Liquid medium circulation device and ablation system
By manually controlling the piston rod through the injection and recovery components in the liquid medium circulation device, precise depressurization and drainage of the balloon are achieved, solving the problems of inconsistent flow rate and bubble formation of the peristaltic pump, and improving the stability and safety of the ablation system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN PULSECARE MEDICAL TECH CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-16
AI Technical Summary
In existing technologies, the flow rate of peristaltic pumps is inconsistent when rotating forward and backward, which affects the balloon pressure and easily generates air bubbles, leading to damage to the blood vessel wall and unstable ablation effect. The complex structure also requires regular maintenance.
By employing injection and recovery components, and through manual control of the axial movement of the piston rod, precise depressurization and fluid drainage of the balloon can be achieved, avoiding bubble formation, simplifying the structure, and reducing maintenance requirements.
This achieves stable balloon pressure, reduces the risk of air bubbles, improves the reliability and safety of the ablation system, and lowers maintenance costs.
Smart Images
Figure CN224357667U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and in particular to a liquid medium circulation device and an ablation system. Background Technology
[0002] Ultrasonic ablation is a device-based therapy that uses ablation to reduce blood pressure by ablating the renal sympathetic nerves distributed around the renal artery lumen. The ablation device typically consists of an ablation catheter and a balloon. The ablation structure of the catheter is located within the balloon and is used to ablate and remove the nerve. During a single ablation procedure, the balloon is released from the vascular sheath, inflated after being injected with a medium, and the ablation structure within the balloon cools down through the circulating medium (e.g., water), thus better converting electrical energy into acoustic energy for nerve ablation. During a single procedure, the ablation catheter needs to be repositioned multiple times within the blood vessel to ablate different target points. Because the balloon filled with medium is larger than the vascular sheath, directly moving an undepressurized balloon can easily damage the vessel wall. To accommodate the movement and adjustment of the ablation catheter, the balloon needs to inflate and deflate multiple times. In related technologies, a peristaltic pump is used to inflate and deflate the balloon; the pump injects the medium into the balloon when rotating forward and expels the medium when rotating backward. Due to response delays or the condition of the piping (e.g., hoses), there is a risk of inconsistent flow rates when the same peristaltic pump is rotating in both forward and reverse directions, affecting the flow rates of the injected and discharged media, and consequently the balloon pressure. Utility Model Content
[0003] In some embodiments, this application provides a liquid medium circulation device, comprising:
[0004] balloon;
[0005] An injection assembly is provided, which is connected to the balloon via a liquid inlet line. The injection assembly is used to control the entry of a liquid medium into the balloon in order to control the inflation of the balloon.
[0006] The recovery assembly includes a recoverer and a suction device. The recoverer and the balloon are connected by a recovery conduit, which is unidirectional. The suction device is connected to the recovery conduit and includes a suction tube and a piston rod axially movable within the suction tube. The suction tube has a connecting port to the recovery conduit. The piston rod has a blocking state that seals the connecting port and a suction state that moves axially to form a reservoir with negative pressure. The reservoir is connected to the connecting port.
[0007] Optionally, the recovery assembly further includes a first one-way valve and a second one-way valve, which are connected to the recovery pipeline and located on both sides of the aspirator, respectively.
[0008] Optionally, the recovery assembly further includes a three-way valve disposed in the recovery pipeline. The three-way valve includes a first interface, a second interface, and a third interface, wherein any two of the first interface, the second interface, and the third interface are connected. The first interface and the second interface are connected to the recovery pipeline, and the third interface is connected to the suction device.
[0009] Optionally, the injection assembly includes an injection container and an infusion pump, one end of the inlet line is connected to the injection container and the other end is connected to the balloon, and the infusion pump is disposed in the inlet line.
[0010] Optionally, the injection assembly further includes a clamp valve disposed in the inlet line and located between the injection container and the injection pump.
[0011] Optionally, the injection assembly includes a third check valve connected to the inlet line.
[0012] Optionally, the injection assembly includes an injection container and an infusion pump, one end of the inlet line is connected to the injection container and the other end is connected to the balloon, the infusion pump is disposed in the inlet line, and the third one-way valve is located between the infusion pump and the balloon.
[0013] Optionally, the liquid medium circulation device further includes a hydraulic sensor for detecting the internal pressure of the balloon.
