Multifunctional bloodletting needle

Abstract

The invention provides a multifunctional bloodletting needle, relates to the technical field of medical equipment, and solves the technical problems that in the prior art, when ear bloodletting is carried out, due to the fact that the outline area of an ear is small and the ear is of a complex arc-shaped structure, the operation difficulty of medical staff is increased and the medical staff is easily hurt by using a traditional needle head. According to the multifunctional bloodletting needle, a needle tube is provided with a first containing cavity and a second containing cavity; the auricle attaching piece is arranged in the first containing cavity in a sliding mode, and a puncture needle used for bloodletting is installed on the auricle attaching piece; the first driving mechanism is used for driving the auricle fitting piece to stretch out and draw back; the single-point puncture mechanism comprises a plum-blossom-shaped needle head part and a linear needle head part; the second driving mechanism is used for driving the single-point puncture mechanism in the second containing cavity to stretch out and draw back. Due to the fact that the auricle-imitating tip of the auricle attaching piece is designed to be the semi-arc block, the auricle-imitating tip can be attached to the outline of the ear more tightly during ear bloodletting, and errors caused by misoperation are reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a multifunctional bloodletting needle. Background Technology

[0002] Traditional bloodletting treatments typically employ injection needles or three-edged needles. While effective, these methods have limitations when addressing specific areas requiring bloodletting. For instance, in ear bloodletting, the ear's small size and complex curved structure make traditional needles not only more difficult for medical personnel but also increase the risk of injury. Furthermore, for bloodletting areas of varying sizes and shapes, traditional methods require multiple punctures to cover the entire treatment area, increasing patient discomfort and prolonging treatment time.

[0003] Existing techniques also face challenges when it comes to bloodletting on other parts of the body or individual acupoints. To achieve the desired therapeutic effect, doctors need to adjust the depth and range of acupuncture according to the specific situation. This process is often time-consuming and laborious, and it is difficult to ensure consistency and accuracy in each operation.

[0004] Therefore, there is an urgent need in the market for a multifunctional bloodletting device that can adapt to various bloodletting needs, is easy to operate, and reduces patient pain and the risk of injury to medical personnel. To this end, this application proposes a dual-head replaceable needle type multifunctional bloodletting device, aiming to solve the above problems and improve the overall efficiency and safety of bloodletting treatment. Summary of the Invention

[0005] The purpose of this invention is to provide a multifunctional phlebotomy needle to solve the technical problem in the prior art where, during ear bloodletting, the small area and complex arc-shaped structure of the ear make the use of traditional needles difficult for medical personnel and can easily cause injury. The preferred technical solutions provided by this invention offer numerous technical advantages, which are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A multifunctional bloodletting needle, comprising: The needle has a first receiving cavity and a second receiving cavity with openings at both ends; An auricular fitting is slidably disposed in a first receiving cavity. A bloodletting puncture needle is installed on the auricular fitting, and the length direction of the puncture needle, i.e. the puncture direction, is parallel to the sliding direction of the auricular fitting. The first drive mechanism is installed in the first receiving cavity and is installed in conjunction with the auricle fitting to drive the auricle fitting to extend and retract. A single-point puncture mechanism is slidably disposed in the second receiving cavity. The single-point puncture structure includes interchangeable cloverleaf needle pieces and linearly arranged straight needle pieces. The second drive mechanism is installed in the second receiving cavity and is used to drive the single-point puncture mechanism in the second receiving cavity to extend and retract.

[0007] Furthermore, the auricle fitting component includes a semi-circular arc block that mimics the tip of the auricle. The concave sidewall of the semi-circular arc block is used to fix and connect the bloodletting puncture needle, and the convex sidewall of the semi-circular arc block is used to connect the first driving mechanism.

[0008] Furthermore, the first drive mechanism includes a positioning plate, a first spring, and a drive rod; The positioning plate is fixedly connected to the needle tube and to the side wall of the first receiving cavity; the first spring is disposed in the first receiving cavity, one end of the first spring abuts against the positioning plate, the other end of the first spring is connected to one end of the drive rod for pulling the drive rod to retract, and the other end of the drive rod extends outward along the first receiving cavity and is fixedly connected to the semi-circular block.

