Ultrasonic puncture structure and ultrasonic puncture system

Abstract

This application relates to an ultrasonic puncture structure and system. The ultrasonic puncture structure includes: a puncture needle; a puncture cannula, partially sleeved on the outside of the puncture needle, with the puncture needle movably positioned within the cannula so that the needle tip protrudes from the cannula; and an ultrasonic transducer, disposed within the puncture needle and close to its tip, electrically connected to the ultrasonic imaging equipment of the ultrasonic puncture system to transmit ultrasonic signals. Thus, by integrating an ultrasonic transducer within the puncture needle, the ultrasonic waves emitted by the transducer can be used to monitor the lesion site in real time, guiding the puncture needle to accurately penetrate the lesion. This establishes a percutaneous channel from the puncture cannula to the lesion site, facilitating subsequent diagnosis and treatment. This allows for ultrasound scanning within the patient's body without the need for transposition scanning, improving percutaneous puncture positioning accuracy, shortening surgical time, and reducing medical costs.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an ultrasonic puncture structure and ultrasonic puncture system. Background Technology

[0002] Percutaneous puncture localization surgery is widely used in current treatment methods. It can be applied to percutaneous puncture localization biopsy, ablation, and other procedures. Compared with traditional open surgery, percutaneous puncture localization surgery has a smaller incision, faster recovery, and significantly reduced operation time, making it a better treatment option for both doctors and patients. The core issue of percutaneous puncture localization surgery is ensuring that the percutaneous puncture is located accurately.

[0003] Currently, there are several percutaneous puncture localization methods, including: extracorporeal ultrasound localization, MRI (Magnetic Resonance Imaging) guidance, and CT (Computed Tomography) guidance.

[0004] For extracorporeal ultrasound localization, a standard extracorporeal ultrasound probe with a frequency of approximately 3-10 MHz is typically used. The probe and puncture needle are positioned at a specific angle, and real-time two-dimensional ultrasound images provide guidance, which is currently a commonly used guidance method. However, extracorporeal ultrasound localization has low spatial resolution and suffers from image distortion. Furthermore, ultrasound cannot penetrate areas with air sacs in the lungs or bone obstructions, making traditional ultrasound unsuitable for guidance in such cases.

[0005] For MRI-guided soft tissue imaging, the results are excellent, capable of reconstructing fine details such as blood vessels with high precision. However, MRI-guided imaging is slow, and magnetically compatible medical devices are expensive, hindering widespread adoption.

[0006] While CT-guided percutaneous punctures offer high spatial and density resolution, enabling rapid and clear visualization of anatomical structures throughout the body, they lack intuitive visual guidance and real-time dynamic navigation. Multiple CT scans are often required during the procedure, constantly adjusting the puncture direction and depth based on the images. This increases the radiation dose received by the patient, significantly prolongs the procedure, and leads to more puncture complications, increasing patient trauma and suffering. Furthermore, both MRI and CT-guided procedures require specific equipment, resulting in high costs and significant inconvenience. Utility Model Content

[0007] Therefore, it is necessary to provide an ultrasonic puncture structure and system to address the problems of inaccurate positioning, inconvenient scanning, and high cost in current percutaneous puncture surgery. This system can monitor the lesion site in real time to guide the puncture needle to accurately penetrate the lesion site, realize ultrasound scanning in the patient's body without the need for field scanning, improve the positioning accuracy of percutaneous puncture, shorten the operation time, and reduce medical costs.

[0008] An ultrasonic puncture structure, comprising:

[0009] Puncture needle;

[0010] A puncture cannula is partially fitted over the outside of the puncture needle, and the puncture needle is movably disposed within the puncture cannula, allowing the tip of the puncture needle to protrude from the puncture cannula; and

[0011] An ultrasonic transducer is disposed in the puncture needle and close to the tip of the puncture needle. The ultrasonic transducer is electrically connected to the ultrasonic imaging device of the ultrasonic puncture system to transmit ultrasonic signals to the ultrasonic imaging device.

[0012] In one embodiment of this application, the puncture needle has an ultrasonic window that extends radially into the inner cavity of the puncture needle and is close to the needle tip, and the ultrasonic transducer is located in the ultrasonic window.

[0013] In one embodiment of this application, the emitting surface of the ultrasonic transducer faces the ultrasonic window;

[0014] And / or, the ultrasonic transducer is fixed to the puncture needle by adhesive bonding;

[0015] And / or, the number of ultrasound windows is one, or the number of ultrasound windows is multiple, the multiple ultrasound windows are arranged at intervals along the axial and / or circumferential direction of the puncture needle, and each ultrasound window corresponds to one ultrasound transducer.

