Needle assisting device and medical device

Abstract

The utility model provides a needle assisting device and a medical device.The needle assisting device comprises a protective cap, a protective spring, a top shell, a shell, a working unit, a bottom plate and a side pressing triggering structure, the protective cap is located on the top shell, and the protective spring is located between the protective cap and the top shell; the top shell, the outer shell and the bottom plate are combined to form a containing cavity, and the working unit is located in the containing cavity and used for executing the needle planting action; at least one part of the side pressing trigger structure is positioned in the accommodating cavity, and at least one part is positioned on the side of the shell; when the protective cap is pressed downwards and the side pressing trigger structure is pressed towards the inner side, the working unit is triggered to execute a needle planting action. Due to the fact that downward pressing and inward pressing are needed at the same time when needle planting is triggered, the part above the bottom plate of the needle assisting device can be stabilized, and the part and the bottom plate are not prone to skewing; implantation failure caused by the fact that the bottom plate is lifted away from the skin can be prevented; and the probability of causing unexpected false triggering is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a needle assisting device and a medical device. BACKGROUND

[0002] Insulin is a hormone that can lower blood sugar, while promoting glycogen, fat, protein synthesis. Exogenous insulin is mainly used to treat diabetes. The patch type insulin pump needs to inject the drug solution into the user's body smoothly and reliably through the subcutaneous implantation of the pipeline, and the subcutaneously implanted pipeline needs to be implanted into the user's body by the needle assisting system and fixed safely and reliably. The needle assisting system of the prior art can refer to patent CN116159206A, which mainly includes a bottom plate, a needle assisting assembly, a subcutaneously implanted pipeline, etc.

[0003] In the needle assisting system of the prior art, the needle assisting button is usually arranged on the side of the shell, and the needle implanting action is triggered by lateral pressing. Such button design has at least the following disadvantages: when the force of the side pressing button is too large, the needle assisting device as a whole may be pushed to be skewed; the bottom plate is lifted away from the skin, resulting in implantation failure; the triggering method is too simple, and in some cases, it is easy to be accidentally collided to be undesirably triggered. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application provides a needle assisting device and a medical device, which can solve the above-mentioned existing technical problems. The present application provides the following technical solutions:

[0005] A needle assisting device, comprising: a protective cap, a protective spring, a top shell, a shell, a working unit, a bottom plate and a side pressing triggering structure, characterized in that the protective cap is located above the top shell, and the protective spring is located between the protective cap and the top shell; the top shell, the shell and the bottom plate are combined to form a containing cavity, the working unit is located in the containing cavity, and the working unit is used to execute a needle implanting action; at least a part of the side pressing triggering structure is located in the containing cavity, and at least a part is located on the side of the shell; when the protective cap is pressed downward and the side pressing triggering structure is pressed inward, the working unit is triggered to execute the needle implanting action.

[0006] Optionally, the working unit comprises a puncture needle seat, an implant seat, a puncture needle, a retention needle, an implant spring and a needle withdrawal spring, wherein: the puncture needle seat is detachably connected with the implant seat, the puncture needle seat is coupled with the implant seat when implanting the needle, and the puncture needle seat is decoupled from the implant seat when withdrawing the needle; the puncture needle is fixedly connected below the puncture needle seat, the retention needle is detachably fixed below the implant seat, and the puncture needle penetrates the retention needle; the implant spring is located between the top shell and the implant seat, the implant spring is in a compressed state before implanting the needle, and the implant spring is released and pushes the puncture needle seat, the implant seat, the puncture needle and the retention needle to move downward when implanting the needle; the bottom plate comprises a bottom plate through hole and a bottom plate buckle, and the bottom plate buckle is used for clamping the retention needle; the needle withdrawal spring is located between the implant seat and the puncture needle seat, the needle withdrawal spring is in a compressed state before withdrawing the needle, and the needle withdrawal spring is released and pushes the puncture needle seat and the puncture needle to move upward when withdrawing the needle.

[0007] Optionally, the puncture needle seat comprises a side wing hook, the bottom of the side wing hook has a first inclined surface; the implant seat comprises a side wall clamping hole capable of matching the side wing hook; the shell comprises a bottom stand column, the top of the bottom stand column has a second inclined surface matched with the first inclined surface; the side wing hook and the side wall clamping hole are used for realizing the coupling of the puncture needle seat and the implant seat; and the bottom stand column is used for assisting the decoupling of the puncture needle seat and the implant seat.