[0009] Furthermore, the first driving mechanism includes a sliding plate and a positioning shaft. One end of the positioning shaft is fixedly connected to the bottom surface of the first receiving cavity, and the other end of the positioning shaft is fixedly connected to the surface of the positioning plate. The sliding plate is slidably disposed on the positioning shaft. The first spring is sleeved on the positioning shaft and fixedly connected to the sliding plate to push the sliding plate against the bottom surface of the first receiving cavity. The driving rod is fixedly connected to the receiving cavity.

[0010] Furthermore, the first driving mechanism includes a first actuating block, and the side wall of the needle tube is provided with a first through groove communicating with the first receiving cavity. The first actuating block is slidably disposed in the first through groove and fixedly connected to the driving rod.

[0011] Furthermore, the single-point puncture mechanism includes a positioning sleeve, an adjusting plate, a single-point fixing seat, and a linear fixing seat; The positioning sleeve is rotatably disposed at the end of the needle tube where the second receiving cavity is opened. The plum blossom fixing seat and the straight fixing seat are slidably disposed in the positioning sleeve. The plum blossom needle tip is correspondingly and fixedly connected to the plum blossom fixing seat, and the straight needle tip is fixedly connected to the straight fixing seat. The adjusting plate is rotatably mounted on the end of the positioning sleeve, and the adjusting plate has a through hole for the corresponding straight needle or plum blossom needle to extend out.

[0012] Furthermore, the single-point puncture mechanism also includes a limiting sleeve and a positioning ring. The limiting sleeve is rotatably mounted on the through hole and is threadedly connected to adjust the length of the limiting sleeve in the depth direction of the through hole. The straight needle or the clover needle extends out from inside the limiting sleeve. Two positioning rings are respectively sleeved and fixed on the straight needle and the clover needle to abut against the end of the limiting sleeve when extended.

[0013] Furthermore, the single-point puncture mechanism also includes sliders that are respectively fixedly connected to the straight needle head and the clover needle head; The side wall of the positioning sleeve is provided with two sliding grooves for the slider to slide along the axial direction of the needle tip. The sliders on the straight needle tip and the plum blossom needle tip slide in the corresponding sliding grooves.

[0014] Furthermore, the second drive mechanism includes a second spring, a limiting plate, a transmission rod, a positioning rod, and a transmission plate; The limiting plate is fixedly connected to the inner wall of the second receiving cavity, and one end of the positioning rod is fixedly connected to the surface of the limiting plate, while the other end is fixedly connected to the bottom surface of the second receiving cavity. The transmission plate is slidably mounted on the positioning rod, one end of the second spring abuts against the transmission plate, and the other end of the second spring abuts against the limiting plate; One end of the transmission rod is fixedly connected to the transmission plate, and the other end extends toward the positioning sleeve to push the single-point fixing seat or the linear fixing seat out.

[0015] Furthermore, the second drive mechanism also includes a second actuating block and a third actuating block; The needle tube has two through grooves, a second through groove and a third through groove, which are connected to the second receiving cavity on its side wall. The second actuating block is slidably disposed in the second through groove and fixedly connected to the single-point fixing seat. The third actuating block is slidably disposed in the third through groove and fixedly connected to the linear fixing seat.

[0016] This invention provides a multifunctional bloodletting needle, which, through innovative design, solves the problems of high operational difficulty, potential harm to medical personnel, and increased pain for patients in existing technologies. The following are the technical effects achieved by this device: Improved ease of operation and accuracy: The auricular fitting's semi-circular tip design, with its concave sidewall fixed to the bloodletting needle, allows for a closer fit to the ear's contour during bloodletting, reducing errors caused by improper operation. The first drive mechanism, working in conjunction with the auricular fitting, precisely controls the puncture depth and position, improving consistency and accuracy.

