Needle assisting assembly

Abstract

The utility model discloses a needle assisting component, which comprises a needle assisting device and a needle assisting needle head coaxially installed, the needle assisting needle head is used for connecting an indwelling component, the needle assisting device is composed of a base, a main body shell, a support, a needle assisting key and a needle releasing key, the main body shell is connected with the base to form a containing space, and the support is partially located in the containing space. The support is arranged on the main body shell, the needle-assisting needle head is fixed at the bottom end of the support and can move up and down, the needle-assisting key is arranged outside the support, the support is arranged in the main body shell, the support is controlled to drive the needle-assisting needle head to move up and down, and the needle-releasing key is installed in the support. Through the whole needle assisting assembly, the indwelling soft needle and the monitoring probe can be rapidly, stably and accurately implanted under the skin without pain, meanwhile, the needle is very convenient to remove, operation is easy and safe, in addition, the needle assisting needle head is installed and detached under the protection condition, environment friendliness and safety are achieved, secondary damage to a patient is avoided, and the use experience of the patient is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a needle-assist component. Background Art

[0002] For diabetic patients, insulin therapy has become the key to preventing high and low blood sugar. Therefore, diabetic patients need to monitor their blood sugar in real time and inject insulin regularly and in fixed amounts.

[0003] Currently, the artificial in vitro pancreas is the first time that a mechanical method has been used to replace the function of an endocrine gland. It can continuously monitor the blood glucose level of diabetic patients and provide corresponding doses of insulin to help insulin-induced diabetes return to normal levels and avoid physical damage or even life-threatening situations caused by excessively high or low blood sugar.

[0004] Generally, an artificial extracorporeal pancreas includes a base plate, an indwelling component, and other devices. The base plate is attached to the patient's skin surface, and the indwelling component is fixed to the base plate. At the same time, the indwelling soft needle and the monitoring probe are implanted subcutaneously. Therefore, to facilitate this implantation operation, the artificial extracorporeal pancreas also includes a needle-assist component. With the assistance of the needle-assist component, the indwelling soft needle and the monitoring probe can be punctured under the patient's skin. Then, the needle-assist component is quickly withdrawn from the patient's skin, while the indwelling soft needle and the monitoring probe remain subcutaneously to monitor blood glucose in real time and inject insulin at regular intervals.

[0005] However, although some needle-assisted implantation devices exist in the existing technology, their structures are relatively complex, the process of use is cumbersome, the reliability is low, and there are certain safety hazards, which increases the psychological burden on patients. Moreover, disposable needle-assisted devices cause medical waste, pollute the environment, and bring certain economic pressure to patients. Furthermore, changing needles is troublesome, and safety issues still exist, which can easily cause secondary harm to patients. Therefore, it is necessary to provide a new needle-assisted component. Utility Model Content

[0006] To address the aforementioned problems, this invention provides a needle-assist component that effectively overcomes the shortcomings of existing technologies.

[0007] This utility model is achieved through the following technical solution: a needle-assisting component, comprising:

[0008] Needle aid;

[0009] The needle assisting tip has one end coaxially mounted on the needle assisting device and connected to the needle assisting device by a complementary hook-type engagement, and the other end is used to connect to the indwelling component.

[0010] The protective sleeve can be detachably installed on the outside of the needle tip;

[0011] The needle assist device includes a base, a main shell, a bracket, a needle assist key, and a needle removal key. The bottom surface of the base is a contact surface for fitting with a base plate. The main shell is connected to the base to form a receiving space. At least a portion of the bracket is located within the receiving space, with its bottom end located inside the base and moving along the base, and its top end protruding through the top opening of the main shell. The bracket and the main shell are connected by a complementary hook-type engagement. The bottom end of the bracket is connected to the needle assist head. By moving the bracket up and down, the needle assist head can be moved up and down to achieve resetting or needle assist.

[0012] The needle assist button is sleeved on the outside of the bracket and disposed on the inside of the main body shell. A first elastic element is disposed between the needle assist button and the bottom end of the bracket. When the needle assist button is pressed, under the elastic action of the first elastic element, the bracket drives the needle assist tip to move from the initial position to the needle assist position, thereby realizing the downward movement of the needle assist. The needle assist button and the main body shell are connected by a complementary hook-type engagement. A second elastic element is disposed between the needle assist button and the main body shell, and the pressed needle assist button is reset by the second elastic element.

