Ultrasonic endoscope body and ultrasonic endoscope equipment

Abstract

The utility model discloses an ultrasonic endoscope body and ultrasonic endoscope equipment, and relates to the technical field of medical instruments, the ultrasonic endoscope body comprises an ultrasonic endoscope body head end, an ultrasonic signal transmission line, an endoscope signal transmission line and an isolation device; wherein the head end of the ultrasonic endoscope body is connected with the ultrasonic host system through an ultrasonic signal transmission line; the head end of the ultrasonic endoscope body is connected with the endoscope host system through an endoscope signal transmission line; a first end of the isolation device is connected with the ultrasonic signal transmission line, a second end of the isolation device is connected with the endoscope signal transmission line, and a capacitor is arranged in the isolation device; by arranging the capacitor in the isolation device between the ultrasonic signal transmission line and the endoscope signal transmission line, the voltage required to be borne by the ultrasonic signal transmission line and the head end of the ultrasonic endoscope body can be reduced, so that the endurance capacity of a dielectric medium in the ultrasonic endoscope body is improved, the process difficulty of configuration of the endoscope body is reduced, and the production cost is reduced. And the design and the assembly of the mirror body are convenient.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an ultrasonic endoscope body and ultrasonic endoscope device. Background Technology

[0002] Endoscopic ultrasound (EUS) devices combine the characteristics of ultrasound and endoscopy, enabling simultaneous imaging and detection of both ultrasound and endoscopic images. Current EUS devices integrate the ultrasound signal transmission line and the endoscopic signal transmission line into a single endoscope unit.

[0003] However, the endoscope body of an ultrasound endoscope needs to penetrate deep into the human body, and in some applications, a very thin endoscope body is required. Such endoscope body space is very limited, which places high demands on the electrical insulation of the ultrasound signal transmission lines and the endoscope signal transmission lines, as well as on the electrical insulation between the ultrasound signal transmission lines and the endoscope tip.

[0004] Therefore, how to meet the electrical insulation requirements between the ultrasound signal transmission line and the endoscope signal transmission line, as well as between the ultrasound signal transmission line and the endoscope head, and reduce the manufacturing difficulty of the endoscope configuration, is an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to provide an ultrasonic endoscope body and ultrasonic endoscope device to meet the electrical insulation requirements between the ultrasonic signal transmission line and the endoscope signal transmission line, as well as between the ultrasonic signal transmission line and the head end of the ultrasonic endoscope body, thereby reducing the manufacturing difficulty of the endoscope body configuration.

[0006] To solve the above-mentioned technical problems, this utility model provides an ultrasonic endoscope body, including: an ultrasonic endoscope head end, an ultrasonic signal transmission line, an endoscope signal transmission line, and an isolation device;

[0007] The endoscope head is connected to the ultrasound host system via the ultrasound signal transmission line for transmitting the acquired ultrasound signals to the ultrasound host system; the endoscope head is connected to the endoscope host system via the endoscope signal transmission line for transmitting the acquired endoscope signals to the endoscope host system.

[0008] The first end of the isolation device is connected to the ultrasound signal transmission line, the second end of the isolation device is connected to the endoscope signal transmission line, and a capacitor is provided in the isolation device.

[0009] For example, the first end of the isolation device is connected to the ultrasonic signal shielding layer of the ultrasonic signal transmission line, and the second end of the isolation device is connected to the endoscopic signal shielding layer of the endoscopic signal transmission line.

[0010] For example, one end of the ultrasound signal shielding layer is connected to the protective ground of the ultrasound host system, the other end of the ultrasound signal shielding layer is not connected to the head end of the ultrasound endoscope, one end of the endoscope signal shielding layer is connected to the positive output terminal of the endoscope host system, and the other end of the endoscope signal shielding layer is connected to the head end of the ultrasound endoscope.

[0011] For example, the isolation device includes a safety capacitor.

[0012] For example, the isolation device includes at least two safety capacitors connected in series.

[0013] For example, the capacitance of the capacitor in the isolation device is less than 1000pF.

[0014] For example, the isolation device includes: the capacitor and the resistor;

[0015] The common terminal of the capacitor and the resistor, which are connected to the first end of the capacitor, is connected to the ultrasonic signal transmission line; the common terminal of the capacitor and the resistor, which are connected to the second end of the resistor, is connected to the endoscopic signal transmission line.

[0016] In addition, this utility model also provides an ultrasonic endoscope device, including an ultrasonic endoscope body as described above, an ultrasonic host system connected to the ultrasonic endoscope body via an ultrasonic signal transmission line, and an endoscope host system connected to the ultrasonic endoscope body via an endoscope signal transmission line.

