Fluid ablation treatment equipment
Fluid ablation therapy equipment solves the problems of uneven energy distribution and large trauma in existing ablation methods by precisely releasing steam heat sources, achieving minimally invasive and precise tissue ablation. It is suitable for human solid tumors and benign prostatic hyperplasia, and can maintain sexual function.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU HUACHAO MEDICAL TECH CO LTD
- Filing Date
- 2024-12-18
- Publication Date
- 2026-04-21
AI Technical Summary
Existing energy ablation methods suffer from problems such as limited and uneven energy conduction, significant trauma, high risk of misoperation, and the need to match different brands of endoscope systems. Traditional prostatectomy affects quality of life and sexual function.
The fluid ablation therapy device uses a steam heat source to precisely release ablation onto the target tissue. Steam is generated by a liquid heating device, combined with a controllable puncture needle and an insertion sheath, to achieve minimally invasive interventional treatment.
It achieves uniformity and precision in tissue ablation, reduces trauma, preserves sexual function, has a short operation time, is suitable for different human body structures, and the device can adjust the treatment depth.
Smart Images
Figure CN224140920U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of interventional ablation therapy equipment, and specifically relates to a fluid ablation therapy device. Background Technology
[0002] For solid tumors, cancers, and lesions in the human body (including but not limited to COPD, gastrointestinal tract lesions, etc.), current energy ablation methods, such as radiofrequency, plasma, microwave, ultrasound, and laser, have the following drawbacks: 1. Limited energy conduction, such as charring; 2. Uneven energy generation, with a gradient decrease from the energy center to the energy edge, leading to uneven and incomplete tissue treatment; 3. Significant trauma; 4. Damage caused by excessively thick puncture instruments, and the treatment depth is fixed and cannot be adjusted; 5. Prone to accidental operation, such as accidental needle withdrawal or pressing treatment buttons; 6. Requires matching with different brands and models of endoscope systems. Radiofrequency ablation technology mainly relies on radiofrequency therapy devices with ablation and cutting functions. The treatment mechanism is mainly a thermal effect. When radiofrequency current flows through human tissue, the rapid change in the electromagnetic field causes 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 slough off, resulting in aseptic necrosis, thereby achieving the therapeutic purpose. Plasma radiofrequency ablation involves using a plasma beam generated by a plasma ablation device to remove diseased tissue. Microwave ablation, under local anesthesia guided by ultrasound or CT scans, involves inserting a microwave needle directly into the tumor. The polar molecules within the tissue move at high speed under the influence of the microwave field, generating heat through friction. When the temperature rapidly rises to 120°C-150°C within the tumor, cancer cell proteins denature and die. Ultrasonic ablation uses high-intensity focused ultrasound to achieve temperatures of 65°C to 100°C within the tumor, treating various solid tumors. Laser therapy utilizes lasers to generate heat at the tumor site. At 60°C, proteins can coagulate; at 100°C, the laser can vaporize the tissue. The tissue is typically charred within seconds, releasing smoke and leaving a hole and ulcer.
[0003] In particular, benign prostatic hyperplasia (BPH) is a common disease among middle-aged and elderly men, and its incidence is increasing with the aging of the global population. The enlarged prostate gland compresses the urethra, leading to a series of urinary dysfunction symptoms such as urinary frequency, urgency, weak urine stream, and incomplete emptying. These symptoms severely impact the patient's quality of life, and without timely treatment, can lead to many serious complications (such as acute urinary retention, stones, and renal insufficiency), and even endanger the patient's life. Benign prostatic hyperplasia generally occurs after age 40, with an incidence rate exceeding 50% in men aged 60 and reaching as high as 83% by age 80. Based on this, it is estimated that there are 84 million BPH patients in my country. Traditional transurethral resection of the prostate (TURP) is an invasive surgery widely used since the 1920s. Currently, the most commonly used methods are electrocautery and laser resection. However, these products, due to the complete removal of the glands and the damage to tissues during the surgery, can cause other problems for many patients, such as loss of some sexual function, which seriously affects their quality of life.
