Anti-misoperation mechanism and applicator

Abstract

The present disclosure provides an anti-misoperation mechanism and an applicator. The anti-misoperation mechanism comprises: an actuating assembly comprising an actuating member; a locking assembly comprising a push top portion abutting against the actuating member in a first direction; and an anti-misoperation assembly comprising a stop portion. In addition, the anti-misoperation assembly can be externally abutted in the first direction so as to switch from a locked state to an unlocked state. In the locked state, the stop portion can abut against the push top portion or the actuating member in a radial direction perpendicular to the first direction, so as to prevent the push top portion from being separated from the actuating member in the radial direction; and in the unlocked state, when the push top portion of the locking assembly is driven to move in the first direction, the push top portion can move in the first direction relative to the anti-misoperation assembly, so that the push top portion or the actuating member and the anti-misoperation assembly are allowed to clear each other in the radial direction, and the push top portion and the actuating member can be separated in the radial direction. Accordingly, the medical device can be prevented from being released due to the misoperation of the applicator.

Description

Anti-mis-touch mechanism and applicator TECHNICAL FIELD

[0001] The present disclosure relates generally to the technical field of medical devices. More particularly, the present disclosure relates to an anti-mis-touch mechanism and applicator. BACKGROUND

[0002] As a kind of medical appliance, applicator is generally used to assist user to more accurately transport medical device for attaching to human body to target site. In use, user abuts applicator to target human body position and presses handle of applicator to release medical device needed to be installed. However, due to its structure being easily triggered, sometimes user mis-touch occurs, resulting in applicator not being aligned with target application position, while medical device is still ejected. This not only causes equipment waste, but also has certain security risks in some cases where medical device includes sharp parts such as needle.

[0003] Therefore, it is urgent to provide an anti-mis-touch mechanism and applicator to meet the anti-mis-touch requirement of applicator. SUMMARY

[0004] In order to at least solve the technical problems as mentioned above, the present disclosure proposes an anti-mis-touch mechanism and applicator in multiple aspects.

[0005] In a first aspect, the present disclosure provides an anti-mis-touch mechanism, comprising: an execution assembly comprising a first execution member; a locking assembly comprising a push-up portion abutting against the first execution member in a first direction; a first anti-mis-touch assembly comprising a stop portion; and the first anti-mis-touch assembly being capable of being externally abutted in the first direction to switch from a locked state to an unlocked state, in the locked state, the stop portion is capable of abutting against the push-up portion or the first execution member in a radial direction perpendicular to the first direction to block the push-up portion and the first execution member from being separated in the radial direction; in the unlocked state, the push-up portion of the locking assembly is capable of moving in the first direction relative to the first anti-mis-touch assembly when being driven to move in the first direction, thereby making the push-up portion or the first execution member and the first anti-mis-touch assembly let each other in the radial direction, so that the push-up portion and the first execution member are capable of being separated in the radial direction.

[0006] In some embodiments, the locking assembly comprises a locking piece and a first housing capable of moving relative to the locking piece in a first direction, the locking piece comprises a pushing portion, the first housing has a first locking receiving slot, the stop portion is capable of abutting against the pushing portion in a radial direction when the first housing and the first anti-misoperation assembly are moved together relative to the locking piece until the first locking receiving slot is aligned with the pushing portion in the radial direction, the pushing portion is capable of being elastically deformed in the radial direction and moving at least partially into the first locking receiving slot to release the first actuating piece when the first housing is driven relative to the first anti-misoperation assembly so that the locking positioning portion is disconnected from the limiting portion and the first housing is moved relative to the locking piece until the first locking receiving slot is aligned with the pushing portion in the radial direction.

[0007] In some embodiments, the locking piece comprises a first elastic arm, a U-shaped opening is provided on the sidewall of the locking piece, the first elastic arm is formed by the central material of the U-shaped opening of the sidewall of the locking piece, a distal end of the first elastic arm is provided with a pushing portion, the pushing portion comprises a first lateral protrusion, a second lateral protrusion and a radial protrusion, the first lateral protrusion and the second lateral protrusion are symmetrically arranged at the distal end of the first elastic arm relative to the radial protrusion, and the radial protrusion extends and protrudes outward in the radial direction.

[0008] In some embodiments, the first anti-misoperation assembly comprises two stop portions, the pushing portion further comprises two lateral protrusions, and the two stop portions are capable of abutting against the two lateral protrusions in the radial direction when the first anti-misoperation assembly is not abutted by an external force and the first locking receiving slot is aligned with the pushing portion.

[0009] In some embodiments, the pushing portion further comprises a radial protrusion extending outward in the radial direction, the radial protrusion is used for abutting against an inner wall of the first housing when the pushing portion is not aligned with the first locking receiving slot, and the two lateral protrusions are symmetrically arranged relative to the radial protrusion.

[0010] In some embodiments, the locking piece is further used for abutting against human skin, a distance between a bottom of the stop portion and a bottom end of the first anti-misoperation assembly in the first direction is greater than a distance between an upper surface of the lateral protrusion and a bottom end of the locking piece.

[0011] In some embodiments, the first housing comprises a locking positioning portion, the limiting portion is releasably connected to the locking positioning portion in the first direction, the first anti-misoperation assembly further comprises a first elastic piece capable of being elastically deformed, the limiting portion is arranged at a distal end of the first elastic piece, and the first elastic piece is elastically deformed laterally to disconnect the locking positioning portion from the limiting portion when the first anti-misoperation assembly is abutted in the first direction and the first housing is driven relative to the first anti-misoperation assembly.

[0012] In some embodiments, the locking positioning portion comprises a housing locking block protruding radially inward from the inner wall of the first housing, the housing locking block comprising a first locking portion, the limiting portion comprising a second locking portion elastically releasably engaged with the first locking portion, at least one of the first locking portion and the second locking portion being formed as a bevel at the abutting position thereof for guiding the second locking portion to slide laterally along the bevel and disengage from the first locking portion when the two are moved away from each other in the first direction.

[0013] In some embodiments, the abutting position of the first locking portion and / or the second locking portion is formed as a locking bevel for guiding the second locking portion to slide laterally and disengage from the first locking portion when the locking positioning portion and the limiting portion are moved relative to each other in the first direction.

[0014] In some embodiments, the limiting portion further comprises a backstop surface arranged towards the bottom end of the first anti-misoperation assembly, the backstop surface being used to abut against the upper surface of the housing locking block when the first housing is pressed and then reversely moved after the second locking portion disengages from the first locking portion.

[0015] In some embodiments, the pushing portion comprises a pushing bevel for converting the pushing force of the execution assembly in the first direction into a radial pushing force, so that the pushing portion abuts against the locking assembly or the anti-misoperation assembly in the radial direction.

[0016] In some embodiments, the limiting portion further comprises a backstop surface arranged towards the bottom end of the first anti-misoperation assembly, the backstop surface being used to abut against the upper surface of the housing locking block when the first housing is pressed and then reversely moved after the second locking portion disengages from the first locking portion.

[0017] In some embodiments, the limiting portion further comprises a backstop surface arranged towards the bottom end of the anti-misoperation assembly, the backstop surface being used to abut against the upper surface of the housing locking block when the first housing is pressed and then reversely moved after the second locking portion disengages from the first locking portion.

[0018] In some embodiments, the locking assembly comprises a second housing, the anti-misoperation mechanism comprises a second anti-misoperation assembly, the second anti-misoperation assembly has a second locking accommodating groove, the execution assembly comprises a second execution member, the second execution member comprises an execution locking portion capable of being elastically deformed in the radial direction, the second execution member comprises an inner side wall close to the inner side of the second housing in the radial direction, and the inner side wall is provided with a pushing portion; when the second anti-misoperation assembly is not abutted by an external force, the stop portion abuts against the second execution member in the radial direction to block the second execution member from being elastically deformed in the radial direction and moving into the second locking accommodating groove, thereby preventing the second execution member from being released; when the second anti-misoperation assembly is abutted by an external force and the second housing and the second execution member move relative to the second anti-misoperation assembly until the second locking accommodating groove is aligned with the second execution member in the radial direction, the second execution member can be deformed in the radial direction and move into the second locking accommodating groove to be separated from the pushing portion.

