CN112022326A - Spray freezing pipe with adjustable scope of action - Google Patents
Spray freezing pipe with adjustable scope of action Download PDFInfo
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- CN112022326A CN112022326A CN202010830794.XA CN202010830794A CN112022326A CN 112022326 A CN112022326 A CN 112022326A CN 202010830794 A CN202010830794 A CN 202010830794A CN 112022326 A CN112022326 A CN 112022326A
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- pipeline
- air inlet
- spray
- heat insulation
- inlet pipeline
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
- A61B18/0218—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques with open-end cryogenic probe, e.g. for spraying fluid directly on tissue or via a tissue-contacting porous tip
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
- A61B2018/0212—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques using an instrument inserted into a body lumen, e.g. catheter
Abstract
The invention discloses a spray freezing duct with adjustable action range, which comprises a freezing duct body, wherein the duct body comprises a heat insulation pipeline and an air inlet pipeline, the heat insulation pipeline is sleeved on the air inlet pipeline, a plurality of spray nozzles are arranged at the end part of the air inlet pipeline and are distributed along the axial direction, the air inlet pipeline is used for introducing air and spraying by using a single spray nozzle or a plurality of spray nozzles, the structure of the spray freezing duct is improved, the plurality of spray nozzles are distributed along the axial direction and spray by using a single spray nozzle or a plurality of spray nozzles together according to requirements, the spray freezing range can be adjusted, repeated spraying is avoided, the use convenience is improved, in addition, the heat insulation pipeline can effectively insulate heat, unnecessary heat exchange of a refrigerant is prevented, the refrigerant can be conveniently and quickly conveyed to the spray nozzles, the loss of the refrigerant in the conveying process is reduced, the efficiency of freezing treatment.
Description
Technical Field
The invention relates to the technical field of cryoablation devices, in particular to a spray freezing catheter with an adjustable action range.
Background
The current methods for treating chronic bronchitis are primarily pharmacotherapy, which involves inhalation of corticosteroids, anticholinergic drugs, short/long acting beta 2 receptor agonists, expectorants such as ambroxol, carbocisteine, roflumilast, and the like. Although these herbs have certain therapeutic effects, they have many adverse reactions and side effects. Non-drug treatment modalities such as surgical treatment, mechanical ventilation, lung volume reduction, bronchial radiofrequency thermoforming and the like have poor treatment effects on patients with chronic bronchitis, and bronchial radiofrequency thermoforming treatment has poor effects on patients with chronic bronchitis who have a large amount of sticky phlegm.
Cryoablation is a therapeutic method of killing cellular tissues by cooling the tissues. When treating chronic bronchitis, the low-temperature freezing medium can be directly sprayed on the surface layer of bronchus to destroy mucous gland cells and goblet cells in the surface layer due to deep low-temperature freezing, and after repair, healthy cells can grow out again at the frozen part to remold the upper layer of mucous membrane, thereby relieving inflammation and high secretion state of chronic bronchitis.
Compared with the thermal ablation mode, the cryoablation mode has the advantages that the cryoablation mode is not easy to cause damage to cartilage, phenomena such as airway softening and collapse are seldom caused, and secondary dynamic stenosis can be prevented; cryotherapy is less likely to cause adhesion of the frozen site to surrounding tissue; the freezing treatment with controllable depth is not easy to cause serious injury to the adjacent great vessels and trachea, is not easy to cause perforation bleeding and is beneficial to tissue repair; cryoablation does not promote proliferation of granulation tissue and does not easily produce scar tissue. The cryoablation is applied in an airway, aiming at the spray freezing for treating chronic bronchitis, the existing spray catheter in the market is placed in an airway wall tissue cavity (6), as shown in figure 1, the action range and the action length are certain, when aiming at a longer bronchus, the position of the catheter needs to be moved and the spray freezing needs to be repeated for many times, the moving distance has strict requirements, the operation is complex, and the operation time is long.
