CN117958958A - Hemorrhoid ablation electrode assembly, hemorrhoid ablation system and tissue ablation system for narrow space - Google Patents
Hemorrhoid ablation electrode assembly, hemorrhoid ablation system and tissue ablation system for narrow space Download PDFInfo
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- CN117958958A CN117958958A CN202410362728.2A CN202410362728A CN117958958A CN 117958958 A CN117958958 A CN 117958958A CN 202410362728 A CN202410362728 A CN 202410362728A CN 117958958 A CN117958958 A CN 117958958A
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- 238000002679 ablation Methods 0.000 title claims abstract description 181
- 208000014617 hemorrhoid Diseases 0.000 title claims abstract description 69
- 238000001179 sorption measurement Methods 0.000 claims abstract description 140
- 230000005684 electric field Effects 0.000 claims description 29
- 210000001503 joint Anatomy 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 210000001519 tissue Anatomy 0.000 description 71
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 208000032843 Hemorrhage Diseases 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 208000034158 bleeding Diseases 0.000 description 4
- 230000000740 bleeding effect Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 210000002255 anal canal Anatomy 0.000 description 3
- 210000000664 rectum Anatomy 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 208000012671 Gastrointestinal haemorrhages Diseases 0.000 description 2
- 238000011298 ablation treatment Methods 0.000 description 2
- 210000000436 anus Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 208000035861 hematochezia Diseases 0.000 description 2
- 201000007772 internal hemorrhoid Diseases 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 208000016583 Anus disease Diseases 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 208000003251 Pruritus Diseases 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007803 itching Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The invention discloses a hemorrhoid ablation electrode assembly, a hemorrhoid ablation system and a tissue ablation system for a narrow space, comprising: an intermediate electrode configured to perform depth adjustment in an axial direction thereof; a cylindrical insulating support, the axis of which is provided with a channel for passing through the intermediate electrode; the first adsorption electrode and the second adsorption electrode are respectively configured to be insulated from the middle electrode, are fixedly arranged on the insulating support and are configured to carry out depth adjustment along the axial direction of the middle electrode, and a plurality of negative pressure holes which are uniformly formed in the surfaces of the first adsorption electrode and the second adsorption electrode are formed in the surfaces of the first adsorption electrode and the second adsorption electrode and are communicated with the negative pressure device; when the electrode assembly works, the negative pressure device captures target tissues through the negative pressure holes so that the target tissues are attached to the first adsorption electrode and the second adsorption electrode, and ablation is performed by forming a current path through the target tissues based on different electrical parameters of the middle electrode, the first adsorption electrode and the second adsorption electrode.
Description
Technical Field
The invention relates to the technical field of hemorrhoid ablation, in particular to a hemorrhoid ablation electrode assembly, a hemorrhoid ablation electrode system and a tissue ablation system for a narrow space.
Background
Hemorrhoids are a common anal disease and are mainly manifested as soft swelling of the protrusions inside and outside the anus. It is formed by the distension or stretching of the venous plexus at the lower end of the rectum or in the anal canal. After hemorrhoids, patients may experience symptoms such as hematochezia, pain, itching and the like, which brings inconvenience to daily life. Hemorrhoids can be generally classified into three types, internal hemorrhoids, external hemorrhoids, and mixed hemorrhoids. Internal hemorrhoids occur above dentate lines, and the surface is covered with mucous membrane, often accompanied by hematochezia, and may deviate from the anus when serious.
The existing hemorrhoid ablation device is mainly used for directly ablating hemorrhoids through an ablation electrode, but because the space at the lower end of a rectum or in an anal canal is smaller, especially under the condition that the internal hemorrhoid part of internal hemorrhoid or mixed hemorrhoid has serious attacks, the space is narrower, and the ablation electrode is required to well capture target hemorrhoid tissues and cannot cause damage to non-target tissues, so that the problem is more difficult.
Disclosure of Invention
A first object of the present invention is to provide a hemorrhoid ablation electrode assembly, a second object of the present invention is to provide a hemorrhoid ablation system, and a third object is to provide a tissue ablation system for a narrow space, so as to solve the problem that an ablation electrode is difficult to capture target tissue for effective ablation in the prior art.
A first aspect of the present invention is directed to a hemorrhoid ablation electrode assembly, comprising: an intermediate electrode configured to perform depth adjustment in an axial direction thereof; a cylindrical insulating support, the axis of which is provided with a channel for passing through the intermediate electrode; the first adsorption electrode and the second adsorption electrode are respectively configured to be insulated from the middle electrode and symmetrically arranged along the axial direction of the middle electrode, the first adsorption electrode and the second adsorption electrode are fixedly arranged on the insulating support and configured to perform depth adjustment along the axial direction of the middle electrode, a plurality of negative pressure holes which are uniformly arranged are formed in the surfaces of the first adsorption electrode and the second adsorption electrode, and the negative pressure holes are communicated with a negative pressure device; when the electrode assembly works, the negative pressure device captures target tissues through the negative pressure holes so that the target tissues are attached to the first adsorption electrode and the second adsorption electrode, and ablation is performed by forming a current path through the target tissues based on different electric parameters of the intermediate electrode, the first adsorption electrode and the second adsorption electrode.
