WO2020047850A1 - 具有耦合液补偿功能的超声探头 - Google Patents
具有耦合液补偿功能的超声探头 Download PDFInfo
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- WO2020047850A1 WO2020047850A1 PCT/CN2018/104632 CN2018104632W WO2020047850A1 WO 2020047850 A1 WO2020047850 A1 WO 2020047850A1 CN 2018104632 W CN2018104632 W CN 2018104632W WO 2020047850 A1 WO2020047850 A1 WO 2020047850A1
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- compensation
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- ultrasonic probe
- hose
- compensating
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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
Definitions
- the present application relates to medical instruments, and in particular, to a probe for an ultrasonic device.
- Ultrasound imaging equipment is a device that uses ultrasound for detection and imaging, and is widely used in medical diagnostics, research, and other fields.
- An ultrasonic probe is an important part of an ultrasonic device. It is a structure that uses the piezoelectric effect of materials to realize the conversion of electrical energy and sound energy.
- the acoustic head unit can transmit ultrasonic waves and receive echoes with information about human tissues, thereby imaging human tissues to construct an image of human tissues.
- the ultrasonic probe further includes a base and a head housing, the base and the head housing surround a closed space, and the head is housed in the closed space.
- the closed space is filled with coupling fluid, and the role of the coupling fluid is to fill the gap between the acoustic head and the acoustic head shell to conduct ultrasonic waves.
- the acoustic head Because the coupling fluid in the confined space will expand and contract with the change of temperature, and in some ultrasonic probes, such as 3D probes, the acoustic head needs to swing in the confined space. When the acoustic head is swung, the coupling fluid in the enclosed space generates fluctuating pressure. Therefore, a liquid compensation structure is provided in some ultrasound probes.
- the liquid compensation structure is usually an external hose, which communicates with the enclosed space, and the coupling fluid is contained in the hose. When the coupling hydraulic pressure changes in the confined space, buffering can be achieved through a hose communicating with the confined space.
- the coupling fluid is also filled in the hose, the amount of coupling fluid used in the entire ultrasound probe will increase, increasing the weight of the entire ultrasound probe, which is not conducive to the lightweight design of the ultrasound probe.
- the volume ratio of the volume of the external hose used to compensate for thermal expansion and contraction to the volume filled in the closed space is approximately 1: 4, which has caused an ultrasound probe
- the overall volume is too large, which is not conducive to the miniaturization of the ultrasound probe.
- the invention mainly provides an ultrasonic probe with a coupling liquid compensation function, which is used to realize the pressure compensation of the coupling liquid of the ultrasonic probe, while reducing the weight and volume of the ultrasonic probe.
- an embodiment provides an ultrasonic probe with a coupling fluid compensation function
- the acoustic head shell, a base and a compensator are included.
- the acoustic head shell and the base are enclosed to form a closed receiving cavity.
- the compensator has a compensating cavity.
- the compensating cavity has a gas inlet and outlet.
- the compensator extends.
- the compensating cavity is located in the accommodating cavity and sealed and separated from each other, so that at least a part of the outer wall of the compensating member and the cavity wall of the accommodating cavity together form a storage space for the coupling liquid, the gas
- the inlet and the outlet are open and communicate with a space isolated from the accommodating cavity, so that the gas in the compensation cavity can move in the compensation cavity and the space, and the compensation member is made of at least partially deformable flexible material for The compensation cavity can be changed in volume with the pressure of the coupling fluid.
- the compensation member is fixedly installed on the base, and extends from the base into the accommodation cavity.
- the base has a mounting port, and the compensation member is fixed in the mounting port.
- a pressure block having a gas inlet / outlet channel is further included, the pressure block fixes the compensation member on the base, and the gas inlet / outlet channel of the pressure block is in communication with the compensation cavity of the compensation member.
- the pressure block is plugged into the compensation member from the gas inlet and outlet, and the compensation member is tightly fixed on the mouth wall of the installation port.
- the gas inlet and outlet of the compensation member is provided with an outward flange, and the pressing block fixes the flange on the base.
- the compensating member and the mouth wall of the installation mouth are fixed by mechanical compression or adhesion.
- the compensation member is a hose, one end of the hose is closed, and the gas inlet and outlet are provided at the other end, and the closed end of the hose extends into the accommodation cavity.
- a support rod is further included, and the support rod extends into the hose and is disposed along the extension direction of the hose to prevent the inner walls on both sides of the hose from sticking to each other.
