WO2018126373A1 - 一种电刀切割部的导通结构 - Google Patents

一种电刀切割部的导通结构 Download PDF

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Publication number
WO2018126373A1
WO2018126373A1 PCT/CN2017/070220 CN2017070220W WO2018126373A1 WO 2018126373 A1 WO2018126373 A1 WO 2018126373A1 CN 2017070220 W CN2017070220 W CN 2017070220W WO 2018126373 A1 WO2018126373 A1 WO 2018126373A1
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WO
WIPO (PCT)
Prior art keywords
electric knife
conductive
base
cutting portion
knife cutting
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PCT/CN2017/070220
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English (en)
French (fr)
Inventor
黄海军
王清华
尹艳辉
刘天国
晁宇
Original Assignee
浙江迈德实达医疗科技有限公司
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Application filed by 浙江迈德实达医疗科技有限公司 filed Critical 浙江迈德实达医疗科技有限公司
Priority to PCT/CN2017/070220 priority Critical patent/WO2018126373A1/zh
Publication of WO2018126373A1 publication Critical patent/WO2018126373A1/zh

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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

Definitions

  • the utility model belongs to the technical field of surgical electrosurgical manufacturing, in particular to a conduction structure of an electric knife cutting part.
  • the electrosurgical cutting part of the current electrosurgical knife is directly engaged with the front end of the smoking pipe, and the electric conduction is a metal pipe which is integrated with the inside of the smoking pipe, and then the electric arc cutting portion is electrically connected by contact with the metal pipe.
  • the electric knife cutting portion of the electric knife is directly engaged in the smoking tube, and the smoking tube and the electric knife cutting portion are only engaged by one connecting portion, and the strength of the engaging structure is not large, and the electric knife cutting is performed during the cutting operation.
  • the part is prone to deviation, and the electric knife cutting part is loose with the smoking pipe, and the wire performance is not very good.
  • a high frequency surgical electric pen with a handle body, a cutter head, a connecting wire and a control component mounted on the handle body, the control component is electrically connected to the connecting wire and the cutter head, as disclosed in the prior art, as disclosed in CN201510349U
  • the cutter head is connected to the handle body by a telescopic mechanism. Since the cutter head on the HF electrosurgical pencil is disposed on the handle body through the telescopic mechanism, during the operation, the extension length of the cutter head can be adjusted by the telescopic mechanism, thereby facilitating the operation.
  • the smoking pipe and the electric knife cutting portion mentioned by the above applicant are only engaged by one connecting portion, and the strength of the engaging structure is not large, and the cutting portion of the electric knife is prone to deviation during the cutting operation.
  • the telescopic mechanism and the handle body may loosen, resulting in poor contact.
  • the purpose of the utility model is to provide a large supporting force for the cutting portion of the electric knife and to ensure a good electrical conduction effect.
  • a conductive structure of an electric knife cutting portion comprising an electric knife cutting portion body, a conductive connecting portion and a conducting base, the electric knife cutting portion body Partially covered by the conductive connection portion and connected to the conductive connection portion, the axial length of the electric knife cutting portion body is adjustable; the conductive connection portion and the conductive base portion Connecting and covering a part of the electrosurgical cutting part body; the electrosurgical cutting part body is inserted on the conduction base.
  • the adjustable length of the shaft means that the body of the electric knife cutting part is a relatively independent combination of various parts, but the applicant has built different models at the time of manufacture to meet the needs of different cutting, the most important of which The change is the change in its axial length, and then the cutter head is a variety of shapes made for different surgical actions.
  • the electric knife cutting portion body comprises a long type electric knife
  • the long type electric knife comprises an electric knife body and the electric knife body is engaged
  • the electric knife body comprises an electric knife cutting portion and An electric knife conductive portion that is rotatably connected to the electric knife cutting portion
  • the electric knife protective cover includes a first electric knife fixed end that engages the electric knife cutting portion, and a first portion that engages the electric knife conductive portion a second electric knife fixed end and a sleeve connecting the first electric knife fixed end and the second electric knife fixed end.
  • the electrosurgical cutting portion body is directed to the operation of extending into the inside of the epidermal tissue, so the required length is naturally long. In the middle of the surgery, the smoke generated by cutting the human tissue needs to be absorbed and discharged to the outside, which is taken and transmitted through the cannula.
