Detection assembly

Abstract

The present disclosure discloses a detection assembly comprising: a transmitter assembly comprising a needle and a protective shell that are rotatably engageable relative to each other to lock relative to each other in a first direction; the applicator comprises a shell assembly and a shell cover locked with the shell assembly in the first direction, and the protective shell and the shell cover are at least connected in a one-way anti-rotation mode; and when the shell cover is screwed relative to the shell assembly, the protective shell is driven to horizontally rotate relative to the needle head so as to be disengaged, so that the protective shell can be separated from the needle head in the first direction. According to the detection assembly, the needle head and the protective shell are arranged on the shell assembly and the shell cover respectively, and the shell cover can be screwed and separated relative to the shell assembly, so that the needle head and the protective shell are separated by means of rotation and separation of the shell assembly and the shell cover, and sealing of the emitter assembly can be contacted simply and reliably.

Description

Technical Field

[0001] The present disclosure generally relates to the field of medical device technology. More specifically, the present disclosure relates to a detection assembly. Background Art

[0002] In the current field of medical testing equipment, a common testing component includes a transmitter and an applicator for applying the transmitter to the human body. Among them, the transmitter may include components such as a testing needle that need to be implanted in the human body. Such components need to be strictly sealed before use, and need to be able to be easily and safely unsealed during use. However, in current testing components, the operation for unsealing such a sealing structure is often complicated and has low stability.

[0003] In view of this, there is an urgent need to provide a detection component so that the seal of the transmitter component can be easily and reliably released. Summary of the invention

[0004] In order to at least solve one or more technical problems mentioned above, the present disclosure proposes a detection component solution in multiple aspects.

[0005] The present disclosure provides a detection assembly, comprising: a transmitter assembly, which includes a needle and a protective shell, the protective shell and the needle can be rotatably engaged with each other to be locked relative to each other along a first direction; an applicator, which includes a housing assembly and a shell cover locked with the housing assembly along the first direction, the protective shell and the shell cover are connected to each other in at least one-way anti-rotational manner; and when the shell cover is screwed relative to the housing assembly, the protective shell is driven to rotate relative to the needle to release the engagement, so that it can be separated from the needle along the first direction.

[0006] In some embodiments, the shell cover is at least partially unlocked relative to the housing assembly without displacement relative to the first direction to drive the protective shell to rotate horizontally so as to unlock it relative to the needle in the first direction.

[0007] In some embodiments, a ramp section is provided at the bottom of the shell assembly, and a positioning piece is provided at the axial end of the upper part of the shell cover, wherein when the shell cover is screwed through the ramp section, the ramp section pushes the positioning piece along the first direction to prompt the shell cover to be separated along the first direction after screwing.

[0008] In some embodiments, the shell cover also includes a lateral clamping hook, which includes a clamping hook portion protruding radially inward, and the radially inward end surface of the clamping hook portion is used to abut against the outer surface of the protective shell, and the positioning side surface of the clamping hook portion abuts against at least one positioning plane of the protective shell to limit it in the rotation direction.

[0009] In some embodiments, the positioning plane can also be set to be inclined toward the outer surface of the protective shell to form an angle space with the outer surface of the protective shell, and the positioning side surface of the clamp hook portion is formed to match the inclination angle of the positioning plane, so that the lateral corners of the clamp hook portion can be at least partially rotated and moved into the angle space, so that the positioning side surface is engaged with the positioning plane.

[0010] In some embodiments, after the shell cover drives the protective shell to rotate horizontally relative to the needle to release the engagement, the protective shell can fall into the shell cover along the first direction and separate from the housing assembly along the first direction together with the shell cover.

[0011] In some embodiments, at least one blocking block is provided on the needle, and at least one locking block is provided on the protective shell. After the needle and the protective shell are horizontally rotationally engaged, the blocking block and the locking block can abut along a first direction to prevent the needle and the protective shell from being relatively separated along the first direction.

[0012] In some embodiments, the stop block includes an upper abutment surface, and the locking piece includes a lower abutment surface corresponding to the upper abutment surface. The upper abutment surface and the lower abutment surface are formed to automatically fit each other in a centering manner, and the stop block and the locking block abut each other by virtue of the contact between the upper abutment surface and the lower abutment surface.

[0013] In some embodiments, the needle includes at least two stops disposed at angular intervals around the axis of the needle.

[0014] In some embodiments, the positioning member includes a locking groove extending in the radial direction, and the housing includes a locking flange protruding radially inward, and the locking flange cooperates with the locking groove to lock the housing cover in the first direction.

[0015] In some embodiments, the housing assembly includes a first shell and a second shell that are interlocked, and the ramp section is disposed at the bottom end of the first shell.

[0016] Through the detection assembly provided as above, the disclosed embodiment arranges the needle and the protective shell rotatably engaged with the needle on the outer shell assembly and the shell cover respectively, and enables the shell cover to be screwed and separated relative to the outer shell assembly, thereby separating the needle and the protective shell by means of the rotation and separation of the outer shell assembly and the shell cover, which makes it more convenient to unlock and separate the sealing part of the transmitter assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0018] Figure 1 An exemplary cross-sectional view of a detection assembly according to some embodiments of the present disclosure is shown;

[0019] Figure 2 An exemplary cross-sectional view of an emitter assembly of a detection assembly of some embodiments of the present disclosure is shown;

[0020] Figure 3 An exemplary exploded view of a transmitter assembly of a detection assembly of some embodiments of the present disclosure is shown;

[0021] Figure 4 An exemplary exploded view of a transmitter assembly of a detection assembly of some embodiments of the present disclosure is shown;

[0022] Figure 5 A three-dimensional schematic diagram of a needle of a detection assembly of some embodiments of the present disclosure is shown;

[0023] Figure 6 A three-dimensional schematic diagram showing a protective shell of a detection assembly according to some embodiments of the present disclosure is shown;

[0024] Figure 7 A three-dimensional schematic diagram of a housing assembly of a detection assembly according to some embodiments of the present disclosure is shown;

[0025] Figure 8 An exploded schematic diagram showing an applicator for detection of some embodiments of the present disclosure;

[0026] Fig. 9 Shows Figure 8 A partial enlarged schematic diagram of part A;

[0027] Fig.10 Shows Figure 8 A partial enlarged schematic diagram of part B;

[0028] Fig.11 An exemplary cross-sectional view of an applicator of a detection assembly of some embodiments of the present disclosure is shown;

[0029] Fig.12 An exemplary perspective view of a housing cover portion of a detection assembly according to some embodiments of the present disclosure is shown;

[0030] Fig.13 An exemplary exploded view of a detection assembly of some embodiments of the present disclosure is shown;

[0031] Fig.14 An exemplary perspective view of a detection assembly according to some embodiments of the present disclosure is shown;

[0032] Fig.15 An exemplary cross-sectional view of a detection assembly according to some embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of 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 scope of protection of the present disclosure.

[0034] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0035] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and claims, the singular forms of "a", "an", and "" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations.

[0036] As used in this specification and claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0037] The specific implementation of the present disclosure is described in detail below with reference to the accompanying drawings.

[0038] The disclosed embodiment provides a detection assembly, which separates the needle and the protective shell rotatably engaged with the needle on a shell assembly and a shell cover, respectively, and enables the shell cover to be screwed and separated relative to the shell assembly, thereby separating the needle from the protective shell by means of rotation and separation of the shell assembly and the shell cover, making it more convenient to unlock and separate the sealing part of the transmitter assembly.