- the hose has a circular or square cross section.
- the compensating member extends into the accommodating cavity, that is, is built in the accommodating cavity, so that the compensating cavities are located in the accommodating cavity and sealed and separated from each other.
- the gas inlet and outlet of the compensation chamber is open so that it can communicate with the outside and ensure that the gas in the compensation chamber has the same pressure as the outside.
- the compensating member is made at least partially of a deformable flexible material, and the coupling fluid is filled in the accommodating cavity, and also acts on the outer wall of the compensating member's flexible material. When the coupling hydraulic pressure changes, the compensating member can be made flexible The material deforms, thereby adjusting the pressure of the coupling fluid by changing the storage space of the coupling fluid.
- the compensating element is built into the accommodating cavity, and the compensating element itself occupies a part of the space of the accommodating cavity, so the filling amount of the coupling fluid can be reduced, and the built-in accommodating cavity of the compensating element will not cause the overall volume of the probe to increase, so that the ultrasound probe Smaller, more conducive to miniaturization and lightweight design.
- FIG. 1 is a cross-sectional view of an ultrasound probe in an embodiment of the present application
- FIG. 2 is a schematic diagram of a hose fixing structure in an embodiment of the present application.
- 3 and 4 are schematic cross-sectional views of a hose, a base, and a pressing block according to an embodiment of the present application;
- FIG. 5 is a cross-sectional view of an ultrasound probe in an embodiment of the present application.
- connection and “connection” in this application include direct and indirect connections (connections) unless otherwise specified.
- This embodiment provides an ultrasound probe with a coupling fluid compensation function, which belongs to a type of ultrasound equipment, and is used to assist the ultrasound equipment to perform imaging by sending and receiving ultrasound signals.
- a body surface 3D mechanical probe is taken as an example for description.
- the compensation structure shown in this embodiment can also be applied to other ultrasound probes that require coupled fluid compensation.
- the ultrasonic probe includes an acoustic head housing 1, a base 2, and a compensation member 3.
- the acoustic head shell 1 (also referred to as a sound window) is used to close the acoustic head, and can also be used as a part of the ultrasound probe in contact with human skin.
- the acoustic head shell 1 and the base 2 are enclosed to form a closed receiving cavity 11.
- the accommodating cavity 11 is used for storing coupling fluid.
- An acoustic head (not shown in FIG. 1) is installed in the accommodating cavity 11, and can be set to be swingable or fixed in the accommodating cavity 11 according to requirements.
- the compensation member 3 has a compensation cavity 31, and the compensation cavity 31 has a gas inlet and outlet 32.
- the gas inlet and outlet 32 is used for air in and out when the volume of the compensation cavity 31 changes.
- the compensating member 3 extends into the accommodating cavity 11 so that the compensating cavity 31 is located in the accommodating cavity 11 and sealed and separated from each other.
- the outer wall of the compensating member 3 and the cavity wall of the accommodating cavity 11 together form a coupling liquid storage space, that is, at least a part of the outer wall of the compensating member 3 serves as a part of the coupling liquid storage space.
- the gas inlet and outlet 32 is open and communicates with a space isolated from the accommodating chamber 11.
- the space may be the external atmospheric environment, that is, the gas inlet and outlet 32 of the compensation member 3 is directly communicated with the external atmospheric environment. Or the space may be a certain space formed inside the probe, for example, a cavity surrounded by the probe housing.
- the probe housing referred to here includes the above-mentioned acoustic head housing 1 and other housing parts, such as the housing of the probe holding part and the like.
- the compensation member 3 is at least partially made of a deformable flexible material, so that the compensation cavity 31 can interact with the coupling fluid when the pressure of the coupling fluid changes, and the coupling hydraulic pressure is strengthened by changing the volume of the compensation cavity 31. Compensation.
- the coupling liquid is filled in the accommodating cavity 11 and also acts on the outer wall of the flexible material of the compensating member 3. When the coupling fluid pressure changes, it can deform the flexible material of the compensating member 3, so as to adjust the pressure of the coupling fluid by changing the storage space of the coupling fluid.
- the flexible material of the compensation member 3 will be deformed, the volume of the compensation cavity 31 will be reduced, and the coupling fluid will be small. Storage space becomes larger. On the contrary, the volume of the compensation cavity 31 may be increased, and the storage space of the coupling liquid may be reduced.
