Fluid ablation treatment equipment

Abstract

The invention provides fluid ablation treatment equipment which comprises a handle, a main machine and a liquid path system, the liquid path system is located between the main machine and the handle, the handle and the main machine are connected through a cable, the handle comprises a guide-in sheath tube, a puncture needle is telescopically arranged in the guide-in sheath tube, and a control device is arranged in the handle. The control device controls the puncture needle to slide in the leading-in sheath tube, a steam tube is arranged in the leading-in sheath, a liquid heating device is arranged in the handle, and the liquid heating device is used for heating liquid in the steam tube. The visual minimally invasive interventional operation has the advantages that the sexual function is kept intact, the operation time is very short, the action range is accurate, and the tissue trauma is small.

Description

Technical Field

[0001] The present invention belongs to the field of interventional ablation treatment equipment, and in particular relates to a fluid ablation treatment equipment. Background Art

[0002] For human solid tumors, cancers, and lesions (including but not limited to chronic obstructive pulmonary disease, gastrointestinal lesions, etc.), the energy ablation methods currently used, such as radiofrequency, plasma, microwave, ultrasound, laser, etc., have the following defects: 1. Limited energy conduction, such as charring; 2. Uneven energy generation, with a gradient decrease in the energy center and energy edge, resulting in uneven and incomplete tissue treatment; 3. Large trauma; 4. The puncture piece is too thick to cause damage, and the treatment depth is fixed and cannot be adjusted; 5. It is easy to cause accidental injuries due to misoperation, mis-triggering of needle removal, treatment buttons, etc.; 6. It is necessary to match different brands and models of endoscope systems. Radiofrequency ablation technology mainly relies on radiofrequency therapeutic devices with ablation and cutting functions. The treatment mechanism is mainly thermal effect. When radiofrequency current flows through human tissue, the rapid change of the electromagnetic field causes the polarized water molecules in the tissue to move at high speed, generating heat (i.e., endogenous thermal effect), causing the water inside and outside the cells to evaporate, dry, shrink and fall off, resulting in aseptic necrosis, thereby achieving the treatment purpose. The method of plasma radiofrequency ablation refers to the use of plasma beams generated by plasma blades to remove the patient's diseased tissue. Microwave ablation technology refers to local anesthesia under the guidance of B-ultrasound and CT, and the microwave needle is directly punctured into the tumor site. The polar molecules in the tissue move at high speed under the action of the microwave field, and rub against each other to generate heat. When the temperature in the tumor quickly rises to 120℃~150℃, the cancer cell protein denatures and necrotizes. Ultrasonic ablation surgery uses high-intensity focused ultrasound to make the temperature inside the tumor reach 65 degrees to 100 degrees Celsius to treat various solid tumors. Laser treatment uses laser to generate heat at the tumor tissue. Protein can be coagulated at 60℃, and laser can vaporize tissue at 100℃. The tissue is usually charred within a few seconds, releasing smoke and leaving a hole and ulcer.

[0003] In particular, benign prostatic hyperplasia (BPH) is one of the common diseases in middle-aged and elderly men, and the incidence is increasing with the aging of the global population. The hyperplasia causes the prostate to increase in size, and the hyperplastic prostate squeezes the urethra, leading to a series of urination disorders, such as frequent urination, urgency, weak urine flow, and incomplete urination. These symptoms seriously affect the quality of life of patients. If not treated in time, many serious complications (such as acute urinary retention, stones, renal insufficiency, etc.) may occur, and even endanger the patient's life. Benign prostatic hyperplasia generally occurs after the age of 40. The incidence of BPH in men aged 60 is greater than 50%, and it is as high as 83% at the age of 80. Traditional transurethral resection of the prostate (TURP) is an invasive surgery that has been widely used since the 1920s. The more commonly used ones are the above-mentioned plasma electrosurgical resection and laser resection. However, these products, because of the complete removal of the gland and the damage to the tissue during the operation, will cause other problems for many patients, such as the loss of some sexual function, which seriously affects the quality of life of patients.

[0004] In view of the shortcomings of the above-mentioned prior art, a fluid ablation treatment device is provided, which uses an interventional method to accurately release the steam heat source to the target tissue for ablation. Due to the good tissue penetration and convection of steam water molecules, it can treat human solid tumors, cancers, lesions, etc. In particular, it can ablate excess prostate tissue, reduce the volume, reduce the prostate from squeezing the urethra, and solve the problem of prostate hyperplasia. Summary of the invention

[0005] The present invention provides a fluid ablation treatment device, which solves the problems in the prior art.

