CN209301296U - A kind of freeze melting device - Google Patents
A kind of freeze melting device Download PDFInfo
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- CN209301296U CN209301296U CN201821165977.9U CN201821165977U CN209301296U CN 209301296 U CN209301296 U CN 209301296U CN 201821165977 U CN201821165977 U CN 201821165977U CN 209301296 U CN209301296 U CN 209301296U
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Abstract
The utility model discloses a kind of freeze melting devices, belong to cryoablation technical field, freeze melting device provided by the utility model, including freezing sacculus, conduit, media storage tank, medium supply line, dielectric film filter pipeline and cooling assembly.Freeze melting device danger coefficient provided by the utility model is low, easy to operate, easy to use, while also having many advantages, such as that cold utilizing ef- ficiency is high, temperature control is accurate.
Description
Technical field
The utility model relates to the field of medical instrument technology, and in particular to a kind of freeze melting device.
Background technique
Cryoablation is a kind of surgical technology of application freezing elimination target tissue, is chiefly used in treating tumour, atrial fibrillation
Etc. diseases.Its principle is to make using Cryo Equipment target tissue experience be cooled, freeze, rewarming process, and then generates cell
Irreversible damage or necrosis.Cryoablation equipment generally comprises cryoablation generator (host) and freezing balloon portion, cold
Freeze ablation generator (host) and be responsible for freezing sacculus and refrigerating medium is provided, freezing sacculus is mounted on catheter proximal end when use and is stretched
Enter portion into the human body, refrigerating medium is passed into freezing sacculus by cryoablation generator (host) out of conduit drops it
Temperature, and then cryoablation is carried out to target tissue.
Cryoablation generator in the prior art generally uses high pressure gas throttling refrigeration mode, utilizes high pressure gas
When flowing through adiabatic throttling after aperture, with the decline of pressure, temperature often changes, and utilizes the adiabatic throttling effect of gas
The cooling therapeutic process of achievable cryoablation.However, there is certain defect in actual use in the mode of high pressure gas throttling:
Firstly, high pressure gas danger coefficient is higher.Since the end sacculus of cryoablation is generally in human body, once gas pressure mistake
Height, may cause sacculus rupture, generate very big security threat to patient；Secondly, high pressure gas is consumables, requires supplementation with, make
With inconvenience；Again, equipment use is more demanding to operator, needs to be accompanied by practicing engineer during operation and operates.
Utility model content
Therefore, the technical problem to be solved by the present invention is to overcome freeze melting device in the prior art using
When danger coefficient is high, working medium consumes defect fast, inconvenient for use, and then provide that a kind of danger coefficient is low, loss of working substance is minimum, makes
With easy freeze melting device.
In order to solve the above-mentioned technical problem, the technical solution that the utility model provides is as follows:
A kind of freeze melting device, comprising:
Sacculus is freezed, wherein circulation has refrigerating medium, is in contact suitable for same tissue and cryoablation is carried out to it；
Conduit, with freezing sacculus connect, have medium input terminal and medium output end, be suitable for freezing sacculus in input with
Export refrigerating medium；
Media storage tank, wherein being stored with refrigerating medium；
Medium supply line, one end are connected to media storage tank, and the other end is connected to the medium input terminal of conduit；
Dielectric film filter pipeline, one end are connected to media storage tank, and the other end is connected to the medium output end of conduit；
Cooling assembly is connected with medium supply line, is changed suitable for carrying out refrigeration to the refrigerating medium in medium supply line
Heat.
As a kind of perferred technical scheme, the cooling assembly includes:
Cooling capacity generating device, for generating cooling capacity；
First Cooling capacity exchanging device, is mounted on medium supply line, and the cooling capacity generating device is to first cooling capacity
Switch provides cooling capacity, and the first Cooling capacity exchanging device is used to be situated between to the refrigerating in the first Cooling capacity exchanging device
Matter carries out cooling heat exchange；
As a kind of perferred technical scheme, the cooling assembly further include:
Second Cooling capacity exchanging device has the zone of heat liberation being mounted on the medium supply line and is mounted on described
Cold fluid pass on dielectric film filter pipeline generates Cooling capacity exchanging between the cold fluid pass and the zone of heat liberation, right
The refrigerating medium flowed through in the zone of heat liberation is pre-chilled；
The zone of heat liberation is connected between the media storage tank and the first Cooling capacity exchanging device.
As a kind of perferred technical scheme, further includes:
Bypass pipe, the bypass pipe are connected with medium supply line and dielectric film filter pipeline, and make medium supply line
The pre- cold loop of series connection media storage tank and the first Cooling capacity exchanging device is formed with dielectric film filter pipeline；
And it is connected between the bypass pipe and medium supply line by the first triple valve.
As a kind of perferred technical scheme, the cooling assembly further include:
Cold-storage device is mounted on dielectric film filter pipeline, is connected using bypass pipe with the first Cooling capacity exchanging device, is suitable for
Store the cooling capacity flowed out in the first Cooling capacity exchanging device.
