CN219422957U - Cooling system and ablation system - Google Patents

Abstract

The utility model discloses a cooling system and an ablation system, wherein the cooling system comprises: the main liquid supply device is used for providing cooling liquid; a first flow rate detection device disposed at the main liquid supply device for detecting a first flow rate of the cooling liquid flowing out from the main liquid supply device; a first cooling line connected between the main liquid supply device and a cold liquid inlet of a conduit to be cooled, so that the flowing cooling liquid is used for cooling the conduit to be cooled; a second cooling pipeline for connecting with a cold liquid outlet of the conduit to be cooled; and a second flow rate detection device disposed on the second cooling line for detecting a second flow rate of the cooling liquid in the second cooling line. According to the cooling system provided by the embodiment of the utility model, the flowing state of the cooling liquid can be detected to determine whether leakage exists in the cooling system.

Description

Cooling system and ablation system

Technical Field

The present utility model relates generally to the technical field of medical devices. More particularly, the present utility model relates to a cooling system and an ablation system.

Background

Laser interstitial hyperthermia (laser interstitial thermotherapy, LITT) is a technique that uses the thermal effects of lasers to ablate diseased tissue for treatment. LITT technology is gradually applied to the treatment of intracranial lesions such as brain glioma due to the advantages of small wound, high treatment efficiency and the like. Specifically, the LITT technique uses a laser fiber (also known as an ablative fiber) inserted into an intracranial lesion to create a controlled thermal injury by heating surrounding tissue to destroy the lesion for therapeutic purposes.

Because local temperature rise is brought in the ablation process by adopting the LITT technology, and the tissue carbonization is increased and the damage of adjacent blood vessels, nerves and the like is caused by the excessive temperature, a cooling system is generally required to assist in temperature control in the ablation process by the LITT, so that the laser ablation process is safer and more stable. However, the cooling fluid of conventional cooling systems may risk leakage during use, causing damage to medical equipment and injury to the patient.

In view of the foregoing, it is desirable to provide a cooling system that can determine whether there is a leak in the cooling liquid.

Disclosure of Invention

In order to solve at least one or more of the technical problems mentioned above, the present utility model proposes, in various aspects, a cooling system and an ablation system.

In a first aspect, the present utility model provides a cooling system comprising: the main liquid supply device is used for providing cooling liquid; a first flow rate detection device disposed at the main liquid supply device for detecting a first flow rate of the cooling liquid flowing out from the main liquid supply device; a first cooling line connected between the main liquid supply device and a cold liquid inlet of a conduit to be cooled, so that the flowing cooling liquid is used for cooling the conduit to be cooled; a second cooling pipeline for connecting with a cold liquid outlet of the conduit to be cooled; and a second flow rate detection device disposed on the second cooling line for detecting a second flow rate of the cooling liquid in the second cooling line.

In some embodiments, the cooling system further comprises: a primary power device is disposed on the first cooling line and configured to push the flow of the cooling fluid in the first cooling line according to a preset flow rate.

In other embodiments, the cooling system further comprises: a pressure detection device is disposed on the first cooling line between the primary power device and the cold liquid inlet for detecting line pressure between the primary power device and the cold liquid inlet.

In still other embodiments, the cooling system further comprises: a third flow rate detection device is disposed on the first cooling line between the primary power device and the cold liquid inlet for detecting a third flow rate of the cooling liquid between the primary power device and the cold liquid inlet.

In some embodiments, the cooling system further comprises: a bubble detection sensor arranged at the cold liquid inlet or at a position close to the cold liquid inlet in the first cooling pipeline for detecting whether bubbles exist in the cooling liquid entering the conduit to be cooled.

In other embodiments, the cooling system further comprises: a temperature control device is arranged on the first cooling line at a position close to the cold liquid inlet and/or at the main liquid supply device for detecting and/or controlling a first temperature of the cooling liquid entering the conduit to be cooled.

In still other embodiments, the cooling system further comprises: a temperature detection device arranged on the second cooling line for detecting a second temperature of the cooling liquid flowing out of the conduit to be cooled.

In some embodiments, the cooling system further comprises: a cooling branch pipe connected to a first cooling line between the main power device and the cold liquid inlet; and a backup liquid supply device connected to the cooling branch pipe and configured to supply a cooling liquid via the cooling branch pipe.

In other embodiments, the cooling system further comprises: and a backup power unit disposed on the cooling branch pipe for pushing the flow of the cooling liquid in the cooling branch pipe.

In still other embodiments, the first flow detection apparatus comprises: and the liquid level sensor is positioned in the main liquid supply equipment and is used for detecting the liquid level change condition in the main liquid supply equipment.