Preferably, the electrode assembly further comprises a first arc electrode and a second arc electrode which are respectively matched with the first adsorption electrode and the second adsorption electrode, the inner surface of the first arc electrode is matched and abutted with the outer edge of the first adsorption electrode, and the inner surface of the second arc electrode is matched and abutted with the outer edge of the second adsorption electrode; the adjustment distance between the distal ends of the first adsorption electrode and the second adsorption electrode and the distal ends of the first arc electrode and the second arc electrode is 0-30 mm.
Preferably, the first adsorption electrode and the second adsorption electrode are insulated from each other, the first arc electrode and the second arc electrode are insulated from each other, the first adsorption electrode is connected with the first arc electrode to form a first electrode, and the second adsorption electrode is connected with the second arc electrode to form a second electrode; when capturing target tissue, the first adsorption electrode and the second adsorption electrode are respectively in interference fit and butt joint with the first arc electrode and the second arc electrode.
Preferably, the first adsorption electrode and the second adsorption electrode are electrically connected with each other to form a first electrode, the first arc electrode and the second arc electrode are electrically connected with each other to form a second electrode, and the first electrode and the second electrode are mutually insulated before ablation.
Preferably, the first electrode is configured as a first voltage parameter and the second electrode is configured as a second voltage parameter to form an electrical loop of the first electrode to the second electrode for ablating the target tissue.
Preferably, the first electrode and the second electrode are configured as a first voltage parameter and the intermediate electrode is configured as a second voltage parameter to form an electrical loop of the first electrode to the intermediate electrode and the second electrode to the intermediate electrode, respectively, to ablate the target tissue.
Preferably, the inner diameter of the channel of the insulating support is matched with the outer diameter of the middle electrode to provide guiding and stabilizing effects for the middle electrode, a puncture tip is arranged at the distal end of the middle electrode, the puncture tip can be adjusted in the electric field space range formed by the first adsorption electrode and the second adsorption electrode, the adjustment distance range of the puncture tip relative to the proximal end of the first adsorption electrode is-5 mm to 30mm, and the diameter of the rod part of the middle electrode is 1 to 2mm.
Preferably, the negative pressure hole has a length direction, the length direction extends along the radian of the first adsorption electrode or the second adsorption electrode, and the distance between the proximal end and the distal end of the first adsorption electrode and the second adsorption electrode is 0-30 mm.
The second scheme provided by the invention is a hemorrhoid ablation system, which comprises any hemorrhoid ablation electrode assembly, an ablation cavity tube and a handle, wherein the inner diameter of the ablation cavity tube is 8-14 mm, the ablation cavity tube is fixedly connected with the handle, the electrode assembly is arranged at the far end inside the ablation cavity tube, the far end of the electrode assembly is 1-5 mm away from the far end of the ablation cavity tube, the shape of the periphery of the electrode assembly is matched with the shape of the inner wall of the ablation cavity tube, the ablation cavity tube is communicated with a negative pressure device, when target tissues are captured, the far end of the ablation cavity tube is close to the target tissues, and the negative pressure device is started, and the target tissues are absorbed into the far end of the ablation cavity tube by negative pressure and are attached to the electrode assembly, so that ablation is performed.
Preferably, the negative pressure device comprises a piston cavity arranged in the handle, a manual negative pressure button fixedly connected with a piston of the piston cavity, a first one-way valve communicated with the piston cavity and the ablation cavity tube, and a second one-way valve communicated with the piston cavity and the outside, the piston of the piston cavity is driven to move by pressing the manual negative pressure button to suck gas in the ablation cavity tube into the piston cavity through the first one-way valve, the manual negative pressure button is loosened, part of the gas in the piston is discharged through the second one-way valve, and negative pressure adsorption capturing on target tissues is formed; and/or the negative pressure device comprises a pipeline connected with the ablation cavity tube and negative pressure equipment, and the negative pressure equipment is started to discharge air in the ablation cavity tube.
The third aspect of the present invention is a tissue ablation system for a small space, comprising an ablation electrode assembly as described in any of the above.
Compared with the prior art, the invention has the following advantages:
1. According to the technical scheme, the first adsorption electrode and the second adsorption electrode are arranged, the negative pressure holes are formed in the surfaces of the first adsorption electrode and the second adsorption electrode and are communicated with the negative pressure device, so that the problem that hemorrhoids tissues are difficult to capture in the prior art is solved, the hemorrhoids tissues can be accurately captured, the target hemorrhoids tissues can be tightly attached to the first adsorption electrode and the second adsorption electrode, and the contact surface is increased to remarkably improve the subsequent ablation effect; second, since three electrodes of the intermediate electrode, the first suction electrode and the second suction electrode are provided, and the first suction electrode and the second suction electrode are respectively insulated from the intermediate electrode, a possibility of more ablation electric fields is provided.