  • the electric knife cutting portion body comprises a short type electric knife
  • the short type electric knife comprises an electric knife base body, a protective layer disposed on a surface of the electric knife base body and an electric knife sleeved on the protective layer Auxiliary snaps.
  • the electrosurgical cutting part body is a cutting operation for epidermal tissue, and the epidermis tissue is relatively thin, and the epidermal tissue is not required to have a long axial length, but a strong stability is required.
  • said conductive connection comprises a conductive outer casing threadedly coupled to said conductive base and an auxiliary limiting structure disposed at said conductive connection and said conductive base.
  • the conducting case has a trumpet shape, and the open end is connected to the conductive base, and the small end is outside the body of the electric knife cutting part, and the sleeve of the long type electric knife is tightly covered, and the electric knife base of the short type electric knife is covered. .
  • the conductive base comprises a base housing, an opening and closing switch embedded on the base housing, a control circuit board embedded in the base housing, and a control circuit board disposed in the base housing Connected conductive base.
  • the open/close switch is embedded in the housing and can be pressed and reset.
  • the conductive base comprises a conductive portion, a limiting passage disposed on an outer surface of the conductive portion, a sealing member disposed on an outer surface of the limiting passage, the conductive portion and the control circuit
  • the plate is in close contact and snap-fit connection, and a limiting channel covered by the seal is engaged in the base housing.
  • the limit channel accommodates a portion of the conductive portion that is not in contact with the control circuit board.
  • the seal setting limit channel externally covers the entire limit channel and is not limited to covering the limit channel.
  • said base housing includes a main passage and an auxiliary passage, said auxiliary passage including a card slot for receiving said control circuit board, and a fixed passage disposed at an end of said card slot.
  • the main passage is a smoking pipe; the auxiliary passage is sealed from the main passage to prevent the generated smoke from entering the auxiliary passage.
  • the conductive portion includes an engaging passage and an engaging piece, and the engaging passage is provided with an axial slit, and the engaging piece is provided with a rib and a limiting slot formed on the control circuit board.
  • the seal extends rearwardly over the control circuit board and an auxiliary component that is coupled to the control circuit board.
  • the diameter of the engagement channel can be changed to meet the plugging of different types of electric knife cutting parts.
  • the conductive portion is then fixed to prevent it from moving in the axial direction.
  • the seal also seals the control circuit board and covers the wires that connect the control board until the wires leave the base housing.
  • the utility model realizes convenient replacement of the body of the electric knife cutting part.
  • Long type electrosurgical cutter head distance The distance between the parts is large, and the structure of the present application can increase the maneuverability of the cutter head, that is, the first electric knife fixed end and the second electric knife fixed end respectively disposed at two ends of the electric knife protection cover are used to fix the electric knife body.
  • the overall structural strength of the electric knife cutting portion body is strengthened, and the electrosurgical cutting portion of the electrosurgical cutting portion is connected to the electrosurgical cutting portion, wherein the electric knife cutting portion is provided with a convex thread surface, and the electric knife guiding portion is provided with a depression.
  • the threaded surface, the two cooperate with each other, the fixed connection of the thread surface is convenient to operate, and an approximate whole body can be formed in the axial direction.
  • the short type electric knife has strong structural strength and good stability.
  • the conductive shell ensures that the smoke generated by the cutting head enters the inside of the electric knife to ensure the clean environment of the operation.
  • the conductive base is configured to better engage the conductive portion in the base housing such that the auxiliary passage can be isolated from the main passage.
  • the plastic sealing member is for strengthening the tight connection between the conductive portion and the control circuit board, and is also for preventing corrosive liquid from entering the control circuit board from corroding the metal wire in the control circuit board, and preventing oxidation of the control circuit board.
  • Embodiment 1 is a schematic overall view of Embodiment 1 of the present invention.
  • Figure 2 is a side cross-sectional view of the first embodiment of the present invention.
  • FIG. 3 is a schematic view of a long type electric knife according to Embodiment 1 of the present invention.
  • Figure 4 is a partial schematic view of the conductive base of the present invention.
  • Figure 5 is a side view of the base housing of the present invention.
