CN204618397U - A kind of cryotherapy probe - Google Patents
A kind of cryotherapy probe Download PDFInfo
- Publication number
- CN204618397U CN204618397U CN201520218208.0U CN201520218208U CN204618397U CN 204618397 U CN204618397 U CN 204618397U CN 201520218208 U CN201520218208 U CN 201520218208U CN 204618397 U CN204618397 U CN 204618397U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- handle
- probe
- exhaustor
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses a kind of cryotherapy probe, belong to technical field of medical instruments.Described cryoprobe comprises probe bodies, handle, snorkel, the first heat exchanger, exhaustor, the second heat exchanger and the 3rd heat exchanger; First heat exchanger is arranged on the taper inner of probe bodies; Second heat exchanger is arranged on exhaustor inside; 3rd heat exchanger is arranged on handle inner; Probe bodies extend into handle inner, and is communicated with one end of handle; The other end of handle is communicated with exhaustor; Second heat exchanger, the 3rd heat exchanger and the first heat exchanger are cascaded by snorkel; The port of export of the first heat exchanger is provided with throttle orifice.This utility model can carry out pre-cooling to the high normal pressure and temperature argon newly entered by efficient recovery cold, improves rate of temperature fall, reaches lower cryogenic temperature, increase the volume of ice hockey simultaneously, improves procedure efficiency, reduces operation cost.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly a kind of cryotherapy probe.
Background technology
Argon helium knife cryosurgery system is the armarium of a kind of Wicresoft cryotherapy ablated tumor, primarily of main frame, cryoprobe (cryoprobe), high-pressure air source and corresponding accessory structure composition, have the multiple therapeutic effects such as cryotherapy, insertion thermotherapy, immunostimulant concurrently.It is emphasized Wicresoft, targeting and wipes out tumor, accurately can locate and accurately destroys cancerous tissue and protect normal structure to greatest extent, provides effective Therapeutic Method for killing rapidly tumor and eliminating tumor load.Wherein, cryoprobe is the stainless pin of a hollow, probe interior high normal pressure and temperature argon capable of circulation (for refrigeration) or high normal pressure and temperature helium (for heating).High pressure argon gas can obtain refrigeration (Joule-Thomson effect) in the inner rapid expansion of point of a knife, and in tens seconds, freezing pathological tissues is to less than-100 DEG C.High-pressure helium can heat in the inner rapid expansion of point of a knife, and Fast Heating is in the pathological tissues of icing condition, makes its cell rupture, reaches the object of rapid inactivation.
The CRYOCARE system that ENDOCARE company of the U.S. produces discloses a kind of cryoprobe, and the primary structure of this cryoprobe comprises metal shell 4, heat exchanger 3, vacuum heat-insulating layer 5, thermocouple 7 and throttle orifice 2 etc., as shown in Figure 1.Metal shell 4 is positioned at probe bodies outside, and heat exchanger 3 is positioned at that probe bodies most advanced and sophisticated 1 is inner, and one section of vacuum heat-insulating layer 5 is installed in heat exchanger 3 rear end, and thermocouple 7 stretches into probe bodies tip 1, can the temperature at monitoring probe body tip 1 continuously.High pressure argon gas enters probe interior by snorkel 11, the throttle orifice 2 of heat exchanger front end is arrived through over-heat-exchanger 3 inside, low-pressure low-temperature gas after throttling carries out pre-cooling through over-heat-exchanger 3 outside to the argon that heat exchange inside newly flows into, thus form the process of positive feedback, low-pressure argon flows out from the path 6 between snorkel 11 outside and vacuum heat-insulating layer 5 inside, then discharges from the PVC exhaust hose 10 of probe tails.As seen from Figure 1, because the limited space at probe bodies tip 1 (probe diameter is generally at about 3mm), so the volume of heat exchanger 3 is restricted, cause heat exchanger effectiveness lower.In actual application, handle casing 9 and PVC exhaust hose 10 temperature of cryoprobe are very low, easily cause unexpected cold injury, and have frost to occur, this shows have a lot of cold to be released with the low-pressure argon of discharging, only some cold in the most advanced and sophisticated freezing region 8 of cryoprobe for refrigeration (acting), cryoprobe must be caused so lower to the utilization rate of the cold produced after high pressure argon gas throttling in refrigerating process, and the cryoprobe ice hockey volume formed is little, make freezing core temperature very not low, easily cause the freezing deactivation of target tumor not thorough, in addition, in order to obtain longer cooling time, reaching the object of target tumor deactivation, just needing the usage quantity consuming more argon and increase cryoprobe, to obtain the cryoprobe ice hockey of more volume, this will bring the increase on treatment cost to hospital and patient.
