Temperature-adjustable atomization device

Abstract

The utility model embodiment discloses a temperature-adjustable atomization ablation device. The temperature-adjustable atomization ablation device of the present application includes: a liquid storage tank for accommodating the working medium to be atomized; a temperature control component, including a temperature control part, which is arranged in the liquid storage tank and used to heat the working medium in the liquid storage tank; an output component, including a piston slidably arranged in the liquid storage tank and a driving component for driving the piston to move; a handle, including an infusion pipeline, which is respectively connected to the liquid storage tank and the interventional catheter, and is used to transport the working medium in the liquid storage tank to the interventional catheter for atomization; a negative pressure reflux passage, which is connected to the infusion pipeline, and is used to make the fluid input into the infusion pipeline flow back to the negative pressure reflux passage for discharge through negative pressure. The atomization ablation device of the present application completes the disinfection of the handle and the preheating of the interventional catheter without outputting the medium to the outside by setting the negative pressure reflux passage, thereby ensuring the temperature stability of the liquid output to the outside, improving the temperature control accuracy, and improving the hygienic and safety performance.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of medical equipment, and in particular to a temperature-adjustable atomization ablation device. Background Art

[0002] Steam ablation is a medical procedure that uses a steam generator to generate steam, which is then delivered to the lesion in the human body through a catheter, using high-temperature steam for ablation treatment.

[0003] The steam ablation system in the prior art usually sets a steam generator to heat the liquid to above the boiling point and then generate steam for atomization. This causes the atomized steam to carry too much energy and is not suitable for small-scale ablation or certain thermal surgeries (the temperature only needs to be 60-80°C). Since the steam ablation system needs to be heated to more than 100°C to achieve atomization of the liquid, it is impossible to adjust the temperature to below 100°C to adapt to the application scenarios of small-scale ablation and low-temperature thermal therapy. At the same time, there is a large energy loss in the process of transporting the atomized steam from the steam generator to the lesion location, and it is impossible to achieve accurate control of the temperature of the atomized liquid. Utility Model Content

[0004] The embodiment of the present application provides a temperature-adjustable atomization ablation device to solve the problems in the prior art that the atomization temperature cannot be accurately controlled, and that a period of high-temperature steam needs to be output before the operation, resulting in low work efficiency and affecting the hygiene and safety of the surgical scene.

[0005] An embodiment of the present application provides a temperature-adjustable atomization ablation device, including a liquid storage tank for containing a working fluid to be atomized; a temperature control component, including a temperature control element, which is disposed in the liquid storage tank and is used to heat the working fluid in the liquid storage tank; an output component, including a piston slidably disposed in the liquid storage tank and a driving component for driving the piston to move; a handle, including an infusion line, which is respectively connected to the liquid storage tank and the interventional catheter, and is used to transport the working fluid in the liquid storage tank to the interventional catheter for atomization; a negative pressure reflux passage, which is connected to the infusion line, and is used to cause the fluid input into the infusion line to flow back to the negative pressure reflux passage for discharge through negative pressure. By setting up a negative pressure reflux passage, the heated working fluid in the liquid storage tank can be used to perform preoperative high-temperature sterilization of the handle and / or preheat the interventional catheter connected to the handle through the infusion pipeline, and then be recirculated and discharged from the negative pressure reflux passage. The disinfection of the handle and the preheating of the interventional catheter are completed without outputting the medium to the outside, thereby avoiding biological infection and improving the sanitary and safety performance. Preheating can ensure the stability of the temperature of the liquid output to the outside, and combined with the temperature control function of the temperature control component, the temperature control accuracy is improved.

[0006] In a feasible solution, the atomization ablation device includes a confluence passage, a confluence piece, and a total discharge port, and the two ends of the confluence passage are respectively connected to the confluence piece and the total discharge port, and are used to confluence and discharge the fluid discharged from the inside of the atomization ablation device. The confluence passage can gather multiple discharge passages inside the atomization ablation device into the confluence passage and discharge them at the total discharge port, which is conducive to simplifying the pipeline inside the atomization ablation device and reducing the weight and assembly difficulty of the device.

[0007] In a feasible solution, the atomization ablation device includes a reflux valve, a negative pressure pump and a one-way valve arranged in sequence on the negative pressure reflux path along the fluid discharge direction, and the negative pressure pump is used to provide negative pressure for the negative pressure reflux path; the two ends of the negative pressure reflux path are respectively connected with the infusion pipeline and the confluence path. The negative pressure pump provides negative pressure for the negative pressure reflux path, so that the fluid in the positive pressure pipeline can be refluxed to the negative pressure pipeline and output, avoiding the output of a section of atomized chemical through the handle before the operation, which affects the work efficiency and hygiene.

[0008] In a feasible solution, the handle includes an infusion head, and the infusion line includes a positive pressure line and a negative pressure line. The infusion head is used to connect and communicate with the interventional catheter. The infusion head is provided with an infusion port and a reflux port. The positive pressure line is respectively communicated with the infusion port and the liquid outlet of the liquid storage tank. The negative pressure line can be communicated with the positive pressure line through the reflux port and the infusion port, and the negative pressure line is communicated with the negative pressure reflux path. By setting a positive pressure line and a negative pressure line inside the handle, the heated working fluid is output from the positive pressure line to the infusion head for disinfection or enters the catheter for preheating, and then refluxes through the negative pressure line, so as to avoid the used liquid from refluxing to the positive pressure line to contaminate the line and avoid biological infection.