[0039] For the sake of clarity and ease of understanding, in the following description of this article, the side of the transmitter that contacts the human body is generally regarded as the vertical lower side of the transmitter, the side of the transmitter that faces away from the human body is regarded as the vertical upper side, the direction parallel to the contact surface between the transmitter and the human body is regarded as the horizontal direction, and the direction of the detection needle toward the transmitter in the horizontal direction is regarded as radially inward, and the direction away from the center of the detection needle of the transmitter in the horizontal direction is regarded as radially outward. Unless there is a specific description restriction, the position description of other related components will also be based on this. The purpose of adopting the above description is only to provide a reference direction for describing the relative position relationship of each structure, and it is not to limit the actual arrangement of the structures of each embodiment in the present disclosure.

[0040] See also Figure 1 , Figure 1 An exemplary cross-sectional view of a detection assembly of some embodiments of the present disclosure is shown. In some embodiments of the present disclosure, the detection assembly includes an applicator and a transmitter assembly 100 disposed in the applicator, and the transmitter assembly 100 may include a transmitter 1 and an auxiliary needle assembly. The applicator may be a medical device for installing the transmitter 1 to a human body, which may include, for example, a housing assembly 90 and a shell cover 80 that are locked relative to each other in a first direction. The auxiliary needle assembly may include, for example, a needle 20 and a protective shell 30 that are rotationally engaged relative to each other and locked in a first direction.

[0041] In some embodiments, the needle 20 and the protective shell 30 can be arranged on both sides of the transmitter 1 along the first direction, and the protective shell 30 and the needle 20 can be rotatably engaged with each other to be locked relative to each other along the first direction. The applicator can include a housing assembly 90 and a shell cover 80 locked with the housing assembly 90 in the first direction, the needle 20 is connected to the housing assembly 90 in a rotationally-proof manner, and the protective shell 30 is connected to the shell cover 80 in a rotationally-proof manner at least in one direction. The shell cover 80 can be unlocked from the housing assembly 90 after being twisted relative to the housing assembly 90, and separated from the housing assembly 90 in the first direction to drive the protective shell 30 to rotate horizontally relative to the needle 20 to be disengaged, and separated from the needle 20 in the first direction.

[0042] See also Figure 2 and Figure 3 , Figure 2 An exemplary cross-sectional view of an emitter assembly of a detection assembly of some embodiments of the present disclosure is shown; Figure 3An exemplary exploded view of a transmitter assembly of a detection assembly of some embodiments of the present disclosure is shown. In some embodiments, the transmitter assembly 100 may include a transmitter 1. The transmitter 1 may, for example, be an electronic device for being installed on a human body and detecting physiological indicators of the human body, such as blood sugar. The transmitter 1 may, for example, include a housing 10 and a detection device 40, wherein the detection device 40 may, for example, be disposed inside the housing 10. The housing 10 may have a housing hole 110 that passes through the housing 10 in a vertical direction, and the detection device 40 may include a detection needle 41 that extends downward in a vertical direction and protrudes from the housing 10. The detection needle 41 may, for example, be used to extend into a human body to detect corresponding physiological indicators in the human body.

[0043] The needle 20 may include, for example, a puncture needle 23, which is used to assist the detection needle 41 in piercing the human body. The protective shell 30 is used to surround and seal the puncture needle 23 and the detection needle 41 to provide sealing protection thereto, thereby isolating the puncture needle 23 and the detection needle 41 from direct contact with the external environment and avoiding the risk of infection during use. Through sealing protection, the sterility of the puncture needle 23 and the detection needle 41 before use is ensured, thereby improving the safety of user use. The needle 20 and the protective shell 30 can be engaged in the housing channel 110 of the housing 10, and can be horizontally rotated relative to each other along the first rotation direction to a locked position, so that the two are locked relative to each other along the first direction. The needle 20 and the protective shell 30 can also be horizontally rotated against the first rotation direction to an unlocked position, at which time the protective shell 30 and the needle 20 are unlocked, and thereafter can be separated from the needle 20 along the first direction with the shell cover 80.

[0044] See also Figure 4 , Figure 4 An exemplary exploded view of the transmitter assembly of the detection assembly of some embodiments of the present disclosure is shown. Specifically, in some embodiments, the housing 10 may be, for example, roughly in the shape of a flat sheet. A detection device 40 may be fixedly arranged inside the housing 10, and the detection device 40 may include a detection needle 41 for implanting in the human body to contact the object to be detected and a control circuit board 43 for processing and sending the detection parameters. One end of the detection needle 41 may be electrically connected to the control circuit board 43, and the other end may extend into the housing channel 110, and extend toward the lower side of the transmitter 1 in the vertical direction, and protrude from the lower surface of the housing 10. In some embodiments, in order to stably fix the transmitter 1 to the surface of the human body, an adhesive member 15 is also fixedly arranged on the lower side of the housing 10. The adhesive member 15 may be, for example, roughly in the shape of a sheet, one side of which is fixedly connected to the lower side of the housing 10, and the other side may be provided with a sticky substance such as glue, for use in adhering and fixing with the skin of the human body.

[0045] In some embodiments, the housing 10 may include an upper housing 11 and a lower housing 13 that are interlocked, and an auxiliary stopper 12 disposed between the upper housing 11 and the lower housing 13, and the three together enclose a component cavity for accommodating the detection device 40. Specifically, in some embodiments, the upper housing 11, the lower housing 13, and the auxiliary stopper 12 are all roughly flat, and all three are provided with openings that pass through in the vertical direction. The openings of the upper housing 11, the auxiliary stopper 12, and the lower housing 13 are sequentially connected along the first direction, thereby forming a housing channel 110 of the housing 10. The side of the lower shell 13 adjacent to the opening may be provided with a lower flange 137 that protrudes upward and surrounds the opening, and the part of the upper shell 11 adjacent to the opening may be provided with an upper flange 117 that protrudes downward and surrounds the opening, and the bottom surface of the auxiliary stopper 12 abuts against the upper end surface of the lower flange 137, and the upper surface of the auxiliary stopper 12 and the lower end surface of the upper flange 117 are arranged in a vertical direction, and are fixedly connected in the space between the two by means of glue injection, clamping, etc. At the same time, the peripheral edge portions of the upper shell 11 and the lower shell 13 can also protrude relative to each other and be sealed by means of glue injection, etc. Thus, the auxiliary stopper 12 can support the upper shell 11 in the vertical direction, prevent deformation, damage and other problems caused by the direct action of external pressing force, and thus protect the internal electronic devices from being squeezed and damaged. And the upper shell 11, the lower shell 13 and the auxiliary positioning member can seal and isolate the inner cavity of the component from the outside.

[0046] See also Figure 5 , Figure 5 A three-dimensional schematic diagram of the needle of the transmitter assembly of the detection assembly of some embodiments of the present disclosure is shown. The needle 20 of the needle-assisting assembly may include, for example, a puncture needle 23 and a needle seat 21 for fixing the puncture needle 23. The puncture needle 23 may be made of, for example, medical grade stainless steel or other metal materials. The puncture needle 23 may include a needle body 233 that is roughly in the shape of an elongated strip, and one end of the needle body 233 may be provided with a sharp needle tip 231, and the other end may be provided with a needle tail 236 for connecting the needle body 233 to the needle seat 21. The needle body 233 may also be provided with a needle-accommodating groove 230 that is arranged through in the direction of the needle tip 231. The cross-sectional shape, cross-sectional size and extension length of the needle-accommodating groove 230 may be matched with the cross-sectional shape, cross-sectional size and extension length of the detection needle 41 of the transmitter 1, so as to accommodate the portion of the detection needle 41 extending in the vertical direction in the needle-accommodating groove 230.

