Disposable needle-thread integrated needle-knife buried thread injection needle
Patent Information
- Application Number
- CN202610909181.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-23
- Publication Date
- 2026-08-21
AI Technical Summary
现有技术中的一次性使用针线一体针刀埋线针在实际的临床使用时，由于线体与针体之间存在间隙，线体出现倾斜的情况，从而线体的两端与针体内壁接触，针芯推送过程中，线体在针体内出现卡顿的情况，同时平头针芯与线体之间无任何同轴定位功能，针芯的推力作用线极易偏离线体的几何轴线，从而产生弯曲力矩，而可吸收线体自身抗弯刚度较低，从而在推送线体的过程中，出现线体卡顿与偏斜的情况，进而造成局限性
1.本发明通过在针芯上设置支撑条，使得支撑条环绕在线体的四周，将线体与针体之间隔开，从而线体处于针体的中间位置，因此在针芯推送线体的过程中，线体始终处于针体的中间部位，因此线体不会出现与针体内壁接触而卡顿或倾斜的情况。
Smart Images
Figure CN122604429A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of minimally invasive medical device technology, and in particular to a disposable needle-and-suture integrated needle-knife implantation needle. Background Technology
[0002] Acupoint embedding therapy is a treatment technique developed based on the meridians of traditional Chinese medicine. It involves implanting threads made of absorbable materials into acupoints in the human body. The continuous stimulation generated by the slow degradation of the threads at the acupoints helps to unblock the meridians and treat diseases. It is currently widely used in pain management, internal medicine, cosmetic medicine, and weight loss. Traditional suture embedding needles use a needle and thread separation design. In clinical operation, the absorbable thread needs to be inserted into the hollow needle body first before puncture. The traditional suture embedding method is cumbersome. The thread needs to be re-threaded for each acupoint. When embedding multiple acupoints, the efficiency is low. In addition, the thread is exposed to a non-sterile environment during the threading process, which increases the risk of human infection. To solve the above problems, manufacturers pre-install the sutures into the needle body during the production process, making it a pre-installed suture needle with integrated needle and suture. At the same time, to improve the treatment effect, a disposable needle-knife suture injection needle integrating needle knife release and drug injection functions has emerged. It can complete three operations—soft tissue release, local drug injection, and acupoint suture embedding—with a single puncture, achieving three uses in one needle. In existing disposable needle-and-suture integrated needle-knife implantation needles, during actual clinical use, due to the gap between the suture and the needle body, the suture tends to tilt, causing the two ends of the suture to contact the inner wall of the needle. During the needle core push-out process, the suture gets stuck inside the needle body. At the same time, the flat-headed needle core and the suture have no coaxial positioning function, and the pushing force line of the needle core is very easy to deviate from the geometric axis of the suture, thus generating a bending moment. The absorbable suture itself has low bending stiffness, resulting in suture getting stuck and deviating during the suture push-out process, thus causing limitations.
[0003] To address these issues, this invention proposes a disposable needle-and-knife integrated needle-and-knife injection needle. Summary of the Invention
[0004] In view of the shortcomings of the prior art, the present invention provides a disposable needle-and-knife integrated needle-and-knife injection needle, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a disposable needle-and-suture integrated needle-knife suture injection needle, comprising: The device comprises a needle body, a needle core, and a thread; the needle body is a tubular structure; the thread and the needle core can be inserted into the needle body; a push block is fixedly connected to the needle core. The needle core is provided with a support mechanism; the support mechanism is arranged around the thread body to support the thread body, so that the thread body is located at the axis within the needle body.
[0006] Preferably, the support mechanism includes a sliding ring, a support bar, and a contact bar; a pair of sliding rings are slidably connected to the needle core; a pair of support bars are fixedly connected to the sliding rings; the contact bar is arc-shaped and is laterally fixedly connected to the support bar; a limit block is fixedly connected to the front end of the needle core.
