Monitor and implantable sensor thereof

Abstract

The invention discloses a monitor and an implantable sensor thereof. The monitor comprises a shell assembly, the implantable sensor, a guide needle and a circuit board assembly. The implantable sensor is connected with the shell assembly, the guide needle is arranged on the shell assembly, and the guide needle is used for driving at least part of the implantable sensor to be inserted into a human body. The circuit board assembly is arranged on the shell assembly and is in signal connection with the implantable sensor. The implantable sensor comprises conductive layers, insulating layers and sacrificial layers, and the conductive layers and the insulating layers are alternately arranged. The implantable sensor has a connection region connected to the housing assembly, and the sacrificial layer is stacked on the connection region. When the implantable sensor is subjected to acting force due to human body movement and the like, the sacrificial layer is used for being damaged by the acting force before the adjacent position of the conductive layer and the insulating layer under the action of external force, so that the conductive layer is protected, and the probability that signal transmission is affected due to breakage of the conductive layer is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of implantable blood glucose monitoring, and in particular to a monitor and an implantable sensor thereof. Background Art

[0002] Diabetes can lead to numerous complications, including coma, poisoning, neuropathy, and cardiovascular and cerebrovascular disease. Therefore, diabetic patients need to know whether their glucose levels are within a safe range. However, traditional glucose measurement methods are cumbersome, require deep wounds, are painful, and can only measure a single value, making it difficult for diabetic patients to understand their glucose levels in real time. To enable real-time glucose monitoring, some diabetic patients choose to use monitors with implantable sensors, at least partially of which are implanted in the body and come into contact with body fluids.

[0003] However, during use of existing monitors, the signals from the implanted sensors may become scattered and disconnected, so there is room for improvement. Summary of the Invention

[0004] The main technical problem solved by the present invention is that during the use of the existing monitor, the signal of the implanted sensor may be scattered and disconnected.

[0005] In a first aspect, an embodiment provides a monitoring instrument, comprising:

[0006] housing assembly;

[0007] an implantable sensor connected to the housing assembly;

[0008] an introducer needle, the introducer needle being disposed in the housing assembly and being used to drive at least a portion of the implantable sensor to be inserted into a human body so as to bring the implantable sensor into contact with body fluids;

[0009] and a circuit board assembly, the circuit board assembly being disposed in the housing assembly and being connected to the implantable sensor signal;

[0010] The implantable sensor includes a conductive layer, an insulating layer and a sacrificial layer, wherein the conductive layer and the insulating layer are alternately arranged, the conductive layer is used to realize the transmission of electrical signals, and the insulating layer is used to insulate the conductive layer;

[0011] The implantable sensor has a connection area connected to the shell component, and the sacrificial layer is arranged in the connection area. The sacrificial layer is used to be destroyed by the force before the adjacent position of the conductive layer and the insulating layer under the action of external force to protect the conductive layer.

[0012] In one embodiment, the implantable sensor includes a first part and a second part, the first part is used to connect to the shell assembly, one end of the second part is connected to the first part, and the other end is used to be inserted into the human body, and the second part is bent and arranged on the first part; the connection area is located at a position adjacent to the first part and the second part, and the shape of the sacrificial layer is adapted to the connection area.

[0013] In one embodiment, it also includes a base layer, the base layer includes a first side and a second side arranged opposite to each other, the conductive layer includes a first conductive layer, the insulating layer includes a first insulating layer, and the first conductive layer, the first insulating layer and the sacrificial layer are stacked in sequence on the first side of the base layer in a direction away from the base layer.

[0014] In one embodiment, the conductive layer further includes a second conductive layer and a third conductive layer, and the insulating layer further includes a second insulating layer and a third insulating layer, and the second conductive layer, the second insulating layer, the third conductive layer and the third insulating layer are stacked in sequence on the second side of the base layer in a direction away from the base layer.

[0015] In one embodiment, the sacrificial layer is configured as a single-layer structure.

[0016] In one embodiment, the sacrificial layer is configured as a stacked multi-layer structure.

[0017] In one embodiment, the sacrificial layer includes a conductive material layer and / or an insulating material layer, and the conductive material layer of the sacrificial layer is used for non-electrical signal transmission functions.

[0018] In one embodiment, a fastening layer is provided between the conductive layer and the insulating layer, and the fastening layer is used to enhance the adhesion between the conductive layer and the insulating layer.

