CN216933219U - Implantable biosensor delivery system - Google Patents

Abstract

The utility model discloses an implantable biosensor delivery system, which comprises a sensing wireless signal transmitter and an applicator, wherein the wireless signal sensing transmitter is provided with a mechanical switch, the applicator is provided with an application system and a mechanical trigger mechanism, and the application system is used for pushing out and releasing the wireless signal transmitter to a human body; the mechanical trigger mechanism is connected with the application system and is used for operating the mechanical switch in the process that the application system pushes out and releases the wireless signal transmitter to a human body, so that the implanted biosensor continuous blood sugar monitoring system is switched from a storage mode to a working mode. In the storage mode, the corresponding processing circuit is simple, and the standby power consumption is low; the utility model adopts a mechanical triggering mode, and the mechanical mechanism is tightly surrounded and firmly fixed in a storage mode, so that the false triggering is prevented.

Description

Implantable biosensor delivery system

Technical Field

The present invention relates to an implantable biosensor delivery system.

Background

Some medical devices, due to functional requirements, carry electronic components and batteries inside, and due to volume cost and the like, the size and capacity of the batteries are limited. After the medical device is produced, it is usually not used immediately by the user, but goes through the transportation, sale, and other links, in which the medical device needs to be maintained in an ultra-low power storage mode to prevent the battery from being consumed too much.

When the medical device reaches the user and is used, it is switched from the storage mode to the operational mode, and all functions are activated.

An implantable biosensor delivery system, such as cgm (continuous Glucose monitoring) system, is small in size so as not to affect the normal life of the user, because it needs to be applied to the body of the user, and thus the internal battery is smaller and the battery capacity is very limited. In order to make the use effect of the user good, the service life of the common CGM system is as long as more than 10 days, even 14 days. Therefore, the chip of the CGM system has a storage mode and a working mode, and in the storage mode, the CGM system turns off most functions, maintains the state of ultra-low power consumption in standby, and only keeps the function of monitoring the wake-up signal until being woken up and switched to the working mode during working.

There are several ways in which a chip applied in a medical device, particularly an implantable biosensor delivery system, may be woken up from a storage mode and switched to an operating mode:

1, NFC: near Field Communication (NFC), which is a high-frequency wireless communication technology within ten centimeters, is internally provided with an NFC circuit, and when the NFC circuit is switched to a working mode, an external NFC terminal sends a wake-up signal, so that a chip of the implantable biosensor delivery system is switched to the working mode. The standby current is only a few nanoamperes, but an NFC circuit is required in the standby current, and after an applicator is released, a mobile phone or a terminal with NFC needs to be taken to trigger, so that the standby current is high in cost and harsh in requirements.

2, a Hall switch: a magnetic sensitive switch is made up of Hall effect elements, and features that when a magnetic object is close to it, the state of internal circuit is changed to generate a switching signal, which is used as wake-up signal to wake up and switch to working mode. The standby current of the lowest detection circuit is about 2-3 microamperes when the detection circuit is kept in standby, and is slightly higher.

3, capacitive touch switch: when a human body touches the surface of the insulating product, the internal capacitance can be changed, and thus the capacitive touch switch is designed. The medical appliance is internally provided with a capacitance touch switch, and once the medical appliance is used, the medical appliance can be switched to a working mode only by touching a specific surface of a product. Although the capacitive touch switch has the advantages of convenience and simplicity, the standby current of the lowest detection circuit is maintained at standby and is about 2-3 microamperes and slightly higher.

4, photoelectric switch: the photoelectric switch is a switch sensor for converting optical signals into electric signals, when the photoelectric switch is arranged on the medical instrument, the storage mode is sealed to be a lightless state, and when the photoelectric switch is used, the seal is opened to enable the photoelectric switch to receive light and generate electric signals, so that the photoelectric switch is triggered to be switched to a working mode. However, the photoelectric switch is easy to interfere and trigger by mistake, and is easy to fail.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an implantable biosensor delivery system and an implantable activation method, which are easy to switch from a storage mode to a working mode.

