CN107951558A - The Cryoablation system of multifunctional gas pipeline control - Google Patents
The Cryoablation system of multifunctional gas pipeline control Download PDFInfo
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- CN107951558A CN107951558A CN201711105077.5A CN201711105077A CN107951558A CN 107951558 A CN107951558 A CN 107951558A CN 201711105077 A CN201711105077 A CN 201711105077A CN 107951558 A CN107951558 A CN 107951558A
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- temperature level
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00351—Heart
-
- 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
- A61B2018/0212—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques using an instrument inserted into a body lumen, e.g. catheter
-
- 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
- A61B2018/0231—Characteristics of handpieces or probes
-
- 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
- A61B2018/0231—Characteristics of handpieces or probes
- A61B2018/0262—Characteristics of handpieces or probes using a circulating cryogenic fluid
- A61B2018/0268—Characteristics of handpieces or probes using a circulating cryogenic fluid with restriction of flow
-
- 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
- A61B2018/0293—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques using an instrument interstitially inserted into the body, e.g. needle
Abstract
The present invention relates to a kind of Cryoablation system of multifunctional gas pipeline control, gas in gas cylinder flows through low-temperature level in low-temperature level freezing pipeline or first after main pipe rail and freezes low-temperature level freezing pipeline in pipeline or second or save Qi power adjustings freezing pipeline or process room temperature pipeline, cryoablation pin is entered by air inlet again, or gas flows through low-temperature level in backhaul room temperature pipeline or first after main pipe rail and freezes pipeline, then cryoablation pin is entered by gas returning port；The gas returned from cryoablation pin is emitted into air by flowing through backhaul gas exhaust piping after gas returning port, or is flowed through process gas exhaust piping by air inlet and be emitted into air.The present invention contributes to the process optimization of cryoablation operation using multi-functional gas piping control program, and the treatment of different temperatures shelves, ice hockey control can be achieved in same system, save gas, the raising function such as validity and security.
Description
Technical field
The present invention relates to a kind of medical instrument of cold therapy, especially a kind of multifunctional gas pipeline control program it is cold
Freeze ablation system.
Background technology
Cryoablation surgery systems are generally by the pipeline of host side and the delivery pipe of cryoablation pin by cryogenic fluid
The head of cryoablation pin is delivered to, is returned again along concentric tubes after pathological tissues are discharged with cold.Common cryosurgery device
Tool mainly has the liquid nitrogen cryosurgical system based on freezing by change of state and the argon helium knife based on throttling refrigeration.Controlled at present in malignant tumour cryoablation
In treatment, the argon helium knife of Endocare companies of U.S. production is most widely used.Argon helium knife has that cryoprobe is thin, operation wound
It is small, the advantages that surgical procedure facilitates, but it is higher there is also tool temperature, single needle ablation range is small, and high pressure argon gas and helium are not easy
Obtain, the deficiencies of the cost is relatively high of performing the operation.The cryogenic freezing treatment system of Shanghai Daoxiang Medical System Co., Ltd.'s production makes
The method for arriving cutter head again and throttling is arrived after host precooling with high pressure nitrogen so that it possesses the refrigerating capacity than argon helium knife bigger, together
When source of the gas more inexpensively easily take, reduce operation cost..
Argon helium knife fully relies on high pressure gas throttling and provides cold, therefore its host internal structure is simple, only containing a set of gas
The corresponding electronic component of body pipeline.Due to containing chilldown system in cryogenic freezing treatment system, also need to have concurrently freezing, rewarming,
The functions such as exhaust, in order to make full use of the cold of chilldown system, also utilize heat exchanger, therefore its structure is relatively more multiple containing return-air
It is miscellaneous.For conventional multitool system since the space for leaving gas piping for is limited, freezing and rewarming use same pipeline, and altogether
, can not be independent between multiple passages with a pressure reducing valve；In refrigerating process, operating pressure by the pressure reducing valve at gas cylinder into
Row is adjusted, and operating pressure needed for the cooling of cryoablation pin is of a relatively high, after cryoablation pin reaches lowest temperature, can suitably turn down
Operating pressure, it is possible thereby to gas consumption is saved, due to not being separately provided the gas piping of relatively low operating pressure, this
Kind pressure adjusts process and can only be completed by manpower, adds the complexity of operation；In addition, the system can only use nitrogen or
Argon gas is as source of the gas.The hilted broadsword Cryoablation system of Shanghai Daoxiang Medical System Co., Ltd.'s production such as flexible cryoprobe system, only
Interface containing a cryoablation pin or flexible cryoprobe, therefore, it has the more perfect gas of relatively sufficient space layout function
Pipeline.
