WO2021031513A1 - 一次性胎儿头皮螺旋电极 - Google Patents

一次性胎儿头皮螺旋电极 Download PDF

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Publication number
WO2021031513A1
WO2021031513A1 PCT/CN2020/070796 CN2020070796W WO2021031513A1 WO 2021031513 A1 WO2021031513 A1 WO 2021031513A1 CN 2020070796 W CN2020070796 W CN 2020070796W WO 2021031513 A1 WO2021031513 A1 WO 2021031513A1
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WO
WIPO (PCT)
Prior art keywords
outer sleeve
electrode
sleeve
fixing column
spiral electrode
Prior art date
Application number
PCT/CN2020/070796
Other languages
English (en)
French (fr)
Inventor
赵德政
景小萍
Original Assignee
青岛光电医疗科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 青岛光电医疗科技有限公司 filed Critical 青岛光电医疗科技有限公司
Priority to JP2022510175A priority Critical patent/JP7324546B2/ja
Priority to US17/636,882 priority patent/US20220338778A1/en
Priority to EP20853646.6A priority patent/EP4018907A4/en
Publication of WO2021031513A1 publication Critical patent/WO2021031513A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A61B5/283—Invasive
    • A61B5/288—Invasive for foetal cardiography, e.g. scalp electrodes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/344—Foetal cardiography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/12—Manufacturing methods specially adapted for producing sensors for in-vivo measurements
    • A61B2562/125—Manufacturing methods specially adapted for producing sensors for in-vivo measurements characterised by the manufacture of electrodes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/251—Means for maintaining electrode contact with the body

Definitions

  • the utility model belongs to the technical field of medical devices, and relates to a technique for clinically detecting a fetus to collect a fetal heartbeat, in particular, it is a disposable fetal scalp spiral electrode.
  • the fetal scalp spiral electrode electrode is fixed on the fetal scalp for human physiological parameters (such as ECG signals, etc.) )Measurement.
  • the existing fetal scalp electrodes are mainly assembled by an electrode fixing column, a single spiral electrode, an auxiliary electrode, a twisted pair wire, an outer protective sleeve and a twisted pair fixing part.
  • the single spiral electrode and the auxiliary electrode are respectively arranged on the top and side of the electrode fixing column, the twisted pair is inserted into the outer protective sleeve, one end of the outer protective sleeve is provided with a twisted pair fixing component, and the electrode fixing column protects the sleeve from the outside The other end is extended or retracted.
  • the existing twisted-pair fixing parts of the fetal scalp electrodes are inconvenient to use and unreliable; the shape of the electrode fixing column and the auxiliary electrode installation structure are also unreasonable.
  • the electrode fixing column is easy to operate, and the twisted pair is fixed reliably.
  • the shape of the electrode fixing column is reasonable and safe to use. This is an urgent technical problem in this field.
  • the utility model provides a disposable fetal scalp spiral electrode.
  • the spiral electrode has convenient and accurate control of expansion and contraction, and the twisted pair is fixed conveniently and reliably.
  • the shape of the electrode fixing column is reasonable and safe to use. .
  • the disposable fetal scalp spiral electrode includes an electrode fixing column, a spiral electrode, an auxiliary electrode, a twisted pair, an inner sleeve, an outer sleeve, and an outer sleeve fixing piece.
  • One end of the outer sleeve is inserted into the outer sleeve fixing piece, so
  • the electrode fixing column extends or retracts from the other end of the outer sleeve, the spiral electrode and the auxiliary electrode are respectively arranged on the top and side of the electrode fixing column, and the inner sleeve is sleeved on the twisted pair Line, one end of the twisted pair is connected to the spiral electrode and the auxiliary electrode, and the other end of the twisted pair is led out from the outer sleeve fixing part, characterized in that the outer sleeve fixing part includes an inner sleeve and an outer sleeve A sleeve, the outer sleeve is loosely sleeved on the inner slee
  • the electrode fixing column is cylindrical
  • the auxiliary electrode is cylindrical or at least two arc-shaped pieces
  • the top end of the electrode fixing column is a spherical surface or a circular surface
  • the electrode The spiral electrode connected to the top of the fixed column is a single spiral needle.