As a kind of perferred technical scheme, the cooling assembly further include:
Heat-proof device has suitable for reducing or completely cutting off the heat-insulation chamber with external heat conduction, first Cooling capacity exchanging
Device, the second Cooling capacity exchanging device, cold-storage device and cooling capacity generating device cooling capacity output end be located in heat-insulation chamber.
As a kind of perferred technical scheme, the heat-proof device is cabinet, be equipped on the heat-proof device with it is heat-insulated
The vacuum evacuation device of chamber connection.
As a kind of perferred technical scheme, the heat-proof device is cabinet, is filled with insulation in the heat-insulation chamber.
It as a kind of perferred technical scheme, further include rewarming circuit, the rewarming circuit is used for the media storage
Refrigerating medium in tank is delivered to the medium input terminal of conduit in freeze melting device.
As a kind of perferred technical scheme, the rewarming circuit includes:
Rewarming pipe；
The media inlet end of the rewarming pipe is not entered described using the second triple valve and being mounted on medium supply line
The side of first Cooling capacity exchanging device is connected.
It as a kind of perferred technical scheme, further include rewarming circuit, the rewarming circuit is used for the media storage
The medium input terminal of conduit in freeze melting device is delivered to after refrigerating medium heating in tank.
As a kind of perferred technical scheme, the rewarming circuit includes:
Rewarming pipe, is in series with heat riser thereon；
The media inlet end of the rewarming pipe utilizes the second triple valve and the medium inlet port for entering the zone of heat liberation
Upstream be connected.
As a kind of perferred technical scheme, the rewarming circuit further include:
Rewarming return line, for connecting the medium output end of conduit in the freeze melting device and media storage tank
It is logical.
As a kind of perferred technical scheme, the rewarming return line includes:
Rewarming return pipe, both ends and dielectric film filter pipeline connection, and be in parallel with the second Cooling capacity exchanging device；
The media inlet end of the rewarming return pipe is connected using third triple valve with medium supply line.
As a kind of perferred technical scheme, the cooling assembly further include:
Heat-proof device has suitable for reducing or completely cutting off the heat-insulation chamber with external heat conduction, first Cooling capacity exchanging
Device, the second Cooling capacity exchanging device, cold-storage device and cooling capacity generating device cooling capacity output end be located in heat-insulation chamber；
The rewarming return pipe is in outside heat-proof device.
As a kind of perferred technical scheme, pumping is in series on the medium supply line or the dielectric film filter pipeline
Device, the flowing that the pumping installations is suitable for refrigerating medium provide power.
Technical solutions of the utility model have the advantages that
1, in freeze melting device provided by the utility model, including freezing sacculus, conduit, media storage tank, medium supply
Answer pipeline, dielectric film filter pipeline and cooling assembly；Circulation has refrigerating medium in freezing sacculus, is in contact simultaneously suitable for same tissue
Cryoablation is carried out to it；Conduit is connect with freezing sacculus, has medium input terminal and medium output end, is suitable for freezing sacculus
Inside output and input refrigerating medium；Refrigerating medium is stored in media storage tank, the refrigerating medium is low pressure liquid or gas
Or gas-liquid mixture；Medium supply line one end is connected to media storage tank, and the other end is connected to the medium input terminal of conduit；It is situated between
Matter recovery pipe one end is connected to media storage tank, and the other end is connected to the medium output end of conduit；Cooling assembly and medium supply
It answers pipeline to connect, provides cooling capacity suitable for the refrigerating medium into medium supply line.During carrying out cryoablation, carry
Cold medium is flowed according to following paths: along medium supply line after flowing out in media storage tank, by cooling assembly, being carried
The decline of cold medium temperature subsequently into the medium input terminal of conduit, and then flows in freezing sacculus across sacculus and target tissue
It is contacted, is then flowed out in dielectric film filter pipeline from the medium output end of conduit, be eventually returned to complete in media storage tank
One circulation.In above process since original high pressure gas has been substituted for refrigerating medium, refrigerating dielectric is carried out straight
Cooling refrigeration is connect, it is made to meet the low temperature requirements of cryoablation.Refrigerating medium is not allowed more to be also easy to produce quick-fried compared to high pressure gas
It is fried, it is thus possible to the danger coefficient of freeze melting device when in use to be effectively reduced, simultaneously as refrigerating medium can recycle benefit
With, because without supplementing high pressure gas in use, convenience when improving its use.In addition, low pressure refrigerating medium
Cooling method is single, only relies on cooling assembly and cools down, thus its temperature-fall period is compared and the drop by high pressure gas throttling
Warm mode is more easier to control, thus effectively reduces its operation difficulty, and operating doctor is accompanied and can be carried out without practicing engineer
Entire surgical procedure.
