CN116942301A - Tumor ablation needle for high-voltage steep pulse - Google Patents
Tumor ablation needle for high-voltage steep pulse Download PDFInfo
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- CN116942301A CN116942301A CN202310920480.2A CN202310920480A CN116942301A CN 116942301 A CN116942301 A CN 116942301A CN 202310920480 A CN202310920480 A CN 202310920480A CN 116942301 A CN116942301 A CN 116942301A
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00059—Material properties
- A61B2018/00071—Electrical conductivity
- A61B2018/00083—Electrical conductivity low, i.e. electrically insulating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
- A61B2018/00583—Coblation, i.e. ablation using a cold plasma
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1475—Electrodes retractable in or deployable from a housing
Abstract
The application discloses a tumor ablation needle for high-voltage steep pulse, which solves the problems that the existing tumor ablation needle has limited ablation range and cannot be suitable for ablation parts with different space sizes, and comprises the following steps: a tumor ablation section; an auxiliary heat insulation component sleeved on the tumor ablation part; the ablation handheld part comprises a handheld shell, a bearing seat and an ablation holding seat, wherein the bearing seat and the ablation holding seat are arranged on the handheld shell; the range adjusting component is arranged in the handheld shell and connected with the tumor ablation part and used for adjusting the ablation range of the tumor ablation part; the embodiment of the application is provided with the adjusting pushing part, the adjusting pushing part acts on the tumor ablation part to flexibly adjust the ablation range of the tumor ablation part, so that the problem of limited ablation range of the existing tumor ablation needle is solved, the ablation coverage range can be increased, and the ablation efficiency is improved.
Description
Technical Field
The application belongs to the technical field of medical appliances, and particularly relates to a tumor ablation needle for high-voltage steep pulse.
Background
Steep pulse electric field therapy, which is also called irreversible electroporation in medicine, is used for treating a patient by tumor ablation during treatment of tumors by high-voltage steep pulses, because steep pulse electric field therapy forms nanoscale permanent perforations on tumor cells by releasing high-voltage pulses, destroying intracellular balance and causing cells to die rapidly.
Chinese patent CN113952024a discloses a bipolar tumor ablation needle for high voltage steep pulse, comprising a positive electrode needle having a puncture head, a tail end connected with a nano pulse width high voltage positive electrode, an insulating layer outside the positive electrode needle and a front end exposed, the exposed part of the front end forming a positive electrode; positive electrode insulating layer: the surface of the positive electrode needle is coated, and the puncture head part and the tail part of the positive electrode needle are not coated with an insulating layer; negative electrode needle tube: the anode needle tube is sleeved on the anode insulating layer, the outer surface of the anode needle tube is provided with an insulating coating, and the most tail end part of the anode needle tube is provided with a section of exposed area without the insulating coating; the foremost part of the negative electrode needle tube is also provided with a section of bare area without insulating coating, and the section of bare area forms a negative electrode. However, the existing tumor ablation needle has limited ablation range, and cannot be suitable for ablation sites with different space sizes, and based on the ablation scope, we propose a tumor ablation needle for high-voltage steep pulse.
Disclosure of Invention
The application aims to provide a tumor ablation needle for high-voltage steep pulse aiming at the defects of the prior art, and solves the problems that the existing tumor ablation needle is limited in ablation range and cannot be suitable for ablation sites with different space sizes.
The existing tumor ablation needle is limited in ablation range, cannot be suitable for ablation sites with different space sizes, and based on the fact, the tumor ablation needle for high-voltage steep pulse is provided, and in short, the tumor ablation needle for high-voltage steep pulse comprises a tumor ablation part, an auxiliary heat insulation component sleeved on the tumor ablation part, an ablation handheld part and a range adjusting component arranged in the handheld shell, wherein the range adjusting component is connected with the tumor ablation part and used for adjusting the ablation range of the tumor ablation part, and the range adjusting component comprises an adjustment pushing part and an adjustment limiting part working in cooperation with the adjustment pushing part. During operation, the tumor ablation part can be pushed to a designated ablation area through operating the ablation holding seat, then the tumor ablation part is opened, the tumor ablation part can execute ablation operation, the adjustment pushing part is started according to the difference of the ablation areas, the adjustment pushing part drives the tumor ablation part to move, flexible adjustment of the ablation range is realized, and meanwhile, the adjustment limiting part performs limiting protection on the tumor ablation part. The embodiment of the application is provided with the adjusting pushing part, the adjusting pushing part acts on the tumor ablation part to flexibly adjust the ablation range of the tumor ablation part, so that the problem of limited ablation range of the existing tumor ablation needle is solved, the ablation coverage range can be increased, and the ablation efficiency is improved.
