An interventional puncture needle

Abstract

This utility model discloses an interventional puncture needle, relating to the field of medical device technology. It includes a needle hub and a needle tube. One end of the needle tube is fixedly connected to the needle hub, and the other end is the puncture end. The outer wall of the needle tube is provided with three sections of composite texture. The outer wall of the puncture end of the needle tube has a double-helix cross-shaped groove. The outer wall of the middle section of the needle tube has a reverse-interlaced variable-pitch spiral pattern. The outer wall of the section of the needle tube near the needle hub has a wavy groove. The double-helix cross-shaped groove, the reverse-interlaced variable-pitch spiral pattern, and the wavy groove on the outer wall of the needle tube can generate obvious echo signals under the action of ultrasound. These echo signals form a clear imaging effect in the ultrasound image, significantly improving the clarity and stability of ultrasound imaging. Furthermore, the wavy groove can reduce needle tip stress and improve the bending strength of the needle tube, providing a more precise and safer tool for interventional medical treatment.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an interventional puncture needle. Background Technology

[0002] In numerous interventional medical procedures, the puncture needle plays an indispensable role as a fundamental and crucial medical tool. Especially in ultrasound-guided puncture procedures, the imaging effect of the puncture needle is vital for ensuring precise positioning. However, currently available puncture needles have some shortcomings in terms of ultrasound imaging performance, such as insufficient clarity, inconsistent signal strength, and even instability. These problems can affect the accuracy and safety of the puncture. Therefore, there is an urgent need to develop a new type of puncture needle that can significantly improve the clarity and stability of ultrasound imaging, thereby playing a vital role in enhancing the accuracy and safety of puncture procedures. Utility Model Content

[0003] The purpose of this invention is to provide an interventional puncture needle to address the problems of unsatisfactory imaging effect and unstable imaging signal in existing puncture needles for ultrasound imaging.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] An interventional puncture needle includes a needle hub and a needle tube. One end of the needle tube is fixedly connected to the needle hub, and the other end is the puncture end. The outer wall of the needle tube is provided with three-section composite textures. The outer wall of the puncture end of the needle tube is provided with a double-helix cross-shaped groove. The outer wall of the middle section of the needle tube is provided with a reverse staggered variable pitch spiral texture. The outer wall of the section of the needle tube near the needle hub is provided with a wavy groove.

[0006] Furthermore, the depth of the double-helix cross-shaped groove is 0.05mm-0.2mm, the width is 0.1mm-0.5mm, and the spacing between adjacent helical lines is 0.5mm-2mm.

[0007] Furthermore, the reverse staggered variable pitch spiral pattern includes two reverse staggered three-dimensional spiral grooves. The grooves have a gradually changing pitch along the axial direction, with a pitch of 2mm near the puncture end and 0.5mm near the needle seat end, forming a conical spiral bundle structure. The groove cross-section is trapezoidal, and the upper edge of the trapezoidal groove is cut with arc-shaped chamfers on both sides. The groove depth is 0.05-0.15mm, the bottom width is 0.1-0.3mm, the top width is 0.2-0.5mm, and the sidewall inclination angle is 30°-45°.

[0008] Furthermore, the wavy grooves are staggered arc-shaped grooves with a wavelength of 1 mm and an amplitude of 0.2 mm.

[0009] Furthermore, the needle is made of medical-grade stainless steel, and its surface is polished and then processed with double-helix cross-shaped grooves, reverse staggered variable pitch spiral patterns, and wavy groove patterns.

[0010] Furthermore, the double-helix cross groove, the reverse staggered variable pitch spiral pattern, and the wavy groove pattern are formed by one or more methods, namely laser engraving and chemical etching.

