Applicator

Abstract

The application discloses a patch, which comprises a first shell, a second shell partially accommodated in the first shell, a pushing block slidingly connected to the first shell, a first elastic member installed between the pushing block and the first shell in a pre-compressed mode, and an analyte sensor installed on the pushing block, wherein a trigger member is arranged on a top wall of the first shell facing the second shell, and a limiting member is arranged on the second shell; the trigger member and the limiting member can be simultaneously abutted by the trigger cooperating member to lock the pushing block to the second shell; the trigger member can drive the trigger cooperating member to be separated from the limiting member under the driving of the first shell, so that the pushing block can drive the analyte sensor to be ejected from the second shell under the pushing of the first elastic member in the pre-compressed state. Thus, the patch is free of buttons outside, which not only saves the setting of the unlocking safety device matched with the buttons, but also maintains the continuity and beauty of the appearance of the patch; in addition, the stability of the user when using the patch can be improved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to an applicator. Background Technology

[0002] An applicator is a tool used to help an analytical sensor be worn by a user.

[0003] Currently, the buttons used to trigger the ejection and insertion of the analyte sensor in existing applicators are usually exposed on the applicator itself. However, since the button's placement clearly guides the user to touch and press it, an additional safety device is needed to prevent accidental activation and insertion of the analyte sensor. This would add an extra step of unlocking the safety device. Furthermore, the exposed button creates a discontinuous and abrupt appearance on the applicator, affecting its overall aesthetics. Summary of the Invention

[0004] In view of this, it is necessary to provide an applicator for solving the above-mentioned technical problems.

[0005] An applicator, the applicator comprising:

[0006] The housing includes a first housing and a second housing, wherein the second housing is partially housed within the first housing, wherein the first housing has a trigger on a top wall facing the second housing, and the second housing has a limiting member;

[0007] A push block is slidably connected to the second housing, wherein the push block is provided with a trigger engagement component.

[0008] The first elastic element is pre-compressed and installed between the push block and the first housing.

[0009] An analytical sensor is mounted on the push block;

[0010] The trigger engagement member can simultaneously abut against both the trigger member and the limiting member to lock the push block onto the second housing; the trigger member, driven by the first housing, can cause the trigger engagement member to disengage from the limiting member, so that the push block, under the push of the first elastic member in a pre-compressed state, can cause the analyte sensor to pop out from the second housing.

[0011] Understandably, by placing the trigger for locking / unlocking the push block and the second housing on a top wall of the first housing facing the second housing, and then using a pre-compressed first elastic element to drive the push block and the analyzer sensor to pop out, the applicator can be buttonless. This eliminates the need for a matching button unlocking safety device and maintains the continuity and aesthetics of the applicator's appearance. In addition, the push block's action on the analyzer sensor to pop out from the second housing is not affected by pressing the top wall, thus improving the stability of the applicator when used by the user.

[0012] In one embodiment, there is positional interference between the trigger and the trigger mating member;

[0013] The trigger engagement member has a first state and a second state. In the first state, the trigger engagement member is limited by the limiting member. In the second state, the trigger engagement member can disengage from the limiting member under the push of the trigger member.

[0014] In one embodiment, one of the trigger member and the trigger mating member is provided with a protruding hook, and the other is provided with a groove, wherein the hook can engage with the groove.

[0015] In one embodiment, the top wall is further provided with a latching member, and the second housing is provided with a latching engagement member. Along the movement direction of the trigger member, the latching member abuts against the latching engagement member, and the latching member can be driven by the top wall to cause the latching member and / or the latching engagement member to undergo elastic deformation.

[0016] It is understandable that the trigger controls the unlocking between the second housing and the push block by the elastic deformation of the snap fastener and / or the snap-fit ​​component. In this way, the applicator can be designed differently according to different user needs, making it easier for users to operate.

[0017] In one embodiment, the first housing is further provided with a first positioning member, and the second housing is provided with a first positioning engagement member. Along the movement direction of the trigger member, the first positioning member and the first positioning engagement member are slidably engaged.

[0018] In one embodiment, the push block is further provided with a second positioning member, and the second housing is provided with a second positioning engagement member. Along the movement direction of the trigger member, the second positioning member and the second positioning engagement member slide into each other.

