filter 7301, and the outlet end of particulate filter 7301 connects oil and gas mistake The outlet end of the arrival end of filter 7302, oil and gas filter 7302 is connect with the arrival end of safety valve 7303, safety valve 7303 Outlet end is connect with the arrival end of pressure transmitter 7304 and level-one solenoid valve 7305 respectively, the outlet end of level-one solenoid valve 7305 It is connect with the arrival end of third gas distribution branch, the outlet end of third gas distribution branch is connect with the air inlet of ablation needle 8； The outlet end of pressure transmitter 7304 is electrically connected with the input terminal of control panel 5；The outlet end of safety valve 7303 and venting solenoid valve 7310 arrival end connection, the outlet end of venting solenoid valve 7310 connect exhaust outlet；The output end of relay board 6 respectively with level-one Solenoid valve electrical connection in solenoid valve 7305, venting solenoid valve 7310 and third gas distribution branch.In practical applications, third Gas distributes branch routing multichannel gas distribution member parallel with one another and constitutes；Each gas distribution member includes gas distribution electromagnetism Valve and check valve；The arrival end of gas distribution solenoid valve is connect with the outlet end of level-one solenoid valve 7305, and gas distributes solenoid valve Outlet end and check valve arrival end connect, the outlet end of check valve is connect with the air inlet of ablation needle 8；Gas distributes electromagnetism Valve is electrically connected with the output end of relay board 6.In the present embodiment, two-stage electromagnetic valve 7306 and check valve 7308 constitute third gas The gas distribution member all the way in branch is distributed, two-stage electromagnetic valve 7307 and check valve 7309 are constituted in third gas distribution branch Another way gas distribution member.

It, can when the present embodiment realizes helium heating by the second air pressure dynamic regulation mould group 73 referring to Fig. 1, Fig. 2 and Fig. 5 Ablation needle 8 is warming up to 100 DEG C or more, protein coagulating can be made, achievees the effect that needle track stops blooding, while can also adopting said method Carry out heating ablation.Implementation is that electric heating assembly 811, electric heating assembly 811 are arranged on ablation needle inner heat exchanger 810 It can be silica gel heating sheet or film heating piece etc.；If the temperature of electric heating assembly is higher, ablation needle 8 can reach higher Heating temperature.Since helium can also generate the effect of throttling heating at 8 needle point position of ablation needle, temperature can be increased further.Electricity Temperature sensor 813 is provided in heating component 811, for acquiring the heating temperature of electric heating assembly 811；Control panel 5 acquires The temperature value of temperature sensor 813, after heating temperature reaches preset value, control panel 5 stops adding electricity by relay board 6 Hot component 811 heats.Temperature sensor 813 can be thermoelectricity occasionally thermistor.

Referring to Fig. 1, Fig. 2 and Fig. 6, booster pump and its valve group 74 include particulate filter 7401, booster pump 7402, oil and gas mistake Filter 7403, safety valve 7404, pressure transmitter 7405, level-one solenoid valve 7406, venting solenoid valve 7411 and the 4th gas point With branch.Wherein, the arrival end of particulate filter 7401 connects air-source, the outlet end of particulate filter 7401 and booster pump 7402 arrival end connection, the outlet end of booster pump 7402 are connect with the arrival end of oil and gas filter 7403, oil and gas filter 7403 outlet end is connect with the arrival end of safety valve 7404, the outlet end of safety valve 7404 respectively with pressure transmitter 7405 and The arrival end of level-one solenoid valve 7406 connects, and the arrival end of the outlet end of level-one solenoid valve 7406 and the 4th gas distribution branch connects It connects, the outlet end of the 4th gas distribution branch is connect with the air inlet of ablation needle 8；The outlet end of pressure transmitter 7405 and control The input terminal of plate 5 is electrically connected；The outlet end of safety valve 7404 is connect with the arrival end of venting solenoid valve 7411, venting solenoid valve 7411 outlet end connects exhaust outlet；The output end of relay board 6 respectively with booster pump 7403, level-one solenoid valve 7406, deflate Solenoid valve electrical connection in solenoid valve 7411 and the 4th gas distribution branch.In practical applications, the 4th gas distribution branch routing Multichannel gas distribution member parallel with one another is constituted；Each gas distribution member includes gas distribution solenoid valve and check valve；Gas Body distribution solenoid valve arrival end connect with the outlet end of level-one solenoid valve 7406, gas distribute solenoid valve outlet end with unidirectionally The arrival end of valve connects, and the outlet end of check valve is connect with the air inlet of ablation needle 8；Gas distributes solenoid valve and relay board 6 Output end electrical connection.In the present embodiment, two-stage electromagnetic valve 7407 and check valve 7409 are constituted in the 4th gas distribution branch Gas distribution member all the way, two-stage electromagnetic valve 7408 and check valve 7410 constitute the another way gas in the 4th gas distribution branch Allocation unit.

