A biopsy needle based on triangle groove enhanced ultrasonic visualization

Abstract

The utility model discloses a kind of biopsy needle based on triangle groove enhanced ultrasonic visualization, it is related to medical instrument technical field, including outer needle and the visualization structure being set to its front end, the visualization structure includes the multiple triangle grooves being evenly distributed along the outer needle circumference, each recess axial extension length is 3-8mm, depth is 1 / 3-1 / 2 of needle wall thickness, by ultrasonic equipment, ultrasonic wave is emitted to patient body, when ultrasonic wave meets the outer needle of the utility model, scattering and reflection will occur at triangle groove, the scattering and reflection intensity of ultrasonic wave is significantly improved, to form clear and visible visualization effect in ultrasonic image, the recognition and accuracy of puncture operation are significantly improved. Furthermore, the design of the biopsy needle also optimizes the operation process in surgical procedure, reduces the difficulty of operation, improves the operation experience of doctor.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a biopsy needle based on triangular groove-enhanced ultrasound imaging. Background Technology

[0002] In clinical practice, ultrasound-guided biopsy has become a key method for obtaining pathological diagnoses. This technique, guided by real-time imaging, greatly improves the accuracy of the biopsy procedure and effectively reduces the risk of complications during the procedure. However, currently available biopsy needles have some significant shortcomings in ultrasound imaging, especially during large-angle biopsy procedures or when dealing with obese patients. The needle body and tip often become blurry, which undoubtedly seriously affects the accuracy and safety of the procedure.

[0003] Traditional biopsy needles typically have a smooth surface, which causes specular reflection of ultrasound waves on the needle surface, resulting in weak and highly directional echo signals. This characteristic makes it difficult for the probe to effectively receive the ultrasound waves, thus affecting the image quality during the puncture process and limiting the precision and safety of the procedure. To address this, we propose a biopsy needle based on triangular groove-enhanced ultrasound imaging. Utility Model Content

[0004] The purpose of this invention is to address the problem that traditional puncture needles typically have smooth surfaces, which cause specular reflection of ultrasound waves on the needle surface, resulting in weak echo signals with strong directionality. This characteristic makes it difficult for the probe to effectively receive the ultrasound waves, thus affecting the image quality during the puncture process and limiting the precision and safety of the surgery. This invention provides a biopsy needle based on triangular groove-enhanced ultrasound imaging.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A biopsy needle based on triangular groove enhanced ultrasound imaging includes an outer needle and a imaging structure disposed at its front end. The imaging structure includes a plurality of triangular grooves uniformly distributed along the circumference of the outer needle. The axial extension length of each groove is 3-8 mm, and the depth is 1 / 3-1 / 2 of the needle wall thickness.

[0007] Furthermore, the triangular groove adopts an equilateral triangle structure with a vertex angle of 50°-70° and a 0.1-0.3mm rounded corner transition at the bottom of the groove.

[0008] Furthermore, the triangular grooves are arranged in a spiral array along the outer needle axis, with a spiral angle of 15°-45° and an axial spacing of 0.5-1.5mm between adjacent triangular grooves.

[0009] Furthermore, a distal groove group is provided in the 10-15mm area of ​​the front end of the outer needle, wherein the groove depth of the distal groove group is increased by 20%-40% compared with the triangular groove.

[0010] Furthermore, an ultrasonic reflection enhancement layer is provided on the inner surface of the triangular groove. The ultrasonic reflection enhancement layer is a titanium-based composite coating with a thickness of 10-30 μm, and the titanium-based composite coating contains micron-sized zirconium dioxide particles.

[0011] Furthermore, the outer needle tip is provided with a needle tip imaging structure, which includes 3-5 triangular grooves with varying depths, the groove depth gradually decreasing from the needle tip to the proximal end, forming a gradient reflection interface.

[0012] Furthermore, the radial cross-section of the triangular groove has an asymmetrical structure, with the angle between the sidewall of the triangular groove near the probe and the axis of the needle body being 30°-45°, and the angle between the sidewall of the triangular groove on the back probe and the axis of the needle body being 60°-75°.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This invention allows doctors to transmit ultrasound waves into the patient's body using an ultrasound device. When the ultrasound waves encounter the external needle of this invention, they are scattered and reflected at the triangular groove, significantly enhancing the intensity of scattering and reflection. This results in a clearly visible imaging effect in the ultrasound image, significantly improving the identification and accuracy of the puncture procedure. Furthermore, the design of this biopsy needle optimizes the surgical procedure, reduces the difficulty of the surgery, and improves the doctor's experience.