Utility model content
In order to the heat exchanger effectiveness solving existing medical cryoprobe is low, ice hockey volume is little, the problem such as handle casing and the easy frosting of exhaust hose, this utility model provides a kind of cryotherapy probe, comprises probe bodies, handle, snorkel, the first heat exchanger, exhaustor, the second heat exchanger and the 3rd heat exchanger; Described first heat exchanger is arranged on the taper inner of described probe bodies; It is inner that described second heat exchanger is arranged on described exhaustor; Described 3rd heat exchanger is arranged on described handle inner; Described probe bodies extend into described handle inner, and is communicated with one end of described handle; The other end of described handle is communicated with exhaustor; Described second heat exchanger, the 3rd heat exchanger and the first heat exchanger are cascaded by described snorkel; The port of export of described first heat exchanger is provided with throttle orifice.
Described cryotherapy probe also comprises thermocouple; Described thermocouple is arranged at the taper inner of described handle inner or probe bodies.
Described probe bodies inner surface is provided with vacuum heat-insulating layer.
Described first heat exchanger, the second heat exchanger and the 3rd heat exchanger are fin tube type heat exchanger.
Described handle is provided with the shell with heat-insulation layer; Described exhaustor is the PVC hose with heat-insulation layer.
Described handle is horizontal handle or fold angle type handle.
This utility model by placing heat exchanger respectively in probe tip, handle and in exhaustor, utilize the cold of the low pressure return argon discharged from throttle orifice, fully be cooled through the argon that snorkel newly enters, reduce the temperature newly entering argon, the temperature in freezing region is made to drop quickly to-150 DEG C of poised states that reach capacity, improve probe rate of temperature fall, increase ice hockey volume, reduce operation cost; Eliminate the phenomenon of handle and exhaust hose frosting in art.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of prior art cryoprobe;
Fig. 2 is the structural principle schematic diagram of the cryotherapy probe that this utility model embodiment provides;
Fig. 3 is the workflow schematic diagram of the cryotherapy probe that this utility model embodiment provides;
Fig. 4 is that the ice hockey shape that this utility model embodiment and existing cryoprobe are formed contrasts schematic diagram.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical solutions of the utility model are further described.
See Fig. 2, this utility model embodiment provides a kind of cryotherapy probe, comprises probe bodies 21, handle 22, snorkel 112, first heat exchanger 103, exhaustor 23, second heat exchanger 111, the 3rd heat exchanger 109 and thermocouple 113.Wherein, the first heat exchanger 103 is arranged on the inside, tip 101 of probe bodies 21; It is inner that second heat exchanger 111 is arranged on exhaustor 23; It is inner that 3rd heat exchanger 109 is arranged on handle 22; It is inner that probe bodies 21 extend into handle 22, and be communicated with one end of handle 22; The other end of handle 22 is communicated with exhaustor 23; Second heat exchanger 111, the 3rd heat exchanger 109 and the first heat exchanger 103 are cascaded by snorkel 112; The port of export of the first heat exchanger 103 is provided with throttle orifice 102 (Joule-Thomson hole).
