Control method and device of steam ablation device, and steam ablation device

Abstract

The present invention discloses a control method and device for a steam ablation device, and a steam ablation device. The steam ablation device comprises a handle and an insertion structure mounted on the handle, the insertion structure is provided with a retractable and releasable needle, the handle is provided with a steam coil for connecting to a sterile liquid source, the needle is connected to the steam coil, and the control method comprises: in response to the insertion structure entering a target area of ​​a prostate to be treated, controlling the needle to be released; controlling the sterile liquid in the steam coil that is preheated to a critical steam state to be heated to a steam state, and the steam flows out of the target area through the insertion structure according to a first preset condition for treatment; and when an instruction to stop treatment is received, controlling the sterile liquid in the steam coil to be heated to a critical steam state.

Description

Technical Field

[0001] The present invention belongs to the field of medical technology, and in particular relates to a control method and device for a steam ablation device, and the steam ablation device. Background Art

[0002] Benign prostatic hyperplasia (BPH) is a common disease in middle-aged and elderly men, and its prevalence increases with age. At the age of 50, more than half of men have symptoms of BPH, and at the age of 70, nearly 90% of men have symptoms of prostate hypertrophy. The severity of the symptoms also increases with age, with 27% of patients in the 60-70 age group having moderate to severe symptoms and 37% of patients in their 70s having moderate to severe symptoms.

[0003] The prostate glandular structure can be divided into three zones: peripheral zone, transition zone and central zone. The peripheral zone PZ includes about 70% of the volume of the prostate in young men, and 70-80% of cancers originate from the peripheral zone tissue; the central zone CZ surrounds the ejaculatory duct and includes about 20-25% of the prostate volume. The central zone is usually the site of inflammatory processes; the transition zone TZ is the site where benign prostatic hyperplasia develops and includes about 5-10% of the volume of glandular elements in a normal prostate, but can constitute up to 80% of this volume in the case of BPH; the transition zone includes two lateral prostate lobes and the periurethral glandular area. There is a natural barrier around the transition zone, namely the prostatic urethra, the anterior fibromuscular stroma and the fibrous plane between the transition zone and the peripheral zone. The anterior fibromuscular stroma or fibromuscular area is mainly fibromuscular tissue.

[0004] BPH is usually diagnosed when patients have difficulty urinating and seek medical treatment. The main symptoms of BPH are frequent and urgent urination, as well as a significant decrease in flow rate during urination. BPH can also cause urine to be retained in the bladder, which in turn can lead to lower urinary tract infections. Therefore, as the male population ages, BPH can significantly change the quality of life.

[0005] BPH is the result of an imbalance between the continuous production and natural death of the glandular cells of the prostate. The overproduction of these cells leads to an increase in the size of the prostate, most notably in the transition zone that traverses the prostatic urethra.

[0006] In the early stage of BPH, drug treatment can relieve some symptoms. Currently, hormone or anti-hormone drugs, alpha adrenergic receptor blockers, 5α receptor reductase inhibitors, cholesterol inhibitors and other drugs are mostly used. For example, alpha-receptor blockers treat BPH by relaxing the smooth muscle tissue found in the prostate and bladder neck. This type of drug can be proven to be effective before glandular elements cause extreme cell growth in the prostate, but it has great side effects and is easy to become dependent. Long-term use will cause great harm to the cardiovascular and cerebrovascular systems and the immune system. And because Western medicine has not yet fully understood the root cause and pathogenesis of prostate hyperplasia, Western medicine is mainly used to improve and relieve symptoms rather than to cure prostate hyperplasia.

[0007] The more advanced stage of BPH can only be treated by surgery or minimally invasive ablation device intervention. Various methods utilizing electrosurgery or mechanical tissue aspiration and cryoablation of intracapsular prostate tissue have been developed. In many cases, such interventions provide only short-term relief, and these treatments usually cause significant discomfort and recurrence rates before and after surgery due to greater trauma, etc.