  • Figure 6 is a schematic overall view of the second embodiment of the present invention.
  • Figure 7 is an overall cross-sectional view of a second embodiment of the present invention.
  • Figure 8 is a side cross-sectional view of the second embodiment of the present invention.
  • the conduction structure of the electric knife cutting portion shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4 and FIG. 5 includes an electric knife cutting portion body 1, a conduction connecting portion 2, and a conduction base portion 3.
  • the electric knife cutting part body 1 is a long type electric knife 11
  • the long type electric knife 11 includes an electric knife body 110 and an electric knife protection cover 111 that engages the electric knife body 110
  • the electric knife body 110 includes an electric knife cutting part 1101 and electricity Knife cutting portion 1101 is rotatably connected
  • the electric knife protection cover 111 includes the first electric knife fixed end 1111 of the electric knife cutting part 1101, the second electric knife fixed end 1112 of the electric knife conduction part 1102, and the connection first
  • the electric knife fixed end 1111 and the second electric knife fixed end 1112 are sleeved 1113.
  • the rotary connection refers to a threaded connection.
  • the structural strength of the threaded connection is large, and the operation is relatively stable.
  • the electric knife cutting portion 1101 is provided with a convex thread surface, and the electric knife conduction portion 1102 is provided with a concave thread surface. Engage each other. Such a threaded connection ensures that the electric knife cutting portion 1101 has a sufficient space for smoking while providing a stable connection.
  • the conductive connection portion 2 includes a conductive outer casing 21 screwed onto the conductive base portion 3 and an auxiliary limiting structure 22 at which the conductive connection portion 2 and the conductive base portion 3 are disposed.
  • the conductive outer casing 21 has a trumpet shape, and one end of the opening is connected to the conductive base, and the end with the small opening is outside the electric knife cutting part body 1.
  • the sleeve 1113 of the long electric knife is tightly covered and closely fitted, and the sleeve 1113 is tightly fitted. After being closely adhered to the conductive outer casing 21, the two will be sealed, and the cut smoke will enter the electric knife body 110, and the close fitting will form an approximate whole with the conductive base 3, facilitating the manipulation of the entire electric knife. And stress.
  • the base portion 3 includes a base housing 31, an opening and closing switch 32 embedded in the base housing 31, a control circuit board 33 embedded in the base housing 31, and a conductive base disposed in the base housing 31 and connected to the control circuit board 33.
  • the conductive base 341 includes a conductive portion 341, a limiting passage 342 disposed on the outer surface of the conductive portion 341, and a sealing member 343 disposed on the outer surface of the limiting passage 342.
  • the conductive portion 341 is in close contact with the control circuit board 33.
  • the connecting passage 342 covered by the sealing member 343 is engaged in the base housing 31.
  • the surface of the limiting channel 342 is provided with a protrusion
  • the base housing 31 is provided with a card slot for engaging the protrusion.
  • the base housing 31 includes a main passage 311 and an auxiliary passage 312.
  • the auxiliary passage 312 includes a card slot 3121 that houses the control circuit board 33, and a fixed passage 3122 that is disposed at the end of the card slot 3121.
  • the base casing 31 is formed by engaging the left side portion and the right side portion of the casting.
  • the conductive portion 341 includes an engaging passage 3411 and an engaging piece 3412.
  • the engaging passage 3411 is provided with an axial slit.
  • the engaging piece 3412 is provided with a rib and a limiting slot formed on the control circuit board 33.
  • the sealing member 343 disposed on the limiting passage 342 extends rearwardly to extend to the control circuit board 33, and the control circuit board 33 is sealed in all directions, and then can be further extended to be connected to the control circuit board 33.
  • the wire is also hermetically covered so that the components in the auxiliary channel 312 are sealed by the seal 343.
  • the engaging piece 3412 and the control circuit board 33 are mutually placed and then inserted laterally into the left side or the right side of the card slot 3121, and then the left side portion and the right side portion are snapped together, thus ensuring The control circuit board 33 is fixed in the axial direction.
