CN220632199U

CN220632199U - Ablation device and ablation system

Info

Publication number: CN220632199U
Application number: CN202321759977.2U
Authority: CN
Inventors: 李孝锋; 王光明; 杨波; 陈�峰; 陈春来; 杨旻; 赵朔
Original assignee: Haixun Medical Technology Suzhou Co ltd
Current assignee: Haixun Medical Technology Suzhou Co ltd
Priority date: 2023-07-06
Filing date: 2023-07-06
Publication date: 2024-03-22
Anticipated expiration: 2033-07-06

Abstract

The utility model discloses an ablation device and an ablation system, wherein the ablation device comprises a machine body, a catheter, a puncture assembly and an adjusting assembly, and the machine body forms an installation cavity; the conduit is communicated with the mounting cavity; the puncture assembly comprises a puncture part and an ejection driving part, the puncture part comprises a puncture section, the puncture part penetrates through the mounting cavity and the guide pipe, the ejection driving part drives the puncture part to move forward in an ejection mode so as to drive the puncture section to extend out of the guide pipe in an outward moving mode, and the puncture assembly is provided with a matching surface which is fixed relative to the puncture part and is arranged forward; the adjusting component comprises a stop piece, and the stop piece can move to be positioned on the ejection track of the puncture piece so as to limit the continuous extension of the puncture section; the stop piece is movably arranged in a front-back direction in an adjustable manner. According to the utility model, the stop piece can be movably adjusted along the front and back directions, and the matching surface can be abutted against the stop piece at different positions on the ejection track of the puncture piece, so that the puncture depth of the puncture section can be movably adjusted, and the puncture device is suitable for different puncture requirements and has more practicability.

Description

Ablation device and ablation system

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an ablation device and an ablation system.

Background

The prostate gland structure can be divided into three regions: a peripheral zone, a transition zone, and a central zone. Peripheral zone PZ includes about 70% of the volume of the prostate gland in young men, and 70-80% of cancers originate in peripheral zone tissue; the central zone CZ, which generally is the site of the inflammatory process, surrounds the ejaculatory duct and comprises about 20-25% of the prostate volume; the transition zone TZ is the site in which benign prostatic hyperplasia develops and includes about 5-10% by volume of glandular elements in normal prostate, but may constitute up to 80% of this volume in the case of BPH. The transition zone includes two lateral prostatic lobes and periurethral gland regions. Around the transition zone there is a natural barrier, namely the prostatic urethra, the anterior fibromuscular stroma and the fiber plane between the transition zone and the peripheral zone. The pre-fibromuscular stroma or fibromuscular region is predominantly fibromuscular tissue.

BPH is generally diagnosed when patients complain of troublesome urination difficulties seeking medical treatment. The main symptoms of BPH are urinary frequency and urgency, and a significant drop in flow rate during urination. BPH may also cause urine to reside in the bladder, which in turn may lead to lower urinary tract infections. Thus, BPH may significantly alter quality of life as the male population ages. BPH is the result of an imbalance between continuous production of glandular cells and natural death of the prostate gland. Overproduction of these cells results in an increase in the size of the prostate, most notably in the transition zone across the prostatic urethra.

In the early stage of BPH, the drug treatment can relieve some symptoms, and at present, drugs such as hormone or anti-hormone drugs, alpha adrenergic receptor blockers, 5 alpha receptor reductase inhibitors, cholesterol inhibitors and the like are widely applied. For example, alpha-blockers treat BPH by relaxing smooth muscle tissue found in the prostate and bladder necks, and such agents can prove effective before the glandular element causes extreme cell growth in the prostate. Disadvantages: has great side effect, is easy to produce dependence and has great harm to the cardiovascular and cerebrovascular systems and the immune system after long-term administration. And because the root cause and pathogenesis of the prostatic hyperplasia are not completely clear in western medicine, western medicine is mainly used for improving and relieving symptoms in treatment, but not radically treating the prostatic hyperplasia.

The more advanced stages of BPH can only be treated by surgical or minimally invasive ablation device interventions. Various methods have been developed that utilize electrosurgical or mechanical tissue aspiration and cryoablation of intracapsular prostate tissue. In many cases, such interventions provide only temporary relief, and these treatments often result in significant preoperative and post-operative discomfort and recurrence rates due to, for example, greater trauma.