[0014] Optionally, the hydraulic sensor is disposed in the inlet pipeline.
[0015] Optionally, the liquid medium circulation device further includes a bubble sensor for detecting bubbles in the liquid medium.
[0016] Optionally, the injection assembly includes a perfusion pump, the bubble sensor is disposed in the inlet line, and the bubble sensor is communicatively connected to the perfusion pump.
[0017] Optionally, the end of the recycling pipeline is a flexible hose, which is inserted into the recycling unit.
[0018] In other embodiments, this application also provides an ablation system, comprising:
[0019] A liquid medium circulation device, comprising:
[0020] balloon;
[0021] An injection assembly for controlling the entry of a liquid medium into the balloon to control the inflation of the balloon;
[0022] A recovery assembly includes a recoverer and a suction device. The recoverer and the balloon are connected by a recovery tubing, which is unidirectional. The suction device is connected to the recovery tubing and includes a suction tube and a piston rod axially movable within the suction tube. The suction tube has a connection port to the recovery tubing. The piston rod has a blocking state that seals the connection port and a suction state that moves axially to form a reservoir with negative pressure. The reservoir is connected to the connection port.
[0023] as well as,
[0024] A support catheter, the distal end of which is sealed to the proximal end of the balloon;
[0025] An energy emitter is disposed within the balloon.
[0026] Optionally, the support conduit has an inlet, a through port, and an outlet that are interconnected. The inlet is connected to the inlet line of the injection assembly, the outlet is connected to the recovery line, and the through port is connected to the balloon.
[0027] This application provides a liquid medium circulation device in some embodiments, including a balloon, an injection assembly, and a recovery assembly. The injection assembly and the balloon are connected via an inlet pipe. The injection assembly controls the entry of liquid medium into the balloon to control its inflation. The recovery assembly includes a recoverer and a suction device, connected to the balloon via a recovery pipe. The recovery pipe is unidirectional. The suction device is connected to the recovery pipe and includes a suction tube and a piston rod axially movable within the suction tube. The suction tube has a connection port to the recovery pipe and a liquid storage chamber connected to the connection port. The piston rod has a blocking state (sealing the connection port) and a suction state (moving axially to form a negative pressure liquid storage chamber). The liquid storage chamber is connected to the connection port. When pressure relief is needed for the balloon, pulling the piston rod moves it axially away from the connection port, creating a negative pressure reservoir. The piston rod in suction mode generates suction force, drawing at least some of the liquid from the balloon into the reservoir, causing the balloon to depressurize and contract. Then, pushing the piston rod axially towards the connection port seals the liquid, forcing it to flow through the connection port into the recovery line. Since the recovery line is unidirectional, the liquid flows to the recovery unit. The suction device's operation is manually controllable, requiring no additional power source. Its simple structure and ease of use eliminate the need for regular maintenance, saving downtime and costs. Furthermore, by controlling the axial movement of the piston rod, the volume of the reservoir can be precisely controlled, allowing for precise control of the flow rate of the liquid discharged from the balloon, maintaining a stable pressure with each balloon inflation. Moreover, the liquid suctioned by the device flows to the recovery unit, preventing recirculation back into the balloon and reducing the risk of air bubbles in the liquid.
[0028] The ablation system provided in some embodiments of this application includes a liquid medium circulation device. The liquid medium circulation device depressurizes the balloon through a suction device. The action of the suction device can be manually controlled, without the need for an additional power source. It has a simple structure, is easy to use, does not require regular maintenance, saves downtime and costs, maintains stable balloon pressure, reduces the risk of air bubbles entering the balloon, and improves the reliability and safety of the ablation system. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the ablation system provided in this application in one embodiment;
[0030] Figure 2 This is a schematic diagram of a portion of the structure of the ablation system provided in this application;
[0031] Figure 3 This is a schematic diagram of another embodiment of the ablation system provided in this application.