[0047] In some embodiments, the needle-receiving groove 230 may have a roughly U-shaped cross-section, so that the detection needle 41 can be placed in the needle-receiving groove 230 through the opening of the needle-receiving groove 230. It can be understood by those skilled in the art that the present disclosure does not limit the specific shape, cross-sectional size and extension length of the needle body 233 and the needle-receiving groove 230. For example, the needle-receiving groove 230 can be set to have other shapes such as V-shape or semicircle, or the size of the needle-receiving groove can be set to be larger than the detection needle to improve the convenience of assembly, or it can be set to be longer than the detection needle to ensure that the detection needle does not touch the human skin before puncture, etc. It is based on its ability to surround the detection needle 41 and assist the detection needle 41 to complete the insertion. The needle seat 21 can be made of engineering plastics such as polycarbonate, which can be connected to the needle tail 236 of the puncture needle 23, and can be made by injection molding with the needle body 233.

[0048] A needle guide groove 214 for accommodating the detection needle 41 may also be provided on the needle seat 21. The needle guide groove 214 may be formed by being recessed on the needle seat in a direction and angle consistent with the needle receiving groove 230. The needle body 233 may be partially exposed in the needle guide groove 214, for example, the needle body 233 may partially cover the bottom and side wall of the needle receiving groove 230, so that the needle receiving groove 230 is exposed from the needle guide groove 214. The radial extension direction of the needle guide groove 214 may be at a certain angle to the radial side surface of the positioning section 213 for positioning. Thus, a larger rotational fit angle may be formed between the upper abutment surface 215 and the lower abutment surface 32 to increase the fit strength between the needle head 20 and the protective shell 30. At the same time, the needle guide groove 214 may have a larger radial depth in the needle seat 21, so that the material of the outer periphery of the needle body 233 combined with the needle body 233 is thicker, thereby improving the connection strength between the needle body 233 and the needle seat 21. The setting angle of the needle guide slot 214 can be set corresponding to the extension angle of the detection needle 41, so that the detection needle 41 can be radially extended into the needle guide slot 214. In some embodiments, the two inner side walls of the needle guide slot 214 can also be set at a certain inclination angle to expand the opening toward the detection needle 41, provide guidance for the insertion of the detection needle 41, and facilitate the positioning of the detection needle 41 relative to the needle receiving slot 214 when installed.

[0049] See also Figure 6 , Figure 6A three-dimensional schematic diagram of a protective shell assembly of a transmitter assembly of a detection assembly of some embodiments of the present disclosure is shown. In some embodiments, the protective shell assembly may include a protective shell 30 and a first seal 51 fixedly disposed on the upper side of the protective shell 30. The needle 20 may have a first joint, and the protective shell 30 may have a second joint, and the first joint and the second joint can be engaged in the housing channel 110. The first joint may, for example, include a stop block 211 formed on the lower side of the needle seat 21 of the needle 20, and the stop block 211 may be formed by a roughly cylindrical joint body 217 protruding radially outward. The second joint may, for example, include a locking block 31 formed on the upper side of the protective shell 30, and the locking block 31 may extend upward and further protrude radially inward. The stop block 211 of the first joint and the locking block 31 of the second joint may be aligned in the vertical direction, and the first joint is also provided with an air avoidance position for the locking block 31 of the second joint to engage. For example, in some embodiments, the first joint includes at least one stopper block 211 protruding radially outward from the side of the joint body 217, and the upper side of the stopper block 211 has an upper abutment surface 215 facing upward in the vertical direction. The second joint may include a locking block 31 protruding vertically upward from the upper end surface of the protective shell 30, and the locking block 31 protrudes upward and tilts radially inward to form a lower abutment surface 32 facing downward in the vertical direction. In some embodiments, the upper abutment surface 215 and the lower abutment surface 32 may be two conical surfaces that match each other in shape.

[0050] The cross-sectional size and shape of the first joint and the second joint in the horizontal direction can be adapted to the opening size of the shell channel 110, so that the first joint and the second joint can at least partially extend into the shell channel 110. By setting the cross-sectional area and relative arrangement position of the stop block 211 and the locking block 31, when the first joint and the second joint both extend into the shell channel 110, the stop block 211 and the locking block 31 can avoid each other in the vertical direction. Thereby, the first joint and the second joint can continue to move toward each other in the vertical direction until they are partially intertwined. Further, the first joint and the second joint can rotate relative to each other until the upper abutting surface 215 of the stop block 211 and the lower abutting surface 32 of the locking block 31 can abut against each other in the vertical direction.

[0051] At the same time, an upper push portion 219 may be provided on the lower side of the needle seat 21, and a lower push portion 309 may be provided on the upper side of the protective shell 30. The upper push portion 219 is used to push the first connector downward toward the housing 10 in the vertical direction after the first connector is inserted into the housing hole 110. Similarly, the lower push portion 309 is used to push the second connector upward toward the housing 10 in the vertical direction after the second connector is inserted into the housing hole 110. After the first connector and the second connector are respectively inserted into the housing hole 110 from both sides of the housing 10, the first connector is engaged with the second connector and can be relatively rotated from an unlocked position to a locked position.

[0052] Specifically, when the blocking block 211 of the first connector and the locking block 31 of the second connector avoid each other in the vertical direction, this position is the unlocking position, and the first connector and the second connector can be relatively separated in the vertical direction in the shell channel 110. When the first connector and the second connector rotate relative to each other in the shell channel 110 until the upper abutting surface 215 of the blocking block 211 can abut against the lower abutting surface 32 of the locking block 31, this position is the locking position, and at this time, the relative separation of the first connector and the second connector in the shell channel 110 along the vertical direction is blocked by each other. At the same time, the upper abutting portion 219 of the needle seat 21 and the lower abutting portion 309 of the protective shell 30 push toward the shell 10 from the upper and lower directions respectively, so that the needle 20 and the protective shell 30 cannot move relative to the shell 10 in the vertical direction, thereby realizing the locking of the entire transmitter assembly in the vertical direction.

[0053] See also Figure 5 In some embodiments, the first connector of the needle seat 21 may include two blocking blocks 211, and the second connector of the protective shell 30 may include two locking blocks 31 accordingly, wherein the two blocking blocks 211 may be symmetrically arranged on both sides of the connector body 217 with respect to the vertical direction, for example. Thus, when in the locked position, the connecting force between the blocking blocks 211 and the locking blocks 31 in the vertical direction can be evenly distributed on the connector body 217, avoiding tilting due to unbalanced force when holding or releasing the protective shell 30. Those skilled in the art will appreciate that, although an embodiment in which two stop blocks 211 and two locking blocks 31 are provided is described above, the present disclosure does not impose any limitation on the number and shape of the locking blocks 31 and the stop blocks 211. For example, only one stop block 211 and a corresponding locking block 31 may be provided, or more stop blocks 211 and corresponding locking blocks 31 may be provided, or only one stop block 211 may be provided, and multiple locking blocks 31 may be simultaneously engaged and locked with the stop block 211, etc., as long as the first joint and the second joint can be relatively locked or released in the vertical direction by means of rotation.