The content of the invention
The present invention is carried for the deficiencies of existing Cryoablation system especially hilted broadsword system operatio is complicated, function is single
Gone out one kind combine low-temperature level freezing, the freezing of middle low-temperature level, save gas power adjusting freezing, into multiple functions such as backhaul rewarmings
Gas piping system.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of multifunctional gas pipeline control
Cryoablation system, including gas cylinder, main pipe rail, cryoablation pin, the gas in the gas cylinder flow through low temperature after main pipe rail
Low-temperature level freezes pipeline or saves Qi power adjustings freezing pipeline in low-temperature level freezing pipeline or second in level freezing pipeline or first
Or process room temperature pipeline, then cryoablation pin is entered by air inlet, or gas flows through backhaul room temperature pipe after main pipe rail
Low-temperature level freezes pipeline in road or first, then enters cryoablation pin by gas returning port；The gas returned from cryoablation pin leads to
Cross after gas returning port and flow through backhaul gas exhaust piping and be emitted into air, or process gas exhaust piping is flowed through by air inlet and is emitted into sky
In gas.
Described low-temperature level freezing pipeline includes sequentially connected first pressure reducing valve, second solenoid valve, the first check valve, the
One safety unloading valve, gas flows through low-temperature level freezing pipeline, then reaches air inlet using heat exchanger, low-temperature level heat exchanger by return-air
Mouthful.
Low-temperature level freezing pipeline includes sequentially connected 3rd pressure reducing valve, the 6th solenoid valve, the 4th list in described first
To valve, gas flows through middle low-temperature level freezing pipeline, then reaches air inlet or gas returning port by middle low-temperature level heat exchanger；Described
Low-temperature level freezing pipeline includes sequentially connected second pressure reducing valve, the four, the six solenoid valves in two, the 4th check valve, gas flows through
Middle low-temperature level freezes pipeline, then reaches air inlet by middle low-temperature level heat exchanger.
Province's Qi power adjustings freezing pipeline includes sequentially connected second pressure reducing valve, the 4th solenoid valve, flow control
Device processed, the first safety unloading valve, the second check valve, gas flow through province's Qi power adjustings freezing pipeline and return-air using heat exchanger,
Low-temperature level heat exchanger reaches air inlet.
The process room temperature pipeline include sequentially connected second pressure reducing valve, the four, the six solenoid valves, the 3rd check valve,
Gas directly reaches air inlet through process room temperature pipeline；The backhaul room temperature pipeline include sequentially connected 3rd pressure reducing valve,
5th solenoid valve, the 3rd check valve, the second safety unloading valve, gas directly reach gas returning port through backhaul room temperature pipeline.
The backhaul gas exhaust piping includes the 3rd solenoid valve and second temperature meter, and the gas returned from gas returning port flows through the
Three solenoid valves are emitted into air；The process gas exhaust piping includes the 7th solenoid valve and the 5th pressure gauge, is returned from air inlet
Gas flows through the 7th solenoid valve and is emitted into air.
The low-temperature level heat exchanger is the evaporator or vascular refrigerator or sterlin refrigerator of auto-cascading refrigeration system
Cold end.
The middle low-temperature level heat exchanger is the first order or second level condenser/evaporator or vascular of auto-cascading refrigeration system
Middle low-temperature zone below the cold end of refrigeration machine or sterlin refrigerator.