[0013] The needle release button is installed inside the bracket. When the needle release button is pressed, the bottom of the needle release button pushes out the auxiliary needle head. The needle release button and the bracket are connected by a complementary hook type. A third elastic element is provided between the needle release button and the bracket. The pressed needle release button is reset by the third elastic element.

[0014] As a preferred technical solution, the top of the needle tip is provided with a first hook, and the bracket is provided with a second hook corresponding to the position of the first hook. The needle tip and the bracket are connected by the complementary hook-shaped cooperation between the first hook and the second hook.

[0015] As a preferred technical solution, the top of the auxiliary needle is provided with a mounting groove that is fitted to the bracket. The inner wall of the mounting groove has at least one horizontal surface and at least one arcuate surface, and the auxiliary needle is located in the mounting groove.

[0016] As a preferred technical solution, the base is provided with a plurality of bolt holes; the main body shell and the base are connected by bolts through the plurality of bolt holes.

[0017] As a preferred technical solution, multiple guide protrusions are formed on the inner sidewall of the base, and a protrusion groove is provided at the bottom end of the bracket corresponding to the position of each guide protrusion. The guide protrusions are slidably engaged into the protrusion grooves so that the bottom end of the bracket moves along the base. The outer sidewall of the top end of the bracket has at least one horizontal surface and at least one arcuate surface.

[0018] As a preferred technical solution, the bracket is provided with a third hook, and the main body shell is provided with a fourth hook at the position corresponding to the third hook. The bracket is connected by the complementary hook type of the third hook and the fourth hook of the main body shell.

[0019] When the needle assist button is pressed, the third latch and the fourth latch are unlocked.

[0020] As a preferred technical solution, the needle assist key is provided with a fifth hook, and the main body shell is provided with a sixth hook at the position corresponding to the fifth hook. The needle assist key is connected by the complementary hook type of the fifth hook and the sixth hook of the main body shell.

[0021] When the needle assist button is pressed, the fifth hook and the sixth hook are unlocked. When the needle assist button is released, the needle assist button is reset by the second elastic element, and the fifth hook and the sixth hook are re-locked.

[0022] As a preferred technical solution, the needle release key is provided with a seventh hook, and the bracket is provided with an eighth hook at the position corresponding to the seventh hook. The needle release key is connected by the complementary hook type of the seventh hook and the eighth hook of the bracket.

[0023] When the needle release button is pressed, the seventh hook and the eighth hook are unlocked. When the needle release button is released, the needle release button is reset by the third elastic element, and the seventh hook and the eighth hook are re-locked.

[0024] As a preferred technical solution, the outer wall of the ejector key has at least one horizontal surface and at least one arcuate surface.

[0025] As a preferred technical solution, a guide sliding structure is provided between the needle assist key and the main body shell for guiding the movement of the needle assist key, and the inner sidewall of the needle assist key has at least one horizontal surface and at least one arc-shaped surface.

[0026] The beneficial effects of this utility model are: This utility model can realize the rapid, stable and painless accurate implantation of indwelling soft needles and monitoring probes into the subcutaneous tissue. The equipment has high reliability, accurately monitors blood glucose and injects insulin, and is also very convenient to remove the needle. The operation is very simple and safe, avoiding harm to patients caused by misoperation and improving the patient's user experience.