[0006] The technical solution of the present invention is implemented as follows: a fluid ablation treatment device, comprising a handle, a main unit and a fluid circuit system, wherein the fluid circuit system is located between the main unit and the handle, and the handle and the main unit are connected by a cable. The handle comprises an introduction sheath, and a puncture needle is retractably arranged in the introduction sheath. A control device is arranged in the handle, and the control device controls the puncture needle to slide in the introduction sheath. A steam pipe is arranged in the introduction sheath, and a liquid heating device is arranged in the handle, and the liquid heating device heats the liquid in the steam pipe.

[0007] As a preferred embodiment, the handle further comprises a handle housing, and a fastener for connecting the introduction sheath is disposed inside the handle housing.

[0008] As a preferred embodiment, the control device includes a connecting rod mechanism rotatably installed in the handle housing, a second limit hook is provided at one end of the connecting rod mechanism, and the other end is transmission-connected with a puncture needle release switch for driving the connecting mechanism to rotate, a first limit hook is slidably installed in the handle housing, a first elastic component is provided between the first limit hook and the handle housing, the first limit hook is fixedly connected to one end of the puncture needle, the first limit hook cooperates with the second limit hook, and will drive the first elastic component to generate a rebound force, a block for blocking the rotation of the connecting rod mechanism is rotatably installed in the handle housing, a protection switch transmission-connected to the block is rotatably installed on the handle housing, and operating the protection switch drives the block to rotate.

[0009] As a preferred embodiment, a first sliding track is provided on the handle housing, the puncture needle release switch is slidably installed in the first sliding track, a second sliding track is opened on the connecting rod mechanism, a connecting head is rotatably installed at one end of the puncture needle release close to the connecting rod mechanism, the connecting head is slidably installed in the second sliding track, and a second elastic component is provided between the puncture needle release and the first sliding track.

[0010] As a preferred implementation, a torsion spring is provided between the connection mechanism and the handle housing, and the torsion spring drives the second limiting hook to fix the first limiting hook through a connecting rod mechanism.

[0011] As a preferred embodiment, the control device includes an electromagnet installed in a handle housing, a magnetic rod is slidably installed in the handle housing, the puncture needle is installed on the magnetic rod, a first elastic component is arranged between the magnetic rod and the handle housing, and the magnetic rod is driven away from the electromagnet by the first elastic component, and a puncture needle release switch for turning on and off the electromagnet is arranged on the handle housing.

[0012] As a preferred embodiment, the liquid heating device includes a metal tube installed in the handle shell, a steam tube slides in the introduction sheath, the steam tube is sleeved in the puncture needle or the air delivery end of the steam tube is sealed and connected to the end of the puncture needle, the output end of the metal tube is connected to the air inlet end of the steam tube, an electromagnetic coil or a metal resistance wire is wound on the metal tube, both ends of the electromagnetic coil or the metal resistance wire are connected to an external circuit, and the surface of the metal tube cuts the alternating magnetic lines to generate alternating current to generate heat, and / or the heat is quickly generated through the heat conduction of the resistance thermal effect of the resistance wire to heat the liquid in the metal tube.

[0013] As a preferred embodiment, the introduction sheath includes a sheath body and a head end outlet, and the introduction sheath and the head end outlet are provided with grooves for the puncture needle and the steam pipe to pass through at a certain angle, and the sheath body includes an upper lumen and a lower lumen, the front end of the upper lumen is used for connecting the puncture needle, and the rear end is connected to the liquid path system, and the lower lumen provides a working lumen for the endoscope.

[0014] As a preferred embodiment, the handle housing includes two symmetrical and / or single housings, the two housings are connected and fixed by a locking key, and the two housings or the single housing can be separated from the fastener by pulling out the locking key.

[0015] As a preferred embodiment, the fluid circuit system includes an injection pump fluid circuit and a peristaltic pump fluid circuit, the injection pump fluid circuit includes a syringe, a transmission device and a syringe pipeline, the peristaltic pump fluid circuit includes a peristaltic pump and a peristaltic pump pipeline, and the host and the peristaltic pump are respectively provided with a contactless dual-channel sensor mechanism for performing data detection on the syringe pipeline and the peristaltic pump pipeline.

[0016] As a preferred embodiment, the introduction sheath is a flexible sheath made of a hard material or a flexible material and can be bent. The wall of the introduction sheath is controlled and bent by one of a plurality of pull-wire structures, a hinged / snake-bone structure, or an electromagnetic, electro-deformable, or thermally-induced deformation unit, or a plurality of series / parallel air bags / liquid bags.