[0016] In one embodiment of this application, the ultrasonic transducer includes one ultrasonic array element, or the ultrasonic transducer includes multiple ultrasonic array elements arranged in an array.

[0017] And / or, the ultrasound window is square, and the side length of the ultrasound window ranges from 0.3mm to 4.5mm; or, the ultrasound window is circular, elliptical, or rectangular.

[0018] In one embodiment of this application, the puncture needle includes a puncture tube body and a needle tip, one end of the puncture tube body is connected to the needle tip, and the ultrasound window is disposed at the end of the puncture tube body near the needle tip.

[0019] In one embodiment of this application, the needle tip is arranged at an angle;

[0020] And / or, the outer diameter of the puncture tube is 0.3mm to 4.5mm;

[0021] And / or, the ultrasound window is located at the inclined end of the needle tip, or the ultrasound window is partially located on the inclined surface of the needle tip.

[0022] In one embodiment of this application, the outer diameter of the puncture needle is adapted to the inner diameter of the puncture cannula, and the puncture needle and the puncture cannula are coaxially arranged.

[0023] In one embodiment of this application, the ultrasonic puncture structure further includes a connecting cable that connects the ultrasonic transducer to the ultrasonic imaging device and is partially located in the puncture needle.

[0024] In one embodiment of this application, the ultrasonic transducer includes a backing layer, a piezoelectric layer, a first matching layer, and a second matching layer stacked together. The backing layer is disposed on the connecting cable, the piezoelectric layer is electrically connected to the connecting cable, and the second matching layer is aligned with the ultrasonic window of the puncture needle.

[0025] An ultrasonic puncture system includes an ultrasonic imaging device and an ultrasonic puncture structure as described in any of the above technical features, wherein an ultrasonic transducer in the ultrasonic puncture structure is electrically connected to the ultrasonic imaging device.

[0026] The ultrasonic imaging device can supply power to the ultrasonic transducer so that the ultrasonic transducer emits ultrasonic waves. The ultrasonic transducer can also receive ultrasonic signals and transmit them to the ultrasonic imaging device, which then forms an image based on the received ultrasonic signals.

[0027] By adopting the above technical solution, this application has at least the following technical effects:

[0028] The ultrasonic puncture structure and ultrasonic puncture system of this application include an ultrasonic puncture structure in which a puncture cannula is fitted over a puncture needle, an ultrasonic transducer is disposed in the puncture needle and close to the needle tip, the puncture needle is movably disposed in the puncture cannula, and the needle tip of the puncture needle can extend out of the puncture cannula so that the ultrasonic transducer emits ultrasonic waves on the outside of the puncture cannula. The ultrasonic transducer can be electrically connected to the ultrasonic imaging equipment of the ultrasonic puncture system to transmit ultrasonic signals to the ultrasonic imaging equipment.

[0029] This ultrasonic puncture structure allows the puncture cannula and puncture needle to carry an ultrasonic transducer into the patient's body. The ultrasonic transducer emits and receives ultrasonic waves to locate the lesion. Based on the lesion location, it guides the movement of the puncture needle and puncture cannula within the patient's body, ensuring accurate insertion of the puncture needle into the lesion. Thus, the ultrasonic puncture structure integrates an ultrasonic transducer within the puncture needle. The ultrasonic waves emitted by the transducer can monitor the lesion site in real time, guiding the puncture needle to accurately penetrate the lesion. This establishes a percutaneous channel from the puncture cannula to the lesion site, facilitating subsequent diagnosis and treatment. This allows for ultrasound scanning within the patient's body without the need for field-shifting scanning, improving percutaneous puncture positioning accuracy, shortening surgical time, and reducing medical costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of an ultrasonic puncture system according to an embodiment of this application.

[0031] Figure 2 for Figure 1 The diagram shows an exploded view of the ultrasonic puncture system.

[0032] Figure 3 for Figure 1 The front view of the ultrasonic puncture structure in the ultrasonic puncture system shown.

[0033] Figure 4 for Figure 3 The diagram shows an exploded view of the ultrasonic puncture structure.

[0034] Figure 5 for Figure 3 The image shows a magnified view of the ultrasonic puncture structure at point A.

[0035] Figure 6 for Figure 3 A top view of the ultrasonic puncture structure shown.

[0036] Figure 7 for Figure 6 The image shows a magnified view of the ultrasonic puncture structure at point B.

