Detection assembly

Abstract

Disclosed in the present disclosure is a detection assembly, comprising: a transmitter assembly and an applicator. The transmitter assembly comprises a needle and a protective shell, and the protective shell and the needle can be rotatably engaged relative to each other to be locked relative to each other in a first direction. The applicator comprises a housing assembly and a housing cover locked to the housing assembly in the first direction. The protective shell and the housing cover are connected in a manner preventing relative rotation therebetween in at least one direction. When the housing cover is screwed relative to the housing assembly, the housing cover drives the protective shell to rotate relative to the needle to disengage from the needle, thereby enabling the protective shell to be separated from the needle in the first direction. According to the detection assembly, the needle and the protective shell are arranged on the housing assembly and the housing cover, respectively, and the housing cover is enabled to screw and separate relative to the housing assembly, such that by means of the rotation and separation of the housing assembly and the housing cover, the needle and the protective shell can be separated, and the sealing of the transmitter assembly can be simply and reliably contacted.

Description

A detection assembly TECHNICAL FIELD

[0001] The present disclosure relates generally to the technical field of medical equipment. More particularly, the present disclosure relates to a detection assembly. BACKGROUND

[0002] In the current field of medical detection devices, a detection assembly commonly includes an emitter and an applicator for applying the emitter to a human body. The emitter can include components such as a detection 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 conveniently and safely unsealed when in use. However, in the current detection assembly, the operation for unsealing such a sealing structure is often complex and not very stable.

[0003] Therefore, there is an urgent need to provide a detection assembly so that the sealing of the emitter assembly can be simply and reliably unsealed. SUMMARY

[0004] To at least solve one or more technical problems as mentioned above, the present disclosure proposes a detection assembly scheme in various aspects.

[0005] The present disclosure provides a detection assembly, comprising: an emitter assembly and an applicator, the emitter assembly comprising a needle and a protective shell, the protective shell and the needle being rotatably engaged with respect to each other to be locked in a first direction; the applicator comprising a shell assembly and a shell cover locked with the shell assembly in the first direction, the protective shell and the shell cover being connected in at least one-way anti-rotation with respect to each other; wherein when the shell cover is screwed with respect to the shell assembly, the shell cover drives the protective shell to rotate with respect to the needle to unseal the engagement with the needle, so as to be separated from the needle in the first direction.

[0006] In some embodiments, the shell cover is at least partially unlocked without displacement with respect to the first direction with respect to the shell assembly to drive the protective shell to rotate horizontally, so that the protective shell is unlocked in the first direction with respect to the needle.

[0007] In some embodiments, the shell assembly is provided with a ramp section at the bottom, and the axial end of the upper part of the shell cover is provided with a positioning piece, wherein when the shell cover is screwed through the ramp section, the ramp section will abut the positioning piece in the first direction, for prompting the shell cover and the shell assembly to be separated in the first direction after continuing to screw.

[0008] In some embodiments, the shell cover further comprises a lateral hook, the lateral hook comprising a hook portion protruding radially inward, an end surface of the hook portion radially inward for abutting an outer surface of the protective shell, and a positioning side surface of the hook portion abutting at least one positioning plane of the protective shell to limit the rotation direction thereof.

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

[0010] In some embodiments, after the shell cover drives the protective shell to horizontally rotate to disengage, the protective shell can fall into the shell cover in the first direction, and the shell cover and the protective shell can be separated from the outer shell assembly in the first direction.

[0011] In some embodiments, at least one blocking block is arranged on the needle, and at least one locking block is arranged on the protective shell. After the needle and the protective shell are horizontally rotated to engage, the blocking block and the locking block can abut in the first direction to block the needle and the protective shell from being separated in the first direction.

[0012] In some embodiments, the blocking block includes an upper abutment surface, and the locking member includes a lower abutment surface corresponding to the upper abutment surface. The upper abutment surface and the lower abutment surface are formed to automatically center each other and abut each other through the contact of the upper abutment surface and the lower abutment surface.

[0013] In some embodiments, the needle includes at least two blocking blocks arranged at an angle interval around the axis of the needle.

[0014] In some embodiments, the positioning member includes a locking groove extending in the radial direction, and the launcher assembly includes a shell body including a locking flange protruding inward in the radial direction. The locking flange and the locking groove cooperate to lock the shell cover in the first direction.

[0015] In some embodiments, the outer shell assembly includes a first shell body and a second shell body that are buckled to each other, and the ramp section is arranged at the bottom end of the first shell body.

[0016] In some embodiments, the launcher assembly includes a launcher, and the needle and the protective shell are arranged on both sides of the launcher.

[0017] In some embodiments, the launcher includes a shell body and a detection member arranged inside the shell body. The shell body has a shell hole extending through the shell body in the vertical direction, and the detection member includes a detection needle extending downward in the vertical direction and protruding from the shell body.

[0018] In some embodiments, the needle includes a puncture needle for assisting the detection needle, and the protective shell encloses and seals the puncture needle and the detection needle.

[0019] In some embodiments, the detection device comprises a control circuit board, one end of the detection needle is electrically connected to the control circuit board, the other end extends into the shell hole and protrudes downward from the lower surface of the shell.

[0020] In some embodiments, the emitter further comprises a sticker, one side of the sticker is fixedly connected to the lower side of the shell, and the other side is provided with an adhesive substance.

[0021] In some embodiments, the shell comprises an upper shell, a lower shell and an auxiliary limiting piece, the upper shell and the lower shell are buckled to each other, and the auxiliary limiting piece is arranged between the upper shell and the lower shell, the upper shell, the lower shell and the auxiliary limiting piece together enclose a component cavity for accommodating the detection device.

[0022] By means of the detection assembly as provided above, the embodiments of the present disclosure can make it more convenient to unlock and separate the sealed part of the emitter assembly by rotating and separating the outer shell assembly and the shell cover to separate the needle and the protective shell. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which several embodiments of the present disclosure are shown by way of example, and wherein like reference numerals refer to like elements throughout. In the drawings:

[0024] FIG. 1 shows an exemplary cross-sectional view of a detection assembly according to some embodiments of the present disclosure;

[0025] FIG. 2 shows an exemplary cross-sectional view of an emitter assembly of a detection assembly according to some embodiments of the present disclosure;

[0026] FIG. 3 shows an exemplary exploded view of an emitter assembly of a detection assembly according to some embodiments of the present disclosure;

[0027] FIG. 4 shows an exemplary exploded view of an emitter assembly of a detection assembly according to some embodiments of the present disclosure;

[0028] FIG. 5 shows a perspective view of a needle of a detection assembly according to some embodiments of the present disclosure;

[0029] FIG. 6 shows a perspective view of a protective shell of a detection assembly according to some embodiments of the present disclosure;

[0030] FIG. 7 shows a perspective view of a shell assembly of a detection assembly according to some embodiments of the present disclosure;

[0031] Figure 8 shows an exploded schematic view of the applicator of the detection assembly according to some embodiments of the present disclosure;

[0032] Figure 9 shows a partial enlarged schematic view of section A in Figure 8;

[0033] Figure 10 shows a partial enlarged schematic view of section B in Figure 8;

[0034] Figure 11 shows an exemplary cross-sectional view of the applicator of the detection assembly according to some embodiments of the present disclosure;

[0035] Figure 12 shows an exemplary perspective view of the shell cover part of the detection assembly according to some embodiments of the present disclosure;

[0036] Figure 13 shows an exemplary exploded view of the detection assembly according to some embodiments of the present disclosure;

[0037] Figure 14 shows an exemplary perspective view of the detection assembly according to some embodiments of the present disclosure;

[0038] Figure 15 shows an exemplary cross-sectional view of the detection assembly according to some embodiments of the present disclosure.

