CN220512903U - Monopole ablation probe - Google Patents
Monopole ablation probe Download PDFInfo
- Publication number
- CN220512903U CN220512903U CN202321519963.3U CN202321519963U CN220512903U CN 220512903 U CN220512903 U CN 220512903U CN 202321519963 U CN202321519963 U CN 202321519963U CN 220512903 U CN220512903 U CN 220512903U
- Authority
- CN
- China
- Prior art keywords
- needle body
- needle
- ablation probe
- handle
- medicine injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002679 ablation Methods 0.000 title claims abstract description 41
- 239000000523 sample Substances 0.000 title claims abstract description 24
- 230000005404 monopole Effects 0.000 title abstract description 10
- 239000003814 drug Substances 0.000 claims abstract description 60
- 238000002347 injection Methods 0.000 claims abstract description 49
- 239000007924 injection Substances 0.000 claims abstract description 49
- 229940079593 drug Drugs 0.000 claims description 14
- 206010028980 Neoplasm Diseases 0.000 abstract description 16
- 238000004520 electroporation Methods 0.000 abstract description 8
- 230000002427 irreversible effect Effects 0.000 abstract description 7
- 238000011298 ablation treatment Methods 0.000 abstract description 6
- 238000011282 treatment Methods 0.000 description 7
- 210000001519 tissue Anatomy 0.000 description 6
- 210000004881 tumor cell Anatomy 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008685 targeting Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 208000007660 Residual Neoplasm Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001640 apoptogenic effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004118 muscle contraction Effects 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Abstract
The utility model discloses a monopole ablation probe, belongs to a monopole ablation probe, and solves the technical problem of incomplete ablation caused by the fact that the effective field intensity of irreversible electroporation cannot cover the whole tumor tissue in the prior art. The needle comprises a needle body, wherein the needle body is provided with a proximal end and a distal end which are opposite to each other, a needle head is formed at the distal end position of the needle body, and an insulating tube is movably connected to the outer part of the needle body; a plurality of groups of medicine injection holes are formed in the needle body and are close to one side of the needle head, medicine injection channels for medicine circulation are formed in the needle body, and the plurality of groups of medicine injection holes are respectively communicated with the medicine injection channels; the proximal end position of the needle body is fixed in the handle, and an electrode adjusting assembly is arranged on the handle and used for adjusting the relative position of the insulating tube and the needle body; the cable assembly is electrically connected with the needle body. The monopole ablation probe can be better used for tumor ablation treatment, and has wide application range and convenient use.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a monopole ablation probe.
Background
Irreversible electroporation (Irreversible Electroporation, IRE) ablation technology is a completely new tumor ablation technology that induces apoptotic necrosis of cells by applying a high voltage pulsed electric field to the target cells to cause irreversible electroporation of the cells. As a selective ablation technique, the method can effectively destroy the target tumor while preserving the tissue structure and minimizing the damage to blood vessels and other important system structures, and has the advantages of clear boundary of an ablation area, short treatment time, quick recovery after treatment and the like.
At present, irreversible electroporation technology has an exciting therapeutic effect in the clinical application at home and abroad, but has some limitations at the same time; for example, there is a phenomenon of incomplete ablation of a target tumor, because the tumor shape in clinic is complex and variable, and although the needle placement and needle placement number for the target tumor can be reasonably designed by modeling before surgery, for tumors that are not regular in shape or too large in volume, the effective field strength of irreversible electroporation cannot cover the entire tumor tissue, resulting in the presence of an area of incomplete ablation.
Disclosure of Invention
The utility model aims to provide a monopole ablation probe so as to solve the technical problem of incomplete ablation caused by the fact that the effective field intensity of irreversible electroporation cannot cover the whole tumor tissue in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a monopole ablation probe, comprising: the needle body is provided with a proximal end and a distal end which are opposite to each other, a needle head is formed at the distal end position of the needle body, and an insulating tube is movably connected to the outer part of the needle body; a plurality of groups of medicine injection holes are formed in the needle body and close to one side of the needle head, medicine injection channels for medicine circulation are formed in the needle body, and the plurality of groups of medicine injection holes are respectively communicated with the medicine injection channels; the proximal end position of the needle body is fixed in the handle, and an electrode adjusting assembly is arranged on the handle and used for adjusting the relative position of the insulating tube and the needle body; and the cable component is electrically connected with the needle body.