[0017] After adopting the above technical solution, the beneficial effects of the present invention are:

[0018] 1. When water is converted into steam or vapor at about 100°C, a phase change will occur to absorb heat. The energy carried by the resulting water vapor increases several times. The water vapor is quickly and evenly dispersed in the interstitial space. The condensation of water vapor releases the stored heat energy to denature the cell membrane, which leads to immediate cell death and closure of the vascular system. It is reabsorbed by the body's natural healing response, reducing tissue volume and opening the urethra, thereby relieving lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH) caused by obstructive tissue in the prostate region. The visual minimally invasive interventional surgery maintains intact sexual function, and the operation time is very short, the scope of action is precise, and the tissue trauma is small;

[0019] 2. Using the liquid heating device, the fluid can be quickly heated in a limited space to achieve the vaporization effect;

[0020] 3. The puncture needle can be controlled to pop out and retract and lock;

[0021] 4. Rigid or flexible introduction sheaths can be applied to different human structures, such as natural cavities (urethra, trachea, digestive tract), and can further reduce the sheath diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the handle of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the liquid circuit system of the present invention;

[0026] Figure 4 is a schematic diagram of the structure of the control device in Example 1;

[0027] Figure 5 It is a structural schematic diagram of the control device in Example 2;

[0028] Figure 6 It is a schematic diagram of the structure of the control device in Example 3;

[0029] Figure 7 is a schematic structural diagram of a liquid heating device in Embodiment 4;

[0030] Figure 8 The schematic diagram of the structure of the metal sheet and the electromagnetic coil winding is shown in the invention;

[0031] Fig. 9 This is a schematic diagram of the arrangement of metal tubes in Example 6;

[0032] Fig.10 This is a schematic diagram of the arrangement of metal tubes in Example 7;

[0033] Fig.11 This is a schematic diagram of the arrangement of metal tubes in Example 8;

[0034] Fig.12 A three-dimensional diagram of the installation of the contactless dual-channel sensor mechanism of the present invention;

[0035] Fig.13 For the present invention Fig.12 A partial enlarged view of the middle A;

[0036] Fig.14 It is the principle diagram of the infrared sensor of the present invention;

[0037] Fig.15 is a circuit diagram of the ultrasonic sensor of the present invention;

[0038] In the figure, 1, handle; 11, cable; 12, introduction sheath; 22, sheath; 33, puncture needle; 66, head end outlet; 13, handle shell; 55, shell; 56, protection switch; 57, endoscope mounting port; 58, fastener; 59, locking key; 60, pipe joint; 77, recovery key; 88, puncture needle release switch; 99, flushing / treatment switch; 34, control device; 341, first limit hook body; 342, first elastic component; 343, stopper; 344, connecting rod mechanism; 345, second Limiting hook body; 346, first sliding track; 347, torsion spring; 348, electromagnet; 349, magnetic rod; 2, host; 3, fluid system; 31, injection pump fluid circuit; 32, peristaltic pump fluid circuit; 311, syringe; 312, syringe pipeline; 321, peristaltic pump; 322, peristaltic pump pipeline; 55, metal pipe; 66, electromagnetic coil or metal resistance wire; 77, metal sheet; 8, contactless dual-channel sensor mechanism; 81, ultrasonic sensor; 82, probe; 83, infrared sensor; 84, solenoid valve; DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1: Figure 1-Figure 4 As shown, a fluid ablation treatment device includes a handle 1, a main unit 2 and a fluid path system 3, wherein the fluid path system 3 is located between the main unit 2 and the handle 1, and the handle 1 and the main unit 2 are connected via a cable 11. The handle 1 includes an introduction sheath 12, wherein a puncture needle 33 is retractably arranged in the introduction sheath 12, wherein a control device 34 is arranged in the handle 1, and the control device 34 controls the puncture needle 33 to slide in the introduction sheath 12, wherein a steam pipe is arranged in the introduction sheath 12, and a liquid heating device is arranged in the handle 1, and the liquid heating device heats the liquid in the steam pipe.

[0041] The handle 1 further comprises a handle housing 13 , in which a fastener 58 for connecting with the introduction sheath 12 is disposed.

