Mistaken touch prevention mechanism and applicator
By designing an anti-accidental activation mechanism, the medical device is prevented from being released by the applicator upon accidental activation, thus solving the problem of accidental triggering of the applicator and achieving effective utilization and safe use of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2026-03-31
AI Technical Summary
The applicator is easily triggered during use, causing the medical device to be released without being aimed at the target position, resulting in waste of equipment and safety hazards.
An anti-accidental activation mechanism is designed, including an actuator, a locking component, and an anti-accidental activation component. By cooperating with the stop and the push top, the push top is prevented from separating radially from the actuator, ensuring that the applicator does not release the medical device in case of accidental activation.
It effectively prevents accidental triggering of the applicator, avoids improper release of medical devices, reduces equipment waste, and improves safety during use.
Smart Images
Figure CN121754319A_ABST
Abstract
Description
Technical Field
[0001] This disclosure generally relates to the field of medical device technology. More specifically, this disclosure relates to an anti-accidental activation mechanism and applicator. Background Technology
[0002] As a medical device, the applicator is generally used to assist users in more accurately delivering medical devices to the target area on the human body. During use, the user releases the medical device by placing the applicator against the target area and pressing the handle. However, due to its easily triggered design, accidental activation can sometimes occur, causing the applicator to be misaligned and the medical device to still eject. This not only wastes equipment but also poses certain safety hazards, especially with some medical devices containing sharp parts such as needles.
[0003] In view of this, there is an urgent need to provide an anti-accidental contact mechanism and applicator to meet the anti-accidental contact requirements of the applicator. Summary of the Invention
[0004] In order to at least address the technical problems mentioned above, this disclosure proposes an anti-accidental touch mechanism and applicator in several aspects.
[0005] In a first aspect, this disclosure provides an anti-accidental touch mechanism, comprising: an actuating component including an actuating member; a locking component including a pusher abutting against the actuating member along a first direction; an anti-accidental touch component including a stop portion; and the anti-accidental touch component being able to be externally abutted along the first direction to switch from a locked state to an unlocked state, wherein in the locked state, the stop portion is able to abut against the pusher or the actuating member in a radial direction perpendicular to the first direction to prevent the pusher from separating radially from the actuating member; and in the unlocked state, the pusher of the locking component is able to move relative to the anti-accidental touch component along the first direction when driven to move along the first direction, thereby causing the pusher or the actuating member and the anti-accidental touch component to recoil radially from each other, allowing the pusher and the actuating member to separate radially.
[0006] In some embodiments, the locking assembly includes a locking member and a housing movable relative to the locking member in a first direction. The locking member includes a pusher, and the housing has a locking receiving groove. When the housing and the anti-accidental contact assembly move together relative to the locking member until the locking receiving groove and the pusher are radially aligned, a stop abuts against the pusher in the radial direction. When the housing is driven relative to the anti-accidental contact assembly to disengage the locking positioning portion from the limiting portion, thereby moving the housing relative to the locking member until the locking receiving groove and the pusher are radially aligned, the pusher can be radially elastically deformed and at least partially moved into the locking receiving groove to release the actuator.
[0007] In some embodiments, the anti-accidental contact component includes two stops, and the push top also includes two lateral ribs. When the anti-accidental contact component is not subjected to external abutment and the locking receiving groove is aligned with the push top, the two stops can abut against the two lateral ribs radially, respectively.
[0008] In some embodiments, the push top also includes radial ribs extending radially outward. When the push top is not aligned with the locking receiving groove, the radial ribs are used to abut against the inner wall of the housing. The two lateral ribs are symmetrically arranged relative to the radial ribs.
[0009] In some embodiments, the locking member is also used to abut against human skin, and the distance between the bottom of the stop portion and the bottom end of the anti-accidental contact component along the first direction is greater than the distance between the upper surface of the lateral rib and the bottom end of the locking member.
[0010] In some embodiments, the housing includes a locking positioning portion, a limiting portion and the locking positioning portion are releasably connected in a first direction, and the anti-accidental touch component further includes a first elastic member capable of elastic deformation, the limiting portion being disposed at the end of the first elastic member. When the anti-accidental touch component is abutted in the first direction and the housing is driven relative to the anti-accidental touch component, the first elastic member elastically deforms laterally, causing the locking positioning portion and the limiting portion to disengage.
[0011] In some embodiments, the locking positioning portion includes a housing locking block that protrudes radially inward from the inner wall of the housing. The housing locking block includes a first locking portion, and the limiting portion includes a second locking portion that is elastically and releasably engaged with the first locking portion. At least one of the first locking portion and the second locking portion is formed as a slope at the abutment portion to allow the second locking portion to slide laterally along the slope until it disengages from the first locking portion when the two move in opposite directions in a first direction.
[0012] In some embodiments, the limiting portion further includes a check surface disposed toward the bottom end of the anti-accidental contact component. The check surface is used to abut against the upper surface of the housing locking block when the housing is pressed, thereby disengaging the second locking portion from the first locking portion, and then moving in the opposite direction.