[0019] In one embodiment, the applicator further includes a retraction block movably mounted on the push block;

[0020] The analyte sensor has a probe, and the retraction block is provided with an auxiliary needle. The auxiliary needle forms an inwardly accommodating cavity, and the probe is housed within the accommodating cavity.

[0021] It is understandable that the auxiliary needle on the retraction block is used to assist the probe on the analyzer sensor in inserting into the user's subcutaneous tissue. In this way, the probe on the analyzer sensor can be protected during the implantation process in the user's subcutaneous tissue, preventing the probe from being damaged by pressure.

[0022] In one embodiment, the applicator further includes a second elastic element, which is pre-compressed and mounted between the retraction block and the push block;

[0023] The push block is also provided with an elastic claw, which can abut against the inner peripheral wall of the second housing; wherein, there is positional interference between the elastic claw and the retraction block, and the elastic claw is configured to elastically deform in a direction away from the retraction block in response to the pushing of the retraction block.

[0024] Understandably, using a pre-compressed second elastic element to automatically retract the retraction block into the applicator prevents physical injury and visual impact to the user from the auxiliary needle being exposed.

[0025] In one embodiment, the elastic claw has a pushing ramp that abuts against the retracting block along the direction of movement of the retracting block relative to the pushing block.

[0026] In one embodiment, a groove is provided on the outer peripheral wall of the retracting block, and the elastic claw slides in cooperation with the groove along the direction of movement of the retracting block relative to the pushing block.

[0027] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0028] The applicator of the present invention has a trigger for locking / unlocking the push block and the second housing located on a top wall of the first housing facing the second housing. A pre-compressed first elastic member is used to drive the push block and the analyzer sensor to pop out. In this way, there are no buttons on the outside of the applicator. This not only eliminates the need for a matching button unlocking safety device, but also maintains the continuity and aesthetics of the applicator's appearance. In addition, the push block driving the analyzer sensor to pop out of the second housing is not affected by the trigger when the top wall is pressed, thus improving the stability of the applicator when used by the user. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of an applicator provided in one embodiment of this application;

[0031] Figure 2 This is an exploded view of an applicator provided in an embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the structure of the first shell in this application;

[0033] Figure 4 This is a schematic diagram of the structure when the second housing and the push block are assembled in this application;

[0034] Figure 5 This is a schematic diagram of the assembly of the push block, the analyzer sensor, and the retraction block in this application.

[0035] Figure 6 This is a schematic diagram of the structure when the push block and the analyte sensor are assembled in this application;

[0036] Figure 7 This is a schematic diagram of the rollback block in this application;

[0037] Figure 8 This is a schematic diagram of the structure of the applicator provided in an embodiment of this application in its initial state;

[0038] Figure 9 for Figure 8 Enlarged view of the middle P section;

[0039] Figure 10 This is a schematic diagram of the structure of the top arm of the first housing in an applicator provided in an embodiment of this application when it is pressed;

[0040] Figure 11 This is a schematic diagram of the structure of the applicator provided in an embodiment of the present application when the push block is fully ejected from the second housing;

[0041] Figure 12 for Figure 11 Enlarged view of the middle Q section;

[0042] Figure 13 This is a schematic diagram of the structure of the retraction block in the applicator provided in an embodiment of this application when it has completed its retraction.

[0043] Figure 14This is a schematic diagram of the structure of the applicator provided in an embodiment of this application when used by a user.

[0044] Figure 15 This is a schematic diagram of the structure of the patch provided in an embodiment of this application when the probe on the analyzer sensor is implanted into the user.

[0045] Reference numerals: 100, applicator; 10, first housing; 101, top wall; 11, trigger element; 111, hook; 1111, first inclined surface; 1112, second inclined surface; 12, fastening element; 121, protruding tooth; 1211, inclined surface; 13, first positioning element; 20, second housing; 201, inner peripheral wall; 21, limiting element; 22, fastening engagement element; 221, stop beam; 23, first positioning engagement element; 24, second positioning engagement element ; 241, Through hole; 30, Push block; 301, Protruding buckle; 31, Trigger mating part; 311, Slot; 3111, Slot wall; 32, Second positioning part; 33, Limiting hook; 34, Elastic claw; 341, Pushing slope; 40, First elastic element; 50, Analyte sensor; 51, Probe; 60, Retracting block; 61, Auxiliary needle; 611, Receiving cavity; 62, Peripheral wall; 621, Slide groove; 70, Second elastic element; 80, Shell cover. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0049] like Figure 14 , Figure 15As shown, the patch 100 claimed in this application is used to implant the probe 51 on the analyte sensor 50 into the user's subcutaneous tissue.