In some embodiments, the first flow detection device comprises: and the gravity sensor is positioned outside the main liquid supply device and is used for detecting the weight change condition of the cooling liquid in the main liquid supply device.

In a second aspect, the present utility model provides an ablation system comprising: a cooling system according to any one of the first aspects of the present utility model; an ablation fiber optic catheter connected to the cooling system; and an ablation fiber optic located within the ablation fiber optic catheter.

By the cooling system provided by the scheme, the cooling system of the embodiment of the utility model detects the first flow rate at the main liquid supply device and the second flow rate in the second cooling pipeline through the first flow rate detection device, and the flowing state of the cooling liquid can be monitored through the first flow rate and the second flow rate to determine whether leakage exists in the cooling system.

Further, in some embodiments, by providing a pressure detection device to detect the line pressure between the primary power device and the cold liquid inlet, the state of the cooling liquid in the cooling system can be monitored more accurately based on the line pressure.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present utility model will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. In the drawings, embodiments of the utility model are illustrated by way of example and not by way of limitation, and like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 shows a schematic diagram of a cooling system according to an embodiment of the utility model;

FIG. 2 shows a schematic diagram of a cooling system according to another embodiment of the utility model;

FIG. 3 shows a schematic diagram of a cooling system including a pressure detection device according to an embodiment of the utility model;

FIG. 4 shows a schematic diagram of a cooling system including a temperature control device according to an embodiment of the present utility model; and

fig. 5 shows a schematic view of a cooling system comprising a back-up liquid supply according to an embodiment of the utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be understood that the terms "comprises" and "comprising," when used in this specification and in the claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the specification and claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the present specification and claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

Fig. 1 shows a schematic diagram of a cooling system according to an embodiment of the utility model. As shown in fig. 1, the cooling system may include: a main liquid supply device 110 for supplying a cooling liquid; a first flow rate detection device 120 disposed at the main liquid supply device 110 for detecting a first flow rate of the cooling liquid flowing out from the main liquid supply device 110; a first cooling line 130 connected between the main liquid supply apparatus 110 and the cold liquid inlet 11 of the conduit 10 to be cooled, so that the flowing cooling liquid is used for cooling the inside of the conduit 10 to be cooled; a second cooling line 140 for connection with the cold liquid outlet 12 of the conduit 10 to be cooled; and a second flow rate detection device 150 disposed on the second cooling line 140 for detecting a second flow rate of the cooling liquid in the second cooling line 140.

In some embodiments, the primary fluid supply apparatus 110 may include one or more of a coolant bag, a coolant bottle, a coolant tank, etc., within which the coolant may be stored. The composition of the cooling liquid may be selected as desired, such as cooling water, cooling brine, cooling oil, and the like. In other embodiments, the first flow detection device 120 may be disposed within the primary liquid supply device 110 and/or external to the primary liquid supply device 110. In still other embodiments, the first flow detection device 120 may be disposed at the bottom of the primary liquid supply device 110.

In some embodiments, the first flow detection device 120 may be one or more of a thermal flow meter, a mechanical flow meter, a mass flow meter, a rotameter, an orifice plate flow meter, and the like. In other embodiments, the first flow detection device 120 may include: a fluid level sensor, which may be located within the primary fluid supply 110, is used to detect a change in fluid level within the primary fluid supply 110. According to such an arrangement, the first flow rate can be determined from the condition that the level of the cooling liquid in the main liquid supply apparatus 110 detected by the liquid level sensor changes with time. In other embodiments, an alarm signal may be sent to indicate the addition of coolant when the level sensor senses that the level of coolant within the primary liquid supply 110 is less than a preset level threshold.

The first cooling line 130 described above is used to convey the cooling liquid in the main liquid supply apparatus 110 into the conduit 10 to be cooled, so that the cooling liquid flows through the conduit 10 to be cooled and cools it. In some application scenarios, the catheter 10 to be cooled may be an ablation fiber catheter, in which the ablation fiber 20 may be placed, and the cooling system according to an embodiment of the present utility model may be connected to the catheter 10 to be cooled, so as to cool the ablation fiber 20 therein. The cooling liquid after cooling the ablation fiber 20 flows out through the cooling liquid outlet 12 of the catheter 10 to be cooled and is discharged through the second cooling pipe 140. In some embodiments, the flow of cooling fluid may be forced by gravity by positioning the primary liquid supply 110 above the conduit 10 to be cooled and positioning the secondary cooling line 140 below the conduit 10 to be cooled. It will be appreciated that the catheter 10 to be cooled may not be limited to an ablative fiber optic catheter, but may be other catheters that need to be cooled.