[0008] Optionally, the side press trigger structure comprises N outer implant keys and N inner implant keys, and the shell comprises N implant key holes, wherein N is a positive integer; the N outer implant keys are arranged on the outer side wall of the protective cap; the N inner implant keys are arranged on the outer side wall of the implant seat; before triggering, the N inner implant keys are embedded in the N implant key holes to realize the coupling of the implant seat and the shell; after triggering, the N outer implant keys move downward to the outer side of the N inner implant keys, and the N outer implant keys and the N inner implant keys jointly move inward to make the N inner implant keys out of the N implant key holes to realize the decoupling of the implant seat and the shell.

[0009] Optionally, N is 2 to 4.

[0010] Optionally, the inner diameter of the shell below the height of the implant key hole is greater than the inner diameter of the shell at the height of the implant key hole.

[0011] Optionally, the side press trigger structure comprises a horizontal block, a key wall and a side key which are sequentially connected, the horizontal block comprises a locking part and a channel part; the top shell comprises a horizontal slot for inserting the horizontal block, the implant seat comprises an upward clamping hook, and the shell comprises a side key hole matched with the side key; when neither the protective cap nor the side key is pressed, the horizontal block is located at a first position, and the upward clamping hook is locked by the locking part; when the protective cap is pressed downward and the side key is pressed inward, the horizontal block is located at a second position, the upward clamping hook is out of the locking part and passes through the channel part downward.

[0012] Optionally, the horizontal block and the key wall are arranged as an integrated structure.

[0013] Optionally, a dummy key is further included, which is arranged on the shell and opposite to the position of the side key hole.

[0014] A medical device includes an insulin pump and the needle helper of the present application.

[0015] In the technical solution of the present application, the trigger gesture can stabilize the upper part of the needle helper bottom plate, so that it is not easy to be skewed with the bottom plate; it can prevent the bottom plate from being lifted away from the skin and causing implant failure; and the probability of causing unexpected false triggering is small. BRIEF DESCRIPTION OF DRAWINGS

[0016] For the purpose of illustration and not limitation, the present application will now be described according to the preferred embodiments of the present application, in particular with reference to the accompanying drawings, in which:

[0017] Figure 1 is a cross-sectional view of the needle helper according to the first example embodiment of the present application;

[0018] Figure 2A is a perspective view of the protective cap in the needle helper according to the first example embodiment of the present application Figure 1 ;

[0019] Figure 2B is a perspective view of the protective cap in the needle helper according to the first example embodiment of the present application

[0020] Figure 3A is a perspective view of the top shell in the needle helper according to the first example embodiment of the present application Figure 1 ;

[0021] Figure 3B is a perspective view of the top shell in the needle helper according to the first example embodiment of the present application

[0022] Figure 4A is a perspective view of the shell in the needle helper according to the first example embodiment of the present application Figure 1 ;

[0023] Figure 4B is a perspective view of the shell in the needle helper according to the first example embodiment of the present application

[0024] Figure 5A is a perspective view of the puncture needle seat in the needle helper according to the first example embodiment of the present application Figure 1 ;

[0025] Figure 5Bis a perspective view of a piercing needle seat in a needle helper according to the first example embodiment of the present application;

[0026] Figure 6A is a perspective view of an implant seat in a needle helper according to the first example embodiment of the present application Figure 1 ;

[0027] Figure 6B is a perspective view of an implant seat in a needle helper according to the first example embodiment of the present application

[0028] Figure 7 is a perspective view of a bottom plate in a needle helper according to the first example embodiment of the present application;

[0029] Figure 8 is a partial sectional view of an implant seat coupled with a piercing needle seat in a needle helper according to the example embodiment of the present application;

[0030] Figure 9 is a partial sectional view of an implant seat decoupled from a piercing needle seat in a needle helper according to the example embodiment of the present application;

[0031] Figures 10A to 10F is a process diagram of a method of using a needle helper according to the first example embodiment of the present application.

[0032] Figure 11 is a sectional view of a needle helper according to the second example embodiment of the present application;

[0033] Figure 12A is a perspective view of a protective cap in a needle helper according to the second example embodiment of the present application Figure 1 ;

[0034] Figure 12B is a perspective view of a protective cap in a needle helper according to the second example embodiment of the present application

[0035] Figure 13A is a perspective view of a top shell in a needle helper according to the second example embodiment of the present application Figure 1 ;

[0036] Figure 13B is a perspective view of a top shell in a needle helper according to the second example embodiment of the present application

[0037] Figure 14A is a perspective view of an outer shell in a needle helper according to the second example embodiment of the present application Figure 1 ;

[0038] Figure 14B is a perspective view of an outer shell in a needle helper according to the second example embodiment of the present application

[0039] Figure 15A is a perspective view of a puncture needle seat in a needle helper according to the second example embodiment of the present application Figure 1 ;

[0040] Figure 15B is a perspective view of a puncture needle seat in a needle helper according to the second example embodiment of the present application

[0041] Figure 16A is a perspective view of an implant seat in a needle helper according to the second example embodiment of the present application Figure 1 ;

[0042] Figure 16B is a perspective view of an implant seat in a needle helper according to the second example embodiment of the present application

[0043] Figure 17 is a perspective view of a bottom plate in a needle helper according to the second example embodiment of the present application

[0044] Figure 18 is a perspective view of an integrated horizontal block and key wall in a needle helper according to the second example embodiment of the present application

[0045] Figure 19 is a perspective view of a side key in a needle helper according to the second example embodiment of the present application

[0046] Figures 20A to 20G is a process diagram of a method for using a needle helper according to the second example embodiment of the present application

[0047] In the drawings:

[0048] Safety cap 1, outer implant key 103, top shell 2, horizontal slot 201, outer shell 3, bottom stand 301, second slope 3011, implant key hole 302, side key hole 303, puncture needle seat 4, side wing hook 401, first slope 4011, implant seat 5, side wall hook hole 501, inner implant key 502, upper extension hook 503, puncture needle 6, indwelling needle 7, implant spring 801, needle withdrawal spring 802, bottom plate 9, bottom plate through hole 901, bottom plate buckle 902, horizontal block 40, locking portion 4001, channel portion 4002, key wall 50, side key 60. DETAILED DESCRIPTION

[0049] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0050] In the description of the present application, the side defined as close to the skin is described as "bottom" or "under"; the side defined as away from the skin is described as "top" or "above". It should be noted that, unless otherwise explicitly specified and limited, the terms "mount", "connect" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] The needle helper according to the example embodiment of the present application can include a protective cap 1, a protective spring 800, a top shell 2, an outer shell 3, a working unit, a bottom plate 9, and a side-press trigger structure. The protective cap 1 is located above the top shell 2, and the protective spring 800 is located between the protective cap 1 and the top shell 2. The top shell 2, the outer shell 3, and the bottom plate 9 combine to form a containing cavity, and the working unit is located in the containing cavity and is used to perform a needle implantation action. At least a part of the side-press trigger structure is located in the containing cavity, and at least a part is located on the side of the outer shell. When the protective cap 1 is pressed downward and the side-press trigger structure is pressed inward, the working unit is triggered to perform the needle implantation action.

[0052] The needle helper according to the example embodiment of the present application, since the protective cap and the side-press trigger structure need to be pressed downward and inward respectively to trigger the needle implantation, the trigger gesture can stabilize the part above the bottom plate of the needle helper, so that it is not easy to be tilted with the bottom plate; it can prevent the bottom plate from being lifted off the skin and causing implantation failure; and the probability of causing unexpected false triggering is small.

[0053] Figure 1 is a cross-sectional view of a needle helper according to the first example embodiment of the present application, as Figure 1 shown, the needle helper according to the first example embodiment of the present application mainly includes a protective cap 1, a protective spring 800, a top shell 2, an outer shell 3, a working unit, a bottom plate 9, and a side-press trigger structure. The working unit mainly includes a puncture needle seat 4, an implantation seat 5, a puncture needle 6, a retention needle 7, an implantation spring 801, and a needle withdrawal spring 802.

[0054] The protective cap 1 is formed as a cap shape as a whole, as shown in Figure 2A and 2B , and is arranged above the top shell 2 to play a protective role. The top shell 2 is formed as a disc shape as a whole, as shown in Figure 3A and 3B . The protective spring 800 is located between the protective cap 1 and the top shell 2. The outer shell 3 is formed as a disc shape as a whole, as shown in Figure 4A and Figure 4BAs shown, the overall structure is cylindrical. The top shell 2, outer shell 3, and bottom plate 9 combine to form a receiving cavity. The puncture needle seat 4 is as follows... Figure 5A and Figure 5B As shown, it is formed into a cylindrical shape overall. The implant base 5 is as follows... Figure 6A and Figure 6B As shown, the overall structure is cylindrical. The puncture needle seat 4, implantation seat 5, puncture needle 6, indwelling needle 7, implantation spring 801, and withdrawal spring 802 are located within the receiving cavity. The puncture needle seat 4 can be located above the implantation seat 5; however, this is only an example and not a limitation. The puncture needle seat 4 and implantation seat 5 are detachably connected. During needle insertion, the puncture needle seat 4 is coupled to the implantation seat 5; during needle withdrawal, the puncture needle seat 4 is disengaged from the implantation seat 5. The puncture needle 6 is fixedly connected below the puncture needle seat 4, and the indwelling needle 7 is detachably fixed below the implantation seat 5, with the puncture needle 6 penetrating the indwelling needle 7. The implantation spring 801 is located between the top shell 2 and the implantation seat 5. Before needle insertion, the implantation spring 801 is compressed; during needle insertion, the implantation spring 801 is released and pushes the puncture needle seat 4, implantation seat 5, puncture needle 6, and indwelling needle 7 downwards. The base plate 9 is as follows... Figure 7 As shown, the overall structure is square-shaped. The base plate 9 mainly includes a base plate through hole 901 and a base plate buckle 902. When the needle is inserted to the bottom, the base plate buckle 902 is used to hold the indwelling needle 7. The needle withdrawal spring 802 is located between the implantation seat 5 and the puncture needle seat 4. Before needle withdrawal, the needle withdrawal spring 802 is in a compressed state. When the needle is withdrawn, the needle withdrawal spring 802 is released and pushes the puncture needle seat 4 and the puncture needle 6 upward.

[0055] Figure 8 The image shows the coupling between the implantation seat 5 and the puncture needle seat 4, i.e., the state before needle withdrawal. Figure 9 This illustrates the separation of the implantation port 5 from the puncture needle port 4, indicating an imminent needle withdrawal. Figure 8 and Figure 9 As shown, the puncture needle hub 4 includes a side wing hook 401, the bottom of which has a first inclined surface 4011; the implantation seat 5 includes a side wall locking hole 501 that can match the side wing hook 401; the outer shell 3 includes a bottom post 301, the top of which has a second inclined surface 3011 that matches the first inclined surface 4011; the side wing hook 401 and the side wall locking hole 501 are used to couple the puncture needle hub 4 and the implantation seat 5; the bottom post 301 is used to assist in the dissociation of the puncture needle hub 4 and the implantation seat 5. The specific process of this coupling / dissociation is explained as follows: before needle withdrawal... Figure 8 As shown, the side wing hook 401 is inserted into the side wall locking hole 501 to achieve coupling between the puncture needle seat 4 and the implant seat 5. During needle implantation, the puncture needle seat 4 and the implant seat 5 remain coupled and move downward together. When the puncture needle seat 4 moves to a sufficiently low position, the first inclined surface 4011 at the bottom of the side wing hook 401 contacts and interacts with the second inclined surface 3011 of the bottom post 301, as shown.Figure 9 The interaction is that the first inclined surface 4011 is forced to contract inward and slide downward because the second inclined surface 3011 remains stationary. At this time, the side wing catch 401 is deformed and released from the side wall catch hole 501 to achieve the disengagement of the puncture needle seat 4 and the implant seat 5. After that, the puncture needle seat 4 moves upward under the elastic force of the needle withdrawal spring 802, that is, the automatic needle withdrawal action is performed.

[0056] As shown in FIG. 1, the needle helper according to the first example embodiment of the present application includes a protection cap 1, a shell 3, a puncture needle seat 4, a puncture needle 6, a retention needle 7, an implant seat 5, a needle implant spring 801, a needle withdrawal spring 802, and a needle helper spring 803. Figure 1 As shown in FIG. 1, the needle helper according to the first example embodiment of the present application includes a protection cap 1, a shell 3, a puncture needle seat 4, a puncture needle 6, a retention needle 7, an implant seat 5, a needle implant spring 801, a needle withdrawal spring 802, and a needle helper spring 803.

[0057] Before triggering, the N inner implant keys 502 are embedded in the N implant key holes 302 to achieve the coupling of the implant seat 5 and the shell 3. After triggering, that is, when the protection cap 1 is pressed downward and the side press triggering structure is pressed inward, the N outer implant keys 103 move downward to the outer side of the N inner implant keys 502, and the N outer implant keys 103 and the N inner implant keys 502 move inward together to make the N inner implant keys 502 released from the N implant key holes 302 to achieve the disengagement of the implant seat 5 and the shell 3. After the disengagement, the implant seat 5 moves downward under the action of the needle implant spring 801, and drives the puncture needle seat 4, the puncture needle 6, and the retention needle 7 to move downward, that is, the needle implant action is performed.

[0058] According to the needle helper of the first example embodiment of the present application, the protection cap 1 needs to be pressed downward and the N side press positions need to be pressed inward to trigger the needle implant, and each side press position has an outer implant key 103 and an inner implant key 502. For the convenience of use, it is preferred that N is 2, 3, or 4, and N is too large to be difficult to operate. It should be noted that, Figure 1 N=2 is taken as an example in the description, but this is only an example and not a limitation.

[0059] According to the needle helper of the first example embodiment of the present application, the inner diameter of the shell below the height of the implant key hole 302 can be greater than the inner diameter of the shell at the height of the implant key hole 302. This means that after the inner implant key 502 of the implant seat 5 is released from the implant key hole 302 of the shell 3, there is more spacious space below for the implant seat 5 to move downward smoothly to achieve the needle implant.

[0060] According to the second example embodiment of the present application, the shell 3 and the bottom plate 9 are coupled or decoupled by relative rotation. In addition, the needle helper can further include a rotation stopping structure (not shown in the figure) for preventing undesired decoupling between the shell 3 and the bottom plate 9. The rotation stopping structure can be a pin, a buckle or the like structure, realizing switching between locking rotation and unlocking rotation.

[0061] The method for using the needle helper according to the first example embodiment of the present application has the advantages of less operation steps, simple and easy to use, stable and reliable, and less prone to mis-triggering. In order to facilitate understanding, the following will be described in detail in combination with Figures 10A to 10F the accompanying drawings.

[0062] In the needle helper, the implant buttons are divided into inner implant buttons 502 (integrally designed with the implant seat 5) and outer implant buttons 103 (integrally designed with the protective cap 1). Before use, the inner implant buttons 502 are protected inside the protective cap 1 to prevent unintended mis-triggering. When using, as shown in Figure 10A , the protective cap 1 is pressed downward and the implant buttons on both sides (including the outer implant buttons 103 and the inner implant buttons 502) are pressed at the same time to trigger the needle helper. As shown in Figure 10B , the protective cap 1 is first moved downward, so that the outer implant buttons 103 are moved downward to the same height as the inner implant buttons 502. Then as shown in Figure 10C , the outer implant buttons 103 and the inner implant buttons 502 jointly receive lateral pressure and are folded inward. As shown in Figure 10D , a pair of inner implant buttons 502 are separated from a pair of implant button holes 302, completing the release of the implant seat 5, which moves downward under the action of the implant spring 802, and the puncture needle seat 4, the puncture needle 6 and the indwelling needle 7 move downward together, i.e. the needle implanting action is performed. After the needle implanting is completed, as shown in Figure 10E , the implant seat 5 is decoupled from the puncture needle seat 4, which moves upward under the action of the needle withdrawal spring 802. After the needle withdrawal is completed, the shell 3 and the bottom plate 9 are separated. If the shell 3 and the bottom plate 9 in the needle helper are detachably and rotatably connected, as shown in Figure 10F , relative rotation is performed to decouple.

[0063] It should be noted that initially the implant seat 5 and the indwelling needle 7 are connected. However, after the needle implanting is completed, the indwelling needle 7 moves to the lowest position and is fixed by the bottom plate buckle 902. Since the connection between the indwelling needle 7 and the bottom plate buckle 902 is stronger, when the part above the bottom plate 9 is removed, the indwelling needle 7 remains in the bottom plate 9, and the implant seat 5 and the indwelling needle 7 are decoupled.

