Puncture needle with quick identification function

Abstract

The application discloses a puncture needle with a quick identification function, which comprises a needle tube and a needle seat, a needle tip for facilitating tissue puncture is arranged at the distal end of the needle tube, the needle tip is provided with a blade edge inclined surface, the direction of the blade edge inclined surface towards a user is a positive direction, the needle seat comprises a fixedly connected connecting part and an identification part, the needle tube is in sealable fixed connection with the connecting part, and the identification part is provided with an identification mechanism, so that the user can quickly identify and judge that the blade edge inclined surface is in the positive direction, and the controllability of a tissue puncture process can be realized. The operator can quickly judge the positive direction of the blade edge inclined surface according to the identification mechanism in a visual and / or tactile mode, and the problem of difficult direction identification under limited vision is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of puncture needles with rapid identification function. Background Technology

[0002] A puncture needle is a fundamental instrument in interventional diagnosis and treatment used to establish tissue access, administer medication, drain fluid, or obtain tissue samples. Its typical structure includes a needle tube and a connected needle hub. The distal end of the needle tube has a needle tip for easy puncture, which is usually machined with a beveled edge. In clinical practice, the actual orientation of the beveled edge directly affects the accuracy and safety of the puncture. For example, during nerve blocks, vascular punctures, deep tissue biopsies, or drainage tube placement, the operator needs to control the needle tip's deflection based on the direction of the beveled edge to reduce tissue tearing and avoid damage to adjacent blood vessels or nerves. This risk is particularly pronounced in clinical settings where the target tissue area is limited, especially in small target tissues such as peripheral blood vessels. If the orientation of the beveled edge is unclear, it can easily lead to puncture path deviation, target point misalignment, repeated punctures causing tissue damage, or even operative failure.

[0003] Existing puncture needle products have significant shortcomings in identifying the direction of the bevel edge. In actual clinical use, puncture procedures are often performed in environments with limited visibility, such as under ultrasound or CT guidance, deep tissue operations, intraoperative blood pooling, and when the operator is wearing goggles or a magnifying glass. In these situations, the bevel edge of the puncture needle is easily obscured, reflects light, or is difficult to focus on. The operator often needs to pause the operation, adjust the angle or line of sight, or even rotate the needle to visually confirm the direction, significantly reducing the smoothness and efficiency of the operation.

[0004] Therefore, a puncture needle with rapid identification function is urgently needed. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a puncture needle with a rapid identification function, which allows the operator to quickly determine or ensure the positive orientation of the beveled blade by means of touch and / or vision based on the identification mechanism. This solves the problem of difficult orientation identification under limited field of vision (such as ultrasound guidance, blood pool coverage), improves the controllability of the puncture process, reduces tissue tearing, target deviation or repeated puncture damage caused by misjudgment of orientation, and improves surgical safety and operational efficiency.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A puncture needle with rapid identification function includes: a needle tube and a needle hub. The distal end of the needle tube is provided with a needle tip for easy tissue puncture. The needle tip has a beveled cutting edge, and the direction of the beveled cutting edge towards the user is positive. The needle hub includes a connecting part and an identification part that are fixedly connected. The needle tube is sealed and fixedly connected to the connecting part. The identification part is provided with an identification mechanism to enable the user to quickly identify and determine the positive orientation of the beveled cutting edge, thereby achieving controllability of the tissue puncture process.

[0007] The aforementioned puncture needle with rapid identification function includes, wherein the identification mechanism comprises one or two longitudinal identification structures, the longitudinal identification structure comprising a longitudinal concave curved surface structure and a longitudinal direction identification structure; The curvature of the longitudinal concave curved surface structure does not exceed the curvature of the operator's fingers in the longitudinal direction, making it easy for the user to hold the recognition unit; The longitudinal direction recognition structure includes a structure whose directional trend is roughly consistent with the longitudinal direction of the needle tube's central axis, which makes it easy for users to perceive and recognize the needle tube's direction by touch, and makes the tissue puncture direction controllable. The longitudinal identification structure is disposed on the front or rear side or both sides of the identification part; The center of the longitudinal identification structure is in the same plane as the central axis of the needle tube, so that the user can control the application of force and the needle insertion process during tissue puncture.

[0008] The aforementioned puncture needle with rapid identification function includes, wherein the identification mechanism comprises one or two lateral identification structures, the lateral identification structure comprising a lateral concave curved surface structure and a lateral direction identification structure; The curvature of the horizontal concave surface structure does not exceed the curvature of the operator's finger in the horizontal direction, and is less than the curvature of the vertical concave surface structure, making it easier for the user to hold the recognition unit more stably. The lateral direction recognition structure includes a structure whose directional trend is approximately perpendicular to the longitudinal direction of the needle tube's central axis. Furthermore, the lateral direction recognition structure and the longitudinal direction recognition structure are different in size or shape to enhance the user's tactile perception and recognition of the needle tube's direction, making the tissue puncture direction controllable. The lateral identification structure is located on the front, rear, or front and rear sides of the identification part. The center of the lateral identification structure is in the same plane as the central axis of the needle tube, so that the user can controllably apply force and perform the puncture needle insertion process during tissue puncture.