  • the electric knife cutting portion body 1 is partially covered by the conductive connection portion 2 and connected to the conductive connection portion 3 and the conductive base portion 3, and the conductive connection portion 2 is connected to the conductive base portion 3 and covers a part of the electric knife cutting portion body 1;
  • the cutter cutting body 1 is inserted into the conductive base 3, and most importantly, the second electric knife fixed end 1112 is inserted into the conductive base 34, so that the electric knife cutting body 1 can be directly pulled out by hand and Insert to replace.
  • the electric knife cutting portion 1101 when the electric knife cutting portion 1101 needs to be replaced, it is only necessary to extend the electric knife cutting portion 1101 from the first electric knife fixed end 1111 and then rotatably connect with the electrosurgical blade conducting portion 1102.
  • the different electrosurgical cutting portion 1101 when the different electrosurgical cutting portion 1101 is replaced, only the original electrosurgical cutting portion 1101 needs to be separated from the electrosurgical cutting portion 1102 by rotation, and then the new electrosurgical cutting portion 1101 is again inserted from the first electrosurgical fixed end 1111. Then, it is rotatably connected to the electrosurgical conductive portion 1102.
  • the electric knife cutting part body 1 includes a short type electric knife 12
  • the short type electric knife 12 includes an electric knife base body 121, which is disposed on the electric knife.
  • the electric knife base 121 passes through the conductive connection portion 2 and its tail portion is directly engaged in the engagement passage 3411 included in the conduction base 34.

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Abstract

一种手术电刀切割部的导通结构，包括电刀切割部本体（1）、导通连接部（2）和导通基部（3），电刀切割部本体（1）部分被导通连接部（2）覆盖且跟导通连接部（2）与导通基部（3）连接，电刀切割部本体（1）的轴长可调节；导通连接部（2）与导通基部（3）连接且覆盖部分电刀切割部本体（1）；电刀切割部本体（1）插接在导通基部（3）上。导通结构给电刀切割部提供较大支撑力，且保证导电效果良好。

