CN209236366U - Cold-therapy device - Google Patents
Cold-therapy device Download PDFInfo
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- CN209236366U CN209236366U CN201821338627.8U CN201821338627U CN209236366U CN 209236366 U CN209236366 U CN 209236366U CN 201821338627 U CN201821338627 U CN 201821338627U CN 209236366 U CN209236366 U CN 209236366U
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- cold
- heat exchanger
- therapy device
- heat
- cryogen vessel
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Abstract
The utility model relates to a kind of cold-therapy devices, belong to cryoablation technical field, solve the problems, such as complicated existing cold-therapy device huge structure, not easy to operate and control, can not steadily control cooling capacity output.Cold-therapy device includes gas source, cryogen vessel, heat-exchange device and conduit；Heat-exchange device includes connecting tube and heat exchanger, and the quantity of heat exchanger is multiple and is arranged in parallel that heat exchanger is arranged in cryogen vessel and connect by connecting tube with gas source；Cryogen vessel is externally provided with insulating layer；Conduit includes tube body and effectively freezing region, tube body are interior equipped with air inlet pipe and muffler；Air inlet pipe will be delivered to effectively freezing region, circuit of the muffler as refrigerant by the gas of cryogen vessel.The utility model realizes cryoablation technology in the extensive use of medical field.
Description
Technical field
The utility model relates to cryoablation technical field more particularly to a kind of cold-therapy devices.
Background technique
With the fast development of cryoablation technology, the minimally invasive ablation such as cryoablation, RF ablation, microwave, laser
Technology is widely used in oncotherapy.
The freeze melting device to have come out at present is after being mixed different refrigerant gas, further according to gas
The principle of throttling realizes cryogenic freezing.
Theoretically according to the difference of refrigerant, the control of cooling capacity may be implemented in above-mentioned freeze melting device.But in reality
In the process, there are media to obtain difficulty, the safety that medium safety in utilization, high pressure gas use, huge structure complexity, is not easy
The problems such as uniformity of operation and control and different refrigerant gas mixing, cause the device be very unstable to realize it is cold
Amount output is controllable.
Utility model content
In view of above-mentioned analysis, the utility model is intended to provide a kind of cold-therapy device, controls to solve existing freezing
It treats apparatus structure bulky complex, not easy to operate and control, can not steadily control the problem of cooling capacity output.
The purpose of this utility model is mainly achieved through the following technical solutions:
A kind of cold-therapy device, including gas source, cryogen vessel, heat-exchange device and conduit；
Heat-exchange device includes connecting tube and heat exchanger, and the quantity of heat exchanger is multiple and is arranged in parallel, heat exchange
Device is arranged in cryogen vessel and is connect by connecting tube with gas source；Cryogen vessel is externally provided with insulating layer；
Conduit includes tube body and effectively freezing region, tube body are interior equipped with air inlet pipe and muffler；Air inlet pipe will be by refrigeration
The gas of agent container is delivered to effectively freezing region, circuit of the muffler as refrigerant.
On the basis of above scheme, the utility model has also done following improvement:
Further, heat exchanger has different surface areas.
Further, cold-therapy device further includes controller and regulating valve, the quantity of regulating valve be it is multiple, controller is used for
The opening and closing of valve is controlled to adjust, regulating valve and heat exchanger correspond.
Further, cold-therapy device further includes the pressure controller being electrically connected with the controller, and controller is set according to predetermined
Automatic pressure control controller is set, and then adjusts the gas pressure of gas source output.
Further, effectively freezing region is equipped with temperature sensor.
Further, connecting tube, air inlet pipe and muffler include inner and outer tubes, between inner and outer tubes for vacuum chamber or
Heat-barrier material.
Further, cryogen vessel is equipped with fluid infusion.
Further, the shape of heat exchanger is helical form or folded bent shape.
Further, air inlet pipe and/or muffler are equipped with temperature sensor.
Further, heat exchanger is provided separately with connecting tube.