[0042] The control device 34 includes a connecting rod mechanism 344 rotatably installed in the handle housing 13, a second limiting hook body 345 is provided at one end of the connecting rod mechanism 344, and the other end is transmission-connected with a switch for releasing the puncture needle 33 for driving the connecting mechanism to rotate, a first limiting hook body 341 is slidingly installed in the handle housing 13, a first elastic component 342 is provided between the first limiting hook body 341 and the handle housing 13, the first limiting hook body 341 is fixedly connected to one end of the puncture needle 33, the first limiting hook body 341 cooperates with the second limiting hook body 345, and will drive the first elastic component 342 to generate a rebound force, a stopper 343 for blocking the rotation of the connecting rod mechanism 344 is rotatably installed in the handle housing 13, a protection switch 56 transmission-connected to the stopper 343 is rotatably installed on the handle housing 13, and operating the protection switch 56 drives the stopper 343 to rotate.

[0043] A first sliding track 346 is arranged on the handle housing 13, and a switch for releasing the puncture needle 33 is slidably installed in the first sliding track 346. A second sliding track is provided on the connecting rod mechanism 344. A connector is rotatably installed at one end of the releasing puncture needle 33 close to the connecting rod mechanism 344, and the connector is slidably installed in the second sliding track. A second elastic component is arranged between the releasing puncture needle 33 and the first sliding track 346.

[0044] Specifically: the connecting rod mechanism 344 is an L-shaped connecting rod, the first elastic component 342 is a spring, and the first limiting hook body 341 cooperates with the second limiting hook body 345 to stretch the first elastic component 342. The second elastic component is a reset spring, and one end is connected and fixed to the release puncture needle 33, and the other end is connected and fixed to the first sliding track 346.

[0045] In actual operation: operating the protection switch 56 drives the block 343 to rotate, and the connecting rod mechanism 344 is stuck through the block 343, and the switch for releasing the puncture needle 33 is restricted and cannot be pressed. When puncturing, first operate the protection switch 56 to drive the block 343 to rotate, cancel the limit on the connecting rod mechanism 344, release the puncture needle 33 switch by pressing, and move along the first sliding track 346, while compressing the second elastic component, and drive the connector to move inward to the second sliding valley by releasing the puncture needle 33 switch, and drive the connecting rod mechanism 344 to rotate, cancel the limit of the second limiting hook body 345 on the first limiting hook body 341, and drive the puncture needle 33 to pop out under the action of the rebound force of the first elastic component 342.

[0046] Embodiment 2, based on embodiment 1, as Figure 5 As shown, a torsion spring 347 is provided between the connection mechanism and the handle housing 13 , and the torsion spring 347 drives the second limiting hook 345 to fix the first limiting hook 341 through the connecting rod mechanism 344 .

[0047] Specifically: In this embodiment, the first elastic component 342 is a compression spring, and the first elastic component 342 is located on the side of the first limiting hook body 341 away from the puncture needle 33. The switch for releasing the puncture needle 33 is slidably installed on the handle housing 13 through the first sliding track 346, and the end of the switch for releasing the puncture needle 33 is overlapped with the connecting rod mechanism 344.

[0048] Embodiment 3, based on embodiment 1, Figure 6 As shown, the control device 34 includes an electromagnet 348 installed in the handle housing 13, a magnetic rod 349 is slidably installed in the handle housing 13, the puncture needle 33 is installed on the magnetic rod 349, and a first elastic component 342 is arranged between the magnetic rod 349 and the handle housing 13. The magnetic rod 349 is driven away from the electromagnet 348 by the first elastic component 342. A switch for releasing the puncture needle 33 for turning on and off the electromagnet 348 is arranged on the handle housing 13.

[0049] Specifically: a circuit for controlling the electromagnet 348 is arranged in the handle housing 13 , the first elastic component 342 is a reset spring, a load circuit for controlling the liquid heating device to be turned on is arranged on the handle housing 13 , and a first switch contact is arranged on the magnetic rod 349 .

[0050] Specifically: a recovery key 77 is slidably installed on the handle shell 13, and the recovery key 77 corresponds to the first limit hook body 341. When the first limit hook body 341 drives the puncture needle 33 to penetrate, the first limit hook body 341 contacts the recovery key 77. The recovery key 77 is operated to drive the first limit hook body 341 to reset, and then the puncture needle 33 and the front end pipeline are retracted together, so that the second limit hook body 345 cooperates with the first limit hook body 341, and at the same time releases the puncture needle 33. The switch pops up automatically and waits to be triggered for the next pop-up treatment.

[0051] In actual operation: when the switch that releases the puncture needle 33 controls the electromagnet 348 circuit to be energized, the electromagnet 348 generates a magnetic field, attracting the magnetic rod 349 that is integrated with the puncture needle 33 to move, driving the puncture needle 33 out, and at the same time the circuit on the right is connected, and the liquid heating device of the load can be energized for heating; when the electromagnet 348 circuit is de-energized, the magnetic field of the electromagnet 348 disappears, and due to the action of the first elastic component 342, the puncture needle 33 and the magnetic rod 349 return to their original positions, and the load circuit on the right is disconnected, controlling the liquid heating device to stop heating.