[0054] See also Figure 7 , Figure 7A three-dimensional schematic diagram of the bottom of the shell of the transmitter assembly of the detection assembly of some embodiments of the present disclosure is shown. In some embodiments, the upper side of the locking block 31 is also provided with an inclined lower guide surface 33 that can be roughly in the shape of a partial conical surface, and the inner side of the housing channel 110 is provided with a guide portion protruding radially inward, and the lower side of the guide portion is provided with an upper guide surface 133 corresponding to the lower guide surface 33. The upper guide surface 133 and the lower guide surface 33 are used to guide the second joint when the first joint and the second joint are engaged and rotated relative to each other. When the protective shell 30 is installed, the second joint is adjusted in the direction of the center of the circle of the two guide surfaces by means of the shape matching between the upper guide surface 133 and the lower guide surface 33 as it moves in the vertical direction. Thereby, the occurrence of the situation that the protective shell 30 and the needle 20 cannot be aligned when the protective shell 30 is installed is reduced. When the second joint rotates from the unlocked position to the locked position or from the locked position to the unlocked position, the contact between the upper guide surface 133 and the lower guide surface 33 can ensure that the second joint will not be radially offset or tilted relative to the transmitter 1.

[0055] In some embodiments, the upper part of the protective shell 30 also includes a guide portion, and a positioning portion for cooperating with the guide portion may be provided on the shell 10, and the guide portion may be used to provide a pressing force for relative pressing of the first joint and the second joint when the first joint and the second joint rotate relative to each other. Specifically, in some embodiments, the guide portion may include a first guide block 34 with a lower height protruding from the upper end surface of the protective shell 30 to the upper side, and the positioning portion may include a first positioning block 132 extending from the shell 10 toward the first guide block 34. The first positioning block 132 may be arranged on the rotational movement path of the first guide block 34, and both or one of the two may have a guiding slope 35 arranged at the end. Thus, when the second joint rotates relative to the shell 10, the first positioning block 132 may contact the first guide block 34 and move to the upper surface of the first guide block 34 with the help of the guiding slope 35. The first positioning block 132 is enabled to press against the guiding surface toward the bottom of the shell 10, thereby causing the protective shell 30 to be subjected to downward pressure. The downward pressure will be transmitted to the contact portion between the locking block 31 and the blocking block 211 , increasing the contact pressure between the upper abutting surface 215 of the blocking block 211 and the lower abutting surface 32 of the locking block 31 .

[0056] At the same time, when the locking block 31 is engaged with the stop block 211 and is in the locked position, the upper guide surface 133 can also limit the radial deformation of the lower guide surface 33 by means of the contact between it and the lower guide surface 33. That is, when there is contact pressure in the axial direction between the locking block 31 and the stop block 211, the contact pressure may act on the locking block 31 to cause radial elastic deformation, and the radial elastic deformation of the locking block 31 will cause the lower guide surface 33 to abut against the upper guide surface 133 in the radial direction. In this way, the relative deflection or loosening between the lower guide surface 33 and the upper guide surface 133 due to the elastic deformation of the locking block 31 can be prevented.

[0057] It is understood by those skilled in the art that, although the above describes an embodiment in which the upper guide surface 133 is set to at least partially be a conical surface, and the lower guide surface 33 is set to a shape matching therewith, in other embodiments, the upper guide surface may also be set to other shapes that can produce an automatic centering effect. For example, a partial spherical surface, an arc surface, or a plurality of inclined sub-guide surfaces that are opposite to each other, and the lower guide surface 33 is formed to match therewith, so that the upper guide surface 133 and the lower guide surface 33 form an automatic centering fit. In some embodiments, at least one of the upper abutting surface and the lower abutting surface may be formed as a rotating curved surface, and the two can form a sliding fit with each other by means of the rotating curved surface. For example, one of the two may be formed as a conical surface, and the other may be formed as a corresponding conical surface, or may be formed as other rotating curved surfaces such as a spherical surface, as long as the sliding fit between the two can be satisfied, thereby ensuring that the two maintain stable contact during relative rotation to prevent the occurrence of jamming or jumping.

[0058] In some embodiments, the first guide block 34 and the first positioning block 132 can form a circumferential stop mechanism. For example, when the second joint rotates relative to the housing 10 until the first positioning block 132 contacts the end face of the guide block or the guide slope 35, it will be subject to a certain resistance in the rotation direction. Only when the driving force driving its rotation can drive the locking block 31 to undergo elastic deformation in the vertical direction at a distance greater than the height difference between the first positioning block 132 and the first guide block 34, can it move across the end face or the guide slope 35 to the upper surface of the guide block. Thus, the first guide block 34 can form a circumferential positioning with the first positioning block 132 in the circumferential direction, and by setting one end face of the first guide block 34 at a corresponding position when the rotation is completed, the second joint can be prevented from rotating in the opposite direction relative to the housing 10.

[0059] Those skilled in the art can understand that, in some embodiments, when the upper abutting surface 215 and the lower abutting surface 32 are mutually fitting conical surfaces, setting the cooperation of the guide portion and the positioning portion to provide additional fitting pressure in the vertical direction can also have additional effects. That is, when the first joint and the second joint rotate relative to each other, the upper abutting surface 215 and the lower abutting surface 32 produce an automatic centering effect due to the relative thrust they receive, and the cooperation of the two conical surfaces. As a result, when the protective shell 30 is screwed to install or unlocked to remove, the protective shell 30 can maintain its relative angle with the first needle 20 unchanged by means of the two mutually fitting conical surfaces, thereby greatly reducing the occurrence of the protective shell 30 being skewed or even misplaced and touching the puncture needle 23 when screwing.

[0060] In addition, setting the upper abutting surface 215 and the lower abutting surface 32 to have mutually matching conical surfaces can also increase the contact area between the first connector and the second connector. At the same time, due to the interaction between the two conical surfaces, the first connector and the second connector, when in the locked position, not only support each other in the vertical direction, but also support each other in the radial direction, thereby further improving the connection strength between the first connector and the second connector. Furthermore, in the case where the upper guide surface 133 is also set as a conical surface, the upper guide surface 133 can also guide the first connector 215 when it is pulled out upward in the vertical direction, that is, when it is pulled out, even if the first connector is deflected relative to the shell due to the incorrect pulling direction, the first connector can be guided back to the vertical direction by means of the contact between the conical surface and the conical surface of the upper abutting surface 215, further preventing the puncture needle from getting stuck or tilted when it is pulled out.

[0061] In some embodiments, the guide portion may further include a second guide block 37, and a second positioning block 131 spaced apart from the first positioning block 132 may be provided on the housing 10. The second guide block 37 may be spaced apart from the first guide block 34, and a guide positioning groove 38 is defined between the two, and the size and shape of the guide positioning groove 38 may match the second positioning block 131. Thus, when the second joint is rotated to align the guide positioning groove 38 with the second positioning block 131, it may be kept in the pre-locking position by the guide positioning groove 38, and will not easily continue to rotate or reverse back. In addition, during assembly, when the second joint is rotated to align the guide positioning groove 38 with the second positioning block, the assembler will feel the vibration of the second positioning block 131 and the guide positioning groove 38 at the moment of engagement, to remind the assembler that it has been installed in place. By adjusting the position of the guide positioning groove 38, the pre-locking angle of the second joint relative to the housing 10 may be adjusted in the rotation direction of the second joint accordingly. In some embodiments, the pre-locking position may correspond to the locking position of the second joint relative to the first joint. When the second connector rotates to the pre-locking position relative to the housing 10, it also rotates to the locking position relative to the first connector inserted into the housing hole 110. Therefore, the guide positioning groove 38 also provides a reminder for screwing in place during installation, reducing the possibility of damage to the second connector caused by excessive rotation of the protective shell 30 during installation.

