Automatic acupuncture needle delivery device
By incorporating the limiting cavity and guide tube design of the automatic needle-dispensing acupuncture fixture, combined with flexible retaining rings and buffer components, the problem of low efficiency in existing acupuncture fixtures is solved. This enables automatic and continuous needle ejection and precise puncture, improving treatment efficiency and safety.
Patent Information
- Application Number
- CN202520905318.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-05-08
AI Technical Summary
Existing acupuncture equipment is inefficient during operation, requiring doctors to manually load the needles, which increases the difficulty of operation and prolongs treatment time. This is especially true for novice doctors, who find it difficult to accurately control the puncture force and location.
An automatic needle-dispensing acupuncture fixture was designed, comprising an outer shell, a movable shell, a locking mechanism, and an elastic element. Through the combined design of a limiting cavity and a guide cylinder, the fixture achieves precise guidance of the needle and consistent puncture force. An actuating block and driving teeth are set on the movable shell to realize the automatic needle dispensing function. Combined with a flexible retaining ring and a buffer element, the fixture ensures the stability and smoothness of the needle.
It enables automatic and continuous ejection of the needle, improving treatment efficiency, reducing operation time, ensuring the accuracy and safety of puncture, avoiding patient injury caused by improper operation, and supporting rapid replacement of the needle chamber to prevent cross-infection.
Smart Images
Figure CN224671818U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of acupuncture tooling technology, and in particular to an automatic needle dispensing acupuncture tooling. Background Technology
[0002] In traditional Chinese medicine acupuncture, acupuncture needles and thread embedding needles are commonly used treatment tools, and their effectiveness largely depends on the doctor's experience and skill. Currently, most acupuncture needles and thread embedding needles used clinically rely on manual needle removal by the doctor, a process that places extremely high demands on the doctor's ability to control the puncture force and location. For novice doctors, due to a lack of sufficient clinical experience, it is often difficult to accurately master the appropriate puncture force and precise puncture location. This not only increases the difficulty of the operation but may also affect the treatment effect due to improper operation, and even cause unnecessary harm to the patient.
[0003] To address the aforementioned issues, various acupuncture fixtures have been developed in the prior art to provide stable puncture force for acupuncture needles and thread embedding needles, thereby reducing the difficulty of operation and enabling novice doctors to perform acupuncture procedures more conveniently. These acupuncture fixtures are mainly divided into two types: press-type and pop-out type. Press-type acupuncture fixtures ensure that the needle enters the body to a consistent length each time it is inserted by setting a fixed pressing stroke, thus achieving consistent puncture force; pop-out type acupuncture fixtures, on the other hand, use a spring structure to quickly eject the needle when triggered, achieving the same effect of stable puncture force.
[0004] However, existing acupuncture tools still have shortcomings in practical applications. Most of them can only operate on a single needle, and after completing an acupuncture treatment, the doctor needs to manually reload the needle. This cumbersome needle loading step greatly prolongs the treatment time and reduces the efficiency of acupuncture. Utility Model Content
[0005] The purpose of this utility model is to disclose a more efficient and convenient tool that enables the automatic needle-dispensing acupuncture fixture to automatically and continuously eject needles, effectively solving the problems of cumbersome operation and low efficiency of existing acupuncture fixtures.
[0006] To achieve the above objectives, this utility model discloses an automatic needle-dispensing acupuncture fixture, comprising: an outer shell, the outer shell including a first cavity and a second cavity, an outer cover detachably connected to one end of the outer shell near the first cavity, and an open end near the second cavity; a baffle disposed between the first cavity and the second cavity, a needle-dispensing mechanism disposed in the middle of the baffle; the needle-dispensing mechanism including a limiting cavity extending into the second cavity and a guide cylinder coaxially disposed within the limiting cavity; one end of the guide cylinder extending into the first cavity and the other end extending into the second cavity; a sliding groove and a clearance groove provided on the side wall of the outer shell; and a movable shell slidably disposed within the first cavity. The movable shell contains a needle chamber for accommodating acupuncture needles. The movable shell also has an extension head that slides within the limiting cavity. The extension head has a needle outlet hole at its center. One end of the guide cylinder is inserted into the needle outlet hole. The side wall of the movable shell has a toggle block extending into a sliding groove and a drive tooth protruding from the clearance groove. A locking mechanism, mounted on the outer shell, controls engagement or disengagement with the drive tooth. An elastic element, when the drive tooth disengages from the locking mechanism, drives the movable shell to move towards the second cavity until the extension head abuts against the end of the limiting cavity, causing the acupuncture needle to eject from the needle outlet hole.
