Applicator for analyte sensorThe present application is a divisional application filed under the name of "applicator for analyte sensor" with application number 202211557844.7 on the day 2022, 12/06.
Technical Field
The invention belongs to the technical field related to medical instruments, and particularly relates to an applicator of an analyte sensor.
Background
The analyte sensor is a device that combines biological components with a physicochemical monitor for detection and analysis, preferably a continuous glucose monitor, wherein the continuous glucose monitor is a small-volume minimally invasive wearable device, also known as a continuous blood glucose monitoring system (Continuous Glucose Monitoring System, CGMS). The CGM dynamic blood sugar monitoring refers to a technology for monitoring the change of the glucose concentration of subcutaneous tissue fluid through a glucose sensor, and can provide continuous, comprehensive and reliable all-day blood sugar information to know the condition of blood sugar fluctuation. During monitoring, the probe with the glucose sensor needs to be ejected out by an applicator in the continuous glucose monitor and attached to the skin so as to complete the implantation process of the probe (abbreviated as a needle assisting process), and further the glucose sensor is assisted to monitor the blood glucose value in subcutaneous tissue. The ejection switch of the applicator for continuous blood sugar monitoring is a key for triggering the whole ejection-needle assisting process, and the ejection switch is required to be capable of effectively completing locking and releasing actions on ejection structural members, and meanwhile, the operation of a user with one hand is facilitated.
At present, a SNAP-in type structure is generally adopted in an ejection switch of a CGM (common general purpose) applicator in the existing market, and the SNAP-in type ejection switch comprises a sliding SNAP-in type and a SNAP-in type, wherein when the sliding SNAP-in type ejection switch is specifically operated, a user is required to press a shell forcefully, so that a cantilever SNAP-in structure connected to the shell is deformed to be separated from a sliding rail to limit and slide relative to other structural parts, an ejection-needle assisting process is completed, the SNAP-in type ejection switch adopts a plastic male and female SNAP-in type, a male buckle is required to be clamped into a female buckle in an interference mode in a locking process, and a button is required to be pressed in a releasing process to enable the male buckle to be deformed again to be separated from the female buckle, so that the release process is completed. However, in the ejection switch with the two buckle structures, the locking and releasing processes of the buckle are dependent on the elastic deformation of the structural member, so that the risks of fatigue damage and unhooking failure exist, and the reliability and experience are affected.
Disclosure of Invention
In view of the foregoing, there is a need for an applicator for an analyte sensor that solves the above-described problems.
An applicator for an analyte sensor includes a housing, an ejection extension member slidably mounted within the housing, a first spring disposed in a path of movement of the ejection extension member and abutting the housing and the ejection extension member, respectively, and a locking member rotatably mounted within the housing;
Wherein a position interference portion is formed between the lock member and the ejection expanding member, and the lock member is configured to rotate relative to the housing in response to pushing of the position interference portion to control locking between the ejection expanding member and the lock member.
In the application, the position interference part between the ejection expanding member and the locking member is utilized to drive the rotation of the locking member in the process of sliding the ejection expanding member in the shell, and the locking between the ejection expanding member and the locking member is realized, so that the ejection expanding member and the locking member are in rigid contact in the locking process when the applicator is operated, the elastic deformation of parts is avoided, the failure risk caused by the elastic deformation of the parts can be effectively reduced, the reliability and the experience sense of the applicator are improved, and meanwhile, the locking between the locking member and the ejection expanding member is realized by the sliding of the ejection expanding member, so that the applicator has the self-adaptive assembly locking function, and the convenience of the assembly of the applicator can be improved.
In one embodiment, the position interference part comprises a lock pin and an inclined tooth, and the inclined tooth is provided with a first guide inclined plane on the movement path of the ejection expanding member, and the locking member is driven to rotate relative to the shell under the pushing of the ejection expanding member through the abutting fit between the first guide inclined plane and the lock pin.
It can be understood that through the structural arrangement of the lock pin and the inclined teeth, the lock pin is in abutting fit with the first guide inclined surface on the inclined teeth, so that the rotation driving of the locking member is realized in the sliding process of the ejection expanding member in the shell, the structural arrangement of the position interference part between the ejection expanding member and the locking member is realized, the structure is simplified, and the rotation driving of the locking member in the sliding process of the ejection expanding member is facilitated.