[0037] Figure 8 for Figure 4 The diagram shows the connection between the connecting cable and the ultrasonic transducer in the ultrasonic puncture structure.

[0038] Figure 9 for Figure 8 The front view showing the connection cable to the ultrasonic transducer.

[0039] Figure 10 for Figure 8 The top view showing the connection cable to the ultrasonic transducer.

[0040] Among them: 10, ultrasonic puncture system; 100, ultrasonic puncture structure; 110, puncture needle; 111, needle tip; 112, ultrasonic window; 113, puncture tube body; 120, puncture cannula; 130, ultrasonic transducer; 131, backing layer; 132, piezoelectric layer; 133, first matching layer; 134, second matching layer; 140, connecting cable; 200, ultrasonic imaging equipment. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0043] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0047] Understandably, percutaneous puncture localization surgery is widely used in current treatment methods. It can be applied to percutaneous puncture localization biopsy, ablation, and other procedures. Compared with traditional open surgery, percutaneous puncture localization surgery has a smaller incision, faster recovery, and significantly reduced operation time, making it a better treatment option for both doctors and patients. The core issue in percutaneous puncture localization surgery is ensuring accurate percutaneous puncture localization. Currently, there are several methods for percutaneous puncture localization, including: external ultrasound localization, MRI (Magnetic Resonance Imaging) guidance, and CT (Computed Tomography) guidance.

[0048] However, extracorporeal ultrasound positioning has low spatial resolution and suffers from image distortion. Furthermore, ultrasound cannot penetrate areas with air cavities in the lungs or bone obstructions, making traditional ultrasound unsuitable for guidance. MRI-guided imaging is slow, and magnetically compatible medical devices are expensive and difficult to widely adopt. CT-guided procedures lack intuitive visualization and real-time dynamic navigation, often requiring multiple CT scans during percutaneous puncture to continuously adjust the puncture direction and depth based on the images. This increases the radiation dose received by the patient, significantly prolongs the procedure time, and leads to more puncture complications, increasing patient trauma and suffering. Moreover, both MRI and CT guidance require specific equipment, making them costly and extremely inconvenient.

[0049] For this purpose, please refer to Figures 1 to 3 This application provides an ultrasonic puncture structure 100. The ultrasonic puncture structure 100 is used in an ultrasonic puncture system 10. Figure 1 This is a schematic diagram of an ultrasonic puncture system 10 according to an embodiment of this application. Figure 2 for Figure 1 The exploded view of the ultrasonic puncture system 10 shown is shown below. Figure 3 for Figure 1 The front view of the ultrasonic puncture structure 100 in the ultrasonic puncture system 10 shown.

[0050] The ultrasonic puncture structure 100 can penetrate the patient's body through a small incision in the skin. It emits ultrasonic waves to locate the lesion site within the patient's body. The operator can guide the movement of the ultrasonic puncture structure 100 within the patient's body according to the lesion location, ensuring the structure reaches the lesion site and establishing a percutaneous channel to the lesion, facilitating subsequent diagnosis and treatment. The lesion site in this application includes, but is not limited to, tumor tissue, and can also be other types of lesions.

[0051] To better illustrate the specific structure of the ultrasonic puncture structure 100, the structure of the ultrasonic puncture system 10 is first briefly introduced here. (See reference...) Figures 1 to 3 The ultrasonic puncture system 10 includes an ultrasonic imaging device 200 and the ultrasonic puncture structure 100 of this application. The ultrasonic puncture structure 100 is electrically connected to the ultrasonic imaging device 200, and the ultrasonic imaging device 200 is able to supply power to the ultrasonic puncture structure 100 so that the ultrasonic puncture structure 100 can emit ultrasonic waves inside the patient's body.

[0052] The lesion site can reflect ultrasound waves to locate the lesion site. The ultrasound puncture structure 100 can receive ultrasound signals and transmit them to the ultrasound imaging device 200. The ultrasound imaging device 200 can create an image based on the received ultrasound signals. The surgeon operates the ultrasound puncture structure 100 according to the image created by the ultrasound imaging device 200, so that the ultrasound puncture structure 100 moves accurately to the lesion site in the patient's body.

[0053] In this way, the ultrasound imaging device 200 and the ultrasound puncture structure 100 can accurately locate the lesion in the patient's body, realize the guidance of percutaneous puncture positioning, and enable the ultrasound puncture structure 100 to accurately puncture the lesion in the guided direction after being inserted into the patient's body. This avoids the problems of slow imaging speed and high cost that occur with MRI guidance, and also avoids the problem of increased radiation dose caused by repeated CT guidance.