[0007] By adopting the above scheme, the needle ejection mechanism includes a limiting cavity extending into the second cavity and a guide cylinder coaxially disposed within the limiting cavity. The two ends of the guide cylinder extend into the first and second cavities, respectively. The combined design of the limiting cavity and the guide cylinder provides a precise guiding path for the needle ejection, ensuring accurate needle ejection along a predetermined direction and improving the accuracy of acupuncture. Furthermore, the limiting cavity restricts the movement of the movable shell, ensuring consistent needle length for each ejection by controlling the movement stroke of the movable shell, thereby achieving consistent puncture force and effectively solving the problem of novice doctors struggling to accurately control puncture force and position. The movable shell slides within the first cavity and has a dedicated needle chamber for accommodating acupuncture needles, capable of storing multiple needles and enabling continuous needle ejection. The protruding head on the movable shell slides within the limiting cavity, with the needle ejection hole in the center of the protruding head tightly fitted with one end of the guide cylinder. When the movable shell moves under external force, the guide cylinder can slide stably within the needle ejection hole, ensuring smooth needle ejection. In addition, the actuating block and driving teeth on the side wall of the movable shell are used by the doctor to manually adjust the position of the movable shell and to cooperate with the locking mechanism to achieve automatic needle dispensing. The doctor can manually pull the movable shell back to its initial position using the actuating block to prepare for the next needle dispensing; while the driving teeth interact with the locking mechanism to control the movement and stopping of the movable shell.
[0008] Furthermore, the guide cylinder includes a second section extending into the second cavity, and a first flexible retaining ring is provided inside the second section to provide resistance to the falling of the acupuncture needle.
[0009] By adopting the above-mentioned method, a suitable obstruction can be formed on the acupuncture needles located in the guide tube. This obstruction keeps the acupuncture needles in a relatively stable position within the guide tube, preventing them from easily falling or shifting due to slight shaking, tilting, or external vibration of the tooling. This ensures that the needle body is always in the correct position for withdrawal, laying the foundation for subsequent precise needle withdrawal operations.
[0010] Furthermore, the guide cylinder includes a first section extending into the first cavity. A conical groove is provided at one end of the first section facing the first cavity, and a second flexible retaining ring is provided at the end of the conical groove away from the first cavity. The first section has at least two slits along its circumference, which divide the first section into at least two fan-shaped ring structures with mutually distancing potential energy. When the protruding head abuts against the end of the limiting cavity, the second section partially extends into the needle chamber, and the diameter of the second flexible retaining ring increases. When the second section is completely located within the needle outlet, the second flexible retaining ring shrinks to provide resistance to the falling acupuncture needle.
[0011] By employing the above scheme, the special shape of the conical groove gradually guides the needle to the central axis of the guide cylinder, ensuring the needle maintains linear motion during subsequent ejection. The second flexible retaining ring and the fan-ring structure work together to dynamically adjust the resistance to the needle's descent. When the protruding head abuts against the end of the limiting cavity, the second section extends into the needle chamber. At this time, the fan-ring structures move away from each other under the pressure of the needle chamber, increasing the diameter of the second flexible retaining ring and reducing resistance. This facilitates the needle's smooth entry into the first section of the guide cylinder, preventing excessive resistance in the initial stage from affecting the smoothness of needle entry. When the second section is completely within the needle exit hole, the fan-ring structure is no longer compressed by the needle chamber, restoring some elastic potential energy and causing the second flexible retaining ring to shrink, providing suitable resistance for the needle's descent. This dynamic resistance adjustment mechanism ensures that the needle can smoothly enter the guide cylinder while effectively controlling the needle's descent speed, ensuring the stability and controllability of the needle ejection process.