[0009] In a feasible solution, the atomization ablation device includes an emptying passage and a bubble detection valve, a bubble sensor, and an exhaust valve sequentially arranged on the emptying passage, the liquid storage tank is vertically arranged, the emptying passage is connected to the top of the liquid storage tank and the confluence passage, and the gas discharged from the liquid storage tank passes through the bubble detection valve, the bubble sensor, and the exhaust valve in sequence and then is discharged through the confluence passage. The emptying passage is used to discharge the gas in the gas storage tank to avoid affecting the pressure detection of the output fluid and thus affecting the precise control of the fluid output, and also to avoid the possible harm caused when the gas is input into the human body.

[0010] In a feasible solution, the atomization ablation device further includes a gas storage tank, which is arranged on the emptying passage and between the bubble sensor and the exhaust valve. The gas storage tank is used to buffer the gas and / or liquid on the emptying passage to prevent the fluid from directly impacting the exhaust valve, and also to prevent the emptying passage from being discharged in time, resulting in the fluid flowing back into the liquid storage tank, thereby improving the safety performance and quality of the atomization ablation device.

[0011] In a feasible solution, the atomization ablation device further includes: a drainage passage, connected with the liquid storage tank and the confluence passage, for discharging waste liquid in the liquid storage tank, and a pressure sensor and a drain valve are sequentially arranged on the drainage passage along the fluid flow direction; a pressure relief passage, connected with the liquid storage tank and the confluence passage, for regulating the pressure in the liquid storage tank, and a pressure relief valve for controlling the on-off of the pressure relief passage is arranged on the pressure relief passage.

[0012] In a feasible solution, the liquid storage tank is arranged vertically; the temperature control component also includes a mounting seat, in which a temperature control cavity is arranged along the circumferential axial direction of the mounting seat, the temperature control component includes a positioning mounting part and a heating part, the positioning mounting part is sealed with the mounting seat, the heating part is located in the temperature control cavity and forms an annular heating gap with the cavity wall of the temperature control cavity, the mounting seat is arranged at the bottom of the liquid storage tank and communicated with the liquid storage tank, and the working fluid in the liquid storage tank flows into the heating gap for heating; the liquid storage tank is provided with a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are arranged on the circumferential side wall of the mounting seat and communicated with the annular heating gap. The setting of the annular heating gap can quickly and efficiently heat the newly-flown liquid, avoid the phenomenon of temperature stratification due to uneven heating of the liquid, and accurately control the output liquid temperature to improve the temperature control accuracy.

[0013] In a feasible solution, the driving assembly includes: a driving motor; a transmission screw connected to the driving motor; a driving slider fixedly arranged on the piston and screwed to the transmission screw, the piston is a cylindrical structure with an open upper end, one end of the transmission screw extends and is arranged in the piston; a guide rail, the driving slider is slidably arranged on the guide rail. The rotational motion of the driving motor and the transmission screw is converted into linear motion and guidance is provided to achieve stable and high-precision movement of the piston. At the same time, the cooperation between the driving slider and the guide rail ensures that the slider can stably perform linear motion, thereby improving the control accuracy of the liquid output of the liquid storage tank.

[0014] In a feasible solution, the atomization ablation device includes a liquid inlet passage, a working fluid input port, and a disinfection component. The liquid inlet passage connects the working fluid input port and the liquid storage tank to replenish the working fluid for the liquid storage tank. The disinfection component is arranged at the working fluid input port to disinfect the working fluid input into the liquid inlet passage, so as to avoid contamination of the atomized working fluid with bacteria and other substances and to avoid biological infection.

[0015] Compared with the prior art, the advantage of the present application lies in that the temperature of the working medium in the liquid storage tank is controlled by setting a temperature control component, thereby solving the problem that the temperature cannot be controlled in the prior art; and by setting a negative pressure reflux passage, the heated working medium in the liquid storage tank can be used to sterilize the handle before surgery at high temperature and / or preheat the interventional catheter connected to the handle through the infusion pipeline, and then be refluxed and discharged from the negative pressure reflux passage, thereby completing the disinfection of the handle and preheating of the interventional catheter without outputting the medium to the outside, avoiding biological infection and improving the sanitary safety performance, while preheating can ensure the stability of the temperature of the liquid output to the outside, and combined with the temperature control function of the temperature control component, the temperature control accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 It is a schematic diagram of the temperature-adjustable atomization ablation device in the first embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the internal structure of the handle in Embodiment 1 of the present application;

[0019] Figure 3 for Figure 2 A perspective view of the filling head and dust cover of the middle handle;

[0020] Figure 4 This is a schematic diagram of the internal layout of the temperature-adjustable atomization ablation device in Example 1 of the present application;

[0021] Figure 5 It is a schematic diagram of the front side of the internal pipeline of the temperature-adjustable atomization ablation device in Example 1 of the present application;

[0022] Figure 6 It is a schematic diagram of the back side of the internal pipeline of the temperature-adjustable atomization ablation device in Example 1 of the present application;

[0023] Figure 7 This is a schematic diagram of the back side of the internal pipeline of the temperature-adjustable atomization ablation device in Example 1 of the present application (hiding the guide rail and the driving slider);

[0024] Figure 8 A top view of the internal pipeline of the temperature-adjustable atomization ablation device in Example 1 of the present application;

[0025] Fig. 9A cross-sectional view of the coordination between the liquid storage tank, the temperature control component and the output component in one embodiment of the present application;

[0026] Fig.10 This is a schematic diagram of the pipeline connection of the temperature-adjustable atomization ablation device in Example 1 of the present application;

[0027] Fig.11 This is a schematic diagram of the internal pipeline of the temperature-adjustable atomization ablation device in Example 2 of the present application;

[0028] Fig.12 for Fig.11 A schematic diagram of the back side of the internal pipeline of the temperature-adjustable atomization ablation device;

[0029] Fig.13 This is a schematic diagram of the internal structure of the handle in the second embodiment of the present application;

[0030] Fig.14 This is a schematic diagram of the pipeline connection of the temperature-adjustable atomization ablation device in Example 2 of the present application.