In some embodiments, the second flow detection device 150 may be one or more of a thermal flow meter, a mechanical flow meter, a mass flow meter, a rotameter, an orifice plate flow meter, and the like. The types of the first flow rate detection device 120 and the second flow rate detection device 150 may be the same or different.

It will be appreciated that when the flow of coolant in the cooling system is normal, the first and second flows should be in a relatively steady state (i.e., substantially unchanged over a period of time) and should be substantially equal. When the first flow rate and/or the second flow rate change, it is indicated that the flow state of the cooling liquid in the cooling system is unstable, so that there may be a situation of blockage or leakage, etc. When the second flow is smaller than the first flow, this indicates that the flow of coolant in the second cooling circuit is smaller, thus indicating that there may be a leak in the cooling system. Based on this, when using the cooling system according to the embodiment of the present utility model, an operator can quickly determine the flow state of the cooling liquid in the cooling system by observing the relationship between the first flow rate and the second flow rate and the change condition of the two.

In some embodiments, a cooling system according to an embodiment of the present utility model may further include: a bubble detection sensor may be disposed at the cold liquid inlet 11, or may be disposed at a position close to the cold liquid inlet 11 in the first cooling line 130 for detecting whether or not bubbles are present in the cooling liquid entering the conduit 10 to be cooled. The approach here may be understood as being closer to the cold liquid inlet 11 than to the main liquid supply 110; or it may be understood that the bubble detecting sensor is located between the center point of the first cooling line 130 and the cold liquid inlet 11.

In other embodiments, the bubble detection sensor may comprise, for example, a capacitive bubble sensor, a photoelectric bubble sensor, an ultrasonic bubble sensor, or the like. The capacitive bubble sensor can comprise capacitive polar plates arranged on two sides of the pipeline, and the principle is to detect whether bubbles exist in the pipeline according to capacitance changes between the capacitive polar plates on two sides. The photoelectric bubble sensor can comprise photoelectric devices such as a phototriode and a photodiode, and the principle is that the relation between output voltage and illumination intensity can be obtained according to volt-ampere characteristics, and when bubbles exist in cooling liquid in a pipeline, the photoelectric devices receive light intensity changes due to different light reflection and absorption of different media, so that the output voltage changes.

The ultrasonic bubble sensor may include an ultrasonic wave transmitting part and an ultrasonic wave receiving part (e.g., a voltage wafer, which can transmit and receive ultrasonic waves) and may detect whether bubbles exist in a pipe line according to a change in the ultrasonic waves received by the ultrasonic wave receiving part. The bubble detection sensor may employ an existing or other future-realizable device having a function of detecting bubbles in the liquid as needed, without limitation. In still other embodiments, the first flow detection device 120 may have both bubble detection and flow detection functions.

In the application scenario of cooling the ablation fiber, if the cooling liquid entering the ablation fiber catheter contains bubbles, the cooling effect of the cooling liquid on the ablation fiber 20 may be affected, and the bubbles may form a lens effect due to the bubbles, so that the bubbles affect the light emitting effect when flowing through the light emitting position of the ablation fiber 20, thereby having a large safety risk. By detecting bubbles in the cooling liquid before entering the ablation fiber catheter, whether bubbles exist in the cooling liquid which is about to enter the ablation fiber catheter or not can be known, so that early warning is carried out in advance or effective measures are taken, and the influence on the ablation process is avoided. For example, when the existence of the air bubble is detected, the air bubble detection sensor can send prompt information to enable an operator to know, or automatic control can be triggered or the first flow can be adjusted through operation of the operator, so that the air bubble passes through the ablation fiber catheter as soon as possible, and the influence of the air bubble on the ablation process can be reduced.

As described above with reference to fig. 1, it may be understood that by setting the first flow detection device and the second flow detection device, flow monitoring of each pipeline in the cooling system may be formed, and thus whether leakage exists in the cooling liquid in the cooling system may be rapidly determined by whether the first flow and the second flow change, the trend of change, and the like, so that an operator may timely troubleshoot and take effective measures to reduce the influence on the surgical procedure, thereby being beneficial to improving safety and reliability of the surgical procedure. It will also be appreciated that cooling systems according to embodiments of the present utility model may not be limited to include only the devices described above, and in some embodiments may also include power plants and the like. As will be further described below in connection with fig. 2.