[0012] Furthermore, the side of the needle chamber facing the second cavity is a conical surface, which is used to provide a force for the acupuncture needle to slide towards the needle outlet.
[0013] By adopting the above scheme, the conical surface design utilizes the weight of the acupuncture needle itself to create a natural sliding tendency towards the needle exit hole. In a normal placement state, such as when used at a vertical or near-vertical angle, the needle will naturally slide down the conical surface under the influence of gravity, moving quickly and stably to the vicinity of the needle exit hole without the need for additional external force. This ensures a smooth and unobstructed needle exit process and reduces the risk of needle exit delays or failures caused by needle jamming.
[0014] Furthermore, a buffer is provided between the needle chamber and the baffle.
[0015] By adopting the above scheme, when the elastic element drives the movable shell to move at high speed, the buffer element absorbs kinetic energy through its own elastic deformation, transforming the rigid collision between the needle chamber and the baffle into flexible buffering. When it retracts to its maximum extent, it precisely abuts the protruding head against the end of the limiting cavity, avoiding mechanical vibration caused by "hard contact" and preventing the limiting cavity from cracking or deforming due to overload impact, thus significantly extending the service life of the device.
[0016] Furthermore, the drive tooth is arranged along the axial direction of the movable shell, and the locking mechanism includes a lever wall and a support spring. The center of the lever wall is connected to the outer shell, and a wedge-shaped portion is provided at one end of the lever wall. The support spring is disposed between the other end of the lever wall and the outer shell. The wedge-shaped portion passes through the clearance groove and forms a wedge-shaped check structure with the drive tooth to prevent the movable shell from sliding towards the second cavity.
[0017] By adopting the above scheme, the wedge-shaped check valve structure transforms the unidirectional movement of the movable shell, which is only allowed to move outwards, into a rigid constraint through the engagement of the wedge-shaped part with the inclined surface of the drive tooth. When the movable shell is pushed forward by the actuating block, the inclined surface of the drive tooth pushes the wedge-shaped part to lift up and pass over the tooth tip, achieving continuous feeding; when the movable shell slides towards the needle outlet due to the elastic element, the right-angled surface of the wedge-shaped part forms a rigid contact with the root of the drive tooth, preventing sliding and avoiding needle exit.
[0018] Furthermore, the outer diameter of the acupuncture needle is not greater than the inner diameter of the guide tube, the outer diameter of the guide tube is not greater than the diameter of the needle outlet, and the outer diameter of the protruding head is smaller than the inner diameter of the limiting cavity.
[0019] By adopting the above method, the accuracy of acupuncture needle insertion can be effectively controlled.
[0020] Furthermore, the length of the acupuncture needle is greater than the length of the guide tube.
[0021] By adopting the above solution, the presence of multiple needles inside the guide cylinder is avoided, thereby preventing the simultaneous output of multiple needles.
[0022] Furthermore, the buffering force of the buffer element is less than the elastic force of the elastic element.
[0023] By adopting the above method, the effect of inertial needle delivery can be avoided.
[0024] Furthermore, the needle chamber is provided with a cover, the cover being interference-fitted with the needle chamber, and the needle chamber having a handle.
[0025] By adopting the above solution, it is convenient to replenish needles in the needle chamber.
[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0027] 1. The movable shell has an independent needle compartment that can be pre-loaded with multiple acupuncture needles / embedding needles. A single loading can complete the entire course of treatment for multiple acupoints, which greatly improves efficiency compared to traditional single-needle tools. When the doctor pulls the movable shell back to the initial position by moving the lever, the locking mechanism automatically locks the drive teeth, greatly reducing the time required to reset the needle dispensing mechanism.
[0028] 2. The moment the drive tooth disengages from the locking mechanism, the elastic element releases its stored energy, pushing the movable shell to complete a 15mm stroke within 0.15 seconds. The needle ejection speed reaches 0.1m / s, achieving an instantaneous response of "triggering and ejecting the needle," meeting dynamic treatment needs, and greatly reducing the total treatment time.
