CN102068283A - Transvaginal volume probe - Google Patents

Transvaginal volume probe Download PDF

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CN102068283A
CN102068283A CN201010605093.2A CN201010605093A CN102068283A CN 102068283 A CN102068283 A CN 102068283A CN 201010605093 A CN201010605093 A CN 201010605093A CN 102068283 A CN102068283 A CN 102068283A
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backguy
pulley block
tension pulley
tensioning spring
tension
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CN102068283B (en
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刘炯斌
侯逸琏
蔡恒辉
郑庆璋
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Shantou Institute of Ultrasonic Instruments Co Ltd
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Shantou Institute of Ultrasonic Instruments Co Ltd
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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
    • A61B8/44—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
    • A61B8/4461—Features of the scanning mechanism, e.g. for moving the transducer within the housing of the probe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
    • 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
    • A61B8/4461—Features of the scanning mechanism, e.g. for moving the transducer within the housing of the probe
    • A61B8/4466—Features of the scanning mechanism, e.g. for moving the transducer within the housing of the probe involving deflection of the probe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
    • A61B8/4494—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer characterised by the arrangement of the transducer elements
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/35—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
    • G10K11/352—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer
    • G10K11/355—Arcuate movement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/8934—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a dynamic transducer configuration
    • G01S15/8938—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a dynamic transducer configuration using transducers mounted for mechanical movement in two dimensions
    • G01S15/894—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a dynamic transducer configuration using transducers mounted for mechanical movement in two dimensions by rotation about a single axis

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  • Animal Behavior & Ethology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
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  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Gynecology & Obstetrics (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Transmission Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

一种经阴道容积探头，包括外壳体、探头芯部、转轴、驱动电机和传动机构，转轴可转动安装在外壳体中，探头芯部固定安装在转轴上，其特征是：所述传动机构包括绕线轮、第一拉线、用于导引第一拉线的第一滑轮组、第二拉线、以及用于导引第二拉线的第二滑轮组；绕线轮固定安装在驱动电机的动力输出轴上；第一拉线的一端与绕线轮固定连接，第一拉线的另一端与转轴或探头芯部连接；第二拉线的一端与绕线轮固定连接，第二拉线的另一端与转轴或探头芯部连接。本发明采用滑轮组和拉线构成传动机构，结构简单紧凑，易于组装，制造成本较低；通过驱动电机的动力输出轴的往复转动，使探头芯部绕转轴同步摆动，实现体扫扫描，运行稳定。

Figure 201010605093

A transvaginal volume probe, comprising an outer casing, a probe core, a rotating shaft, a drive motor and a transmission mechanism, the rotating shaft is rotatably installed in the outer casing, and the probe core is fixedly installed on the rotating shaft, characterized in that the transmission mechanism includes The winding wheel, the first backguy, the first pulley group for guiding the first backguy, the second backguy, and the second pulley group for guiding the second backguy; the winding wheel is fixedly mounted on the power take-off shaft of the driving motor ; One end of the first cable is fixedly connected to the winding wheel, and the other end of the first cable is connected to the rotating shaft or the probe core; one end of the second cable is fixedly connected to the winding wheel, and the other end of the second cable is connected to the rotating shaft or the probe core department connection. The present invention adopts a pulley block and a pull wire to form a transmission mechanism, which has a simple and compact structure, is easy to assemble, and has a low manufacturing cost; through the reciprocating rotation of the power output shaft of the driving motor, the core of the probe is synchronously oscillated around the rotating shaft to realize body scanning and stable operation.

Figure 201010605093

Description

一种经阴道容积探头 A transvaginal volume probe

技术领域technical field

本发明涉及超声波探头，具体地说，涉及一种经阴道容积探头。The invention relates to an ultrasonic probe, in particular to a transvaginal volume probe.

背景技术Background technique

经阴道容积探头是一种体扫型超声波探头，能够实现超声波束的体扫扫描，可用于妇科腔体检查。现有的经阴道容积探头包括外壳体、探头芯部、转轴、驱动电机和传动机构；转轴可转动安装在外壳体中，探头芯部固定安装在转轴上，探头芯部中设有超声换能器，外壳体内壁与探头芯部之间的空隙中通常填充有耦合剂；驱动电机和传动机构设于外壳体中，驱动电机的动力输出轴通过传动机构与上述转轴传动连接，驱动电机的动力输出轴通过传动机构带动探头芯部绕转轴往复摆动，探头芯部中的超声换能器通过超声发射和超声回波接收，对检查部位进行扫描，产生扫描信号。The transvaginal volume probe is a body-scanning ultrasound probe, which can realize the body-scanning scanning of the ultrasound beam, and can be used for gynecological cavity examination. The existing transvaginal volume probe includes an outer casing, a probe core, a rotating shaft, a driving motor and a transmission mechanism; the rotating shaft is rotatably installed in the outer casing, the probe core is fixedly installed on the rotating shaft, and an ultrasonic transducer The gap between the inner wall of the casing and the core of the probe is usually filled with coupling agent; the driving motor and the transmission mechanism are arranged in the casing, the power output shaft of the driving motor is connected to the above-mentioned rotating shaft through the transmission mechanism, and the power of the driving motor The output shaft drives the probe core to swing back and forth around the rotating shaft through the transmission mechanism, and the ultrasonic transducer in the probe core scans the inspection site through ultrasonic emission and ultrasonic echo reception to generate scanning signals.