In addition, the single-use prostate thermal steam therapeutic apparatus for treating BPH is used clinically at present, and 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 contact pin joint for water delivery. The steam thermal ablation gun consists of a handle (comprising a steam generating device), a sheath tube (comprising a steam transmission conduit), a sterile water pipe, a flushing pipe, a water drain pipe and the like. The rapid heating radio frequency coil is adopted, the external water is heated into steam by using radio frequency energy, and the steam is injected into the tissue through the opening of the puncture needle and rapidly diffuses through gaps among tissue cells. Immediately after the vapor comes into contact with the tissue, cooling condensation begins. The stored thermal energy is released, slightly denaturing the cell membrane, resulting in instantaneous cell death. Over time, denatured tissue may be absorbed by the body. The steam coagulation process can also cause rapid collapse of the blood vessel in the ablation treatment area, thus realizing the bloodless operation. Is suitable for patients with benign prostatic hyperplasia with prostatic volume (with or without prostatic hyperplasia in central region and/or middle lobe) of 30-80cm3 in men over 50 years old. The puncture depth is about 10mm when the device is used with a bladder endoscope of 4mm/30 degrees/30 cm.

In the prior art, as the puncture needle depth is not adjustable, a doctor cannot select proper puncture depth according to the disease degree of a patient and the size of the benign prostatic hyperplasia tissue, and the doctor is mostly used for puncturing tissues at two sides and cannot puncture a thinner part of the benign prostatic tissue, the puncture depth is too deep, and the postoperative complications and various postoperative side effects are aggravated to increase the time for recovering the health of the patient.

Disclosure of Invention

The utility model mainly aims to provide an ablation device and an ablation system, and aims to solve the problem that the penetration depth of a puncture needle in a traditional ablation device is not adjustable.

To achieve the above object, the present utility model provides an ablation device comprising:

a body having an installation cavity formed therein;

the guide pipe extends and is arranged along the front-back direction, the rear end of the guide pipe is connected with the machine body, and the guide pipe is communicated with the mounting cavity;

the puncture assembly comprises a puncture part and an ejection driving part, the puncture part comprises a puncture section arranged in front, the puncture part sequentially penetrates through the mounting cavity and the catheter from back to front, the ejection driving part is used for driving the puncture part to move forward in an ejection mode so as to drive the puncture section to extend out of a front end pipe orifice of the catheter in an outward moving mode, and the puncture assembly is provided with a matching surface which is fixed relative to the puncture part and is arranged forward; the method comprises the steps of,

the adjusting assembly comprises a stop piece at least partially accommodated in the mounting cavity, the stop piece can move to be positioned on an ejection track of the puncture piece, and when the puncture piece moves forwards to approach, the stop piece abuts against the matching surface to stop the continuous extension of the puncture section;

under the drive of external force, the stop piece is movably arranged along the front and back directions in an adjustable mode, so that the matching surface can be abutted against the stop piece at different positions on the ejection track of the puncture piece, and the extension length of the puncture section can be movably adjusted.

Optionally, the ejection driving part includes:

an electromagnet through which a slide hole is formed along the front-back direction; the method comprises the steps of,

and the sliding block is provided with a clamping hole in a penetrating way along the front and back directions, the clamping hole clamps and fixes the puncture member, the sliding block is in sliding connection and matching with the sliding hole, and when the electromagnet is electrified, the sliding block is driven by magnetic force to drive the puncture member to slide back and forth.

Optionally, the puncture member is provided with a flow passage along the front-back direction;

the ablation device further comprises a steam generation device, wherein the output end of the steam generation device is communicated with the flow channel so that steam can be discharged outwards from the puncture section after flowing through the flow channel.

Optionally, at least one of the abutment mating surfaces of the stopper and the spike assembly is provided with a buffer structure.

Optionally, the stopper includes an operating section protruding outside the mounting cavity;

the machine body is provided with a visual identification structure on the outer wall of the machine body, and the identification structure is arranged adjacent to the operation section so as to quantitatively identify the front-back movement adjustment of the stop piece.

