Ultrasonic-guided high-visualization minimally invasive needle knife

Abstract

The application relates to the field of minimally invasive interventional medical instruments, and particularly relates to an ultrasonic-guided high-brightening minimally invasive needle knife, which comprises a needle handle part, a needle body part, a spiral micro-etching groove, a needle blade part, a needle tip part and a needle core, the needle tip part is a 30-degree chamfered blunt round structure, the end face is provided with a micron-level pyramid-shaped ultrasonic developing dot array, and the side face is provided with symmetrical micro-guiding grooves; the surface of the needle body part is provided with a continuous spiral micro-etching groove and an equidistant annular developing ring; the pyramid-shaped developing dot array of the needle tip part realizes high-brightening, the spiral micro-etching groove of the needle body part ensures that the whole process can be visualized at any angle, the annular developing ring provides quantitative depth marks, the problems of "poor developing and blind positioning" of the traditional needle knife are completely solved, the needle tip is not lost under ultrasonic, the needle body has no breakpoints, the 30-degree chamfered blunt round needle tip and the blunt corner design at both ends of the blade effectively avoid blood vessel and nerve injury; the solid needle core seals the needle channel, reduces the risk of subcutaneous hemorrhage, tissue incarceration and infection, and the incidence of complications is significantly reduced.

Description

Technical Field

[0001] This invention relates to the field of minimally invasive interventional medical device technology, specifically to an ultrasound-guided, highly radiopaque minimally invasive needle knife. Background Technology

[0002] Needle knife therapy is an important minimally invasive interventional treatment method, widely used in the treatment of soft tissue injuries, pain syndromes, and other diseases. However, current ultrasound-guided clinical applications of needle knives have significant technical limitations, severely restricting treatment safety and precision.

[0003] Poor ultrasound imaging and unclear positioning: Traditional needle knife needle tip and needle body lack special ultrasound imaging design. The needle tip is easily "lost" in the ultrasound image, and the needle body is not displayed continuously. Especially when the needle is inserted at an angle, it is difficult to accurately judge the position of the needle tip and the depth of insertion. Relying on the doctor's experience, it is easy to cause treatment deviation.

[0004] Insufficient safety and high risk of complications: Traditional needle knives have sharp needle tips and blades without blunting treatment, which can easily scratch important tissues such as blood vessels and nerves during puncture and release; without a needle core sealing structure, the open needle tract can easily lead to complications such as tissue entrapment, subcutaneous bleeding, and infection.

[0005] Depth control lacks visual basis: There are no clear depth marks on the needle surface, and the needle depth depends entirely on the doctor's feel and experience. It is impossible to achieve quantitative control. When treating deep tissues, it is easy to cause insufficient loosening or excessive damage.

[0006] Poor ease of operation: The needle handle is mostly a smooth cylindrical structure, which requires two hands to operate and fix under ultrasound guidance. In addition, some needle handle materials are prone to ultrasonic reflection interference, which affects the clarity of the image and increases the difficulty of operation.

[0007] Existing technologies have not addressed the clinical needs of ultrasound guidance by achieving a synergistic design of "high contrast enhancement + high safety + precise positioning + convenient operation." Therefore, an ultrasound-guided, high-contrast, minimally invasive needle knife technique is proposed. Summary of the Invention

[0008] In view of this, the present invention provides an ultrasound-guided, highly radiopaque minimally invasive needle knife to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0009] The technical solution of this invention is implemented as follows: An ultrasound-guided, highly radiopaque minimally invasive needle knife includes a needle handle, a needle body, a spiral micro-groove, a needle blade, a needle tip, and a needle core. The needle tip has a 30° obliquely cut blunt rounded structure, with a micron-level pyramid-shaped ultrasonic radiopaque array on the end face and symmetrical micro-guided grooves on the side. The surface of the needle body has continuous spiral micro-grooves and equidistant annular radiopaque rings. The needle blade is a short, flat, straight blade with blunted rounded corners at both ends. The needle handle has a matte, non-slip double-wing structure. The needle core is a solid, sealed structure that fits flush with the needle tip surface. An insertion hole is provided at the bottom of the needle handle, and the insertion hole communicates with the needle body.

[0010] More preferably, the blunt radius of the needle tip is 0.05mm to 0.15mm, and the height of the pyramid-shaped dot matrix is ​​20μm to 50μm, for forming ultrasonically strong reflective high-brightness imaging points.

[0011] More preferably, the spiral micro-groove is 1mm to 3mm in diameter, the groove depth is 0.02mm to 0.05mm, and the annular developing ring is 5mm in diameter.