Referring to Fig. 1, Fig. 2 and Fig. 6, the booster pump 7402 of the present embodiment can be air driven pump or electrodynamic pump.When being pressurized pump work, Negative pressure is formed between booster pump 7402 and particulate filter 7401, air is sucked into pump head by particulate filter 7401；Increase Press pump 7402 exports connection safety valve 7404, and safety valve 7404 is connect with venting solenoid valve 7411, releasing pressure automatically after hypertonia It deflates；Pressure transmitter 7405 is used to monitor the output pressure of booster pump 7402.Meanwhile control panel controls relay board, in turn Working time and power by the heating Interface Controller electric heating assembly of ablation needle.Temperature is provided on electric heating assembly 811 Sensor 813, for acquiring the heating temperature of electric heating assembly 811；The temperature value of 5 temperature collection sensor 813 of control panel, After heating temperature reaches preset value, control panel 5 stops heating electric heating assembly 811 by relay board 6.Temperature sensor 813 can be thermoelectricity occasionally thermistor.

Referring to Fig. 1 to Fig. 6, Fig. 8, ablation needle 8 includes ablation needle point 801, temperature thermocouple 802, appendix 803, vacuum Thermal insulation layer 804, heat exchanger 810, electric heating assembly 811, temperature sensor 813 and ablation shank 814.Wherein, needle point is melted 801 connect with ablation shank 814；803 front end of appendix is provided with throttle orifice；Ablation shank 814 inner wall be provided with vacuum every Thermosphere 804；Appendix 803 is connect with heat exchanger 810；Temperature thermocouple 802 is set in ablation shank 814；Electric heating group Part 811 is mounted on heat exchanger 810, and is electrically connected by heating interface with relay board 6, thus real by relay board 6 Existing computer heating control；Temperature sensor 813 is provided on electric heating assembly 811；Temperature thermocouple 802 and temperature sensor 813 divide It is not electrically connected with the input terminal of control panel 5.Control panel 5 acquires the temperature of electric heating assembly 811 by temperature sensor 813, with Realize being precisely controlled and temperature heating being prevented excessively high for electrical heating temperature；Control panel 5 passes through the acquisition ablation of temperature thermocouple 802 The temperature of needle 8.In practical applications, electric heating assembly 811 can be silica gel heating sheet or film heating piece；Temperature sensor 813 It can be thermoelectricity occasionally thermistor.

Referring to Fig. 8, in ablation needle freezing, high pressure argon gas is after carrying out heat exchange inside over-heat-exchanger 810, by defeated Tracheae 803 enters ablation needle point 801, and high pressure gas generates throttle effect in the front end of appendix 803, and temperature reduces, low temperature gas Body carries out precooling treatment to new air inlet body by way of heat exchange using the outside fin of heat exchanger 810, final to discharge Into air.Temperature thermocouple 802 is for detecting ablation needle tip temperature, and vacuum heat-insulating layer 804 is for preventing ablation shank knot Ice, frostbite access normal tissue.Since the gas after throttling, by certain resistance, need to cause to melt through over-heat-exchanger 810 Gas pressure in needle point 801 is greater than standard atmospheric pressure (being greater than 0.1Mpa).Due to the physical property (such as the following table 1) of argon gas, argon Increase of the boiling point of gas with pressure, temperature raising.And the accessible minimum temperature of ablation needle is the boiling temperature of argon gas, so Reducing return-air resistance can make ablation needle reach lower cryogenic temperature.It reduces gas supply gas pressure and then reduces gas flow rate, Return-air resistance can be effectively reduced, and then reduces the pressure in ablation needle point 801.But gas supply air pressure reduction needs in right amount, such as Air pressure is reduced excessively, will lead to restriction effect decrease, refrigerating efficiency decline, temperature can rise instead.The present embodiment is with ablation needle Temperature adjusts supply gas pressure as feedback signal, dynamic, with the supply gas pressure being optimal, not only guarantees restriction effect, but also reduce Return-air resistance makes ablation needle maintain lower cryogenic temperature, increases freezing range, and then increase freezing efficiency.