Description

一种电刀切割部的导通结构 技术领域
本实用新型属于手术电刀制造技术领域，特别是一种电刀切割部的导通结构。
背景技术
目前的手术电刀的电刀切割部都是直接卡合在吸烟管前端，导电是通过吸烟管内设置与其成为一体的金属管道，然后通过与金属管道的接触来实现电刀切割部的导电。这种电刀的电刀切割部直接卡合在吸烟管中，吸烟管与电刀切割部只通过一个连接部卡合，这种卡合结构的强度不是很大，切割操作的时候电刀切割部容易发生偏差，而且电刀切割部与吸烟管接触会松动，导线性能不是很好。
在现有技术中如公开号为CN201510349U的公开文件一种高频手术电刀笔，包括手柄体、刀头、连接导线和安装在手柄体上的控制部件，控制部件与连接导线和刀头电连接，所述的刀头通过伸缩机构连接安装在手柄体上。由于该高频手术电刀笔上的刀头通过伸缩机构设置在手柄体上，在实施手术过程中，可以通过伸缩机构调整刀头的伸出长度，从而方便的进行手术。
这种就是上述申请人提到的吸烟管与电刀切割部只通过一个连接部卡合，这种卡合结构的强度不是很大，切割操作的时候电刀切割部容易发生偏差。伸缩机构与手柄体会发生松动，导致接触不良。
实用新型内容
本实用新型的目的是为了提供能给电刀切割部较大支撑力，且保证导电效果良好。
本实用新型的上述技术目的是通过以下技术方案得以实现的：一种电刀切割部的导通结构，包括电刀切割部本体、导通连接部和导通基部，所述电刀切割部本体部分被所述导通连接部覆盖且跟所述导通连接部与所述导通基部连接，所述电刀切割部本体的轴长可调节；所述导通连接部与所述导通基部连接且覆盖部分所述电刀切割部本体；所述电刀切割部本体插接在所述导通基部上。
轴长可调节是指电刀切割部本体是一个相对独立的由各种零部件组合而成的整体，但是申请人在制造的时候建造了不同的型号来满足不同切割的需要，其中最主要的改变是其轴长的改变，然后刀头是针对不同手术动作而制成的各种形状。
作为优选，所述电刀切割部本体包括长型号电刀，所述长型号电刀包括电刀本体和卡合所述电刀本体的；所述电刀本体包括电刀切割部和与所述电刀切割部旋转连接的电刀导通部；所述电刀保护罩包括卡合所述电刀切割部的第一电刀固定端、卡合所述电刀导通部的第 二电刀固定端和连接所述第一电刀固定端和所述第二电刀固定端的套管。
该电刀切割部本体是针对伸入表皮组织内部的手术，所以需要的长度就自然很长。在手术过过正中需要将因切割人体组织而产生的烟雾进行吸收并排放到外界，所述通过套管获取并传输。
作为优选，所述电刀切割部本体包括短型号电刀，所述短型号电刀包括电刀基体，设置在所述电刀基体表面的保护层和套接在所述保护层上的电刀辅助卡合件。
该电刀切割部本体是针对表皮组织的切割手术，表皮组织比较薄，划开表皮组织并不需要电刀具有很长的轴长，但是需要较强的稳定性。
作为优选，所述导通连接部包括螺纹连接在所述导通基部上的导通外壳和设置所述导通连接部与所述导通基部处的辅助限位结构。
导通外壳呈喇叭状，开口大的一端与导通基部连接，开口小的一端在电刀切割部本体外部，把长型号电刀的套管密闭覆盖，把短型号电刀的电刀基体覆盖。
作为优选，所述导通基部包括基部外壳、嵌在所述基部外壳上的启闭开关、卡嵌在所述基部外壳内的控制电路板和设置在所述基部外壳内与所述控制电路板连接的导通基座。
启闭开关嵌在外壳上可以被按下以及复位。
作为优选，所述导通基座包括导电部，设置在所述导电部外表面上的限位通道、设置在所述限位通道外表面上的密封件，所述导电部与所述控制电路板紧贴并扣合连接，被密封件覆盖的限位通道卡合在所述基部外壳内。
限位通道容纳导电部不与控制电路板接触的部分。密封件设置限位通道外部覆盖整个限位通道且不仅限于覆盖限位通道。
作为优选，所述基部外壳包括主通道和辅助通道，所述辅助通道包括容纳所述控制电路板的卡槽、设置在所述卡槽端部的固定通道。
主通道是吸烟管；辅助通道与主通道之间是密封隔绝的，防止产生的烟进入辅助通道。
作为优选，所述导电部包括卡合通道和卡合片，所述卡合通道上开设有轴向缝隙，所述卡合片上设置有挡边与开设在所述控制电路板上的限位槽配合，所述密封件向后延伸覆盖所述控制电路板以及与所述控制电路板连接的辅助部件。
卡合通道的直径可以改变，满足不同型号的电刀切割部的插接。然后固定导电部防止其在轴向移动。密封件还能将控制电路板密封覆盖，还能将连接控制电路板的导线覆盖直到导线离开基部外壳。