  • a limit card is provided at the bottom end of the electrode fixing column, the periphery of the limit card is a smooth edge, and the two wires in the twisted pair are separated from the two limit cards.
  • the side extends into the electrode fixing column, the electrode fixing column, the limit card, the spiral electrode and the auxiliary electrode are injection-molded into an integral structure, and the inner sleeve is symmetrically arranged on the port of the electrode fixing column. Slot, the limit card is embedded in the two card slots for positioning.
  • a further improvement to the above technical solution a long notch is provided in the axial direction on the side wall of the outer sleeve, a limit post is provided on the outer wall of the inner sleeve, and the limit post extends into the long notch.
  • a further improvement to the above technical solution a protruding connection port is provided at one end of the outer sleeve, the outer diameter of the connection port is slightly larger than the inner diameter of the outer sleeve, and the connection port between the outer sleeve and the outer sleeve is formed Tight-fit connection.
  • the outer wall of the inner sleeve is provided with anti-slip ribs
  • the outer wall of the outer sleeve is provided with anti-slip ribs along the axial direction
  • two lugs are provided on one end of the outer wall of the outer sleeve.
  • the outer wall of the outer sleeve is provided with a non-slip annular convex strip.
  • the outer sleeve fixing member of the present utility model includes an inner sleeve and an outer sleeve.
  • the outer sleeve is loosely sleeved on the inner sleeve and can move relative to each other in the axial direction, and one end of the inner sleeve is movable Connecting a crimping coil and buckling the crimping coil can form a bite for clamping the twisted pair. In this way, the spiral electrode can be controlled easily and accurately, and the twisted pair can be fixed conveniently and reliably.
  • the electrode fixing column is cylindrical
  • the auxiliary electrode is cylindrical or at least two circular arcs
  • the top of the electrode fixing column is a spherical surface or a smooth surface
  • the top of the electrode fixing column is connected to a spiral electrode It is a single spiral needle.
  • the shape of the electrode fixing column is reasonable and safe to use.
  • a limit card is arranged at the bottom of the electrode fixing column, and the electrode fixing column, the limit card, the spiral electrode and the auxiliary electrode are injection molded into an integrated structure.
  • the structure is compact and the processing is convenient.
  • Figure 1 is a perspective view of the utility model of the disposable fetal scalp spiral electrode pressing coil buckled state
  • Embodiment 1 is a schematic diagram of the assembly of Embodiment 1 of the outer tube fixing member in the disposable fetal scalp spiral electrode of the present invention
  • FIG. 3 is a schematic diagram of the assembly of embodiment 2 of the outer tube fixing member in the disposable fetal scalp spiral electrode of the present invention
  • FIG. 4 is a schematic diagram of the assembly of embodiment 3 of the outer tube fixing member in the disposable fetal scalp spiral electrode of the present invention
  • Figure 5 is a perspective view of the disposable fetal scalp spiral electrode of the present invention in the extended state of the electrode fixing column;
  • FIG. 6 is a perspective view of the first embodiment of the electrode fixing column in the disposable fetal scalp spiral electrode of the present invention.
  • Fig. 7 is a perspective view of a second embodiment of the electrode fixing column in the disposable fetal scalp spiral electrode of the present invention.
  • an embodiment of the disposable fetal scalp spiral electrode of the present invention includes an electrode fixing column 6, a spiral electrode, an auxiliary electrode, a twisted pair 4, an outer tube 1 and an outer tube fixing member, the outer tube One end of 1 is inserted into the outer casing fixing member, the electrode fixing column 6 extends or retracts from the other end of the outer casing 1, and the spiral electrode and auxiliary electrode are respectively arranged on the top and side of the electrode fixing column 6.
  • the inner sleeve 8 is sleeved on the twisted pair 4, one end of the twisted pair 4 is respectively connected with the spiral electrode and the auxiliary electrode, and the other end of the twisted pair 4 is led out from the outer sleeve fixing member.