[0012] More preferably, the effective blade length of the needle blade is 0.5mm to 1.0mm, and the radius of the rounded corners at both ends of the blade edge is R0.05mm to R0.1mm.

[0013] More preferably, the diameter of the needle body is 0.6mm, 0.8mm, or 1.0mm, and the length of the needle body is 50mm, 75mm, or 100mm.

[0014] More preferably, the needle body is made of medical-grade 316LVM low-nickel stainless steel, and its surface has an electrochemical polishing layer and a hydrophilic coating.

[0015] More preferably, the needle handle is made of medical matte ABS material, which does not produce ultrasonic reflection interference.

[0016] More preferably, the bottom of the needle core is fixedly connected to a handle, and the needle core is a solid structure that seals the needle channel during puncture to prevent tissue embedding and bleeding.

[0017] More preferably, the needle knife is a disposable sterile structure, sterilized with ethylene oxide.

[0018] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions:

[0019] I. The pyramid-shaped imaging array at the needle tip of this invention achieves high-brightness imaging, while the spiral micro-grooves on the needle body ensure full visibility at any angle. The annular imaging ring provides quantitative depth marking, completely solving the problems of "poor imaging and blind positioning" in traditional needle knives. The needle tip is not lost under ultrasound and there are no breaks in the needle body. The 30° obliquely cut blunt rounded needle tip and the blunt rounded corners at both ends of the cutting edge effectively avoid damage to blood vessels and nerves. The solid needle core seals the needle channel, reducing the risk of subcutaneous bleeding, tissue impaction, and infection, and significantly reducing the incidence of complications.

[0020] Second, the annular imaging ring of this invention provides quantitative markings with a 5mm spacing, making the needle insertion depth visible and quantifiable, no longer relying on the doctor's experience, greatly improving treatment consistency and accuracy, adapting to the treatment needs of different tissue layers, and the matte anti-slip double-winged needle handle is easy to operate with one hand without ultrasonic reflection interference; the multi-size design is suitable for treatment of superficial and deep tissues throughout the body, with wide clinical applicability.

[0021] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Fig. 1 This is a structural diagram of the present invention;

[0024] Fig. 2 This is a structural diagram from another perspective of the present invention;

[0025] Fig. 3 This is a structural diagram of another embodiment of the present invention.

[0026] Reference numerals: 1. Needle handle; 2. Needle body; 3. Spiral micro-groove; 4. Annular developing ring; 5. Needle blade; 6. Needle tip; 7. Needle core; 71. Handle; 8. Insertion hole. Detailed Implementation

[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] like Figs. 1-3 As shown, this embodiment of the invention provides an ultrasound-guided, highly radiopaque minimally invasive needle knife, comprising a needle handle 1, a needle body 2, a spiral micro-groove 3, a needle blade 5, a needle tip 6, and a needle core 7. The needle tip 6 has a 30° oblique blunt rounded structure, with a micron-level pyramid-shaped ultrasonic radiopaque array on the end face and symmetrical micro-guide grooves on the side. The surface of the needle body 2 has continuous spiral micro-grooves 3 and equidistant annular radiopaque rings 4. The needle blade 5 has a short, flat, straight blade with blunted rounded corners at both ends. The needle handle 1 has a matte, non-slip double-wing structure. The needle core 7 has a solid, sealed structure that fits flush with the surface of the needle tip 6. An insertion hole 8 is provided at the bottom of the needle handle 1, and the insertion hole 8 communicates with the needle body 2.

[0030] In one embodiment, the blunt radius of the needle tip 6 is 0.05mm to 0.15mm, and the height of the pyramid-shaped dot matrix is ​​20μm to 50μm, used to form ultrasonically strong reflective high-brightness imaging points.

[0031] In one embodiment, the spiral micro-groove 3 is 1mm to 3mm in diameter and 0.02mm to 0.05mm in depth, and the annular developing ring 4 is 5mm in diameter.

[0032] In one embodiment, the effective blade length of the needle blade 5 is 0.5mm to 1.0mm, and the radius of the rounded corners at both ends of the blade edge is R0.05mm to R0.1mm.

[0033] In one embodiment, the diameter of the needle body 2 is 0.6mm, 0.8mm, or 1.0mm, and the length of the needle body 2 is 50mm, 75mm, or 100mm.

[0034] In one embodiment, the needle body 2 is made of medical-grade 316LVM low-nickel stainless steel, and its surface has an electrochemically polished layer and a hydrophilic coating.

[0035] In one embodiment, the needle handle 1 is made of medical matte ABS material, which does not produce ultrasonic reflection interference.

[0036] In one embodiment, a handle 71 is fixedly connected to the bottom of the needle core 7. The needle core 7 is a solid structure that closes the needle channel during puncture to prevent tissue embedding and bleeding.