[0032] In the picture:
[0033] 1. Balloon; 2. Injection assembly; 21. Inlet line; 22. Injection container; 23. Infusion pump; 24. Pinch valve; 25. Third check valve;
[0034] 3. Recycling component; 31. Recycler; 32. Suction device; 32a. Suction tube; 32b. Piston rod; 32c. Connecting port; 33. Recycling pipeline; 34. First check valve; 35. Second check valve; 36. Three-way valve; 36a. First interface; 36b. Second interface; 36c. Third interface;
[0035] 4. Hydraulic sensor; 5. Bubble sensor;
[0036] 10. Supporting conduit; 10a. Liquid inlet; 10b. Through port; 10c. Liquid outlet; 20. Energy emitter. Detailed Implementation
[0037] It should be understood that the examples and illustrations in this application are for illustrative purposes, and deviations and variations can be constructed and deployed based on the teachings of this application without departing from the scope of this application. Before detailing at least one embodiment of this application, it should be understood that this application is not necessarily limited to the detailed configuration and arrangement of the components and / or methods set forth in the following description and / or illustrated in the drawings and / or embodiments. This application can have other embodiments or can be practiced or implemented in different ways.
[0038] Unless otherwise defined, all technical and / or scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. While similar or equivalent methods and materials described in this application may be used to practice or test embodiments of this application, exemplary methods and / or materials are described below. In the event of any conflict, the specification (including definitions) of this application shall prevail. Furthermore, these materials, methods, and embodiments are illustrative only and are not intended to impose any necessary limitations.
[0039] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, the terms "first," "second," etc., are used merely for descriptive distinction and have no special meaning.
[0040] In this application, the distal end refers to the end of the device and at least some of the components constituting the device that are exemplarily far from the operator during use (or, the distal end refers to the end of the device and at least some of the components constituting the device that exemplarily first contact / intervene with biological tissue when used on a living organism), and the proximal end refers to the end of the device and at least some of the components constituting the device that are exemplarily close to the operator during operation (or, the proximal end refers to the end of the device and at least some of the components constituting the device that are exemplarily farther from biological tissue than the distal end when used on a living organism).
[0041] Transcatheter renal sympathectomy (RDN) is a device-based therapy that ablates the renal sympathetic nerves distributed around the renal artery lumen to lower blood pressure. The ablation device used in RDN typically consists of an ablation catheter and a balloon. The ablation structure of the catheter is located within the balloon, rotating within it to ablate and remove the nerve. During a single ablation procedure, the balloon is released from the vascular sheath. After inflation with injected medium, the balloon either contacts the vessel wall or remains in contact with it. The ablation structure within the balloon cools down as the medium circulates, effectively converting electrical energy into acoustic energy for nerve ablation. During a single procedure, the ablation catheter needs to be repositioned multiple times within the vessel to ablate different target points. Because the balloon filled with medium is larger than the vascular sheath, directly moving an undepressurized balloon can easily damage the vessel wall. Therefore, the balloon needs to be depressurized and contracted back into the vascular sheath before being withdrawn through the sheath. To accommodate the movement and adjustment of the ablation catheter, the balloon needs to inflate and contract repeatedly. In related technologies, a peristaltic pump is used to inflate and contract the balloon; the pump injects the medium into the balloon when rotating forward and expels the medium when rotating backward. However, due to response delays or the condition of the tubing (e.g., flexible tubing), there is a risk of inconsistent flow rates during forward and reverse rotation of the same peristaltic pump, affecting the flow rates of the injected and expended media, and consequently, the balloon pressure. Furthermore, the peristaltic pump is connected to an injection bag; the medium aspirated during reverse rotation is returned to the injection bag for reuse. During reverse rotation, excessively high local negative pressure may occur, causing some of the medium to vaporize and generate bubbles, affecting the ablation effect. In addition, the peristaltic pump has a complex structure, and wear is accelerated during forward and reverse rotation, thus requiring regular maintenance, increasing downtime and costs.
[0042] To solve at least one of the above problems, refer to Figure 1 , Figure 1This is a schematic diagram of the ablation system provided in at least one embodiment of this application, including a liquid medium circulation device. At least one embodiment of this application provides a liquid medium circulation device, which includes a balloon 1, an injection component 2, and a recovery component 3. The injection component 2 and the balloon 1 are connected via a liquid inlet pipe 21. The injection component 2 controls the entry of liquid medium into the balloon 1 to control the inflation of the balloon 1. The recovery component 3 includes a recovery unit 31 and a suction unit 32, which are connected to the balloon 1 via a recovery pipe 33. The recovery pipe 33 is unidirectional. The suction unit 32 is connected to the recovery pipe 33. The suction unit 32 includes a suction tube 32a and a piston rod 32b axially movable within the suction tube 32a. The suction tube 32a has a connecting port 32c that connects to the recovery pipe 33. The suction tube 32a has a liquid storage chamber connected to the connecting port 32c. The piston rod 32b has a blocking state that blocks the connecting port 32c and a suction state that moves axially to form a liquid storage chamber with negative pressure. The liquid storage chamber is connected to the connecting port 32c.
