WO2016178051A1 - 一种超声穿刺方法和装置 - Google Patents

一种超声穿刺方法和装置 Download PDF

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Publication number
WO2016178051A1
WO2016178051A1 PCT/IB2015/001107 IB2015001107W WO2016178051A1 WO 2016178051 A1 WO2016178051 A1 WO 2016178051A1 IB 2015001107 W IB2015001107 W IB 2015001107W WO 2016178051 A1 WO2016178051 A1 WO 2016178051A1
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Prior art keywords
probe
indicator
beam direction
direction indicator
side plate
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PCT/IB2015/001107
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English (en)
French (fr)
Inventor
李毅
黎健
贺兴柏
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惠尔图像公司
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Priority to PCT/IB2015/001107 priority Critical patent/WO2016178051A1/zh
Priority to US15/546,506 priority patent/US20180021011A1/en
Publication of WO2016178051A1 publication Critical patent/WO2016178051A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
    • A61B8/0833—Detecting organic movements or changes, e.g. tumours, cysts, swellings involving detecting or locating foreign bodies or organic structures
    • A61B8/0841—Detecting organic movements or changes, e.g. tumours, cysts, swellings involving detecting or locating foreign bodies or organic structures for locating instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3403—Needle locating or guiding means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/42—Details of probe positioning or probe attachment to the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/58—Testing, adjusting or calibrating the diagnostic device
    • A61B8/587—Calibration phantoms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3403—Needle locating or guiding means
    • A61B2017/3413—Needle locating or guiding means guided by ultrasound

Definitions

  • the invention relates to the field of ultrasonic puncture, and in particular to a method and device for assisting ultrasonic superficial puncture.
  • the ultrasonic puncture probe which can display the puncture needle on the ultrasound image, and realize the ultrasound-based visual guided puncture, which can reach the lesion accurately.
  • the puncture technology has gradually developed technologies such as ultrasound indirect guiding puncture, ultrasonic puncture guided puncture, and ultrasound guided hand puncture.
  • ultrasonic indirect guided puncture is mainly used to mark the position, does not monitor the needle's orientation and position in real time, and is used for biopsy of huge masses; ultrasonic puncture guide puncture can fix the relative position of the puncture needle and the probe, with high accuracy. However, it is precisely because of its relative position that the needle can not be freely changed angle, and can not be applied to the puncture of superficial organs.
  • Ultrasound-guided hand puncture is mainly used for puncture of superficial organs and superficial tissues.
  • it is required to have various requirements, such as: to ensure that the long axis of the puncture needle is parallel to the plane of the sound beam when the needle is inserted;
  • the angle between the skin should not be greater than 60 degrees; before entering the needle, first press the finger again on the puncture point to observe the image, then mark the body surface and the needle point, and observe the image to estimate the progress. Needle angle; after the needle is inserted, the needle is inserted a little from the anesthesia point, the needle is slightly lifted, and the activity point on the image is observed.
  • the ultrasound puncture guided puncture cannot be applied to the ultrasound-guided hand puncture, and this process is painful for the patient, and the experience of the doctor And the requirements of the method are also Very high.
  • the object of the present invention is to provide an ultrasonic puncture method which can solve the problem that it is difficult to accurately and quickly display a puncture needle on an ultrasonic image when a hand puncture of a superficial tissue or a superficial organ is currently performed.
  • an ultrasonic puncture method comprising the following steps:
  • the beam emitted by the probe beam direction indicator is a linear beam.
  • the probe beam direction indicator is calibrated by the ultrasonic phantom, so that the beam emitted by the probe beam direction indicator coincides with the beam plane of the probe.
  • the invention has the following beneficial effects: the invention fixes the probe beam direction indicator on the probe through the indicator holder, and adjusts the beam emitted by the probe beam direction indicator to coincide with the sound beam plane of the probe, and performs superficial organization. Or when the freehand puncture of the superficial organ is inserted, the beam projected by the puncture needle along the probe beam direction indicator can directly reach the lesion and ensure that the puncture needle is in the sound beam plane of the probe, so the present method can be used by the present method.