[0004] To address the shortcomings of existing technologies, a fluid ablation therapy device is provided. This device utilizes an interventional approach to precisely release a steam heat source onto targeted tissue for ablation. Due to the excellent tissue penetration and convection properties of steam water molecules, it can treat solid tumors, cancers, and lesions in the human body. In particular, it is effective in ablating excess prostate tissue, reducing its size, alleviating prostate compression of the urethra, and resolving benign prostatic hyperplasia (BPH). Utility Model Content
[0005] This invention proposes a fluid ablation therapy device that solves the problems in the prior art.
[0006] The technical solution of this utility model is implemented as follows: A fluid ablation therapy device includes a handle, a main unit, and a fluid circuit system. The fluid circuit system is located between the main unit and the handle. The handle and the main unit are connected by a cable. The handle includes an inlet sheath, in which a puncture needle is retractably disposed. A control device is disposed within the handle, which controls the puncture needle to slide within the inlet sheath. A steam tube is disposed within the inlet sheath. A liquid heating device is disposed within the handle, which heats the liquid in the steam tube.
[0007] In a preferred embodiment, the handle further includes a handle housing, within which fasteners for connecting the inlet sheath are provided.
[0008] In a preferred embodiment, the control device includes a linkage mechanism rotatably mounted within the handle housing. One end of the linkage mechanism is provided with a second limiting hook, and the other end is tractively connected to a release puncture needle switch for driving the connecting mechanism to rotate. A first limiting hook is slidably mounted within the handle housing. A first elastic component is provided between the first limiting hook and the handle housing. The first limiting hook is fixedly connected to one end of the puncture needle. The first limiting hook cooperates with the second limiting hook and drives the first elastic component to generate a rebound force. A stop block for blocking the rotation of the linkage mechanism is rotatably mounted within the handle housing. A protection switch rotatably mounted on the handle housing and tractively connected to the stop block is tractively connected. Operating the protection switch drives the stop block to rotate.
[0009] In a preferred embodiment, the handle housing is provided with a first sliding rail, the release puncture needle switch is slidably installed in the first sliding rail, the linkage mechanism is provided with a second sliding rail, a connector is rotatably installed at one end of the release puncture needle near the linkage mechanism, the connector is slidably installed in the second sliding rail, and a second elastic component is provided between the release puncture needle and the first sliding rail.
[0010] In a preferred embodiment, a torsion spring is provided between the connecting mechanism and the handle housing, and the torsion spring drives the second limiting hook to fix the first limiting hook through a linkage mechanism.
[0011] In a preferred embodiment, the control device includes an electromagnet installed inside the handle housing, a magnetic rod slidably mounted inside the handle housing, a puncture needle mounted on the magnetic rod, a first elastic component provided between the magnetic rod and the handle housing, the first elastic component driving the magnetic rod away from the electromagnet, and a puncture needle release switch provided on the handle housing for opening and closing the electromagnet.
[0012] In a preferred embodiment, the liquid heating device includes a metal tube installed inside the handle housing, a steam tube sliding inside the inlet sheath, the steam tube being sleeved inside the puncture needle or the steam tube's outlet end being sealed and connected to the end of the puncture needle, the output end of the metal tube being connected to the steam tube's inlet end, and an electromagnetic coil or metal resistance wire wound around the metal tube. The two ends of the electromagnetic coil or metal resistance wire are connected to an external circuit, causing the surface of the metal tube to cut alternating magnetic lines of force to generate alternating current and heat, and / or heat conduction through the resistance heating effect of the resistance wire, rapidly generating heat to heat the liquid inside the metal tube.
[0013] In a preferred embodiment, the introductory sheath includes a sheath body and a head outlet. The introductory sheath and the head outlet are provided with channels for the puncture needle and the steam tube to pass through at a certain angle. The sheath body includes an upper cavity and a lower cavity. The front end of the upper cavity is used to connect the puncture needle, and the rear end is connected to the fluid system. The lower cavity provides a working cavity for the endoscope.
[0014] In a preferred embodiment, the handle housing comprises two symmetrical / or single housings, the two housings being connected and fixed by a locking key, and the two housings or a single housing being separated from the fastener by pulling out the locking key.
[0015] In a preferred embodiment, the inlet sheath is a flexible sheath made of rigid or flexible material that can be adjusted. The wall of the inlet sheath is controlled and adjusted by one of the following methods: multiple draw wire structure, mechanical control of hinge / snake bone structure, electromagnetic, electro-induced deformation, thermal deformation unit, or multiple series / parallel air bladders / liquid bladders.