[0008] In addition, the disposable prostate thermal steam treatment device for the treatment of BPH, which has been used in clinical practice, has the advantages of minimally invasive and short operation time. The product consists of a steam thermal ablation gun, a water delivery device and a pin connector for water delivery. The steam thermal ablation gun consists of a handle (including a steam generating device), a sheath (including a steam transmission catheter), a sterile liquid tube, a flushing tube, a drain tube, etc. A rapid heating radio frequency coil is used to heat the water outside the body into steam using radio frequency energy. The steam is injected into the tissue through the opening of the puncture needle and rapidly diffuses through the gaps between tissue cells. The steam begins to cool and condense immediately after contacting the tissue. The stored heat energy is released, causing the cell membrane to slightly denature, resulting in instant cell death. Over time, the denatured tissue will be absorbed by the body. The steam condensation process also causes the blood vessels in the ablation treatment area to collapse rapidly, achieving bloodless surgery. It is suitable for men aged 50 years or older (inclusive) with a prostate volume of 30-80cm3 (with or without hyperplasia of the central area and / or middle lobe of the prostate). The puncture depth of the front protrusion of the steam delivery needle into the prostate tissue is about 10mm.

[0009] When using current steam ablation equipment, each time the doctor releases the needle into the target prostate tissue, he or she activates the radio frequency energy by pressing the manual switch to convert the sterile liquid into steam. However, during the treatment interval between each release of the needle, the needle tube and the protective sheath will be passively cooled due to contact with the flushing saline solution. If this process is waited for too long, the steam in the needle tube will condense, causing the temperature in the needle tube to drop. During the next excitation, the radio frequency coil needs to heat the steam coil from a lower temperature to above 100°C to convert the sterile liquid into high-temperature steam. This process is easily caused by heating from different temperatures (depending on the length of water cooling time) to above 100°C, which can easily result in different steam release treatment cycles, uneven and discontinuous energy application to the prostate tissue, and affect the treatment effect. Summary of the invention

[0010] The present invention provides a control method and device for a steam ablation device, and a steam ablation device, aiming to solve the problem in the prior art that if the waiting time of the steam ablation device is too long, the steam in the needle tube will condense, causing the temperature in the needle tube to drop, and the steam treatment cycle will be released differently at the next stimulation, resulting in uneven and discontinuous application of energy to the prostate tissue, affecting the treatment effect.

[0011] In order to achieve the above-mentioned object, the present invention provides a control method of a steam ablation device, wherein the steam ablation device comprises a handle and an insertion structure mounted on the handle, wherein the insertion structure is provided with a retractable and releasable needle, wherein a steam coil for connecting to a sterile liquid source is provided in the handle, wherein the needle is connected to the steam coil, and wherein the control method comprises:

[0012] In response to the insertion structure entering the target area of ​​the prostate to be treated, controlling the release of the needle;

[0013] Controlling the sterile liquid preheated to a critical steam state in the steam coil to be heated to a steam state, and the steam flows out of the target area through the insertion structure according to a first preset condition to perform treatment;

[0014] When an instruction to stop treatment is received, the sterile fluid in the steam coil is controlled to be heated to a critical steam state.

[0015] Preferably, in the control method of the steam ablation device, the step of controlling the sterile liquid preheated to a critical steam state in the steam coil to be heated to a steam state, and the steam flows out of the target area through the insertion structure according to a first preset condition to perform treatment, comprises:

[0016] The sterile liquid preheated to a critical steam state in the steam coil is controlled to be heated to a steam state, and the steam flows out of the target area through the insertion structure at a flow rate of 0.42 ml / 9 s for treatment for 9 s to 15 s.

[0017] Preferably, in the control method of the steam ablation device, the step of controlling the sterile liquid preheated to the critical steam state in the steam coil to be heated to the steam state, and the steam flows out of the target area through the insertion structure at a flow rate of 0.42 ml / 9 s to perform treatment for 9 s-15 s, comprises:

[0018] The sterile liquid preheated to a critical steam state in the steam coil is controlled to be heated to above 103° C., and the steam flows out of the target area through the insertion structure at a flow rate of 0.42 ml / 9 s for treatment for 9 s to 15 s.

[0019] Preferably, in the control method of the steam ablation device, the step of controlling the sterile liquid in the steam coil to be heated to a critical steam state when receiving an instruction to stop treatment comprises:

[0020] When an instruction to stop treatment is received, the flow rate of the sterile liquid source into the steam coil is controlled, and the sterile liquid entering the steam coil is heated to a critical steam state.