[0031] Numbers in the figure:

[0032] 1. Liquid storage tank; 1001. Liquid inlet; 1002. Liquid outlet; 1003. Temperature sensor;

[0033] 2. Output assembly; 21. Piston; 22. Driving assembly; 221. Driving motor; 222. Driving screw; 223. Driving slider; 224. Guide rail; 225. Stopper; 226. Position sensor; 227. Trigger; 23. First sealing member;

[0034] 3. Temperature control assembly; 31. Mounting seat; 32. Temperature control member; 321. Mounting portion; 323. Heating portion; 324. Annular heating gap; 33. Second sealing member; 34. Third sealing member;

[0035] 4. Handle; 41. Heating element; 42. Infusion head; 421. Infusion port; 422. Reflux port; 43. Positive pressure pipeline; 44. Negative pressure pipeline; 45. Dust cover; 451. Connecting channel; 452. Card slot; 453. Card connector; 46. Handle shell; 47. Heating seat; 48. Cable;

[0036] 5. Negative pressure reflux passage; 51. Negative pressure pump; 52. Reflux valve; 53. Check valve;

[0037] 6. Converging passage; 61. Converging piece; 62. Main drain outlet;

[0038] 7. Exhaust passage; 71. Bubble detection valve; 72. Bubble sensor; 73. Gas storage tank; 74. Exhaust valve;

[0039] 8. Pressure relief passage; 81. Pressure relief valve;

[0040] 9. drainage passage; 91. pressure sensor; 92. drainage valve;

[0041] 10. Liquid inlet passage; 101. Working fluid inlet;

[0042] 11. liquid outlet passage; 111. liquid outlet valve;

[0043] 12. Air intake passage; 121. Air pump; 122. Exhaust solenoid valve; 123. Pressure regulating valve; 124. Air pressure detection component;

[0044] 13. rack; 131. mounting platform; 132. stand;

[0045] 14. Shell;

[0046] 15. Switching power supply;

[0047] 16. Cooling fan. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0049] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0050] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0051] The steam ablation system in the prior art usually sets a steam generator to heat the liquid to above the boiling point and then generate steam for atomization. This causes the atomized steam to carry too much energy and is not suitable for small-scale ablation or certain surgeries that only require thermal therapy (the temperature only needs to be 60-80°C). Since the steam ablation system needs to be heated to a temperature greater than 100°C to achieve atomization of the liquid, it is impossible to adjust the temperature to below 100°C to adapt to the application scenarios of small-scale ablation and thermal therapy. At the same time, there is a large energy loss in the process of transporting the atomized steam from the steam generator to the lesion location, and it is impossible to achieve accurate control of the temperature of the atomized liquid.

[0052] Embodiment 1

[0053] Figure 1 The atomization ablation device in the first embodiment of the present application, such as Figures 1 to 10 As shown, the atomization ablation device of this embodiment includes a liquid storage tank 1, a temperature control component 3, an output component 2, and a handle 4. After the temperature control component 3 heats the liquid working medium in the liquid storage tank 1 to the target atomization temperature, the output component 2 works to deliver the heated liquid working medium to the handle 4. The front end of the handle 4 can be connected to the interventional catheter, and the working medium is delivered to the interventional catheter through the handle 4. The front end of the interventional catheter is provided with an atomization structure, and the liquid heated to the target temperature in the liquid storage tank 1 is atomized by the atomization structure and then output to the lesion position through the interventional catheter, wherein the target temperature is less than 100°C, preferably 60-80°C, and the atomized tiny droplets can cover the designated lesion area more evenly, and the energy carried is quickly absorbed, so that the ablation effect can be achieved with less liquid and energy, reducing the risk of inputting too much liquid and energy into the lesion position.

[0054] It should be noted that the atomization principle of the atomization ablation device in this embodiment is to inject the heated liquid working medium into the atomization structure in the interventional catheter through the handle 4 and atomize it by high pressure and / or centrifugation.

[0055] like Figure 2 and Figure 3 As shown, the handle 4 includes a heating element 41, an infusion head 42 connected to and communicated with the interventional catheter, and an infusion pipeline, the infusion pipeline includes a positive pressure pipeline 43 and a negative pressure pipeline 44; the liquid storage tank 1 has a liquid outlet 1002, one end of the positive pressure pipeline 43 is connected to the liquid outlet 1002 of the liquid storage tank 1, and the other end is connected to the infusion head 42, the heating element 41 has a heating chamber, the heating chamber is arranged on the positive pressure pipeline 43 and is connected to the positive pressure pipeline 43, and is used to heat the working fluid passing through the positive pressure pipeline 43; in this embodiment, the temperature control component 3 heats the working fluid in the liquid storage tank 1 once, and the working fluid heated to the target atomization temperature is subjected to secondary fine-tuning heating in the heating chamber of the handle 4, which compensates for the heat loss of the working fluid during the transportation process, improves the regulation of the working fluid temperature, and can also flexibly adjust the working fluid output by the handle 4 according to the required target temperature.