[0039] Emitting assembly 100, needle 20, protective shell 30, housing assembly 90, shell cover 80, ramp section 103, positioning member 104

[0040] Lateral clamping hook 84, clamping hook part 84b, positioning plane 30a, blocking block 211, locking block 31, upper abutting surface 215

[0041] Lower abutting surface 32, locking groove 105, first housing 120, second housing 130, emitter 1, housing 10

[0042] Detection device 40, housing channel 110, detection needle 41, puncture needle 23, control circuit board 43, adhesive member 15

[0043] Upper housing 11, lower housing 13, auxiliary limiting member 12. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings in some embodiments of the present disclosure. Obviously, the described embodiments are part of, rather than all of, the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present disclosure.

[0045] It should be understood that the terms "comprises" and "comprising," when used in this specification and claims, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0046] It should also be understood that the terms used in the specification and claims are for the purpose of describing specific embodiments and are not intended to be limiting of the disclosure. As used in this specification and the claims, the singular forms "a," "an" and "the" include plural referents unless the context clearly dictates otherwise. It should also be further understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items, and that the term "at least one of" followed by a list of two or more items means any single one of the items in the list, and that the term "one or more of" followed by a list of two or more items means any single one or plurality of the items in the list.

[0047] It should also be further understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items, and that the term "at least one of" followed by a list of two or more items means any single one of the items in the list, and that the term "one or more of" followed by a list of two or more items means any single one or plurality of the items in the list. In this specification, the expression "A, B, and / or C" means at least one of A, B, or C, or any combination thereof. In other words, A, B, and / or C means A alone, B alone, C alone, A and B together, A and C together, B and C together, or A and B and C together.

[0048] In this specification, unless specifically stated otherwise, a relationship between structures is a direct relationship also an indirect relationship, is an entire relationship also a partial relationship. For example, when describing "A is connected to B", unless it is specifically stated that A is directly connected to B, it should be understood that A is directly connected to B, and A is also indirectly connected to B. For another example, when describing "A is on B", unless it is specifically stated that A is directly on B (AB is adjacent and A is on B), it should be understood that A is directly on B, and A is also indirectly on B (AB is separated by other elements, and A is on B). For another example, when describing "A is in B", unless it is specifically stated that A is entirely in B, it should be understood that A is entirely in B, and A is also partially in B. Similarly, the same applies.

[0049] As used in the specification and claims, the term "if' can be interpreted as meaning "when" or "upon" or "in response to a determination" or "in response to a detection" depending on the context. Similarly, the phrase "if determined" or "if detected [the described condition or event]" can be interpreted as meaning "upon a determination" or "in response to a determination" or "upon a detection of [the described condition or event]" or "in response to a detection of [the described condition or event]" depending on the context.

[0050] The detailed description of the specific embodiments of the present disclosure is described below with reference to the accompanying drawings.

[0051] The detection assembly provided by the embodiments of the present disclosure separates the needle and the protective shell by disposing the needle and the protective shell in rotational engagement with the needle in the housing assembly and the shell cover, respectively, and enabling the shell cover to be screwed and separated relative to the housing assembly, so that the needle and the protective shell are separated by the rotation and separation of the housing assembly and the shell cover, which can make the unlocking and separation of the sealed part of the emitter assembly more convenient.

[0052] For the purpose of clear description and easy understanding, in the following description, the side of the emitter in contact with the human body is regarded as the vertical lower side of the emitter, the side of the emitter away from the human body is regarded as the vertical upper side of the emitter, the direction parallel to the surface of the emitter in contact with the human body is regarded as the horizontal direction, the direction along the horizontal direction towards the detection needle of the emitter is regarded as the radial inward direction, and the direction along the horizontal direction away from the center of the detection needle of the emitter is regarded as the radial outward direction. The position description of other related components is based on the above description unless otherwise specified. The above description is only provided for the purpose of describing the reference direction of the relative position relationship of the structures, and is not a limitation on the actual arrangement of the structures of the embodiments of the present disclosure.

[0053] Referring to FIG. 1, FIG. 1 shows an exemplary cross-sectional view of a detection assembly according to some embodiments of the present disclosure. In some embodiments of the present disclosure, the detection assembly includes an applicator and an emitter assembly 100 disposed in the applicator, which can include an emitter 1 and a needle assisting assembly. The applicator can be a medical device for mounting the emitter 1 to the human body, and the applicator can include a housing assembly 90 and a shell cover 80 which are locked in a first direction relative to each other. The needle assisting assembly can include a needle 20 and a protective shell 30 which are in rotational engagement and locked in the first direction relative to each other.

[0054] In some embodiments, the needle 20 and the protective shell 30 can be disposed on both sides of the transmitter 1 along the first direction, and the protective shell 30 and the needle 20 can be rotationally engaged relative to 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 along the first direction, the needle 20 being rotationally connected with the housing assembly 90, and the protective shell 30 being at least one-way rotationally connected with the shell cover 80 relative to each other. The shell cover 80 can be screwed relative to the housing assembly 90 to be unlocked with the housing assembly 90 and separated from the housing assembly 90 along the first direction to drive the protective shell 30 to be horizontally rotated relative to the needle 20 to be disengaged with the needle 20 and separated from the needle 20 along the first direction.

[0055] Referring to FIG. 2 and FIG. 3, FIG. 2 shows an exemplary sectional view of a transmitter assembly of a detection assembly according to some embodiments of the present disclosure; and FIG. 3 shows an exemplary exploded view of a transmitter assembly of a detection assembly according to some embodiments of the present disclosure. In some embodiments, the transmitter assembly 100 can include a transmitter 1. The transmitter 1 can be an electronic device for being mounted on a human body and detecting a physiological index such as blood glucose of the human body. The transmitter 1 can include a housing 10 and a detection device 40, wherein the detection device 40 can be disposed inside the housing 10. The housing 10 can have a housing channel 110 extending through the housing 10 along a vertical direction, and the detection device 40 can include a detection needle 41 extending downward along the vertical direction and protruding out of the housing 10. The detection needle 41 can be used to extend into the human body to detect the corresponding physiological index in the human body.

[0056] The needle 20 can include a puncture needle 23 for assisting the detection needle 41 to penetrate into the human body. The protective shell 30 is used to surround and seal the puncture needle 23 and the detection needle 41 to protect the puncture needle 23 and the detection needle 41, thereby isolating the puncture needle 23 and the detection needle 41 from the external environment and avoiding the risk of infection during use. Through the sealing protection, the sterile state of the puncture needle 23 and the detection needle 41 before use is ensured, and the safety of use by the user is improved. 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 a first rotation direction to a locked position, so as to be locked relative to each other along the first direction. The needle 20 and the protective shell 30 can also be horizontally rotated relative to each other in a direction opposite to the first rotation direction to an unlocked position, at which the protective shell 30 is unlocked with the needle 20 and can be separated from the needle 20 along the first direction with the shell cover 80.

[0057] Referring to FIG. 4, which shows an exemplary exploded view of the transmitter assembly of the detection assembly according to some embodiments of the present disclosure. Specifically, in some embodiments, the housing 10 can be substantially flat. Inside the housing 10 can be fixedly arranged a detection device 40, which can include a detection needle 41 for implanting into a human body to contact a detection object and a control circuit board 43 for processing and transmitting detection parameters. The detection needle 41 can be electrically connected to the control circuit board 43 at one end and extend into the housing channel 110 and protrude out of the lower surface of the housing 10 in a vertical direction. In some embodiments, in order to stably fix the transmitter 1 to the surface of the human body, a sticky member 15 can be fixedly arranged on the lower side of the housing 10. The sticky member 15 can be substantially flat, with one surface fixedly connected to the lower side of the housing 10 and the other surface provided with a sticky substance such as glue for sticking to the skin of the human body.