[0009] The aforementioned puncture needle with rapid identification function has one or more error-proof structures on the upper side of the identification part. The error-proof structure includes needle-like protrusions that are generally upward or facing forward. The error-proof structure not only facilitates automatic rotation when the puncture needle is placed on the operating table or tissue surface, so that the identification part together with the beveled edge of the needle tip rotates to or is generally facing forward, but it can also be touched by the user to feel pain, avoiding the operator holding the upper side. It helps the user quickly find the front and back sides of the identification part and ensures that the beveled edge of the needle tip faces the user. The distal end of the needle hub or both the proximal and distal ends of the needle hub are provided with a limiting structure. The limiting structure protrudes from the periphery of the longitudinal identification mechanism, which enhances the user's firm and stable grip when the puncture force is large or the puncture is obstructed during the process of the puncture needle entering the tissue.

[0010] The aforementioned puncture needle with rapid identification function includes an identification mechanism comprising a roly-poly structure disposed on the identification part, wherein the roly-poly structure comprises an identification part whose lateral outline is roughly an eggshell structure. The bottom of the eggshell structure is one or more of the following shapes: W-shaped, linear, or planar. The upper side of the eggshell structure has a hollow structure in the longitudinal direction. The roly-poly structure allows the identification part to automatically turn when it is placed on the operating table or tissue surface, so that the identification part, together with the beveled edge of the needle tip, turns to or is roughly facing the positive direction. After the automatic turning is completed, it can be stably placed on the operating table or tissue surface. The roly-poly structure also includes a needle hub located on the upper side of the needle tube with a mass lower than that located on the lower side of the needle tube, and the mass of the identification part increases from top to bottom, so that the identification part automatically turns when placed on the operating table or tissue surface, causing the identification part, together with the needle hub, to drive the beveled edge of the needle tip to turn to or approximately face forward.

[0011] The aforementioned puncture needle with rapid identification function has its center of gravity located on the needle tube, which avoids the part of the puncture needle protruding outside the tissue from causing traction or compression on the target adjacent tissue due to gravity, thus preventing pain and postoperative hematoma and facilitating rapid postoperative recovery. The angle α between the line containing the distal end of the needle tip and the bottom end of the identification part and the central axis of the needle tube does not exceed the inclination angle β of the bevel of the puncture needle blade. This helps the operator to perform inclined puncture of the tissue, so that the entire needle tip and the needle tube conform to the anatomical structure of the target tissue and thus quickly enter the target tissue target area. During the puncture, the needle tube can approach the target tissue to the greatest extent without compressing it.

[0012] The aforementioned puncture needle with rapid identification function has a strong imaging structure provided in the distal region of the needle tube; The strong imaging structure includes, but is not limited to, dot-matrix arranged recessed textures, annular or spiral arranged recessed textures, dark textures with a surface roughness higher than that of the proximal region of the needle tube, and surface coatings or films that are different from the main material of the needle tube. The high-contrast structure helps the operator to accurately and quickly identify the position of the needle tip in the tissue, the insertion depth, and the direction of the bevel of the cutting edge during the operation using imaging equipment.

[0013] The aforementioned puncture needle with rapid identification function is provided with an identification and transmission mechanism, which is disposed on the needle tube and the connecting part. The identification and transmission mechanism includes a rapid alignment mechanism that works in conjunction with each other. The rapid alignment mechanism includes a guide structure in the distal region of the connecting part, a circumferential limiting structure B in the proximal region of the connecting part, a blocking structure B in the proximal region of the connecting part, and a circumferential limiting structure A in the proximal region of the needle tube. This facilitates the rapid entry of the proximal end of the needle tube into the inner cavity of the connecting part. The circumferential limiting structure A and the axial limiting structure B are mutually matched and at least partially overlap in their contour surfaces. This facilitates the fixing of the direction of the connecting part on the circumference relative to the direction of the beveled surface of the needle tip after the needle tube and the connecting part are assembled. The blocking structure B limits the position of the needle tube when it enters the identification mechanism.

[0014] The aforementioned puncture needle with rapid identification function includes a needle hub comprising an external part, the external part comprising an interface and an external guide structure, the interface facilitating detachable connection with an external instrument, and the external guide structure being at least partially disposed within the interface to facilitate rapid alignment of the external instrument and its smooth entry into the needle tube cavity. The identification mechanism includes a visual identifier set in the identification part and / or the external part, which facilitates the user to quickly identify and determine the orientation of the blade bevel and control the tissue puncture process. The identification mechanism also includes a visualization structure located in the identification part and / or the external part, which allows the user to visually observe changes in the color of the internal channel or changes in fluid flow, so as to adjust the tissue puncture and withdrawal process in real time.