[0013] In some embodiments, the locking assembly includes a housing with a push top, the anti-accidental contact assembly has a locking receiving groove, and the actuator includes an actuating locking portion capable of radial elastic deformation. When the anti-accidental contact assembly is not subjected to external abutment, the stop portion abuts against the actuating locking portion radially, preventing the actuating locking portion from moving into the locking receiving groove through radial elastic deformation, thereby preventing the actuator from being released. When the anti-accidental contact assembly is subjected to external abutment, and the housing and the actuator move together relative to the anti-accidental contact assembly until the locking receiving groove and the actuating locking portion are radially aligned, the actuating locking portion can deform radially and move into the locking receiving groove to separate from the push top.
[0014] In some embodiments, the housing includes a locking opening, a push top disposed at the bottom of the locking opening, an action locking portion extending at least partially into the locking opening, and at least one of the action locking portion and the push top forming a ramp at their contact point to convert the thrust of the drive mechanism along a first direction into a radial thrust.
[0015] In some embodiments, the housing further includes a supporting inner wall extending along a first direction and a trigger, a locking opening is disposed on the trigger, and a stop is disposed radially between the locking execution portion and the supporting inner wall, so that the stop is radially clamped by the locking execution portion and the supporting inner wall.
[0016] In a second aspect, this disclosure provides an applicator that includes the anti-accidental contact mechanism described above.
[0017] Based on the above description of the solution disclosed herein, those skilled in the art will understand that the present disclosure provides an anti-accidental contact mechanism, comprising: an actuating component including an actuating member; a locking component including a pusher that abuts against the actuating member along a first direction; an anti-accidental contact component including a stop portion capable of abutting against the pusher or the actuating member in a radial direction perpendicular to the first direction to prevent the pusher from separating radially from the actuating member; and the anti-accidental contact component being able to be externally abutted in the first direction, so that the anti-accidental contact component can move relative to the pusher of the locking component in the first direction, thereby allowing the anti-accidental contact component to radially avoid the pusher or the actuating member, enabling the pusher to separate radially from the actuating member. Through the above-described anti-accidental contact mechanism, it is possible to prevent the release of medical devices when the applicator is accidentally activated, thus preventing problems such as equipment waste. Attached Figure Description
[0018] The above and other objects, features, and advantages of exemplary embodiments of this disclosure will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:
[0019] Figure 1 An exemplary perspective view of an applicator according to some embodiments of this disclosure is shown;
[0020] Figure 2 An exemplary exploded view of the applicator of some embodiments of this disclosure is shown;
[0021] Figure 3 An exemplary cross-sectional view of some components of an applicator according to some embodiments of this disclosure is shown;
[0022] Figure 4a An exemplary cross-sectional view of an applicator according to some embodiments of this disclosure is shown;
[0023] Figure 4b It shows Figure 4a An enlarged schematic diagram of part A in the middle;
[0024] Figure 5 An exemplary cross-sectional view of an applicator according to some embodiments of this disclosure is shown;
[0025] Figure 6 An exemplary cross-sectional view of an applicator according to some embodiments of this disclosure is shown;
[0026] Figure 7 An exemplary cross-sectional view of an applicator according to some embodiments of this disclosure is shown;
[0027] Figure 8 An exemplary cross-sectional view of an applicator according to some embodiments of this disclosure is shown;
[0028] Figure 9 It shows Figure 8 Enlarged schematic diagram of part B;
[0029] Figure 10 It shows Figure 9 The diagram shows some parts in different states. Detailed Implementation
[0030] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, not all of them. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.
[0031] It should be understood that the terms “comprising” and “including” used in this disclosure and claims indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0032] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. As used in this disclosure and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this disclosure and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.
[0033] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrases "if determined" or "if [the described condition or event] is detected" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once [the described condition or event] is detected," or "in response to detection of [the described condition or event]."
[0034] In this disclosure, for clarity and ease of understanding, the direction of relative movement between the applicator housing and the locking member is generally considered the first direction, the direction in which the housing applies the medical device is considered the lower or bottom side, the direction away from the side applying the medical device along the first direction is considered the upper side, the direction perpendicular to the first direction away from the center of the applicator is considered the radially outer side, and the direction perpendicular to the first direction toward the center of the applicator is considered the radially inner side. Unless otherwise specified, the positional descriptions of other related components will also be based on this. The purpose of the above description is only to provide a reference direction for describing the relative positional relationships of the various structures, and not to limit the actual structural arrangement of the embodiments in this disclosure.
[0035] The specific embodiments disclosed herein will now be described in detail with reference to the accompanying drawings.