[0050] like Figure 2 , Figure 9 As shown, an embodiment of the patch 100 provided in this application includes a housing, a pusher block 30, a first elastic member 40, and an analyzer sensor 50. The housing includes a first housing 10 and a second housing 20, with the second housing 20 partially housed within the first housing 10. The first housing 10 has a trigger member 11 on a top wall 101 facing the second housing 20, and the second housing 20 has a limiting member 21. The pusher block 30 is slidably connected to the second housing 20, and the pusher block 30 has a trigger engagement member 31. The first elastic member... 40 is pre-compressed and installed between the push block 30 and the first housing 10; the analyzer sensor 50 is installed on the push block 30; wherein, the trigger engagement 31 can simultaneously abut against the trigger 11 and the limiting member 21 to lock the push block 30 onto the second housing 20; the trigger 11 can drive the trigger engagement 31 to disengage from the limiting member 21 under the action of the first housing 10, so that the push block 30 can drive the analyzer sensor 50 to pop out from the second housing 20 under the push of the first elastic member 40 in the pre-compressed state.

[0051] It should be noted that the aforementioned analyte sensor 50 can be embedded in the push block 30 and limited by the protrusion 301 on the push block 30. This prevents the analyte sensor 50 from falling off the push block 30 under the action of gravity. When the push block 30 is locked on the second housing 20, the first elastic member 40 is kept in a pre-compressed state between the first housing 10 and the push block 30. When the trigger engagement member 31 is pushed off the limiting member 21 by the trigger member 11 and the abutment between the limiting member 21 and the trigger engagement member 31 is released, the lock of the push block 30 on the second housing 20 can be released. At this time, the pre-compressed first elastic member 40 can push the push block 30, so that the push block 30 drives the analyte sensor 50 to pop out from the second housing 20.

[0052] It is understandable that the trigger 11 for locking / unlocking the push block 30 and the second housing 20 is set on a top wall 101 of the first housing 10 facing the second housing 20, and the push block 30 and the analyzer sensor 50 are driven to pop out by the pre-compressed first elastic member 40. In this way, there are no buttons on the outside of the applicator 100. This not only eliminates the need for a matching button unlocking safety device, but also maintains the continuity and aesthetics of the applicator 100. In addition, the unlocking control between the second housing 20 and the push block 30 and the push block 30 driving the analyzer sensor 50 to pop out of the second housing 20 are independent of each other and do not affect each other. In this way, the stability of the applicator 100 when the user uses it can be improved, and the different pressing pressure when pressing the top wall 101 of the first housing 10 will not affect the popping of the push block 30 from the second housing 20.

[0053] like Figure 8 , Figure 9 As shown, in some embodiments, there is positional interference between the trigger member 11 and the trigger mating member 31. The trigger mating member 31 has a first state and a second state. In the first state, the trigger mating member 31 is limited by the limiting member 21. At this time, the push block 30 can be locked onto the second housing 20 through the cooperation between the trigger mating member 31 and the trigger member 11. In the second state, the trigger mating member 31 can disengage from the limiting member 21 under the push of the trigger member 11. At this time, the trigger mating member 31 can elastically deform relative to the trigger member 11 under the push of the trigger member 11 to disengage from the trigger member 11 and release the push block 30 from the second housing 20. In other words, the push block 30 and the second housing 20 are locked together through the abutment between the trigger mating member 31 and the limiting member 21. When the trigger mating member 31 moves relative to the limiting member 21 under the push of the trigger member 11, the trigger mating member 31 can disengage from the limiting member 21, thus releasing the push block 30 from the second housing 20.

[0054] It should be noted that the aforementioned limiting member 21 can abut against the trigger mating member 31. Specifically, the portion of the trigger mating member 31 that passes through the first housing 10 can abut against the limiting member 21. There are two trigger mating members 31, which are symmetrically arranged on both sides of the limiting member 21.

[0055] like Figure 9 As shown, in some embodiments, one of the trigger member 11 and the trigger mating member 31 is constructed with a protruding hook 111, and the other is constructed with a groove 311. The hook 111 can engage with the groove 311 to form position interference.

