CN209574861U - A kind of Cryoablation system - Google Patents
A kind of Cryoablation system Download PDFInfo
- Publication number
- CN209574861U CN209574861U CN201822110019.8U CN201822110019U CN209574861U CN 209574861 U CN209574861 U CN 209574861U CN 201822110019 U CN201822110019 U CN 201822110019U CN 209574861 U CN209574861 U CN 209574861U
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- Prior art keywords
- ablation needle
- motor
- storage tank
- cryoablation system
- liquid nitrogen
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 41
- 238000002679 ablation Methods 0.000 claims abstract description 35
- 238000003860 storage Methods 0.000 claims abstract description 31
- 239000002826 coolant Substances 0.000 claims abstract description 27
- 239000003507 refrigerant Substances 0.000 claims abstract description 25
- 238000010992 reflux Methods 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims 1
- 238000007710 freezing Methods 0.000 abstract description 7
- 230000008014 freezing Effects 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000004907 flux Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 210000004881 tumor cell Anatomy 0.000 description 1
Landscapes
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
The utility model discloses a kind of Cryoablation system, including ablation needle, coolant storage tank, liquid nitrogen pump and influent stream pipe；Liquid nitrogen pump is set in coolant storage tank, specifically includes the motor of pump ontology and transfer tube ontology, motor is superconducting motor and revolving speed is adjustable；Influent stream pipe one end is connected to the outflow port of pump ontology, and the other end is connected to the inner cavity of ablation needle.The Cryoablation system has achieved the purpose that increasing refrigerant conveys pressure by increasing motor speed, when refrigerant conveys pressure increase, it will not influence the pressure inside coolant storage tank, therefore compared to it is simple by from pressurized tanks come for increasing refrigerant conveying pressure, the requirement of voltage endurance capability and security performance to coolant storage tank wants much lower, accordingly, cost and risk are also much lower, and, since motor is superconducting motor, it is nearly free from Joule heat when being immersed in operation in refrigerant, therefore not will cause the loss of refrigerant cooling capacity.Further, it is also possible to the components such as return pipe, air exhauster be arranged, with the freezing performance of lifting system.
Description
Technical field
The utility model relates to cryoablation technical fields, more particularly to a kind of Cryoablation system.
Background technique
In recent years, it is quickly grown, principle is: being utilized cold using the oncotherapy technology that low temperature refrigerant carries out cryoablation
Matchmaker's cooling capacity makes surrounding tissue rapid drop in temperature, achievees the purpose that extinction tumour cell with this.In surgical procedure, usually utilize
Refrigerant is supplied to ablation needle from pressurized tanks, refrigerant flow to the syringe needle of ablation needle, absorbs heat and vaporizes in needle position, to surrounding group
Knit generation freezing effect.
During cryoablation, due to rapid spatial expansion after refrigerant heat absorption vaporization, in addition, the return flow line of ablation needle is narrow
It is narrow, it causes reflux resistance to increase, causes refrigerant flow rate to reduce, freezing performance decline, it is therefore desirable to increase from pressurization coolant storage tank
Internal pressure maintains or improves refrigerant flow rate, is required with meeting operation.
But after pressure increases, it is entire from pressurization coolant storage tank all under high pressure conditions, to from pressurization coolant storage tank
More stringent requirements are proposed for voltage endurance capability and security performance, this can undoubtedly improve a whole set of Cryoablation system cost, increase it is whole
Cover the operational danger of Cryoablation system.
In view of this, develop a kind of Cryoablation system, make its low cost, highly-safe and can satisfy refrigerant storage
It is required with conveying, is those skilled in the art's technical issues that need to address.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of Cryoablation system, the Cryoablation system packet
Ablation needle and the supply unit to ablation needle supply refrigerant are included, the supply unit includes coolant storage tank, liquid nitrogen pump and influent stream pipe；
The liquid nitrogen pump is placed in the coolant storage tank, is specifically included pump ontology and is driven the motor of the pump ontology, the motor is
Superconducting motor and revolving speed is adjustable；Influent stream pipe one end is connected to the outflow port of the pump ontology, the other end and the ablation needle
Inner cavity connection.