[0043] In some embodiments, when it is necessary to depressurize the balloon 1, the piston rod 32b is pulled to move axially away from the connecting port 32c, thereby forming a liquid storage chamber with negative pressure. The piston rod 32b in the suction state generates suction force, and at least part of the liquid medium inside the balloon 1 enters the liquid storage chamber, causing the balloon 1 to depressurize and contract. Then, the piston rod 32b is pushed again to move axially towards blocking the connecting port 32c, thereby squeezing the liquid medium in the liquid storage chamber to flow through the connecting port 32c to the recovery pipe 33. Since the recovery pipe 33 is unidirectional, the liquid medium flows through the recovery pipe 33 to the recovery device 31. The operation of the suction device 32 can be manually controlled, requiring no additional power source. It has a simple structure, is easy to use, reduces or even eliminates the need for regular maintenance, and saves downtime and costs. Moreover, by controlling the axial movement distance of the piston rod 32b, the volume of the liquid storage chamber can be precisely controlled, thereby allowing for more precise control of the flow rate of the liquid medium discharged from the balloon 1, maintaining a stable pressure with each inflation of the balloon 1. Furthermore, the liquid medium aspirated by the suction device 32 is discharged to the recovery device 31, avoiding circulation back to the balloon 1 and reducing the risk of air bubbles in the liquid medium inside the balloon 1.
[0044] In some embodiments, the aspirator 32 may be a disposable syringe, which can reduce costs and is convenient to use, requiring no additional sterilization. This application does not limit the specific composition of the liquid medium.
[0045] In some embodiments, the recovery assembly 3 further includes a first one-way valve 34 and a second one-way valve 35, which are connected to the recovery pipeline 33 and located on opposite sides of the suction device 32. The first one-way valve 34 and the second one-way valve 35 enable unidirectional flow of the recovery pipeline 33.
[0046] In some embodiments, upon initial use, the liquid medium circulation device can execute an venting command to empty the gas inside the device. At this time, the piston rod 32b forms a sealing state, continuously injecting liquid medium into the balloon 1. After the balloon 1 is inflated, excess liquid medium flows sequentially through the first one-way valve 34 and the second one-way valve 35, and then flows to the recovery unit 31. When the piston rod 32b is in the suction state, due to the presence of the second one-way valve 35, the negative pressure storage chamber only suctions the liquid medium from the balloon 1 and the upstream pipeline of the suction device 32, preventing backflow of liquid medium in the recovery unit 31. When the piston rod 32b discharges liquid medium from the storage chamber, due to the presence of the first one-way valve 34, backflow of the discharged liquid medium into the balloon 1 is prevented. It should be noted that "upstream" here refers to the direction of liquid medium flow.
[0047] In other embodiments, the recovery assembly 3 further includes a three-way valve 36 disposed in the recovery pipeline 33 to replace the first one-way valve 34 and the second one-way valve 35 to achieve unidirectional flow of the recovery pipeline 33, such as... Figure 2 As shown. The three-way valve 36 includes a first port 36a, a second port 36b, and a third port 36c. Any two of the three ports 36a, 36b, and 36c are connected. The first port 36a and the second port 36b are connected to the recovery pipeline 33, and the third port 36c is connected to the suction device 32.
[0048] In some embodiments, when the liquid medium circulation device executes the venting command, the first interface 36a and the second interface 36b are connected while the third interface 36c is closed, continuously injecting liquid medium into the balloon 1. After the balloon 1 is inflated, the excess liquid medium flows sequentially through the first interface 36a and the second interface 36b and flows to the recovery unit 31. When the piston rod 32b is in the suction state, the first interface 36a and the third interface 36c are connected while the second interface 36b is closed. The negative pressure reservoir only suctions the liquid medium from the balloon 1 and the upstream pipeline of the suction device 32, preventing backflow of the liquid medium in the recovery unit 31. When the piston rod 32b discharges the liquid medium from the reservoir, the third interface 36c and the second interface 36b are connected while the first interface 36a is closed, preventing the discharged liquid medium from flowing back into the balloon 1.