2, in freeze melting device provided by the utility model, the cooling assembly further includes the second Cooling capacity exchanging device,
It has the zone of heat liberation being mounted on the medium supply line and the cold fluid being mounted on the dielectric film filter pipeline
Channel generates Cooling capacity exchanging between the cold fluid pass and the zone of heat liberation, to flowing through in the zone of heat liberation
Refrigerating medium is pre-chilled；The zone of heat liberation be connected to the media storage tank and the first Cooling capacity exchanging device it
Between.When carrying out cryoablation, medium supply line, dielectric film filter pipeline, the conduit of Cryoablation system and freezing ball are utilized
Capsule circulates refrigerating medium, and in flow process, the cooling capacity generated at cooling capacity generating device passes through the first Cooling capacity exchanging
Device is delivered on medium supply line, and then is transported in human body by conduit and is carried out cryoablation to target tissue, with target
The refrigerating medium for carrying out Cooling capacity exchanging to tissue is then flow in dielectric film filter pipeline from conduit, and refrigerating medium at this time is still
Right remaining has part cooling capacity, and subsequent refrigerating medium is when flowing through dielectric film filter pipeline, due to the presence of the second Cooling capacity exchanging device,
Remaining cooling capacity can be conducted by the second Cooling capacity exchanging device to the refrigerating medium in medium supply line in refrigerating medium, be made
Refrigerating medium at this cools down in advance.In the above process, due to the second Cooling capacity exchanging device on medium supply line relative to
First Cooling capacity exchanging device is in the position of upstream, and the refrigerating medium temperature at this in medium supply line is higher than dielectric film filter pipe
Temperature in road, it is thus possible to guarantee that cooling capacity is conducted from dielectric film filter pipeline to medium supply line.By the above process, medium
The remaining cooling capacity of refrigerating medium in recovery pipe can cool down in advance to refrigerating medium, and it is cold into first to reduce refrigerating medium
Initial temperature when switch is measured, and then in the case where same Cooling capacity exchanging amount, this refrigerating by cooling down in advance is situated between
Matter can achieve lower temperature, and then reach this cryoablation mode directly freezed to low-pressure medium more likely
Temperature needed for cryoablation, while the utilization efficiency to cooling capacity can also be improved.
It 3, further include bypass pipe in freeze melting device provided by the utility model, the bypass pipe and medium supply pipe
Road is connected with dielectric film filter pipeline, and medium supply line and dielectric film filter pipeline is made to form series connection media storage tank and first
The pre- cold loop of Cooling capacity exchanging device；And it is connected between the bypass pipe and medium supply line by the first triple valve.
Using bypass pipe, refrigerating medium can be made to be passed through and carry out first being pre-chilled before cryoablation into the human body, in pre-cooling stage refrigerating
Medium comes out later from media storage tank followed by medium supply line, the first Cooling capacity exchanging device, bypass pipe and medium
Recovery pipe, and be eventually returned in media storage tank.Refrigerating medium temperature after pre-cooling is reduced, and is disappeared into freezing
There is lower initial temperature, using being just more easier to reach freezing after the cooling of the first Cooling capacity exchanging device when melting the stage
Low temperature needed for ablation.Therefore, the refrigerating medium that this measure can further improve the freeze melting device reaches cryoablation
A possibility that required temperature.
4, further include cold-storage device in freeze melting device provided by the utility model, be mounted on dielectric film filter pipeline,
It is connected using bypass pipe with the first Cooling capacity exchanging device, suitable for storing the cooling capacity flowed out in the first Cooling capacity exchanging device.Pre-
Cold stage, cold-storage device can store a part by refrigerating medium bring cooling capacity, and the cooling capacity of these storages is in cryoablation rank
It after section starts, can be cooled down in advance to the refrigerating medium reserved from human body, keep cold fluid at the second Cooling capacity exchanging device logical
The temperature difference at road and zone of heat liberation increases, and improves the Cooling capacity exchanging rate at the second Cooling capacity exchanging device, and then supply medium
The temperature of the refrigerating medium in pipeline is answered to further decrease, these pass through the first Cooling capacity exchanging by the refrigerating medium to cool down in advance
Device carries out that lower temperature can be reached after finally cooling down.Therefore, this measure may further ensure that this cryoablation fills
Low temperature needed for capable of reaching cryoablation is set, and the utilization efficiency of cooling capacity can be further increased, reduces cooling capacity waste.
It 5, further include heat-proof device in freeze melting device provided by the utility model, the heat-proof device, which has, to be suitable for
Reduce or completely cut off the heat-insulation chamber with external heat conduction, the first Cooling capacity exchanging device, the second Cooling capacity exchanging device, cold-storage
The cooling capacity output end of device and cooling capacity generating device is located in heat-insulation chamber.Using heat-proof device, can be avoided in Cooling capacity exchanging mistake
The loss of cooling capacity occurs in journey, while the heat insulation effect of cold-storage device is also more preferable, avoids cold-storage device in the process of storage cooling capacity
The middle loss that cooling capacity occurs.
6, in freeze melting device provided by the utility model, the heat-proof device is cabinet, is pacified on the heat-proof device
Equipped with the vacuum evacuation device being connected to heat-insulation chamber.The loss speed of cooling capacity can be further decreased close to the heat-insulation chamber of vacuum state
Rate makes freeze melting device further increase the utilization efficiency to cooling capacity.