[0007] Preferably, the needle body has an inwardly recessed groove at its front end; the recessed groove is used to limit the position of the support strip.
[0008] Preferably, a transverse block is fixedly connected to the front end of the support bar.
[0009] By setting a support strip on the needle core, the support strip surrounds the thread body, separating the thread body from the needle body. This keeps the thread body in the middle of the needle body. Therefore, during the process of the needle core pushing the thread body, the thread body is always in the middle of the needle body, so the thread body will not come into contact with the inner wall of the needle body and get stuck or tilt.
[0010] Preferably, the portion of the support bar near the limiting block is bent into an arc shape, and the bent portion of the support bar contacts the side of the limiting block.
[0011] Preferably, a torsion spring is connected between the two sliding rings, and the sliding rings are rotatably engaged with the needle core.
[0012] By rotating and connecting the two sliding rings with a torsion spring, when assembling the wire body on the support bar, the sliding rings rotate relative to each other, increasing the gap between the support bars on the two sliding rings, thus facilitating the insertion of the wire body. After the wire body is inserted between the support bars, the sliding rings are released, and the torsion spring drives the sliding ring 41 to rotate, so that the support bars on the two sliding rings form a 90-degree angle, supporting the wire body.
[0013] Preferably, the sliding ring is made of metal; the limiting block is made of magnetic metal and is magnetic, used to attract the sliding ring.
[0014] Preferably, a fixing block is sleeved on the outer side of the needle body; the fixing block is slidably connected to the needle body, and a magnet is fixedly connected to the fixing block; the magnet is located on one side of the needle body, and the magnet is used to attract the support strip, so that the front end of the support strip contacts the inner wall of the needle body, thereby fixing the front end of the support strip.
[0015] Preferably, a second fixing block is slidably connected to the needle core; the second fixing block has an annular groove, and the second fixing block engages with the rear end of the needle body through the annular groove.
[0016] By setting a first fixing block on the needle body, the magnet in the first fixing block generates magnetic force to the front end of the support bar and the transverse block, thereby restricting the wobbling of the front end of the support bar and preventing the thread from slipping off the front end of the support bar. At the same time, the second fixing block restricts the radial movement of the needle core, preventing the needle core, the sliding ring and the rear end of the support bar from wobbling, which would cause the thread to detach from the support bar.
[0017] The beneficial effects of this invention are: 1. The present invention provides a support strip on the needle core, which surrounds the thread body and separates the thread body from the needle body. This places the thread body in the middle of the needle body, so that the thread body is always in the middle of the needle body during the process of the needle core pushing the thread body. Therefore, the thread body will not come into contact with the inner wall of the needle body and get stuck or tilted.
[0018] 2. This invention utilizes a rotating fit between two sliding rings and a torsion spring. Therefore, when assembling the wire body on the support bar, the sliding rings rotate relative to each other, increasing the gap between the support bars on the two sliding rings, thus facilitating the insertion of the wire body. After the wire body is inserted between the support bars, the sliding rings are released, and the torsion spring drives the sliding rings to rotate, causing the support bars on the two sliding rings to form a 90-degree angle, supporting the wire body.
[0019] 3. The present invention sets a first fixing block on the needle body. The magnet in the first fixing block generates magnetic force to the front end of the support bar and the transverse block, thereby restricting the shaking of the front end of the support bar and preventing the thread from slipping off the front end of the support bar. At the same time, the second fixing block restricts the radial movement of the needle core, preventing the needle core, the sliding ring and the rear end of the support bar from shaking, thereby preventing the thread from separating from the support bar. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the disposable needle-suture integrated needle knife implantation needle structure of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the structure of the needle core, support strip, thread and sliding ring in this invention; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 This is a partial cross-sectional view of the needle body and the first fixing block of the present invention, showing the structure of the first fixing block, the needle body, the thread body and the support strip.