[0058] In some embodiments, the housing 10 can include an upper housing 11 and a lower housing 13 that are mutually coupled, and an auxiliary limiting member 12 arranged between the upper housing 11 and the lower housing 13, which together enclose an assembly cavity for accommodating the detection device 40. Specifically, in some embodiments, the upper housing 11, the lower housing 13 and the auxiliary limiting member 12 are all substantially flat, and each of them is provided with an opening that penetrates in a vertical direction. The openings of the upper housing 11, the auxiliary limiting member 12 and the lower housing 13 are sequentially connected in a first direction, thereby forming the housing channel 110 of the housing 10. The side of the lower housing 13 adjacent to the opening can be provided with a lower flange 137 that protrudes upward and surrounds the opening, and the portion of the upper housing 11 adjacent to the opening can be provided with an upper flange 117 that protrudes downward and surrounds the opening. The bottom surface of the auxiliary limiting member 12 abuts the upper end surface of the lower flange 137, and the upper surface of the auxiliary limiting member 12 is spaced apart from the lower end surface of the upper flange 117 in a vertical direction, and is fixedly connected in the space between them by injection molding, clamping or other forms. At the same time, the outer peripheral edge portions of the upper housing 11 and the lower housing 13 can also protrude relative to each other and be sealed by injection molding or other means. In this way, the auxiliary limiting member 12 can support the upper housing 11 in a vertical direction, preventing it from being directly affected by external pressing force and deformed or damaged, thereby protecting the internal electronic devices from being squeezed and damaged. The upper housing 11, the lower housing 13 and the auxiliary limiting member can also seal the assembly cavity from the outside.

[0059] Referring to FIG. 5, FIG. 5 shows a perspective view of a needle of a transmitter assembly of a detection assembly according to some embodiments of the present disclosure. The needle 20 of the needle assisting assembly can include a puncture needle 23 and a needle holder 21 for fixing the puncture needle 23, and the puncture needle 23 can be made of a metal material such as medical-grade stainless steel. The puncture needle 23 can include a needle body 233 in a substantially long strip shape, and one end of the needle body 233 can be provided with a sharp needle tip 231, and the other end can be provided with a needle tail 236 for connecting the needle body 233 with the needle holder 21. The needle body 233 can also be provided with a needle accommodating groove 230 passing through in the direction of the needle tip 231, and the cross-sectional shape, cross-sectional size and extension length of the needle accommodating groove 230 can 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 part of the detection needle 41 extending in the vertical direction in the needle accommodating groove 230.

[0060] In some embodiments, the needle accommodating groove 230 can have a substantially U-shaped cross section, so that the detection needle 41 can be placed in the needle accommodating groove 230 through the opening of the needle accommodating 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 accommodating groove 230, and the needle accommodating groove 230 can be provided with other shapes such as V-shaped or semicircular shape, or the size of the needle accommodating groove 230 can be set to be larger than the detection needle to improve the convenience of assembly, or the length of the needle accommodating groove 230 can be set to be longer than the detection needle to ensure that the detection needle does not touch the human skin before puncture. Specifically, the needle accommodating groove 230 can surround the detection needle 41 and assist the detection needle 41 to complete the penetration. The needle holder 21 can be made of an engineering plastic such as polycarbonate, and the needle holder 21 can be connected with the needle tail 236 of the puncture needle 23, and can be made by injection molding and integrated with the needle body 233.

[0061] The needle guide groove 214 can be recessed on the needle hub 21 in the same direction and angle as the needle accommodating groove 230. The needle body 233 can be partially exposed in the needle guide groove 214, and the needle body 233 can partially cover the bottom and sidewall of the needle accommodating groove 230, so that the needle accommodating groove 230 is exposed from the needle guide groove 214. The radial extension direction of the needle guide groove 214 can be at an angle with the radial side of the positioning segment 213 for positioning. Thus, a larger rotational fitting angle can be formed between the upper abutting surface 215 and the lower abutting surface 32 to increase the fitting strength between the needle 20 and the protective shell 30. At the same time, the needle guide groove 214 can have a larger radial depth in the needle hub 21, so that the outer periphery of the needle body 233 is thicker in combination with the material of the needle body 233, thereby improving the connection strength of the needle body 233 and the needle hub 21. The setting angle of the needle guide groove 214 can correspond to the extension angle of the detection needle 41, so that the detection needle 41 can extend radially into the needle guide groove 214. In some embodiments, the two inner sidewalls of the needle guide groove 214 can also be provided with a certain inclination angle to expand the opening towards the detection needle 41, to guide the extension of the detection needle 41, and to facilitate the positioning of the detection needle 41 relative to the needle accommodating groove 214 during installation.

[0062] Referring to FIG. 6, FIG. 6 shows a perspective view of a protective shell assembly of a transmitter assembly of a detection assembly according to some embodiments of the present disclosure. In some embodiments, the protective shell assembly can include the protective shell 30 and a first seal 51 fixedly arranged on the upper side of the protective shell 30. The needle 20 can have a first joint, and the protective shell 30 can have a second joint, and the first joint and the second joint can be engaged in the shell hole 110. The first joint can include a blocking block 211 formed on the lower side of the needle hub 21 of the needle 20, and the blocking block 211 can protrude radially outward from a substantially cylindrical joint body 217. The second joint can include a locking block 31 formed on the upper side of the protective shell 30, and the locking block 31 can extend upward and further protrude radially inward. The first joint and the second joint can be aligned in the vertical direction, and the first joint can further have a clearance position for the locking block 31 of the second joint. Alternatively, the first joint can include at least one blocking block 211 protruding radially outward from the sidewall of the joint body 217, and the upper side of the blocking block 211 can have an upper abutting surface 215 upward in the vertical direction. The second joint can include a locking block 31 protruding upward in the vertical direction from the upper end surface of the protective shell 30, and the locking block 31 can be inclined radially inward while protruding upward to form a lower abutting surface 32 downward in the vertical direction. In some embodiments, the upper abutting surface 215 and the lower abutting surface 32 can be two conical surfaces that are mutually shaped and fitted.

[0063] 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 housing channel 110, so that the first joint and the second joint can both at least partially extend into the housing channel 110. By setting the cross-sectional area and relative arrangement position of the blocking block 211 and the locking block 31, the blocking block 211 and the locking block 31 can be mutually avoided in the vertical direction when the first joint and the second joint both extend into the housing channel 110. Thus, the first joint and the second joint can continue to move towards each other in the vertical direction until they are partially interlaced. Further, the first joint and the second joint can be relatively rotated until the upper abutting surface 215 of the blocking block 211 and the lower abutting surface 32 of the locking block 31 can abut each other in the vertical direction.

[0064] Meanwhile, the lower side of the needle seat 21 can also be provided with an upper abutting portion 219, and the upper side of the protective shell 30 can be provided with a lower abutting portion 309. The upper abutting portion 219 is used to abut downwardly towards the housing 10 in the vertical direction after the first joint extends into the housing channel 110, and similarly, the lower abutting portion 309 is used to abut upwardly towards the housing 10 in the vertical direction after the second joint extends into the housing channel 110. After the first joint and the second joint extend into the housing channel 110 from both sides of the housing 10, the first joint and the second joint are engaged and can be relatively rotated from an unlocked position to a locked position.