[0015] The aforementioned puncture needle with rapid identification function includes a sheath, and the sheath and the needle tube and / or connecting part are provided with a detachable surface-fitting structure, which prevents accidental contact or damage to the needle tip after the sheath and the puncture needle are engaged. The sheath and / or connecting part are provided with a fluid flow structure to facilitate rapid sterilization of the puncture needle and create a sterile environment. The puncture needle also includes a guide, which facilitates the rapid entry of non-linear instruments in the distal region into the needle tube via the needle hub.

[0016] The present invention, by employing the above-mentioned technology, has the following positive effects compared with the prior art: (1) With this invention, the operator can quickly determine the positive orientation of the blade bevel by means of vision and / or touch based on the identification mechanism, which solves the problem of difficult orientation identification under limited field of vision (such as ultrasound guidance, blood pool coverage), improves the controllability of the puncture process, reduces tissue tearing, target deviation or repeated puncture damage caused by misjudgment of orientation, and improves surgical safety and operation efficiency.

[0017] (2) A strong imaging structure is provided in the distal area of ​​the needle tube. The strong imaging structure includes, but is not limited to, a dot matrix pattern of recessed textures, a ring or spiral pattern of recessed textures, dark textures with a surface roughness higher than that of the proximal area of ​​the needle tube, and a surface coating or film that is different from the main material of the needle tube. The strong imaging structure helps the operator to accurately and quickly identify the position of the needle tip in the tissue, the insertion depth, and the direction of the bevel of the blade with the help of imaging equipment during the operation.

[0018] (3) The angle α between the line where the distal end of the needle tip and the bottom end of the identification part are located and the central axis of the needle tube does not exceed the inclination angle β of the bevel of the puncture needle blade. This helps the operator to perform inclined puncture of the tissue, so that the entire needle tip and the needle tube conform to the anatomical structure of the target tissue and quickly enter the target tissue target area. During the puncture, the needle tube can get as close as possible to the target tissue without squeezing it.

[0019] (4) The puncture needle is equipped with an identification and transfer mechanism, which is located on the needle tube and the connecting part. The identification and transfer mechanism includes a rapid alignment mechanism that works in concert. The rapid alignment mechanism includes a guide structure in the distal region of the connecting part, a circumferential limiting structure B in the proximal region of the connecting part, a blocking structure B in the proximal region of the connecting part, and a circumferential limiting structure A in the proximal region of the needle tube. This facilitates the rapid entry of the proximal end of the needle tube into the inner cavity of the connecting part. The circumferential limiting structure A and the axial limiting structure B are mutually matched and at least partially overlap in their contour surfaces, which facilitates the fixing of the direction of the connecting part on the circumference relative to the direction of the bevel of the needle tip after the needle tube and the connecting part are assembled. The blocking structure B limits the position of the needle tube entering the identification mechanism. Moreover, the rapid alignment mechanism can reduce the risks of poor adhesion or even delamination and insufficient sealing caused by the commonly used adhesive structure and process design for connecting the needle tube and the needle seat in the prior art due to human factors, thus greatly improving safety. In addition, the new guide structure guides the proximal end of the needle tube smoothly into the inner cavity of the connecting part, reducing assembly time and alignment difficulty, and is suitable for mass production or emergency assembly during surgery. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the puncture needle with rapid identification function of the present invention.

[0021] Figure 2 This is a schematic diagram of the longitudinal recognition structure of the puncture needle with rapid recognition function of the present invention.

[0022] Figure 3 This is a schematic diagram of the transverse recognition structure of the puncture needle with rapid recognition function of the present invention.

[0023] Figure 4 This is an exploded structural diagram of the puncture needle with rapid identification function of the present invention.

[0024] Figure 5 This is an exploded cross-sectional view of the puncture needle with rapid identification function of the present invention.

[0025] Figure 6 This is a schematic diagram of the sealing element of the puncture needle with rapid identification function according to the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the puncture needle with rapid identification function of the present invention, showing the needle tip entering the target tissue.

[0027] Figure 8 This is a schematic diagram of the tumbler structure of the puncture needle with rapid identification function of the present invention.

[0028] Figure 9 The present invention has a rapid identification function. Figure 8 A schematic diagram of the structure in the AA direction.

[0029] Figure 10 This is a schematic diagram of the puncture needle with rapid identification function for setting the guidewire according to the present invention.

[0030] Figure 11 This is a schematic diagram of the puncture needle straightening device with rapid identification function of the present invention.

[0031] Figure 12 This is a schematic diagram of the structure of the puncture needle with rapid identification function, including the guide wire setting and the occlusion knob.

[0032] In the attached diagram: 1. Needle tube; 2. Needle hub; 3. Needle tip; 4. Beveled cutting edge; 5. Connecting part; 6. Identifying part; 7. Identifying mechanism; 8. Error-proofing structure; 9. Limiting structure; 10. Quick alignment mechanism; 11. Guide structure; 12. Circumferential limiting structure B; 13. Blocking structure B; 14. Circumferential limiting structure A; 15. External part; 16. Interface; 17. External guide structure; 18. Visual marking; 19. Sheath; 20. Surface mating structure; 21. 21. Straightener; 22. Seal; 23. Clip; 24. Slot; 25. Inner slot; 26. Outer slot; 27. Pin; 28. Guide wire; 29. ​​Sealing knob; 30. Tumbler structure; 31. Hollowed-out structure; 32. Target adjacent tissue; 33. Target tissue; 71. Longitudinal identification structure; 72. Longitudinal concave curved surface structure; 73. Longitudinal direction identification structure; 74. Lateral identification structure; 75. Lateral concave curved surface structure; 76. Lateral direction identification structure. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "lateral", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention.