[0036] Reference Figure 1 and Figure 2 , Figure 1 An exemplary perspective view of an applicator according to some embodiments of this disclosure is shown; Figure 2 An exemplary exploded view of an applicator representing some embodiments of this disclosure is shown. Figure 1 As shown, an applicator 100 is provided, which may include, for example, an anti-accidental activation mechanism. The anti-accidental activation mechanism may include an actuation component 90, a locking component for releasably holding the actuation component 90 along a first direction, and an anti-accidental activation component 30 for preventing the actuation component 90 from being released when the applicator is accidentally activated. The actuation component 90 can be used to apply medical devices such as detectors, and the actuation component 90 may include a drive mechanism and an actuating member 91 abutted by the drive mechanism along the first direction.
[0037] See also Figure 3 , Figure 3Exemplary cross-sectional views of some components of an applicator according to some embodiments of this disclosure are shown. In some embodiments, a locking assembly may include a push head 21 abutting against an actuator 91 in a first direction, the push head 21 being separable from the actuator 91 radially perpendicular to the first direction to release the actuator 91 in the first direction. An anti-accidental contact assembly 30 may include a stop 32 being separable from the push head 21 or the actuator 91 radially to prevent the push head 21 from separating from the actuator 91 radially. The locking assembly is movable relative to the anti-accidental contact assembly 30 in the first direction such that the push head 21 is disengaged from the anti-accidental contact assembly 30 radially to allow it to recoil from each other, and the anti-accidental contact assembly 30 is at least partially exposed to abut against human skin in the first direction.
[0038] The locking assembly may include a hollow housing 10 and a locking member 20, the locking member 20 including a pusher 21 capable of lateral elastic movement. The locking member 20 may be movably connected to the housing 10 in a first direction. An actuation assembly 90 may be disposed radially inside the housing 10, wherein the drive mechanism may be a spring 92 disposed in the first direction, one end of the spring 92 abutting against the housing 10 in the first direction and the other end abutting against the actuation member 91. The spring 92 may be kept compressed within the housing 10, thereby providing a continuous thrust to the actuation member 91 in the first direction. An anti-accidental touch assembly 30 is exposed outside the housing 10, and may be disposed, for example, at the bottom of the locking member 20. The anti-accidental touch assembly 30 is movable relative to the locking member 20 in the first direction and releasably connected to the housing 10 in the first direction.
[0039] Specifically, in some embodiments, the housing 10 may include a locking positioning part, such as a housing locking block 11 protruding inward from the inner wall of the housing 10. The anti-accidental touch component 30 includes a limiting part 31 and a stop part 32, with the limiting part 31 releasably abutting against the housing locking block 11 along a first direction. One of the housing 10 and the anti-accidental touch component 30 may have a locking receiving groove 40. When relative movement occurs between the housing 10 and the locking member 20, and the anti-accidental touch component 30 is not driven relative to the housing 10, the stop part 32 may abut against the push head 21 radially perpendicular to the first direction. When the anti-accidental touch component 30 is driven relative to the housing 10 and moves to the unlocked position, the housing locking block 11 disengages from the limiting part 31, and the push head 21 is released and moves into the locking receiving groove 40. In some embodiments, the unlocked position may be the position of the anti-accidental touch component 30 relative to the housing 10 when it is necessary to release the lock on the actuator during relative movement between the anti-accidental touch component 30 and the housing 10.
[0040] In some embodiments, the housing 10 may be a protective housing for protecting the medical device and actuation component 90 to be applied, and may be made of engineering plastic materials such as polycarbonate. The housing 10 may be, for example, a hollow cylindrical shape, and its size may be configured for easy gripping or pressing by a user. Other auxiliary components and anti-accidental contact components for protecting the medical device to be applied may also be nested inside the housing 10 via connecting mechanisms. Furthermore, a spring assembly may be provided inside the housing 10 so that the housing can spring back after being pressed down due to accidental contact.
[0041] See Figures 4a to 4b , Figure 4a An exemplary cross-sectional view of an applicator according to some embodiments of this disclosure is shown; Figure 4b It shows Figure 4a An enlarged schematic diagram of part A. Further, in some embodiments, the inner wall of the housing 10 may be provided with a housing locking block 11 protruding radially inward. The upper end surface of the housing locking block 11 can be used to support and fix the anti-accidental touch component 30. In addition, two symmetrical housing locking blocks can be provided on the inner wall of the housing 10, namely a first housing locking block 111 and a second housing locking block 112. Taking the first housing locking block 111 as an example, its end also includes a first locking portion 111a, which can be used to form a releasable fixed connection with the limiting portion 31 of the anti-accidental touch component 30 in a first direction.
[0042] The locking member 20 may be provided with an elastic arm. For example, in some embodiments, the locking member 20 may also be made of engineering plastic materials such as polycarbonate. The locking member 20 may be generally cylindrical, and a U-shaped opening may be provided on its side wall, wherein the material at the center of the U-shaped opening can form the elastic arm. The distal end of the elastic arm along its extension direction may, for example, include a push top 21. The push top 21 consists of the elastic arm and a rib portion protruding horizontally from its end. The rib portion may include a first lateral rib 211, a second lateral rib 212, and a radial rib 213. The first lateral rib 211 and the second lateral rib 212 are symmetrically arranged at the end of the elastic arm with respect to the radial rib 213, and the radial rib 213 may be configured to extend and protrude radially outward toward the outside of the locking member 20.