The application is realized in that the tumor ablation needle for high-voltage steep pulse comprises:
a tumor ablation section;
an auxiliary heat insulation component sleeved on the tumor ablation part;
the ablation handheld part comprises a handheld shell, a bearing seat and an ablation holding seat, wherein the bearing seat and the ablation holding seat are arranged on the handheld shell;
the range adjusting component is arranged in the handheld shell and connected with the tumor ablation part and used for adjusting the ablation range of the tumor ablation part;
wherein the range adjustment assembly comprises:
the adjusting pushing part is arranged in the handheld shell and is used for pushing and adjusting the position of the tumor ablation part;
the adjusting limiting part is matched with the adjusting pushing part, is arranged in the handheld shell, is connected with the tumor ablation part and is used for limiting protection of the tumor ablation part.
Preferably, the ablation handpiece further comprises:
the adjusting driving rod is arranged on one side of the bearing seat, and one side of the adjusting driving rod is rotationally connected with the handheld shell through the adjusting connecting shaft;
the adjusting push plate is fixedly arranged at the end part of the adjusting driving rod and used for driving the adjusting pushing part, and the adjusting guide cylinder is fixedly arranged on the handheld shell and communicated with the handheld shell in a penetrating way, and the adjusting guide cylinder is used for supporting the adjusting pushing part and limiting the adjusting pushing part.
Preferably, the adjustment pushing part includes:
the adjusting push rod is slidably arranged in the adjusting guide cylinder, and one end of the adjusting push rod penetrates through the side wall of the handheld shell and extends to one side of the adjusting push plate;
the adjusting guide cylinder is provided with an adjusting guide cylinder, one end of the adjusting guide cylinder is fixedly connected with an adjusting push rod, the other end of the adjusting guide cylinder is fixedly connected with a pushing hanging buckle, and the pushing hanging buckle is arranged in the adjusting guide cylinder in a sliding manner and is detachably connected with the tumor ablation part.
Preferably, the adjusting and limiting part includes:
the limiting slide rod is slidably arranged in the handheld shell;
the limiting spring is arranged on one side of the limiting slide rod and is fixedly embedded in the handheld shell;
and the adjusting linkage piece is fixedly connected with the limiting slide rod, the other end of the adjusting linkage piece is detachably connected with an adjusting limiting seat, and the adjusting limiting seat is connected with the tumor ablation part.
Preferably, the tumor ablation portion includes:
the ablation puncture needle is connected with the pushing hanging buckle at one end, and is electrically connected with the positive electrode joint;
the ablation sleeve group is sleeved on the ablation puncture needle and is used for matching with the ablation puncture needle to work so as to realize tumor ablation operation.
Preferably, the ablation cannula set comprises:
the puncture sleeve is sleeved on the ablation puncture needle and used for protecting the ablation puncture needle;
the auxiliary puncture electrodes are embedded in the puncture sleeve and work in a matched mode with the ablation puncture needles to perform ablation work.
Preferably, the tumor ablation portion further comprises:
the sleeve mounting seat is detachably connected with the adjusting limiting seat and used for supporting the puncture sleeve.
Preferably, the auxiliary heat insulation assembly includes:
an auxiliary heat insulation pipe sleeved on the puncture sleeve;
the heat insulation installation seat is used for supporting the auxiliary heat insulation pipe;
and the heat insulation moving part is arranged at the end part of the adjusting guide cylinder and is connected with the heat insulation installation seat and used for adjusting the positions of the auxiliary heat insulation pipe and the heat insulation installation seat.
Preferably, the auxiliary heat insulation assembly further comprises:
the auxiliary heat insulation cover is fixedly installed in the auxiliary heat insulation pipe, and an auxiliary heat insulation cavity is arranged in the auxiliary heat insulation cover.
Preferably, the heat insulating moving part includes:
moving the adjusting member;
the transmission screw is fixedly connected with the movable adjusting piece, and one end of the transmission screw is rotationally connected with the heat insulation movable seat;
the transmission sleeve is sleeved on the transmission screw rod, the transmission sleeve is fixedly connected with the adjusting guide cylinder, and the transmission sleeve is connected with the transmission screw rod through threads.
Compared with the prior art, the embodiment of the application has the following main beneficial effects:
the embodiment of the application is provided with the adjusting pushing part, the adjusting pushing part acts on the tumor ablation part to flexibly adjust the ablation range of the tumor ablation part, so that the problem of limited ablation range of the existing tumor ablation needle is solved, the ablation coverage range can be increased, and the ablation efficiency is improved.
