Application type needle assisting device for insulin pump

Abstract

The utility model 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 piece, an energy storage assembly, a limiting piece 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 utility model relates to medical supplies field especially, a kind of needle aid for application type insulin pump. BACKGROUND

[0002] With the improvement of people's quality of life, high-calorie, high-fat dietary habits make the probability of human suffering from diabetes increase. Diabetic patients need to control blood sugar in time to avoid inducing complications and threatening human health. For blood sugar control, regular insulin injection is particularly critical. Insulin pump is a novel medical device for treating diabetes at present, which mainly functions to control patient's blood sugar and reduce complications by setting the infusion amount of insulin pump artificially, and micro-infusing insulin into patient's body every small period of time through subcutaneous infusion retention needle with hose to achieve the purpose of controlling patient's blood sugar, wherein the infusion retention needle with hose needs to be injected into subcutaneous tissue by needle aid.

[0003] The needle aid for insulin pump on the market at present is compressed by single or multiple compression springs, and the user unlocks it by pressing the key, the compression spring releases elastic force, drives the puncture needle to puncture the skin of human body with the hose, and the steel needle needs to be designed to be retracted, only leaving the hose in subcutaneous tissue. This needle aid has many parts, complex structure, and large space occupation, and is inconvenient to carry. When operating, some need to be assembled by patients themselves and store energy in spring, and need to have large force when triggering, which is tedious and difficult to operate, and even has the situation of triggering failure and function failure. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a needle aid for application type insulin pump to solve the problems in the above background technology.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A needle aid for application type insulin pump, comprising a base, a shell, a sliding member, an energy storage assembly, a limiting member and an activation assembly, wherein:

[0007] The base is used for applying to the position where needle is needed to be applied, and the base is provided with a needle puncture opening;

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

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

[0010] The energy storage assembly is used to drive the sliding member to approach the needle puncture port to the first position and to move away from the needle puncture port to the second position, when the sliding member is in the first position, the puncture needle and the retention needle are out of the base from the needle puncture port, and the retention needle is locked with the needle puncture port; when the sliding member is in the second position, the puncture needle is retracted into the shell.

[0011] The limiting member is rotatably arranged in the shell and located at one side of the sliding member.

[0012] The exciting assembly is used to prevent the limiting member from rotating before being excited and to allow the limiting member to rotate from the first angle to the second angle after being excited, when the limiting member is in the first angle, the limiting member blocks the sliding member from reaching the first position; when the limiting member is in the second angle, the limiting member removes the blocking effect on the sliding member.

[0013] As an optional solution, a guide groove is arranged on the inner wall of the shell, the sliding member is embedded in the guide groove, a fixing part is arranged on the shell and located at the side of the sliding member away from the needle puncture port, one end of the energy storage assembly is connected with the fixing part, and the other end of the energy storage assembly is connected with the sliding member.

[0014] As an optional solution, the energy storage assembly comprises a swing arm, a push rod and a torsion spring, the first end of the swing arm is rotatably connected with the fixing part, the second end of the swing arm is rotatably connected with the first end of the push rod, the second end of the push rod is rotatably connected with the sliding member, and the torsion spring is sleeved on the rotation shaft of the swing arm and the fixing part, and the torsion spring is used to provide a driving force for the clockwise or counterclockwise rotation of the swing arm.

[0015] As an optional solution, the rotation point of the swing arm and the fixing part, the rotation point of the push rod and the sliding member, 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°-60°.

[0016] As an optional solution, the surface of the retention needle is provided with a flange, the inner wall of the needle puncture port is provided with an inverted buckle, when the sliding member is in the first position, the retention needle is inserted into the needle puncture port and the flange cooperates with the inverted buckle, so that the retention needle is fixed with the needle puncture port.

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

[0018] Before being excited, the first limiting part is limited by the exciting assembly, so that the limiting member cannot rotate and remains in the first angle, and the second limiting part blocks the sliding member;

[0019] After being excited, the first limiting part is removed from the limiting effect, the limiting member rotates to the second angle, and the second limiting part removes the blocking effect on the sliding member.