[0054] The ultrasonic puncture structure 100 of this application integrates an ultrasonic transducer 130 within the puncture needle 110. The ultrasonic waves emitted by the transducer 130 enable real-time monitoring of the lesion site, guiding the puncture needle 110 to accurately penetrate the lesion. This establishes a percutaneous channel from the puncture cannula 120 to the lesion site, facilitating subsequent diagnosis and treatment. This allows for ultrasound scanning within the patient's body without the need for field-shifting scanning, improving percutaneous puncture positioning accuracy, shortening surgical time, and reducing medical costs. The specific structures of the ultrasonic puncture structure 100 in some embodiments are described below.

[0055] See Figures 1 to 4 In one embodiment, the ultrasonic puncture structure 100 includes a puncture needle 110, a puncture cannula 120, and an ultrasonic transducer 130. The puncture cannula 120 is partially sleeved on the outside of the puncture needle 110, and the puncture needle 110 is movably disposed within the puncture cannula 120, allowing the tip 111 of the puncture needle 110 to protrude from the puncture cannula 120. The ultrasonic transducer 130 is disposed within the puncture needle 110 and close to the tip 111 of the puncture needle 110. The ultrasonic transducer 130 is electrically connected to the ultrasonic imaging device 200 of the ultrasonic puncture system 10 to transmit ultrasonic signals to the ultrasonic imaging device 200. Figure 4 for Figure 3 An exploded view of the ultrasonic puncture structure 100 shown.

[0056] The puncture needle 110 is the main component of the ultrasonic puncture structure 100 for puncture, the puncture cannula 120 is the component of the ultrasonic puncture structure 100 for establishing a percutaneous channel to the lesion site, and the ultrasonic transducer 130 is the component of the ultrasonic puncture structure 100 for emitting ultrasonic waves and receiving reflected ultrasonic signals. The puncture cannula 120 is partially fitted onto the puncture needle 110, the puncture needle 110 is movable relative to the puncture cannula 120, and the tip 111 of the puncture needle 110 can protrude from the end of the puncture cannula 120.

[0057] An ultrasonic transducer 130 is disposed within the puncture needle 110 and near the tip 111 of the puncture needle 110. Optionally, the ultrasonic transducer 130 is a miniature ultrasonic transducer. This facilitates the integration of the ultrasonic transducer 130 into the puncture needle 110 and reduces the space occupied by the ultrasonic transducer 130 within the puncture needle 110, without increasing the diameter of the puncture needle 110 and the puncture cannula 120, thus enabling the puncture needle 110 and the puncture cannula 120 to perform percutaneous puncture procedures.

[0058] During puncture, the tip 111 of the puncture needle 110 penetrates a small incision in the patient's skin and enters the patient's body, carrying the puncture cannula 120 and the ultrasound transducer 130 together. After entering the patient's body, the ultrasound transducer 130 emits ultrasound waves. When the ultrasound waves encounter special obstacles such as lesions during propagation, there will be a significant echo enhancement. The ultrasound transducer 130 can generate an ultrasound signal from the echo (hereinafter, the term "received ultrasound signal" will be used to represent "received echo") to locate the lesion.

[0059] The ultrasound transducer 130 can be electrically connected to the ultrasound imaging device 200, which can supply power to the ultrasound transducer 130 so that the ultrasound transducer 130 can emit ultrasound waves. At the same time, the ultrasound transducer 130 can also transmit the received ultrasound signals to the ultrasound imaging device 200, which can image the lesion site based on the received ultrasound signals.

[0060] The operator can perform puncture according to the imaging guidance of the ultrasound imaging device 200, manipulating the puncture needle 110 to move within the patient's body as guided by the imaging, allowing the puncture needle 110, carrying the puncture cannula 120, to move towards the lesion site. During this process, the ultrasound transducer 130 can transmit the received ultrasound signals to the ultrasound imaging device 200 in real time. When the puncture needle 110 enters the lesion site from normal tissue, the echo signal received by the ultrasound transducer 130 is significantly enhanced, indicating that the ultrasound signal received by the ultrasound transducer 130 is significantly enhanced, thereby determining whether the puncture cannula 120 has been placed correctly.

[0061] Because the ultrasonic transducer 130 is located close to the tip 111 of the puncture needle 110, the ultrasonic transducer 130 can accurately and in real time locate the position of the tip 111. Thus, once the puncture needle 110 is inserted into the lesion, the strength of the ultrasonic signal received by the ultrasonic transducer 130 can determine whether the tip 111 of the puncture needle 110 has penetrated the lesion, thereby determining whether the puncture cannula 120 has been placed correctly.