Disclosure of Invention
In order to solve the technical defects, the invention provides the following technical scheme:
the utility model provides a freezing pipe of spraying with adjustable application range, includes freezing pipe body, and the body includes heat insulation pipeline, air inlet pipeline, and heat insulation pipeline cover is on air inlet pipeline, and air inlet pipeline tip sets up a plurality of spray nozzle, along axial distribution, air inlet pipeline admits air to single or a plurality of spray nozzle spray.
This spraying pipe improves structure to a plurality of spray nozzle of axial distribution, sprays with single or a plurality of jointly according to the demand, and the freezing scope of spraying is adjustable, avoids repeated spraying, improves the convenience of using.
In addition, the heat insulation pipeline can effectively insulate heat, prevents unnecessary heat exchange of the refrigerant, is beneficial to quickly conveying the refrigerant to the spray nozzle, reduces the loss of the refrigerant in the conveying process, improves the efficiency of the freezing treatment, avoids the damage caused by low temperature at the non-nozzle position, and protects doctors and patients.
Furthermore, the pipe wall of the heat insulation pipeline is in multipoint contact with the pipe wall of the air inlet pipeline, so that the large-area fitting of the pipe walls of the air inlet pipeline and the heat insulation pipeline can be prevented, and the heat insulation effect is prevented from being influenced.
Furthermore, the heat insulation pipeline is a vacuum pipeline, a vacuum pipeline joint is arranged on the vacuum pipeline, one end of the vacuum pipeline joint is communicated with the hollow cavity of the pipe wall or the gap between the heat insulation pipeline and the air inlet pipeline, and the other end of the vacuum pipeline joint is in butt joint with a vacuum pump, so that the vacuum heat insulation effect is better.
Furthermore, the spraying nozzle comprises a first spraying nozzle and a second spraying nozzle, the tail end of the second spraying nozzle is connected with the air inlet pipeline, and the opening at the head end is used for the first spraying nozzle to stretch.
The flexible push rod is arranged in the freezing guide pipe body, one end of the flexible push rod extends in the freezing guide pipe body and is connected with the first spray nozzle, the other end of the flexible push rod extends out of the end part or the side wall of the freezing guide pipe body, the first spray nozzle extends out or retracts from the opening of the second spray nozzle by applying force through the push rod, the position of the first spray nozzle and the position of the second spray nozzle are changed through the push rod, the size of an action range is further changed, and the overall structure is simple and stable; the whole length of the spray nozzle of the freezing guide pipe is more controllable (the first spray nozzle and the second spray nozzle can be distributed in an overlapping way, so that the length of the first spray nozzle and the second spray nozzle in the initial state is reduced), and the transportation, the operation and the like of the freezing guide pipe are facilitated; the number of effective spray openings can be controlled more accurately; the actual operation process is simpler and more convenient.
Preferably, the other end of the push rod is provided with scale marks to prompt the length of the push rod extending into the cavity of the tube, and the position of the existing spray nozzle can be known according to the length change, so that the accurate control is facilitated.
Furthermore, the air inlet pipelines are multiple and are respectively and correspondingly connected with the spraying nozzles, the tail end parts of the spraying nozzles positioned in front are sealed to be separated from the spraying nozzles positioned in rear, refrigerants are respectively supplied, the interference between the refrigerants is avoided, and the spraying freezing range is convenient to adjust.
Further, still include the handle, install at air inlet pipeline tail end and set up air inlet joint and be connected with the air inlet pipeline, facilitate the use and dock other equipment.
Further, still include temperature sensor, set up in the spraying shower nozzle intracavity, if temperature sensor is connected with peripheral hardware supervisory equipment, be favorable to constantly monitoring freezing temperature to in the regulation refrigerant temperature.
Further, the heat insulation pipeline and the air inlet pipeline can slide relative to each other to adjust the length of the end part of the air inlet pipeline exposed from the heat insulation pipeline, and further adjust the extending length of the spray nozzle, so that the spray freezing action range is changed.
