medical devices

Abstract

The present invention provides a needle-assisting device and medical device for percutaneously implanting a sensor. The needle-assisting device includes a first housing and a needle insertion assembly. The needle insertion assembly includes a needle holder and a second housing, and a first mounting seat is provided at the distal end of the second housing. The first mounting seat is connected to a first elastic member. The first mounting seat includes a plurality of elastic claws. The first housing includes a clamping member and a pressing portion. Before the needle insertion assembly approaches the proximal end of the first housing, the clamping member can be mounted on the outside of the elastic claws to clamp the elastic claws. After the pressing portion is triggered, the needle insertion assembly moves toward the proximal end of the first housing to percutaneously implant the sensor into the subcutaneous tissue of the target subject until the clamping member can separate from the elastic claws. The first elastic member causes the needle holder to automatically and instantaneously move toward the distal end of the first housing. The present invention is not only simple in structure and low in cost, but also more convenient to operate.

Description

[0001] This divisional application is a divisional application based on the Chinese patent application with application number 202111417361.2, application date November 26, 2021, and invention name “Needle aid and medical device for transcutaneous implantation of sensors”. Technical Field

[0002] The present invention relates to the technical field of medical devices, and in particular to a needle-assisting device and a medical apparatus for percutaneous implantation of a sensor. Background Art

[0003] Measuring blood sugar levels is a daily necessity for people with diabetes. Currently, the most common method is to collect blood from a fingertip and use a fingerstick blood glucose meter to measure blood sugar levels. However, this method has significant limitations, as it only measures a person's blood sugar level at a single moment in time and cannot continuously monitor blood sugar levels. To address this shortcoming, CGM (continuous glucose monitoring) has emerged.

[0004] The principle of CGM is to monitor the glucose concentration in the interstitial fluid of the subcutaneous tissue through a glucose sensor. It is a monitoring technology that indirectly reflects the blood glucose concentration level. It can continuously provide blood glucose concentration information throughout the day, understand the trend of blood glucose concentration fluctuations, and provide doctors with a very effective judgment basis for diagnosis and treatment of target subjects.

[0005] Existing CGM products have complex structures, high production costs, and cumbersome user procedures, resulting in a poor user experience. Summary of the Invention

[0006] The object of the present invention is to provide a needle-assisting device and a medical device for percutaneous implantation of a sensor, which can solve the problems of the existing needle-assisting device having a complex structure and high cost.

[0007] In order to solve the above technical problems, the present invention provides a needle-assisting device for percutaneous implantation of a sensor, the needle-assisting device comprising a first shell and a needle insertion assembly, the needle insertion assembly being arranged inside the first shell and being used to carry a sensor assembly including the sensor; the needle insertion assembly comprising a needle holder and a second shell, the needle holder being used to fix the implantation needle, the distal end of the second shell being provided with a first mounting seat for releasably accommodating the needle holder, the proximal end of the second shell being used to be detachably connected to the sensor assembly; the first mounting seat being connected to a first elastic member arranged axially along the first shell, the distal end of the first elastic member being connected to the needle holder, the proximal end of the first elastic member being connected to the proximal end of the first mounting seat; the first mounting seat comprising a plurality of elastic claws, a plurality of the elastic claws A first accommodating space for accommodating the needle holder and the first elastic member can be formed between the elastic claws; the first shell includes a clamping member and a pressing portion, the clamping member is arranged inside the first shell and along the axial direction of the first shell, and before the needle insertion assembly approaches the proximal position of the first shell, the clamping member can be sleeved on the outside of the elastic claw to clamp the elastic claw; after triggering the pressing portion, the needle insertion assembly moves toward the proximal position close to the first shell to percutaneously implant the sensor into the subcutaneous tissue of the target object until the clamping member can be separated from the elastic claw so that the distal end of the elastic claw can be separated from the needle holder, and then the first elastic member causes the needle holder to automatically move toward the distal end of the first shell instantly.

[0008] Optionally, before the needle insertion assembly approaches the proximal position of the first shell, the first elastic member is in a compressed state so that the needle holder can be accommodated in the first mounting seat; after the needle insertion assembly approaches the proximal position of the first shell, under the action of the first elastic member, the needle holder can be released from the first mounting seat and move toward the distal end of the first shell.

[0009] Optionally, the first mounting seat also includes a base, and the multiple elastic claws extend axially along the base toward the distal end of the first shell, and the first accommodating space can be formed between the base and the elastic claws; before the needle insertion assembly approaches the proximal position of the first shell, the distal end of the elastic claw can abut against the distal end of the needle holder to fix the needle holder in the first accommodating space; after the needle insertion assembly approaches the proximal position of the first shell, under the action of the first elastic member, the distal end of the elastic claw can be separated from the needle holder, so that the needle holder can be released from the first mounting seat and move toward the position of the distal end of the first shell.

[0010] Optionally, a second elastic member is provided inside the first shell along its axial direction, the distal end of the second elastic member is connected to the distal end of the first shell, and the proximal end of the second elastic member is connected to the second shell; before triggering the pressing part, the second elastic member is in a compressed state; after triggering the pressing part, under the action of the second elastic member, the second shell can move toward the position of the proximal end of the first shell.

[0011] Optionally, a plurality of connecting pieces are provided at the distal end of the second shell, and a connecting platform cooperating with the connecting pieces is provided on the inner wall of the first shell, and the connecting platform is close to the location of the pressing portion; before the pressing portion is triggered, the connecting piece is connected to the connecting platform; after the pressing portion is triggered, the connecting piece can be detached from the connecting platform.

[0012] Optionally, the second shell is provided with a slide groove running through the proximal and distal ends of the second shell along the axial direction of the first shell, a slide rail matching the slide groove is provided on the inner wall of the first shell, and a limit piece is provided at the proximal end of the slide rail.

[0013] Optionally, the pressing part includes a main body and a first cantilever arranged on both sides of the main body, the first cantilever extends outward along the main body, the first cantilever is connected to the inner wall of the first shell, the first shell is provided with a first mounting hole corresponding to the main body, the main body is installed in the first mounting hole, the main body can move back and forth in the first mounting hole, the first cantilever is arranged in an arc shape, and a second mounting hole is provided on the side of the first cantilever away from the main body, and a mounting column matching the second mounting hole is provided on the inner wall of the first shell.

[0014] Optionally, the needle holder includes a fixing seat and a plurality of guide posts extending along the axial direction of the fixing seat toward the proximal end of the first shell, a second accommodating space for accommodating the first elastic member is formed between the fixing seat and the guide posts, the proximal end of the fixing seat is provided with an opening, the interior of the fixing seat is provided with a connecting portion arranged along its axial direction, the distal end of the implant needle is provided with a plurality of first clamping portions, and the connecting portion is provided with a first clamping groove that cooperates with the first clamping portion.

[0015] Optionally, a plurality of second cantilevers are provided at the distal end of the implant needle, and the second cantilevers extend outward along the axial direction of the implant needle, and the first clamping portion is provided on the distal end of the second cantilever.

[0016] Optionally, an anti-slip structure is provided on the outer wall of the first shell; the anti-slip structure includes one or more of ridges, bumps, pits or textures arranged on the first shell.

[0017] In order to solve the above technical problems, the present invention also provides a medical device, including a sensor assembly and the needle aid described above, wherein the sensor assembly includes a connected sensor and a transmitter. When the sensor is percutaneously implanted under the skin of the target object, the transmitter can receive the detection results of the sensor and send the detection results out.

[0018] Optionally, the sensor assembly further includes a base, the sensor and the transmitter are mounted on the base, a second mounting seat for releasably accommodating the base is provided at the proximal end of the second shell, and the base is detachably connected to the second mounting seat.

[0019] Optionally, a plurality of second card slots are provided on the outer periphery of the base, and a second card connection portion matching with the second card slots is provided on the inner wall of the second mounting seat.