[0020] As an optional solution, the exciting component comprises an exciting piece in the shell, the exciting piece is distributed on both sides of the limiting piece with the sliding piece, a compression spring is arranged between one end of the exciting piece and the inner wall of the shell, the other end of the exciting piece extends out of the shell to form a pressing end, the exciting of the exciting component is realized by pressing the pressing end, and an avoiding opening is arranged on the exciting piece;

[0021] Before the exciting component is excited, the first limiting part abuts against the side surface of the exciting piece;

[0022] After the exciting component is excited, the first limiting part can enter the avoiding opening, and the limiting piece is turned from the first angle to the second angle.

[0023] As an optional solution, a third limiting part is further arranged on the limiting piece, and a blocking edge is arranged in the shell, the blocking edge is used for limiting the third limiting part of the limiting piece in the second angle, so that the rotation of the limiting piece to the second angle is limited.

[0024] As an optional solution, after the exciting component is excited, the exciting piece moves towards the pressing end under the elastic force of the compression spring, the avoiding opening and the first limiting part abut against each other, so that the limiting piece is limited to be reversed from the second angle to the first angle.

[0025] As an optional solution, a mistaken touch prevention piece is arranged on the shell, and the mistaken touch prevention piece can move from a third position to a fourth position, wherein:

[0026] When the mistaken touch prevention piece is in the third position, the mistaken touch prevention piece abuts against the pressing end, and limits the exciting piece;

[0027] When the mistaken touch prevention piece is in the fourth position, the mistaken touch prevention piece avoids the pressing end, so that the limiting effect on the exciting piece is removed.

[0028] The application has the advantages that the applicator type insulin pump needle assisting device is used for pasting the base on the position of the human body where the needle needs to be applied, then assembling the shell on the base, providing the power for puncture through the energy storage component in the shell, exciting the energy storage component to release energy through the exciting component, realizing the puncture and retraction of the puncture needle and the indwelling of the indwelling needle, then replacing the insulin pump on the base, and the infusion pipeline of the insulin pump is communicated with the indwelling needle, so that the infusion function is realized, the needle assisting device has the advantages of simple structure, low cost, safety and health, compact structure, portability and convenient use. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structure schematic view of the applicator type insulin pump needle assisting device provided by the application;

[0030] Figure 2 is an internal structure schematic view of the shell in the applicator type insulin pump needle assisting device provided by the application;

[0031] Figure 3 is the structure schematic diagram of the needle assisting device before excitation of the adhesive type insulin pump provided by the embodiment of the utility model Figure 1 ;

[0032] Figure 4 is the structure schematic diagram of the needle assisting device before excitation of the adhesive type insulin pump provided by the embodiment of the utility model Figure 2 ;

[0033] Figure 5 is the structure schematic diagram of the needle assisting device after excitation and when the sliding part is in the first position of the adhesive type insulin pump provided by the embodiment of the utility model Figure 1 ;

[0034] Figure 6 is the structure schematic diagram of the needle assisting device after excitation and when the sliding part is in the first position of the adhesive type insulin pump provided by the embodiment of the utility model Figure 2 ;

[0035] Figure 7 is the structure schematic diagram of the needle assisting device after excitation and when the sliding part is in the second position of the adhesive type insulin pump provided by the embodiment of the utility model Figure 1 ;

[0036] Figure 8 is the structure schematic diagram of the needle assisting device after excitation and when the sliding part is in the second position of the adhesive type insulin pump provided by the embodiment of the utility model Figure 2 ;

[0037] Figure 9 is the cooperation schematic view of the anti-mis-touch part and excitation assembly in the needle assisting device of the adhesive type insulin pump provided by the embodiment of the utility model.

[0038] In the drawings:

[0039] 1, base; 11, needle puncture port;

[0040] 2, shell; 21, guide groove; 22, fixed part; 23, reverse buckle; 24, blocking edge;

[0041] 3, sliding part; 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 part; 51, first limiting part; 52, second limiting part; 53, third limiting part;

[0044] 6, excitation assembly; 61, excitation part; 62, compression spring; 63, pressing end; 64, avoiding port; 65, protrusion;

[0045] 7. Anti-mis-touch member. DETAILED DESCRIPTION

[0046] The utility model will be described in further detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the utility model and are not a limitation on the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0047] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0048] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0049] In the description of the embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description and have no special meaning.