[0027] The disposable needles in the needle-assisting assembly are easy to replace, while the needle-assisting device is reusable for a long time, saving medical resources, reducing environmental pollution, lowering usage costs, and alleviating the economic burden on patients. Furthermore, the needles are installed and removed under protective conditions, making it very environmentally friendly and safe, without causing secondary harm to patients. The concealed needles also avoid causing patients fear. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the needle-assisted assembly;

[0030] Figure 2 yes Figure 1 Exploded view of the central needle assembly;

[0031] Figure 3 yes Figure 1 First cross-sectional view of the central needle assembly;

[0032] Figure 4 yes Figure 1 Second sectional view of the central needle assembly;

[0033] Figure 5 yes Figure 1 A schematic diagram of the base of the central needle assembly;

[0034] Figure 6 yes Figure 1 A schematic diagram of the main shell of the central needle assembly;

[0035] Figure 7 yes Figure 6 A bottom view of the main body shell;

[0036] Figure 8 yes Figure 1 A schematic diagram of the support structure of the central needle assembly;

[0037] Figure 9 yes Figure 8 Bottom view of the middle support;

[0038] Figure 10 yes Figure 1 A schematic diagram of the needle-assist key in the needle-assist component;

[0039] Figure 11 yes Figure 1A schematic diagram of the needle release key in the needle-assist component;

[0040] Figure 12 yes Figure 1 A schematic diagram of the structure of the needle tip in the needle-assist component;

[0041] Figure 13 yes Figure 1 A schematic diagram of the central needle assist component in the needle assist state;

[0042] Figure 14 yes Figure 13 First cross-sectional view of the central needle assembly;

[0043] Figure 15 yes Figure 13 Second sectional view of the central needle assembly;

[0044] Figure 16 yes Figure 1 A schematic diagram of the central needle-assist component in the needle-disengagement state;

[0045] Figure 17 yes Figure 16 First cross-sectional view of the central needle assembly;

[0046] Figure 18 yes Figure 16 Second sectional view of the central needle assembly;

[0047] Explanation of reference numerals in the attached figures:

[0048] 100. Needle aid; 200. Needle aid needle; 210. First hook; 220. Mounting slot; 300. Protective cover; 10. Base; 20. Main body shell; 30. Bracket; 40. Needle aid key; 50. Needle removal key; 60. First spring; 70. Second spring; 80. Third spring; 110. Second hook; 11. Guide protrusion; 12. Bolt hole post; 31. Third hook; 21. Fourth hook; 41. Fifth hook; 22. Sixth hook; 51. Seventh hook; 32. Eighth hook. DETAILED DESCRIPTION

[0049] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0050] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0051] like Figures 1-18As shown, a needle-aiding component of this utility model includes a needle-aiding device 100;

[0052] It also includes an auxiliary needle 200, one end of which is coaxially mounted on the auxiliary needle device 100 and connected to the auxiliary needle device 100 by a complementary hook-type engagement. The other end is used to connect to the indwelling component. The auxiliary needle 200 and the auxiliary needle device 100 are detachable and can be disassembled after use. The auxiliary needle 200 can be removed separately and replaced with a new auxiliary needle 200 for reuse, avoiding contamination caused by secondary use. The auxiliary needle device 100 can be reused, reducing medical waste and lowering treatment costs.

[0053] Specifically, the complementary hook type between the needle assist 200 and the needle assist device 100 includes a first hook 210 set on the top of the needle assist 200 and a second hook 110 set at the corresponding position on the bracket 30. The first hook 210 and the second hook 110 are hooked together, and the first hook 210 and the second hook 110 can be separated or hooked together to complete locking and unlocking.

[0054] A notched area is formed at the insertion end of the auxiliary needle 200. These notched areas can provide a certain tension to facilitate the installation and removal of the auxiliary needle 200.

[0055] To enhance the safety of the acupuncture needle 200 and prevent injury to the user, in this embodiment, a protective sleeve 300 is installed on the outside of the acupuncture needle 200. The protective sleeve 300 can be detachably installed on the outside of the acupuncture needle 200 and can also be a disposable item. The protective sleeve 300 and the acupuncture needle 200 can be connected by snap-fit, making it easy to install and remove. The protective sleeve 300 can prevent contamination of the needle body at the bottom of the acupuncture needle 200 and also prevent puncture wounds to the human body, ensuring safety and preventing secondary injuries.

[0056] The needle assist device 100 includes a base 10, a main body shell 20, a bracket 30, a needle assist button 40, and a needle removal button 50. The bottom surface of the base 10 is a contact and bonding surface. During needle assist, the contact and bonding surface is bonded to the base plate. The main body shell 20 is connected to the base 10 to form a receiving space.