[0021] Preferably, in the control method of the steam ablation device, before the step of controlling the sterile liquid preheated to a critical steam state in the steam coil to be heated to a steam state, and the steam flows out of the target area through the insertion structure according to a first preset condition for treatment, the control method includes:

[0022] The sterile liquid for flushing is controlled to enter the steam coil, and the sterile liquid in the steam coil is heated to a critical steam state.

[0023] Preferably, in the control method of the steam ablation device, the step of controlling the release of the flushing sterile liquid into the steam coil and heating the sterile liquid in the steam coil to a critical steam state includes:

[0024] The sterile liquid flushed by controlled release enters the steam coil, and the sterile liquid in the steam coil is heated and maintained at 90°C-100°C.

[0025] Preferably, in the control method of the steam ablation device, before the step of controlling the release of the needle in response to the insertion structure entering the target area of ​​the prostate to be treated, the method comprises:

[0026] Acquiring image information of a target area of ​​a patient to be treated;

[0027] The target area is determined according to the image information.

[0028] In order to achieve the above object, the present invention further provides a control device for a steam ablation device, the control device for the steam ablation device comprising:

[0029] a first control unit, for controlling the release of the needle in response to the insertion structure entering the target area of ​​the prostate to be treated;

[0030] A second control unit is used to control the sterile liquid preheated to a critical steam state in the steam coil to be heated to a steam state, and the steam flows out of the target area through the insertion structure according to a first preset condition to perform treatment;

[0031] The third control unit is used to control the sterile liquid in the steam coil to be heated to a critical steam state when receiving an instruction to stop treatment.

[0032] In order to achieve the above object, the present invention further provides a steam ablation device, the steam ablation device comprising:

[0033] at least one processor; and,

[0034] a memory communicatively connected to the at least one processor; wherein,

[0035] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can perform the control method of the steam ablation device.

[0036] In order to achieve the above-mentioned object, the present invention also provides a computer-readable storage medium storing a computer program, characterized in that when the computer program is executed by a processor, the control method of the above-mentioned steam ablation device is implemented.

[0037] The technical solution provided by the present invention has at least the following advantages:

[0038] The control method of the steam ablation device provided by the present invention controls the release of the needle in response to the insertion structure entering the target area of ​​the prostate to be treated; controls the sterile liquid pre-heated to the critical steam state in the steam coil to be heated to the steam state, and the steam flows out of the target area through the insertion structure according to the first preset condition for treatment; when an instruction to stop treatment is received, the sterile liquid in the steam coil is controlled to be heated to the critical steam state, that is, in each treatment, it is only necessary to heat the sterile liquid from the sterile liquid in the critical steam state to the steam state, the heating speed is fast, the output energy is uniform and stable, and the energy application is efficient.

[0039] Furthermore, in terms of uniformity of energy output, compared with the treatment intervals on the market without a temperature maintenance function, the present invention preheats the sterile liquid in the steam coil to a critical steam state, and heats the sterile liquid from the critical steam state to the steam state during treatment, so that the output energy is more uniform and stable, without the need for large-scale heating;

[0040] Furthermore, in terms of heating speed and treatment efficiency, compared with the current methods of heating from low temperature to water vapor temperature, the present invention adopts heating from critical steam state to steam state (for example, heating from 100°C to 103°C), which has fast heating speed and efficient energy application.

[0041] Furthermore, in terms of the pressure stability in the needle tube, compared with the treatment intervals on the market that have no temperature maintenance function, the present invention controls the sterile liquid in the steam coil to be heated to a critical steam state when receiving an instruction to stop treatment, so that the pressure in the steam needle remains stable, without backflow and backsuction of tissue residues due to unstable pressure, and the pressure in the needle tip is stable, without backflow and backsuction of tissue residues. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of a control method for a steam ablation device according to a first embodiment of the present invention;

[0044] Figure 2 A schematic diagram of a second embodiment of a control method for a steam ablation device according to the present invention;

[0045] Figure 3 is a schematic diagram of a third embodiment of a control method for a steam ablation device according to the present invention;

[0046] Figure 4 A schematic diagram of an embodiment of a control device for a steam ablation device according to the present invention;

[0047] Figure 5 is a schematic diagram of an embodiment of a steam ablation device;

[0048] Figure 6 FIG. 4 is a schematic diagram of another embodiment of a steam ablation device.