[0035] It should be noted that the terms "horizontal" and "vertical" in this invention are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0036] It should be noted that, unless otherwise specified, the present invention may be used at the angle shown in the accompanying drawings or at an angle other than those shown in the drawings.

[0037] Please see Figures 1 to 12The image shows a preferred embodiment of a puncture needle with rapid identification function, comprising: a needle tube 1 and a needle hub 2. The distal region of the needle tube 1 is provided with a needle tip 3 for easy tissue puncture. The needle tip 3 has a beveled edge 4, which faces the user in a positive direction. The needle hub 2 includes a connecting part 5 and an identification part 6 that are fixedly connected. The needle tube 1 and the connecting part 5 are fixedly connected in a sealable manner. The identification part 6 is provided with an identification mechanism 7 to enable the user to quickly identify and determine that the beveled edge 4 is facing positively, thereby achieving controllability of the tissue puncture process.

[0038] The present invention allows the operator to quickly determine the positive orientation of the beveled blade 4 by means of vision and / or touch based on the identification mechanism, which solves the problem of difficult orientation identification under limited field of vision (such as ultrasound guidance, blood pool coverage), improves the controllability of the puncture process, reduces tissue tearing, target deviation or repeated puncture damage caused by misjudgment of orientation, and improves surgical safety and operational efficiency.

[0039] Furthermore, as a preferred embodiment, the identification mechanism 7 includes one or two longitudinal identification structures 71, the longitudinal identification structure including a longitudinal concave curved surface structure 72 and a longitudinal direction identification structure 73.

[0040] Furthermore, as a preferred embodiment, the curvature of the longitudinal concave curved surface structure 72 does not exceed the curvature of the operator's finger in the longitudinal direction, making it easier for the user to hold the recognition unit.

[0041] Furthermore, as a preferred embodiment, the longitudinal direction recognition structure 73 includes a structure whose directional trend is approximately consistent with the longitudinal direction of the central axis of the needle tube 1, which facilitates the user's tactile perception and recognition of the needle tube direction, making the tissue puncture direction controllable.

[0042] Furthermore, as a preferred embodiment, the longitudinal identification structure 71 is disposed on the front side, rear side, or both sides of the identification part 7.

[0043] Furthermore, as a preferred embodiment, the center of the longitudinal identification structure 71 is in the same plane as the central axis of the needle tube 1, so that the user can controllably apply force and perform the puncture needle insertion process during tissue puncture.

[0044] The longitudinal recognition structure 71 of this invention is ergonomic, allowing the fingers to fit naturally, improving grip comfort and stability, and preventing finger slippage.

[0045] The longitudinal direction recognition structure 73 of this invention can sense the length direction of the needle tube through touch, so that the operator can determine the longitudinal orientation of the needle tip without visual inspection, thereby enhancing the controllability of the puncture direction.

[0046] This invention ensures that the applied puncture force coincides with the axis of the needle tube 1, avoiding needle bending or loss of direction caused by eccentric torque, and improving puncture accuracy and speed control.

[0047] Furthermore, as a preferred embodiment, the identification mechanism 7 includes one or two lateral identification structures 74, wherein the lateral identification structure 74 includes a lateral concave curved surface structure 75 and a lateral direction identification structure 76.

[0048] Furthermore, as a preferred embodiment, the curvature of the lateral concave curved surface structure 75 does not exceed the curvature of the operator's finger in the lateral direction, and is less than the curvature of the longitudinal concave curved surface structure 72, making it easier for the user to hold the recognition part more stably.

[0049] Furthermore, as a preferred embodiment, the lateral direction recognition structure 76 includes a structure whose directional trend is approximately perpendicular to the longitudinal direction of the central axis of the needle tube 1, and the lateral direction recognition structure 76 and the longitudinal direction recognition structure 73 are different in size or shape to enhance the user's tactile perception and recognition of the needle tube direction, making the tissue puncture direction controllable.

[0050] Furthermore, as a preferred embodiment, the lateral identification structure 74 is disposed on the front or rear side or both sides of the identification part 6, and the center of the lateral identification structure 74 is in the same plane as the central axis of the needle tube 1, so as to allow the user to controllably apply force and perform the puncture needle insertion process during tissue puncture.

[0051] This invention provides a different tactile feel than the longitudinal groove, forming a dual grip and locking mechanism of longitudinal sliding and lateral locking, which significantly enhances the anti-slip and anti-torsion capabilities of the fingers and the needle holder 2.

[0052] The invention features different curvature designs (lateral < longitudinal), allowing operators to distinguish between longitudinal and lateral structures by touch, quickly establishing a sense of spatial orientation and avoiding confusion.