[0057] At least part of the structure of the bracket 30 is located within the receiving space. Its bottom end is located inside the base 10 and moves along the base 10. Its top end protrudes from the top opening of the main body shell 20. The bracket 30 and the main body shell 20 are connected by a complementary hook-type engagement. The bottom end of the bracket 30 is connected to and fixes the auxiliary needle 200. By moving the bracket 30 up and down, the auxiliary needle 200 is driven to move up and down to achieve resetting or needle assistance. When needle assistance is needed, the bracket 30 and the auxiliary needle 200 move downward to assist needle, and then the bracket 30 and the auxiliary needle 200 move upward to reset. This is repeated to achieve multiple needle assistance functions.

[0058] Specifically, the needle-assist button 40 is sleeved on the outside of the bracket 30 and located on the inside of the main body shell 20, such as... Figure 3 As shown, a first elastic element is provided between the bottom end of the needle assist button 40 and the support 30. This first elastic element can be a first spring 60. Specifically, the first spring 60 is installed in the bottom space of the needle assist button 40. When the complementary configuration between the needle assist button 40 and the main body shell 20 is locked, the first spring 60 is in a compressed state and cannot push the support 30 downward. When the needle assist button 40 is pressed, under the elastic action of the first spring 60, the support 30 is pushed out after the elastic potential energy is released by the first spring 60. Therefore, the support 30 drives the needle assist tip 200 to move from the initial position to the needle assist position, thereby realizing the downward movement of the needle assist.

[0059] To ensure that the needle assist button 40 returns to its original position after being pressed down, ready for the next press, in this embodiment, the needle assist button 40 and the main body shell 20 are connected by a complementary hook-type engagement. When not in use, the needle assist button 40 and the main body shell 20 are connected by the complementary hook-type engagement. When the needle assist button 40 is pressed down, the needle assist button 40 is separated from the main body shell 20. To achieve the reset of the needle assist button 40, in this embodiment, a second elastic element is provided between the needle assist button 40 and the main body shell 20. The pressed needle assist button 40 is reset by the second elastic element. Specifically, in this embodiment, the second elastic element is a second spring 70. When not in use, the complementary hook type is locked, and the second spring 70 is in the normal state. Once the needle assist button 40 is pressed down, the second spring 70 will be compressed, generating elastic potential energy. Once the needle assist button 40 is released, the needle assist button 40 can be reset by the second spring 70, and the complementary hook type structure can be locked.

[0060] Among them, such as Figure 3 and Figure 4 As shown, the needle release button 50 is installed inside the bracket 30. When the needle release button 50 is pressed, the bottom of the needle release button 50 pushes out the auxiliary needle head 200. At this time, the auxiliary needle head 200 can be manually removed from the bottom of the bracket 30 and replaced, which is convenient. In this embodiment, the needle release button 50 and the bracket 30 are also connected by a complementary hook type. A third elastic element is provided between the needle release button 50 and the bracket 30. The needle release button 50 is reset by the third elastic element. Specifically, the third elastic element can also be a third spring 80. The needle release component is reset by the third spring 80. The bottom of the needle release button 50 is hollowed out to form an installation space for the third spring 80. Please refer to [link to relevant documentation]. Figure 3 The bottom of the third spring 80 contacts the top of the bracket 30 for support.

[0061] like Figure 12As shown, the top of the auxiliary needle 200 has a mounting groove 220 that is fitted to the bracket 30. The inner wall of the mounting groove 220 has at least one horizontal surface and at least one arc-shaped surface. The auxiliary needle 200 is located in the mounting groove 220, and the circumferential rotation of the auxiliary needle 200 is restricted by the horizontal surface. Since the horizontal surface is set, its circumference can be restricted.

[0062] In this embodiment, as Figure 5 and Figure 6 As shown, the base 10 is provided with multiple bolt hole columns 12; the main body shell 20 and the base 10 are connected by multiple bolt hole columns 12, and a certain space is formed inside the two.