In one embodiment, the ejection expanding member is partially sleeved to the locking member, wherein the locking pin is provided on the ejection expanding member, and the inclined teeth are provided on the locking member;
or the locking member is partially sleeved to the ejection expanding member, wherein the inclined teeth are arranged on the ejection expanding member, and the lock pin is arranged on the locking member.
It will be appreciated that by the above-described structural arrangement, different embodiments of the ejection expanding member and the locking member in the applicator are thereby embodied.
In one embodiment, a plurality of locking pieces and limiting protruding blocks are further formed between the ejection expanding member and the locking member, the limiting protruding blocks are sequentially arranged at intervals along the circumferential direction of the shell, and a channel is formed between two adjacent limiting protruding blocks;
the lock is capable of passing through the channel and abutting one of the limit tabs to lock the ejector extension member to the locking member.
It can be understood that through the structural arrangement of the limit projection and the locking piece, the locking or unlocking of the ejection expanding member on the locking member is realized by utilizing the fact that whether the locking piece is matched with the limit projection or not, and the plurality of limit projections are sequentially arranged at intervals along the circumferential direction of the shell, so that a circumferential repeating unit is arranged between the ejection expanding member and the locking member, the aim of repeatedly using the applicator can be achieved through the continuous rotary motion of the locking member, and the reusability of the applicator can be improved.
In one embodiment, a sliding portion is provided on an outer periphery of the ejection expanding member, a sliding engagement portion is provided on an inner peripheral wall of the housing, and the ejection expanding member is slidably mounted into the housing by engagement between the sliding portion and the sliding engagement portion.
It can be appreciated that by the structural arrangement between the sliding portion and the sliding engagement portion, the sliding installation of the ejection expanding member in the housing is specifically realized by the engagement between the sliding portion and the sliding engagement portion.
In one embodiment, the housing is provided with a positioning shaft, the locking member is provided with a through hole for matching with the positioning shaft, and the positioning shaft penetrates through the through hole so that the locking member is rotatably mounted on the positioning shaft;
the locating shaft is provided with a limiting buckle on the part extending out of the through hole, and the limiting buckle is attached to the locking member so as to axially limit the locking member to the locating shaft.
It can be understood that the locking member is limited by the limiting buckle through the matching between the positioning shaft and the through hole, so that the rotation assembly of the locking member in the shell is specifically realized.
In one embodiment, the applicator further comprises a button slidably mounted on the housing and cooperating with the locking member, the button being capable of pushing the locking member into rotation relative to the housing to unlock the locking member from the ejection expansion member.
It can be understood that through the structural arrangement of the button, and by utilizing the rotation driving of the button to the locking member, the purpose of unlocking the locking member and the ejection expanding member is achieved, so that the ejection expanding member slides relative to the shell under the action of the elastic potential energy of the first elastic piece, namely, the release of the ejection expanding member during the operation of the applicator is realized.
In one embodiment, the push button is provided with a thimble, the locking member is provided with a second guiding inclined plane, and the push button can drive the locking member to rotate relative to the housing through abutting fit between the thimble and the second guiding inclined plane.
It can be understood that through the structural arrangement of the ejector pin and the second guide inclined plane, the ejector pin is utilized to be in butt fit with the second guide inclined plane, so that the push button can drive the locking member to rotate in the shell, the structure is simplified, and the push button can conveniently drive the locking member in a rotating manner in the moving process.
In one embodiment, the applicator further comprises a second elastic member disposed on a movement path of the button and abutting against the housing and the button, respectively, for driving the button to elastically reset.
It can be appreciated that through the structural arrangement of the second elastic member, the structural characteristics of the second elastic member are utilized, so that the button can be reset under the action of the elastic potential energy of the second elastic member when the external force is relieved, and the use requirement of the applicator for repeated use is met.
In one embodiment, the applicator further comprises a sensor disposed inside the housing;
the sensor is abutted against the ejection expansion member, and the probe part on the sensor can extend out of the shell under the drive of the ejection expansion member.