[0016] The beneficial effects of this utility model after adopting the above technical solution are:
[0017] 1. When water is converted into steam or vapor at about 100°C, a phase change occurs and absorbs heat. The resulting water vapor carries several times more energy. The water vapor is rapidly and evenly dispersed in the interstitial spaces. The condensation of the water vapor releases the stored heat energy, causing cell membrane denaturation, which leads to immediate cell death. The vascular system closes and is reabsorbed by the body's natural healing response, reducing tissue volume and opening the urethra. This relieves the obstruction in the prostate area, which leads to lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH). The minimally invasive interventional surgery under visual guidance maintains intact sexual function, and the operation time is very short, the scope of action is precise, and the tissue trauma is minimal.
[0018] 2. By using a liquid heating device, fluids can be rapidly heated in a confined space to achieve vaporization.
[0019] 3. The puncture needle can be controlled to eject and retract and lock;
[0020] 4. Rigid or flexible intubation sheaths can be applied to different human structures, such as natural cavities (urethra, trachea, digestive tract), and the diameter of the sheath can be further reduced. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the present utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a three-dimensional diagram for practical use;
[0023] Figure 2 This is a schematic diagram of the handle structure of this utility model;
[0024] Figure 3 This is a schematic diagram of the structure of the practical hydraulic system;
[0025] Figure 4 This is a schematic diagram of the control device in Embodiment 1;
[0026] Figure 5 This is a schematic diagram of the control device in Embodiment 2;
[0027] Figure 6 This is a schematic diagram of the control device in Embodiment 3;
[0028] Figure 7 This is a schematic diagram of the liquid heating device in Example 4;
[0029] Figure 8 A schematic diagram of a practical metal sheet wound with an electromagnetic coil;
[0030] Figure 9 This is a schematic diagram of the arrangement of metal tubes in Example 6;
[0031] Figure 10 This is a schematic diagram of the arrangement of metal tubes in Example 7;
[0032] Figure 11 This is a schematic diagram of the arrangement of metal tubes in Example 8;
[0033] In the diagram, 1. Handle; 11. Cable; 12. Introducing sheath; 22. Sheath body; 33. Puncture needle; 66. Head end outlet; 13. Handle housing; 55. Housing; 56. Safety switch; 57. Endoscope mounting port; 58. Fastener; 59. Locking key; 60. Tube connector; 77. Retrieval key; 88. Puncture needle release switch; 99. Flushing / treatment switch; 34. Control device; 341. First limiting hook; 342. First elastic component; 343. Stop; 344. Linkage mechanism; 345. Second limiting hook; 346. First sliding rail; 347. Torsion spring; 348. Electromagnet; 349. Magnetic rod; 2. Main unit; 3. Fluid system; 31. Injection pump fluid circuit; 32. Peristaltic pump fluid circuit; 5. Metal tube; 6. Electromagnetic coil or metal resistance wire; Detailed Implementation
[0034] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0035] Example 1: As Figures 1-4 As shown, a fluid ablation therapy device includes a handle 1, a main unit 2, and a fluid system 3. The fluid system 3 is located between the main unit 2 and the handle 1. The handle 1 and the main unit 2 are connected by a cable 11. The handle 1 includes an inlet sheath 12, in which a puncture needle 33 is retractably disposed. A control device 34 is disposed in the handle 1, which controls the puncture needle 33 to slide within the inlet sheath 12. A steam pipe is disposed within the inlet sheath 12, and a liquid heating device is disposed in the handle 1 to heat the liquid in the steam pipe.
[0036] The handle 1 also includes a handle housing 13, which has a fastener 58 for connecting the inlet sheath 12.
[0037] The control device 34 includes a linkage mechanism 344 rotatably installed inside the handle housing 13. One end of the linkage mechanism 344 is provided with a second limiting hook 345, and the other end is driven to a release puncture needle 33 switch for driving the connecting mechanism to rotate. A first limiting hook 341 is slidably installed inside the handle housing 13. A first elastic member 342 is provided between the first limiting hook 341 and the handle housing 13. The first limiting hook 341 is fixedly connected to one end of the puncture needle 33. The first limiting hook 341 cooperates with the second limiting hook 345 and will drive the first elastic member 342 to generate a rebound force. A stop block 343 for blocking the rotation of the linkage mechanism 344 is rotatably installed inside the handle housing 13. A protection switch 56 driven to the stop block 343 is rotatably installed on the handle housing 13. Operating the protection switch 56 drives the stop block 343 to rotate.