[0056] For example, the hook 111 is disposed on the trigger member 11, and the slot 311 is disposed on the trigger mating member 31. The hook 111 has a first inclined surface 1111 and a second inclined surface 1112. The first inclined surface 1111 and the second inclined surface 1112 are disposed on both sides of the hook 111 and can respectively abut against the groove wall 3111 of the slot 311. Thus, the push block 30, under the push of the pre-compressed first elastic member 40, has a driving force to move relative to the first housing 10, causing the first inclined surface 1111 on the hook 111 to abut against the corresponding groove wall 3111 of the slot 311 on the trigger engagement member 31. This can drive the trigger engagement member 31 to elastically deform in the direction of the limiting member 21. At this time, the limiting member 21 abuts against the trigger engagement member 31 and restricts the elastic deformation of the trigger engagement member 31, thereby locking the push block 30 on the first housing 10. At the same time, by utilizing the abutment between the first inclined surface 1111 on the hook 111 and the corresponding groove wall 3111 on the slot 311, the push block 30 can be locked on the first housing 10, and the first elastic member 40 is kept in a pre-compressed state. Then, when the user presses the top wall 101 of the first housing 10 and drives the trigger 11 to move, the second inclined surface 1112 of the hook 111 on the trigger 11 can push against the corresponding groove wall 3111 of the slot 311 on the trigger mating part 31, so that the push block 30 moves relative to the second housing 20 along the movement direction of the trigger 11, and the trigger mating part 31 disengages from the limiting part 21. During this process, the trigger mating part 31 will undergo elastic deformation in the direction of the limiting part 21 and disengage from the hook 111, that is, the lock between the push block 30 and the first housing 10 is released. In this way, the push block 30 can drive the analyzer sensor 50 to pop out from the second housing 20 under the push of the pre-compressed first elastic part 40. Of course, for those skilled in the art, the hook can also be set on the trigger mating part 31 and the slot can be set on the trigger 11.

[0057] It should be noted that when the user uses the applicator 100, the applicator 100 needs to first be placed against the user's subcutaneous tissue, that is, the second housing 20 is attached to and limited by the user's subcutaneous tissue; while the aforementioned push block 30 is pushed downward by the pre-compressed first elastic member 40 and pops out of the second housing 20, specifically meaning that the push block 30 moves towards the user's subcutaneous tissue and detaches from the second housing 20.

[0058] like Figure 3 , Figure 4As shown, in some embodiments, the top wall 101 is further provided with a latching member 12, and the second housing 20 is provided with a latching engagement member 22. Along the movement direction of the trigger member 11, the latching member 12 abuts against the latching engagement member 22, and the latching member 12 can be driven by the top wall 101 to cause the latching member 12 and / or the latching engagement member 22 to undergo elastic deformation. That is to say, when the top wall 101 drives the trigger member 11 to move, it needs to overcome the abutment limit between the latching member 12 and the latching engagement member 22. In other words, the pressing force of the user when pressing the top wall 101 needs to be greater than the force required for the latching member 12 and / or the latching engagement member 22 to undergo elastic deformation. In this way, the applicator 100 can be designed differently according to different user needs, making it easier for users to operate.

[0059] For example, the latching member 12, driven by the top wall 101, can cause the latching mating member 22 to undergo elastic deformation. Therefore, the structural strength of the latching mating member 22 can be adjusted by changing its size, wall thickness, etc., thereby driving the applicator 100 to eject the push block 30 from the second housing 20 under different pressing pressures. Of course, those skilled in the art will also understand that the latching member 12, driven by the top wall 101, can also undergo elastic deformation, or that the latching member 12 and the latching mating member 22 can undergo elastic deformation simultaneously; this will not be elaborated upon here.

[0060] like Figure 3 , Figure 4 As shown, the snap-fit ​​component 22 is configured as a door frame structure. The snap-fit ​​component 12 has multiple protrusions 121, which are arranged sequentially along the movement direction of the trigger component 11. When the applicator 100 is in the initial state, the stop beam 221 on the snap-fit ​​component 22 is engaged between two adjacent protrusions 121. In this way, the assembly limit of the first housing 10 on the second housing 20 can be achieved, preventing the first housing 10 from detaching from the second housing 20. Afterward, when the snap-fit ​​component 12 can push the snap-fit ​​component 22 with the inclined surface 1211 on the protrusions 121 under the action of the top wall 101, the push of the snap-fit ​​component 22 by the inclined surface 1211 can cause the snap-fit ​​component 22 to undergo elastic deformation, and allow the protrusions 121 on the snap-fit ​​component 12 located outside the stop beam 221 to bypass the stop beam 221 and move into the snap-fit ​​component 22. Of course, those skilled in the art can also set the buckle 12 as a door frame structure, and the buckle mating part 22 has protruding teeth arranged sequentially along the movement direction of the trigger 11, which will be elaborated here.