- the compensating member 3 is built into the accommodating cavity 11. Since the compensating member 3 itself occupies a part of the space of the accommodating cavity 11, the filling amount of the coupling liquid can be reduced. In addition, the built-in accommodating cavity 11 of the compensating member 3 will not cause the overall volume of the probe to increase, making the ultrasound probe more compact and more conducive to miniaturization and lightweight design.
- the acoustic head shell 1 may be composed of a plurality of components or may be integrally formed.
- the base 2 may be formed by combining a plurality of components or integrally formed.
- the compensating member 3 can be inserted into the accommodating cavity 11 from the base 2, the acoustic head shell 1 or other places.
- the compensating member 3 is fixed on the base 2 and protrudes from the base 2 into the accommodation cavity 11.
- the base 2 has a mounting opening 21, and the compensation member 3 is fixed in the mounting opening 21.
- the compensation member 3 can also be fixed to the base 2 by other mounting methods.
- a pressure block 4 having a gas inlet and outlet passage 41 is further included.
- the pressure block 4 fixes the compensation member 3 on the base 2, and the gas inlet and outlet passage 41 and the compensation member of the pressure block 4
- the compensation cavity 31 of 3 communicates, so that the compensation cavity 31 communicates with the outside.
- the pressing block 4 is inserted into the compensating member 3 from the gas inlet and outlet 32, and the compensating member 3 is compressed. It is fixed to the wall of the mounting port 21. That is, the pressing block 4 fixes the compensating member 3 to the mounting port 21 by an interference fit.
- the clamping area formed by the outer wall of the pressure block 4 and the wall of the mounting port 21 for clamping the compensating member 3 may have a longer distance, thereby increasing the clamping area and improving the firmness. .
- the gas inlet and outlet 32 of the compensating member 3 is provided with an outward flange 33, and the pressing block 4 fixes the flange 33 on the base 2.
- the specific fixing member may be a screw 5 or a bolt.
- the compensating member 3 may also be mechanically pressed or adhesively fixed to the wall of the mounting port 21. Alternatively, fix it by other fixing methods, such as snap-on, magnetic adsorption, welding, etc.
- Such a flexible material having elasticity used by the compensating member 3 may include materials such as rubber, silica gel, and the like.
- the compensating member 3 may be wholly or partly made of a flexible material having elasticity, and may have various shapes.
- the compensating member 3 may adopt a tubular, capsule or other shape structure.
- the other shape includes a combination of various shapes.
- the compensation member 3 is a hose. One end of the hose is closed, and the gas inlet and outlet 32 are provided at the other end. The closed end of the hose extends into the receiving cavity 11 so as to seal and separate the receiving cavity 11 from the compensation cavity 31.
- the compensation member 3 (such as a hose) has a circular or square cross section.
- the circle includes a perfect circle, an oval, and various other circular shapes.
- the square includes a square, rectangle, or other square shape.
- the compensation member 3 (such as a hose) can also have a cross section of other shapes, such as a pentagon, a hexagon, or even a cross section of an irregular shape (informal shape).
- the compensating element 3 (such as a hose) can be made to have a substantially uniform wall thickness, so that the compensating element 3 and the compensating element 3 can be better deformed under the coupled hydraulic pressure.
- the thickness of the wall of the mounting opening 21 on the base 2 is approximately equal to the thickness of the gas inlet / outlet passage 41 on the pressure block 4, so that the compensation member 3 (hose) can be clamped more securely. Ensure the assembly reliability of the compensation piece 3 (hose). Further, the distance between the inside of the mouth wall of the mounting opening 21 on the base 2 and the outside of the pressure block 4 can be set to be slightly less than or equal to half the thickness of the hose, that is, the compression amount of the hose during assembly must be greater than or equal to the thickness More than half, so as to better ensure the firmness of the hose assembly.
- another ultrasonic probe with a coupling fluid compensation function is provided.
- an intracavity 3D mechanical probe is taken as an example for description.
- the compensation structure shown in this embodiment can also be applied to other ultrasound probes that need to perform coupling fluid compensation.
- the difference between the ultrasonic probe shown in this embodiment and the structure shown in the first embodiment is as follows: Please refer to FIG. 5, the 3D mechanical probe in the cavity has a longer acoustic head shell 1 in structure.
- the acoustic head shell 1 and the base 2 can form a narrow and tightly-type accommodating cavity 11.