[0038] The handle housing 13 is provided with a first sliding rail 346, the release puncture needle 33 switch is slidably installed in the first sliding rail 346, the linkage mechanism 344 is provided with a second sliding rail, the end of the release puncture needle 33 near the linkage mechanism 344 is rotatably installed with a connector, the connector is slidably installed in the second sliding rail, and a second elastic component is provided between the release puncture needle 33 and the first sliding rail 346.
[0039] Specifically: the linkage mechanism 344 is an L-shaped linkage, the first elastic component 342 is a spring, and the first limiting hook 341 and the second limiting hook 345 cooperate to stretch the first elastic component 342. The second elastic component is a reset spring, one end of which is connected and fixed to the release puncture needle 33, and the other end is connected and fixed to the first sliding track 346.
[0040] In actual operation: the protective switch 56 drives the stop block 343 to rotate, which locks the linkage mechanism 344, preventing the release needle 33 switch from being pressed. When puncturing, the protective switch 56 is first operated to drive the stop block 343 to rotate, removing the limit on the linkage mechanism 344. By pressing the release needle 33 switch, the device moves along the first sliding track 346, compressing the second elastic component. The release needle 33 switch drives the connector to move inward to the second sliding valley, and drives the linkage mechanism 344 to rotate, removing the limit of the second limit hook 345 on the first limit hook 341. Under the rebound force of the first elastic component 342, the puncture needle 33 is ejected.
[0041] Example 2, based on Example 1, such as Figure 5 As shown, a torsion spring 347 is provided between the connecting mechanism and the handle housing 13. The torsion spring 347 drives the second limiting hook 345 to fix the first limiting hook 341 through the linkage mechanism 344.
[0042] Specifically: In this embodiment, the first elastic component 342 is a compression spring. The first elastic component 342 is located on the side of the first limiting hook 341 away from the puncture needle 33. The release puncture needle 33 switch is slidably mounted on the handle housing 13 through the first sliding rail 346. The end of the release puncture needle 33 switch is connected to the linkage mechanism 344.
[0043] Example 3, based on Example 1, such as Figure 6 As shown, the control device 34 includes an electromagnet 348 installed inside the handle housing 13, a magnetic rod 349 slidably installed inside the handle housing 13, a puncture needle 33 installed on the magnetic rod 349, a first elastic member 342 provided between the magnetic rod 349 and the handle housing 13, the first elastic member 342 drives the magnetic rod 349 away from the electromagnet 348, and a release switch for the puncture needle 33 is provided on the handle housing 13 for opening and closing the electromagnet 348.
[0044] Specifically: the handle housing 13 is provided with a circuit for controlling the electromagnet 348, the first elastic component 342 is a return spring, the handle housing 13 is provided with a load circuit for controlling the liquid heating device to turn on, and the magnetic rod 349 is provided with a first switch contact.
[0045] Specifically: A retraction button 77 is slidably installed on the handle housing 13. The retraction button 77 corresponds to the first limiting hook 341. When the first limiting hook 341 drives the puncture needle 33 out, the first limiting hook 341 contacts the retraction button 77. Operating the retraction button 77 drives the first limiting hook 341 to reset, which in turn drives the puncture needle 33 and the front tube to retract together, so that the second limiting hook 345 cooperates with the first limiting hook 341. At the same time, the puncture needle 33 release switch automatically pops up, waiting to be triggered for the next ejection treatment.
[0046] In actual operation: When the switch for releasing the puncture needle 33 is operated to energize the circuit of the electromagnet 348, the electromagnet 348 generates a magnetic field, which attracts the magnetic rod 349, which is integrated with the puncture needle 33, to move, thus moving the puncture needle 33. At the same time, the circuit on the right is connected, which can energize the liquid heating device on the load for heating. When the circuit of the electromagnet 348 is de-energized, the magnetic field of the electromagnet 348 disappears. 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.