[0061] As can be seen from the above, the fastener 12 and the fastener 22 correspond one-to-one. The number of fasteners 12 on the first housing 10 of this application is specifically set to three. The three fasteners 12 are arranged at intervals along the circumferential direction of the first housing 10. Of course, in other embodiments, the number of fasteners 12 can also be set to two, four, five, or even more.

[0062] like Figure 3 , Figure 4 As shown, in some embodiments, the first housing 10 is further provided with a first positioning member 13, and the second housing 20 is provided with a first positioning engagement member 23. Along the movement direction of the trigger member 11, the first positioning member 13 and the first positioning engagement member 23 are slidably engaged. In this way, the relative rotation between the first housing 10 and the second housing 20 can be restricted, so that when the user uses the applicator 100, the applicator 100 can only be triggered by pressing the top wall 101 of the first housing 10.

[0063] like Figures 4 to 6 As shown, in some embodiments, the push block 30 is further provided with a second positioning member 32, and the second housing 20 is provided with a second positioning engagement member 24. Along the movement direction of the trigger member 11, the second positioning member 32 and the second positioning engagement member 24 are slidably engaged. In this way, the rotational movement of the push block 30 relative to the second housing 20 can be restricted when it pops out from the second housing 20.

[0064] For example, the second positioning member 32 is disposed through the second housing 20, and the second positioning mating member 24 is configured to match the through hole 241 of the second positioning member 32. The circumferential positioning of the push block 30 on the second housing 20 is achieved by the abutment between the second positioning member 32 and the hole wall (not shown) of the through hole 241.

[0065] like Figures 4 to 6 As shown, in some embodiments, the push block 30 is also provided with a limiting hook 33, which penetrates the second housing 20. The limiting hook 33 can move relative to the second housing 20 under the drive of the push block 30 and hook onto the second housing 20. This can limit the maximum movement stroke of the push block 30 when it pops out of the second housing 20, thus preventing the push block 30 from detaching from the second housing 20. During the process of the push block 30 driving the analyzer sensor 50 to pop out of the second housing 20, when the push block 30 can be limited to the second housing 20 by the limiting hook 33, the analyzer sensor 50 will continue to move and detach from the push block 30. In this way, the probe 51 on the analyzer sensor 50 can be implanted into the user's subcutaneous tissue.

[0066] As can be seen from the above, the first elastic element 40 is applied inside the applicator 100 to elastically push the push block 30. Therefore, the first elastic element 40 can be set as a spring. Of course, for those skilled in the art, the first elastic element 40 can also be set as a rubber sleeve, corrugated tube, etc. with higher elasticity.

[0067] It is understood that the probe 51 on the analyte sensor 50 is used to be implanted in the user's subcutaneous tissue for detecting analytes in the user's body. These analytes may specifically include glucose concentration, acetylcholine, amylase, bilirubin, cholesterol, human chorionic gonadotropin (hCG), creatine kinase (e.g., CK-MB), creatine, DNA, fructosamine, glucose, glutamine, growth hormone, hormones, ketones, lactate, peroxides, prostate-specific antigen (PSA), prothrombin, RNA, thyroid-stimulating hormone (TSH), and / or troponin. Of course, the analyte sensor 50 can also be used to monitor drug concentrations, such as antibiotics (e.g., gentamicin, vancomycin, etc.), digoxin, disused drugs, theophylline, and warfarin.

[0068] like Figure 5 , Figure 7 As shown, in some embodiments, the applicator 100 further includes a retraction block 60, which is movably mounted on the push block 30. The analyte sensor 50 has a probe 51, and the retraction block 60 is provided with an auxiliary needle 61. The auxiliary needle 61 forms an inwardly accommodating cavity 611, in which the probe 51 is housed. This protects the probe 51 on the analyte sensor 50 during implantation into the user's subcutaneous tissue, preventing damage from pressure. It should be noted that the auxiliary needle 61 on the retraction block 60 extends outward relative to the probe 51. This allows the auxiliary needle 61 to insert into the user's subcutaneous tissue first during implantation, effectively protecting the probe 51.