[0019] In some embodiments, the second housing comprises a locking opening, the push top is disposed at the bottom of the locking opening, and the second actuating member at least partially extends into the locking opening, and at least one of the push top and the second actuating member is formed as a slope at the abutting position therebetween, so as to convert the pushing force of the driving mechanism in the first direction into a radial pushing force.

[0020] In some embodiments, the second actuating member comprises a second elastic arm extending in the radial direction, and the execution locking portion is disposed at the end of the second elastic arm, and the second elastic arm is capable of being elastically deformed in the radial direction to drive the execution locking portion to move into or out of the second locking accommodation slot of the second anti-misoperation assembly.

[0021] In some embodiments, the second housing further comprises a support inner wall extending in the first direction and a trigger, the locking opening is disposed on the trigger, and the stop portion is disposed in the radial direction between the second actuating member and the support inner wall, so that the stop portion is clamped in the radial direction by the second actuating member and the support inner wall.

[0022] In some embodiments, the lower side edge of the locking opening forms a release slope configured to cooperate with a locking slope on the second actuating member; wherein the release slope is configured to be in contact with the locking slope on the lower side of the execution locking portion of the second actuating member when the applicator is in the initial state, so that the second elastic arm of the second actuating member is subjected to an inward radial pushing force by the elastic force of the axial spring of the second actuating member; the cooperation between the release slope and the locking slope is configured to allow the second elastic arm to be elastically deformed in the radial direction inwardly after the second anti-misoperation assembly is driven to move relative to the second housing, so that the execution locking portion avoids the release slope in the first direction, thereby releasing the locking between the second actuating member and the trigger and between the second actuating member and the second housing.

[0023] In a second aspect, the present disclosure provides an applicator comprising an anti-misoperation mechanism as above.

[0024] By the above description of the solutions of the present disclosure, those skilled in the art can understand that the present disclosure provides a mistaken touch prevention mechanism, which comprises an execution assembly including a first execution member and a second execution member; a locking assembly including a pushing portion abutting against the first execution member or the second execution member in a first direction; a first mistaken touch prevention assembly and a second mistaken touch prevention assembly including a stop portion capable of abutting against the pushing portion or the first execution member or the second execution member in a radial direction perpendicular to the first direction to block the pushing portion and the first execution member or the second execution member from being separated in the radial direction; and the first mistaken touch prevention assembly and the second mistaken touch prevention assembly capable of being externally abutted in the first direction to enable the first mistaken touch prevention assembly and the second mistaken touch prevention assembly to move in the first direction relative to the pushing portion of the locking assembly, thereby enabling the first mistaken touch prevention assembly and the second mistaken touch prevention assembly to avoid the pushing portion or the first execution member or the second execution member in the radial direction and enabling the pushing portion and the first execution member or the second execution member to be separated in the radial direction. By the mistaken touch prevention mechanism, the medical device can be prevented from being released when the applicator is mistakenly touched, thereby avoiding problems such as waste of equipment. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0026] FIG. 1 illustrates an exemplary perspective view of an applicator according to some embodiments of the present disclosure;

[0027] FIG. 2 illustrates an exemplary exploded view of an applicator according to some embodiments of the present disclosure;

[0028] FIG. 3 illustrates an exemplary sectional view of a partial assembly of an applicator according to some embodiments of the present disclosure;

[0029] FIG. 4a illustrates an exemplary sectional view of an applicator according to some embodiments of the present disclosure;

[0030] FIG. 4b illustrates an enlarged view of portion A in FIG. 4a;

[0031] FIG. 5 illustrates an exemplary sectional view of an applicator according to some embodiments of the present disclosure;

[0032] FIG. 6 illustrates an exemplary sectional view of an applicator according to some embodiments of the present disclosure;

[0033] FIG. 7 illustrates an exemplary sectional view of an applicator according to some embodiments of the present disclosure;

[0034] FIG. 8 illustrates an exemplary sectional view of an applicator according to some embodiments of the present disclosure;

[0035] FIG. 9 illustrates an enlarged view of portion B in FIG. 8;

[0036] Fig. 10 shows a schematic view of the part in Fig. 9 in some variation states.

[0037] Reference signs: 100, applicator; 10, first housing; 11, housing locking block; 111, first housing locking block; 111a, first locking part; 112, second housing locking block; 20, locking piece; 201, push top inclined surface; 21, push top; 211, first lateral protrusion; 212, second lateral protrusion; 213, radial protrusion; 210, second housing; 214, support inner wall; 215, trigger piece; 215a, locking opening; 215b, release inclined surface; 30, first anti-misoperation assembly; 301, first anti-misoperation piece; 302, second anti-misoperation piece; 31, limiting part; 311, first positioning part; 311a, second locking part; 312, second positioning part; 313, first clamping groove; 314, second clamping groove; 32, stop part; 321, first stop part; 322, second stop part; 34, contact surface; 35, non-return surface; 40, first locking receiving groove; 90, execution assembly; 91, first execution piece; 92, spring; 220, second execution piece; 225, second elastic arm; 225a, execution locking part; 225b, locking inclined surface; 230, second anti-misoperation assembly; 232, third stop part; 240, abutting piece; 250, second locking receiving groove; 260, axial spring; 300, human body. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present disclosure.

[0039] It should be understood that the terms “include” and “contain” used in the specification and claims of the present disclosure indicate the existence of the described features, whole, steps, operations, elements and / or components, but do not exclude the existence or addition of one or more other features, whole, steps, operations, elements, components and / or sets thereof.

[0040] It should also be understood that the terms used herein are for the purpose of describing particular embodiments and are not intended to limit the present disclosure. As used in this specification and claims, the singular forms“a,”“an” and“the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms“and / or,” as used herein, refers to and encompasses any and all possible combinations of one or more of the associated listed items, as well as the simple inclusion of at least one of such items.

[0041] In this specification, the meaning expressed by“X includes at least one of A, B, or C” is that X includes at least one of A, or X includes at least one of B, or X includes at least one of C. That is, X can include only A, B, or C, or any combination of A, B, and C, and other possible contents / elements. Any combination of A, B, and C can be A, B, C, AB, AC, BC, or ABC.

[0042] In this specification, unless explicitly stated, the association relationship between structures is a direct association relationship, but also an indirect association relationship, is a total association relationship, but also a partial association relationship. For example, when describing“A is connected with B”, unless it is explicitly stated that A is directly connected with B, it should be understood that A is directly connected with B, and also indirectly connected with B; for example, when describing“A is on B”, unless it is explicitly stated that A is directly above B (AB is adjacent and A is above B), it should be understood that A is directly above B, and A is also indirectly above B (AB is separated by other elements, and A is above B). For example, when describing“A is in B”, unless it is explicitly stated that A is entirely in B, it should be understood that A is entirely in B, and A is also partially in B. By analogy.