The heat insulation pipeline is characterized by further comprising a buckle, wherein the buckle is fixed on the air inlet pipeline and corresponds to a groove formed in the end face of the heat insulation pipeline, the end part of the heat insulation pipeline is arranged in the groove, the size of the groove is tightly matched with the pipe wall of the heat insulation pipeline, and the stability of the heat insulation pipeline is improved.
Compared with the prior art, the invention has the beneficial effects that:
1. the spray freezing conduit improves the structure, the spray range is adjustable, and the use convenience is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a diagram of the mechanism of action of a conventional spray freeze conduit;
FIG. 2 is a first block diagram of the present spray freeze conduit;
FIG. 3 is a view showing the structure of the opening of the present spray nozzle;
FIG. 4 is a second block diagram of the present spray freezer conduit;
FIG. 5 is a third block diagram of the present spray freezer conduit;
FIG. 6 is a fourth block diagram of the present spray freezer conduit;
FIG. 7 is an extended configuration of the first spray head of FIG. 6;
FIG. 8 is a cross-sectional view of the vacuum line and air inlet line;
FIG. 9 is a view of the outline configuration of FIG. 4;
FIG. 10 is a view showing a structure of mounting a temperature sensor;
FIG. 11 is a diagram of the structure of the graduation marks on the intake manifold;
wherein the reference numerals are:
1. a spray nozzle; 2. a freezing pipe body; 3. a handle; 4. a push rod; 5. a temperature sensor; 6. airway wall tissue; 11. A first spray nozzle; 12. a second spray nozzle; 21/24, an air inlet pipeline; 22. an insulating pipeline; 23. buckling; 221. a joint; 222. a seal ring; 31/34, air inlet joint.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
This freezing pipe of spraying with adjustable application range, including freezing pipe body 2, the body includes thermal-insulated pipeline 22, air inlet pipeline 21, and thermal-insulated pipeline cover is on air inlet pipeline, and air inlet pipeline tip sets up a plurality of spray nozzle 1, along axial distribution, and air inlet pipeline admits air to single or a plurality of spray nozzle carry out the spraying.
For the structure that realizes spraying with single or multiple spray nozzles, roughly divided into three directions, as follows:
the first direction is that the air inlet pipeline is provided with a plurality of air inlet pipelines which are respectively and correspondingly connected with the spraying nozzles, and the tail end part of the spraying nozzle positioned in the front is sealed to be separated from the spraying nozzle positioned in the rear, so as to respectively supply the refrigerants.
For example, as shown in fig. 2, in the drawing, two spray nozzles are distributed at the end of the air intake pipeline, which are respectively a first spray nozzle 11 and a second spray nozzle 12, and are distributed along the axial direction, the spray nozzles may be fixedly formed by two independent nozzles, or formed by sealing two ends of a section of pipeline, and forming a partition in the middle, two spray nozzles are formed by opening on the pipe wall, or two independent cavities are directly partitioned in the end cavity of the heat insulation pipeline, and spray nozzles are formed by opening on the cavity wall, which is the structure shown in fig. 2, two air intake pipelines 21/24 extend along the heat insulation pipeline, and the end portions of the two air intake pipelines respectively extend into the first spray nozzle and the second spray nozzle, and are opened as required to enable a single nozzle or two nozzles to spray simultaneously, thereby achieving adjustment of the.
The second direction is, heat-insulating pipeline and air inlet pipeline can slide each other relatively to adjust the length that air inlet pipeline tip exposes from heat-insulating pipeline, and then adjust the extension length of spraying nozzle, thereby change the spray refrigeration effect scope.
For example, as shown in fig. 4, the head end of the air intake pipeline is divided into a plurality of regions along the axial direction of the pipeline, an opening is formed in the peripheral wall of the pipeline in each region to form a spray nozzle, two spray nozzles are shown in the figure, the first spray nozzle is arranged in the front, the second spray nozzle is arranged in the rear, the air intake pipeline is pushed to adjust the length of the head end of the air intake pipeline extending out of the end opening of the heat insulation pipeline, and the change of the spray range is realized.
Preferably, the air inlet pipeline is provided with scale marks to realize accurate position adjustment.
Preferably, the air inlet pipeline is fixed with a buckle 23, as shown in fig. 4, a groove is formed on the end surface of the heat insulation pipeline, the end of the heat insulation pipeline is arranged in the groove, the size of the groove is tightly matched with the pipe wall of the heat insulation pipeline, the stability of the heat insulation pipeline is improved in a tight fit mode, and meanwhile, the heat insulation pipeline can be moved by applying force.
The third direction is that the spray nozzles are of a telescopic sleeve-like structure, and the push rods are connected outside to push the spray nozzles to extend or shorten.
For example, as shown in fig. 6 and 7, taking two nozzles as an example for illustration, two nozzles with different diameters are formed at the end of the air inlet pipeline, which are respectively a first spray nozzle and a second spray nozzle, the tail end of the second spray nozzle is connected with the air inlet pipeline, and the opening at the head end is used for the first spray nozzle to stretch; and add flexible push rod 4, its one end extends and connects with first spray nozzle in the air inlet pipe line, another end stretches out from the end or sidewall of the pipe body of the frozen conduit, the sidewall stretches out in figure 6, while using, apply force make first spray nozzle stretch out or retract from the opening of second spray nozzle with the push rod.
The push rod can naturally extend out along the end part of the air inlet pipeline and can be freely selected according to requirements.
In addition, preferably, the other end of the push rod is marked or sprayed with scale marks to prompt the length of the push rod extending into the pipe cavity, the position of the existing spray nozzle can be known according to the length change, the position of the first spray nozzle can be accurately controlled, and the material arranged on the push rod can be freely selected according to performance requirements.
In addition, the structures in the three directions can be freely combined according to requirements, so that spraying can be realized by a single or multiple spraying nozzles.
In addition, as for the spray outlets on the wall of the pipe or the wall of the chamber, or the spray outlets of the independent liquid spray head, as shown in fig. 3, the selectable shapes comprise a rectangle in fig. 3, so that the refrigerant is easier to spray, the spraying resistance is small, and the processing technology is simpler; in the figure 3, the shape is circular, the refrigerant is sprayed out more uniformly, and the pushing performance of the guide pipe is better; regarding the size of the opening, it is preferable that the spray opening at the distal end is larger than the proximal end, and the refrigerant is delivered to the proximal end first when the refrigerant circulates, i.e. the pressure at the proximal end is higher, and at this time, when the spray opening is smaller, the refrigerant ejection is obstructed, and the pressure at the distal end is lower, and at this time, when the spray opening is larger, the refrigerant ejection is facilitated, such as shown in fig. 3, a cone, or as shown in fig. 3, a plurality of apertures are arranged in a row from large to small; of course, other shapes may be selected as desired.
In addition, more areas can be divided according to needs, and the holes are formed to form spray nozzles, such as a first spray nozzle, a second spray nozzle, a third spray nozzle and the like.
In addition, for the heat insulation pipeline, the pipe wall of the heat insulation pipeline is in multi-point contact with the pipe wall of the air inlet pipeline, so that the large-area fitting of the pipe walls of the air inlet pipeline and the heat insulation pipeline can be prevented, the heat insulation effect is influenced, the heat insulation pipeline is suitable for a single air inlet pipeline, and as shown in fig. 8 as an example, a convex structure such as a convex block and a convex ridge is formed on the inner pipe wall of the heat insulation pipeline in the figure, so that on one hand, the rigidity, the folding resistance and the pushing performance of the pipeline can be improved, and on the other hand, the large-area fitting of the pipe walls of the air inlet pipeline.