[0062] Once the puncture cannula 120 is in place, the puncture needle 110 is withdrawn from the puncture cannula 120, preserving the percutaneous channel established by the puncture cannula 120. In later diagnosis and treatment, the puncture cannula 120 can be used to administer medication or extract tissue from the lesion site, facilitating subsequent diagnosis and treatment of the lesion.

[0063] The ultrasonic puncture structure 100 of the above embodiment integrates an ultrasonic transducer 130 in the puncture needle 110. The ultrasonic waves emitted by the ultrasonic transducer 130 can monitor the lesion site in real time to guide the puncture needle 110 to accurately puncture the lesion site, thereby establishing a percutaneous channel from the puncture cannula 120 to the lesion site, which facilitates subsequent diagnosis and treatment. In this way, ultrasonic scanning can be performed inside the patient's body without the need for field scanning, which improves the percutaneous puncture positioning accuracy, shortens the operation time, and reduces medical costs.

[0064] See Figures 3 to 7 In one embodiment, the puncture needle 110 has an ultrasonic window 112 that extends radially into the inner cavity of the puncture needle 110 and is close to the needle tip 111, and the ultrasonic transducer 130 is located in the ultrasonic window 112. Figure 5 for Figure 3 The image shown is a magnified view of the ultrasonic puncture structure 100 at point A. Figure 6 for Figure 3 The top view of the ultrasonic puncture structure 100 shown. Figure 7 for Figure 6 The enlarged view of the ultrasonic puncture structure 100 at point B.

[0065] The puncture needle 110 has an ultrasonic window 112 near its tip 111. The ultrasonic window 112 penetrates the wall of the puncture needle 110 and connects the inner lumen of the puncture needle 110 to its outer side. After the ultrasonic transducer 130 is installed into the puncture needle 110, the ultrasonic transducer 130 can be exposed through the ultrasonic window 112. Furthermore, after the puncture needle 110 is installed into the puncture cannula 120, the tip 111 of the puncture needle 110 protrudes from the puncture cannula 120, and the ultrasonic window 112 also protrudes from the puncture cannula 120, so that the ultrasonic transducer 130 is exposed through the puncture cannula 120.

[0066] In this way, the walls of the puncture needle 110 and the puncture cannula 120 will not block the ultrasound waves. The ultrasound waves generated by the ultrasound transducer 130 can be transmitted into the patient's body through the ultrasound window 112 to locate the lesion. At the same time, the echo reflected from the lesion can be received by the ultrasound transducer 130 through the ultrasound window 112, so that the ultrasound transducer 130 can emit ultrasound waves and receive the reflected ultrasound signals.

[0067] In one embodiment, the emitting surface of the ultrasonic transducer 130 faces the ultrasonic window 112. In this way, the ultrasonic waves emitted by the ultrasonic transducer 130 can be transmitted into the patient's body through the ultrasonic window 112, and at the same time, the ultrasonic signals can be received through the ultrasonic window 112, avoiding the obstruction of the ultrasonic waves by the wall of the puncture needle 110.

[0068] In one embodiment, the ultrasonic transducer 130 is fixed to the ultrasonic window 112 by adhesive bonding. Adhesive bonding ensures that the ultrasonic transducer 130 is reliably fixed inside the puncture needle 110, preventing displacement of the ultrasonic transducer 130 and ensuring that the ultrasonic transducer 130 is aligned with and exposed through the ultrasonic window 112. Optionally, the ultrasonic transducer 130 is fixed to the puncture needle 110 using ultraviolet-curable adhesive.

[0069] See Figures 3 to 7 In one embodiment, there is one ultrasound window 112. Correspondingly, there is one ultrasound transducer 130, which is disposed in the puncture needle 110, with one ultrasound transducer 130 exposed through the ultrasound window 112. In this way, the ultrasound transducer 130 can transmit ultrasound waves and receive ultrasound signals through the ultrasound window 112.

[0070] Of course, in other embodiments of this application, there are multiple ultrasound windows 112, which are spaced apart along the axial and / or circumferential direction of the puncture needle 110. Each ultrasound window 112 corresponds to one ultrasound transducer 130. That is, the number of ultrasound transducers 130 is equal to the number of ultrasound windows 112. Each ultrasound transducer 130 emits ultrasound waves and receives ultrasound signals through its corresponding ultrasound window 112. This increases the imaging range and improves the accuracy of lesion localization.