The auxiliary heat insulation assembly is arranged in the embodiment of the application, the auxiliary heat insulation assembly can not only insulate and protect the non-ablation area to avoid damaging the body of a patient, but also can be in linkage fit with the adjusting pushing part, thereby facilitating the puncture of the tumor ablation part and carrying out auxiliary limit on the tumor ablation part, and compared with the prior art, the auxiliary heat insulation assembly has more obvious functions and effects.
The embodiment of the application is provided with the heat insulation moving part, and the heat insulation moving part is convenient for adjusting the position of the auxiliary heat insulation pipe, so that the exposed area of the tumor ablation part is convenient for flexible adjustment, the shape and the curvature of the tumor ablation part can be adjusted according to the ablation requirements of different areas of a patient, and the ablation efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of a tumor ablation needle for high-voltage steep pulse provided by the application.
Fig. 2 is an isometric view of the present application.
Fig. 3 is a front view of the present application.
Fig. 4 is a top view of the present application.
Fig. 5 is a cross-sectional view taken along A-A of fig. 4.
Fig. 6 is a schematic structural view of an ablation handpiece provided by the present application.
Fig. 7 is a schematic perspective view of an ablation handpiece according to the present application.
Fig. 8 is a schematic structural view of a tumor ablation portion provided by the present application.
Fig. 9 is a schematic structural view of an auxiliary heat insulation assembly provided by the application.
Fig. 10 is a front view of an auxiliary insulation assembly provided by the present application.
Fig. 11 is a side view of an auxiliary insulation assembly provided by the present application.
In the figure: 1-ablation handpieces, 11-handpieces, 12-bearing brackets, 13-ablation holding seats, 14-adjusting driving rods, 15-adjusting push plates, 16-adjusting guide cylinders, 17-adjusting connecting shafts, 2-adjusting pushing parts, 21-adjusting push rods, 22-adjusting springs, 23-pushing buckles, 3-adjusting limiting parts, 31-limiting sliding rods, 32-adjusting linkage pieces, 33-adjusting limiting seats, 34-limiting springs, 4-tumor ablation parts, 41-ablation sleeve groups, 411-puncture sleeves, 412-auxiliary puncture electrodes, 42-ablation puncture needles, 43-sleeve mounting seats, 44-positive electrode joints, 5-auxiliary heat insulation assemblies, 51-auxiliary heat insulation pipes, 52-auxiliary heat insulation covers, 521-auxiliary heat insulation cavities, 53-heat insulation moving parts, 531-moving adjusting pieces, 532-driving screws, 533-driving sleeve seats, 534-heat insulation moving seats and 54-heat insulation mounting seats.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The existing tumor ablation needle is limited in ablation range, cannot be suitable for ablation sites with different space sizes, and based on the fact, the tumor ablation needle for high-voltage steep pulse is provided, and in short, the tumor ablation needle for high-voltage steep pulse comprises a tumor ablation part 4, an auxiliary heat insulation component 5 sleeved on the tumor ablation part 4, an ablation handheld part 1 and a range adjusting component arranged in the handheld shell 11, wherein the range adjusting component is connected with the tumor ablation part 4 and used for adjusting the ablation range of the tumor ablation part 4, and the range adjusting component comprises an adjusting pushing part 2 and an adjusting limiting part 3 matched with the adjusting pushing part 2. During operation, the tumor ablation part 4 can be pushed to a designated ablation area by operating the ablation holding seat 13, then the tumor ablation part 4 is started, the tumor ablation part 4 can perform ablation operation, the adjustment pushing part 2 is started according to the difference of the ablation areas, the adjustment pushing part 2 drives the tumor ablation part 4 to move, flexible adjustment of the ablation range is realized, and meanwhile, the adjustment limiting part 3 performs limiting protection on the tumor ablation part 4. The embodiment of the application is provided with the adjusting pushing part 2, the adjusting pushing part 2 acts on the tumor ablation part 4 to flexibly adjust the ablation range of the tumor ablation part 4, so that the problem of limited ablation range of the existing tumor ablation needle is solved, the ablation coverage range can be increased, and the ablation efficiency is improved.