An implantable biosensor delivery system comprising a wireless signal transmitter and an applicator, the wireless signal transmitter provided with a mechanical switch; the applicator is provided with an application system and a mechanical trigger mechanism, wherein the application system is used for pushing out and releasing the wireless signal transmitter to a human body; the mechanical trigger mechanism is connected with the application system and is used for triggering the mechanical switch to enable the implantable biosensor delivery system to be switched from the storage mode to the working mode in the process that the application system pushes out and releases the wireless signal transmitter to a human body.

Optionally, the mechanical switch is a push button switch or a metal reed or contact.

Optionally, the mechanical trigger mechanism comprises a trigger post for triggering the mechanical switch during the pushing out and releasing of the wireless signal transmitter to the human body by the application system.

Optionally, the triggering mechanism further comprises an elastic sealing gasket, wherein the sealing gasket is arranged at the opening of the surface of the shell of the wireless signal transmitter and is aligned with the mechanical switch.

Optionally, a circuit board is arranged inside the casing of the wireless signal transmitter, and a chip and a circuit are arranged on the circuit board (6); the mechanical switch is connected with the chip through the circuit board.

Optionally, the mechanical switch is a patch component or a plug-in component.

Optionally, the housing of the wireless signal transmitter comprises an upper housing and a lower housing which are connected with each other, the sealing pad is arranged on the upper housing, and the implantation needle penetrates out of the lower housing.

Optionally, the application system comprises a holder, an inner shell and a button, wherein: the bracket is positioned above the wireless signal transmitter, and the mechanical trigger mechanism is positioned on the bracket; the bottom of the inner shell is provided with an opening, and the support is positioned in the inner shell and can move up and down; a driving device is arranged between the support and the top of the inner wall of the inner shell, and the button on the inner shell clamps the support in a storage state.

Optionally, the drive means is a push spring.

Optionally, the button is arranged on the inner shell and can move relatively; the two sides of the bracket extend out and then penetrate through the top of the inner shell, and the extending end is provided with a button bayonet; the button is provided with a hook which is matched with the button bayonet, and the hook is positioned in the button bayonet in the storage mode.

Optionally, the support is provided with more than two supporting elastic arms, and the end portions of the supporting elastic arms are located above the wireless signal transmitter.

Optionally, a downwardly extending support post is provided on the top of the inner wall of the inner casing, and the support post passes through the hole on the bracket and then abuts on the wireless signal transmitter.

According to the technical scheme of the utility model, a wireless signal transmitter in the implantable biosensor delivery system is provided with a mechanical switch; the applicator is provided with an application system and a mechanical trigger mechanism that operates the mechanism to switch the implantable biosensor delivery system to an operational mode when the application system pushes the wireless signal transmitter out. In the technical scheme, the implantable biosensor delivery system is awakened in a mechanical trigger mode, because the mechanical trigger mode is adopted, the required maintaining circuit is simple, and only a few tenths of microamperes are needed in a storage state; the power consumption of the photoelectric switch, the Hall element and the capacitive touch switch is several microamperes, so that the low power consumption of the storage state is realized; the mechanical trigger mechanism is tightly surrounded and firmly fixed, so that false triggering is prevented, and compared with photoelectric and electromagnetic triggering, the mechanical trigger mechanism is high in interference resistance and false triggering resistance.

Drawings

For purposes of illustration and not limitation, the present invention will now be described in accordance with its preferred embodiments, particularly with reference to the accompanying drawings, wherein:

fig. 1 is a circuit schematic of an implantable biosensor delivery system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a wireless signal transmitter;

fig. 3 is a schematic structural diagram of an implantable biosensor delivery system;

FIG. 4 is an exploded view of an applicator (including a wireless signal transmitter);

FIG. 5 is a schematic structural view of a stent;

FIG. 6 is a schematic view of the attachment of the bracket to the sensor transmitter;

FIG. 7 is a schematic view of the structure of the inner case;

FIG. 8 is a schematic view of the support post abutting the sensor transmitter on the inner housing;

FIG. 9 is a schematic view of the structure of the button;

FIG. 10 is a perspective view of the button hooking bracket;

FIG. 11 is a cross-sectional view of the button hooking bracket;

FIG. 12 is a perspective view of the button ejection mount bayonet;

FIG. 13 is a cross-sectional view of the push button exit cradle bayonet;

fig. 14 is a schematic diagram of an implantable biosensor delivery system in an implanted state;

fig. 15 is a schematic diagram of a skin-contacting state of the implantable biosensor delivery system;

fig. 16 is a schematic diagram of an implantable biosensor delivery system trigger switch state;

fig. 17 is a circuit schematic of a mechanical trigger of an implantable biosensor delivery system.

