Puncture needle with enhanced ultrasonic visualization

Abstract

The utility model discloses a puncture needle with reinforced ultrasonic visualization function relates to case diagnosis auxiliary appliance technical field, including outer needle, the inner needle is movably inserted in the outer needle, the outer wall of outer needle is close to needle tip one section and is provided with circular reflection array, and the outer wall of outer needle is provided with fractal harmonic groove behind corresponding circular reflection array, and the ultrasonic wave is carried out diffuse reflection through circular recess, thereby improve the strength and directivity of echo signal, make ultrasonic wave can be more effectively received by probe, and ultrasonic wave signal will interact with fractal harmonic groove simultaneously, thereby the absorption and scattering effect of ultrasonic wave on the surface of puncture needle has been enhanced significantly. The puncture needle's visibility in ultrasonic image has been improved, and according to these information, the doctor can accurately carry out puncture operation, and the accuracy and safety of operation have been improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of diagnostic aids, specifically to a puncture needle with enhanced ultrasound imaging function. Background Technology

[0002] Ultrasound-guided biopsy is a crucial clinical method for obtaining pathological diagnoses. This technique, guided by real-time imaging, significantly improves the accuracy of the puncture while reducing potential complications. However, currently available biopsy needles have some significant shortcomings in ultrasound imaging. Particularly during large-angle punctures or surgeries on obese patients, the needle body and tip often appear blurry, severely impacting the precision and safety of the procedure.

[0003] Traditional puncture needles typically have a very smooth surface, which causes specular reflection of ultrasound waves on the needle surface. This results in a very weak and highly directional echo signal, making it difficult for the probe to effectively receive the ultrasound waves. This technical limitation not only restricts the performance of puncture needles in clinical applications but also poses a potential threat to patient safety during surgery. Therefore, we propose a puncture needle with enhanced ultrasound imaging capabilities. Utility Model Content

[0004] The purpose of this invention is to address the problem that traditional puncture needles are typically designed with very smooth surfaces, which causes specular reflection of ultrasound waves on the needle surface, resulting in very weak and highly directional echo signals. This makes it difficult for the probe to effectively receive the ultrasound waves. This technical deficiency not only limits the performance of puncture needles in clinical applications but also poses a potential threat to patient safety during surgery. This invention provides a puncture needle with enhanced ultrasound imaging capabilities.

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

[0006] A puncture needle with enhanced ultrasound imaging function includes an outer needle, an inner needle that is movably inserted into the outer needle, a circular reflective array is provided on the outer wall of the outer needle near the needle tip, and a fractal resonant groove is provided on the outer wall of the outer needle corresponding to the rear side of the circular reflective array.

[0007] Furthermore, the circular reflective array includes a plurality of circular grooves evenly distributed along the circumferential outer wall of the outer needle, and the circular grooves extend radially in multiple turns.

[0008] Furthermore, the circular grooves of the circular reflective array are filled with cadmium selenide / zinc sulfide core-shell quantum dots.

[0009] Furthermore, the fractal resonant groove includes a three-level Hilbert space-filling curve, with the first-level groove being 50 μm deep, the second-level groove being 100 μm deep, and the third-level groove being 200 μm deep.

[0010] Furthermore, the fractal resonant groove is engraved layer by layer on the surface of the outer needle using femtosecond laser two-photon polymerization technology.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This invention involves inserting an external needle into the biological tissue to be examined or treated, and then using an internal needle for pathological diagnosis. An ultrasonic transmitter emits ultrasonic signals, which, upon contact with the external needle, are diffusely reflected through a circular groove, thereby increasing the intensity and directionality of the echo signal. This allows the probe to receive the ultrasonic waves more effectively. Simultaneously, the ultrasonic signal interacts with the fractal resonant groove. Due to the unique design of the fractal resonant groove, it covers the entire frequency band of ultrasound diagnosis and achieves broadband acoustic impedance matching through a self-similar structure, significantly enhancing the absorption and scattering of ultrasonic waves on the surface of the puncture needle. This not only improves the visibility of the puncture needle in the ultrasound image but also allows the doctor to more clearly observe the specific location and condition of the puncture needle. After the ultrasonic signal is captured and processed by the receiving device, the doctor can view the location of the puncture needle, as well as the detailed structure and lesion of the surrounding tissue, in real time on the ultrasound display screen. Based on this information, the doctor can perform the puncture operation precisely, significantly improving the accuracy and safety of the surgery.

[0013] 2. This invention features a primary groove corresponding to a λ / 4 wavelength resonant frequency of 8MHz, a secondary groove forming a 12MHz resonance, enhanced reflection by intracavity standing waves, and a tertiary groove exciting 15MHz high-frequency scattering, covering the entire frequency band of ultrasound diagnosis. The self-similar structure achieves broadband acoustic impedance matching, significantly improving the clarity and resolution of ultrasound images. This design not only enhances the visibility of the puncture needle in ultrasound images but also allows doctors to more accurately locate and operate during ultrasound-guided puncture surgery, greatly improving the precision and safety of the procedure. Furthermore, this invention utilizes the characteristics of fractal structures to achieve broadband acoustic impedance matching by setting fractal resonant grooves on the outer wall of the outer needle, effectively reducing the reflection and scattering loss of ultrasound waves on the needle surface.