[0047] Example 4, based on Example 1, Example 2, or Example 3, such as... Figure 7 and Figure 8 As shown, the liquid heating device employs at least one of the following heating methods: electromagnetic induction heating, resistance heating, radio frequency heating, and microwave heating. The liquid heating device includes a metal tube 5 installed inside the handle housing 13, a steam tube sliding inside the inlet sheath 12, the steam tube being sleeved inside the puncture needle 33 or the steam tube's air supply end being sealed and connected to the end of the puncture needle 33, the output end of the metal tube 5 being connected to the air inlet end of the steam tube, and an electromagnetic coil or metal resistance wire 6 being wound around the metal tube 5. The two ends of the electromagnetic coil or metal resistance wire 6 are connected to an external circuit, causing the surface of the metal tube 5 to cut alternating magnetic lines of force to generate an alternating current, which rapidly generates heat to heat the liquid inside the metal tube 5.
[0048] Specifically: A pipe connector 60 is provided on the handle housing 13, through which the metal pipe 5 and the liquid pipe are connected, so that the liquid enters the metal pipe 5 through the pipe connector 60. The metal pipe 5 may be tubular or sheet-like.
[0049] In actual operation: an electromagnetic coil or metal resistance wire 6 is wound around a metal tube 5. The alternating electric field generates a magnetic field, and the surface of the metal tube 5 cuts the alternating magnetic field lines to generate an alternating current (i.e., eddy current), which quickly generates heat. The fluid to be heated can flow through the metal tube 5 to achieve the heating of the liquid.
[0050] In Example 5, based on Example 4, a container is provided inside the handle housing 13. The surface seat of the electromagnetic coil or metal resistance wire 6 in Example 4 is insulated. The metal tube 5 is installed inside the container, and the resistance heating wire is installed inside the container.
[0051] Specifically: the fluid flows in from the inlet of the liquid pipe, passes through the break inlet into the container, and flows outside the metal tube 5. After contacting the surface-treated electromagnetic coil or metal wire, the fluid exchanges heat, further increasing the heat exchange efficiency and reducing the external heat generation and dissipation of the device. For the non-electromagnetically inductive metal tube 5, it is simple resistance heating; for the electromagnetically inductive metal tube 5, it is a combination of electromagnetic induction and resistance heating. The advantage of this design is that it combines the advantages of electromagnetic heating and resistance heating, resulting in high efficiency, fast heating speed, and easy temperature control, making temperature control and switching more accurate, sensitive, and stable.
[0052] Example 6, based on Example 5, such as Figure 9 As shown, the metal tubes 5 are arranged in an S-shape inside the container, and fences can be added between the metal tubes 5 to increase the stability of the installation of the metal tubes 5.
[0053] Example 7, based on Example 5, such as Figure 10 As shown, the metal tubes 5 are S-shaped and symmetrically distributed, or N-shaped, to achieve a single-layer arrangement of multiple water pipes. They are evenly distributed in a limited space within a single layer. The elongated metal tubes 5 can increase the heat exchange area and change the direction of the internal fluid, making the flow mixing more uniform. At the same time, since the winding directions on adjacent metal tubes 5 are opposite, the magnetic fields of adjacent metal tubes 5 are canceled in the external magnetic field, reducing the interference of the alternating magnetic field on external circuits and other electronic equipment in the operating room.
[0054] Example 8, based on Example 5, such as Figure 11 As shown, the metal tube 5 is arranged in multiple layers inside the container, and is not limited to arrangements such as vortex tubes, mosquito coil tubes, spiral tubes, multi-layer heat exchangers, finned heat exchangers, etc.
[0055] Example 9, based on any one of Examples 1-8, such as Figures 1-3 As shown, the host 2 includes a power supply, a circuit board, connecting lines, and a pump system. The power supply and circuit board are located inside the housing 55, the pump system is located on the top or side of the host 2 chassis, and the connecting circuit is connected to the cable 11.
