Infusion device of steam ablation medical equipment and steam ablation medical equipment

Abstract

The utility model relates to the technical field of medical instruments, in particular to an infusion device of steam ablation medical equipment and the steam ablation medical equipment, the infusion device of the steam ablation medical equipment comprises an infusion assembly and a pressure detection assembly, the infusion assembly comprises an infusion tube, a peristaltic pump and a driving motor, and the infusion tube penetrates through the peristaltic pump; the driving motor is connected with the peristaltic pump, the pressure detection assembly is arranged on the driving motor, and the pressure detection assembly is suitable for detecting the load torque of the driving motor so as to obtain the pressure change in the infusion tube. Liquid blockage and liquid leakage in the peristaltic pump are dynamically mastered, the infusion device is simple in structure and low in manufacturing cost, blockage and leakage of an infusion tube during an operation can be found as soon as possible, application safety of the device is guaranteed, and the risk degree in the treatment process is reduced; the problems that in an existing steam ablation medical device, rotation blocking of an infusion tube cannot be detected, and a doctor cannot deal with the rotation blocking in time are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to an infusion device of steam ablation medical equipment and the steam ablation medical equipment. Background Art

[0002] Existing minimally invasive treatment technologies for prostate enlargement include microwave therapy, puncture ablation, thermal steam therapy, etc. These treatment technologies only require local anesthesia, are easy to operate, cause little trauma, and rarely bleed during the operation, and patients recover quickly after the operation.

[0003] In existing hot steam treatment equipment, energy is delivered to the prostate tissue via slender steam delivery needles that penetrate into multiple locations in the prostate lobe. When the steam delivery needle outputs steam, it generates a large amount of heat. By putting an external pipe outside the steam delivery needle and using a peristaltic pump to deliver saline in the external pipe for cooling, the existing solution installs a pressure sensor on the saline delivery pipe to detect the pressure of the delivery pipe, ensure the normal cooling of the steam delivery needle, and thus protect the safety of the urethra.

[0004] When conventional saline infusion pumps are delivering liquids, there are safety issues due to the problem of blockage of the infusion tube during the injection process or leakage during the infusion process due to unqualified infusion tubes, which leads to insufficient urethral cooling when delivering steam to the prostate. Utility Model Content

[0005] The utility model provides an infusion device of a steam ablation medical device and a steam ablation medical device, which are used to solve one of the defects in the prior art, dynamically control liquid blockage and liquid leakage in a peristaltic pump, the infusion device has a simple structure and low manufacturing cost, and can early detect blockage and leakage of the infusion tube during surgery, thereby ensuring the safety of the device application, reducing the risk level in the treatment process, and effectively solving the problem of infusion tube blockage that cannot be detected and doctors' untimely treatment in the existing steam ablation medical equipment.

[0006] The utility model provides an infusion device of a steam ablation medical device, comprising an infusion component and a pressure detection component, wherein the infusion component comprises an infusion tube, a peristaltic pump and a drive motor, the infusion tube is passed through the peristaltic pump, the drive motor is connected to the peristaltic pump, the pressure detection component is arranged on the drive motor, and the pressure detection component is suitable for detecting the load torque of the drive motor to obtain the pressure change in the infusion tube.

[0007] According to the infusion device of a steam ablation medical device provided by the utility model, the pressure detection component includes a pressure detection element, a pressure difference calculation element and a variance calculation element. The pressure detection element is suitable for detecting the load torque of the drive motor and sending out time series data. The pressure difference calculation element is suitable for calculating the pressure difference swing data before and after based on the time series data. The variance calculation element is suitable for calculating the variance of the pressure difference swing based on the pressure difference swing data.

[0008] According to an infusion device of a steam ablation medical apparatus provided by the utility model, the pressure detection component also includes a judgment element and a normal sequence variance storage element, and the judgment element is suitable for obtaining the blockage condition of the infusion tube based on the variance of the pressure difference swing and the variance of the normal pressure difference swing pre-stored in the normal sequence variance storage element.