[0014] 3. The fractal resonant groove of this utility model uses femtosecond laser two-photon polymerization technology to carve fractal structures layer by layer on the surface of the outer needle, which significantly improves the processing accuracy, enables the design of the fractal resonant groove, and further enhances the ultrasonic imaging effect of the puncture needle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the needle body structure of this utility model;

[0016] Figure 2 This is a structural diagram of the fractal resonant groove of this utility model after it has been unfolded.

[0017] Reference numerals: 1. Outer needle; 2. Circular reflective array; 3. Inner needle; 4. Fractal resonant groove. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-2 This utility model provides a puncture needle with enhanced ultrasound imaging function, including an outer needle 1, an inner needle 3 movably inserted into the outer needle 1, a circular reflective array 2 is provided on the outer wall of the outer needle 1 near the needle tip, and a fractal resonant groove 4 is provided on the outer wall of the outer needle 1 corresponding to the rear side of the circular reflective array 2.

[0020] In this embodiment, preferably, the circular reflective array 2 includes a plurality of circular grooves evenly distributed along the outer circumference of the outer needle 1, and the circular grooves extend radially in multiple turns. The circular grooves diffusely reflect ultrasonic waves, thereby improving the intensity and directionality of the echo signal, so that the ultrasonic waves can be received more effectively by the probe.

[0021] In this embodiment, preferably, the circular groove of the circular reflective array 2 is filled with cadmium selenide / zinc sulfide core-shell quantum dots; second harmonic ultrasound signals are generated by 808nm near-infrared laser excitation, which further enhances the ultrasound imaging effect and improves the accuracy and safety of the surgery.

[0022] In this embodiment, preferably, the fractal resonant groove 4 includes a three-level Hilbert space-filling curve: a first-level groove with a depth of 50 μm, a second-level groove with a depth of 100 μm, and a third-level groove with a depth of 200 μm. The first-level groove corresponds to a λ / 4 wavelength resonant frequency of 8 MHz, the second-level groove forms a 12 MHz resonance, enhancing reflection through intracavity standing waves, and the third-level groove excites 15 MHz high-frequency scattering, covering the entire frequency band of ultrasound diagnosis. The self-similar structure achieves broadband acoustic impedance matching, significantly improving the clarity and resolution of ultrasound images. This design not only enhances the visibility of the puncture needle in ultrasound images but also enables doctors to more accurately locate and operate during ultrasound-guided puncture surgery, greatly improving the precision and safety of the procedure. Furthermore, by setting a fractal resonant groove on the outer wall of the outer needle, this invention utilizes the characteristics of the fractal structure to achieve broadband acoustic impedance matching, effectively reducing the reflection and scattering loss of ultrasound waves on the needle surface.

[0023] In this embodiment, preferably, the fractal resonant groove 4 is engraved layer by layer on the surface of the outer needle 1 using femtosecond laser two-photon polymerization technology, which significantly improves the processing accuracy, enables the design of the fractal resonant groove 4 to be realized, and further enhances the ultrasonic imaging effect of the puncture needle.

[0024] The working principle and usage of this invention are as follows: In use, the outer needle 1 is inserted into the biological tissue to be examined or treated, and pathological diagnosis is performed through the inner needle 2. An ultrasonic transmitter emits ultrasonic signals. When these signals come into contact with the outer needle 1, they are diffusely reflected through a circular groove, thereby increasing the intensity and directionality of the echo signal, allowing the probe to receive the ultrasonic waves more effectively. Simultaneously, the ultrasonic signals interact with the fractal resonant groove 4. Due to the unique design of the fractal resonant groove 4, it can cover the entire frequency band of ultrasound diagnosis and achieve broadband acoustic impedance matching through a self-similar structure, thus significantly enhancing the absorption and scattering effect of ultrasonic waves on the surface of the puncture needle. This not only improves the visibility of the puncture needle in the ultrasound image but also allows the doctor to more clearly observe the specific location and condition of the puncture needle. After the ultrasonic signal is captured and processed by the receiving device, the doctor can view the position of the puncture needle, as well as the detailed structure and lesion of the surrounding tissue, in real time on the ultrasound display screen. Based on this information, the doctor can perform the puncture operation precisely, significantly improving the accuracy and safety of the surgery.

[0025] 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 puncture needle with enhanced ultrasound imaging function, characterized in that: Includes an outer needle (1), an inner needle (3) is movably inserted into the outer needle (1), a circular reflective array (2) is provided on the outer wall of the outer needle (1) near the needle tip, and a fractal resonant groove (4) is provided on the outer wall of the outer needle (1) corresponding to the rear side of the circular reflective array (2).

2. The puncture needle with enhanced ultrasound imaging function according to claim 1, characterized in that: The circular reflective array (2) includes a plurality of circular grooves evenly distributed along the circumferential outer wall of the outer pin (1), and the circular grooves extend radially in multiple turns.

3. A puncture needle with enhanced ultrasound imaging function according to claim 2, characterized in that: The circular grooves of the circular reflective array (2) are filled with cadmium selenide / zinc sulfide core-shell quantum dots.

4. A puncture needle with enhanced ultrasound imaging function according to claim 1, characterized in that: The fractal resonant groove (4) includes a three-level Hilbert space-filling curve, with the first-level groove being 50 μm deep, the second-level groove being 100 μm deep, and the third-level groove being 200 μm deep.

5. A puncture needle with enhanced ultrasound imaging function according to claim 4, characterized in that: The fractal resonant groove (4) is engraved with a fractal structure layer by layer on the surface of the outer needle (1) using femtosecond laser two-photon polymerization technology.

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