  • the outer sleeve fixing member includes an inner sleeve 5 and an outer sleeve 2.
  • the outer sleeve 2 is loosely sleeved on the inner sleeve 5 and can move relatively in the axial direction.
  • One end of the outer sleeve 2 is inserted into one end of the outer sleeve 1, the other end of the twisted pair 4 is drawn from the outer sleeve fixing member, and the electrode fixing column 6 extends or retracts from the other end of the outer sleeve 1.
  • One end of the outer sleeve 2 is plugged into one end of the outer sleeve 1, and one end of the inner sleeve 5 is movably connected to a pressure coil 3.
  • the concave arc 3.1 corresponds to the groove 5.3.
  • the press coil 3 is buckled on the port of the inner sleeve 5.
  • the concave arc 3.1 and the groove 5.3 form a bite for clamping the twisted pair 4.
  • the electrode fixing column 6 is cylindrical, and the auxiliary electrode provided on the side wall of the electrode fixing column 6 is composed of at least two arc-shaped auxiliary electrodes 6.1, and the top end of the electrode fixing column 6 It is a spherical surface, and the spiral electrode connected to the top of the spherical surface of the electrode fixing column 6 is a single spiral needle 7.
  • a limit card 6.2 is provided at the bottom end of the electrode fixing column 6, and the periphery of the limit card 6.2 is a smooth edge.
  • Two wires of the twisted pair 4 are respectively extended into the electrode fixing column from both sides of the limit card 6.2.
  • Two clamping slots 8.1 are symmetrically provided on the port of the inner sleeve 8 close to the electrode fixing column 6, and the limit card 6.2 at the bottom end of the electrode fixing column 6 is embedded in the two clamping slots 8.1 for positioning.
  • the electrode fixing column 6 is cylindrical
  • the auxiliary electrode provided on the side wall of the electrode fixing column 6 is a cylindrical auxiliary electrode 6.3
  • the top end of the electrode fixing column 6 is a smooth surface.
  • the spiral electrode connected to the flat top end of the column 6 is a single spiral needle 7.
  • a limit card 6.2 is provided at the bottom end of the electrode fixing column 6, and the periphery of the limit card 6.2 is a smooth edge. Two wires of the twisted pair 4 are respectively extended into the electrode fixing column from both sides of the limit card 6.2.
  • the electrode fixing column 6, the limit card 6.2, the single spiral needle 7 and the auxiliary electrode 6.1 of the circular arc sheet or the cylindrical auxiliary electrode 6.3 are injection molded into an integrated structure, the electrode fixing column 6, the limit card
  • the material of 6.2 is plastic.
  • a long notch is provided on the side wall of the outer sleeve 2 in the axial direction, and a limit is provided on the outer wall of the inner sleeve 5.
  • Position post 5.2, limit post 5.2 extend into the long slot.
  • a long notch is provided in the axial direction on the side wall of the outer sleeve 2 as a notched long notch 2.2; as shown in Figure 3, a long notch is also provided in the axial direction on the side wall of the outer sleeve 2 Can be a closed long slot 2.5.
  • connection port 2.4 is provided at one end of the outer sleeve 2.
  • the outer diameter of the connection port 2.4 is slightly larger than the inner diameter of the outer sleeve 1, and the outer sleeve 1 forms a tight fit with the connection port 2.4 of the outer sleeve 2 connection.
  • anti-slip ribs 5.1 are provided on the outer wall of the inner sleeve 5
  • anti-slip ribs 2.3 are provided on the outer wall of the outer sleeve along the axial direction.
  • Two lugs 2.1 are provided on one end of the outer wall of the outer sleeve 2.