[0062] In some embodiments, the first guide block 34 and the second guide block 37 of the guide portion can be portions disposed on the upper end surface of the second joint near the outer peripheral edge. It can be understood by those skilled in the art that the present disclosure does not limit the specific structure of the guide portion, for example, it can include more guide blocks and positioning blocks, or the guide portion can include a continuous curved surface formed on the upper end surface of the second joint, or the guide portion can be configured as a continuous protrusion protruding radially outward from the radial side wall of the second joint, etc. It is only necessary to enable it to abut against the positioning portion on the housing 10 in the vertical direction to provide thrust, and / or form a pre-locking and / or non-return in the rotation direction.

[0063] In some embodiments, the housing 10 may further include a first circumferential limiting mechanism, which can limit the first joint along its rotation direction to limit the rotation angle of the first joint relative to the housing 10. Specifically, the first circumferential limiting mechanism of the housing 10 may be a circumferential limiting hole (e.g., 136, 121). The circumferential limiting hole (e.g., 136, 121) may be, for example, disposed at the center of the housing 10, which is connected to the housing channel 110 in the vertical direction. A limiting segment 213 may be disposed on the first joint, and the shape of the limiting segment 213 may form a shape match with the cross-sectional shape of the circumferential limiting hole (e.g., 136, 121), so that after the first joint is inserted into the housing channel 110, the circumferential limiting hole (e.g., 136, 121) engages with the limiting segment 213 and limits it, thereby preventing the first joint from rotating relative to the housing 10. In some embodiments, the cross-sectional shape of the circumferential limiting hole (e.g., 136, 121) can be formed as a roughly rounded rectangle, and the cross-sectional shape of the limiting section 213 on the first joint can also be formed as a rounded rectangle. It is understandable that the circumferential limiting hole (e.g., 136, 121) and the limiting section 213 can also be set to have other cross-sectional shapes, such as a triangle or a rhombus. In some other embodiments, the circumferential limiting hole (e.g., 136, 121) may not form a shape match with the limiting section 213, for example, the circumferential limiting hole (e.g., 136, 121) is set to have a long groove, and the limiting section 213 is provided with abutting surfaces that abut against the two sides of the long groove. For example, the circumferential limiting hole (e.g., 136, 121) and the limiting section 213 can be set to be able to rotate relative to a certain angle.

[0064] In some embodiments, the opening of the upper shell 11 can be formed as a circumferential limit hole 136 for circumferentially limiting the first joint. Similarly, the opening of the auxiliary limit member 12 can be formed as a circumferential limit hole 121 for circumferentially limiting the first joint. The width of the circumferential limit hole of the auxiliary limit member 12 and the upper shell 11 can be greater than the width of the first joint, so that the first joint will not be stuck or move smoothly due to slight tilt or misalignment when withdrawing from the circumferential limit hole. Furthermore, the side edges of the circumferential limit holes of the auxiliary limit member 12 and the upper shell 11 can also be provided with avoidance slopes 121a and 136a inclined toward the direction of the first joint, so as to facilitate the first joint to be pulled out relative to the shell, so as to prevent the peripheral surface of the shell channel 110 from contacting the stop block 211 in the vertical direction when the stop block 211 is moved out of the shell channel 110, thereby enhancing the smoothness of the needle pulling action.

[0065] In some embodiments, the housing 10 may further include a second circumferential limiting mechanism, which is used to abut against the protective shell 30 along the rotation direction of the protective shell 30 to limit its rotation angle. For example, the portion of the housing 10 adjacent to the housing channel 110 may be provided with a circumferential limiting block protruding radially toward the housing channel 110, and the circumferential limiting block may be provided, for example, on the path of the rotational movement of the locking block 31 of the second joint, thereby limiting the rotation angle of the second joint relative to the housing 10. In some embodiments, the first positioning block 132 may be used as a circumferential limiting block at the same time, and the second circumferential limiting mechanism may include two circumferential limiting blocks, each of which has a first limiting side surface 134 for abutting against the side surface of the locking block 31. The position of the first limiting side surface 134 may be set corresponding to the first circumferential limiting mechanism, for example, so that when the second joint rotates to the locking position relative to the first joint, the first limiting side surface 134 just abuts against the side surface of the locking block 31. In this way, excessive screwing can be prevented when installing the locking protective shell 30. Similarly, each circumferential limiting block may include a second limiting side surface 135, and the second limiting side surface 135 is used to abut against the other side surface of the locking block 31 when the locking block 31 rotates to the unlocking position to prevent the locking block 31 from over-rotating.

[0066] See also Figure 8 and Fig.12 , Figure 8 An exploded schematic diagram showing an applicator for detection of some embodiments of the present disclosure; Fig.12 An exemplary stereogram of the shell cover portion of the detection assembly of some embodiments of the present disclosure is shown. The lower portion of the housing assembly 90 may be provided with a ramp section 103 protruding in the first direction toward the shell cover, and the axial end of the upper portion of the shell cover 80 is provided with a positioning member 104 protruding upward, wherein when the shell cover 80 is screwed through the ramp section 103, the ramp section 103 pushes the positioning member 104 in the first direction to prompt the shell cover 80 to be separated in the first direction after screwing.

[0067] Specifically, in some embodiments, the shell assembly 90 may include, for example, a first shell 120 and a second shell 130, wherein the first shell 120 and the second shell 130 can both be formed as a hollow structure, and the first shell 120 and the second shell 130 can be nested with each other along a first direction to jointly form a shell 91, and the first shell 120 and the second shell 130 can both be formed into a roughly cylindrical shape.

[0068] In some embodiments, the ramp section 103 is formed to protrude along the lower end surface of the first shell 120 toward the shell cover 80. For example, when the shell cover 80 is buckled with the outer shell 91 along the first direction, the lower end of the first shell 120 can be located radially inward of the second shell 130, and the ramp section 103 can be pressed downward along the first direction against the positioning member 104 provided on the shell cover 80 when the shell cover 80 rotates relative to the outer shell 91.

[0069] According to such a configuration, when the user screws the housing cover 80 to drive the positioning member 104 to move in the screwing direction, the upper surface of the positioning member 104 contacts the axial end surface of the ramp section 103, and the positioning member 104 abuts against the ramp section 103 along the inclined end surface of the ramp section 103 and slides relatively. During the relative sliding process of the two, the height of the ramp section 103 in the axial direction gradually increases, thereby gradually pushing the positioning member 104 downward in the first direction, causing the positioning member 104 to be pushed downward in the first direction, thereby achieving the purpose of prompting the user to separate the housing cover 80 in the first direction.

[0070] In some embodiments, by setting the relative positions of the slope section 103 and the positioning member 104, when the shell cover 80 is in the open position, the highest point of the slope section 103 is aligned with the positioning member 104. According to such a setting, during the process of the positioning member 104 being screwed to the edge side of the open position, the resisting force of the slope section 103 along the first direction gradually reaches the maximum, so that the user can clearly feel that the positioning member 103 protrudes along the first direction, so as to ensure that the prompt of separating the shell cover 80 along the first direction after screwing is received by the user.

[0071] In some embodiments, the open position may be a position where the housing cover 80 can be screwed to a maximum opening, and the housing cover 80 cannot be screwed forward any further in the open position.

[0072] In some embodiments of the present disclosure, see Fig. 9 , Fig. 9 Shows Figure 8 A partial enlarged schematic diagram of part A in the middle. The ramp section 103 is provided with a downwardly inclined protruding flange on the axial outer side. According to such a configuration, when the shell cover 80 is in the open position, the downwardly inclined protruding flange of the ramp section 103 abuts against the upper end surface of the positioning member 104 along the first direction, causing the positioning member 104 to obviously protrude along the first direction, so that the user can clearly feel that the positioning member 103 protrudes along the first direction, so as to ensure that the prompt of separating the shell cover 80 along the first direction after screwing is received by the user.