[0017] For example, the ultrasound host system includes a first primary circuit, a first transformer, a first secondary circuit, a first capacitor, and a second capacitor;

[0018] In this system, the first input terminal of the first primary circuit is connected to the live wire of the AC power supply, the second input terminal of the first primary circuit is connected to the neutral wire of the AC power supply, the ground wire of the AC power supply is connected to the protective ground of the ultrasound host system, the first output terminal of the first primary circuit is connected to the first end of the primary winding of the first transformer, the second output terminal of the first primary circuit is connected to the second end of the primary winding of the first transformer, the first end of the secondary winding of the first transformer is connected to the first input terminal of the first primary circuit, the second end of the secondary winding of the first transformer is connected to the second input terminal of the first primary circuit, the positive and negative output terminals of the first primary circuit are connected to the head end of the ultrasound endoscope body through the ultrasound signal transmission line, the ground terminal of the first primary circuit is connected to the protective ground through the first capacitor, the second end of the primary winding of the first transformer is connected to the second end of the secondary winding of the first transformer through the second capacitor, and the ground terminal of the first primary circuit is connected to the protective ground.

[0019] For example, the endoscope host system includes a second primary circuit, a second transformer, a second secondary circuit, a third transformer, an application circuit, a third capacitor, a fourth capacitor, and a fifth capacitor;

[0020] In this circuit, the first input terminal of the second primary circuit is connected to the live wire of the AC power supply, the second input terminal of the second primary circuit is connected to the neutral wire of the AC power supply, the ground wire of the AC power supply is connected to the protective ground of the ultrasonic host system, the first output terminal of the second primary circuit is connected to the first terminal of the primary winding of the second transformer, the second output terminal of the second primary circuit is connected to the second terminal of the primary winding of the second transformer, the first terminal of the secondary winding of the second transformer is connected to the first input terminal of the second secondary circuit, the second terminal of the secondary winding of the second transformer is connected to the second input terminal of the second secondary circuit, the positive output terminal of the second secondary circuit is connected to the first terminal of the primary winding of the third transformer, and the negative output terminal of the second secondary circuit is connected to the... The second end of the primary winding of the third transformer is connected to the first end of the secondary winding of the third transformer, and the second end of the secondary winding of the third transformer is connected to the second input terminal of the application circuit. The positive and negative output terminals of the application circuit are connected to the head end of the ultrasonic endoscope via the endoscope signal transmission line. The grounding terminal of the second primary circuit is connected to the protective ground via the third capacitor. The second end of the primary winding of the second transformer is connected to the second end of the secondary winding of the second transformer via the fourth capacitor. The grounding terminal of the second secondary circuit is connected to the protective ground. The second end of the primary winding of the third transformer is connected to the second end of the secondary winding of the third transformer via the fifth capacitor.

[0021] The present invention provides an ultrasonic endoscope body, comprising: an ultrasonic endoscope head end, an ultrasonic signal transmission line, an endoscope signal transmission line, and an isolation device; wherein, the ultrasonic endoscope head end is connected to an ultrasonic host system via the ultrasonic signal transmission line for transmitting acquired ultrasonic signals to the ultrasonic host system; the ultrasonic endoscope head end is connected to the endoscope host system via the endoscope signal transmission line for transmitting acquired endoscope signals to the endoscope host system; a first end of the isolation device is connected to the ultrasonic signal transmission line, a second end of the isolation device is connected to the endoscope signal transmission line, and a capacitor is disposed in the isolation device.

[0022] As can be seen, this invention achieves electrical isolation between the ultrasonic signal transmission line and the endoscope signal transmission line by incorporating a capacitor in the isolation device between them. This satisfies the electrical insulation requirements between the ultrasonic signal transmission line and the endoscope head, and reduces the voltage that the ultrasonic signal transmission line and the endoscope head must withstand. This improves the dielectric withstand capability of the endoscope head, meets the electrical insulation requirements between the ultrasonic signal transmission line and the endoscope head, reduces the manufacturing complexity of the endoscope head assembly, and facilitates the design and assembly of the endoscope head. Furthermore, this invention also provides an ultrasonic endoscope device that possesses the same beneficial effects. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 A structural block diagram of an ultrasonic endoscope body provided in an embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of an ultrasonic endoscope device provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of another ultrasonic endoscope body provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of another ultrasonic endoscope body provided in an embodiment of the present invention. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] The space within an ultrasonic endoscope is extremely limited, necessitating high electrical insulation requirements for both the ultrasonic signal transmission lines and the endoscope's signal transmission lines, as well as for the ultrasonic signal transmission lines and the endoscope's head. The inventors discovered that during dielectric testing of the ultrasonic main unit system's power supply to internal components (such as the transducer) at the endoscope's head, a significant portion of the test voltage (e.g., 4KV) is applied between the ultrasonic signal transmission lines and the endoscope's head. Meeting withstand voltage tests necessitates complex and inconsistent endoscope configuration processes. Therefore, addressing the electrical insulation requirements between the ultrasonic signal transmission lines and the endoscope's signal transmission lines, as well as between the ultrasonic signal transmission lines and the endoscope's head, while simultaneously reducing the complexity of endoscope configuration processes, is a pressing issue that requires immediate resolution.