[0009] According to the infusion device of a steam ablation medical device provided by the utility model, the infusion device of the steam ablation medical device further comprises a display component, wherein the display component is connected to the pressure detection component, and the display component is suitable for displaying the blockage condition of the infusion tube.

[0010] According to an infusion device of a steam ablation medical device provided by the utility model, the peristaltic pump includes a rotor and a pump body, the rotor is provided with a groove body, the infusion tube is arranged in the groove body, the pump body is connected to the rotor, and the rotor is driven to squeeze the infusion tube.

[0011] According to the infusion device of a steam ablation medical device provided by the utility model, the driving motor includes a stepping motor, a driver, a permanent magnet and a magnetic encoding sensor, the rotor, the shaft of the stepping motor, the permanent magnet and the magnetic encoding sensor are coaxially connected, the driver is connected to the stepping motor, and the pressure detection component is connected to the driver.

[0012] According to an infusion device of a steam ablation medical device provided by the utility model, the infusion component also includes a shell, the peristaltic pump is arranged inside the shell, the shell is provided with a guide groove, and the infusion tube enters the shell through the guide groove and is arranged in the groove body.

[0013] According to the infusion device of the steam ablation medical equipment provided by the utility model, the shell is also provided with a locking component, and the locking component is arranged corresponding to the infusion tube and is suitable for locking the position of the infusion tube on the shell.

[0014] According to the infusion device of the steam ablation medical equipment provided by the utility model, the infusion component also includes a cooling liquid source, and the infusion tube is connected to the cooling liquid source.

[0015] The utility model also provides a steam ablation medical device, comprising the infusion device of the steam ablation medical device as described above.

[0016] The infusion device of the steam ablation medical device of the utility model has liquid flowing in the infusion tube, the infusion tube is inserted into the peristaltic pump, and the driving motor drives the peristaltic pump to operate, exerts extrusion force on the infusion tube, and then provides flow power for the liquid in the infusion tube. When a liquid with a certain pressure is transported in the infusion tube, a certain pressure will be formed on the outer wall of the infusion tube, and this force will react to the peristaltic pump. The peristaltic pump is connected to the driving motor, so the pressure in the infusion tube will also be transmitted to the driving motor. The pressure detection component is arranged on the driving motor, and then the load torque of the driving motor can be detected to obtain the pressure change of the infusion tube.

[0017] This embodiment is connected to the driving motor through a pressure detection component to detect the pressure state of the liquid transported in the peristaltic pump, and provides a device for dynamically controlling liquid blockage and liquid leakage in the peristaltic pump. The infusion device has a simple structure and low manufacturing cost. It can be connected to an external circuit system to monitor the pressure generated during the infusion process, and early detection of infusion tube blockage and leakage during surgery, thereby ensuring the safety of the device application, reducing the risk level in the treatment process, and effectively solving the problem of undetectable infusion tube blockage and untimely treatment by doctors in existing steam ablation medical equipment.

[0018] In this embodiment, the load torque of the driving component is detected by the pressure detection component, and the pressure change of the infusion tube is indirectly obtained, that is, the pressure detection component and the infusion tube are not directly connected or set, thereby forming a non-invasive infusion tube pressure detection component, which not only ensures the integrity and mechanical properties of the infusion tube, but also ensures the safety and stability of the infusion process.

[0019] In addition to the technical problems solved by the utility model, the technical features of the technical solutions constituted, and the advantages brought about by the technical features of these technical solutions described above, other technical features of the utility model and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is one of the structural schematic diagrams of the infusion assembly of the infusion device of the steam ablation medical device provided in the embodiment of the utility model;

[0022] Figure 2 This is the second structural schematic diagram of the infusion assembly of the infusion device of the steam ablation medical device provided by the embodiment of the utility model;

[0023] Figure 3 This is the third structural schematic diagram of the infusion assembly of the infusion device of the steam ablation medical device provided in the embodiment of the utility model;

[0024] Figure 4 It is a structural schematic diagram of a pressure detection component of an infusion device of a steam ablation medical device provided in an embodiment of the utility model.