[0017] Reducing the risk of injury to medical staff: Using a drive mechanism (such as a first drive mechanism and a second drive mechanism) instead of manual operation not only reduces the workload of medical staff but also lowers the risk of injury caused by direct hand contact with the needle. This design is particularly important when handling complex areas such as ear bleeding.

[0018] Reducing patient discomfort and shortening treatment time: The single-point puncture mechanism includes interchangeable cloverleaf needle tips and linearly arranged straight needle tips, allowing for flexible selection of the appropriate needle type according to different bloodletting needs. This allows for coverage of a larger treatment area in a single procedure, avoiding the discomfort of multiple punctures and significantly reducing patient pain and treatment time.

[0019] Adaptable to diverse bloodletting needs: The multifunctional bloodletting needle designed in this invention is not only suitable for bloodletting treatment of complex structures such as the ear, but can also meet the bloodletting requirements of other parts of the body or individual acupoints by changing different types of needles. This greatly expands the application range of the device and improves the overall treatment efficiency.

[0020] Enhancing Treatment Outcomes: Precise puncture control and appropriate needle selection help ensure ideal therapeutic effects with each procedure, thereby improving the overall success rate of bloodletting therapy. Furthermore, combined with modern medical understanding and technological advancements in bloodletting therapy, this device is expected to further optimize traditional treatment methods, providing patients with a better medical experience.

[0021] In summary, the multifunctional bloodletting needle provided by this invention not only effectively solves many problems in the prior art, but also improves the safety, accuracy and comfort of bloodletting treatment in multiple aspects, and has important clinical application value. Attached Figure Description

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

[0023] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the first internal structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the second internal structure provided in an embodiment of the present invention. Figure 4 This is a schematic diagram of the plum blossom needle structure provided in an embodiment of the present invention; Figure 5This is a schematic diagram of the linear needle structure provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the semi-circular block structure provided in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 100, needle tube; 110, first receiving cavity; 120, second receiving cavity; 200, auricle fitting piece; 210, semi-circular block; 220, connecting shaft; 230, plum blossom needle; 240, straight needle; 300, first drive mechanism; 310, positioning shaft; 320, positioning plate; 330, drive rod; 340, first through groove; 350, first actuating block; 360, first spring; 370, sliding plate; 400, single-point puncture mechanism; 4 10. Positioning sleeve; 420. Through hole; 430. Distance limiting sleeve; 440. Single-point fixing seat; 450. Linear fixing seat; 460. Slide groove; 470. Positioning ring; 480. Adjusting plate; 490. Slider; 500. Second drive mechanism; 510. Limiting plate; 520. Second spring; 530. Positioning rod; 540. Transmission plate; 550. Transmission rod; 560. Second through groove; 570. Second actuating block; 580. Third through groove; 590. Third actuating block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0026] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] The following is in conjunction with the appendix Figure 1-6 To further illustrate this application, an embodiment of this application discloses a multifunctional bloodletting needle.

[0029] Reference Figure 1 and Figure 2 As shown, the present invention provides a multifunctional bloodletting needle, including a needle tube 100, an auricle fitting 200, a first driving mechanism 300, a single-point puncture mechanism 400, and a second driving mechanism 500.

[0030] The needle tube 100 has a first receiving cavity 110 and a second receiving cavity 120 with openings at the ends, respectively. A first driving mechanism 300 is disposed in the first receiving cavity 110, and an auricle fitting 200 is slidably disposed in the first receiving cavity 110 and is driven to extend and retract by the first driving mechanism 300. A second driving mechanism 500 is disposed in the second receiving cavity 120, and a single-point puncture mechanism 400 is disposed in the second receiving cavity 120 and is driven to extend and retract by the second driving mechanism 500.

[0031] Reference Figure 2 and Figure 3 As shown, the first drive mechanism 300 includes a positioning plate 320, a first spring 360, a drive rod 330, a sliding plate 370, a positioning shaft 310, and a first actuating block 350.

