Automatic needle assisting device

Abstract

The application discloses an automatic needle assisting device, which comprises a ratchet wheel (10), a push rod (20), a guide tube (30), a force accumulator (40), a slide rail (50), a first sliding block (60), a second sliding block (70) and a sliding block baffle (80). When the automatic needle assisting device is in an initial state, the first sliding block and the second sliding block are located adjacently at the rear end of the slide rail, and the force accumulator exerts force on the second sliding block. The ratchet wheel presses the push rod, so that the push rod exerts force on the front end of the middle elastic sheet (54) of the slide rail and lifts the middle elastic sheet to block the forward sliding of the first sliding block. Thus, the force accumulator is in a force storage state. When injection is performed, the ratchet wheel rotates by a certain angle, so that the ratchet wheel does not press the push rod. Thus, the middle elastic sheet rebounds downward, so that the slide rail no longer blocks the forward sliding of the first sliding block. The force stored by the force accumulator drives the first sliding block and the second sliding block to move forward together, and drives the guide tube and a needle (1) for injection to move forward and realize needle assisting penetration.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and specifically relates to an automatic needle-assist device. Background Technology

[0002] Diabetes is caused by insufficient insulin secretion from the pancreas, and most cases are currently incurable, requiring insulin injections to maintain stable blood sugar levels. An insulin pump, as an external device, can replace the pancreas in delivering insulin to the body at regular intervals and in precise quantities to control diabetes. However, current insulin pump technology often uses manual or semi-automatic insertion methods, requiring the patient to manually trigger the insertion switch before the pump's built-in insertion device can insert the needle into the patient's skin.

[0003] Manual insertion requires assistance from others and is inconvenient to operate. Currently, semi-automatic needle insertion methods on the market also have the following drawbacks: manual triggering, complex operation, and high learning curve; accidental operation can damage the equipment or even injure the operator; the needle insertion aid is separate from the pump and is bulky, making it inconvenient for daily carrying; and the drug reservoir tubing is prone to clogging, etc.

[0004] Therefore, new technologies and equipment are needed to address the shortcomings of existing technologies. Summary of the Invention

[0005] To address the above issues, this invention integrates the needle-assist device into the pump body, improving patient comfort, reducing operational difficulty, and mitigating the risks associated with tubing blockage and misoperation.

[0006] According to one aspect of the present invention, an automatic needle assist device is provided, characterized in that it comprises: a ratchet (10), a lever (20), a guide tube (30), a power storage element (40), a slide rail (50), a first slider (60), a second slider (70), and a slider baffle (80);

[0007] The lever (20) is located below the slide rail (50) and includes a main rod (21), a front pressure rod (22), a side boss (23), and a stop (24). The front pressure rod (22) is fixed to the front end of the main rod (21) and is perpendicular to the main rod (21). The side boss (23) protrudes from the surface of the main rod (21) and extends along the main rod. The stop (24) is formed on the side boss (23). There is a certain angle between the plane where the front pressure rod (22) and the main rod (21) are located and the plane where the side boss (23) and the main rod (21) are located. The stop (24) is basically perpendicular to the plane where the side boss (23) and the main rod (21) are located.

[0008] The slide rail (50) includes a front baffle (51), a rear baffle (52), two horizontal slide plates (53), and a central spring plate (54). The two horizontal slide plates (53) extend parallel from the upper end of the front baffle (51) to the upper end of the rear baffle (52) and are spaced apart by a certain distance. The central spring plate (54) extends from the middle of the rear baffle toward the front baffle, and from a vertical angle, the central spring plate is located in the gap between the two horizontal slide plates (53). The front end of the central spring plate (54) also forms a bent boss (541).

[0009] The first slider (60) and the second slider (70) are mounted on the slide rail (50) and can slide back and forth along the two horizontal slide plates (53); the conduit (30) is mounted on the first slider (60), the injection needle (1) is mounted on the second slider (70) and a part of the injection needle is inserted into the conduit (30); the accumulator (40) is fixed to the rear end of the slide rail (50) and is used to apply force to the second slider (70); the slider baffle (80) is mounted on the horizontal slide plate (53) and is used to prevent the first slider (60) from sliding backward.