[0056] like Figure 3 As shown, an infusion port 421 and a reflux port 422 are provided on the perfusion head 42, and the positive pressure line 43 is connected to the infusion port 421 to realize liquid supply, and the negative pressure line 44 can be connected to the positive pressure line 43 through the reflux port 422 and the infusion port 421, so that the working fluid of the positive pressure line 43 can be refluxed from the negative pressure line 44 and discharged from the inside of the atomization ablation device.

[0057] like Figures 6 to 8 As shown, the atomization ablation device also includes a handle negative pressure component, which is used to provide negative pressure for the negative pressure pipeline 44. The heated working fluid output from the liquid storage tank 1 flows into the injection head 42 through the positive pressure pipeline 43 for output, and can flow back through the negative pressure pipeline 44 and be discharged out of the atomization ablation device under the negative pressure of the handle negative pressure component. With such a configuration, the internal pipeline of the handle 4 and the perfusion head 42 can be sterilized at high temperature by inputting a high-temperature working medium into the handle 4. At this time, the temperature control component 3 can be controlled to heat the working medium temperature in the liquid storage tank 1 to more than 100°C for high-temperature sterilization. The waste liquid after high-temperature sterilization flows back to the inside of the atomization ablation device through the negative pressure pipeline 44 for discharge, avoiding the liquid after sterilization from contaminating the positive pressure pipeline 43, and also avoiding the need to output a section of high-temperature steam to the outside when using the device, and reducing the risk of biological contamination during repeated use of the device, thereby improving safety performance and sanitary quality; before the ablation operation, the interventional catheter at the front end of the handle 4 can be preheated by inputting a working medium of the target ablation temperature into the handle 4, reducing the loss of the working medium temperature, further improving the temperature control accuracy of the atomized liquid, and ensuring that the atomized liquid output to the lesion by the interventional catheter reaches the atomization treatment temperature. The atomization ablation device provided in the embodiment of the present application cooperates with three aspects: the primary heating of the working medium at the liquid storage tank 1, the secondary heating at the handle 4, and the pre-operative preheating of the interventional catheter to achieve precise control of the output atomized liquid temperature.

[0058] In one embodiment, if Figure 6 and Figure 7 As shown, the handle negative pressure assembly includes a negative pressure pump 51, and the atomization ablation device includes a negative pressure reflux passage 5. The negative pressure reflux passage 5 is connected to the negative pressure pipeline 44 for discharging the fluid in the negative pressure pipeline 44, and the negative pressure pump 51 is arranged on the negative pressure reflux passage 5. A reflux valve 52 and a one-way valve 53 are also arranged on the negative pressure reflux passage 5. The reflux valve 52 is arranged between the handle 4 and the negative pressure pump 51 to control the on-off of the negative pressure reflux passage 5. The one-way valve 53 is arranged behind the negative pressure pump 51 along the fluid discharge direction to prevent the discharged waste liquid from flowing back into the negative pressure reflux passage 5 and the handle 4. In other words, the reflux valve 52, the negative pressure pump 51 and the one-way valve 53 are arranged in sequence on the negative pressure reflux passage 5 along the fluid discharge direction, wherein the discharged fluid refers to the working fluid output from the liquid storage tank 1 for high temperature disinfection of the internal pipeline of the handle 4 and the perfusion head 42.

[0059] like Figure 2 and Figure 3 As shown, the handle 4 also includes a dust cover 45, and the dust cover 45 sealing cover is arranged on the injection head 42; a connecting channel 451 is opened on the dust cover 45, and the connecting channel 451 is connected with the positive pressure pipeline 43 and the negative pressure pipeline 44 to form a disinfection passage, and the heated working medium flows back from the positive pressure pipeline 43 to the negative pressure pipeline 44 through the connecting channel 451 and is discharged inside the atomization device, so that the internal pipeline of the handle 4 and the injection head 42 are disinfected at high temperature during the flow of the high-temperature working medium, especially the part of the injection head 42 used for connecting with the interventional catheter.

[0060] like Figure 2 As shown, the handle 4 also includes a handle shell 46 and a heating element 41. The heating element 41 is arranged in the handle shell 46. The heating element 41 is configured as a heating tube. The heating tube has a heating cavity. The heating cavity is arranged on the positive pressure pipeline 43 and is connected to the positive pressure pipeline 43 for heating the working medium passing through the positive pressure pipeline 43.

[0061] The handle 4 further includes a heating seat 47 , which is disposed on the handle 4 and is used to mount and fix the heating element 41 .

[0062] In one embodiment, if Figure 2 As shown, a card slot 452 is provided on the handle shell 46, and a card connector 453 is provided on the outer peripheral side wall of the dust cover 45. The dust cover 45 is covered on the infusion head 42 and rotated so that the card connector 453 is snapped into the card slot 452 for snap-fitting and fixing. When the interventional catheter needs to be docked for operation, the dust cover 45 can be removed by simply reversing the dust cover 45 to disengage the card connector 453 from the card slot 452.

[0063] like Figures 6 to 8As shown, the atomization ablation device includes a liquid inlet passage 10 and a liquid outlet passage 11 respectively connected to the liquid storage tank 1. The liquid inlet passage 10 is an external pipeline for providing and replenishing the atomized medium for the liquid storage tank 1. The liquid outlet passage 11 connects the liquid storage tank 1 and the handle 4, and is used to transport the medium in the liquid storage tank 1 to the handle 4.

[0064] like Figure 8 As shown, the handle 4 also includes an electric cable 48 , which is electrically connected to an external power source and the heating element 41 .