[0069] For example, the retraction block 60 is mounted on the side of the push block 30 away from the analyte sensor 50, and the auxiliary pin 61 on the retraction block 60 can pass through the push block 30 and at least partially wrap around the probe 51, so that the push block 30 can simultaneously drive the analyte sensor 50 and the retraction block 60 to pop out from the second housing 20 under the push of the first elastic member 40.

[0070] like Figure 2 , Figure 8 , Figure 10 , Figure 11 and Figure 13As shown, in some embodiments, the applicator 100 further includes a second elastic element 70, which is pre-compressed and installed between the retraction block 60 and the push block 30. The push block 30 is also provided with an elastic claw 34, which can abut against the inner peripheral wall 201 of the second housing 20. There is positional interference between the elastic claw 34 and the retraction block 60, and the elastic claw 34 is designed to elastically deform in response to the pushing of the retraction block 60, moving away from the retraction block 60. Thus, the pre-compressed second elastic element 70 can be used to automatically retract the retraction block 60 into the applicator 100, preventing physical injury and visual impact to the user due to the exposed auxiliary needle 61. It should be noted that the second elastic element 70 is analogous to the first elastic element 40; therefore, the second elastic element 70 can also be a spring, a highly elastic rubber sleeve, a bellows, etc.

[0071] For example, the elastic claw 34 has a pushing ramp 341, which abuts against the retracting block 60 and forms position interference along the direction of movement of the retracting block 60 relative to the pushing block 30.

[0072] It is understood that the retracting block 60 tends to move relative to the pushing block 30 under the pushing of the pre-compressed second elastic member 70. This allows the elastic claw 34 to have an outward expansion elastic deformation tendency under the drive of the retracting block 60. Since the pushing block 30 compresses the first elastic member 40 and is housed in the second housing 20, the inner peripheral wall 201 of the second housing 20 will abut against the elastic claw 34 and restrict the outward expansion deformation of the elastic claw 34. This allows the applicator 100 to be in its initial state, with the elastic claw 34 on the pushing block 30 restricted by the abutment of the inner peripheral wall 201 of the second housing 20. Positioned on the retraction block 60, the retraction block 60 is kept compressed by the pushing slope 341 on the elastic claw 34, thus compressing the second elastic member 70. When the push block 30 is pushed off the second housing 20 by the first elastic member 40, the elastic claw 34 will disengage from the inner peripheral wall 201 of the second housing 20 under the action of the push block 30, and the inner peripheral wall 201 will release the lock of the elastic claw 34 to expand and deform outward. Then, the retraction block 60 can disengage from the push block 30 under the push of the pre-compressed second elastic member 70, and the retraction block 60 will automatically retract.

[0073] like Figure 7 As shown, in some embodiments, a groove 621 is provided on the outer peripheral wall 62 of the retraction block 60. The elastic claw 34 slides and engages with the groove 621 along the direction of movement of the retraction block 60 relative to the push block 30, thereby achieving circumferential positioning between the retraction block 60 and the push block 30.

[0074] In addition, such as Figure 1As shown, in some embodiments, the applicator 100 also includes a cover 80, which is detachably connected to the first housing 10. For example, the cover 80 can be assembled onto the first housing 10 by means of threads or snaps. In this way, the cover 80 can be used to cover the first housing 10, so that the applicator 100 as a whole can present a closed structure, which facilitates the packaging and transportation of the applicator 100 as a whole, and can also prevent the external environment from contaminating the auxiliary needle 61 and the probe 51.

[0075] In summary, as Figure 8 , Figure 10 , Figure 11 and Figure 13 As shown, when using the applicator 100, the user can press the top wall 101 of the first housing 10 to drive the movement of the trigger 11. The trigger 11 pushes against the trigger mating member 31, releasing the locking of the push block 30 on the second housing 20. Under the push of the pre-compressed first elastic member 40, the push block 30 can cause the analyzer sensor 50 and the retraction block 60 to pop out of the second housing 20, allowing the auxiliary needle 61 and probe 51 on the retraction block 60 to be implanted into the user's subcutaneous tissue. Simultaneously, the elastic claw 34 follows the push block 30 out of the second housing 20, releasing the restriction of the inner peripheral wall 201 of the second housing 20 on the outward expansion and deformation of the elastic claw 34. That is, the locking between the retraction block 60 and the push block 30 is released. Thus, under the push of the pre-compressed second elastic member 70, the retraction block 60 can detach upward from the push block 30 and retract into the second housing 20. In other words, when using the applicator 100, the user can automatically implant the probe on the analyzer sensor 50 and automatically retract the auxiliary needle 61 on the retraction block 60 by pressing the top wall 101 of the first housing 10 and using the first elastic element 40 and the second elastic element 70.