[0043] When the housing is pressed due to user misoperation, when the top of the housing 10 is subjected to a downward pressing force in the first direction, the first locking part 111a inside the housing 10 pushes the limiting part 31 of the anti-accidental touch component 30 downward, and the anti-accidental touch component 30 is not subjected to external resistance at this time, so that the anti-accidental touch component 30 can move downward with the housing 10. When the downward pressing force disappears, the spring assembly inside the applicator will cause the housing 10 to drive the anti-accidental touch component 30 to bounce back to the initial position from bottom to top.
[0044] The anti-accidental touch component 30 may be a component nested inside the housing 10. The anti-accidental touch component 30 may include, for example, at least one anti-accidental touch element. In some embodiments, it may include two symmetrically arranged first anti-accidental touch elements 301 and a second anti-accidental touch element 302. Taking the first anti-accidental touch element 301 as an example, the first anti-accidental touch element 301 may include two generally elongated elastic elements, one of which may be provided with a limiting portion 31 and a stop portion 32. The limiting portion 31 may, for example, be formed by protruding laterally from the end of the extended portion of the elastic element perpendicular to its extension direction, while the stop portion 32 may, for example, be formed by protruding from the end away from the limiting portion 31.
[0045] It should be noted that the state in which the anti-accidental touch component 30 is driven relative to the housing 10 is characterized by: the housing 10 being pressed downward relative to the locking member 20, and the bottom of the anti-accidental touch component 30 being blocked and unable to extend from the bottom of the applicator. This state can be considered as the applicator being used normally, i.e., the lower end of the applicator is fully in contact with the target position on the human skin, and the housing is being pressed downward normally by the operator. The state in which the anti-accidental touch component 30 is not driven relative to the housing 10 is characterized by: the housing 10 being pressed downward, and the bottom of the anti-accidental touch component 30 being unobstructed, allowing it to move downward with the housing 10 and extend from the bottom of the applicator. This state can be considered as the applicator being accidentally touched, i.e., the bottom end of the applicator is not in contact with the target position on the human skin, and the user accidentally presses the housing.
[0046] The limiting part 31 may include, for example, a first positioning part 311 and a second positioning part 312. The first positioning part 311 includes a second locking part 311a, which can abut against the first locking part 111a of the first housing locking block 111 along a first direction via a contact ramp, so that the anti-accidental touch component 30 is releasably fixedly connected to the housing 10. When the anti-accidental touch component 30 is driven relative to the housing 10, since the first locking part 111a and the second locking part 311a contact and abut against each other via the ramp, the driving force along the first direction at the contact point is converted into a lateral thrust by the ramp, causing the elastic member of the first anti-accidental touch component 301 to be elastically bent and laterally retracted. This causes the first locking part 111a and the second locking part 311a to slide relative to each other and eventually separate along the first direction.
[0047] The first anti-accidental touch component 301 may include a first stop portion 321 and a second stop portion 322. When the anti-accidental touch component 30 is not driven relative to the housing 10, that is, when the housing 10 is pressed downward and the anti-accidental touch component 30 moves downward along with the housing 10, the first stop portion 321 descends radially outward from the first lateral rib 211 to a position parallel to the first lateral rib 211 radially, and abuts against the first lateral rib 211 radially inward. Similarly, the second stop portion 322 also descends radially outward from the second lateral rib 212 to a position parallel to the second lateral rib 212, and abuts against the second lateral rib 212 radially inward. It is understood that the structure and connection method of the elastic element on the other side of the first anti-accidental touch component 301 are the same as described above, and will not be elaborated further here.
[0048] In some embodiments, either the housing 10 or the anti-accidental contact assembly 30 may be provided with a locking receiving groove 40, which can be used to receive the radial protrusion 213 on the locking member 20 when the anti-accidental contact assembly 30 is driven relative to the housing 10, thereby releasing the medical device inside the applicator. It should be noted that when the anti-accidental contact assembly 30 is not triggered, the components disposed inside it, such as the actuator 91 of the actuator 90, will be subjected to the elastic pressure of the spring 92 in the axial direction downward. The elastic pressure can be transmitted to the elastic arm through the contact between the internal component and the protruding portion of the push top 21 on the inner side of the locking member, and the axial spring pressure is converted into the radially outward compressive pressure by means of the push slope 201 on the push top, while its radially outer side is in close contact with the inner side of the housing 10 and is resisted by the housing 10.