2. According to the technical scheme, the first adsorption electrode and the second adsorption electrode are restrained by a tubular space formed by the first arc electrode and the second arc electrode, meanwhile, the insulation support provides stable support, the first adsorption electrode and the second adsorption electrode are more stable when being subjected to depth adjustment, the distance between the distal ends of the first adsorption electrode and the second adsorption electrode and the distal ends of the first arc electrode and the second arc electrode can be adjusted according to the size/volume of target tissues, and when the target tissues are larger, the distal ends of the first adsorption electrode and the second adsorption electrode are adjusted to be relatively far away from the distal ends of the first arc electrode and the second arc electrode, so that more tissues can be ablated, and the ablation device is more flexible. In addition, since the first arc electrode and the second arc electrode are both electrodes, 5 electrodes are provided in the embodiment, so that a richer possibility of an ablation electric field/ablation area can be provided, and a plurality of choices of the ablation electric field/area can be provided for an operator according to the actual condition of a patient.
3. According to the technical scheme, the configuration mode of the electric connection of the plurality of electrodes and the depth of the first/second adsorption electrodes and the middle electrode are combined for adjustment, so that the ablation electric field/ablation area has higher adjustability and flexibility.
Drawings
FIG. 1 is a schematic view of the hemorrhoid ablation electrode assembly of the present invention;
FIG. 2 is an exploded view of the hemorrhoid ablation electrode assembly of the present invention;
FIG. 3 is a cross-sectional view of a hemorrhoid ablation electrode assembly of the present invention;
FIG. 4 is a cross-sectional view of a hemorrhoid ablation electrode assembly of the present invention;
FIG. 5 is a schematic view of a hemorrhoid ablation system of the present invention;
fig. 6 is a cross-sectional view of the hemorrhoid ablation system of the present invention.
Reference numerals illustrate:
1-an intermediate electrode; 101-piercing the tip; 2-an insulating support; 201-channel; 3-a first adsorption electrode; 4-a second adsorption electrode; 5-a first arcuate electrode; 6-a second arc electrode; 7-a negative pressure hole; 8-ablating a lumen; 9-a handle; 901-an inner electrode knob; 902-an outer electrode knob; 903-pressure release button; 904-manual negative pressure button; 905-piston chamber; 906-a first one-way valve; 907-a second one-way valve; 908-pressure relief valve.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It is to be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are 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", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
It should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
In the prior art, the minimally invasive ablation of hemorrhoids is performed by directly adopting an ablation electrode, but because the space at the lower end of the rectum or in the anal canal is smaller, hemorrhoids tissues are often ablated by adopting a single electrode, a negative plate is required to be additionally configured, the operation is inconvenient, and the capturing and the accurate control of an ablation area of target tissues are very difficult.
First embodiment
Referring to fig. 1 and 2, the present embodiment provides a hemorrhoid ablation electrode assembly, comprising: an intermediate electrode 1 configured to perform depth adjustment in an axial direction thereof; a cylindrical insulating holder 2 having an axis provided with a passage 201 for passing through the intermediate electrode 1; the first adsorption electrode 3 and the second adsorption electrode 4 are respectively configured to be insulated from the middle electrode 1 and symmetrically arranged along the axial direction of the middle electrode 1, the first adsorption electrode 3 and the second adsorption electrode 4 are fixedly arranged on the insulating support 2 and configured to perform depth adjustment along the axial direction of the middle electrode 1, a plurality of negative pressure holes 7 which are uniformly arranged are formed in the surfaces of the first adsorption electrode 3 and the second adsorption electrode 4, and the negative pressure holes 7 are communicated with a negative pressure device; when the electrode assembly works, the negative pressure device captures target tissues through the negative pressure holes 7 so that the target tissues are attached to the first adsorption electrode 3 and the second adsorption electrode 4, and ablation is performed by forming a current path through the target tissues based on different electrical parameters configured for the intermediate electrode 1, the first adsorption electrode 3 and the second adsorption electrode 4.