It will be appreciated that the use requirements of the applicator for an analyte sensor are met by the construction of the sensor described above.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
The applicator of the analyte sensor can realize the driving of the rotation of the locking member in the process of sliding the ejection expanding member in the shell by utilizing the position interference part between the ejection expanding member and the locking member, and further realize the locking of the ejection expanding member and the locking member, so that the ejection expanding member and the locking member are in rigid contact in the locking process when the applicator is operated, the elastic deformation of parts is avoided, the failure risk caused by the elastic deformation of the parts can be effectively reduced, the reliability and the experience sense of the applicator are improved, and meanwhile, the locking between the locking member and the ejection expanding member is realized by the sliding of the ejection expanding member, so that the applicator has the self-adaptive assembly locking function, and the convenience of the assembly of the applicator can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is an exploded view of an applicator for an analyte sensor provided in a first embodiment of the present application;
FIG. 2 is a cross-sectional view of an applicator for an analyte sensor provided in a first embodiment of the present application;
FIG. 3 is a schematic view of the structure of the housing of the present application;
FIG. 4 is a schematic view of the first embodiment of the present application from another view of the housing;
FIG. 5 is a schematic view of the structure of the ejection expanding member according to the first embodiment of the present application;
FIG. 6 is a schematic view of the structure of the locking member according to the first embodiment of the present application;
FIG. 7 is a schematic view showing the structure of a button according to the first embodiment of the present application;
FIGS. 8, 9, 10 and 11 are schematic views illustrating the movement trace of the lock pin in the locking member according to the first embodiment of the present application;
FIG. 12 is a cross-sectional view of an applicator for an analyte sensor provided in a second embodiment of the present application.
Reference numerals 100, applicator, 10, housing, 11, inner peripheral wall, 111, sliding fit portion, 1111, rib, 12, positioning shaft, 121, retainer button, 13, buckle slot, 20, ejector extension member, 21, lock pin, 22, outer peripheral edge, 221, sliding portion, 2211, groove, 30, first elastic piece, 40, locking member, 41, inclined tooth, 411, first guide slope, 412, second guide slope, 42, retainer projection, 421, channel, 422, retainer groove, 43, through hole, 50, button, 51, ejector pin, 52, buckle, 53, retainer projection, 60, second elastic piece, 70, sensor, 71, probe, 80, sealing cover.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
It will be understood that when an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, 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 belongs. The terminology used in the description of the invention herein 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.
The applicator 100 of the analyte sensor claimed in the present application is used in blood glucose monitors, and in particular, to implant the probe 71 of the sensor 70 for detecting blood glucose into the skin of a user. Of course, it will be apparent to those skilled in the art that the sensor 70 of the applicator 100 is not limited to use in detecting blood glucose of a user, but may be used to detect ketones, lactate, oxygen, hemoglobin A1C, etc. of a user, and may be implemented by replacing the sensor 70, and will not be described herein.
As shown in fig. 1 and 2, the first embodiment of the present application provides an applicator 100, which includes a housing 10, an ejection expanding member 20, a first elastic element 30 and a locking member 40, wherein the ejection expanding member 20 is slidably mounted in the housing 10, the first elastic element 30 is disposed on a movement path of the ejection expanding member 20 and abuts against the housing 10 and the ejection expanding member 20, respectively, and the locking member 40 is rotatably mounted in the housing 10, wherein a position interference part is formed between the locking member 40 and the ejection expanding member 20, and the locking member 40 is configured to rotate relative to the housing 10 in response to pushing of the position interference part so as to control locking between the ejection expanding member 20 and the locking member 40. That is, in the process of sliding the ejection expanding member 20 in the housing 10 and compressing the first elastic piece 30, the ejection expanding member 20 can realize the driving of the rotation of the locking member 40 in the housing 10 by using the position interference portion between the ejection expanding member and the locking member 40, and the locking of the ejection expanding member 20 can be realized by the rotated locking member 40. The first elastic member 30 is provided as a spring, an elastic rubber sleeve, or the like.
It will be appreciated that the locking process of the present embodiment of the applicator 100 during operation of the present invention provides a rigid contact between the catapulting and expanding member 20 and the locking member 40, avoiding elastic deformation of the components, thus effectively reducing the risk of failure due to elastic deformation of the components, improving the reliability and experience of the applicator 100, and simultaneously, the locking between the locking member 40 and the catapulting and expanding member 20 is achieved by sliding of the catapulting and expanding member 20, so that the applicator 100 has an adaptive assembly locking function, thus improving the convenience of assembly of the applicator 100.