[0049] In other embodiments, the injection assembly 2 includes an injection container 22 and an injection pump 23. The injection container 22 contains the liquid medium to be used. One end of the inlet pipe 21 is connected to the injection container 22, and the other end is connected to the balloon 1. The injection pump 23 is disposed in the inlet pipe 21. When the injection pump 23 is working, it draws the liquid medium from the injection container 22 and injects it into the balloon 1. By using the injection pump 23, the flow rate of the liquid medium injected into the balloon 1 is precisely controlled, thereby making the working pressure of the balloon 1 stable and reliable.
[0050] The injection assembly 2 also includes a pinch valve 24, which is disposed in the inlet line 21 and located between the injection container 22 and the filling pump 23. The pinch valve 24 can disconnect the connection between the injection container 22 and the inlet line 21. When depressurizing the balloon 1, the pinch valve 24 remains closed while the filling pump 23 is shut off, reducing the flow of liquid medium in the inlet line 21 and facilitating the rapid response of the balloon 1 in depressurization.
[0051] In other embodiments, the injection assembly 2 further includes a third check valve 25, which is connected to the liquid inlet line 21, so that the liquid inlet line 21 has one-way permeability and reduces the risk of liquid medium backflow.
[0052] Optionally, a third check valve 25 is located between the injection pump 23 and the balloon 1 to reduce the risk of liquid medium flowing to the injection pump 23 when the balloon 1 is depressurized.
[0053] In some embodiments, the liquid medium circulation device further includes a hydraulic sensor 4, which is used to detect the internal pressure of the balloon 1. The internal pressure of the balloon 1 can be measured relatively accurately through the detection of the hydraulic sensor 4. When the suction device 32 depressurizes the balloon 1, it can observe the detection data of the hydraulic sensor 4 and stop when the actual pressure of the balloon 1 reaches a preset pressure, at which point the balloon 1 has completed depressurization.
[0054] Optionally, the hydraulic sensor 4 is installed in the inlet pipe 21. Since the inlet pipe 21 and the balloon 1 are connected, the pressure value detected by the hydraulic sensor 4 on the inlet pipe 21 is the internal pressure of the balloon 1.
[0055] The liquid medium circulation device also includes a bubble sensor 5, which is used to detect bubbles in the liquid medium. Bubbles in the liquid medium can affect the ablation effect. The presence of bubbles in the liquid medium can be monitored in real time by the detection of the bubble sensor 5.
[0056] Optionally, the bubble sensor 5 is installed in the liquid inlet line 21 and is communicatively connected to the infusion pump 23. When the infusion pump 23 injects liquid medium into the balloon 1, if the bubble sensor 5 detects the presence of bubbles in the liquid medium, it sends a communication signal to the infusion pump 23, and the infusion pump 23 stops working.
[0057] In some embodiments, the end of the recovery line 33 is a flexible hose, which is inserted into the recovery unit 31. The hose is flexible and easy to adjust its orientation to align with the recovery unit 31.
[0058] In other embodiments, this application also provides an ablation system, including the aforementioned liquid medium circulation device, support catheter 10, and energy emitter 20. The distal end of the support catheter 10 and the proximal end of the balloon 1 are sealed together; the energy emitter 20 is disposed inside the balloon 1, as shown below. Figure 3 As shown, the liquid medium inside the balloon 1 can provide a cooling effect for the energy emitter 20 during operation.
[0059] The liquid medium circulation device includes a balloon 1, an injection assembly 2, and a recovery assembly 3. The injection assembly 2 and the balloon 1 are connected via a liquid inlet pipe 21. The injection assembly 2 controls the entry of the liquid medium into the balloon 1 to control its expansion. At this time, the energy emitter 20 can output energy to ablate the target point. The recovery assembly 3 includes a recoverer 31 and a suction device 32. The recoverer 31 and the balloon 1 are connected via a recovery pipe 33, which is unidirectional. The suction device 32 is connected to the recovery pipe 33 and includes a suction tube 32a and a piston rod 32b axially movable within the suction tube 32a. The suction tube 32a has a connecting port 10b that connects to the recovery pipe 33. The suction tube 32a contains a liquid storage chamber connected to the connecting port 10b. The piston rod 32b has a blocking state (blocking the connecting port 10b) and a suction state (moving axially to form a negative pressure liquid storage chamber). The liquid storage chamber is connected to the connecting port 10b. When the energy emitter 20 changes target location and shifts, the balloon 1 needs to be depressurized. This pulls the piston rod 32b, causing it to move axially away from the connecting port 10b, thus forming a negative pressure liquid storage chamber. The piston rod 32b in the suction state generates suction force, and at least part of the liquid medium inside the balloon 1 enters the liquid storage chamber, causing the balloon 1 to depressurize and contract. At this time, the balloon 1 can be moved.