In a particular application, the first heat exchanger 103, second heat exchanger 111 of this utility model embodiment and the 3rd heat exchanger 109 are fin tube type heat exchanger; The probe bodies inner surface of this utility model embodiment is provided with vacuum heat-insulating layer 105, for being incubated the low temperature argon of backflow, also ensures that probe bodies non-frozen region does not produce low temperature, stops the normal human tissue of freezing nontarget area simultaneously.In addition, the handle of this utility model embodiment is provided with the shell with heat-insulation layer, exhaustor is the PVC hose with heat-insulation layer, the material of heat-insulation layer can select ceramic fibre, aluminium foil, cold so not only can be prevented to be transmitted to outside and to produce unexpected cold injury, but also effectively can be incubated the low temperature argon of backflow, reduce cold waste.In order to the convenience used, handle design can be become horizontal handle or fold angle type handle.This utility model embodiment adopts fold angle type handle.
In freezing work, in order to realize the monitoring of freezing region 107 temperature at the tip to probe bodies, thermocouple 113 can be arranged at handle 22 tip 101 that is inner or probe bodies 21 inner.The temperature that the thermocouple at the tip of probe bodies records is freezing core actual temperature; The thermocouple of handle inner can reflect the temperature in freezing region indirectly, this is because the low-pressure low-temperature argon of backflow does not almost have temperature to rise after gas backstreaming path, contrast discovery by experiment, within higher than the actual temperature at the tip of probe bodies 1 DEG C of the freezing regional temperature that handle inner records.In actual applications, due to the taper inner narrow space of probe bodies, therefore thermocouple is arranged on handle inner usually.The thermocouple 113 of this utility model embodiment is arranged on handle 22 inside.But in the manufacture process of this utility model embodiment cryoprobe, also can not need to arrange thermocouple, and in freezing work, adopt other external measurement devices to monitor the temperature in freezing region.
Compared with prior art, the handle inner that this utility model embodiment is larger in inner space and exhaustor inside, the 3rd heat exchanger and the second heat exchanger that volume is greater than the first heat exchanger are set respectively, use the 3rd heat exchanger as principal heat exchange, first heat exchanger of smaller size smaller is as secondary unit, and the low-temp low-pressure argon of backflow is after exchanging through the two levels of thermal of the first heat exchanger and the 3rd heat exchanger, gas temperature rises, therefore the second heat exchanger is also as secondary unit.Three-stage heat exchanger through design like this can carry out pre-cooling to the high normal pressure and temperature argon newly entered by efficient recovery cold, improve rate of temperature fall, reach lower cryogenic temperature, increase the volume of freezing power and ice hockey simultaneously, improve procedure efficiency, reduce operation cost.
The using method of the cryotherapy probe that this utility model embodiment provides, comprise: high normal pressure and temperature argon enters the second heat exchanger of series connection, the 3rd heat exchanger and the first heat exchanger by snorkel and carries out heat exchange, high normal pressure and temperature argon after heat exchange ejects low-temp low-pressure argon by the throttle orifice of the port of export of the first heat exchanger to the tip of probe bodies, makes the tip of probe bodies form freezing region; Low-temp low-pressure argon carries out heat exchange by the argon in gas backstreaming path and the first heat exchanger, the 3rd heat exchanger and the second heat exchanger, and the low-temp low-pressure argon after heat exchange is discharged into air by exhaustor.
See Fig. 2 and Fig. 3, in concrete use procedure, high normal pressure and temperature argon enters from snorkel 112, after the second heat exchanger 111 heat exchange in exhaustor 23, the 3rd heat exchanger 109 entered in handle 22 carries out heat exchange, again through the first heat exchanger 103 of the inside, tip 101 of probe bodies 21, and ejected by throttle orifice 102 (Joule-Thomson hole), be ejected into the tip 101 of probe bodies 21, form freezing region 107, the temperature in freezing region 107 is reduced.Become low-pressure argon from high pressure argon gas after argon throttling, simultaneous temperature can decline about 30-50 DEG C, and the low-temp low-pressure argon that throttle orifice 102 ejects, to after the argon cooling flowed into new in the first heat exchanger 103, is refluxed by gas backstreaming path 106.The low-temp low-pressure argon of backflow cools the high pressure argon gas that its inside newly flows into through the 3rd heat exchanger 109 outside, through the second heat exchanger 111 outside, the high pressure argon gas that its inside newly flows into is cooled again, after heat exchange, backflow argon is discharged into the atmosphere by exhaustor 23.