[0052] Embodiment 4, based on Embodiment 1, Embodiment 2 or Embodiment 3, as Figure 7 and Figure 8As shown, the liquid heating device adopts at least one heating method selected from electromagnetic induction heating, resistance heating, radio frequency heating, and microwave heating. The liquid heating device includes a metal tube 55 installed in the handle housing 13. A steam tube is slidably arranged in the introduction sheath 12. The steam tube is sleeved in the puncture needle 33 or the air delivery end of the steam tube is sealed and connected to the end of the puncture needle 33. The output end of the metal tube 55 is connected to the air inlet end of the steam tube. An electromagnetic coil or a metal resistance wire 66 is wound around the metal tube 55. Both ends of the electromagnetic coil or the metal resistance wire 66 are connected to an external circuit, and the surface of the metal tube 55 cuts the alternating magnetic lines to generate an alternating current, thereby rapidly generating heat for heating the liquid in the metal tube 55.

[0053] Specifically: a pipe joint 60 is provided on the handle housing 13, and the metal pipe 55 and the liquid pipe are connected through the pipe joint 60, so that the liquid enters the metal pipe 55 through the pipe joint 60, and the metal pipe 55 includes a tubular or sheet shape;

[0054] In actual operation: the electromagnetic coil or metal resistance wire 66 is wound on the metal tube 55, the alternating electric field generates a magnetic field, and the surface of the metal tube 55 cuts the alternating magnetic lines of force to generate alternating current (i.e. eddy current), which quickly generates heat. The fluid to be heated can flow through the metal tube 55 to achieve heating of the liquid.

[0055] Embodiment 5, based on embodiment 4, a container is provided in the handle housing 13, the surface seat of the electromagnetic coil or metal resistance wire 66 in embodiment 4 is insulated, the metal tube 55 is installed in the container, and the resistance heating wire is installed in the container.

[0056] Specifically: the fluid flows in from the liquid pipe inlet, flows into the container through the fracture, flows through the outside of the metal pipe 55, and exchanges heat after contacting the surface-treated electromagnetic coil or metal wire, further increasing the heat exchange efficiency and reducing the external heat and heat dissipation of the device. For the non-electromagnetic induction metal pipe 5555, it is pure resistance heating at this time; for the electromagnetic induction metal pipe 55, it is a superposition of electromagnetic induction and resistance heating. The advantage of this design is that it combines the advantages of electromagnetic heating and resistance heating, with high efficiency and fast heating speed, and it is easy to control the temperature, making the temperature control and switch more accurate, sensitive and stable.

[0057] Embodiment 6, based on embodiment 5, Fig. 9 As shown, the metal tubes 55 are arranged in an S shape in the container, and fences can be added in the arrangement gaps of the metal tubes 55 to increase the stability of the installation of the metal tubes 55;

[0058] Embodiment 7, based on embodiment 5, Fig.10As shown, the metal tubes 55 are S-shaped and symmetrically distributed, or N-shaped, to achieve a single-layer multi-group water tube arrangement, which is evenly arranged in a single-layer limited space. The lengthened metal tubes 55 can increase the heat exchange area, change the direction of the internal fluid, and make the flow mixing more uniform. At the same time, since the winding directions on adjacent metal tubes 55 are opposite, the magnetic fields of adjacent metal tubes 55 are offset in the external magnetic field, reducing the interference of the alternating magnetic field on the external circuit and other electronic equipment in the operating room.

[0059] Embodiment 8, based on embodiment 5, Fig.11 As shown, the metal tubes 55 are arranged in a multi-layer pipe arrangement in the container, but are not limited to arrangements such as vortex tubes, mosquito coil tubes, spiral tubes, multi-layer heat exchange, fin heat exchange, etc.