[0065] like Figures 5 to 8 as well as Fig.10 As shown, the atomization ablation device includes a confluence passage 6, a confluence piece 61 and a total discharge port 62. The two ends of the confluence passage 6 are respectively connected to the confluence piece 61 and the total discharge port 62, which are used to confluence and discharge the fluid discharged from the inside of the atomization ablation device to avoid the waste liquid from being discharged from the front end of the handle 4. By providing the confluence passage 6, multiple discharge passages inside the atomization ablation device can be gathered into the confluence passage 6 and discharged at the total discharge port 62, which is conducive to simplifying the pipeline inside the atomization ablation device and reducing the weight and assembly difficulty of the device.

[0066] like Figures 5 to 7 as well as Fig.10 As shown, the atomization ablation device includes an emptying passage 7 and a bubble detection valve 71, a bubble sensor 72, an air tank 73, and an exhaust valve 74 which are sequentially arranged on the emptying passage 7 along the fluid discharge direction. The liquid storage tank 1 is vertically arranged, and the emptying passage 7 is connected to the top of the liquid storage tank 1 and the confluence passage 6. The gas discharged from the liquid storage tank 1 passes through the bubble detection valve 71, the bubble sensor 72, the air storage tank 73, and the exhaust valve 74 in sequence and is then discharged through the confluence passage 6. If there is gas in the gas tank 73, it will affect the pressure detection of the output fluid and thus affect the precise control of the fluid output volume, and may even cause harm when the gas is input into the human body, such as the risk of pneumothorax during lung ablation surgery. Therefore, the gas in the gas tank 73 needs to be discharged during the preparation work. When performing the gas discharge operation, open the bubble detection valve 71 and the exhaust valve 74, and drive the piston 21 downward through the drive assembly 22 to form a positive pressure, so that the gas at the top of the gas tank 73 is discharged from the exhaust passage 7. When the bubble sensor 72 detects the liquid, it can be determined that the air in the gas tank 73 has been emptied, and the bubble detection valve 71, the exhaust valve 74 and the drive assembly 22 are closed.

[0067] Among them, a gas storage tank 73 is set on the emptying passage 7 to buffer the gas and / or liquid on the emptying passage 7 to prevent the fluid from directly impacting the exhaust valve 74. At the same time, it also avoids the phenomenon that the emptying passage 7 is not discharged in time, resulting in the fluid flowing back into the liquid storage tank 1, thereby improving the safety performance and quality of the atomization ablation equipment.

[0068] like Figures 5 to 8As shown, the atomization ablation device includes a pressure relief passage 8 and a pressure relief valve 81. The pressure relief passage 8 is connected to the liquid storage tank 1. The pressure relief valve 81 is arranged on the pressure relief passage 8 and is used to connect or cut off the pressure relief passage 8. When the pipeline is blocked or the solenoid valve on the liquid outlet passage 11 fails and cannot be opened, after the pressure in the tank reaches the set value, the pressure relief valve 81 needs to be opened to open the pressure relief passage 8 to discharge part of the liquid from the confluence passage 6 to ensure the safety of the device.

[0069] like Figures 5 to 8 As shown, the atomization ablation device includes a drainage passage 9, a drainage valve 92, and a pressure sensor 91. The drainage passage 9 is connected to the liquid storage tank 1. The pressure sensor 91 and the drainage valve 92 are sequentially arranged on the drainage passage 9 along the fluid flow direction. The drainage valve 92 is used to connect or cut off the drainage passage 9. The fluid flow direction refers to the direction in which the fluid is discharged from the drainage passage 9. The purpose of setting the drainage passage 9 is to empty the liquid in the liquid storage tank 1 after the atomization ablation device is used, or to discharge the waste liquid for cleaning the liquid storage tank 1.

[0070] In this embodiment, if Figure 5 and Fig. 9 As shown, the liquid storage tank 1 is arranged vertically; the temperature control component 3 also includes a mounting seat 31, and a temperature control cavity is provided in the mounting seat 31 along its own circumferential axial direction. The temperature control component 32 includes a positioning mounting portion 321 and a heating portion 323. The mounting seat 31 is arranged between the liquid storage tank 1 and the mounting seat 31, and the positioning mounting portion 321 is sealed and connected to the mounting seat 31. At least part of the heating portion 323 is located in the temperature control cavity and forms an annular heating gap 324 with the cavity wall of the temperature control cavity. The mounting seat 31 is arranged at the bottom of the liquid storage tank 1 and is connected to the liquid storage tank 1. The working fluid in the liquid storage tank 1 flows into the annular heating gap 324, is heated, and then flows out. With such an arrangement, the heating portion 323 is in direct contact with the working fluid, and the heating efficiency is improved. In addition, the liquid storage tank 1 is arranged vertically, so that convection automatically occurs between the heated liquid at the bottom of the liquid storage tank 1 and the unheated liquid in the upper layer, making the liquid in the liquid storage tank 1 more evenly heated, avoiding temperature stratification, and improving the accuracy of controlling the working fluid temperature. This is particularly important during surgery, ensuring that the output working fluid temperature is consistent and avoiding untimely heating.