[0043] As used in this specification and claims, the term“if’ is, unless the context clearly indicates otherwise, construed as meaning“when” or“upon” or“in response to determining” or“in response to detecting.” Likewise, the phrases“if it is determined” or“if [a described condition or event] is detected” are, unless the context clearly indicates otherwise, construed as meaning“upon determining” or“in response to determining” or“upon detecting [a described condition or event]” or “in response to detecting [a described condition or event]”

[0044] In the present disclosure, for the purpose of clear description and easy understanding, the direction in which the first housing of the applicator is moved relative to the locking member is regarded as the first direction, the direction in which the first housing applies the medical device is regarded as the lower side or the bottom side, the direction away from the side of the medical device application along the first direction is regarded as the upper side, the direction perpendicular to the first direction and away from the center of the applicator is regarded as the radially outer side, and the direction perpendicular to the first direction and towards the center of the applicator is regarded as the radially inner side. The position of other related components is described based on the above description, unless otherwise specified. The above description is only used for providing a reference direction for describing the relative position relationship of the structures, and is not a limitation on the actual arrangement of the structures of the embodiments in the present disclosure.

[0045] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0046] Referring to FIG. 1 and FIG. 2, FIG. 1 shows an exemplary perspective view of an applicator according to some embodiments of the present disclosure, and FIG. 2 shows an exemplary exploded view of the applicator according to some embodiments of the present disclosure. As shown in FIG. 1, an applicator 100 is provided, which for example includes a mistaken touch prevention mechanism. The mistaken touch prevention mechanism includes an execution assembly 90, a locking assembly for releasably holding the execution assembly 90 in the first direction, and a first mistaken touch prevention assembly 30 for preventing the execution assembly 90 from being released when the applicator is mistakenly touched. The execution assembly 90 is used for applying a medical device such as a detector, and the execution assembly 90 includes a driving mechanism and a first execution member 91 abutting against the driving mechanism in the first direction.

[0047] Referring to FIG. 3, FIG. 3 shows an exemplary sectional view of part of the assembly of the applicator according to some embodiments of the present disclosure. Optionally, the locking assembly includes a push portion 21 abutting against the first execution member 91 in the first direction, and the push portion 21 is capable of being separated from the first execution member 91 in the radial direction perpendicular to the first direction, so as to release the first execution member 91 in the first direction. The first mistaken touch prevention assembly 30 includes a stop portion 32 capable of abutting against the push portion 21 or the first execution member 91 in the radial direction, so as to block the push portion 21 and the first execution member 91 from being separated in the radial direction. The locking assembly is capable of moving relative to the first mistaken touch prevention assembly 30 in the first direction, so as to enable the push portion 21 to be out of contact with the first mistaken touch prevention assembly 30 in the radial direction and to be displaced from each other, and the first mistaken touch prevention assembly 30 is at least partially exposed, so as to be capable of abutting against the human skin in the first direction.

[0048] The locking assembly comprises a hollow first housing 10 and a locking member 20, which comprises a push portion 21 capable of being elastically moved laterally. The locking member 20 is movably connected with the first housing 10 in a first direction. The executing assembly 90 is arranged radially inside the first housing 10, wherein the driving mechanism is a spring 92 arranged in the first direction, one end of which abuts against the first housing 10 in the first direction, and the other end abuts against a first executing member 91. The spring 92 is kept in a compressed state in the first housing 10, thereby providing a continuous pushing force in the first direction to the first executing member 91. The first anti-mis-touch assembly 30 is exposed outside the first housing 10, for example, arranged at the bottom of the locking member 20. The first anti-mis-touch assembly 30 is capable of being moved in the first direction relative to the locking member 20, and is releasably connected with the first housing 10 in the first direction.

[0049] Specifically, optionally, the first housing 10 comprises a locking positioning portion, for example, a housing locking block 11 formed by the inward protrusion of the inner wall of the first housing 10, and the first anti-mis-touch assembly 30 comprises a limiting portion 31 and a stop portion 32, the limiting portion 31 being releasably abutted with the housing locking block 11 in the first direction. One of the first housing 10 and the first anti-mis-touch assembly 30 has a first locking accommodating groove 40. When the relative movement occurs between the first housing 10 and the locking member 20, and the first anti-mis-touch assembly 30 is not driven relative to the first housing 10, the stop portion 32 abuts against the push portion 21 in the radial direction perpendicular to the first direction. When the first anti-mis-touch assembly 30 is driven to move to an unlocking position relative to the first housing 10, the housing locking block 11 is disconnected with the limiting portion 31, and the push portion 21 is released and moved into the first locking accommodating groove 40. Optionally, the unlocking position is the position of the first anti-mis-touch assembly 30 relative to the first housing 10 during the relative movement between the first anti-mis-touch assembly 30 and the first housing 10, when the locking of the executing assembly needs to be released.

[0050] Optionally, the first housing 10 is a protective housing for protecting the medical device to be applied and the executing assembly 90, which is made of engineering plastic materials such as polycarbonate. The first housing 10 is, for example, in the shape of a hollow cylinder, and is sized and dimensioned to facilitate the user to hold or press. The first housing 10 is further nested with other auxiliary assemblies and anti-mis-touch assemblies for protecting the medical device to be applied inside by some connecting mechanisms. In addition, the first housing 10 is further provided with a spring assembly, so that the housing can rebound after being pressed downward due to mis-touch.

[0051] Referring to FIG. 4a and FIG. 4b, FIG. 4a shows an exemplary cross-sectional view of the applicator according to some embodiments of the present disclosure; FIG. 4b shows an enlarged view of section A in FIG. 4a. Further, the inner wall of the first housing 10 is provided with a housing locking block 11 protruding radially inward, and the upper end surface of the housing locking block 11 is used to support and fix the first anti-misoperation assembly 30. In addition, two symmetrical housing locking blocks are provided on the inner wall of the first housing 10, namely a first housing locking block 111 and a second housing locking block 112. The first housing locking block 111, for example, further includes a first locking portion 111a at the end thereof, which is used to form a releasable fixed connection in the first direction with the limiting portion 31 of the first anti-misoperation assembly 30.

[0052] The locking member 20 is provided with a first elastic arm, for example, the locking member 20 is also made of an engineering plastic material such as polycarbonate, and the locking member 20 is generally cylindrical, and a U-shaped opening is provided on the side wall of the locking member 20, wherein the material at the center of the U-shaped opening forms the first elastic arm. The distal end of the first elastic arm in the direction of its extension, for example, includes a push top 21, which is composed of the first elastic arm and a protruding rib portion protruding horizontally from the end thereof, and the protruding rib portion includes a first lateral protruding rib 211, a second lateral protruding rib 212, and a radial protruding rib 213. The two lateral protruding ribs, such as the first lateral protruding rib 211 and the second lateral protruding rib 212, are symmetrically arranged at the end of the first elastic arm relative to the radial protruding rib 213, and the radial protruding rib 213 is arranged to extend and protrude radially outward of the locking member 20.

[0053] In the case where the housing is pressed due to the user's misoperation, when the top of the first housing 10 is pressed downward in the first direction, the first locking portion 111a inside the first housing 10 pushes the limiting portion 31 of the first anti-misoperation assembly 30 downward, and the first anti-misoperation assembly 30 is not resisted by the outside at this time, so that the first anti-misoperation assembly 30 can move downward together with the first housing 10, and when the downward pressing force disappears, the spring assembly inside the applicator makes the first housing 10 drive the first anti-misoperation assembly 30 to rebound from bottom to top to the initial position.

[0054] Optionally, the first anti-misoperation assembly 30 comprises two stop portions 32, and the push portion 21 further comprises two lateral protrusions, when the first anti-misoperation assembly 30 is not subjected to external pushing and the first locking accommodation groove 40 is aligned with the push portion 21, the two stop portions 32 can respectively push against the two lateral protrusions in the radial direction. At this time, due to the pushing action of the stop portions 32 and the lateral protrusions, the push portion 21 cannot be separated from the first execution member 91 in the radial direction, thereby effectively preventing the accidental release of the execution assembly 90 in the case of misoperation. When it is necessary to apply the medical device, the user moves the first anti-misoperation assembly 30 to the unlocked position relative to the first housing 10 through a specific operation (such as pressing a specific part of the applicator 100). In this process, the first locking portion 111a is disconnected with the limiting portion 31, and at the same time, the stop portions 32 no longer block the push portion 21. Subsequently, the push portion 21 moves into the first locking accommodation groove 40 under the action of the first elastic arm on the locking member 20 or under the action of other related mechanisms, thereby releasing the first execution member 91. The first execution member 91 moves in the first direction under the pushing force of the spring 92, and the application of the medical device is completed.