Fig. 2 shows a schematic view of a cooling system according to another embodiment of the utility model. As shown in fig. 2, the cooling system may include: the main fluid supply device 110, the first flow detection device 120, the first cooling line 130, the second cooling line 140, the second flow detection device 150 and the main fluid supply device 210, wherein the cooling fluid in the main fluid supply device 110 can flow into the catheter 10 to be cooled via the first cooling line 140 and the cooling fluid inlet 11, so as to be capable of cooling the ablation fiber 20 therein when the ablation fiber 20 is placed in the catheter 10 to be cooled. The primary power device 210 may be disposed on the first cooling circuit 130 and may be used to push the flow of the cooling fluid in the first cooling circuit 130 according to a preset flow rate.

In some embodiments, the primary power device 210 may include a peristaltic pump, a centrifugal pump, or other water pump, or the like. The preset flow rate may be a flow rate value set as needed. The preset flow can be preset before operation, or can be timely adjusted during operation according to the needs. Taking the main power device 210 as a peristaltic pump as an example, the rotational speed of the peristaltic pump may be set according to a desired preset flow rate, so that the operation of the peristaltic pump can push the cooling liquid in the first cooling tube 130 to flow at the preset flow rate. Generally, the greater the desired preset flow, the greater the rotational speed of the peristaltic pump. The rotational speed of the peristaltic pump refers to the speed at which the motor of the peristaltic pump is running.

However, even if the primary power device 210 is operated according to a preset flow, the actual flow of the cooling fluid will change when there is leakage and/or blockage in the cooling system. Therefore, according to the cooling system of the embodiment of the present utility model, the flowing state of the cooling liquid in the cooling system can be reflected in time by the arrangement of the first flow rate detecting device 120 and the second flow rate detecting device 150. Specifically, when both the first flow rate and the second flow rate are equal to the preset flow rate (without taking errors into consideration), it can be determined that the coolant in the cooling system flows normally; when the first flow and the second flow are smaller than the preset flow, determining that a blockage exists in the cooling system; when the first flow rate is greater than the second flow rate in the steady state, it may be determined that a leak exists in the cooling system.

In still other embodiments, when the first flow rate and/or the second flow rate are changed, at least one of a position where leakage occurs, a position where blockage, a degree of leakage, a degree of blockage, and the like in the cooling system may be determined according to a trend of the change in the first flow rate and/or the second flow rate. For example, when the second flow rate is changed to decrease and increase, it indicates that there may be a slight blockage in the cooling system; when the trend of the second flow is rapid return to zero, it is indicated that there may be a severe blockage in the cooling system. In other embodiments, the operator may be guided to make a judgment by counting a fault relation table between the first flow, the second flow and a fault (such as leakage and/or blockage) possibly existing in the cooling system in advance, or by setting an alarm device to perform a corresponding alarm operation, so as to perform risk prompt and the like on the operator.

As further shown in fig. 2, in some embodiments, the first flow detection device 120 may include a gravity sensor, which may be located outside of the primary liquid supply device 110, and may be used to detect a change in weight of the cooling liquid within the primary liquid supply device 110. The gravity sensor can be connected with the main liquid supply device 110 through the hook 220 to detect the weight change condition of the main liquid supply device 110, thereby achieving the purpose of detecting the weight change condition of the cooling liquid in the main liquid supply device 110. The weight change condition of the cooling liquid in the main liquid supply device 110 along with the time is sensed by the gravity sensor, so that the first flow rate of the cooling liquid flowing out of the main liquid supply device 110 can be obtained.

Gravity sensors, which may also be referred to as load cells, are devices that are capable of converting a mass signal into a measurable electrical signal output. In other embodiments, an alarm signal may be sent to alert the addition of coolant when the weight of the primary liquid supply 110 is sensed by the gravity sensor to be less than a preset weight threshold. In still other embodiments, the cooling system according to embodiments of the present utility model may further include an alarm device, and the gravity sensor may issue an alarm signal to the alarm device for alerting by the alarm device.

In still other embodiments, the cooling system may further include a cold liquid recovery device 230 coupled to the second cooling line 140 and configured to receive the cooling liquid flowing in the second cooling line 140. The cold liquid recovery apparatus 230 may be, for example, a cold liquid recovery tank, a cold liquid recovery bag, or the like. In other embodiments, a refrigeration device may be provided in the cold liquid recovery apparatus 230 to cool the recovered cold liquid for recycling.

