Needle assisting device

Abstract

The utility model discloses a needle assisting device which comprises a main shell, a push rod, an emission spring and a locking switch structure, the main shell is provided with an inner pipe, the inner pipe is provided with a first protruding block, the push rod penetrates through the inner pipe and is provided with a sliding groove, one end of the push rod is used for assembling a dynamic blood glucose detection module, and the dynamic blood glucose detection module comprises a hard needle and a hard needle recovery spring. The launching spring abuts against the main shell and the push rod, the locking switch structure is used for completing the locking action and the unlocking action, the locking action is used for limiting reset of the launching spring after compression, the unlocking action is used for releasing the locking action, and when the launching spring is in a compressed state, the first protruding block directly or indirectly compresses the hard needle recovery spring; when the transmitting spring is reset, the first convex block relieves the compression on the hard needle recovery spring. When the transmitting spring is reset, the first protruding block moves away from the hard needle recovery spring, so that the hard needle is pushed to move in the direction away from the skin, and automatic recovery of the hard needle is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamic blood glucose meters, in particular to a needle assisting device. Background Art

[0002] A continuous blood glucose meter (CGM) is a medical device that monitors blood sugar levels over extended periods of time. The device's principle is to insert the probe of the CGM module subcutaneously into the subject's skin, where it chemically reacts with glucose in the interstitial fluid beneath the skin, generating an electronic signal. The monitoring system's recorder receives this electrical signal from the probe at regular intervals, obtaining a monitoring value. These multiple values are then averaged and converted into a stored blood sugar value. This device offers the advantage of generating a continuous, all-day blood sugar record, providing warnings and alerts for high or low blood sugar levels, and allowing for continuous use over multiple days without affecting exercise, bathing, or other activities.

[0003] A dynamic blood glucose meter generally includes a needle assist device and a dynamic blood glucose detection module. The dynamic blood glucose detection module includes a hard needle part and a soft needle part. The hard needle part is used to inject the soft needle of the soft needle part (i.e., the detection head) into the tester's body, and leave the soft needle in the tester's body to monitor blood glucose. In the dynamic blood glucose meter of the prior art, the needle assist device is one of its important components. The needle assist device generally only has a structure that cooperates with the function of emitting the hard needle, and does not have a structure that cooperates with the automatic recovery of the hard needle. This will cause the hard needle to follow the needle assist device to be picked up and pulled out of the tester's body, increasing the time the hard needle invades the tester's skin, which will bring more discomfort and pain. At the same time, the dynamic blood glucose meter is generally purchased and used by the tester himself, and he does not have the operating experience of medical staff. There is a risk of operating errors in the process of pulling out the hard needle, and even infection may occur. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art described above, the present invention provides a needle assisting device, which can solve the problem that the needle assisting device in the dynamic blood glucose meter does not have a structure for automatically recovering the hard needle.

[0005] The technical solution adopted by the present invention to solve the problem is:

[0006] A needle assist device, comprising:

[0007] A main shell, wherein an inner tube is provided in the main shell, and a first protrusion is provided on the inner wall of the inner tube;

[0008] a push rod, the push rod being arranged through the inner tube, the push rod being provided with a slide groove, the first protrusion being slidably arranged in the slide groove, one end of the push rod being used to assemble a dynamic blood glucose detection module, the dynamic blood glucose detection module comprising a hard needle and a hard needle recovery spring, the hard needle recovery spring being used to drive the hard needle to move in a direction away from the hard needle launch movement;

[0009] a launching spring, wherein the launching spring is arranged parallel to the setting direction of the slide slot, and one end of the launching spring abuts against the main housing, and the other end abuts against the push rod;

[0010] A locking switch structure, the locking switch structure is used to complete locking and unlocking actions, the locking action is to limit the return of the launch spring after compression, and the unlocking action is to release the locking action;

[0011] Wherein, when the launching spring is in a compressed state, the first protrusion directly or indirectly compresses the hard needle recovery spring to limit the release of elastic potential energy of the hard needle recovery spring. When the launching spring is reset, the first protrusion releases the compression of the hard needle recovery spring.

[0012] By adopting the above scheme, the main shell and the push rod are slidably connected through the cooperation of the first protrusion and the slide groove, the launching spring is arranged along the setting direction of the slide groove, and one end of the launching spring is against the main shell, and the other end is against the push rod. Through the relative movement of the main shell and the push rod, the compression energy storage or decompression energy release of the launching spring is completed. When the launching spring is in the compressed state, the hard needle recovery spring is directly or indirectly compressed, and the release of the elastic potential energy of the hard needle recovery spring is restricted. When the launching spring is reset, that is, the elastic potential energy of the launching spring is released, pushing the main shell and the push rod to reset. During the reset process In the process, the hard needle is inserted into the body of the tester, and at the same time that the first protrusion moves relative to the hard needle recovery spring assembled on the push rod, the hard needle recovery spring pushes the hard needle to move in the direction away from the tester's skin. Through the arrangement of the above structure, the needle assisting device has a structure for cooperating to complete the automatic recovery of the hard needle, thereby reducing the time the hard needle stays in the tester's skin, solving the problems such as increased discomfort and pain of the tester caused by the increased time the hard needle remains in the skin, and reducing the tester's operational errors caused by the removal of the hard needle, and even reducing the occurrence of infection problems.

[0013] Furthermore, one end of the push rod is connected to a pull cover.

[0014] By adopting the above solution, the pull cover facilitates the control of the push rod and facilitates the compression of the launch spring by pulling the pull cover.

[0015] Furthermore, the push rod is provided with an assembly hole parallel to the direction of the slide groove, the pull cover is provided with an ejection button assembly through hole corresponding to the assembly hole, an ejection button is passed through the ejection button assembly through hole, and a clamping structure is provided at the contact point between the assembly hole and the ejection button for clamping the dynamic blood glucose detection module.

[0016] By adopting the above solution, the dynamic blood glucose detection module is connected through the clamping structure provided by the ejection button, thereby facilitating the assembly of the dynamic blood glucose detection module.

[0017] Furthermore, the snap-fit structure includes a snap and a second protrusion, the snap is arranged on the inner wall of the assembly hole, the second protrusion is arranged on the ejection button, and the ejection button is slidably arranged in the assembly hole. During the movement of the ejection button toward the snap, the second protrusion can push the snap to undergo elastic deformation away from the center of the assembly hole, so as to be used to disengage the dynamic blood glucose detection module.

[0018] By adopting the above solution, the clip is arranged on the inner wall of the assembly hole to facilitate the clamping and fixing of the dynamic blood glucose detection module. The second protrusion is arranged on the ejection button. By pressing the ejection button, the dynamic blood glucose detection module remaining in the assembly hole is ejected, completing the complete separation of the needle assisting device and the dynamic blood glucose detection module, thereby facilitating the reuse of the needle assisting device.

[0019] Furthermore, a reset elastic member is assembled in the ejection button to reset the ejection button after sliding.

[0020] By adopting the above solution, the resetting elastic member facilitates the rebound of the ejection button after being pressed, so as to quickly reset the ejection button.

[0021] Furthermore, a second baffle is provided in the assembly hole, and the second baffle divides the assembly hole into a first assembly hole and a second assembly hole. The ejection button is provided in the first assembly hole, and the second baffle is provided with an avoidance hole for the second protrusion to pass through. The buckle is at least partially located in the second assembly hole. The second assembly hole is used to assemble the dynamic blood glucose detection module. The reset elastic member is an ejection spring, and one end of the ejection spring is against the ejection button, and the other end is against the second baffle.

[0022] By adopting the above solution, when the reset elastic member adopts an ejection spring, the second baffle is provided to facilitate the support of one end of the ejection spring, so that the ejection spring can reset the ejection button.

[0023] Furthermore, the sliding groove is provided in the second assembly hole.

[0024] By adopting the above solution, since the dynamic blood glucose detection module is assembled in the second assembly hole, it is only necessary to ensure that the first protrusion slides in the second assembly hole. Therefore, the slide groove is set accordingly in the second assembly hole. While completing the auxiliary hard needle rebound, the setting length of the slide groove is limited to ensure the strength of the push rod.

[0025] Furthermore, a first baffle is provided between the inner tube and the main shell, the inner tube and the main shell are connected through the first baffle, the push rod is provided with an outward-expanding structural plate in the direction away from the first baffle, one end of the launching spring is against the first baffle, and the other end is against the outward-expanding structural plate.

[0026] By adopting the above solution, the inner tube and the main shell are connected through the first baffle, which facilitates the launch spring to abut against the first baffle. The push rod is provided with an outward-expanding structural plate to facilitate the launch spring to abut against the outward-expanding structural plate, thereby facilitating the launch spring to be compressed by the action of the two, or to push the two to move relative to each other.

[0027] Furthermore, the locking switch structure includes a launch button and a launch button spring, the push rod is provided with an assembly groove for assembling the launch button and the launch button spring, one end of the launch button spring is abutted against the bottom of the assembly groove, and the other end is abutted against the launch button, and the main shell is provided with a clamping hole for clamping with the launch button.

[0028] By adopting the above solution, the firing button cooperates with the firing button spring to facilitate locking the firing spring in a compressed state and triggering the release of the elastic potential energy of the firing spring.

[0029] Furthermore, the launch button is provided with a limiting protrusion, and the size of the limiting protrusion is larger than the size of the clamping hole.

[0030] By adopting the above solution, the firing button is prevented from falling out of the engaging hole.

[0031] In summary, the needle assist device provided by the present invention has the following technical effects:

[0032] The main shell and the push rod are slidably connected through the cooperation of the first protrusion and the slide groove. The launching spring is set along the setting direction of the slide groove, and one end of the launching spring is against the main shell, and the other end is against the push rod. The relative movement of the main shell and the push rod completes the compression and energy storage of the launching spring or the decompression and energy release. When the launching spring is in a compressed state, the hard needle recovery spring is directly or indirectly compressed, and the release of the elastic potential energy of the hard needle recovery spring is limited. During the resetting process of the launching spring, the hard needle penetrates into the body of the tester. While the first protrusion moves relative to the hard needle recovery spring assembled on the push rod, the hard needle recovery spring pushes the hard needle to move in the direction away from the tester's skin, completing the automatic recovery of the hard needle, thereby reducing the time the hard needle stays in the tester's skin, and realizing the problems such as increased discomfort and pain of the tester due to the increased time the hard needle remains in the skin, and reducing the tester's operational errors caused by the removal of the hard needle, and even reducing the occurrence of infection problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of a partial cross-sectional structure of the needle assist device of the present utility model;

[0034] Figure 2 This is a schematic diagram of the structure of the push rod portion of the utility model;

[0035] Figure 3 This is a schematic diagram of the cross-sectional structure of the push rod portion of the present utility model;

[0036] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the dynamic blood glucose detection module of the present utility model;

[0037] Figure 5 This is a schematic side sectional structure diagram of the dynamic blood glucose monitoring module of the present invention;

[0038] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the utility model in the state of being ready to launch;

[0039] Figure 7 This is a schematic diagram of the side cross-section structure of the utility model in the ready-to-launch state;

[0040] Figure 8 This is a schematic side cross-sectional structure diagram of the hard needle puncture action in the firing state of the present invention;

[0041] Figure 9 This is a side cross-sectional structural diagram of the utility model in the firing state of the hard needle recovery action;

[0042] Figure 10 This is a side sectional structural diagram of the utility model for removing the dynamic blood glucose detection module.

[0043] Among them, the meanings of the figure marks are as follows: 1. main shell; 11. inner tube; 12. first protrusion; 13. snap-on hole; 14. first baffle; 2. push rod; 21. slide groove; 22. buckle; 23. second baffle; 24. avoidance hole; 25. outward expansion structure plate; 26. assembly groove; 27. assembly hole; 271. first assembly hole; 272. second assembly hole; 3. launch spring; 4. locking switch structure; 41. launch button; 411. limiting protrusion; 42. launch button spring; 5. pull cover; 51. ejection button assembly through hole; 6. ejection button; 61. second protrusion; 62. ejection spring; 7. dynamic blood glucose detection module; 71. hard needle part; 711. hard needle recovery spring; 712. hard needle; 713. elastic wave plate; 714. needle seat; 72. soft needle part; 721. soft needle; 723. needle cover. DETAILED DESCRIPTION

[0044] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] In order to facilitate the understanding of the embodiments of the present invention, the following will be further explained with reference to specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0048] See Figure 1 、 Figure 4 and Figure 5 As shown, the utility model discloses a needle assist device, including a main shell 1, a push rod 2, a launch spring 3 and a locking switch structure 4. An inner tube 11 is provided in the main shell 1, and a first protrusion 12 is provided on the inner wall of the inner tube 11. The push rod 2 is arranged through the inner tube 11. The push rod 2 is provided with a slide groove 21. The first protrusion 12 is slidably arranged in the slide groove 21. One end of the push rod 2 is used to assemble a dynamic blood glucose detection module 7. The dynamic blood glucose detection module 7 includes a hard needle 712 and a hard needle recovery spring 711. The hard needle recovery spring 711 is used to drive the hard needle 712 to move in a direction away from the launch movement of the hard needle 712. The launching spring 3 is set parallel to the setting direction of the slide groove 21, and one end of the launching spring 3 is against the main shell 1, and the other end is against the push rod 2. The locking switch structure 4 is used to complete the locking action and the unlocking action. The locking action is to limit the reset of the launching spring 3 after compression, and the unlocking action is to release the locking action. When the launching spring 3 is in a compressed state, the first protrusion 12 directly or indirectly compresses the hard needle recovery spring 711 to limit the release of the elastic potential energy of the hard needle recovery spring 711. When the launching spring 3 is reset, the first protrusion 12 releases the compression of the hard needle recovery spring 711.

[0049] Specifically, the main shell 1 is tubular, and an inner tube 11 is provided in the main shell 1. A first protrusion 12 is provided on the inner wall of the inner tube 11. The push rod 2 is arranged through the inner tube 11, and the push rod 2 is provided with a slide groove 21 that slides with the first protrusion 12 so that the first protrusion 12 can slide along the slide groove 21. One end of the push rod 2 is used to assemble the dynamic blood glucose detection module 7. The dynamic blood glucose detection module 7 includes a hard needle 712 and a hard needle recovery spring 711. The hard needle recovery spring 711 is used to drive the hard needle 712 to move in the direction of movement away from the hard needle 712 when it is launched, that is, the hard needle 712 is automatically recovered by the hard needle recovery spring 711. The firing spring 3 is arranged along the direction in which the slide groove 21 is arranged. This arrangement allows the first protrusion 12 to slide relative to the slide groove 21, that is, the arrangement direction of the firing spring 3 is the same as the relative sliding direction of the main housing 1 and the push rod 2. When the main housing 1 and the push rod 2 compress the firing spring 3, no significant force component is generated, thereby saving effort during the compression of the firing spring 3 and better driving the relative movement of the main housing 1 and the push rod 2 during the rebound process after the compression of the firing spring 3. The locking switch structure 4 is used to complete the locking and unlocking actions. The locking action is to limit the reset of the firing spring 3 after compression. Since the firing spring 3 will be compressed after the main housing 1 and the push rod 2 slide relative to each other, the locking switch structure 4 completes the locking action, limiting the main housing 1 and the push rod 2 from being reset by the action of the firing spring 3. This arrangement facilitates the storage of compressed energy of the firing spring 3, thereby facilitating subsequent firing. The unlocking action is to release the locking action, i.e., to release the restriction on the compressed firing spring 3, allowing the firing spring 3 to release its elastic potential energy and reset. During the reset process, since the tester holds the main housing 1 during use, the main housing 1 is stationary. The firing spring 3 pushes the push rod 2 relative to the main housing 1, pushing the continuous blood glucose monitoring module 7 mounted on one end of the push rod 2 to perform injection. More importantly, a first protrusion 12 is provided on the inner wall of the inner tube 11, facing the side of the push rod 2. When the firing spring 3 is in a compressed state, it corresponds to the movement of the push rod 2 relative to the main housing 1. During this movement of the push rod 2 relative to the main housing 1, the first protrusion 12 moves relative to the push rod 2 and the hard needle recovery spring 711 mounted therein. When the first protrusion 12 moves toward the hard needle recovery spring 711, it can directly or indirectly suppress the compressed hard needle recovery spring 711, thereby limiting the release of its elastic potential energy. When the launching spring 3 is reset, that is, the first protrusion 12 moves in the direction away from the hard needle recovery spring 711, the first protrusion 12 releases the compression on the hard needle recovery spring 711, and the hard needle recovery spring 711 drives the hard needle 712 to be automatically pulled out from the tester's skin, thereby reducing the time that the hard needle 712 invades the tester's skin.Regarding the first protrusion 12 directly or indirectly compressing the hard needle recovery spring 711, direct compression refers to the first protrusion 12 directly contacting the hard needle recovery spring 711 and being able to compress the hard needle recovery spring 711; indirect compression refers to the first protrusion 12 completing the compression of the hard needle recovery spring 711 by acting on other components. As for how the hard needle recovery spring 711 drives the hard needle 712 to automatically recover, the structure that can be used is that the hard needle recovery spring 711 is connected to the needle tail of the hard needle 712 in a direction away from the launch movement direction of the hard needle 712. In this way, during the rebound of the hard needle recovery spring 711, the hard needle 712 can be pulled to move in a direction away from the tester's skin, completing the automatic recovery of the hard needle 712. The specific structure of the hard needle recovery spring 711 driving the hard needle 712 to automatically recover is not described here.

[0050] As a preferred solution, it is best if the spring coefficient of the launch spring 3 is higher than the spring coefficient of the hard needle recovery spring 711. This ensures that when the launch spring 3 is still in the reset process, the hard needle recovery spring 711 will not complete the reset too early, thereby affecting the puncture effect of the hard needle 712 on the skin.

[0051] In addition, in order to make the sliding between the main shell 1 and the push rod 2 smoother, two or three first protrusions 12 can be set on the main shell 1, evenly distributed along the circumference of the inner tube 11, and sliding grooves 21 corresponding in number and position to the first protrusions 12 are set on the push rod 2. Such a setting can prevent the sliding between the main shell 1 and the push rod 2 from getting stuck.

[0052] See Figure 1 As shown, in some embodiments, in order to facilitate the control of the push rod 2 and facilitate the tester to operate the push rod 2 with bare hands, a pull cover 5 is connected to one end of the push rod 2, and the edge of the pull cover 5 is protruding from the push rod 2. Such a setting may increase the tester's handholding area, thereby facilitating the compression of the launch spring 3 by pulling the pull cover 5.

[0053] See Figure 1-5 As shown, further, the push rod 2 is provided with an assembly hole 27 parallel to the direction of the slide groove 21, and the pull cover 5 is provided with an ejection button assembly through hole 51 corresponding to the assembly hole 27, and the ejection button assembly through hole 51 is penetrated by the ejection button 6, and a snap-fit structure is provided at the contact point between the assembly hole 27 and the ejection button 6 for snapping the dynamic blood glucose detection module 7, and the dynamic blood glucose detection module 7 is arranged in the assembly hole 27.

[0054] See Figure 1-5As shown, in this embodiment, the snap-fit structure includes a snap 22 and a second protrusion 61. The snap 22 is arranged on the inner wall of the assembly hole 27, and the second protrusion 61 is arranged on the ejection button 6. The ejection button 6 is slidably arranged in the assembly hole 27. During the movement of the ejection button 6 toward the snap 22, the second protrusion 61 can push the snap 22 to undergo elastic deformation in the direction away from the center of the assembly hole 27, so as to be used to disengage the dynamic blood glucose detection module 7. In the above structure, the snap 22 is arranged on the inner wall of the assembly hole 27 to facilitate the snap-fit fixation of the dynamic blood glucose detection module 7. The second protrusion 61 is arranged on the ejection button 6. By pressing the ejection button 6, the dynamic blood glucose detection module 7 remaining in the assembly hole 27 is ejected, completing the complete separation of the needle aid and the dynamic blood glucose detection module 7, thereby facilitating the reuse of the needle aid. In this embodiment, the buckle 22 is made of a material with a certain elastic deformation ability. When the pressure on the ejection button 6 is released, the buckle 22 will rebound and reset, and in the process of rebounding and resetting, the second protrusion 61 will be ejected. The second protrusion 61 is integrally provided with the ejection button 6, that is, when the buckle 22 rebounds and resets, it will drive the ejection button 6 to reset. Of course, in order to improve the clamping effect of the clamping structure on the dynamic blood glucose monitoring module 7, multiple groups of clamping structures can be evenly distributed along the circumference of the ejection button 6 to improve the clamping effect on the dynamic blood glucose monitoring module 7. At the same time, when the second protrusion 61 pushes the buckle 22 to elastically deform, the multiple buckles 22 are subjected to more uniform force.

[0055] See Figure 1 As shown, in some embodiments, in order to facilitate the rebound of the ejection button 6 after being pressed, so as to quickly reset the ejection button 6, a reset elastic member is installed in the ejection button 6 for resetting the ejection button 6 after sliding.

[0056] See Figure 1-5 As shown, in this embodiment, the reset elastic member adopts an ejection spring 62, and correspondingly, a second baffle 23 is provided in the assembly hole 27, and the second baffle 23 divides the assembly hole 27 into a first assembly hole 271 and a second assembly hole 272. The ejection button 6 is arranged in the first assembly hole 271, and the second baffle 23 is provided with an avoidance hole 24 for the second protrusion 61 to pass through. The buckle 22 is at least partially located in the second assembly hole 272. The second assembly hole 272 is used to assemble the dynamic blood glucose detection module 7. One end of the ejection spring 62 is against the ejection button 6, and the other end is against the second baffle 23. When the reset elastic member adopts the ejection spring 62, the second baffle 23 is provided to facilitate the support of one end of the ejection spring 62, so that the ejection spring 62 can complete the reset of the ejection button 6.

[0057] See Figures 1-4As shown, in some embodiments, since the dynamic blood glucose detection module 7 is assembled in the second assembly hole 272, it is only necessary to ensure that the first protrusion 12 slides in the second assembly hole 272. Therefore, the slide groove 21 is correspondingly set on the second assembly hole 272. While completing the rebound of the auxiliary hard needle 712, the setting length of the slide groove 21 is limited to ensure the strength of the push rod 2.

[0058] See Figures 1-4 As shown, in this embodiment, a first baffle 14 is provided between the inner tube 11 and the main shell 1, and the inner tube 11 and the main shell 1 are connected through the first baffle 14. The push rod 2 is provided with an outward-expanding structural plate 25 in the direction away from the first baffle 14, and one end of the launching spring 3 is against the first baffle 14, and the other end is against the outward-expanding structural plate 25.

[0059] Specifically, the first baffle 14 is disposed at the same end of the inner tube 11 and the main housing 1, connecting the two. This structure forms a U-shaped groove, greatly facilitating the assembly of the launch spring 3. The radial spring is simply sleeved against the outer wall of the inner tube 11, facilitating the abutment and limiting of one end of the launch spring 3. The push rod 2 is provided with an outwardly flared structural plate 25 at the end facing away from the first baffle 14. This outwardly flared structural plate 25 facilitates abutment against one end of the launch spring 3. The abutment between the first baffle 14 and the outwardly flared structural plate 25 facilitates the completion of the force accumulation, compression, and reset firing operations of the launch spring 3.

[0060] See Figure 1 and Figure 6 As shown, in this embodiment, the locking switch structure 4 includes a firing button 41 and a firing button spring 42, and the push rod 2 is provided with an assembly groove 26 for assembling the firing button 41 and the firing button spring 42. One end of the firing button spring 42 is abutted against the bottom of the assembly groove 26, and the other end is abutted against the firing button 41. The main shell 1 is provided with a clamping hole 13 for clamping with the firing button 41.

[0061] Specifically, the lock switch structure 4 includes a firing button 41 and a firing button spring 42. The push rod 2 is provided with an assembly slot 26, and the firing button 41 and the firing button spring 42 are both assembled in the assembly slot 26. One end of the firing button spring 42 abuts against the bottom of the assembly slot 26, and the other end abuts against the firing button 41. The main housing 1 is provided with a snap-in hole 13 for snapping the firing button 41. During use, when the push rod 2 and the main housing 1 are in relative motion, and the compression action of the firing spring 3 is completed, the firing button 41 coincides with the position of the snap-in hole 13. The firing button 41 is acted upon by the firing button spring 42 and is pushed out, causing the firing button 41 to snap into engagement with the snap-in hole 13.

[0062] See Figure 3As shown, further, the locking switch structures 4 can be provided in two groups, and are arranged symmetrically with respect to the center line of the push rod 2 to ensure that the locking switch structures 4 are subjected to uniform force during the clamping process.

[0063] See Figure 1 and Figure 2 As shown, in some embodiments, in order to prevent the launch button 41 from falling out due to the action of the launch button spring 42 when the launch button 41 is engaged with the engaging hole 13, a limiting protrusion 411 can be provided at the launch button 41. When the launch button 41 is engaged with the engaging hole 13, the limiting protrusion 411 abuts against the engaging hole 13, and the size of the limiting protrusion 411 is larger than the size of the engaging hole 13, and will not fall out of the engaging hole 13, thereby preventing the launch button 41 from falling out.

[0064] The following is an example of the working principle of the present invention using a dynamic blood glucose detection module 7 used in this embodiment:

[0065] Ready to launch: See Figure 6 and Figure 7 As shown, the dynamic blood glucose detection module 7 is assembled in the second assembly hole 272. At this time, the buckle 22 and the dynamic blood glucose detection module 7 are provided with a card slot that cooperates with the buckle 22 to be engaged for clamping and fixing. At this time, the main shell 1 is pressed down to make the main shell 1 slide relative to the push rod 2. During the sliding process, the firing spring 3 is compressed. When the main shell 1 moves to the engaging hole 13 and engages with the firing button 41, the needle-assisting device is charged. At the same time, the first protrusion 12 also moves toward the hard needle recovery spring 711, indirectly suppressing the hard needle recovery spring 711 in a compressed state to prevent the hard needle recovery spring 711 from rebounding (this embodiment The dynamic blood glucose detection module 7 used in the example is a needle cover 723 that makes the hard needle recovery spring 711 in a compressed state for the dynamic blood glucose detection module 7 to be assembled), and the needle aid enters the ready-to-fire state. The above-mentioned indirect suppression means that in this embodiment, the first protrusion 12 suppresses an elastic wave plate 713, so that the elastic wave plate 713 is deformed toward the central axis direction of the push rod 2, and the elastic wave plate 713 suppresses the needle seat 714 fixedly connected to the hard needle 712, and the needle seat 714 suppresses the hard needle recovery spring 711, thereby realizing the above-mentioned first protrusion 12 indirectly suppressing the rebound of the hard needle recovery spring 711.

[0066] Hard needle recovery spring 711 unlocked state: see Figure 4-Figure 7 As shown, the compression of the hard needle recovery spring 711 by the needle cover 723 is released. Since the first protrusion 12 indirectly suppresses the rebound of the hard needle recovery spring 711, the rebound phenomenon of the hard needle recovery spring 711 will not occur.

[0067] Launch status: See Figure 8As shown, after the hard needle 712 and the soft needle 721 of the dynamic blood glucose detection module 7 are aligned with the skin, the firing button 41 is pressed, and the firing spring 3 pushes the push rod 2 during the reset process to simultaneously inject the hard needle 712 and the soft needle 721 into the tester's skin. Figure 9 As shown, the first protrusion 12 moves away from the elastic wave plate 713, which is pressed in the ready-to-fire state. After the elastic wave plate 713 is reset, the needle holder 714 is driven by the hard needle recovery spring 711 to cause the needle holder 714 and the hard needle 712 fixedly connected to the needle holder 714 to rebound, thereby achieving the automatic recovery function of the hard needle 712. Furthermore, the detection module with the soft needle portion 72 of the continuous blood glucose monitoring module 7 is placed on the test subject's skin.

[0068] Remove the dynamic blood glucose monitoring module 7: See Figure 10 As shown, the ejection button 6 is pressed, and the second protrusion 61 provided on the ejection button 6 pushes the buckle 22 to elastically deform, so that the hard needle part 71 of the dynamic blood glucose detection module 7 that has not been detached from the needle assisting device is disengaged from the engagement with the buckle 22 and falls out of the second assembly hole 272. After the ejection button 6 is released, the ejection button 6 is reset by the action of the ejection spring 62, thereby achieving complete detachment of the used dynamic blood glucose detection module 7 from the needle assisting device. Figure 1 The state shown facilitates the next use of the needle assisting device, thereby realizing the repeated use of the needle assisting device.

[0069] It should be noted that, since the soft needle part 72 of the dynamic blood glucose detection module 7 can directly adopt the soft needle part 72 in the prior art, the introduction of the soft needle part 72 in the present invention is not elaborated in detail.