[0060] Embodiment 9, based on any one of Embodiments 1 to 8, Figure 1-Figure 3 As shown, the host 2 includes a power supply, a circuit board, a connecting line and a pump system, the power supply and the circuit board are located in the housing 55, the pump system is located on the top or side of the chassis of the host 2, and the connecting circuit is connected to the cable 11 from the circuit;

[0061] The liquid circuit system 3 includes an injection pump liquid circuit 31 and a peristaltic pump liquid circuit 32. The injection pump liquid circuit 31 is used to pump the treatment liquid (such as hot steam, liquid medicine, alcohol, acid, etc.) into the lesion in the human body through the control of the pump. The injection pump liquid circuit 31 includes a syringe 311, a transmission device and a syringe pipeline 312. The push pump pushes the liquid into the handle 1 to generate steam. The peristaltic pump liquid circuit 32 includes a peristaltic pump 321 and a peristaltic pump pipeline 322, which can inject the coolant / cleaning liquid into the handle 1 and perfuse it into the area around the lesion for protection and cleaning, and play a role in cleaning the endoscope lens. The peristaltic pump pipeline can be a parallel double pipeline for inflow and outflow, and the outflow pipeline can be used to discharge the liquid. The syringe pipeline and the peristaltic pump pipeline can be independent of each other.

[0062] Embodiment 10, based on embodiment 9, Figure 1-Figure 3 As shown, the introduction sheath 12 includes a sheath body 22 and a head end outlet 66. A groove for the puncture needle 33 and the steam pipe to pass through at a certain angle is provided in the introduction sheath 12 and the head end outlet 66, and this angle is between 30-60°. The sheath body 22 includes an upper cavity tube and a lower cavity tube. The front end of the upper cavity tube is used for connecting the puncture needle 33, and the rear end is connected to the liquid path system 3. The lower cavity tube provides a working cavity for the endoscope.

[0063] The endoscope channel in the introduction sheath 12 plays the role of providing intraoperative visual field. The introduction sheath 12 enters the urethra, and the puncture needle 33 enters the human target tissue (such as the prostate) to form a steam pipeline, and steam is injected into the target tissue. The introduction sheath 12 can be rigid or flexible. When the introduction sheath 12 is flexible, the end of the introduction sheath 12 away from the handle 1 is provided with a flexible end, and the flexible end is provided with an opening, through which the puncture needle 33 passes. The internal channel of the flexible introduction sheath 12 can pass through the flexible endoscope and the flexible puncture needle 33 or the introduction sheath 12 to pass through the working channel of the endoscope, and the flexible introduction sheath 12 passes through the working channel of the soft endoscope.

[0064] The puncture needle 33 is carefully designed according to the different structures of the human body and the steam distribution needs to ensure 1. small trauma, 2. the steam channel is closed to the outside, 3. the steam release position is accurate, 4. the steam convection diffusion is uniform, and 5. the recovery is safe. The puncture needle 33 is made of polymer material or metal, with a length of 0-30mm. Preferably, the polymer material avoids bending and breaking of the needle, and the length is 5-20mm.

[0065] The introduction sheath 12 enters the natural cavity of the human body under the guidance of a visual device (such as a endoscope, ultrasound), and the puncture needle 33 and the steam pipe connected to the rear end pass through the introduction sheath 12 and the head end outlet 66, in the order that the puncture needle 33 first passes through the target human tissue, and the steam pipe follows the track established by the puncture needle 33 to penetrate into the target human tissue. The steam pipe can release steam after retreating a certain distance, or release steam after the puncture needle 33 is withdrawn.

[0066] The handle housing 13 includes two symmetrical housings 55, which are connected and fixed by a locking key 59. The two housings 55 can be separated by pulling out the locking key 59. The two symmetrical housings 55 are connected by a boltless fastener 58, and a locking key 59 groove is provided on the housing 55. The locking key 59 is inserted into the locking key 59 groove to connect and fix the two housings 55.

[0067] The introduction sheath 12 is a flexible sheath made of hard or flexible material and can be bent. The tube wall of the introduction sheath 12 is controlled and bent by a plurality of pull-wire structures, a hinged / snake-bone structure, or an electromagnetic, electro-deformable, or thermally-induced deformation unit, or a plurality of series / parallel air bags / liquid bags.

[0068] Embodiment eleven, on the basis of embodiment ten, an endoscope mounting port 57 and a flushing / treatment switch 99 are installed on the mobile phone housing 55, and the flushing / treatment switch 99 can be designed as a combination switch, that is, the flushing / treatment switch 99 is composed of two main components, which respectively control the flushing / cooling and treatment functions. Only after pressing the flushing button can you continue to press down to trigger the treatment function, so as to ensure that the flushing / cooling is turned on during treatment, otherwise there is a risk of treatment. The logical combination buttons can effectively avoid erroneous operations that do not comply with the surgical operation process.