While a cooling system according to another embodiment of the present utility model has been described above with reference to fig. 2, it is to be understood that the above description is by way of example and not limitation, and that the first flow detection device 120 may take the form of a gravity sensor, a level sensor or other flow meter, etc., as desired. For example, the coolant flowing out of the second cooling line 140 may be not limited to the coolant recovery device 230 shown in the drawing, but may be set to be circulated into the main liquid supply device 110 in a closed state as needed, and in this case, the first flow rate may be detected without using a gravity sensor or a liquid level sensor, but a flow meter may be provided at the bottom of the main liquid supply device 110. Further, the cooling system of the embodiment of the present utility model may not be limited to monitoring the flow state of the cooling liquid only by the first flow rate detecting device 120 and the second flow rate detecting device 150, and for example, a pressure detecting device may be provided to further detect the state of the cooling liquid in the cooling system. As will be described below in connection with fig. 3.

Fig. 3 shows a schematic view of a cooling system comprising a pressure detection device according to an embodiment of the utility model. As shown in fig. 3, the cooling system may include: the main liquid supply device 110, the first flow detection device 120, the first cooling line 130, the second cooling line 140, the second flow detection device 150, the main liquid supply device 210, and the pressure detection device 310, wherein the first flow detection device 120 may be connected with the main liquid supply device 110 by a hook 220, and the pressure detection device 310 may be disposed on the first cooling line 130 and may be located between the main power device 210 and the cold liquid inlet 11 of the conduit 10 to be cooled for detecting the line pressure between the main power device 210 and the cold liquid inlet 11. Optionally, the cooling system according to an embodiment of the present utility model may further include a cold liquid recovery device 230, which is not described here.

In some embodiments, the pressure detection device 310 may include a pressure sensor. A pressure sensor is a device or apparatus that is capable of sensing a pressure signal and converting the pressure signal to a usable output electrical signal according to a certain law. In some application scenarios, the pressure sensor may generally consist of a pressure sensitive element and a signal processing unit. The pressure sensors may include gauge pressure sensors, differential pressure sensors, absolute pressure sensors, and the like, depending on the type of test pressure.

By providing the pressure detecting device 310, the coolant flow condition in the cooling system can be comprehensively judged in combination with the first flow rate, the second flow rate and the line pressure. For example, when the first flow rate and the second flow rate are both substantially equal to the preset flow rate, and the line pressure is substantially stable, it is indicated that the flow state of the cooling liquid in the cooling system is a normal state. When both the first flow rate and the second flow rate are less than the preset flow rate and the line pressure increases, it is indicated that there may be a blockage in the other lines of the cooling system except for the main liquid supply apparatus 110 and the main liquid supply apparatus 210. When the line pressure drops to one atmosphere, it is indicated that a blockage may exist between the primary liquid supply apparatus 110 and the primary power apparatus 210 and/or at the primary power apparatus 210.

It will be appreciated from the foregoing that by combining line pressure, it may be more advantageous to accurately monitor and determine the flow conditions of the coolant in the cooling system, and to further determine where blockages and/or leaks occur, etc., and are not exhaustive. In other embodiments, the operator may be guided to perform judgment by counting in advance a fault relationship table between the change conditions of the first flow, the second flow and the line pressure and faults (such as leakage and/or blockage) possibly existing in the cooling system, or perform corresponding alarm operation by setting alarm equipment, so as to perform risk prompt and the like on the operator.

While the cooling system including the pressure detection device according to the embodiment of the present utility model has been described above by way of example with reference to fig. 3, it is to be understood that the above description is by way of example and not limitation, and that in other embodiments, a third flow detection device may be employed instead of the pressure detection device, i.e., disposed on the first cooling line between the primary power device and the cold liquid inlet for detecting a third flow of the cooling liquid between the primary power device and the cold liquid inlet. The type of the third flow rate detection device may be the same as or similar to the type of the second flow rate detection device described above in connection with fig. 1, and will not be described again here.

By providing the third flow rate detection device, the flow state of the cooling liquid between the main power device and the cooling liquid inlet can be detected, so that the position or the like where blockage and/or leakage is likely to occur can be determined in an auxiliary manner according to the change condition of the third flow rate, and more accurate monitoring of the flow state of the cooling liquid in the cooling system can be realized based on the first flow rate, the second flow rate and the third flow rate. In still other embodiments, a third flow rate detection device and a pressure detection device may both be provided as desired to detect a third flow rate and line pressure between the primary power device 210 and the cold liquid inlet 11 simultaneously.