[0055] In addition, the spring assembly arranged inside the first housing not only enables the first housing to drive the first anti-misoperation assembly 30 to rebound to the initial position after the applicator is pressed by misoperation, but also provides a stable driving force for the execution assembly during normal use, thereby ensuring that the medical device can be accurately and reliably applied. The entire anti-misoperation mechanism is compact and reasonable in design, and the components cooperate with each other, effectively preventing the accidental release of the execution assembly due to misoperation, and improving the safety and reliability of the applicator. The abutting position of the first locking portion 111a and / or the second locking portion 313 is formed as a locking inclined surface, which is used to guide the second locking portion 313 to slide laterally and be disconnected from the first locking portion 111a when the locking positioning portion 111 and the limiting portion 31 move relative to each other in the first direction.

[0056] The first anti-misoperation assembly 30 is a component nested inside the first housing 10, and the first anti-misoperation assembly 30 comprises at least one anti-misoperation member, and optionally, the first anti-misoperation assembly 30 comprises two symmetrically arranged first anti-misoperation members 301 and one second anti-misoperation member 302. Taking the first anti-misoperation member 301 as an example, the first anti-misoperation member 301 comprises two substantially long strip-shaped elastic members, and the limiting portion 31 and the stop portion 32 are arranged on one of the elastic members. The limiting portion 31 is formed by the end of the elastic member extension portion protruding laterally perpendicular to the extension direction of the elastic member extension portion, and the stop portion 32 is formed by the end protruding away from the limiting portion 31.

[0057] It should be noted that the state of the first anti-misoperation assembly 30 being driven relative to the first housing 10 is characterized by that the first housing 10 is pressed downward relative to the locking member 20, and the bottom of the first anti-misoperation assembly 30 is blocked and cannot extend out of the bottom of the applicator. This state is considered as the normal use of the applicator, that is, the lower end of the applicator completely abuts the target position of the human skin, and the housing is normally pressed downward by the operator. The state of the first anti-misoperation assembly 30 not being driven relative to the first housing 10 is characterized by that the first housing 10 is pressed downward, and the bottom of the first anti-misoperation assembly 30 is not blocked and can move downward together with the first housing 10, extending out of the bottom of the applicator. This state is considered as the misoperation of the applicator, that is, the bottom end of the applicator does not abut the target position of the human skin, and the user presses the housing due to misoperation.

[0058] The limiting portion 31, for example, comprises a first positioning portion 311 and a second positioning portion 312. The first positioning portion 311 comprises a second locking portion 311a, which abuts against a first locking portion 111a of the first housing locking block 111 in the first direction by means of a contact slope, so that the first anti-misoperation assembly 30 and the first housing 10 are releasably fixedly connected together. When the first anti-misoperation assembly 30 is driven relative to the first housing 10, since the first locking portion 111a and the second locking portion 311a are in contact with each other by means of the slope and abut against each other, the driving force in the first direction at the contact position will be converted into a lateral pushing force by the slope, so that the elastic member of the first anti-misoperation member 301 is elastically bent and retreats laterally. Thus, the first locking portion 111a and the second locking portion 311a slide relative to each other and are finally separated in the first direction.

[0059] Optionally, the abutting position of the first locking portion 111a and / or the second locking portion 311a is formed as a locking slope, which is used to guide the second locking portion 311a to slide laterally and disengage from the first locking portion 111a when the locking positioning portion 111 and the limiting portion 31 move relative to each other in the first direction.

[0060] The design of the locking slope can ensure that the lateral pushing force generated by the contact between the first locking portion 111a and the second locking portion 311a by means of the slope does not cause accidental unlocking when the applicator is normally used, that is, the first housing 10 is pressed downward relative to the locking member 20 and the bottom of the first anti-misoperation assembly 30 is blocked. At the same time, in the case that the applicator is misoperated, that is, the first housing 10 is pressed downward and the bottom of the first anti-misoperation assembly 30 is not blocked, the locking slope can guide the second locking portion 311a to smoothly slide laterally, so that the first locking portion 111a and the second locking portion 311a are separated in the first direction, thereby realizing the movement of the first anti-misoperation assembly 30 relative to the first housing 10 and preventing the execution assembly 90 from being accidentally released.

[0061] Further, the stop portion 32 in the first anti-misoperation assembly 30 abuts against the push portion 21 along the radial direction perpendicular to the first direction when the first anti-misoperation assembly 30 is not driven relative to the first shell 10, effectively preventing the push portion 21 and the first execution member 91 from being separated along the radial direction, and ensuring that the execution assembly 90 remains locked in the non-use state. When the first anti-misoperation assembly 30 is driven to the unlocking position, the stop portion 32 no longer blocks the push portion 21, and the push portion 21 can move along the radial direction into the first locking accommodation groove 40, releasing the first execution member 91 so that it can move along the first direction under the action of the driving mechanism, completing the application operation of the medical device.

[0062] The first anti-misoperation member 301 includes a first stop portion 321 and a second stop portion 322. When the first anti-misoperation assembly 30 is not driven relative to the first shell 10, i.e., the first shell 10 is pressed downward, and the first anti-misoperation assembly 30 moves downward together with the first shell 10, the first stop portion 321 descends to a position where it is level with the first lateral protrusion 211 along the radial direction outside the first lateral protrusion 211, and abuts against the first lateral protrusion 211 along the radial direction. Similarly, the second stop portion 322 also descends to a position where it is level with the second lateral protrusion 212 along the radial direction outside the second lateral protrusion 212, and abuts against the second lateral protrusion 212 along the radial direction. It is understood that the structure and connection mode of the other side elastic member of the first anti-misoperation member 301 are the same as described above, and will not be described in detail here.

[0063] Optionally, one of the first shell 10 and the first anti-misoperation assembly 30 is provided with a first locking accommodation groove 40 for accommodating the radial protrusion 213 on the locking member 20 when the first anti-misoperation assembly 30 is driven relative to the first shell 10, so that the medical device inside the applicator is released. It should be noted that when the first anti-misoperation assembly 30 is not triggered, the first execution member 91 of the execution assembly 90 provided inside the first anti-misoperation assembly 30 will be subjected to elastic pressure of the spring 92 along the axial direction, and the elastic pressure is transmitted to the first elastic arm through the contact between the internal components and the protruding portion of the push portion 21 inside the locking member, and the axial spring pressure is converted into radial outward extrusion pressure by means of the push inclined surface 201 on the push portion, and the radial outer side of the push portion 21 abuts against the inner side of the first shell 10 and is blocked by the first shell 10.

[0064] Optionally, the locking assembly comprises a locking member 20 and a first housing 10 capable of moving relative to the locking member 20 in the first direction, the first housing 10 comprising a locking positioning portion, the first anti-misoperation assembly 30 further comprising a limiting portion 31, the locking member 20 comprising a pushing portion 21, the first housing 10 having a first locking accommodating groove 40, when the first housing 10 and the first anti-misoperation assembly 30 are moved relative to the locking member 20 until the first locking accommodating groove 40 is radially aligned with the pushing portion 21, the stop portion 32 is radially abutted against the pushing portion 21, when the first housing 10 is driven relative to the first anti-misoperation assembly 30 so that the locking positioning portion is disengaged from the limiting portion 31 and the first housing 10 is moved relative to the locking member 20 until the first locking accommodating groove 40 is radially aligned with the pushing portion 21, the pushing portion 21 is capable of being elastically deformed in the radial direction and at least partially moving into the first locking accommodating groove 40 to release the first execution member 91.