In the technical scheme of the embodiment, the first adsorption electrode 3 and the second adsorption electrode 4 are arranged at first, the negative pressure holes 7 are arranged on the surfaces of the first adsorption electrode 3 and the second adsorption electrode 4, and the negative pressure holes 7 are communicated with the negative pressure device, so that the problem that hemorrhoids tissues are difficult to catch in the prior art is solved, hemorrhoids tissues can be accurately caught, the target hemorrhoids tissues can be tightly attached to the first adsorption electrode 3 and the second adsorption electrode 4, and the contact surface is enlarged to obviously improve the subsequent ablation effect; second, since three electrodes of the intermediate electrode 1, the first suction electrode 3 and the second suction electrode 4 are provided, and the first suction electrode 3 and the second suction electrode 4 are respectively insulated from the intermediate electrode 1, thereby providing a possibility of more ablation electric fields. For example, the first suction electrode 3 and the second suction electrode 4 are set as positive electrodes (the first suction electrode 3 and the second suction electrode 4 are electrically connected), and the intermediate electrode 1 is set as negative electrode, forming an ablation electric field; or the first adsorption electrode 3 is set as one positive electrode, the second adsorption electrode 4 is set as the other positive electrode (the first adsorption electrode 3 and the second adsorption electrode 4 are not electrically connected with each other), and the middle electrode 1 is set as a negative electrode, so as to form an ablation electric field; alternatively, the first adsorption electrode 3 is set as a positive electrode, and the second adsorption electrode 4 is set as a negative electrode, so that a new ablation electric field is formed. Such as to provide a variety of ablation fields, the selection of which is appropriate depending on the patient's condition. In addition, in the present embodiment, the intermediate electrode 1, the first suction electrode 3 and the second suction electrode 4 can be adjusted in depth, so that the size of the accommodating space formed by the first suction electrode 3 and the second suction electrode 4 and the intensity and the range of the ablation electric field formed between the intermediate electrode 1 and the target tissue/the first suction electrode 3 and the second suction electrode 4 can be adjusted according to the size/volume of the target tissue, thereby realizing precise control of the ablation intensity and the range. To summarize, the technical solution of this embodiment is directed to the size/volume of the hemorrhoid tissue, and the size of the accommodating space formed by the first adsorption electrode 3 and the second adsorption electrode 4 can be adjusted, and the depth of the middle electrode 1 can also be adjusted, so that the acting range of the ablation electrode to the target tissue can be adjusted, and meanwhile, the multiple electrodes can be selectively configured to form different ablation electric fields, so that the solution of this embodiment has higher flexibility. The rapid and accurate ablation operation can be carried out on focuses with different sizes, the possibility of multiple times of ablation is reduced, the operation time is shortened, and the risk of secondary hazard is reduced. Of course, the above-mentioned configuration mode of the electric field corresponds to ablation electric fields such as radio frequency, but the structure of the embodiment is also applicable to active heating electrodes, that is, simply adopting heating ablation.
Preferably, the electrode assembly further comprises a first arc electrode 5 and a second arc electrode 6 which are respectively matched with the first adsorption electrode 3 and the second adsorption electrode 4, the inner surface of the first arc electrode 5 is matched and abutted with the outer edge of the first adsorption electrode 3, and the inner surface of the second arc electrode 6 is matched and abutted with the outer edge of the second adsorption electrode 4; the adjustment distance c between the distal ends of the first suction electrode 3 and the second suction electrode 4 and the distal ends of the first arc electrode 5 and the second arc electrode 6 is in the range of 0 to 30mm.
In the technical solution of the present embodiment, the first arc electrode 5 and the second arc electrode 6 are provided, and compared with the previous embodiment, the present embodiment has a better effect in that a more stable structure and more precise ablation intensity and area control can be provided. With continued reference to fig. 1 and 2, the first and second suction electrodes 3 and 4 are constrained by the tubular space formed by the first and second arc electrodes 5 and 6, while the insulating support 2 provides a stable support, is more stable when the first and second suction electrodes 3 and 4 are adjusted in depth, and the distance between the distal ends of the first/second suction electrodes 4 and the distal ends of the first/second arc electrodes 6 can be adjusted according to the size/volume of the target tissue, such as when the target tissue is large, the distal ends of the first/second suction electrodes 4 are adjusted relatively far from the distal ends of the first/second arc electrodes 6, so that more tissue can be ablated, and thus more flexible. In addition, since the first arc electrode 5 and the second arc electrode 6 are both electrodes, in this embodiment, there are 5 electrodes, which can provide a richer possibility of ablation electric field/ablation area, and can provide a plurality of choices of ablation electric field/ablation area for the operator according to the actual situation of the patient.
Preferably, the first adsorption electrode 3 and the second adsorption electrode 4 are insulated from each other, the first arc electrode 5 and the second arc electrode 6 are insulated from each other, the first adsorption electrode 3 and the first arc electrode 5 are connected to form a first electrode, and the second adsorption electrode 4 and the second arc electrode 6 are connected to form a second electrode; when capturing the target tissue, the first adsorption electrode 3 and the second adsorption electrode 4 are respectively in interference fit and butt joint with the first arc electrode 5 and the second arc electrode 6.