[0069] Embodiment 12, based on embodiment 9, Figure 12-Figure 15 As shown, the host and the peristaltic pump 321 are respectively provided with a non-contact dual-channel sensor mechanism 8 for performing data detection on the syringe 311 pipeline and the peristaltic pump 321 pipeline. The non-contact dual-channel sensor mechanism 8 includes an ultrasonic sensor 81 installed on the peristaltic pump 321 and the host. The ultrasonic sensor 81 is provided with a probe 82. The lower end of the probe 82 contacts the outer wall of the peristaltic pump 321 pipeline and the syringe 311 pipeline. The peristaltic pump 321 and the host are provided with an infrared sensor 83. The infrared sensor 83 is located on the lower side of the peristaltic pump 321 pipeline and the syringe 311 pipeline. The peristaltic pump 321 pipeline and the syringe 311 pipeline are both provided with an electromagnetic valve 84. The electromagnetic valve 84, the ultrasonic sensor 81 and the infrared sensor 83 are connected through a chip. The ultrasonic sensor 81 detects bubbles, and the infrared sensor 83 detects flow rate. The length of the bubble segment and the opening and closing time of the electromagnetic valve 84 are calculated through the chip. The infrared sensor 83 includes an optical system, a detection element and a conversion circuit.

[0070] Embodiment thirteen, on the basis of embodiment twelfth, the pressure is detected by the ultrasonic sensor 81, the temperature is detected by the infrared sensor 83, the pressure and temperature are monitored by the chip, and the pressure and temperature values ​​are calculated to adjust the state of the treatment fluid, or the same parameter is detected by the ultrasonic sensor 81 and the infrared sensor 83, and verified by the chip.

[0071] Embodiment 14, on the basis of embodiment 12, the cooling / cleaning pipeline is installed in the peristaltic pump 321, and the cooling / cleaning liquid is transported and perfused by the operation of the pump body. The flow rate / flow, pressure, temperature of the cooling / cleaning liquid, and the presence or absence of bubbles therein are accurately detected by the ultrasonic sensor 81 and the infrared sensor 83, so that the flow rate / flow, pressure, and temperature of the cooling / cleaning liquid can be accurately controlled, and bubbles can be removed, making the operation safer and more effective;

[0072] The syringe 311 is filled with therapeutic body fluid or working medium for ablation, which is delivered and infused by pushing the syringe 311. The ultrasonic sensor 81 and the infrared sensor 83 can accurately detect the flow rate / flow, pressure, temperature of the cooling / cleaning fluid, as well as the presence or absence of bubbles therein. The flow rate / flow, pressure, and temperature of the therapeutic fluid can be accurately controlled, and bubbles can be removed, making the operation safer and more effective.

[0073] Embodiment 15, on the basis of embodiment 9, the contactless dual-channel sensor mechanism 8 includes an ultrasonic sensor 81 installed on the peristaltic pump 321 for detecting the pipeline of the peristaltic pump 321, and an electromagnetic valve 84 is installed on the pipeline of the syringe 311 and the pipeline of the peristaltic pump 321. The ultrasonic sensor 81 is connected to the electromagnetic valve 84 through a sensor circuit. When the ultrasonic sensor 81 detects bubbles, the signal is transmitted to the sensor circuit, and the sensor circuit controls the opening and closing of the electromagnetic valve 84. When there are no bubbles, the electromagnetic valve 84 is in an open state, and the liquid is transmitted from the pipeline to the treatment device; when the sensor detects bubbles, the electromagnetic valve 84 is closed, and the liquid segment with bubbles can only be discharged from the discharge pipe.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fluid ablation treatment device, comprising a handle (1), a main unit (2) and a fluid circuit system (3), wherein the fluid circuit system (3) is located between the main unit (2) and the handle (1), the handle (1) and the main unit (2) are connected via a cable (11), the handle (1) comprises an introduction sheath (12), a puncture needle (33) is retractably arranged in the introduction sheath (12), and the device is characterized in that: The handle (1) is provided with a control device (34), and the control device (34) controls the puncture needle (33) to slide in the introduction sheath (12). The introduction sheath (12) is provided with a steam pipe. The handle (1) is provided with a liquid heating device, and the liquid heating device heats the liquid in the steam pipe.

2. A fluid ablation treatment device according to claim 1, characterized in that: The handle (1) also includes a handle shell (13), in which a fastener (58) for connecting to an introduction sheath (12) is arranged. The handle shell (13) includes two symmetrical and / or single shells (55), and the two shells (55) are connected and fixed by a locking key (59). The two shells (55) or the single shell can be separated from the fastener (58) by pulling out the locking key (59).