[0064] Figure 11 is a cross-sectional view of the needle helper according to the second example embodiment of the present application, as shown in Figure 1As shown, the needle assist device according to the second exemplary embodiment of this application mainly includes: a protective cap 1, a protective spring 800, a top shell 2, a outer shell 3, a working unit, a base plate 9, and a side-press trigger structure. The working unit mainly includes a puncture needle seat 4, an implantation seat 5, a puncture needle 6, an indwelling needle 7, an implantation spring 801, and a needle withdrawal spring 802.

[0065] Protective cap 1 Figure 12A and 12B As shown, it is generally shaped like a cap and is positioned on top of the top shell 2 to provide protection. The top shell 2 is as follows... Figure 13A and 13B As shown, it is generally formed in a disc shape. The protective spring 800 is located between the protective cap 1 and the top shell 2. The outer shell 3 is as follows... Figure 14A and Figure 14B As shown, the overall structure is cylindrical. The top shell 2, outer shell 3, and bottom plate 9 combine to form a receiving cavity. The puncture needle seat 4 is as follows... Figure 15A and Figure 15B As shown, it is formed into a cylindrical shape overall. The implant base 5 is as follows... Figure 16A and Figure 16B As shown, the overall structure is cylindrical. The puncture needle seat 4, implantation seat 5, puncture needle 6, indwelling needle 7, implantation spring 801, and withdrawal spring 802 are located within the receiving cavity. The puncture needle seat 4 is located above the implantation seat 5, and the puncture needle seat 4 and implantation seat 5 are detachably connected. During needle implantation, the puncture needle seat 4 is coupled to the implantation seat 5; during needle withdrawal, the puncture needle seat 4 is disengaged from the implantation seat 5. The puncture needle 6 is fixedly connected below the puncture needle seat 4, and the indwelling needle 7 is detachably fixed below the implantation seat 5, with the puncture needle 6 penetrating the indwelling needle 7. The implantation spring 801 is located between the top shell 2 and the implantation seat 5. Before needle implantation, the implantation spring 801 is compressed; during needle implantation, the implantation spring 801 is released and pushes the puncture needle seat 4, implantation seat 5, puncture needle 6, and indwelling needle 7 downwards. The base plate 9 is as follows... Figure 17 As shown, the device is generally formed in a square shape. The base plate 9 mainly includes a base plate through hole 901 and a base plate buckle 902. When the needle is inserted to the bottom, the base plate buckle 902 is used to hold the indwelling needle 7. The needle withdrawal spring 802 is located between the implantation seat 5 and the puncture needle seat 4. The needle withdrawal spring 802 is in a compressed state before needle withdrawal. When the needle is withdrawn, the needle withdrawal spring 802 is released and pushes the puncture needle seat 4 and the puncture needle 6 upward. In the needle aid device according to the second exemplary embodiment of this application, the coupling / disengagement of the implantation seat 5 and the puncture needle seat 4 can be found in [reference needed]. Figure 8 and Figure 9 And the relevant descriptions mentioned above will not be repeated here.

[0066] like Figure 11As shown, in the needle helper according to the second example embodiment of the present application, the side pressing trigger structure mainly comprises, in sequence: the horizontal block 40, the pressing wall 50 and the side pressing key 60. The horizontal block 40 comprises the locking part 4001 and the passage part 4002. The top shell 2 comprises the horizontal slot 201 for inserting the horizontal block 40; the implant seat 5 comprises the upward hook 503; and the outer shell 3 comprises the side pressing key hole 303 matching the side pressing key 60. Before triggering, i.e. when the protective cap 1 and the side pressing key 60 are not pressed, the horizontal block 40 is in the first position, and the upward hook 503 is locked by the locking part 4001. When triggering, i.e. when the protective cap 1 is pressed downward and the side pressing key 60 is pressed inward, the horizontal block 40 is in the second position, the upward hook 503 is released from the locking part 4001 and passes through the passage part 4002 downward. Then the implant seat 5 is released and moves downward under the action of the implant spring 801, i.e. the needle helper performs the implanting action. It should be noted that between the first position and the second position, only pressing the side pressing key 60 to pull the pressing wall 50 and then pull the horizontal block 40 to move rightward causes the difference in horizontal coordinates.