[0071] The liquid storage tank has a liquid inlet 1001 and a liquid outlet 1002. More preferably, the liquid inlet 1001 and the liquid outlet 1002 of the liquid storage tank 1 are provided on the circumferential side wall of the mounting seat 31 and are connected to the annular heating gap 324. The liquid inlet passage 10 is connected to the liquid inlet 1001 to provide the liquid storage tank 1 with working fluid, and the liquid outlet passage 11 is connected to the liquid outlet 1002 to deliver the heated working fluid to the handle 4. In this way, the working fluid enters the liquid storage tank 1 from the annular heating gap 324 to be heated and output from the annular gap, ensuring that the heating part 323 can quickly heat the newly added working fluid to reduce temperature fluctuations, and ensuring that the output working fluid temperature reaches the preset heating temperature of the heating part 323, reducing the loss of working fluid temperature. It should be noted that the liquid inlet and liquid outlet of the liquid storage tank 1 are not carried out at the same time.

[0072] Please continue reading Fig. 9 The temperature control component 3 also includes a second seal 33 and a third seal 34. The second seal 33 is arranged between the liquid storage cylinder and the mounting seat 31 to enhance the sealing performance between the bottom of the liquid storage cylinder and the mounting seat 31. The third seal 34 is arranged between the mounting seat 31 and the mounting portion 321 to enhance the sealing performance between the mounting seat 31 and the mounting portion 321.

[0073] like Figure 6 and Figure 7 As shown, the atomization ablation device includes a working fluid input port 101 and a disinfection component (not shown in the figure). The liquid inlet passage 10 connects the working fluid input port 101 and the liquid storage tank 1 to replenish the working fluid in the liquid storage tank 1. The disinfection component is arranged at the working fluid input port 101 to disinfect the working fluid in the liquid inlet passage 10 to avoid biological infection.

[0074] In one embodiment, the disinfection component includes an ultraviolet disinfection component, which disinfects the working fluid entering the atomization ablation device by ultraviolet rays. The ultraviolet irradiation disinfection method is safe and simple and does not contain other additives. In other embodiments, other disinfection methods can also be used to disinfect the working fluid, such as ultrasonic disinfection.

[0075] like Figure 6 and Fig. 9As shown, the driving assembly 22 includes a driving motor 221, a transmission screw 222, a driving slider 223 and a guide rail 224, wherein the driving motor 221 is connected to the driving motor 221; the driving slider 223 is fixedly arranged on the piston 21 and is screwed with the transmission screw 222, and is slidably arranged on the guide rail 224; the piston 21 is a cylindrical structure with an open upper end, and one end of the transmission screw 222 is extended and arranged in the piston 21. The rotational motion of the driving motor 221 and the transmission screw is converted into a linear motion and guidance is provided to achieve stable and high-precision motion of the piston 21. At the same time, the driving slider 223 is ensured to stably perform linear motion through the cooperation with the guide rail 224, thereby improving the control accuracy of the liquid output of the liquid storage tank 1. In terms of overall layout, in this embodiment, the liquid storage tank 1, the piston 21 and the transmission screw 222 are arranged in a vertical direction, the driving motor 221 is located above the transmission screw 222 and the two are connected to each other through a coupling.

[0076] like Figure 6 As shown, the driving assembly 22 further includes a stopper 225 , which is disposed at both ends of the guide rail 224 to limit the movement stroke of the slider.

[0077] like Figure 6 As shown, the driving component 22 also includes a position sensor 226 and a trigger member 227. The position sensor 226 is arranged on the guide rail 224, and the trigger member 227 is arranged on the driving slider 223. When the driving slider 223 moves to the position of the position sensor 226, the trigger member 226 senses the position sensor 227, so that the position sensor 226 can obtain the moving position of the driving slider 223, and then obtain the liquid storage amount of the liquid storage tank 1, so as to accurately control the liquid output.

[0078] like Fig. 9 As shown, the drive assembly 22 also includes a first seal 23, and the first seal 23 cooperates with the piston 21 to seal the upper half of the liquid storage tank 1 to prevent leakage during the movement of the piston 21. In one embodiment, the first seal 23 is fixedly arranged on the top of the liquid storage tank 1, and the piston 21 and the first seal 23 are slidably sealed. Of course, in other embodiments, the first seal 23 can also be arranged on the piston 21 and located inside the liquid storage tank 1, and can slide with the piston 21 relative to the liquid storage tank 1, so as to achieve dynamic sealing between the piston 21 and the liquid storage tank 1.

[0079] like Figure 1 and Figure 4As shown, the atomization ablation device includes a housing 14 and a frame 13. The frame 13 is arranged in the housing 14. The frame 13 includes a mounting platform 131 and a stand 132. The mounting platform 131 is used to carry and install pipes and components of various channels such as the converging channel 6 and the drainage channel 9. The stand 132 is vertically arranged on the mounting platform 131, and the mounting platform 131 is divided into a pipeline area and an electrical area. The temperature control component 3, the output component 2 and the liquid storage tank 1 are arranged in the electrical area, and various pipelines are arranged in the pipeline area to avoid interference between the pipelines and the electrical appliances. The guide rail 224 is installed on the stand 132 to ensure a stable installation.

[0080] Preferably, Figure 4 As shown, the atomization ablation device further includes a switching power supply 15, which is connected to an external power supply and converts the standard voltage of the external power supply into the voltage or current required by the atomization ablation device.

[0081] like Figure 4 As shown, the atomization ablation device includes a heat dissipation fan 16, which is arranged on two opposite sides of the mounting platform. The two heat dissipation fans 16 form convection wind to heat the inside of the atomization ablation device.

[0082] Based on the above-mentioned atomization ablation device, its usage process is introduced in detail:

[0083] S100, replenishing working fluid into the liquid storage tank 1;

[0084] S200, controlling the temperature control component 3 to heat the working medium in the liquid storage tank 1 until the target disinfection temperature is reached. Usually the target disinfection temperature is greater than 100°C, and the preferred target disinfection temperature is set to 100°C.