The embodiment of the application provides a tumor ablation needle for high-voltage steep pulse, as shown in fig. 1-5, which comprises the following components:
a tumor ablation unit 4;
an auxiliary heat insulation component 5 sleeved on the tumor ablation part 4;
the ablation handheld part 1 comprises a handheld shell 11, a bearing seat 12 arranged on the handheld shell 11 and an ablation holding seat 13;
and the range adjusting assembly is arranged in the handheld shell 11, is connected with the tumor ablation part 4 and is used for adjusting the ablation range of the tumor ablation part 4.
It should be noted that, the hand-held housing 11 may be made of a high temperature resistant titanium alloy material, and the interior of the hand-held housing 11 is hollow, the hand-held housing 11 is fixedly connected with the support base 12 through a fastening bolt, and the ablation holding base 13 is fixedly mounted on the support base 12 by joggle or welding.
Wherein, as shown in fig. 1 and 5, the range adjustment assembly includes:
an adjusting pushing part 2, wherein the adjusting pushing part 2 is arranged in the handheld shell 11, and the adjusting pushing part 2 is used for pushing and adjusting the position of the tumor ablation part 4;
the adjusting and limiting part 3 is matched with the adjusting and pushing part 2, the adjusting and limiting part 3 is arranged in the handheld shell 11, and the adjusting and limiting part 3 is connected with the tumor ablation part 4 and used for limiting and protecting the tumor ablation part 4.
In this embodiment, during operation, by operating the ablation gripping seat 13, the tumor ablation portion 4 can be pushed to a designated ablation area, then the tumor ablation portion 4 is opened, the tumor ablation portion 4 can perform ablation operation, according to the difference of the ablation areas, the adjustment pushing portion 2 is started, the adjustment pushing portion 2 drives the tumor ablation portion 4 to move, flexible adjustment of the ablation range is achieved, and meanwhile, the adjustment limiting portion 3 performs limiting protection on the tumor ablation portion 4.
The embodiment of the application is provided with the adjusting pushing part 2, the adjusting pushing part 2 acts on the tumor ablation part 4 to flexibly adjust the ablation range of the tumor ablation part 4, so that the problem of limited ablation range of the existing tumor ablation needle is solved, the ablation coverage range can be increased, and the ablation efficiency is improved.
In a further preferred embodiment of the present application, as shown in fig. 6 to 7, the ablation handpiece 1 further comprises:
the adjusting driving rod 14 is arranged on one side of the bearing seat 12, and one side of the adjusting driving rod 14 is rotationally connected with the handheld shell 11 through an adjusting connecting shaft 17;
the adjusting push plate 15, the adjusting push plate 15 is fixedly installed at the end part of the adjusting driving rod 14, the adjusting push plate 15 is used for driving the adjusting pushing part 2, and the adjusting guide cylinder 16, the adjusting guide cylinder 16 is fixedly installed on the handheld shell 11, the adjusting guide cylinder 16 is communicated with the handheld shell 11 in a penetrating way, and the adjusting guide cylinder 16 is used for supporting the adjusting pushing part 2 and limiting the adjusting pushing part 2.
In this embodiment, one side of the adjusting driving rod 14 is fixedly connected with the adjusting connecting shaft 17 through a fastening bolt or a welding manner, one end of the adjusting connecting shaft 17 away from the adjusting driving rod 14 can be rotationally connected with the side wall of the handheld shell 11 through a ball bearing, the side wall of the adjusting driving rod 14 can be provided with a plurality of groups of anti-slip grooves or anti-slip pads for being convenient for medical staff to hold, the top of the adjusting push plate 15 and the top of the adjusting driving rod 14 are fixedly connected through joggles or a welding manner, the adjusting guide cylinder 16 can be an internal hollow cylinder, and the setting of the adjusting guide cylinder 16 can limit the adjusting pushing part 2 and also can support the auxiliary heat insulation component 5 and the tumor ablation part 4.
In a further preferred embodiment of the present application, as shown in fig. 1 to 6, the adjustment pushing part 2 includes:
an adjusting push rod 21, wherein the adjusting push rod 21 is slidably mounted in the adjusting guide cylinder 16, and one end of the adjusting push rod 21 penetrates through the side wall of the handheld shell 11 and extends to one side of the adjusting push plate 15;
the adjusting spring 22 is arranged in the adjusting guide cylinder 16, one end of the adjusting spring 22 is fixedly connected with the adjusting push rod 21, the other end of the adjusting spring 22 is fixedly connected with the pushing hanging buckle 23, and the pushing hanging buckle 23 is arranged in the adjusting guide cylinder 16 in a sliding manner and is detachably connected with the tumor ablation part 4.