  • the puncture needle is displayed accurately and quickly on the ultrasound image.
  • Another object of the present invention is to provide an ultrasonic lancing device which can solve the problem that it is difficult to accurately and quickly display a puncture needle on an ultrasonic image when a hand puncture of a superficial or superficial organ is currently performed.
  • the present invention also provides an ultrasonic lancing device comprising an indicator holder and a probe beam direction indicator, the indicator holder being detachably fixed to the probe, the indicator holder being provided with an indicator a mounting hole, the probe beam direction indicator being rotatably mounted in the indicator mounting hole, such that the light emitted by the probe beam direction indicator is rotatable in a plane perpendicular to the plane of the probe beam, A lock member is mounted on the indicator holder, and the lock member is used to lock the probe beam direction indicator.
  • the locking member is a locking bolt, and a threaded through hole is defined in the hole wall of the indicator mounting hole, and the locking bolt is installed in the threaded through hole, and the inner end of the locking bolt is The probe beam direction indicator can be tightened.
  • the probe beam direction indicator is a laser pointer.
  • the indicator holder includes a probe fixing portion and an indicator fixing portion, and the indicator fixing portion is provided with the indicator mounting hole, and the probe fixing portion includes a front side plate, a rear side plate, and a connecting bolt, the left end of the front side panel and the left end of the rear side panel are fixedly connected to the right end of the indicator fixing portion, and the right end of the front side panel and the right end of the rear side panel are connected by a connecting bolt, and the right end of the probe fixing portion
  • the front side plate, the connecting bolt and the rear side plate enclose a probe mounting hole, and the probe is installed in the probe mounting hole.
  • the ultrasonic puncturing device of the invention is provided with an indicator holder and a probe beam direction indicator, and the probe beam direction indicator is rotatably mounted in the indicator mounting hole, and can be adjusted during use.
  • the probe beam direction indicator enables the beam emitted by the probe to be in the plane of the probe beam, and the beam projected by the probe beam direction indicator can accurately guide the puncture needle puncture, thus solving the current superficial or superficial organ When the hand is puncture, it is difficult to accurately and quickly display the problem of the puncture needle on the ultrasonic image.
  • Figure 1 is a perspective view of an ultrasonic lancing device of the present invention
  • Figure 2 is a front elevational view of an ultrasonic lancing device of the present invention
  • Figure 3 is a left side view of an ultrasonic lancing device of the present invention.
  • Figure 4 is a plan view of an ultrasonic lancing device of the present invention.
  • the reference numerals in the figure are: 1-indicator holder; 11-probe fixing portion; 111-front side plate; 112-rear side plate; 113-connection bolt; 12-indicator fixing portion; 2-probe beam direction indication 3-probe; 4-locking member; 5-beam.
  • This embodiment provides an ultrasonic puncture method, comprising the following steps:
  • the probe beam direction indicator 2 is mounted on the probe 3 through the indicator holder 1, and the orientation of the probe beam direction indicator 2 is the same as the orientation of the probe 3.
  • the probe beam direction indicator 2 and the probe 3 are both disposed downward, the probe beam direction indicator 2 is rotatably mounted on the indicator holder 1, so that the beam emitted by the probe beam direction indicator 2 can be perpendicular to the beam plane of the probe 3. Rotation in the plane;
  • the probe beam direction indicator 2 is calibrated by the ultrasonic phantom. After calibrating the probe beam direction indicator 2, the probe beam direction indicator 2 is locked by the locking member 4, so that the probe beam direction indicator 2 and the probe 3 are relatively fixed in position;
  • the beam emitted by the probe beam direction indicator 2 may be a straight beam or a beam of other shapes such as a cross beam. As long as the beam has a portion that can be located in the plane of the probe beam, it can be located at the probe sound. Part of the beam in the beam plane directs the puncture needle.