[0049] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] In the embodiments of the present invention, the term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0051] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0052] In the embodiments of the present invention, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0053] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, it can be understood by those skilled in the art that in the embodiments of the present invention, many technical details are proposed in order to enable the reader to better understand the present invention. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present invention can also be implemented. The division of the following embodiments is for the convenience of description and should not constitute any limitation on the specific implementation of the present invention. The various embodiments can be combined and referenced with each other under the premise of no contradiction.

[0054] In order to solve the above problems, the present embodiment relates to a control method of a steam ablation device, which can be applied to the steam ablation device. The steam ablation device usually includes a processing device, such as a terminal. The terminal can be a desktop computer, a tablet computer, a notebook, and other electronic devices with data processing capabilities. No specific restrictions are made here.

[0055] The following is an explanation of the implementation details of the control method of the steam ablation device according to the first embodiment of the present invention. The following content is only the implementation details provided for the convenience of understanding and is not necessary for the implementation of this solution.

[0056] The specific process of this implementation is as follows: Figure 1 See Figure 1 and Figure 6 The steam ablation device comprises a handle and an insertion structure mounted on the handle, the insertion structure is provided with a retractable and releasable needle, the handle is provided with a steam coil for connecting to a sterile liquid source, the needle is connected to the steam coil, and the control method comprises:

[0057] Step S100, in response to the insertion structure entering the target area of ​​the prostate to be treated, controlling the release of the needle;

[0058] It should be understood that prostate thermal steam ablation treatment is one of the current minimally invasive surgical methods for prostate hyperplasia, with the advantages of less trauma, shorter time, higher safety, and faster recovery. The operation time is short, mainly using a guide needle through the urethra to inject sterile liquid steam into the prostate hyperplasia tissue, causing the hyperplastic tissue to gradually lose its activity, and then apoptosis and necrosis. The steam ablation equipment also includes a steam generating device, a sheath (including a steam transmission catheter), a sterile water pipe, a flushing pipe, a drain pipe, etc. After the insertion structure enters the target area of ​​the prostate to be treated, the needle is released, and at this time, the sterile liquid steam can flow out of the needle through the insertion structure, and the sterile liquid steam is injected into the target area, causing the target area to lose its activity.

[0059] It should be noted that the target area is the area that needs to be treated. After the target area is determined to be needed, the target area is treated. For example, if the left side of the prostate is hyperplastic, the number of treatments is determined according to the degree of hyperplasia. If the prostate is hyperplastic, two injections are required (i.e., two treatments). The specific location of the needle can be selected to select the thicker area of ​​the target area.

[0060] Furthermore, in other embodiments, before the insertion structure enters the target area, a sterile liquid for flushing (physiological saline in this embodiment) can be released, and the needle can be released to stimulate radio frequency energy to generate water vapor to complete pre-treatment; before entering the human urethra, the prostate target area is found and the needle is released.

[0061] The target area can be determined by an operator (usually a doctor) based on images observed by an endoscope, or can be automatically identified by obtaining a color ultrasound image, for example, by comparing the volume of each part of the prostate with the normal volume based on the color ultrasound image to determine the target area. The specific method of determination is not specifically limited here.

[0062] Step S200, controlling the sterile liquid preheated to a critical steam state in the steam coil to be heated to a steam state, and the steam flows out of the target area through the insertion structure according to a first preset condition to perform treatment;

[0063] It should be understood that by directly heating the sterile liquid in the steam coil from the critical steam state to the steam state, the heating speed is fast, the output energy is uniform and stable, and the energy application is efficient. Taking sterile water as an example of sterile liquid, sterile water will become a steam state when it reaches above 103°C, and the critical steam state can be defined at 90°C-100°C. The critical steam state can be defined as a difference of about 5° in the steam state. In other embodiments, it can also be set according to the heating power in the steam generating device. Assuming that the heating power of the steam generating device is large, the temperature of the critical steam state can be set smaller; assuming that the heating power of the steam generating device is small, the temperature of the critical steam state can be set larger. The temperature of the critical steam state can also be determined by the user according to needs, and no specific restrictions are made here.