[0021] In the diagram: 1. Needle body; 2. Needle core; 3. Thread; 21. Push block; 41. Sliding ring; 42. Support bar; 43. Contact bar; 44. Limiting block; 45. Concave-convex block; 46. Torsion spring; 5. Fixing block No. 1; 51. Magnet block; 52. Fixing block No. 2; 53. Annular groove; 6. Horizontal block. Detailed Implementation
[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.
[0023] Example 1: Refer to the appendix of the instruction manual. Figures 1 to 5 Disposable needle and suture integrated needle knife for suture embedding injection, including: Needle body 1, needle core 2, and thread 3; needle body 1 is a tubular structure; thread 3 and needle core 2 can be inserted into needle body 1; a push block 21 is fixedly connected to needle core 2; The needle core 2 is provided with a support mechanism; the support mechanism is arranged around the thread body 3 to support the thread body 3, so that the thread body 3 is in the central position within the needle body 1.
[0024] In this invention, the support mechanism includes a sliding ring 41, a support bar 42, and a contact bar 43; a pair of sliding rings 41 are slidably connected to the needle core 2; a pair of support bars 42 are fixedly connected to the sliding rings 41; the contact bar 43 is arc-shaped and is horizontally fixedly connected to the support bar 42; a limit block 44 is fixedly connected to the front end of the needle core 2.
[0025] In this invention, the front end of the needle body 1 has an inwardly recessed groove 45; the recessed groove is used to limit the position of the support bar 42.
[0026] In this invention, a transverse block 6 is fixedly connected to the front end of the support bar 42.
[0027] This invention uses medical sterile packaging for encapsulation. When using this invention for thread embedding, first clean and disinfect the acupoints on the body where the threads need to be embedded. Then, tear open the packaging bag, align the cutting edge of the needle body 1 with the acupoint, and insert it into the acupoint. Then, press the pushing block 21 on the needle core 2, causing the pushing block 21 to push the needle core 2, the limiting block 44, the thread body 3, the sliding ring 41, and the support bar 42 forward within the needle body 1 until the transverse block 6 at the front end of the support bar 42 aligns with the inwardly recessed groove on the needle body 1. When the needle core 2 makes contact with the transverse block 6 and the support bar 42, the transverse block 6 and the support bar 42 are blocked, so the needle core 2 continues to push the thread 3 forward, while the sliding ring 41, the support bar 42 and the transverse block 6 stop moving. Thus, the needle core 2 pushes the thread 3 into the acupoint through the needle body 1. During this process, the support bar 42 supports the thread 3 around the thread 3, so that the thread 3 is in the middle of the needle body 1. Therefore, the thread 3 will not come into contact with the inner wall of the needle body 1 during the process of pushing the thread 3 into the acupoint, and thus there will be no jamming or tilting of the thread 3 inside the needle body 1. A contact strip 43 is provided on the support strip 42. The support strip 42 contacts the line body 3 through the contact strip 43, thereby reducing the contact area between the support strip 42 and the line body 3, reducing the friction force on the line body 3, and making the pushing process of the line body 3 smoother. In this invention, when the injection function of the disposable needle-and-thread integrated needle knife implantation injection needle is needed, the needle core 2 and the support bar 42 are pulled out from the needle body 1, and then the needle body 1 is connected to the injection syringe. The injection function is used, and after the injection is completed, the needle core 2, the support bar 42 and the thread 3 are inserted into the needle body 1. The present invention provides a support strip 42 on the needle core 2, so that the support strip 42 surrounds the thread body 3 and separates the thread body 3 from the needle body 1. Thus, the thread body 3 is in the middle position of the needle body 1. Therefore, during the process of the needle core 2 pushing the thread body 3, the thread body 3 is always in the middle part of the needle body 1, so the thread body 3 will not come into contact with the inner wall of the needle body 1 and get stuck or tilted.