[0029] 3. The needle chamber and the movable shell are connected by a detachable snap-fit, which supports the replacement of the entire needle chamber after a single treatment, greatly improving the efficiency and safety of needle changing, and also ensuring hygiene and avoiding cross-infection. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;
[0032] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;
[0033] Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model;
[0034] Figure 4 for Figure 3 Enlarged view of area A in the middle;
[0035] Figure 5 for Figure 3 Enlarged view of area B in the middle;
[0036] Figure 6 This is a schematic diagram of the cross-sectional structure of the needle body before it falls according to an embodiment of the present invention;
[0037] Figure 7 This is a schematic cross-sectional view of the needle body after it has fallen down, according to an embodiment of the present invention.
[0038] Explanation of key figure labels:
[0039] 1. Outer shell; 11. Baffle; 12. First cavity; 13. Second cavity; 14. Outer cover; 15. Slide groove; 16. Clearance groove; 2. Movable shell; 21. Needle chamber; 211. Conical surface; 22. Needle outlet; 23. Protruding head; 24. Actuating block; 25. Drive gear; 26. Chamber cover; 261. Handle; 3. Snap-fit mechanism; 31. Lever wall; 311. Rotating shaft; 312. Wedge-shaped part; 32. Support spring; 4. Elastic element; 5. Needle outlet mechanism; 51. Limiting cavity; 52. Guide cylinder; 521. First section; 522. Second section; 53. Conical groove; 54. Second flexible retaining ring; 55. Slit; 56. First flexible retaining ring; 6. Buffer element. Detailed Implementation
[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0041] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0042] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.
[0043] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.
[0044] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.
[0045] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.
[0046] Please refer to Embodiment 1 of this utility model. Figures 1 to 7 As shown, an automatic needle-dispensing acupuncture fixture is provided, including a housing 1, a movable housing 2, a snap-fit mechanism 3, and an elastic element 4. The housing 1 is injection molded from medical-grade ABS material and is cylindrical in shape. The interior is divided into a first cavity 12 and a second cavity 13 by a horizontal baffle 11. The top of the first cavity 12 is provided with a detachable threaded outer cover 14 for loading needles; the bottom is connected to the second cavity 13. The bottom of the second cavity 13 is an open outlet for needle ejection. A needle dispensing mechanism 5 is provided in the middle of the baffle 11. The needle dispensing mechanism 5 includes an integrally formed limiting cavity 51 and a coaxially nested metal guide cylinder 52. The inner diameter of the limiting cavity 51 is 5mm, and the inner diameter of the guide cylinder 52 is 0.4mm to adapt to the outer diameter of a standard acupuncture needle. One end of the guide cylinder 52 extends into the first cavity 12, and the other end extends into the second cavity 13. The side wall of the housing 1 is provided with a sliding groove 15 and a clearance groove 16 for motion control of the movable housing 2. The movable shell 2 is slidably disposed within the first cavity 12 and adopts a split design. The upper part of the movable shell 2 is a transparent needle chamber 21 that can hold 20 acupuncture needles. The bottom is a conical surface 211 with an inclination angle of 30°, which uses gravity to make the needle slide towards the needle outlet 22. The bottom of the movable shell 2 is a protruding head 23 with an outer diameter of 4.8 mm, which is clearance-fitted with the limiting cavity 51. The needle outlet 22 is provided in the center. The upper end of the guide cylinder 52 is inserted into the needle outlet 22. The side wall of the movable shell 2 is provided with a toggle block 24 and a drive tooth 25. The toggle block 24 extends from the slide groove 15 for the doctor to push and pull manually. The drive tooth 25 is a unidirectional oblique tooth with a tooth pitch of 2 mm, which is exposed from the clearance groove 16 and cooperates with the locking mechanism 3. When the drive tooth 25 disengages from the locking mechanism 3, the elastic element 4 drives the movable shell 2 to move toward the second cavity 13 until the protruding head 23 abuts against the end of the limiting cavity 51, so that the acupuncture needle pops out from the needle outlet 22.