By taking liquid nitrogen as an example, illustrate the application process of the Cryoablation system:
Liquid nitrogen is packed into coolant storage tank and is immersed in liquid nitrogen pump in liquid nitrogen, under the pump action of liquid nitrogen pump, liquid nitrogen
The inner cavity of ablation needle is flowed into through influent stream pipe.In refrigerating process, by the revolving speed of increase motor, increase the conveying pressure of liquid nitrogen,
To overcome the reflux resistance of increase, liquid nitrogen flow velocity is made to maintain to stablize.
As it can be seen that the Cryoablation system has achieved the purpose that increasing liquid nitrogen conveys pressure, liquid nitrogen by increasing motor speed
When conveying pressure increase, the pressure inside coolant storage tank will not influence, therefore, increase liquid compared to simple rely on from pressurized tanks
For nitrogen conveys pressure, the requirement of voltage endurance capability and security performance to coolant storage tank wants much lower, correspondingly, cost and danger
Property is also much lower.
Moreover, because motor is superconducting motor, it is nearly free from Joule heat when being immersed in operation in liquid nitrogen, it therefore, will not
Cause the loss of liquid nitrogen cooling capacity.
Cryoablation system as described above, the ablation needle is provided with the flow inlet passed through for the influent stream pipe, described
The backshank end wall of the ablation needle is arranged in flow inlet.
Cryoablation system as described above, the supply unit further include return pipe, one end of the return pipe with it is described
The inner cavity of ablation needle is connected to, and the other end is communicated with the atmosphere or is connected to recovery part.
Cryoablation system as described above, the ablation needle is provided with the refluxing opening passed through for the return pipe, described
The backshank peripheral wall of the ablation needle is arranged in refluxing opening.
Cryoablation system as described above is connected with air exhauster on the return pipe.
Cryoablation system as described above is also connected with regulating valve on the return pipe, for adjusting the return pipe
Circulation area.
The Cryoablation system integrally has the following technical effect that
(1) by setting liquid nitrogen pump, the requirement to the pressure-resistant performance, security performance of coolant storage tank is reduced, therefore is reduced
The cost of Cryoablation system, the safety for improving Cryoablation system.
(2) by setting air exhauster, the temperature for reducing reflux resistance, reducing refrigerant itself improves cryoablation
The freezing performance of system.
(3) by setting regulating valve, Cryoablation system is made to can satisfy the operations of different parts to cold medium flux not
Same demand improves the applicability of Cryoablation system.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of specific embodiment of Cryoablation system provided by the utility model.
The reference numerals are as follows in Fig. 1:
1 ablation needle；
2 supply units, 21 coolant storage tanks, 22 liquid nitrogen pumps, 221 pump ontologies, 222 motors, 23 influent stream pipes, 24 return pipes, 25 take out
Mechanism of qi, 26 regulating valves.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing
The technical solution of the utility model is described in further detail with specific embodiment.
Referring to FIG. 1, Fig. 1 is a kind of schematic diagram of specific embodiment of Cryoablation system provided by the utility model.
The Cryoablation system includes ablation needle 1 and supplies the supply unit of refrigerant to ablation needle 1.
Specifically, refrigerant can be liquid nitrogen, or other cryogenic liquids easily vaporized.
Specifically, supply unit 2 includes coolant storage tank 21, liquid nitrogen pump 22 and influent stream pipe 23.
Wherein, liquid nitrogen pump 22 is located in coolant storage tank 21, specifically includes the motor of pump ontology 221 and transfer tube ontology 221
222, which is superconducting motor and revolving speed is adjustable, specifically, motor 222 and the controller being located at outside coolant storage tank 21
(being not drawn into figure) is electrically connected, and in actual use, the revolving speed of motor 222 can be adjusted by adjusting controller, thus adjustable
Save the discharge pressure of liquid nitrogen.Wherein, one end of influent stream pipe 23 is connected with the outflow port of liquid nitrogen pump 22, the other end and ablation needle 1
Inner cavity connection, in a particular embodiment, ablation needle 1 are provided with the flow inlet passed through for influent stream pipe 23, and flow inlet setting is being melted
On the backshank end wall of needle 1, influent stream pipe 23 passes through flow inlet and reaches near the syringe needle of ablation needle 1, so set, being conducive to the confession of refrigerant
It answers.It should be appreciated that backshank and syringe needle are two opposite ends of ablation needle 1.