[0019] In one embodiment, the housing assembly has a mounting slot, the implantable sensor is connected to the mounting slot, and at least a portion of the connection area is located within the mounting slot;

[0020] The shell assembly includes a first shell and a second shell, the first shell is connected to the second shell, and the second shell is used to face the human body; the circuit board assembly is arranged between the first shell and the second shell, and the mounting groove is located in the second shell; the mounting groove is filled with a glue block, and at least part of the sacrificial layer is bonded to the glue block.

[0021] In a second aspect, an embodiment provides an implantable sensor, comprising a conductive layer, an insulating layer and a sacrificial layer, wherein the conductive layer and the insulating layer are alternately arranged, the conductive layer is used to realize the transmission of electrical signals, and the insulating layer is used to insulate the conductive layer; the implantable sensor has a connection area for connecting to a shell assembly, the sacrificial layer is arranged in the connection area, and the sacrificial layer is used to be destroyed by the force before the adjacent position of the conductive layer and the insulating layer under the action of external force, so as to protect the conductive layer.

[0022] According to the monitor and implantable sensor of the above embodiment, the monitor includes a housing assembly, an implantable sensor, a guide needle, and a circuit board assembly. The implantable sensor is connected to the housing assembly, and the guide needle is connected to the housing assembly. The guide needle is used to drive at least a portion of the implantable sensor to be inserted into the human body so that the implantable sensor contacts the body fluid. The circuit board assembly is connected to the housing assembly, and the circuit board assembly is signal-connected to the implantable sensor. The implantable sensor includes a conductive layer, an insulating layer, and a sacrificial layer. The conductive layer and the insulating layer are alternately arranged. The conductive layer is used to realize the transmission of electrical signals, and the insulating layer is used to insulate the conductive layer. The implantable sensor has a connection area connected to the housing assembly. The sacrificial layer is stacked on the connection area. The sacrificial layer is used to be destroyed by the force before the adjacent position of the conductive layer and the insulating layer under the action of external force to protect the conductive layer. When using the monitor, at least a portion of the implantable sensor is inserted into the human body so that the implantable sensor contacts the body fluid, and the corresponding detection signal is transmitted to the circuit board assembly through the conductive layer. When the implantable sensor is subjected to force due to human activities or other reasons, the sacrificial layer is destroyed by the force before the adjacent position of the conductive layer and the insulating layer, thereby absorbing the force to reduce the force transmitted to the conductive layer, thereby protecting the conductive layer, reducing the probability of signal transmission being affected by the breakage of the conductive layer, and reducing the occurrence of signal scatter and disconnection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of a monitoring instrument in one embodiment of the present application;

[0024] Figure 2 This is an exploded view of a monitoring device in one embodiment of the present application;

[0025] Figure 3 This is a structural schematic diagram of an implantable sensor installed in a second housing at a first viewing angle in an embodiment of the present application;

[0026] Figure 4 This is an exploded view of the implantable sensor and the second housing in one embodiment of the present application;

[0027] Figure 5 This is a structural schematic diagram of an implantable sensor installed in a second housing at a second viewing angle in an embodiment of the present application;

[0028] Figure 6 This is a structural schematic diagram of an implantable sensor installed in a second housing at a third viewing angle in an embodiment of the present application;

[0029] Figure 7 This is a structural schematic diagram of an implantable sensor installed in a second housing at a fourth viewing angle in an embodiment of the present application;

[0030] Figure 8 This is a schematic structural diagram of an implantable sensor at a first viewing angle in an embodiment of the present application;

[0031] Figure 9 This is a schematic structural diagram of an implantable sensor at a second viewing angle in an embodiment of the present application;

[0032] Figure 10 This is a schematic structural diagram of an implantable sensor at a third viewing angle in an embodiment of the present application;

[0033] Figure 11 This is a schematic structural diagram of an implantable sensor at a fourth viewing angle in an embodiment of the present application;

[0034] Figure 12 For this application Figure 11 Enlarged view of point A in the middle;

[0035] Figure markings: 100, shell assembly; 110, first shell; 120, second shell; 130, mounting slot; 200, implantable sensor; 210, base layer; 211, first side; 212, second side; 220, conductive layer; 221, first conductive layer; 222, second conductive layer; 223, third conductive layer; 230, insulating layer; 231, first insulating layer; 232, second insulating layer; 233, third insulating layer; 240, sacrificial layer; 241, conductive material layer; 242, insulating material layer; 250, first part; 260, second part; 300, guide needle; 400, circuit board assembly; 500, adhesive tape; 600, cap column; 700, sealing plug. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, it is not necessary to describe these related operations in detail. They will fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0037] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0038] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0039] This embodiment provides a monitoring instrument.

[0040] Please refer to Figure 1-12 The monitor includes a housing assembly 100 , an implantable sensor 200 , an introducer needle 300 , and a circuit board assembly 400 .

[0041] Please refer to Figure 1-3In accordance with 8-12, the implantable sensor 200 is connected to the housing assembly 100. A guide needle 300 is disposed in the housing assembly 100. The guide needle 300 is used to insert at least a portion of the implantable sensor 200 into the human body so that the implantable sensor 200 comes into contact with bodily fluids. A circuit board assembly 400 is disposed in the housing assembly 100 and is signal-connected to the implantable sensor 200. The implantable sensor 200 includes a conductive layer 220, an insulating layer 230, and a sacrificial layer 240. The conductive layers 220 and the insulating layers 230 are alternately disposed. The conductive layers 220 are used to transmit electrical signals, and the insulating layers 230 are used to insulate the conductive layers 220. The implantable sensor 200 has a connection region connected to the housing assembly 100. The sacrificial layer 240 is disposed in the connection region. The sacrificial layer 240 is designed to be destroyed by an external force before the adjacent portions of the conductive layers 220 and the insulating layers 230 are destroyed, thereby protecting the conductive layer 220.

[0042] When the monitor is in use, at least a portion of the implantable sensor 200 is inserted into the human body via the guide needle 300, allowing the implantable sensor 200 to contact body fluids and transmit corresponding detection signals to the circuit board assembly 400 via the conductive layer 220. When the implantable sensor 200 is subjected to force due to human activity or other reasons, the sacrificial layer 240 is damaged by the force before the adjacent position of the conductive layer 220 and the insulating layer 230 is damaged, thereby absorbing the force and reducing the force transmitted to the conductive layer 220. This in turn protects the conductive layer 220, reduces the probability of signal transmission being affected by a break in the conductive layer 220, and thus reduces the occurrence of signal scatter and disconnection.

[0043] Please refer to Figure 1-3 Regarding points 8-12, it should be noted that during the development of this product, the inventors discovered that the monitor's signal exhibited scatter and disconnection. This phenomenon was also observed to varying degrees in other similar products on the market during experiments. The inventors subsequently analyzed this phenomenon and deduced the following principle.

[0044] The principle of this phenomenon is: the implantable sensor 200 needs to be fixed with UV glue. During the process of fixing the implantable sensor 200 with UV glue, the UV glue will shrink, causing the part of the implantable sensor 200 that is in contact with the glue to receive outward tensile stress. Therefore, the part of the implantable sensor 200 implanted in the human body will bend slightly back and forth due to human movement. This process will cause the conductive layer 220 used for electrical signal transmission to tear (the bonding force between layers is limited).

[0045] In this embodiment, a sacrificial layer 240 with lower adhesion is printed on the local area of the implantable sensor 200 that is subjected to greater force. If the printed sacrificial layer 240 is torn, it does not affect the original performance of the implantable sensor 200, and can also weaken the force transmitted to the conductive layer 220 that transmits the signal to protect the conductive layer 220. That is, the sacrificial layer 240 can also be understood as a "protective layer."

[0046] Please refer to Figure 8-12 Specifically, the sacrificial layer 240 can be formed by local spraying or immersion, or can be manufactured by magnetron sputtering, 3D printing, photolithography, or laser direct writing. The insulating layer 230 can be made of PET, epoxy resin, PI, PU, PP, or PC, and the conductive layer 220 can be made of metal, carbon, graphene, or a composite conductive material.

[0047] Of course, other methods can also be used to protect the conductive layer 220, for example, using silicone glue (this type of glue has a low hardness after curing and is not prone to the above-mentioned tearing phenomenon), using UV glue that has a low expansion hardness after curing, using materials with stronger adhesion for the conductive layer 220 and the insulating layer 230, adding a non-functional layer (fastening layer) with stronger adhesion between the conductive layer 220 and the insulating layer 230, and so on.

[0048] Please refer to Figure 1-3 In one embodiment, the implantable sensor 200 includes a first portion 250 and a second portion 260. The first portion 250 is configured to connect to the housing assembly 100. One end of the second portion 260 is connected to the first portion 250, and the other end is configured to be inserted into the human body. The second portion 260 is bent relative to the first portion 250. The connection region is located adjacent to the first portion 250 and the second portion 260, and the shape of the sacrificial layer 240 is adapted to the connection region.

[0049] Because the junction of the first portion 250 and the second portion 260 is typically used to connect to the mounting slot 130 of the housing assembly 100, when the implantable sensor 200 is subjected to forces due to human activity, significant stress is likely to be generated at this location, thereby increasing the probability of tearing of the conductive layer 220. The connection area is located at the junction of the first portion 250 and the second portion 260, allowing the sacrificial layer 240 to cover the junction of the first portion 250 and the second portion 260. This allows the sacrificial layer 240 to more easily absorb this stress, thereby better protecting the conductive layer 220. It will be appreciated that the shapes of the sacrificial layer 240 and the connection area can be flexibly configured according to the actual design requirements of the implantable sensor 200.

[0050] Please refer to Figure 1-3and 8-12, in one embodiment, the monitor further includes a base layer 210, the base layer 210 includes a first side 211 and a second side 212 arranged opposite to each other, the conductive layer 220 includes a first conductive layer 221, the insulating layer 230 includes a first insulating layer 231, and the first conductive layer 221, the first insulating layer 231 and the sacrificial layer 240 are stacked in sequence on the first side 211 of the base layer 210 in a direction away from the base layer 210.

[0051] When the monitor is operating, signals are transmitted through the first conductive layer 221, and the first insulating layer 231 insulates the first conductive layer 221 from the external environment. The sacrificial layer 240 is damaged by an applied force to absorb the applied force, thereby weakening the applied force transmitted to the first conductive layer 221 and protecting the first conductive layer 221. It is understood that in one embodiment, the base layer 210 can also be considered a type of insulating layer 230 from a functional perspective, providing insulation.

[0052] Please refer to Figure 1-3 and 8-12, in one embodiment, the conductive layer 220 further includes a second conductive layer 222 and a third conductive layer 223, the insulating layer 230 further includes a second insulating layer 232 and a third insulating layer 233, and the second conductive layer 222, the second insulating layer 232, the third conductive layer 223 and the third insulating layer 233 are stacked in sequence on the second side 212 of the base layer 210 in a direction away from the base layer 210.

[0053] When the monitor is operating, signals are transmitted through the second conductive layer 222 and the third conductive layer 223. The second conductive layer 222 and the third conductive layer 223 are insulated by the second insulating layer 232, and the third conductive layer 223 is insulated from the external environment by the third insulating layer 233. It is understood that, depending on actual needs, a sacrificial layer 240 may be provided on the second insulating layer 232 and / or the third insulating layer 233 to protect the second conductive layer 222 and / or the third conductive layer 223.

[0054] Please refer to Figure 8-10 In one embodiment, the sacrificial layer 240 is configured as a single-layer structure.

[0055] The force is weakened by destroying the single-layer sacrificial layer 240, thereby protecting the conductive layer 220. Specifically, the single-layer conductive layer 220 can be an insulating material layer 242 or a conductive material layer 241. When the single-layer conductive layer 220 is configured as the conductive material layer 241, the conductive material layer 241 does not transmit signals, and the destruction of the conductive material layer 241 does not affect the signal transmission of the implantable sensor 200.

[0056] Please refer to Figure 8-12 In one embodiment, the sacrificial layer 240 is configured as a stacked multi-layer structure.

[0057] The multi-layered sacrificial layer 240 is destroyed by the applied force to reduce the applied force, thereby protecting the conductive layer 220. For example, the sacrificial layer 240 may include a conductive material layer 241 and an insulating material layer 242 stacked in sequence. Furthermore, the conductive material layer 241 does not transmit signals, and its destruction does not affect signal transmission by the implantable sensor 200.

[0058] Please refer to Figure 1-3 8-12, in one embodiment, the sacrificial layer 240 includes a conductive material layer 241 and / or an insulating material layer 242, and the conductive material layer 241 of the sacrificial layer 240 is used for non-electrical signal transmission functions.

[0059] When the sacrificial layer 240 is configured as a single layer, it can be a single layer of conductive material layer 241 or insulating material layer 242. When the sacrificial layer 240 is configured as a multi-layer, it can include a conductive material layer 241 and an insulating material layer 242 stacked in sequence. The conductive material layer 241 can be made of the same material as the first conductive layer 221, and the insulating material layer 242 can be made of the same material as the first insulating layer 231. This helps ensure that the sacrificial layer 240 is destroyed first during the force transmission process, thereby better protecting the conductive layer 220. On the other hand, it can also prevent the sacrificial layer 240 from being unnecessarily destroyed when subjected to a force far below the force limit of the conductive layer 220. Specifically, the insulating material layer 242 can be made of PET, epoxy resin, PI, PU, PP or PC, and the conductive material layer 241 can be made of metal, carbon, graphene or a composite conductive material.

[0060] Please refer to Figure 8-10 In one embodiment, a fastening layer (not shown) is provided between the conductive layer 220 and the insulating layer 230 , and the fastening layer is used to enhance the adhesion between the conductive layer 220 and the insulating layer 230 .

[0061] The fastening layer enhances the adhesion between the conductive layer 220 and the insulating layer 230 , which further helps to reduce the probability of the conductive layer 220 being torn under a force, thereby helping to improve the reliability of the implantable sensor 200 during use.

[0062] Please refer to Figure 4-8In one embodiment, the housing assembly 100 has a mounting groove 130. The implantable sensor 200 is connected to the mounting groove 130, and at least a portion of the connection area is located within the mounting groove 130. The housing assembly 100 includes a first housing 110 and a second housing 120. The first housing 110 is connected to the second housing 120, and the second housing 120 is configured to face the human body. The circuit board assembly 400 is disposed between the first housing 110 and the second housing 120, and the mounting groove 130 is located within the second housing 120. The mounting groove 130 is filled with an adhesive block, and at least a portion of the sacrificial layer 240 is bonded to the adhesive block.

[0063] On the one hand, by positioning at least a portion of the connection region within the mounting groove 130 and injecting glue into the mounting groove 130, the implantable sensor 200 is installed on the second housing 120. On the other hand, after the glue cures, a glue block is formed, to which at least a portion of the sacrificial layer 240 is bonded. Furthermore, the glue shrinks during curing, and the portion of the sacrificial layer 240 in contact with the glue is subjected to outward tensile stress. Furthermore, the portion of the implantable sensor 200 inserted into the human body is slightly bent due to human movement, making the sacrificial layer 240 more susceptible to damage under stress, thereby providing better protection for the conductive layer 220. It is also understood that if the sacrificial layer 240 is not provided, the insulating layer 230 covering the conductive layer 220 will bond to the glue, thereby increasing the likelihood of the conductive layer 220 being torn and damaged by stress.

[0064] Please refer to Figure 1-3 In one embodiment, the monitor further includes an adhesive sticker 500 , which is disposed on a side of the housing assembly 100 facing the human body. The adhesive sticker 500 is configured to adhere to the human body to fix the housing assembly 100 .

[0065] When the monitor is in use, the adhesive tape 500 can be attached to the human skin, thereby fixing the monitor on the human body.

[0066] Please refer to Figure 1-3 and 8-12, in one embodiment, the monitor further includes a cap column 600 and a sealing plug 700, the cap column 600 is detachably connected to the housing assembly 100, the interior of the cap column 600 has a through channel, the channel is used to accommodate at least a portion of the implantable sensor 200, and the sealing plug 700 is used to seal one end of the channel away from the housing assembly 100.

[0067] Before using the monitor, the space enclosed by the cap column 600 and the sealing plug 700 accommodates at least a portion of the implantable sensor 200, thereby protecting the implantable sensor 200. When the monitor needs to be used, the cap column 600 can be removed from the shell assembly 100 so that at least a portion of the implantable sensor 200 can be implanted into the human body.

[0068] On the other hand, this embodiment also provides an implantable sensor 200 .

[0069] Please refer to Figure 1-12 The implantable sensor 200 includes a conductive layer 220, an insulating layer 230, and a sacrificial layer 240. The conductive layers 220 and the insulating layers 230 are arranged alternately. The conductive layers 220 are used to transmit electrical signals, and the insulating layers 230 are used to insulate the conductive layers 220. The implantable sensor 200 has a connection area for connecting to the housing assembly 100. The sacrificial layer 240 is stacked on the connection area. The sacrificial layer 240 is designed to be destroyed by external force before the adjacent position of the conductive layer 220 and the insulating layer 230 is destroyed, thereby protecting the conductive layer 220.