[0010] In the initial state of the automatic needle assist device, the first slider (60) and the second slider (70) are located adjacent to each other at the rear end of the horizontal slide plate (53). The force storage member (40) applies force to the second slider (70). The arc surface (11) of the front boss of the ratchet (10) presses against the front pressure rod (22) of the lever (20), so that the side boss (23) applies force to the front end of the middle spring (54) and lifts it. After being lifted, the front end of the first slider (60) abuts against the bent boss (541). The force storage member (40) applies a forward force to the second slider (70) and transmits it to the first slider (60). The bent boss (541) blocks the first slider (60) from sliding forward, so the force storage member (40) is in the power storage state.

[0011] When the injection is performed, the ratchet (10) rotates at a certain angle, so that the arc surface (11) of the front boss of the ratchet (10) does not press against the front pressure rod (22). As a result, the middle spring (54) rebounds downward and reacts to the side boss (23), causing the lever (20) to rotate at a certain angle. At the same time, the bending boss (541) no longer blocks the first slider (60) from sliding forward. The force stored in the power storage device (40) pushes the first slider (60) and the second slider (70) to move forward together, respectively driving the catheter (30) and the injection needle (1) to move forward and realize the needle insertion.

[0012] According to an embodiment of the present invention, when the first slider (60) moves forward to the top along the horizontal slide plate (53), the accumulator (40) applies a backward force to the second slider (70) and drives the second slider (70) to move backward. At the same time, the slider baffle (80) blocks the first slider (60) from moving backward, thereby the second slider (70) drives the injection needle (1) back to the initial state while the catheter (30) remains in the inserted state.

[0013] According to an embodiment of the present invention, the slide rail (50) further includes a rear mounting plate (55) and a torsion spring mounting post (56), the rear mounting plate (55) being connected to the lower end of the rear baffle (52) and extending horizontally, and having the torsion spring mounting post (56) formed thereon.

[0014] According to an embodiment of the present invention, the energy storage component (40) includes a torsion spring (41), a first rotating arm (42), and a second rotating arm (43). The torsion spring (41) is fixed on the torsion spring mounting post (56). One end of the second rotating arm (43) is fixed on the torsion spring (41), and the other end is movably connected to one end of the first rotating arm (42). The other end of the first rotating arm (42) is connected to the second slider (70). The torsion spring (41) rotates around the axis of the torsion spring mounting post (56) and applies force to the second slider (70) through the first rotating arm (42) and the second rotating arm (43).

[0015] According to an embodiment of the present invention, the first slider (60) is formed with a baffle contact slope (61), a baffle limiting groove (62), a conduit mounting position (63), and first sliding wings (64) on both sides; an inclined plate (82) is formed on the arm (81) of the slider baffle (80); during the forward movement of the first slider (60), the baffle contact slope (61) cooperates with the inclined plate (82) so that the first slider (60) slides past the slider baffle (80), and the baffle limiting groove (62) cooperates with the arm (81) to restrict the first slider (60) from moving backward.

[0016] According to an embodiment of the present invention, the second slider (70) is formed with a first rotating arm connecting groove (71), an injection needle corner mounting position (72) and second sliding wings (73) on both sides. The first rotating arm connecting groove (71) is movably connected to the first rotating arm (42), and the injection needle (1) is installed in the injection needle corner mounting position (72).

[0017] According to an embodiment of the present invention, the stop (24) is formed with an inclined upper surface (241); after the lever (20) is rotated at a certain angle, the inclined upper surface (241) faces upward, and when the first slider (60) moves forward to the top, the lower surface of the first slider (60) contacts the upper surface of the stop (24), and the lower surface of the second slider (70) contacts the top of the bent boss (541).

[0018] According to an embodiment of the present invention, the first rotating arm (42) is formed with a slider connecting rod (421) and a rotating arm connecting hole (422), the second rotating arm (43) is formed with a rotating arm connecting rod (431) and a rotating arm connecting protrusion (432), the slider connecting rod (421) is connected to the first rotating arm connecting groove (71), the rotating arm connecting hole (422) is connected to the rotating arm connecting protrusion (432), and the rotating arm connecting rod (431) is connected to the rotating arm riveting position (561) of the torsion spring mounting post (56).

[0019] According to an embodiment of the invention, each of the two horizontal sliding plates (53) has a side baffle (531) formed on its outer side.

[0020] According to another aspect of the present invention, an insulin injection pump is also provided, including the automatic needle assist device according to the present invention.

[0021] Compared with the prior art, the present invention has at least the following advantages:

[0022] a. Automated needle assist is highly efficient and requires no learning curve;

[0023] b. No additional needle-aiding devices are required, making it easy to carry;

[0024] c. No internal piping, reducing the risk of blockage;

[0025] d. Automatic and rapid insertion into the patient's body reduces the patient's fear of holding the needle and the pain caused by improper force. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of an automatic needle-aiding device according to an embodiment of the present invention;

[0027] Figure 2 This is a three-dimensional structural diagram of the slide rail of the automatic needle-aiding device according to an embodiment of the present invention;

[0028] Figure 3 This is a top view schematic diagram of the slide rail of the automatic needle-aiding device according to an embodiment of the present invention;

[0029] Figure 4 A perspective view of the lever of the automatic needle-aiding device according to an embodiment of the present invention;

[0030] Figure 5 A three-dimensional structural schematic diagram of the first slider of the automatic needle-aiding device according to an embodiment of the present invention;

[0031] Figure 6 This is a three-dimensional structural diagram of the second slider of the automatic needle-aiding device according to an embodiment of the present invention;

[0032] Figure 7This is a three-dimensional structural diagram of the first rotating arm of the automatic needle-aiding device according to an embodiment of the present invention;

[0033] Figure 8 This is a three-dimensional structural diagram of the second rotating arm of the automatic needle-aiding device according to an embodiment of the present invention;

[0034] Figure 9 This is a three-dimensional structural diagram of the ratchet of the automatic needle-aiding device according to an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the structure of the automatic needle-aiding device in its initial state during use according to an embodiment of the present invention;

[0036] Figure 11a and 11b This is a three-dimensional and top view structural diagram of the automatic needle assist device according to an embodiment of the present invention in the needle assist state during use;

[0037] Figure 12a This is a top view of the automatic needle assist device according to an embodiment of the present invention in the needle retraction state during use;

[0038] Figure 12b This is a three-dimensional structural diagram of the automatic needle assist device according to an embodiment of the present invention in the needle retraction state during use, wherein the catheter, injection needle and slider baffle are not shown, and only a part of the side baffle is shown. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Regarding orientation, in the present invention, the direction of movement of the first slider (60) is considered forward.

[0040] Figure 1 This is a three-dimensional structural diagram of an automatic needle-assisting device according to an embodiment of the present invention. As shown in the figure, the automatic needle-assisting device of the embodiment may include a ratchet (10), a lever (20), a guide tube (30), a power storage element (40), a slide rail (50), a first slider (60), a second slider (70), and a slider baffle (80). The various components of the automatic needle-assisting device will be described in detail below with reference to the accompanying drawings.

[0041] like Figure 1 and 9As shown, the ratchet (10) provides the power to trigger the automatic needle assist device. The ratchet (10) has a front boss arc surface (11) and a boss plane (12). The front boss arc surface is used to contact and press the front pressure bar (22) of the lever (20). However, when the ratchet (10) rotates a certain angle, the boss plane (12) faces the front pressure bar (22), so that the ratchet (10) no longer contacts and presses the front pressure bar (22), thereby triggering the automatic needle assist device. It should be understood that other suitable power devices can also be used to trigger the automatic needle assist device.

[0042] Figure 2 This is a three-dimensional structural diagram of the slide rail of the automatic needle-aiding device according to an embodiment of the present invention. Figure 3 This is a top view schematic diagram of the slide rail of the automatic needle-feeding device according to an embodiment of the present invention. (See attached diagram.) Figure 1-3 The slide rail (50) may include a front baffle (51), a rear baffle (52), two horizontal slide plates (53), a central spring plate (54), a rear mounting plate (55), and a torsion spring mounting post (56). The two horizontal slide plates (53) extend parallel to each other from the upper end of the front baffle (51) to the upper end of the rear baffle (52) and are spaced apart by a certain distance. Each of the two horizontal slide plates (53) may have a side baffle (531) formed on its outer side. The central spring plate (54) extends from the middle of the rear baffle toward the front baffle, and from a vertical angle, the central spring plate is located within the gap between the two horizontal slide plates (53) (see Appendix). Figure 3 The central spring (54) also has a bent boss (541) at its front end. The central spring (54) is elastic and can move up and down elastically under force, for example, it can be displaced under the action of the lever (20). At the same time, the bent boss (541) can also block or support the slider. The rear mounting plate (55) is connected to the lower end of the rear baffle (52) and extends horizontally. A torsion spring mounting post (56) is formed on it for mounting the torsion spring (41). A swivel arm riveting position (561) is also formed at the upper end of the torsion spring mounting post (56), which can be used to connect the swivel arm connecting rod (431) of the second swivel arm (43).

[0043] Figure 4 This is a perspective view of the lever of the automatic needle-aiding device according to an embodiment of the present invention. Figure 1 and 4As shown, the lever (20) is located below the slide rail (50) and may include a main rod (21), a front pressure rod (22), a side boss (23), and a stop (24). The front pressure rod (22) is fixed to the front end of the main rod (21) and is perpendicular to the main rod (21). The side boss (23) protrudes from the surface of the main rod (21) and extends along the main rod, and the stop (24) is formed on the side boss (23). There is a certain angle between the plane containing the front pressure rod (22) and the main rod (21) and the plane containing the side boss (23) and the main rod (21), for example, the angle may be an obtuse angle greater than 90 degrees. The stop (24) protrudes from one side of the side boss (23) and is substantially perpendicular to the plane containing the side boss (23) and the main rod (21). A portion of the upper surface of the stop (24) is formed as an inclined upper surface (241) to facilitate the sliding of the first slider (60) and the second slider (70). As the front pressure rod (22) rotates, the main rod (21) and the side boss (23) also rotate, causing different parts of the lever (20) to contact the front end of the middle spring (54). For example, different parts of the side boss (23) contact the front end of the middle spring (54), causing the horizontal height of the front end of the middle spring (54) (including the bent boss) to change, thereby causing the first slider (60) and the second slider (70) to be in a moving or stationary state.

[0044] Figure 5 A three-dimensional structural schematic diagram of the first slider of the automatic needle-aiding device according to an embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the second slider of the automatic needle-aiding device according to an embodiment of the present invention.

[0045] Referring to the attached drawings, the first slider (60) and the second slider (70) are mounted on the slide rail (50) and can slide back and forth along the two horizontal slide plates (53). More specifically, the first slider (60) has a baffle contact slope (61), a baffle limiting groove (62), a guide tube mounting position (63), and first sliding wings (64) on both sides. The baffle contact slope (61) cooperates with the inclined plate (82) of the slider baffle (80) to facilitate the first slider (60) to slide past the slider baffle (80), while the baffle limiting groove (62) behind the baffle contact slope (61) can restrict the first slider (60) from moving backward. The guide tube mounting position (63) is used to mount the guide tube (30), that is, one end of the guide tube (30) can be locked and fixed in the guide tube mounting position (63). The upper surfaces of the first sliding wings (64) on both sides abut against the lower surfaces of the two horizontal slide plates (53) and can slide along the lower surfaces. The second slider (70) has a first rotating arm connecting groove (71), an injection needle corner mounting position (72), and second sliding wings (73) on both sides. The first rotating arm connecting groove (71) is used to movably connect the first rotating arm (42), and the injection needle (1) is installed in the injection needle corner mounting position (72). In the initial state, the first slider (60) and the second slider (70) are adjacent to each other, the guide tube (30) is installed in the first slider (60), and the corner of the injection needle (1) is installed in the second slider (70), with part of the steel needle inserted into the guide tube.

[0046] A slider stop (80) is mounted on a horizontal slide plate (53). An inclined plate (82) is formed on the stop arm (81) of the slider stop (80) (see attached diagram). Figure 1 During the forward movement of the first slider (60), the baffle contact slope (61) cooperates with the inclined plate (82) so that the first slider (60) slides over the slider baffle (80), and the baffle limiting groove (62) cooperates with the baffle arm (81) to restrict the first slider (60) from moving backward.

[0047] Figure 7 This is a three-dimensional structural diagram of the first rotating arm of the automatic needle-aiding device according to an embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the second rotating arm of the automatic needle-aiding device according to an embodiment of the present invention.

[0048] Reference Appendix Figure 1 , 27 and 8, the power storage component (40) may include a torsion spring (41), a first rotating arm (42), and a second rotating arm (43). More specifically, the first rotating arm (42) has a slider connecting rod (421) and a rotating arm connecting hole (422), and the second rotating arm (43) has a rotating arm connecting rod (431) and a rotating arm connecting protrusion (432). The slider connecting rod (421) is connected to the first rotating arm connecting groove (71) and allows the second slider (70) to slide against the horizontal sliding plate (53); the rotating arm connecting hole (422) is connected to the rotating arm connecting protrusion (432), and the rotating arm connecting rod (431) is connected to the rotating arm riveting position (561) of the torsion spring mounting post (56). The torsion spring (41) rotates about the axis of the torsion spring mounting post (56) and applies force to the second slider (70) through the first rotating arm (42) and the second rotating arm (43).

[0049] As the power source of the device, the torsion spring (41) rotates around its axis in the initial state and is connected to the second slider (70) through the first rotating arm (42) and the second rotating arm (43), causing the second slider (70) and the adjacent first slider (60) to have a tendency to move forward. At this time, the arc surface (11) of the front boss of the ratchet (10) presses against the front pressure bar (22) of the lever, causing its side boss (23) to lift up and abut against the front end of the middle spring piece (54). In this way, the bent boss (541) is raised and the front end of the first slider (60) abuts against the bent boss (541) and cannot move forward, so that the torsion spring is always in a stored state.

[0050] Furthermore, the various components of the automatic needle-assist device of the present invention can be housed in an integrated housing, that is, the various components are integrated together. For example, the ratchet (10), lever (20), slide rail (50), and slider baffle (80) can be relatively fixed in a certain position by the housing. However, such a housing is not the point sought to be protected by the present invention, and can be easily implemented by those skilled in the art according to the disclosure of the present invention, so it will not be described in detail.

[0051] According to an embodiment of the present invention, an insulin injection pump is also provided, which may include the automatic needle assist device according to the present invention to achieve automatic needle assist and insulin injection.

[0052] The working process of the device of the present invention will be further described below with reference to the accompanying drawings.

[0053] Figure 10 This is a schematic diagram of the structure of the automatic needle-aiding device in its initial state during use according to an embodiment of the present invention; Figure 11a and 11b This is a three-dimensional and top view structural diagram of the automatic needle assist device according to an embodiment of the present invention in the needle assist state during use; Figure 12aThis is a top view of the automatic needle assist device according to an embodiment of the present invention in the needle retraction state during use; Figure 12b This is a three-dimensional structural diagram of the automatic needle assist device according to an embodiment of the present invention in the needle retraction state during use, wherein the catheter, injection needle and slider baffle are not shown, and only a part of the side baffle is shown.

[0054] As shown in the figure, the needle-assisting process of the device of the present invention can be divided into three states according to the positional change between the two sliders: initial state - needle-assisting state - needle-retracting state.

[0055] When the automatic needle assist device is in its initial state (reference) Figure 10 The first slider (60) and the second slider (70) are located adjacent to each other at the rear end of the horizontal slide plate (53). The power storage member (40) applies force to the second slider (70) and the first slider (60). The arc surface (11) of the front boss of the ratchet (10) presses against the front pressure rod (22) of the lever (20), so that the top of the side boss (23) abuts against the middle spring (54), and a force is applied to the front end of the middle spring (54) and it is lifted. After being lifted, the front end of the first slider (60) abuts against the bent boss (541), and the power storage member (40) applies a forward force to the second slider (70) and transmits it to the first slider (60). The bent boss (541) blocks the first slider (60) from sliding forward, so the power storage member (40) is in a power storage state. Meanwhile, the catheter (30) is installed in the first slider (60), the corner of the injection needle (1) is installed on the second slider (70), and a part of the injection needle is inserted into the catheter (30).