[0065] In the embodiment provided with the radial protrusion 213, the radial protrusion 213 is also limited and always inside the first housing 10 and cannot enter the first locking accommodating groove 40. When the radial protrusion 213 is not aligned with the first locking accommodating groove 40, the inner wall of the first housing 10 is radially abutted against the pushing portion 21. When the first housing 10 and the first anti-misoperation assembly 30 are synchronously driven relative to the locking member 20 until the radial protrusion 213 is aligned with the first locking accommodating groove 40, the first lateral protrusion 211 and / or the second radial protrusion 212 are radially abutted against the stop portion 32, so that the pushing portion 21 cannot move into the first locking accommodating groove 40 in the radial direction, thereby keeping the locking of the first execution member 91. When the first housing 10 is driven relative to the first anti-misoperation assembly 30 and the locking member 20 to move to the unlocking position, the housing locking block 11 is disengaged from the first positioning portion 311. The first stop portion 321 and the first lateral protrusion 211 are radially away from each other, and the second stop portion 322 and the second lateral protrusion 212 are radially away from each other. In this way, the radial protrusion 213 of the pushing portion 21 is released and moves radially outward into the first locking accommodating groove 40.

[0066] Optionally, the pushing portion 21 comprises a pushing inclined surface 201 for converting the pushing force of the execution assembly 90 in the first direction into a radial pushing force, so that the pushing portion 21 is radially abutted against the locking assembly or the first anti-misoperation assembly 30.

[0067] In practical applications, the angle of the push-up inclined surface 201 can be selected as needed. If the angle of the push-up inclined surface 201 is too small, the pushing force of the execution assembly 90 in the first direction may not be effectively converted into sufficient radial pushing force, causing the push-up part 21 to be unable to stably abut against the locking assembly or the first anti-misoperation assembly 30, thereby affecting the reliability of the entire anti-misoperation mechanism. Conversely, if the angle of the push-up inclined surface 201 is too large, although a larger radial pushing force can be generated, it may increase the driving difficulty of the execution assembly 90, and even in extreme cases, cause excessive wear between the push-up part 21 and the locking assembly or the first anti-misoperation assembly 30, thereby shortening the service life of the mechanism.

[0068] In addition, the surface quality of the push-up inclined surface cannot be ignored. Excessive surface roughness may increase frictional resistance, affecting the transmission efficiency of the pushing force; and defects such as scratches and pits on the surface may become stress concentration points, reducing the structural strength of the push-up inclined surface. Therefore, during the manufacturing process, the push-up inclined surface needs to be finely machined and strictly detected to ensure that its surface quality meets the design requirements.

[0069] When the push-up part abuts against the locking assembly in the radial direction, the matching precision of the radial ribs and the first locking receiving groove also directly affects the performance of the anti-misoperation mechanism. If the matching gap is too large, the radial ribs may shift during the use of the applicator, causing unstable locking; and if the matching gap is too small, it may increase the assembly difficulty, and even cause jamming phenomenon when the temperature changes or is subjected to external force impact. Therefore, during the design and manufacturing stage, the dimensional tolerance of the radial ribs and the first locking receiving groove needs to be accurately controlled to ensure that the matching between them is both tight and flexible.

[0070] Optionally, the first positioning part 311 further comprises a first clamping groove 313, and the second positioning part 312 further comprises a second clamping groove 314. The first clamping groove 313 is a recessed area formed on the first positioning part 311 towards the first shell locking block 111, and the second clamping groove 314 is a recessed area formed on the second positioning part 312 towards the second shell locking block 112. When the first anti-mis-touch assembly 30 does not move relative to the first shell 10, the top of the first locking part 111a of the shell locking block 11 abuts against the upper side plane area of the first clamping groove 313, and the bottom inclined surface area of the first locking part 111a is in contact with the lower side inclined surface area of the first clamping groove 313. Thus, the first shell locking block 111 is elastically and releasably connected to the first clamping groove 313, and the second shell locking block 112 is elastically and releasably connected to the second clamping groove 314. The elastically and releasably connected form can enable the first shell 10 to move together with the first anti-mis-touch assembly 30 when the first anti-mis-touch assembly 30 is not driven relative to the first shell 10. When the first anti-mis-touch assembly 30 is driven relative to the first shell 10, the above connection mode will make the shell locking block slide off the clamping groove by the contact between the shell locking block and the lower side inclined surface of the clamping groove, and the first shell 10 is also separated from the first anti-mis-touch assembly 30.

[0071] It is understood that by setting the connection part of the first anti-mis-touch assembly 30 and the first shell 10 as an inclined surface, compared with the connection mode of a square protruding rib, there will be no step change of force over the protruding point, making the triggering of the anti-mis-touch assembly more convenient and smooth.

[0072] Optionally, the bottom of the elastic part of the first anti-mis-touch assembly 30 is further provided with a contact surface 34, and the applicator bottom is provided with two accommodation areas. In the state that the anti-mis-touch mechanism is not triggered, the contact surface 34 of the bottom of the first anti-mis-touch assembly 30 is embedded in the accommodation area and is flush with the accommodation area or slightly recessed relative to the bottom end surface of the locking part 20. The contact surface 34 is shaped as a sector, and the contact surfaces 34 of the two first anti-mis-touch assemblies 30 are symmetrically arranged on the bottom of the applicator according to a certain arrangement interval. In addition, it is understood by those skilled in the art that the total number and specific arrangement position of the anti-mis-touch assemblies are not limited in the present disclosure, for example, only one anti-mis-touch assembly is arranged. And the anti-mis-touch assembly is also arranged at other positions of the applicator, for example, in another possible embodiment, an anti-mis-touch assembly is additionally arranged around the central area inside the applicator. In this way, the central area also has a contact surface 34, which cooperates with the anti-mis-touch assemblies on both sides to increase the contact area and prevent the anti-mis-touch assembly from being difficult to be triggered due to soft skin of the user or special angle.

[0073] Optionally, when the first shell 10 is pressed and the first anti-mis-touch component 30 does not contact the human body, the first anti-mis-touch component 30 will extend with the first shell 10, and the extension distance corresponds to the distance that the first shell 10 is pressed and moved. When the contact surface 34 of the first anti-mis-touch component 30 is aligned with the bottom surface of the locking member 20, the extension distance is also the distance between the contact surface 34 and the bottom surface of the locking member 20. By setting the distance between the lower surface of the stop portion 32 and the contact surface 34 in the first direction and the distance between the push top 21 and the lower end surface of the locking member 20, the triggering timing of the first anti-mis-touch component 30 is adjusted. For example, when the medical device is applied to the human body, the lower end of the locking member 20 of the applicator and the contact surface 34 of the first anti-mis-touch component 30 exposed by the lower end of the locking member 20 abut against the skin of the human body. At this time, if the first shell 10 is pressed relative to the locking member 20, the contact surface 34 will be pushed by the locking positioning portion of the first shell 10 and can possibly press against the skin surface, and because the human skin is elastic, the contact surface 34 can move a distance in the extension direction to the skin of the human body.

[0074] To avoid that the extension distance of the first anti-mis-touch component 30 due to the skin being pressed and depressed causes the locking member to be unable to be normally unlocked, for example, the distance between the lower surface of the stop portion 32 and the contact surface 34 in the first direction is set to be slightly greater than the distance between the upper end surface of the radially extending portion of the push top 21 (for example, the upper end surface of the radial protruding rib 213) and the bottom end of the locking member 20. Optionally, by setting the distance between the contact surface 34 and the lower surface of the stop portion 32 to be 1 mm greater than the distance between the upper end surface of the radial protruding rib 213 and the bottom end of the locking member 20, even if the contact surface 34 is deformed by 1 mm by pressing the skin when the applicator abuts against the human body, the stop portion 32 will not block the radial protruding rib 213 from being popped out in the radial direction.