[0065] Specifically, when the blocking block 211 of the first joint and the locking block 31 of the second joint mutually avoid each other in the vertical direction, this position is the unlocked position, and the first joint and the second joint can be relatively separated in the vertical direction in the housing channel 110. While the first joint and the second joint are relatively rotated in the housing 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 locked position, and at this time, the relative separation of the first joint and the second joint in the vertical direction in the housing channel 110 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 abut against the housing 10 from the upper and lower directions respectively, so that the needle 20 and the protective shell 30 cannot move relative to the housing 10 in the vertical direction, thereby realizing the locking of the entire launcher assembly in the vertical direction.

[0066] Referring to FIG. 5, in some embodiments, the first joint of the needle hub 21 can include two blocking blocks 211, and the second joint of the protective shell 30 can correspondingly include two locking blocks 31, wherein the two blocking blocks 211 can be symmetrically arranged on both sides of the joint body 217 relative to the vertical direction. 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 to the joint body 217, avoiding the occurrence of tilting when holding or releasing the protective shell 30 due to unbalanced force. Those skilled in the art can understand that although the above describes an embodiment provided with two blocking blocks 211 and two locking blocks 31, the present disclosure does not limit the number and shape of the locking blocks 31 and the blocking blocks 211, and only one blocking block 211 and the corresponding locking block 31 of the blocking block 211 can be provided, or more blocking blocks 211 and corresponding locking blocks 31 can be provided, or only one blocking block 211 is provided, and multiple locking blocks 31 are simultaneously engaged with the blocking block 211 for locking, etc., as long as the first joint and the second joint can be locked or released relative to the vertical direction by rotation.

[0067] Referring to FIG. 7, FIG. 7 shows a perspective view of the bottom of the housing of the transmitter assembly of the detection assembly according to some embodiments of the present disclosure. In some embodiments, the upper side of the locking block 31 is further provided with an inclined lower guide surface 33 which can be substantially in the shape of a partial conical surface, and the inner side of the housing channel 110 is provided with a guide portion which protrudes 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 installing the protective shell 30, the second joint is adjusted in position towards the center of the two guide surfaces by the shape cooperation between the upper guide surface 133 and the lower guide surface 33 with the movement of the second joint in the vertical direction. Thus, the situation that the protective shell 30 and the needle 20 cannot be aligned when installing the protective shell 30 is reduced. When the second joint is rotated 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 does not deviate or tilt relative to the transmitter 1 in the radial direction.

[0068] In some embodiments, the upper portion of the protective shell 30 further comprises a guiding portion, and the housing 10 can be provided with a positioning portion for cooperating with the guiding portion, and the guiding portion can be used to provide a pressing force for pressing the first joint and the second joint against each other when the first joint and the second joint are relatively rotated. Specifically, in some embodiments, the guiding portion can comprise a first guiding block 34 with a lower height protruding upward from the upper end of the protective shell 30, and the positioning portion can comprise a first positioning block 132 extending from the housing 10 towards the first guiding block 34. The first positioning block 132 can be arranged on the rotating movement path of the first guiding block 34, and both or one of them can have a guiding slope 35 arranged at the end. In this way, when the second joint is rotated relative to the housing 10, the first positioning block 132 can be in contact with the first guiding block 34 and moved to the upper surface of the first guiding block 34 by means of the guiding slope 35. The first positioning block 132 is enabled to abut against the guiding surface towards the lower side of the housing 10, thereby enabling the protective shell 30 to be subjected to a downward pressure. The downward pressure will be transmitted to the contact portion of 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.

[0069] Meanwhile, when the locking block 31 and the blocking block 211 are engaged and in the locked position, the upper guiding surface 133 can also limit the radial deformation of the lower guiding surface 33 by means of the contact between the upper guiding surface 133 and the lower guiding surface 33. That is, when there is a contact pressure between the locking block 31 and the blocking block 211 in the axial direction, the contact pressure can 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 guiding surface 33 to abut against the upper guiding surface 133 in the radial direction. In this way, it is possible to prevent the relative deflection or loosening between the lower guiding surface 33 and the upper guiding surface 133 due to the elastic deformation of the locking block 31.

[0070] As can be understood by those skilled in the art, although the above describes an embodiment in which the upper guiding surface 133 is arranged as at least partially a conical surface, and the lower guiding surface 33 is arranged in a matching shape, in other embodiments, the upper guiding surface can also be arranged in other shapes that can produce an automatic centering effect. Partial spherical surface, circular arc surface, or arranged to comprise a plurality of inclined sub-guiding surfaces opposite to each other, and the lower guiding surface 33 is formed in a matching shape, so that the upper guiding surface 133 and the lower guiding surface 33 form an automatic centering cooperation. In some embodiments, at least one of the upper abutting surface and the lower abutting surface can be formed as a rotational curved surface, and the two can form a sliding fit with each other by means of the rotational curved surface. One of them can be formed as a conical surface, and the other can be formed as a corresponding conical surface, or as a spherical surface or other rotational curved surface, as long as it can satisfy the sliding fit between the two, thereby ensuring that the two remain in stable contact during relative rotation, preventing the occurrence of jamming or jumping phenomenon.

[0071] The first guide block 34 and the first positioning block 132 can constitute a circumferential stop mechanism. When the second joint is rotated relative to the housing 10 to the first positioning block 132 contacts the end surface or the guide slope 35 of the guide block, the second joint will be resisted in the rotation direction. Only when the driving force driving the rotation of the second joint can drive the elastic deformation distance of the locking block 31 in the vertical direction to be greater than the height difference between the first positioning block 132 and the first guide block 34, the second joint can move to the upper surface of the guide block across the end surface or the guide slope 35. Thus, the first guide block 34 can be circumferentially positioned with the first positioning block 132, and by setting one end surface of the first guide block 34 at the corresponding position when the rotation is completed, reverse rotation of the second joint relative to the housing 10 can be prevented.

[0072] 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 matched conical surfaces, the cooperation of the guide and the positioning can also have additional effects of providing additional cooperation pressure in the vertical direction. That is, when the first joint and the second joint are relatively rotated, the upper abutting surface 215 and the lower abutting surface 32 can be automatically centered due to the relative thrust force generated by the cooperation of the two conical surfaces. Thus, when the protective shell 30 is screwed on or unlocked to remove the protective shell 30, the protective shell 30 can keep the relative angle between the protective shell 30 and the first needle 20 unchanged by means of the two mutually matched conical surfaces, thereby greatly reducing the situation that the protective shell 30 is skewed or even misaligned to touch the puncture needle 23 during screwing.

[0073] In addition, the upper abutting surface 215 and the lower abutting surface 32 are set as mutually matched conical surfaces, which can also increase the contact area between the first joint and the second joint. At the same time, due to the interaction of the two conical surfaces, the first joint and the second joint not only support each other in the vertical direction when in the locked position, but also support each other in the radial direction, thereby further improving the connection strength between the first joint and the second joint. Further, when the upper guide surface 133 is also set as a conical surface, the upper guide surface 133 can also guide 215 when the first joint is pulled out in the vertical direction, that is, even if the first joint is skewed relative to the housing due to the incorrect pulling-out direction when being pulled out, the first joint can be guided back to the vertical direction by the contact between the conical surface of the upper abutting surface 215 and the conical surface, thereby further preventing the puncture needle from being stuck or skewed when being pulled out.