The technical effect of adopting the technical scheme is as follows: the electrode can output high-voltage steep pulse required by ablation through the needle body and the cable assembly electrically connected with the needle body; the medicament injection channel and the plurality of groups of medicament injection holes are arranged on the needle body, so that medicaments can act on tumor cells through the medicament injection channel and the medicament injection holes; through being provided with electrode adjustment subassembly for personnel can be according to the tumour of equidimension, the length of adaptation adjustment electrode, in order to reach better treatment.
Alternatively or preferably, the electrode adjusting assembly includes a chute provided at an outer wall of the handle and axially provided along the handle, a plurality of clamping grooves arranged along a length direction of the chute, and a moving button assembly.
Optionally or preferably, the moving button assembly includes an adjusting part, a sliding part slidingly connected with the chute, and a fixing part connected with the outer side of the insulating tube, the adjusting part, the sliding part and the fixing part are connected with each other, and the sliding part is of an elastic structure;
one side of the adjusting part is connected with a latch, and the latch is used for being clamped with the clamping groove.
Optionally or preferably, the latch is disposed at one end of the adjusting portion and near one side of the handle, and the other end of the adjusting portion is a tilting end.
Optionally or preferably, the end face of one side of the adjusting part far away from the handle is provided with an anti-slip layer.
Optionally or preferably, a fixing part and a connecting part are respectively arranged in the handle, the fixing part is used for fixing the needle body, one end, close to the needle body, of the connecting part is communicated with the medicament injection channel, and the other end of the connecting part is connected with a luer connector
Alternatively or preferably, a plurality of sets of said drug injection holes are uniformly spaced on a side wall of said needle body at a distal position and within 40mm from said needle head; the distance between each group of the drug injection holes adjacent to each other in the axial direction of the needle body is 5mm; each group of the medicine injection holes are uniformly arranged in the circumferential direction of the needle body, and the number of the arranged medicine injection holes is 4.
Alternatively or preferably, the distance between the adjacent clamping grooves is 5mm, and the number of the clamping grooves is 9.
Based on the technical scheme, the embodiment of the utility model at least has the following technical effects:
according to the monopole ablation probe provided by the utility model, personnel can realize the adaptive adjustment of the length of the electrode by pressing and sliding the adjusting part according to tumors with different sizes, and the electrode outputs high-voltage steep pulses required by ablation to perform ablation treatment; through being provided with the medicament injection passageway in the needle body that is used for the ablation, and the needle body surface is provided with the medicine injection hole, after pulse treatment is over, pours into the target medicament into the medicament injection passageway through the micropump, and the target medicament flows through the medicine injection hole, acts on target tumor position, supplementary clearance unobscured tumor tissue.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a monopolar ablation probe of the present utility model;
FIG. 2 is a top view of a monopolar ablation probe of the present utility model;
FIG. 3 is a front view of a monopolar ablation probe of the present utility model;
FIG. 4 is a schematic view of a partial structure of a needle body in the monopolar ablation needle of the present utility model;
FIG. 5 is a partial cross-sectional view of the needle body of the monopolar ablation needle of the present utility model;
FIG. 6 is a front cross-sectional view of a monopolar ablation needle of the present utility model;
fig. 7 is an enlarged partial schematic view of the portion a in fig. 6.
In the figure: 1. a needle body; 101. a medicament injection channel; 102. a needle; 103. a drug injection hole; 2. an insulating tube; 3. a movement button assembly; 301. an adjusting section; 302. a sliding part; 303. a fixing part; 304. latch teeth; 4. a handle; 401. a chute; 402. a clamping groove; 403. a fixing member; 404. a connecting piece; 5. a luer fitting; 6. a cable assembly.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all of them, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present utility model without making any inventive effort are within the scope of the present utility model.