[0071] In one embodiment of this application, the ultrasonic transducer 130 includes multiple ultrasonic array elements arranged in an array. That is, the ultrasonic transducer 130 has a micro-array structure. The multiple ultrasonic array elements are arranged in an array and exposed through the ultrasonic window 112. This increases the imaging range and improves positioning accuracy when multiple ultrasonic array elements perform scanning imaging. Of course, in other embodiments of this application, the ultrasonic transducer 130 may also include a single ultrasonic array element. That is, the ultrasonic transducer 130 has a micro-single-element structure.

[0072] See Figures 3 to 7 In one embodiment, the ultrasonic window 112 is square. The ultrasonic transducer 130 can be exposed through the square ultrasonic window 112. Further, the side length of the ultrasonic window 112 ranges from 0.3mm to 4.5mm. This ensures that the ultrasonic transducer 130 can be exposed through the ultrasonic window 112 to expose the puncture needle 110, reducing the obstruction of the ultrasonic transducer 130 by the tube wall of the puncture needle 110.

[0073] Of course, in other embodiments of this application, the shape of the ultrasound window 112 may be other than that of the ultrasound transducer 130, as long as the puncture needle 110 can be exposed through the ultrasound window 112. For example, the shape of the ultrasound window 112 may also be circular, elliptical, rectangular, or other regular or irregular shapes.

[0074] See Figures 3 to 7 In one embodiment, the puncture needle 110 includes a puncture tube body 113 and a needle tip 111. One end of the puncture tube body 113 is connected to the needle tip 111, and an ultrasound window 112 is disposed at the end of the puncture tube body 113 near the needle tip 111. The puncture tube body 113 is the main body of the puncture needle 110, and the needle tip 111 is the tip of the puncture needle 110, disposed at one end of the puncture tube body 113. During puncture, the needle tip 111 is inserted into the patient's body through a small incision in the patient's skin, and drives the puncture tube body 113 into the patient's body.

[0075] Furthermore, the ultrasound window 112 is located at the end of the puncture tube 113 near the needle tip 111, allowing the ultrasound window 112 to be positioned close to the needle tip 111. In this way, when the needle tip 111 pierces the lesion, the ultrasound transducer 130 can also approach or even pierce the lesion, thereby accurately determining whether the needle tip 111 and the puncture cannula 120 have reached the placement position, improving the accuracy of positioning.

[0076] See Figures 3 to 7 In one embodiment, the needle tip 111 is angled. That is, the needle tip 111 is a sharp, angled edge. This ensures the sharpness of the needle tip 111, making it easier for the puncture needle 110 to penetrate the patient's body.

[0077] See Figures 3 to 7 In one embodiment, the outer diameter of the puncture tube 113 is 0.3mm to 4.5mm. When the outer diameter of the puncture tube 113 is in the range of 0.3mm to 4.5mm, the diameter of the puncture needle 110 can be reduced, which is beneficial to the miniaturization design of the puncture needle 110.

[0078] See Figures 3 to 7 In one embodiment, the ultrasound window 112 is located at the inclined end of the needle tip 111. That is, the distance between the ultrasound window 112 and the needle tip 111 is as small as possible, so that the ultrasound window 112 is as close as possible to the needle tip 111. Specifically, setting the ultrasound window 112 at the end of the inclined opening of the needle tip 111 facilitates the determination of whether the needle tip 111 and the puncture cannula 120 have reached the placement position, improving positioning accuracy. Of course, in other embodiments of this application, the ultrasound window 112 may also be partially located on the inclined surface of the needle tip 111, facilitating the determination of whether the needle tip 111 and the puncture cannula 120 have reached the placement position, improving positioning accuracy.

[0079] See Figures 3 to 7 In one embodiment, the outer diameter of the puncture needle 110 is adapted to the inner diameter of the puncture cannula 120, and the puncture needle 110 and the puncture cannula 120 are coaxially arranged. That is, the outer diameter of the puncture needle 110 is approximately the same as the inner diameter of the puncture cannula 120, and the puncture needle 110 and the puncture cannula 120 are coaxially arranged.

[0080] The puncture needle 110 and the puncture cannula 120 are coaxial positioning needle tubes. In this way, after the puncture needle 110 is installed into the puncture cannula 120, the outer wall of the puncture needle 110 fits against the inner wall of the puncture cannula 120, which can prevent the puncture needle 110 from shaking in the puncture cannula 120 and ensure that the puncture needle 110 and the puncture cannula 120 can be accurately inserted into the patient's body.