[0030] Please refer to Figure 1 , Figure 1 This is a structural block diagram of an ultrasonic endoscope body provided in an embodiment of the present invention. The ultrasonic endoscope body may include: an ultrasonic endoscope head 10, an ultrasonic signal transmission line 20, an endoscope signal transmission line 30, and an isolation device 40;

[0031] The endoscope head 10 is connected to the ultrasound host system via an ultrasound signal transmission line 20 for transmitting the acquired ultrasound signals to the ultrasound host system; the endoscope head 10 is connected to the endoscope host system via an endoscope signal transmission line 30 for transmitting the acquired endoscope signals to the endoscope host system.

[0032] The first end of the isolation device 40 is connected to the ultrasonic signal transmission line 20, the second end of the isolation device 40 is connected to the endoscope signal transmission line 30, and a capacitor is provided in the isolation device 40.

[0033] In an endoscopic ultrasound system, the ultrasound signal and the endoscopic signal are transmitted independently, and their connection to the main unit is separate. The ultrasound signal transmission line is ultimately connected to the ultrasound main unit system, and the endoscopic signal transmission line is ultimately connected to the endoscopic main unit system. The protective ground of the ultrasound signal transmission line and the ultrasound main unit system can be non-isolated, while the protective ground of the endoscopic signal transmission line and the endoscopic main unit system can be isolated.

[0034] In this embodiment, an isolation device 40 is added between the ultrasonic signal transmission line 20 and the endoscope signal transmission line 30 inside the ultrasonic endoscope body. The isolation device 40 achieves electrical isolation between the ultrasonic signal transmission line 20 and the endoscope signal transmission line 30, which can conveniently meet the electrical insulation requirements between the ultrasonic signal transmission line 20 and the endoscope signal transmission line 30. At the same time, by setting the capacitor in the isolation device 40, the voltage that the ultrasonic signal transmission line 20 and the head end 10 of the ultrasonic endoscope body need to withstand can be reduced, thereby improving the dielectric withstand capability in the ultrasonic endoscope body and meeting the electrical insulation requirements between the ultrasonic signal transmission line 20 and the head end 10 of the ultrasonic endoscope body. This reduces the process requirements for the internal withstand voltage design of the ultrasonic endoscope body and facilitates the design and assembly of the ultrasonic endoscope body.

[0035] For example, such as Figure 2 As shown, when performing dielectric tests on the AC power supply (such as mains power) to the head end 10 of the ultrasound endoscope in the ultrasound host system, the capacitance values ​​of the first capacitor C1 and the second capacitor C2 are very large, generally greater than 1000pF. If the isolation device 40 is not set, the parasitic capacitance between the ultrasound signal transmission line 20 and the head end 10 of the ultrasound endoscope is very small (generally less than 100pF). Most of the 4KV / 50HZ test voltage will be applied between the ultrasound signal transmission line 20 and the head end 10 of the ultrasound endoscope inside the ultrasound endoscope. If it is necessary to withstand a withstand voltage of more than 3500V, the space here is very small, and the process requirements to meet the 4KV withstand voltage test are very complicated and the consistency is not good. By incorporating a capacitor in the isolation device 40, this application can effectively reduce the voltage between the ultrasonic signal transmission line 20 and the head end 10 of the ultrasonic endoscope, such as reducing the withstand voltage to 2400V, thereby improving the dielectric withstand capability of the ultrasonic endoscope and significantly reducing the process requirements for the internal withstand voltage design of the ultrasonic endoscope.