  • an anti-slip annular protruding strip 2.6 can also be provided on the outer wall of the outer sleeve 2. In this way, the outer sleeve 2 can be pushed and pulled to move easily without setting the lug 2.1, and the structure is more concise.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pediatric Medicine (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

一种一次性胎儿头皮螺旋电极，包括电极固定柱（6）、电极固定柱（6）上的螺旋电极及辅助电极（6.1, 6.3）、双绞线（4）、内套管（8）、外套管（1）及外套管固定件，外套管（1）的一端插接外套管固定件，电极固定柱（6）从外套管（1）的另一端伸出或缩进，外套有内套管（8）的双绞线（4）一端分别连接螺旋电极和辅助电极（6.1, 6.3），另一端从外套管固定件中引出，外套管固定件中的外套筒（2）活套在内套筒（5）上，并可沿轴向相对运动，外套筒（2）一端与外套管（1）的一端插接，内套筒（5）一端活动连接的一压线圈（3）上设有一段内凹弧形（3.1），内套筒（5）端口边沿上设置凹槽（5.3），压线圈（3）扣在内套筒（5）端口上，由内凹弧形（3.1）与凹槽（5.3）形成夹持双绞线（4）的咬合口。螺旋电极伸缩控制方便、准确，双绞线（4）固定方便、可靠；电极固定柱（6）的形状设计合理，使用安全。

Description

一次性胎儿头皮螺旋电极 技术领域
本实用新型属于医疗器械技术领域，涉及临床检测胎儿采集胎儿心搏的技术，具体说是一种一次性胎儿头皮螺旋电极。
 背景技术
目前，对胎心及宫缩进行检测分为外检测和内检测，外检测受外界影响严重，其采集信号不稳定，可能出现信号断断续续，对诊断造成影响，造成误诊或者延误病情。内检测与外检测相比精确度更高，需要在破膜及子宫颈口开达2～3厘米时进行，将胎儿头皮螺旋电极电极固定在胎儿头皮上进行人体生理参数（如心电信号等）的测量。现有的胎儿头皮电极主要由电极固定柱、单螺旋电极、辅助电极、双绞线、外保护套管及双绞线固定部件组装而成。单螺旋电极及辅助电极分别设置在电极固定柱的顶端和侧面上，将双绞线插入外保护套管中，外保护套管的一端设置双绞线固定部件，电极固定柱从外保护套管的另一端伸出或缩进。现有的胎儿头皮电极的双绞线固定部件使用不便，固定不可靠；电极固定柱的形状及辅助电极安装结构也不太合理。
 技术问题
如何设计一种一次性胎儿头皮螺旋电极，电极固定柱伸缩操作方便，双绞线固定可靠，另外，另外，电极固定柱的形状设计合理，使用安全。这是目前本领域亟待解决的技术问题。
 技术解决方案
本实用新型为解决现有技术存在的问题，提供一种一次性胎儿头皮螺旋电极，螺旋电极伸缩控制方便、准确，双绞线固定方便、可靠，另外，电极固定柱的形状设计合理，使用安全。
为达到上述技术目的，本实用新型采用以下技术方案予以实现：