[0075] Optionally, a check surface 35 downward in the first direction is further arranged below the limiting portion 31 of the first anti-mis-touch component 30. Taking the first shell locking block 111 as an example, when the applicator is normally used and the bottom of the first anti-mis-touch component 30 is blocked and cannot move downward, the first shell locking block 111 will move downward in the vertical direction relative to the first anti-mis-touch component 30, so that the shell locking block 111 is separated from the corresponding first clamping groove 313, and the first shell 10 is no longer connected with the first anti-mis-touch component 30. At this time, the first locking portion 111a of the first shell locking block 111 will be lowered to the lower side of the check surface 35 and is blocked by the check surface 35 in the vertical direction and will not rebound to the first clamping groove 313. That is, the check surface 35 is used to prevent the locking portion of the shell locking block 11 from returning to the original clamping groove when the first anti-mis-touch component 30 is driven relative to the first shell 10.

[0076] [Corrected according to Rule 91 on 21.11.2025] For the convenience of understanding the complete technical solution of the present disclosure and its use effect, the action process of the applicator of some embodiments of the present disclosure is explained and described below in combination with FIGS. 4a to 6. FIG. 5 shows an exemplary cross-sectional view of the applicator of some embodiments of the present disclosure, in which the housing of the applicator is being pressed relative to the locking piece, and the anti-misoperation assembly is also driven relative to the housing; FIG. 6 shows an exemplary cross-sectional view of the applicator of some embodiments of the present disclosure, in which the housing of the applicator has been completely pressed relative to the locking piece, and the anti-misoperation assembly has also been driven relative to the housing.

[0077] Optionally, when the user needs to use the applicator, the lower end of the locking piece 20 and the bottom contact surface of the first anti-misoperation assembly 30 abut against the skin surface. When the user presses the housing, the bottom contact surface of the first anti-misoperation assembly 30 cannot follow the first housing 10 to move downward due to the obstruction of the skin, and the second locking part 311a of the first positioning part 311 at the top of the first anti-misoperation assembly 30 slides relative to the first housing locking block 111 of the first housing 10. At the same time, the first locking part 111a of the first housing locking block 111 presses the first positioning part 311 inward at the first clamping groove 313, and the elastic member of the first anti-misoperation assembly 30 deforms inward under the action of the first locking part 111a, and then the first locking part 111a descends below the check surface 35 and is blocked by the check surface 35. At the same time, the first locking receiving groove 40 of the first housing 10 also moves to be radially aligned with the radial protruding rib 213 of the locking piece 20, so that the first elastic arm of the locking piece 20 is no longer hindered by the first anti-misoperation assembly 30 or the first housing 10, and the radial protruding rib 213 of the locking piece 20 expands outward, and moves into the first locking receiving groove 40. Thus, the execution assembly 90 loaded with medical devices inside the applicator is released, and the needle assisting is completed. Similarly, the structure on the other side of the first anti-misoperation assembly 30 performs the same movement as described above.

[0078] In contrast, referring to FIG. 7, which shows an exemplary cross-sectional view of an applicator according to some embodiments of the present disclosure, the housing of the applicator is being pressed against the locking member, while the anti-misuse assembly is not being driven against the housing. When the applicator is misused, the first housing 10 is pressed downwardly, and since the housing locking block 11 of the first housing 10 is still connected to the limiting portion 31 of the first anti-misuse assembly 30, the first anti-misuse assembly 30 is also driven to move downwardly together with the first housing 10 and extend out of the bottom of the first housing 10. At the same time, the stop portion 32 of the first anti-misuse assembly 30 is lowered to the lateral protrusions of the locking member 20. Specifically, the first stop portion 321 is lowered outside the first lateral protrusion 211 to a position where it is flush with the first lateral protrusion 211 and abuts against the first lateral protrusion 211 in the radial direction, and the second stop portion 322 is lowered outside the second lateral protrusion 212 to a position where it is flush with the second lateral protrusion 212 and abuts against the second lateral protrusion 212 in the radial direction. Since the locking member 20 is abutted by the stop portion 32, the radial protrusion 213 cannot enter the first locking accommodating groove 40, and the execution assembly 90 loaded with medical devices inside the applicator is not released. When the first housing 10 is no longer pressed, the first housing 10 drives the first anti-misuse assembly 30 to return to the initial position, and thus the first anti-misuse assembly 30 completes one anti-misuse movement.

[0079] Referring to FIG. 8 and FIG. 9, FIG. 8 shows an exemplary cross-sectional view of an applicator according to some embodiments of the present disclosure, and FIG. 9 shows an enlarged view of part B in FIG. 8. Optionally, the anti-misuse assembly is also arranged in a position close to the center in the radial direction. For example, the locking assembly includes an abutting member 240 for abutting against the human body 300 and a second housing 210 capable of moving relative to the abutting member 240, and the second anti-misuse assembly 230 is arranged in an axially movable manner inside the second housing 210. The anti-misuse mechanism includes the second anti-misuse assembly, and a second locking accommodating groove 250 is arranged on the second anti-misuse assembly 230. At the same time, an execution assembly is arranged inside the second housing 210 in the radial direction, and the execution assembly includes a second execution member 220 and an axial spring 260 for pushing the second execution member 220 in a first direction towards the bottom of the applicator. The second execution member 220 includes an inner side wall close to the inside of the second housing 210 in the radial direction, and a pushing portion is arranged on the inner side wall. For example, the pushing portion includes a second elastic arm 225, which extends upwards, and the distal end of the extension portion of the second elastic arm 225 is provided with an execution locking portion 225a protruding outwardly in the radial direction, and the lower side of the execution locking portion 225a is provided with a locking inclined surface 225b.

[0080] Meanwhile, the inner side of the second housing 210 is provided with a trigger 215 extending downward along the axial direction of the second housing 210 from the inner top wall of the second housing 210, and the trigger 215 is provided with a locking opening 215a, and the lower side edge of the locking opening 215a forms a release slope 215b for cooperating with the locking slope 225b on the lower side of the execution locking part 225a. When the applicator is in the initial state, and the second housing 210 does not move relative to the second execution member 220 and the second anti-misoperation assembly 230, the execution locking part 225a is at least partially accommodated inside the locking opening 215a, and the execution locking part 225a is in contact with the release slope 215b on the trigger 215 by means of the locking slope 225b. Since the second execution member 220 is subjected to the spring elastic force of the axial spring 260, the elastic force is transmitted to the contact surface between the execution locking part 225a and the release slope 215b in the first direction, so that the second elastic arm 225 is subjected to the pushing force in the radial direction.

[0081] The second anti-misoperation assembly 230 is provided with a third stop part 232 extending in the first direction, and the third stop part 232 is arranged at the upper end of the part extending in the first direction of the second anti-misoperation assembly 230, and the second locking accommodation groove 250 is arranged on the lower side of the third stop part 232. The third stop part 232 is arranged on the radial inner side of the second execution member 220, and the radial inner side of the third stop part 232 is adjacent to the supporting inner wall 214 of the housing. Therefore, when the second elastic arm 225 is subjected to the pushing force in the radial direction, the third stop part 232 can support the second elastic arm 225 in the radial direction, and lock the second elastic arm 225 in the original position. Since the third stop part 232 is clamped in the radial direction by the supporting inner wall 214 of the housing and the second elastic arm 225 of the second execution member 220, when the second housing 210 and the second execution member 220 move downward at the same time, the third stop part 232 also moves downward at the same time by means of the friction force between the third stop part 232 and the second housing 210 and the second execution member 220, forming a releasable fixed connection in the first direction between the third stop part 232 and the second execution member 220, and at this time, the third stop part 232 also functions as a limiting part. Meanwhile, the relative position between the second anti-misoperation assembly 230, the second housing 210 and the second execution member 220 remains unchanged, and they move together relative to the abutting member 240 in the first direction. Those skilled in the art understand that a housing locking block protruding radially from the inner wall of the housing supporting inner wall 214 can also be arranged on the housing supporting inner wall 214, and a limiting part cooperating with the housing locking block can also be arranged on the second anti-misoperation assembly 230, so as to further enhance the reliability of the connection between the second housing 210 and the second anti-misoperation assembly 230 by means of the releasable cooperation between the two in the first direction.