[0060] Then, the piston rod 32b is pushed to move axially toward the sealing port 10b, thereby squeezing the liquid medium in the reservoir cavity to flow through the port 10b to the recovery pipe 33. Since the recovery pipe 33 is unidirectional, the liquid medium flows to the recovery unit 31 through the recovery pipe 33. The action of the aspirator 32 can be manually controlled, requiring no additional power source. It has a simple structure, is easy to use, and does not require regular maintenance, saving downtime and costs. Moreover, by controlling the axial movement distance of the piston rod 32b, the volume of the reservoir cavity can be precisely controlled, thereby allowing for more precise control of the flow rate of the liquid medium discharged from the balloon 1. The balloon 1 maintains a stable pressure with each inflation. Furthermore, the liquid medium aspirated by the aspirator 32 is discharged to the recovery unit 31, avoiding circulation back to the balloon 1, reducing the risk of air bubbles in the liquid medium inside the balloon 1, and improving the reliability and safety of the ablation system.
[0061] In some embodiments, the support conduit 10 has an inlet 10a, a through port 10b, and an outlet 10c that are interconnected. The inlet 10a is connected to the inlet conduit 21, the outlet 10c is connected to the recovery conduit 33, and the through port 10b is connected to the balloon 1.
[0062] Whenever a range of values is indicated in this application, it refers to any of the listed values (fractions and integers) that fall within the indicated range. The phrases “range between the first indicated value and the second indicated value” and “range from the first indicated value to the second indicated value” are used interchangeably in this application and refer to the values indicated by the first and second indications, as well as all fractional and integer values in between.
[0063] As used herein, when used in conjunction with numerical values and / or ranges, the terms “about” and / or “approximately” generally refer to those numerical values and / or ranges that are close to the stated numerical value and / or range. In some cases, the terms “about” and “approximately” may mean within ±10% of the stated value. For example, in some cases, “about 100 [units]” may mean within ±10% of 100 (e.g., 90 to 110). The terms “about” and “approximately” may be used interchangeably.
[0064] As used in this application, the singular forms “an,” “a,” and “the” include the plural forms unless the context clearly specifies otherwise. For example, the terms “a compound” or “at least one compound” can include a variety of compounds, including mixtures thereof.
[0065] The term "basically composed of" means that the composition, method, or structure may include additional ingredients, steps, and / or components, provided that these additional ingredients, steps, and / or components do not significantly alter the fundamental and novel properties of the claimed composition, method, or structure.
[0066] The implementation of the methods and / or systems of this application may include performing or fully performing selected tasks manually, automatically, or in a combination thereof. Furthermore, the actual instruments and equipment used in the implementation of the methods and / or systems of this application, using an operating system, may implement several selected tasks via hardware, software, firmware, or a combination thereof.
[0067] For example, the hardware used to perform the selected task according to embodiments of this application can be implemented in the form of a chip or circuit. As software, the selected task according to embodiments of this application can be implemented in the form of multiple software instructions executable by a computer using any suitable operating system. In exemplary embodiments of this application, one or more tasks of exemplary embodiments of the methods and / or systems according to this application are performed by a data processor, such as a computing platform for executing multiple instructions. Optionally, the data processor includes volatile memory for storing instructions and / or data and / or non-volatile memory for storing instructions and / or data, such as a magnetic hard disk and / or removable media. Optionally, a network connection is also provided. A display and / or user input devices such as a keyboard or mouse are also optionally provided.
[0068] It should be understood that certain features of this application described in the context of a single implementation for clarity can also be provided in combination in a single implementation. Conversely, multiple features of this application described in the context of a single implementation for brevity can also be provided individually or in any suitable sub-combination or, as appropriate, in any other described implementation of this application. Certain features described in the context of multiple implementations should not be considered essential features of those implementations unless the implementation does not function without these elements.
[0069] Although this application has been described in conjunction with its specific embodiments, it will be apparent to those skilled in the art that many alternatives, modifications, and variations are possible. Therefore, it is intended to include all such alternatives, modifications, and variations falling within the spirit and broad scope of the appended claims.
Claims
1. A liquid medium circulation device, characterized in that, include: balloon; An injection assembly is provided, which is connected to the balloon via a liquid inlet line. The injection assembly is used to control the entry of a liquid medium into the balloon in order to control the inflation of the balloon. The recovery assembly includes a recoverer and a suction device. The recoverer and the balloon are connected by a recovery pipeline, which is unidirectional. The suction device is connected to the recovery pipeline and includes a suction tube and a piston rod axially movable within the suction tube. The suction tube has a connecting port that connects to the recovery pipeline. The piston rod has a blocking state that seals the connecting port and a suction state that moves axially to form a liquid reservoir with negative pressure. The liquid reservoir is connected to the connecting port.
2. The liquid medium circulation device according to claim 1, characterized in that, The recovery assembly also includes a first one-way valve and a second one-way valve, which are connected to the recovery pipeline and located on both sides of the suction device, respectively.
3. The liquid medium circulation device according to claim 1, characterized in that, The recovery assembly also includes a three-way valve disposed in the recovery pipeline. The three-way valve includes a first interface, a second interface, and a third interface. Any two of the first interface, the second interface, and the third interface are connected. The first interface and the second interface are connected to the recovery pipeline, and the third interface is connected to the suction device.
4. The liquid medium circulation device according to claim 1, characterized in that, The injection assembly includes an injection container and an infusion pump. One end of the inlet pipe is connected to the injection container, and the other end is connected to the balloon. The infusion pump is located in the inlet pipe.
5. The liquid medium circulation device according to claim 4, characterized in that, The injection assembly also includes a clamp valve, which is disposed in the inlet pipeline and located between the injection container and the injection pump.
6. The liquid medium circulation device according to claim 1, characterized in that, The injection assembly includes a third check valve connected to the inlet line.
7. The liquid medium circulation device according to claim 6, characterized in that, The injection assembly includes an injection container and an infusion pump. One end of the inlet line is connected to the injection container, and the other end is connected to the balloon. The infusion pump is located in the inlet line, and the third one-way valve is located between the infusion pump and the balloon.
8. The liquid medium circulation device according to claim 1, characterized in that, The liquid medium circulation device also includes a hydraulic sensor for detecting the internal pressure of the balloon.
9. The liquid medium circulation device according to claim 8, characterized in that, The hydraulic sensor is installed in the inlet pipe.
10. The liquid medium circulation device according to claim 1, characterized in that, The liquid medium circulation device also includes a bubble sensor for detecting bubbles in the liquid medium.
11. The liquid medium circulation device according to claim 10, characterized in that, The injection assembly includes an injection pump, the bubble sensor is disposed in the inlet pipeline, and the bubble sensor is communicatively connected to the injection pump.
12. The liquid medium circulation device according to any one of claims 1-11, characterized in that, The end of the recycling pipeline is a flexible hose, which is inserted into the recycling unit.
13. An ablation system, characterized in that, include: A liquid medium circulation device, comprising: balloon; An injection assembly for controlling the entry of a liquid medium into the balloon to control the inflation of the balloon; A recovery assembly includes a recoverer and a suction device. The recoverer and the balloon are connected by a recovery tubing, which is unidirectional. The suction device is connected to the recovery tubing and includes a suction tube and a piston rod axially movable within the suction tube. The suction tube has a connecting port that connects to the recovery tubing. The piston rod has a blocking state that seals the connecting port and a suction state that moves axially to form a liquid reservoir with negative pressure. The liquid reservoir is connected to the connecting port. as well as, A support catheter, the distal end of which is sealed to the proximal end of the balloon; An energy emitter is disposed within the balloon.
14. The ablation system according to claim 13, characterized in that, The support conduit has an inlet, a through port, and an outlet that are interconnected. The inlet is connected to the inlet line of the injection assembly, the outlet is connected to the recovery line, and the through port is connected to the balloon.