[0020] Optionally, the proximal end of the base is provided with a contact surface extending outward along its circumference for contacting the skin of the target object, and an adhesive tape is provided on the contact surface.

[0021] Optionally, the medical device further includes a protective cover, and the sensor assembly and the needle insertion assembly are encapsulated in a space formed by the first shell and the protective cover. The protective cover is detachably mounted on the proximal end of the first shell, and the distal end of the protective cover is provided with a release film that cooperates with the adhesive tape.

[0022] Optionally, the base is provided with a through hole for the implant needle to pass through, the proximal end of the sensor is provided with a pin, the pin passes through the outside of the through hole, and the implant needle is provided with a groove along its axial direction for wrapping the pin.

[0023] Optionally, the sensor assembly is provided with a through hole for the implantation needle of the needle assist device to pass through, and an elastic contact switch is provided in the through hole. When the needle holder is accommodated in the first mounting seat, the elastic contact switch is in an off state, and when the needle holder is released from the first mounting seat and moves to a position close to the far end of the first shell, the elastic contact switch is in an on state.

[0024] Optionally, the elastic contact switch includes a pair of oppositely arranged conductive members, at least one of the two conductive members is elastic, the implant needle includes a connected needle handle and a needle body, the needle handle is made of insulating material, and when the needle holder is accommodated in the first mounting seat, one of the conductive members abuts against one side of the needle handle, and the other conductive member abuts against the other side of the needle handle, so that the elastic contact switch is in an off state, and when the needle holder is released from the first mounting seat and moves to a position close to the distal end of the first shell, the two conductive members can contact each other, so that the elastic contact switch is in an on state.

[0025] Optionally, the elastic conductive part includes a connecting plate, a telescopic part and a contact terminal, the telescopic part is fixed to the connecting plate, and the contact terminal is connected to the end of the telescopic part away from the connecting plate. Under the action of the telescopic part, the contact terminal can move toward a position away from the connecting plate until it contacts another conductive part, so that the elastic contact switch is turned on.

[0026] Optionally, the telescopic member includes a hollow sleeve and a third elastic member arranged in the sleeve, the sleeve is fixed to the connecting plate, one end of the third elastic member is connected to the sleeve, and the other end of the third elastic member is connected to the contact terminal.

[0027] Optionally, the telescopic member and the contact terminal are an integrated structure, wherein the telescopic member is an obliquely arranged spring piece, and the contact terminal is formed by bending an end of the telescopic member away from the connecting plate.

[0028] Optionally, the medical device further includes a sterilization box, and the sensor assembly and the needle assist device are sterilized and installed in the sterilization box.

[0029] Compared with the prior art, the needle-assisting device and medical device for percutaneous implantation of a sensor provided by the present invention have the following advantages: since the needle-assisting device provided by the present invention includes a first shell and a needle insertion assembly, the needle insertion assembly is arranged inside the first shell and is used to carry the sensor assembly including the sensor; the needle insertion assembly includes a needle holder and a second shell, the needle holder is used to fix the implantation needle, the distal end of the second shell is provided with a first mounting seat for releasably accommodating the needle holder, and the proximal end of the second shell is used to be detachably connected to the sensor assembly; the first mounting seat is connected to a first elastic member arranged along the axial direction of the first shell, the distal end of the first elastic member is connected to the needle holder, and the proximal end of the first elastic member is connected to the proximal end of the first mounting seat; the first mounting seat includes a plurality of elastic clips Claws, a first accommodating space for accommodating the needle holder and the first elastic member can be formed between the multiple elastic claws; the first shell includes a clamping member and a pressing portion, the clamping member is arranged inside the first shell and along the axial direction of the first shell, and before the needle insertion assembly approaches the proximal position of the first shell, the clamping member can be sleeved on the outside of the elastic claw to clamp the elastic claw; after triggering the pressing portion, the needle insertion assembly moves toward the proximal position close to the first shell to percutaneously implant the sensor into the subcutaneous tissue of the target object until the clamping member can be separated from the elastic claw so that the distal end of the elastic claw can be separated from the needle holder, and then the first elastic member causes the needle holder to automatically move toward the distal end of the first shell instantly. Thus, by triggering the pressing portion, the needle insertion assembly can be moved from a position away from the proximal end of the first shell to a position close to the proximal end of the first shell, thereby transporting the sensor assembly carrying the sensor to the skin surface of the target subject, and implanting the sensor percutaneously under the subcutaneous tissue of the target subject to detect parameters such as the blood glucose concentration in the target subject's blood. Since the needle holder is releasably accommodated in the first mounting seat, after the sensor is percutaneously implanted under the subcutaneous tissue of the target subject, the clamping member can be separated from the elastic claw, thereby enabling the distal end of the elastic claw to be separated from the needle holder, and then enabling the needle holder to automatically move toward the distal end of the first shell under the action of the rebound force of the first elastic member, thereby enabling the implant needle to instantly rebound into the first shell following the needle holder, effectively preventing the sharp implant needle from accidentally injuring the operator or other personnel. In summary, the needle aid provided by the present invention is not only simple in structure and low in cost, but also more convenient to operate. Since the medical device provided by the present invention includes the needle assisting device described above, it has all the advantages of the medical device described above, and therefore no further details will be given. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the overall structure of the needle assisting device in one embodiment of the present invention.

[0031] Figure 2 4 is a cross-sectional view of the medical device before the pressing portion is triggered in one embodiment of the present invention.

[0032] Figure 3 This is a cross-sectional view of the needle assisting device in one embodiment of the present invention after completing the needle retraction action.

[0033] Figure 4 Schematic diagram of the structure of the needle insertion assembly before needle return in one embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the three-dimensional structure of the needle assisting device in one embodiment of the present invention after completing the needle returning action.

[0035] Figure 6 Schematic diagram of a first shell in one embodiment of the present invention.

[0036] Figure 7 Schematic diagram of the structure of the pressing portion in one embodiment of the present invention.

[0037] Figure 8 Schematic diagram of the structure of a needle holder in one embodiment of the present invention.

[0038] Figure 9 Schematic diagram of the structure of an implant needle in one embodiment of the present invention.

[0039] Figure 10 Schematic diagram of the three-dimensional structure of the sensor assembly in one embodiment of the present invention.

[0040] Figure 11 FIG. 4 is a cross-sectional view of a sensor assembly according to an embodiment of the present invention.

[0041] Figure 12 FIG. 1 is a schematic diagram of the second housing and the sensor assembly being separated from each other in one embodiment of the present invention.

[0042] Figure 13 Schematic diagram of the connection relationship between the sensor assembly and the implant needle in one embodiment of the present invention.

[0043] Figure 14 for Figure 13 sectional view of .

[0044] Figure 15 FIG. 1 is a schematic diagram of an elastic contact switch in an off state according to an embodiment of the present invention.

[0045] Figure 16Schematic diagram of the structure of an elastic conductive member in one embodiment of the present invention.

[0046] Figure 17 FIG. 1 is a schematic diagram of an elastic contact switch in an on state according to an embodiment of the present invention.

[0047] Figure 18 FIG. 1 is a schematic diagram of an elastic contact switch in another embodiment of the present invention when in an on state.

[0048] Figure 19 Schematic diagram of the overall structure of a medical device in another embodiment of the present invention.

[0049] Figure 20 for Figure 19 Schematic diagram of the exploded structure of the medical device shown.

[0050] Figure 21 Schematic diagram of the overall structure of a medical device in another embodiment of the present invention.

[0051] Figure 22 for Figure 21 Schematic diagram of the partial structure of the medical device shown.