Gas in the gas cylinder is appointing in nitrogen, argon gas, nitrous oxide, carbon dioxide or nitrogen argon mixture gas
It is a kind of.
The cryoablation pin is the rigid cryoablation pin of percutaneous puncture, or is the flexible cryoprobe through natural cavity.
The beneficial effects of the invention are as follows：Combined in same host low-temperature level freezing, middle low-temperature level freezing, save gas
Power adjusting freezes, into the function such as backhaul rewarming and exhaust, and the freezing of different temperatures section is realized using multiple gases, is adapted to not
Same operation needs；Province's gas pattern can be automatically turned on, saves operation cost, can more accurately be realized by flow control different cold
Freeze the adjusting of power；Can be not pre-cooled and rewarming, the efficiency of raising rewarming function by being realized into backhaul room temperature pipeline；Can be from
Directly it is vented at air inlet or is released back into the excessive pressure of gas circuit from safety unloading valve, improves the security of operation.In addition, subtract
Pressure valve is built in host, avoids the manpower regulation at gas cylinder, gas cylinder can direct-connected host, add the convenience of operation.
Brief description of the drawings
Fig. 1 is the gas piping schematic diagram that the room temperature pipeline of the present invention and middle low-temperature level walk return line；
Fig. 2 is the gas piping schematic diagram that the room temperature pipeline of the present invention and middle low-temperature level walk process pipeline；
Fig. 3 be the present invention room temperature pipeline walk process pipeline, middle low-temperature level pipeline walk return line gas piping signal
Figure；
Fig. 4 be the present invention room temperature pipeline walk return line, middle low-temperature level pipeline walk process pipeline gas piping signal
Figure.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is further explained.
As shown in Figures 1 to 4, the Cryoablation system of multifunctional gas pipeline of the invention control, has four kinds of gases
Pipeline scheme, includes the 1, first to the 7th solenoid valve 2-8 of gas cylinder, the 9, first to the 3rd pressure reducing valve 10- of device for drying and filtering
12nd, first to fourth check valve 13-16, first, two safety unloading valve 17-18, flow controller 23, air inlet 21, gas returning port
22nd, return-air utilizes heat exchanger 19, low-temperature level heat exchanger 20, the 24, first to the 6th pressure gauge 25-30 of middle low-temperature level heat exchanger, the
One to the 6th thermometer 31-36.Fig. 1-Fig. 4 is different with the position where middle low-temperature level pipeline difference lies in room temperature pipeline, or
Positioned at process all the way or positioned at backhaul all the way.
Fig. 1 is the gas piping scheme that the room temperature pipeline of the present invention and middle low-temperature level pipeline walk return line.Room temperature pipe
Road and middle low-temperature level pipeline go on the return line on road, that is, low-temperature level exchanges heat in rewarming, not pre-cooled freezing and warp
The process of device, gas enter cryoablation pin from gas returning port 22, are then returned from air inlet 21, finally from 8 (process of solenoid valve
Gas exhaust piping) place's discharge.
Low-temperature level freezing pipeline includes sequentially connected first pressure reducing valve 10, second solenoid valve 3, the first check valve 13, the
One safety unloading valve 17, and second pressure meter 26, first, three, four thermometers 31,33,34, gas flows through low-temperature level cryovial
Road and return-air reach air inlet 21 using heat exchanger 19, low-temperature level heat exchanger 20.
Low-temperature level freezing pipeline includes sequentially connected 3rd pressure reducing valve 12, the 6th solenoid valve 7, the 4th check valve in first
16, and the 4th pressure gauge 28, the 6th thermometer 36, gas flows through middle low-temperature level freezing pipeline and middle low-temperature level heat exchanger 24,
Reach gas returning port 22；Low-temperature level cryovial includes the second pressure reducing valve 11, the four, the six solenoid valves 5, the 7, the 4th check valve in second
16th, the 3rd pressure gauge 27, the 6th thermometer 36, gas flow through middle low-temperature level freezing pipeline and middle low-temperature level heat exchanger 24, reach
Air inlet 21 (shown in Fig. 4).