[0032] The positioning plate 320 is installed inside the first receiving cavity 110, and its sidewall is fixedly connected to the inner wall of the first receiving cavity 110, thereby dividing the first receiving cavity 110 into two independent chambers, inner and outer. This design not only improves the overall stability of the device, but also effectively prevents external impurities from entering the interior and affecting the operation of the device. One end of the positioning shaft 310 is fixedly connected to the surface of the positioning plate 320, and the other end is fixedly connected to the bottom surface of the first receiving cavity 110. The sliding plate 370 is slidably disposed inside the first receiving cavity 110 and sleeved on the positioning shaft 310 to ensure its movement trajectory is accurate. The first spring 360 is sleeved on the positioning shaft 310, with one end abutting against the sidewall of the positioning plate 320 and the other end abutting against the sliding plate 370. The elastic force provided by the first spring 360 drives the sliding plate 370 to abut against the bottom surface of the first receiving cavity 110. This design utilizes the elastic recovery characteristics of the spring, enabling the auricle fitting 200 to complete the retraction action smoothly and quickly.

[0033] Two drive rods 330 are provided. One end of each drive rod 330 is fixedly connected to the sliding plate 370, and the other end extends along the length of the needle tube 100 and passes through the opening of the positioning plate 320 toward the first receiving cavity 110, and is finally fixedly connected to the auricular fitting 200 to realize the drive control of the auricular fitting 200. In this way, the auricular fitting 200 can perform telescopic operation under precise control, which greatly improves the stability of operation.

[0034] Furthermore, the side wall of the needle tube 100 has a first through groove 340 communicating with the first receiving cavity 110. The first actuating block 350 is slidably disposed in the first through groove 340 and fixedly connected to the drive rod 330. In use, pushing the first actuating block 350 causes the drive rod 330 to slide outward, thereby extending the auricular fitting 200 to perform puncture and bloodletting operations. During this process, the first spring 360 is compressed to overcome its elasticity. When the puncture is completed and the pushing force is released, the auricular fitting 200 will quickly retract back to its initial position under the action of the spring.

[0035] Reference Figure 2 and Figure 3 As shown, the auricle fitting component 200 includes a semi-circular arc block 210 that mimics the tip of the auricle and a connecting shaft 220.

[0036] The connecting shaft 220 is fixedly connected to the semi-circular block 210 and is designed to be rotatably mounted on the two drive rods 330 to achieve the angle adjustment function of the semi-circular block 210. This adjustable angle design allows for precise adjustments based on individual patient differences, thereby further improving the flexibility and adaptability of the operation and ensuring that the optimal position and angle are achieved for each puncture. A pad can also be placed between the semi-circular block 210 and the drive rods 330 to enhance the stability and reliability of the structure and prevent positional displacement or damage due to external pressure.

[0037] Reference Figure 2 and Figure 6 As shown, the concave sidewall of the semicircular block 210 is used to fix and connect the bloodletting puncture needle. By fixing the puncture needle along the extension direction of the inner arc sidewall of the semicircular block 210, it can be ensured that the needle tip is accurately aligned with the predetermined puncture point, reducing the possibility of misoperation. The design of the semicircular block 210 mimics the natural shape of the human auricle. During the puncture and bloodletting process, the puncture needle located on the semicircular block 210 can better conform to the contour of the ear, ensuring the accuracy of the puncture position.

[0038] Reference Figure 2 and Figure 3 As shown, the second drive mechanism 500 includes a second spring 520, a limiting plate 510, a transmission rod 550, a positioning rod 530, and a transmission plate 540.

[0039] A limiting plate 510 is installed inside the second receiving cavity 120, and its sidewall is fixedly connected to the inner wall of the second receiving cavity 120, thereby dividing the second receiving cavity 120 into two independent chambers. This design not only improves the overall stability of the device, but also effectively prevents external impurities from entering the interior and affecting the operation of the equipment. One end of the positioning rod 530 is fixedly connected to the surface of the limiting plate 510, and the other end is fixedly connected to the bottom surface of the second receiving cavity 120. The transmission plate 540 is slidably disposed inside the second receiving cavity 120 and sleeved on the positioning rod 530 to ensure its movement trajectory is accurate. A second spring 520 is sleeved on the positioning rod 530, with one end abutting against the sidewall of the limiting plate 510 and the other end abutting against the transmission plate 540. The elastic force provided by the second spring 520 drives the transmission plate 540 to abut against the bottom surface of the first receiving cavity 110. This design utilizes the elastic recovery characteristics of the spring, enabling the auricle fitting 200 to complete the retraction action smoothly and quickly.