[0049] In embodiments with radial ribs 213, the radial ribs 213 are thus restricted, always remaining inside the housing 10 and not entering the locking receiving groove 40. When the radial ribs 213 are not aligned with the locking receiving groove 40, the inner wall of the housing 10 abuts against the push head 21 radially. When the housing 10 and the anti-accidental contact assembly 30 are driven synchronously relative to the locking member 20 until the radial ribs 213 are aligned with the locking receiving groove 40, the first lateral rib 211 and / or the second radial rib 212 abut against the stop portion 32 radially, preventing the push head 21 from moving radially into the locking receiving groove 40, thereby maintaining the lock on the actuator 91. When the housing 10 is moved to the unlocked position relative to the anti-accidental contact assembly 30 and the locking member 20, the housing locking block 11 disengages from the first positioning portion 311. Furthermore, the first stop portion 321 and the first lateral rib 211 avoid each other radially, and the second stop portion 322 and the second lateral rib 212 avoid each other radially. As a result, the radial rib 213 of the push top 21 can be released and moved radially outward into the locking receiving groove 40.
[0050] In some embodiments, the first positioning part 311 further includes a first slot 313, and the second positioning part 312 further includes a second slot 314. The first slot 313 can be configured as a recessed area formed by the first positioning part 311 toward the first housing locking block 111, and the second slot 314 can be configured as a recessed area formed by the second positioning part 312 toward the second housing locking block 112. When there is no relative movement between the anti-accidental touch component 30 and the housing 10, the top of the first locking part 111a of the housing locking block 11 abuts against the upper plane area of the first slot 313, and the bottom slope area of the first locking part 111a contacts the lower slope area of the first slot 313. Thus, the first housing locking block 111 is elastically releaseably connected to the first slot 313, and the second housing locking block 112 is elastically releaseably connected to the second slot 314. With this elastically release connection, the housing 10 can move the anti-accidental touch component 30 together with the housing 10 when the anti-accidental touch component 30 is not driven relative to the housing 10. When the anti-accidental touch component 30 is driven relative to the housing 10, the above connection method will make the housing locking block easily slide out of the slot by contact with the lower inclined surface of the slot, and the housing 10 will also disengage from the anti-accidental touch component 30 accordingly.
[0051] Understandably, by setting the connection between the anti-accidental touch component 30 and the housing 10 as an inclined surface, compared with the connection method of square ribs, there will no longer be a step change in force across the ribs, making the triggering of the anti-accidental touch component more convenient and smooth.
[0052] In some embodiments, the bottom of the elastic element of the anti-accidental touch component 30 is further provided with a contact surface 34. The bottom of the applicator has two receiving areas. When the anti-accidental touch mechanism is not triggered, the contact surface 34 at the bottom of the anti-accidental touch component 30 is fitted into and flush with the receiving areas or slightly recessed relative to the bottom end face of the locking member 20. The contact surface 34 can be fan-shaped, and the contact surfaces 34 of the two anti-accidental touch components 30 are symmetrically arranged at a certain spacing on the bottom of the applicator. In addition, those skilled in the art will understand that this disclosure does not specifically limit the total number and specific placement of the anti-accidental touch components. For example, only one anti-accidental touch component may be provided. The anti-accidental touch component may also be provided at other positions on the applicator. For example, in another feasible embodiment, an anti-accidental touch component may be added around the central area inside the applicator. In this way, the central area also has a contact surface 34, which cooperates with the anti-accidental touch components on both sides to increase the contact area and prevent the anti-accidental touch component from being difficult to trigger due to the user's soft skin or special angle.
[0053] In some embodiments, when the housing 10 is pressed and the anti-accidental touch component 30 is not in contact with the human body, the anti-accidental touch component 30 will extend along with the housing 10, and the extension distance corresponds to the distance the housing 10 moves when pressed. When the contact surface 34 of the anti-accidental 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 from the lower surface of the stop portion 32 to the contact surface 34 along 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 anti-accidental touch component 30 can be adjusted. For example, when applying a medical device to the human body, the lower end of the locking member 20 of the applicator and the contact surface 34 of the anti-accidental touch component 30 exposed from its lower end can abut against the human skin. At this time, if the housing 10 is pressed relative to the locking member 20, the contact surface 34 may press against the skin surface due to the push of the locking positioning portion of the housing 10, and because the human skin is elastic, the contact surface 34 may move a distance towards the human skin along the extension direction.
[0054] To prevent the anti-accidental contact component 30 from protruding due to skin pressure and causing the locking member to fail to unlock properly, for example, the distance from the lower surface of the stop portion 32 to the contact surface 34 along the first direction can be set to be slightly greater than the distance from the upper end face of the radially protruding portion of the push top 21 (e.g., the upper end face of the radial rib 213) to the bottom end of the locking member 20. In some embodiments, by setting the distance from the contact surface 34 to the lower surface of the stop portion 32 to be 1 mm greater than the distance from the upper end face of the radial rib 213 to the bottom end of the locking member 20, even if the contact surface 34 protrudes by 1 mm due to skin deformation when the applicator comes into contact with the human body, the stop portion 32 will not prevent the radial rib 213 from popping out in the radial direction.
[0055] In some embodiments, a downward-pointing check surface 35 is provided below the limiting portion 31 of the anti-accidental touch component 30. Taking the first housing locking block 111 as an example, when the applicator is used normally and the bottom of the anti-accidental touch component 30 is blocked from moving downward, the first housing locking block 111 will move downward relative to the anti-accidental touch component 30 in the vertical direction, causing the housing locking block 111 to disengage from its corresponding first slot 313. The housing 10 is no longer connected to the anti-accidental touch component 30. At this time, the first locking portion 111a of the first housing locking block 111 will descend to the lower side of the check surface 35 and will not spring back to the first slot 313 due to being blocked by the check surface 35 in the vertical direction. That is, the check surface 35 is used to prevent the locking portion of the housing locking block 11 from returning to its original slot when the anti-accidental touch component 30 is driven relative to the housing 10.
[0056] To facilitate understanding of the complete technical solution disclosed herein and its application effects, the following is in conjunction with Figures 4 to 5. Figure 6 The operation process of the applicator in some embodiments of this disclosure will be explained. Figure 5 An exemplary cross-sectional view of an applicator according to some embodiments of this disclosure is shown, wherein the housing of the applicator is being pressed down relative to a locking member, and an anti-accidental contact component is also being driven relative to the housing; Figure 6 An exemplary cross-sectional view of an applicator according to some embodiments of this disclosure is shown, wherein the housing of the applicator has been fully pressed down relative to the locking member, and the anti-accidental contact component has been driven relative to the housing.
[0057] In some embodiments, when the user needs to use the applicator, the lower end of the applicator's locking member 20 and the bottom contact surface of the anti-accidental touch component 30 can abut against the skin surface. When the user presses the housing, the bottom contact surface of the anti-accidental touch component 30 cannot move downward with the housing 10 due to the obstruction of the skin, and the second locking portion 311a of the first positioning portion 311 at the top of the anti-accidental touch component 30 slides relative to the first housing locking block 111 of the housing 10. At the same time, the first locking portion 111a of the first housing locking block 111 presses the first positioning portion 311 inward at the first slot 313, and the elastic member of the anti-accidental touch component 30 deforms inward under the action of the first locking portion 111a. Subsequently, the first locking portion 111a descends below the check surface 35 and is blocked by it. Simultaneously, the locking receiving groove 40 of the housing 10 moves to be radially aligned with the radial protrusion 213 of the locking member 20, so that the elastic arm of the locking member 20 is no longer obstructed by the anti-accidental contact component 30 or the housing 10. The radial protrusion 213 of the locking member 20 can then open outward and move into the locking receiving groove 40. Thus, the actuation component 90, which contains the medical device inside the applicator, is released, completing the needle insertion. Similarly, the structure on the other side of the anti-accidental contact component 30 performs the same movements described above.
[0058] Conversely, see Figure 7 , Figure 7An exemplary cross-sectional view of an applicator according to some embodiments of this disclosure is shown, wherein the applicator housing is being pressed down relative to a locking member, while the anti-accidental contact component is not driven relative to the housing. When the applicator is accidentally contacted, the housing 10 moves downward due to the pressing. Since the housing locking block 11 of the housing 10 is still connected to the limiting portion 31 of the anti-accidental contact component 30, the anti-accidental contact component 30 is also driven downward along with the housing 10 and extends out of the bottom of the housing 10. At the same time, the stop portion 32 of the anti-accidental contact component 30 descends to the lateral rib of the locking member 20. Specifically, the first stop portion 321 descends outside the first lateral rib 211 to a position flush with the first lateral rib 211 and abuts against the first lateral rib 211 radially, and the second stop portion 322 descends outside the second lateral rib 212 to a position flush with the second lateral rib 212 and abuts against the second lateral rib 212 radially. Because the locking member 20 is abutted by the stop part 32, the radial rib 213 cannot enter the locking receiving groove 40, and the actuator 90 containing the medical device inside the applicator will not be released. When the housing 10 is no longer pressed, it will drive the anti-accidental touch component 30 back to the initial position. At this point, the anti-accidental touch component 30 has completed one anti-accidental touch movement.
[0059] Reference Figure 8 and Figure 9 , Figure 8 An exemplary cross-sectional view of an applicator according to some embodiments of this disclosure is shown; Figure 9 It shows Figure 8 An enlarged schematic diagram of part B. In some embodiments, the anti-accidental touch component may also be arranged radially near the center. For example, the locking component may include an abutment 240 for abutting against the human body 300 and a housing 210 movable relative to the abutment 240. The anti-accidental touch component 230 is disposed axially movable inside the housing 210. A locking receiving groove 250 may be provided on the anti-accidental touch component 230. In this case, an actuation component may be disposed radially inside the housing 210, wherein the actuation component includes an actuator 220 and an axial spring 260 that pushes the actuator 220 downward toward the applicator in a first direction. The actuator 220 may include an inner sidewall radially close to the inside, and a push top may be provided on the inner sidewall. The push top may include, for example, an elastic arm 225. The elastic arm 225 may extend upward, and the distal end of its extension portion is provided with an actuation locking portion 225a protruding radially outward. A locking ramp 225b is provided on the lower side of the actuation locking portion 225a.