Fig. 2 is the gas piping scheme that the room temperature pipeline of the present invention and middle low-temperature level walk process pipeline.The institute of the program
There is pipeline to enter cryoablation pin from air inlet 21, returned from air inlet 21, final cooled via return air utilizes heat exchanger and the 3rd electricity
Discharge at magnet valve 4 (backhaul gas exhaust piping) place.7th solenoid valve 8 (process gas exhaust piping) is only used for the pressure of fast discharging air inlet pipeline
Power.
Process room temperature pipeline include sequentially connected second pressure reducing valve 11, the four, the six solenoid valves 5, the 7, the 3rd check valve 15,
And the 3rd pressure gauge 27, gas directly reach air inlet 21 without heat exchanger.
Fig. 3 is that the room temperature pipeline of the present invention walks process pipeline, middle low-temperature level pipeline walks the gas piping scheme of return line.
Only middle low-temperature level pipeline walks return line, that is, the process of middle low-temperature level freezing, gas enter cryoablation from gas returning port 22
Pin, then returns from air inlet 21, is finally discharged from solenoid valve 8 (process gas exhaust piping).Room temperature pipeline, low-temperature level cryovial
Road, province's Qi power adjustings freezing pipeline enter cryoablation pin from air inlet 22.
Fig. 4 is that the room temperature pipeline of the present invention walks return line, middle low-temperature level pipeline walks the gas piping scheme of process pipeline.
Only room temperature pipeline walks return line, that is, rewarming or the process of not pre-cooled freezing, and gas disappears from gas returning port 22 into freezing
Melt pin, then returned from air inlet 21, finally discharged from solenoid valve 8 (process gas exhaust piping).Low-temperature level freezing, middle low-temperature level
Freezing, save gas power adjusting refrigerating process from air inlet 22 enter cryoablation pin.
Backhaul room temperature pipeline includes sequentially connected 3rd pressure reducing valve 12, the 5th solenoid valve 6, the 3rd check valve 15, second
Safety unloading valve 18, the 6th pressure gauge 30, gas directly reach gas returning port 22 without heat exchanger.
As Figure 1-Figure 4, main pipe rail includes solenoid valve 2, device for drying and filtering 9 and pressure gauge 25.Backhaul gas exhaust piping bag
The 3rd solenoid valve 4 and second temperature meter 32 are included, the gas stream cooled via return air returned from gas returning port utilizes 19 and the 3rd electromagnetism of heat exchanger
Valve 4 is emitted into air.Process gas exhaust piping includes the 7th solenoid valve 8 and the 5th pressure gauge 29, the gas returned from air inlet 21
Flow through the 7th solenoid valve 8 and be emitted into air.Saving Qi power adjustings freezing pipeline includes sequentially connected second pressure reducing valve 11, the
Four solenoid valves 5, flow controller 23, the first safety unloading valve 17, the second check valve 14, and the 3rd pressure gauge 27, first,
3rd, the 4th thermometer 31,33,34, gas flows through province's Qi power adjustings freezing pipeline and return-air utilizes heat exchanger 19, low-temperature level
Heat exchanger 20, reaches air inlet 21.
Low-temperature level heat exchanger 20 for auto-cascading refrigeration system evaporator or vascular refrigerator or sterlin refrigerator it is cold
End.Middle low-temperature level heat exchanger 24 for auto-cascading refrigeration system the first order or second level condenser/evaporator or vascular refrigerator or
Middle low-temperature zone below the cold end of sterlin refrigerator.
Gas in gas cylinder 1 is any of nitrogen, argon gas, nitrous oxide, carbon dioxide or nitrogen argon mixture gas.
Cryoablation pin is the rigid cryoablation pin of percutaneous puncture, or is the flexible cryoprobe through natural cavity.