The selectable structure of the heat insulation pipeline comprises that the heat insulation pipeline is made of heat insulation materials, a vacuum pipeline is adopted, a vacuum pipeline joint 221 is arranged on the vacuum pipeline, one end of the vacuum pipeline is communicated with or a gap between the heat insulation pipeline and an air inlet pipeline, the other end of the vacuum pipeline is butted with a vacuum pump, the vacuum heat insulation effect is better, as shown in figure 2, a plurality of air inlet pipelines extend in a vacuum pipeline cavity, and joints are directly communicated with the vacuum pipeline cavity; or as shown in fig. 6, the end of the vacuum pipeline is connected with the air inlet pipeline in a necking mode, and the joint is directly communicated with the gap between the inner pipe wall of the vacuum pipeline and the outer pipe wall of the air inlet pipeline; or as shown in fig. 5, a sealing ring 222 is arranged between the end part of the vacuum pipeline and the air inlet pipeline, so that the sealing performance is improved, and the vacuum pipeline can slide relatively.
Or, the vacuum pipeline is a multi-layer structure, for example, a cavity is formed between two layers of pipe walls, and the joint is communicated with the cavity, as shown in fig. 4.
In addition, the air-conditioning device also comprises a handle 3 which is arranged at the tail end of the air inlet pipeline, the end part of the handle is provided with an air inlet joint 31, one end of the handle is connected with the air inlet pipeline, the other end of the handle is connected with a refrigerant input device, of course, a cavity at one end of the handle can be butted with the air inlet pipeline, and the other end of the handle is provided with the air inlet pipeline communicated with.
As for the handle and the heat insulation pipeline, the handle and the heat insulation pipeline can be fixedly connected or can be relatively moved in the axial direction, the connection mode of the buckle is not limited, and the handle and the heat insulation pipeline can be connected or disconnected according to requirements.
In addition, the temperature sensor 5 is also included and is installed in the spray nozzle cavity, as shown in fig. 10, for example, the temperature sensor is connected with an external monitoring device, which is beneficial to monitoring the freezing temperature at any time so as to adjust the temperature of the refrigerant.
The above structures can be freely selected and combined according to the performance and the structure to achieve the purpose of adjusting the spraying action area, and the embodiment of a preferred specific combination mode is shown below.
Example 1
As shown in fig. 2, the spray freezing duct comprises a freezing duct body 2, the duct body comprises heat insulation pipelines, air inlet pipelines, high polymer materials are prepared, the heat insulation pipelines 22 are sleeved on two air inlet pipelines 21/24, the heat insulation pipelines select vacuum pipelines, the high polymer materials are prepared, the head ends of joints 221 of the high polymer materials extend out of the side of the duct body, the tail ends of the joints are communicated with the cavities of the vacuum pipelines, two independent cavities are separated in the cavities of the end parts of the vacuum pipelines, a plurality of circular hole-shaped spray nozzles are arranged on the cavity wall to form a first spray nozzle 11 and a second spray nozzle 12, circular openings are shown in fig. 3, the two air inlet pipelines extend in the cavities of the vacuum pipelines, and the end parts of the two air inlet pipelines respectively extend into.
The handle 3 is fixed to the tail end of the air inlet pipeline, the two air inlet connectors 31/34 are in butt joint with the air inlet pipeline respectively, the end portion of the vacuum pipeline is fixed to the handle, and when the spray freezing range adjusting device is used, a single spray head or two spray heads are enabled to spray simultaneously by opening according to needs, and the spray freezing range adjusting is achieved.
Example 2
As shown in fig. 4, this spray freezing duct, including freezing duct body 2, the body includes heat insulation pipeline 22, air inlet pipeline 21, the macromolecular material preparation, heat insulation pipeline cover is on a single air inlet pipeline, heat insulation pipeline selects the vacuum pipeline of double-deck pipe wall for use, with the protruding stupefied of shaping multistage formula on the air inlet pipeline matched with pipe wall, axial extension, as shown in fig. 8, its joint 221 head end stretches out in the pipeline side, intracavity intercommunication between the two-layer pipe wall of tail end and vacuum pipeline, and fixed buckle 23 on air inlet pipeline in this embodiment, the ring body, slot on the terminal surface that corresponds the vacuum pipeline, the vacuum pipeline tip is arranged in the groove, and realize the tight fit with the vacuum pipeline through the slot width, the portable vacuum pipeline of application of force, fixed handle 3 on the air inlet pipeline tail end behind the buckle, handle tip installation air inlet joint 31, dock with the air inlet pipeline.