[0082] Referring to FIG. 9 and FIG. 10, in FIG. 9, the shell is not moved relative to the abutting member in the first direction, and the anti-misoperation assembly is not driven; FIG. 10 shows a schematic diagram of the part in FIG. 9 in some changed states, in which the shell is pressed relative to the abutting member in the first direction, and the anti-misoperation assembly is driven relative to the shell. When the second shell 210 is pressed relative to the abutting member 240, and the second anti-misoperation assembly 230 is not blocked in the first direction, the second execution member 220 will be driven downward by the spring pressure of the axial spring 260 in the first direction, and the third stop portion 232 will abut against the second elastic arm 225 in the radial direction, so that the second execution member 220 cannot be unlocked with the shell. After the second anti-misoperation assembly 230 is driven to move relative to the second shell 210, the radially inner side of the second elastic arm 225 of the second execution member 220 is elastically deformed in the radial direction under the action of the axial spring 260 and the release slope 215b of the second shell 210, so that the second elastic arm 225 enters the inside of the second locking accommodating groove 250, thereby making the execution locking portion 225a avoid the release slope 215b of the shell in the first direction, and releasing the locking between the second execution member 220 and the second shell 210 in the first direction.

[0083] Therefore, the second anti-misoperation assembly 230 is arranged to be more biased towards the central region inside the applicator as a whole, and the bottom contact surface of the second anti-misoperation assembly 230 is also closer to the inside of the applicator, so that when the second anti-misoperation assembly 230 is used by the user, the second anti-misoperation assembly 230 is closer to the center in the extended position, and even if the user accidentally blocks the fingers on the edge part of the applicator, the extension of the anti-misoperation assembly will not be blocked, thereby further reducing the possibility of misoperation.

[0084] Optionally, the second execution member 220 comprises a second elastic arm 225 extending in the radial direction, and the execution locking portion 225a is arranged at the end of the second elastic arm 225, and the second elastic arm 225 can be elastically deformed in the radial direction to drive the execution locking portion 225a to move into or out of the second locking accommodating groove 250 of the second anti-misoperation assembly 230.

[0085] When the second elastic arm 225 drives the execution locking part 225a to move into the second locking accommodation slot 250, the second execution member 220 and the second anti-misoperation assembly 230 are in a locked state, at which time the second execution member 220 cannot move relative to the second anti-misoperation assembly 230 in the first direction, thereby ensuring that the execution assembly cannot be accidentally released in the case of abnormal use, such as misoperation, and the like. When the applicator needs to be used normally, the second anti-misoperation assembly 230 is operated in a specific manner, for example, a specific driving force is applied to move it relative to the second housing 210, so that the second elastic arm 225 is elastically deformed radially inward under the combined action of the axial spring 260 and the second housing 210, and the execution locking part 225a moves out of the second locking accommodation slot 250, thereby releasing the locking between the second execution member 220 and the second anti-misoperation assembly 230, and the second execution member 220 can move in the first direction under the action of the axial spring 260, thereby driving the execution assembly to complete the corresponding operation, such as releasing the medical device loaded inside, and the like. This design realizes flexible control of the locking and unlocking between the second execution member 220 and the second anti-misoperation assembly 230 through the cooperation of the second elastic arm 225, the execution locking part 225a, and the second locking accommodation slot 250, effectively improves the safety and reliability of the applicator, and reduces the potential risks caused by misoperation.

[0086] Optionally, the lower side edge of the locking opening 215a forms a release slope 215b, which is configured to cooperate with a locking slope 225b on the second execution member 220.

[0087] The release slope 215b is configured to be in contact with the locking slope 225b on the lower side of the execution locking part 225a of the second execution member 220 when the applicator is in the initial state, so that the second elastic arm 225 of the second execution member 220 is subjected to a radial inward pushing force by the elastic force of the axial spring 260 acting on the second execution member 220.

[0088] The cooperation between the release slope 215b and the locking slope 225b is configured to allow the second elastic arm 225 to be elastically deformed radially inward after the second anti-misoperation assembly 230 is driven to move relative to the second housing 210, so that the execution locking part 225a avoids the release slope 215b in the first direction, thereby releasing the locking between the second execution member 220 and the second trigger 215, and between the second execution member 220 and the second housing 210.

[0089] In actual operation, when the second anti-mis-touch component 230 moves relative to the second housing 210 along a predetermined direction, its movement will trigger a series of chain reactions. The movement of the second anti-mis-touch component 230 will change its relative position relationship with the second execution member 220, and this position change will in turn affect the contact state between the release slope 215b and the locking slope 225b.

[0090] Specifically, with the movement of the second anti-mis-touch component 230, the release slope 215b will gradually reduce the blocking effect on the locking slope 225b, so that the second elastic arm 225 originally subjected to the radial inward thrust force can be released. After losing external constraints, the second elastic arm 225 will elastically deform radially inward according to its own elastic properties. This deformation process directly causes the execution locking part 225a to produce a displacement in the first direction in space, thereby avoiding the release slope 215b that originally contacts it.

[0091] When the execution locking part 225a completely avoids the release slope 215b, the locking state between the second execution member 220 and the second trigger 215 and the second execution member 220 and the second housing 210 is released, and the applicator can be converted from the initial state to the operable state, providing necessary conditions for subsequent operation steps.

[0092] Optionally, the lower side edge of the locking opening 215a forms a release slope 215b, which is configured to cooperate with the locking slope 225b on the second execution member 220;

[0093] Wherein, the release slope 215b is configured to contact the locking slope 225b on the lower side of the execution locking part 225a of the second execution member 220 when the applicator is in the initial state, so that the elastic arm 225 of the second execution member 220 is subjected to a radial inward thrust force by the elastic force of the axial spring 260 of the second execution member 220;

[0094] The cooperation between the release slope 215b and the locking slope 225b is configured to allow the elastic arm 225 to elastically deform radially inward after the second anti-mis-touch component 230 is driven to move relative to the second housing 210, so that the execution locking part 225a avoids the release slope 215b in the first direction, to release the locking between the second execution member 220 and the second trigger 215 and the second execution member 220 and the second housing 210.

[0095] While several embodiments of the present disclosure have been shown and described herein, it is to be understood that the embodiments are merely exemplary. Numerous changes, substitutions, and equivalents will occur to those skilled in the art without departing from the spirit and scope of the present disclosure. It should be understood that in the process of rendering the present disclosure into the art described herein, various alternatives, modifications and equivalents will be suggested to those skilled in the art. It is intended that the application embrace all such alternatives, modifications and equivalents. The claims appended hereto are intended to cover all such alternatives, modifications and equivalents.