Embodiment 1:
The example that low-temperature level freezing function uses is as follows：Pressure reducing valve 10 is arranged to the outlet pressure of 1500psi, freezing function
While unlatching, the first to the 3rd solenoid valve 2,3,4 is opened, gas freezes pipeline air inlet from low-temperature level, and first cooled via return air is utilized and changed
The unnecessary cold of the primary pre- cold recovery return-air of hot device 19, subsequently into low-temperature level heat exchanger 20 (such as auto-cascading refrigeration system
Evaporator) further it is cooled to lower temperature in advance, cryogenic gas enters cryoablation pin from air inlet 21, reaches syringe needle and passes through hair
The throttling action of tubule reaches than 20 lower temperature of low-temperature level heat exchanger, and the cold discharged at syringe needle is by tumour or other lesions
After tissue resorption, there is unnecessary cold cooled via return air mouth 22 to return, the unnecessary cold in this part will utilize heat exchanger into return-air
19 are recovered, and gas is finally exhausted in air after recycling.In refrigerating process, the five, the six pressure gauges 29,30 monitor in real time respectively
Into the pressure of return-air, when hypertonia, excessive pressure will be discharged respectively by first and second safety unloading valve 17,18.Freezing
After stopping, the three, the 7th solenoid valves 4,8 are opened, can remaining gas in quick release pipeline.First and third thermometer 31,33 with
And the five, the two thermometer 35,32 can monitor cold that return-air provided using heat exchanger 19, third and fourth thermometer 33,34 can supervise
Control the cold that low-temperature level heat exchanger 20 provides.
Embodiment 2:
Save gas power adjusting freezing function example it is as follows：Save gas pattern：Second pressure reducing valve 11 is arranged to 1200psi's
Outlet pressure, first turns on freezing, flow such as embodiment 1, and the syringe needle of cryoablation pin starts to cool down at this time, when syringe needle temperature reaches
To lowest temperature (as -150 DEG C) and return-air using the primary precooling sufficient (such as thermometer 33 reaches -70 DEG C) of heat exchanger after, close
Second solenoid valve 3, while the 4th solenoid valve 5 and flow controller 23 (full gate) are opened, thus the operating pressure of system is reduced to
1200psi, the gas flow of system decrease, but syringe needle temperature remains to maintain lowest temperature, so operation, to the cold of syringe needle
Influence is smaller, and can save the air consumption of gas cylinder 1.
Power adjusting pattern：, at this time can be with if needing to slow down the speed of ice hockey growth in operation or stopping the growth of ice hockey
The flow control value of flow controller 23 is turned down, is adjusted on the premise of it can maintain syringe needle temperature stabilization, the reduction of flow
Value is bigger, and the cold that syringe needle provides is smaller, it is possible thereby to slow down ice hockey growth, or just allows ice hockey to maintain existing size not
Become.
Embodiment 3:
The example of the not pre-cooled freezing functions of Fu Wen is as follows：As shown in Figure 1, rewarming process, the 3rd pressure reducing valve 12 is arranged to
300psi.After freezing, first to fourth solenoid valve 2,3,4,5 and flow controller 23 are closed, when opening rewarming function,
First, five, seven solenoid valves 2,6,8 are opened, gas directly enters returning for cryoablation pin without any precooling from gas returning port 22
Air pipe, enters capillary, which does not have throttling action, coordinates the heating module in cryoablation pin, can after reaching syringe needle
To reach good rewarming effect.Gas is returned from air inlet 21, then by 8 row of the 7th solenoid valve to air.Rewarming process
In, pressure gauge 30,29 monitors the pressure into return-air in real time respectively, when admission pressure is excessive, will be released by safety unloading valve 18
Let off high pressure.After rewarming stops, the three, the seven solenoid valves 4,8 are opened, remaining gas in quick release pipeline can be distinguished.