[0067] In the needle helper according to the second example embodiment of the present application, the horizontal block 40 and the pressing wall 50 can be arranged as an integrated structure as shown. Figure 18 In this way, the number of parts can be reduced, and the assembly process can be simplified. The side pressing key 60 can have a small and compact shape as shown. Figure 19

[0068] The needle helper according to the second example embodiment of the present application can further comprise a dummy pressing key arranged on the outer shell 3 and opposite the side pressing key hole 303. The dummy pressing key is used to guide the user to the force application position, so that the user can perform the side pressing operation more accurately and evenly.

[0069] In the needle helper according to the second example embodiment of the present application, the outer shell 3 and the bottom plate 9 are coupled or decoupled by relative rotation. In addition, the needle helper can further comprise a rotation stopping structure (not shown in the figure), which is used to prevent undesired decoupling between the outer shell 3 and the bottom plate 9. The rotation stopping structure can be a pin, a buckle or the like structure, which realizes the switching between the locked state of being unable to rotate and the unlocked state of being able to rotate.

[0070] The method for using the needle helper according to the second example embodiment of the present application has the advantages of fewer operation steps, simple and easy to use, stability and reliability, and less mis-triggering. In order to facilitate understanding, the following will be described in detail. Figures 20A to 20G

[0071] In the needle helper, the implant seat 5 has two upward hooks 503, and the horizontal block 40 is arranged. Before use, the two upward hooks 503 are hooked on the horizontal block 40, and part of the protective cap 1 is pressed against the horizontal block 40 to limit the horizontal movement of the horizontal block 40, thereby preventing mis-triggering. When in use, as shown in​​Figure 20A As shown, the protector cap 1 is pressed down and the side button 60 on the side of the housing 3 is pressed in at the same time to trigger the needle helper. As shown, Figure 20B As shown, the protector cap 1 is pressed down first, and the protector cap 1 moves down to be unlocked, which takes a very short time. As shown, Figure 20C As shown, then the protector cap 1 and the side button 60 are pressed at the same time, the side button 60 moves right and then pulls the horizontal block 40 to move right through the button wall 50. Before the right movement, as shown, Figure 20B As shown, the upper extension hook 503 of the implant seat 5 is locked by the locking part 4001; after the right movement, as shown, Figure 20D As shown, the passage part 4002 on the horizontal block 40 is opened, the upper extension hook 503 is released from the locking part 4001 and is about to pass through the passage part 4002 downward under the action of the implant needle spring 801. As shown, Figure 20E As shown, the implant seat 5 moves downward and the puncture needle seat 4, the puncture needle 6 and the indwelling needle 7 move downward together to the lowest position, i.e. the implanting is completed. As shown, Figure 20F As shown, the implant seat 5 is separated from the puncture needle seat 4, and the puncture needle seat 4 moves upward under the action of the withdrawal needle spring 802. After the withdrawal is completed, the housing 3 and the bottom plate 9 are separated. If the housing 3 and the bottom plate 9 in the needle helper are detachably and rotatably connected, as shown, Figure 20G As shown, the relative rotation is performed to separate.

[0072] It should be noted that initially the implant seat 5 and the indwelling needle 7 are connected. However, after the implanting is completed, the indwelling needle 7 moves to the lowest position and is fixed by the bottom plate buckle 902. Since the connection between the indwelling needle 7 and the bottom plate buckle 902 is stronger, when the part above the bottom plate 9 is finally removed, the indwelling needle 7 remains in the bottom plate 9, and the implant seat 5 and the indwelling needle 7 are separated.

[0073] The medical device of the example embodiment of the present application can include an insulin pump and the needle helper of the embodiment of the present application.

[0074] The above specific embodiments do not constitute a limitation on the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made depending on design requirements and other factors. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A needle aid comprising: The protective cap (1), the protective spring (800), the top shell (2), the outer shell (3), the working unit, the bottom plate (9) and the side press trigger structure are characterized in that, The protective cap (1) is located above the top shell (2), and the protective spring (800) is located between the protective cap (1) and the top shell (2); The top shell (2), the outer shell (3) and the bottom plate (9) combine to form a containing cavity, and the working unit is located in the containing cavity and is used to perform a needle implanting action; At least a part of the side press trigger structure is located in the containing cavity, and at least a part is located on the side of the outer shell; When the protective cap (1) is pressed downward and the side press trigger structure is pressed inward, the working unit is triggered to perform a needle implanting action.