[0052] The reference numerals are as follows: first housing 100; rib 110; holding member 120; connecting platform 130; slide rail 140; stopper 141; first mounting hole 150; mounting post 160; pressing portion 200; main body 210; first cantilever 220; second mounting hole 221; rib 211; needle holder 300; implant needle 310; first clamping portion 311 Second cantilever 312; groove 313; needle handle 314; needle body 315; fixing seat 320; connecting portion 321; first slot 3211; guide post 330; second accommodating space 340; second housing 400; first mounting seat 410; base 411; elastic claw 412; first accommodating space 413; connecting member 420; inclined surface 421; slide groove 430; Second mounting base 440; second engaging portion 441; first elastic member 500; second elastic member 600; sensor assembly 700; sensor 710; conductive element 711; pin 712; transmitter 720; base 730; second engaging slot 731; through hole 732; circuit board 740; contact surface 750; elastic contact switch 760; conductive members 761, 761 a, 761b, 761c, 761d; connecting plates 7611, 7611b; first plate body 76111; second plate body 76112; telescopic member 7612, 7612b; sleeve 76121; third elastic member 76122; contact terminals 7613, 7613b; protective cover 800; protective seat 810; sterilization box 900, box body 910; box cover 920. DETAILED DESCRIPTION

[0053] The following is combined with Figures 1 to 22The needle-assisting device and medical device for percutaneous sensor implantation proposed by the present invention are further described in detail in the following detailed description. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention. To make the objects, features, and advantages of the present invention more readily apparent, please refer to the drawings. It should be noted that the structures, proportions, and sizes illustrated in the drawings are intended solely to facilitate understanding and reading by those skilled in the art, and are not intended to limit the implementation of the present invention. Any structural modifications, changes in proportions, or adjustments in size, as long as they produce the same or similar effects and achieve the same objectives, are still within the scope of the technical content disclosed herein. The specific design features of the present invention disclosed herein, including, for example, specific dimensions, orientations, positions, and shapes, will be determined in part by the specific application and environment in which they are intended. Furthermore, in the embodiments described below, the same reference numerals may be used across different drawings to denote the same parts or parts having the same functions, and their repeated descriptions may be omitted. In this specification, similar reference numerals and letters are used to refer to similar items, so once an item is defined in one figure, it need not be further discussed in subsequent figures. In addition, if the method described herein includes a series of steps, the order in which the steps are presented herein is not necessarily the only order in which the steps can be performed, and some of the steps described may be omitted and / or some other steps not described herein may be added to the method.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element. The singular forms "a", "an" and "the" include plural objects, the term "or" is generally used in a sense including "and / or", the term "several" is generally used in a sense including "several", the term "at least two" is generally used in a sense including "two or more", and the term "multiple" is used in a sense including "two or more". In addition, the terms "first", "second" and "third" are used for descriptive purposes only and are not to be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0057] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0058] The core idea of the present invention is to provide a needle-assisting device and a medical device for percutaneous implantation of sensors, so as to solve the problems of the existing needle-assisting devices with complex structures and high costs. It should be noted that although this article uses the needle-assisting device for implanting a sensor for detecting blood glucose concentration as an example, as those skilled in the art will understand, the needle-assisting device can also be used to implant sensors for detecting other parameters besides blood glucose concentration, and the present invention does not limit this. In addition, it should be noted that the distal end referred to in this article refers to the end away from the skin of the target object, and the proximal end refers to the end close to the skin of the target object.

[0059] Please refer to Figure 1 and Figure 2 ,in Figure 1 The overall structural diagram of the medical device provided by one embodiment of the present invention is schematically shown. Figure 2 Schematically given Figure 1 The cross-sectional view of the medical device shown in FIG. Figure 1 and Figure 2 As shown, the medical device includes a needle aid and a sensor assembly 700, and the sensor assembly 700 includes a connected sensor 710 (see Figure 11 ) and transmitter 720 (see Figure 11 ), the needle-assisting device is used to percutaneously implant the sensor 710 under the skin of the target object, and the transmitter 720 receives the detection results of the sensor 710 and sends the detection results to a terminal device (not shown in the figure). It should be noted that, as will be understood by those skilled in the art, the terminal device can be a mobile phone, computer, tablet computer or receiver, and data can be transmitted between the transmitter 720 and the terminal device through communication methods in the existing technology, such as WiFi, Bluetooth, NFC or RFID.

[0060] Specifically, if Figure 2As shown, the needle assist device includes a first shell 100 and a needle insertion assembly. The needle insertion assembly is arranged inside the first shell 100 and is used to carry the sensor assembly 700. The first shell 100 is provided with a plurality of pressing parts 200. After the pressing parts 200 are triggered, the needle insertion assembly can move from a position away from the proximal end of the first shell 100 to a position close to the proximal end of the first shell 100, so as to percutaneously implant the sensor 710 into the subcutaneous tissue of the target object. Thus, by triggering the pressing parts 200, the needle insertion assembly can be moved from the distal end (i.e., a position away from the proximal end of the first shell 100) to a position close to the proximal end of the first shell 100, so that the sensor assembly 700 carrying the sensor 710 can be transported to the skin surface of the target object, and the sensor 710 can be percutaneously implanted into the subcutaneous tissue of the target object to detect parameters such as the blood glucose concentration in the blood of the target object.

[0061] Preferably, an anti-slip structure is provided on the outer wall of the first shell 100; the anti-slip structure includes one or more of ridges, bumps, pits or textures arranged on the first shell. Figure 1 As shown, by providing a plurality of ridges 110 on the outer wall of the first shell 100 , the ridges are provided along the circumference of the first shell, which can play an anti-slip role and is more convenient to use.

[0062] Please continue to refer to Figure 2 and Figure 3 ,in Figure 3 A cross-sectional view of the needle assisting device provided by one embodiment of the present invention after completing the needle return action is schematically shown. Figure 2 and Figure 3As shown, the needle insertion assembly includes a needle holder 300 and a second shell 400, the needle holder 300 is used to fix the implant needle 310, the distal end of the second shell 400 is provided with a first mounting seat 410 for releasably accommodating the needle holder 300, and the proximal end of the second shell 400 is used to be detachably connected to the sensor assembly 700. When the sensor 710 is percutaneously implanted subcutaneously in the target object, the needle holder 300 can be released from the first mounting seat 410 and move toward the distal end of the first shell 100. Since the needle holder 300 is releasably accommodated in the first mounting seat 410, when the sensor 710 is percutaneously implanted under the skin of the target object, the needle holder 300 can be released from the first mounting seat 410 and move toward the distal end of the first shell 100, so that the implant needle 310 can instantly rebound into the first shell 100 following the needle holder 300, effectively preventing the sharp implant needle 310 from accidentally injuring the operator or other personnel. In addition, since the sensor assembly 700 is detachably connected to the second shell 400, it is easier to remove the needle aid after the needle return action is completed, and the sensor assembly 700 can remain on the skin of the target object to achieve continuous monitoring of parameters such as blood sugar concentration. In summary, the needle aid provided by the present invention is not only simple in structure and low in cost, but also easier to operate.

[0063] Furthermore, if Figure 2 and Figure 3 As shown, a first elastic member 500 is provided in the first mounting seat 410 along its axial direction, the distal end of the first elastic member 500 is connected to the needle holder 300, and the proximal end of the first elastic member 500 is connected to the proximal end of the first mounting seat 410. Before the needle insertion assembly approaches the proximal position of the first shell 100, the first elastic member 500 is in a compressed state so that the needle holder 300 can be accommodated in the first mounting seat 410. After the needle insertion assembly approaches the proximal position of the first shell 100, under the action of the first elastic member 500, the needle holder 300 can be released from the first mounting seat 410 and move toward the distal end of the first shell 100. Therefore, after the needle insertion assembly is close to the proximal position of the first shell 100 (that is, after the sensor 710 is implanted subcutaneously of the target object), the rebound force of the first elastic member 500 can drive the needle holder 300 to be released from the first mounting seat 410 and move to a position close to the distal end of the first shell 100, thereby effectively preventing the sharp implantation needle 310 from accidentally injuring the operator or other personnel during and after the removal of the needle aid, thereby improving the safety of the present invention during use.