[0040] A transmission rod 550 is provided, with one end fixedly connected to the transmission plate 540, and the other end extending along the length of the needle tube 100 and passing through the opening of the limiting plate 510 toward the second receiving cavity 120, and finally fixedly connected to the single-point puncture mechanism 400. In this way, the auricular fitting 200 can perform telescopic operation under precise control, greatly improving the stability of the operation.

[0041] Reference Figure 2 and Figure 3 As shown, the single-point puncture mechanism 400 includes a tufted needle tip assembly, a straight needle tip assembly, a positioning sleeve 410, and an adjustment plate 480. This design achieves a variety of needle tip selections and flexible applications through the combination of modular components.

[0042] The positioning sleeve 410 is rotatably mounted at the end of the needle tube 100 where the second receiving cavity 120 is opened. The clover-shaped needle tip and the straight needle tip are mounted on the positioning sleeve 410 and can rotate with the rotation of the positioning sleeve 410. Both can slide along the axial direction of the positioning sleeve 410. This design combining rotation and sliding makes needle replacement simple and quick, improves operating efficiency, and reduces the risk of misoperation.

[0043] Reference Figure 2 and Figure 4 As shown, the clover needle assembly includes a clover needle 230 and a puncture needle mounted thereon, while the straight needle assembly includes a straight needle 240 and a puncture needle linearly mounted on the straight needle 240.

[0044] The puncture needles on the plum blossom needle 230 are installed in a plum blossom pattern, so that the puncture points are concentrated during the puncture process and there are multiple puncture and bleeding ports. For example, the plum blossom needle 230 has six plum blossom petals, that is, each petal and the center of the flower is equipped with a puncture needle.

[0045] Alternatively, only three puncture needles can be installed on the plum blossom needle 230, and the three puncture needles are in a straight line, which can achieve puncture in a straight direction.

[0046] Reference Figure 2 and Figure 5 As shown, the diameter of the puncture needle on the straight needle 240 is smaller than that of the puncture needle on the clover needle 230, and the puncture needles on the straight needle 240 are arranged along the length of the straight needle 240 to form a puncture needle in a straight direction, thereby performing multiple punctures in a straight direction during the puncture process.

[0047] Furthermore, the distance between the head and tail of the linear puncture needles on the linear needle tip 240 is less than the distance between the head and tail of the three puncture needles installed on the quincunx needle tip 230. This results in a shorter distance in the linear direction and a denser number of puncture needles, allowing for bloodletting through the patient's ear. The denser linear needle tip 240, with its shorter distance in the linear direction, reduces the number of puncture movements during the puncture process, allowing the patient to experience approximately one puncture pain at a time, thus reducing patient pain while increasing the number of puncture points.

[0048] Furthermore, the puncture needle located on the straight needle tip 240 has a smaller diameter and length than the puncture needle on the floret needle tip 230, which makes it easier to perform punctures on the ear, where the puncture area is smaller.

[0049] An adjusting plate 480 is rotatably mounted on the top of the positioning sleeve 410 to seal the positioning sleeve 410. The adjusting plate 480 has a through hole 420 for the protrusion of a swivel needle or a straight needle. This design ensures the safe protection of the needle when not in use and allows for quick and accurate exposure of the required needle when needed.