[0063] like Figure 5 As shown, multiple guide protrusions 11 are formed on the inner sidewall of the base 10. The bottom end of the bracket 30 is provided with a protrusion groove corresponding to the position of each guide protrusion 11. The guide protrusion 11 slides into the protrusion groove so that the bottom end of the bracket 30 moves along the base 10. The outer sidewall of the top end of the bracket 30 has at least one horizontal surface and at least one arc-shaped surface. The purpose of setting the horizontal surface is the same as above, which is to limit the rotation in the circumferential direction. Here, it is used to prevent the circumferential rotation between the bracket 30 and the base 10.

[0064] Please continue reading. Figure 3 The complementary hook structure between the bracket 30 and the main shell 20 is as follows: a third hook 31 is provided on the bracket 30, and a fourth hook 21 is provided on the main shell 20 at the position corresponding to the third hook 31. The bracket 30 is connected by the complementary hook type of the third hook 31 and the fourth hook 21 of the main shell 20.

[0065] The specific steps are as follows:

[0066] When the assist needle button 40 is pressed, the third hook 31 and the fourth hook 21 are unlocked. Under the elastic action of the first spring 60, the bracket 30 and the assist needle 200 move downward to assist the needle. Then the bracket 30 and the assist needle 200 can be manually moved upward to reset, so that the third hook 31 and the fourth hook 21 are locked again, ready for the next assist needle.

[0067] In this embodiment, the complementary hook shape between the needle-assist component and the main body shell 20 is as follows:

[0068] A fifth hook 41 is provided on the needle assist key 40, and a sixth hook 22 is provided on the main body shell 20 at the position corresponding to the fifth hook 41. The needle assist key 40 is connected by the complementary hook type of the fifth hook 41 and the sixth hook 22 of the main body shell 20. The notch around the main body shell 20 can provide a certain tension to facilitate the release of the needle assist key 40.

[0069] When the needle assist button 40 is pressed, the fifth hook 41 and the sixth hook 22 are unlocked. When the needle assist button 40 is released, the needle assist button 40 is reset by the second elastic element, and the fifth hook 41 and the sixth hook 22 are re-locked.

[0070] like Figure 3 As shown, a seventh hook 51 is provided on the needle release key 50, and an eighth hook 32 is provided on the bracket 30 at the position corresponding to the seventh hook 51. The needle release key 50 is connected by the complementary hook type of the seventh hook 51 and the eighth hook 32 of the bracket 30.

[0071] When the needle release button 50 is pressed, the seventh hook 51 and the eighth hook 32 are unlocked. When the needle release button 50 is released, the needle release button 50 is reset by the third elastic element, and the seventh hook 51 and the eighth hook 32 are re-locked.

[0072] The outer wall of the needle release key 50 has at least one horizontal surface and at least one arcuate surface. In this embodiment, the outer wall of the needle release key 50 has one horizontal surface and one arcuate surface. Of course, it can also be set to two horizontal surfaces, which will form multiple arcuate surfaces.

[0073] The needle-assist key 40 is provided with a guide sliding structure between itself and the main body shell 20 for guiding the movement of the needle-assist key 40. The inner sidewall of the needle-assist key 40 has at least one horizontal surface and at least one arc-shaped surface. In this embodiment, the outer sidewall of the needle-removing key 50 has one horizontal surface and one arc-shaped surface. Of course, it can also be set to two horizontal surfaces, which will form multiple arc-shaped surfaces. The positioning and guidance are achieved by the mutually matching guide blocks and guide grooves, and the circumferential rotation of the needle-assist key 40 is restricted by the two horizontal surfaces and two arc-shaped surfaces of the inner sidewall of the needle-assist key 40.

[0074] The working principle is as follows: In the initial state, the third hook 31 and the fourth hook 21 are locked, and the first spring 60 is in a compressed state. When assisting the needle, pressing the needle assist button 40 causes the support 30 to move, unlocking the third hook 31 and the fourth hook 21. The first spring 60 tends to return to its original state, simultaneously moving the support 30 and the needle assist head 200 downwards. Since the second spring 70 is compressed when the needle assist button 40 is pressed, it tends to return to its original state. Therefore, releasing the needle assist button 40 causes it to reset. After the needle assist is completed, the support 30 and the needle assist head can be manually moved. 200 moves upward to reset, so that the third hook 31 and the fourth hook 21 re-lock; when loading the needle, the auxiliary needle 200 can be manually inserted directly into the bottom end of the bracket 30 until the first hook 210 and the second hook 110 lock; when unloading the needle, press the needle release button 50, the auxiliary needle 200 moves, the first hook 210 and the second hook 110 are unlocked, and the auxiliary needle 200 can be manually removed from the bottom end of the bracket 30. Since the third spring 80 is compressed when the needle release button 50 is pressed, the third spring 80 has a tendency to return to its original state, so when the needle release button 50 is released, it drives the needle release button 50 to reset.