[0053] The present invention differentiates the size or shape, further enhancing tactile recognition, so that the operator can clearly perceive the orientation of the needle tip in three-dimensional space even with eyes closed or through gloves.

[0054] This invention ensures that the lateral gripping force is also applied to the needle axis, so that the force is evenly distributed during puncture and needle insertion, avoiding tissue compression or pain caused by lateral deviation.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.

[0056] In addition to the above, the present invention also has the following embodiments: In a further embodiment of the present invention, one or more error-proof structures 8 are provided on the upper side of the identification part 6. The error-proof structure 8 includes needle-like protrusions that are generally upward or facing forward. The error-proof structure 8 not only facilitates automatic rotation when the puncture needle is placed on the operating table or tissue surface, so that the identification part 6 together with the beveled edge of the needle tip 4 can be rotated to or generally facing forward, but can also be touched by the user to feel pain, avoiding the operator from holding the upper side, and helping the user to quickly find the front and rear sides of the identification part and ensure that the beveled edge of the needle tip faces the user.

[0057] In a further embodiment of the present invention, a limiting structure 9 is provided at the distal end of the needle hub 2 or at both the proximal and distal ends of the needle hub 2. The limiting structure 9 protrudes from the periphery of the longitudinal identification structure 71, thereby enhancing the user's firm and stable grip when the puncture force is large or the puncture is obstructed during the puncture of the needle into the tissue.

[0058] This invention features an automatic steering function. When the puncture needle is placed on the operating table, the error-proof structure causes the needle hub and the beveled edge of the needle tip to automatically rotate and stabilize in the positive orientation, reducing preoperative preparation time and the risk of contamination.

[0059] If the operator accidentally touches the needle-like protrusion on the upper side, the user will experience a tactile sensation or slight pain, thus actively avoiding the area and ensuring a correct grip on the front / back side, preventing misjudgment of the blade direction due to incorrect grip.

[0060] When the puncture resistance is high (such as when passing through fascia or periosteum), the present invention has a limiting structure that protrudes from the periphery of the longitudinal identification mechanism to form a physical barrier, preventing the finger from sliding towards the needle tip or detaching from the needle seat, thus ensuring continuous and stable force application.

[0061] In a further embodiment of the present invention, the identification mechanism 7 includes a roly-poly structure 30 disposed on the identification part 6, wherein the roly-poly structure 30 includes the identification part 6 in a generally eggshell-shaped lateral outline.

[0062] In a further embodiment of the present invention, the bottom of the eggshell structure is one or more of the following shapes: W-shaped, linear, or planar. The upper side of the eggshell structure has a hollow structure 31 in the longitudinal direction. The roly-poly structure 30 enables the identification part to automatically turn when it is placed on the operating table or tissue surface, so that the identification part together with the beveled edge 4 of the needle tip turns to or is approximately facing the positive direction. After the automatic turning is completed, it can be stably placed on the operating table or tissue surface.

[0063] In a further embodiment of the present invention, the roly-poly structure 30 also includes a needle seat 2 located on the upper side of the needle tube with a mass lower than that located on the lower side of the needle tube 1, and the mass of the identification part increases from top to bottom, so that the identification part 6 automatically turns when placed on the operating table or tissue surface, so that the identification part together with the needle seat drives the beveled edge of the needle tip to turn to or approximately face forward.

[0064] The present invention enables the identification part 6 to have self-stabilizing characteristics, so that it can automatically return to the correct position even if it is touched or placed on a non-horizontal surface, ensuring that the beveled edge of the cutting edge always faces the positive direction.

[0065] This invention utilizes gravity for automatic orientation, eliminating the need for manual adjustment by the operator and improving the efficiency of preoperative preparation; at the same time, the low center of gravity makes the puncture needle less likely to roll when placed on the body surface, reducing the risk of accidental puncture.

[0066] The W-shaped / linear bottom of this invention increases friction and stability with the placement surface, preventing slippage, and is especially suitable for curved or irregular operating table surfaces.

[0067] In a further embodiment of the present invention, the center of gravity of the puncture needle is located on the needle tube 1, so as to avoid the part of the puncture needle protruding outside the tissue from causing traction or compression on the target adjacent tissue 32 due to gravity, thereby causing pain and postoperative hematoma, which is conducive to rapid postoperative recovery.

[0068] In a further embodiment of the present invention, the angle α between the straight line containing the distal end of the needle tip 3 and the bottom end of the identification part 6 and the central axis of the needle tube 1 does not exceed the tilt angle β of the bevel surface 4 of the puncture needle blade. This helps the operator to perform tilted puncture of the tissue, so that the entire needle tip and the needle tube conform to the anatomical structure of the target tissue 33 and thus quickly enter the target area of ​​the target tissue 33. During the puncture, the needle tube can approach the target tissue 33 to the greatest extent without compressing it.

[0069] When the puncture needle is partially inserted into the tissue, the portion protruding from the body has a very small torque due to its center of gravity being close to the puncture point. This avoids pulling or compressing the tissue, thereby reducing postoperative pain and hematoma formation and facilitating rapid recovery.