[ example ]
Referring to fig. 1 to 3, a monopole ablation probe includes a needle body 1, a handle 4 and a cable assembly 6 connected in sequence; wherein the needle body 1 has opposite proximal and distal ends, in this embodiment, the proximal and distal ends are the ends that are farther from the user and the ends that are closer to the user from the perspective of the probe user.
Referring to fig. 4 to 5, a medicament injection channel 101 for medicament circulation is formed in a needle body 1, and a needle head 102 is formed at a distal end position on the needle body 1, wherein the needle head 102 is a triangular puncture surface, so that an ablation probe can conveniently and smoothly penetrate into human tissues; a plurality of groups of medicine injection holes 103 are arranged on the needle body 1 and near one side of the needle head 102, and the medicine injection holes 103 are communicated with the medicine injection channel 101.
In this embodiment, the multiple groups of drug injection holes 103 are uniformly spaced on the side wall of the needle body 1 at the distal end position and within 40mm from the needle 102, that is, the needle 102 is taken as the origin, the multiple groups of drug injection holes 103 are uniformly spaced on the axial position of the needle body 1 and the distance between the group of drug injection holes 103 farthest from the needle 102 and the needle 102 is not more than 40mm; the distance between adjacent medicine injection holes 103 in the axial direction of the needle body 1 is 5mm, and each group of medicine injection holes 103 is uniformly arranged in the circumferential direction of the needle body, and the number of the arranged medicine injection holes is 4. The medicine entering the medicine injection passage 101 can enter the surrounding human tissue through the above-mentioned plural medicine injection holes 103.
Referring to fig. 2, 6 and 7, an insulation tube 2 is sleeved outside the needle body 1, and a portion of the needle body 1 extending out of the insulation tube 2 is used as an electrode for outputting high-voltage steep pulses required for ablation. One end of the insulating tube 2, which is close to the handle 4, is connected with an electrode adjusting assembly, and the covering depth of the insulating tube 2 to the distal end position of the needle body 1 can be adjusted through the electrode adjusting assembly, so that the length of the electrode is adjusted, and the ablation treatment of tumors with different sizes is adapted.
Specifically, the electrode adjusting assembly includes a bar-shaped chute 401 disposed on the outer surface of the handle 4 and axially disposed along the handle 4, a plurality of clamping grooves 402 disposed along the length direction of the chute 401, and a moving button assembly 3; the moving button assembly 3 includes a fixed portion 303 fixedly connected to the outer wall of the insulating tube 2, a sliding portion 302 fixedly connected to the fixed portion 303, and an adjusting portion 301 connected to the sliding portion 302, wherein the sliding portion 302 is of an elastic structure.
The adjusting part 301 has a proximal end and a distal end similar to the needle body 1, and a latch 304 is fixedly connected to the distal end of the adjusting part 301 and one side close to the handle 4, and the latch 304 is used for being in snap connection with the latch 402; by the elastic sliding portion 302 and the adjusting portion 301, the latch 304 can be engaged with the latch 402 or the latch 304 can be disengaged from the latch 402, and when the latch 304 is disengaged from the latch 402, the sliding portion 302 can slide in the slide groove 401.
Specifically, the adjusting portion 301 has a rectangular structure with rounded corners, and the proximal end of the adjusting portion 301 is tilted upward to form a tilted end; the end surface of one side of the adjusting part 301 far away from the handle 4 is provided with an anti-slip layer, and the anti-slip layer makes the surface of the tilting end rough, so that the friction force between the fingers of a user and the adjusting part 301 and the tilting end can be improved, and the user can slide the adjusting part 301 in the sliding groove 401 conveniently.
Further, the sliding portion 302 may be a spring mechanism, and a person may push down the tilting end to disengage the latch 304 at the other end of the adjusting portion 301 from the latch 402; in other embodiments, the sliding portion 302 may alternatively have other elastic mechanisms such as rubber mounts.
In this embodiment, the number of the plurality of slots 402 is 9, and the distance between adjacent slots 402 is 5mm.