[0028] Example 2: Based on Example 1, refer to the appendix of the instruction manual. Figures 1 to 5 In this invention, the support bar 42 is bent into an arc shape near the limiting block 44, and the bent part of the support bar 42 is in contact with the side of the limiting block 44.
[0029] In this invention, a torsion spring 46 is connected between the two sliding rings 41, and the sliding rings 41 are rotatably engaged with the needle core 2.
[0030] In this invention, the support bar 42 is bent towards the limiting block 44. Therefore, after the support bar 42 contacts the recessed groove 45, the limiting block 44 pushes the thread 3 to continue moving forward. The side of the limiting block 44 contacts the support bar 42, and the side of the limiting block 44 pushes the support bar 42 outward along the bent part of the support bar 42. This reduces the clamping force of the contact bar 43 on the support bar 42, making it easier for the limiting block 44 to push the thread 3. Thus, in daily storage, the support bar 42 clamps the thread 3 through the contact bar 43. When the thread 3 is pushed into the acupoint, the clamping force of the contact bar 43 is reduced. Therefore, in daily storage, the thread 3 will not come off between the support bars 42, and in use, the clamping force of the support bar 42 will not affect the insertion of the thread 3 into the acupoint. In this invention, the two sliding rings 41 are connected by a torsion spring 46, and two support bars 42 are symmetrically arranged on the same sliding ring 41. Therefore, when producing the assembly line 3, the two sliding rings 41 can be rotated relative to each other, which increases the gap between the support bars 42 on the two sliding rings 41, making it easier to put the line 3 in. After the line 3 is put between the support bars 42, the sliding rings 41 are released, so that the sliding rings 41 rotate relative to each other under the action of the torsion spring 46. The support bars 42 on the two sliding rings 41 form a 90-degree angle with each other, supporting the line 3 around its perimeter. This invention utilizes a rotating fit between two sliding rings 41 and a torsion spring 46. Therefore, when assembling the thread body 3 on the support bar 42, the sliding rings 41 rotate relative to each other, increasing the gap between the support bars 42 on the two sliding rings 41, thus facilitating the insertion of the thread body 3. After the thread body 3 is inserted between the support bars 42, the sliding rings 41 are released, and the torsion spring 46 drives the sliding rings 41 to rotate, so that the support bars 42 on the two sliding rings 41 form a 90-degree angle, supporting the thread body 3.
[0031] In this invention, the sliding ring 41 is made of metal; the limiting block 44 is made of magnetic metal and is magnetic, and is used to attract the sliding ring 41.
[0032] In this invention, a first fixing block 5 is sleeved on the outside of the needle body 1; the first fixing block 5 is slidably connected to the needle body 1, and a magnet block 51 is fixedly connected to the first fixing block 5; the magnet block 51 is located on one side of the needle body 1, and the magnet block 51 is used to attract the support strip 42, so that the front end of the support strip 42 contacts the inner wall of the needle body 1, thereby fixing the front end of the support strip 42.
[0033] In this invention, a second fixing block 52 is slidably connected to the needle core 2; the second fixing block 52 has an annular groove 53, and the second fixing block 52 is engaged with the rear end of the needle body 1 through the annular groove 53.