[0025] Reference numerals:

[0026] 100, infusion assembly; 110, infusion tube; 120, peristaltic pump; 121, rotor; 130, drive motor; 131, stepper motor; 132, permanent magnet; 133, magnetic encoding sensor; 134, circuit board; 135, driver; 140, housing; 141, guide groove; 150, locking component;

[0027] 200, pressure detection component; 210, pressure detection element; 220, pressure difference calculation element; 230, variance calculation element; 240, judgment element; 250, normal sequence variance storage element; 260, display component. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0029] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0031] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. 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.

[0032] In addition, in the description of the embodiments of the present utility model, unless otherwise specified, "multiple", "multiple roots", and "multiple groups" mean two or more, and "several", "several roots", and "several groups" mean one or more.

[0033] 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 utility model embodiment. 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.

[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the infusion device of the steam ablation medical equipment provided by the embodiment of the utility model includes an infusion component 100 and a pressure detection component 200. The infusion component 100 includes an infusion tube 110, a peristaltic pump 120 and a drive motor 130. The infusion tube 110 is passed through the peristaltic pump 120. The drive motor 130 is connected to the peristaltic pump 120. The pressure detection component 200 is arranged on the drive motor 130. The pressure detection component 200 is suitable for detecting the load torque of the drive motor 130 to obtain the pressure change in the infusion tube 110.

[0035] In the infusion device of the steam ablation medical device of the embodiment of the utility model, liquid flows in the infusion tube 110, the infusion tube 110 is inserted into the peristaltic pump 120, and the driving motor 130 drives the peristaltic pump 120 to operate, exerts an extrusion force on the infusion tube 110, and then provides flow power for the liquid in the infusion tube 110. When a liquid with a certain pressure is transported in the infusion tube 110, a certain pressure will be formed on the outer wall of the infusion tube 110, and this force will react to the peristaltic pump 120. The peristaltic pump 120 is connected to the driving motor 130, so the pressure in the infusion tube 110 will also be transmitted to the driving motor 130. The pressure detection component 200 is arranged on the driving motor 130, and then the load torque of the driving motor 130 can be detected to obtain the pressure change of the infusion tube 110.

[0036] This embodiment is connected to the drive motor 130 through the pressure detection component 200 to detect the pressure state of the liquid transported in the peristaltic pump 120, and provides a device for dynamically controlling liquid blockage and liquid leakage in the peristaltic pump 120. The infusion device has a simple structure and low manufacturing cost. It can be connected to an external circuit system to monitor the pressure generated during the infusion process, and early detection of blockage and leakage of the infusion tube 110 during surgery, thereby ensuring the safety of the device application, reducing the risk level in the treatment process, and effectively solving the problem of undetectable blockage of the infusion tube 110 and untimely treatment by doctors in existing steam ablation medical equipment.

[0037] The most difficult point in on-site diagnosis and resolution of infusion tube 110 failures is to obtain information closely related to the performance of the infusion tube 110, such as acceleration, stress, pressure, etc. Among them, pressure parameters are the most difficult to obtain. In order to evaluate the impact of liquid pulsation on the performance of the infusion tube 110, installing an invasive sensor on the infusion tube 110 will destroy the integrity of the infusion tube 110, which may affect the infusion process and the infusion tube 110 itself. In addition, deploying an invasive sensor at the connection of a small-caliber infusion tube 110 will cause production and processing difficulties and will destroy the mechanical properties of the infusion tube 110.

[0038] In this embodiment, the load torque of the driving component is detected by the pressure detection component 200, and the pressure change of the infusion tube 110 is indirectly obtained, that is, the pressure detection component 200 and the infusion tube 110 are not directly connected or set, thereby forming a non-invasive infusion tube 110 pressure detection component, which not only ensures the integrity and mechanical properties of the infusion tube 110, but also ensures the safety and stability of the infusion process.