It can be appreciated that the covering depth of the insulating tube 2 to the needle body 1 can be adjusted by the electrode adjusting assembly, so as to adjust the electrode length, and when the latch 304 is engaged with the most distal latch 402, the needle body 1 is completely located in the insulating tube 2; when the latch 304 is engaged with the proximal-most latch 402, the length of the needle body 1 extending out of the insulating tube 2 is 40mm, i.e. the electrode length is 40mm; the personnel can press the tilting end on the adjusting part 301 so as to clamp the clamping teeth 304 in the clamping grooves 402 at different positions, so that the length of the electrode is between 5mm and 40mm, and the electrode is adjusted by taking 5mm as the minimum unit.
In this embodiment, the handle 4 is respectively provided with a fixing member 403 and a connecting member 404, and the proximal end of the needle body 1 extends into the handle 4 and is fixed by the fixing member 403; meanwhile, the proximal end of the needle body 1 is welded with the connecting piece 404, one end of the connecting piece 404, which is close to the needle body 1, is communicated with the medicament injection channel 101 in the needle body 1, and the other end of the connecting piece 404 is connected with a luer connector 5; a person may pump medication through the luer fitting 5 to the medication injection channel 101 through the connector 404 and eventually deliver the medication to a target location through the multiple sets of medication injection holes 103.
In this embodiment, the cable assembly 6 extends into the handle 4 through an opening in the proximal end of the handle 4 and is electrically connected to the needle 1 for use in the steep pulse ablation treatment of the electrode.
In the actual working process, personnel can realize the adaptive adjustment of the electrode length within the range of 5mm-40mm by pressing and sliding the adjusting part 301 according to tumors with different sizes, and the high-voltage steep pulse required by the ablation is output by the electrode to carry out the ablation treatment; after the steep pulse ablation treatment, a proper amount of targeting agent can be injected into the agent injection channel 101 through the luer connector 5 by an external micropump, and the targeting agent is extruded out through a plurality of groups of drug injection holes 103 on the needle body 1 and acts on tumor cells; at this time, the tumor cells have nano-scale perforation on the surface due to electroporation effect, so that the targeting agent can be injected into the tumor cells; therefore, after the steep pulse treatment is finished, the medicine is injected again for treatment, so that the residual tumor cells are killed more.
In addition, the ablation probe can combine pulsed electric field ablation with drug treatment, so that the output pulse field intensity can be properly reduced when the ablation is performed by using high-voltage steep pulses, thereby reducing the degree of muscle contraction and further reducing clinical complications.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A monopolar ablation probe, comprising:
the needle body (1), the needle body (1) is provided with a proximal end and a distal end which are opposite, a needle head (102) is formed at the distal end position of the needle body (1), and an insulating tube (2) is movably connected to the outside of the needle body (1); a plurality of groups of medicine injection holes (103) are formed in the needle body (1) and close to one side of the needle head (102), medicine injection channels (101) for medicine circulation are formed in the needle body (1), and the plurality of groups of medicine injection holes (103) are respectively communicated with the medicine injection channels (101);
the proximal end position of the needle body (1) is fixed in the handle (4), and an electrode adjusting assembly is arranged on the handle (4) and used for adjusting the relative position of the insulating tube (2) and the needle body (1);
the cable assembly (6), the cable assembly (6) with needle (1) electric connection.
2. The monopolar ablation probe according to claim 1, wherein the electrode adjustment assembly comprises a chute (401) provided on an outer wall of the handle (4) and axially provided along the handle (4), a plurality of clamping grooves (402) arranged along a length direction of the chute (401), and a movement button assembly (3).
3. The monopolar ablation probe according to claim 2, wherein the mobile button assembly (3) comprises an adjusting portion (301), a sliding portion (302) slidingly connected with the chute (401), and a fixing portion (303) externally connected with the insulating tube (2), the adjusting portion (301), the sliding portion (302) and the fixing portion (303) are mutually connected, and the sliding portion (302) is of an elastic structure;
one side of the adjusting part (301) is connected with a latch (304), and the latch (304) is used for being clamped with the clamping groove (402).