- the compensation member 3 is installed in the narrow receiving cavity 11.
- the compensation member 3 can be fixed according to the structure shown in FIG. 2 in the first embodiment.
- other methods can also be used for fixing.
- other structures of the ultrasound probe shown in the second embodiment such as the structure of the compensating element and the fixing manner of the compensating element, can be implemented by using but not limited to the structure shown in the first embodiment.
- the ultrasonic probe further includes a support rod 5 that extends into the hose and is disposed along the extension direction of the hose to prevent the inner walls of the two sides of the hose from sticking to each other. sticky.
- the supporting rod 5 may be fixed or integrally formed with the pressing block 4 described above, or may be located on other structures.
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Abstract
一种具有耦合液补偿功能的超声探头，其补偿件（3）内置在容置腔（11）内，补偿腔（31）位于容置腔（11）内并相互密封隔开。补偿腔（31）的气体进出口（32）敞开设置，使其可与外部连通，保证补偿腔（31）内气体具有与外部相同的压强。该补偿件（3）至少部分采用可变形的柔性材料制成，该耦合液被填充在容置腔（11）内，同时也作用于补偿件（3）柔性材料的外壁，当耦合液压强发生变化时，可促使补偿件（3）的柔性材料变形，从而通过改变耦合液的存储空间来调整耦合液的压强。将补偿件（3）内置到容置腔（11），补偿件（3）本身占据了容置腔（11）一部分空间，由此可减少耦合液的填充量，而且补偿件（3）内置容置腔（11）不会导致探头的整体体积增加，使超声探头更小巧，更利于小型化设计。
Description
本申请涉及医疗器械，具体涉及一种超声设备的探头。
超声成像设备是一种利用超声波进行检测并成像的设备，其被广泛应用于医学诊断、研究等领域。超声探头是超声设备的重要组成部分，其是利用材料的压电效应实现电能、声能转换的一种结构。
通常的超声探头内部一般有作为发射和接收信号的声头单元。该声头单元可以发射超声波并接收带有人体组织信息的回波，因而对人体组织进行成像，从而构建人体组织的图像。该超声探头还包括基座和声头壳，该基座和声头壳围成一个密闭空间，该声头被容置在密闭空间内。密闭空间中充满耦合液，耦合液的作用是填充声头和声头壳之间的间隙以传导超声波。
由于，密闭空间内耦合液会随温度的变化发生热胀冷缩，而且在一些超声探头，例如3D探头中，声头需要在密闭空间内摆动。当声头摆动时，密闭空间中耦合液产生波动压力。因此在某些超声探头设置有液体补偿结构。该液体补偿结构通常是外置的软管，该软管与密闭空间相通，且软管内装有耦合液。当密闭空间内耦合液压强产生变化时，可通过与密闭空间连通的软管来实现缓冲。
但是，由于软管内也填充耦合液，因此整个超声探头耦合液的使用量将增加，增加整个超声探头的重量，不利于超声探头轻量化设计。而且经过分析计算，要想获得较好的补偿效果，外置软管部分用于补偿热胀冷缩的体积与密闭空间内填充的体积的体积比大致为1:4，这就造成了超声探头整体体积的过大，不利于超声探头的小型化。