  • the embodiment provides an ultrasonic lancing device including an indicator holder 1 and a probe beam direction indicator 2, and the indicator holder 1 can be detachably fixed to the probe. 3 on.
  • the indicator holder 1 is provided with an indicator mounting hole, and the probe beam direction indicator 2 is rotatably mounted in the indicator mounting hole, the probe beam direction indicator 2 and the probe 3 are both facing downward, and the probe beam direction indication
  • the light beam emitted by the device 2 is rotatable in a plane perpendicular to the plane of the sound beam of the probe 3, on which the locking member 4 is mounted, and the locking member 4 is used to lock the probe beam direction indicator 2.
  • the probe sound beam direction indicator 2 is a laser pointer, and can emit light beams of various shapes such as a straight beam or a cross beam.
  • the indicator holder 1 includes a probe fixing portion 11 and an indicator fixing portion 12.
  • An indicator mounting hole is opened in the indicator fixing portion 12.
  • the probe fixing portion 11 includes a front side plate 111, a rear side plate 112, and a connecting bolt 113.
  • the left end of the front side plate 111 and the left end of the rear side plate 112 are fixedly coupled to the right end of the indicator fixing portion 12, and the right end of the front side plate 111
  • the right end of the rear side panel 112 is connected by a connecting bolt 113.
  • the indicator fixing portion 12, the front side plate 111, and the rear side plate 112 are integrally formed.
  • the probe 3 is mounted in the probe mounting hole, and the fixing connection between the indicator holder 1 and the probe 3 can be achieved by tightening the connecting bolt 113.
  • the locking member 4 is a locking bolt, and a threaded through hole is formed in the hole wall of the indicator mounting hole, and the locking bolt is installed in the threaded through hole, and the inner end of the locking bolt can tighten the probe sound beam Direction indicator 2.