Optionally, a first mounting hole is penetrated in the front end of the machine body along the front-back direction, the first mounting hole is communicated with the mounting cavity, and the forward projection of the first mounting hole, which is backwards, falls on the matching surface;

the stop piece is movably and adjustably mounted in the first mounting hole along the front-back direction.

Optionally, the first mounting hole is provided with an internal thread, the stop piece is provided with an external thread, and the stop piece is in threaded fit with the first mounting hole.

Optionally, the ablation device further includes a post protruding forward from the front end of the body and a rib protruding laterally from the post, the post and the stop member are arranged side by side, one side of the post facing the stop member is provided with a marking structure, and the rib is located on the front side of the stop member so as to limit the stop member from falling out of the mounting hole.

Optionally, the body is provided with a second mounting hole communicated to the mounting cavity at one radial side of the guide pipe;

the stop piece is movably mounted in the second mounting hole.

In addition, to achieve the above object, the present utility model also provides an ablation system including an ablation device including:

a body having an installation cavity formed therein;

According to the technical scheme provided by the utility model, the ejection driving part can eject the puncture part forwards according to the set maximum stroke amount, so that the puncture section can be penetrated into a diseased part of a human body; the stop piece is arranged on the ejection track of the puncture piece, so that when the puncture piece is ejected forwards to be close to the stop piece, the puncture piece cannot be ejected forwards continuously due to the abutting stop effect between the matching surface and the stop piece, and the ejection distance of the puncture piece is shortened, namely the puncture depth of the puncture section is shortened; because the backstop piece can be along the fore-and-aft direction regulation that moves about, can carry out the butt backstop to the mating surface in the different positions department of the ejection orbit of puncture piece for puncture section puncture degree of depth can be according to actual need and move about the regulation, and the adaptation is in different puncture demands, makes the whole practicality that has of ablation device.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an embodiment of an ablation system provided by the present utility model;

FIG. 2 is a schematic perspective view of the ablation device of FIG. 1;

FIG. 3 is an enlarged schematic view of FIG. 2A;

FIG. 4 is an enlarged schematic view of the structure shown at B in FIG. 2;

FIG. 5 is a schematic longitudinal cross-sectional view of the ablation device of FIG. 2;

FIG. 6 is an enlarged schematic view of FIG. 5C;

fig. 7 is an exploded view of the spike assembly of fig. 2.

Reference numerals illustrate:

a 100 machine body; 110 mounting cavities; 120 a first mounting hole; 200 catheters; 210 mounting channels; 300 punctures; 310 a piercing section; 320 flow channels; 400 ejector drive members; 410 an electromagnet; 411 slide holes; 420 sliding blocks; 421 grip holes; 422 mating surfaces; 500 an adjustment assembly; 510 a stop; 511 operations section; 600 steam generating devices; 700 buffer structure; 810 benchmarks; 820 ribs; 830 identifies the structure; 910 displaying and controlling a terminal; 920 water supply means.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

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

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1 to 7, an ablation device according to the present utility model includes a body 100, a catheter 200, a puncture assembly and an adjustment assembly 500. A mounting cavity 110 is formed in the interior of the body 100; the guide pipe 200 is arranged along the extending direction of the front and the back, the rear end of the guide pipe 200 is connected with the machine body 100, and the guide pipe 200 is communicated with the mounting cavity 110; the puncture assembly comprises a puncture member 300 and an ejection driving component 400, the puncture member 300 comprises a puncture section 310 arranged in front, the puncture member 300 sequentially penetrates through the mounting cavity 110 and the catheter 200 from back to front, the ejection driving component 400 is used for driving the puncture member 300 to move forward in an ejection manner so as to drive the puncture section 310 to extend outwards from a front end pipe orifice of the catheter 200 in a movable manner, and the puncture assembly is provided with a matching surface 422 which is fixed relative to the puncture member 300 and is arranged forward; the adjusting assembly 500 includes a stopper 510 at least partially accommodated in the mounting cavity 110, the stopper 510 being movable to be located on an ejection track of the piercing member 300, and when the piercing member 300 moves forward and approaches, the stopper 510 abuts against the mating surface 422 to limit the continued extension of the piercing section 310; the stop member 510 is movably disposed along the front-back direction under the driving of an external force, so as to be capable of abutting against the matching surface 422 at different positions on the ejection track of the piercing member 300, so that the extension length of the piercing section 310 can be movably adjusted.