本发明主要提供一种具有耦合液补偿功能的超声探头，用以实现对超声探头耦合液的压强补偿，同时减小超声探头的重量和体积。
根据本申请的一方面，一种实施例中提供一种具有耦合液补偿功能的超声探头，
包括声头壳、基座和补偿件，所述声头壳与基座围合形成密闭的容置腔，所述补偿件具有补偿腔，所述补偿腔具有气体进出口，所述补偿件伸入到容置腔内，所述补偿腔位于容置腔内并相互密封隔开，使所述补偿件的至少一部分外壁与容置腔的腔壁共同围成耦合液的存储空间，所述气体进出口敞开设置并连通一个与容置腔隔绝的空间，使所述补偿腔内气体能够在补偿腔和所述空间内移动，所述补偿件至少部分采用可变形的柔性材料制成，用以使补偿腔能够随耦合液的压强变化而改变容积大小。
作为所述超声探头的进一步改进，所述补偿件固定安装在基座上，并自基座向容置腔内部伸入。
作为所述超声探头的进一步改进，所述基座具有安装口，所述补偿件被固定在安装口内。
作为所述超声探头的进一步改进，还包括具有气体进出通道的压块，所述压块将补偿件固定在基座上，所述压块的气体进出通道与补偿件的补偿腔连通。
作为所述超声探头的进一步改进，所述压块从气体进出口塞入补偿件内，并将所述补偿件压紧固定在安装口的口壁上。
作为所述超声探头的进一步改进，所述补偿件的气体进出口设置有向外的翻边，所述压块将所述翻边固定在基座上。
作为所述超声探头的进一步改进，所述补偿件与安装口的口壁通过机械压合或粘接固定。
作为所述超声探头的进一步改进，所述补偿件为软管，所述软管一端封闭，另一端设置所述气体进出口，所述软管封闭的一端伸入到所述容置腔内。
作为所述超声探头的进一步改进，还包括支撑杆，所述支撑杆伸入软管内并沿软管延伸方向设置，用以避免软管两侧内壁相互粘黏。
作为所述超声探头的进一步改进，所述软管具有圆形或方形的截面。
依据上述实施例的超声探头，其补偿件伸入到容置腔内，即内置在容置腔内，使补偿腔位于容置腔内并相互密封隔开。补偿腔的气体进出口敞开设置，使其可与外部连通，保证补偿腔内气体具有与外部相同的压强。该补偿件至少部分采用可变形的柔性材料制成，该耦合液被填充在容置腔内，同时也作用于补偿件柔性材料的外壁，当耦合液压强发生变化时，可促使补偿件的柔性材料变形，从而通过改变耦合液的存储空间来调整耦合液的压强。本方案将补偿件内置到容置腔，补偿件本身占据了容置腔一部分空间，因此可减少耦合液的填充量，而且补偿件内置容置腔不会导致探头的整体体积增加，使超声探头更小巧，更利于小型化和轻量化设计。
图1为本申请一种实施例中超声探头的剖视图；
图2为本申请一种实施例中软管固定结构的示意图；
图3和4为本申请一种实施例中软管、基座和压块的横截面示意图；
图5为本申请一种实施例中超声探头的剖视图。
具体实施方式
下面通过具体实施方式结合附图对本发明作进一步详细说明。其中不同实施方式中类似元件采用了相关联的类似的元件标号。在以下的实施方式中，很多细节描述是为了使得本申请能被更好的理解。然而，本领域技术人员可以毫不费力的认识到，其中部分特征在不同情况下是可以省略的，或者可以由其他元件、材料、方法所替代。在某些情况下，本申请相关的一些操作并没有在说明书中显示或者描述，这是为了避免本申请的核心部分被过多的描述所淹没，而对于本领域技术人员而言，详细描述这些相关操作并不是必要的，他们根据说明书中的描述以及本领域的一般技术知识即可完整了解相关操作。
另外，说明书中所描述的特点、操作或者特征可以以任意适当的方式结合形成各种实施方式。同时，方法描述中的各步骤或者动作也可以按照本领域技术人员所能显而易见的方式进行顺序调换或调整。因此，说明书和附图中的各种顺序只是为了清楚描述某一个实施例，并不意味着是必须的顺序，除非另有说明其中某个顺序是必须遵循的。
本文中为部件所编序号本身，例如“第一”、“第二”等，仅用于区分所描述的对象，不具有任何顺序或技术含义。而本申请所说“连接”、“联接”，如无特别说明，均包括直接和间接连接（联接）。
本实施例提供一种具有耦合液补偿功能的超声探头，其属于超声设备的一种，用以通过发出和接收超声波信号辅助超声设备进行成像。以下具体以一种体表3D机械探头为例进行说明，当然，本实施例所示补偿结构也可应用于其他需要进行耦合液补偿的超声探头之中。