As shown in fig. 3 and 5, the outer periphery 22 of the ejection expanding member 20 is provided with a sliding portion 221, the inner peripheral wall 11 of the housing 10 is provided with a sliding engagement portion 111, and the ejection expanding member 20 is slidably mounted in the housing 10 through the engagement between the sliding portion 221 and the sliding engagement portion 111, so that the sliding connection of the ejection expanding member 20 on the housing 10 is specifically realized, and the ejection expanding member 20 can only axially slide in the housing 10 under the driving of an external force to compress the first elastic piece 30.
Specifically, the sliding portion 221 is configured as a groove 2211 formed on the outer periphery 22 of the ejection expanding member 20, the sliding fitting portion 111 is configured as ribs 1111 formed on the inner peripheral wall 11 of the housing 10, and the number of the grooves 2211 and the ribs 1111 is three. Of course, the number of the grooves 2211 and the ribs 1111 is not limited to three, and may be two, four or even more, and the sliding portion 221 may be ribs, and the sliding portion 111 may be grooves, which will not be described herein.
As shown in fig. 4 and 6, the housing 10 is further provided with a positioning shaft 12, the locking member 40 is provided with a through hole 43 for matching with the positioning shaft 12, the positioning shaft 12 penetrates through the through hole 43 to rotatably mount the locking member 40 on the positioning shaft 12, wherein the positioning shaft 12 is provided with a limit button 121 on a portion extending out of the through hole 43, and the limit button 121 is abutted against the locking member 40 to axially limit the locking member 40 to the positioning shaft 12, so that the rotational connection of the locking member 40 in the housing 10 is specifically realized. It should be noted that, the above-mentioned limit buckles 121 may be specifically provided with protruding buckles having a certain elasticity to meet the use requirement of the locking member 40 for assembling on the positioning shaft 12 of the housing 10, and of course, the number of limit buckles 121 may be two, three or even more according to the use requirement, which will not be described herein.
As shown in fig. 5 and 6, the position interference part formed between the ejection expanding member 20 and the locking member 40 of the applicator 100 includes a lock pin 21 and an inclined tooth 41, and on the moving path of the ejection expanding member 20, the inclined tooth 41 has a first guiding inclined plane 411, by means of abutting engagement between the first guiding inclined plane 411 and the lock pin 21, the locking pin 21 breaks down the pushing force of the first guiding inclined plane 411 on the inclined tooth 41 by using the structural characteristic of the first guiding inclined plane 411, and then combines with the locking member 40 to limit axially into the housing 10, so that the locking member 40 can be driven to rotate relative to the housing 10 under the pushing of the ejection expanding member 20, thereby realizing the structural arrangement of the position interference part between the ejection expanding member 20 and the locking member 40.
Specifically, the ejector extension member 20 in the applicator 100 of the present embodiment is partially sleeved with the lock member 40, wherein the lock pin 21 is provided on the ejector extension member 20, and the inclined teeth 41 are provided on the lock member 40. The lock pin 21 on the ejection expanding member 20 of the applicator 100 may be attached to the outer peripheral wall of the locking member 40, and the inclined teeth 41 on the locking member 40 are specifically configured in a ring structure, so as to fulfill the purpose of unlocking the ejection expanding member 20 by the locking member 40.
A plurality of limiting protrusions 42 and locking pieces are further formed between the ejection expanding member 20 and the locking member 40 in the applicator 100, the plurality of limiting protrusions 42 are sequentially spaced apart along the circumferential direction of the housing 10, wherein a channel 421 is formed between two adjacent limiting protrusions 42, and the locking pieces can pass through the channel 421 and abut one of the limiting protrusions 42 to lock the ejection expanding member 20 to the locking member 40. That is, the ejection expanding member 20 can drive the locking piece to pass through the channel 421 and pass through the limiting bump 42, and then the positions of the locking piece and the limiting bump 42 in the circumferential direction are changed under the driving of the rotation of the locking member 40, so that when the ejection expanding member 20 is reset under the elastic pushing of the first elastic piece 30, the locking piece can be abutted with one of the limiting bumps 42, that is, the locking of the ejection expanding member 20 on the locking member 40 is realized. It should be noted that, a limiting groove 422 is formed on an end surface of the limiting projection 42 facing the direction of the inclined tooth 41, so that the limiting projection 42 can be abutted with the locking piece by the limiting groove 422 to realize the locking between the ejection expanding member 20 and the locking member 40.