[0075] The usage method is as follows: 1. Install the auxiliary needle 200. Manually insert the auxiliary needle 200, which is covered with the protective sleeve 300, into the bottom end of the bracket 30. At this time, the first hook 210 and the second hook 110 are locked together, and the assembled auxiliary needle assembly is obtained. Then remove the protective sleeve 300 to expose the needle body at the bottom end. 2. Perform the auxiliary needle operation. Connect the auxiliary needle assembly to the indwelling assembly. The bottom surface of the base 10 and the base plate are in contact. Press the auxiliary needle button 40. Since the third hook 31 and the fourth hook 21 are unlocked, the first spring 60 returns to its original state, which drives the bracket 30 and the auxiliary needle 200 to move downwards, so that the indwelling soft needle and the monitoring probe are implanted under the skin of the human body until the lowest implantation position. At this time, the indwelling assembly is fixed on the base plate. After the pressure is released, the auxiliary needle button 40 returns to its original position and locks under the elastic action of the second spring 70. Then, the auxiliary needle assembly is... 3. Quickly remove the entire needle from the skin and separate it from the base plate; 4. Remove the auxiliary needle 200, put the protective sleeve 300 back on the auxiliary needle 200, press the needle release button 50 to push out the auxiliary needle 200. Since the first hook 210 and the second hook 110 are unlocked, manually remove the auxiliary needle 200 with the protective sleeve 300 from the bottom of the bracket 30. After the pressure is released, the needle release button 50 returns to its original position and locks under the elastic action of the third spring 80. Discard the auxiliary needle 200 and the protective sleeve 300. Replace the auxiliary needle 200 and the protective sleeve 300 when needed. Repeat the above process to achieve multiple uses of the auxiliary needle. The bracket 30 and the auxiliary needle 200 can be manually moved upward to return to their original positions until the third hook 31 and the fourth hook 21 lock. At this time, the bracket 30 returns to its original position for the next auxiliary needle operation.

[0076] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A needle-assisting assembly, characterized in that: include: Needle assist device (100); An auxiliary needle (200), one end of which is coaxially mounted on the auxiliary needle device (100) and connected to the auxiliary needle device (100) by a complementary hook-type fit, and the other end of which is used to connect to a retention component; A protective sleeve (300) which can be detachably mounted on the outside of the auxiliary needle (200); The needle-assisting device (100) comprises a base (10), a main body shell (20), a bracket (30), a needle-assisting key (40) and a needle-removing key (50); the bottom surface of the base (10) is a contact and fitting surface for fitting with a bottom plate; the main body shell (20) is connected to the base (10) to form a accommodating space; at least part of the structure of the bracket (30) is located in the accommodating space; the bottom end of the bracket (30) is located in the base (10) and moves along the base (10); the top end of the bracket (30) passes through the top opening of the main body shell (20); the bracket (30) and the main body shell (20) are connected by complementary hook-type fitting; the bottom end of the bracket (30) is connected to the needle-assisting needle (200), and the bracket (30) moves up and down to drive the needle-assisting needle (200) to move up and down, thereby achieving resetting or needle-assisting; The needle-assisting key (40) is sleeved on the outside of the bracket (30) and is arranged on the inner side of the main body shell (20). A first elastic member is arranged between the needle-assisting key (40) and the bottom end of the bracket (30). When the needle-assisting key (40) is pressed, under the elastic action of the first elastic member, the bracket (30) drives the needle-assisting needle (200) to move from the initial position to the needle-assisting position, so as to move the needle-assisting needle downward. The needle-assisting key (40) and the main body shell (20) are connected by complementary hook-type fitting. A second elastic member is arranged between the needle-assisting key (40) and the main body shell (20), and the pressed needle-assisting key (40) is reset by the second elastic member. The needle-removing key (50) is installed inside the bracket (30). When the needle-removing key (50) is pressed, the bottom of the needle-removing key (50) pushes out the auxiliary needle head (200). The needle-removing key (50) and the bracket (30) are connected by complementary hook-type matching. A third elastic member is arranged between the needle-removing key (50) and the bracket (30), and the pressed needle-removing key (50) is reset by the third elastic member.