现有的经阴道容积探头中的传动机构常用连杆摆动机构，结构比较复杂，较难组装，占有空间大，且运行的稳定性较差。The transmission mechanism in the existing transvaginal volume probe usually uses a connecting rod swing mechanism, which has a relatively complicated structure, is difficult to assemble, occupies a large space, and has poor operation stability.

发明内容Contents of the invention

本发明所要解决的技术问题是提供一种经阴道容积探头，这种经阴道容积探头的传动机构结构简单紧凑，易于组装，且运行稳定。采用的技术方案如下：The technical problem to be solved by the present invention is to provide a transvaginal volume probe. The transmission mechanism of the transvaginal volume probe has a simple and compact structure, is easy to assemble, and operates stably. The technical scheme adopted is as follows:

在一种方案中，一种经阴道容积探头，包括外壳体、探头芯部、转轴、驱动电机和传动机构，探头芯部、驱动电机和传动机构设于外壳体中，转轴可转动安装在外壳体中，探头芯部固定安装在转轴上，其特征是：所述传动机构包括绕线轮、第一拉线、用于导引第一拉线的第一滑轮组、第二拉线、以及用于导引第二拉线的第二滑轮组；绕线轮固定安装在驱动电机的动力输出轴上；第一拉线的一端与绕线轮固定连接，第一拉线的另一端与转轴或探头芯部连接；第二拉线的一端与绕线轮固定连接，第二拉线的另一端与转轴或探头芯部连接。In one solution, a transvaginal volume probe includes an outer casing, a probe core, a rotating shaft, a driving motor and a transmission mechanism, the probe core, the driving motor and a transmission mechanism are arranged in the outer casing, and the rotating shaft is rotatably mounted on the outer casing In the body, the probe core is fixedly installed on the rotating shaft, and the feature is that: the transmission mechanism includes a winding wheel, a first pulley, a first pulley group for guiding the first pulley, a second pulley, and a The second pulley set of the second backguy; the winding wheel is fixedly installed on the power output shaft of the drive motor; one end of the first backguy is fixedly connected with the winding wheel, and the other end of the first backguy is connected with the rotating shaft or the core of the probe; the second One end of the pull wire is fixedly connected with the winding wheel, and the other end of the second pull wire is connected with the rotating shaft or the core of the probe.

可以将上述第一拉线的一端固定在绕线轮上并在绕线轮上缠绕若干圈后，再绕经第一滑轮组，并将其另一端固定连接到转轴或探头芯部的一侧；同样，可以将上述第二拉线的一端固定在绕线轮上并在绕线轮上缠绕若干圈后，再绕经第二滑轮组，并将其另一端固定连接到转轴或探头芯部的另一侧。这样可以提高第一拉线及第二拉线端部与绕线轮的连接牢固程度。One end of the above-mentioned first backguy can be fixed on the winding wheel and wound several times on the winding wheel, then wound through the first pulley block, and the other end is fixedly connected to one side of the rotating shaft or the core of the probe; , one end of the above-mentioned second cable can be fixed on the winding wheel and wound several times on the winding wheel, then wound through the second pulley group, and the other end is fixedly connected to the other side of the shaft or the core of the probe . In this way, the firmness of the connection between the end of the first pull wire and the second pull wire and the winding wheel can be improved.

通常，第一拉线和第二拉线在转轴或探头芯部上有一包角。Typically, the first and second pull wires have a wrap angle on the shaft or probe core.

通常，第一滑轮组由若干个滑轮组成，其中每个滑轮都对第一拉线的绕行路线起导引作用；第二滑轮组由若干个滑轮组成，其中每个滑轮都对第二拉线的绕行路线起导引作用。Usually, the first pulley block is composed of several pulleys, each of which guides the detour route of the first stay wire; the second pulley block is composed of several pulleys, each of which guides the detour of the second stay wire The route acts as a guide.