The utility model has the beneficial effect that:
(1) cold-therapy device of the utility model is provided with the different heat exchanger of multiple surface areas, and multiple heat
Exchanger is arranged in parallel, and by the control of the heat exchanger to different surfaces product, the control exported to cooling capacity, control may be implemented
Mode is simple and accuracy is high；
(2) various cryogenic temperature demands be can adapt to, in the case where the output pressure of gas source is constant, if to realize depth
Degree freezing, then make multiple heat exchangers in running order, so that the working gas temperature after over-heat-exchanger is low；Such as
Fruit will realize shallow freezing, then make one or a few heat exchanger it is in running order so that after over-heat-exchanger
Working gas temperature it is high.The cryoablation treatment had both been able to achieve for requiring freezing range wide, freezed the lesion of depth depth
Cryoablation, and can be realized for requiring freezing range small, freeze the cryoablation of the lesion of depth as shallow；
(3) temperature regulating range is wide, and use scope is wide, adaptable；
(4) device volume is small, at low cost, and structure is simple, easy to operate and realize.
It in the utility model, can also be combined with each other between above-mentioned each technical solution, to realize more preferably combination sides
Case.Other feature and advantage of the utility model will illustrate in the following description, also, certain advantages can be from specification
It becomes apparent, or is understood and implementing the utility model.The purpose of this utility model and other advantages can pass through
It is achieved and obtained in specifically noted content in bright book, claims and attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not considered as limitations of the present invention, entire
In attached drawing, identical reference symbol indicates identical component.
Fig. 1 is the structural schematic diagram of the cold-therapy device embodiment of the utility model；
Fig. 2 is that the cold-therapy device embodiment heat exchanger of the utility model is the structural representation of folded bent shape
Figure；
Fig. 3 is that the cold-therapy device embodiment heat exchanger of the utility model is spiral helicine structural schematic diagram；
Fig. 4 is that the structural representation of temperature sensor is arranged in the cold-therapy device embodiment of the utility model in air inlet pipe
Figure；
Fig. 5 is that the structural representation of temperature sensor is arranged in the cold-therapy device embodiment of the utility model on muffler
Figure；
Fig. 6 is the cross-sectional view of the cold-therapy device embodiment connecting tube of the utility model.
Appended drawing reference:
1- gas source；2- cryogen vessel；3- heat-exchange device；31- connecting tube；32- regulating valve；33- heat exchanger；4- control
Device processed；5- conduit；51- tube body；52- effectively freezes region；511- air inlet pipe；512- muffler；6- pressure controller；7- is heat-insulated
Component；8- vacuum heat-insulating pipe；9- temperature sensor；10- outer tube；11- inner tube.
Specific embodiment
Specifically describe the preferred embodiment of the utility model with reference to the accompanying drawing, wherein attached drawing constitutes the application one
Point, and be used to illustrate the principles of the present invention together with the embodiments of the present invention, it is not intended to limit the utility model
Range.
Embodiment one
Present embodiment discloses a kind of cold-therapy devices, as shown in Figure 1, the device include gas source 1, cryogen vessel 2,
Heat-exchange device 3 and conduit 5.
Heat-exchange device 3 includes connecting tube 31 and heat exchanger 33；The quantity of heat exchanger 33 be it is multiple and be arranged in parallel,
Heat exchanger 33 is arranged in cryogen vessel 2 and is connect by connecting tube 31 with gas source 1；Cryogen vessel 2 is externally provided with heat preservation
Layer.
Conduit 5 includes tube body 51 and effectively freezes region 52, is equipped with air inlet pipe 511 and muffler 512 in tube body 51；Air inlet
Pipe 511 will be delivered to effectively freezing region 52 by the gas of cryogen vessel 2.
When implementation, the pressure that gas source 1 exports is constant, provides working gas at room temperature, fills liquid in cryogen vessel 2
Refrigerant, gas enter heat exchanger 33 after connecting tube 31, become cold working gas by the gas after cold and hot exchange,
Effectively freezing region 52 is reached by the air inlet pipeline 511 of conduit 5, the fitting pathological tissues of region 52 is effectively freezed and is freezed,
Then gas is discharged along muffler 512.