[0015] 2. The 50°-70° apex angle of this invention can increase the echo intensity by 40%. By optimizing the ultrasonic wave scattering angle by limiting the geometric parameters of the triangular groove, the clarity of the ultrasonic image is significantly enhanced.

[0016] 3. The spiral array design of this invention ensures that a triangular groove is directly facing the ultrasound probe at any puncture angle, effectively avoiding blind spots in ultrasound imaging and improving the accuracy and safety of the puncture operation. The spiral angle of 15°-45° and the axial spacing of 0.5-1.5mm ensure sufficient ultrasound scattering effect while also guaranteeing the mechanical strength and puncture performance of the biopsy needle. Attached Figure Description

[0017] Fig. 1 This is a structural diagram of the outer needle surface of this utility model;

[0018] Fig. 2 This is a partial cross-sectional view of the triangular groove of this utility model.

[0019] Reference numerals: 1. Outer needle; 2. Triangular groove; 3. Ultrasonic reflection enhancement layer; 4. Needle tip imaging structure; 5. Distal groove group. Detailed Implementation

[0020] 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.

[0021] Please see Figs. 1-2 This utility model provides a biopsy needle based on triangular groove enhanced ultrasound imaging, including an outer needle 1 and an imaging structure disposed at its front end. The imaging structure includes a plurality of triangular grooves 2 evenly distributed along the circumference of the outer needle. The axial extension length of each groove is 3-8 mm, and the depth is 1 / 3-1 / 2 of the needle wall thickness.

[0022] In this embodiment, preferably, the triangular groove 2 adopts an equilateral triangle structure with a vertex angle of 50°-70° and a 0.1-0.3mm rounded corner transition at the bottom. The 50°-70° vertex angle can increase the echo intensity by 40%. By optimizing the ultrasonic wave scattering angle by limiting the geometric parameters of the triangular groove 2, the clarity of the ultrasonic image is significantly enhanced. Furthermore, the 0.1-0.3mm rounded corner transition design not only improves the manufacturing precision of the triangular groove 2 but also effectively avoids potential damage to surrounding tissues caused by sharp corners, enhancing the safety of the biopsy process.

[0023] In this embodiment, preferably, the triangular grooves 2 are arranged in a spiral array along the axial direction of the outer needle 1, with a spiral angle of 15°-45° and an axial spacing of 0.5-1.5mm between adjacent triangular grooves 2. This spiral array design ensures that at any puncture angle, a triangular groove 2 is directly facing the ultrasound probe, effectively avoiding ultrasound imaging blind spots and improving the accuracy and safety of the puncture operation. The 15°-45° spiral angle and 0.5-1.5mm axial spacing design ensure sufficient ultrasound scattering effect while also guaranteeing the mechanical strength and puncture performance of the biopsy needle.

[0024] In this embodiment, preferably, a distal groove group 5 is provided in the 10-15mm area at the front end of the outer needle 1, wherein the groove depth of the distal groove group 5 is increased by 20%-40% compared with the triangular groove 2; the dual imaging structure provides differentiated imaging signals for tissues of different depths, so that the puncture needle has a more significant imaging effect in ultrasound images, especially in deep tissues, which improves the recognition and accuracy of puncture operation.

[0025] In this embodiment, preferably, an ultrasonic reflection enhancement layer 3 is disposed on the inner surface of the triangular groove 2. The ultrasonic reflection enhancement layer 3 is a titanium-based composite coating with a thickness of 10-30 μm, and the titanium-based composite coating contains micron-sized zirconium dioxide particles. The composite coating increases the ultrasonic reflectivity to 2.3 times that of ordinary stainless steel, effectively enhancing the scattering and reflection of ultrasonic signals, and further improving the visibility of the triangular groove 2 in ultrasound images. This design not only optimizes the clarity of ultrasound images but also ensures the consistency of imaging of the biopsy needle at different tissue depths, providing doctors with more precise and reliable puncture guidance, thereby reducing surgical risks and improving the efficiency and success rate of biopsy operations.