4. A monopolar ablation probe according to claim 3, wherein the latch (304) is provided on the adjustment portion (301) near one side of the needle (102), and the other end of the adjustment portion (301) is a tilting end.
5. The monopolar ablation probe according to claim 4, wherein the adjusting portion (301) is provided with an anti-slip layer at a side end surface remote from the handle (4).
6. The monopolar ablation probe according to claim 1, wherein a fixing piece (403) and a connecting piece (404) are respectively arranged on the handle (4), the fixing piece (403) is used for fixing the needle body (1), one end, close to the needle body (1), of the connecting piece (404) is communicated with the medicament injection channel (101), and the other end of the connecting piece (404) is connected with a luer connector (5).
7. The monopolar ablation probe according to claim 1, wherein a plurality of groups of the drug injection holes (103) are uniformly spaced on a side wall of the needle body (1) at a distal end position and within 40mm from the needle head (102); the distance between each group of the drug injection holes (103) adjacent to each other in the axial direction of the needle body (1) is 5mm; each group of the medicine injection holes (103) are uniformly arranged in the circumferential direction of the needle body (1), and the number of the arranged medicine injection holes is 4.
8. The monopolar ablation probe according to claim 5, wherein a distance between adjacent clamping grooves (402) is 5mm, and the number of the clamping grooves (402) is 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321519963.3U CN220512903U (en) | 2023-06-14 | 2023-06-14 | Monopole ablation probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321519963.3U CN220512903U (en) | 2023-06-14 | 2023-06-14 | Monopole ablation probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220512903U true CN220512903U (en) | 2024-02-23 |
Family
ID=89937243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321519963.3U Active CN220512903U (en) | 2023-06-14 | 2023-06-14 | Monopole ablation probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220512903U (en) |
-
2023
- 2023-06-14 CN CN202321519963.3U patent/CN220512903U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200054874A1 (en) | Electrode introducer device | |
| US20100298761A1 (en) | Electroporation device with improved tip and electrode support | |
| US20070239248A1 (en) | Cardiac stimulation electrodes, delivery devices, and implantation configurations | |
| EP2211982B1 (en) | An electroporation device for improved electrical field control | |
| EP0866672A2 (en) | Arrangement for electrothermal treatment of the human or animal body | |
| US20150094645A1 (en) | Apparatus for application of a pulsed radio frequency therapy in a vascular system or another cavity or tissue of the human or animal body | |
| US10668278B2 (en) | Expandable catheter devices electrode array | |
| CN112890948B (en) | Electric pulse ablation device capable of cooperatively administering medicine | |
| EP3501440A1 (en) | Bipolar electrode probe | |
| ES2442016T3 (en) | Power supply device comprising an electrode cartridge | |
| WO2021207385A1 (en) | Pulsed electric field waveform manipulation and use | |
| CN108742825B (en) | Device for minimally invasive compound treatment and multifunctional surgical needle set thereof | |
| CN220512903U (en) | Monopole ablation probe | |
| US9687606B2 (en) | Articulating applicators/injectors for administration of liquid anesthetic and other liquids | |
| BRPI0903829A2 (en) | devices and methods for carrying out radiofrequency microsclerosis optionally associated with chemosclerosis in the treatment of telangiectasias and small varicose veins | |
| CN116763420B (en) | Double-electrode ablation probe | |
| CN208823758U (en) | Myocardial ablation device | |
| CN103169510B (en) | For treating the chemical ablation device of atrial fibrillation | |
| US20110196299A1 (en) | Structure of needle for syringe | |
| CN220344479U (en) | Electrode needle for ablation of cardiomyopathy | |
| CN218833402U (en) | Radio frequency microneedle applied to full-depth acne treatment | |
| CN219184075U (en) | Radio frequency needle | |
| CN210185626U (en) | Electrical stimulation radio frequency sheath catheter for treating pain | |
| WO2023076767A1 (en) | Percutaneous treatment device and method | |
| CN116549091A (en) | Pulsed electric field ablation needle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |