Sealing device and sensing device

Abstract

The invention discloses a sealing device and a sensing device. The sealing device comprises a mounting seat, a needle assembly, a sensor and a cap assembly, the mounting base is provided with a first through hole and a second through hole, the first through hole penetrates through the mounting base, and the second through hole is communicated with the first through hole. The needle assembly comprises a needle base and a needle body connected with the needle base, the needle base penetrates through the first through hole in a pluggable mode, the needle body is exposed out of the installation base, and the needle body is of a half-wrapping structure. The sensor comprises a body part, an inserting part and a connecting part, the body part is arranged on the mounting base, the inserting part is located in the semi-wrapping structure of the needle body, and the connecting part penetrates through the second through hole and is connected between the body part and the inserting part. The cap assembly is detachably connected with the mounting seat or the needle seat and is provided with a containing cavity, and the needle body is arranged in the containing cavity in a penetrating mode. And the mounting seat, the needle seat, the sensor and the cap assembly are enclosed to form a sealed cavity for accommodating the needle body. The sealing device can enable the sensing device to have the advantages of being safe and convenient to use, reducing packaging materials, shortening packaging time and reducing packaging cost.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a sealing device and a sensing device. Background Technology

[0002] Diabetes and its chronic complications have become one of the most serious diseases affecting human health today. To delay and reduce the progression of these complications, strict glucose control is necessary. Therefore, continuous glucose monitoring systems (CGMS), which dynamically reflect glucose fluctuations, are widely used. A CGMS includes a sensor device. During use, the sensor's mounting base is fixed to the user's skin. A portion of the sensor is implanted in the user's subcutaneous tissue to monitor changes in glucose concentration in the interstitial fluid in real time. The glucose concentration information detected by the sensor is transmitted to the user's terminal, such as a mobile phone, via a circuit board assembly located inside the mounting base, allowing the user to monitor their blood sugar levels in real time.

[0003] Sensors implanted under the user's skin must be sterile during insertion, thus requiring sterilization to effectively eliminate or kill transmissible agents such as bacteria, fungi, and viruses. Common sterilization methods include electron beam sterilization and ethylene oxide sterilization. Electron beam sterilization can damage the circuit board assembly of the sensor, affecting its normal function. While ethylene oxide sterilization uses gaseous chemical sterilization to sterilize the circuit board assembly, ethylene oxide can affect the activity of chemicals in the sensor. Therefore, current technology typically involves sterilizing the sensor and circuit board assembly separately and then packaging them individually. However, this sterilization method requires additional assembly for user use, causing inconvenience. Furthermore, separate sterilization and packaging of the sensor and circuit board assembly increases both packaging materials and time, resulting in higher packaging costs. Summary of the Invention

[0004] In view of this, the present invention proposes a sealing device and a sensing device.

[0005] The sealing device according to the first aspect of the present invention includes:

[0006] The mounting base is provided with a first through hole and a second through hole, the first through hole penetrating the mounting base and the second through hole communicating with the first through hole;

[0007] A needle assembly, comprising a needle hub and a needle body connected to the needle hub, wherein the needle hub is pluggably disposed in the first through hole, the needle body is exposed in the mounting base, and the needle body has a semi-enclosed structure;

[0008] The sensor includes a body, an insertion part, and a connecting part. The body is disposed on the mounting base, the insertion part is located within the semi-enclosed structure of the needle body, and the connecting part passes through the second through hole and connects the body and the insertion part.

[0009] A cap assembly, which is detachably connected to the mounting base or the needle hub, has a receiving cavity in which the needle body passes through;

[0010] The mounting base, the needle holder, the sensor, and the cap assembly together form a sealed cavity for accommodating the needle.

[0011] The sensing device according to the second aspect of the present invention includes:

[0012] The mounting base is provided with a first through hole and a second through hole, the first through hole penetrating the mounting base and the second through hole communicating with the first through hole;

[0013] A housing is connected to the mounting base and surrounds the mounting base to form an inner cavity. The housing is provided with a third through hole, which is disposed opposite to the first through hole. The second through hole connects the inner cavity and the first through hole.

[0014] A needle assembly, comprising a needle base and a needle body connected to the needle base, wherein the needle base is pluggably disposed through the third through hole and the first through hole, the needle body is exposed outside the mounting base, and the needle body has a semi-enclosed structure;

[0015] A circuit board assembly disposed within the cavity;

[0016] The sensor includes a body, an insertion part, and a connecting part. The body is disposed in the inner cavity and electrically connected to the circuit board assembly. The insertion part passes through the first through hole and is at least partially exposed in the mounting base. The connecting part passes through the second through hole and connects the body and the insertion part.

[0017] A cap assembly is detachably connected to the mounting base or the needle seat, and the cap assembly has a receiving cavity in which the needle body passes.

[0018] As can be seen from the above technical solution, the sealing device proposed in the first aspect of this invention, firstly, by setting up a mounting base, needle holder, sensor, and cap assembly to form a sealed cavity for accommodating the needle, can effectively block bacteria, preventing bacterial contamination of the needle and ensuring the safe use of the sensing device using this sealing device. Secondly, because the sealed cavity formed by the mounting base, needle holder, sensor, and cap assembly blocks bacteria, after sterilization and assembly, the sterilized circuit board assembly can be assembled into the inner cavity of the mounting base without contaminating the needle during the assembly process. Furthermore, since the circuit board assembly can be pre-assembled into the mounting base, users do not need to separately install the circuit board assembly when using the sensing device, improving the convenience of use. Moreover, because the circuit board assembly can be pre-assembled into the mounting base, only the entire sensing device needs to be packaged once during packaging, eliminating the need for separate packaging of the circuit board assembly, reducing packaging materials and time, and lowering packaging costs. Finally, the sensing device proposed in this embodiment is small in size, which reduces the area and volume that need to be sterilized. In a sterilization container of the same area and volume, more items can be sterilized, thereby reducing the cost of sterilization. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a sensing device proposed in an embodiment of the present invention;

[0021] Figure 2 This is an exploded schematic diagram of a sensing device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the cooperation between the first housing and the sensor according to an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional schematic diagram of a partial structure of a sensing device according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the needle assembly and sensor proposed in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the needle body according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the second shell proposed in an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the needle holder structure according to an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of the cap assembly and the second flexible ring according to an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the structure of the first housing from the bottom view according to an embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram of the sealing plug proposed in an embodiment of the present invention. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention.

[0032] like Figures 1 to 5 As shown, an embodiment of the present invention proposes a sealing device 100 applied to a sensing device. This sensing device is used to monitor the glucose concentration of a user's subcutaneous interstitial fluid in real time to provide feedback on the user's blood glucose level. Of course, this sensing device is not limited to monitoring the glucose concentration of a user's subcutaneous interstitial fluid; it can also be used to monitor the concentration of other components in the user's subcutaneous interstitial fluid, depending on actual design requirements.

[0033] The proposed sealing device 100 includes a mounting base 10, a needle assembly 20, a sensor 40, and a cap assembly 50. The mounting base 10 has a first through hole 10b and a second through hole 10c. The first through hole 10b penetrates the mounting base 10, and the second through hole 10c communicates with the first through hole 10b. The needle assembly 20 includes a needle seat 21 and a needle body 22 connected to the needle seat 21. The needle seat 21 is pluggably inserted into the first through hole 10b, and the needle body 22 is exposed outside the mounting base 10, having a semi-enclosed structure. The sensor 40 includes a body portion 41, an insertion portion 42, and a connecting portion 43. The body portion 41 is disposed on the mounting base 10, the insertion portion 42 is located within the semi-enclosed structure of the needle body 22, and the connecting portion 43 passes through the second through hole 10c and connects the body portion 41 and the insertion portion 42. The cap assembly 50 is detachably connected to the mounting base 10 or the needle holder 21. The cap assembly 50 has a receiving cavity 50a, in which the needle body 22 passes. The mounting base 10, the needle holder 21, the sensor 40, and the cap assembly 50 together form a sealed cavity for accommodating the needle body 22.

[0034] In use, the user removes the cap assembly 50 and then inserts the needle body 22 into the subcutaneous tissue. Since the insertion part 42 of the sensor 40 is located within the semi-enclosed structure of the needle body 22, the insertion part 42 of the sensor 40 follows the needle body 22 into the subcutaneous tissue. Then the user pulls out the needle assembly 20, leaving the insertion part 42 of the sensor 40 inside the subcutaneous tissue to monitor the concentration of the required components in the user's subcutaneous interstitial fluid in real time.

[0035] The sealing device 100 proposed in this embodiment of the invention firstly, by setting up a mounting base 10, needle holder 21, sensor 40, and cap assembly 50 to form a sealed cavity for accommodating the needle body 22, it can effectively block bacteria, preventing bacterial contamination of the needle body 22 and ensuring the safe use of the sensing device using the sealing device 100. Secondly, because the sealed cavity formed by the mounting base 10, needle holder 21, sensor 40, and cap assembly 50 has a bacterial barrier effect, after sterilization and assembly, the sterilized circuit board assembly 30 can be assembled into the inner cavity of the mounting base 10 without contaminating the needle body 22 during the assembly of the circuit board assembly 30 into the mounting base 10. Furthermore, since the circuit board assembly 30 can be pre-assembled into the mounting base 10, the user does not need to separately install the circuit board assembly 30 when using the sensing device, improving the convenience of using the sensing device. Furthermore, since the circuit board assembly 30 can be pre-assembled into the mounting base 10, only the entire sensing device needs to be packaged once during packaging, eliminating the need for separate packaging of the circuit board assembly 30. This reduces packaging materials and time, thereby lowering packaging costs. Finally, the sensing device proposed in this embodiment is small in size, reducing the area and volume requiring sterilization. This allows for the sterilization of a larger number of devices within the same area and volume of the sterilization container, thus reducing sterilization costs.

[0036] Of course, in some other embodiments, the circuit board assembly 30 may not be pre-assembled to the mounting base 10, and the circuit board assembly 30 may be assembled separately when the user needs to use the sensing device. The specific arrangement may vary depending on the actual design requirements.

[0037] like Figure 6 As shown, in some embodiments, the needle body 22 includes a main body 221, a neck 222, and a head 223 connected in sequence, wherein the main body 221 is used for insertion into the user's subcutaneous tissue, and the neck 222 is used for connection with the needle hub 21. In some embodiments, the main body 221, neck 222, and head 223 are integrally stamped from a sheet metal.

[0038] like Figure 6 As shown, in some embodiments, the main body 221 includes a base plate 2211, a first side wing 2212 and a second side wing 2213. The end of the base plate 2211 is configured as a needle tip 2214. The first side wing 2212 and the second side wing 2213 are respectively disposed on opposite sides of the base plate 2211 and are disposed opposite to each other. The base plate 2211, the first side wing 2212 and the second side wing 2213 together enclose to form the above-mentioned semi-enclosed structure.

[0039] like Figure 2 and Figure 3As shown, in some embodiments, the mounting base 10 includes a base body 11 and a first surrounding wall 13. The base body 11 includes a first side 11a and a second side 11b opposite to the first side 11a, and a first through hole 10b penetrates the base body 11. The first surrounding wall 13 is disposed on the first side 11a of the base body 11 and surrounds the first through hole 10b. The pin seat 21 is sealed to the first surrounding wall 13, and at least a portion of the second through hole 10c is disposed in the first surrounding wall 13. Optionally, the base body 11 and the first surrounding wall 13 are integrally formed; for example, in one embodiment, the base body 11 and the first surrounding wall 13 are integrally injection molded. In some embodiments, the second through hole 10c is partially disposed in the first surrounding wall 13 and partially disposed in the base body 11.

[0040] like Figure 4 As shown, in some embodiments, the first enclosure 13 includes a first flexible ring 131, and the needle seat 21 is a rigid component. The needle seat 21 abuts against the first flexible ring 131 in the direction in which the needle seat 21 is inserted into the first through hole 10b. The needle seat 21 achieves a sealed connection with the first enclosure 13 by compressing the first flexible ring 131. The first flexible ring 131 may be, but is not limited to, made of thermoplastic polyurethane elastomer (TPU) or silicone.

[0041] It should be noted that the seal between the first enclosure wall 13 and the needle seat 21 is not limited to the structure described above. For example, in some other embodiments, the first enclosure wall 13 includes a first flexible ring 131, the needle seat 21 is a rigid component, the needle seat 21 passes through the first flexible ring 131, and the needle seat 21 is press-fitted with the first flexible ring 131. The needle seat 21 achieves a sealed connection with the first enclosure wall 13 through the press-fit with the first flexible ring 131.

[0042] It should be noted that the seal between the first enclosure 13 and the needle seat 21 is not limited to the structure described above. For example, in some other embodiments, such as... Figure 4 and Figure 5 As shown, the first enclosure 13 is a rigid component, and the needle holder 21 includes a flexible portion 211. The first enclosure 13 abuts against the flexible portion 211 in the direction in which the needle holder 21 is inserted into the first through hole 10b. The first enclosure 13 achieves a sealed connection with the needle holder 21 by compressing the flexible portion 211. The flexible portion 211 may be, but is not limited to, made of thermoplastic polyurethane elastomer (TPU) or silicone.

[0043] It should be noted that the seal between the first enclosure wall 13 and the needle seat 21 is not limited to the structure described above. For example, in some other embodiments, the first enclosure wall 13 is a rigid component, and the needle seat 21 includes a flexible portion 211 that passes through the first enclosure wall 13 and is press-fitted with the first enclosure wall 13. The first enclosure wall 13 achieves a sealed connection with the needle seat 21 through the press-fit with the flexible portion 211.

[0044] like Figure 4 As shown, in some embodiments, the first enclosure 13 includes a first surrounding portion 132 and a first flexible ring 131. The first surrounding portion 132 surrounds the periphery of the first through hole 10b and is connected to the seat body 11. The first surrounding portion 132 has an opening and is made of rigid material. The first flexible ring 131 is connected to the first surrounding portion 132, and the first flexible ring 131 and the first surrounding portion 132 enclose each other at the opening to form a second through hole 10c. The needle seat 21 abuts against the first flexible ring 131 in the direction in which it is inserted into the first through hole 10b, or the needle seat 21 passes through the first flexible ring 131, and the needle seat 21 and the first flexible ring 131 are press-fitted.

[0045] In some embodiments, the first surrounding portion 132 is integrally formed with the seat body 11.

[0046] In some embodiments, the first flexible ring 131 is connected to the first surrounding portion 132 by secondary injection molding or two-color injection molding. Of course, the first flexible ring 131 is not limited to being connected to the first surrounding portion 132 by secondary injection molding or two-color injection molding. For example, in some other embodiments, the first flexible ring 131 and the first surrounding portion 132 are separately provided, and the first flexible ring 131 is connected to the first surrounding portion 132 by mechanical coupling.

[0047] like Figure 3 As shown, in some embodiments, the sidewall of the second through-hole 10c is sealed with adhesive. This implementation provides a better seal, preventing bacteria from entering the sealed cavity formed by the mounting base 10, needle seat 21, sensor 40, and cap assembly 50 through the second through-hole 10c and contaminating the needle body 22. Of course, the seal between the sidewall of the second through-hole 10c and the connecting portion 43 may not be adhesive-sealed. For example, in other embodiments, the size of the second through-hole 10c is adapted to the size of the connecting portion 43, so that when the connecting portion 43 is embedded in the second through-hole 10c, it precisely seals the second through-hole 10c to form a seal.

[0048] like Figure 2 and Figure 9 As shown, in some embodiments, the sealing device 100 further includes a second flexible ring 60 sandwiched between the mounting base 10 and the cap assembly 50 to form a seal between the mounting base 10 and the cap assembly 50. The second flexible ring 60 may be, but is not limited to, made of thermoplastic polyurethane elastomer (TPU) or silicone.

[0049] like Figure 8 and Figure 9As shown, in some embodiments, the needle holder 21 includes an assembly portion 212, which is exposed outside the mounting base 10, and the cap assembly 50 is rotatably snapped into the assembly portion 212. It should be noted that the cap assembly 50 is not limited to being configured to rotatably snap into the assembly portion 212. For example, in some other embodiments, the cap assembly 50 may also be configured to rotatably snap into the mounting base 10, depending on the actual design requirements.

[0050] like Figure 8 As shown, in some embodiments, the needle hub 21 further includes an operating portion 213, a shaft portion 214, and a sealing portion 215. The shaft portion 214 is connected between the operating portion 213 and the sealing portion 215, and the assembly portion 212 is connected to the side of the sealing portion 215 opposite to the shaft portion 214. The user performs insertion and removal operations on the needle assembly 20 by pinching the operating portion 213. The sealing portion 215 is used to form a sealed connection with the first enclosure wall 13 described above. In some embodiments, the outer diameter of the sealing portion 215 is larger than the outer diameter of the assembly portion 212, so that a step is formed at the connection between the sealing portion 215 and the assembly portion 212. The sealing portion 215 abuts against the first flexible ring 131 of the first enclosure wall 13 through this step to achieve a sealed connection with the first enclosure wall 13.

[0051] like Figure 8 and Figure 9 As shown, in some embodiments, the outer side wall of the assembly part 212 is provided with a slot 2121, and the inner side wall of the cap assembly 50 is provided with a protrusion 51. The protrusion 51 extends obliquely relative to the direction in which the pin seat 21 is inserted into the first through hole 10b, and the protrusion 51 is embedded in the slot 2121.

[0052] During the assembly process, the operator places the cap assembly 50 onto the assembly part 212 and then rotates the cap assembly 50. During the rotation, the protrusion 51 is inserted into the slot 2121, and the protrusion 51 pulls the assembly part 212 in the direction in which the needle seat 21 is inserted into the first through hole 10b. The sealing part 215 of the needle seat 21 gradually presses the first flexible ring 131 of the first enclosure wall 13.

[0053] like Figure 8 and Figure 9As shown, in some embodiments, the cross-sectional profile of the assembly part 212 is racetrack-shaped, and the inner sidewall of the cap assembly 50 is also provided with a stop part 52. The stop part 52 is located below the protrusion 51 and is used to abut against the assembly part 212 to prevent the cap assembly 50 from automatically rotating and falling off without external force. Of course, the stop part 52 can also be located above the protrusion 51, depending on the actual design requirements. It should also be noted that the cross-sectional profile of the assembly part 212 is not limited to a racetrack shape; it can also be other shapes, as long as the stop part 52 can abut against the assembly part 212 and prevent the cap assembly 50 from automatically rotating and falling off without external force.

[0054] like Figure 9 and Figure 10 As shown, in some embodiments, the mounting base 10 is provided with a positioning groove 17, and the cap assembly 50 is provided with a positioning protrusion 53. The positioning protrusion 53 is embedded in the positioning groove 17 to restrict relative movement between the cap assembly 50 and the mounting base 10 in a second direction, which is perpendicular to the direction in which the needle seat 21 is inserted into the first through hole 10b. It should be noted that the positions of the positioning groove 17 and the positioning protrusion 53 can be interchanged; that is, the positioning groove 17 can be located on the cap assembly 50, and the positioning protrusion 53 can be located on the mounting base 10. The specific arrangement can be determined according to actual design needs. Understandably, since the cap assembly 50 needs to rotate when installed on the mounting base 10, the width of the positioning groove 17 in the rotation direction of the cap assembly 50 is greater than the width of the positioning protrusion 53 in the rotation direction of the cap assembly 50.

[0055] like Figure 9 and Figure 10 As shown, in some embodiments, the number of positioning grooves 17 and positioning protrusions 53 is four. Of course, the number of positioning grooves 17 and positioning protrusions 53 is not limited to four; it can also be one, two, three, five, or more, depending on the actual design requirements.

[0056] As shown in the figure, in some embodiments, the outer side wall of the cap assembly 50 is provided with a protruding ridge 54. In this embodiment, by providing the protruding ridge 54, the user has a support point when rotating to open the cap assembly 50, thereby facilitating the removal of the cap assembly 50.

[0057] In some embodiments, the number of protruding ribs 54 is two, and the two protruding ribs 54 are spaced apart on the outer side wall of the cap assembly 50. Of course, the number of protruding ribs 54 is not limited to two, and can also be one, three or more, depending on the actual design requirements.

[0058] like Figure 9As shown, in some embodiments, the cap assembly 50 includes a cylindrical portion 55 and a sealing plug 56. One end of the cylindrical portion 55 is detachably connected to the mounting base 10 or the pin seat 21, and the sealing plug 56 is sealingly connected to the other end of the cylindrical portion 55. In this embodiment, the cylindrical portion 55 and the sealing plug 56 can be molded independently, reducing manufacturing difficulty. Of course, the cap assembly 50 can also be configured as a one-piece molded component, depending on the actual design requirements.

[0059] like Figure 9 As shown, in some embodiments, the cylindrical portion 55 includes a cylindrical portion 551 and an annular portion 552. The annular portion 552 is disposed around the outer side wall of the cylindrical portion 551 and spaced apart from the end face of the cylindrical portion 551 facing the mounting base 10 to form a step. A second flexible ring 60 is sleeved on the cylindrical portion 551 and abuts against the annular portion 552. When the cap assembly 50 is installed on the mounting base 10, the annular portion 552 directs the second flexible ring 60 toward the mounting base 10 to achieve a connection between the mounting base 10 and the cap assembly 50.

[0060] like Figure 9 As shown, in some embodiments, the positioning protrusion 53 is provided on the end face of the cylindrical portion 551 facing the mounting base 10.

[0061] like Figure 9 As shown, in some embodiments, the outer side wall of the cylindrical portion 551 is provided with a limiting protrusion 5511, and the inner side wall of the second flexible ring 60 is provided with a limiting groove 61. The limiting protrusion 5511 is embedded in the limiting groove 61 to restrict the rotation of the second flexible ring 60.

[0062] like Figure 11 As shown, in some embodiments, the sealing plug 56 includes an embedding portion 561 and an abutting portion 562. The embedding portion 561 is embedded inside the cylindrical portion 55, and the abutting portion 562 is connected to the embedding portion 561. The abutting portion 562 is located outside the cylindrical portion 55 and abuts against the end face of the cylindrical portion 55.

[0063] like Figures 1 to 11As shown, an embodiment of the present invention also proposes a sensing device, which includes a mounting base 10, a needle assembly 20, a circuit board assembly 30, a sensor 40, a cap assembly 50, and a housing 70. The mounting base 10 is provided with a first through hole 10b and a second through hole 10c. The first through hole 10b penetrates the mounting base 10, and the second through hole 10c communicates with the first through hole 10b. The housing 70 is connected to the mounting base 10 and surrounds the mounting base 10 to form an inner cavity 10a. The housing 70 is provided with a third through hole 71, which is opposite to the first through hole 10b. The second through hole 10c communicates with the inner cavity 10a and the first through hole 10b. The needle assembly 20 includes a needle seat 21 and a needle body 22 connected to the needle seat 21. The needle seat 21 is pluggably inserted through the third through hole 71 and the first through hole 10b. The needle body 22 is exposed outside the mounting base 10 and has a semi-enclosed structure. The circuit board assembly 30 is disposed in the inner cavity 10a of the mounting base 10. The sensor 40 includes a body portion 41, an insertion portion 42, and a connecting portion 43. The body portion 41 is disposed in the inner cavity 10a and electrically connected to the circuit board assembly 30. The insertion portion 42 passes through a first through hole 10b and is at least partially exposed outside the mounting base 10. The connecting portion 43 passes through a second through hole 10c and connects the body portion 41 and the insertion portion 42. The cap assembly 50 is detachably connected to the mounting base 10 or the needle holder 21. The cap assembly 50 has a receiving cavity 50a, in which the needle body 22 passes.

[0064] This invention provides a sensing device where, since the circuit board assembly 30 is pre-assembled onto the mounting base 10, the user does not need to separately install the circuit board assembly 30 when using the sensing device, thus improving the ease of use. Furthermore, because the circuit board assembly 30 is pre-assembled onto the mounting base 10, only the entire sensing device needs to be packaged once during packaging, eliminating the need for separate packaging of the circuit board assembly 30. This reduces packaging materials and time, thereby lowering packaging costs. Finally, the sensing device proposed in this embodiment requires a smaller sterilization area and volume, allowing for the sterilization of a greater number of devices within the same sterilization container area and volume, thus reducing sterilization costs.

[0065] In some embodiments, the circuit board assembly 30 includes a circuit board, a processor, a battery, and a data transmitter, all of which are electrically connected to the circuit board. The battery provides the electrical energy required for the sensing device to operate, and the data transmitter transmits the data detected by the sensor to a terminal, such as a mobile phone or tablet computer.

[0066] In some embodiments, the sensor 40 includes a body 41 having a plurality of contacts, all of which are electrically connected to the circuit board assembly 30. This embodiment improves the reliability of the connection between the sensor 40 and the circuit board assembly 30.

[0067] like Figure 3As shown, in some embodiments, the mounting base 10 has a second enclosure 14 surrounding the first enclosure 13 on the side facing the housing 70. The second enclosure 14 has a first notch 141, and the connection portion 43 of the sensor 40 is engaged with the first notch 141. The first notch 141 can provide a fixed support for the connection portion 43 of the sensor 40.

[0068] like Figure 3 As shown, in some embodiments, the mounting base 10 is provided with a support structure 16 on the side facing the housing 70. The support structure 16 is provided with a second notch 161. The body part 41 of the sensor 40 is engaged in the second notch 161. The support structure 16 supports the body part 41 of the sensor 40.

[0069] like Figure 4 and Figure 7 As shown, in some embodiments, a third enclosure wall 15 is provided on the side of the housing 70 facing the mounting base 10. The third enclosure wall 15 is arranged around the third through hole 71 and is embedded between the first enclosure wall 13 and the second enclosure wall 14.

[0070] The structure, connection relationship, extended description and beneficial effects of other components of the sensing device proposed in this embodiment can be referred to the above embodiment, and will not be repeated here.

[0071] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A sealing device, characterized in that, include: The mounting base has a first through hole and a second through hole, the first through hole penetrating the mounting base and the second through hole communicating with the first through hole; A needle assembly, comprising a needle hub and a needle body connected to the needle hub, wherein the needle hub is pluggably disposed in the first through hole, the needle body is exposed in the mounting base, and the needle body has a semi-enclosed structure; The sensor includes a body, an insertion part, and a connecting part. The body is disposed on the mounting base, the insertion part is located within the semi-enclosed structure of the needle body, and the connecting part passes through the second through hole and connects the body and the insertion part. A cap assembly, which is detachably connected to the mounting base or the needle hub, has a receiving cavity in which the needle body passes through; The mounting base, the needle holder, the sensor, and the cap assembly together form a sealed cavity for accommodating the needle.

2. The sealing device as claimed in claim 1, characterized in that, The mounting base includes: The seat body includes a first side and a second side opposite to the first side, and the first through hole penetrates the seat body; A first enclosure wall is disposed on the first side of the seat body and surrounds the first through hole. The needle seat is sealed to the first enclosure wall, and at least part of the second through hole is disposed in the first enclosure wall.