In this embodiment, the adjusting push rod 21 may be a round rod with a polished surface, and one side of the adjusting push rod 21, which is close to the adjusting push plate 15, may be provided with an extruding block or an extruding seat, one end of the adjusting spring 22 is fixedly connected with the adjusting push rod 21, and the other end of the adjusting spring 22 is riveted or welded with the pushing hanging buckle 23, and the setting of the adjusting spring 22 achieves damping protection on the tumor ablation portion 4, so that the phenomenon that the tumor ablation portion 4 is broken or bent excessively is avoided.
During the ablation operation, medical staff can hold the adjusting driving rod 14, the adjusting driving rod 14 pushes the adjusting push plate 15 to move, the adjusting push plate 15 extrudes the adjusting push rod 21 and the adjusting spring 22 to move, the adjusting spring 22 extrudes the pushing hanging buckle 23 to move along the adjusting guide cylinder 16, and the pushing hanging buckle 23 drives the tumor ablation part 4 to move, so that the adjustment of the position and the ablation area of the tumor ablation part 4 is facilitated.
In a further preferred embodiment of the present application, as shown in fig. 1 and 7, the adjusting and limiting part 3 includes:
the limiting slide rod 31 is slidably arranged in the handheld shell 11;
the limiting spring 34 is arranged on one side of the limiting slide rod 31, and the limiting spring 34 is fixedly embedded in the handheld shell 11;
and the adjusting linkage piece 32 is fixedly connected with the limiting slide rod 31, the other end of the adjusting linkage piece 32 is detachably connected with the adjusting limiting seat 33, and the adjusting limiting seat 33 is connected with the tumor ablation part 4.
In this embodiment, the limiting slide rod 31 may be a round rod or a rectangular rod with a polished surface, and the setting of the limiting spring 34 achieves shock absorption protection on the tumor ablation portion 4, so as to cooperate with the adjusting spring 22 to avoid damage to the tumor ablation portion 4, while the adjusting linkage 32 may be a hard alloy rod or an alloy tube, one end of the adjusting linkage 32 is fixedly connected with the limiting slide rod 31 through a fastening bolt or a welding manner, and the other end of the adjusting linkage 32 is fixedly connected with the adjusting limiting seat 33 through a buckle.
In a further preferred embodiment of the present application, as shown in fig. 8 to 9, the tumor ablation portion 4 includes:
an ablation puncture needle 42, wherein one end of the ablation puncture needle 42 is connected with the pushing hanging buckle 23, and the ablation puncture needle 42 is electrically connected with a positive electrode joint 44;
the ablation sleeve group 41 is sleeved on the ablation puncture needle 42, and the ablation sleeve group 41 is used for matching with the ablation puncture needle 42 to work so as to realize tumor ablation operation.
The sleeve mounting seat 43, the sleeve mounting seat 43 is detachably connected with the adjusting limiting seat 33, and the sleeve mounting seat 43 is used for supporting the puncture sleeve 411.
It should be noted that, the ablation puncture needle 42 may be an ablation electrode tungsten needle, and the material of the ablation puncture needle 42 may be pure tungsten, cerium tungsten, lanthanum tungsten, or tungsten steel, and meanwhile, the ablation puncture needle 42 may be bent into a "U" shape, a "V" shape, or an "O" shape, the ablation puncture needle 42 is electrically connected to the positive electrode connector 44, and the positive electrode connector 44 is detachably mounted on the sleeve mounting seat 43, so that, for facilitating the release of the high-voltage steep pulse, the ablation puncture needle 42 may have multiple segments exposed outside, thereby facilitating the ablation of the tumor area, and meanwhile, in the embodiment, the handheld housing 11 may be correspondingly provided with a negative electrode connector, which is electrically connected to the auxiliary puncture electrode 412 through an insulation wire.
The sleeve mounting seat 43 is detachably connected with the puncture sleeve 411 through a buckle or a fastening bolt, and meanwhile, the sleeve mounting seat 43 and the adjusting and limiting seat 33 can be detachably connected through a buckle.
In this embodiment, the ablation cannula set 41 includes:
a puncture cannula 411, wherein the puncture cannula 411 is sleeved on the ablation puncture needle 42, and the puncture cannula 411 is used for protecting the ablation puncture needle 42;
at least one group of auxiliary puncture electrodes 412, wherein the auxiliary puncture electrodes 412 are embedded in the puncture cannula 411, and the auxiliary puncture electrodes 412 work together with the ablation puncture needle 42 for performing the ablation work.