Claims

1. A mistaken touch prevention mechanism characterized by comprising: The application relates to a lock assembly, comprising: an execution assembly comprising a first execution member; a locking assembly comprising a pushing member abutting against the first execution member in a first direction; a first anti-misoperation assembly comprising a stopper; and the first anti-misoperation assembly can be abutted by an external force in the first direction to switch from a locked state to an unlocked state, in the locked state, the stopper can abut against the pushing member or the first execution member in a radial direction perpendicular to the first direction to block the pushing member and the first execution member from being separated in the radial direction; in the unlocked state, the pushing member of the locking assembly can move in the first direction relative to the first anti-misoperation assembly when the pushing member is driven to move in the first direction, and the pushing member or the first execution member is allowed to give way to each other in the radial direction relative to the first anti-misoperation assembly, so that the pushing member and the first execution member can be separated in the radial direction.

2. The anti-mis-touch mechanism according to claim 1, wherein The locking assembly comprises a locking member and a first housing capable of moving relative to the locking member in the first direction, the first housing comprises a locking positioning part, the first anti-misoperation assembly further comprises a limiting part, the locking member comprises the pushing member, the first housing has a first locking accommodating groove, when the first housing and the first anti-misoperation assembly jointly move relative to the locking member until the first locking accommodating groove is aligned with the pushing member in the radial direction, the stopper abuts against the pushing member in the radial direction, when the first housing is driven relative to the first anti-misoperation assembly so that the locking positioning part is disconnected from the limiting part and the first housing moves relative to the locking member until the first locking accommodating groove is aligned with the pushing member in the radial direction, the pushing member can be elastically deformed in the radial direction and at least partially moved into the first locking accommodating groove to release the first execution member.

3. The anti-mis-touch mechanism according to claim 2, wherein The locking member comprises a first elastic arm, a side wall of the locking member is provided with a U-shaped opening, the first elastic arm is formed by the center material of the U-shaped opening of the side wall of the locking member, a distal end of the first elastic arm is provided with the pushing member, the pushing member comprises a first lateral protrusion, a second lateral protrusion and a radial protrusion, the first lateral protrusion and the second lateral protrusion are symmetrically arranged at the distal end of the first elastic arm relative to the radial protrusion, and the radial protrusion extends and protrudes outward in the radial direction of the locking member.

4. The anti-mis-touch mechanism according to claim 2, wherein The first anti-misoperation assembly comprises two stoppers, and the pushing member further comprises two lateral protrusions, when the first anti-misoperation assembly is not abutted by an external force and the first locking accommodating groove is aligned with the pushing member, the two stoppers can abut against the two lateral protrusions in the radial direction respectively.

5. The anti-mistouch structure according to claim 4, characterized in that, The pushing member further comprises a radial protrusion extending outward in the radial direction, when the pushing member is not aligned with the first locking accommodating groove, the radial protrusion is used for abutting against an inner wall of the first housing, and the two lateral protrusions are symmetrically arranged relative to the radial protrusion.

6. The anti-mistouch structure of claim 4, wherein, The locking member is further used for abutting against human skin, and the distance between the bottom of the stopper and the bottom end of the first anti-misoperation assembly in the first direction is greater than the distance between the upper surface of the lateral protrusion and the bottom end of the locking member.

7. The anti-mistouch mechanism according to any one of claims 2 to 6, characterized in that, The limiting part is releasably connected with the locking positioning part along the first direction, the first anti-misoperation assembly further comprises a first elastic member capable of elastically deforming, the limiting part is arranged at the end of the first elastic member, when the first anti-misoperation assembly is abutted along the first direction and the first shell is driven relative to the first anti-misoperation assembly, the first elastic member elastically deforms laterally, so that the locking positioning part is disconnected with the limiting part.

8. The anti-mistouch mechanism according to claim 7, wherein The locking positioning part comprises a shell locking block protruding radially inward from the inner wall of the first shell, the shell locking block comprises a first locking portion, the limiting part comprises a second locking portion elastically releasably engaged with the first locking portion, at least one of the first locking portion and the second locking portion is formed as an inclined surface at the abutting position thereof, so as to make the second locking portion slide laterally along the inclined surface when the two are moved away from each other along the first direction until the second locking portion is disconnected with the first locking portion.

9. The anti-mistouch mechanism according to claim 8, wherein The abutting position of the first locking portion and / or the second locking portion is formed as a locking inclined surface, which is used to guide the second locking portion to slide laterally and be disconnected with the first locking portion when the locking positioning part and the limiting part move relative to each other along the first direction.

10. The anti-mistouch mechanism according to claim 8, wherein The limiting part further comprises a check surface arranged towards the bottom end of the first anti-misoperation assembly, which is used to abut against the upper surface of the shell locking block when the first shell is pressed and then reversely moved after the second locking portion is disconnected with the first locking portion.

11. The anti-mistouch mechanism according to any one of claims 1 to 10, characterized in that, The pushing portion comprises a pushing inclined surface, which is used to convert the pushing force of the execution assembly along the first direction into a radial pushing force, so that the pushing portion abuts against the locking assembly or the anti-misoperation assembly in the radial direction.

12. The anti-mistouch mechanism according to any one of claims 1 to 11, characterized in that, The locking assembly comprises a second shell, the anti-misoperation mechanism comprises a second anti-misoperation assembly, the second anti-misoperation assembly has a second locking accommodating groove, the execution assembly comprises a second execution member, the second execution member comprises an execution locking portion capable of elastically deforming in the radial direction, the second execution member comprises an inner side wall close to the inner side of the second shell in the radial direction, and a pushing portion is arranged on the inner side wall; When the second anti-misoperation assembly is not abutted by an external force, the stop portion abuts against the execution locking portion in the radial direction, so as to block the execution locking portion from elastically deforming in the radial direction and moving into the second locking accommodating groove, thereby preventing the second execution member from being released; when the second anti-misoperation assembly is abutted by an external force and the second shell and the second execution member move relative to the second anti-misoperation assembly until the second locking accommodating groove is aligned with the execution locking portion in the radial direction, the execution locking portion can deform in the radial direction and move into the second locking accommodating groove to be separated from the pushing portion.

13. The anti-mistouch mechanism according to claim 12, wherein The second shell comprises a locking opening, the pushing portion is arranged at the bottom of the locking opening, and the execution locking portion at least partially extends into the locking opening; at least one of the execution locking portion and the pushing portion is formed as an inclined surface at the abutting position thereof, so as to convert the pushing force of the driving mechanism along the first direction into a radial pushing force.

14. The anti-mistouch mechanism according to claim 13, wherein The second actuating member comprises a second elastic arm extending in the radial direction, and the actuating locking portion is arranged at the end of the second elastic arm, and the second elastic arm is elastically deformable in the radial direction to drive the actuating locking portion to move into or out of the second locking accommodating slot of the second mistaken touch prevention assembly.

15. The anti-mistouch mechanism according to claim 13, wherein The second housing further comprises a supporting inner wall extending in the first direction and a trigger member, and the locking opening is arranged on the trigger member, and the stop portion is arranged in the radial direction between the actuating locking portion and the supporting inner wall, so that the stop portion is clamped by the actuating locking portion and the supporting inner wall in the radial direction.

16. The anti-mistouch mechanism of claim 15, wherein, The lower side edge of the locking opening forms a release slope for cooperating with a locking slope on the second actuating member; The release slope is configured to be in contact with the locking slope on the lower side of the actuating locking portion of the second actuating member when the applicator is in the initial state, so that the second elastic arm of the second actuating member is subjected to an inward radial thrust force by the elastic force of the axial spring on the second actuating member; The cooperation between the release slope and the locking slope is configured to allow the second elastic arm to be elastically deformed in the radial direction inwardly after the second mistaken touch prevention assembly is driven to move relative to the second housing, so that the actuating locking portion avoids the release slope in the first direction to release the locking between the second actuating member and the trigger member and between the second actuating member and the second housing.

17. An applicator characterized by, The mistaken touch prevention mechanism comprises any one of the mistaken touch prevention mechanisms according to claims 1-16.

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