Compared with prior art, cold-therapy device provided in this embodiment has the beneficial effect that:
(1) cold-therapy device of the utility model is provided with the different heat exchanger of multiple surface areas, and multiple heat
Exchanger is arranged in parallel, and by the control of the heat exchanger to different surfaces product, the control exported to cooling capacity, control may be implemented
Mode is simple and accuracy is high；
(2) various cryogenic temperature demands be can adapt to, in the case where the output pressure of gas source is constant, if to realize depth
Degree freezing, then make multiple heat exchangers in running order, so that the working gas temperature after over-heat-exchanger is low；Such as
Fruit will realize shallow freezing, then make one or a few heat exchanger it is in running order so that after over-heat-exchanger
Working gas temperature it is high.Cold-therapy device provided in this embodiment had both been able to achieve for requiring freezing range wide, and freezing is deep
The cryoablation of deep lesion is spent, and can be realized for requiring freezing range small, the cryoablation of the lesion of depth as shallow is freezed；
(3) temperature regulating range is wide, and use scope is wide, adaptable；
(4) device volume is small, at low cost, and structure is simple, easy to operate and realize.
Embodiment two
In running order in order to more easily adjust which heat exchanger, which further includes controller
4 and regulating valve 32, regulating valve 32 and heat exchanger 33 correspond, and unlatching or the pass of valve 32 are controlled to adjust by controller 4
It closes, so that heat exchanger 33 can be one or more while in running order, to obtain the duty of different temperatures
Refrigerant temperature.If finding that the temperature of work refrigerant needs to adjust in use, by adjusting each heat exchange
The corresponding regulating valve of device opens or closes, and can achieve the purpose that work refrigerant temperature is raised and lowered.Specifically, originally
Embodiment, which is set, is correspondingly equipped with regulating valve on the corresponding tributary circuit of each heat exchanger there are three heat exchanger.
In order to more accurately control the temperature of work refrigerant, and in order to obtain the broader work gas of temperature range
The surface area of body, three heat exchangers of the present embodiment is different.Before freezing starts, freezed according to required for lesion deep
Degree, cryogenic temperature, determine which heat exchanger 33 is in running order.It is carried out if necessary to the temperature to work refrigerant thick
It adjusts, then opening or closing regulating valve corresponding on the tributary circuit of the biggish heat exchanger of surface area i.e. by controller 4
It can；It is finely adjusted if necessary to the temperature to work refrigerant, then opening or closing the lesser heat of surface area by controller 4
Corresponding regulating valve on the tributary circuit of exchanger.By above-mentioned design, the temperature of work refrigerant can be accurately controlled
Degree, and the broader working gas of temperature range can be obtained, to meet the needs of different freezing depth.
It is worth noting that, heat exchanger can be designed to different shapes, so as to be suitable for different refrigerants
Liquid level.Specifically, heat exchanger can be set to the pipeline of specific shape, such as helical form or folded bent shape, such as Fig. 2
With shown in Fig. 3.It is convenient, simple that folded bent shape heat exchanger is realized.The height of such structure heat exchanger of same surface area is low,
It is of less demanding to the liquid level of liquid refrigerant, it is easy to use.And cylindric heat converter structure is compact, it is easy to assembly.
Embodiment three
In order to more acurrate, more intuitively reaction cold-therapy device output temperature, the present embodiment is effectively being freezed
Region is equipped with temperature sensor 9, can adjust heat exchanger quantity, gas in real time according to the Real-time Feedback of temperature sensor 9
Size is pressed, so that whole device be made to be in controllable state.
In order to reduce influence of the heat exchanger to cold-therapy device output temperature, embodiment adds pressure controllers
6, pressure controller 6 is electrically connected with controller 4, and controller 4 is according to predetermined set automatic pressure control controller 6, pressure control
Device 6 is connected with gas source 1, for adjusting the pressure of the output of gas source 1.On the one hand, it because air pressure can accurately control very much, utilizes
Pressure control is combined with heat exchanger control, and the output of cooling capacity can be precisely controlled in certain temperature section, thus
More it is accurately controlled temperature；On the other hand, combine pressure control and heat exchange area control, it is possible to reduce to heat exchange
The dependence of device, and the quantity of heat exchanger is reduced, keep cooling capacity output control more convenient, it is easier to realize, while adjust freedom
Degree is bigger, and range intervals are wider.
Example IV
It, can also be in air inlet pipe and/or muffler in order to know the output temperature of cold-therapy device more in time
Upper setting temperature sensor, so as to adjusted more in time according to the Real-time Feedback of temperature sensor heat exchanger quantity,
Air pressure size controls more accurate.
It is worth noting that, the practical specific value of the temperature sensor of above-mentioned two position is different, but there is corresponding patrol
The relationship of collecting, can reflect the state of cold-therapy device.