2. The needle guide of claim 1, wherein The working unit comprises a puncture needle seat (4), an implanting seat (5), a puncture needle (6), a remaining needle (7), an implanting spring (801) and a needle withdrawing spring (802), wherein: The puncture needle seat (4) is detachably connected with the implanting seat (5), the puncture needle seat (4) is coupled with the implanting seat (5) during needle implanting, and the puncture needle seat (4) is decoupled from the implanting seat (5) during needle withdrawing; The puncture needle (6) is fixedly connected below the puncture needle seat (4), the remaining needle (7) is detachably fixed below the implanting seat (5), and the puncture needle (6) penetrates through the remaining needle (7); The implanting spring (801) is located between the top shell (2) and the implanting seat (5), the implanting spring (801) is in a compressed state before needle implanting, and the implanting spring (801) is released and pushes the puncture needle seat (4), the implanting seat (5), the puncture needle (6) and the remaining needle (7) to move downward during needle implanting; The bottom plate (9) comprises a bottom plate through hole (901) and a bottom plate buckle (902), and the bottom plate buckle (902) is used to clamp the remaining needle (7); The needle withdrawing spring (802) is located between the implanting seat (5) and the puncture needle seat (4), the needle withdrawing spring (802) is in a compressed state before needle withdrawing, and the needle withdrawing spring (802) is released and pushes the puncture needle seat (4) and the puncture needle (6) to move upward during needle withdrawing.

3. The needle helper according to claim 2, wherein, The puncture needle seat (4) comprises a side wing hook (401), and the bottom of the side wing hook (401) is provided with a first inclined surface (4011); The implanting seat (5) comprises a side wall clamping hole (501) capable of matching the side wing hook (401); The outer shell (3) comprises a bottom stand (301), and the top of the bottom stand (301) is provided with a second inclined surface (3011) matching the first inclined surface (4011); The side wing hook (401) and the side wall clamping hole (501) are used to realize the coupling of the puncture needle seat (4) and the implanting seat (5), and the bottom stand (301) is used to assist the decoupling of the puncture needle seat (4) and the implanting seat (5).

4. The needle helper according to claim 3, wherein, The side press trigger structure comprises N outer implanted buttons (103) and N inner implanted buttons (502), and the shell (3) comprises N implanted button holes (302), wherein N is a positive integer; The N outer implanted buttons (103) are arranged on the outer sidewall of the protective cap (1); The N inner implanted buttons (502) are arranged on the outer sidewall of the implanted seat (5); Before triggering, the N inner implanted buttons (502) are embedded in the N implanted button holes (302) to realize the coupling of the implanted seat (5) and the shell (3); After triggering, the N outer implanted buttons (103) move downward to the outer side of the N inner implanted buttons (502), and the N outer implanted buttons (103) and the N inner implanted buttons (502) move inward together to make the N inner implanted buttons (502) out of the N implanted button holes (302) to realize the decoupling of the implanted seat (5) and the shell (3).

5. The needle guide of claim 4, wherein, N is 2 to 4.

6. The needle guide of claim 4, wherein, The inner diameter of the shell below the height of the implanted button hole (302) is greater than the inner diameter of the shell at the height of the implanted button hole (302).

7. The needle helper according to claim 3, wherein, The side press trigger structure comprises a horizontal block (40), a button wall (50) and a side button (60) connected in sequence, and the horizontal block (40) comprises a locking part (4001) and a passage part (4002); The top shell (2) comprises a horizontal slot (201) for inserting the horizontal block (40), the implanted seat (5) comprises an upward hook (503), and the shell (3) comprises a side button hole (303) matching the side button (60); When the protective cap (1) and the side button (60) are not pressed, the horizontal block (40) is located at a first position, and the upward hook (503) is locked by the locking part (4001); When the protective cap (1) is pressed downward and the side button (60) is pressed inward, the horizontal block (40) is located at a second position, the upward hook (503) is separated from the locking part (4001) and passes downward through the passage part (4002).

8. The needle guide of claim 7, wherein, The horizontal block (40) and the button wall (50) are arranged as an integrated structure.

9. The needle guide of claim 7, wherein, A false button is further arranged on the shell (3) and opposite to the position of the side button hole (303).

10. A medical device, characterized by An insulin pump and the needle helper according to any one of claims 1 to 9.

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