[0050] Please refer to Figures 1 to 9 The preferred embodiment shown provides a needle assisting device for patch type insulin pump, which comprises a base 1, a shell 2, a sliding piece 3, an energy storage assembly 4, a limiting piece 5 and an exciting assembly 6, wherein:

[0051] The base 1 is used for being attached to the position where the needle is needed to be applied, and the base 1 is provided with a needle puncture port 11;

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

[0053] The sliding member 3 is slidably arranged 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 move close to the needle puncture port 11 to a first position and move away from the needle puncture 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 are out of the needle puncture port 11 from the base 1, and the retention needle 32 is locked with the needle puncture port 11; when the sliding member 3 is in the second position, the puncture needle 31 is retracted into the housing 2;

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

[0056] The excitation assembly 6 is used to prevent the limiting member 5 from rotating before being excited and allow the limiting member 5 to rotate from a first angle to a second angle after being excited, when the limiting member 5 is in the first angle, the limiting member 5 blocks the sliding member 3 from reaching the first position; when the limiting member 5 is in the second angle, the limiting member 5 removes the blocking effect on the sliding member 3.

[0057] Therefore, the base 1 is applied to the position of the human body where the needle needs to be applied, and then the housing 2 is assembled on the base 1, the puncture power is provided by the energy storage assembly 4 in the housing 2, and the energy release of the energy storage assembly 4 is excited by the excitation assembly 6 to realize the puncture and retraction of the puncture needle 31 and the retention of the retention needle 32; then the insulin pump is replaced on the base 1, and the infusion pipeline of the insulin pump is communicated with the retention needle 32, so that the infusion function is realized.

[0058] Optionally, a guide groove 21 is arranged on the inner wall of the housing 2, the sliding member 3 is embedded in the guide groove 21, a fixed part 22 is arranged on the housing 2 and located at the side of the sliding member 3 away from the needle puncture port 11, one end of the energy storage assembly 4 is connected with the fixed part 22, and the other end of the energy storage assembly 4 is connected with the sliding member 3, so as to ensure the position accuracy of the sliding member 3 from the initial position to the first position and then to the second position.

[0059] Optionally, as shown in 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 rotationally connected with the fixed part 22, the second end of the swing arm 41 is rotationally connected with the first end of the push rod 42, the second end of the push rod 42 is rotationally connected with the sliding member 3, and the torsion spring 43 is sleeved on the rotation shaft of the swing arm 41 and the fixed part 22, and the torsion spring 43 is used to provide a driving force for the clockwise or counterclockwise rotation of the swing arm 41. 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 in a circular motion, but it is not limited to this; it can also be a clock spring, a leaf spring, etc. The preferred motion mode for releasing the elastic force is circular or near-circular motion. Compared with the linear motion of traditional compression springs, the structure is more compact, has no looseness, is easy to carry, and is low in cost. In this embodiment, the direction of the torsion spring 43 releasing the elastic force is exemplified by clockwise.

[0061] Furthermore, the rotation points of the swing arm 41 and the fixed part 22, the rotation points 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. 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. The effective length refers to the straight-line distance between the two rotation points. Moreover, the shape of the swing arm 41 and the push rod 42 is not limited to a long strip shape, but can also be an ellipse or a disk, etc., designed according to the specific spatial arrangement.

[0062] Optionally, the surface of the retention needle 32 is provided with a flange 33, and the inner wall of the puncture 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 puncture port 11, and the flange 33 cooperates with the buckle 23, so that the retention needle 32 is fixedly connected to the puncture port 11. This achieves the retention of the retention needle 32 after the puncture needle 31 has been withdrawn after puncture, without the need for additional operation. The entire process is continuous. See details. Figure 4 , Figure 6 and Figure 8 It's faster and less painful.

[0063] Optionally, the limiting member 5 is provided with a first limiting part 51 and a second limiting part 52. Before the excitation component 6 is excited, the first limiting part 51 is limited by the excitation component 6, so that the limiting member 5 cannot rotate and remains at the first angle. The second limiting part 52 blocks the sliding member 3. See details. Figure 3 After being activated, the excitation component 6 releases its limiting effect on the first limiting part 51, the limiting member 5 rotates to the second angle, and the second limiting part 52 releases its blocking effect on the sliding member 3. See details. Figure 5 and Figure 7 .

[0064] Furthermore, the excitation assembly 6 includes an excitation element 61 located within the housing 2. The excitation element 61 and the sliding element 3 are distributed on both sides of the limiting element 5. A compression spring 62 is provided between one end of the excitation element 61 and the inner wall of the housing 2, and the other end of the excitation element 61 extends out of the housing 2 to form a pressing end 63. The excitation assembly 6 is excited by pressing the pressing end 63. An avoidance opening 64 is provided on the excitation element 61. Before the excitation assembly 6 is excited, the first limiting part 51 abuts against the side surface of the excitation element 61. See details. Figure 3After being activated, the first limiting part 51 of the activating component 6 can enter the clearance opening 64, realizing the rotation of the limiting member 5 from the first angle to the second angle, as detailed below. Figure 5 In addition, a protrusion 65 is provided on the side surface of the exciter 61. The protrusion 65 is used to limit the upper stroke of the exciter 61 and prevent the exciter 61 from extending too far out of the housing 2 due to the elastic force of the compression spring 62.

[0065] Furthermore, the limiting member 5 is also provided with a third limiting part 53, and the housing 2 is provided with a stop 24. The stop 24 is used to limit the third limiting part 53 of the limiting member 5 when it is in the second angle, so as to prevent the limiting member 5 from continuing to rotate after it has rotated to the second angle. See details. Figure 7 .

[0066] Furthermore, after being activated, the activating component 61 moves towards the pressing end 63 under the elastic force of the compression spring 62, and the clearance opening 64 abuts against the first limiting part 51 to prevent the limiting member 5 from reversing from the second angle to the first angle. See details. Figure 7 .

[0067] Optionally, the housing 2 is also provided with an anti-accidental contact element 7, which can move from a third position to a fourth position. When the anti-accidental contact element 7 is in the third position, it abuts against the pressing end 63, thus limiting the movement of the actuating element 61. See details. Figure 9 When the anti-accidental contact element 7 is in the fourth position, the anti-accidental contact element 7 avoids the pressing end 63 to release the limiting effect on the actuating element 61.

[0068] In this embodiment, the position switching method of the anti-accidental touch component 7 is sliding, but it is not limited to this. It can also be pressing, etc. The setting position of the anti-accidental touch component 7 is not limited to the top of the housing 2, but can also be on the side surface of the housing 2.

[0069] In addition, the sliding member 3 is detachably connected to the needle seat of the puncture needle 31, realizing the function of replacing the puncture needle 31; the housing 2 and internal structure can be reused after replacing the new puncture needle 31, and only the used puncture needle 31 needs to be discarded, which can save on usage costs.

[0070] The following example, using insulin injection for diabetic patients, details the process of using insulin:

[0071] 1) Before use, the patient should first apply the base 1 to the area where the needle needs to be applied, and then assemble the unactivated shell 2 onto the base 1.

[0072] 2) Before the patient activates the activation component 6, the anti-accidental activation component 7 needs to be activated to unlock the movement of the activation component 6. At this time, the limiting component 5 is in the first angle, the first limiting part 51 of the limiting component 5 abuts against the activation component 61, and the second limiting part 52 of the limiting component 5 limits the sliding component 3. See details.Figure 3 and Figure 4 ;

[0073] 3) After the patient presses the pressing end 63 of the trigger 61, the rotatable space of the limiting member 5 is opened. Under the action of the torsion spring 43 driving the swing arm 41 and the push rod 42, the sliding member 3 drives the puncture needle 31 and the indwelling needle 32 to move downward. The puncture needle 31 performs the function of puncturing the skin. At this time, the second limiting part 52 of the limiting member 5 is pushed open by the sliding member 3, the limiting member 5 rotates to the second angle, and the sliding member 3 moves to the first position, that is, the puncture reaches the correct position. At the same time, the indwelling needle 32 is fixed by the inverted buckle 23 on the base 1. See details. 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, pulling the slider 3 upwards along with the puncture needle 31. The puncture needle 31 retracts into the housing 2, and the retention needle 32 is fixed on the base 1. See details. Figure 7 and Figure 8 ;

[0075] 5) Remove the housing 2 and the base 1 to assemble the corresponding insulin pump. After the infusion tubing of the insulin pump is connected to the indwelling needle 32, a small amount of insulin can be injected into the patient as needed.