It 7, further include rewarming circuit in freeze melting device provided by the utility model, the rewarming circuit is used for institute
State the medium input terminal that the refrigerating medium heating in storage tank is delivered to conduit in freeze melting device later.In cryoablation
In, the target tissue after freezing will carry out rewarming, and the process of ideal rewarming can be improved the operation effect of cryoablation
Fruit, and reduce the probability of the generation of postoperative complications.The rewarming circuit provided in the utility model can to refrigerating medium into
Row heating, and be delivered at target tissue by conduit, this rewarming circuit being separately provided is not only able to meet cryoablation
Art carries out the needs of rewarming, and is very beneficial for carrying out more accurate control to the temperature, process and time of rewarming, in turn
It improves surgical cure rate, reduce postoperative complications.
8, in freeze melting device provided by the utility model, the rewarming circuit includes rewarming pipe, on the rewarming pipe
It is in series with heat riser；The media inlet end of the rewarming pipe utilizes the second triple valve and the entrance for entering the zone of heat liberation
The upstream of mouth is connected.After rewarming pipe is connected with the upstream of the second Cooling capacity exchanging device on medium supply line, rewarming
Pipe and the first Cooling capacity exchanging device and the second Cooling capacity exchanging device form parallel connection, the pipeline used of refrigerating medium heating at this time with
It is respectively independent between cooling pipeline used.Therefore it can be avoided the residual of the first Cooling capacity exchanging device and the second Cooling capacity exchanging device
It stays cooling capacity to interfere in temperature-rise period of the rewarming stage to refrigerating medium, reduces the disturbing factor of rewarming process, make rewarming process
Control easily facilitate control.
9, in freeze melting device provided by the utility model, the rewarming circuit further includes rewarming return line, rewarming
Return line is for the medium output end of conduit in the freeze melting device to be connected to media storage tank.What is be separately provided answers
Warm return line can be such that the formation of rewarming process is made of media storage tank, rewarming pipe, freeze melting device, rewarming return line
Independent rewarming circuit keep the Process flowchart of rewarming more smart so as to be further reduced the disturbing factor during rewarming
It is quasi-.
It 10, further include heat-proof device in freeze melting device provided by the utility model, the heat-proof device, which has, to be suitable for
Reduce or completely cut off the heat-insulation chamber with external heat conduction, the first Cooling capacity exchanging device, the second Cooling capacity exchanging device, cold-storage
The cooling capacity output end of device and cooling capacity generating device is located in heat-insulation chamber；The rewarming return pipe is in outside heat-proof device.It will
Rewarming return pipe is arranged in after the outside of heat-proof device, can be avoided refrigerating medium of the rewarming return pipe after conveying rewarming
When take away cooling capacity in cold-storage device or the second Cooling capacity exchanging device, improve the utilization rate of cooling capacity.
In conclusion freeze melting device danger coefficient provided by the utility model is low, easy to operate, easy to use, together
When also have many advantages, such as that cold utilizing ef- ficiency is high, temperature control is accurate.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural scheme of mechanism of the freeze melting device provided in the utility model embodiment 1；
Fig. 2 is that refrigerating medium of the freeze melting device shown in Fig. 1 in the pre-cooling stage flows to schematic diagram；
Fig. 3 is that refrigerating medium of the freeze melting device in the cryoablation stage shown in Fig. 1 flows to schematic diagram；
Fig. 4 is that refrigerating medium of the freeze melting device in the rewarming stage shown in Fig. 1 flows to schematic diagram；
Description of symbols:
1- media storage tank, 2- medium supply line, 3- dielectric film filter pipeline, 4- cooling capacity generating device, the first cooling capacity of 5-
Switch, 6- the second Cooling capacity exchanging device, 7- conduit, 8- freeze sacculus, 9- bypass pipe, the first triple valve of 10-, 11- cold-storage
Device, 12- heat-proof device, 13- heat-insulation chamber, 14- vacuum evacuation device, 15- rewarming pipe, 16- heat riser, the second triple valve of 17-,
18- rewarming return pipe, 19- third triple valve, 20- pumping installations, 21- flowmeter, 22- thermometer, 23- check valve, 24- heat dissipation
Device.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can be combined with each other.
Embodiment 1:
As shown in Figures 1 to 4, it is the embodiments of the present invention 1, present embodiments provides a kind of freeze melting device,
Including freezing sacculus 8, conduit 7, media storage tank 1, medium supply line 2, dielectric film filter pipeline 3 and cooling assembly；Freeze ball
Circulation has refrigerating medium in capsule 8, is in contact suitable for same tissue and carries out cryoablation to it；Conduit 7 and freezing sacculus 8 connect
It connects, there is medium input terminal and medium output end, suitable for outputting and inputting refrigerating medium into freezing sacculus 8；Media storage tank 1
In be stored with refrigerating medium, the refrigerating medium is low-pressure medium；2 one end of medium supply line is connected to media storage tank 1, separately
The liquid feeding end of one end conduit 7 is connected to；3 one end of dielectric film filter pipeline is connected to media storage tank 1, the outlet end of other end conduit 7
Connection；Cooling assembly is connected with medium supply line 2, suitable for the refrigerating medium cooling heat exchange in medium supply line 2.