As shown in Fig. 2, rewarming process, the second pressure reducing valve 11 for meet to save gas power adjusting freezing function needs, still need to be arranged to
1200psi.After freezing, first to fourth solenoid valve 2,3,4,5 and flow controller 23 are closed, opens rewarming function
When, first, fourth, six solenoid valves 2,5,7 are opened, gas directly enters cryoablation pin without any precooling from air inlet 21
Air inlet pipeline, coordinates the heating module in cryoablation pin, achievees the purpose that rewarming in syringe needle.When the pipeline is not for pre-cooled
During freezing function, carbon dioxide can be used as source of the gas, the not pre-cooled syringe needle section for being directly entered cryoablation pin of carbon dioxide
The modus operandi such as stream refrigeration, which is used in the freezing biopsy of the flexible cryoprobe through natural cavity, jelly is cut, foreign matter extraction.
Embodiment 4:
The example of middle low-temperature level freezing function is as follows：If as shown in figure 3, without freezing (such as defibrillation freezing) on a large scale
Or it is too small using carbon freezing scope, nitrous oxide may be used as source of the gas, its syringe needle in cryoablation pin
- 90~-70 DEG C of middle low temperature is can reach, but its precooling temperature cannot be too low, and it is no that it will cause nitrous oxide frozen plug pipe
Road.About -30~-20 DEG C of the first order heat exchange temperature of Auto-cascade cycle system, can meet the precooling needs of nitrous oxide.Middle low temperature
Level freezing open when, open first, five, seven solenoid valves 2,6,8, at this time nitrous oxide after middle low-temperature level heat exchanger 24 from
Gas returning port 22 enters cryoablation pin, and cryoablation pin used herein need to access its air inlet pipeline from gas returning port 22, otherwise pin
Head can not throttling refrigeration.The gas of return is discharged by 21 and the 7th solenoid valve 8 of air inlet.Such as need to be vented, open the three, the seven electricity
Magnet valve 4,8.
As shown in figure 4, when low-temperature level freezes in being carried out using nitrous oxide, first, fourth, six, three solenoid valves need to be opened
2nd, 5,7,4, gas enters cryoablation pin after middle low-temperature level heat exchanger 24 from air inlet 21.Return to gas cooled via return air mouth
22nd, return-air utilizes heat exchanger 19 and 4 heel row of the 3rd solenoid valve to air.
Claims (10)
1. a kind of Cryoablation system of multifunctional gas pipeline control, including gas cylinder, main pipe rail, cryoablation pin, its feature
It is：Gas in the gas cylinder flows through low-temperature level freezing pipeline or the in low-temperature level freezing pipeline or first after main pipe rail
Low-temperature level freezing pipeline or province's Qi power adjustings freezing pipeline or process room temperature pipeline in two, then entered by air inlet and freezed
Ablation needle, or gas flow through low-temperature level in backhaul room temperature pipeline or first after main pipe rail and freeze pipeline, then pass through return-air
Mouth enters cryoablation pin；The gas returned from cryoablation pin is emitted into air by flowing through backhaul gas exhaust piping after gas returning port
In, or process gas exhaust piping is flowed through by air inlet and is emitted into air.
2. the Cryoablation system of multifunctional gas pipeline control according to claim 1, it is characterised in that：Described is low
Warm level freezing pipeline includes sequentially connected first pressure reducing valve (10), second solenoid valve (3), the first check valve (13), the first peace
Full unloading valve (17), gas flows through low-temperature level freezing pipeline, then utilizes heat exchanger (19), low-temperature level heat exchanger (20) by return-air
Reach air inlet (21).
3. the Cryoablation system of multifunctional gas pipeline control according to claim 1, it is characterised in that：Described
Low-temperature level freezing pipeline includes sequentially connected 3rd pressure reducing valve (12), the 6th solenoid valve (7), the 4th check valve (16) in one,
Gas flows through middle low-temperature level freezing pipeline, then reaches air inlet (21) or gas returning port (22) by middle low-temperature level heat exchanger (24)；
Low-temperature level freezing pipeline includes sequentially connected second pressure reducing valve (11), the four, the six solenoid valves (5,7), the in described second
Four check valves (16), gas flows through middle low-temperature level freezing pipeline, then reaches air inlet (21) by middle low-temperature level heat exchanger (24).