为了使第一拉线和第二拉线更好地保持张紧状态，使探头芯部的摆动与驱动电机的动力输出轴的转动更好地保持同步(通常转轴的角速度与动力输出轴的角速度大小成正比)，优选上述传动机构还包括第一张紧弹簧和第二张紧弹簧，第一滑轮组包括第一张紧滑轮，第一张紧滑轮的支座与第一张紧弹簧的一端连接或接触，第二滑轮组包括第二张紧滑轮，第二张紧滑轮的支座与第二张紧弹簧的一端连接或接触，第一张紧弹簧的另一端和第二张紧弹簧的另一端均与外壳体连接或接触；上述第一张紧弹簧对第一张紧滑轮的支座产生作用力，使绕在第一滑轮组上的第一拉线一直保持张紧状态；上述第二张紧弹簧对第二张紧滑轮的支座产生作用力，使绕在第二滑轮组上的第二拉线一直保持张紧状态。在一具体方案中，第一张紧弹簧和第二张紧弹簧可采用扭力弹簧，第一张紧滑轮的支座和第二张紧滑轮的支座均可转动安装在外壳体上，第一张紧弹簧的两端分别与第一张紧滑轮的支座和外壳体接触，第二张紧弹簧的两端分别与第二张紧滑轮的支座和外壳体接触。当然，第一张紧弹簧和第二张紧弹簧也可采用压缩弹簧或拉伸弹簧。在另一种优选方案中，优选上述传动机构还包括张紧弹簧，第一滑轮组包括第一张紧滑轮，第二滑轮组包括第二张紧滑轮，第一张紧滑轮和第二张紧滑轮安装在同一张紧滑轮支座上，所述张紧滑轮支座与张紧弹簧的一端连接或接触，张紧弹簧的另一端与外壳体连接或接触；上述张紧弹簧对张紧滑轮支座产生作用力，使绕在第一滑轮组上的第一拉线和绕在第二滑轮组上的第二拉线都一直保持张紧状态。在一具体方案中，上述张紧弹簧可采用扭力弹簧，张紧滑轮支座可转动安装在外壳体上，张紧弹簧的两端分别与张紧滑轮支座和外壳体接触。当然，张紧弹簧也可采用压缩弹簧或拉伸弹簧。由于第一拉线和第二拉线均保持张紧状态，因此在驱动电机的动力输出轴带动绕线轮转动的同时，第一拉线或第二拉线即可带动转轴及探头芯部同步转动，有效避免因绕线轮空转(空转是指如果第一拉线或第二拉线松弛，则绕线轮开始转动时没能通过拉线带动转轴及探头芯部转动的情况)而产生的传动误差。另外，经阴道容积探头经长期使用，第一拉线和第二拉线由于长期收到拉力的作用，往往会产生变形而增长，通过设置上述第一张紧弹簧及第二张紧弹簧、或设置张紧弹簧，可及时自动调整相对应的滑轮(即第一张紧滑轮和第二张紧滑轮)的位置，使第一拉线和第二拉线始终保持张紧状态，避免第一拉线或第二拉线因长度增加而松弛。In order to keep the first guy wire and the second guy wire in tension better, the swing of the probe core and the rotation of the power output shaft of the drive motor are better kept in sync (usually the angular velocity of the rotating shaft is proportional to the angular velocity of the power output shaft) Proportional), preferably the transmission mechanism also includes a first tension spring and a second tension spring, the first pulley set includes a first tension pulley, and the support of the first tension pulley is connected or contacted with one end of the first tension spring , the second pulley block includes a second tensioning pulley, the support of the second tensioning pulley is connected or contacted with one end of the second tensioning spring, the other end of the first tensioning spring and the other end of the second tensioning spring are both connected to The outer casing is connected or contacted; the above-mentioned first tension spring exerts a force on the support of the first tension pulley, so that the first stay wire wound on the first pulley block is always kept in tension; the above-mentioned second tension spring exerts a force on the support of the first tension pulley. The bearings of the two tensioning pulleys generate active force, so that the second stay wire wound on the second pulley block is always kept in tension. In a specific solution, the first tension spring and the second tension spring can be torsion springs, and the support of the first tension pulley and the support of the second tension pulley can be rotatably mounted on the outer casing. The two ends of the tensioning spring are respectively in contact with the support of the first tensioning pulley and the outer shell, and the two ends of the second tensioning spring are respectively in contact with the support of the second tensioning pulley and the outer shell. Of course, the first tension spring and the second tension spring can also be compression springs or tension springs. In another preferred solution, it is preferred that the above-mentioned transmission mechanism further includes a tension spring, the first pulley set includes a first tension pulley, the second pulley set includes a second tension pulley, and the first tension pulley and the second tension pulley are installed On the same tensioning pulley support, the tensioning pulley support is connected or in contact with one end of the tension spring, and the other end of the tension spring is connected or in contact with the outer shell; Active force keeps the first backguy around the first block of pulleys and the second backguy around the second block of pulleys always in tension. In a specific solution, the above-mentioned tension spring may be a torsion spring, the tension pulley support is rotatably mounted on the outer shell, and the two ends of the tension spring are respectively in contact with the tension pulley support and the outer shell. Of course, the tension spring can also be a compression spring or a tension spring. Since both the first and second pull wires are kept in a tensioned state, when the power output shaft of the drive motor drives the reel to rotate, the first or second pull wire can drive the rotating shaft and the probe core to rotate synchronously, effectively avoiding The transmission error caused by the idling of the reel (idling refers to the situation that if the first or second cable is loose, the reel fails to drive the rotating shaft and the core of the probe to rotate when the reel starts to rotate). In addition, after long-term use of the transvaginal volume probe, the first pull wire and the second pull wire tend to deform and grow due to long-term tension. By setting the above-mentioned first tension spring and second tension spring, or setting tension Tighten the spring, which can automatically adjust the position of the corresponding pulleys (namely the first tensioning pulley and the second tensioning pulley) in time, so that the first pulley and the second pulley are always kept in tension, avoiding the tension of the first pulley or the second pulley. Relaxed due to increased length.