During carrying out cryoablation, refrigerating medium is flowed according to following paths: along medium supply line 2
After flowing out in media storage tank 1, by cooling assembly, the decline of refrigerating medium temperature is inputted subsequently into the medium of conduit 7
End, and then flow in freezing sacculus 8 and contacted across sacculus with target tissue, then flowed out from the medium output end of conduit 7
Into dielectric film filter pipeline 3, it is eventually returned to complete a circulation in media storage tank 1.In above process due to will be original
High pressure gas has been substituted for refrigerating medium, directly freezes to refrigerating medium, compared to high pressure gas, does not allow more to be also easy to produce
Explosion, it is thus possible to the danger coefficient of freeze melting device when in use be effectively reduced, simultaneously as the refrigerating medium of low pressure can
To recycle, because without supplementing high pressure gas in use, convenience when improving its use.In addition, low pressure carries
The cooling method of cold medium is single, only relies on cooling assembly and cools down, thus its temperature-fall period is compared and relies on high pressure gas
The cooling method of throttling is more easier to control, thus effectively reduces its operation difficulty, and operating doctor is accompanied without practicing engineer
It can carry out entire surgical procedure.
As the specific embodiment of cooling assembly, cooling assembly includes cooling capacity generating device 4, the first Cooling capacity exchanging device
5 and the second Cooling capacity exchanging device 6.Cooling capacity generating device 4 is for providing cooling capacity；First Cooling capacity exchanging device 5 is mounted on medium confession
It answers on pipeline 2, the cooling capacity generating device 4 provides cooling capacity, the first Cooling capacity exchanging dress to the first Cooling capacity exchanging device 5
5 are set for carrying out cooling heat exchange to the refrigerating medium in the first Cooling capacity exchanging device 5；Second Cooling capacity exchanging device 6
With the zone of heat liberation being mounted on the medium supply line 2 and the cold fluid being mounted on the dielectric film filter pipeline 3
Channel generates Cooling capacity exchanging between the cold fluid pass and the zone of heat liberation, to flowing through in the zone of heat liberation
Refrigerating medium is pre-chilled；The zone of heat liberation be connected to the media storage tank 1 and the first Cooling capacity exchanging device 5 it
Between.
When above-mentioned cooling assembly participates in carrying out cryoablation, medium supply line 2, dielectric film filter pipeline 3, freezing are utilized
The conduit 7 and freezing sacculus 8 of ablation system circulate refrigerating medium, raw at cooling capacity generating device 4 in flow process
At cooling capacity be delivered on medium supply line 2 by the first Cooling capacity exchanging device 5, and then be transported in human body by conduit 7
Cryoablation is carried out to target tissue, the refrigerating medium for carrying out Cooling capacity exchanging with target tissue then flow to Jie from conduit 7
In matter recovery pipe 3, refrigerating medium still remaining at this time has part cooling capacity, and subsequent refrigerating medium is flowing through dielectric film filter pipeline
When 3, due to the presence of the second Cooling capacity exchanging device 6, remaining cooling capacity can be passed by the second Cooling capacity exchanging device 6 in refrigerating medium
It is directed on the refrigerating medium in medium supply line 2, the refrigerating medium at this is made to cool down in advance.
In the above process, since the second Cooling capacity exchanging device 6 fills on medium supply line 2 relative to the first Cooling capacity exchanging
5 positions for being in upstream are set, the refrigerating medium temperature at this in medium supply line 2 is higher than the temperature in dielectric film filter pipeline 3,
Thus it can guarantee that cooling capacity is conducted from dielectric film filter pipeline 3 to medium supply line 2.By the above process, dielectric film filter pipeline 3
The remaining cooling capacity of interior refrigerating medium can cool down in advance to refrigerating medium, reduce refrigerating medium and fill into the first Cooling capacity exchanging
Initial temperature when setting 5, and then in the case where same Cooling capacity exchanging amount, this refrigerating medium by cooling down in advance can reach
To lower temperature, and then so that this cryoablation mode directly freezed to low-pressure medium is more likely reached freezing and disappear
Melt required temperature, while the utilization efficiency to cooling capacity can also be improved.
Specifically, the cooling capacity generating device 4 in the present embodiment is specially to be capable of providing the miniature of -120 DEG C or less cold sources to surpass
Cryo Refrigerator can be the forms such as pulse tube, Stirling, mixed work medium for throttling, thermoacoustic, and quantity can be one or more,
When multi-platform combined work, associated form can be in series or in parallel.Refrigerating medium in the present embodiment is that freezing point is lower
Medium, such as dehydrated alcohol.
It further include bypass pipe 9 to further reduce the attainable minimum temperature of refrigerating medium institute, the bypass pipe 9
It is connected with medium supply line 2 and dielectric film filter pipeline 3, and medium supply line 2 and dielectric film filter pipeline 3 is made to form series connection
The pre- cold loop of media storage tank 1 and the first Cooling capacity exchanging device 5；And pass through between the bypass pipe 9 and medium supply line 2
First triple valve 10 is connected to.