[0011] Furthermore, the outer wall of the needle is engraved with length marking grooves at equal intervals.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This invention utilizes ultrasonic scanning. The double-helix cross-shaped grooves, reverse-interlaced variable-pitch spiral patterns, and wavy grooves on the outer wall of the needle tube generate significant echo signals under ultrasonic waves. These echo signals form a clear imaging effect in the ultrasonic image. The double-helix cross-shaped grooves enhance the visibility of the puncture needle in the ultrasonic image, while the spiral patterns enhance the ultrasonic reflection signal, especially improving the dynamic tracking capability of the needle tip, allowing doctors to more accurately locate the puncture needle. The reverse-interlaced variable-pitch spiral patterns not only increase the clarity of the ultrasonic image but also generate multiple reflection interfaces through their conical spiral bundle structure, increasing the intensity of the ultrasonic echo and enhancing the dynamic tracking of the needle tip. This allows the puncture needle to adapt more easily to tissue changes during insertion, reducing resistance and improving the smoothness of the puncture. The wavy grooves enhance soft tissue penetration imaging through scattering, making the imaging effect of soft tissue locations more reliable, significantly improving the clarity and stability of ultrasonic imaging. Furthermore, the wavy grooves can reduce needle tip stress and improve the bending strength of the needle tube, providing a more precise and safer tool for interventional medical treatment.

[0014] 2. The medical stainless steel material of this utility model has good biocompatibility and mechanical properties. The groove is processed after surface polishing, which can ensure the processing accuracy and surface quality of the groove. The spiral pattern is reduced by laser engraving and chemical etching to reduce the risk of material deformation and prevent leakage.

[0015] 3. The length marking grooves evenly spaced on the outer wall of the needle tube of this utility model provide doctors with an intuitive reference for puncture depth, which helps doctors to accurately control the puncture depth during surgery and avoid unnecessary tissue damage. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a structural diagram of the double-helix cross-shaped groove of this utility model;

[0018] Figure 3 This is a diagram of the reverse-interlaced variable pitch spiral pattern structure of this utility model;

[0019] Figure 4 This is a diagram of the wave-shaped groove structure of this utility model.

[0020] Reference numerals: 1. Needle base; 2. Needle tube; 3. Double helix cross groove; 4. Reverse staggered variable pitch spiral pattern; 5. Wavy groove pattern. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-4 This utility model provides an interventional puncture needle, including a needle seat 1 and a needle tube 2. One end of the needle tube 2 is fixedly connected to the needle seat 1, and the other end is the puncture end. The outer wall of the needle tube 2 is provided with three-section composite texture. The outer wall of the puncture end of the needle tube 2 is provided with a double helical cross-shaped groove 3. The outer wall of the middle section of the needle tube 2 is provided with a reverse interlaced variable pitch spiral texture 4. The outer wall of the section of the needle tube 2 near the needle seat 1 is provided with a wavy groove 5.

[0023] In this embodiment, preferably, the depth of the double-helix cross-shaped groove 3 is 0.05mm-0.2mm, the width is 0.1mm-0.5mm, and the spacing between adjacent helical lines is 0.5mm-2mm. These dimensional parameters are optimized to effectively enhance the imaging effect without significantly affecting the strength and puncture performance of the needle tube 2. By optimizing the texture design of the needle tube surface, not only is the imaging clarity of the puncture needle in the ultrasound image significantly improved, but its stability and smoothness in actual operation are also enhanced.

[0024] In this embodiment, preferably, the reverse-interlaced variable-pitch spiral groove 4 includes two reverse-interlaced three-dimensional spiral grooves. The grooves have a gradually changing pitch along the axial direction, with a pitch of 2mm near the puncture end and 0.5mm near the needle seat end, forming a conical spiral bundle structure. The groove cross-section is trapezoidal, and the upper edge of the trapezoidal groove is cut with arc-shaped chamfers on both sides. The groove depth is 0.05-0.15mm, the bottom width is 0.1-0.3mm, the top width is 0.2-0.5mm, and the sidewall inclination angle is 30°-45°. These dimensional parameters are optimized to effectively enhance the imaging effect without significantly affecting the strength and puncture performance of the needle tube 2.

[0025] In this embodiment, preferably, the wavy groove 5 is an interlaced arc-shaped groove with a wavelength of 1 mm and an amplitude of 0.2 mm. These dimensional parameters are optimized to effectively enhance the imaging effect without significantly affecting the strength and puncture performance of the needle tube 2.

[0026] In this embodiment, preferably, the needle tube 2 is made of medical-grade stainless steel, and its surface is polished before being machined with double-helix cross-shaped grooves 3, reverse staggered variable pitch spiral patterns 4, and wavy groove patterns 5. Medical-grade stainless steel has good biocompatibility and mechanical properties, and the surface polishing before machining the grooves can ensure the machining accuracy and surface quality of the grooves.