Table 1

Ar pressure (Mpa)	Argon gas boiling point (DEG C)
		0.1	-185.981
0.4	-170.42
		0.8	-160.27
1	-156.56
		2	-143.43
4	-127.47

Referring to Fig. 1 and Figure 13, control panel 5 includes PID controller 1301, parallel communication interface 1302, serial communication interface 1303, CPU1304, memory 1305, DC-DC conversion module 1306 and photoelectrical coupler 1307.Wherein, CPU1304 respectively with Parallel communication interface 1302, serial communication interface 1303, memory 1305 and photoelectrical coupler 1307 are electrically connected；PID controller 1301 are electrically connected with photoelectrical coupler 1307；DC-DC conversion module 1306 respectively with PID controller 1301, parallel communication interface 1302, serial communication interface 1303, CPU1304, memory 1305 and photoelectrical coupler 1307 are electrically connected.In practical applications, Control panel 5 can be electrically connected by parallel communication interface 1302 or/and serial communication interface 1303 with the realization of host 3；DC-DC conversion Module 1306 is used as power supply, for DC-24V to be converted to DC-5V；Memory 1305 is for storing data；Photoelectric coupling Device 1307 is for realizing the electric isolution between PID controller 1301 and CPU1304；CPU1304 is for realizing the operation to data Processing.

Referring to Fig. 3 to Fig. 6, control panel 5 not only controls the work of relay board 6, but also acquires the temperature letter of ablation needle 8 Number, the temperature signal of electric heating assembly 811, the pressure signal of the first air pressure dynamic regulation mould group 71 and flow signal and subtract The pressure signal of pressure valve group 72, the second air pressure dynamic regulation mould group 73 and booster pump and its valve group 74；The control of relay board 6 first Electromagnetism in air pressure dynamic regulation mould group 71, reducer unit 72, the second air pressure dynamic regulation mould group 73, booster pump and its valve group 74 Valve work and the computer heating control for realizing electric heating assembly 811.

The present embodiment system can set cryogenic temperature and time, warming temperature and time, and can carry out to temperature It is precisely controlled.Time control relies on the timer of internal system.Temperature control is as shown in Figure 7: system is integrated in control panel PID controller 94, its role is to be stablized temperature in set temperature with the shortest time.After gas input, pass through level-one electricity Magnet valve 91 controls gas intake, and face has large capacity storage cylinder behind, plays steady gas pressure, temperature sensor 93 real-time detection ablation needle temperature, the analog-digital converter 96 in PID controller carry out temperature data acquisition, pass through PID controller In pulse width modulator 95 carry out width sets, and then by relay adjust 91 on-off duty ratio of level-one solenoid valve, adjusting gas It presses (monitoring of pressure transmitter 92), and then ablation needle temperature is made to reach setting with optimal time, the smallest overshoot of temperature Temperature, and set temperature is maintained at until operation terminates.

Since ablation needle is worked by Joule-Thomson principle, being precisely controlled for ablation needle temperature is realized, The supply gas pressure for being precisely controlled ablation needle is needed first.The method of control pressure can be automatically controlled pressure regulator, but since pressure is used Property larger, low-response, air pressure fluctuation can be made larger using the adjusting of automatically controlled pressure regulator, and then cause temperature fluctuation larger.This is practical New embodiment is the on-off duty ratio of gas supply electromagnetic valve to be adjusted using PID controller, and large capacity gas storage is arranged in face behind Bottle is with steady gas pressure.PID controller is made of proportional unit P, integral unit I and differentiation element D, and proportional unit P accelerates The response speed of system, improves the degree of regulation of system, integral unit I regulating system steady-state error, and differentiation element D is to improve system The dynamic characteristic of system, three parameters complement each other, and are finally reached optimal control effect, i.e. accurate, the quick control of temperature.