[0037] In one embodiment, the needle knife is a disposable sterile structure that has been sterilized with ethylene oxide.

[0038] In operation, this invention involves: selecting a suitable needle knife based on the treatment site, checking the integrity and sterility of the needle knife packaging, inserting the needle core 7 into the needle body 2, ensuring its tip is flush with the needle tip 6, and the doctor holding the double-wing structure of the needle handle 1, aligning the needle tip 6 with the treatment target under real-time ultrasound guidance; in the ultrasound image, the pyramid-shaped imaging array of the needle tip 6 forms a bright mark, facilitating precise positioning; during puncture, the spiral micro-grooves 3 of the needle body 2 reflect ultrasound signals, enabling full visualization of the needle body; the doctor precisely controls the needle insertion depth through the spacing marks of the annular imaging ring 4, reaching the target depth. Afterwards, depending on the treatment needs, the needle core 7 can be removed or retained for the release operation; using the short, straight blade of the needle blade 5, the target soft tissue is precisely released under ultrasound guidance, and the blunted rounded corner design avoids damage to surrounding important tissues; the micro-guided groove reduces tissue encapsulation and improves the smoothness of the release operation. After the release is completed, the needle knife is slowly withdrawn under ultrasound monitoring, and the needle core 7 seals the needle channel to reduce the risk of bleeding and tissue entrapment; after the needle core 7 is withdrawn, the syringe is inserted into the insertion hole 8, and the injection operation can be performed through the needle body 2. After the operation, the puncture site is treated according to clinical standards, and the disposable needle knife is discarded to avoid cross-infection.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An ultrasound-guided, highly contrast-enhancing, minimally invasive needle knife, characterized in that: The device includes a needle handle (1), a needle body (2), a spiral micro-groove (3), a needle blade (5), a needle tip (6), and a needle core (7). The needle tip (6) has a 30° oblique blunt round structure, with a micron-level pyramid-shaped ultrasonic imaging array on the end face and symmetrical micro-guide grooves on the side. The needle body (2) has continuous spiral micro-grooves (3) and equidistant annular imaging rings (4) on its surface. The needle blade (5) has a short, flat, straight blade with blunted rounded corners at both ends. The needle handle (1) has a matte, non-slip double-wing structure. The needle core (7) has a solid sealed structure that fits flush with the surface of the needle tip (6). The bottom of the needle handle (1) has an insertion hole (8) that communicates with the needle body (2).

2. The ultrasound-guided, highly contrast-enhancing, minimally invasive needle knife according to claim 1, characterized in that: The blunt radius of the needle tip (6) is 0.05mm to 0.15mm, and the height of the pyramid-shaped dot matrix is ​​20μm to 50μm, which is used to form ultrasonic strong reflection high-brightness imaging points.

3. The ultrasound-guided, highly radiopaque, minimally invasive needle knife according to claim 1, characterized in that: The spiral micro-groove (3) is 1mm to 3mm in diameter and 0.02mm to 0.05mm in depth, and the annular developing ring (4) is 5mm in diameter.

4. The ultrasound-guided, highly contrast-enhancing, minimally invasive needle knife according to claim 1, characterized in that: The effective blade length of the needle blade (5) is 0.5mm to 1.0mm, and the radius of the rounded corners at both ends of the blade edge is R0.05mm to R0.1mm.

5. The ultrasound-guided, highly contrast-enhancing, minimally invasive needle knife according to claim 1, characterized in that: The diameter of the needle body (2) is 0.6mm, 0.8mm, and 1.0mm, and the length of the needle body (2) is 50mm, 75mm, and 100mm.

6. The ultrasound-guided, highly contrast-enhancing, minimally invasive needle knife according to claim 1, characterized in that: The needle body (2) is made of medical 316LVM low-nickel stainless steel and has an electrochemical polishing layer and a hydrophilic coating on its surface.

7. The ultrasound-guided, highly contrast-enhancing, minimally invasive needle knife according to claim 1, characterized in that: The needle handle (1) is made of medical matte ABS material, which does not produce ultrasonic reflection interference.

8. The ultrasound-guided, highly contrast-enhancing, minimally invasive needle knife according to claim 1, characterized in that: The bottom of the needle core (7) is fixedly connected to a handle (71). The needle core (7) is a solid structure that closes the needle channel during puncture to prevent tissue embedding and bleeding.

9. The ultrasound-guided, highly contrast-enhancing, minimally invasive needle knife according to claim 1, characterized in that: The needle knife is a disposable sterile structure, sterilized with ethylene oxide.

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