In the figure: 1-sealing pad, 2-mechanical switch, 3-lower shell, 4-chip, 5-upper shell, 6-circuit board, 7-medical adhesive plaster, 8-applicator, 9-wireless signal transmitter, 10-retraction spring, 12-bracket, 13-spring seat, 14-button, 15-outer shell, 16-inner shell, 17-driving device, 18-triggering column, 19-supporting elastic arm, 20-button bayonet, 21-supporting column, 22-trip, 23-triggering, 24-elastic supporting, 25-trip, 26-implantation needle.

Detailed Description

In the embodiment of the present invention, in the process of pushing out and releasing the wireless signal transmitter to the human body by the application system, the mechanical trigger mechanism operates the mechanical switch to switch the implantable biosensor delivery system to the working mode, which will be described in detail below.

Fig. 1 is a schematic circuit diagram of an implantable biosensor delivery system according to an embodiment of the present invention, and as shown in fig. 1, the implantable biosensor delivery system includes a wireless signal transmitter and an applicator, wherein the wireless signal transmitter includes a mechanical switch, a processing circuit, a battery, an external functional circuit, and a chip. The embodiment of the utility model adopts a mechanical trigger switch mode, the original Bluetooth chip is in a low-power consumption sleep mode, and the standby current is only less than 0.5 microampere; when the user uses the implanted biosensor delivery system, since the user needs to implant subcutaneously, the mechanical trigger mechanism of the applicator switches on or off during the implantation process, so that the signal is processed by the circuit and then transferred to the bluetooth chip, and the chip is switched to the working mode, thereby ending the dormancy.

The final part of the implantable biosensor delivery system is the wireless signal transmitter 9, which is shown in fig. 2, and which is operatively attached to the skin surface while part of the sensor is implanted subcutaneously. The wireless signal transmitter 9 is provided with an upper shell 5 and a lower shell 3 which are bonded and sealed with each other, a circuit board 6 is arranged inside, and a chip 4 and other circuits are arranged on the circuit board 6. The surface of the shell is provided with a hole and is sealed by an elastic sealing gasket 1, a mechanical switch 2 welded on a circuit board 6 is arranged below the sealing gasket 1, and the mechanical switch 2 is suitable for large-scale production and needs to select a patch component or a plug-in component. The mechanical switch 2 is therefore also connected to the chip 4 via the processing circuit, input from the I/O pins of the chip 4. The mechanical switch 2 is a button switch, and can also be a metal reed, a contact or conductive rubber.

The housing, which is open at the surface and sealed by the gasket 1, may be the upper housing 5 or the lower housing 3. The upper shell 5 is selected in the embodiment of the utility model, and the advantage is that the trigger mechanism is easy to arrange; if the arrangement is chosen at the lower shell 3, its opening is better hidden from view when released to the body, but the mechanism is relatively difficult to arrange.

The wireless signal transmitter 9 is on standby in the storage mode, activating the biosensor by pushing out the applicator. As shown in fig. 3, the implantable biosensor delivery system also has an applicator 8, the applicator 8 surrounding the wireless signal transmitter 9, the wireless signal transmitter 9 being protected in the storage mode; in use, applicator 8 pushes out and releases wireless signal emitter 9 to the body, the biosensor is implanted subcutaneously with implant needle 26, while applicator 8 is separated from wireless signal emitter 9, and wireless signal emitter 9 is left on the skin of the user after applicator 8 is removed.

In the implantation process, the mechanical switch 2 of the wireless signal transmitter 9 is synchronously triggered, so that the chip 4 is switched from the storage mode to the working mode to start formal work.