3. The sealing device as described in claim 2, characterized in that, The first enclosure includes a first flexible ring, the needle seat is a rigid component, and the needle seat abuts against the first flexible ring in the direction in which the needle seat is inserted into the first through hole; or, The first enclosure includes a first flexible ring, the needle holder is a rigid component, the needle holder passes through the first flexible ring, and the needle holder and the first flexible ring are interference-fitted; or, The first enclosure is a rigid component, and the needle holder includes a flexible portion. The first enclosure abuts against the flexible portion in the direction in which the needle holder is inserted into the first through hole. or, The first enclosure is a rigid component, and the needle seat includes a flexible portion that passes through the first enclosure and is interference-fitted with the first enclosure.

4. The sealing device as described in claim 2, characterized in that, The first enclosure includes: The first surrounding portion surrounds the periphery of the first through hole and is connected to the first housing. The first surrounding portion is provided with an opening. The first surrounding portion is a rigid first surrounding portion. A first flexible ring is connected to the first surrounding portion, and the first flexible ring and the first surrounding portion form a second through hole at the opening; Wherein, the needle seat abuts against the first flexible ring in the direction in which the needle seat is inserted into the first through hole, or the needle seat passes through the first flexible ring, and the needle seat and the first flexible ring are interference-fitted.

5. The sealing device as described in claim 4, characterized in that, The first flexible ring is connected to the first surrounding portion via secondary injection molding or two-color injection molding; or, The first flexible ring and the first surrounding part are separate, and the first flexible ring is connected to the first surrounding part by mechanical coupling.

6. The sealing device as claimed in claim 1, characterized in that, The sealing device further includes a second flexible ring sandwiched between the mounting base and the cap assembly to form a seal between the mounting base and the cap assembly.

7. The sealing device as claimed in claim 1, characterized in that, The needle holder includes an assembly portion exposed outside the mounting base, and the cap assembly is rotatably engaged with the assembly portion.

8. The sealing device as claimed in claim 7, characterized in that, The outer side wall of the assembly part is provided with a slot, and the inner side wall of the cap assembly is provided with a protrusion. The protrusion extends obliquely relative to the direction in which the needle seat is inserted into the first through hole, and the protrusion is embedded in the slot.

9. The sealing device as claimed in claim 7, characterized in that, One of the mounting base and the cap assembly is provided with a positioning groove, and the other of the mounting base and the cap assembly is provided with a positioning protrusion. The positioning protrusion is embedded in the positioning groove to restrict relative movement between the cap assembly and the mounting base in a second direction, the second direction being perpendicular to the direction in which the needle seat is inserted into the first through hole; and / or, The outer side wall of the cap assembly is provided with protruding ridges.

10. The sealing device as claimed in claim 1, characterized in that, The sidewall of the second through hole is sealed with adhesive; and / or, The cap assembly includes a cylindrical body and a sealing plug. One end of the cylindrical body is detachably connected to the mounting base or the needle seat, and the sealing plug is sealed to the other end of the cylindrical body.

11. A sensing device, characterized in that, include: The mounting base has a first through hole and a second through hole, the first through hole penetrating the mounting base and the second through hole communicating with the first through hole; A housing is connected to the mounting base and surrounds the mounting base to form an inner cavity. The housing is provided with a third through hole, which is disposed opposite to the first through hole. The second through hole connects the inner cavity and the first through hole. A needle assembly, comprising a needle base and a needle body connected to the needle base, wherein the needle base is pluggably disposed through the third through hole and the first through hole, the needle body is exposed outside the mounting base, and the needle body has a semi-enclosed structure; A circuit board assembly disposed within the cavity; The sensor includes a body, an insertion part, and a connecting part. The body is disposed in the inner cavity and electrically connected to the circuit board assembly. The insertion part passes through the first through hole and is at least partially exposed in the mounting base. The connecting part passes through the second through hole and connects the body and the insertion part. A cap assembly is detachably connected to the mounting base or the needle seat, and the cap assembly has a receiving cavity in which the needle body passes.

12. The sensing device as claimed in claim 11, characterized in that, The circuit board assembly includes a circuit board, a processor, a power supply, and a data transmitter. The processor, the power supply, and the data transmitter are all electrically connected to the circuit board. The power supply is used to provide the power required for the operation of the sensing device, and the data transmitter is used to send the data detected by the sensor to a terminal.

Images