4. the Cryoablation system of multifunctional gas pipeline control according to claim 1, it is characterised in that：The province
Qi power adjustings freezing pipeline include sequentially connected second pressure reducing valve (11), the 4th solenoid valve (5), flow controller (23),
First safety unloading valve (17), the second check valve (14), gas flows through province's Qi power adjustings freezing pipeline and return-air utilizes heat exchange
Device (19), low-temperature level heat exchanger (20) reach air inlet (21).
5. the Cryoablation system of multifunctional gas pipeline control program according to claim 1, it is characterised in that：It is described
Process room temperature pipeline include sequentially connected second pressure reducing valve (11), the four, the six solenoid valves (5,7), the 3rd check valve (15),
Gas directly reaches air inlet (21) through process room temperature pipeline；The backhaul room temperature pipeline includes the sequentially connected 3rd decompression
Valve (12), the 5th solenoid valve (6), the 3rd check valve (15), the second safety unloading valve (18), gas are direct through backhaul room temperature pipeline
Reach gas returning port (22).
6. the Cryoablation system of multifunctional gas pipeline control according to claim 1, it is characterised in that：Described returns
Journey gas exhaust piping includes the 3rd solenoid valve (4) and second temperature meter (32), and the gas returned from gas returning port (22) flows through the 3rd electricity
Magnet valve (4) is emitted into air；The process gas exhaust piping includes the 7th solenoid valve (8) and the 5th pressure gauge (29), from air inlet
(21) gas returned flows through the 7th solenoid valve (8) and is emitted into air.
7. the Cryoablation system of multifunctional gas pipeline control according to claim 2, it is characterised in that：Described is low
Warm level heat exchanger (20) is the evaporator or the cold end of vascular refrigerator or sterlin refrigerator of auto-cascading refrigeration system.
8. the Cryoablation system of multifunctional gas pipeline control according to claim 3, it is characterised in that：In described
Low-temperature level heat exchanger (24) is the first order or second level condenser/evaporator or vascular refrigerator of auto-cascading refrigeration system or this spy
Middle low-temperature zone below the cold end of woods refrigeration machine.
9. the Cryoablation system controlled according to any multifunctional gas pipelines of claim 1-8, it is characterised in that：Institute
Gas in the gas cylinder stated is any of nitrogen, argon gas, nitrous oxide, carbon dioxide or nitrogen argon mixture gas.
10. the Cryoablation system controlled according to any multifunctional gas pipelines of claim 1-8, it is characterised in that：
The cryoablation pin is the rigid cryoablation pin of percutaneous puncture, or is the flexible cryoprobe through natural cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711105077.5A CN107951558B (en) | 2017-11-10 | 2017-11-10 | Multifunctional gas pipeline controlled cryoablation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711105077.5A CN107951558B (en) | 2017-11-10 | 2017-11-10 | Multifunctional gas pipeline controlled cryoablation system |
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| CN109620392A (en) * | 2018-12-11 | 2019-04-16 | 海杰亚（北京）医疗器械有限公司 | A kind of working medium distributing equipment and system for high/low temperature treatment |
| CN113616313A (en) * | 2021-08-12 | 2021-11-09 | 上海导向医疗系统有限公司 | Multi-channel cryoablation system and control method |
| CN114668481A (en) * | 2022-05-26 | 2022-06-28 | 上海导向医疗系统有限公司 | Dual-system cryotherapy system based on precooling of cryogenic refrigerator |
| CN115337092A (en) * | 2022-08-10 | 2022-11-15 | 海杰亚（北京）医疗器械有限公司 | Ablation system controlled according to temperature and temperature control method thereof |
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| CN114668481A (en) * | 2022-05-26 | 2022-06-28 | 上海导向医疗系统有限公司 | Dual-system cryotherapy system based on precooling of cryogenic refrigerator |
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| CN115337092A (en) * | 2022-08-10 | 2022-11-15 | 海杰亚（北京）医疗器械有限公司 | Ablation system controlled according to temperature and temperature control method thereof |
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