[0047] In one specific embodiment, the locking mechanism 3 includes a lever wall 31 and a support spring 32. The lever wall 31 is hinged to the inner wall of the outer shell 1 via a pivot 311. One end has a wedge-shaped portion 312 with a 45° angle, forming a wedge-shaped check structure with the drive tooth 25. The other end is connected to the support spring 32, which has an elastic coefficient of 5 N / mm. Under normal conditions, the support spring 32 pushes the lever wall 31 to engage the wedge-shaped portion 312 with the tooth groove of the drive tooth 25, preventing the movable shell 2 from sliding towards the second cavity 13. The elastic element 4 is a compression spring with a preload of 8 N, installed between the movable shell 2 and the outer cover 14. When the locking mechanism 3 is unlocked, the elastic element 4 pushes the movable shell 2 to complete a 15 mm stroke within 0.15 seconds, causing the needle to eject at a speed of 0.1 m / s.
[0048] To prevent the acupuncture needles from sliding freely within the guide cylinder 52 due to their own weight during the driving process, in some embodiments, the guide cylinder 52 is divided into a first segment 521 and a second segment 522. The first segment 521 extends into the first cavity 12, with a tapered groove 53 at its top (preferably with a 60° cone angle), and a second flexible retaining ring 54 at its end (preferably made of silicone with an inner diameter of 0.38 mm). The first segment 521 has two or more circumferentially distributed slits 55; in this embodiment 1, four slits 55 are provided, forming four radially expandable fan-shaped rings. The second segment 522 extends into the second cavity 13, and a first flexible retaining ring 56 is provided inside (preferably made of silicone with an inner diameter of 0.39 mm).
[0049] When the doctor presses the support spring 32, the lever wall 31 disengages the wedge-shaped portion 312 from the drive tooth 25. At this time, the elastic force of the elastic element 4 causes the movable shell 2 to abut against the end of the limiting cavity 51. The second section 522 of the guide cylinder 52 enters the needle chamber 21. The fan ring is not compressed and its own dispersing force causes the second flexible retaining ring 54 to expand to 0.42mm. The needle body smoothly enters the guide cylinder 52 and is blocked by the first flexible retaining ring 56, preventing it from passing through the guide cylinder 52. When the doctor moves the actuating block 24 to pull the movable shell 2 back, the wedge-shaped portion 312 of the lever wall 31 engages with the drive tooth 25 layer by layer. At this time, the fan ring is fully inserted into the protruding head 23, and the second flexible retaining ring 54 contracts to 0.38mm, providing downward resistance together with the first flexible retaining ring 56 to prevent the needle body from accidentally slipping out.
[0050] Since the protruding head 23 always impacts the end of the limiting cavity 51 when the movable shell 2 is subjected to the elastic force of the elastic element 4, it is necessary to strengthen the structure of the limiting cavity 51 to avoid damage to it. This includes, but is not limited to, replacing the material or adding reinforcing ribs. Preferably, in some embodiments, a buffer 6 is provided between the needle chamber 21 and the baffle 11. The buffer 6 can be a silicone gasket placed between the bottom of the needle chamber 21 and the baffle 11, with a buffering force of 3N, which is less than the 8N elastic force of the elastic element 4, ensuring buffered contact during high-speed movement of the movable shell 2 and reducing impact noise. The buffer 6 can also be a buffer spring, which can realize elastic force reset and, when squeezed by the elastic element 4, will not cause a large amplitude. When the elastic element 4 drives the movable shell 2 to move at high speed, the buffer 6 absorbs kinetic energy through its own elastic deformation, transforming the rigid collision between the needle chamber 21 and the baffle 11 into flexible buffering. When it retracts to its maximum extent, the protruding head 23 comes into contact with the end of the limiting cavity 51, which avoids mechanical vibration caused by "hard contact" and prevents the limiting cavity 51 from cracking or deforming due to overload impact, thus significantly extending the service life of the device.
[0051] In some embodiments, the needle chamber 21 can be replaced as a whole to avoid cross-infection, similar to the film in a camera. This offers the advantage of safety and hygiene, but it makes it inconvenient for doctors to insert needles themselves. Therefore, in some embodiments, the needle chamber 21 is designed to be detachable, with an interference-fit cover 26 at the top and a handle 261. The handle 261 includes, but is not limited to, a pull rope or a carrying handle. After treatment, pulling the handle 261 of the cover 26 allows the needle chamber 21 to be removed for replacement or additional needle insertion.