在另一种方案中，一种经阴道容积探头，包括外壳体、探头芯部、转轴、驱动电机和传动机构，探头芯部、驱动电机和传动机构设于外壳体中，转轴可转动安装在外壳体中，探头芯部固定安装在转轴上，其特征是：所述传动机构包括绕线轮、拉线、用于导引拉线的第一滑轮组及第二滑轮组，绕线轮固定安装在驱动电机的动力输出轴上，拉线的两端均与转轴或探头芯部固定连接，拉线的中段缠绕在绕线轮上，拉线一端至绕线轮之间的一段拉线构成第一拉线段，第一拉线段与第一滑轮组配合，拉线另一端至绕线轮之间的一段拉线构成第二拉线段，第二拉线段与第二滑轮组配合。也就是说，上述拉线以绕线轮为界，分成两段，这两段拉线分别与第一滑轮组和第二滑轮组配合。这种方案中，应当使拉线与绕线轮之间有足够大的摩擦力，以防止拉线与绕线轮之间打滑。增大拉线与绕线轮之间的摩擦力的常用技术手段可以是：使绕线轮与拉线接触的面具有一定的粗糙度，增加绕线轮与拉线之间的接触面积，等等。通常，拉线的两端在转轴或探头芯部上有一包角。In another solution, a transvaginal volume probe includes an outer casing, a probe core, a rotating shaft, a driving motor and a transmission mechanism, the probe core, the driving motor and a transmission mechanism are arranged in the outer casing, and the rotating shaft is rotatably mounted on In the outer shell, the core of the probe is fixedly installed on the rotating shaft, and the feature is that: the transmission mechanism includes a winding wheel, a pull wire, a first pulley block and a second pulley block for guiding the pull wire, and the winding wheel is fixedly mounted on the drive motor On the power output shaft of the power output shaft, both ends of the pull wire are fixedly connected with the rotating shaft or the core of the probe, the middle section of the pull wire is wound on the winding wheel, and a section of the pull wire between one end of the pull wire and the winding wheel constitutes the first pull wire segment. The wire segment cooperates with the first pulley block, and a segment of the wire segment between the other end of the wire and the winding wheel constitutes the second wire segment, and the second wire segment cooperates with the second pulley block. That is to say, the above-mentioned backguy is divided into two sections with the winding wheel as the boundary, and these two sections of backguy cooperate with the first pulley block and the second pulley block respectively. In this solution, there should be enough friction between the backguy and the reel to prevent slipping between the backguy and the reel. Common technical means for increasing the frictional force between the backguy and the reel may be: making the contact surface of the reel and the backguy have a certain roughness, increasing the contact area between the reel and the backguy, and so on. Typically, the ends of the pull wire have a wrap angle on the shaft or probe core.