[0064] The first preset condition may include the steam flow rate and the treatment time. Generally, the treatment time should not be too long, otherwise it may easily scald the patient. In this embodiment, the first preset condition includes: the steam flow rate is 0.42 ml / 9s, and the treatment time is 9s-15s. The treatment time may also be 10s, 11s, 12s, or 13s, and may also be determined according to different conditions.

[0065] In specific implementation, the step S200 includes:

[0066] Step S210, controlling the sterile liquid preheated to the critical steam state in the steam coil to be heated to the steam state, and the steam flows out of the target area through the insertion structure at a flow rate of 0.42 ml / 9s for treatment for 9s-15s.

[0067] More specifically, the sterile liquid preheated to a critical steam state in the steam coil is controlled to be heated to above 103° C., and the steam flows out of the target area through the insertion structure at a flow rate of 0.42 ml / 9 s for treatment for 9 s-15 s.

[0068] It should be understood that if the flow rate of the sterile liquid is too fast, part of the sterile liquid will not be heated to the steam state in time, which will cause the steam to flow out unevenly. In this embodiment, the flow rate of the steam is controlled to be 0.42ml / 9s. The treatment time is controlled within 9s-15s to achieve the treatment effect while preventing the patient from being scalded. In other embodiments, it can also be determined according to different conditions.

[0069] In addition, the steam coil can be arranged in a spiral or other winding manner, which can save volume while increasing the storage capacity of the sterile liquid.

[0070] Step S300, when an instruction to stop treatment is received, the sterile liquid in the steam coil is controlled to be heated to a critical steam state.

[0071] It should be understood that the instruction to stop treatment can be an instruction to stop treatment sent by the operator (usually a doctor), or it can be an instruction that the treatment time has expired, and no specific restrictions are made here. When the instruction to stop treatment is received, the sterile liquid in the steam coil is controlled to no longer be heated to a steam state, but to be heated to a critical steam state and maintained. At this time, the steam ablation device stops stimulating energy and enters standby mode. The pressure inside the needle can be maintained by heating the sterile liquid in the steam coil to a critical state, and the pressure inside the needle is stable, without reflux and backflow of tissue residues. Assuming that when the instruction to stop treatment is received, the heating of the sterile liquid is stopped, and the inside of the needle suddenly changes from very hot to very cold, it is easy to clog the tube, forming a negative pressure, and sucking the tissue in. The next time it is used, it needs to be cleaned before it can be used.

[0072] Specifically, the step S300 includes:

[0073] Step S310, when an instruction to stop treatment is received, the flow rate of the sterile liquid source flowing into the steam coil is controlled, and the sterile liquid entering the steam coil is heated to a critical steam state.

[0074] It should be noted that when an instruction to stop treatment is received, the flow rate of the sterile liquid can be reduced, for example, the flow rate of the sterile liquid is 0.01 ml / min.

[0075] More specifically, when an instruction to stop treatment is received, the output of low current (eg, 1A) radio frequency energy is controlled to heat the sterile fluid to a critical steam state, thereby maintaining the temperature of the steam coil and the pressure of the needle tube.

[0076] By controlling the sterile liquid in the steam coil to heat to a critical steam state when the treatment is stopped, normal treatment radio frequency energy can be directly stimulated during the next treatment to repeat the treatment cycle of the tissue.

[0077] The control method of the steam ablation device provided by the present invention controls the release of the needle in response to the insertion structure entering the target area of ​​the prostate to be treated; controls the sterile liquid pre-heated to the critical steam state in the steam coil to be heated to the steam state, and the steam flows out of the target area through the insertion structure according to the first preset condition for treatment; when an instruction to stop treatment is received, the sterile liquid in the steam coil is controlled to be heated to the critical steam state, that is, in each treatment, it is only necessary to heat the sterile liquid from the sterile liquid in the critical steam state to the steam state, the heating speed is fast, the output energy is uniform and stable, and the energy application is efficient.