PID controller parameter was largely tested by early period, the optimized parameter set.Such as it is set before surgical Temperature be T, freezing start after, in control panel integrate PID controller according to set the control period (control excessive cycle It is larger to will lead to air pressure fluctuation, and then temperature fluctuation is larger；The control period too short solenoid valve response speed that will lead to is not caught up with), Such as the control period is 5 seconds, the temperature of a system ablation needle of acquisition per second, the average value of temperature in a control period is anti- PID controller, variation of the PID controller according to temperature, the on-off duty ratio of electromagnetic valve for adjusting, and then adjustment feed for air pressure Power, it is final to realize that temperature reaches target temperature T.

When being performed the operation using the present embodiment cryosurgery system, doctor can set according to the size and location of tumour The temperature of ablation needle and working time.System can be freezed automatically according to the temperature and time set, the operation such as heating.Example As doctor passes through input equipment setting freezing 15 minutes, -120 DEG C of temperature；Heating 2 minutes, 10 DEG C of temperature；After confirmation, system Display equipment can show the working curve of the setting, and system starts automatic work, and the real-time working curve in work also can be aobvious Show and shown in equipment have striking contrast with the curve of setting, allows doctor can intuitive observing system working condition.

The present embodiment cryosurgery system has accurate temperature control function: after freezing starts, argon gas is by system air inlet Mouth enters particulate filter, the granule foreign in gas is filtered out, to prevent from damaging subsequent solenoid valve；Argon gas is by particle Filter enters oil and gas filter, further filters the oil and gas impurity in gas, gas enters the peace for high voltage protective later Full valve, control panel passes through the admission pressure of first class pressure transmitter acquisition system, if pressure is in safe range, by level-one electricity Magnet valve is opened, and gas enters storage cylinder；Control panel meets operating air pressure by the pressure that secondary pressure transmitter acquires storage cylinder Afterwards, it is then turned on two-stage electromagnetic valve；According to the channel that ablation needle is inserted into, different three-level solenoid valves is opened, argon gas is through Mist filtration Device filters out moisture and then gas coming through flowmeter in gas, is output to ablation needle, and high pressure argon gas is generated in ablation needle tip Throttle effect generates low temperature, and then realizes freezing.Control panel acquires the temperature of ablation needle in real time, when temperature reach setting- After 120 DEG C, control panel controls the working frequency of level-one solenoid valve, and then controls the air inflow for entering storage cylinder, reduces air pressure.Storage Gas cylinder has certain gas volume, can play the role of gas buffer, smooth air pressure.With the increase of cooling time, system The air delivering pipeline temperature of pipeline and ablation needle can decline, meanwhile, the load of ablation needle institute band can also lighten, and maintain -120 DEG C The operating pressure that low temperature needs can be lower, and system can further decrease the working frequency of level-one solenoid valve according to the time of freezing, Reduce gas consumption.

In temperature-rise period, the present embodiment cryosurgery system provides three kinds of different heating modes:

1) it heats up using helium.Helium filters out the impurity in gas by particulate filter and oil and gas filter；Control Making sheet acquires the supply gas pressure of helium by pressure transmitter, and after system determines that pressure is normal, control panel controls relay board, into And by the electric heating assembly work inside heating Interface Controller ablation needle, it is heated for the heat exchanger of ablation needle, meanwhile, Control panel controls the two-stage electromagnetic valve of level-one solenoid valve opening and corresponding channel by relay board.After helium passes through check valve, Enter ablation needle as elevated temperature gas.Gas enters heat exchanger after passing through gas delivery part, and electric heating assembly adds gas Heat, the position of tool tip that the gas after heating enters ablation needle generate throttle effect, and temperature further increases, and may ultimately reach 100 DEG C or so temperature, at this temperature, protein coagulating achievees the effect that hemostasis.