[0081] See Figures 3 to 7 In one embodiment, the ultrasonic puncture structure 100 further includes a connecting cable 140, which connects the ultrasonic transducer 130 and the ultrasonic imaging device 200, and is partially located within the puncture needle 110. The connecting cable 140 is a power supply and signal transmission cable. One end of the connecting cable 140 is connected to the ultrasonic transducer 130, and the other end of the connecting cable 140 is connected to the ultrasonic imaging device 200.

[0082] The puncture needle 110 is hollow. After the connecting cable 140 is connected to the ultrasonic transducer 130, part of the connecting cable 140 is located inside the puncture needle 110, and part of the connecting cable 140 is located on the outside of the puncture needle 110, so as to connect to the ultrasonic imaging device 200. In this way, the ultrasonic imaging device 200 can supply power to the ultrasonic transducer 130 through the connecting cable 140, and the ultrasonic signal received by the ultrasonic transducer 130 can be transmitted to the ultrasonic imaging device 200 through the connecting cable 140.

[0083] See Figure 4 , Figures 8 to 10 In one embodiment, the ultrasonic transducer 130 includes a backing layer 131, a piezoelectric layer 132, a first matching layer 133, and a second matching layer 134 stacked together. The backing layer 131 is disposed on the connecting cable 140, the piezoelectric layer 132 is electrically connected to the connecting cable 140, and the second matching layer 134 is aligned with the ultrasonic window 112 of the puncture needle 110. Figure 8 for Figure 4 The diagram shows the connection between the connecting cable 140 and the ultrasonic transducer 130 in the ultrasonic puncture structure 100. Figure 9 for Figure 8 The front view showing the connection between the connecting cable 140 and the ultrasonic transducer 130 is shown. Figure 10 for Figure 8 A top view showing the connection between the connecting cable 140 and the ultrasonic transducer 130.

[0084] A backing layer 131 is disposed on the connecting cable 140. A piezoelectric layer 132 is disposed above the backing layer 131 and is electrically connected to the connecting cable 140. A first matching layer 133 is disposed above the piezoelectric layer 132, and a second matching layer 134 is disposed above the first matching layer 133. The backing layer 131 serves to support the installation, and the piezoelectric layer 132, the first matching layer 133, and the second matching layer 134 are supported and installed through the backing layer 131.

[0085] Simultaneously, the backing layer 131 can also absorb ultrasonic waves from the back of the piezoelectric layer 132. After the piezoelectric layer 132 is energized, both its front and back sides can emit ultrasonic waves. The ultrasonic waves from the back of the piezoelectric layer 132 are absorbed by the backing layer 131, while the ultrasonic waves from the front of the piezoelectric layer 132 are transitioned through the first matching layer 133 and the second matching layer 134, allowing the ultrasonic waves to be adapted to the impedance of the human body and thus propagate within the patient's body. When the ultrasonic waves contact the lesion site, they can enhance the echo, which can then be transmitted to the piezoelectric layer 132 through the second matching layer 134 and the first matching layer 133. This allows the piezoelectric layer 132 to receive the echo and generate ultrasonic signals to locate the lesion site.

[0086] In percutaneous puncture localization surgery, the ultrasonic puncture structure 100 of this application involves a puncture needle 110 piercing the patient's skin and entering the patient's body along with a puncture cannula 120. The ultrasonic transducer 130 within the puncture needle 110 emits ultrasonic waves within the patient's body and receives the reflected ultrasonic signals to locate the lesion. The ultrasonic transducer 130 feeds back the received ultrasonic signals to an ultrasonic imaging device 200, which creates an image based on the received ultrasonic signals to guide the surgeon in performing the puncture operation, ensuring that the puncture needle 110 and puncture cannula 120 accurately reach the lesion site. Subsequently, the puncture needle 110 is withdrawn, and the puncture cannula 120 establishes a percutaneous channel between the lesion and the percutaneous tissue, facilitating subsequent diagnosis and treatment.

[0087] The ultrasonic puncture structure 100 of this application integrates an ultrasonic transducer 130 in the puncture needle 110. The ultrasonic waves emitted by the ultrasonic transducer 130 can monitor the lesion site in real time to guide the puncture needle 110 to accurately puncture the lesion site, thereby establishing a percutaneous channel from the puncture cannula 120 to the lesion site, which facilitates subsequent diagnosis and treatment. In this way, ultrasonic scanning can be performed inside the patient's body without the need for field scanning, improving the percutaneous puncture positioning accuracy, shortening the operation time, and reducing medical costs.