请参考图1，一种实施例中，该超声探头包括声头壳1、基座2和补偿件3。
该声头壳1（也可称为声窗）用于对声头进行封闭，同时也可作为超声探头与人体皮肤接触的部分。该声头壳1与基座2围合形成密闭的容置腔11。该容置腔11用于存放耦合液。声头（图1中未示出）安装在该容置腔11内，其可根据需要设置为可在容置腔11内摆动或固定不动。
该补偿件3具有补偿腔31，该补偿腔31具有气体进出口32，该气体进出口32用于在补偿腔31体积发生变化时空气的进出。该补偿件3伸入到容置腔11内，使补偿腔31位于容置腔11内并相互密封隔开。该补偿件3的外壁与容置腔11的腔壁共同围成耦合液存储空间，即补偿件3的至少一部分外壁作为耦合液存储空间的一部分。该气体进出口32敞开设置并连通一个与容置腔11隔绝的空间，在容置腔11内耦合液压强变化时，该补偿腔31内气体能够在补偿腔31和该空间内移动，从而调整补偿腔31内的压强，以便其适应容置腔11内耦合液的变化。该空间可以是外界大气环境，即该补偿件3的气体进出口32直接与外界大气环境连通。或者该空间也可以是探头内部所形成的某一个空间，例如，由探头壳体围成的一个腔体。这里所说的探头壳体包括上述的声头壳1以及其他壳体部分，例如探头握持部分的壳体等。
其中，该补偿件3至少部分采用可变形的柔性材料制成，用以使补偿腔31能够在耦合液的压强变化时与耦合液相互作用，通过改变补偿腔31的容积大小来对耦合液压强进行补偿。具体地，该耦合液被填充在容置腔11内，同时也作用于补偿件3柔性材料的外壁。当耦合液压力发生变化时，其可使补偿件3的柔性材料变形，从而通过改变耦合液的存储空间来调整耦合液的压强。例如，当耦合液在热胀冷缩作用或由于声头摆动所产生的波动压力的作用下压强升高，则将促使补偿件3的柔性材料变形，使补偿腔31体积变小，而耦合液的存储空间变大。反之，则可能使补偿腔31的体积变大，使耦合液的存储空间变小。
本方案将补偿件3内置到容置腔11，由于补偿件3本身占据了容置腔11一部分空间，因此可减少耦合液的填充量。而且补偿件3内置容置腔11不会导致探头的整体体积增加，使超声探头更小巧，更利于小型化和轻量化设计。
该声头壳1可由多个部件组合而成，也可以一体成型。同样，该基座2也可由多个部件组合而成或者一体成型。该补偿件3可以从基座2、声头壳1或者其他地方伸入到容置腔11内。
请参考图1，一种实施例中，补偿件3固定安装在基座2上，并自基座2向容置腔11内部伸出。
进一步地，请继续参考图1，一种实施例中，该基座2具有安装口21，该补偿件3被固定在安装口21内。当然，除了固定在安装口21这种方式，该补偿件3也可以通过其他安装方式固定到基座2上。
如图1所示，一种实施例中，还包括具有气体进出通道41的压块4，该压块4将补偿件3固定在基座2上，压块4的气体进出通道41与补偿件3的补偿腔31连通，从而使补偿腔31与外部连通。
压块4对补偿件3的固定可以有很多方式，例如，请参考图1，一种实施例中，该压块4从气体进出口32塞入补偿件3内，并将补偿件3压紧固定在安装口21的口壁上。即，压块4通过过盈配合将补偿件3固定到安装口21处。为保证装配的可靠性，压块4的外壁与安装口21的口壁所形成的用来夹紧补偿件3的夹紧区域可以具有较长的距离，从而增加夹紧作用面积，提高牢固性。
或者，作为另一种示例，请参考图2，补偿件3的气体进出口32设置有向外的翻边33，该压块4将翻边33固定在基座2上。具体的固定件可以采用螺钉5或螺栓。
除此之外，在其他实施例中，该补偿件3还可以与安装口21的口壁机械压合或粘接固定。或者，采用其他固定方式进行固定，例如卡接、磁性吸附、焊接等。
进一步地，补偿件3所采用的这种具有弹性的柔性材料可以包括橡胶、硅胶等材料。该补偿件3可以全部或部分采用具有弹性的柔性材料制成，其可以具有各种形状，例如，补偿件3可采用管状、囊状或其他形状结构。该其他形状包括各种形状的组合。只要保证该柔性材料至少部分位于容置腔11内并与耦合液直接接触，从而使得耦合液在压强变化时可以与柔性材料相互作用上，使柔性材料变形，即可完成对耦合液的压强变化进行补偿。