[0070] In this invention, α ≤ β, ensuring that the needle body can be as close to the tissue surface as possible without compressing the tissue during needle insertion, achieving a "low-angle approach" or "skin-penetrating puncture", which is particularly suitable for superficial blood vessels, nerve blocks or intradermal injections, reducing pain and trauma.

[0071] In a further embodiment of the present invention, a strong imaging structure is provided in the distal region of the needle tube 1.

[0072] In a further embodiment of the present invention, the strong imaging structure includes, but is not limited to, dot-matrix arranged recessed patterns, annular or spiral arranged recessed patterns, dark patterns with a surface roughness higher than that of the proximal region of the needle tube 1, and a surface coating or film that is different from the material of the needle tube body.

[0073] In a further embodiment of the present invention, the strong imaging structure helps the operator to accurately and quickly identify the position of the needle tip in the tissue, the insertion depth, and the direction of the bevel of the cutting edge during the operation using imaging equipment.

[0074] Under ultrasound, X-ray, CT, or MRI, the strong imaging structure of this invention presents a clear, high-contrast image of the needle tip area, allowing the operator to quickly locate the needle tip position without repeated scanning.

[0075] The different shapes of the needle tip, such as dot matrix, ring, and thread, can help the operator determine the rotation angle of the needle tip and the orientation of the beveled edge in the image, achieving dual direction confirmation through both vision and touch.

[0076] The surface roughness / coating of this invention enhances imaging without altering the mechanical properties of the syringe, and some coatings (such as hydrophilic and antibacterial coatings) can add additional functions, improving the safety and efficiency of interventional procedures.

[0077] In a further embodiment of the present invention, the puncture needle is provided with an identification and transmission mechanism, which is disposed on the needle tube and the connecting part.

[0078] In a further embodiment of the present invention, the identification and transmission mechanism includes a rapid alignment mechanism 10 that cooperates with each other. The rapid alignment mechanism 10 includes a guide structure 11 provided in the distal region of the connecting part 5, a circumferential limiting structure B12 provided in the proximal region of the connecting part 5, a blocking structure B13 provided in the proximal region of the connecting part 5, and a circumferential limiting structure A14 provided in the proximal region of the needle tube 1. This facilitates the rapid entry of the proximal end of the needle tube 1 into the inner cavity of the connecting part 5. The circumferential limiting structure A14 and the circumferential limiting structure B12 match each other and at least partially overlap in their contour surfaces. This facilitates the fixing of the direction of the connecting part 5 on the circumference relative to the direction of the inclined surface 4 of the needle tip after the needle tube 1 and the connecting part 5 are assembled. The blocking structure B13 limits the position of the needle tube 1 entering the identification mechanism 7.

[0079] The guide structure 11 of this invention guides the proximal end of the needle tube smoothly into the inner cavity of the connecting part, reducing assembly time and alignment difficulty, and is suitable for mass production or emergency assembly during surgery.

[0080] The circumferential limiting structure of the present invention fits perfectly, ensuring that the relative direction between the identification mechanism on the connecting part and the inclined surface 4 of the needle tip blade is unique and fixed after assembly, thus avoiding incorrect direction indication due to assembly deviation.

[0081] The blocking structure B13 of the present invention can precisely limit the insertion depth of the needle tube 1, prevent over-insertion or under-insertion, ensure connection sealing and structural strength, and at the same time avoid damage to the identification mechanism by the needle tube.

[0082] In a further embodiment of the present invention, the needle hub 2 includes an external part 15, the external part 15 includes an interface 16 and an external guide structure 17. The interface 15 facilitates detachable connection with external instruments, and the external guide structure 17 is at least partially disposed within the interface 16, facilitating rapid alignment of external instruments and smooth entry into the inner cavity of the needle tube 1.

[0083] A sealing knob 29 is detachably connected to the external part 15.

[0084] In a further embodiment of the present invention, the identification mechanism 7 includes a visual identifier 18 disposed on the identification part 6 and / or the external part 15, which facilitates the user to quickly identify and determine the orientation of the blade bevel and control the tissue puncture process.

[0085] In a further embodiment of the present invention, the identification mechanism 7 further includes a visualization structure disposed on the identification part 6 and / or the external part 15, which facilitates the user to visually observe the color change or fluid flow change of the internal channel, so as to adjust the tissue puncture and withdrawal process in real time.

[0086] The present invention provides an external guide structure 17, which enables instruments such as syringes, guide wires, and drainage tubes to enter the inner lumen of the needle tube quickly and coaxially, avoiding repeated probes that could cause contamination or tissue damage.

[0087] The present invention sets up a visual label 18 to provide the operator with a direct visual reference, which complements the tactile recognition and is especially suitable for non-blind traversal scenarios or teaching demonstrations.

[0088] The visualization structure of this invention allows for real-time observation of changes in blood return (venous puncture), drug injection, or drainage fluid properties. Operators can adjust the needle insertion depth or withdrawal timing in a timely manner based on fluid dynamics, reducing complications.