It should be noted that, the auxiliary piercing electrodes 412 are circumferentially and uniformly distributed on the inner wall of the piercing cannula 411, the auxiliary piercing electrodes 412 may be tungsten wires, the materials thereof may be cerium tungsten, lanthanum tungsten, and tungsten steel, the auxiliary piercing electrodes 412 are electrically connected with the negative electrode connectors, the number of the auxiliary piercing electrodes 412 may be one, two, three, four, or six groups, and the auxiliary piercing electrodes 412 and the ablation piercing needles 42 cooperate to form a bipolar ablation system, so that rapid and safe ablation operations can be performed on different areas, while in the embodiment, the positive electrode connectors 44 and the negative electrode connectors are respectively connected with a host pulse voltage, the pulse voltage of the host pulse voltage may be ±800-1200V, and the tumor ablation range may be 5-40mm along with the change of the position and shape of the ablation piercing needles 42.
In this embodiment, the puncture cannula 411 may be a high temperature resistant transparent silica gel elbow or PVC elbow, and the arrangement of the puncture cannula 411 protects the ablation puncture needle 42 and supports the auxiliary puncture electrode 412.
In a further preferred embodiment of the present application, as shown in fig. 9 to 11, the auxiliary heat insulation assembly 5 comprises:
an auxiliary heat insulating pipe 51 sleeved on the puncture cannula 411;
a heat insulation mounting seat 54 for supporting the auxiliary heat insulation pipe 51;
and a heat insulation moving part 53, wherein the heat insulation moving part 53 is installed at the end part of the adjusting guide cylinder 16, and the heat insulation moving part 53 is connected with a heat insulation installation seat 54 for adjusting the positions of the auxiliary heat insulation pipe 51 and the heat insulation installation seat 54.
At least one group of auxiliary heat insulation covers 52, wherein the auxiliary heat insulation covers 52 are fixedly installed in the auxiliary heat insulation pipes 51, and auxiliary heat insulation cavities 521 are arranged in the auxiliary heat insulation covers 52.
The auxiliary heat insulation assembly 5 is arranged in the embodiment of the application, the auxiliary heat insulation assembly 5 not only can insulate and protect a non-ablation area to avoid damaging the body of a patient, but also can be in linkage fit with the adjusting pushing part 2, so that the puncture of the tumor ablation part 4 and the auxiliary limit of the tumor ablation part 4 are facilitated, and compared with the prior art, the auxiliary heat insulation assembly 5 has more obvious functions and effects.
In this embodiment, the auxiliary heat insulation pipe 51 may be made of glass fiber, silicate or rock wool, the outer wall of the auxiliary heat insulation pipe 51 is polished, the auxiliary heat insulation pipe 51 is fixed on the heat insulation mounting seat 54 by hot melt adhesive or riveting, the number of the auxiliary heat insulation covers 52 may be two, three or four, the auxiliary heat insulation covers 52 further ensure the function of the auxiliary heat insulation pipe 51, not only can play a role of heat insulation, but also can guide and limit the melting puncture needle 42 and the puncture sleeve 411, the auxiliary heat insulation cover 52 may be a "U" type pipe or an "O" type pipe structure, the auxiliary heat insulation cover 52 may be made of an insulating heat insulation material, thereby ensuring heat insulation performance, and the auxiliary heat insulation cavity 521 may be filled with heat insulation polyurethane particles or polystyrene foam, thereby further strengthening heat insulation protection effect.
The heat insulation moving part 53 is arranged in the embodiment of the application, the position of the auxiliary heat insulation pipe 51 is conveniently adjusted by the heat insulation moving part 53, and the exposed area of the tumor ablation part 4 is conveniently and flexibly adjusted, so that the shape and the curvature of the tumor ablation part 4 can be adjusted according to the ablation requirements of different areas of a patient, and the ablation efficiency is improved.
In a further preferred embodiment of the present application, as shown in fig. 9, the heat insulation moving part 53 includes:
moving the regulating member 531;
a driving screw 532 fixedly connected with the movement adjusting member 531, wherein one end of the driving screw 532 is rotatably connected with the heat insulation movement seat 534;
the transmission sleeve seat 533 is sleeved on the transmission screw 532, the transmission sleeve seat 533 is fixedly connected with the adjusting guide cylinder 16, and the transmission sleeve seat 533 is connected with the transmission screw 532 through threads.