Using bypass pipe 9, refrigerating medium can be made to be passed through and carry out first being pre-chilled before cryoablation into the human body, be pre-chilled
Stage refrigerating medium is come out later from media storage tank 1 followed by medium supply line 2, the first Cooling capacity exchanging device 5, side
Siphunculus 9 and dielectric film filter pipeline 3, and be eventually returned in media storage tank 1.Refrigerating medium temperature after pre-cooling is dropped
It is low, enter the cryoablation stage when have lower initial temperature, using the first Cooling capacity exchanging device 5 cooling after just
It is more easier low temperature needed for reaching cryoablation.Therefore, it is refrigerating that this measure, which can further improve the freeze melting device,
Medium reaches a possibility that cryoablation required temperature.
As a kind of improvement embodiment of freeze melting device, further includes cold-storage device 11, be mounted on dielectric film filter pipe
On road 3, it is connected using bypass pipe 9 with the first Cooling capacity exchanging device 5, suitable for what is flowed out in the first Cooling capacity exchanging device 5 of storage
Cooling capacity.In the present embodiment, cold-storage device 11 is specially the cabinet filled with the higher cool storage medium of specific heat capacity, dielectric film filter pipeline
3 pass through cold-storage device 11, and Cooling capacity exchanging occurs using the cool storage medium in the side wall and cold-storage device 11 of pipeline.
In the pre-cooling stage, cold-storage device 11 can store a part by refrigerating medium bring cooling capacity, these are stored cold
Amount can cool down in advance to the refrigerating medium reserved from human body, make the second Cooling capacity exchanging after the cryoablation stage starts
The temperature difference at device 6 at cold fluid pass and zone of heat liberation increases, and improves the Cooling capacity exchanging speed at the second Cooling capacity exchanging device 6
Rate, and then the temperature of the refrigerating medium in medium supply line 2 is further decreased, these pass through the refrigerating medium to cool down in advance
Lower temperature can be reached after finally being cooled down by the first Cooling capacity exchanging device 5.Therefore, this measure can be further
Guarantee low temperature needed for this freeze melting device can reach cryoablation, and can further increase cooling capacity utilizes effect
Rate reduces cooling capacity waste.
In order to reduce cooling capacity be lost, further include heat-proof device 12, the heat-proof device 12 have suitable for reduce or isolation with
The heat-insulation chamber 13 of external heat conduction, the first Cooling capacity exchanging device 5, the second Cooling capacity exchanging device 6,11 and of cold-storage device
The cooling capacity output end of cooling capacity generating device 4 is located in heat-insulation chamber 13.Using heat-proof device 12, can be avoided in Cooling capacity exchanging process
The middle loss that cooling capacity occurs, while the heat insulation effect of cold-storage device 11 is also more preferable, avoids cold-storage device 11 in the mistake of storage cooling capacity
The loss of cooling capacity occurs in journey.
Specifically, the heat-proof device 12 is cabinet, the pumping being connected to heat-insulation chamber 13 is installed on the heat-proof device 12
Vacuum plant 14.The bleed rate that cooling capacity can be further decreased close to the heat-insulation chamber 13 of vacuum state, makes freeze melting device
Further increase the utilization efficiency to cooling capacity.Vacuum evacuation device 14 is specially minipump.
As another alternate embodiments of heat-proof device, the heat-proof device 12 is cabinet, in the heat-insulation chamber 13
Filled with insulation, insulation can be using heat-insulating materials such as polyurethane foam material or aeroges herein.
In order to meet target tissue in cryoablation for needing the needs of rewarming after freezing, further include in the present embodiment
Rewarming circuit, the rewarming circuit are used to be delivered in freeze melting device after the refrigerating medium heating in the storage tank
The medium input terminal of conduit 7.In cryoablation, the target tissue after freezing will carry out rewarming, ideal rewarming
Process can be improved the surgical effect of cryoablation, and reduce the probability of the generation of postoperative complications.In the utility model
The rewarming circuit of offer can heat refrigerating medium, and be delivered at target tissue by conduit 7, this to be separately provided
Rewarming circuit be not only able to meet cryoablation and carry out the needs of rewarming, and be very beneficial for the temperature to rewarming, into
Journey and time carry out more accurate control, and then improve surgical cure rate, reduce postoperative complications.
Specifically, the rewarming circuit includes rewarming pipe 15, heat riser 16 is in series on the rewarming pipe 15；It is described multiple
The media inlet end of warm pipe 15 is connected using the second triple valve 17 with the upstream for the inlet port for entering the zone of heat liberation.Pass through
After rewarming pipe 15 is connected with the upstream of the second Cooling capacity exchanging device 6 on medium supply line 2, rewarming pipe 15 and the first cooling capacity
Switch 5 and the second Cooling capacity exchanging device 6 form parallel connection, used in refrigerating medium heating at this time pipeline and cooling used
It is respectively independent between pipeline.Therefore it can be avoided the first Cooling capacity exchanging device 5 and the residual cooling capacity of the second Cooling capacity exchanging device 6 exist
The rewarming stage interferes the temperature-rise period of refrigerating medium, reduces the disturbing factor of rewarming process, makes the control of rewarming process more
Add convenient for control.