[0073] like Figure 8 and Fig.12As shown in , in some embodiments of the present disclosure, the positioning member 104 includes a locking groove 105 extending in a radial direction. The housing assembly 90 includes a locking flange 106 protruding radially inward, and the locking flange 106 cooperates with the locking groove 105 to lock the shell cover 80 in a first direction. Specifically, the positioning member 104 can be configured to protrude in the direction of the shell cover 80 toward the housing assembly 90 along the axial direction of the shell cover 80, and it can be configured to be disposed at a radially outer position of the shell cover 80. And on the radial outer side of the positioning member 104, a locking groove 105 that is radially recessed into the outer side of the positioning member 104 can be provided. Correspondingly, at the lower end surface of the second housing 130 of the housing assembly 90, a locking flange 106 protruding radially inward can be provided, and the locking flange 106 can be configured to cooperate with the locking groove 105, so that after the shell cover 80 and the housing assembly 90 are buckled, the locking flange 106 can be at least partially accommodated in the locking groove 105. When the shell cover 80 is locked relative to the housing assembly 90 , the inner top wall of the locking groove 105 , for example, can abut against the upper surface of the locking flange 106 , thereby the shell cover 80 can be locked relative to the housing assembly 90 along the first direction.

[0074] In some embodiments of the present disclosure, Figure 8 As shown in , the locking flange 106 also has a release opening 107 that penetrates in the axial direction, and the shape and position of the release opening 107 match the shape and position of the positioning member 104, so that the positioning member 104 can extend into the housing assembly 90 from the release opening 107 along a first direction, and further rotate relative to the housing assembly 90, so that the locking groove 105 of the positioning member 104 rotates in the relative rotation direction of the two to be sleeved on the locking flange 106. In this way, the housing cover 80 can be locked relative to the housing assembly 90 in a simple manner.

[0075] In some embodiments, the release opening 107 can be located at the lower end of the slope section 103. When the shell cover 80 is screwed, the positioning member 104 will move synchronously on the locking flange 106. When the positioning member 104 moves to the release opening 107, the slope section 103 will abut against the upper end surface of the positioning member 104 along the first direction, and the positioning member 104 is pushed downward from the release opening 107 along the first direction, so as to further prompt the shell cover 80 to be separated along the first direction after screwing.

[0076] In some embodiments, the height of the slope section 103 can be set so that the positioning member 104 can obviously protrude downward along the first direction when it contacts the slope section 103, so as to prompt the shell cover 80 to be separated along the first direction after being screwed.

[0077] In some embodiments of the present disclosure, see Fig.10 , Fig.10 Shows Figure 8The partially enlarged schematic diagram of the B part in FIG. The locking flange 106 may include a plurality of sections arranged in sequence along the rotation direction of the positioning member 104 and the locking flange 106, wherein the plurality of sections may have different thicknesses along the first direction. For example, the locking flange 106 may include a limiting section 108 formed by thickening upward along the first direction, and the limiting section 108 may include a non-return stop surface 109 provided on one side of the limiting section 108 along the rotation direction of the positioning member 104 and the locking flange 106. Specifically, in some embodiments, the limiting section 108 may be formed by the upper side surface of the locking flange 106 being thickened upward, and its non-return stop surface 109 may be provided, for example, on the side of the limiting section 108 away from the release port 107 along the above-mentioned rotation direction. Thus, after the positioning member 104 moves along the locking flange 106 to cross the limiting section 108, the non-return stop surface 109 may be used to fix the positioning member 104 to prevent it from moving out in the reverse direction. Thus, the housing assembly 90 and the housing cover 80 can be locked in the rotation direction to prevent the positioning member 104 from sliding toward the release opening 107 , causing the housing cover 80 to loosen or separate from the housing assembly 90 .

[0078] In addition, in some embodiments, the check surface 109 of the limit section 108 and the side surface opposite to the check surface 109 can be set as an inclined transition surface to facilitate the positioning member 104 to smoothly move from the locking flange 106 to the release port 107 when the shell cover 80 is screwed to separate it from the outer shell assembly 90, so as to facilitate the operation of separating or engaging and locking the shell cover 80 and the outer shell assembly 90.

[0079] In some embodiments, the housing assembly 90 may further include a stopper side wall 111, and a locking section 112 may be provided between the stopper side wall 111 and the stopper surface 109, wherein when the shell cover 80 is locked with the housing assembly 90, the positioning member 104 is located in the locking section 112. The stopper side wall 111 and the stopper surface 109 are respectively located on both sides of the positioning member 104, limiting the horizontal mobility of the positioning member 104, thereby stably maintaining the positioning member 104 in the locking section 112, and preventing the positioning member 104 from sliding along the locking flange toward the release port 107, causing the shell cover 80 to loosen or separate from the housing assembly 90.

[0080] Specifically, in some embodiments, the axial thickness of the locking flange 106 at the locking section 112 can be set to be greater than other sections except the limiting section 108. This makes the height of the locking section 112 from the bottom surface of the housing assembly 90 along the first direction higher than the lowest surface of the upper surface of the locking flange 106. And the axial thickness of the locking section 112 can be equal to or slightly greater than the width of the locking groove 105 of the positioning member 104 along the first direction. This limits the positioning member 104 along the first direction, and then stabilizes the positioning member 104 on the locking section 112, preventing the positioning member 104 from sliding along the locking flange toward the release port 107, causing the shell cover 80 to loosen or separate from the housing assembly 90.

[0081] See also Fig.11 , Fig.11 An exemplary cross-sectional view of an applicator of a detection assembly of some embodiments of the present disclosure is shown. In some embodiments of the present disclosure, the housing assembly 90 may further include a stop side wall 111 for limiting the positioning member 104 in the rotation direction, and the stop side wall 111 may be set as a protrusion formed by the locking flange 106 extending away from the shell cover 80 in the first direction. The locking section 112 may be set between the stop side wall 111 and the stop surface 109 along the above-mentioned rotation direction. Thus, when the shell cover 80 and the housing assembly 90 are relatively locked, the positioning member 104 is located in the locking section 112, and one side of it along the rotation direction may be adjacent to the stop side wall 111, and the other side may be adjacent to the stop surface 109 of the limiting section 108, thereby being bidirectionally limited, further increasing its stability in the locked position. At the same time, the setting of the stop side wall 111 can also prevent the shell cover from being reversely screwed during installation or use, resulting in structural damage.

[0082] In some embodiments, the thickness of the locking flange 106 of the housing component 90 along the first direction and / or the protruding height of the ramp section 103 of the housing component 90 along the first direction can be set to have a change along the relative rotation direction of the housing component 90 and the shell cover 80. According to the rotation stage of the shell cover 80 relative to the housing component 90, different pressing forces are applied to the positioning member 104 to further strengthen the guidance of the user. For example, by setting the thickness of the locking flange 106 of the housing component 90 to be thick first and thin later along the relative rotation direction of the housing component 90 and the shell cover 80 toward the screwing position, the housing component 90 and the shell cover 80 can be relatively tightly matched in the first half of the start of the screwing, and the matching is relatively loose in the second half. After unscrewing, the shell cover 80 is released along the first direction, and its loose state can also remind the user that it has been unscrewed.

[0083] Those skilled in the art can understand that, although the above shows a housing using a first housing and a second housing, and a sloped section is provided on the first housing to abut against the housing cover to realize a screw-out reminder, the present disclosure does not limit the actual structure of the housing. For example, a sloped section can be provided on the second housing, and a corresponding positioning piece or groove can be provided on the housing cover, or the housing can include more sub-components, or the various components of the housing can move relative to each other, or only one housing component can be provided.