Based on the above embodiments, the present embodiment provides a configuration manner in which one of the electrodes is electrically connected. The electrical connection configuration manner of the present embodiment can also form various ablation electric fields/ablation regions. When the first adsorption electrode 3 is connected with the first arc electrode 5 to form a first electrode, and the second adsorption electrode 4 is connected with the second arc electrode 6 to form a second electrode, only external ablation can be performed, namely, one of the first electrode and the second electrode is set to be positive, and the other is set to be negative; the internal and external ablations can be simultaneously carried out, 2 middle electrodes 1, first electrodes and second electrodes are selected as positive electrodes, and 1 middle electrode is selected as negative electrode, so that the internal and external ablations can be simultaneously realized, and the specific selection of which two electrodes are positive electrodes and which electrode is negative electrode can be combined with the specific condition of the target hemorrhoidal tissue; it is also possible to configure the intermediate electrode 1 as an active heat-generating electrode (in this case, a negative plate needs to be provided) by performing only the internal ablation. Of course, not only the electrode polarity is selected, but also the depth of the first/second adsorption electrodes 4 and the middle electrode 1 can be adjusted at the same time, so that the ablation electric field/ablation area has higher adjustability and flexibility. When capturing the target tissue, the first adsorption electrode 3 and the second adsorption electrode 4 are respectively in interference fit and butt joint with the first arc electrode 5 and the second arc electrode 6, which is beneficial to not only the stability of electric connection, but also the stability of the target ablation tissue, the electrode assembly and the ablation cavity tube 8 of the invention, the stable tension state of the target tissue, the puncture of the target tissue by the intermediate electrode 1, the destabilization prevention and the bleeding risk reduction.
Preferably, the first adsorption electrode 3 and the second adsorption electrode 4 are electrically connected to each other to form a first electrode, the first arc electrode 5 and the second arc electrode 6 are electrically connected to each other to form a second electrode, and the first electrode and the second electrode are mutually insulated before ablation.
Based on the above embodiments, another configuration method for electrical connection of the electrodes is provided in this embodiment. The electrical connection configuration manner of the present embodiment can also form various ablation electric fields/ablation regions. When the first adsorption electrode 3 and the second adsorption electrode 4 are electrically connected with each other to form a first electrode, and the first arc electrode 5 and the second arc electrode 6 are electrically connected with each other to form a second electrode, only external ablation can be performed, and the first electrode and the second electrode are respectively set as a positive electrode and a negative electrode so as to realize external ablation; only the internal ablation may be performed, and the intermediate electrode 1 may be configured as an active heat-generating electrode (a negative plate is required to be configured). Also here, not only the electrode polarity selection is performed, but also the adjustment can be performed in combination with the depths of the first/second suction electrodes 4 and the intermediate electrode 1, so that the ablation electric field/ablation region has higher adjustability and flexibility. The specific adjustment means are not enumerated here and in any case the aim is to adjust the ablation electric field/area in combination with the choice of electrode polarity and electrode depth, all falling within the scope of protection of the inventive concept.
Preferably, the first electrode is configured as a first voltage parameter and the second electrode is configured as a second voltage parameter to form an electrical loop of the first electrode to the second electrode for ablating the target tissue.
The technical scheme of the embodiment can realize accurate control of the external ablation electric field no matter which electrode electric connection configuration scheme is combined.
Preferably, the first electrode and the second electrode are configured as a first voltage parameter, and the intermediate electrode 1 is configured as a second voltage parameter to form an electrical loop of the first electrode to the intermediate electrode 1 and the second electrode to the intermediate electrode 1, respectively, for ablating the target tissue.
In the technical solution of this embodiment, when the first electrode electrical connection configuration scheme is combined (i.e. the first adsorption electrode 3 is connected with the first arc electrode 5 to form a first electrode, the second adsorption electrode 4 is connected with the second arc electrode 6 to form a second electrode), when the first electrode and the middle electrode 1, and the second electrode and the middle electrode 1 respectively form 2 ablation electric fields/loops, the two electric fields are symmetrically arranged. When the above second electrode electrical connection configuration scheme is combined (i.e. the first adsorption electrode 3 and the second adsorption electrode 4 are electrically connected with each other to form a first electrode, the first arc electrode 5 and the second arc electrode 6 are electrically connected with each other to form a second electrode), when the first electrode and the middle electrode 1, the second electrode and the middle electrode 1 respectively form 2 ablation electric fields/loops, the two electric fields are in cladding and superposition arrangement. The operator can have more choices according to the actual situation.
Referring to fig. 3 and 4, preferably, the inner diameter of the channel 201 of the insulating support 2 cooperates with the outer diameter of the intermediate electrode 1 to provide guiding and stabilizing effects for the intermediate electrode 1, the distal end of the intermediate electrode 1 is provided with a piercing tip 101, the piercing tip 101 is adjustable within the electric field space formed by the first suction electrode 3 and the second suction electrode 4, the adjusting distance e of the piercing tip 101 relative to the proximal end of the first suction electrode 3 is in the range of-5 mm to 30mm, and the diameter f of the rod portion of the intermediate electrode 1 is 1 to 2mm.