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

[0077] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A needle aid for a patch-type insulin pump, characterized in that, It includes a base (1), a housing (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 to apply to the position where acupuncture is required, and the base (1) is provided with acupuncture holes (11); 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 slider (3) to approach the needle puncture port (11) to a first position and away from the needle puncture port (11) to a second position. When the slider (3) is in the first position, the puncture needle (31) and the retention needle (32) pass through the base (1) from the needle puncture port (11), and the retention needle (32) is locked with the needle puncture port (11). When the slider (3) is in the second position, the puncture needle (31) retracts into the housing (2). The limiting member (5) is rotatably disposed in the housing (2) and located on one side of the sliding member (3); The excitation component (6) is used to prevent the limiting member (5) from rotating before being excited and to allow the limiting member (5) to rotate from a first angle to a second angle after being excited. When the limiting member (5) is at the first angle, the limiting member (5) blocks the sliding member (3) from reaching the first position. When the limiting member (5) is at the second angle, the limiting member (5) releases its blocking effect on the sliding member (3).

2. The needle aid for the patch-type insulin pump according to claim 1, characterized in that, A guide groove (21) is provided on the inner wall of the housing (2), and the sliding member (3) is embedded in the guide groove (21). A fixing part (22) is provided on the housing (2) on the side of the sliding member (3) away from the needle puncture port (11). One end of the energy storage component (4) is connected to the fixing part (22), and the other end of the energy storage component (4) is connected to the sliding member (3).

3. The needle aid for the patch-type insulin pump according to claim 2, characterized in that, The energy storage component (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 pivot 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.

4. The needle aid for the patch-type insulin pump according to claim 3, characterized in that, The rotation points of the swing arm (41) and the fixed part (22), the rotation points 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 aid for the patch-type 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 needle hole (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 needle hole (11) and the flange (33) cooperates with the buckle (23), so that the retention needle (32) is fixedly connected to the needle hole (11).

6. The needle aid for the patch-type insulin pump according to claim 1, characterized in that, The limiting member (5) is provided with a first limiting part (51) and a second limiting part (52), wherein: Before the excitation component (6) is excited, the first limiting part (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 part (52) blocks the sliding member (3); After being excited, the excitation component (6) releases its limiting effect on the first limiting part (51), the limiting member (5) rotates to the second angle, and the second limiting part (52) releases its blocking effect on the sliding member (3).

7. The needle aid for a patch-type insulin pump according to claim 6, characterized in that, The excitation assembly (6) includes an excitation element (61) located inside the housing (2). The excitation element (61) and the sliding element (3) are distributed on both sides of the limiting element (5). A compression spring (62) is provided between one end of the excitation element (61) and the inner wall of the housing (2). The other end of the excitation element (61) extends out of the housing (2) to form a pressing end (63). The excitation assembly (6) is excited by pressing the pressing end (63). An avoidance opening (64) is provided on the excitation element (61). Before the excitation component (6) is excited, the first limiting part (51) abuts against the side surface of the excitation member (61); After the excitation component (6) is excited, the first limiting part (51) can enter the clearance opening (64) to realize that the limiting member (5) can be rotated from the first angle to the second angle.

8. The needle aid for a patch-type insulin pump according to claim 7, characterized in that, The limiting member (5) is also provided with a third limiting part (53), and the housing (2) is provided with a stop (24). The stop (24) is used to limit the third limiting part (53) of the limiting member (5) when it is in the second angle, so as to restrict the limiting member (5) from continuing to rotate after it turns to the second angle.

9. The needle aid for a patch-type 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 clearance opening (64) abuts against the first limiting part (51) to restrict the limiting member (5) from reversing from the second angle to the first angle.

10. The needle aid for a patch-type insulin pump according to claim 7, characterized in that, The housing (2) is provided with an anti-accidental contact element (7), which can be moved from a third position to a fourth position, wherein: When the anti-accidental contact component (7) is in the third position, the anti-accidental contact component (7) abuts against the pressing end (63) to limit the activation component (61); When the anti-accidental contact member (7) is in the fourth position, the anti-accidental contact member (7) avoids the pressing end (63) to release the limiting effect on the trigger member (61).

Images