[0039] According to an embodiment provided by the utility model, the pressure detection component 200 includes a pressure detection element 210, a pressure difference calculation element 220 and a variance calculation element 230. The pressure detection element 210 is suitable for detecting the load torque of the drive motor 130 and sending out time series data. The pressure difference calculation element 220 is suitable for calculating the pressure difference swing data before and after based on the time series data. The variance calculation element 230 is suitable for calculating the variance of the pressure difference swing based on the pressure difference swing data.

[0040] In this embodiment, the pressure detection component 200 is mainly composed of a pressure detection element 210, a pressure difference calculation element 220 and a variance calculation element 230. The pressure detection element 210 obtains the pressure in the infusion tube 110 passing through the peristaltic pump 120 based on the detection of the load torque of the driving motor 130, and outputs the time series data of the pressure to the pressure difference calculation element 220. The pressure difference calculation element 220 calculates the pressure difference swing data before and after based on the time series data of the pressure, and sends the pressure difference swing data to the variance calculation element 230; the variance calculation element 230 calculates the variance of the pressure difference swing based on the pressure difference swing data, and the variance of the pressure difference swing can be directly output. After the doctor knows it, he can compare it with the variance of the normal pressure difference swing, so as to judge the pressure condition of the infusion tube 110 and make timely response and operation.

[0041] According to an embodiment provided by the utility model, the pressure detection component 200 further includes a judgment element 240 and a normal sequence variance storage element 250, and the judgment element 240 is suitable for obtaining the blockage condition of the infusion tube 110 based on the variance of the pressure difference swing and the variance of the normal pressure difference swing pre-stored in the normal sequence variance storage element 250. In this embodiment, the judgment element 240 compares the variance of the pressure difference swing obtained by the variance calculation element 230 with the variance of the normal pressure difference swing pre-stored in the normal sequence variance storage element 250 to judge the blockage condition of the infusion tube 110 in the peristaltic pump 120. The judgment result can be directly output to the outside, and the doctor directly knows the working condition of the infusion tube 110.

[0042] According to an embodiment provided by the utility model, the infusion device of the steam ablation medical device further includes a display component 260, which is connected to the pressure detection component 200 and is suitable for displaying the blockage condition of the infusion tube 110. In this embodiment, the display component 260 can intuitively display the judgment result to the doctor, so that the doctor can know and further process the operation.

[0043] In this embodiment, if the variance of the pressure difference swing of the infusion tube 110 is greater than the variance of the normal pressure difference change, it proves that the infusion tube 110 is blocked or leaking, and the pressure difference detection component 100 sends an alarm signal to the display component 260.

[0044] The display component 260 may be a display screen, and the display component 260 displays the alarm information after receiving the alarm signal. The display component 260 may also be a status light, which may light up or change the color of the light after receiving the alarm signal, or a buzzer, which may sound an alarm after receiving the alarm signal.

[0045] According to an embodiment provided by the utility model, the peristaltic pump 120 includes a rotor 121 and a pump body, the rotor 121 is provided with a slot body, the infusion tube 110 is provided in the slot body, the pump body is connected to the rotor 121, and the rotor 121 is driven to squeeze the infusion tube 110. In this embodiment, the rotor 121 of the peristaltic pump 120 is provided with a slot body, the extension direction of the slot body is the direction of the infusion tube 110, and the infusion tube 110 is embedded in the slot body. On the one hand, the slot body plays a certain supporting and guiding role for the infusion tube 110, and can keep the position stable on the peristaltic pump 120. On the other hand, the pump body is connected to the rotor 121, and the pump body drives the rotor 121 to squeeze the infusion tube 110 to provide power for the flow of liquid in the infusion tube 110.