[0064] like Figure 2 and Figure 3 As shown, the first elastic member 500 is preferably a spring, and the first elastic member 500 is disposed around the implant needle 310. Before the needle insertion assembly approaches the proximal end of the first housing 100, the proximal end of the implant needle 310 passes through the first elastic member 500. Thus, by using a spring as the first elastic member 500, the overall structure of the needle assist device provided by the present invention can be further simplified, effectively reducing costs. It should be noted that, as will be understood by those skilled in the art, the first elastic member 500 may also be an elastic element other than a spring, and the present invention is not limited thereto.

[0065] For further information, please refer to Figures 2 to 4 ,in Figure 4 The structural diagram of the needle insertion assembly before the needle is returned in one embodiment of the present invention is schematically shown. Figures 2 to 4 As shown, the first mounting seat 410 includes a hollow base 411 and a plurality of (for example, three) elastic claws 412 extending along the axial direction of the base 411 toward the distal end of the first shell 100. A first accommodating space 413 for accommodating the needle holder 300 and the first elastic member 500 can be formed between the base 411 and the elastic claws 412. Before the needle insertion assembly approaches the proximal position of the first shell 100, the distal end of the elastic claw 412 can abut against the distal end of the needle holder 300 to accommodate the needle holder 300 in the first accommodating space 413. After the needle insertion assembly approaches the proximal position of the first shell 100, under the action of the first elastic member 500, the distal end of the elastic claw 412 can be separated from the needle holder 300, so that the needle holder 300 can be released from the first mounting seat 410 and move toward the distal end of the first shell 100. It should be noted that, as those skilled in the art will appreciate, in some other embodiments, the first mounting seat 410 may not include a base 411 but only include a plurality of elastic claws 412 . In this case, the first accommodating space 413 is surrounded by the plurality of elastic claws 412 .

[0066] Specifically, the rebound force of the first elastic member 500 is greater than the deformation force of the multiple elastic claws 412. Therefore, before the needle insertion assembly approaches the proximal position of the first shell 100 (that is, before the sensor 710 is implanted subcutaneously of the target object), under the action of external force, the downward pressure of the elastic claw 412 on the needle holder 300 can be balanced with the rebound force of the first elastic member 500, so that the needle holder 300 can be firmly fixed in the first mounting seat 410; after the needle insertion assembly approaches the proximal position of the first shell 100 (that is, after the sensor 710 is implanted subcutaneously of the target object), due to the disappearance of external force, under the action of the rebound force of the first elastic member 500, the needle holder 300 can break free from the restraint of the elastic claw 412, and can then be released from the first mounting seat 410 and move toward the distal end of the first shell 100. It should be noted that, although this article uses the example of the first mounting seat 410 including three elastic claws 412 for explanation, as those skilled in the art can understand, in some other embodiments, the first mounting seat 410 may also include two, four or more elastic claws 412, or even elastic arms that can restore deformation to the four sides. The specific setting can be made according to actual conditions, and the present invention is not limited to this.

[0067] Preferably, if Figure 2 and Figure 3As shown, the interior of the first shell 100 is provided with a hollow clamping member 120 arranged along its axial direction. Before the needle insertion assembly approaches the proximal position of the first shell 100, the clamping member 120 can be sleeved on the outside of the elastic claw 412 to clamp the elastic claw 412. After the needle insertion assembly approaches the proximal position of the first shell 100, the clamping member 120 can be separated from the elastic claw 412 so that the distal end of the elastic claw 412 can be separated from the needle holder 300, and then the first elastic member 500 causes the needle holder 300 to automatically move toward the distal end of the first shell 100 instantly. Because before the needle insertion assembly approaches the proximal position of the first housing 100 (that is, before the sensor 710 is implanted subcutaneously in the target object), the holding member 120 can be sleeved on the outside of the elastic claw 412, thereby tightly binding the elastic claw 412 to prevent it from being deformed, thereby enabling the distal end of the elastic claw 412 to abut against the needle holder 300 to accommodate the needle holder 300 in the first mounting seat 410; and after the needle insertion assembly approaches the proximal position of the first housing 100 (that is, before the sensor 710 is implanted subcutaneously in the target object), the holding member 120 can be sleeved on the outside of the elastic claw 412, thereby tightly binding the elastic claw 412 to prevent it from being deformed, thereby enabling the distal end of the elastic claw 412 to abut against the needle holder 300 to accommodate the needle holder 300 in the first mounting seat 410. 710 is implanted subcutaneously in the target object), since the distal end of the elastic claw 412 moves to disengage from the clamping member 120, the elastic claw 412 is no longer constrained by the clamping member 120, and since the rebound force of the first elastic member 500 is greater than the deformation force of the multiple elastic claws 412 at this time, the elastic claw 412 can bend or eject outward under the action of the rebound force of the first elastic member 500, so that the needle holder 300 can be disengaged from the constraint of the elastic claw 412 to release the needle holder 300.

[0068] Please continue to refer to Figure 2 and Figure 3 ,like Figure 2 and Figure 3As shown, the interior of the first shell 100 is provided with a second elastic member 600 arranged along the axial direction thereof. The distal end of the second elastic member 600 is connected to the distal end of the first shell 100, and the proximal end of the second elastic member 600 is connected to the second shell 400. Before the pressing portion 200 is triggered, the second elastic member 600 is in a compressed state. After the pressing portion 200 is triggered, under the action of the second elastic member 600, the second shell 400 can move toward the position of the proximal end of the first shell 100. Because the second elastic member 600 is in a compressed state before the pressing portion 200 is triggered, after the pressing portion 200 is triggered, under the action of the second elastic member 600, the second shell 400 can move more smoothly toward the proximal end of the first shell 100. This further enables the needle-assisting device provided by the present invention to smoothly and accurately implant the sensor 710 under the subcutaneous tissue of the target object, thereby improving the stability of the medical device provided by the present invention during use.

[0069] Preferably, if Figure 2 and Figure 3 As shown, the second elastic member 600 is a spring, and the second elastic member 600 is arranged around the clamping member 120 and the first mounting seat 410. Therefore, by adopting a spring as the second elastic member 600, the overall structure of the needle aid provided by the present invention can be further simplified, and the cost can be effectively reduced. In addition, since the second elastic member 600 is arranged around the clamping member 120 and the first mounting seat 410, not only can the internal space of the needle aid be fully utilized, and the overall structure of the needle aid provided by the present invention be further simplified, but also the flexibility of the needle aid during use can be further improved, which is conducive to more rapid implantation of the sensor 710 under the skin of the target object. It should be noted that, as can be understood by those skilled in the art, the second elastic member 600 can also be other elastic members besides a spring, and the present invention is not limited to this.

[0070] Furthermore, if Figures 2 to 4As shown, a plurality of connecting pieces 420 are provided at the far end of the second shell 400, and a connecting platform 130 that cooperates with the connecting pieces 420 is provided on the inner wall of the first shell 100. The connecting platform 130 is close to the position of the pressing portion 200. Before the pressing portion 200 is triggered, the connecting piece 420 is connected to the connecting platform 130. After the pressing portion 200 is triggered, the connecting piece 420 can be detached from the connecting platform 130. Since the coupling platform 130 is close to the position of the pressing portion 200, when the pressing portion 200 is pressed inward toward the interior of the first shell 100 to trigger the pressing portion 200, the inwardly moving pressing portion 200 can push the coupling member 420 to detach from the coupling platform 130, thereby allowing the second shell 400 to move relative to the first shell 100, and further allowing the needle insertion assembly to move from a position away from the proximal end of the first shell 100 to a position close to the proximal end of the first shell 100, so as to implant the sensor 710 subcutaneously in the target object.