In this embodiment, the pipe wall of the head end of the air inlet pipeline is provided with a plurality of openings to form the spray nozzle 1, the area is divided, the front part is provided with the first spray nozzle 11, the rear part is provided with the second spray nozzle 12, and the shape of the openings on the pipe wall is as shown in fig. 3.
In this embodiment, the temperature sensors 5 are respectively installed in the first spray nozzle cavity and the second spray nozzle cavity, and as shown in fig. 10, the temperature sensors are connected with the external monitoring equipment.
Preferably, in this embodiment, scale marks are sprayed on both the outer wall of the vacuum pipeline and the outer wall of the air inlet pipeline, as shown in fig. 11 and 9.
When the device is used, the vacuum pipeline is adjusted, the spraying area is adjusted, and the device is accurately adjusted by observing the scale marks.
Example 3
As shown in fig. 5, compared with embodiment 2, in this embodiment, the vacuum pipeline is a single-layer structure, the movable sealing ring 222 is installed between the two end portions of the vacuum pipeline in the cavity and the air inlet pipeline, the joint 221 of the vacuum pipeline is communicated with the gap between the inner wall of the vacuum pipeline and the air inlet pipeline, and the convex edge is formed on the inner wall of the vacuum pipeline in the same way and extends axially, or the convex edge can be formed on the outer wall of the air inlet pipeline.
Example 4
As shown in fig. 6 and 7, in this embodiment, the spray freezing duct includes a freezing duct body 2, the body includes a heat insulation pipeline 22, an air inlet pipeline 21, and a polymer material is prepared, the heat insulation pipeline is sleeved on a single air inlet pipeline, the heat insulation pipeline is a vacuum pipeline with a single-layer pipe wall, a multi-section convex edge is formed on the pipe wall matched with the air inlet pipeline, and the multi-section convex edge extends axially, as shown in fig. 8, in this embodiment, the vacuum pipeline is fixed to the air inlet pipeline, the head end of a vacuum pipeline joint 221 of the vacuum pipeline extends out from the side of the pipeline, the tail end of the vacuum pipeline is communicated with a gap between the vacuum pipeline and the air inlet pipeline, a handle 3 is fixed to the tail end of the air inlet pipeline, an air inlet.
In this embodiment, a plurality of openings are formed in the pipe wall of the head end of the air inlet pipeline to form a spray nozzle 1, the pipe wall is divided into regions, the front is a first spray nozzle 11, the rear is a second spray nozzle 12, the second spray nozzle and the first spray nozzle are of a split structure, the pipe diameter of the first spray nozzle is smaller than that of the second spray nozzle, the end of the second spray nozzle is open, the first spray nozzle is telescopic from the opening, the flexible push rod 4 extends into the pipe from the opening of the side wall of the vacuum pipeline and is connected with the first spray nozzle along the cavity of the air inlet pipeline, the force application push rod pushes the first spray nozzle to extend out from the opening of the second spray nozzle, or the push rod is pulled back to reset the first spray nozzle.
In addition, in order to avoid the first spraying nozzle separating from the second spraying nozzle, in this embodiment, a sealing ring is installed in the cavity at the opening at the end of the second spraying nozzle, and a protruding ring is radially extended from the peripheral wall at the tail end of the first spraying nozzle to limit the protruding ring.
In this embodiment, the shape of the opening in the tube wall is shown in fig. 3.
In this embodiment, the temperature sensors 5 are respectively installed in the first spray nozzle cavity and the second spray nozzle cavity, and as shown in fig. 10, the temperature sensors are connected with the external monitoring equipment.
