Application type needle assisting device for insulin pump

Abstract

The invention relates to the field of medical supplies, and discloses an application type insulin pump needle assisting device which comprises a base, a shell, a sliding part, an energy storage assembly, a limiting part and an excitation assembly, the base is used for being applied to the position where a needle needs to be applied, and a needle punching opening is formed in the base; the shell is detachably mounted on the base; the sliding piece is arranged in the shell in a sliding mode, and a puncture needle and a retention needle arranged on the puncture needle in a sleeving mode are arranged on the sliding piece; the energy storage assembly is used for driving the sliding piece to approach the needling opening to a first position and far away from the needling opening from the first position to a second position; the excitation assembly is used for preventing the limiting piece from rotating before being excited and allowing the limiting piece to rotate from the first angle to the second angle after being excited. The application type needle assisting device for the insulin pump is simple in structure, low in cost, capable of being used as a disposable consumable, safe, sanitary, compact in structure, portable and convenient to use.

Description

Technical Field

[0001] The present invention relates to the field of medical supplies, and in particular to a needle-assisting device for an application-type insulin pump. Background Art

[0002] As people's quality of life improves, high-calorie, high-fat eating habits increase the probability of humans suffering from diabetes. Diabetics need to control blood sugar in a timely manner to avoid inducing complications and threatening human health. For blood sugar control, regular insulin injection is particularly critical. The insulin pump is currently a novel medical device for the treatment of diabetes. Its main function is to manually set the infusion volume of the insulin pump, and to infuse a small amount of insulin into the patient's body every short period of time through a subcutaneous infusion retention needle with a hose to achieve the purpose of controlling the patient's blood sugar, thereby controlling the patient's blood sugar and reducing complications. The infusion retention needle with a hose needs to be injected into the subcutaneous tissue with a needle aid.

[0003] Currently, the insulin pump needle assist devices on the market are all compressed by a single or multiple compression springs, which are unlocked by the user by pressing a button. The compression spring releases the elastic force, driving the puncture needle and the hose to puncture the human skin. A structure must also be designed to retract the steel needle, leaving only the hose in the subcutaneous tissue. This type of needle assist device has many parts, a complex structure, and occupies a large space, making it inconvenient to carry. During operation, some patients need to assemble and charge the springs themselves, and a large force is required when stimulating and pressing. The operation is cumbersome and difficult, and there is even a possibility of stimulating failure and functional failure. Summary of the invention

[0004] The object of the present invention is to provide a needle assisting device for an application-type insulin pump to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A needle-assisting device for an application-type insulin pump comprises a base, a housing, a sliding member, an energy storage component, a limiting member and an excitation component, wherein:

[0007] The base is used to be applied to the position where acupuncture is required, and a needle puncture opening is arranged on the base;

[0008] The shell is detachably mounted on the base;

[0009] The sliding member is slidably disposed in the housing, and the sliding member is provided with a puncture needle and a retention needle sleeved on the puncture needle;

[0010] The energy storage component is used to drive the sliding member to approach the puncture port to a first position and to move away from the puncture port to a second position. When the sliding member is in the first position, the puncture needle and the retention needle pass through the base from the puncture port, and the retention needle is locked with the puncture port; when the sliding member is in the second position, the puncture needle retreats into the housing;

[0011] The limiting member is rotatably arranged in the housing and is located on one side of the sliding member;

[0012] The excitation component is used to prevent the limit member from rotating before being excited and allow the limit member to rotate from a first angle to a second angle after being excited. When the limit member is at the first angle, the limit member blocks the sliding member from reaching the first position; when the limit member is at the second angle, the limit member releases the blocking effect on the sliding member.

[0013] As an optional solution, a guide groove is provided on the inner wall of the shell, and the sliding part is installed in the guide groove. A fixing part is provided on the shell and located on the side of the sliding part away from the acupuncture port. One end of the energy storage assembly is connected to the fixing part, and the other end of the energy storage assembly is connected to the sliding part.

[0014] As an optional solution, the energy storage assembly includes a swing arm, a push rod and a torsion spring. The first end of the swing arm is rotationally connected to the fixed part, the second end of the swing arm is rotationally connected to the first end of the push rod, the second end of the push rod is rotationally connected to the sliding member, and the torsion spring is mounted on the rotating shaft of the swing arm and the fixed part. The torsion spring is used to provide a driving force for the swing arm to rotate clockwise or counterclockwise.