为了使拉线更好地保持张紧状态，使探头芯部的摆动与驱动电机的动力输出轴的转动更好地保持同步(通常转轴的角速度与动力输出轴的角速度大小成正比)，优选上述传动机构还包括第一张紧弹簧和第二张紧弹簧，第一滑轮组包括第一张紧滑轮，第一张紧滑轮的支座与第一张紧弹簧的一端连接或接触，第二滑轮组包括第二张紧滑轮，第二张紧滑轮的支座与第二张紧弹簧的一端连接或接触，第一张紧弹簧的另一端和第二张紧弹簧的另一端均与外壳体连接或接触；上述第一张紧弹簧对第一张紧滑轮的支座产生作用力，使绕在第一滑轮组上的第一拉线段一直保持张紧状态；上述第二张紧弹簧对第二张紧滑轮的支座产生作用力，使绕在第二滑轮组上的第二拉线段一直保持张紧状态。在一具体方案中，第一张紧弹簧和第二张紧弹簧可采用扭力弹簧，第一张紧滑轮的支座和第二张紧滑轮的支座均可转动安装在外壳体上，第一张紧弹簧的两端分别与第一张紧滑轮的支座和外壳体接触，第二张紧弹簧的两端分别与第二张紧滑轮的支座和外壳体接触。当然，第一张紧弹簧和第二张紧弹簧也可采用压缩弹簧或拉伸弹簧。在另一种优选方案中，优选上述传动机构还包括张紧弹簧，第一滑轮组包括第一张紧滑轮，第二滑轮组包括第二张紧滑轮，第一张紧滑轮和第二张紧滑轮安装在同一张紧滑轮支座上，所述张紧滑轮支座与张紧弹簧的一端连接或接触，张紧弹簧的另一端与外壳体连接或接触；上述张紧弹簧对张紧滑轮支座产生作用力，使绕在第一滑轮组上的第一拉线段和绕在第二滑轮组上的第二拉线段都一直保持张紧状态。在一具体方案中，上述张紧弹簧可采用扭力弹簧，张紧滑轮支座可转动安装在外壳体上，张紧弹簧的两端分别与张紧滑轮支座和外壳体接触。当然，张紧弹簧也可采用压缩弹簧或拉伸弹簧。由于第一拉线段和第二拉线段均保持张紧状态，因此在驱动电机的动力输出轴带动绕线轮转动的同时，拉线即可带动转轴及探头芯部同步转动，有效避免因绕线轮空转(空转是指如果拉线松弛，则绕线轮开始转动时没能通过拉线带动转轴及探头芯部转动的情况)而产生的传动误差。另外，经阴道容积探头经长期使用，拉线由于长期收到拉力的作用，往往会产生变形而增长，通过设置上述第一张紧弹簧及第二张紧弹簧、或设置张紧弹簧，可及时自动调整相对应的滑轮(即第一张紧滑轮和第二张紧滑轮)的位置，使拉线始终保持张紧状态，避免拉线因长度增加而松弛。In order to keep the pull wire in a better state of tension, and better keep the swing of the probe core in sync with the rotation of the power output shaft of the drive motor (usually the angular velocity of the rotating shaft is proportional to the angular velocity of the power output shaft), the above-mentioned transmission is preferred. The mechanism also includes a first tension spring and a second tension spring, the first pulley set includes a first tension pulley, the support of the first tension pulley is connected or contacts with one end of the first tension spring, and the second pulley set includes a first tension pulley Two tensioning pulleys, the support of the second tensioning pulley is connected or contacted with one end of the second tensioning spring, and the other end of the first tensioning spring and the other end of the second tensioning spring are connected or contacted with the outer shell; The above-mentioned first tensioning spring exerts a force on the support of the first tensioning pulley, so that the first cable segment wound on the first pulley block is kept in tension; the above-mentioned second tensioning spring exerts a force on the support of the second tensioning pulley. The support generates an active force, so that the second stay wire section wound on the second pulley block is always kept in tension. In a specific solution, the first tension spring and the second tension spring can be torsion springs, and the support of the first tension pulley and the support of the second tension pulley can be rotatably mounted on the outer casing. The two ends of the tensioning spring are respectively in contact with the support of the first tensioning pulley and the outer shell, and the two ends of the second tensioning spring are respectively in contact with the support of the second tensioning pulley and the outer shell. Of course, the first tension spring and the second tension spring can also be compression springs or tension springs. In another preferred solution, it is preferred that the above-mentioned transmission mechanism further includes a tension spring, the first pulley set includes a first tension pulley, the second pulley set includes a second tension pulley, and the first tension pulley and the second tension pulley are installed On the same tensioning pulley support, the tensioning pulley support is connected or in contact with one end of the tension spring, and the other end of the tension spring is connected or in contact with the outer shell; Active force keeps the first stay wire segment wound around the first pulley block and the second stay wire segment wound around the second pulley block all the time in tension. In a specific solution, the above-mentioned tension spring may be a torsion spring, the tension pulley support is rotatably mounted on the outer shell, and the two ends of the tension spring are respectively in contact with the tension pulley support and the outer shell. Of course, the tension spring can also be a compression spring or a tension spring. Since both the first wire section and the second wire section are kept in a tensioned state, when the power output shaft of the drive motor drives the reel to rotate, the wire can drive the shaft and the core of the probe to rotate synchronously, effectively avoiding the winding wheel Rotation (idling refers to the transmission error caused by the situation that if the cable is loose, the winding wheel fails to drive the rotating shaft and the core of the probe to rotate through the cable when it starts to rotate). In addition, after long-term use of the transvaginal volume probe, the pull wire will often deform and grow due to the long-term tension. By setting the above-mentioned first tension spring and second tension spring, or setting the tension spring, it can automatically Adjust the positions of the corresponding pulleys (i.e. the first tensioning pulley and the second tensioning pulley) to keep the stay wire in a tensioned state all the time, so as to avoid the stay wire from becoming loose due to the increase in length.

上述第一拉线、第二拉线、拉线均采用不易因受拉力作用而变形的线，如金属线。优选拉线是由多股金属丝绞合成的金属线。The above-mentioned first pull wire, second pull wire, and pull wire are all made of wires that are not easily deformed by tension, such as metal wires. Preferably the pull wire is a metal wire twisted from a plurality of metal wires.