[0071] Preferably, if Figures 2 to 4 As shown, the first housing 100 is provided with a pair of opposing pressing portions 200, and the second housing 400 is provided with a pair of connecting members 420. The connecting members 420 are elastic members and are arranged one-to-one with the pressing portions 200. Thus, by providing two sets of pressing portions 200 and connecting members 420 arranged one-to-one, it is possible to ensure that the needle insertion assembly can be firmly fixed within the first housing 100 before the pressing portions 200 are triggered. It should be noted that although this article uses the example of the first housing 100 including two pressing portions 200 and the second housing 400 being provided with two connecting members 420, as will be understood by those skilled in the art, in other embodiments, the first housing 100 may also be provided with one pressing portion 200, three pressing portions 200, or more pressing portions 200, and the second housing 400 may be provided with one connecting member 420, three connecting members 420, or more connecting members 420, and the present invention is not limited thereto.

[0072] Furthermore, if Figures 2 to 4 As shown, the connecting piece 420 is provided with an inclined surface 421 on one side close to the pressing portion 200. Thus, this arrangement can further facilitate the installation of the second housing 400 from the proximal end of the first housing 100, making it easier to assemble.

[0073] Preferably, please refer to Figures 4 to 6 ,in Figure 5 The following schematically shows the three-dimensional structure of the needle assisting device provided by one embodiment of the present invention after completing the needle return action. Figure 6A schematic diagram of the first housing 100 provided in one embodiment of the present invention is schematically shown. Figures 4 to 6 As shown, the second housing 400 is provided with a slide groove 430 extending along the axial direction of the second housing 400 on both sides, and the slide groove 430 passes through the proximal end and the distal end of the second housing 400. The inner wall of the first housing 100 is provided with a slide rail 140 that cooperates with the slide groove 430. Therefore, by providing the slide groove 430 on both sides of the second housing 400 and the slide rail 140 on the inner wall of the first housing 100, it is ensured that after the pressing portion 200 is triggered, the slide groove 430 can slide along the slide rail 140, thereby ensuring that the needle insertion assembly can be smoothly moved from a position away from the proximal end of the first housing 100 to a position close to the proximal end of the first housing 100, so that the needle assist device provided by the present invention can smoothly and accurately implant the sensor 710 into the subcutaneous tissue of the target object, thereby improving the stability of the medical device provided by the present invention during use.

[0074] Furthermore, if Figure 5 As shown, a stopper 141 is provided at the proximal end of the slide rail 140. Thus, when the needle insertion assembly moves to a position close to the proximal end of the first housing 100, the stopper 141 prevents the needle insertion assembly from moving further downward and disengaging from the first housing 100, thereby ensuring that the needle assist device can be more easily removed from the target patient's skin after the needle return action is completed. Furthermore, because the stopper 141 prevents the needle insertion assembly from disengaging from the first housing 100, it prevents the second housing 400 from disengaging from the first housing 100 and exposing the implant needle 310, further reducing the risk of accidental injury to the implant needle 310.

[0075] Please continue to refer to Figure 6 and Figure 7 ,in Figure 7 The structural diagram of the pressing portion 200 provided in one embodiment of the present invention is schematically shown. Figure 6 and Figure 7As shown, the pressing portion 200 includes a main body 210 and first cantilevers 220 disposed on either side of the main body 210. The first cantilevers 220 extend outward along the length of the main body 210 and are connected to the inner wall of the first housing 100. The first housing 100 is provided with a first mounting hole 150 corresponding to the main body 210. The main body 210 is mounted within the first mounting hole 150 and is capable of reciprocating within the first mounting hole 150. Thus, the first cantilevers 220 facilitate the fixing of the pressing portion 200 to the first housing 100 through welding or other connection methods, effectively preventing the pressing portion 200 from detaching from the first housing 100 when pressed. It should be noted that, as will be understood by those skilled in the art, the first cantilevers 220 have a certain degree of elasticity, thereby allowing the pressing portion 200 to smoothly return to its initial configuration when the operator's hand leaves the pressing portion 200.

[0076] Preferably, if Figure 7 As shown, the first cantilever 220 is arranged in an arc shape, and a second mounting hole 221 is provided on the side of the first cantilever 220 away from the main body 210. The inner wall of the first shell 100 is provided with a mounting post 160 that cooperates with the second mounting hole 221. Because the first cantilever 220 is arranged in an arc shape, it is more convenient for the pressing portion 200 to smoothly return to its initial shape when the external force is withdrawn. In addition, because the second mounting hole 221 is provided on one side of the first cantilever 220 and the mounting post 160 is provided on the inner wall of the first shell 100, the second mounting hole 221 can be firmly fitted onto the mounting post 160 through welding or other connection methods, thereby fixing the pressing portion 200 to the first shell 100.

[0077] Preferably, if Figure 7 As shown, the main body 210 is a hollow structure, and an opening is provided on the side of the main body 210 close to the inner wall of the first shell 100, and a plurality of ribs 211 are provided on the inner wall of the main body 210 along its axial direction. Therefore, by setting the main body 210 as a hollow structure, the weight of the pressing part 200 can be reduced, further reducing costs. Since the main body 210 is provided with an opening on the side of the inner wall close to the first shell 100, not only can costs be further reduced, but it can also be more convenient to set up the connecting platform 130. In addition, since a plurality of ribs 211 are provided on the inner wall of the main body 210, the ribs 211 can reinforce the main body 210, thereby improving the stability of the overall structure of the pressing part 200.

[0078] Please continue to refer to Figure 8 , which schematically shows the structure of the needle holder 300 provided in one embodiment of the present invention. Figure 8 As shown, the needle holder 300 includes a fixing seat 320 and a plurality of guide posts 330 extending along the axial direction of the fixing seat 320 toward the proximal end of the first shell 100. The proximal end of the fixing seat 320 is provided with an opening, and the interior of the fixing seat 320 is provided with a connecting portion 321 provided along its axial direction. The distal end of the implant needle 310 is provided with a plurality of (for example, two) first clamping portions 311, and the connecting portion 321 is provided with a first clamping groove 3211 that cooperates with the first clamping portion 311. Therefore, the implant needle 310 can be fixed in the needle holder 300 more easily by clamping the first clamping portion 311 into the first clamping groove 3211. In addition, as shown in FIG. Figure 2 and Figure 8 As shown, a second accommodating space 340 for accommodating the first elastic member 500 can also be formed between the fixing seat 320 and the guide post 330. This not only further fully utilizes the internal volume of the needle-assisting device and further simplifies the overall structure of the needle-assisting device provided by the present invention, but also facilitates the installation of the first elastic member 500. It should be noted that although the present invention uses the example of the implant needle 310 including two first clamping portions 311 and the connecting portion 321 including two first clamping grooves 3211 as an example, as those skilled in the art will appreciate, in other embodiments, the implant needle 310 may include one first clamping portion 311, three first clamping portions 311, or more first clamping portions 311, and the connecting portion 321 may correspondingly include one first clamping groove 3211, three first clamping grooves 3211, or more first clamping grooves 3211, and the present invention is not limited thereto.

[0079] For further information, please refer to Figure 9 , which schematically shows the structure of the implant needle 310 provided in one embodiment of the present invention. Figure 9 As shown, the distal end of the implant needle 310 is provided with a plurality (e.g., two) of second cantilever arms 312. The second cantilever arms 312 extend outwardly along the axial direction of the implant needle 310, and the first engaging portion 311 is provided at the distal end of the second cantilever arms 312. Because the second cantilever arms 312 have a certain degree of elasticity, the provision of the second cantilever arms 312 and the provision of the first engaging portion 311 on the second cantilever arms 312 facilitate the insertion of the first engaging portion 311 into the first engaging slot 3211, thereby further facilitating assembly of the needle assist device.

[0080] Please continue to refer to Figure 2 、 Figure 10 and Figure 11 ,in Figure 10 A schematic structural diagram of a sensor assembly 700 provided in one embodiment of the present invention is shown schematically. Figure 11 A cross-sectional view of a sensor assembly 700 provided in one embodiment of the present invention is schematically shown. Figure 2 、 Figure 10 and Figure 11 As shown, the sensor assembly 700 also includes a base 730, a sensor 710, and a transmitter 720. The sensor 710 and the transmitter 720 are mounted on the base 730. The proximal end of the second housing 400 is provided with a second mounting seat 440 for releasably accommodating the base 730. The base 730 is detachably connected to the second mounting seat 440. Thus, by integrating the sensor 710 and the transmitter 720 on the same base 730, the structure of the sensor assembly 700 can be simplified, thereby further simplifying the overall structure of the medical device provided by the present invention. In addition, because the second housing 400 is provided with the second mounting seat 440, the sensor assembly 700 can be installed in the needle assist device by installing the base 730 in the second mounting seat 440. In addition, since the base 730 and the second mounting seat 440 are detachably connected, it is more convenient to separate the needle assist device from the sensor assembly 700 after the sensor 710 is implanted under the skin of the target object, so as to remove the needle assist device and leave the sensor assembly 700 on the skin of the target object, thereby continuously monitoring parameters such as blood sugar concentration.

[0081] Specifically, if Figure 11 As shown, the sensor assembly 700 is provided with a circuit board 740, and the sensor 710 and the transmitter 720 are both electrically connected to the circuit board 740. Thus, data detected by the sensor 710 can be transmitted to the transmitter 720 via the circuit board 740, so that the detected data can be sent to an external terminal device via the transmitter 720. More specifically, the sensor 710 is provided with a conductive element 711, so that the sensor 710 can be electrically connected to the circuit board 740 via the conductive element 711. It should be noted that, as will be understood by those skilled in the art, the base 730 is also provided with a battery, so that the battery can power the sensor 710 and the transmitter 720.

[0082] For further information, please refer to Figure 12 , which schematically shows a schematic diagram of the second shell 400 and the sensor assembly 700 provided in one embodiment of the present invention when they are separated from each other (the implantation needle is not shown). Figure 12As shown, a plurality of second slots 731 are provided on the outer periphery of the base 730 , and a second clamping portion 441 matching with the second slots 731 is provided on the inner wall of the second mounting seat 440 . Therefore, when the second clamping portion 441 is clamped into the second clamping groove 731, the sensor assembly 700 can be firmly fixed on the second shell 400, so that the needle assisting device can smoothly transport the sensor assembly 700 to the skin of the target object during the movement of the needle insertion assembly toward the proximal end of the first shell 100, so as to implant the sensor 710 subcutaneously into the target object; when the second clamping portion 441 is disengaged from the second clamping groove 731 by external force, the sensor assembly 700 can be smoothly separated from the second shell 400, so that the needle assisting device can be smoothly removed and the sensor assembly 700 can be retained on the skin of the target object. It can be seen that through the mutually cooperating second clamping groove 731 and the second clamping portion 441, the detachable connection between the needle assisting device and the sensor assembly 700 can be smoothly achieved.

[0083] Preferably, if Figure 10 and Figure 12 As shown, the proximal end of the base 730 is provided with a contact surface 750 extending outward along its circumference for contacting the target subject's skin. This contact surface 750 is provided with an adhesive tape. Thus, by providing the adhesive tape on the contact surface 750, the sensor assembly 700 can be securely adhered to the target subject's skin after being brought into proximity with the target subject's skin. When the needle inserter is removed, the adhesive tape's adhesion to the skin is greater than the retaining force of the second clamping portion 441 on the sensor assembly 700, allowing the sensor assembly 700 to remain on the target subject's skin after the needle inserter is removed. Furthermore, since the contact surface 750 extends outward relative to the base 730, the area of the contact surface 750 is effectively increased, further enhancing the adhesion between the adhesive tape and the target subject's skin. It should be noted that, as will be appreciated by those skilled in the art, in other embodiments, the sensor assembly 700 can be attached to the target subject's skin using any other common method.

[0084] For further information, please refer to Figure 9 、 Figure 10 、 Figure 13 and Figure 14 ,in Figure 13 A schematic diagram of the connection relationship between the sensor assembly 700 and the implant needle 310 provided in one embodiment of the present invention is shown schematically. Figure 14 for Figure 13 Cross-sectional view of . Figure 9 、 Figure 10 、 Figure 13 and Figure 14 As shown, the base 730 is provided with a through hole 732 for the implant needle 310 to pass through. The proximal end of the sensor 710 is provided with a pin 712, which extends through the through hole 732. The implant needle 310 is provided with a groove 313 along its axial direction for enclosing the pin 712. Thus, when the needle insertion assembly is moved to a position near the proximal end of the first housing 100, the implant needle 310 can smoothly implant the proximal end of the pin 712 subcutaneously under the action of the implant needle 310 to collect parameters such as blood glucose concentration.

[0085] Preferably, if Figure 10 and Figure 13 As shown, a resilient contact switch 760 is disposed within the through hole 732. When the needle holder 300 is secured within the first mounting seat 410, the resilient contact switch 760 is in an off state. When the needle holder 300 is released from the first mounting seat 410 and moved to a position proximate to the distal end of the first housing 100, the resilient contact switch 760 is in an on state. Thus, by providing the resilient contact switch 760, the sensor assembly 700 can automatically activate its signal transmission function upon completion of the needle return action without requiring an additional switch pressing portion 200 on the sensor assembly 700 or software control. This prevents power consumption during factory storage, thereby further simplifying the structure of the sensor assembly 700, making it smaller and more convenient to wear. Furthermore, the number of operating steps can be further reduced, making operation more convenient and prolonging the service life of the sensor assembly 700.

[0086] Specifically, please refer to Figure 15 , which schematically shows a schematic diagram of the elastic contact switch 760 provided in an embodiment of the present invention when it is in an off state. Figure 15As shown, the elastic contact switch 760 includes a pair of oppositely arranged conductive members 761, at least one of the two conductive members 761 is elastic, and the implant needle 310 includes a connected needle handle 314 and a needle body 315, and the needle handle 314 is made of insulating material. When the needle holder 300 is accommodated in the first mounting seat 410, one of the conductive members 761 abuts against one side of the needle handle 314, and the other conductive member 761 abuts against the other side of the needle handle 314, so that the elastic contact switch 760 is in an off state. When the needle holder 300 is released from the first mounting seat 410 and moves to a position close to the distal end of the first shell 100, the two conductive members 761 can contact each other, so that the elastic contact switch 760 is in an on state. Thus, when the needle holder 300 is accommodated in the first mounting seat 410, the two conductive members 761 are separated by the insulated needle handle 314 (the elastic conductive member 761 is in a compressed state), thereby enabling the elastic contact switch 760 to be in an off state. At this time, the circuit in the sensor assembly 700 is not connected, and the transmitter 720 and the sensor 710 cannot operate. When the needle holder 300 is released from the first mounting seat 410 and moves to a position close to the distal end of the first housing 100 (i.e., after completing the needle retraction action), the implant needle 310 withdraws from the sensor assembly 700, and the two conductive members 761 can contact each other under the action of the elastic force, thereby enabling the elastic contact switch 760 to be in a conducting state. At this time, the proximal end of the pin 712 is successfully implanted subcutaneously in the target subject, the circuit in the sensor assembly 700 is connected, and the transmitter 720 and the sensor 710 begin to operate.

[0087] Please continue to refer to Figure 16 , which schematically shows the structure of the elastic conductive member 761 provided by the first embodiment of the present invention. Figure 16 As shown, in this embodiment, the elastic conductive member 761 includes a connecting plate 7611, a telescopic member 7612, and a contact terminal 7613. The telescopic member 7612 is fixed to the connecting plate 7611, and the contact terminal 7613 is connected to the end of the telescopic member 7612 away from the connecting plate 7611. Under the action of the telescopic member 7612, the contact terminal 7613 can move away from the connecting plate 7611. Specifically, when the implant needle 310 is withdrawn from the sensor assembly 700, the contact terminal 7613 of the conductive member 761 can move away from the connecting plate 7611 under the action of the telescopic member 7612 until the conductive member 761 contacts another conductive member 761, thereby turning on the elastic contact switch 760.

[0088] Furthermore, if Figure 16 As shown, the telescopic member 7612 includes a hollow sleeve 76121 and a third elastic member 76122 disposed within the sleeve 76121. The sleeve 76121 is fixed to the connecting plate 7611. One end of the third elastic member 76122 is connected to the sleeve 76121, and the other end is connected to the contact terminal 7613. When the needle holder 300 is fixed in the first mounting seat 410, the third elastic member 76122 is in a compressed state. When the implant needle 310 is removed from the sensor assembly 700, the rebound force of the third elastic member 76122 causes the contact terminal 7613 to move away from the connecting plate 7611. Preferably, the third elastic member 76122 is a spring. Therefore, by using a spring as the third elastic member 76122, the structure of the sensor assembly 700 can be further simplified, effectively reducing costs. It should be noted that, as those skilled in the art can understand, in some other embodiments, the telescopic member 7612 may not include the sleeve 76121 but only include a third elastic member 76122. In this case, one end of the third elastic member 76122 is connected to the connecting plate 7611, and the other end is connected to the contact terminal 7613. By selecting a third elastic member 76122 with conductive properties, electrical conduction between the contact terminal 7613 and the connecting plate 7611 can be achieved.

[0089] Furthermore, if Figure 16 As shown, the connecting plate 7611 includes a first plate body 76111 and a second plate body 76112 connected to each other, wherein the first plate body 76111 is arranged along the radial direction of the through hole 732, and the second plate body 76112 is arranged along the axial direction of the through hole 732. The telescopic member 7612 is installed on the side of the second plate body 76112 away from the first plate body 76111. Therefore, this arrangement can further facilitate the installation of the conductive member 761.

[0090] Please continue to refer to Figure 17 , which schematically shows a schematic diagram of the elastic contact switch 760 provided in an embodiment of the present invention when it is in a conducting state. Figure 17 As shown, in this embodiment, the elastic contact switch 760 includes a conductive member 761a and a conductive member 761b, wherein the conductive member 761a is not elastic, that is, after the needle back action is completed, the conductive member 761a remains stationary, and the conductive member 761b is elastic, that is, after the needle back action is completed, the conductive member 761b can approach the conductive member 761a and contact the conductive member 761a, so that the elastic contact switch 760 is turned on. Specifically, as Figure 17As shown, in this embodiment, the conductive member 761b includes a connecting plate 7611b, a retractable member 7612b, and a contact terminal 7613b. The elastic conductive member 761b provided in this embodiment differs from the elastic conductive member 761 provided in the previous embodiment in that, in this embodiment, the retractable member 7612b and the contact terminal 7613b are an integrated structure. The retractable member 7612b is an inclined spring, and the contact terminal 7613b is formed by bending the end of the retractable member 7612b away from the connecting plate 7611b. Since the retractable member 7612b and the contact terminal 7613b are an integrated structure, the structure of the sensor assembly 700 can be further simplified, effectively reducing costs.

[0091] Please continue to refer to Figure 18 , which schematically shows a schematic diagram of the elastic contact switch 760 provided in another embodiment of the present invention when it is in the on state. Figure 18 As shown, in this embodiment, the elastic contact switch 760 includes a conductive member 761c and a conductive member 761d. Compared with the elastic contact switch 760 provided in the previous embodiment, the elastic contact switch 760 provided in this embodiment is different in that, in this embodiment, the conductive member 761c and the conductive member 761d are both elastic, and the structures of the conductive members 761c and 761d are similar to the structure of the conductive member 761b in the previous embodiment, so they will not be described in detail here.

[0092] Please continue to refer to Figure 19 and Figure 20 ,in Figure 19 A schematic diagram of the overall structure of a medical device provided by another embodiment of the present invention is shown schematically; Figure 20 Schematically given Figure 19 The schematic diagram of the exploded structure of the medical device shown in FIG. Figure 19 and Figure 20As shown, the medical device further includes a protective cover 800. The sensor assembly 700 and the needle insertion assembly are enclosed in a space enclosed by the first housing 100 and the protective cover 800. The protective cover 800 is detachably mounted on the proximal end of the first housing 100. Thus, by providing the protective cover 800, the sensor assembly 700 and the needle insertion assembly can be sealed inside the first housing 100, effectively preventing the needle insertion assembly and the sensor assembly 700 from being contaminated before use of the medical device. It can also effectively prevent the sharp implant needle 310 from accidentally injuring the operator or other personnel due to the accidental triggering of the pressing portion 200 before the protective cover 800 is removed. It should be noted that, as those skilled in the art will appreciate, before removing the protective cover 800, under the action of the protective cover 800, pressing the pressing portion 200 will not cause the needle insertion assembly to move from a position away from the proximal end of the first shell to a position close to the proximal end of the first shell; only after removing the protective cover 800 can the pressing portion 200 be pressed to move the needle insertion assembly from a position away from the proximal end of the first shell 100 to a position close to the proximal end of the first shell 100, so as to percutaneously implant the sensor 710 subcutaneously into the target object. In addition, it should be noted that, as those skilled in the art will appreciate, a snap-on detachable connection method or other detachable connection methods commonly used in the prior art can be adopted to achieve a detachable connection between the protective cover 800 and the first shell 100, and the present invention is not limited thereto.

[0093] Furthermore, if Figure 19 and Figure 20 As shown, when a tape is provided on the contact surface 750 of the sensor assembly 700, the release film of the tape mates with the distal end of the protective cover 800. This engagement can be achieved through double-sided tape or a mechanical connection. Thus, the release film protects the tape, ensuring its effectiveness. When the protective cover 800 is pulled outward, the release film can move with it, allowing it to separate from the tape.

[0094] Furthermore, if Figure 19 and Figure 20 As shown, the protective cover 800 is provided with a protective seat 810 corresponding to the implant needle 310. Thus, when the protective cover 800 is installed inside the first housing 100, the implant needle 310 wrapped around the pin 712 can be inserted into the protective seat 810, thereby sealing the implant needle 310 and the pin 712, effectively preventing the sharp implant needle 310 from accidentally injuring the operator or other personnel.

[0095] Please continue to refer to Figure 21 and Figure 22 ,in Figure 21 The overall structural diagram of a medical device provided by another embodiment of the present invention is schematically shown; Figure 22 Schematically given Figure 21 The partial structural diagram of the medical device shown in FIG. Figure 21 and Figure 22 As shown, the medical device further includes a sterilization box 900, and the sensor assembly 700 and the needle assist device are sterilized as a whole and installed in the sterilization box. Therefore, by covering the sterilization box 900 on the outside of the first shell 100, the needle insertion assembly, the sensor assembly 700 and other components of the medical device can be placed in a sterile environment before use, further preventing the needle insertion assembly, the sensor assembly 700 and other components from being contaminated. Specifically, as Figure 21 and Figure 22 As shown, the sterilization box 900 includes a box body 910 and a box cover 920 covering the box body 910. When the box cover 920 is opened (i.e., the box cover 920 is removed), the needle aid and sensor assembly 700 located in the box body 910 can be taken out without further assembly. The corresponding operation can be performed to percutaneously implant the sensor 710 subcutaneously into the target object, which is convenient and quick, and greatly avoids the contamination problem during the percutaneous implantation process. In addition, it should be noted that, as can be understood by those skilled in the art, it is also possible to assemble only a part of the sensor assembly 700 (at least including the sensor 710) with the needle aid and install it in the sterilization box 900. After the percutaneous implantation is completed, the sensor 710 is assembled with the other parts of the sensor assembly 700 (such as the transmitter 720) to detect parameters such as the blood glucose concentration in the target object's blood. The present invention is not limited to this.