Specifically, the lock of the present embodiment is provided on the ejector expanding member 20, specifically the lock is provided as the lock pin 21 described above, and the plurality of stopper projections 42 are provided on the lock member 40, specifically on the outer peripheral wall of the lock member 40. It is of course possible for a person skilled in the art to provide the locking element and the locking pin 21 as two separate parts, which are not described here.
It will be appreciated that the plurality of spacing projections 42 are sequentially spaced apart along the circumference of the housing 10 such that there is a circumferential repeating unit between the catapulting spreading member 20 and the locking member 40, and the repeated use of the applicator 100 can be achieved by the continuous rotational movement of the locking member 40 itself, which can enhance the recyclability of the applicator 100.
In the applicator 100, the number of the locking pins 21 on the ejection expanding member 20 is three, the number of the inclined teeth 41 on the locking member 40 is six, the number of the limit projections 42 is six, and the six limit projections 42 are spaced apart from each other and formed with six channels 421. The three lock pins 21 can simultaneously be in abutting engagement with the corresponding three limit projections 42, so that the stability of the ejection expanding member 20 when in locking engagement with the locking member 40 can be improved. Of course, the numbers of the lock pins 21 on the ejection expansion member 20, the inclined teeth 41 and the limit lugs 42 on the locking member 40 are not limited to the illustrative numbers, and for those skilled in the art, the number of the lock pins 21 may be two, the number of the inclined teeth 41 and the limit lugs 42 may be four, or the number of the lock pins 21 may be four, and the number of the inclined teeth 41 and the limit lugs 42 may be eight, which will not be described herein.
As shown in fig. 1 and 2, the applicator 100 further includes a button 50, the button 50 being slidably mounted on the housing 10 and cooperating with the locking member 40, the button 50 being capable of pushing the locking member 40 into rotation relative to the housing 10 to unlock the locking member 40 from the ejector extension member 20. That is, the applicator 100 can use the button 50 to realize the driving of the rotation of the locking member 40 and achieve the purpose of releasing the locking between the locking member 40 and the catapulting expansion member 20, so that the catapulting expansion member 20 slides relative to the housing 10 under the action of the elastic potential energy of the first elastic element 30, that is, the release of the catapulting expansion member 20 when the applicator 100 is operated.
As shown in fig. 6 and 7, the push button 50 is provided with a thimble 51, the locking member 40 is provided with a second guiding inclined plane 412, and the push button 50 can drive the locking member 40 to rotate relative to the housing 10 by utilizing the structural characteristics of the second guiding inclined plane 412 through the abutting fit between the thimble 51 and the second guiding inclined plane 412, so that the push button 50 has a simplified structure and is convenient for driving the locking member 40 to rotate in the moving process. It should be noted that, the number of the ejector pins 51 and the second guiding inclined planes 412 is plural, and the ejector pins 51 and the second guiding inclined planes 412 are in one-to-one correspondence, so that the push button 50 can realize the driving of the rotation of the locking member 40 through the abutting and matching between the ejector pins 51 and the second guiding inclined planes 412.
Preferably, the second guide inclined surface 412 is provided on the inclined teeth 41, which has the effect of simplifying the structure of the locking member 40. Of course, in order to realize the arrangement of the second guide inclined surface 412 on the locking member 40, a component independent of the inclined teeth 41 may be provided separately on the locking member 40, which is not described here.
Wherein, the button 50 is provided with a buckle 52, the shell 10 is provided with a buckle groove 13 matched with the buckle 52, and the button 50 is limited to the shell 10 through the cooperation between the buckle 52 and the buckle groove 13, so that the button 50 can be prevented from being separated from the shell 10. It should be noted that the length of the slot 13 is greater than the length of the buckle 52, so that the button 50 can slide axially on the housing 10.
As shown in fig. 1 and 2, the applicator 100 further includes a second elastic member 60, where the second elastic member 60 is disposed on a movement path of the button 50 and abuts against the housing 10 and the button 50 respectively to drive the button 50 to elastically reset, so that the button 50 can be reset under the action of elastic potential energy of the second elastic member 60 when the external force is released by using the structural characteristics of the second elastic member 60, so as to meet the requirement of repeated use of the applicator 100. The second elastic member 60 is specifically configured as a spring, an elastic rubber sleeve, or the like.