2) (reducer unit gas circuit) is heated up using argon gas.In surgical procedure, lack helium gas source or due to external Reason cause helium gas source damage, gas leakage and cannot in use, system may be selected argon gas heating, control panel pass through relay board control System opens level-one solenoid valve, and argon gas enters check valve, prevents gas backstreaming, and argon gas reduces gas pressure, pressure by pressure reducing valve The output pressure of transmitters sense pressure reducing valve, control panel detect the output valve of pressure reducing valve to pass through relay board after proper air pressure It controls two-stage electromagnetic valve and opens to enter with three-level solenoid valve opening, the elevated temperature gas for making low-pressure argon be passed through the channel of ablation needle connection Mouthful, while relay board opens the electric heating assembly in ablation needle by the heating interface of connection ablation needle, low-pressure argon passes through After heating, into the point of a knife part of ablation needle, since gas pressure is low, so apparent throttling refrigeration effect will not be generated, it is high The low-pressure argon and ablation needle tip ablation areas of temperature carry out heat exchange, increase its ambient temperature, realize heating.

3) (booster pump and its valve group gas circuit) is heated up using air.It draws sword the stage as operation proceeds to heating, system Argon gas and helium are finished, or the gas source as caused by other reasons cannot in use, then will lead to ablation needle can not be from patient Body is extracted, and can only be waited long the heat by human body itself, slowly be heated up, this will increase operating time and risk.This Embodiment system is devised to be heated up using air, and after doctor selects the heating mode, relay board control booster pump starts The gas input port of work, booster pump forms negative pressure, sucks air；The air of sucking through particulate filter and oil and gas filter, Impurity screening, delivers air to safety valve, and control panel detects air pressure by pressure transmitter and reaches and can open after operating air pressure Two-stage electromagnetic valve and three-level solenoid valve are equipped with the check valve for preventing gas backstreaming in three-level solenoid valve rear end, pass through elevated temperature gas Entrance enters ablation needle, meanwhile, relay board is added air by heating Interface Controller electric heating assembly work, electric heating assembly After heat, into the point of a knife part of ablation needle, heat exchange is carried out around the air and ablation needle of high temperature, increases its ambient temperature, Realize heating.

Traditional refrigeration control method is that entire refrigerating process is controlled gas and freezed with constant pressure；Freezing is just Phase, system pipeline and ablation needle air delivering pipeline temperature are higher, and tumor temperature is human temperature, this causes freezing initial stage to be melted The load of needle is larger, therefore freezing initial stage should be worked in a manner of powerful；But with the increase of cooling time, system pipeline with And the air delivering pipeline temperature of ablation needle can decline, meanwhile, the load of ablation needle institute band can also lighten, then be not required to powerful mode Work.The utility model embodiment freezing whole process in, be not supplied with constant air pressure always, but according to load feelings Condition, it is appropriate to reduce gas supply air pressure, it is finally reached the purpose of solar term, is a kind of efficient, energy-efficient refrigeration control method.

Fig. 9 shows the process that cryoablation operation is carried out using the utility model embodiment cryosurgery system.Freezing After beginning, system is freezed first with constant high pressure gas (argon gas), is judged by the temperature sensor of ablation needle front end Whether the temperature of ablation needle has reached minimum temperature (such as temperature no longer declines in 30 seconds), if do not reached, continue with The work of constant high-pressure gas source controls level-one solenoid valve by the first air pressure dynamic regulation mould group if reaching minimum temperature Opening time, and then the gas flow that argon gas is passed through storage cylinder is controlled, reduce air pressure.System each dynamic regulation time is set as 30 Second, reduced air pressure is 100Psi, after reducing air pressure every time, the temperature change inside system acquisition ablation needle, if ablation needle Temperature reduces, then continues to reduce 100Psi air pressure, continues to acquire the temperature change inside ablation needle.If ablation needle temperature liter Height then needs to increase 200Psi air pressure, and the purpose for increasing relatively large air pressure is to reduce rapidly temperature, because temperature increases, It indicates that load has been above the current power of ablation needle, temperature should be reduced rapidly with high-power, then reduce 100Psi gas again Pressure, at this time as temperature is kept constant, then pressure is optimal supply gas pressure, if ice hockey is increasing as cooling time increases, is born Load further increases, and causes temperature to be unable to maintain that constant, then according to the method described above, increases 200Psi air pressure again, continue one 100Psi air pressure is reduced after the dynamic regulation period again, until temperature is kept constant.Dynamic regulation part in the control method, It in one freeze cycle, can repeatedly be repeated, until ablation needle is made to maintain the low temperature stable state of minimum temperature, just terminate to adjust Control, until cryoablation operation terminates.Using the refrigeration control method, it can not only greatly reduce gas usage amount, but also Ablation needle temperature can be made lower, increase freezing range.Figure 10 and Figure 11 is respectively that traditional freezing mode and the utility model are real Apply the contrast schematic diagram of a freezing mode.