The heat exchanging process of this utility model embodiment is a positive feedback process: the argon that room temperature is 20 DEG C is after throttling, temperature declines tens degree, the high pressure argon gas newly entered cools through three grades of heat exchanges by the low temperature argon of backflow, the high pressure argon gas cooled through heat exchange of so new inflow ejects from throttle orifice, and then the temperature of argon gas ejected reduces by tens degree further, the low-pressure argon backflow of lower temperature continues cooling to the follow-up high pressure argon gas entered by heat exchange again.In such positive feedback process, the temperature in freezing region can drop quickly to about-150 DEG C poised states that reach capacity.
In order to show that the cryotherapy probe of this utility model embodiment can produce better refrigerating effect more fully, following correction data is listed: room temperature 20 DEG C at this, in 200ml water freezing 10 minutes, use the cryoprobe of U.S. CRYOCARE system and this utility model embodiment, experimental result contrast is as shown in table 1 below.
Table 1
From table 1, the ice hockey of prior art (U.S. CRYOCARE system) freezing generation pear shape, the part only having tip size larger that can effectively utilize, and the ice hockey of the positive elliptical shape of the freezing generation of this utility model embodiment, what increase ice hockey effectively utilizes volume.This utility model embodiment increases the volume of ice hockey, tumor less so only needs single cryoprobe just can cover completely, and do not need branched cryoprobe simultaneously freezing, even if the tumor of same volume, also cryoprobe usage quantity can be reduced, thus reduction medical treatment cost, reduce patient increases complication risk because of operation.Ice hockey just can reach the object of deactivation tumor at-40 DEG C, ice hockey center minimum temperature is lower, and the effective rate of utilization of ice hockey is higher, and procedure efficiency is higher.
In addition, when snorkel input high-pressure helium, can heat up after throttle orifice, because this utility model embodiment adopts three grades of heat exchanges, therefore heat exchange is abundant, and the speed of intensification and power equally also improve obviously, for destroy target tumor better effects if.
This utility model embodiment by placing heat exchanger respectively in probe tip, handle and in exhaustor, utilize the cold of the low pressure return argon discharged from throttle orifice, fully be cooled through the argon that snorkel newly enters, reduce the temperature newly entering argon, the temperature in freezing region is made to drop quickly to-150 DEG C of poised states that reach capacity, improve probe rate of temperature fall, increase ice hockey volume; Eliminate the phenomenon of handle frosting in art.Heat recovery owing to producing after to helium throttling in the process of heating is abundant, and quick heating, tumor inactivating efficacy is good.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to this utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a cryotherapy probe, comprises probe bodies, handle, snorkel, the first heat exchanger and exhaustor, it is characterized in that, also comprises the second heat exchanger and the 3rd heat exchanger; Described first heat exchanger is arranged on the taper inner of described probe bodies; It is inner that described second heat exchanger is arranged on described exhaustor; Described 3rd heat exchanger is arranged on described handle inner; Described probe bodies extend into described handle inner, and is communicated with one end of described handle; The other end of described handle is communicated with exhaustor; Described second heat exchanger, the 3rd heat exchanger and the first heat exchanger are cascaded by described snorkel; The port of export of described first heat exchanger is provided with throttle orifice.
2. cryotherapy probe as claimed in claim 1, it is characterized in that, described cryotherapy probe also comprises thermocouple; Described thermocouple is arranged at the taper inner of described handle inner or probe bodies.
3. cryotherapy probe as claimed in claim 1 or 2, it is characterized in that, described probe bodies inner surface is provided with vacuum heat-insulating layer.
4. cryotherapy probe as claimed in claim 1 or 2, it is characterized in that, described first heat exchanger, the second heat exchanger and the 3rd heat exchanger are fin tube type heat exchanger.