本发明采用滑轮组和拉线构成传动机构，结构简单紧凑，易于组装，制造成本较低；通过驱动电机的动力输出轴的往复转动，使探头芯部绕转轴同步摆动，实现体扫扫描，运行稳定，确保探头芯部能够均匀、准确地采集图像数据。The present invention adopts a pulley block and a pull wire to form a transmission mechanism, which has a simple and compact structure, is easy to assemble, and has a low manufacturing cost; through the reciprocating rotation of the power output shaft of the drive motor, the core of the probe is synchronously swayed around the rotating shaft to realize body scanning and stable operation. Ensure that the probe core is able to acquire image data evenly and accurately.

附图说明Description of drawings

图1是本发明优选实施例1的结构示意图；Fig. 1 is the structural representation of preferred embodiment 1 of the present invention;

图2是本发明优选实施例1的局部结构示意图(示出探头芯部与第一拉线、第二拉线的连接)。Fig. 2 is a partial structural schematic diagram of the preferred embodiment 1 of the present invention (showing the connection between the probe core and the first pull wire and the second pull wire).

具体实施方式Detailed ways

实施例1Example 1

本实施例中，经阴道容积探头包括外壳体1、探头芯部2、转轴3、驱动电机4和传动机构，探头芯部2、驱动电机4和传动机构设于外壳体1中，转轴3可转动安装在外壳体1中，探头芯部2固定安装在转轴3上。In this embodiment, the transvaginal volume probe includes an outer shell 1, a probe core 2, a rotating shaft 3, a driving motor 4 and a transmission mechanism, the probe core 2, the driving motor 4 and a transmission mechanism are arranged in the outer shell 1, and the rotating shaft 3 can be It is rotatably installed in the outer casing 1 , and the probe core 2 is fixedly installed on the rotating shaft 3 .

传动机构包括绕线轮5、第一拉线6、用于导引第一拉线6的第一滑轮组、第二拉线7、用于导引第二拉线7的第二滑轮组、张紧弹簧8以及张紧滑轮支座9。绕线轮5固定安装在驱动电机4的动力输出轴10上。第一拉线6的两端分别与探头芯部2和绕线轮5固定连接，第二拉线7的两端分别与探头芯部2和绕线轮5固定连接，第一拉线6和第二拉线7分别处于探头芯部2的两侧。第一滑轮组包括第一转向滑轮11和第一张紧滑轮12，第二滑轮组包括第二转向滑轮13和第二张紧滑轮14。第一张紧滑轮12和第二张紧滑轮14均可转动安装在张紧滑轮支座9上；张紧弹簧8采用扭力弹簧，张紧滑轮支座9通过支座轴15可转动地安装在外壳体1上，张紧弹簧8套接在支座轴15上，张紧弹簧8的两端分别与张紧滑轮支座9和外壳体1接触；第一转向滑轮11和第二转向滑轮13均可转动地安装在支座轴15上。张紧弹簧8对张紧滑轮支座9产生作用力，使张紧滑轮支座9可自适应地绕支座轴15转动，从而使绕在第一滑轮组上的第一拉线6和绕在第二滑轮组上的第二拉线7都一直保持张紧状态。The transmission mechanism comprises a reel 5, a first backguy 6, a first pulley set for guiding the first backguy 6, a second backguy 7, a second pulley set for guiding the second backguy 7, a tension spring 8 and a tension spring 8. Tight pulley support 9. The reel 5 is fixedly mounted on the power output shaft 10 of the drive motor 4 . The two ends of the first backguy 6 are fixedly connected with the probe core 2 and the reel 5 respectively, and the two ends of the second backguy 7 are fixedly connected with the probe core 2 and the reel 5 respectively, and the first backguy 6 and the second backguy 7 are located on both sides of the probe core 2 respectively. The first pulley set includes a first diverting pulley 11 and a first tensioning pulley 12 , and the second pulley set includes a second diverting pulley 13 and a second tensioning pulley 14 . Both the first tension pulley 12 and the second tension pulley 14 can be rotatably installed on the tension pulley support 9; the tension spring 8 adopts a torsion spring, and the tension pulley support 9 is rotatably installed on On the outer casing 1, the tension spring 8 is sleeved on the support shaft 15, and the two ends of the tension spring 8 are respectively in contact with the tension pulley support 9 and the outer casing 1; the first diverting pulley 11 and the second diverting pulley 13 All can be rotatably installed on the support shaft 15. Tensioning spring 8 produces active force to tensioning pulley support 9, and tensioning pulley support 9 can rotate around support shaft 15 adaptively, thereby makes the first backguy 6 that is wound on the first pulley block and the first stay wire that is wound on the second The second backguy 7 on the two pulley blocks all keeps tensioned state all the time.