3. A fluid ablation treatment device according to claim 2, characterized in that: The control device (34) comprises a connecting rod mechanism (344) rotatably mounted in the handle housing (13); a second limit hook (345) is arranged at one end of the connecting rod mechanism (344); and a switch for releasing the puncture needle (33) for driving the connecting rod mechanism to rotate is connected to the other end of the connecting rod mechanism; a first limit hook (341) is slidably mounted in the handle housing (13); a first elastic component (342) is arranged between the first limit hook (341) and the handle housing (13); and the first limit The hook body (341) is fixedly connected to one end of the puncture needle (33); the first limiting hook body (341) cooperates with the second limiting hook body (345) and drives the first elastic component (342) to generate a rebound force; a stopper (343) for blocking the rotation of the connecting rod mechanism (344) is rotatably installed in the handle housing (13); a protection switch (56) transmission-connected to the stopper (343) is rotatably installed on the handle housing (13); and the protection switch (56) is operated to drive the stopper (343) to rotate.

4. A fluid ablation treatment device according to claim 3, characterized in that: The handle housing (13) is provided with a first sliding track (346), the switch for releasing the puncture needle (33) is slidably installed in the first sliding track (346), the connecting rod mechanism (344) is provided with a second sliding track, a connector is rotatably installed at one end of the releasing puncture needle (33) close to the connecting rod mechanism (344), the connector is slidably installed in the second sliding track, and a second elastic component is provided between the releasing puncture needle (33) and the first sliding track (346).

5. A fluid ablation treatment device according to claim 3, characterized in that: A torsion spring (347) is provided between the connection mechanism and the handle housing (13), and the torsion spring (347) drives the second position-limiting hook (345) to fix the first position-limiting hook (341) through a connecting rod mechanism (344).

6. A fluid ablation treatment device according to claim 2, characterized in that: The control device (34) comprises an electromagnet (348) installed in a handle housing (13), a magnetic rod (349) is slidably installed in the handle housing (13), the puncture needle (33) is installed on the magnetic rod (349), a first elastic component (342) is arranged between the magnetic rod (349) and the handle housing (13), and the magnetic rod (349) is driven away from the electromagnet (348) by the first elastic component (342), and a switch for releasing the puncture needle (33) for turning on and off the electromagnet (348) is arranged on the handle housing (13).

7. A fluid ablation treatment device according to any one of claims 1 to 6, characterized in that: The liquid heating device comprises a metal tube (55) installed in a handle housing (13), a steam tube sliding in the introduction sheath tube (12), the steam tube being sleeved in the puncture needle (33) or the gas transmission end of the steam tube being sealed and connected to the end of the puncture needle (33), the output end of the metal tube (55) being connected to the gas inlet end of the steam tube, an electromagnetic coil or a metal resistance wire (66) being wound around the metal tube (55), the two ends of the electromagnetic coil or the metal resistance wire (66) being connected to an external circuit, and the surface of the metal tube (55) cutting the alternating magnetic lines of force generates alternating current to generate heat, and / or heat is quickly generated through heat conduction of the resistance thermal effect of the metal resistance wire to heat the liquid in the metal tube (55).

8. A fluid ablation treatment device according to claim 7, characterized in that: The introduction sheath tube (12) comprises a sheath body (22) and a head end outlet (66), wherein the introduction sheath tube (12) and the head end outlet (66) are provided with a channel for the puncture needle (33) and the steam pipe to pass out at a certain angle, and the sheath body (22) comprises an upper cavity tube and a lower cavity tube, wherein the front end of the upper cavity tube is used for connecting the puncture needle (33) and the rear end is connected to the liquid path system (3), and the lower cavity tube provides a working cavity for the endoscope.

9. A fluid ablation treatment device according to claim 1 or 8, characterized in that: The fluid circuit system (3) comprises a syringe pump fluid circuit (31) and a peristaltic pump fluid circuit (32); the syringe pump fluid circuit (31) comprises a syringe (311), a transmission device and a syringe pipeline (312); the peristaltic pump fluid circuit (32) comprises a peristaltic pump (321) and a peristaltic pump pipeline (322); and the host (2) and the peristaltic pump (321) are respectively provided with a non-contact dual-channel sensor mechanism (8) for performing data detection on the syringe pipeline (312) and the peristaltic pump pipeline (322).

10. The fluid ablation treatment device according to claim 1, characterized in that: The introduction sheath tube (12) is a flexible sheath tube made of a hard material or a flexible material and can be bent. The tube wall of the introduction sheath tube (12) is controlled and bent by a plurality of pull-wire structures, or a hinged / snake-bone structure mechanical control, or an electromagnetic, electro-deformable, or thermally-induced deformation unit, or a plurality of series / parallel air bags / liquid bags.

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