请参考图1，一种实施例中，该补偿件3为软管。软管一端封闭，另一端设置气体进出口32。软管封闭的一端伸入到容置腔11内，以便将容置腔11与补偿腔31密封隔开。
请参考图3和4，一些实施例中，该补偿件3（如软管）具有圆形或方形的截面。该圆形包括正圆形、椭圆形以及其他各类圆形形状。该方形包括正方形、长方形或其他方形形状。当然，除此之外，该补偿件3（如软管）还可具有其他形状的截面，例如五边形、六边形，甚至还可以是异形（非正规形状）的横截面。同时，可使得补偿件3（如软管）大体上具有均匀的壁厚，以便与补偿件3能够更好地在耦合液压强下的变形。
请参考图3，一些实施例中，基座2上安装口21的口壁厚度与压块4上气体进出通道41的厚度大致相等，从而可以更稳固地夹紧补偿件3（软管），保证补偿件3（软管）的装配可靠性。进一步地，还可使基座2上安装口21的口壁内侧与压块4外侧的间距设置为略小于或等于软管厚度的一半，即软管装配时压缩量需大于或等于软管厚度的一半以上，从而更好的保证软管装配的牢固性。
一种实施例中提供了另一种具有耦合液补偿功能的超声探头，以下具体以一种腔内3D机械探头为例进行说明。同样，本实施例所示补偿结构也可应用于其他需要进行耦合液补偿的超声探头之中。
本实施例所示超声探头与实施例一所示结构的区别在于：请参考图5，该腔内3D机械探头在结构上存在较长的声头壳1。该声头壳1与基座2可形成一个狭长的密闭型容置腔11。该补偿件3安装在该狭长的容置腔11内。补偿件3可按照实施例一中图2所示结构进行固定。当然，也可沿用其他方式进行固定。总之，本实施例二所示超声探头的其他结构，例如补偿件结构、补偿件的固定方式等，可采用但并不限于以上实施例一所示结构进行实现。
需要说明的是，由于本实施例二中容置腔11为狭长型，因此，相应的补偿件3（如软管）也比较长，进而导致补偿件3内部相对的两侧侧壁容易粘接。对此，请参考图5，在一种实施例，该超声探头还包括支撑杆5，该支撑杆5伸入软管内并沿软管延伸方向设置，用以避免软管两侧内壁相互粘黏。该支撑杆5可以与上述压块4固定或一体成型，也可以位于其他结构上。
以上应用了具体个例对本发明进行阐述，只是用于帮助理解本发明，并不用以限制本发明。对于本领域的一般技术人员，依据本发明的思想，可以对上述具体实施方式进行变化。
Claims (10)
- 一种具有耦合液补偿功能的超声探头,其特征在于，包括声头壳、基座和补偿件，所述声头壳与基座围合形成密闭的容置腔，所述补偿件具有补偿腔，所述补偿腔具有气体进出口，所述补偿件伸入到容置腔内，所述补偿腔位于容置腔内并相互密封隔开，使所述补偿件的至少一部分外壁与容置腔的腔壁共同围成耦合液的存储空间，所述气体进出口敞开设置并连通一个与容置腔隔绝的空间，使所述补偿腔内气体能够在补偿腔和所述空间内移动，所述补偿件至少部分采用可变形的柔性材料制成，用以使补偿腔能够随耦合液的压强变化而改变容积大小。
- 如权利要求1所述的超声探头，其特征在于，所述补偿件固定安装在基座上，并自基座向容置腔内部伸入。
- 如权利要求1或2所述的超声探头，其特征在于，所述基座具有安装口，所述补偿件被固定在安装口内。
- 如权利要求3所述的超声探头，其特征在于，还包括具有气体进出通道的压块，所述压块将补偿件固定在基座上，所述压块的气体进出通道与补偿件的补偿腔连通。
- 如权利要求4所述的超声探头，其特征在于，所述压块从气体进出口塞入补偿件内，并将所述补偿件压紧固定在安装口的口壁上。
- 如权利要求4或5所述的超声探头，其特征在于，所述补偿件的气体进出口设置有向外的翻边，所述压块将所述翻边固定在基座上。
- 如权利要求3所述的超声探头，其特征在于，所述补偿件与安装口的口壁通过机械压合或粘接固定。
- 如权利要求1至7中任一项所述的超声探头，其特征在于，所述补偿件为软管，所述软管一端封闭，另一端设置所述气体进出口，所述软管封闭的一端伸入到所述容置腔内。
- 如权利要求8所述的超声探头，其特征在于，还包括支撑杆，所述支撑杆伸入软管内并沿软管延伸方向设置，用以避免软管两侧内壁相互粘黏。
- 如权利要求8或9所述的超声探头，其特征在于，所述软管具有圆形或方形的截面。
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