[0085] S300, the working fluid that has reached the target disinfection temperature is transported to the handle 4 to disinfect the handle 4 and then refluxed and discharged from the atomized ablation device. Specifically, the liquid outlet valve 111 on the liquid outlet passage 11 is opened, and the piston 21 is pushed into the liquid storage tank 1 to provide positive pressure, so that the working fluid is output from the liquid outlet 1002 to the positive pressure pipeline 43 of the handle 4 and reaches the injection head 42 for disinfection. The disinfected working fluid is transported to the negative pressure pipeline 44 through the connecting channel 451 in the dust cover 45 and discharged from the atomized ablation device through the reflux passage and the confluence passage 6. Since the interventional catheter is a disposable item, it is not necessary to disinfect the interventional catheter. Only the inside of the handle 4 needs to be disinfected, especially the docking position between the injection head 42 and the interventional catheter.

[0086] S400, replenishing the working fluid into the liquid storage tank 1 and exhausting the gas in the liquid storage tank 1. Specifically, after the handle 4 is disinfected, the working fluid is continued to be replenished into the liquid storage tank 1, and the air in the liquid storage tank 1 is exhausted until the bubble sensor 72 detects liquid, closes the bubble detection method and the exhaust valve 74, and completes the exhaust process.

[0087] S500, control the temperature control component 3 to heat the working medium in the liquid storage tank 1 until the preheating temperature is reached. Specifically, the preheating temperature value is set, and the temperature control component 3 preheats the working medium in the liquid storage tank 1 to the preheating temperature quickly. For example, when the target atomization temperature is 60-80°C, the preheating temperature is set to 40°C. By preheating the working medium, the heating power of the temperature control component 3 can be adjusted according to the actual target atomization temperature for further heating, which is conducive to shortening the overall heating process and improving the atomization efficiency.

[0088] S600, controlling the temperature control component 3 to heat the working medium in the liquid storage tank 1 until the target atomization temperature is reached. Specifically, when surgery is required, the working medium that has reached the preheating temperature is further heated until the target atomization temperature, for example, 60-80°C, is reached.

[0089] S700, the working fluid that has reached the target atomization temperature is delivered to the interventional catheter at the front end of the handle 4 through the handle 4 to preheat the interventional catheter, and the preheated working fluid is controlled to flow back and be discharged from the atomization ablation device. Specifically, in order to ensure the precise control of the atomization temperature, considering the energy loss caused by the working fluid being delivered from the front end of the handle 4 to the atomization structure in the interventional catheter, the interventional catheter is preheated before the operation. The dust cover 45 at the front end of the handle 4 is opened, the interventional catheter is connected, the liquid outlet valve 111 on the liquid outlet passage 11 is opened, and the working fluid that has reached the target atomization temperature is passed into the handle 4 through the positive pressure pipeline 43 in the handle 4 and delivered to the interventional catheter from the irrigation head 42. After the preheating is completed, the negative pressure pump 51 and the reflux valve 52 are opened to connect the negative pressure passage and the confluence passage 6, and the preheated working fluid in the interventional catheter is confluenced to the confluence passage 6 through the negative pressure pipeline 44 and discharged from the main discharge port 62, so as to avoid the output of a section of high-temperature steam to the outside before the operation, thereby improving the work efficiency.

[0090] S800, transporting the working fluid that has reached the target atomization temperature to the intervention catheter at the front end of the handle 4 through the handle 4 to be atomized and emit mist;

[0091] S900 , after the mist is discharged, the liquid discharge passage 9 is opened to discharge the remaining working fluid in the liquid storage tank 1 .

[0092] Embodiment 2

[0093] Figures 11 to 14 This is a fluid flow diagram of the temperature-adjustable atomization ablation device in Example 2 of the present application. Example 2 is an alternative solution based on Example 1. The difference is that the atomization principle adopted by the atomization ablation device in Example 2 is to achieve liquid atomization through high-speed mixing and impact of gas and liquid. Compared with the device in Example 1, the atomization ablation device in this embodiment is

[0094] like Fig.11 , Fig.12 , Fig.14As shown, the atomization ablation device in this embodiment only adds an air inlet passage 12, an air pump 121, and an exhaust solenoid valve 122. Other structures and their connection relationships and positional relationships are the same as those in the first embodiment and will not be repeated here.

[0095] In this embodiment, if Fig.13 As shown, the handle 4 also includes an air intake pipeline, which is connected to the air intake passage 12 and the injection head 42 respectively and intakes air. The handle 4 simultaneously injects gas and liquid working medium into the interventional catheter and atomizes through the atomization structure in the interventional catheter. The exhaust solenoid valve 122 is arranged on the air intake passage 12 to control the air intake passage 12 to be connected with the air intake pipeline and / or the gas storage tank 73.

[0096] like Fig.12 and Fig.14 As shown, in the present embodiment, the emptying passage 7 and the liquid discharge passage 9 are respectively connected to the liquid storage tank 1, and the air intake passage 12 is connected to the gas storage tank 73. After the operation is completed, when it is necessary to supply air to the liquid storage tank 1 to discharge the waste liquid in the liquid storage tank 1, the exhaust solenoid valve 122 controls the air intake passage 12 to open, and the air intake passage 12 introduces gas into the liquid storage tank 1 through the gas storage tank 73 and the emptying passage 7 to discharge the working fluid remaining in the gas storage tank 73 through the liquid discharge passage 9.