可以将第一拉线6的一端固定在绕线轮5上并在绕线轮5上缠绕若干圈后，再绕经第一滑轮组，并将其另一端固定连接到探头芯部2；同样，可以将第二拉线7的一端固定在绕线轮5上并在绕线轮5上缠绕若干圈后，再绕经第二滑轮组，并将其另一端固定连接到探头芯部2。One end of the first backguy 6 can be fixed on the winding wheel 5 and wound several times on the winding wheel 5, then winds through the first pulley block, and the other end is fixedly connected to the probe core 2; One end of the second pull wire 7 is fixed on the winding wheel 5 and wound several turns on the winding wheel 5 , then wound through the second pulley block, and the other end is fixedly connected to the probe core 2 .

上述第一拉线6、第二拉线7均采用由多股金属丝绞合成的金属线。Both the above-mentioned first pull wire 6 and the second pull wire 7 are metal wires twisted by multiple strands of metal wires.

在其他实施方案中，上述传动机构还包括第一张紧弹簧和第二张紧弹簧，第一滑轮组包括第一张紧滑轮，第一张紧滑轮的支座与第一张紧弹簧的一端连接或接触，第二滑轮组包括第二张紧滑轮，第二张紧滑轮的支座与第二张紧弹簧的一端连接或接触，第一张紧弹簧和第二张紧弹簧的另一端均与外壳体连接或接触；上述第一张紧弹簧对第一张紧滑轮的支座产生作用力，使绕在第一滑轮组上的第一拉线一直保持张紧状态；上述第二张紧弹簧对第二张紧滑轮的支座产生作用力，使绕在第二滑轮组上的第二拉线一直保持张紧状态。在一具体方案中，第一张紧弹簧和第二张紧弹簧采用扭力弹簧，第一张紧滑轮的支座和第二张紧滑轮的支座均可转动安装在外壳体上，第一张紧弹簧的两端分别与第一张紧滑轮的支座和外壳体接触，第二张紧弹簧的两端分别与第二张紧滑轮的支座和外壳体接触。当然，第一张紧弹簧和第二张紧弹簧也可采用压缩弹簧或拉伸弹簧。In other embodiments, the transmission mechanism further includes a first tension spring and a second tension spring, the first pulley set includes a first tension pulley, and the support of the first tension pulley is connected to one end of the first tension spring Or contact, the second pulley set includes a second tensioning pulley, the support of the second tensioning pulley is connected or contacted with one end of the second tensioning spring, and the other ends of the first tensioning spring and the second tensioning spring are connected with the housing Body connection or contact; the above-mentioned first tension spring exerts force on the support of the first tension pulley, so that the first stay wire wound on the first pulley block is always kept in tension; the above-mentioned second tension spring exerts a force on the second tension pulley. The support of the tensioning pulley produces an active force, so that the second stay wire wound on the second pulley block is always kept in tension. In a specific solution, the first tension spring and the second tension spring adopt torsion springs, the support of the first tension pulley and the support of the second tension pulley can be rotatably installed on the outer casing, and the first tension pulley The two ends of the tension spring are respectively in contact with the support of the first tensioning pulley and the outer casing, and the two ends of the second tension spring are respectively in contact with the support of the second tensioning pulley and the outer casing. Of course, the first tension spring and the second tension spring can also be compression springs or tension springs.

实施例2Example 2

本实施例与实施例1的区别在于，采用一根拉线替代实施例1中的第一拉线和第二拉线。拉线的两端均与转轴固定连接，拉线的中段缠绕在绕线轮上；拉线一端至绕线轮之间的一段拉线构成第一拉线段(相当于实施例1中的第一拉线)，第一拉线段与第一滑轮组配合；拉线另一端至绕线轮之间的一段拉线构成第二拉线段(相当于实施例1中的第二拉线)，第二拉线段与第二滑轮组配合。也就是说，上述拉线以绕线轮为界，分成两段，这两段拉线分别与第一滑轮组和第二滑轮组配合。拉线均同样采用由多股金属丝绞合成的金属线。The difference between this embodiment and embodiment 1 is that one pull wire is used instead of the first pull wire and the second pull wire in embodiment 1. Both ends of the backguy are fixedly connected to the rotating shaft, and the middle section of the backguy is wound on the reel; a section of the backguy between one end of the backguy and the reel constitutes the first backguy segment (equivalent to the first backguy in Embodiment 1), the second A backguy section cooperates with the first pulley block; A section of backguy wire between the other end of the backguy wire and the reel constitutes the second backguy section (equivalent to the second backguy in embodiment 1), and the second backguy section cooperates with the second pulley block. That is to say, the above-mentioned backguy is divided into two sections with the winding wheel as the boundary, and these two sections of backguy cooperate with the first pulley block and the second pulley block respectively. The backguy all adopts the metal wire that is twisted into by multi-strand metal wire in the same way.