By taking liquid nitrogen as an example, illustrate the application process of the Cryoablation system:
Liquid nitrogen is packed into coolant storage tank 21 and is immersed in liquid nitrogen pump 22 in liquid nitrogen, in the pump action of liquid nitrogen pump 22
Under, liquid nitrogen flows into the inner cavity of ablation needle 1 through influent stream pipe 23.In surgical procedure, by increasing the revolving speed of motor 222, make liquid nitrogen
It conveys pressure to increase, to overcome the reflux resistance being gradually increased, liquid nitrogen flow velocity is made to maintain to stablize.
As it can be seen that the Cryoablation system has achieved the purpose that increasing liquid nitrogen conveys pressure, liquid nitrogen by increasing motor speed
When conveying pressure increase, the pressure inside coolant storage tank 21 will not influence, therefore, increase compared to simple rely on from pressurized tanks
Liquid nitrogen convey pressure for, the requirement of voltage endurance capability and security performance to coolant storage tank 21 wants much lower, correspondingly, cost and
Risk is also much lower.
Moreover, because motor 222 is superconducting motor 222, it is nearly free from Joule heat when being immersed in operation in liquid nitrogen, because
This, not will cause the loss of liquid nitrogen cooling capacity.
It should be noted that coolant storage tank 21 can be for without the common tank from function of increasing pressure, or from increasing
Press storage tank.When being set as from pressurized tanks, in application process, can adjust by a small margin from the pressure inside pressurized tanks,
It rises or falls refrigerant delivery pressure strong production by a small margin, at this moment, is only adjusted from the adjusting of pressurized tanks as a kind of supplement
Means, motor adjusting is still main regulating measure.
In addition, it is necessary to explanation, in order to guarantee the cleaning of refrigerant, coolant storage tank 21 is preferably designed for closed storage tank.If
When being calculated as closed storage tank, in order to guarantee not generate negative pressure in coolant storage tank 21, need reasonable disposition coolant storage tank 21 volume and
The maximum speed of motor 222.
Specifically, the supply unit 2 further includes return pipe 24, one end of return pipe 24 is connected to the inner cavity of ablation needle 1, another
End is communicated with the atmosphere or is connected to recovery part, and the liquid nitrogen in 1 inner cavity of ablation needle by vaporization after heat exchange is through return pipe
24 discharges.
In a particular embodiment, ablation needle 1 is provided with the refluxing opening passed through for return pipe 24, and refluxing opening is arranged in ablation needle
1 backshank peripheral wall, return pipe 24 pass through refluxing opening and reach near the syringe needle of ablation needle 1, so set, being conducive to the reflux of refrigerant.
Specifically, the supply unit 2 can also include air exhauster 25, air exhauster 25 is connected on return pipe 24.
In fact, when refrigerant conveying pressure improve to a certain degree when, due to reflux resistance increase it is too fast, be further continued for improving
It is not significant to the promotion of freezing performance that refrigerant conveys pressure, and by setting air exhauster 25, reflux resistance can be reduced, thus
Make up this deficiency.
Moreover, by setting air exhauster 25 pressure of return pipe 24 can be reduced, to reduce the temperature of refrigerant itself
Degree, also improves freezing performance for this angle.
Specifically, the supply unit 2 can also include regulating valve 26, for adjusting the circulation area of return pipe 24, to meet
Different demands of the operation of different parts to cold medium flux.For example, regulating valve 26 can be increased when the cold medium flux of demand is larger
Aperture, when smaller, can reduce the aperture of regulating valve 26.
In conclusion the Cryoablation system has the following technical effect that
(1) by setting liquid nitrogen pump, the requirement to the pressure-resistant performance, security performance of coolant storage tank is reduced, therefore is reduced
The cost of Cryoablation system, the safety for improving Cryoablation system.