[0036] Correspondingly, this embodiment does not limit the specific location of the isolation device 40. For example, the two ends of the isolation device 40 can be connected to the ultrasonic signal shielding layer of the ultrasonic signal transmission line 20 and the endoscopic signal shielding layer of the endoscope signal transmission line 30, respectively. Accordingly, when one end of the ultrasonic signal shielding layer is connected to the protective ground of the ultrasonic host system, and the other end of the ultrasonic signal shielding layer is not connected to the endoscope head 10, and one end of the endoscope signal shielding layer is connected to the positive output terminal of the endoscope host system, and the other end of the endoscope signal shielding layer is connected to the endoscope head 10, the first end of the isolation device 40 bridging the ultrasonic signal shielding layer and the endoscope signal shielding layer can be connected to the protective ground of the ultrasonic host system, and the second end can be connected to the endoscope head 10, thereby providing a discharge loop for interference signals entering the ultrasonic system, allowing them to be discharged through the protective ground, thereby improving the anti-interference capability of the ultrasonic system image.

[0037] Furthermore, in order to avoid interference from the external environment and endoscopic signals after the ultrasound endoscope enters the human body, a shielding layer can be separately set near the array element at the tip 10 of the ultrasound endoscope in this embodiment to achieve the purpose of shielding interference signals.

[0038] It should be noted that the specific structure of the isolation device 40 in this embodiment can be customized by the designer according to the practical scenario and user requirements, such as...

[0039] The isolation device 40 may include a capacitor, with a first end connected to the ultrasound signal transmission line 20 and a second end connected to the endoscope signal transmission line 30; for example Figure 2 and Figure 3 The first end of the capacitor (C6) in the isolation device 40 can be connected to the ultrasonic signal shielding layer of the ultrasonic signal transmission line 20 as the first end of the isolation device 40, and the second end of the capacitor can be connected to the endoscope signal transmission line 30 as the second end of the isolation device 40. The isolation device 40 may also include a capacitor and a resistor; the common terminal connecting the first end of the capacitor and the first end of the resistor can be connected to the ultrasonic signal transmission line 20 as the first end of the isolation device 40; the common terminal connecting the second end of the capacitor and the second end of the resistor can be connected to the endoscope signal transmission line 30 as the second end of the isolation device 40; as shown... Figure 4 As shown, the isolation device 40 may include a capacitor (C6) and a resistor (R1); wherein, the first end of the capacitor is connected to the first end of the resistor, and their common end is connected to the ultrasonic signal shielding layer of the ultrasonic signal transmission line 20; the second end of the capacitor is connected to the second end of the resistor, and their common end is connected to the endoscopic signal shielding layer of the endoscope signal transmission line 30; both the capacitor and the resistor can meet the high voltage resistance requirements. As long as the isolation device 40 can use the capacitor to achieve the effect of isolating the ultrasonic signal transmission line 20 and the endoscope signal transmission line 30, and reducing the voltage that the ultrasonic signal transmission line 20 and the endoscope tip 10 need to withstand, this embodiment does not impose any limitations on this.

[0040] In this embodiment, the endoscope head 10 can be the application part of the endoscope body. For example, the endoscope head 10 may include a transducer of the ultrasound system for outputting and acquiring ultrasound signals; it may also include an image acquisition component of the endoscope system for acquiring endoscopic signals.

[0041] Correspondingly, in this embodiment, the ultrasound host system connected to the ultrasound endoscope body can control the operation of the vibrator element in the ultrasound endoscope head end 10 through the ultrasound signal transmission line 20. For example, it can control the vibrator element to emit ultrasound signals and collect the returned ultrasound signals, which are then returned to the ultrasound host system via the ultrasound signal transmission line 20. The specific structure of the ultrasound host system in this embodiment can be customized by the designer according to the practical scenario and user requirements. Figure 2 As shown, the ultrasound host system may include a first primary circuit, a first transformer, a second primary circuit, a first capacitor (C1), and a second capacitor (C2). The first input terminal of the first primary circuit is connected to the live wire (L terminal) of an AC power supply (such as mains power), the second input terminal of the first primary circuit is connected to the neutral wire (N terminal) of the AC power supply, the ground wire (PE terminal) of the AC power supply is connected to the protective ground of the ultrasound host system, the first output terminal of the first primary circuit is connected to the first terminal of the primary winding of the first transformer, and the second output terminal of the first primary circuit is connected to the second terminal of the primary winding of the first transformer. The first end of the secondary winding is connected to the first input terminal of the primary circuit, and the second end of the secondary winding of the first transformer is connected to the second input terminal of the primary circuit. The positive and negative output terminals of the primary circuit are connected to the head end 10 of the ultrasonic endoscope body via the ultrasonic signal transmission line 20. The grounding terminal of the primary circuit is connected to the protective ground via the first capacitor to suppress common-mode interference and enhance insulation. The second end of the primary winding of the first transformer is connected to the second end of the secondary winding of the first transformer via the second capacitor to suppress common-mode interference and provide higher withstand voltage. The grounding terminal of the primary circuit is connected to the protective ground.