[0060] Meanwhile, a trigger member 215 extending downward along the axial direction of the inner top wall of the housing 210 can be provided on the inner side of the housing 210. The trigger member 215 can have a locking opening 215a, and the lower edge of the locking opening 215a can form a release slope 215b for engaging with the locking slope 225b on the lower side of the actuating locking part 225a. When the applicator is in its initial state, and the housing 210, the actuating member 220, and the anti-accidental contact assembly 230 are not moving relative to each other, the actuating locking part 225a can be at least partially accommodated inside the locking opening 215a, while the actuating locking part 225a contacts the release slope 215b on the trigger member 215 via its locking slope 225b. Since the actuating member 220 is subjected to a downward spring force from the axial spring 260, this force is transmitted along the first direction to the contact surface between the actuating locking part 225a and the release slope 215b, thereby causing the elastic arm 225 to be subjected to a radially inward pushing force.
[0061] The anti-accidental touch component 230 may be provided with a stop portion 232 extending in a first direction. The stop portion 232 may be located at the upper end of the portion of the anti-accidental touch component 230 extending in the first direction, and the locking receiving groove 250 may be located adjacent to the stop portion 232 on its lower side. The stop portion 232 may be located radially inner to the actuator 220, and the radially inner side of the stop portion 232 may be adjacent to the supporting inner wall 214 of the housing. Thus, when the elastic arm 225 is subjected to a radially inward pushing force, the stop portion 232 can radially abut and support the elastic arm 225, locking it in its original position. Since the stop portion 232 is held radially by the inner support wall 214 of the housing and the elastic arm 225 of the actuator 220, when the housing 210 and the actuator 220 move downwards simultaneously, the stop portion 232 also moves downwards simultaneously by means of the friction between itself and the housing 210 and the actuator 220, forming a releasable fixed connection with the actuator 220 in the first direction. At this time, the stop portion 232 also acts as a limiting portion. Meanwhile, the relative positions between the anti-accidental touch component 230, the housing 210, and the actuator 220 remain unchanged, and they move together relative to the abutment member 240 in the first direction. Those skilled in the art will understand that a housing locking block protruding radially from its inner wall can also be provided on the inner support wall 214 of the housing, and a limiting portion that cooperates with it can be provided on the anti-accidental touch component 230, so as to further enhance the reliability of the connection between the housing 210 and the anti-accidental touch component 230 by means of the releasable cooperation of the two in the first direction.
[0062] See also Figure 9 and Figure 10 ,exist Figure 9 During this process, the housing did not move relative to the contact member along the first direction, and the anti-accidental touch component was not activated. Figure 10 It shows Figure 9The diagram illustrates some of the changing states of the housing, where the housing is pressed against the abutment along a first direction, and the anti-accidental contact component is driven relative to the housing. When the housing 210 is pressed against the abutment 240 and the anti-accidental contact component 230 is not blocked along the first direction, the actuator 220 extends downward under the spring pressure of the axial spring 260 along the first direction, and the stop portion 232 radially abuts against the elastic arm 225, preventing the actuator 220 from unlocking from the housing. After the anti-accidental contact component 230 is driven to move relative to the housing 210, the radially inner side of the elastic arm 225 of the actuator 220 can elastically deform radially inward under the action of the axial spring 260 and the release ramp 215b of the housing 210, causing the elastic arm 225 to enter the locking receiving groove 250, thereby causing the locking part 225a to avoid the release ramp 215b of the housing along the first direction, releasing the lock between the actuator 220 and the housing 210 along the first direction.
[0063] Therefore, the anti-accidental touch component 230 can be configured to be more biased towards the central area inside the applicator, and its bottom contact surface is also closer to the inside of the applicator. This makes the anti-accidental touch component 230 extend closer to the center when held by the user. Even if the user accidentally blocks the edge of the applicator with their finger, it will not prevent the extension of the anti-accidental touch component, thereby further reducing the possibility of accidental triggering.
[0064] While numerous embodiments of this disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of this disclosure. It should be understood that various alternatives to the embodiments of this disclosure described herein may be employed in the practice of this disclosure. The appended claims are intended to define the scope of this disclosure and therefore cover equivalents or alternatives within the scope of these claims.