As shown in fig. 7, the button 50 is provided with a limiting boss 53, the second elastic member 60 is sleeved on the limiting boss 53, and by using the cooperation between the limiting boss 53 and the second elastic member 60, the second elastic member 60 can be prevented from moving left and right in the process of being compressed by the button 50, so as to ensure that the second elastic member 60 rebounds effectively.
As shown in fig. 1 and 2, the applicator 100 further includes a sensor 70, the sensor 70 being disposed inside the housing 10, wherein the sensor 70 is abutted against the ejection expansion member 20, and a portion of the probe 71 on the sensor 70 can extend out of the housing 10 under the force of the ejection expansion member 20 to meet the use requirements of the applicator 100 for analyte sensors.
In addition, the applicator 100 further includes a flap 80, the flap 80 being mounted to the housing 10 to enclose the sensor 70 within the housing 10. The sealing cover 80 is connected to a medical adhesive tape (not shown) or a medical non-woven fabric (not shown), so that the probe 71 of the sensor 70 can be inserted into the skin surface of the user through the corresponding medical adhesive tape (not shown) or medical non-woven fabric (not shown) and firmly.
As shown in fig. 8 to 11, when the applicator 100 is used, a user drives the ejection expanding member 20 to compress the first elastic piece 30 and move towards the locking member 40, in the process, the lock pin 21 on the ejection expanding member 20 can pass through the channel 421 between two adjacent limit lugs 42 and is in abutting fit with the first guide inclined plane 411 of the inclined tooth 41 on the locking member 40, the lock pin 21 is driven by the ejection expanding member 20 to move continuously by the inclined plane characteristic of the first guide inclined plane 411, and meanwhile, the locking member 40 can be driven to rotate in the shell 10, so that when the ejection expanding member 20 loses external force and is driven by the compressed first elastic piece 30 to move reversely, the lock pin 21 on the ejection expanding member 20 can be abutted with the corresponding limit lug 42 and achieves the purpose of locking the ejection expanding member 20 on the locking member 40, and then the button 50 is pressed, under the abutting fit between the ejector pin 51 on the button 50 and the second guide inclined plane 412 on the inclined tooth 41, the rotation driving lug of the locking member 40 is realized again, the lock pin 21 can be driven by the ejector pin 21 to move continuously, and simultaneously, the lock pin 21 can be driven by the elastic piece 70 is driven by the elastic piece 70 to move reversely, namely, the lock pin 21 can be driven by the elastic piece 70 is released from the position of the corresponding limit lug 42 under the expansion member 30, and the position of the lock pin is driven by the elastic piece 70, and the elastic piece 70 can be driven by the elastic piece 70 to move reversely under the drive the expansion piece, and the position of the lock pin is driven by the limit lug 70.
As shown in fig. 12, the second embodiment of the present application provides an applicator 100 having a construction and an operation principle substantially the same as that of the applicator 100 of the first embodiment of the present application, the difference being that the locking member 40 is partially sleeved to the ejector expanding member 20 in this embodiment, and the lock pin 21 in which a position interference portion is formed between the locking member 40 and the ejector expanding member 20 is provided on the locking member 40, and the inclined teeth 41 are provided on the ejector expanding member 20.
In addition, the blood glucose monitor according to an embodiment of the present application includes a monitor main body (not shown), and the above-described applicator 100, and the applicator 100 is mounted on the monitor main body.
In summary, the catapulting expansion member 20 and the locking member 40 are in rigid contact during the locking process of the applicator 100 in the operation, and the elastic deformation of parts is avoided, so that the failure risk caused by the elastic deformation of the parts can be effectively reduced, the reliability and the experience of the applicator 100 are improved, meanwhile, the applicator 100 has the self-adaptive assembly locking function, the convenience of the assembly of the applicator 100 can be improved, the loading-locking-releasing process of the catapulting expansion member 20 is repeatedly realized by utilizing the continuous rotary motion of the locking member 40, and the recycling property of the applicator 100 is further improved.
The technical features of the above embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
It will be appreciated by persons skilled in the art that the above embodiments have been provided for the purpose of illustrating the invention and are not to be construed as limiting the invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.