Due to 40 liters of steel gas cylinders that the existing high pressure argon gas gas source of China is the left and right 35Mpa (about 5000psi), air pressure compared with Height is usually connected to gas pressure regulator at cylinder interface when in use, and 3000psi feed system is down in air pressure.Therefore, it is necessary to It is subject to high voltage protective in system, guarantees the safety of patient and operator.The utility model embodiment system is for strong design Multiple protective, as shown in figure 12.(it is often as being connected to the gas pressure regulator on gas cylinder when hypertonia occurs in system Damage, cannot depressurize causes the high pressure gas in steel cylinder to directly feed system), system interface prompt system hypertonia, and Start first class of protection, the opening time of level-one solenoid valve is controlled by the first air pressure dynamic regulation mould group, and then it is logical to control argon gas Enter the gas flow of storage cylinder, reduce air pressure, guarantees that operation smoothly completes, row maintenance again after the completion of operation.If being by adjusting Pressure of uniting is still excessively high, and the second class protection of system is opened, and level-one solenoid valve is closed, and gas is prevented to flow into；Open simultaneously deflation electricity Magnet valve reduces air pressure in a manner of deflation, stops operation.If system entirety control section is all failed, system is also provided with Not against the three-level protective of system control, mechanical ratio unloading valve (safety valve), when pressure height to certain numerical value, without electricity Control, releasing pressure automatically stop operation.

Cryosurgery system provided by the embodiment of the utility model can not only by the first air pressure dynamic regulation mould group Realize and accurately controlled and preset cryogenic temperature to the cryogenic temperature of ablation needle, but also can real-time monitoring gas transmission lead to The consumption of road gas, and dynamic adjusts supply gas pressure and not only guarantees refrigeration effect with the supply gas pressure being optimal, but also subtracts Small return-air resistance makes ablation needle maintain lower cryogenic temperature, increases freezing range, and then increase freezing efficiency, reduces gas Usage amount；When realizing helium heating by the second air pressure dynamic regulation mould group, ablation needle can be warming up to 100 DEG C or more, thus Make protein coagulating, achievees the effect that needle track stops blooding；It is designed by multiple high voltage protective, is effectively guaranteed patient and operation The safety of person；By Multistage filtering device, sufficiently the contaminant filters such as particle, oil and gas, moisture in gas can be fallen, effectively solved The problem of ablation needle of having determined blocks.

Particular embodiments described above has carried out into one the purpose of this utility model, technical scheme and beneficial effects Step is described in detail, it should be understood that being not limited to this foregoing is merely specific embodiment of the utility model Utility model, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all wrap Containing being within the protection scope of the utility model.

Claims (10)

1. a kind of cryosurgery system, which is characterized in that including showing equipment, input equipment, host, power supply, control panel, relay Device plate, control gas circuit, ablation needle, argon gas source and helium gas source；The control gas circuit includes the first air pressure dynamic regulation mould group, decompression Valve group, the second air pressure dynamic regulation mould group and booster pump and its valve group；The display equipment and input equipment respectively with the master Mechatronics；The control panel is electrically connected with the host；The input terminal of the control panel respectively with first air pressure dynamic Adjust mould group, reducer unit, the second air pressure dynamic regulation mould group, booster pump and its valve group and ablation needle electrical connection；The control The output end of plate is electrically connected with the input terminal of the relay board；The output end of the relay board respectively with first air pressure Dynamic regulation mould group, reducer unit, the second air pressure dynamic regulation mould group and solenoid valve in booster pump and its valve group and described disappear Melt needle electrical connection；The power supply is electrically connected with the host, control panel and relay board respectively；The argon gas source respectively with it is described First air pressure dynamic regulation mould group is connected with the inlet end of reducer unit；The helium gas source and the second air pressure dynamic regulation mould The inlet end connection of group；The first air pressure dynamic regulation mould group, reducer unit, the second air pressure dynamic regulation mould group and booster pump And its outlet side of valve group is connect with the inlet end of the ablation needle respectively.