Fig. 4 shows a schematic diagram of a cooling system comprising a temperature control device according to an embodiment of the utility model. As shown in fig. 4, the cooling system may include: the primary liquid supply device 110, the first flow detection device 120, the first cooling line 130, the second cooling line 140, the second flow detection device 150, the primary liquid supply device 210, the pressure detection device 310, the cold liquid recovery device 230 and the temperature control device 410, wherein the first flow detection device 120 may be connected to the primary liquid supply device 110 by means of a hook 220, the temperature control device 410 may be arranged on the first cooling line 130 near the cold liquid inlet 11 and/or may be arranged at the primary liquid supply device 110 for detecting and/or controlling a first temperature of the cooling liquid entering the conduit 10 to be cooled.

In some embodiments, the temperature control device 410 may have both temperature sensing and temperature control functions. In other embodiments, the temperature control device 410 may be a device capable of cooling for reducing the temperature of the cooling fluid. In still other embodiments, the temperature control device 410 may include a temperature sensing fiber for temperature detection; a resistance wire may also be included to achieve the purpose of warming the coolant when the resistance wire is heated by direct current. In some embodiments, the temperature control device 510 may include a cooling device such as an ice water bath to reduce the first temperature by cooling the first cooling line.

In some application scenarios, the temperature control device 410 may be disposed at the main liquid supply device 110, for example, disposed outside the main liquid supply device 110, or disposed inside the main liquid supply device 110, so as to detect and/or control the temperature of the cooling liquid in the main liquid supply device 110, thereby achieving the purpose of controlling the first temperature. In other applications, the temperature control device 410 may be disposed on the first cooling line 130 near the cold liquid inlet 11, where the near may be understood as being closer to the cold liquid inlet 11 than to the main liquid supply device 110; or it may be understood that the temperature control device 410 is located between the center point of the first cooling line 130 and the cold liquid inlet 11. In some embodiments, the temperature control device 410 may be disposed outside of the first cooling line 130. In still other embodiments, the temperature control device 410 may be proximate to the junction of the first cooling line 130 and the cold liquid inlet 11.

In some application scenarios, for example in monitoring a cooling system during a ablation operation, since too low a temperature of the cooling fluid may also cause damage to normal tissue of the patient, in order to ensure that the cooling fluid does not cause damage to normal tissue of the patient, it is preferable that the first temperature of the cooling fluid before entering the catheter to be cooled is controlled at 33-37 ℃. According to such a need, the temperature of the cooling liquid may be automatically lowered when the temperature control device 410 detects that the temperature of the cooling liquid is higher than 37 ℃; or when the temperature of the cooling liquid is detected to be lower than 33 ℃, the cooling liquid is automatically heated so that the first temperature of the cooling liquid can be kept between 33 ℃ and 37 ℃.

Further, in still other embodiments, a cooling system according to an embodiment of the present utility model may further include: a temperature detection device may be arranged on the second cooling line 140 for detecting a second temperature of the cooling liquid flowing out of the conduit 10 to be cooled. In some embodiments, the temperature detection device may include a temperature sensor that may be located on the second cooling circuit 140 to detect a second temperature of the cooling fluid within the second cooling circuit 140. A temperature sensor refers to a sensor that senses temperature and converts it into a usable output signal. In other embodiments, the temperature sensor may include, for example, a resistive sensor, a thermocouple sensor, and the like. The type of temperature detection device may be selected as desired, and is not limited herein.

Further, by providing both the temperature detecting device and the temperature controlling device 410, it is possible to facilitate effective regulation and control of the temperature of the cooling liquid. For example, in some application scenarios, in order to ensure the cooling effect, when the temperature detection device detects that the second temperature exceeds the preset temperature threshold, the temperature control device 410 may be triggered to cool the cooling liquid that is about to flow into the conduit 10 to be cooled, or the rotation speed of the main power device 210 may also be adjusted in a feedback manner, so as to increase the flow rate of the cooling liquid in the cooling system. In some embodiments, the preset temperature threshold may be set to, for example, 42 ℃ or the like, as desired.

While a cooling system including a temperature control device according to an embodiment of the present utility model has been described above by way of example with reference to fig. 4, it is to be understood that the illustration is exemplary and not limiting, and that, for example, the temperature control device 410 may not be limited to only one of the illustrated embodiments, but may be provided in plurality as desired. In some embodiments, two temperature control devices may be provided, one of which may be disposed on the first cooling line 130 at a position near the cold liquid inlet 11, and the other of which may be disposed at the main liquid supply device 110. Further, the cooling system according to an embodiment of the present utility model may further include a backup device, which will be exemplarily described below with reference to fig. 5.