[0015] As an optional solution, the rotation point of the swing arm and the fixed part, the rotation point of the push rod and the sliding part, the puncture needle, and the retention needle are all located in the same plane, and the initial angle between the push rod and the plane is 10° to 60°.

[0016] As an optional solution, a flange is provided on the surface of the retention needle, and a buckle is provided on the inner wall of the acupuncture port. When the sliding member is in the first position, the retention needle is inserted into the acupuncture port and the flange cooperates with the buckle, so that the retention needle is fixedly connected to the acupuncture port.

[0017] As an optional solution, the limiting member is provided with a first limiting portion and a second limiting portion, wherein:

[0018] Before the exciting component is excited, the first limiting portion is limited by the exciting component, so that the limiting member cannot rotate and remains at the first angle, and the second limiting portion blocks the sliding member;

[0019] After being excited, the exciting component releases the limiting effect on the first limiting part, the limiting member rotates to the second angle, and the second limiting part releases the blocking effect on the sliding member.

[0020] As an optional solution, the excitation component includes an excitation member located in the shell, the excitation member and the sliding member are distributed on both sides of the limit member, a compression spring is arranged between one end of the excitation member and the inner wall of the shell, the other end of the excitation member extends out of the shell to form a pressing end, the excitation of the excitation component is achieved by pressing the pressing end, and an avoidance opening is arranged on the excitation member;

[0021] Before the excitation component is excited, the first limiting portion abuts against the side surface of the excitation member;

[0022] After the excitation component is excited, the first limiting portion can enter the avoidance opening, so that the limiting member can be rotated from the first angle to the second angle.

[0023] As an optional solution, a third limiting portion is further provided on the limiting member, and a blocking edge is provided in the shell, which is used to limit the third limiting portion of the limiting member when it is at the second angle, so as to limit the limiting member from continuing to rotate after it turns to the second angle.

[0024] As an optional solution, after the excitation component is excited, the excitation member moves toward the pressing end under the elastic force of the compression spring, and the avoidance opening and the first limiting portion abut against each other to limit the limiting member from reversing from the second angle to the first angle.

[0025] As an optional solution, an anti-accidental touch member is provided on the housing, and the anti-accidental touch member can be moved from the third position to the fourth position, wherein:

[0026] When the anti-mistaken-touch element is in the third position, the anti-mistaken-touch element abuts against the pressing end to limit the trigger element;

[0027] When the anti-mistaken-touch component is in the fourth position, the anti-mistaken-touch component avoids the pressing end to release the limiting effect on the triggering component.

[0028] The beneficial effects of the present invention are as follows: the base of the application-type insulin pump needle aid is applied to the position on the human body where acupuncture is required, and then a shell is assembled on the base. The energy storage component in the shell provides power for puncture, and the energy storage component is stimulated by the excitation component to release energy, thereby realizing the puncture and retraction of the puncture needle and the retention of the retention needle. After that, the insulin pump is replaced on the base, and the infusion line of the insulin pump is connected to the retention needle to realize the infusion function. The needle aid has a simple structure and low cost, can be used as a disposable consumable, is safe and hygienic, and has a compact structure, is portable, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 1 is a schematic diagram of the structure of a needle-assisting device for an insulin pump provided in an embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of the internal structure of a shell in a needle-assisting device for an insulin pump provided by an embodiment of the present invention;

[0031] Figure 3 The structure of the needle aid for the insulin pump provided by the embodiment of the present invention before being activated is shown in FIG. Figure 1 ;

[0032] Figure 4 The structure of the needle aid for the insulin pump provided by the embodiment of the present invention before being activated is shown in FIG. Figure 2 ;

[0033] Figure 5 The structure diagram of the present invention is shown in FIG. 1 after the needle aid for the insulin pump is activated and the sliding member is in the first position. Figure 1 ;

[0034] Figure 6 The structure diagram of the present invention is shown in FIG. 1 after the needle aid for the insulin pump is activated and the sliding member is in the first position. Figure 2 ;

[0035] Figure 7 The structure diagram of the present invention is shown in FIG. 1 after the needle aid for the insulin pump is activated and the sliding member is in the second position. Figure 1 ;

[0036] Figure 8 The structure diagram of the present invention is shown in FIG. 1 after the needle aid for the insulin pump is activated and the sliding member is in the second position. Figure 2 ;

[0037] Fig. 9 It is a schematic diagram of the coordination between the anti-mistouch component and the excitation component in the needle aid for an application-type insulin pump provided in an embodiment of the present invention.

[0038] In the attached figure:

[0039] 1. Base; 11. Needle puncture opening;

[0040] 2. Shell; 21. Guide groove; 22. Fixing portion; 23. Undercut; 24. Stop edge;

[0041] 3. Sliding member; 31. Puncture needle; 32. Retention needle; 33. Flange;

[0042] 4. Energy storage assembly; 41. Swing arm; 42. Push rod; 43. Torsion spring;

[0043] 5. Limiting member; 51. First limiting portion; 52. Second limiting portion; 53. Third limiting portion;

[0044] 6. Excitation assembly; 61. Excitation member; 62. Compression spring; 63. Pressing end; 64. Avoidance; 65. Protrusion;

[0045] 7. Anti-accidental touch parts. DETAILED DESCRIPTION

[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0047] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0050] See also Figures 1 to 9 As shown, this preferred embodiment provides a needle-assisting device for an insulin pump patch, comprising a base 1, a housing 2, a sliding member 3, an energy storage component 4, a stopper 5 and an excitation component 6, wherein:

[0051] The base 1 is used for applying to the position where acupuncture is required, and an acupuncture opening 11 is provided on the base 1;

[0052] The housing 2 is detachably mounted on the base 1;

[0053] The sliding member 3 is slidably disposed in the housing 2, and the sliding member 3 is provided with a puncture needle 31 and a retention needle 32 sleeved on the puncture needle 31;

[0054] The energy storage assembly 4 is used to drive the sliding member 3 to approach the acupuncture port 11 to a first position and to move away from the acupuncture port 11 to a second position. When the sliding member 3 is in the first position, the puncture needle 31 and the retention needle 32 pass through the base 1 from the acupuncture port 11, and the retention needle 32 is locked with the acupuncture port 11; when the sliding member 3 is in the second position, the puncture needle 31 retreats into the housing 2;

[0055] The limiting member 5 is rotatably disposed in the housing 2 and is located on one side of the sliding member 3;

[0056] The excitation component 6 is used to prevent the limit member 5 from rotating before being excited and to allow the limit member 5 to rotate from the first angle to the second angle after being excited. When the limit member 5 is at the first angle, the limit member 5 blocks the sliding member 3 from reaching the first position; when the limit member 5 is at the second angle, the limit member 5 releases the blocking effect on the sliding member 3.

[0057] Therefore, the base 1 is applied to the position on the human body where acupuncture is required, and then the shell 2 is assembled on the base 1. The energy storage component 4 in the shell 2 provides power for puncture, and the energy storage component 4 is stimulated by the excitation component 6 to release energy, thereby realizing the puncture and retraction of the puncture needle 31 and the retention needle 32. After that, an insulin pump is replaced on the base 1, and the infusion line of the insulin pump is connected to the retention needle 32, so that the infusion function can be realized.

[0058] Optionally, a guide groove 21 is provided on the inner wall of the shell 2, and the sliding member 3 is installed in the guide groove 21. A fixing portion 22 is provided on the shell 2 and located on the side of the sliding member 3 away from the acupuncture port 11. One end of the energy storage component 4 is connected to the fixing portion 22, and the other end of the energy storage component 4 is connected to the sliding member 3 to ensure that the sliding member 3 is accurately positioned from the initial position to the first position and then to the second position.

[0059] Optionally, see Figure 2 The energy storage assembly 4 includes a swing arm 41, a push rod 42 and a torsion spring 43. The first end of the swing arm 41 is rotatably connected to the fixed part 22, the second end of the swing arm 41 is rotatably connected to the first end of the push rod 42, the second end of the push rod 42 is rotatably connected to the sliding member 3, and the torsion spring 43 is sleeved on the rotating shaft of the swing arm 41 and the fixed part 22. The torsion spring 43 is used to give the swing arm 41 a driving force to rotate clockwise or counterclockwise. Before excitation, the driving force is in an energy storage state; after excitation, the driving force is released.

[0060] Here, a torsion spring 43 is used to drive the swing arm 41 to move in a circular motion, but it is not limited thereto. It can also be a spring spring, a reed, etc. The movement mode of releasing the elastic force is preferably a circular or quasi-circular motion. Compared with the linear motion of the traditional compression spring, the structure is more compact, there is no loose feeling, it is easy to carry and the cost is low. In this embodiment, the direction of releasing the elastic force of the torsion spring 43 is illustrated as clockwise.

[0061] Furthermore, the rotation point of the swing arm 41 and the fixed part 22, the rotation point of the push rod 42 and the sliding member 3, the puncture needle 31, and the retention needle 32 are all located in the same plane, and the initial angle between the push rod 42 and the plane is 10° to 60°. In this embodiment, 45° is used as an example to achieve efficient force transmission. In addition, the effective length of the push rod 42 should not be less than the effective length of the swing arm 41, and the effective length refers to the straight-line distance between the rotation points at both ends. In addition, the shape of the swing arm 41 and the push rod 42 is not limited to a long strip, but can also be an ellipse or a disc, etc., and is designed according to the specific spatial arrangement.

[0062] Optionally, a flange 33 is provided on the surface of the retention needle 32, and a buckle 23 is provided on the inner wall of the acupuncture port 11. When the sliding member 3 is in the first position, the retention needle 32 is inserted into the acupuncture port 11 and the flange 33 cooperates with the buckle 23, so that the retention needle 32 is fixedly connected to the acupuncture port 11, thereby achieving the retention of the retention needle 32 after the puncture needle 31 is withdrawn after puncture, without additional operation, and the whole process is continuous, see Figure 4 , Figure 6 and Figure 8 , faster and less painful.

[0063] Optionally, the limiting member 5 is provided with a first limiting portion 51 and a second limiting portion 52. Before the exciting component 6 is excited, the first limiting portion 51 is limited by the exciting component 6, so that the limiting member 5 cannot rotate and remains at the first angle, and the second limiting portion 52 blocks the sliding member 3. For details, see Figure 3 After the excitation component 6 is excited, the limiting effect on the first limiting portion 51 is released, the limiting member 5 is rotated to the second angle, and the second limiting portion 52 releases the blocking effect on the sliding member 3, see Figure 5 and Figure 7 .

[0064] Furthermore, the excitation component 6 includes an excitation member 61 located in the housing 2. The excitation member 61 and the sliding member 3 are distributed on both sides of the limiting member 5. A compression spring 62 is arranged between one end of the excitation member 61 and the inner wall of the housing 2. The other end of the excitation member 61 extends out of the housing 2 to form a pressing end 63. The excitation of the excitation component 6 is achieved by pressing the pressing end 63. The excitation member 61 is provided with an avoidance opening 64. Before the excitation component 6 is excited, the first limiting portion 51 abuts against the side surface of the excitation member 61. See Figure 3 After the excitation component 6 is excited, the first limiting portion 51 can enter the avoidance opening 64, so that the limiting member 5 is turned from the first angle to the second angle, see Figure 5 In addition, a protrusion 65 is further provided on the side surface of the trigger member 61 , and the protrusion 65 is used to limit the upward stroke of the trigger member 61 to prevent the trigger member 61 from extending excessively out of the housing 2 due to the elastic force of the compression spring 62 .

[0065] Furthermore, the limiting member 5 is further provided with a third limiting portion 53, and the housing 2 is provided with a stop edge 24, which is used to limit the third limiting portion 53 of the limiting member 5 when it is at the second angle, so as to limit the limiting member 5 from continuing to rotate after it turns to the second angle, see Figure 7 .

[0066] Furthermore, after the excitation assembly 6 is excited, the excitation member 61 is moved toward the pressing end 63 by the elastic force of the compression spring 62, and the avoidance opening 64 and the first limiting portion 51 abut against each other to limit the limiting member 5 from reversing from the second angle to the first angle, see Figure 7 .

[0067] Optionally, the housing 2 is further provided with an anti-false touch member 7, which can be moved from the third position to the fourth position. When the anti-false touch member 7 is in the third position, the anti-false touch member 7 abuts against the pressing end 63 to limit the trigger member 61. Fig. 9 When the anti-accidental touch member 7 is in the fourth position, the anti-accidental touch member 7 avoids the pressing end 63 to release the limiting effect on the trigger member 61.

[0068] In this embodiment, the position switching form of the anti-accidental touch member 7 is exemplified by sliding, but is not limited to this, and can also be a pressing method, etc., and the setting position of the anti-accidental touch member 7 is not limited to the top of the shell 2, but can also be on the side surface of the shell 2.

[0069] In addition, the sliding member 3 is detachably connected to the needle seat of the puncture needle 31, so that the puncture needle 31 can be replaced; after replacing the new puncture needle 31, the shell 2 and the internal structure can be reused, and only the used puncture needle 31 needs to be discarded, which can save the use cost.

[0070] The following is an example of insulin injection for diabetic patients to explain the usage process in detail:

[0071] 1) Before use, the patient first applies the base 1 to the location where acupuncture is required, and then assembles the unactivated shell 2 onto the base 1;

[0072] 2) Before the patient activates the activation assembly 6, the anti-mistouch member 7 needs to be toggled to unlock the movement of the activation assembly 6. At this time, the limiting member 5 is at a first angle, the first limiting portion 51 of the limiting member 5 abuts against the activation member 61, and the second limiting portion 52 of the limiting member 5 limits the sliding member 3. See Figure 3 and Figure 4 ;

[0073] 3) After the patient presses the pressing end 63 of the trigger member 61, the rotatable space of the limiter 5 is given up, and the slide member 3 drives the puncture needle 31 and the retention needle 32 to move downward under the action of the swing arm 41 and the push rod 42 driven by the torsion spring 43, and the puncture needle 31 realizes the function of puncturing the skin. At this time, the second limiter 52 of the limiter 5 is pushed open by the slide member 3, and the limiter 5 rotates to the second angle, and the slide member 3 moves to the first position, that is, the puncture reaches the correct position, and at the same time, the retention needle 32 is fixed by the undercut 23 on the base 1, see Figure 5 and Figure 6 ;

[0074] 4) After the slider 3 moves to the second position, the torsion spring 43 continues to release its elastic force, and the slider 3 drives the puncture needle 31 to pull upward, and the puncture needle 31 is retracted into the housing 2, and the retention needle 32 is fixed on the base 1, see Figure 7 and Figure 8 ;

[0075] 5) After removing the housing 2, the base 1 can be equipped with a corresponding insulin pump. After the infusion line of the insulin pump is connected to the retention needle 32, a small amount of insulin can be injected into the patient's body as needed.

[0076] In summary, the needle aid for the insulin pump patch has a simple structure, low cost, can be used as a disposable consumable, is safe and hygienic, and has a compact structure, is portable, and is easy to use.

[0077] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A needle aid for a patch-type insulin pump, characterized in that: It comprises a base (1), a shell (2), a sliding member (3), an energy storage component (4), a limiting member (5) and an excitation component (6), wherein: The base (1) is used for applying to a location where acupuncture is required, and an acupuncture opening (11) is provided on the base (1); The housing (2) is detachably mounted on the base (1); The sliding member (3) is slidably disposed in the housing (2), and the sliding member (3) is provided with a puncture needle (31) and a retention needle (32) sleeved on the puncture needle (31); The energy storage component (4) is used to drive the sliding member (3) to approach the acupuncture port (11) to a first position and to move away from the acupuncture port (11) to a second position from the first position; when the sliding member (3) is in the first position, the puncture needle (31) and the retention needle (32) pass through the base (1) from the acupuncture port (11), and the retention needle (32) is locked with the acupuncture port (11); when the sliding member (3) is in the second position, the puncture needle (31) is retracted into the housing (2); The limiting member (5) is rotatably arranged in the housing (2) and is located on one side of the sliding member (3); The excitation component (6) is used to prevent the limit member (5) from rotating before being excited and to allow the limit member (5) to rotate from a first angle to a second angle after being excited. When the limit member (5) is at the first angle, the limit member (5) blocks the sliding member (3) from reaching the first position; when the limit member (5) is at the second angle, the limit member (5) releases the blocking effect on the sliding member (3).

2. The needle-assisting device for an insulin pump according to claim 1, characterized in that: A guide groove (21) is provided on the inner wall of the shell (2), the sliding member (3) is mounted in the guide groove (21), a fixing portion (22) is provided on the shell (2) and located on a side of the sliding member (3) away from the acupuncture opening (11), one end of the energy storage component (4) is connected to the fixing portion (22), and the other end of the energy storage component (4) is connected to the sliding member (3).

3. The needle-assisting device for an insulin pump according to claim 2, characterized in that: The energy storage assembly (4) comprises a swing arm (41), a push rod (42) and a torsion spring (43); the first end of the swing arm (41) is rotationally connected to the fixed part (22); the second end of the swing arm (41) is rotationally connected to the first end of the push rod (42); the second end of the push rod (42) is rotationally connected to the sliding member (3); the torsion spring (43) is sleeved on the rotating shaft of the swing arm (41) and the fixed part (22); the torsion spring (43) is used to provide the swing arm (41) with a driving force for rotating in a clockwise or counterclockwise direction.

4. The needle-assisting device for an insulin pump according to claim 3, characterized in that: The rotation point of the swing arm (41) and the fixed part (22), the rotation point of the push rod (42) and the sliding member (3), the puncture needle (31), and the retention needle (32) are all located in the same plane, and the initial angle between the push rod (42) and the plane is 10° to 60°.

5. The needle-assisting device for an insulin pump according to claim 1, characterized in that: The surface of the retention needle (32) is provided with a flange (33), and the inner wall of the acupuncture port (11) is provided with a buckle (23). When the sliding member (3) is in the first position, the retention needle (32) is inserted into the acupuncture port (11) and the flange (33) cooperates with the buckle (23), so that the retention needle (32) is fixedly connected to the acupuncture port (11).

6. The needle-assisting device for an insulin pump according to claim 1, characterized in that: The limiting member (5) is provided with a first limiting portion (51) and a second limiting portion (52), wherein: Before the excitation component (6) is excited, the first limiting portion (51) is limited by the excitation component (6), so that the limiting member (5) cannot rotate and remains at the first angle, and the second limiting portion (52) blocks the sliding member (3); After being stimulated, the excitation component (6) releases the limiting effect on the first limiting portion (51), the limiting member (5) rotates to the second angle, and the second limiting portion (52) releases the blocking effect on the sliding member (3).

7. The needle-assisting device for an insulin pump according to claim 6, characterized in that: The excitation component (6) comprises an excitation member (61) located in the shell (2); the excitation member (61) and the sliding member (3) are distributed on both sides of the limiting member (5); a compression spring (62) is arranged between one end of the excitation member (61) and the inner wall of the shell (2); the other end of the excitation member (61) extends out of the shell (2) to form a pressing end (63); the excitation of the excitation component (6) is achieved by pressing the pressing end (63); and an avoidance opening (64) is arranged on the excitation member (61); Before the excitation component (6) is excited, the first limiting portion (51) abuts against the side surface of the excitation member (61); After the excitation component (6) is excited, the first limiting portion (51) can enter the avoidance opening (64), thereby enabling the limiting member (5) to rotate from the first angle to the second angle.

8. The needle-assisting device for an insulin pump according to claim 7, characterized in that: The limiting member (5) is also provided with a third limiting portion (53), and the housing (2) is provided with a blocking edge (24), the blocking edge (24) being used to limit the third limiting portion (53) of the limiting member (5) when the limiting member (5) is at the second angle, so as to limit the limiting member (5) from continuing to rotate after it is rotated to the second angle.

9. The needle-assisting device for an insulin pump according to claim 8, characterized in that: After the excitation component (6) is excited, the excitation member (61) moves toward the pressing end (63) under the elastic force of the compression spring (62), and the avoidance opening (64) and the first limiting portion (51) abut against each other to limit the limiting member (5) from reversing from the second angle to the first angle.

10. The needle-assisting device for an insulin pump according to claim 7, characterized in that: The housing (2) is provided with an anti-mistaken touch member (7), and the anti-mistaken touch member (7) can be moved from a third position to a fourth position, wherein: When the anti-false-touch member (7) is in the third position, the anti-false-touch member (7) abuts against the pressing end (63), thereby limiting the excitation member (61); When the anti-mistaken-touch member (7) is in the fourth position, the anti-mistaken-touch member (7) avoids the pressing end (63) to release the limiting effect on the excitation member (61).

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