5. cryotherapy probe as claimed in claim 1 or 2, it is characterized in that, described handle is provided with the shell with heat-insulation layer; Described exhaustor is the PVC hose with heat-insulation layer.
6. cryotherapy probe as claimed in claim 1 or 2, it is characterized in that, described handle is horizontal handle or fold angle type handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520218208.0U CN204618397U (en) | 2015-04-13 | 2015-04-13 | A kind of cryotherapy probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520218208.0U CN204618397U (en) | 2015-04-13 | 2015-04-13 | A kind of cryotherapy probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204618397U true CN204618397U (en) | 2015-09-09 |
Family
ID=54037468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520218208.0U Active CN204618397U (en) | 2015-04-13 | 2015-04-13 | A kind of cryotherapy probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204618397U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758049A (en) * | 2015-04-13 | 2015-07-08 | 北京阳光易帮医疗科技有限公司 | Ultra-low temperature freezing probe and use method thereof |
| CN106725826A (en) * | 2017-01-11 | 2017-05-31 | 上海导向医疗系统有限公司 | The flexible cryoprobe of enhancing cutter head security and fixed J T groove locations |
-
2015
- 2015-04-13 CN CN201520218208.0U patent/CN204618397U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758049A (en) * | 2015-04-13 | 2015-07-08 | 北京阳光易帮医疗科技有限公司 | Ultra-low temperature freezing probe and use method thereof |
| CN106725826A (en) * | 2017-01-11 | 2017-05-31 | 上海导向医疗系统有限公司 | The flexible cryoprobe of enhancing cutter head security and fixed J T groove locations |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101732090B (en) | Cryoablation system with precooling device and control method thereof | |
| JP5490218B2 (en) | Single phase liquid refrigerant refrigeration ablation system having a multi-tube distal portion and associated method | |
| CN203122580U (en) | Ultra-low temperature freezing probe head | |
| CN107951558B (en) | Multifunctional gas pipeline controlled cryoablation system | |
| ES2437601T3 (en) | Cryoablation treatment system | |
| CN107951559B (en) | Low-temperature operation system | |
| CN109009406B (en) | Cryoablation device and cryoablation method | |
| CN101292897A (en) | Cold and hot probe treatment system | |
| CN101584602A (en) | Multi-stage precooling cryoablation method and equipment | |
| CN109481003A (en) | A kind of low temperature nitrogen Cryoablation system | |
| CN204797985U (en) | Novel pipe is melted in tumour refrigeration | |
| Liu et al. | Minimally invasive probe system capable of performing both cryosurgery and hyperthermia treatment on target tumor in deep tissues | |
| CN201519191U (en) | Freeze melting device with independent pre-cooling device | |
| CN105902310B (en) | Cryosurgery device for adjusting air pressure to realize freezing and rewarming | |
| CN206044717U (en) | A kind of cryoprobe | |
| CN204618397U (en) | A kind of cryotherapy probe | |
| CN104758049A (en) | Ultra-low temperature freezing probe and use method thereof | |
| US20080114347A1 (en) | Closed Loop Cryosurgical System | |
| CN106839576A (en) | Refrigerating plant | |
| CN105852960B (en) | Gas throttling type cryosurgical device and control method thereof | |
| CN101554338A (en) | Cold and hot ablation apparatus with cold and heat accumulation devices | |
| CN100361635C (en) | Pre cooling type refrigeration method and pre cooling type treatment device for curing tumour | |
| CN201631375U (en) | Precooling device for ultralow temperature cryotherapy system | |
| CN109984836B (en) | Cryoablation system | |
| CN105708541A (en) | Control method for throttling freezing type cryosurgery device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 102600 Beijing branch of Beijing economic and Technological Development Zone Street No. 8 Building No. 5 hospital 2 floor Room 201 Patentee after: Beijing sunlight Yi Bang medical science and technology company limited Address before: 100176 Beijing City, Beijing economic and Technological Development Zone, sea road, No. 25, building 219, room, room 6, No. four, room 220 Patentee before: Beijing sunlight Yi Bang medical science and technology company limited |