(2) by setting air exhauster, the temperature for reducing reflux resistance, reducing refrigerant itself improves cryoablation
The freezing performance of system.
(3) by setting regulating valve, Cryoablation system is made to can satisfy the operations of different parts to cold medium flux not
Same demand improves the applicability of Cryoablation system.
A kind of Cryoablation system provided by the utility model is described in detail above.Tool used herein
Body example is expounded the principles of the present invention and embodiment, and the above embodiments are only used to help understand
The method and its core concept of the utility model.It should be pointed out that for those skilled in the art, not taking off
Under the premise of from the utility model principle, several improvements and modifications can be made to this utility model, these improvement and modification
It also falls into the protection scope of the utility model claims.
Claims (6)
1. a kind of Cryoablation system, which is characterized in that the Cryoablation system includes ablation needle (1) and to the ablation needle
(1) supply unit (2) of refrigerant is supplied, the supply unit (2) includes coolant storage tank (21), liquid nitrogen pump (22) and influent stream pipe (23)；
The liquid nitrogen pump (22) is placed in the coolant storage tank (21), specifically includes pump ontology (221) and the driving pump ontology (221)
Motor (222), the motor (222) be superconducting motor and revolving speed it is adjustable；Described influent stream pipe (23) one end is connected to the pump
The outflow port of ontology (221), the other end are connected to the inner cavity of the ablation needle (1).
2. Cryoablation system according to claim 1, which is characterized in that the ablation needle (1) be provided with for it is described into
The flow inlet that flow tube (23) passes through, backshank end wall of the flow inlet setting in the ablation needle (1).
3. Cryoablation system according to claim 1 or 2, which is characterized in that the supply unit (2) further includes return pipe
(24), one end of the return pipe (24) is connected to the inner cavity of the ablation needle (1), the other end be communicated with the atmosphere or with recycling
Members.
4. Cryoablation system according to claim 3, which is characterized in that the ablation needle (1) is provided with for the reflux
The refluxing opening that pipe (24) passes through, backshank peripheral wall of the refluxing opening setting in the ablation needle (1).
5. Cryoablation system according to claim 3, which is characterized in that be connected with air exhauster on the return pipe (24)
(25)。
6. Cryoablation system according to claim 5, which is characterized in that be also connected with adjusting on the return pipe (24)
Valve (26), for adjusting the circulation area of the return pipe (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822110019.8U CN209574861U (en) | 2018-12-14 | 2018-12-14 | A kind of Cryoablation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822110019.8U CN209574861U (en) | 2018-12-14 | 2018-12-14 | A kind of Cryoablation system |
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| Publication Number | Publication Date |
|---|---|
| CN209574861U true CN209574861U (en) | 2019-11-05 |
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| CN201822110019.8U Active CN209574861U (en) | 2018-12-14 | 2018-12-14 | A kind of Cryoablation system |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110934635A (en) * | 2019-12-04 | 2020-03-31 | 海杰亚（北京）医疗器械有限公司 | High-low temperature composite ablation operation system |
| CN114176756A (en) * | 2021-03-04 | 2022-03-15 | 海杰亚（北京）医疗器械有限公司 | Low-temperature cryotherapy device and control method thereof |
| CN114176756B (en) * | 2021-03-04 | 2024-09-10 | 海杰亚（北京）医疗器械有限公司 | Cryogenic treatment device and control method thereof |
-
2018
- 2018-12-14 CN CN201822110019.8U patent/CN209574861U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110934635A (en) * | 2019-12-04 | 2020-03-31 | 海杰亚（北京）医疗器械有限公司 | High-low temperature composite ablation operation system |
| CN114176756A (en) * | 2021-03-04 | 2022-03-15 | 海杰亚（北京）医疗器械有限公司 | Low-temperature cryotherapy device and control method thereof |
| CN114176756B (en) * | 2021-03-04 | 2024-09-10 | 海杰亚（北京）医疗器械有限公司 | Cryogenic treatment device and control method thereof |
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