[0089] In a further embodiment of the present invention, a retainer 23 is provided at the proximal end of the needle tube 1, and an outer slot 26 is provided on the side of the connecting part 5. A pin 27 is provided in the outer slot 26 to limit the retainer 23 and prevent the needle tube 1 from detaching.

[0090] In a further embodiment of the present invention, a sealing member 22 is provided between the needle tube 1 and the connecting part 5; a retaining member 23 is provided at the proximal end of the needle tube 1, a retaining groove 24 is provided on the inner wall of the sealing member 22, an inner slot 25 is provided on the side wall of the sealing member 22, and an outer slot 26 is provided on the side of the connecting part 5. The inner slot 25 and the outer slot 26 are connected by a pin 27 to fix the sealing member 22 in the connecting part 4. The retaining member 23 engages with the retaining groove 24 to fix the proximal end of the needle tube 1 in the sealing member 22. This achieves a sealed connection between the needle tube 1 and the connecting part 5 via the sealing member 22.

[0091] In a further embodiment of the present invention, the puncture needle includes a sheath 19. The sheath 19 and the needle tube 1 and / or the connecting part 5 are provided with a detachable form-fitting structure 20. The form-fitting structure 20 prevents accidental contact or damage to the needle tip after the sheath 19 is engaged with the puncture needle. The sheath 19 and the puncture needle form a stable but manually detachable connection, which protects the needle tip from impact, prevents punctures to the operator or contamination, and facilitates quick removal during use.

[0092] In a further embodiment of the present invention, the sheath 19 and / or the connecting portion 5 are provided with a fluid flow structure 20 to facilitate rapid sterilization of the puncture needle and create a sterile environment. During ethylene oxide, steam, or plasma sterilization, the sterilizing gas or liquid can fully contact all internal and external surfaces to ensure a high level of sterility, which is particularly suitable for reusable puncture needles.

[0093] In a further embodiment of the present invention, the puncture needle also includes a straightener 21, which facilitates the rapid entry of non-linear instruments in the distal region into the needle tube 1 via the needle hub 2. When a pre-bent guidewire 28 or a shape memory alloy catheter needs to be inserted, the straightener 21 can temporarily straighten its tip, allowing it to smoothly pass through the needle hub interface into the straight needle tube lumen, avoiding jamming or damage to the instrument, and expanding the clinical applicability of the puncture needle (such as interventional radiology, ERCP, etc.).

[0094] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A puncture needle with rapid identification function, characterized in that, include: The needle tube and needle hub are provided. The distal end of the needle tube is provided with a needle tip that facilitates tissue puncture. The needle tip has a beveled edge, and the beveled edge faces the user in a positive direction. The needle hub includes a fixedly connected connecting part and an identification part. The needle tube is fixedly connected to the connecting part in a sealable manner. The identification part is provided with an identification mechanism so that the user can quickly identify and determine the positive orientation of the beveled edge, thereby achieving controllability of the tissue puncture process.

2. The puncture needle with rapid identification function according to claim 1, characterized in that, The identification mechanism includes one or two longitudinal identification structures, wherein the longitudinal identification structure includes a longitudinal concave curved surface structure and a longitudinal direction identification structure; The curvature of the longitudinal concave curved surface structure does not exceed the curvature of the operator's fingers in the longitudinal direction, making it easy for the user to hold the recognition unit; The longitudinal direction recognition structure includes a structure whose directional trend is roughly consistent with the longitudinal direction of the needle tube's central axis, which makes it easy for users to perceive and recognize the needle tube's direction by touch, and makes the tissue puncture direction controllable. The longitudinal identification structure is disposed on the front or rear side or both sides of the identification part; The center of the longitudinal identification structure is in the same plane as the central axis of the needle tube, so that the user can control the application of force and the needle insertion process during tissue puncture.

3. The puncture needle with rapid identification function according to claim 2, characterized in that, The identification mechanism includes one or two lateral identification structures, wherein the lateral identification structure includes a lateral concave curved surface structure and a lateral direction identification structure; The curvature of the horizontal concave surface structure does not exceed the curvature of the operator's finger in the horizontal direction, and is less than the curvature of the vertical concave surface structure, making it easier for the user to hold the recognition unit more stably. The lateral direction recognition structure includes a structure whose directional trend is approximately perpendicular to the longitudinal direction of the needle tube's central axis. Furthermore, the lateral direction recognition structure and the longitudinal direction recognition structure are different in size or shape to enhance the user's tactile perception and recognition of the needle tube's direction, making the tissue puncture direction controllable. The lateral identification structure is located on the front, rear, or front and rear sides of the identification part. The center of the lateral identification structure is in the same plane as the central axis of the needle tube, so that the user can controllably apply force and perform the puncture needle insertion process during tissue puncture.