As a kind of alternate embodiments in above-mentioned rewarming circuit, the rewarming circuit includes: rewarming pipe 15；The rewarming
The media inlet end of pipe 15 does not enter first Cooling capacity exchanging with being mounted on medium supply line 2 using the second triple valve 17
The side of device 5 is connected.In the alternate embodiments, without series connection heat riser on rewarming circuit, but only will it not pass through
Overcooled refrigerating medium is passed into participation rewarming process in conduit, carries out rewarming using the self heat of human body.This measure makes target
Heating to tissue is milder, reduces damage of the cryoablation to health tissues.
As the further improvement in rewarming circuit, the rewarming circuit further includes rewarming return line, rewarming return line
Recovery port connection for the medium output end of conduit 7 in the freeze melting device to be connected to media storage tank 1.Individually set
The rewarming return line set can be such that rewarming process is formed by media storage tank 1, rewarming pipe 15, freeze melting device, rewarming time
The independent rewarming circuit of flow tube road composition makes the process of rewarming so as to be further reduced the disturbing factor during rewarming
It controls more accurate.
Specifically, rewarming return line includes rewarming return pipe 18, both ends are connected to dielectric film filter pipeline 3, and with
Two Cooling capacity exchanging devices 6 are in parallel；The media inlet end of the rewarming return pipe 18 is supplied using third triple valve 19 and medium
Pipeline 2 is connected.Further, the rewarming return pipe 18 is in outside heat-proof device 12.By rewarming return pipe 18 setting every
After the outside of thermal 12, it can be avoided rewarming return pipe 18 and take away cold-storage dress when conveying the refrigerating medium after rewarming
11 or the second cooling capacity in Cooling capacity exchanging device 6 are set, the utilization rate of cooling capacity is improved.
In order to guarantee the smooth circulation of refrigerating medium, connect on the medium supply line 2 or the dielectric film filter pipeline 3
There is pumping installations 20, the flowing that the pumping installations 20 is suitable for refrigerating medium provides power.
The freeze melting device provided in the present embodiment further includes operating device.Operating device includes handle and extremely moves device,
Ablation target tissue is reached for operating conduit 7.When carrying out cryoablation, conduit 7 is the pipe of transporting low temperature refrigerating medium
Road, use is with a certain toughness, and thermal coefficient is lesser, and the material with physiology compatibility is made, internal with multiple
Runner, respectively refrigerating medium into and out of runner, function channel and separate cavities.Refrigerating medium disengaging runner is distributed in two sides,
To be thermally shielded to disengaging fluid, hot short circuit is avoided.Function channel is located at 7 center of conduit, for function such as sensor and seal wires
The cabling of energy component, separate cavities are distributed in the both ends of refrigerating medium runner, for being further reduced the heat exchange of disengaging fluid.It leads
Heat-insulating material is wrapped up outside pipe 7, the heat transfer of cold medium and external tissue is contained for reducing conduit 7, on the one hand reduces and carries
Cold medium leakage heat, on the other hand avoids 7 outside wall surface temperature of conduit is too low tissue is caused to freeze.Sacculus 8 is freezed to be used for targeting group
Knit carry out cryoablation, inside have a medium inlet and media outlet, medium inlet mouthful is connected with 7 influent stream road of conduit, and medium goes out
Mouth is connected with the runner that goes out of conduit 7.After sacculus is contacted with tissue, refrigerating medium is exchanged heat by balloon wall and tissue.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes among the protection scope created still in the utility model.
Claims (16)
1. a kind of freeze melting device characterized by comprising
It freezes sacculus (8), wherein circulation has refrigerating medium, is in contact suitable for same tissue and cryoablation is carried out to it；
Conduit (7) is connect with freezing sacculus (8), has medium input terminal and medium output end, is suitable for into freezing sacculus (8)
Output and input refrigerating medium；
Media storage tank (1), wherein being stored with refrigerating medium；
Medium supply line (2), one end are connected to media storage tank (1), and the other end is connected to the medium input terminal of conduit (7)；
Dielectric film filter pipeline (3), one end are connected to media storage tank (1), and the other end is connected to the medium output end of conduit (7)；
Cooling assembly is connected with medium supply line (2), is suitable for freezing to the refrigerating medium in medium supply line (2)
Heat exchange.
2. a kind of freeze melting device according to claim 1, which is characterized in that the cooling assembly includes:
Cooling capacity generating device (4), for generating cooling capacity；
First Cooling capacity exchanging device (5), is mounted on medium supply line (2), cooling capacity generating device (4) Xiang Suoshu first
Cooling capacity exchanging device (5) provides cooling capacity, and the first Cooling capacity exchanging device (5) is used for by way of the first Cooling capacity exchanging device
(5) the refrigerating medium in carries out cooling heat exchange；
3. a kind of freeze melting device according to claim 2, which is characterized in that the cooling assembly further include:
Second Cooling capacity exchanging device (6) has the zone of heat liberation being mounted on the medium supply line (2) and is mounted on institute
The cold fluid pass on matter recovery pipe (3) is given an account of, cooling capacity is generated between the cold fluid pass and the zone of heat liberation and is handed over
It changes, the refrigerating medium flowed through in the zone of heat liberation is pre-chilled；
The zone of heat liberation is connected between the media storage tank (1) and the first Cooling capacity exchanging device (5).
4. a kind of freeze melting device according to claim 2, which is characterized in that further include:
Bypass pipe (9), the bypass pipe (9) is connected with medium supply line (2) and dielectric film filter pipeline (3), and makes medium
Supply line (2) and dielectric film filter pipeline (3) form the pre-cooling of series connection media storage tank (1) and the first Cooling capacity exchanging device (5)
Circuit；
And it is connected between the bypass pipe (9) and medium supply line (2) by the first triple valve (10).
5. a kind of freeze melting device according to claim 3, which is characterized in that the cooling assembly further include:
Cold-storage device (11) is mounted on dielectric film filter pipeline (3), utilizes bypass pipe (9) and first Cooling capacity exchanging device (5) phase
Connection is suitable for storing the cooling capacity flowed out in the first Cooling capacity exchanging device (5).
6. a kind of freeze melting device according to claim 5, which is characterized in that the cooling assembly further include:
Heat-proof device (12) has suitable for reducing or completely cutting off the heat-insulation chamber (13) with external heat conduction, first cooling capacity
Switch (5), the second Cooling capacity exchanging device (6), cold-storage device (11) and cooling capacity generating device (4) cooling capacity output end be located at
In heat-insulation chamber (13).
7. a kind of freeze melting device according to claim 6, which is characterized in that the heat-proof device (12) is cabinet,
The vacuum evacuation device (14) being connected to heat-insulation chamber (13) is installed on the heat-proof device (12).
8. a kind of freeze melting device according to claim 6, which is characterized in that the heat-proof device (12) is cabinet,
Insulation is filled in the heat-insulation chamber (13).
9. a kind of freeze melting device according to claim 2, which is characterized in that further include rewarming circuit, the rewarming
The medium that circuit is used to for the refrigerating medium in the media storage tank (1) being delivered to conduit in freeze melting device (7) inputs
End.
10. a kind of freeze melting device according to claim 9, which is characterized in that the rewarming circuit includes:
Rewarming pipe (15)；
The media inlet end of the rewarming pipe (15) using the second triple valve (17) and be mounted on medium supply line (2) not into
The side for entering the first Cooling capacity exchanging device (5) is connected.
11. a kind of freeze melting device according to claim 2, which is characterized in that further include rewarming circuit, the rewarming
Circuit is used to that conduit in freeze melting device (7) will to be delivered to after the refrigerating medium heating in the media storage tank (1)
Medium input terminal.
12. a kind of freeze melting device according to claim 11, which is characterized in that the rewarming circuit includes:
Rewarming pipe (15) is in series with heat riser (16) thereon；
The media inlet end of the rewarming pipe (15) using the second triple valve (17) and enter the zone of heat liberation medium into
The upstream of entrance is connected.
13. a kind of freeze melting device according to claim 9, which is characterized in that the rewarming circuit further include:
Rewarming return line, for connecting the medium output end of conduit (7) in the freeze melting device and media storage tank (1)
It is logical.
14. a kind of freeze melting device according to claim 13, which is characterized in that the rewarming return line includes:
Rewarming return pipe (18), both ends are connected to dielectric film filter pipeline (3), and are in parallel with the second Cooling capacity exchanging device (6)；
The media inlet end of the rewarming return pipe (18) is connected using third triple valve (19) with medium supply line (2).
15. a kind of freeze melting device according to claim 14, which is characterized in that the cooling assembly further include:
Heat-proof device (12) has suitable for reducing or completely cutting off the heat-insulation chamber (13) with external heat conduction, first cooling capacity
Switch (5), the second Cooling capacity exchanging device (6), cold-storage device (11) and cooling capacity generating device (4) cooling capacity output end be located at
In heat-insulation chamber (13)；
It is external that the rewarming return pipe (18) is in heat-proof device (12).
16. according to claim 1 to a kind of freeze melting device described in any one of 15, which is characterized in that the medium
It is in series with pumping installations (20) on supply line (2) or the dielectric film filter pipeline (3), the pumping installations (20) is suitable for carrying
The flowing of cold medium provides power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821165977.9U CN209301296U (en) | 2018-07-23 | 2018-07-23 | A kind of freeze melting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821165977.9U CN209301296U (en) | 2018-07-23 | 2018-07-23 | A kind of freeze melting device |
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| Publication Number | Publication Date |
|---|---|
| CN209301296U true CN209301296U (en) | 2019-08-27 |
Family
ID=67668502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821165977.9U Withdrawn - After Issue CN209301296U (en) | 2018-07-23 | 2018-07-23 | A kind of freeze melting device |
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| Country | Link |
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| CN (1) | CN209301296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009406A (en) * | 2018-07-23 | 2018-12-18 | 山前（珠海）医疗科技有限公司 | A kind of freeze melting device and cryoablation method |
-
2018
- 2018-07-23 CN CN201821165977.9U patent/CN209301296U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009406A (en) * | 2018-07-23 | 2018-12-18 | 山前（珠海）医疗科技有限公司 | A kind of freeze melting device and cryoablation method |
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