[0042] Correspondingly, the first primary circuit in the ultrasound host system can rectify and boost the AC power input to convert it into DC power; the first transformer can convert the DC power output from the first primary circuit into DC power required by the various electrical components in the first primary circuit (such as circuit boards, data processing and transmission circuits, and central processing unit CPUs), so that the CPU in the first primary circuit can control the array elements at the head end 10 of the ultrasound endoscope through the data processing and transmission circuit and receive the data corresponding to the ultrasound signals collected by the vibration elements.

[0043] Correspondingly, in this embodiment, the endoscope host system connected to the ultrasound endoscope body can control the image acquisition component in the ultrasound endoscope head end 10 to acquire the returned endoscope signal through the endoscope signal transmission line 30, and return it to the endoscope host system through the endoscope signal transmission line 30. The specific structure of the endoscope host system in this embodiment can be customized by the designer according to the practical scenario and user needs, such as... Figure 2As shown, the endoscope main unit system may include a second primary circuit, a second transformer, a second secondary circuit, a third transformer, an application circuit, a third capacitor (C3), a fourth capacitor (C4), and a fifth capacitor (C5). The first input terminal of the second primary circuit is connected to the live wire of the AC power supply, the second input terminal of the second primary circuit is connected to the neutral wire of the AC power supply, the ground wire of the AC power supply is connected to the protective ground of the ultrasound main unit system, the first output terminal of the second primary circuit is connected to the first terminal of the primary winding of the second transformer, the second output terminal of the second primary circuit is connected to the second terminal of the primary winding of the second transformer, the first terminal of the secondary winding of the second transformer is connected to the first input terminal of the second secondary circuit, the second terminal of the secondary winding of the second transformer is connected to the second input terminal of the second secondary circuit, and the positive output terminal of the second secondary circuit is connected to the first terminal of the primary winding of the third transformer. The negative output terminal of the second-stage circuit is connected to the second terminal of the primary winding of the third transformer. The first terminal of the secondary winding of the third transformer is connected to the first input terminal of the application circuit. The second terminal of the secondary winding of the third transformer is connected to the second input terminal of the application circuit. The positive and negative output terminals of the application circuit are connected to the head end 10 of the ultrasonic endoscope via the endoscope signal transmission line 30. The ground terminal of the second primary circuit is connected to the protective ground via the third capacitor to suppress common-mode interference and enhance insulation. The second terminal of the primary winding of the second transformer is connected to the second terminal of the secondary winding of the second transformer via the fourth capacitor to suppress common-mode interference and provide higher withstand voltage. The ground terminal of the second-stage circuit is connected to the protective ground. The second terminal of the primary winding of the third transformer is connected to the second terminal of the secondary winding of the third transformer via the fifth capacitor to suppress common-mode interference and provide higher withstand voltage.

[0044] Correspondingly, the second primary circuit in the endoscope host system can rectify and boost the AC power input, converting it into DC power; the second transformer can convert the DC power output from the second primary circuit into DC power required by various electrical components in the second-stage circuit (such as circuit boards, data processing chips, and central processing unit CPUs); the third transformer can act as an isolation power supply to achieve electrical isolation between the data processing chip in the second transformer and the application circuit; the application circuit is used to convert the endoscopic signals collected by the camera in the head end 10 of the ultrasound endoscope into corresponding image data and transmit it to the second-stage circuit through the third transformer, such as to the data processing chip in the second-stage circuit.

[0045] It is understood that the type and number of capacitors in the isolation device 40 in this embodiment can be set by the designer according to the practical scenario and user needs, such as according to the specifications of the first capacitor and the second capacitor mentioned above. For example, in order to ensure the reliability of the ultrasonic endoscope and prevent leakage risk, the capacitors in the isolation device 40 can be safety capacitors, such as a Y1 type capacitor with a voltage withstand greater than 8kV, which can be set in the isolation device 40; for example, the isolation device 40 includes a Y1 type capacitor; wherein, the first end of the Y1 type capacitor is connected to the ultrasonic signal shielding layer of the ultrasonic signal transmission line 20, and the second end of the Y1 type capacitor is connected to the endoscope signal shielding layer of the endoscope signal transmission line 30. The isolation device 40 may also be equipped with at least two safety capacitors connected in series. For example, the isolation device 40 may include two Y2 type capacitors (e.g., with a voltage withstand capability greater than 5kV). The first terminal of the first Y2 type capacitor is connected to the ultrasonic signal shielding layer of the ultrasonic signal transmission line 20, and the second terminal of the first Y2 type capacitor is connected to the first terminal of the first Y2 type capacitor. The second terminal of the second Y2 type capacitor is connected to the endoscopic signal shielding layer of the endoscopic signal transmission line 30. This embodiment does not impose any limitations on this.

[0046] Correspondingly, the capacitance of the capacitor in the isolation device 40 in this embodiment can be set by the designer. For example, in this embodiment, the capacitance of the capacitor in the isolation device 40 is controlled to meet the requirements of human body leakage current, that is, the capacitance will not be too large. It can be adaptively adjusted according to the capacitance of the ultrasound host and the endoscope host. For example, it can be set within 1000pF to ensure that there is no safety risk such as leakage current to the human body. For example, if... Figure 2 As shown, during the dielectric experiment verifying the connection between the mains power supply of the ultrasound host system and the head end 10 of the ultrasound endoscope, the presence of capacitor C6 allows for effective reduction of the voltage across C6 by adjusting its value. This reduces the withstand voltage between the ultrasound signal and the head end 10 of the ultrasound endoscope. For example, in traditional system architectures, the parasitic capacitance between the ultrasound signal transmission line 20 and the endoscope signal transmission line 30 is very small (typically less than 100pF), sometimes requiring the ends to withstand voltages exceeding 3500V. In this embodiment, capacitor C6 in the isolation device 40 is used. Through capacitance design, the withstand voltage across C6 can be reduced to approximately 2400V, significantly lowering the voltage withstand requirements for the ultrasound endoscope.

[0047] In addition, endoscopic ultrasound equipment often needs to be used in conjunction with devices such as ultrasonic electrosurgical units. Electrosurgical signals pass through the endoscopic ultrasound equipment and are strong interference sources, significantly interfering with the ultrasound signal. In this embodiment, the first end of the isolation device 40 is connected to the ultrasound signal shielding layer for connection to the protective ground of the ultrasound host system, and the second end of the isolation device 40 is connected to the endoscope signal shielding layer for connection to the endoscope head 10. Through the capacitor in the isolation device 40, when external interference signals (such as electrosurgical signals) enter the ultrasound system, the interference signals can be discharged to the protective ground of the ultrasound host system through the isolation device 40, thereby reducing the impact of interference signals on the ultrasound signal, improving the anti-interference capability of the ultrasound image, and improving the quality of the ultrasound image.

[0048] like Figure 2 and Figure 3 As shown, capacitor C6 of the isolating device 40 inside the ultrasound endoscope is connected between the ultrasound signal shielding layer and the endoscope signal shielding layer. That is, one end of C6 can be connected to the ultrasound signal shielding ground of the ultrasound host system. The ultrasound signal shielding ground of the ultrasound host system is connected to the protective ground of the ultrasound host system, which can provide a discharge circuit for interference signals entering the ultrasound system. The other end of C6 can be connected to the ultrasound endoscope head 10 inside the ultrasound endoscope through the endoscope signal shielding layer. In other words, the ultrasound signal and the protective ground of the ultrasound host system are not isolated, while the endoscope signal and the protective ground of the endoscope host system are isolated. Inside the ultrasound endoscope, the ultrasound signal shielding layer connected to capacitor C6 of the isolating device 40 is not connected to the ultrasound endoscope head 10, but the endoscope signal shielding layer connected to capacitor C6 is connected to the ultrasound endoscope head 10.

[0049] In this embodiment of the invention, the capacitor in the isolation device 40 between the ultrasonic signal transmission line 20 and the endoscope signal transmission line 30 achieves electrical isolation between the ultrasonic signal transmission line 20 and the endoscope signal transmission line 30, thereby meeting the electrical insulation requirements between the ultrasonic signal transmission line 20 and the endoscope head 30. This also reduces the voltage that the ultrasonic signal transmission line 20 and the endoscope head 30 need to withstand, thereby improving the dielectric withstand capability of the endoscope body, meeting the electrical insulation requirements between the ultrasonic signal transmission line and the endoscope head, reducing the manufacturing difficulty of the endoscope body configuration, and facilitating the design and assembly of the endoscope body.

[0050] Corresponding to the above embodiment of the ultrasonic endoscope body, this utility model embodiment also provides an ultrasonic endoscope device. The ultrasonic endoscope device described below and the ultrasonic endoscope body described above can be referred to each other.

[0051] An endoscopic ultrasound device includes an endoscopic ultrasound body as described in the above embodiments.

[0052] The ultrasonic endoscope device provided in this embodiment may further include: an ultrasonic host system and an endoscope host system; the ultrasonic host system can be connected to the ultrasonic endoscope head end of the ultrasonic endoscope body through an ultrasonic signal transmission line, and the endoscope host system can be connected to the ultrasonic endoscope head end of the ultrasonic endoscope body through an endoscope signal transmission line.

[0053] In other embodiments, the ultrasound host system may include a first primary circuit, a first transformer, a first primary circuit, a first capacitor, and a second capacitor.

[0054] In this circuit, the first input terminal of the first primary circuit is connected to the live wire of the AC power supply, the second input terminal of the first primary circuit is connected to the neutral wire of the AC power supply, the ground wire of the AC power supply is connected to the protective ground of the ultrasonic host system, the first output terminal of the first primary circuit is connected to the first end of the primary winding of the first transformer, the second output terminal of the first primary circuit is connected to the second end of the primary winding of the first transformer, the first end of the secondary winding of the first transformer is connected to the first input terminal of the first primary circuit, the second end of the secondary winding of the first transformer is connected to the second input terminal of the first primary circuit, and the positive and negative output terminals of the first primary circuit are connected to the head end of the ultrasonic endoscope body through an ultrasonic signal transmission line. The ground terminal of the first primary circuit is connected to the protective ground through a first capacitor to suppress common-mode interference and enhance insulation. The second end of the primary winding of the first transformer is connected to the second end of the secondary winding of the first transformer through a second capacitor to suppress common-mode interference and provide higher withstand voltage. The ground terminal of the first primary circuit is connected to the protective ground.

[0055] In other embodiments, the endoscope host system may include a second primary circuit, a second transformer, a second secondary circuit, a third transformer, an application circuit, a third capacitor, a fourth capacitor, and a fifth capacitor.

[0056] In this circuit, the first input terminal of the second primary circuit is connected to the live wire of the AC power supply, the second input terminal of the second primary circuit is connected to the neutral wire of the AC power supply, the ground wire of the AC power supply is connected to the protective ground of the ultrasonic host system, the first output terminal of the second primary circuit is connected to the first terminal of the primary winding of the second transformer, the second output terminal of the second primary circuit is connected to the second terminal of the primary winding of the second transformer, the first terminal of the secondary winding of the second transformer is connected to the first input terminal of the second secondary circuit, the second terminal of the secondary winding of the second transformer is connected to the second input terminal of the second secondary circuit, the positive output terminal of the second secondary circuit is connected to the first terminal of the primary winding of the third transformer, and the negative output terminal of the second secondary circuit is connected to the second terminal of the primary winding of the third transformer. The first end of the secondary winding of the transformer is connected to the first input terminal of the application circuit, and the second end of the secondary winding of the third transformer is connected to the second input terminal of the application circuit. The positive and negative output terminals of the application circuit are connected to the head end of the ultrasound endoscope via the endoscope signal transmission line. The grounding terminal of the second primary circuit is connected to the protective ground via the third capacitor to suppress common-mode interference and enhance insulation. The second end of the primary winding of the second transformer is connected to the second end of the secondary winding of the second transformer via the fourth capacitor to suppress common-mode interference and provide higher withstand voltage. The grounding terminal of the second secondary circuit is connected to the protective ground, and the second end of the primary winding of the third transformer is connected to the second end of the secondary winding of the third transformer via the fifth capacitor to suppress common-mode interference and provide higher withstand voltage.

[0057] The present invention provides a detailed description of an ultrasonic endoscope body and ultrasonic endoscope device. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the embodiments are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An ultrasonic endoscope body, characterized in that, include: Ultrasonic endoscope head, ultrasonic signal transmission line, endoscopic signal transmission line, and isolation device; The endoscope head is connected to the ultrasound host system via the ultrasound signal transmission line for transmitting the acquired ultrasound signals to the ultrasound host system; the endoscope head is connected to the endoscope host system via the endoscope signal transmission line for transmitting the acquired endoscope signals to the endoscope host system. The first end of the isolation device is connected to the ultrasound signal transmission line, the second end of the isolation device is connected to the endoscope signal transmission line, and a capacitor is provided in the isolation device.

2. The ultrasonic endoscope body according to claim 1, characterized in that, The first end of the isolation device is connected to the ultrasonic signal shielding layer of the ultrasonic signal transmission line, and the second end of the isolation device is connected to the endoscopic signal shielding layer of the endoscopic signal transmission line.

3. The ultrasonic endoscope body according to claim 2, characterized in that, One end of the ultrasonic signal shielding layer is connected to the protective ground of the ultrasonic host system, and the other end of the ultrasonic signal shielding layer is not connected to the head end of the ultrasonic endoscope. One end of the endoscope signal shielding layer is connected to the positive output terminal of the endoscope host system, and the other end of the endoscope signal shielding layer is connected to the head end of the ultrasonic endoscope.

4. The ultrasonic endoscope body according to claim 1, characterized in that, The isolation device includes a safety capacitor.

5. The ultrasonic endoscope body according to claim 3, characterized in that, The isolation device includes at least two safety capacitors connected in series.

6. The ultrasonic endoscope body according to claim 1, characterized in that, The capacitance of the capacitor in the isolation device is less than 1000pF.

7. The ultrasonic endoscope body according to claim 1, characterized in that, The isolation device includes: the capacitor and the resistor; The common terminal of the capacitor and the resistor, which are connected to the first end of the capacitor, is connected to the ultrasonic signal transmission line; the common terminal of the capacitor and the resistor, which are connected to the second end of the resistor, is connected to the endoscopic signal transmission line.

8. An endoscopic ultrasound device, characterized in that, It includes an ultrasound endoscope body as described in any one of claims 1 to 7, an ultrasound host system connected to the ultrasound endoscope body via an ultrasound signal transmission line, and an endoscope host system connected to the ultrasound endoscope body via an endoscope signal transmission line.

9. The ultrasonic endoscopic device according to claim 8, characterized in that, The ultrasound host system includes a first primary circuit, a first transformer, a first secondary circuit, a first capacitor, and a second capacitor; In this system, the first input terminal of the first primary circuit is connected to the live wire of the AC power supply, the second input terminal of the first primary circuit is connected to the neutral wire of the AC power supply, the ground wire of the AC power supply is connected to the protective ground of the ultrasound host system, the first output terminal of the first primary circuit is connected to the first end of the primary winding of the first transformer, the second output terminal of the first primary circuit is connected to the second end of the primary winding of the first transformer, the first end of the secondary winding of the first transformer is connected to the first input terminal of the first primary circuit, the second end of the secondary winding of the first transformer is connected to the second input terminal of the first primary circuit, the positive and negative output terminals of the first primary circuit are connected to the head end of the ultrasound endoscope body through the ultrasound signal transmission line, the ground terminal of the first primary circuit is connected to the protective ground through the first capacitor, the second end of the primary winding of the first transformer is connected to the second end of the secondary winding of the first transformer through the second capacitor, and the ground terminal of the first primary circuit is connected to the protective ground.

10. The ultrasonic endoscopic device according to claim 8, characterized in that, The endoscope host system includes a second primary circuit, a second transformer, a second secondary circuit, a third transformer, an application circuit, a third capacitor, a fourth capacitor, and a fifth capacitor. In this circuit, the first input terminal of the second primary circuit is connected to the live wire of the AC power supply, the second input terminal of the second primary circuit is connected to the neutral wire of the AC power supply, the ground wire of the AC power supply is connected to the protective ground of the ultrasonic host system, the first output terminal of the second primary circuit is connected to the first terminal of the primary winding of the second transformer, the second output terminal of the second primary circuit is connected to the second terminal of the primary winding of the second transformer, the first terminal of the secondary winding of the second transformer is connected to the first input terminal of the second secondary circuit, the second terminal of the secondary winding of the second transformer is connected to the second input terminal of the second secondary circuit, the positive output terminal of the second secondary circuit is connected to the first terminal of the primary winding of the third transformer, and the negative output terminal of the second secondary circuit is connected to the... The second end of the primary winding of the third transformer is connected to the first end of the secondary winding of the third transformer, and the second end of the secondary winding of the third transformer is connected to the second input terminal of the application circuit. The positive and negative output terminals of the application circuit are connected to the head end of the ultrasonic endoscope via the endoscope signal transmission line. The grounding terminal of the second primary circuit is connected to the protective ground via the third capacitor. The second end of the primary winding of the second transformer is connected to the second end of the secondary winding of the second transformer via the fourth capacitor. The grounding terminal of the second secondary circuit is connected to the protective ground. The second end of the primary winding of the third transformer is connected to the second end of the secondary winding of the third transformer via the fifth capacitor.

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