[0046] When the infusion tube 110 is placed in the trough, the peristaltic pump 120 squeezes the infusion tube 110 through the rotor 121. When the infusion tube 110 transports liquid of a certain pressure, the outer wall of the infusion tube 110 will form a certain pressure externally. This force will react to the rotor 121 of the peristaltic pump 120. The rotor 121 of the peristaltic pump 120 is connected to the drive motor 130, so the pressure in the infusion tube 110 will be transmitted to the drive motor 130. The pressure detection component 200 can detect the load torque of the drive motor 130, thereby detecting the pressure change.

[0047] According to an embodiment provided by the utility model, the driving motor 130 includes a stepping motor 131, a driver 135, a permanent magnet 132 and a magnetic encoding sensor 133, the rotor 121, the shaft of the stepping motor 131, the permanent magnet 132 and the magnetic encoding sensor 133 are coaxially connected, the driver 135 is connected to the stepping motor 131, and the pressure detection component 200 is connected to the driver 135. In this embodiment, the stepping motor 131, the rotor 121 of the peristaltic pump 120, the permanent magnet 132 and the magnetic encoding sensor 133 are sequentially connected on the same axis, even a slight pressure change in the infusion tube 110 can be directly reflected on the shaft of the stepping motor 131, the driver 135 drives the stepping motor 131 to operate, and the pressure detection component 200 detects and acquires signals from the driver 135, which can more easily sense the slight pressure change in the infusion tube 110.

[0048] The peristaltic pump 120 squeezes the infusion tube 110 through the rotor 121 to transport liquid at a certain pressure in the infusion tube 110. This force will react on the rotor 121 of the peristaltic pump 120. The rotor 121 of the peristaltic pump 120 and the shaft of the stepper motor 131 are coaxially connected. This force will be indirectly equivalent to the load torque of the stepper motor 131; the pressure detection component 200 directly feeds back the pressure condition of the infusion tube 110 in the peristaltic pump 120 by detecting the driver 135 of the stepper motor 131, that is, it detects the pressure change of the infusion tube 110 in a non-invasive manner. Through the motor magnetic encoding, the speed fluctuation of the rotor 121 of the peristaltic pump 120 can be calculated without affecting the integrity of the infusion tube 110.

[0049] Moreover, a permanent magnet 132 is installed on the axis of the stepper motor 131, and the rotation position of the permanent magnet 132 can be detected by the magnetic encoding sensor 133 to obtain the rotation condition of the peristaltic pump 120, which is convenient for detecting small fluctuations in the speed of the rotor 121. By detecting the rotation speed of the peristaltic pump 120, the blockage condition of the infusion tube 110 in the peristaltic pump 120 can be judged as a second method for judging the blockage condition of the infusion tube 110.

[0050] In this embodiment, the permanent magnet 132 is a radially magnetized circular permanent magnet 132. The circuit board 134 is disposed below the magnetic encoding sensor 133 and connected to the magnetic encoding sensor 133.

[0051] According to an embodiment provided by the utility model, the infusion assembly 100 further includes a housing 140, the peristaltic pump 120 is disposed inside the housing 140, the housing 140 is provided with a guide groove 141, and the infusion tube 110 enters the housing 140 through the guide groove 141 and is arranged in the groove body. In this embodiment, the housing 140 surrounds the peristaltic pump 120, and the guide grooves 141 are symmetrically arranged on both sides of the housing 140, that is, the infusion tube 110 first passes through one guide groove 141 to enter the housing 140, passes through the groove body of the peristaltic pump 120, and then passes out of the housing 140 through another guide groove 141, and the guide groove 141 plays a supporting and positioning role for the infusion tube 110.

[0052] According to an embodiment provided by the utility model, the housing 140 is further provided with a locking component 150, which is provided corresponding to the infusion tube 110 and is suitable for locking the position of the infusion tube 110 on the housing 140. In this embodiment, the housing 140 is further provided with a locking component 150, and the infusion tube 110 can be locked by moving the locking component 150 forward.