[0084] Thus, the detection component can remind the user of the operation direction when the housing component 90 and the shell cover 80 are separated in the first direction after rotating relative to each other, and the user can also separate the protective shell 30 from the needle 20 while separating the housing component 90 and the shell cover 80 in the first direction. The mutual abutment between the ramp section 103 and the positioning member 104 in the first direction reminds the user to move the shell cover 80 in the first direction, thereby separating the protective shell 30 from the needle 20, which can make the operation of removing the sealing part of the transmitter component by using the applicator more convenient and intuitive, and prevent the user from damaging the seal of the transmitter component 100 due to reverse rotation due to misoperation.

[0085] See also Fig.12 and Fig.13 , Fig.13 An exemplary exploded view of the detection assembly of some embodiments of the present disclosure is shown. In some embodiments, the shell cover 80 is also provided with a protective shell locking portion for placing or removing the protective shell 30, and the protective shell locking portion may include, for example, at least two lateral clamping hooks 84, and the two lateral clamping hooks 84 may include a clamping hook body 84a extending upward from the central part of the bottom surface of the shell cover 80, and the top end of the extension part of the clamping hook body 84a is provided with a clamping hook portion 84b protruding radially inward, and the radially inward end surface of the clamping hook portion 84b is used to abut the side of the protective shell 30. The radial inner end surface of the clamping hook portion 84b can be set to match the shape of the radial outer peripheral surface of the protective shell 30 to better position it.

[0086] In some embodiments, the circumferential side portion of the protective shell 30 is also provided with a positioning plane 30a extending in the radial direction, and the positioning plane 30a can abut against the positioning side 84d of the clamping hook portion 84b, so that the protective shell 30 can be clamped by the clamping hook portion 84b in at least a unidirectional anti-rotation form. It can be understood by those skilled in the art that although a positioning plane extending in the radial direction of the circumferential side of the protective shell 30 is described above, the present disclosure does not limit the form of the positioning structure on the outer side of the protective shell 30. For example, in some embodiments, the positioning plane 30a can also be set to form a certain angle with the radial direction, for example, it can be inclined toward the circumferential outer surface of the protective shell 30. The corresponding positioning side 84d of the clamping hook portion 84b of the shell cover 80 can also form a certain angle with the radial direction, and the inclination angles of the positioning plane 30a and the positioning side 84d can match each other. Thus, for example, when the positioning side surface 84d of the clamping hook portion 84b rotates with the positioning plane 30a, the lateral corner of the clamping hook portion 84d can at least partially rotate and move into the angle space formed by the positioning plane 30a and other side portions of the protective shell 30, and form a ratchet-pawl-like engagement therewith. Thus, the positioning side surface 84d and the positioning plane 30a can form a self-locking, preventing the lateral clamping hook 84 from deforming and disengaging when subjected to too much force.

[0087] See also Fig.14 , Fig.14 An exemplary stereogram of the detection assembly of some embodiments of the present disclosure is shown, in which the shell cover and the protective shell are hidden to clearly show the internal structure. In some embodiments, the transmitter 1 is anti-rotationally matched with the housing assembly 90. Specifically, a circumferential positioning member 901 may be provided inside the housing 91, and the circumferential positioning member 901 may include, for example, a plurality of circumferential positioning blocks 902 extending along the first direction toward the housing cover 80, and the plurality of circumferential positioning blocks 902 may be arranged adjacent to the transmitter 1 along the circumferential outer side of the transmitter 1, and abut against the transmitter 1 in the circumferential direction. Thus, the end faces of the plurality of circumferential positioning blocks 902 adjacent to the transmitter 1 form a shape match with the transmitter 1, so that the circumferential positioning member 901 forms an anti-rotation match with the transmitter 1. Since the needle 20 and the transmitter 1 form an anti-rotation match, by further making the circumferential positioning member 901 form an anti-rotation connection with the housing 91 by means of a bracket or other intermediate components, the needle 20 can be arranged in the housing assembly 90 in an anti-rotation manner.

[0088] It can be understood by those skilled in the art that the circumferential positioning block 902 can also be formed in other forms, for example, only one annular circumferential positioning block 902 matching the outer contour of the launcher 1 can be provided, so that the launcher 1 is arranged inside the positioning block 902 and connected to the shape of its inner wall. Alternatively, at least one radially recessed positioning groove can be provided on the launcher 1, and at least one circumferential positioning block 902 matching the shape of the positioning groove can be provided on the circumferential positioning member 901, so that the circumferential positioning block 902 is embedded in the positioning groove to limit the launcher 1 in the rotation direction, etc.

[0089] The working process of the detection component is described below with reference to the accompanying drawings.

[0090] See also Figure 1 , Figure 1 An exemplary cross-sectional view of the detection assembly of some embodiments of the present disclosure is shown, wherein the detection assembly is in an initial state, at which time the housing assembly is locked relative to the shell cover along a first direction, and the protective shell is locked relative to the needle along the first direction. In some embodiments, when the detection assembly is not turned on for use, the transmitter assembly 100 of the detection assembly is located inside the applicator, the needle 20 is locked by the locking mechanism, the protective shell 30 is clamped by the lateral clamping hook 84 of the shell cover 80, and the protective shell 30 and the needle 20 are relatively locked along the first direction.

[0091] See also Fig.15 , Fig.15An exemplary cross-sectional view of the detection assembly of some embodiments of the present disclosure is shown, which shows the state in which the protective shell and the needle are unlocked and removed after the shell cover of the detection assembly is rotated. After the shell cover 80 is screwed relative to the outer shell assembly 90, the positioning member 104 of the shell cover 80 rotates and moves along the locking flange 106 of the second shell 130, and can eventually be aligned with the release port 107 at the bottom of the second shell 130 and moved out in the vertical direction. At the same time, the side of the lateral clamping hook 84 of the shell cover 80 can abut the positioning plane 30a of the protective shell, so that the protective shell 30 rotates with the shell cover 80 until the positioning member 104 is aligned with the release port 107.

[0092] Those skilled in the art can understand that the positioning plane 30a and the side of the lateral clamping hook 84 can abut against each other along the first rotation direction, and can be rotated and separated in the opposite direction of the first rotation direction, that is, a unidirectional anti-rotation connection is formed between the positioning plane 30a and the side of the lateral clamping hook 84. In some embodiments, the circumferential outer side of the protective shell 30 and the lateral clamping hook 84 can be formed to be connected in a bidirectional anti-rotation manner in the rotation direction. For example, two radial protrusions can be provided on the circumferential outer side of the protective shell 30, and the two side surfaces of the lateral clamping hook 84 along the rotation direction are respectively provided to be adjacent to the two radial protrusions, thereby completely limiting the position of the protective shell 30 relative to the shell cover 80 in the rotation direction.

[0093] The positioning member 104 of the shell cover 80 is pushed against by the ramp section 103 along the first direction during the rotation toward the release port, so that the shell cover 80 as a whole is pushed in the direction away from the shell assembly 90. In the process of the positioning member 104 moving to align with the release port 107, the pushing force gradually reaches the maximum, and finally the ramp section 103 pushes the shell cover 80 to move away from the shell assembly 90, and the user can feel that the gap between the shell cover 80 and the shell assembly 90 in the first direction becomes larger. Thus, the user can be prompted to separate the shell cover 80 and the shell assembly 90 along the first direction. At the same time, the protective shell 30 and the needle 20 rotate horizontally relative to each other until the engagement is released. At this time, the protective shell 30 can fall by its own weight, and the lower part of the protective shell 30 can be at least partially received by the receiving hole formed by the upwardly protruding receiving side wall 85 and the lateral clamping hook 84 in the middle part of the shell cover 80. Thereafter, the protective shell 30 can be moved out relative to the shell assembly 90 along the first direction with the shell cover 80. The radial end surface of the hook portion 84b of the lateral hook 84 of the shell cover 80 can ensure that the protective shell remains vertical during rotation by virtue of its shape matching with the side surface of the protective shell 30, thereby reducing the risk of obstruction of the rotation movement due to the deflection of the protective shell.