[0078] Furthermore, in terms of uniformity of energy output, compared with the treatment intervals on the market without a temperature maintenance function, the present invention preheats the sterile liquid in the steam coil to a critical steam state, and heats the sterile liquid from the critical steam state to the steam state during treatment, so that the output energy is more uniform and stable, without the need for large-scale heating;

[0079] Furthermore, in terms of heating speed and treatment efficiency, compared with the current methods of heating from low temperature to water vapor temperature, the present invention adopts heating from critical steam state to steam state (for example, heating from 100°C to 103°C), which has fast heating speed and efficient energy application.

[0080] Furthermore, in terms of the pressure stability in the needle tube, compared with the treatment intervals on the market that have no temperature maintenance function, the present invention controls the sterile liquid in the steam coil to be heated to a critical steam state when receiving an instruction to stop treatment, so that the pressure in the steam needle remains stable, without backflow and backsuction of tissue residues due to unstable pressure, and the pressure in the needle tip is stable, without backflow and backsuction of tissue residues.

[0081] like Figure 2 As shown, in the second embodiment of the control method of the steam ablation device provided by the present invention, before the step S200, the control method includes:

[0082] Step S110, controlling the release of the flushing sterile liquid into the steam coil, and heating the sterile liquid in the steam coil to a critical steam state.

[0083] It should be noted that step S110 may be after step S100 and before step S200, or before step S100, and no specific limitation is made here.

[0084] It should be understood that after the sterile liquid enters the steam coil, the sterile liquid in the steam coil is heated to the critical steam state for preheating, which can effectively improve the heating efficiency during treatment. During treatment, the system only needs to heat the sterile liquid in the steam coil to the temperature of the steam state (for example, in this embodiment, the temperature of the steam state is 103°C), and the output energy is uniform and stable without large-scale temperature changes.

[0085] More specifically, step S110 includes:

[0086] Step S111, controlling the release of the flushing sterile liquid into the steam coil, heating the sterile liquid in the steam coil and maintaining it at 90°C-100°C.

[0087] like Figure 3 As shown, the third embodiment of the control method of the steam ablation device provided by the present invention, before step S100, includes:

[0088] Step S120, acquiring image information of a target area of ​​the patient to be treated;

[0089] It should be understood that the color ultrasound image of the target area of ​​the patient may be obtained; in other embodiments, the image may also be obtained by using an endoscope at the front end of the insertion structure.

[0090] Step S130: determining the target area according to the image information.

[0091] It should be understood that the volume of each part of the prostate can be obtained based on the color ultrasound image and compared with the normal size to determine the target area.

[0092] The area to be treated is determined based on the current volume and normal volume of each part of the prostate. Taking the left lobe of the prostate as an example, the difference between the current volume of the left lobe and the normal volume may be greater than the first threshold, or the ratio of the current volume of the left lobe to the normal volume may be greater than the second threshold, then the left lobe is considered to be the area to be treated. In other embodiments, the first threshold and the second threshold may be determined based on different parts of the prostate, and no specific limitation is made here. For example, for the left lobe, the first threshold is 10 cm 3 ; For the right lobe, the first threshold is 12cm 3 .

[0093] The number of treatments may also be determined, for example, by determining the distance from the bladder neck to the verumontanum based on the image information; and then determining the number of treatments for the area to be treated based on the distance from the bladder neck to the verumontanum.

[0094] It should be understood that the target area may include one or more of the left lobe, the right lobe, the posterior lobe, etc. Specifically, the number of treatments for each lobe of the target area is determined based on whether the distance from the bladder neck to the verumontanum is greater than a third threshold, as shown in Table 1, which illustrates an embodiment of a treatment plan.

[0095] Table 1 Treatment frequency plan

[0096]

[0097]

[0098] Assuming that the target area includes the left lobe, the number of treatments of the left lobe can be determined according to the distance from the bladder neck to the verumontanum, for example, the number of treatments of the left lobe can be determined according to Table 1.

[0099] In addition, if the central zone hyperplasia causes the bladder neck to rise, the number of treatments for the enlarged central zone with a distance from the bladder neck to the verumontanum less than 2 cm is 1, and the number of treatments for the enlarged central zone with a distance from the bladder neck to the verumontanum greater than 2 cm is 2.