For the ablation operation of hemorrhoidal tissues, the thinner the diameter of the rod part of the intermediate electrode 1 which plays roles of puncturing and ablation is, the smaller the bleeding risk is, but the thinner the rod part is, the more easily the instability is generated in the puncturing process, so that the puncturing is difficult. The technical scheme of this embodiment sets the diameter of the stem portion of the intermediate electrode 1 to 2mm, preferably 1.5mm, and sets up the channel 201 with matched size at the axis position of the insulating support 2 at the same time, thereby provide guiding and supporting acting force for the intermediate electrode 1, and, cooperate with the first adsorption electrode 3 and the second adsorption electrode 4 to adsorb and attach the hemorrhoid tissue to the first adsorption electrode 3 and the second adsorption electrode 4 through negative pressure, the hemorrhoid surface tissue is in stable tension state, thereby the intermediate electrode 1 can stab into the target hemorrhoid tissue more stably and reliably, and stab the bleeding risk can be reduced while stab stability can also be considered. That is, the three features of the first adsorption electrode 3 and the second adsorption electrode 4, that is, the stable adsorption and lamination of the hemorrhoid tissue, that the diameter of the rod part of the middle electrode 1 is set to be 1 to 2mm, and that the axial line of the insulating support 2 is provided with the channel 201 for guiding and supporting the middle electrode 1 are combined, so that the technical scheme of the embodiment can consider the puncture bleeding risk and stability, and is more beneficial to the hemorrhoid ablation operation. The "the adjustment distance of the puncture tip 101 with respect to the proximal end of the first suction electrode 3 is in the range of-5 mm to 30mm" in the present embodiment is based on the assumption that "the proximal end of the first suction electrode 3 is 0 point and positive in the distal direction of the first suction electrode 3".
Preferably, the negative pressure hole 7 has a length direction, the length direction extends along the spherical arc of the first adsorption electrode 3 or the second adsorption electrode 4, and the distance d between the proximal end and the distal end of the first adsorption electrode 3 and the second adsorption electrode 4 ranges from 0mm to 30mm.
According to the technical scheme of the embodiment, the length direction of the negative pressure hole 7 is along the spherical arc extending direction of the first adsorption electrode 3 or the second adsorption electrode 4, so that the hemorrhoid tissue can be adhered to the first adsorption electrode 3 and the second adsorption electrode 4 in a more uniform diffusion manner, and the hemorrhoid tissue can be ablated more uniformly. The product of this embodiment can be configured with a plurality of different types of products having a distance between the proximal end and the distal end of the first suction electrode 3 and the second suction electrode 4 ranging from 0 to 30mm, so that different patients can be better adapted.
Second embodiment
This example provides a hemorrhoid ablation system, including any one of the hemorrhoid ablation electrode assembly of the first embodiment, still include ablation lumen 8 and handle 9, the internal diameter a of ablation lumen 8 is 8 to 14mm, preferably 10mm, ablation lumen 8 with handle 9 fixed connection, electrode assembly set up in the inside distal end of ablation lumen 8, electrode assembly's distal end is apart from the distance b of ablation lumen 8 distal end is 1 to 5mm, preferably 3mm, electrode assembly's periphery shape with the inner wall shape cooperation of ablation lumen 8, ablation lumen 8 communicates with negative pressure device, when catching target tissue, the distal end of ablation lumen 8 is pressed close to target tissue, starts negative pressure device, target tissue is absorbed by negative pressure and is got into ablation lumen 8 distal end inside and laminating in electrode assembly, and then melts.
In the technical scheme of this embodiment, with the distal end that the hemorrhoid ablation electrode assembly of first embodiment set up in ablation chamber 8 is inside, when need carry out hemorrhoid ablation operation, press close to target hemorrhoid tissue with the distal end oral area of ablation chamber 8, start negative pressure device, through first absorption electrode 3 with negative pressure hole 7 on the second absorption electrode 4 adsorbs the laminating in first absorption electrode 3 and second absorption electrode 4 with target hemorrhoid tissue, with target ablation tissue with non-target ablation tissue effective isolation, and then carry out targeted ablation, accurate control target ablation region. The distal end of the electrode assembly is1 to 5mm from the distal end of the ablation lumen 8, reserving a sufficient safety margin for non-target ablated tissue.
Referring to fig. 5 and 6, it should be noted that the hemorrhoid ablation system of the present embodiment includes any hemorrhoid ablation electrode assembly of the first embodiment, and different electrodes in the assembly are connected to different contacts of the connection terminal through cables, so as to realize stable and adjustable power supply, and provide a basis for selecting different ablation electric fields. In addition, based on the better control device of the hemorrhoid ablation system, the internal ablation, the external ablation, the internal and external simultaneous ablation or the ablation according to the preset sequence can be performed on the target hemorrhoid tissue based on the preset program, so that the operability is greatly improved.
The electrodes may be arranged in different ways, or may be insulated from each other, and the electric field may be selectively arranged by arranging electric parameters through the power supply terminals of the electrodes.
With continued reference to fig. 5 and 6, preferably, the negative pressure device includes a piston cavity 905 disposed inside the handle 9, a manual negative pressure button 904 fixedly connected with the piston of the piston cavity 905, a first one-way valve 906 communicating the piston cavity 905 with the ablation cavity tube 8, and a second one-way valve 907 communicating the piston cavity 905 with the outside, the manual negative pressure button 904 is pressed to drive the piston of the piston cavity 905 to move so as to suck the gas in the ablation cavity tube 8 into the piston cavity 905 through the first one-way valve 906, the manual negative pressure button 904 is released, and part of the gas in the piston is discharged through the second one-way valve 907, so as to form negative pressure adsorption capture on the target tissue; and/or the negative pressure device comprises a pipeline connected with the ablation cavity tube 8 and negative pressure equipment, and the negative pressure equipment is started to discharge air in the ablation cavity tube 8.