[0094] The protective shell 30 may also be provided with a downwardly inclined positioning surface 30b, which may be formed as a partial conical surface, for example, and the top of the clip hook portion 84b near the radial inner side may be provided with a clip hook positioning surface 84c that matches the shape of the inclined positioning surface 30b. The clip hook positioning surface 84c may be used to contact the inclined positioning surface 30b in a shape-matching manner during assembly to guide the protective shell and ensure that it remains vertical during the assembly process. After the protective shell 30 is separated from the needle 20 and falls into the protective shell receiving tube 840, the inclined positioning surface 84c abuts against the inclined positioning surface 30b, so as to receive and position the protective shell 30 when the protective shell 30 falls in the vertical direction by means of the mutual cooperation of their respective conical surfaces. It can be understood by those skilled in the art that the clip hook positioning surface 84c and the inclined positioning surface 30b may be formed into other shapes that can form an automatic centering fit, such as an arc surface, a spherical surface, etc.

[0095] In some embodiments, the shell cover 80 can be configured to have a structure that limits the protective shell 30 along the first direction. Thus, the protective shell 30 can be more stably maintained on the shell cover 80, and external disturbances can be prevented from causing the protective shell 30 to move in the shell cover 80, thereby causing damage and deformation of the protective shell 30. For example, in some embodiments, a sealing plug may be provided on the bottom side of the protective shell 30. In such cases, when the detection component is in the shelf life, in a high-altitude low-pressure environment, or in a vibration transportation process, the protective shell 30 can be limited by the shell cover 80 to prevent the sealing plug at the tail end of the protective shell from falling off. For example, the preset distance between the bottom surface of the inner side of the shell cover and the bottom surface of the sealing plug on the bottom side of the protective shell 30 can be set by adjusting the size of the shell cover along the first direction. The preset distance can be set to ensure that the sealing plug and the bottom surface of the shell cover 80 are clearance fit during the normal shelf life. When the sealing plug moves downward or deforms in the case of vibration or negative pressure, the clearance fit becomes an interference fit or a zero fit, so that the sealing plug cannot continue to fall off. The preset distance can be determined according to a limit protrusion length that can maintain the sealing effect when the sealing plug falls off along the first direction after installation.

[0096] According to some embodiments of the present disclosure, the detection assembly is provided with a housing assembly 90 and a shell cover 80 that can rotate relative to each other and separate relative to each other along a first direction, so that the protective shell 30 and the needle 20 respectively provided on the housing assembly 90 and the shell cover 80 can be disconnected with the relative rotation of the housing assembly 90 and the shell cover 80, and the operation is simple and intuitive. And because the relative rotation of the shell cover 80 and the housing assembly 90 is a simple rotation in a horizontal plane, the relative rotation of the protective shell 30 and the needle 20 is guided by the contact part between the shell cover 80 and the housing assembly 90, so as to ensure the horizontality of the rotation action and prevent the protective shell 30 and the needle 20 from tilting or axial fluctuation due to improper operation, thereby damaging the related devices.

[0097] Although multiple embodiments of the present 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. Those skilled in the art may think of many changes, modifications, and alternatives without departing from the thought and spirit of the present disclosure. It should be understood that in the process of practicing the present disclosure, various alternatives to the embodiments of the present disclosure described herein may be adopted. The attached claims are intended to define the scope of protection of the present disclosure, and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A detection component, characterized in that: include: A transmitter assembly (100) comprising a needle (20) and a protective shell (30), wherein the protective shell (30) and the needle (20) are rotatably engaged relative to each other so as to be locked relative to each other in a first direction; An applicator, comprising a housing component (90) and a housing cover (80) locked with the housing component (90) in a first direction, wherein the protective housing (30) is connected to the housing cover (80) in a non-rotatable manner in at least one direction; as well as When the shell cover (80) is screwed relative to the housing assembly (90), the protective shell (30) is driven to rotate relative to the needle (20) to release the engagement, thereby being able to separate from the needle (20) in a first direction.

2. The transmitter assembly according to claim 1, characterized in that The shell cover (80) is at least partially unlocked relative to the housing assembly (90) in a first direction without displacement, so as to drive the protective shell (30) to rotate horizontally, so as to unlock it relative to the needle (20) in the first direction.

3. The detection component according to claim 1, characterized in that: The bottom of the housing component (90) is provided with a ramp section (103), and the axial end of the upper part of the shell cover (80) is provided with a positioning piece (104), wherein when the shell cover (80) is screwed through the ramp section (103), the ramp section (103) pushes the positioning piece (104) in a first direction, so as to prompt the shell cover (80) to be separated in the first direction after screwing.

4. The detection assembly according to any one of claims 1 to 3, characterized in that: The shell cover (80) further comprises a lateral clamping hook (84), wherein the lateral clamping hook (84) comprises a clamping hook portion (84b) protruding radially inwardly, wherein the radially inward end surface of the clamping hook portion (84b) is used to abut against the outer surface of the protective shell (30), and the positioning side surface (84d) of the clamping hook portion (84b) abuts against at least one positioning plane (30a) of the protective shell (30) to limit its position in the rotation direction.

5. The detection component according to claim 4, characterized in that: The positioning plane (30a) can also be set to be inclined toward the outer surface of the protective shell (30) to form an angle space with the outer surface of the protective shell (30), and the positioning side surface (84d) of the clamping hook portion (84b) is formed to match the inclination angle of the positioning plane (30a), so that the lateral edge corner of the clamping hook portion (84b) can be at least partially rotated and moved into the angle space, so that the positioning side surface (84d) is engaged with the positioning plane (30a).

6. The detection component according to claim 4, characterized in that: At least one blocking block (211) is provided on the needle (20), and at least one locking block (31) is provided on the protective shell (30); after the needle (20) and the protective shell (30) are horizontally rotated and engaged, the blocking block (211) and the locking block (31) can abut against each other along a first direction to prevent the needle (20) and the protective shell (30) from being relatively separated along the first direction.

7. The detection component according to claim 6, characterized in that: The blocking block (211) includes an upper abutting surface (215), and the locking member includes a lower abutting surface (32) corresponding to the upper abutting surface (215). The upper abutting surface (215) and the lower abutting surface (32) are formed to automatically center each other, and the blocking block (211) and the locking block (31) abut against each other by virtue of the contact between the upper abutting surface (215) and the lower abutting surface (32).

8. The detection assembly according to claim 7, characterized in that: The needle head (20) comprises at least two blocking blocks (211) which are arranged at an angular interval around the axis of the needle head (20).

9. The detection component according to claim 3, characterized in that: The positioning member (104) includes a locking groove (105) extending in the radial direction, and the housing (10) includes a locking flange (106) protruding inward in the radial direction, and the locking flange (106) cooperates with the locking groove (105) to lock the housing cover (80) in a first direction.

10. The detection component according to claim 3, characterized in that: The housing assembly (90) comprises a first shell (120) and a second shell (130) which are interlocked, and the ramp section (103) is arranged at the bottom end of the first shell (120).

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