本实施例的其余结构与实施例1相同。The rest of the structure of this embodiment is the same as that of Embodiment 1.

Claims (10)

1. a transvaginal volume is popped one's head in, comprise shell body, probe core, rotating shaft, drive motors and drive mechanism, probe core, drive motors and drive mechanism are located in the shell body, rotating shaft is rotatable to be installed in the shell body, the probe core is fixedly mounted in the rotating shaft, it is characterized in that: second assembly pulley that described drive mechanism comprises reel, first backguy, is used to guide first assembly pulley of first backguy, second backguy and is used to guide second backguy; Reel is fixedly mounted on the power output shaft of drive motors; One end of first backguy is fixedlyed connected with reel, and the other end of first backguy is connected with rotating shaft or probe core; One end of second backguy is fixedlyed connected with reel, and the other end of second backguy is connected with rotating shaft or probe core.
2. transvaginal volume probe according to claim 1, it is characterized in that: described drive mechanism also comprises first tensioning spring and second tensioning spring, first assembly pulley comprises first tension pulley block, the bearing of first tension pulley block is connected with an end of first tensioning spring or contacts, second assembly pulley comprises second tension pulley block, the bearing of second tension pulley block is connected with an end of second tensioning spring or contacts, and the other end of the other end of first tensioning spring and second tensioning spring all is connected with shell body or contacts.
3. transvaginal volume probe according to claim 2, it is characterized in that: described first tensioning spring and second tensioning spring all adopt torque spring, the bearing of the bearing of first tension pulley block and second tension pulley block is all rotatable to be installed on the shell body, the two ends of first tensioning spring contact with shell body with the bearing of first tension pulley block respectively, and the two ends of second tensioning spring contact with shell body with the bearing of second tension pulley block respectively.
4. transvaginal volume probe according to claim 1, it is characterized in that: described drive mechanism also comprises tensioning spring, first assembly pulley comprises first tension pulley block, second assembly pulley comprises second tension pulley block, first tension pulley block and second tension pulley block are installed on the same tension pulley block bearing, described tension pulley block bearing is connected with an end of tensioning spring or contacts, and the other end of tensioning spring is connected with shell body or contacts.
5. transvaginal volume probe according to claim 4, it is characterized in that: described tensioning spring adopts torque spring, and the tension pulley block bearing is rotatable to be installed on the shell body, and the two ends of tensioning spring contact with shell body with the tension pulley block bearing respectively.
6. a transvaginal volume is popped one's head in, comprise shell body, the probe core, rotating shaft, drive motors and drive mechanism, the probe core, drive motors and drive mechanism are located in the shell body, rotating shaft is rotatable to be installed in the shell body, the probe core is fixedly mounted in the rotating shaft, it is characterized in that: described drive mechanism comprises reel, backguy, be used to guide first assembly pulley and second assembly pulley of backguy, reel is fixedly mounted on the power output shaft of drive motors, all fixedly connected with rotating shaft or probe core in the two ends of backguy, the stage casing of backguy is wrapped on the reel, backguy one end to one section backguy between the reel constitutes the first backguy section, the first backguy section cooperates with first assembly pulley, the backguy other end constitutes the second backguy section to one section backguy between the reel, and the second backguy section cooperates with second assembly pulley.
7. transvaginal volume probe according to claim 6, it is characterized in that: described drive mechanism also comprises first tensioning spring and second tensioning spring, first assembly pulley comprises first tension pulley block, the bearing of first tension pulley block is connected with an end of first tensioning spring or contacts, second assembly pulley comprises second tension pulley block, the bearing of second tension pulley block is connected with an end of second tensioning spring or contacts, and the other end of the other end of first tensioning spring and second tensioning spring all is connected with shell body or contacts.
8. transvaginal volume probe according to claim 7, it is characterized in that: described first tensioning spring and second tensioning spring all adopt torque spring, the bearing of the bearing of first tension pulley block and second tension pulley block is all rotatable to be installed on the shell body, the two ends of first tensioning spring contact with shell body with the bearing of first tension pulley block respectively, and the two ends of second tensioning spring contact with shell body with the bearing of second tension pulley block respectively.
9. transvaginal volume probe according to claim 6, it is characterized in that: described drive mechanism also comprises tensioning spring, first assembly pulley comprises first tension pulley block, second assembly pulley comprises second tension pulley block, first tension pulley block and second tension pulley block are installed on the same tension pulley block bearing, described tension pulley block bearing is connected with an end of tensioning spring or contacts, and the other end of tensioning spring is connected with shell body or contacts.
10. transvaginal volume probe according to claim 9, it is characterized in that: described tensioning spring adopts torque spring, and the tension pulley block bearing is rotatable to be installed on the shell body, and the two ends of tensioning spring contact with shell body with the tension pulley block bearing respectively.
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