[0026] In this embodiment, preferably, the tip of the outer needle 1 is provided with a needle tip imaging structure 4, which includes 3-5 triangular grooves with gradually varying depths. The groove depth gradually decreases from the needle tip towards the proximal end, forming a gradient reflection interface. The gradient needle tip structure achieves a precise positioning error of ≤0.5mm for the needle tip, significantly improving the accuracy and safety of puncture. This design utilizes triangular grooves of different depths to generate differentiated ultrasonic reflection signals, making the needle tip more prominent in ultrasound imaging, and clearly identifiable even in complex or deep tissues, greatly reducing the risk of errors during surgery.

[0027] In this embodiment, preferably, the radial cross-section of the triangular groove 2 is asymmetrical. The angle between the sidewall of the triangular groove 2 near the probe and the needle axis is 30°-45°, while the angle between the sidewall of the triangular groove 2 on the back of the probe and the needle axis is 60°-75°. This asymmetrical groove wall design significantly enhances the contrast during lateral puncture, ensuring clear ultrasound imaging even at complex puncture angles. This improves the flexibility and applicability of the procedure, resulting in more three-dimensional and clearer ultrasound imaging of the biopsy needle.

[0028] The working principle and usage procedure of this invention are as follows: During use, the doctor transmits ultrasound waves into the patient's body through an ultrasound device. When the ultrasound waves encounter the external needle 1 of this invention, they are scattered and reflected at the triangular groove 2. The intensity of scattering and reflection of the ultrasound waves is significantly enhanced, resulting in a clearly visible imaging effect in the ultrasound image, significantly improving the identification and accuracy of the puncture operation. In addition, the design of this biopsy needle optimizes the operation procedure, reduces the difficulty of the surgery, and improves the doctor's operating experience.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A biopsy needle based on triangular groove-enhanced ultrasound imaging, characterized in that: It includes an outer needle (1) and a developing structure disposed at its front end. The developing structure includes a plurality of triangular grooves (2) evenly distributed along the circumference of the outer needle. Each groove has an axial extension length of 3-8 mm and a depth of 1 / 3-1 / 2 of the needle wall thickness.

2. The biopsy needle based on triangular groove enhanced ultrasound imaging according to claim 1, characterized in that: The triangular groove (2) adopts an equilateral triangle structure with a vertex angle of 50°-70° and a 0.1-0.3mm rounded corner transition at the bottom of the groove.

3. The biopsy needle based on triangular groove enhanced ultrasound imaging according to claim 1, characterized in that: The triangular grooves (2) are arranged in a spiral array along the axial direction of the outer needle (1), with a spiral angle of 15°-45° and an axial spacing of 0.5-1.5mm between adjacent triangular grooves (2).

4. A biopsy needle based on triangular groove enhanced ultrasound imaging according to claim 1, characterized in that: The outer needle (1) has a distal groove group (5) in the 10-15mm area at the front end, wherein the groove depth of the distal groove group (5) is 20%-40% greater than that of the triangular groove (2).

5. A biopsy needle based on triangular groove enhanced ultrasound imaging according to claim 1, characterized in that: An ultrasonic reflection enhancement layer (3) is provided on the inner surface of the triangular groove (2). The ultrasonic reflection enhancement layer (3) is a titanium-based composite coating with a thickness of 10-30 μm, and the titanium-based composite coating contains micron-sized zirconium dioxide particles.

6. A biopsy needle based on triangular groove enhanced ultrasound imaging according to claim 1, characterized in that: The tip of the outer needle (1) is provided with a needle tip imaging structure (4), which includes 3-5 triangular grooves with varying depths, the groove depth gradually decreasing from the tip to the proximal end.

7. A biopsy needle based on triangular groove-enhanced ultrasound imaging according to claim 1, characterized in that: The radial cross section of the triangular groove (2) is asymmetrical. The angle between the side wall of the triangular groove (2) near the probe and the axis of the needle body is 30°-45°, and the angle between the side wall of the triangular groove (2) on the back probe and the axis of the needle body is 60°-75°.

Images