[0050] In addition, the single-point puncture mechanism 400 also includes a single-point fixing seat 440, a linear fixing seat 450, a limiting sleeve 430, a positioning ring 470, and two sliders 490. The two sliders 490 are fixedly connected to the single-point fixing seat 440 and the linear fixing seat 450, respectively. Two grooves 460 are formed on the inner wall of the limiting sleeve along its axial direction, and the sliders 490 on the single-point fixing seat 440 and the linear fixing seat 450 are correspondingly fixedly connected within these two grooves 460. The clover-shaped needle tip and the linear needle tip are respectively fixedly connected to the single-point fixing seat 440 and the linear fixing seat 450. Two positioning rings 470 are provided, respectively sleeved and fixedly connected to the linear needle tip and the clover-shaped needle tip. The limiting sleeve 430 is rotatably mounted on the through hole 420 and uses a threaded connection. This threaded connection allows for precise adjustment of the position of the limiting sleeve 430, thereby achieving precise control of the needle extension distance.

[0051] During use, by adjusting the extension distance of the limiting sleeve 430 on the through hole 420, when the straight needle or the plum blossom needle extends, its positioning ring 470 just abuts against the end of the limiting sleeve 430, thereby achieving the adjustment of the extension distance of the straight needle or the plum blossom needle.

[0052] The second drive mechanism 500 also includes a second actuating block 570 and a third actuating block 590. The side wall of the needle tube 100 has two through grooves 560 and 580 that communicate with the second receiving cavity 120. The second actuating block 570 is slidably disposed in the second through groove 560 and fixedly connected to the single-point fixing seat 440. The third actuating block 590 is slidably disposed in the third through groove 580 and fixedly connected to the linear fixing seat 450.

[0053] During use, select either a straight needle head or a swivel needle head as needed. After selection, rotate the positioning sleeve 410 to move the corresponding single-point fixing seat 440 and straight fixing seat 450 above the end of the transmission rod 550. At the same time, rotate the adjusting plate 480 so that the through hole 420 is positioned above the end of the transmission rod 550, and rotate the extension of the limiting sleeve 430 as needed. Then, push the second toggle block 570 or the third toggle block 590 to overcome the elastic force of the second spring 520 and extend the straight needle head or swivel needle head.

[0054] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multifunctional bloodletting needle, characterized in that, include: The needle tube (100) has a first receiving cavity (110) and a second receiving cavity (120) with the opening located at the end of each end. The auricular fitting (200) is slidably disposed in the first receiving cavity (110). A bloodletting puncture needle is installed on the auricular fitting (200). The length direction of the puncture needle, i.e. the puncture direction, is parallel to the sliding direction of the auricular fitting (200). The first drive mechanism (300) is installed in the first receiving cavity (110) and is installed in conjunction with the auricle fitting (200) to drive the auricle fitting (200) to extend and retract; A single-point puncture mechanism (400) is slidably disposed in the second receiving cavity (120). The single-point puncture structure includes interchangeable cloverleaf needle pieces and linearly arranged straight needle pieces. The second drive mechanism (500) is installed in the second receiving cavity (120) and is used to drive the single-point puncture mechanism (400) in the second receiving cavity (120) to extend and retract.

2. The multifunctional bloodletting needle according to claim 1, characterized in that, The auricle fitting component (200) includes a semi-circular arc block (210) that resembles the tip of the auricle. The concave sidewall of the semi-circular arc block (210) is used to fix and connect the bloodletting puncture needle, and the convex sidewall of the semi-circular arc block (210) is used to connect the first drive mechanism (300).

3. A multifunctional bloodletting needle according to claim 2, characterized in that, The first drive mechanism (300) includes a positioning plate (320), a first spring (360), and a drive rod (330); The positioning plate (320) is fixedly connected to the needle tube (100) and fixedly connected to the side wall of the first receiving cavity (110); the first spring (360) is disposed in the first receiving cavity (110), one end of the first spring (360) abuts against the positioning plate (320), the other end of the first spring (360) is connected to one end of the drive rod (330) for pulling the drive rod (330) to retract, and the other end of the drive rod (330) extends outward along the first receiving cavity (110) and is fixedly connected to the semi-circular block (210).