In this embodiment, the moving adjusting member 531 may be a nut or a rotating wheel, the outer wall of which is provided with an external thread or an anti-slip groove, the moving adjusting member 531 may be fixedly connected with the driving screw 532 through a joggle joint or a buckle, one end of the heat insulation moving seat 534 and one end of the driving screw 532 are rotatably connected through a ball bearing, the heat insulation moving seat 534 is fixedly installed on the heat insulation installation seat 54 through a welding or fastening bolt, when the position of the auxiliary heat insulation pipe 51 needs to be adjusted during operation, the moving adjusting member 531 is rotated, and the moving adjusting member 531 drives the driving screw 532 to rotate, so that the driving screw 532 moves relative to the driving sleeve setting seat 533, and the position adjustment of the auxiliary heat insulation pipe 51 is realized.
In summary, the present application provides a tumor ablation needle for high-voltage steep pulse, when in operation, the tumor ablation portion 4 can be pushed to a designated ablation area by operating the ablation holding seat 13, then the tumor ablation portion 4 is opened, the tumor ablation portion 4 can perform an ablation operation, the adjustment pushing portion 2 is started according to the difference of the ablation areas, the adjustment pushing portion 2 drives the tumor ablation portion 4 to move, flexible adjustment of the ablation range is achieved, and meanwhile, the adjustment limiting portion 3 performs limit protection on the tumor ablation portion 4.
The embodiment of the application is provided with the adjusting pushing part 2, the adjusting pushing part 2 acts on the tumor ablation part 4 to flexibly adjust the ablation range of the tumor ablation part 4, so that the problem of limited ablation range of the existing tumor ablation needle is solved, the ablation coverage range can be increased, and the ablation efficiency is improved.
It should be noted that, for simplicity of description, the foregoing embodiments are all illustrated as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the order of acts, as some steps may be performed in other order or concurrently in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present application.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the scope of the present application. It will be apparent that the described embodiments are merely some, but not all, embodiments of the application. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present application or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present application, which also falls within the scope of the present application.
Claims (10)
1. A tumor ablation needle for high voltage steep pulse, the tumor ablation needle for high voltage steep pulse comprising:
characterized by a tumor ablation part (4);
an auxiliary heat insulation component (5) sleeved on the tumor ablation part (4);
the ablation handheld part (1), wherein the ablation handheld part (1) comprises a handheld shell (11), a bearing seat (12) arranged on the handheld shell (11) and an ablation holding seat (13);
the range adjusting assembly is arranged in the handheld shell (11), is connected with the tumor ablation part (4) and is used for adjusting the ablation range of the tumor ablation part (4);
wherein the range adjustment assembly comprises:
the adjusting pushing part (2) is arranged in the handheld shell (11), and the adjusting pushing part (2) is used for pushing and adjusting the position of the tumor ablation part (4);
and the adjusting limiting part (3) is matched with the adjusting pushing part (2), the adjusting limiting part (3) is arranged in the handheld shell (11), and the adjusting limiting part (3) is connected with the tumor ablation part (4) and used for limiting protection of the tumor ablation part (4).
2. The tumor ablation needle for high voltage steep pulse according to claim 1, wherein: the ablation handpiece (1) further comprises:
the adjusting driving rod (14), the adjusting driving rod (14) is arranged on one side of the bearing seat (12), and one side of the adjusting driving rod (14) is rotationally connected with the handheld shell (11) through the adjusting connecting shaft (17);
an adjusting push plate (15), wherein the adjusting push plate (15) is fixedly arranged at the end part of the adjusting driving rod (14), the adjusting push plate (15) is used for driving the adjusting pushing part (2), and
the adjusting guide cylinder (16), the adjusting guide cylinder (16) is fixedly arranged on the handheld shell (11), the adjusting guide cylinder (16) is communicated with the handheld shell (11) in a penetrating mode, and the adjusting guide cylinder (16) is used for supporting the adjusting pushing part (2) and limiting the adjusting pushing part (2).
3. The tumor ablation needle for high voltage steep pulse according to claim 2, wherein: the adjustment pushing portion (2) includes:
the adjusting push rod (21) is slidably arranged in the adjusting guide cylinder (16), and one end of the adjusting push rod (21) penetrates through the side wall of the handheld shell (11) and extends to one side of the adjusting push plate (15);
the device comprises an adjusting guide cylinder (16), an adjusting spring (22) arranged in the adjusting guide cylinder (16), one end of the adjusting spring (22) is fixedly connected with an adjusting push rod (21), the other end of the adjusting spring (22) is fixedly connected with a pushing hanging buckle (23), and the pushing hanging buckle (23) is slidably arranged in the adjusting guide cylinder (16) and is detachably connected with a tumor ablation part (4).