In view of the progress with cold and hot exchange, the refrigerant in cryogen vessel can be gradually decreased, and influence control effect,
So the cryogen vessel of the present embodiment is equipped with fluid infusion, thus can be from fluid infusion in the case where refrigerant is lower than requirement
Fill into refrigerant.
Embodiment five
In the cold-therapy device of the present embodiment, working gas initial pressure set is the first operating pressure, through excess pressure
Pressure after controller 6 is adjusted is set as the second operating pressure.In the present embodiment, there are operating pressure and heat exchange area two can
Regulated variable is controlled, operating pressure and heat exchange area act synergistically to reach the function of control cooling capacity output in certain temperature section
Energy.
When if necessary to cryoablation shallow-layer lesion, lesser heat exchange area is generally selected, because of lesser heat-exchange surface
For product so that working gas is not enough with refrigerant heat exchange, the temperature of refrigeration system output is all higher, is suitble to freezing to disappear at this time
The lesion for melting shallow-layer, when selecting lesser heat exchange area, the second operating pressure needs to be higher than the first operating pressure at this time, this
When higher operating pressure quickly through heat exchange area, working gas and refrigerant heat exchange are few, and high pressure working gas is taken
Band cooling capacity is few, and the temperature of output is high.
When if necessary to cryoablation deep layer lesion, it is typically chosen biggish heat exchange area and carries out cryoablation.Because
Biggish heat exchange area makes the heat exchange of working gas and refrigerant more abundant, and the temperature of output is lower, and suitable freezing disappears
Melt deep layer lesion.When selecting biggish heat exchange area, working gas and refrigerant heat exchange are more abundant, the cooling capacity of output
More, deep layer lesion cryoablation may be implemented in the working gas of smaller pressure, and the second operating pressure at this time is needed lower than first
Operating pressure, meanwhile, working gas can be saved, working gas consumption is reduced.
By taking gas source is nitrogen, refrigerant is liquid nitrogen as an example, when heat exchange area is less than or equal to 55cm2When, effectively freeze
The temperature in region is minimum to be only -100 DEG C, therefore, if cryogenic temperature has to be lower than -100 DEG C (deep layer cryoablation), needs
Heat exchange area is selected to be greater than 55cm2Heat exchanger；When heat exchange area is less than or equal to 55cm2When, it is defeated to improve freezing
Temperature out then needs the second operating pressure to be greater than the first operating pressure, and the second operating pressure is specially 4.5~7.0MPa；When
Heat exchange area is 55~500cm2When, working gas is more abundant with refrigerant heat exchange in heat exchanger, and output cooling capacity is more,
Deep layer lesion cryoablation may be implemented in the working gas of smaller pressure, while saving the dosage of gas, then needs the second work
Pressure is specifically less than less than the first operating pressure, the second operating pressure equal to 2.0MPa.When heat exchange area is greater than 500cm2
When, the cryoablation treatment system output temperature of the present embodiment is constant.The present embodiment is only liquid nitrogen by nitrogen, refrigerant of gas source
For, provide referential data.If adjusting gas source or refrigerant in, referential data can be adjusted by testing.
Embodiment six
Since intake manifold temperature is lower than muffler, in order to reduce influence of the relatively high temperature of muffler to air inlet pipe,
It is arranged heat insulating member 7 outside air inlet pipe, reduces the heat exchange of itself and muffler and environment, drops to the loss of refrigeration capacity of air inlet pipe most
It is low, to improve the utilization rate of cooling capacity.
Simultaneously, it is contemplated that the refrigerant between liquid level on heat exchanger and refrigerant can enter hot friendship in working gas
Just carried out with working gas before parallel operation it is cold and hot exchange, i.e., it is cold and hot to exchange the contact surface for not only occurring on heat exchanger and refrigerant
At product, and also there is cold and hot exchange except contact of the heat exchanger with refrigerant, the cold and hot friendship to heat exchanger and refrigerant
Tape swapping interferes, so that it is inaccurate to the control of heat-exchanger surface product, and then influence the control exported to temperature.Therefore,
The present embodiment is also arranged heat insulating member 7 outside the connecting tube for being located at heat exchanger or more, on the one hand, can effectively reduce refrigerant
Influence to tributary circuit temperature occurs that cold and hot exchange only at heat exchanger；On the other hand, to refrigerant liquid level
It is required that reducing, so that the installation site of heat exchanger is freer, using more convenient.
In order to further decrease working gas in pipe with it is extraneous it is cold and hot exchange, heat insulating member is also arranged outside muffler.
Illustratively, heat insulating member can be vacuum heat-insulating pipe 8 or insulating layer.
In addition to this, it is exchanged to reduce the relatively low working gas of temperature in pipe with the cold and hot of external environment, in addition to
It is arranged other than heat insulating member outside pipe, connecting tube, air inlet pipe and muffler can also be designed as to the structure (heat exchange of bimetallic tube
Except pipeline at device), that is, it include inner and outer tubes, gas flows in inner tube, is vacuum chamber between inner and outer tubes, sufficiently
Vacuum heat preservation and insulation.It can also filling with insulation material between the inner and outer pipe sections.
It is worth noting that, the heat exchanger in the present embodiment can be integrally formed with connecting tube, or heat exchange
It is connect after device is separately formed with connecting tube.In order to guarantee that heat exchanger has good heat transfer effect, by the pipe at heat exchanger
Line selection is selected as metal material, meanwhile, in order to which pipeline is exchanged with the cold and hot of external environment at the rest of reducing, and by heat exchanger
Pipeline other than place's pipeline is selected as the bad material of heat-conducting effect, such as plastics.
It being exchanged to reduce refrigerant with the cold and hot of external environment, the cryogen vessel of the present embodiment has heat insulation function,
One or more layers insulating layer can be set outside cryogen vessel, cryogen vessel can also be designed to the structure of insulation barrel.
Meanwhile being exchanged to be further reduced refrigerant with the cold and hot of external environment, the loss of cooling capacity is reduced, in connecting tube
Seal member is set with the junction of cryogen vessel, can be sealing strip or sealing ring.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.
Claims (10)
1. a kind of cold-therapy device, which is characterized in that including gas source, cryogen vessel, heat-exchange device and conduit；
The heat-exchange device includes connecting tube and heat exchanger, and the quantity of the heat exchanger is multiple and is arranged in parallel, institute
Heat exchanger is stated to be arranged in the cryogen vessel and connect by the connecting tube with the gas source；The cryogen vessel
It is externally provided with insulating layer；
The conduit includes tube body and effectively freezing region, the tube body are interior equipped with air inlet pipe and muffler；The air inlet pipe will
Effective freezing region, circuit of the muffler as refrigerant are delivered to by the gas of the cryogen vessel.
2. cold-therapy device according to claim 1, which is characterized in that the heat exchanger has different surfaces
Product.
3. cold-therapy device according to claim 1, which is characterized in that the cold-therapy device further includes controller
And regulating valve, the quantity of the regulating valve be it is multiple, the controller is used to control the opening and closing of the regulating valve, the regulating valve
It is corresponded with the heat exchanger.
4. cold-therapy device according to claim 1, which is characterized in that the cold-therapy device further include with it is described
The pressure controller of controller electrical connection, the controller adjust gas according to predetermined set automatic pressure control controller
The gas pressure of source output.
5. cold-therapy device according to claim 1, which is characterized in that effective freezing region is equipped with temperature sensing
Device.
6. cold-therapy device according to claim 1, which is characterized in that the connecting tube, the air inlet pipe and described
Muffler includes inner and outer tubes, is vacuum chamber or heat-barrier material between said inner tube and outer tube.
7. cold-therapy device according to claim 1, which is characterized in that the cryogen vessel is equipped with fluid infusion.
8. cold-therapy device according to claim 1, which is characterized in that the shape of the heat exchanger be helical form or
Folded bent shape.
9. cold-therapy device according to claim 1, which is characterized in that the air inlet pipe and/or the muffler are set
There is temperature sensor.
10. -9 described in any item cold-therapy devices according to claim 1, which is characterized in that the heat exchanger with it is described
Connecting tube is provided separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338627.8U CN209236366U (en) | 2018-08-20 | 2018-08-20 | Cold-therapy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338627.8U CN209236366U (en) | 2018-08-20 | 2018-08-20 | Cold-therapy device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209236366U true CN209236366U (en) | 2019-08-13 |
Family
ID=67517093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821338627.8U Active CN209236366U (en) | 2018-08-20 | 2018-08-20 | Cold-therapy device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209236366U (en) |
-
2018
- 2018-08-20 CN CN201821338627.8U patent/CN209236366U/en active Active
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