4. The puncture needle with rapid identification function according to claim 2, characterized in that, The upper side of the identification part is provided with one or more error-proof structures. The error-proof structure includes needle-like protrusions that are generally upward or facing forward. The error-proof structure not only facilitates automatic rotation when the puncture needle is placed on the operating table or tissue surface, so that the identification part together with the beveled edge of the needle tip turns to or is generally facing forward, but also allows the user to touch and feel pain, avoiding the operator from holding the upper side. It helps the user to quickly find the front and back sides of the identification part and ensures that the beveled edge of the blade faces the user. The distal end of the needle hub or both the proximal and distal ends of the needle hub are provided with a limiting structure. The limiting structure protrudes from the periphery of the longitudinal identification mechanism, which enhances the user's firm and stable grip when the puncture force is large or the puncture is obstructed during the process of the puncture needle entering the tissue.

5. The puncture needle with rapid identification function according to claim 1, characterized in that, The identification mechanism includes a roly-poly structure disposed on the identification part, wherein the roly-poly structure includes an eggshell-shaped lateral outline of the identification part. The bottom of the eggshell structure is one or more of the following shapes: W-shaped, linear, or planar. The upper side of the eggshell structure has a hollow structure in the longitudinal direction. The roly-poly structure allows the identification part to automatically turn when it is placed on the operating table or tissue surface, so that the identification part, together with the beveled edge of the needle tip, turns to or is roughly facing the positive direction. After the automatic turning is completed, it can be stably placed on the operating table or tissue surface. The roly-poly structure also includes a needle hub located on the upper side of the needle tube with a mass lower than that located on the lower side of the needle tube, and the mass of the identification part increases from top to bottom, so that the identification part automatically turns when placed on the operating table or tissue surface, causing the identification part, together with the needle hub, to drive the beveled edge of the needle tip to turn to or approximately face forward.

6. The puncture needle with rapid identification function according to claim 1, characterized in that, The center of gravity of the puncture needle is located on the needle tube, which avoids the part of the puncture needle protruding outside the tissue from causing traction or compression on the target adjacent tissue due to gravity, thus avoiding pain and postoperative hematoma, and facilitating rapid postoperative recovery. The angle α between the line containing the distal end of the needle tip and the bottom end of the identification part and the central axis of the needle tube does not exceed the inclination angle β of the bevel of the puncture needle blade. This helps the operator to perform inclined puncture of the tissue, so that the entire needle tip and the needle tube conform to the anatomical structure of the target tissue and thus quickly enter the target tissue target area. During the puncture, the needle tube can approach the target tissue to the greatest extent without compressing it.

7. The puncture needle with rapid identification function according to claim 1, characterized in that, The distal region of the needle is provided with a strong imaging structure; The strong imaging structure includes, but is not limited to, dot-matrix arranged recessed textures, annular or spiral arranged recessed textures, dark textures with a surface roughness higher than that of the proximal region of the needle tube, and surface coatings or films that are different from the main material of the needle tube. The high-contrast structure helps the operator to accurately and quickly identify the position of the needle tip in the tissue, the insertion depth, and the direction of the bevel of the cutting edge during the operation using imaging equipment.

8. The puncture needle with rapid identification function according to claim 1, characterized in that, The puncture needle is equipped with an identification and transmission mechanism, which is located on the needle tube and the connecting part. The identification and transmission mechanism includes a rapid alignment mechanism that works in conjunction with each other. The rapid alignment mechanism includes a guide structure in the distal region of the connecting part, a circumferential limiting structure B in the proximal region of the connecting part, a blocking structure B in the proximal region of the connecting part, and a circumferential limiting structure A in the proximal region of the needle tube. This facilitates the rapid entry of the proximal end of the needle tube into the inner cavity of the connecting part. The circumferential limiting structure A and the axial limiting structure B are mutually matched and at least partially overlap in their contour surfaces. This facilitates the fixing of the direction of the connecting part on the circumference relative to the direction of the beveled surface of the needle tip after the needle tube and the connecting part are assembled. The blocking structure B limits the position of the needle tube when it enters the identification mechanism.

9. The puncture needle with rapid identification function according to claim 1, characterized in that, The needle hub includes an external part, which includes an interface and an external guide structure. The interface facilitates detachable connection with an external instrument, and the external guide structure is at least partially disposed within the interface to facilitate rapid alignment of the external instrument and smooth entry into the needle tube cavity. The identification mechanism includes a visual identifier set in the identification part and / or the external part, which facilitates the user to quickly identify and determine the orientation of the blade bevel and control the tissue puncture process. The identification mechanism also includes a visualization structure located in the identification part and / or the external part, which allows the user to visually observe changes in the color of the internal channel or changes in fluid flow, so as to adjust the tissue puncture and withdrawal process in real time.

10. The puncture needle with rapid identification function according to claim 1, characterized in that, The puncture needle includes a sheath, and the sheath and the needle tube and / or connecting part are provided with a detachable surface-fitting structure. The surface-fitting structure prevents accidental contact or damage to the needle tip after the sheath and the puncture needle are engaged. The sheath and / or connecting part are provided with a fluid flow structure to facilitate rapid sterilization of the puncture needle and create a sterile environment. The puncture needle also includes a guide, which facilitates the rapid entry of non-linear instruments in the distal region into the needle tube via the needle hub.

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