综上所述，本实用新型实现了电刀切割部本体方便的更换。长型号电刀的刀头距离手持 部的距离较大，采用本申请的结构可以增加刀头的可操控性，就是通过电刀保护罩两端分别设置的第一电刀固定端和第二电刀固定端来固定电刀本体，而且加强了电刀切割部本体的整体结构强度，电刀切割部旋转连接的电刀导通部，就是在电刀切割部上设有凸起的螺纹面，电刀导通部上设有凹陷的螺纹面，两者相互配合，这种螺纹面的固定连接操作方便，保证轴向上能形成一个近似的整体。短型号电刀的结构强度较强，而且稳定性很好。导通外壳为了保证切割刀头产生的烟雾全部进入电刀内部，保证了手术的环境的干净。导通基座的结构设置是为了使得将导电部更好的卡合在基部外壳，使得辅助通道能与主通道隔绝起来。塑封件是为了加强导电部与控制电路板紧密的连接，还有就是防止外界的腐蚀性液体进入控制电路板对控制电路板内的金属导线造成腐蚀，还能防止控制电路板的氧化。
附图说明
图1是本实用新型实施例一的整体示意图；
图2是本实用新型实施例一的侧视剖视图；
图3是本实用新型实施例一的长型号电刀示意图；
图4是本实用新型导通基部的部分示意图；
图5是本实用新型基部外壳的一侧示意图；
图6是本实用新型实施例二的整体示意图；
图7是本实用新型实施例二的整体剖视图；
图8是本实用新型实施例二的侧视剖视图；
图1、图2、图3、图4和图5中，1-电刀切割部本体，2-导通连接部，3-导通基部，11-长型号电刀，110-电刀本体，111-电刀保护罩，1101-电刀切割部，1102-电刀导通部，1111-第一电刀固定端，1112-第二电刀固定端，1113-套管，12-短型号电刀，121-电刀基体，122-保护层，123-电刀辅助卡合件，21-导通外壳，22-辅助限位结构，31-基部外壳，32-启闭开关，33-控制电路板，34-导通基座，341-导电部，342-限位通道，343-密封件，311-主通道，312-辅助通道，3121-卡槽，3122-固定通道，3411-卡合通道，3412-卡合片。
具体实施方式
以下结合附图对本实用新型作进一步详细说明。
如图1、图2、图3、图4和图5所示的一种电刀切割部的导通结构，包括电刀切割部本体1、导通连接部2和导通基部3。
电刀切割部本体1为长型号电刀11，长型号电刀11包括电刀本体110和卡合电刀本体110的电刀保护罩111；电刀本体110包括电刀切割部1101和与电刀切割部1101旋转连接 的电刀导通部1102；电刀保护罩111包括卡合电刀切割部1101的第一电刀固定端1111、卡合电刀导通部1102的第二电刀固定端1112和连接第一电刀固定端1111和第二电刀固定端1112的套管1113。
旋转连接是指螺纹连接，螺纹连接的结构强度大，操作的时候比较稳定，电刀切割部1101上设有凸起的螺纹面，电刀导通部1102上设有凹陷的螺纹面，两者相互咬合。这样的螺纹连接能保证电刀切割部1101在稳定的连接同时，四周还留有足够的吸烟空间。
导通连接部2包括螺纹连接在导通基部3上的导通外壳21和设置导通连接部2与导通基部3处的辅助限位结构22。导通外壳21呈喇叭状，开口大的一端与导通基部连接，开口小的一端在电刀切割部本体1外部，把长型号电刀的套管1113密闭覆盖且紧密贴合，套管1113与导通外壳21紧密贴合后会将两者之间密封，切割后的烟会进入电刀本体110，而且紧密贴合会跟导通基部3形成一个近似的整体，便于整个电刀的操控和受力。
通基部3包括基部外壳31、嵌在基部外壳31上的启闭开关32、卡嵌在基部外壳31内的控制电路板33和设置在基部外壳31内与控制电路板33连接的导通基座34。导通基座34包括导电部341，设置在导电部341外表面上的限位通道342、设置在限位通道342外表面上的密封件343，导电部341与控制电路板33紧贴并扣合连接，被密封件343覆盖的限位通道342卡合在基部外壳31内。限位通道342表面上设置有凸起，基部外壳31上设置有卡合前述凸起的卡槽。
基部外壳31包括主通道311和辅助通道312，辅助通道312包括容纳控制电路板33的卡槽3121、设置在卡槽3121端部的固定通道3122。基部外壳31通过浇筑成型的左侧部和右侧部卡接而成。导电部341包括卡合通道3411和卡合片3412，所述卡合通道3411上开设有轴向缝隙，所述卡合片3412上设置有挡边与开设在控制电路板33上的限位槽配合，设置在限位通道342上的密封件343向后延伸，就是向控制电路板33延伸，对控制电路板33进行全方位的密封覆盖，然后还可以继续延伸到与控制电路板33连接的导线上，对导线也进行密闭覆盖从而使得在辅助通道312内的零部件都被密封件343密封覆盖起来。在安装的时候先将卡合片3412与控制电路板33相互安置后横向插进左侧部或者右侧部的卡槽3121内，然后左侧部和右侧部卡接而成，这样就保证控制电路板33在轴向上的固定。