[0027] In this embodiment, preferably, the double-helix cross-shaped groove 3, the reverse-interlaced variable-pitch spiral pattern 4, and the wavy groove pattern 5 are formed by one or more methods, namely laser engraving and chemical etching. The spiral pattern reduces the risk of material deformation and prevents leakage through laser engraving and chemical etching.

[0028] In this embodiment, preferably, the outer wall of the needle tube 2 is engraved with length marking grooves at equal intervals; these grooves provide doctors with an intuitive reference for puncture depth, which helps doctors to accurately control the puncture depth during surgery and avoid unnecessary tissue damage.

[0029] The working principle and usage of this invention are as follows: During use, through ultrasonic scanning, the double-helix cross-shaped grooves 3, the reverse-interlaced variable-pitch spiral patterns 4, and the wavy grooves 5 on the outer wall of the needle tube 2 can generate obvious echo signals under the action of ultrasound. These echo signals form a clear imaging effect in the ultrasound image. The design of the double-helix cross-shaped grooves 3 enhances the visibility of the puncture needle in the ultrasound image, and the spiral pattern enhances the ultrasound reflection signal, especially improving the dynamic tracking ability of the needle tip, allowing the doctor to more accurately locate the position of the puncture needle. The reverse-interlaced variable-pitch spiral patterns 4 not only increase the clarity of the ultrasound image, but also generate multiple reflection interfaces through its conical spiral bundle structure, increasing the intensity of the ultrasound echo and enhancing the dynamic tracking of the needle tip. This allows the puncture needle to more easily adapt to tissue changes during insertion, reducing resistance and improving the smoothness of the puncture. The wavy groove 5 enhances soft tissue penetration imaging through scattering, making the imaging effect of soft tissue locations more reliable and significantly improving the clarity and stability of ultrasound imaging. Furthermore, the wavy groove 5 can reduce needle tip stress and improve the bending strength of the needle tube 2, providing a more precise and safe tool for interventional medical treatment.

[0030] 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. An interventional puncture needle, characterized by: The application relates to a needle cannula, which comprises a needle seat (1) and a needle tube (2), one end of the needle tube (2) is fixedly connected with the needle seat (1), the other end is a puncture end, three-section composite lines are arranged on the outer wall of the needle tube (2), a double-helix cross-shaped groove (3) is formed on the outer wall of the puncture end of the needle tube (2), a reverse staggered variable-pitch helical line (4) is formed on the middle section of the outer wall of the needle tube (2), and a wave-shaped groove (5) is formed on the outer wall of the section of the needle tube (2) close to the needle seat (1).

2. An interventional puncture needle according to claim 1, characterized in that: The depth of the double-helix cross-shaped groove (3) is 0.05mm-0.2mm, the width is 0.1mm-0.5mm, and the interval between adjacent helical lines is 0.5mm-2mm.

3. An interventional puncture needle according to claim 1, characterized in that: The reverse staggered variable-pitch helical line (4) comprises two reverse staggered three-dimensional helical grooves, the grooves have a gradually-changing pitch along the axial direction, the pitch near the puncture end is 2mm, the pitch near the needle seat end is 0.5mm, a conical helical beam structure is formed, the cross section of the groove is a trapezoidal groove, arc-shaped chamfers are formed on the two sides of the upper edge of the trapezoidal groove, the groove depth is 0.05-0.15mm, the groove bottom width is 0.1-0.3mm, the top width is 0.2-0.5mm, and the side wall inclination angle is 30-45 degrees.

4. An interventional puncture needle according to claim 1, characterized in that: The wave-shaped groove (5) is an arc-shaped line groove which is staggered and distributed, the wavelength is 1mm, and the amplitude is 0.2mm.

5. An interventional puncture needle according to claim 1, characterized in that: The needle tube (2) is made of medical stainless steel material, the surface is polished, and then the double-helix cross-shaped groove (3), the reverse staggered variable-pitch helical line (4) and the wave-shaped groove (5) are processed.

6. An interventional puncture needle according to claim 5, characterized in that: The double-helix cross-shaped groove (3), the reverse staggered variable-pitch helical line (4) and the wave-shaped groove (5) are processed by one or more of laser engraving and chemical etching.

7. An interventional puncture needle according to claim 1, characterized in that: Length identification ring grooves are equidistantly drawn on the outer wall of the needle tube (2).

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