  • the ultrasonic lancing device adjusts the angle between the beam emitted by the probe beam direction indicator 2 and the beam plane of the probe 3, the beam emitted by the probe beam direction indicator 2 (such as a straight beam) is irradiated on the ultrasonic phantom.
  • the locking member 4 rotates the probe beam direction indicator 2 so that the emitted beam 5 is located in the ultrasonic plane of the probe 3, and then tighten the locking member 4 to tighten the probe beam direction indicator. 2 can be.
  • the locking member in this embodiment may further adopt a snap ring, and the snap ring is fixedly mounted on the indicator fixing portion.
  • the snap ring includes two half rings, one ends of the two half rings are fixedly connected together, and the other end is connected by bolts or For the free end.
  • the inner diameter of the snap ring is changed by tightening the bolt, thereby clamping the probe beam direction indicator; when having the free end, the probe beam direction indicator is clamped by its own elastic deformation.

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Abstract

本发明公开了一种超声穿刺方法，包括下列步骤：S10、通过指示器固定架将探头声束方向指示器安装在探头上，所述探头声束方向指示器的朝向与探头的朝向相同，并使所述探头声束方向指示器发射的光束能够在垂直于探头声束平面的平面内旋转；S20、旋转探头声束方向指示器，使探头声束方向指示器发射的光束与探头的声束平面重合，并通过锁紧件锁紧所述探头声束方向指示器；S30、将探头置于体表，寻找到病灶后，将穿刺针沿着探头声束方向指示器投射出的光束插入。本发明超声穿刺方法能够解决目前进行浅表组织或浅表器官的徒手穿刺时，难以准确快速地在超声图像上显示穿刺针的问题。本发明还公开了一种超声穿刺装置。

Description

一种超声穿刺方法和装置 技术领域
本发明涉及超声穿刺领域，尤其涉及一种用于辅助超声浅表穿刺的方法和装置。
背景技术
上世纪七十年代，Goldberg和Holm发明了超声穿刺探头，可以在超声图像上显示穿刺针头，实现了基于超声的可视引导穿刺，可以准确的到达病灶。伴随着技术发展，穿刺技术逐渐发展出超声间接引导穿刺、超声穿刺架引导穿刺、超声引导徒手穿刺等技术。
其中，超声间接引导穿刺主要用来标记位置，并不实时监控针头的走向和位置，用于巨大肿块等的活检；超声穿刺架引导穿刺可以固定穿刺针与探头的相对位置，具有很高准确性，但是正是因为其相对位置固定，导致穿刺针不能随意改变角度，不能应用于浅表器官的穿刺。
超声引导下的徒手穿刺，主要用于浅表器官和浅表组织的穿刺，操作时，需要有多方面的要求，如：进针时要保证穿刺针长轴与声束平面平行；穿刺针与皮肤的夹角不能大于60度；进针前，首先用手指在穿刺定位点上再按压一次，观察图像情况，然后在体表定位点与进针点做好标记，并观察图像，估测进针角度；进针后，由麻醉点进针少许，较微提插针，并观察其在图像上的活动点。
由于在超声引导徒手穿刺时需要反复调整位置，直至穿刺针显示在超声图像上，因此超声穿刺架引导穿刺不可能适用于超声引导徒手穿刺，并且这个过程对于病患是痛苦的，对医生的经验和手法要求也 很高。
发明内容