[0088] See Figure 1 and Figure 2This application also provides an ultrasonic puncture system 10, including an ultrasonic imaging device 200 and an ultrasonic puncture structure 100 as described in any of the above embodiments. In the ultrasonic puncture structure 100, an ultrasonic transducer 130 is electrically connected to the ultrasonic imaging device 200. The ultrasonic imaging device 200 can supply power to the ultrasonic transducer 130 to emit ultrasonic waves. The ultrasonic transducer 130 can also receive ultrasonic signals and transmit them to the ultrasonic imaging device 200, which then forms an image based on the received ultrasonic signals.

[0089] The ultrasonic puncture system 10 of this application, after adopting the ultrasonic puncture structure 100 of the above embodiment, can monitor the lesion site in real time to guide the puncture needle 110 to accurately puncture the lesion site, thereby enabling the puncture cannula 120 to establish a percutaneous channel to the lesion site, which facilitates subsequent diagnosis and treatment. In this way, it is possible to perform ultrasound scanning in the patient's body without the need for field switching scanning, which improves the percutaneous puncture positioning accuracy, shortens the operation time, and reduces medical costs.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An ultrasonic puncture structure characterized by, include: Puncture needle; A puncture cannula is partially fitted over the outside of the puncture needle, and the puncture needle is movably disposed within the puncture cannula, allowing the tip of the puncture needle to protrude from the puncture cannula; and An ultrasonic transducer is disposed in the puncture needle and close to the tip of the puncture needle. The ultrasonic transducer is electrically connected to the ultrasonic imaging device of the ultrasonic puncture system to transmit ultrasonic signals to the ultrasonic imaging device.

2. The ultrasonic puncture structure according to claim 1, wherein The puncture needle has an ultrasonic window that extends radially into the inner cavity of the puncture needle and is close to the needle tip. The ultrasonic transducer is located in the ultrasonic window.

3. The ultrasonic puncture structure according to claim 2, wherein The emitting surface of the ultrasonic transducer faces the ultrasonic window; And / or, the ultrasonic transducer is fixed to the puncture needle by adhesive bonding; And / or, the number of ultrasound windows is one, or the number of ultrasound windows is multiple, the multiple ultrasound windows are arranged at intervals along the axial and / or circumferential direction of the puncture needle, and each ultrasound window corresponds to one ultrasound transducer.

4. The ultrasonic puncture structure according to claim 2, wherein The ultrasonic transducer includes one ultrasonic array element, or the ultrasonic transducer includes multiple ultrasonic array elements arranged in an array. And / or, the ultrasound window is square, and the side length of the ultrasound window ranges from 0.3mm to 4.5mm; or, the ultrasound window is circular, elliptical, or rectangular.

5. The ultrasonic puncture structure according to claim 2, wherein The puncture needle includes a puncture tube body and a needle tip, one end of the puncture tube body is connected to the needle tip, and the ultrasound window is located at the end of the puncture tube body near the needle tip.

6. The ultrasonic puncture structure according to claim 5, wherein The needle tip is set at an angle; And / or, the outer diameter of the puncture tube is 0.3mm to 4.5mm; And / or, the ultrasound window is located at the inclined end of the needle tip, or the ultrasound window is partially located on the inclined surface of the needle tip.

7. The ultrasonic puncture structure according to any one of claims 1 to 6, characterized by, The outer diameter of the puncture needle is adapted to the inner diameter of the puncture cannula, and the puncture needle and the puncture cannula are coaxially arranged.

8. The ultrasonic puncture structure according to any one of claims 1 to 6, characterized by, The ultrasonic puncture structure also includes a connecting cable that connects the ultrasonic transducer to the ultrasonic imaging device and is partially located in the puncture needle.

9. The ultrasonic puncture structure according to claim 8, wherein The ultrasonic transducer includes a backing layer, a piezoelectric layer, a first matching layer, and a second matching layer stacked together. The backing layer is disposed on the connecting cable, the piezoelectric layer is electrically connected to the connecting cable, and the second matching layer is aligned with the ultrasonic window of the puncture needle.

10. An ultrasound puncture system characterized by comprising: Includes an ultrasound imaging device and an ultrasound puncture structure as described in any one of claims 1 to 9, wherein the ultrasound transducer in the ultrasound puncture structure is electrically connected to the ultrasound imaging device. The ultrasonic imaging device can power the ultrasonic transducer to emit ultrasonic waves, and the ultrasonic transducer can also receive ultrasonic signals and transmit them to the ultrasonic imaging device, which then forms an image based on the received ultrasonic signals.

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