[0074] The guiding portion can further include a second guiding block 37, and the housing 10 can be provided with a second positioning block 131 spaced from the first positioning block 132. The second guiding block 37 can be spaced from the first guiding block 34, and a guiding positioning groove 38 can be defined therebetween. The guiding positioning groove 38 can be sized and shaped to match the second positioning block 131. Thus, when the second joint is rotated to align the guiding positioning groove 38 with the second positioning block 131, the second joint can be held in a pre-locked position by the guiding positioning groove 38, and cannot be easily rotated further or reversed. Also, when the second joint is rotated to align the guiding positioning groove 38 with the second positioning block 131 during assembly, the assembler can feel the vibration of the moment when the second positioning block 131 engages the guiding positioning groove 38, to remind the assembler that the installation is in place. By adjusting the position of the guiding positioning groove 38, the pre-locked angle of the second joint relative to the housing 10 can be adjusted in the rotation direction of the second joint. In some embodiments, the pre-locked position can correspond to the locked position of the second joint relative to the first joint. Thus, when the second joint is rotated to the pre-locked position relative to the housing 10, it is also rotated to the locked position relative to the first joint inserted into the housing channel 110. Thus, the guiding positioning groove 38 also provides a screw-in-place prompt for installation, reducing the occurrence of damage to the second joint caused by over-rotation of the protective cover 30 during installation.

[0075] The first guiding block 34 and the second guiding block 37 of the guiding portion can each be a portion disposed adjacent to the outer peripheral edge of the upper end surface of the second joint. Those skilled in the art can understand that the present disclosure does not limit the specific structure of the guiding portion, which can include more guiding blocks and positioning blocks, or the guiding portion can include a continuous curved surface formed on the upper end surface of the second joint, or the guiding portion can be provided as a continuous protrusion protruding radially outward from the radial side wall of the second joint, etc. It is only required to be able to abut the positioning portion on the housing 10 in the vertical direction to provide a pushing force, and / or to form a pre-lock and / or a check in the rotation direction.

[0076] The housing 10 can further comprise a first circumferential limiting mechanism capable of limiting the rotation of the first joint in the rotation direction of the first joint, so as to limit the rotation angle of the first joint relative to the housing 10. Specifically, the first circumferential limiting mechanism of the housing 10 can be a circumferential limiting hole (e.g. 136, 121). The circumferential limiting hole (e.g. 136, 121) can be arranged at the center of the housing 10 and communicate with the housing hole 110 in the vertical direction. The first joint can be provided with a limiting segment 213, which can be shaped to form a shape fit 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 hole 110, the circumferential limiting hole (e.g. 136, 121) engages with the limiting segment 213 and limits the rotation of the first joint relative to the housing 10. The cross-sectional shape of the circumferential limiting hole (e.g. 136, 121) can be formed as a substantially rounded rectangle, and the cross-sectional shape of the limiting segment 213 on the first joint can also be formed as a rounded rectangle. It can be understood that the circumferential limiting hole (e.g. 136, 121) and the limiting segment 213 can also be provided with other cross-sectional shapes, such as a triangle or a rhombus, etc. In some other embodiments, the circumferential limiting hole (e.g. 136, 121) can also not form a shape fit with the limiting segment 213, and the circumferential limiting hole (e.g. 136, 121) can be provided with a long slot, and the limiting segment 213 can be provided with an abutting surface abutting against two sides of the long slot. For example, the circumferential limiting hole (e.g. 136, 121) and the limiting segment 213 can be arranged to be capable of rotating relative to each other by a certain angle, etc.

[0077] The opening of the upper housing 11 can be formed as a circumferential limiting hole 136 for circumferentially limiting the first joint. Similarly, the opening of the auxiliary limiting member 12 can be formed as a circumferential limiting hole 121 for circumferentially limiting the first joint. The width dimension of the circumferential limiting holes of the auxiliary limiting member 12 and the upper housing 11 can be greater than the width dimension of the first joint, so that the first joint will not be stuck or move unsmoothly when it is withdrawn from the circumferential limiting holes due to slight tilting or misalignment. Further, the side edges of the circumferential limiting holes of the auxiliary limiting member 12 and the upper housing 11 can be provided with inclined escape slopes 121a and 136a towards the first joint, so as to facilitate the withdrawal of the first joint relative to the housing, so as to prevent the circumferential surface of the housing hole 110 from abutting against the stop block 211 in the vertical direction when the stop block 211 is moved out of the housing hole 110, thereby enhancing the smoothness of the needle withdrawal action.

[0078] The shell 10 can further comprise a second circumferential limiting mechanism for abutting against the protective shell 30 in the rotation direction of the protective shell 30 to limit the rotation angle thereof. The portion of the shell 10 adjacent to the shell passage 110 can be provided with a circumferential limiting block protruding radially inwardly into the shell passage 110, which can be arranged on the path of rotation of the locking block 31 of the second joint, thereby limiting the rotation angle of the second joint relative to the shell 10. The first positioning block 132 can also serve as a circumferential limiting block, and the second circumferential limiting mechanism can comprise two circumferential limiting blocks, each of which has a first limiting side 134 for abutting against a side of the locking block 31. The position of the first limiting side 134 can be arranged in correspondence with the first circumferential limiting mechanism, such that when the second joint is rotated relative to the first joint to the locked position, the first limiting side 134 abuts against the side of the locking block 31. Thus, over-tightening when installing the locking protective shell 30 can be prevented. Similarly, each circumferential limiting block can comprise a second limiting side 135 for abutting against the other side of the locking block 31 when the locking block 31 is rotated to the unlocked position, thereby preventing over-rotation thereof.

[0079] Referring to FIG. 8 and FIG. 12, FIG. 8 shows an exploded schematic view of an applicator of the detection according to some embodiments of the present disclosure; and FIG. 12 shows an exemplary perspective view of a shell cover portion of a detection assembly according to some embodiments of the present disclosure. The lower portion of the housing assembly 90 can be provided with a ramp section 103 protruding in a first direction towards the shell cover 80, and the axial end of the upper portion of the shell cover 80 is provided with a positioning member 104 protruding upwardly, wherein when the shell cover 80 is screwed through the ramp section 103, the ramp section 103 abuts against the positioning member 104 in the first direction, for prompting that after further screwing, the shell cover 80 and the housing assembly 90 will be separated in the first direction.

[0080] Specifically, the housing assembly 90 can comprise a first shell 120 and a second shell 130, wherein the first shell 120 and the second shell 130 can each be formed as a hollow structure, and the first shell 120 and the second shell 130 can be nested in the first direction to jointly form the housing 91, and the first shell 120 and the second shell 130 can each be formed as a substantially cylindrical shape.

[0081] The ramp section 103 protrudes in the first direction towards the shell cover 80 from the lower end surface of the first shell 120. When the shell cover 80 is fastened to the housing 91 in the first direction, the lower end of the first shell 120 can be located radially inwardly of the second shell 130, and the ramp section 103 can abut against the positioning member 104 provided on the shell cover 80 in the first direction when the shell cover 80 is rotated relative to the housing 91.

[0082] According to such an arrangement, when the user rotates the shell cover 80 to move the positioning member 104 in the rotation direction, the upper surface of the positioning member 104 comes into contact with the axial end surface of the inclined section 103 and slides against the inclined section 103 along the inclined end surface of the inclined section 103. During the sliding, the height of the inclined section 103 in the axial direction gradually increases, thereby gradually pushing the positioning member 104 downward in the first direction, so that the positioning member 104 is pushed downward in the first direction, thereby achieving the purpose of prompting the user to separate the shell cover 80 in the first direction.

[0083] By arranging the relative positions of the inclined section 103 and the positioning member 104, the highest point of the inclined section 103 can be aligned with the positioning member 104 when the shell cover 80 is in the open position. According to such an arrangement, the abutting force of the inclined section 103 in the first direction gradually reaches the maximum during the rotation of the positioning member 104 to the edge side of the open position, so that the user can clearly perceive the protrusion of the positioning member 103 in the first direction, thereby ensuring that the user receives the prompt to separate the shell cover 80 in the first direction after rotation.

[0084] The open position can be a position in which the shell cover 80 can be rotated to the maximum opening degree, and the shell cover 80 cannot be further rotated forward in the open position.

[0085] Referring to FIG. 9, FIG. 9 is a partially enlarged view of portion A in FIG. 8. The inclined section 103 is provided with a downwardly inclined protruding flange on the axial outer side. According to such an arrangement, when the shell cover 80 is in the open position, the downwardly inclined protruding flange of the inclined section 103 abuts against the upper end surface of the positioning member 104 in the first direction, so that the positioning member 104 is clearly protruded in the first direction, thereby enabling the user to clearly perceive the protrusion of the positioning member 103 in the first direction, thereby ensuring that the user receives the prompt to separate the shell cover 80 in the first direction after rotation.

[0086] As shown in FIG. 8 and FIG. 12, the positioning member 104 includes a locking groove 105 extending in the radial direction. The housing assembly 90 includes a locking flange 106 protruding in the radial direction inwardly, which cooperates with the locking groove 105 to lock the shell cover 80 in the first direction. Specifically, the positioning member 104 can be arranged to protrude in the axial direction of the shell cover 80 towards the housing assembly 90, which can be arranged at a position radially outside the shell cover 80. At a position radially outside the positioning member 104, the locking groove 105 can be arranged to recess in the radial direction outside the surface of the positioning member 104. Correspondingly, at the lower end surface of the second housing 130 of the housing assembly 90, the locking flange 106 can be arranged to protrude in the radial direction inwardly, which can be arranged to cooperate with the locking groove 105, such that after the shell cover 80 is buckled with the housing assembly 90, 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 can abut against the upper surface of the locking flange 106, whereby the shell cover 80 can be locked in the first direction relative to the housing assembly 90.

[0087] As shown in FIG. 8, the locking flange 106 further has a release opening 107 extending in the axial direction, which is matched in shape and position with the positioning member 104, such that the positioning member 104 can be extended into the interior of the housing assembly 90 in the first direction by the release opening 107, and further rotated relative to the housing assembly 90, so as to rotate the locking groove 105 of the positioning member 104 to be sleeved on the locking flange 106 in the direction of relative rotation. Thus, the shell cover 80 can be locked relative to the housing assembly 90 in a simple manner.

[0088] The position of the release opening 107 can be arranged at the lower end of the ramp section 103. When the shell cover 80 is started to be screwed, the positioning member 104 will be moved synchronously on the locking flange 106, and when the positioning member 104 moves to the release opening 107, the ramp section 103 will abut against the upper end surface of the positioning member 104 in the first direction, and the positioning member 104 is pushed downwardly in the first direction from the release opening 107, for further prompting the shell cover 80 to be separated in the first direction after being screwed.

[0089] The height of the ramp section 103 can be arranged such that the positioning member 104 protrudes obviously downwardly in the first direction when abutting against the ramp section 103, for prompting the shell cover 80 to be separated in the first direction after being screwed.

[0090] Referring to FIG. 10, which shows a partial enlarged view of portion B in FIG. 8. The locking flange 106 can include a plurality of segments arranged in sequence along the rotation direction of the positioning member 104 and the locking flange 106, wherein the plurality of segments can have different thicknesses in the first direction. The locking flange 106 can include a limiting segment 108 formed by thickening upwards in the first direction, and the limiting segment 108 can include a return stop surface 109 arranged on one side of the limiting segment 108 in the rotation direction of the positioning member 104 and the locking flange 106. Specifically, the limiting segment 108 can be formed by thickening upwards from the upper surface of the locking flange 106, and the return stop surface 109 can be arranged on the side of the limiting segment 108 away from the release opening 107 in the above-mentioned rotation direction. Thus, after the positioning member 104 moves along the locking flange 106 to cross the limiting segment 108, the return stop surface 109 can be used to fix the positioning member 104 to prevent it from moving out in the opposite direction. Thus, the shell assembly 90 and the shell cover 80 can be locked in the rotation direction, preventing the positioning member 104 from sliding towards the release opening 107, which can cause the shell cover 80 to loosen or separate from the shell assembly 90.

[0091] In addition, the return stop surface 109 of the limiting segment 108 and the side surface opposite the return stop surface 109 can be arranged as an inclined transition surface to facilitate smooth movement of the positioning member 104 along the locking flange 106 to the release opening 107 when the shell cover 80 is unscrewed to separate it from the shell assembly 90, thereby facilitating the operation of separating or engaging the shell cover 80 with the shell assembly 90.

[0092] The shell assembly 90 can further include a stop side wall 111, and a locking segment 112 can be arranged between the stop side wall 111 and the return stop surface 109, wherein the positioning member 104 is located in the locking segment 112 when the shell cover 80 is locked with the shell assembly 90. The stop side wall 111 and the return stop surface 109 are located on the two sides of the positioning member 104, respectively, to limit the movement of the positioning member 104 in the horizontal direction, thereby stably holding the positioning member 104 in the locking segment 112 and preventing the positioning member 104 from sliding along the locking flange towards the release opening 107, which can cause the shell cover 80 to loosen or separate from the shell assembly 90.

[0093] Specifically, the axial thickness of the locking flange 106 at the locking segment 112 can be greater than that of the other segments except the limiting segment 108. The height of the locking segment 112 from the bottom surface of the shell assembly 90 in the first direction is higher than the lowest surface in the upper surface of the locking flange 106. The axial thickness of the locking segment 112 can be equal to or slightly greater than the width of the locking groove 105 of the positioning member 104 in the first direction. The positioning member 104 is positioned in the first direction, thereby stably holding the positioning member 104 on the locking segment 112 and preventing the positioning member 104 from sliding along the locking flange towards the release opening 107, which can cause the shell cover 80 to loosen or separate from the shell assembly 90.

[0094] Referring to FIG. 11, an exemplary cross-sectional view of the applicator of the detection assembly of some embodiments of the present disclosure is shown. The housing assembly 90 can further comprise a stop side wall 111 for limiting the position of the positioning member 104 in the rotation direction, which can be formed as a protrusion extending from the locking flange 106 away from the shell cover 80 in the first direction. A locking section 112 can be arranged between the stop side wall 111 and the stop surface 109 in the rotation direction. Thus, when the shell cover 80 is locked relative to the housing assembly 90, the positioning member 104 is located in the locking section 112, one side of which can abut against the stop side wall 111 and the other side can abut against the stop surface 109 of the limiting section 108 in the rotation direction, so as to be limited in both directions, further increasing the stability of the positioning member 104 in the locked position. Meanwhile, the arrangement of the stop side wall 111 can also avoid the situation that the shell cover is screwed in the reverse direction during installation or use, causing damage to the structure.

[0095] The thickness of the locking flange 106 of the housing assembly 90 in the first direction and / or the protruding height of the slope section 103 of the housing assembly 90 in the first direction can be arranged to have a variation in the relative rotation direction between the housing assembly 90 and the shell cover 80. In order to apply different pressing forces to the positioning member 104 according to the rotation stage of the shell cover 80 relative to the housing assembly 90, so as to further strengthen the guidance to the user. By arranging the thickness of the locking flange 106 of the housing assembly 90 to be thick first and then thin in the relative rotation direction between the housing assembly 90 and the shell cover 80 towards the unscrewing position, the relative fit between the housing assembly 90 and the shell cover 80 can be relatively tight in the first half of the screwing process and relatively loose in the second half of the screwing process. After unscrewing, the shell cover 80 is released in the first direction, and the loose state can also remind the user that the shell cover 80 has been unscrewed.

[0096] Those skilled in the art can understand that, although the above shows a scheme of using a housing combined with a first shell and a second shell, and arranging a slope section on the first shell to abut against the shell cover to achieve the unscrewing reminder, the present disclosure does not limit the actual structure of the housing. The slope section can be arranged on the second shell, and a positioning member or a groove corresponding thereto can be arranged on the shell cover, or the shell can comprise more parts, or the parts of the shell can move relative to each other, or only one housing part can be arranged, etc.

[0097] Thus, the detection assembly can remind the user of the operation direction when the housing assembly 90 and the cover 80 are rotated relative to each other and separated in the first direction, and the protective shell 30 and the needle 20 are separated at the same time when the user separates the housing assembly 90 and the cover 80 in the first direction. By the mutual abutment between the inclined section 103 and the positioning member 104 in the first direction, the user is prompted to move the cover 80 in the first direction, thereby separating the protective shell 30 and the needle 20, so that the operation of releasing the sealing part of the emitter assembly by the applicator becomes more convenient and intuitive, and the user is prevented from damaging the sealing of the emitter assembly 100 due to misoperation of reverse rotation.

[0098] Referring to FIG. 12 and FIG. 13, FIG. 13 shows an exemplary exploded view of the detection assembly of some embodiments of the present disclosure. The cover 80 is further provided with a protective shell locking portion for placing or removing the protective shell 30, which can include at least two lateral clamps 84. The two lateral clamps 84 can include a clamp body 84a extending upward from the central portion of the bottom surface of the cover 80, and the top end of the extending portion of the clamp body 84a is provided with a clamp portion 84b protruding radially inward, and the radially inward end surface of the clamp portion 84b is used to abut the side surface of the protective shell 30. The radially inward end surface of the clamp portion 84b can be provided to match the shape of the radially outer peripheral surface of the protective shell 30 to better position it.

[0099] The circumferential side surface portion of the protective shell 30 is further provided with a radially extending positioning plane 30a, which can abut the positioning side surface 84d of the clamp portion 84b, so that the protective shell 30 can be clamped by the clamp portion 84b at least in the form of single-direction anti-rotation. Those skilled in the art can understand that although the above describes a radially extending positioning plane along the circumferential side surface of the protective shell 30, the present disclosure does not limit the form of the positioning structure on the outer side of the protective shell 30. Alternatively, the positioning plane 30a can also be provided to form a certain angle with the radial direction, which can be inclined towards the circumferential outer surface of the protective shell 30. Correspondingly, the positioning side surface 84d of the clamp portion 84b of the 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 surface 84d can match each other. Thus, when the positioning side surface 84d of the clamp portion 84b and the positioning plane 30a are rotated and cooperated, the lateral corner of the clamp portion 84d can be at least partially rotated into the angle space formed by the positioning plane 30a and the other side surface portion of the protective shell 30, and form a ratchet and pawl type engagement therewith. Thus, the positioning side surface 84d and the positioning plane 30a can form a self-locking to prevent the lateral clamp 84 from deforming and unlocking when subjected to too much force.

[0100] Referring to FIG. 14, FIG. 14 shows an example perspective view of the detection assembly of some embodiments of the present disclosure, in which the shell cover and the protective shell are hidden for clear representation of the internal structure. The transmitter 1 forms a rotation-preventing fit with the housing assembly 90. Specifically, the interior of the housing 91 can be provided with a circumferential positioning member 901, which can include a plurality of circumferential positioning blocks 902 extending in a first direction from the shell cover 80, the plurality of circumferential positioning blocks 902 being arranged in abutment with the transmitter 1 along the circumferential outer side of the transmitter 1 and in abutment with the transmitter 1 in the circumferential direction. Thus, the end surface of the plurality of circumferential positioning blocks 902 in abutment with the transmitter 1 forms a form fit with the transmitter 1, so that the circumferential positioning member 901 forms a rotation-preventing fit with the transmitter 1. Since the needle 20 forms a rotation-preventing fit with the transmitter 1, the needle 20 can be rotationally prevented from being arranged in the housing assembly 90 by further forming a rotation-preventing connection between the circumferential positioning member 901 and the housing 91 via a bracket or other intermediate component.

[0101] As can be understood by those skilled in the art, the circumferential positioning blocks 902 can also be formed in other forms, and only one annular circumferential positioning block 902 matching the outer circumferential contour of the transmitter 1 can be provided, so that the transmitter 1 is arranged inside the positioning block 902 and connected in form fit with the inner wall thereof. Or at least one positioning recess recessed in the radial direction can be provided on the transmitter 1, and at least one circumferential positioning block 902 matching the shape of the positioning recess can be provided on the circumferential positioning member 901, so that the circumferential positioning block 902 is embedded in the positioning recess to limit the transmitter 1 in the rotational direction, and so on.

[0102] The working process of the detection assembly will be described below in conjunction with the drawings.

[0103] Referring to FIG. 1, FIG. 1 shows an example cross-sectional view of the detection assembly of some embodiments of the present disclosure, in which the detection assembly is in an initial state, in which the shell assembly is locked in a first direction relative to the shell cover, and the protective shell is locked in a first direction relative to the needle. When the detection assembly is not opened for use, the transmitter assembly 100 of the detection assembly is located inside the applicator, the needle 20 is clamped and 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 is locked in the first direction relative to the needle 20.

[0104] Referring to FIG. 15, which shows an exemplary cross-sectional view of the detection assembly of some embodiments of the present disclosure, illustrating the state of the protective shell being unlocked and removed from the needle after the rotation of the shell cover. After the shell cover 80 is twisted relative to the housing assembly 90, the positioning member 104 of the shell cover 80 is moved in rotation along the locking flange 106 of the second housing 130, and finally can be aligned with the release opening 107 at the bottom of the second housing 130 to move out in the vertical direction. At the same time, the side surface of the lateral clamping hook 84 of the shell cover 80 can abut against the positioning plane 30a of the protective shell, so that the protective shell 30 rotates together with the shell cover 80 until the positioning member 104 is aligned with the release opening 107.

[0105] As can be understood by those skilled in the art, the positioning plane 30a and the side surface of the lateral clamping hook 84 can abut in the first rotation direction and can be rotated apart in the opposite direction, i.e., a one-way anti-rotation connection is formed between the positioning plane 30a and the side surface of the lateral clamping hook 84. The circumferential outer side of the protective shell 30 and the lateral clamping hook 84 can be formed in a bidirectional anti-rotation connection in the rotation direction, 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 in the rotation direction can be provided to abut against the two radial protrusions, respectively, so that the protective shell 30 is completely positioned relative to the shell cover 80 in the rotation direction.

[0106] The positioning member 104 of the shell cover 80 is pushed by the slope section 103 in the first direction during rotation towards the release opening, so that the shell cover 80 as a whole is pushed in the direction away from the housing assembly 90, and the pushing force gradually reaches a maximum during the movement of the positioning member 104 to align with the release opening 107, and finally the slope section 103 pushes the shell cover 80 to move away from the housing assembly 90, so that the user can feel that the gap between the shell cover 80 and the housing assembly 90 in the first direction is getting larger. Thus, the user can be prompted to separate the shell cover 80 from the housing assembly 90 in the first direction. At the same time, the protective shell 30 is relatively horizontally rotated to be disengaged from the needle 20, and at this time the protective shell 30 can fall by gravity, and the lower part of the protective shell 30 can be received by the receiving hole formed by the upwardly protruding receiving side wall 85 and the lateral clamping hook 84 of the middle part of the shell cover 80. Thereafter, the protective shell 30 can be removed from the housing assembly 90 together with the shell cover 80 in the first direction. The radial end surface of the clamping portion 84b of the lateral clamping hook 84 of the shell cover 80 can cooperate with the shape of the side surface of the protective shell 30 to ensure that the protective shell remains vertical during rotation, reducing the risk of rotation being blocked due to the protective shell being tilted.