[0056] When performing injection (refer to) Figure 11a and 11b The ratchet (10) rotates at a certain angle, for example, 180 degrees, so that the arc surface (11) of the front boss of the ratchet (10) does not press against the front pressure bar (22). As a result, the middle spring (54) rebounds downward and reacts to the side boss (23), so that the lever (20) rotates at a certain angle. The side of the side boss (23) instead of the top abuts against the middle spring (54), and the stop (24) is vertically upward. In this way, the bent boss (541) no longer blocks the first slider (60) from sliding forward. The force stored in the power storage member (40) pushes the first slider (60) and the second slider (70) to move forward together, respectively driving the catheter (30) and the injection needle (1) to move forward until the top (for example, a front stop (not shown) can be set behind the front baffle (51) of the slide rail (50), thereby realizing the needle insertion.

[0057] refer to Figure 12a and 12bWhen the first slider (60) moves forward along the horizontal slide plate (53) to the top, the torsion spring (41) applies a backward force to the second slider (70) through the first rotating arm (42) and the second rotating arm (43), causing the second slider (70) to move backward. At the same time, the slider baffle (80) contacts the baffle limiting groove of the first slider (60), preventing it from moving backward. As a result, the second slider (70) causes the injection needle (1) to retract to the initial state while the catheter (30) remains in the inserted state. Meanwhile, the injection needle (1) is not completely detached from the catheter, and its front end remains in the catheter, replacing the tubing to deliver liquid medicine. In this retracted state, the lower surface of the first slider (60) contacts the upper surface of the baffle (24).

[0058] The above description of the embodiments is intended to enable those skilled in the art to understand and apply the present invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the embodiments described herein, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. An automatic needle-assist device, characterized in that, include: Ratchet (10), lever (20), guide tube (30), accumulator (40), slide rail (50), first slider (60), second slider (70) and slider baffle (80); The lever (20) is located below the slide rail (50) and includes a main rod (21), a front pressure rod (22), a side boss (23), and a stop (24). The front pressure rod (22) is fixed to the front end of the main rod (21) and is perpendicular to the main rod (21). The side boss (23) protrudes from the surface of the main rod (21) and extends along the main rod. The stop (24) is formed on the side boss (23). There is a certain angle between the plane where the front pressure rod (22) and the main rod (21) are located and the plane where the side boss (23) and the main rod (21) are located. The stop (24) is basically perpendicular to the plane where the side boss (23) and the main rod (21) are located. The slide rail (50) includes a front baffle (51), a rear baffle (52), two horizontal slide plates (53), and a central spring plate (54). The two horizontal slide plates (53) extend parallel from the upper end of the front baffle (51) to the upper end of the rear baffle (52) and are spaced apart by a certain distance. The central spring plate (54) extends from the middle of the rear baffle toward the front baffle, and from a vertical angle, the central spring plate is located in the gap between the two horizontal slide plates (53). The front end of the central spring plate (54) also has a bent boss (541). The first slider (60) and the second slider (70) are mounted on the slide rail (50) and can slide back and forth along the two horizontal slide plates (53); the conduit (30) is mounted on the first slider (60), the injection needle (1) is mounted on the second slider (70) and a part of the injection needle is inserted into the conduit (30); the accumulator (40) is fixed to the rear end of the slide rail (50) and is used to apply force to the second slider (70); the slider baffle (80) is mounted on the horizontal slide plate (53) and is used to prevent the first slider (60) from sliding backward. In the initial state of the automatic needle assist device, the first slider (60) and the second slider (70) are located adjacent to each other at the rear end of the horizontal slide plate (53). The power storage member (40) applies force to the second slider (70). The arc surface (11) of the front boss of the ratchet (10) presses against the front pressure rod (22) of the lever (20), so that the side boss (23) applies force to the front end of the middle spring (54) and lifts it. After being lifted, the front end of the first slider (60) abuts against the bent boss (541). The power storage member (40) applies a forward force to the second slider (70) and transmits it to the first slider (60). The bent boss (541) blocks the first slider (60) from sliding forward, so the power storage member (40) is in the power storage state. When the injection is performed, the ratchet (10) rotates at a certain angle, so that the arc surface (11) of the front boss of the ratchet (10) does not press against the front pressure rod (22). As a result, the middle spring (54) rebounds downward and reacts to the side boss (23), causing the lever (20) to rotate at a certain angle. At the same time, the bent boss (541) no longer blocks the first slider (60) from sliding forward. The force stored in the power storage device (40) pushes the first slider (60) and the second slider (70) to move forward together, respectively driving the catheter (30) and the injection needle (1) to move forward and realize the needle insertion. The stop block (24) has an inclined upper surface (241); after the lever (20) rotates at a certain angle, the inclined upper surface (241) faces upward. When the first slider (60) moves forward to the top, the lower surface of the first slider (60) contacts the upper surface of the stop block (24), and the lower surface of the second slider (70) contacts the top of the bent boss (541).