4. A multifunctional bloodletting needle according to claim 3, characterized in that, The first driving mechanism (300) includes a sliding plate (370) and a positioning shaft (310). One end of the positioning shaft (310) is fixedly connected to the bottom surface of the first receiving cavity (110), and the other end of the positioning shaft (310) is fixedly connected to the surface of the positioning plate (320). The sliding plate (370) is slidably disposed on the positioning shaft (310). The first spring (360) is sleeved on the positioning shaft (310) and fixedly connected to the sliding plate (370) to push the sliding plate (370) against the bottom surface of the first receiving cavity (110). The driving rod (330) is fixedly connected to the receiving cavity.

5. A multifunctional bloodletting needle according to claim 3, characterized in that, The first driving mechanism (300) includes a first actuating block (350), and the side wall of the needle tube (100) is provided with a first through groove (340) communicating with the first receiving cavity (110). The first actuating block (350) is slidably disposed in the first through groove (340) and fixedly connected to the driving rod (330).

6. A multifunctional bloodletting needle according to claim 1, characterized in that, The single-point puncture mechanism (400) includes a positioning sleeve (410), an adjusting plate (480), a single-point fixing seat (440), and a linear fixing seat (450). The positioning sleeve (410) is rotatably disposed at the end of the needle tube (100) that opens the second receiving cavity (120). The plum blossom fixing seat and the straight fixing seat (450) are slidably disposed in the positioning sleeve (410). The plum blossom needle head is fixedly connected to the plum blossom fixing seat, and the straight needle head is fixedly connected to the straight fixing seat (450). The adjusting plate (480) is rotatably disposed at the end of the positioning sleeve (410), and the adjusting plate (480) has a through hole (420) for the corresponding straight needle or plum blossom needle to extend out.

7. A multifunctional bloodletting needle according to claim 6, characterized in that, The single-point puncture mechanism (400) further includes a limiting sleeve (430) and a positioning ring (470). The limiting sleeve (430) is rotatably disposed on the through hole (420) and is threadedly connected to adjust the length of the limiting sleeve in the depth direction of the through hole (420). The straight needle or the clover needle extends out from inside the limiting sleeve. The positioning ring (470) has two rings respectively sleeved and fixed on the straight needle and the clover needle to abut against the end of the limiting sleeve when extended.

8. A multifunctional bloodletting needle according to claim 6, characterized in that, The single-point puncture mechanism (400) also includes sliders (490) that are respectively fixedly connected to the straight needle tip and the clover needle tip. The side wall of the positioning sleeve (410) is provided with two grooves (460) for the slider (490) to slide along the axial direction of the needle tip. The sliders (490) on the straight needle tip and the plum blossom needle tip slide in the grooves (460) respectively.

9. A multifunctional bloodletting needle according to claim 8, characterized in that, The second drive mechanism (500) includes a second spring (520), a limiting plate (510), a transmission rod (550), a positioning rod (530), and a transmission plate (540). The limiting plate (510) is fixedly connected to the inner wall of the second receiving cavity (120), and one end of the positioning rod (530) is fixedly connected to the surface of the limiting plate (510), and the other end is fixedly connected to the bottom surface of the second receiving cavity (120); The transmission plate (540) is slidably disposed on the positioning rod (530), one end of the second spring (520) abuts against the transmission plate (540), and the other end of the second spring (520) abuts against the limiting plate (510); One end of the transmission rod (550) is fixedly connected to the transmission plate (540), and the other end extends toward the positioning sleeve (410) to push the single-point fixing seat (440) or the linear fixing seat (450) out.

10. A multifunctional bloodletting needle according to claim 9, characterized in that, The second drive mechanism (500) further includes a second toggle block (570) and a third toggle block (590); The needle tube (100) has two openings on its sidewalls, a second through groove (560) and a third through groove (580) communicating with the second receiving cavity (120). The second actuating block (570) is slidably disposed in the second through groove (560) and fixedly connected to the single-point fixing seat (440). The third actuating block (590) is slidably disposed in the third through groove (580) and fixedly connected to the linear fixing seat (450).

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