一次性胎儿头皮螺旋电极，包括电极固定柱、螺旋电极、辅助电极、双绞线、内套管、外套管及外套管固定件，所述外套管的一端插接所述外套管固定件，所述电极固定柱从所述外套管的另一端伸出或缩进，所述螺旋电极及辅助电极分别设置在所述电极固定柱的顶端和侧面上，所述内套管套在所述双绞线上，所述双绞线一端分别连接螺旋电极和辅助电极，所述双绞线另一端从所述外套管固定件中引出，其特征在于，所述外套管固定件包括内套筒和外套筒，所述外套筒活套在所述内套筒上，并可沿轴向相对运动，所述外套筒一端与所述外套管的一端插接，所述内套筒一端活动连接一压线圈，所述压线圈上有一段为内凹弧形，所述内套筒端口边沿上设置与所述内凹弧形对应的凹槽，所述压线圈扣在所述内套筒端口上，由所述内凹弧形与凹槽形成夹持所述双绞线的咬合口。
对上述技术方案的改进：所述电极固定柱为圆柱状，所述辅助电极为圆筒状或至少两个圆弧片，所述电极固定柱的顶端为球面或周边圆滑的平面，所述电极固定柱的顶端连接的螺旋电极为单螺旋针。
对上述技术方案的进一步改进：所述电极固定柱底端设置限位卡片，所述限位卡片的周边为圆滑边沿，所述双绞线中的两根导线分别从所述限位卡片的两侧伸入所述电极固定柱内，所述电极固定柱、限位卡片、螺旋电极及辅助电极注塑成型为一体结构，所述内套管靠近所述电极固定柱的端口上对称设置两个卡槽，所述限位卡片嵌入两个所述卡槽内定位。
对上述技术方案的进一步改进：所述外套筒侧壁上沿轴向设置长槽口，所述内套筒外壁上设置限位柱，所述限位柱伸入所述长槽口内。
对上述技术方案的进一步改进：所述外套筒一端设置突出的连接端口，所述连接端口的外径略大于所述外套管的内径，所述外套管与所述外套筒的连接端口形成紧配合连接。
对上述技术方案的进一步改进：所述内套筒外壁上设防滑凸筋，所述外套筒外壁上沿轴向设置防滑凸条，在所述外套筒外壁一端上设置两个凸耳。
对上述技术方案的进一步改进：所述外套筒外壁上设置防滑环形凸条。
 有益效果
本实用新型与现有技术相比具有如下优点和积极效果：
1、本实用新型中的外套管固定件包括内套筒和外套筒, 所述外套筒活套在所述内套筒上，并可沿轴向相对运动，而且在内套筒一端活动连接一压线圈，扣上压线圈后，可以形成夹持双绞线的咬合口，这样，螺旋电极伸缩控制方便、准确，双绞线固定方便、可靠。
2、本实用新型中的电极固定柱为圆柱状，辅助电极为圆筒状或至少两个圆弧片，电极固定柱的顶端为球面或周边圆滑的平面，电极固定柱的顶端连接的螺旋电极为单螺旋针。电极固定柱的形状设计合理，使用安全。
3、本实用新型中的电极固定柱底端设置限位卡片，电极固定柱、限位卡片、螺旋电极及辅助电极注塑成型为一体结构。结构紧凑，加工制作方便。
 附图说明
图1是本实用新型一次性胎儿头皮螺旋电极压线圈扣合状态的立体图；
图2是本实用新型一次性胎儿头皮螺旋电极中外套管固定件实施例1的装配示意图；
图3是本实用新型一次性胎儿头皮螺旋电极中外套管固定件实施例2的装配示意图；
图4是本实用新型一次性胎儿头皮螺旋电极中外套管固定件实施例3的装配示意图；
图5是本实用新型一次性胎儿头皮螺旋电极在电极固定柱伸出状态的立体图；
图6是本实用新型一次性胎儿头皮螺旋电极中电极固定柱第一种实施例的立体图；
图7是本实用新型一次性胎儿头皮螺旋电极中电极固定柱第二种实施例的立体图。
图中，1、外套管；2、外套筒；2.1、凸耳；2.2、有缺口的长槽口；2.3、防滑凸条；2.4、连接端口；2.5、封闭式长槽口；2.6、防滑环形凸条；3、压线圈；3.1、内凹弧形；4、双绞线；5、内套筒；5.1、防滑凸筋；5.2、限位柱；5.3、凹槽；6、电极固定柱；6.1、圆弧片的辅助电极；6.2、限位卡片；6.3、圆筒状的辅助电极；7、单螺旋针、8-内套管、8.1-卡槽。
 本发明的实施方式
为使本实用新型实施例的目的、技术方案和优点更加清楚，下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述。