[0052] It should be noted that in other embodiments, the specific dimensions of the tooling parts are not limited, but the following conditions must be met: the outer diameter of the acupuncture needle is not greater than the inner diameter of the guide cylinder 52; the outer diameter of the guide cylinder 52 is not greater than the diameter of the needle outlet 22; the outer diameter of the protruding head 23 is smaller than the inner diameter of the limiting cavity 51, which can effectively control the needle outlet accuracy; the length of the acupuncture needle is greater than the length of the guide cylinder 52 to avoid multiple needles inside the guide cylinder 52, thereby preventing multiple needles from exiting simultaneously. The buffering force of the buffer member 6 is less than the elastic force of the elastic member 4 to avoid affecting the inertial needle outlet effect.
[0053] The workflow of this utility model is as follows:
[0054] Needle loading: Open the outer cover 14, insert the needle chamber 21 pre-loaded with 20 acupuncture needles into the movable shell 2, and close the outer cover 14. The needle body is guided down the conical surface 211 to above the needle outlet 22, and the first flexible retaining ring 56 prevents it from falling.
[0055] Triggering needle ejection: Pressing the end of lever wall 31 causes wedge 312 to disengage from drive tooth 25, releasing elastic element 4 and pushing movable shell 2 down 15mm. The needle body is ejected from guide cylinder 52 due to inertia, and at the same time, the next needle body in needle chamber 21 falls into guide cylinder 52 and is temporarily held by second flexible retaining ring 54. Then, the second section 522 of guide cylinder 52 enters needle chamber 21, the second flexible retaining ring 54 expands, and the needle body enters guide cylinder 52 ready to be ejected.
[0056] Reset: The movable shell 2 is pulled back to its initial position by the toggle block 24, and the drive tooth 25 engages and locks with the wedge part 312 tooth by tooth. The first flexible retaining ring 56 and the second flexible retaining ring 54 simultaneously lock the needle, waiting for the next trigger to release the needle.
[0057] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0058] 1. The movable shell 2 has an independent needle compartment 21, which can be pre-loaded with multiple acupuncture needles / embedding needles. A single loading can complete the entire course of treatment for multiple acupoints, which greatly improves efficiency compared to traditional single needle tools. When the doctor pulls the movable shell 2 back to the initial position by moving the lever 24, the locking mechanism 3 automatically locks the drive teeth 25, greatly reducing the reset time of the needle dispensing mechanism 5.
[0059] 2. The moment the drive tooth 25 disengages from the locking mechanism 3, the elastic element 4 releases its stored energy, pushing the movable shell 2 to complete a 15mm stroke within 0.15 seconds. The needle ejection speed reaches 0.1m / s, achieving an instantaneous response of "triggering and ejecting the needle", meeting the dynamic treatment needs and greatly reducing the total treatment time.
[0060] 3. The needle chamber 21 and the movable shell 2 are connected by a detachable snap-fit, which supports the replacement of the entire needle chamber 21 after a single treatment, greatly improving the efficiency and safety of needle replacement, and also ensuring hygiene and avoiding cross-infection.