[0053] According to an embodiment provided by the utility model, the infusion assembly 100 also includes a cooling liquid source, and the infusion tube 110 is connected to the cooling liquid source. In this embodiment, the infusion tube 110 is connected to the cooling liquid source, and the cooling liquid source can be physiological saline, and the delivery device is used as a physiological saline delivery for cooling the urethra in the steam ablation medical device.

[0054] The steam delivery device delivers water vapor to the prostate through the urethra through the steam delivery needle to achieve ablation of the entire prostate, and the peristaltic pump 120 provides cooling or irrigation fluid such as saline to the steam delivery device to cool the urethra.

[0055] The steam ablation medical device provided by the present invention is described below. The steam ablation medical device described below and the infusion device of the steam ablation medical device described above can be referenced to each other.

[0056] The embodiment of the utility model further provides a steam ablation medical device, comprising an alarm device and an infusion device of the above steam ablation medical device, wherein the alarm device is connected to the pressure detection component 200 .

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An infusion device for a steam ablation medical device, characterized in that: It includes an infusion component and a pressure detection component. The infusion component includes an infusion tube, a peristaltic pump and a drive motor. The infusion tube is passed through the peristaltic pump. The drive motor is connected to the peristaltic pump. The pressure detection component is arranged on the drive motor. The pressure detection component is suitable for detecting the load torque of the drive motor to obtain the pressure change in the infusion tube.

2. The infusion device of the steam ablation medical device according to claim 1, characterized in that: The pressure detection component includes a pressure detection element, a pressure difference calculation element and a variance calculation element. The pressure detection element is suitable for detecting the load torque of the drive motor and issuing time series data. The pressure difference calculation element is suitable for calculating the pressure difference swing data before and after based on the time series data. The variance calculation element is suitable for calculating the variance of the pressure difference swing based on the pressure difference swing data.

3. The infusion device of the steam ablation medical device according to claim 2, characterized in that: The pressure detection component also includes a judgment element and a normal sequence variance storage element. The judgment element is suitable for obtaining the blockage condition of the infusion tube based on the variance of the pressure difference swing and the variance of the normal pressure difference swing pre-stored in the normal sequence variance storage element.

4. The infusion device of the steam ablation medical device according to claim 3, characterized in that: The infusion device of the steam ablation medical equipment further comprises a display component, wherein the display component is connected to the pressure detection assembly and is suitable for displaying the blockage condition of the infusion tube.

5. The infusion device of the steam ablation medical device according to any one of claims 1 to 4, characterized in that: The peristaltic pump comprises a rotor and a pump body. The rotor is provided with a slot body, the infusion tube is arranged in the slot body, the pump body is connected to the rotor, and the rotor is driven to squeeze the infusion tube.

6. The infusion device of the steam ablation medical device according to claim 5, characterized in that: The driving motor includes a stepping motor, a driver, a permanent magnet and a magnetic encoding sensor. The rotor, the shaft of the stepping motor, the permanent magnet and the magnetic encoding sensor are coaxially connected. The driver is connected to the stepping motor, and the pressure detection component is connected to the driver.

7. The infusion device of the steam ablation medical device according to claim 5, characterized in that: The infusion assembly also includes a shell, the peristaltic pump is arranged inside the shell, the shell is provided with a guide groove, and the infusion tube enters the shell through the guide groove and is arranged in the groove body.

8. The infusion device of the steam ablation medical device according to claim 7, characterized in that: The housing is further provided with a locking component, which is arranged corresponding to the infusion tube and is suitable for locking the position of the infusion tube on the housing.

9. The infusion device of the steam ablation medical device according to claim 5, characterized in that: The infusion assembly also includes a cooling liquid source, and the infusion tube is connected to the cooling liquid source.

10. A steam ablation medical device, characterized in that: An infusion device comprising the steam ablation medical device as described in any one of claims 1 to 9.

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