参见图1-图7，本实用新型一次性胎儿头皮螺旋电极的实施例，包括电极固定柱6、螺旋电极、辅助电极、双绞线4、外套管1及外套管固定件，所述外套管1的一端插接所述外套管固定件，电极固定柱6从外套管1的另一端伸出或缩进，螺旋电极及辅助电极分别设置在电极固定柱6的顶端和侧面上。内套管8套在双绞线4上，双绞线4一端分别连接螺旋电极和辅助电极，双绞线4另一端从所述外套管固定件中引出。所述外套管固定件包括内套筒5和外套筒2，外套筒2活套在内套筒5上，并可沿轴向相对运动。外套筒2一端与外套管1的一端插接，双绞线4的另一端从外套管固定件中引出，电极固定柱6从外套管1的另一端伸出或缩进。外套筒2一端与外套管1的一端插接，内套筒5一端活动连接一压线圈3，在压线圈3上有一段为内凹弧形3.1，在内套筒5端口边沿上设置与内凹弧形3.1对应的凹槽5.3，压线圈3扣在内套筒5的端口上，由内凹弧形3.1与凹槽5.3形成夹持双绞线4的咬合口。
具体而言：如图6所示，电极固定柱6为圆柱状，所述电极固定柱6侧壁上设置的辅助电极至少为两个圆弧片的辅助电极6.1构成，电极固定柱6的顶端为球面，电极固定柱6的球面顶端连接的螺旋电极为单螺旋针7。电极固定柱6底端设置限位卡片6.2，限位卡片6.2的周边为圆滑边沿，将双绞线4中的两根导线分别从限位卡片6.2的两侧伸入所述电极固定柱内。内套管8靠近电极固定柱6的端口上对称设置两个卡槽8.1，电极固定柱6底端的限位卡片6.2嵌入两个卡槽8.1内定位。
如图7所示，电极固定柱6为圆柱状，所述电极固定柱6侧壁上设置的辅助电极为圆筒状的辅助电极6.3，电极固定柱6的顶端为周边圆滑的平面，电极固定柱6的平面顶端连接的螺旋电极为单螺旋针7。电极固定柱6底端设置限位卡片6.2，限位卡片6.2的周边为圆滑边沿，将双绞线4中的两根导线分别从限位卡片6.2的两侧伸入所述电极固定柱内。
为加工制作方便，将电极固定柱6、限位卡片6.2、单螺旋针7及圆弧片的辅助电极6.1或圆筒状的辅助电极6.3注塑成型为一体结构，电极固定柱6、限位卡片6.2的材质为塑料。
为了使外套筒2与内套筒5保持只是沿轴向相对移动，且移动长度有一定限度，在外套筒2侧壁上沿轴向设置长槽口，在内套筒5外壁上设置限位柱5.2，限位柱5.2伸入长槽口内。如图2所示，在外套筒2侧壁上沿轴向设置长槽口为有缺口的长槽口2.2；如图3所示，在外套筒2侧壁上沿轴向设置长槽口也可以为封闭式长槽口2.5。
参见图2-图4，在外套筒2一端设置突出的连接端口2.4，连接端口2.4的外径略大于外套管1的内径，外套管1与所述外套筒2的连接端口2.4形成紧配合连接。
为了使用时防滑，参见图2、图3，在内套筒5外壁上设防滑凸筋5.1，在外套筒外壁上沿轴向设置防滑凸条2.3， 为了方便两个手指推拉外套筒2，在外套筒2的外壁一端上设置两个凸耳2.1。
为了使用时防滑，参见图4，还可以在外套筒2的外壁上设置防滑环形凸条2.6，这样，不用设置凸耳2.1，也可以方便推拉外套筒2移动，结构更加简洁。
使用时，用手将外套筒2与内套筒5相对移动一段距离，使电极固定柱6露出外套管1的一端，将从外套管1的另一端引出的双绞线4嵌入内套筒5的凹槽5.3内，将压线圈3扣在内套筒5的端口上，由内凹弧形3.1与凹槽5.3形成的咬合口夹持固定住双绞线4。不用时，将压线圈3从内套筒5的端口脱开，用手将外套筒2与内套筒5按相反的方向相对移动一段距离，使电极固定柱6缩进外套管1的一端，再将从外套管1的另一端引出的双绞线4嵌入内套筒5的凹槽5.3内，将压线圈3扣在内套筒5的端口上，由内凹弧形3.1与凹槽5.3形成的咬合口夹持固定住双绞线4即可。