[0061] The above provides a detailed description of an automatic needle-dispensing acupuncture fixture disclosed in the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the automatic needle-dispensing acupuncture fixture and its core idea. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. An automatic needle dispensing acupuncture fixture, characterized in that, include: The outer shell (1) includes a first cavity (12) and a second cavity (13) inside. An outer cover (14) is detachably connected to one end of the outer shell (1) near the first cavity (12), and the other end near the second cavity (13) is open. A baffle (11) is provided between the first cavity (12) and the second cavity (13). A needle-out mechanism (5) is provided in the middle of the baffle (11). The needle-out mechanism (5) includes a limiting cavity (51) extending into the second cavity (13) and a guide cylinder (52) coaxially provided in the limiting cavity (51). One end of the guide cylinder (52) extends into the first cavity (12), and the other end extends into the second cavity (13). A sliding groove (15) and a clearance groove (16) are provided on the side wall of the outer shell (1). The movable shell (2) is slidably disposed in the first cavity (12). The movable shell (2) is provided with a needle chamber (21) for accommodating acupuncture needles. The movable shell (2) is provided with an extension head (23) slidably disposed in the limiting cavity (51). The extension head (23) is provided with a needle outlet hole (22) in the center. One end of the guide cylinder (52) is inserted into the needle outlet hole (22). The side wall of the movable shell (2) is provided with a toggle block (24) extending out of the sliding groove (15) and a drive tooth (25) protruding from the clearance groove (16). A snap-fit mechanism (3) is mounted on the housing (1) and is used to control the snap-fit or disengagement with the drive tooth (25); When the elastic element (4) and the driving tooth (25) disengage from the locking mechanism (3), the elastic element (4) drives the movable shell (2) to move toward the second cavity (13) until the protruding head (23) abuts against the end of the limiting cavity (51), so that the acupuncture needle pops out from the needle outlet (22).
2. The automatic needle dispensing acupuncture fixture according to claim 1, characterized in that, The guide tube (52) includes a second section (522) extending into the second cavity (13), and a first flexible retaining ring (56) is provided inside the second section (522) to provide resistance to the falling of the acupuncture needle.
3. The automatic needle dispensing acupuncture fixture according to claim 2, characterized in that, The guide tube (52) includes a first section (521) extending into the first cavity (12). A conical groove (53) is provided at one end of the first section (521) facing the first cavity (12). A second flexible retaining ring (54) is provided at the end of the conical groove (53) away from the first cavity (12). At least two slits (55) are provided along the circumference of the first section (521). The at least two slits (55) divide the first section (521) into at least two fan-shaped ring structures with mutually distancing potential energy. When the protruding head (23) abuts against the end of the limiting cavity (51), the second section (522) partially extends into the needle chamber (21), and the diameter of the second flexible retaining ring (54) increases. When the second section (522) is completely located in the needle outlet (22), the second flexible retaining ring (54) shrinks to provide resistance to the falling of the acupuncture needle.
4. The automatic needle dispensing acupuncture fixture according to claim 1, characterized in that, The side of the needle chamber (21) facing the second cavity (13) is a conical surface (211), which is used to provide a force for the acupuncture needle to slide toward the needle outlet (22).
5. The automatic needle dispensing acupuncture fixture according to claim 4, characterized in that, A buffer (6) is provided between the needle chamber (21) and the baffle (11).
6. The automatic needle dispensing acupuncture fixture according to claim 1, characterized in that, The drive tooth (25) is arranged along the axial direction of the movable shell (2). The snap-fit mechanism (3) includes a lever wall (31) and a support spring (32). The center of the lever wall (31) is connected to the outer shell (1). One end of the lever wall (31) is provided with a wedge-shaped part (312). The support spring (32) is disposed between the other end of the lever wall (31) and the outer shell (1). The wedge-shaped part (312) passes through the clearance groove (16) and forms a wedge-shaped check structure with the drive tooth (25) to prevent the movable shell (2) from sliding towards the second cavity (13).
7. The automatic needle dispensing acupuncture fixture according to claim 1, characterized in that, The outer diameter of the acupuncture needle is not greater than the inner diameter of the guide cylinder (52), the outer diameter of the guide cylinder (52) is not greater than the diameter of the needle outlet (22), and the outer diameter of the protruding head (23) is smaller than the inner diameter of the limiting cavity (51).
8. The automatic needle dispensing acupuncture fixture according to claim 1, characterized in that, The length of the acupuncture needle is greater than the length of the guide tube (52).
9. An automatic needle dispensing acupuncture fixture according to claim 5, characterized in that, The buffering force of the buffer (6) is less than the elastic force of the elastic element (4).
10. An automatic needle dispensing acupuncture fixture according to claim 1, characterized in that, The needle chamber (21) is provided with a cover (26), the cover (26) is interference-fitted to the needle chamber (21), and the needle chamber (21) has a handle (261).