[0100] like Figure 4 As shown, a first embodiment of a control device for a steam ablation device provided by the present invention, the control device for a steam ablation device comprises:

[0101] A first control unit 410, for controlling the release of the needle in response to the insertion structure entering the target area of ​​the prostate to be treated;

[0102] The second control unit 420 is used to control the sterile liquid preheated to a critical steam state in the steam coil to be heated to a steam state, and the steam flows out of the target area through the insertion structure according to the first preset condition to perform treatment;

[0103] The third control unit 430 is used to control the sterile liquid in the steam coil to be heated to a critical steam state when receiving an instruction to stop treatment.

[0104] In order to achieve the above object, the present invention also provides a steam ablation device, such as Figure 5 As shown, the steam ablation device includes at least one processor 501; and a memory 502 communicatively connected to the at least one processor 501; wherein the memory 502 stores instructions executable by the at least one processor 501, and the instructions are executed by the at least one processor 501 so that the at least one processor 501 can execute a control method of the steam ablation device.

[0105] The memory 502 and the processor 501 are connected in a bus manner, and the bus may include any number of interconnected buses and bridges, and the bus connects various circuits of one or more processors 501 and the memory 502 together. The bus can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. The data processed by the processor 501 is transmitted on a wireless medium via an antenna, and further, the antenna also receives data and transmits the data to the processor 501.

[0106] The processor 501 is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 502 can be used to store data used by the processor 501 when performing operations.

[0107] In order to achieve the above-mentioned object, the present invention provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the control method of the above-mentioned steam ablation device is implemented.

[0108] That is, those skilled in the art can understand that all or part of the steps in the above-mentioned implementation method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor to execute all or part of the steps of the method described in each implementation of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0109] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, ordinary technicians in this field can make other different forms of changes or modifications without creative work, which should fall within the scope of protection of the present invention.

Claims

1. A control device for a steam ablation device, the steam ablation device comprising a handle and an insertion structure mounted on the handle, the insertion structure being provided with a retractable and releasable needle, the handle being provided with a steam coil for connecting to a sterile liquid source, the needle being in communication with the steam coil, characterized in that: include: a first control unit, for controlling the release of the needle in response to the insertion structure entering the target area of ​​the prostate to be treated; A second control unit is used to control the sterile liquid preheated to a critical steam state in the steam coil to be heated to a steam state, and the steam flows out of the target area through the insertion structure according to a first preset condition for treatment. The second control unit is also configured to control the sterile liquid preheated to a critical steam state in the steam coil to be heated to above 103° C., and the steam flows out of the target area through the insertion structure at a flow rate of 0.42 ml / 9 s for 9s-15s for treatment; A third control unit is used to control the sterile liquid in the steam coil to be heated to a critical steam state when receiving an instruction to stop treatment. The third control unit is also configured to control the flow rate of the sterile liquid source into the steam coil when receiving an instruction to stop treatment, and heat the sterile liquid entering the steam coil to a critical steam state; An acquisition unit is configured to acquire image information of a target area of ​​a patient to be treated; determine the target area according to the image information, and the acquisition unit is configured to determine the distance from the bladder neck to the verumontanum according to the image information; Then, the number of treatments for the area to be treated is determined according to the distance from the bladder neck to the verumontanum; Wherein, determining the target area according to the image information includes: According to the color Doppler ultrasound image, the current volume of each part of the prostate is obtained; according to the current volume of each part of the prostate and the normal volume, the area to be treated is determined; when the difference between the current volume of the left lobe and the normal volume is greater than a first threshold, the left lobe is determined to be the area to be treated; when the ratio of the current volume of the left lobe to the normal volume is greater than a second threshold, the left lobe is determined to be the area to be treated; When the distance from the bladder neck to the verumontanum is ≤2 cm, the number of treatments for each lobe of the target area is determined to be 1-2 times; When the distance from the bladder neck to the verumontanum is 2cm-3cm, the number of treatments for each lobe of the target area is determined to be 2-3 times; When the distance from the bladder neck to the verumontanum was ≥3 cm, the number of treatments for each lobe of the target area was determined to be 3-4 times; When central zone hyperplasia causes elevation of the bladder neck, the number of treatments for the enlarged central zone with a distance from the bladder neck to the verumontanum <2 cm is 1; When central zone hyperplasia leads to elevation of the bladder neck, the number of treatments for the enlarged central zone with a distance from the bladder neck to the verumontanum > 2 cm is 2.

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