[0076] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any appropriate changes and variations made to the above embodiments within the essential spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An applicator, characterized in that, The applicator includes: The housing includes a first housing (10) and a second housing (20), the second housing (20) being partially housed within the first housing (10), wherein the first housing (10) has a trigger (11) on a top wall (101) facing the second housing (20), and the second housing (20) has a limiting member (21). A push block (30) is slidably connected to the second housing (20), wherein the push block (30) is provided with a trigger engagement member (31). The first elastic element (40) is pre-compressed and installed between the push block (30) and the first housing (10); An analytical sensor (50) is mounted on the push block (30); The trigger engagement member (31) can simultaneously abut against the trigger member (11) and the limiting member (21); the trigger member (11) can drive the trigger engagement member (31) to disengage from the limiting member (21) under the drive of the first housing (10). There is positional interference between the trigger (11) and the trigger mating member (31); wherein the trigger mating member (31) has a first state and a second state. In the first state, the trigger mating member (31) is limited by the limiting member (21) so that the push block (30) can be locked onto the second housing (20) under the cooperation between the trigger mating member (31) and the trigger (11); in the second state, the trigger mating member (31) can make elastic deformation relative to the trigger (11) under the push of the trigger (11) so as to disengage from the limiting member (21) and release the lock of the push block (30) on the second housing (20).

2. The applicator according to claim 1, characterized in that, One of the triggering element (11) and the triggering mating element (31) is constructed with a protruding hook (111), and the other is constructed with a slot (311). The hook (111) can engage with the slot (311).

3. The applicator according to claim 1, characterized in that, The top wall (101) is also provided with a fastener (12), and the second housing (20) is provided with a fastening engagement member (22). Along the movement direction of the trigger member (11), the fastener (12) abuts against the fastening engagement member (22), and the fastener (12) can be driven by the top wall (101) to cause the fastener (12) and / or the fastening engagement member (22) to undergo elastic deformation.

4. The applicator according to claim 1, characterized in that, The first housing (10) is further provided with a first positioning member (13), and the second housing (20) is provided with a first positioning fitting member (23). Along the movement direction of the trigger member (11), the first positioning member (13) and the first positioning fitting member (23) are slidably engaged.

5. The applicator according to claim 1, characterized in that, The push block (30) is also provided with a second positioning member (32), and the second housing (20) is provided with a second positioning fitting member (24). Along the movement direction of the trigger member (11), the second positioning member (32) and the second positioning fitting member (24) are slidably engaged.

6. The applicator according to claim 1, characterized in that, The applicator (100) also includes a retraction block (60), which is movably mounted on the push block (30); The analyte sensor (50) has a probe (51), and the retraction block (60) is provided with an auxiliary needle (61). The auxiliary needle (61) forms an inwardly accommodating cavity (611), and the probe (51) is housed in the accommodating cavity (611).

7. The applicator according to claim 6, characterized in that, The applicator (100) further includes a second elastic element (70), which is pre-compressed and installed between the retraction block (60) and the push block (30); The push block (30) is also provided with an elastic claw (34), which can abut against the inner peripheral wall (201) of the second housing (20); wherein, there is positional interference between the elastic claw (34) and the retraction block (60), and the elastic claw (34) is configured to elastically deform in a direction away from the retraction block (60) in response to the push of the retraction block (60).

8. The applicator according to claim 7, characterized in that, The elastic claw (34) has a pushing slope (341) that abuts against the retracting block (60) along the direction of movement of the retracting block (60) relative to the pushing block (30).

9. The applicator according to claim 8, characterized in that, A groove (621) is provided on the outer peripheral wall (62) of the retraction block (60). The elastic claw (34) slides in cooperation with the groove (621) along the direction of movement of the retraction block (60) relative to the push block (30).

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