2. The needle assist assembly according to claim 1, characterized in that: The top of the auxiliary needle (200) is provided with a first hook (210), and the bracket (30) is provided with a second hook (110) at a position corresponding to the first hook (210), and the auxiliary needle (200) and the bracket (30) are connected by complementary hook-type cooperation between the first hook (210) and the second hook (110).

3. The needle assisting assembly according to claim 2, characterized in that: The top of the auxiliary needle head (200) is provided with a mounting groove (220) for assembly with the bracket (30); the inner groove wall of the mounting groove (220) has at least one horizontal surface and at least one arcuate surface; the auxiliary needle head (200) is located in the mounting groove (220).

4. The needle assisting assembly according to claim 1, characterized in that: The base (10) is provided with a plurality of bolt hole columns (12); the main body shell (20) and the base (10) are bolted together via the plurality of bolt hole columns (12).

5. The needle assisting assembly according to claim 4, characterized in that: A plurality of guide ridges (11) are formed on the inner side wall of the base (10), and a ridge groove is provided at the bottom end of the bracket (30) corresponding to the position of each guide ridge (11), and the guide ridge (11) is slidably buckled into the ridge groove so that the bottom end of the bracket (30) moves along the base (10), and the outer side wall of the top end of the bracket (30) has at least one horizontal surface and at least one arcuate surface.

6. The needle assisting assembly according to claim 1, characterized in that: The bracket (30) is provided with a third hook (31), and a fourth hook (21) is provided on the main housing (20) at a position corresponding to the third hook (31), and the bracket (30) is connected to the fourth hook (21) of the main housing (20) by means of the third hook (31) in a complementary hook-type fit; When the needle assisting key (40) is pressed, the third hook (31) and the fourth hook (21) are unlocked.

7. The needle assisting assembly according to claim 6, characterized in that: The needle-assisting key (40) is provided with a fifth hook (41), and a sixth hook (22) is provided on the main shell (20) at a position corresponding to the fifth hook (41), and the needle-assisting key (40) is connected to the sixth hook (22) of the main shell (20) by means of the fifth hook (41) in a complementary hook-type cooperation; When the needle-assisting key (40) is pressed, the fifth hook (41) and the sixth hook (22) are unlocked; when the needle-assisting key (40) is released, the needle-assisting key (40) is reset by the second elastic member, and the fifth hook (41) and the sixth hook (22) are re-locked.

8. The needle assist assembly according to claim 1, characterized in that: The needle-removing key (50) is provided with a seventh hook (51), and the bracket (30) is provided with an eighth hook (32) at a position corresponding to the seventh hook (51), and the needle-removing key (50) is connected with the eighth hook (32) of the bracket (30) by means of the seventh hook (51) in a complementary hook-type cooperation; When the needle-releasing key (50) is pressed, the seventh hook (51) and the eighth hook (32) are unlocked; when the needle-releasing key (50) is released, the needle-releasing key (50) is reset by the third elastic member, and the seventh hook (51) and the eighth hook (32) are re-locked.

9. The needle assisting assembly according to claim 1 or 8, characterized in that: The outer side wall of the needle-removing key (50) has at least one horizontal surface and at least one arcuate surface.

10. The needle assisting assembly according to claim 1, 6 or 7, characterized in that: A guide sliding structure is provided between the auxiliary needle key (40) and the main body shell (20) for guiding the movement of the auxiliary needle key (40), and the inner side wall of the auxiliary needle key (40) has at least one horizontal surface and at least one arc surface.

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