Referring to fig. 6, in the technical solution of this embodiment, a manual negative pressure device and/or an automatic negative pressure apparatus is configured to exhaust air in the ablation lumen 8 so as to generate negative pressure, thereby realizing stable adsorption to the target hemorrhoidal tissue. The manual negative pressure button 904 can suck the gas in the ablation cavity tube 8 to form negative pressure by repeatedly pressing and releasing, so that the hemorrhoidal tissues are sucked into the ablation cavity tube 8 and fully contacted with the working electrode; specifically, pressing the manual negative pressure button 904 drives the piston of the piston cavity 905 to move forward, the volume in the cavity increases, and the gas in the ablation lumen is sucked through the first one-way valve 906 (the direction indicated by the arrow is the opening direction of the one-way valve, and the pressure release valve 908 of the other branch is not conducted when the pressure release button 903 is not pressed); releasing the manual negative pressure button 904, the piston of the piston cavity 905 is reset under the built-in spring (and drives the negative pressure button to reset), the volume of the piston cavity 905 is reduced, and the gas in the piston cavity 905 is discharged through the second one-way valve 907 (the direction indicated by the arrow is the opening direction of the one-way valve). Repeated pressing of the release manual negative pressure button 904 creates a negative pressure within the ablation lumen. The same effect is achieved after the connection of the pipeline connected with the ablation cavity tube 8 and the negative pressure equipment. The pressure release button 903 is used to open the air channel 201 inside and outside the ablation lumen, to unload the negative pressure after the ablation is completed, and to release the sucked hemorrhoidal tissues.
Preferably, pressure sensors may be disposed on the surfaces of the first and second suction electrodes 3 and 4 that contact the target tissue, so as to monitor the adhesion between the hemorrhoidal tissues and the electrodes.
Preferably, a temperature sensor is disposed on each electrode to achieve closed loop temperature control.
Preferably, a water-cooled pipeline is arranged in the ablation cavity tube 8 or the insulating bracket 2 or the inner part of the intermediate electrode 1 so as to reduce the carbonization risk in the ablation process.
Referring to fig. 5 and 6, an inner electrode adjusting knob 901 and an outer electrode adjusting knob 902, the inner electrode adjusting knob 901 is used for adjusting the depth of the middle electrode 1, the outer electrode adjusting knob 902 is used for adjusting the depth of the first adsorption electrode 3 and the second adsorption electrode 4, the connection adjusting manner of the inner electrode adjusting knob 901 and the middle electrode 1 and the connection adjusting manner of the outer electrode adjusting knob 902 and the insulating bracket 2 can adopt any position adjusting structure which can be realized in the prior art, and the invention is not limited herein. For example, the handles 9 are provided with grooves defining the movement of the inner electrode adjusting knob 901 and the outer electrode adjusting knob 902, respectively, and the depths of the intermediate electrode 1 and the insulating holder 2 are adjusted by adjusting the movement of the inner electrode adjusting knob 901 and the outer electrode adjusting knob 902 in the grooves.
It should be noted that the ablation method provided in this embodiment is not a treatment method during actual treatment, but a method during test or verification.
The invention also provides a tissue ablation system for a small space, comprising the ablation electrode assembly of any of the first embodiments. The target ablation tissue can be effectively captured, the ablation treatment area is effectively isolated from the non-ablation treatment area, more targeted treatment is performed, and other tissues are prevented from being damaged.
In addition, in the description of the present application, "proximal" and "proximal" of "proximal" are terms commonly used in the medical arts. Specifically, the "proximal end" is an end close to the operator, the "proximal end" is an end face close to the operator, the "distal end" is an end far away from the operator, and the "distal end face" is an end face far away from the operator.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is within the scope of the appended claims and their equivalents to fall within the scope of the invention.
Claims (11)
1. A hemorrhoid ablation electrode assembly, comprising:
An intermediate electrode configured to perform depth adjustment in an axial direction thereof;
a cylindrical insulating support, the axis of which is provided with a channel for passing through the intermediate electrode;
The first adsorption electrode and the second adsorption electrode are respectively configured to be insulated from the middle electrode and symmetrically arranged along the axial direction of the middle electrode, the first adsorption electrode and the second adsorption electrode are fixedly arranged on the insulating support and configured to perform depth adjustment along the axial direction of the middle electrode, a plurality of negative pressure holes which are uniformly arranged are formed in the surfaces of the first adsorption electrode and the second adsorption electrode, and the negative pressure holes are communicated with a negative pressure device;
When the electrode assembly works, the negative pressure device captures target tissues through the negative pressure holes so that the target tissues are attached to the first adsorption electrode and the second adsorption electrode, and ablation is performed by forming a current path through the target tissues based on different electric parameters of the intermediate electrode, the first adsorption electrode and the second adsorption electrode.