电刀切割部本体1部分被导通连接部2覆盖且跟导通连接部2与导通基部3连接，导通连接部2与导通基部3连接且覆盖部分电刀切割部本体1；电刀切割部本体1插接在所述导通基部3上，最主要的是第二电刀固定端1112插接在导通基座34内，这样电刀切割本体1可以通过手工直接拔出和插入来更换。
而且当电刀切割部1101需要更换的时候，只需要将电刀切割部1101从第一电刀固定端1111伸入然后与电刀导通部1102旋转连接。更换不同的电刀切割部1101时，仅仅需要将原先的电刀切割部1101通过旋转与电刀导通部1102分离，然后新的电刀切割部1101再次从第一电刀固定端1111伸入然后与电刀导通部1102旋转连接。
实施例二，如图4、图5、图6、图7和图8所示，电刀切割部本体1包括短型号电刀12，短型号电刀12包括电刀基体121，设置在电刀基体121表面的保护层122和套接在保护层122上的电刀辅助卡合件123。电刀基体121穿过导通连接部2且其尾部直接卡合在包含在导通基座34内的卡合通道3411内。
本具体实施例仅仅是对本实用新型的解释，其并不是对本实用新型的限制，本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改，但只要在本实用新型的权利要求范围内都受到专利法的保护。

Claims (8)

  1. 一种电刀切割部的导通结构，包括电刀切割部本体(1)、导通连接部(2)和导通基部(3)，所述电刀切割部本体(1)部分被所述导通连接部(2)覆盖且跟所述导通连接部(2)与所述导通基部(3)连接，其特征在于，所述电刀切割部本体(1)的轴长可调节；所述导通连接部(2)与所述导通基部(3)连接且覆盖部分所述电刀切割部本体(1)；所述电刀切割部本体(1)插接在所述导通基部(3)上。
  2. 根据权利要求1所述的一种电刀切割部的导通结构，其特征在于，所述电刀切割部本体(1)包括长型号电刀(11)，所述长型号电刀(11)包括电刀本体(110)和卡合所述电刀本体(110)的电刀保护罩(111)；所述电刀本体(110)包括电刀切割部(1101)和与所述电刀切割部(1101)旋转连接的电刀导通部(1102)；所述电刀保护罩(111)包括卡合所述电刀切割部(1101)的第一电刀固定端(1111)、卡合所述电刀导通部(1102)的第二电刀固定端(1112)和连接所述第一电刀固定端(1111)和所述第二电刀固定端(1112)的套管(1113)。
  3. 根据权利要求1所述的一种电刀切割部的导通结构，其特征在于，所述电刀切割部本体(1)包括短型号电刀(12)，所述短型号电刀(12)包括电刀基体(121)，设置在所述电刀基体(121)表面的保护层(122)和套接在所述保护层(122)上的电刀辅助卡合件(123)。
  4. 根据权利要求1所述的一种电刀切割部的导通结构，其特征在于，所述导通连接部(2)包括螺纹连接在所述导通基部(3)上的导通外壳(21)和设置所述导通连接部(2)与所述导通基部(3)处的辅助限位结构(22)。
  5. 根据权利要求1所述的一种电刀切割部的导通结构，其特征在于，所述导通基部(3)包括基部外壳(31)、嵌在所述基部外壳(31)上的启闭开关(32)、卡嵌在所述基部外壳(31)内的控制电路板(33)和设置在所述基部外壳(31)内与所述控制电路板(33)连接的导通基座(34)。
  6. 根据权利要求5所述的一种电刀切割部的导通结构，其特征在于，所述导通基座(34)包括导电部(341)，设置在所述导电部(341)外表面上的限位通道(342)、设置在所述限位通道(342)外表面上的密封件(343)，所述导电部(341)与所述控制电路板(33)紧贴并扣合连接，被所述密封件(343)覆盖的所述限位通道(342)卡合在所述基部外壳(31)内。
  7. 根据权利要求5或6所述的一种电刀切割部的导通结构，其特征在于，所述基部外壳(31)包括主通道(311)和辅助通道(312)，所述辅助通道(312)包括容纳所述控制电路板(33)的卡槽(3121)、设置在所述卡槽(3121)端部的固定通道(3122)。
  8. 根据权利要求6所述的一种电刀切割部的导通结构，其特征在于，所述导电部(341)包括卡合通道(3411)和卡合片(3412)，所述卡合通道(3411)上开设有轴向缝隙，所述卡合片(3412)上设置有挡边与开设在所述控制电路板(33)上的限位槽配合，所述密封件(343)向后延伸覆盖所述控制电路板(33)以及与所述控制电路板(33)连接的辅助部件。
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