Claims
1. A mistaken touch prevention mechanism characterized by comprising: The application relates to a lock assembly, comprising: an execution component comprising an execution piece; a locking component comprising a pushing piece abutting against the execution piece in a first direction; an anti-misoperation component comprising a stopper; and the anti-misoperation component can be abutted by an external force in the first direction to be switched from a locked state to an unlocked state, in the locked state, the stopper can abut against the pushing piece or the execution piece in a radial direction perpendicular to the first direction to block the pushing piece and the execution piece from being separated in the radial direction; in the unlocked state, the pushing piece of the locking component can move in the first direction relative to the anti-misoperation component when the pushing piece is driven to move in the first direction, so that the pushing piece or the execution piece and the anti-misoperation component are radially displaced from each other, and the pushing piece and the execution piece can be separated in the radial direction.
2. The anti-mis-touch mechanism according to claim 1, wherein The locking component comprises a locking piece and a shell capable of moving relative to the locking piece in the first direction, the locking piece comprises the pushing piece, and the shell has a locking accommodating groove; when the shell and the anti-misoperation component are jointly moved relative to the locking piece until the locking accommodating groove is aligned with the pushing piece in the radial direction, the stopper abuts against the pushing piece in the radial direction; when the shell is driven relative to the anti-misoperation component so that the locking positioning part is disconnected from the limiting part, and the shell is moved relative to the locking piece until the locking accommodating groove is aligned with the pushing piece in the radial direction, the pushing piece can be elastically deformed in the radial direction and at least partially moved into the locking accommodating groove to release the execution piece.
3. The anti-mis-touch mechanism according to claim 2, wherein The anti-misoperation component comprises two stoppers, and the pushing piece further comprises two lateral ribs; when the anti-misoperation component is not abutted by an external force and the locking accommodating groove is aligned with the pushing piece, the two stoppers can respectively abut against the two lateral ribs in the radial direction.
4. The anti-mistouch structure according to claim 3, characterized in that, The pushing piece further comprises a radial rib extending outward in the radial direction, which is used for abutting against the inner wall of the shell when the pushing piece is not aligned with the locking accommodating groove, and the two lateral ribs are symmetrically arranged relative to the radial rib.
5. The anti-mistouch structure according to claim 3, wherein The locking piece is used for abutting against human skin, the distance between the bottom of the stopper and the bottom end of the anti-misoperation component in the first direction is greater than the distance between the upper surface of the lateral rib and the bottom end of the locking piece.
6. The anti-mistouch mechanism according to any one of claims 2 to 5, characterized in that, The shell comprises a locking positioning part, the limiting part is releasably connected with the locking positioning part in the first direction, the anti-misoperation component further comprises a first elastic piece capable of being elastically deformed, and the limiting part is arranged at the end of the first elastic piece; when the anti-misoperation component is abutted in the first direction and the shell is driven relative to the anti-misoperation component, the first elastic piece is elastically deformed laterally, so that the locking positioning part is disconnected from the limiting part.
7. The anti-mistouch mechanism according to claim 6, wherein The locking positioning part comprises a housing locking block protruding radially inward from the inner wall of the housing, the housing locking block comprising a first locking part, the limiting part comprising a second locking part elastically releasably engaged with the first locking part, at least one of the first locking part and the second locking part being formed as a slope at the abutting part thereof for enabling the second locking part to slide laterally along the slope until disengaging therefrom when the two are moved away from each other in a first direction.
8. The anti-mistouch mechanism according to claim 7, wherein The limiting part further comprises a check face arranged towards the bottom end of the mistaken-touch-preventing assembly, the check face being used to abut against the upper surface of the housing locking block when the housing is reversely moved after being pressed to disengage the second locking part from the first locking part.
9. The anti-mistouch mechanism of claim 1, wherein, The locking assembly comprises a housing comprising the push part, the mistaken-touch-preventing assembly having a locking accommodating slot, the execution member comprising an execution locking part capable of being elastically deformed in the radial direction, the stop part abutting against the execution locking part in the radial direction to block the execution locking part from being elastically deformed in the radial direction to move into the locking accommodating slot when the mistaken-touch-preventing assembly is not externally abutted, thereby preventing the execution member from being released; when the mistaken-touch-preventing assembly is externally abutted and the housing and the execution member are moved together relative to the mistaken-touch-preventing assembly until the locking accommodating slot and the execution locking part are aligned in the radial direction, the execution locking part can be deformed in the radial direction and moved into the locking accommodating slot to be separated from the push part.
10. The anti-mistouch mechanism according to claim 9, wherein The housing comprises a locking opening, the push part being arranged at the bottom of the locking opening, the execution locking part at least partially extending into the locking opening, at least one of the execution locking part and the push part being formed as a slope at the abutting part thereof to convert the pushing force of the driving mechanism in a first direction into a radial pushing force.
11. The anti-mistouch mechanism according to claim 10, wherein The housing further comprises a support inner wall extending in a first direction and a trigger, the locking opening being arranged at the trigger, the stop part being arranged in the radial direction between the execution locking part and the support inner wall to enable the stop part to be clamped in the radial direction by the execution locking part and the support inner wall.
12. An applicator characterized by, It comprises the mistaken-touch-preventing mechanism according to any one of claims 1-11.