以上所述，仅是本实用新型的较佳实施例而已，并非是对本实用新型作其它形式的限制，任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更或改型为等同变化的等效实施例。但是凡是未脱离本实用新型技术方案内容，依据本实用新型的技术实质对以上实施例所作的任何简单修改、等同变化与改型，仍属于本实用新型技术方案的保护范围。

Claims (10)

  1. 一次性胎儿头皮螺旋电极，包括电极固定柱、螺旋电极、辅助电极、双绞线、内套管、外套管及外套管固定件，所述外套管的一端插接所述外套管固定件，所述电极固定柱从所述外套管的另一端伸出或缩进，所述螺旋电极及辅助电极分别设置在所述电极固定柱的顶端和侧面上，所述内套管套在所述双绞线上，所述双绞线一端分别连接螺旋电极和辅助电极，所述双绞线另一端从所述外套管固定件中引出，其特征在于，所述外套管固定件包括内套筒和外套筒，所述外套筒活套在所述内套筒上，并可沿轴向相对运动，所述外套筒一端与所述外套管的一端插接，所述内套筒一端活动连接一压线圈，所述压线圈上有一段为内凹弧形，所述内套筒端口边沿上设置与所述内凹弧形对应的凹槽，所述压线圈扣在所述内套筒端口上，由所述内凹弧形与凹槽形成夹持所述双绞线的咬合口。
  2. 根据权利要求1所述的一次性胎儿头皮螺旋电极，其特征在于，所述电极固定柱为圆柱状，所述辅助电极为圆筒状或至少两个圆弧片，所述电极固定柱的顶端为球面或周边圆滑的平面，所述电极固定柱的顶端连接的螺旋电极为单螺旋针。
  3. 根据权利要求2所述的一次性胎儿头皮螺旋电极，其特征在于，所述电极固定柱底端设置限位卡片，所述限位卡片的周边为圆滑边沿，所述双绞线中的两根导线分别从所述限位卡片的两侧伸入所述电极固定柱内，所述电极固定柱、限位卡片、螺旋电极及辅助电极注塑成型为一体结构，所述内套管靠近所述电极固定柱的端口上对称设置两个卡槽，所述限位卡片嵌入两个所述卡槽内定位。
  4. 根据权利要求1-3任一项所述的一次性胎儿头皮螺旋电极，其特征在于，所述外套筒侧壁上沿轴向设置长槽口，所述内套筒外壁上设置限位柱，所述限位柱伸入所述长槽口内。
  5. 根据权利要求1-3任一项所述的一次性胎儿头皮螺旋电极，其特征在于，所述外套筒一端设置突出的连接端口，所述连接端口的外径略大于所述外套管的内径，所述外套管与所述外套筒的连接端口形成紧配合连接。
  6. 根据权利要求4所述的一次性胎儿头皮螺旋电极，其特征在于，所述外套筒一端设置突出的连接端口，所述连接端口的外径略大于所述外套管的内径，所述外套管与所述外套筒的连接端口形成紧配合连接。
  7. 根据权利要求1-3任一项所述的一次性胎儿头皮螺旋电极，其特征在于，所述内套筒外壁上设防滑凸筋，所述外套筒外壁上沿轴向设置防滑凸条，在所述外套筒外壁一端上设置两个凸耳。
  8. 根据权利要求4述的一次性胎儿头皮螺旋电极，其特征在于，所述内套筒外壁上设防滑凸筋，所述外套筒外壁上沿轴向设置防滑凸条，在所述外套筒外壁一端上设置两个凸耳。
  9. 根据权利要求1-3任一项所述的一次性胎儿头皮螺旋电极，其特征在于，所述外套筒外壁上设置防滑环形凸条。
  10. 根据权利要求6的一次性胎儿头皮螺旋电极，其特征在于，所述外套筒外壁上设置防滑环形凸条。
PCT/CN2020/070796 2019-08-20 2020-01-08 一次性胎儿头皮螺旋电极 WO2021031513A1 (zh)

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