Fig. 5 shows a schematic view of a cooling system comprising a back-up liquid supply according to an embodiment of the utility model. As shown in fig. 5, the cooling system may include: the main liquid supply apparatus 110, the first flow rate detection apparatus 120, the first cooling line 130, the second cooling line 140, the second flow rate detection apparatus 150, the main liquid supply apparatus 210, the pressure detection apparatus 310, the cold liquid recovery apparatus 230, and the temperature control apparatus 410, wherein the first flow rate detection apparatus 120 may be connected to the main liquid supply apparatus 110 by the hanger 220. In some embodiments, the cooling system may further include: a cooling branch pipe 510 which may be connected to the first cooling line 130 between the main power device 210 and the cold liquid inlet 11 of the pipe 10 to be cooled; and a spare liquid supply device 520 which may be connected to the cooling manifold 510 and used to supply a cooling liquid through the cooling manifold 510.

One end of the cooling manifold 510 may be in communication with the first cooling line 130 and the other end may be connected to the back-up liquid supply device 520 such that the cooling liquid in the back-up liquid supply device 520 may flow through the cooling manifold 510 into the first cooling line 130 and thus into the conduit 10 to be cooled. In some embodiments, a valve may be provided on the cooling manifold 510 for controlling the opening and closing of the cooling manifold 510. In other embodiments, the back-up fluid supply apparatus 520 may include one or more of a back-up fluid supply bag, a back-up fluid supply bottle, a back-up fluid supply tank, and the like. In still other embodiments, a fourth flow detection device may be provided at the back-up fluid supply 520 to detect a fourth flow of cooling fluid from the back-up fluid supply 520. The implementation of the fourth flow detection device may be the same as or similar to the implementation of the first flow detection device described above, and will not be described here again.

In some application scenarios, when a failure such as leakage or blockage occurs at the primary power device 210 or between the primary power device 210 and the primary fluid supply device 110, the cooling manifold 510 and the backup fluid supply device 520 may be turned on, so that the cooling fluid in the backup fluid supply device 520 may be timely replenished into the first cooling line 130, so as to avoid affecting the cooling effect during the ablation process, thereby facilitating reduction of risk of surgical interruption and injury to the patient due to non-ideal cooling effect. In other application scenarios, when the measured temperature of the ablation fiber is high, rapid cooling may be required to take away more heat of the ablation fiber, and at this time, since the primary liquid supply device 110 is far away, the purpose of rapidly increasing the flow of the cooling liquid to rapidly cool down can be achieved by starting the standby liquid supply device 520 with a relatively short distance. In an ablation procedure cooling system, the primary fluid supply device is typically disposed outside the magnetic resonance chamber for ease of operation while also avoiding the safety risk of failure thereof within the magnetic resonance chamber. Therefore, the safety in the magnetic resonance room can be ensured by the provision of the spare liquid supply apparatus 520 while the original cooling operation is not changed.

As further shown in fig. 5, in other embodiments, the cooling system may further comprise: a spare power device 530, which may be disposed on the cooling manifold 510, for pushing the flow of the cooling fluid in the cooling manifold 510. In some embodiments, backup power device 530 may include, for example, a peristaltic pump, a centrifugal pump, or other water pump, among others. In other embodiments, the standby power device 530 may be a magnetically compatible device. In still other embodiments, the backup power appliance 530 may be placed within a shielded enclosure. In other embodiments, the opening and closing of cooling manifold 510 may be controlled by controlling the opening or closing of backup power plant 530, i.e., controlling whether cooling fluid from backup fluid supply 520 flows into first cooling conduit 130. In still other applications, the flow rate of the cooling fluid in cooling branch 510 may be determined based on the rotational speed of backup power unit 530; or to control the rotational speed of the backup power plant 530 based on the desired backup flow.

While a cooling system including a backup liquid supply apparatus according to an embodiment of the present utility model has been described above with reference to fig. 5, it will be appreciated that by providing a backup liquid supply apparatus and cooling manifold, it may be advantageous to further increase the cooling capacity and cooling rate of the cooling system, and to reduce the extent of impact on the cooling effect and the procedure when the cooling system fails. It will also be appreciated that the cooling system shown in the figures is exemplary and not limiting, and that, for example, the pressure sensing apparatus 310, the cold liquid recovery apparatus 230, etc. may be selectively arranged as desired. For another example, the first flow rate detecting device 120 may be not limited to the gravity sensor shown in the drawings, but may be provided in other forms as needed.

Through the above description of the technical solution and the embodiments of the cooling system according to the present utility model, it will be understood by those skilled in the art that the cooling system according to the embodiments of the present utility model may help to quickly determine whether there is a leak in the cooling system by providing the first flow rate detection device and the second flow rate detection device, thereby being beneficial to improving safety during an ablation procedure. Further, in some embodiments, by providing a pressure detection device, it can be more advantageous to accurately detect possible leakage and/or blockage risks in the cooling system, as well as to help determine where leakage and/or blockage occurs, which is of great significance for ablation procedures.