[0096] In summary, compared with the prior art, the needle-assisting device and medical device for percutaneous implantation of a sensor provided by the present invention have the following advantages: since the needle-assisting device provided by the present invention includes a first shell and a needle insertion assembly, the needle insertion assembly is arranged inside the first shell and is used to carry the sensor assembly including the sensor; the needle insertion assembly includes a needle holder and a second shell, the needle holder is used to fix the implantation needle, the distal end of the second shell is provided with a first mounting seat for releasably accommodating the needle holder, and the proximal end of the second shell is used to be detachably connected to the sensor assembly; the first mounting seat is connected to a first elastic member arranged along the axial direction of the first shell, the distal end of the first elastic member is connected to the needle holder, and the proximal end of the first elastic member is connected to the proximal end of the first mounting seat; the first mounting seat includes a plurality of elastic members The elastic claws can form a first accommodating space for accommodating the needle holder and the first elastic member between the multiple elastic claws; the first shell includes a clamping member and a pressing portion, the clamping member is arranged inside the first shell and along the axial direction of the first shell, and before the needle insertion assembly approaches the proximal position of the first shell, the clamping member can be sleeved on the outside of the elastic claw to clamp the elastic claw; after triggering the pressing portion, the needle insertion assembly moves toward the proximal position close to the first shell to percutaneously implant the sensor into the subcutaneous tissue of the target object until the clamping member can be separated from the elastic claw so that the distal end of the elastic claw can be separated from the needle holder, and then the first elastic member causes the needle holder to automatically move toward the distal end of the first shell instantly. Thus, by triggering the pressing portion, the needle insertion assembly can be moved from a position away from the proximal end of the first shell to a position close to the proximal end of the first shell, thereby transporting the sensor assembly carrying the sensor to the skin surface of the target subject, and implanting the sensor percutaneously under the subcutaneous tissue of the target subject to detect parameters such as the blood glucose concentration in the target subject's blood. Since the needle holder is releasably accommodated in the first mounting seat, after the sensor is percutaneously implanted under the subcutaneous tissue of the target subject, the clamping member can be separated from the elastic claw, thereby enabling the distal end of the elastic claw to be separated from the needle holder, and then enabling the needle holder to automatically move toward the distal end of the first shell under the action of the rebound force of the first elastic member, thereby enabling the implant needle to instantly rebound into the first shell following the needle holder, effectively preventing the sharp implant needle from accidentally injuring the operator or other personnel. In summary, the needle aid provided by the present invention is not only simple in structure and low in cost, but also more convenient to operate. Since the medical device provided by the present invention includes the needle assisting device described above, it has all the advantages of the medical device described above, and therefore no further details will be given.

[0097] In addition, in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in several embodiments or examples of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0098] The above description is merely a description of preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes or modifications made by persons skilled in the art based on the above disclosure are within the scope of protection of the present invention. Obviously, various modifications and variations may be made by persons skilled in the art without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the present invention and its equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A medical device, characterized in that: The device comprises a sensor assembly and a needle assisting device, wherein the sensor assembly comprises a sensor and a transmitter; The sensor assembly is provided with a through hole, and the proximal end of the sensor is provided with a pin, and the pin extends through the through hole; The needle assist device includes a first housing and a needle insertion assembly disposed inside the first housing. The needle insertion assembly is used to carry the sensor assembly. The needle insertion assembly includes an implantation needle for passing through the through hole. The implantation needle is provided with a groove along its axial direction for wrapping at least a portion of the lead. After the lead is percutaneously implanted subcutaneously in the target subject, the implantation needle automatically rebounds into the first housing. An elastic contact switch is further provided in the through hole. When the implant needle rebounds into the first housing, the elastic contact switch changes from an off state to an on state, so that the transmitter can receive the detection result of the sensor and send the detection result out. The needle insertion assembly includes a needle holder and a second housing, wherein the needle holder is used to fix the implant needle; The distal end of the second housing is provided with a first mounting seat for releasably accommodating the needle holder, and the proximal end of the second housing is used to be detachably connected to the sensor assembly. When the lead is percutaneously implanted subcutaneously in the target subject, the needle holder can be released from the first mounting seat and move toward the distal end of the first housing, so that the implant needle can automatically rebound into the first housing instantly. The first mounting seat is connected to a first elastic member arranged along the axial direction of the first housing, the distal end of the first elastic member is connected to the needle holder, and the proximal end of the first elastic member is connected to the proximal end of the first mounting seat; The first mounting seat includes a plurality of elastic claws, and a first accommodating space for accommodating the needle holder and the first elastic member can be formed between the plurality of elastic claws; The first housing includes a clamping member and a pressing portion. The clamping member is disposed inside the first housing and along the axial direction of the first housing. Before the needle insertion assembly approaches the proximal end of the first housing, the clamping member can be sleeved on the outside of the elastic claw to clamp the elastic claw. After triggering the pressing part, the needle insertion assembly moves toward the proximal position close to the first shell to percutaneously implant the sensor under the skin of the target object until the clamping member can be separated from the elastic claw, so that the distal end of the elastic claw can be separated from the needle holder, and then the first elastic member causes the needle holder to automatically move toward the distal end position of the first shell in an instant.

2. The medical device according to claim 1, wherein The elastic contact switch includes a pair of oppositely arranged conductive members, at least one of which is elastic. The implant needle includes a connected needle handle and a needle body, and the needle handle is made of insulating material. When the needle holder is accommodated in the first mounting seat, one of the conductive members abuts against one side of the needle handle, and the other conductive member abuts against the other side of the needle handle, so that the elastic contact switch is in an off state. When the needle holder is released from the first mounting seat and moves to a position close to the distal end of the first shell, the two conductive members can contact each other, so that the elastic contact switch is in an on state.

3. The medical device according to claim 2, wherein The elastic conductive part includes a connecting plate, a telescopic part and a contact terminal. The telescopic part is fixed to the connecting plate, and the contact terminal is connected to the end of the telescopic part away from the connecting plate. Under the action of the telescopic part, the contact terminal can move toward a position away from the connecting plate until it contacts another conductive part, so that the elastic contact switch is turned on.

4. The medical device according to claim 3, characterized in that The telescopic member includes a hollow sleeve and a third elastic member arranged in the sleeve. The sleeve is fixed to the connecting plate. One end of the third elastic member is connected to the sleeve, and the other end of the third elastic member is connected to the contact terminal.

5. The medical device according to claim 3, wherein The connecting plate includes a first plate body and a second plate body connected to each other. The first plate body is arranged along the radial direction of the through hole, and the second plate body is arranged along the axial direction of the through hole. The telescopic member is installed on a side of the second plate body away from the first plate body.

6. The medical device according to claim 3, characterized in that The telescopic member and the contact terminal are an integrated structure, wherein the telescopic member is an obliquely arranged spring piece, and the contact terminal is formed by bending an end of the telescopic member away from the connecting plate.

7. The medical device according to claim 1, wherein The proximal end of the sensor assembly is provided with a contact surface extending outward along its circumference for contacting the skin of a target object, and an adhesive sticker is provided on the contact surface.

8. The medical device according to claim 7, characterized in that The medical device also includes a protective cover. The sensor assembly and the needle insertion assembly are encapsulated in a space formed by the first shell and the protective cover. The protective cover is detachably mounted on the proximal end of the first shell. The distal end of the protective cover is provided with a release film that cooperates with the adhesive tape.

9. The medical device according to any one of claims 1 to 8, characterized in that The medical device further comprises a sterilization box, wherein the sensor assembly and the needle assisting device are sterilized and installed in the sterilization box.

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