[0056] The fluid system 3 includes an infusion pump fluid circuit 31 and a peristaltic pump fluid circuit 32. The function of the infusion pump fluid circuit 31 is to pump therapeutic fluids (such as hot steam, medicinal solutions, alcohol, acids, etc.) into the lesion site inside the body through pump control. The infusion pump fluid circuit 31 includes a syringe, a transmission device, and syringe tubing. The infusion pump pushes the fluid into the handle 1 to generate steam. The peristaltic pump fluid circuit 32 includes a peristaltic pump and peristaltic pump tubing. It can inject coolant / cleaning fluid into the handle 1 and perfuse it into the area around the lesion for protection and cleaning, and also serves to clean the endoscope lens. The peristaltic pump tubing can be a parallel dual-channel system with inflow and outflow, and the outflow channel can be used to drain the fluid. The syringe tubing and the peristaltic pump tubing can be independent of each other.
[0057] Example 10, based on Example 9, such as Figures 1-3 As shown, the introductory sheath 12 includes a sheath body 22 and a head outlet 66. The introductory sheath 12 and the head outlet 66 are provided with channels for the puncture needle 33 and the steam tube to pass through at a certain angle, 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 fluid system 3. The lower cavity tube provides a working cavity for the endoscope.
[0058] The endoscope channel in the insertion sheath 12 serves to provide an intraoperative field of vision. The insertion sheath 12 enters the urethra, and the puncture needle 33 enters the target tissue (such as the prostate) to form a steam channel, injecting steam into the target tissue. The insertion sheath 12 can be rigid or flexible. When the insertion sheath 12 is flexible, a flexible end is provided at the end of the insertion sheath 12 away from the handle 1, and an opening is provided at the flexible end through which the puncture needle 33 exits. The internal channel of the flexible insertion sheath 12 can be passed through the working channel of the endoscope by the flexible endoscope and the flexible puncture needle 33 or the insertion sheath 12. The flexible insertion sheath 12 can also be passed through the working channel of the flexible endoscope.
[0059] The puncture needle 33 is carefully designed according to different human body structures and steam distribution requirements to ensure: 1. minimal trauma, 2. closed steam channel, 3. precise steam release location, 4. uniform steam convection and diffusion, and 5. safe retrieval. The puncture needle 33 is made of polymer material or metal, with a length of 0-30mm. Preferably, polymer material avoids bending and needle breakage, with a length of 5-20mm.
[0060] Guided by a visual device (such as an endoscope or ultrasound), the introductory sheath 12 enters the body's natural cavities. The puncture needle 33 and the steam tube connected to its rear end exit through the introductory sheath 12 and the head outlet 66. The sequence is that the puncture needle 33 first exits and enters the target human tissue, and the steam tube follows the track established by the puncture needle 33 into the target human tissue. The steam tube can be withdrawn a certain distance to release steam, or the steam tube can release steam after the puncture needle 33 is withdrawn.
[0061] The handle housing 13 includes two symmetrical housings 55, which are connected and fixed by a locking key 59. The two housings 55 are separated by pulling out the locking key 59. The two symmetrical housings 55 are connected by a boltless fastener 58, and the housings 55 are provided with locking key 59 grooves. The locking key 59 is inserted into the locking key 59 groove to connect and fix the two housings 55.
[0062] The inlet sheath 12 is made of rigid or flexible material and is adjustable. The wall of the inlet sheath 12 is controlled by one of the following methods: multiple wire structure, mechanical control of hinge / snake bone structure, electromagnetic, electro-induced deformation, thermal deformation unit, or multiple series / parallel air bladders / liquid bladders.
[0063] In Example 11, based on Example 10, an endoscope mounting port 57 and a flushing / treatment switch 99 are installed on the phone casing 55. 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 control the flushing / cooling and treatment functions respectively. The treatment function can only be triggered after the flushing button is pressed. This ensures that flushing / cooling is always turned on during treatment, otherwise there is a risk of treatment. The logical combination button can effectively avoid misoperation that does not conform to the surgical operation procedure.
[0064] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A fluid ablation therapy device, comprising a handle (1), a main unit (2), and a fluid system (3), wherein the fluid system (3) is located between the main unit (2) and the handle (1), the handle (1) and the main unit (2) are connected by a cable (11), the handle (1) includes an inlet sheath (12), and a puncture needle (33) is retractably disposed within the inlet sheath (12), characterized in that, The handle (1) is provided with a control device (34), which controls the puncture needle (33) to slide in the inlet sheath (12). The inlet sheath (12) is provided with a steam pipe, and the handle (1) is provided with a liquid heating device, which heats the liquid in the steam pipe.