本发明目的是提供一种超声穿刺方法，能够解决目前进行浅表组织或浅表器官的徒手穿刺时，难以准确快速地在超声图像上显示穿刺针的问题。
本发明解决技术问题采用如下技术方案：一种超声穿刺方法，包括下列步骤：
S10、通过指示器固定架将探头声束方向指示器安装在探头上，所述探头声束方向指示器的朝向与探头的朝向相同，并使所述探头声束方向指示器发射的光束能够在垂直于探头声束平面的平面内旋转；
S20、旋转探头声束方向指示器，使探头声束方向指示器发射的光束与探头的声束平面重合，并通过锁紧件锁紧所述探头声束方向指示器；
S30、将探头置于体表，寻找到病灶后，将穿刺针沿着探头声束方向指示器投射出的光束插入。
可选的，所述探头声束方向指示器发射的光束为直线光束。
可选的，所述步骤S20中，通过超声体模校准探头声束方向指示器，使探头声束方向指示器发射的光束与探头的声束平面重合。
本发明具有如下有益效果：本发明通过指示器固定架将探头声束方向指示器固定在探头上，并调整探头声束方向指示器发射的光束与探头的声束平面重合，在进行浅表组织或浅表器官的徒手穿刺时，将穿刺针沿着探头声束方向指示器投射出的光束插入，就可以直达病灶，并保证穿刺针在探头的声束平面内，因此本通使用本方法可以准确快速地在超声图像上显示穿刺针。
本发明的另一个目的是提供一种超声穿刺装置，能够解决目前进行浅表组织或浅表器官的徒手穿刺时，难以准确快速地在超声图像上显示穿刺针的问题。
本发明还提供了一种超声穿刺装置，包括指示器固定架和探头声束方向指示器，所述指示器固定架能够可拆卸地固定在探头上，所述指示器固定架上设置有指示器安装孔，所述探头声束方向指示器可转动地安装在所述指示器安装孔内，使所述探头声束方向指示器发射的光线能够在垂直于探头声束平面的平面内旋转，所述指示器固定架上安装有锁紧件，所述锁紧件用于锁定探头声束方向指示器。
可选的，所述锁紧件为锁紧螺栓，所述指示器安装孔的孔壁上开设有螺纹通孔，所述锁紧螺栓安装在螺纹通孔内，所述锁紧螺栓的内端能够顶紧所述探头声束方向指示器。
可选的，所述探头声束方向指示器为激光指示器。
可选的，所述指示器固定架包括探头固定部和指示器固定部，所述指示器固定部上开设有所述指示器安装孔，所述探头固定部包括前侧板、后侧板和连接螺栓，所述前侧板的左端和后侧板的左端均固定连接在指示器固定部的右端，前侧板的右端和后侧板的右端通过连接螺栓连接，所述探头固定部的右端、前侧板、连接螺栓和后侧板围成探头安装孔，所述探头安装在探头安装孔内。
本发明具有如下有益效果：本发明超声穿刺装置通过设置指示器固定架和探头声束方向指示器，探头声束方向指示器可转动地安装在所述指示器安装孔内，在使用时能够调整探头声束方向指示器，使其发射的光束在探头声束平面内，通过探头声束方向指示器投射出的光束能够准确的指引穿刺针穿刺，因此能够解决目前进行浅表组织或浅表器官的徒手穿刺时，难以准确快速地在超声图像上显示穿刺针的问题。
附图说明
图1为本发明一种超声穿刺装置的立体图；
图2为本发明一种超声穿刺装置的主视图；
图3为本发明一种超声穿刺装置的左视图；
图4为本发明一种超声穿刺装置的俯视图；
图中标记示意为：1-指示器固定架；11-探头固定部；111-前侧板；112-后侧板；113-连接螺栓；12-指示器固定部；2-探头声束方向指示器；3-探头；4-锁紧件；5-光束。
具体实施方式
下面结合实施例及附图对本发明的技术方案作进一步阐述。
实施例1
本实施例提供了一种超声穿刺方法，包括下列步骤：
S10、通过指示器固定架1将探头声束方向指示器2安装在探头3上，探头声束方向指示器2的朝向与探头3的朝向相同，参考图1所示，探头声束方向指示器2与探头3均朝下设置，探头声束方向指示器2可转动地安装在指示器固定架1上，从而使探头声束方向指示器2发射的光束能够在垂直于探头3声束平面的平面内旋转；
S20、旋转探头声束方向指示器2，使探头声束方向指示器2发射的光束与探头3的声束平面重合，本实施例中通过超声体模来校准探头声束方向指示器2。校准探头声束方向指示器2后，通过锁紧件4锁紧探头声束方向指示器2，使探头声束方向指示器2和探头3相对位置固定；
S30、将探头3置于体表，寻找到病灶后，将穿刺针沿着探头声束方向指示器2投射出的光束插入，这样就可以直达病灶，并且能够保证穿刺针在探头3的声束平面内。
本实施例中探头声束方向指示器2发射的光束可以为直线光束，也可以为十字光束等其他形状的光束，只要该光束具有能够位于探头声束平面内的部分，就可以通过位于探头声束平面内的部分光束指引穿刺针穿刺。
实施例2