Further, according to an aspect of the present utility model, there is provided an ablation system, which may include: a cooling system as hereinbefore described with reference to any one of figures 1 to 5; an ablative fiber optic catheter connected to the cooling system; and an ablation fiber positioned within the ablation fiber catheter. During an ablation procedure, the ablation fiber and the ablation fiber catheter need to be inserted into the body of a patient (including but not limited to the brain) to perform ablation treatment on a lesion in the patient, and cooling water flowing in a cooling system can be used to cool the ablation fiber to assist in controlling the temperature of the ablation fiber and avoiding damage to normal tissues by high temperatures. In some embodiments, the ablation fiber catheter may be tubular in structure and may form a closed flow path with the first cooling circuit and the second cooling circuit to avoid entry of cooling fluid into the patient.

In the foregoing description of the present specification, the terms "fixed," "mounted," "connected," or "connected" are to be construed broadly, unless explicitly stated or limited otherwise. For example, in terms of the term "coupled," it may be fixedly coupled, detachably coupled, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other. Therefore, unless otherwise specifically defined in the specification, a person skilled in the art can understand the specific meaning of the above terms in the present disclosure according to the specific circumstances.

While various embodiments of the present utility model have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the utility model. It should be understood that various alternatives to the embodiments of the utility model described herein may be employed in practicing the utility model. The appended claims are intended to define the scope of the utility model and are therefore to cover all equivalents or alternatives falling within the scope of these claims.

Claims (12)

1. A cooling system, comprising:

the main liquid supply device is used for providing cooling liquid;

a first flow rate detection device disposed at the main liquid supply device for detecting a first flow rate of the cooling liquid flowing out from the main liquid supply device;

a first cooling line connected between the main liquid supply device and a cold liquid inlet of a conduit to be cooled, so that the flowing cooling liquid is used for cooling the conduit to be cooled;

a second cooling pipeline for connecting with a cold liquid outlet of the conduit to be cooled; and

and a second flow rate detection device disposed on the second cooling line for detecting a second flow rate of the cooling liquid in the second cooling line.

2. The cooling system of claim 1, further comprising:

a primary power device is disposed on the first cooling line and configured to push the flow of the cooling fluid in the first cooling line according to a preset flow rate.

3. The cooling system of claim 2, further comprising:

a pressure detection device is disposed on the first cooling line between the primary power device and the cold liquid inlet for detecting line pressure between the primary power device and the cold liquid inlet.

4. The cooling system of claim 2, further comprising:

a third flow rate detection device is disposed on the first cooling line between the primary power device and the cold liquid inlet for detecting a third flow rate of the cooling liquid between the primary power device and the cold liquid inlet.

5. The cooling system of claim 1, further comprising:

a bubble detection sensor arranged at the cold liquid inlet or at a position close to the cold liquid inlet in the first cooling pipeline for detecting whether bubbles exist in the cooling liquid entering the conduit to be cooled.

6. The cooling system of any one of claims 1-5, further comprising:

a temperature control device is arranged on the first cooling line at a position close to the cold liquid inlet and/or at the main liquid supply device for detecting and/or controlling a first temperature of the cooling liquid entering the conduit to be cooled.

7. The cooling system of claim 6, further comprising:

a temperature detection device arranged on the second cooling line for detecting a second temperature of the cooling liquid flowing out of the conduit to be cooled.

8. The cooling system of any one of claims 2-4, further comprising:

a cooling branch pipe connected to a first cooling line between the main power device and the cold liquid inlet; and

and a spare liquid supply device connected to the cooling branch pipe and used for supplying cooling liquid through the cooling branch pipe.

9. The cooling system of claim 8, further comprising:

and a backup power unit disposed on the cooling branch pipe for pushing the flow of the cooling liquid in the cooling branch pipe.

10. The cooling system according to any one of claims 1 to 5, wherein the first flow rate detecting device includes:

and the liquid level sensor is positioned in the main liquid supply equipment and is used for detecting the liquid level change condition in the main liquid supply equipment.

11. The cooling system according to any one of claims 1 to 5, wherein the first flow rate detecting device includes:

and the gravity sensor is positioned outside the main liquid supply device and is used for detecting the weight change condition of the cooling liquid in the main liquid supply device.

12. An ablation system, comprising:

a cooling system according to any one of claims 1-11;

an ablation fiber optic catheter connected to the cooling system; and

an ablation fiber optic located within the ablation fiber optic catheter.