[0107] The protective shell 30 can further be provided with a downwardly inclined positioning surface 30b, which can be formed as a partial conical surface. The top end of the hook portion 84b near the inner radial side can be provided with a hook positioning surface 84c that is shaped to cooperate with the inclined positioning surface 30b. The hook positioning surface 84c can be used to guide the protective shell during assembly by cooperating with the inclined positioning surface 30b to ensure that the protective shell remains vertical during assembly. After the protective shell 30 is separated from the needle 20 and falls into the protective shell receiving cylinder 840, the hook positioning surface 84c abuts the inclined positioning surface 30b to receive and position the protective shell 30 when it falls vertically by virtue of the cooperation between the respective conical surfaces. Those skilled in the art will understand that the hook positioning surface 84c and the inclined positioning surface 30b can be formed in other shapes that can cooperate to automatically center, such as a circular arc surface, a spherical surface, etc.

[0108] The shell cover 80 can be configured to limit the protective shell 30 in the first direction. In this way, the protective shell 30 can be more stably retained in the shell cover 80, and external disturbances can be prevented from moving the protective shell 30 in the shell cover 80, thereby preventing damage or deformation of the protective shell 30, etc. Alternatively, the bottom side of the protective shell 30 can be provided with a sealing plug. In such cases, by virtue of the limitation of the protective shell 30 by the shell cover 80 when the detection assembly is in the shelf period, in a high-altitude low-pressure environment, or during vibration transportation, the sealing plug at the tail end of the protective shell can be prevented from falling off. The pre-set distance between the inner bottom surface of the shell cover and the bottom surface of the sealing plug of the protective shell 30 can be set by adjusting the size of the shell cover in the first direction. The pre-set distance can be set to ensure that the sealing plug and the bottom surface of the shell cover 80 are in clearance fit during the normal shelf period. When the sealing plug moves downward or deforms under the condition 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 pre-set distance can be determined according to the limit of the length of the sealing plug after installation, which can maintain the sealing effect when it falls off in the first direction.

[0109] The detection assembly according to some embodiments of the present disclosure can be configured to allow the protective shell 30 and the needle 20 provided on the outer shell assembly 90 and the shell cover 80, respectively, to be disconnected by relative rotation and separation of the outer shell assembly 90 and the shell cover 80, which is simple and intuitive to operate. Since the relative rotation between the shell cover 80 and the outer shell assembly 90 is a simple rotation in the 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 outer shell assembly 90, which ensures the horizontal degree of the rotation action and prevents the protective shell 30 and the needle 20 from being inclined or axially fluctuated due to improper operation, thereby preventing damage to related devices.

[0110] While several embodiments of the disclosure have been shown and described herein, it is to be understood that the embodiments are merely exemplary. Numerous changes, substitutions and equivalents can occur to those skilled in the art without departing from the spirit and scope of the disclosure. It should be understood that various alternatives to the embodiments of the disclosure described herein can be employed in practicing the disclosure. It is intended that the following claims define the scope of the disclosure and that methods equivalent to those shown and described herein can be utilized without departing from the spirit and scope of the disclosure.

Claims

1. A detection assembly comprising: include: The transmitter assembly includes a needle and a protective shell, the protective shell and the needle being rotatably engaged relative to each other to lock relative to each other in a first direction; as well as An applicator includes a housing assembly and a cover that is locked to the housing assembly in a first direction, the housing and the cover being connected to each other in at least one-way anti-rotational manner; When the cover is screwed relative to the outer casing assembly, the cover drives the protective shell to rotate relative to the needle to disengage from the needle, thereby enabling separation from the needle along a first direction.

2. The transmitter assembly of claim 1, wherein, The cover is unlocked at least partially relative to the outer shell assembly without displacement in a first direction to drive the protective shell to rotate horizontally, thereby unlocking the protective shell relative to the needle in the first direction.

3. The detection assembly of claim 1 or 2, wherein, The bottom of the outer casing assembly is provided with a ramp section, and the axial end of the upper part of the cover is provided with a positioning member. When the cover is screwed through the ramp section, the ramp section pushes the positioning member against the first direction, which is used to indicate that after continuing to screw, the cover and the outer casing assembly will separate along the first direction.

4. The detection assembly of any one of claims 1 to 3, wherein, The cover also includes a lateral hook, which includes a hook portion protruding radially inward. The radially inward end face of the hook portion is used to abut against the outer surface of the protective shell. The positioning side of the hook portion abuts against at least one positioning plane of the protective shell to limit the protective shell in the rotation direction.

5. The detection assembly of claim 4, wherein, The positioning plane can also be set to be inclined toward the outer surface of the protective shell to form an angled space with the outer surface of the protective shell, and the positioning side of the hook portion is formed to match the inclination angle of the positioning plane, so that the lateral corner of the hook portion can be rotated and moved into the angled space at least partially, so that the positioning side is engaged with the positioning plane.

6. The detection assembly of claim 4 or 5, wherein, The needle is provided with at least one stop block, and the protective shell is provided with at least one locking block. After the needle and the protective shell are horizontally rotated and engaged, the stop block and the locking block can abut against each other in a first direction to prevent the needle and the protective shell from separating relative to each other in the first direction.

7. The detection assembly of claim 6, wherein, The blocking block includes an upper abutment surface, and the locking member includes a lower abutment surface corresponding to the upper abutment surface. The upper abutment surface and the lower abutment surface are formed to automatically center and engage with each other. The blocking block and the locking block abut against each other by means of the contact between the upper abutment surface and the lower abutment surface.

8. The detection assembly of claim 6 or 7, wherein, The needle includes at least two stop blocks that are angularly spaced around the axis of the needle.

9. The detection assembly of claim 3, wherein, The positioning element includes a locking groove extending radially, and the transmitter assembly includes a housing including a locking flange projecting radially inward, the locking flange engaging with the locking groove to lock the housing cover in a first direction.

10. The detection assembly of claim 3, wherein, The outer casing assembly includes a first casing and a second casing that are interlocked, with the ramp section located at the bottom end of the first casing.

11. The detection assembly of any one of claims 1 to 10, wherein, The transmitter assembly includes a transmitter, with the needle and the protective shell disposed on both sides of the transmitter.

12. The detection assembly of claim 11, wherein, The transmitter comprises a shell and a detection device arranged inside the shell, the shell has a shell channel penetrating through the shell in the vertical direction, and the detection device comprises a detection needle extending downward in the vertical direction and protruding from the shell.

13. The detection assembly of claim 12, wherein, The needle comprises a puncture needle used to assist the detection needle, and the protective shell surrounds and seals the puncture needle and the detection needle.

14. The detection assembly of claim 12, wherein, The detection device comprises a control circuit board, one end of the detection needle is electrically connected to the control circuit board, the other end extends into the shell channel, extends to the lower side of the transmitter in the vertical direction, and protrudes from the lower surface of the shell, and the control circuit board is used for processing and transmitting detection parameters of the detection needle.

15. The detection assembly of any one of claims 12 to 14, wherein, The transmitter further comprises a sticking member, one side of the sticking member is fixedly connected to the lower side of the shell, and the other side is provided with an adhesive substance.

16. The detection assembly of any one of claims 12 to 14, wherein, The shell comprises an upper shell, a lower shell and an auxiliary limiting member, the upper shell and the lower shell are buckled to each other, the auxiliary limiting member is arranged between the upper shell and the lower shell, and the upper shell, the lower shell and the auxiliary limiting member jointly enclose an assembly cavity for accommodating the detection device.

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