如图1、图2、图3所示，本实施例提供了一种超声穿刺装置，包括指示器固定架1和探头声束方向指示器2，指示器固定架1能够可拆卸地固定在探头3上。指示器固定架1上设置有指示器安装孔，探头声束方向指示器2可转动地安装在指示器安装孔内，探头声束方向指示器2与探头3均朝下，探头声束方向指示器2发射的光束能够在垂直于探头3声束平面的平面内旋转，在指示器固定架1上安装有锁紧件4，锁紧件4用于锁定探头声束方向指示器2。本实施例中探头声束方向指示器2为激光指示器，可以发射直线光束或十字光束等各种形状的光束。
如图4所示，指示器固定架1包括探头固定部11和指示器固定部12。指示器固定部12上开设有指示器安装孔。探头固定部11包括前侧板111、后侧板112和连接螺栓113，前侧板111的左端和后侧板112的左端均固定连接在指示器固定部12的右端，前侧板111的右端和后侧板112的右端通过连接螺栓113连接，本实施例中指示器固定部12、前侧板111和后侧板112为一体成型。探头固定部11的右端、前侧板111、连接螺栓113和后侧板112围成探头安装孔，探头安装孔的形状与探头3的截面形状基本相同，探头3安装在探头安装孔内。将探头3安装在探头安装孔内，再通过拧紧连接螺栓113，即可实现指示器固定架1和探头3之间的固定连接。
本实施例中，锁紧件4为锁紧螺栓，指示器安装孔的孔壁上开设有螺纹通孔，锁紧螺栓安装在螺纹通孔内，锁紧螺栓的内端能够顶紧探头声束方向指示器2。
本超声穿刺装置在调节探头声束方向指示器2发射的光束与探头3声束平面之间的角度时，探头声束方向指示器2发射的光束(如直线光束)照射在超声体模上，先将锁紧件4拧松，然后转动探头声束方向指示器2，使其发射的光束5位于探头3的超声平面内，然后再将锁紧件4拧紧，顶紧探头声束方向指示器2即可。
本实施例中的锁紧件还可以采用卡环，卡环固定安装在指示器固定部上，卡环包括两个半环，两个半环的一端固定连接在一起，另一端通过螺栓连接或者为自由端。当通过螺栓连接时，通过松紧螺栓来改变卡环的内径，从而卡紧探头声束方向指示器；当具有自由端时，通过其自身弹性变形卡紧探头声束方向指示器。
以上实施例的先后顺序仅为便于描述，不代表实施例的优劣。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (7)

  1. 一种超声穿刺方法，其特征在于，包括下列步骤：
    S10、通过指示器固定架(1)将探头声束方向指示器(2)安装在探头(3)上，所述探头声束方向指示器(2)的朝向与探头(3)的朝向相同，并使所述探头声束方向指示器(2)发射的光束能够在垂直于探头(3)声束平面的平面内旋转；
    S20、旋转探头声束方向指示器(2)，使探头声束方向指示器(2)发射的光束与探头(3)的声束平面重合，并通过锁紧件(4)锁紧所述探头声束方向指示器(2)；
    S30、将探头(3)置于体表，寻找到病灶后，将穿刺针沿着探头声束方向指示器(2)投射出的光束插入。
  2. 根据权利要求1所述的一种超声穿刺方法，其特征在于，所述探头声束方向指示器(2)发射的光束为直线光束。
  3. 根据权利要求1或2所述的一种超声穿刺方法，其特征在于，所述步骤S20中，通过超声体模校准探头声束方向指示器(2)，使探头声束方向指示器(2)发射的光束与探头(3)的声束平面重合。
  4. 一种超声穿刺装置，其特征在于，包括指示器固定架(1)和探头声束方向指示器(2)，所述指示器固定架(1)能够可拆卸地固定在探头(3)上，所述指示器固定架(1)上设置有指示器安装孔，所述探头声束方向指示器(2)可转动地安装在所述指示器安装孔内，使所述探头声束方向指示器(2)发射的光束能够在垂直于探头(3)声束平面的平面内旋转，所述指示器固定架(1)上安装有锁紧件(4)，所述锁紧件(4)用于锁定探头声束方向指示器(2)。
  5. 根据权利要求4所述的超声穿刺装置，其特征在于，所述锁紧件(4)为锁紧螺栓，所述指示器安装孔的孔壁上开设有螺纹通孔，所述锁紧螺栓安装在螺纹通孔内，所述锁紧螺栓的内端能够顶紧所述探头声束方向指示器(2)。
  6. 根据权利要求5所述的超声穿刺装置，其特征在于，所述探头 声束方向指示器(2)为激光指示器。
  7. 根据权利要求6所述的超声穿刺装置，其特征在于，所述指示器固定架(1)包括探头固定部(11)和指示器固定部(12)，所述指示器固定部(12)上开设有所述指示器安装孔，所述探头固定部(11)包括前侧板(111)、后侧板(112)和连接螺栓(113)，所述前侧板(111)的左端和后侧板(112)的左端均固定连接在指示器固定部(12)的右端，前侧板(111)的右端和后侧板(112)的右端通过连接螺栓(113)连接，所述探头固定部(11)的右端、前侧板(111)、连接螺栓(113)和后侧板(112)围成探头安装孔，所述探头(3)安装在探头安装孔内。
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