[0070] When implantable sensor 200 is in use, at least a portion of implantable sensor 200 is inserted into the human body, bringing it into contact with bodily fluids. When implantable sensor 200 is subjected to forces due to human activity or other factors, sacrificial layer 240 is damaged by the force before the adjacent portion of conductive layer 220 and insulating layer 230 is damaged. This absorbs the force and reduces the force transmitted to conductive layer 220. This protects conductive layer 220 and reduces the likelihood of signal transmission being affected by a break in conductive layer 220.

[0071] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art can make several simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A monitoring instrument, characterized in that: include: housing assembly; an implantable sensor connected to the housing assembly; an introducer needle, the introducer needle being disposed in the housing assembly and being used to drive at least a portion of the implantable sensor to be inserted into a human body so as to bring the implantable sensor into contact with body fluids; and a circuit board assembly, the circuit board assembly being disposed in the housing assembly and being connected to the implantable sensor signal; The implantable sensor includes a conductive layer, an insulating layer and a sacrificial layer, wherein the conductive layer and the insulating layer are alternately arranged, the conductive layer is used to realize the transmission of electrical signals, and the insulating layer is used to insulate the conductive layer; The implantable sensor has a connection area connected to the shell component, and the sacrificial layer is arranged in the connection area. The sacrificial layer is used to be destroyed by the force before the adjacent position of the conductive layer and the insulating layer under the action of external force to protect the conductive layer.

2. The monitoring device according to claim 1, wherein: The implantable sensor includes a first part and a second part, the first part is used to connect to the shell assembly, one end of the second part is connected to the first part, and the other end is used to be inserted into the human body, and the second part is bent and arranged on the first part; the connection area is located at a position adjacent to the first part and the second part, and the shape of the sacrificial layer is adapted to the connection area.

3. The monitoring device according to claim 1, wherein: It also includes a base layer, which includes a first side and a second side arranged opposite to each other, the conductive layer includes a first conductive layer, the insulating layer includes a first insulating layer, and the first conductive layer, the first insulating layer and the sacrificial layer are stacked in sequence on the first side of the base layer in a direction away from the base layer.

4. The monitoring device according to claim 3, wherein: The conductive layer also includes a second conductive layer and a third conductive layer, and the insulating layer also includes a second insulating layer and a third insulating layer. The second conductive layer, the second insulating layer, the third conductive layer and the third insulating layer are stacked in sequence on the second side of the base layer in a direction away from the base layer.

5. The monitoring device according to claim 1, wherein: The sacrificial layer is configured as a single-layer structure.

6. The monitoring device according to claim 1, wherein: The sacrificial layer is configured as a multi-layer structure stacked together.

7. The monitoring device according to claim 1, wherein: The sacrificial layer includes a conductive material layer and / or an insulating material layer, and the conductive material layer of the sacrificial layer is used for non-electrical signal transmission functions.

8. The monitoring device according to claim 1, wherein: A fastening layer is provided between the conductive layer and the insulating layer, and the fastening layer is used to enhance the adhesion between the conductive layer and the insulating layer.

9. The monitoring device according to any one of claims 1 to 8, wherein: The housing assembly has a mounting slot, the implantable sensor is connected to the mounting slot, and at least a portion of the connection area is located within the mounting slot; The shell assembly includes a first shell and a second shell, the first shell is connected to the second shell, and the second shell is used to face the human body; the circuit board assembly is arranged between the first shell and the second shell, and the mounting groove is located in the second shell; the mounting groove is filled with a glue block, and at least part of the sacrificial layer is bonded to the glue block.

10. An implantable sensor, characterized in that: The implantable sensor comprises a conductive layer, an insulating layer and a sacrificial layer, wherein the conductive layer and the insulating layer are alternately arranged, the conductive layer is used to realize the transmission of electrical signals, and the insulating layer is used to insulate the conductive layer; the implantable sensor has a connection area for connecting to the shell assembly, the sacrificial layer is arranged in the connection area, and the sacrificial layer is used to be destroyed by the force before the adjacent position of the conductive layer and the insulating layer under the action of external force, so as to protect the conductive layer.

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