2. cryosurgery system as described in claim 1, which is characterized in that the first air pressure dynamic regulation mould group includes Grain filter, safety valve, first class pressure transmitter, level-one solenoid valve, storage cylinder, secondary pressure transmitter, is put oil and gas filter Pneumoelectric magnet valve, two-stage electromagnetic valve and first gas distribute branch；The argon gas source is connect with the arrival end of the particulate filter, The outlet end of the particulate filter connects the arrival end of the oil and gas filter, the outlet end of the oil and gas filter with it is described The arrival end of safety valve connects, and the outlet end of the safety valve enters with the first class pressure transmitter and level-one solenoid valve respectively The connection of mouth end, the outlet end of the level-one solenoid valve are connect with the arrival end of the storage cylinder, the outlet end point of the storage cylinder It is not connect with the arrival end of the secondary pressure transmitter and two-stage electromagnetic valve, the outlet end of the two-stage electromagnetic valve and described the One gas distributes the arrival end connection of branch, and the outlet end of the first gas distribution branch and the air inlet of the ablation needle connect It connects；The outlet end of the first class pressure transmitter and secondary pressure transmitter is electrically connected with the input terminal of the control panel respectively； The outlet end of the safety valve is connect with the arrival end of the venting solenoid valve, and the outlet end of the venting solenoid valve connects exhaust Mouthful；The output end of the relay board divides with the level-one solenoid valve, venting solenoid valve, two-stage electromagnetic valve and first gas respectively With the solenoid valve electrical connection in branch；Gas flowmeter in the first gas distribution branch is electrically connected with the control panel.

3. cryosurgery system as claimed in claim 2, which is characterized in that the first gas distribution branch routing multichannel is mutual Gas distribution member in parallel is constituted；Each gas distribution member includes gas distribution solenoid valve, moisture filter and gas stream Meter；The arrival end of the gas distribution solenoid valve is connect with the outlet end of the two-stage electromagnetic valve, and the gas distributes electromagnetism The outlet end of valve is connect with the arrival end of the moisture filter, the outlet end of the moisture filter and the gas flowmeter Arrival end connection, the outlet end of the gas flowmeter connect with the air inlet of the ablation needle, the gas flowmeter and The input terminal of the control panel is electrically connected；The gas distribution solenoid valve is electrically connected with the output end of the relay board.

4. cryosurgery system as described in claim 1, which is characterized in that the reducer unit includes level-one solenoid valve, list Branch is distributed to valve, pressure reducing valve, pressure transmitter, two-stage electromagnetic valve and second gas；The argon gas source and the level-one electromagnetism The arrival end of valve connects, and the outlet end of the level-one solenoid valve is connect with the arrival end of the check valve, and the check valve goes out Mouthful end is connect with the arrival end of the pressure reducing valve, the outlet end of the pressure reducing valve respectively with the pressure transmitter and two-stage electromagnetic The arrival end of valve connects, and the outlet end of the two-stage electromagnetic valve is connect with the arrival end of second gas distribution branch, described The outlet end of second gas distribution branch is connect with the air inlet of the ablation needle；The outlet end of the pressure transmitter with it is described The input terminal of control panel is electrically connected；The output end of the relay board respectively with the level-one solenoid valve, two-stage electromagnetic valve and Two gases distribute the solenoid valve electrical connection in branch.