[0070] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A needle assist device, characterized in that: include: A main shell (1), wherein an inner tube (11) is provided in the main shell (1), and a first protrusion (12) is provided on the inner wall of the inner tube (11); A push rod (2), the push rod (2) is arranged through the inner tube (11), the push rod (2) is provided with a slide groove (21), the first protrusion (12) is slidably arranged in the slide groove (21), one end of the push rod (2) is used to assemble a dynamic blood glucose detection module (7), the dynamic blood glucose detection module (7) includes a hard needle (712) and a hard needle recovery spring (711), the hard needle recovery spring (711) is used to drive the hard needle (712) to move in a direction away from the hard needle (712) in an emission motion direction; A launching spring (3), wherein the launching spring (3) is arranged parallel to the arrangement direction of the slide groove (21), and one end of the launching spring (3) abuts against the main housing (1), and the other end abuts against the push rod (2); A locking switch structure (4), the locking switch structure (4) is used to complete a locking action and an unlocking action, the locking action is to limit the reset of the launch spring (3) after compression, and the unlocking action is to release the locking action; Wherein, when the launching spring (3) is in a compressed state, the first protrusion (12) directly or indirectly compresses the hard needle recovery spring (711) to limit the release of the elastic potential energy of the hard needle recovery spring (711); when the launching spring (3) is reset, the first protrusion (12) releases the compression of the hard needle recovery spring (711).

2. The needle assist device according to claim 1, characterized in that: One end of the push rod (2) is connected to a pull cover (5).

3. The needle assist device according to claim 2, characterized in that: The push rod (2) is provided with an assembly hole (27) parallel to the direction of the slide groove (21); the sliding cover (5) is provided with an ejection button assembly through hole (51) corresponding to the assembly hole (27); an ejection button (6) is passed through the ejection button assembly through hole (51); a clamping structure is provided at the contact point between the assembly hole (27) and the ejection button (6) for clamping the dynamic blood glucose detection module (7).

4. The needle assist device according to claim 3, characterized in that: The snap-fit structure comprises a snap (22) and a second protrusion (61); the snap (22) is arranged on the inner wall of the assembly hole (27); the second protrusion (61) is arranged on the ejection button (6); the ejection button (6) is slidably arranged in the assembly hole (27); when the ejection button (6) moves toward the snap (22), the second protrusion (61) can push the snap (22) to undergo elastic deformation in a direction away from the center of the assembly hole (27), so as to be separated from the dynamic blood glucose detection module (7).

5. The needle assist device according to claim 4, characterized in that: A reset elastic member is assembled in the ejection button (6) for resetting the ejection button (6) after sliding.

6. The needle assist device according to claim 5, characterized in that: A second baffle (23) is provided in the assembly hole (27), and the second baffle (23) divides the assembly hole (27) into a first assembly hole (271) and a second assembly hole (272). The ejection button (6) is provided in the first assembly hole (271), and the second baffle (23) is provided with an avoidance hole (24) for the second protrusion (61) to pass through. The buckle (22) is at least partially located in the second assembly hole (272). The second assembly hole (272) is used to assemble the dynamic blood glucose detection module (7). The reset elastic member is an ejection spring (62), and one end of the ejection spring (62) is against the ejection button (6), and the other end is against the second baffle (23).

7. The needle assist device according to claim 6, characterized in that: The sliding groove (21) is provided in the second assembly hole (272).

8. The needle assist device according to claim 1, characterized in that: A first baffle (14) is provided between the inner tube (11) and the main shell (1); the inner tube (11) and the main shell (1) are connected via the first baffle (14); the push rod (2) is provided with an outward-expanding structural plate (25) in a direction away from the first baffle (14); one end of the launching spring (3) abuts against the first baffle (14), and the other end abuts against the outward-expanding structural plate (25).

9. The needle assist device according to claim 1, characterized in that: The locking switch structure (4) includes a firing button (41) and a firing button spring (42); the push rod (2) is provided with an assembly groove (26) for assembling the firing button (41) and the firing button spring (42); one end of the firing button spring (42) abuts against the bottom of the assembly groove (26), and the other end abuts against the firing button (41); and the main housing (1) is provided with a clamping hole (13) for clamping with the firing button (41).

10. The needle assist device according to claim 9, characterized in that: The firing button (41) is provided with a limiting protrusion (411), and the size of the limiting protrusion (411) is larger than the size of the clamping hole (13).

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