4. A tumor ablation needle for high voltage steep pulse according to claim 3, wherein: the adjusting and limiting part (3) comprises:
the limiting slide rod (31) is slidably arranged in the handheld shell (11);
the limiting spring (34) is arranged on one side of the limiting slide rod (31), and the limiting spring (34) is fixedly embedded in the handheld shell (11);
and the adjusting linkage piece (32) is fixedly connected with the limiting slide rod (31), the other end of the adjusting linkage piece (32) is detachably connected with the adjusting limiting seat (33), and the adjusting limiting seat (33) is connected with the tumor ablation part (4).
5. A tumor ablation needle for high voltage steep pulse according to any of claims 2-4, wherein: the tumor ablation section (4) comprises:
an ablation puncture needle (42), wherein one end of the ablation puncture needle (42) is connected with the pushing hanging buckle (23), and the ablation puncture needle (42) is electrically connected with a positive electrode joint (44);
and the ablation sleeve group (41) is sleeved on the ablation puncture needle (42), and the ablation sleeve group (41) is used for matching with the ablation puncture needle (42) to work so as to realize tumor ablation operation.
6. The tumor ablation needle for high voltage steep pulse according to claim 5, wherein: the ablation cannula set (41) comprises:
the puncture sleeve (411) is sleeved on the ablation puncture needle (42), and the puncture sleeve (411) is used for protecting the ablation puncture needle (42);
and the auxiliary puncture electrodes (412) are embedded in the puncture sleeve (411), and the auxiliary puncture electrodes (412) are matched with the ablation puncture needles (42) for executing the ablation.
7. The tumor ablation needle for high voltage steep pulse according to claim 6, wherein: the tumor ablation portion (4) further includes:
the puncture device comprises a sleeve mounting seat (43), wherein the sleeve mounting seat (43) is detachably connected with an adjusting limiting seat (33), and the sleeve mounting seat (43) is used for supporting a puncture sleeve (411).
8. The tumor ablation needle for high voltage steep pulse according to claim 6, wherein: the auxiliary heat insulation assembly (5) comprises:
an auxiliary heat insulation pipe (51) sleeved on the puncture sleeve (411);
a heat insulation mounting seat (54) for supporting the auxiliary heat insulation pipe (51);
and the heat insulation moving part (53), wherein the heat insulation moving part (53) is arranged at the end part of the adjusting guide cylinder (16), and the heat insulation moving part (53) is connected with the heat insulation installation seat (54) and is used for adjusting the positions of the auxiliary heat insulation pipe (51) and the heat insulation installation seat (54).
9. The tumor ablation needle for high voltage steep pulse according to claim 8, wherein: the auxiliary heat insulation assembly (5) further comprises:
at least one group of auxiliary heat insulation covers (52), wherein the auxiliary heat insulation covers (52) are fixedly arranged in the auxiliary heat insulation pipes (51), and auxiliary heat insulation cavities (521) are arranged in the auxiliary heat insulation covers (52).
10. The tumor ablation needle for high voltage steep pulse according to claim 8, wherein: the heat-insulating moving part (53) comprises:
a movement adjuster (531);
a transmission screw (532) fixedly connected with the movement adjusting piece (531), wherein one end of the transmission screw (532) is rotationally connected with the heat insulation movement seat (534);
the transmission sleeve is sleeved on the transmission screw (532) and is provided with a seat (533), the transmission sleeve is fixedly connected with the adjusting guide cylinder (16), and the transmission sleeve is provided with the seat (533) and the transmission screw (532) through threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310920480.2A CN116942301A (en) | 2023-07-26 | 2023-07-26 | Tumor ablation needle for high-voltage steep pulse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310920480.2A CN116942301A (en) | 2023-07-26 | 2023-07-26 | Tumor ablation needle for high-voltage steep pulse |
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| CN116942301A true CN116942301A (en) | 2023-10-27 |
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| CN202310920480.2A Pending CN116942301A (en) | 2023-07-26 | 2023-07-26 | Tumor ablation needle for high-voltage steep pulse |
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| CN113729920A (en) * | 2021-09-28 | 2021-12-03 | 深圳迈微医疗科技有限公司 | Bimodal tissue ablation needle |
| CN116250910A (en) * | 2023-02-03 | 2023-06-13 | 山东大学 | Accurate determination device for ablation area |
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| US20020058932A1 (en) * | 1999-06-17 | 2002-05-16 | Vivant Medical, Inc. | Modular biopsy and microwave ablation needle delivery apparatus adapted to in situ assembly and method of use |
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