2. The hemorrhoid ablation electrode assembly of claim 1, wherein the electrode assembly further comprises a first arcuate electrode and a second arcuate electrode cooperatively disposed with the first suction electrode and the second suction electrode, respectively, an inner surface of the first arcuate electrode being cooperatively abutted with an outer edge of the first suction electrode, an inner surface of the second arcuate electrode being cooperatively abutted with an outer edge of the second suction electrode; the adjustment distance between the distal ends of the first adsorption electrode and the second adsorption electrode and the distal ends of the first arc electrode and the second arc electrode is 0-30 mm.
3. The hemorrhoid ablation electrode assembly of claim 2, wherein the first suction electrode and the second suction electrode are insulated from each other, the first arcuate electrode and the second arcuate electrode are insulated from each other, the first suction electrode and the first arcuate electrode are connected to form a first electrode, and the second suction electrode and the second arcuate electrode are connected to form a second electrode; when capturing target tissue, the first adsorption electrode and the second adsorption electrode are respectively in interference fit and butt joint with the first arc electrode and the second arc electrode.
4. The hemorrhoid ablation electrode assembly of claim 2, wherein the first suction electrode and the second suction electrode are electrically connected to each other to form a first electrode, the first arc electrode and the second arc electrode are electrically connected to each other to form a second electrode, and the first electrode and the second electrode are insulated from each other prior to performing ablation.
5. The hemorrhoid ablation electrode assembly of claim 3 or 4, wherein the first electrode is configured as a first voltage parameter and the second electrode is configured as a second voltage parameter to form an electrical loop of the first electrode to the second electrode to ablate the target tissue.
6. The hemorrhoid ablation electrode assembly of claim 3 or 4, wherein the first electrode and the second electrode are configured as a first voltage parameter and the intermediate electrode is configured as a second voltage parameter to form a first electrode-to-intermediate electrode, second electrode-to-intermediate electrode electrical loop, respectively, to ablate target tissue.
7. The hemorrhoid ablation electrode assembly of claim 1, wherein the channel inner diameter of the insulating support cooperates with the outer diameter of the intermediate electrode to provide guidance and stabilization to the intermediate electrode, the intermediate electrode distal end is provided with a piercing tip that is adjustable within the electric field space created by the first and second suction electrodes, the piercing tip is adjustable a distance ranging from-5 mm to 30mm relative to the first suction electrode proximal end, and the diameter of the intermediate electrode shaft is 1 to 2mm.
8. The hemorrhoid ablation electrode assembly of claim 1, wherein the negative pressure hole has a length direction along the arc extension direction of the first suction electrode or the second suction electrode, and the distance between the proximal end and the distal end of the first suction electrode and the second suction electrode ranges from 0mm to 30mm.
9. The hemorrhoid ablation system comprises the hemorrhoid ablation electrode assembly according to any one of claims 1 to 8, and further comprises an ablation cavity tube and a handle, wherein the inner diameter of the ablation cavity tube is 8-14 mm, the ablation cavity tube is fixedly connected with the handle, the electrode assembly is arranged at the far end inside the ablation cavity tube, the far end of the electrode assembly is 1-5 mm away from the far end of the ablation cavity tube, the shape of the periphery of the electrode assembly is matched with the shape of the inner wall of the ablation cavity tube, the ablation cavity tube is communicated with a negative pressure device, when target tissue is captured, the far end of the ablation cavity tube is close to the target tissue, the negative pressure device is started, and the target tissue is sucked into the far end of the ablation cavity tube by negative pressure and is attached to the electrode assembly, so that ablation is performed.
10. The hemorrhoid ablation system of claim 9, wherein the negative pressure device comprises a piston cavity arranged in the handle, a manual negative pressure button fixedly connected with a piston of the piston cavity, a first one-way valve communicated with the piston cavity and the ablation cavity tube, and a second one-way valve communicated with the piston cavity and the outside, the manual negative pressure button is pressed to drive the piston of the piston cavity to move so as to suck gas in the ablation cavity tube into the piston cavity through the first one-way valve, the manual negative pressure button is loosened, part of gas in the piston is discharged through the second one-way valve, and negative pressure adsorption capture on target tissues is formed;
And/or the negative pressure device comprises a pipeline connected with the ablation cavity tube and negative pressure equipment, and the negative pressure equipment is started to discharge air in the ablation cavity tube.
11. A tissue ablation system for small spaces comprising the ablation electrode assembly of any of claims 1-8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410362728.2A CN117958958A (en) | 2024-03-28 | 2024-03-28 | Hemorrhoid ablation electrode assembly, hemorrhoid ablation system and tissue ablation system for narrow space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410362728.2A CN117958958A (en) | 2024-03-28 | 2024-03-28 | Hemorrhoid ablation electrode assembly, hemorrhoid ablation system and tissue ablation system for narrow space |
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