[0097] The air intake passage 12 is also provided with a pressure regulating valve 123 , which is arranged between the air pump 121 and the exhaust solenoid valve 122 , and is used to regulate the air pressure output by the air pump 121 to ensure stable air pressure output.

[0098] like Fig.11 and Fig.12 As shown, an air pressure detection component 124 is also provided on the air inlet passage 12 between the air pump 121 and the handle 4, which is used to monitor the pressure of the gas introduced into the handle 4, so as to adjust the air pressure of the introduced gas in time, adjust the particle size of the atomized particles and the mist outlet speed, etc.

[0099] In the present application, unless otherwise clearly specified and limited, a first feature being “on” or “under” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature via an intermediate medium.

[0100] Moreover, the first feature being “above”, “above”, and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being “below”, “below”, and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0101] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A temperature-adjustable atomization ablation device, characterized in that: include: A liquid storage tank, used to contain the working fluid to be atomized; A temperature control assembly, comprising a temperature control element, wherein the temperature control element is disposed in the liquid storage tank and is used to heat the working medium in the liquid storage tank; An output assembly, comprising a piston slidably disposed in the liquid storage tank and a driving assembly for driving the piston to move; The handle includes an infusion pipeline, which is respectively connected to the liquid storage tank and the interventional catheter and is used to transport the working medium in the liquid storage tank to the interventional catheter for atomization; The negative pressure reflux passage is connected to the infusion pipeline and is used to cause the fluid input into the infusion pipeline to flow back to the negative pressure reflux passage for discharge through negative pressure.

2. The atomization ablation device according to claim 1, characterized in that: The atomization ablation device comprises a confluence passage, a confluence piece and a main drain port. Two ends of the confluence passage are respectively connected to the confluence piece and the main drain port for confluence and draining the fluid discharged from the inside of the atomization ablation device.

3. The atomization ablation device according to claim 2, characterized in that: The atomization ablation device comprises a reflux valve, a negative pressure pump and a one-way valve which are sequentially arranged on the negative pressure reflux path along the fluid discharge direction, wherein the negative pressure pump is used to provide negative pressure for the negative pressure reflux path; Two ends of the negative pressure reflux passage are respectively communicated with the infusion pipeline and the converging passage.

4. The atomization ablation device according to claim 2, characterized in that: The handle includes an injection head, and the infusion pipeline includes a positive pressure pipeline and a negative pressure pipeline. The injection head is used to connect and communicate with the interventional catheter. An infusion port and a reflux port are provided on the injection head. The liquid storage tank has a liquid outlet. The positive pressure pipeline is respectively communicated with the infusion port and the liquid outlet. The negative pressure pipeline can be communicated with the positive pressure pipeline through the reflux port and the infusion port, and the negative pressure pipeline is communicated with the negative pressure reflux circuit.

5. The atomization ablation device according to claim 2, characterized in that: The atomization ablation device includes an emptying passage and a bubble detection valve, a bubble sensor, and an exhaust valve arranged in sequence on the emptying passage. The liquid storage tank is vertically arranged, and the emptying passage is connected to the top of the liquid storage tank and the confluence passage. The gas discharged from the liquid storage tank passes through the bubble detection valve, the bubble sensor, and the exhaust valve in sequence and then is discharged through the confluence passage.

6. The atomization ablation device according to claim 5, characterized in that: The atomization ablation device further comprises an air storage tank, which is arranged on the exhaust passage and located between the bubble sensor and the exhaust valve.

7. The atomization ablation device according to claim 2, characterized in that: The atomization ablation device also includes: A liquid discharge passage, connected to the liquid storage tank and the confluence passage, for discharging waste liquid in the liquid storage tank, wherein a pressure sensor and a drain valve are sequentially arranged on the liquid discharge passage along the fluid flow direction; The pressure relief passage is connected with the liquid storage tank and the confluence passage and is used for regulating the pressure in the liquid storage tank. The pressure relief passage is provided with a pressure relief valve for controlling the on-off of the pressure relief passage.

8. The atomization ablation device according to any one of claims 1 to 7, characterized in that: The liquid storage tank is arranged vertically; The temperature control component also includes a mounting seat, in which a temperature control cavity is provided along the circumferential axial direction of the mounting seat, and the temperature control component includes a positioning mounting portion and a heating portion, the positioning mounting portion is sealed and connected to the mounting seat, the heating portion is located in the temperature control cavity and forms an annular heating gap with the cavity wall of the temperature control cavity, the mounting seat is arranged at the bottom of the liquid storage tank and is connected to the liquid storage tank, and the working medium in the liquid storage tank flows into the heating gap for heating; The liquid storage tank is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are arranged on the circumferential side wall of the mounting seat and are communicated with the annular heating gap.

9. The atomization ablation device according to any one of claims 1 to 7, characterized in that: The drive assembly comprises: Drive motor; A transmission screw connected to the drive motor; A driving slider is fixedly arranged on the piston and threadedly connected to the transmission screw. The piston is a cylindrical structure with an open upper end. One end of the transmission screw extends and is arranged in the piston. A guide rail is provided on which the driving slider is slidably arranged.

10. The atomization ablation device according to any one of claims 1 to 7, characterized in that: The atomization ablation device includes a liquid inlet passage, a working fluid input port, and a disinfection component. The liquid inlet passage connects the working fluid input port and the liquid storage tank to replenish the working fluid in the liquid storage tank. The disinfection component is arranged at the working fluid input port to disinfect the working fluid input into the liquid inlet passage.

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