[0034] In this invention, the limiting block 44 is magnetic and can attract the sliding ring 41. Therefore, during storage and transportation, the sliding ring 41 can fit against the limiting block 44, preventing the sliding ring 41 from moving on the needle core 2. At the same time, a first fixing block 5 is sleeved on the outside of the needle body 1. The magnet 51 on the first fixing block 5 generates magnetic force on the outside of the needle body 1, which exerts force on the support strip 42 and the transverse block 6 inside the needle body 1, so that the support strip 42 and the transverse block 6 contact the inner wall of the needle body 1. The force exerted by the magnet 51 on the support strip 42 and the transverse block 6 can prevent the shaking generated during transportation from affecting the support strip 42, thus preventing the front end of the thread 3 from detaching from the support strip 42. In this invention, a second fixing block 52 is slidably connected to the needle core 2, and the rear end of the needle body 1 can be inserted into the annular groove 53 on the second fixing block 52, thereby restricting the radial movement of the needle core 2 at the rear end of the needle body 1, thus preventing the needle core 2, the sliding ring 41 and the support bar 42 from shaking, and causing the thread 3 to detach from the support bar 42; the second fixing block 52 is slidably connected to the needle core 2, so when the needle core 2 is pushed, the second fixing block 52 can slide on the needle core 2, thus not affecting the pushing of the thread 3; The present invention provides a first fixing block 5 on the needle body 1. The magnet block 51 in the first fixing block 5 generates magnetic force to act on the front end of the support bar 42 and the transverse block 6, thereby restricting the swaying of the front end of the support bar 42 and preventing the thread 3 from slipping off the front end of the support bar 42. At the same time, the second fixing block 52 restricts the radial movement of the needle core 2, preventing the needle core 2, the sliding ring 41 and the rear end of the support bar 42 from swaying, thereby preventing the thread 3 from detaching from the support bar 42.
[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A disposable needle-and-suture integrated needle knife for suture embedding injection, characterized in that, include: The needle body (1), needle core (2), and thread (3) are provided. The needle body (1) is a tubular structure. The thread (3) and the needle core (2) can be inserted into the needle body (1). A push block (21) is fixedly connected to the needle core (2). The needle core (2) is provided with a support mechanism; the support mechanism is arranged around the thread body (3) to support the thread body (3) so that the thread body (3) is located at the axial position inside the needle body (1).
2. The disposable needle-and-suture integrated needle knife for suture embedding injection according to claim 1, characterized in that: The support mechanism includes a sliding ring (41), a support bar (42), and a contact bar (43); a pair of sliding rings (41) are slidably connected to the needle core (2); a pair of support bars (42) are fixedly connected to the sliding rings (41); the contact bar (43) is arc-shaped and is horizontally fixedly connected to the support bar (42); a limit block (44) is fixedly connected to the front end of the needle core (2).
3. The disposable needle-and-suture integrated needle knife for suture embedding injection according to claim 2, characterized in that: The needle body (1) has an inwardly recessed groove at its front end; the recessed groove is used to limit the position of the support bar (42).
4. The disposable needle and suture integrated needle knife for suture embedding injection according to claim 3, characterized in that: The front end of the support bar (42) is fixedly connected to a transverse block (6).
5. The disposable needle-and-suture integrated needle knife for suture embedding injection according to claim 4, characterized in that: The support bar (42) is curved into an arc shape near the limiting block (44), and the curved part of the support bar (42) is in contact with the side of the limiting block (44).
6. The disposable needle and suture integrated needle knife for suture embedding injection according to claim 5, characterized in that: A torsion spring (46) is connected between the two sliding rings (41), and the sliding rings (41) are rotatably engaged with the needle core (2).
7. The disposable needle-and-suture integrated needle-knife implantation needle according to claim 6, characterized in that: The sliding ring (41) is made of metal; the limiting block (44) is made of magnetic metal and is magnetic, and is used to attract the sliding ring (41).
8. The disposable needle and suture integrated needle knife for suture embedding injection according to claim 7, characterized in that: A first fixing block (5) is sleeved on the outside of the needle body (1); the first fixing block (5) is slidably connected to the needle body (1), and a magnet block (51) is fixedly connected to the first fixing block (5); the magnet block (51) is located on one side of the needle body (1), and the magnet block (51) is used to attract the support strip (42), so that the front end of the support strip (42) contacts the inner wall of the needle body (1), thereby fixing the front end of the support strip (42).
9. The disposable needle-and-suture integrated needle knife for suture embedding injection according to claim 8, characterized in that: A second fixing block (52) is slidably connected to the needle core (2); the second fixing block (52) has an annular groove (53), and the second fixing block (52) engages with the rear end of the needle body (1) through the annular groove (53).