2. A fluid ablation treatment device according to claim 1, wherein, The handle (1) also includes a handle housing (13), and the handle housing (13) is provided with fasteners (58) for connecting the inlet sheath (12).
3. A fluid ablation treatment device according to claim 2, wherein, The control device (34) includes a linkage mechanism (344) rotatably mounted in the handle housing (13). One end of the linkage mechanism (344) is provided with a second limiting hook (345), and the other end is tractively connected to a release puncture needle (33) switch for driving the connecting mechanism to rotate. A first limiting hook (341) is slidably mounted in the handle housing (13). A first elastic member (342) is provided between the first limiting hook (341) and the handle housing (13). The hook body (341) is fixedly connected to one end of the puncture needle (33). The first limiting hook body (341) and the second limiting hook body (345) cooperate and drive the first elastic component (342) to generate a rebound force. A stop block (343) for blocking the rotation of the linkage mechanism (344) is rotatably installed inside the handle housing (13). A protection switch (56) that is rotatably connected to the stop block (343) is rotatably installed on the handle housing (13). Operating the protection switch (56) drives the stop block (343) to rotate.
4. A fluid ablation treatment device according to claim 3, wherein, The handle housing (13) is provided with a first sliding rail (346), the release puncture needle (33) switch is slidably installed in the first sliding rail (346), the linkage mechanism (344) is provided with a second sliding rail, the end of the release puncture needle (33) near the linkage mechanism (344) is rotatably installed with a connector, the connector is slidably installed in the second sliding rail, and a second elastic component is provided between the release puncture needle (33) and the first sliding rail (346).
5. The fluid ablation treatment device of claim 3, wherein, A torsion spring (347) is provided between the connecting mechanism and the handle housing (13). The torsion spring (347) drives the second limiting hook (345) to fix the first limiting hook (341) through the linkage mechanism (344).
6. The fluid ablation treatment device of claim 2, wherein, The control device (34) includes an electromagnet (348) installed in the handle housing (13), a magnetic rod (349) slidably installed in the handle housing (13), a puncture needle (33) installed on the magnetic rod (349), a first elastic member (342) is provided between the magnetic rod (349) and the handle housing (13), the first elastic member (342) drives the magnetic rod (349) away from the electromagnet (348), and a release puncture needle (33) switch for opening and closing the electromagnet (348) is provided on the handle housing (13).
7. A fluid ablation treatment device according to any one of claims 1-6, wherein, The liquid heating device includes a metal tube (5) installed in the handle housing (13), a steam tube sliding inside the inlet sheath (12), the steam tube being sleeved inside the puncture needle (33) or the gas supply end of the steam tube being sealed and connected to the end of the puncture needle (33), the output end of the metal tube (5) being connected to the gas inlet end of the steam tube, an electromagnetic coil or a metal resistance wire (6) being wound on the metal tube (5), the two ends of the electromagnetic coil or the metal resistance wire (6) being connected to an external circuit, and causing the surface of the metal tube (5) to cut alternating magnetic lines of force to generate alternating current and generate heat, and / or the heat generated by the resistance heating effect of the resistance wire to rapidly generate heat to heat the liquid inside the metal tube (5).
8. A fluid ablation treatment device according to claim 7, wherein, The inlet sheath (12) includes a sheath body (22) and a head outlet (66). The inlet sheath (12) and the head outlet (66) are provided with channels for the puncture needle (33) and the steam tube to pass through at a certain angle. 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 fluid system (3). The lower cavity tube provides a working cavity for the endoscope.
9. The fluid ablation treatment device of claim 2, wherein, The handle housing (13) includes two symmetrical / or single housings (55), which are connected and fixed by a locking key (59). The two housings (55) or a single housing is separated from the fastener (58) by pulling out the locking key (59).
10. The fluid ablation treatment device of claim 1, wherein, The inlet sheath (12) is a flexible sheath made of rigid or flexible material that can be adjusted. The wall of the inlet sheath (12) is controlled and adjusted by one of the following methods: multiple wire structure control, hinge / snake bone structure mechanical control, electromagnetic, electro-induced deformation, thermal deformation unit, or multiple series / parallel air bladders / liquid bladders.