In the technical scheme provided by the utility model, the ejection driving component 400 can eject the puncture member 300 forward according to the set maximum stroke amount, so that the puncture section 310 can be penetrated into the diseased part of the human body; the stop piece 510 is arranged on the ejection track of the puncture piece 300, so that when the puncture piece 300 is ejected forwards to be close to the stop piece 510, the puncture piece 300 cannot be ejected forwards due to the abutting stop action between the matching surface 422 and the stop piece 510, and the ejection distance of the puncture piece 300 is shortened, namely the puncture depth of the puncture section 310 is shortened; because the stopper 510 can be movably adjusted along the front-back direction, the matching surface 422 can be abutted against the stopper at different positions of the ejection track of the puncture member 300, so that the puncture depth of the puncture section 310 can be movably adjusted according to actual needs, and the puncture device is suitable for different puncture requirements, so that the whole ablation device has more practicability.

In practical applications, the body 100 may include a housing, and the housing may be configured in a handle shape, for example, to facilitate the user's hand holding, or in a pistol shape, as desired. The casing may specifically include at least two shell structures, where each shell structure may be sequentially disposed along any dimension direction of the casing and detachably connected, and when the shell structures are connected, the shell structures collectively enclose and define the installation cavity 110.

The guide tube 200 is hollow to form a mounting channel 210 extending in the front-rear direction. The mounting channel 210 may be provided in one or more according to actual needs. Specifically, for example, when the body 100 further includes a head end structure. Wherein the headend structure includes an imaging device capable of capturing an image of an environment toward which the leading end of the catheter 200 is directed, and an illumination device capable of providing sufficient light source illumination to the imaging device. Based on this, two mounting channels 210 may be provided, where the two mounting channels 210 are arranged side by side along the radial direction of the catheter 200, and a front tube section of one of the two mounting channels 210 may be provided for the head end structure to mount, and may circulate physiological saline according to actual needs, so that the imaging surface of the imaging device may be flushed with the physiological saline, so that the imaging surface is cleaner and has no interference; the other of the two mounting channels 210 is configured to allow the piercing member 300 to be movably threaded in a front-to-rear direction. The front end ports of the two mounting channels 210 are in communication with each other such that the extended portion of the piercing section 310 is located within the imaging region of the imaging device to facilitate the surgical procedure.

Referring to fig. 1 to 3, it will be appreciated that the penetrating member 300 is driven by the ejector driving member 400 to movably extend from the front end of the catheter 200, so as to penetrate into a patient's body. The design does not limit the surgical treatment process after the puncture member 300 punctures the patient part, that is, the puncture member 300 can perform the surgical operation on the patient part in any suitable manner according to actual needs, for example, in an embodiment, the puncture member 300 is provided with a flow channel 320 along the front-back direction; the ablation device further comprises a steam generating means 600, wherein the output end of the steam generating means 600 is communicated with the flow channel 320 for the steam to flow through the flow channel 320 and then be discharged from the puncture section 310. The external water source is communicated with the flow passage 320 of the piercing member 300 through, for example, a water inlet pipe, and the steam generating device 600 is, for example, a heater acting on the water inlet pipe, the flow passage 320, or directly acting on the water source flowing in the water inlet pipe/flow passage 320, and can heat the water source flowing therethrough at a high temperature so that the liquid water is converted into high temperature steam. The high-temperature steam can release heat energy to the affected part punctured by the puncturing section 310, so that cells at the affected part are deformed, and the treatment purpose is achieved.

Further, in view of the above, the ablation device may further include a water supply device 920, and the water supply device 920 may communicate with the flow channel 320 and/or with the mounting channel 210 mounted with the head structure to access external, e.g., physiological saline.

Because the mounting channel 210 of the catheter 200 communicates with the mounting cavity 110, the rear section of the piercing element 300 is received in the mounting cavity 110 and is connectable to the ejection driving member 400 disposed in the mounting cavity 110; the middle section of the puncture element 300 is penetrated in the installation channel 210; the forward section of piercing element 300, i.e., piercing section 310, is positioned at the forward end port of mounting channel 210 or extends partially out of the forward end port of mounting channel 210.

Without limitation, referring to fig. 7, in one embodiment, the ejection driving member 400 includes an electromagnet 410 and a slider 420. Wherein, the electromagnet 410 is provided with a sliding hole 411 along the front-back direction; the sliding block 420 is provided with a clamping hole 421 in a penetrating manner along the front-back direction, the clamping hole 421 clamps and fixes the puncture member 300, the sliding block 420 is in sliding connection with the sliding hole 411, and when the electromagnet 410 is powered on, the sliding block 420 is driven by magnetic force to drive the puncture member 300 to slide back and forth. The energization of the electromagnet 410 may be provided by a power module disposed within the mounting cavity 110 or external to the ablation device. The power supply module can be a cable directly connected with the mains supply, or various storage batteries capable of storing power supply, and the like. The electromagnet 410 is typically composed of an energized coil and a core, and the slider 420 is typically provided in a ferrous block configuration. When the electromagnet 410 is powered on, the iron core is magnetized to form a magnetic field, the magnetic field acts on the slider 420, and a forward magnetic attraction force can be formed on the slider 420, and due to the fixed structure of the electromagnet 410 and the slider 420, the forward stroke amount of the slider 420 is fixed, that is, the forward stroke amount of the piercing member 300 is fixed, so that the piercing depth of the piercing section 310 is fixed.

In the above description, the electromagnet 410 is fixed relative to the body 100, and the slider 420 is movable at least forward relative to the body 100; of course, in other embodiments, the slider 420 may be fixed relative to the machine body 100, and the electromagnet 410 may be at least movable forward relative to the machine body 100, where the electromagnet 410 is fixedly connected to the piercing member 300.

In addition, the ejection driving member 400 may be other solutions, for example, a combination of a driving motor and a screw nut, a combination of a driving motor and a rack and pinion, etc., and may generate a driving force for driving the piercing element 300 to eject forward instantaneously.

In view of the above, referring to fig. 4-7, the ejector drive member 400 is capable of driving the lancet 300 forward to a fixed amount of travel. In the process that the puncturing element 300 is driven by the ejection driving component 400, the stop element 510 is arranged on the ejection track of the puncturing element 300, and can stop the matching surface 422 in the ejection process of the puncturing element 300, so that the fixed stroke amount of the puncturing element 300 is cut off, and the ejection distance of the puncturing element 300 is shortened to a certain extent as required. Before the piercing member 300 is driven by the ejection driving member 400, the stopper 510 may be driven by an external force to perform forward and backward movement adjustment along the ejection track of the piercing member 300, so that the stopper 510 may stop the mating surface 422 at a desired position on the ejection track of the piercing member 300, thereby implementing movement adjustment of the ejection distance of the piercing section 310, and enabling the piercing depth of the piercing section 310 to be flexibly adapted to various surgical requirements.

It should be noted that, in an embodiment, the process of adjusting the forward and backward movement of the stopper 510 along the ejection track of the piercing member 300 may be a step adjustment, that is, a plurality of stopper positions are preset on the ejection track of the piercing member 300, and the stopper 510 may be selectively fixed at any stopper position under the driving of an external force; of course, the forward and backward movement adjustment of the stopper 510 along the ejection track of the piercing member 300 may be stepless, that is, the stopper 510 may be fixed at any position on the ejection track of the piercing member 300 under the driving of an external force.

Further, the initial position of the stopper 510 may be directly on the ejection track of the lancet 300. Or in an embodiment, the initial position of the stop member 510 is set at one side of the ejection track of the piercing member 300, and the stop member 510 can be driven by an external force to move towards the direction close to the ejection track of the piercing member 300, so that when the stop member 510 is maintained at the initial position, no stop exists at any position on the ejection track of the piercing member 300, and the piercing member 300 can perform the ejection movement by a preset and fixed stroke amount driven by the ejection driving member 400.

In the above description, the engaging surface 422 is fixed relative to the piercing member 300 and disposed forward. The mating surface 422 may be formed on the piercing member 300, specifically, for example, a step is formed by protruding a part of the piercing member 300 laterally, and a step surface is formed forward, and the step surface constitutes the mating surface 422. Of course, as shown in fig. 6 to 7, the mating surface 422 may also be formed on the slider 420, where the slider 420 is fixedly connected to the piercing member 300, that is, moves synchronously with the piercing member 300, and the radial dimension of the slider 420 is generally set to be larger than that of the piercing member 300, and the front end surface of the slider 420 forms the mating surface 422.

In one embodiment, at least one of the abutment mating surfaces 422 of the stop 510 and the spike assembly is provided with a buffer structure 700. The cushioning structure 700 is, for example, a cushioning layer, a cushioning sleeve, or the like made of an elastic material. Referring to fig. 6 to 7, the buffer structure 700 is configured as an elastic sleeve sleeved at one end of the stopper 510 near the mating surface 422, and the sleeve wraps the end wall and the side wall of the stopper 510, so that when the stopper 510 abuts against the mating surface 422, the abutment between the stopper 510 and the mating surface 422 is converted from rigid abutment into elastic abutment, which is helpful for reducing impact damage to the stopper 510 and the puncture 300 or the slider 420 forming the mating surface 422, and reducing collision noise.

In practical application, the external force driving of the stopper 510 may be provided by a power member provided outside the body 100, or directly by manual operation of an operator. Based on this, in an embodiment, the stopper 510 includes an operating section 511 that protrudes outside the mounting cavity 110. The operating section 511 may be configured to be shaped, sized, and configured to facilitate connection of external power components, or to facilitate hand-held attachment by an operator, such as an ergonomic handle structure, hand wheel structure, or twist grip structure. Further, the body 100 is provided with a visual marking structure 830 on an outer wall thereof, and the marking structure 830 is disposed adjacent to the operation section 511 to quantitatively mark the adjustment of the front-rear movement of the stopper 510. In this way, the identification structure 830 can visually identify the activity operation of the operation section 511, so that the activity of the operation section 511 is quantitatively presented, that is, the overall front-back activity of the stopper 510 is quantitatively presented, which is more helpful for the accurate adjustment of the stopper 510 by the operator.

The specific scheme of the marking structure 830 is not limited, and may be set to, for example, a structure marked by a character, letter, number, color block, pattern, etc., a pointer, a digital display screen, a voice broadcast device, etc., according to actual needs.

Based on any of the above embodiments, the specific scheme of the stopper 510 is not limited;

referring to fig. 4 to 7, in an embodiment, a front end of the machine body 100 is provided with a first mounting hole 120 extending in a front-rear direction, the first mounting hole 120 is communicated with the mounting cavity 110, and a rear orthographic projection of the first mounting hole 120 falls on the mating surface 422; the stopper 510 is movably and adjustably mounted to the first mounting hole 120 in the front-rear direction. In this way, the extending direction of the stopper 510 is substantially the same as the extending direction of the catheter 200, the stopper 510 can be disposed by fully utilizing the space located on the circumference side of the catheter 200 in the mounting chamber 110, and the moving direction of the stopper 510 and the moving direction of the puncture member 300 are parallel and do not interfere with each other. By adjusting the stop 510 to extend from the first mounting hole 120 into the mounting cavity 110, the free end of the stop 510 can be brought closer to the mating surface 422, thereby adjusting the penetration depth of the penetration 300 to be reduced; conversely, by adjusting the extension of the stopper 510 from the first mounting hole 120 to the outside of the mounting cavity 110, the free end of the stopper 510 can be made to be farther away from the mating surface 422, thereby adjusting the penetration depth of the penetration member 300 to be increased.

In practice, the movable adjustment of the stopper 510 along the first mounting hole 120 may be a linear telescopic adjustment. At this time, the stopper 510 is provided as a telescopic rod that is telescopically provided in the front-rear direction, for example. Alternatively, in an embodiment, the first mounting hole 120 is provided with an internal thread, the stopper 510 is provided with an external thread, and the stopper 510 is in threaded engagement with the first mounting hole 120. In this way, the stable installation of the stop member 510 in the first mounting hole 120 is facilitated, and the stop member 510 can be more accurately adjusted to be close to the matching surface 422 or be far away from the matching surface 422 in the process of screwing in and screwing out the stop member 510 relative to the first mounting hole 120, so that the structure is simple, and the operation is simple.

Specifically, in one embodiment, the ablation device further includes a post 810 protruding forward from the front end of the body 100 and a rib 820 protruding laterally from the post 810, where the post 810 is disposed side by side with the stopper 510, and a marking structure 830 is disposed on a side of the post 810 facing the stopper 510, and the rib 820 is disposed on a front side of the stopper 510 to limit the stopper 510 from being removed from the mounting hole. The setting of stake 810 can carry out the side direction spacing to stopper 510, and sets up the sign structure 830 on the stake 810 and can quantify the precession of stopper 510, and the setting of protruding muscle 820 can carry out spacingly to the forward of stopper 510 for stopper 510 is steadily installed in first mounting hole 120, and can accurate the puncture degree of depth of adjusting puncture section 310.

Of course, in an embodiment, the body 100 is provided with a second mounting hole communicating to the mounting cavity 110 at one side of the guide tube 200 in the radial direction; the stopper 510 is movably mounted in the second mounting hole. As such, the stopper 510 may be disposed apart from the catheter 200, the disposition of the stopper 510 interfering with the insertion process of the catheter 200, and the disposition of the catheter 200 interfering with the activity adjustment process of the stopper 510 is avoided. The stopper 510 is disposed at one radial side of the catheter 200, and a portion of the stopper 510 extending into the mounting cavity 110 may be provided with a relief via hole corresponding to the puncture 300.

Further, the second mounting hole may be elongated in the front-rear direction, so as to reserve enough space for the stopper 510 to perform the front-rear movement adjustment. Or a plurality of second mounting holes may be provided at intervals in the front-rear direction, and the stopper 510 may be selectively inserted into the mounting cavity 110 from any one of the second mounting holes.

Based on any of the above embodiments, the present utility model also provides an ablation system comprising an ablation device as described above. It should be noted that, the detailed structure of the ablation device in the ablation system may refer to the embodiment of the ablation device described above, and will not be described herein again; because the ablation device is used in the ablation system of the present application, the embodiments of the ablation system of the present application include all the technical solutions of all the embodiments of the ablation device, and the achieved technical effects are also identical, and are not described in detail herein.

It will be appreciated that referring to fig. 1, the ablation system may be configured to include, for example, a display control terminal 910 or a water supply 920, as desired. The display control terminal 910 is, for example, a computer, and has functions of data processing, data and image display. The water supply device 920 is, for example, a fluid bag connected via a fluid line to, for example, a flow channel 320 or a mounting channel 210 with a head end structure mounted therein, within the ablation device.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. An ablation device, comprising:

a body having an installation cavity formed therein;

2. The ablation device of claim 1, wherein the ejection drive member comprises:

3. The ablation device of claim 1, wherein the penetrating member is provided with a flow passage extending longitudinally therethrough;

4. The ablation device of claim 1, wherein at least one of the abutment mating surfaces of the stop and the puncture assembly is provided with a buffer structure.

5. The ablation device of claim 1, wherein the stop includes an operative section extending out of the mounting cavity;

6. The ablation device of any of claims 1-5, wherein a front end of the body is perforated with a first mounting hole in a front-to-back direction, the first mounting hole being in communication with the mounting cavity, a rear-facing orthographic projection of the first mounting hole falling on the mating surface;

7. The ablation device of claim 6, wherein the first mounting hole is internally threaded and the stop is externally threaded, the stop being threadably engaged with the first mounting hole.

8. The ablation device of claim 7, further comprising a post projecting forward from a front end of the body and a rib projecting laterally from the post, the post being disposed side-by-side with the stop, and a side of the post facing the stop being provided with a marking structure, the rib being positioned on a front side of the stop to limit removal of the stop from the mounting hole.

9. The ablation device of any one of claims 1 to 5, wherein the body is provided with a second mounting hole on a radial side of the catheter that communicates to the mounting lumen;

the stop piece is movably mounted in the second mounting hole.

10. An ablation system comprising an ablation device as claimed in any one of claims 1 to 9.