2. The automatic needle-assist device as described in claim 1, characterized in that: When the first slider (60) moves forward to the top along the horizontal slide plate (53), the accumulator (40) applies a backward force to the second slider (70) and drives the second slider (70) to move backward. At the same time, the slider baffle (80) blocks the first slider (60) from moving backward. As a result, the second slider (70) drives the injection needle (1) back to the initial state while the catheter (30) remains in the puncture state.

3. An automatic needle-assist device as described in claim 1 or 2, characterized in that: The slide rail (50) also includes a rear mounting plate (55) and a torsion spring mounting post (56). The rear mounting plate (55) is connected to the lower end of the rear baffle (52) and extends horizontally, and the torsion spring mounting post (56) is formed thereon.

4. An automatic needle-assist device as described in claim 3, characterized in that: The power storage component (40) includes a torsion spring (41), a first rotating arm (42), and a second rotating arm (43). The torsion spring (41) is fixed on the torsion spring mounting post (56). One end of the second rotating arm (43) is fixed on the torsion spring (41), and the other end is movably connected to one end of the first rotating arm (42). The other end of the first rotating arm (42) is connected to the second slider (70). The torsion spring (41) rotates around the axis of the torsion spring mounting post (56) and applies force to the second slider (70) through the first rotating arm (42) and the second rotating arm (43).

5. An automatic needle-aiding device as described in claim 1 or 2, characterized in that: The first slider (60) has a baffle contact slope (61), a baffle limiting groove (62), a guide tube mounting position (63), and first sliding wings (64) on both sides; a slope plate (82) is formed on the arm (81) of the slider baffle (80); during the forward movement of the first slider (60), the baffle contact slope (61) cooperates with the slope plate (82) so that the first slider (60) slides over the slider baffle (80), and the baffle limiting groove (62) cooperates with the arm (81) to restrict the first slider (60) from moving backward.

6. An automatic needle-assist device as described in claim 4, characterized in that: The second slider (70) has a first rotating arm connecting groove (71), an injection needle corner mounting position (72) and second sliding wings (73) on both sides. The first rotating arm connecting groove (71) is movably connected to the first rotating arm (42), and the injection needle (1) is installed in the injection needle corner mounting position (72).

7. An automatic needle-assist device as described in claim 6, characterized in that: The first rotating arm (42) has a slider connecting rod (421) and a rotating arm connecting hole (422), and the second rotating arm (43) has a rotating arm connecting rod (431) and a rotating arm connecting protrusion (432). The slider connecting rod (421) is connected to the first rotating arm connecting groove (71), the rotating arm connecting hole (422) is connected to the rotating arm connecting protrusion (432), and the rotating arm connecting rod (431) is connected to the rotating arm riveting position (561) of the torsion spring mounting post (56).

8. An automatic needle-assist device as described in claim 1 or 2, characterized in that: Two horizontal sliding plates (53) each have a side baffle (531) on their outer sides.

9. An insulin injection pump comprising an automated needle assist device according to any one of claims 1-8.

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