5. cryosurgery system as described in claim 1, which is characterized in that the second air pressure dynamic regulation mould group includes Grain filter, oil and gas filter, safety valve, pressure transmitter, level-one solenoid valve, venting solenoid valve and third gas distribution branch Road；The helium gas source is connect with the arrival end of the particulate filter, and the outlet end of the particulate filter connects the oil and gas The outlet end of the arrival end of filter, the oil and gas filter is connect with the arrival end of the safety valve, and the safety valve goes out Mouthful end is connect with the arrival end of the pressure transmitter and level-one solenoid valve respectively, the outlet end of the level-one solenoid valve with it is described Third gas distributes the arrival end connection of branch, the outlet end of the third gas distribution branch and the air inlet of the ablation needle Connection；The outlet end of the pressure transmitter is electrically connected with the input terminal of the control panel；The outlet end of the safety valve and institute The arrival end connection of venting solenoid valve is stated, the outlet end of the venting solenoid valve connects exhaust outlet；The output of the relay board End is electrically connected with the solenoid valve in the level-one solenoid valve, venting solenoid valve and third gas distribution branch respectively.

6. cryosurgery system as described in claim 1, which is characterized in that the booster pump and its valve group include particle filtering Device, booster pump, oil and gas filter, safety valve, pressure transmitter, level-one solenoid valve, venting solenoid valve and the 4th gas distribution branch Road；The arrival end of the particulate filter connects air-source, the entrance of the outlet end of the particulate filter and the booster pump End connection, the outlet end of the booster pump are connect with the arrival end of the oil and gas filter, the outlet end of the oil and gas filter Connect with the arrival end of the safety valve, the outlet end of the safety valve respectively with the pressure transmitter and level-one solenoid valve Arrival end connection, the outlet end of the level-one solenoid valve are connect with the arrival end of the 4th gas distribution branch, and the described 4th The outlet end of gas distribution branch is connect with the air inlet of the ablation needle；The outlet end of the pressure transmitter and the control The input terminal of plate is electrically connected；The outlet end of the safety valve is connect with the arrival end of the venting solenoid valve, the deflation electromagnetism The outlet end of valve connects exhaust outlet；The output end of the relay board respectively with the booster pump, level-one solenoid valve, deflation electromagnetism Solenoid valve electrical connection in valve and the 4th gas distribution branch.

7. the cryosurgery system as described in claim 4 or 5 or 6, which is characterized in that it is described second, third, the 4th gas point It is made of with branch multichannel gas distribution member parallel with one another；Each gas distribution member include gas distribution solenoid valve and Check valve；The arrival end of the gas distribution solenoid valve connect with air inlet pipeline, the gas distribute solenoid valve outlet end and The arrival end of the check valve connects, and the outlet end of the check valve is connect with the air inlet of the ablation needle；The gas point It is electrically connected with solenoid valve with the output end of the relay board.

8. cryosurgery system as described in claim 1, which is characterized in that the ablation needle includes ablation needle point, thermometric heat Galvanic couple, appendix, vacuum heat-insulating layer, heat exchanger, electric heating assembly, temperature sensor and ablation shank；The ablation needle point It is connect with ablation shank；The appendix front end is provided with throttle orifice；It is described ablation shank inner wall be provided with the vacuum every Thermosphere；The appendix is connect with the heat exchanger；The temperature thermocouple is set in the ablation shank；The electricity adds Hot component is mounted on the heat exchanger, and is electrically connected by heating interface with the relay board；The electric heating assembly On be provided with temperature sensor；The temperature thermocouple and temperature sensor are electrically connected with the input terminal of the control panel respectively.

9. cryosurgery system as claimed in claim 8, which is characterized in that the electric heating assembly is silica gel heating sheet or thin Film heating sheet；The temperature sensor is thermoelectricity occasionally thermistor.

10. cryosurgery system as described in claim 1, which is characterized in that the input equipment includes keyboard or mouse；Institute Stating display equipment includes liquid crystal display or touch liquid crystal display；The control panel includes that PID controller, parallel communication connect Mouth, serial communication interface, CPU, memory, DC-DC conversion module and photoelectrical coupler；The CPU leads to described parallel respectively Communication interface, serial communication interface, memory and photoelectrical coupler electrical connection；The PID controller and photoelectrical coupler electricity Connection；The DC-DC conversion module respectively with the PID controller, parallel communication interface, serial communication interface, CPU, storage Device and photoelectrical coupler electrical connection.