Preferably, in this embodiment, the push rod located outside the freezing catheter tube body is sprayed with scale marks, and the position of the first spray nozzle is accurately adjusted by observing the scale marks, so that the accurate adjustment of the spray range is realized.
Preferably, still mountable the buckle, as shown in figure 4 structure and position, the individual layer vacuum line and the buckle tight fit, application of force vacuum line remove, and the flexible regulation of cooperation first spray nozzle and second spray nozzle can further expand the spraying application range.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A spray freezing pipe with adjustable scope of action, includes freezing pipe body, its characterized in that: the pipe body comprises a heat insulation pipeline and an air inlet pipeline, the heat insulation pipeline is sleeved on the air inlet pipeline, a plurality of spraying nozzles are arranged at the end part of the air inlet pipeline and distributed along the axial direction, and the air inlet pipeline is used for introducing air to spray by using a single or a plurality of spraying nozzles.
2. A spray freeze conduit according to claim 1, wherein: the pipe wall of the heat insulation pipeline is in multipoint contact with the pipe wall of the air inlet pipeline.
3. A spray freeze conduit according to claim 1, wherein: the heat insulation pipeline is a vacuum pipeline, a vacuum pipeline joint is arranged on the vacuum pipeline, one end of the vacuum pipeline joint is communicated with the hollow cavity of the pipe wall or the gap between the heat insulation pipeline and the air inlet pipeline, and the other end of the vacuum pipeline joint is in butt joint with a vacuum pump.
4. A spray freeze conduit according to claim 1, wherein: the spraying nozzle comprises a first spraying nozzle and a second spraying nozzle, the tail end of the second spraying nozzle is connected with the air inlet pipeline, and the opening at the head end is used for the first spraying nozzle to stretch;
the flexible push rod is arranged, one end of the flexible push rod extends in the freezing guide pipe body and is connected with the first spraying nozzle, the other end of the flexible push rod extends out of the end part or the side wall of the freezing guide pipe body, and the first spraying nozzle extends out or retracts from the opening of the second spraying nozzle through the force applied by the push rod.
5. A spray freeze conduit according to claim 4 wherein: the other end of the push rod is provided with scale marks to prompt the length of the push rod extending into the tube cavity.
6. A spray freeze conduit according to claim 1, wherein: the air inlet pipelines are multiple and are respectively and correspondingly connected with the spraying nozzles, and the tail end parts of the spraying nozzles positioned in front are sealed to be separated from the spraying nozzles positioned behind.
7. A spray freeze conduit according to claim 1, wherein: the air inlet joint is arranged at the tail end of the air inlet pipeline and is connected with the air inlet pipeline.
8. A spray freeze conduit according to claim 1, wherein: the temperature sensor is arranged in the spray nozzle cavity.
9. The spray freeze conduit of any of claims 1 to 8, wherein: the heat insulation pipeline and the air inlet pipeline can slide relative to each other so as to adjust the length of the end part of the air inlet pipeline exposed from the heat insulation pipeline.
10. A spray freeze conduit according to claim 9 wherein: the heat insulation pipeline is characterized by further comprising a buckle, wherein the buckle is fixed on the air inlet pipeline and corresponds to a groove formed in the end face of the heat insulation pipeline, the end portion of the heat insulation pipeline is arranged in the groove, and the size of the groove is tightly matched with the pipe wall of the heat insulation pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010830794.XA CN112022326A (en) | 2020-08-18 | 2020-08-18 | Spray freezing pipe with adjustable scope of action |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010830794.XA CN112022326A (en) | 2020-08-18 | 2020-08-18 | Spray freezing pipe with adjustable scope of action |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113768610A (en) * | 2021-11-11 | 2021-12-10 | 上海导向医疗***有限公司 | Cryoablation needle with adjustable vacuum wall position |
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| WO2023083049A1 (en) * | 2021-11-11 | 2023-05-19 | 上海导向医疗***有限公司 | Vacuum wall position adjustable cryoablation needle |
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