The mechanical switch is triggered in two modes, one mode is that in a storage state, a reed is pressed down, and a mechanism is used for loosening the reed in an implantation process so as to trigger the reed; the spring plate can be pulled up, for example, like a lever, one end of the lever is pressed down, the other end of the lever is lifted up, and the spring plate connected to the other end of the lever is loosened; the other is that in the storage state, the reed is not pressed, and the reed is pressed by a mechanism in the implantation process, so that the spring is triggered. In the embodiment of the utility model, the storage mode reed is not pressed down, and the storage mode reed is pressed down during implantation.

As shown in fig. 4 to 8, the applicator 8 is in direct contact with the wireless signal transmitter 9 and has a holder 12, the holder 12 having a triggering cylinder 18 opposite the mechanical switch 2 via the mat seal 1 of the wireless signal transmitter 9, the triggering cylinder 18 of the holder 12 not pressing the mechanical switch 2 via the mat seal 1 in the storage mode.

Meanwhile, the support 12 is provided with two or more supporting elastic arms 19 supporting the wireless signal transmitter 9. In the embodiment of the present invention, the number of the supporting elastic arms 19 is four to balance the stress.

Also within the applicator 8 is an inner housing 16, the inner housing 16 being a component that positions the holder 12, the button 14, etc., within which the holder 12 moves up and down. Between the holder 12 and the inner housing 16, a driving means 17 is arranged, wherein the driving means 17 may be embodied as a pushing spring, which is compressed in the storage mode as a driving force for implantation, and in the storage mode, the button 14 on the inner housing 16 engages the holder 12, and the holder 12 is fixed.

Four support columns 21 are arranged on the inner shell 16, the support columns 21 penetrate through the bracket 12 to prop against the wireless signal transmitter 9, and when the wireless signal transmitter 9 is arranged on the bracket 12, the support columns 21 of the inner shell 16 penetrate through the bracket 12 to prop against the wireless signal transmitter 9; thus, although the support 12 is elastically supported against the wireless signal emitter 9, the wireless signal emitter 9 cannot move upwards any more, so that the mechanical switch 2 is prevented from being mistakenly triggered by being pressed against the trigger post 18.

Fig. 9 is a schematic structural view of the button, fig. 10 and fig. 11 are schematic views of the button hooking the bracket, a force is applied to the button 14, the button 14 is retracted, and the hook 25 is withdrawn from the button bayonet 20 of the bracket 12; as shown in fig. 12 and 13, the button 14 is fully withdrawn from the button notch 20 of the holder 12, and the holder 12 can be implanted under the action of the driving means 17 between the holder 12 and the inner housing 16.

As shown in fig. 14-16, the method of implant activation of the implantable biosensor delivery system of the present invention comprises the steps of:

removing the respective caps of the applicator 8 and the wireless signal transmitter 9 and pressing them against the skin, with the pushing spring between the holder 12 and the inner shell 16 in a compressed state, the button 14 snapping the holder 12 in place;

when the button 14 is pressed, the button 14 moves to retreat the button bayonet 20 on the bracket 12, and the bracket 12 acts towards the skin under the pushing of the pushing spring to implant;

in the applicator 8, the pushing spring pushes the bracket 12 and the wireless signal emitter 9 to approach to the skin, and the bottom of the wireless signal emitter 9 is stopped by the obstruction of the human body after contacting the skin;

the force of the pushing spring is larger than the resistance force at the supporting elastic arm 19 so as to enable the bracket 12 to continue to advance, and the triggering column 18 on the bracket 12 contacts and presses the mechanical switch 2 of the wireless signal transmitter 9 through the sealing gasket 1 in the approaching process;

when the mechanical switch 2 is pressed, a wake-up signal of the chip 4 is generated, so that the chip 4 is switched from the storage mode to the working mode.

According to the technical scheme of the embodiment of the utility model, the applicator comprises an application system and a mechanical trigger mechanism, wherein the mechanical trigger mechanism triggers a mechanical switch, the mechanical switch is connected with a chip through a circuit, and the used chip exists in the original wireless signal transmitter; the applicator is necessary, the stent, the inner shell, the driving device and the button adopted by the application system are also needed by the application system to realize the basic function of pushing out and releasing the wireless signal transmitter to the human body, and the mechanical switch is operated to switch the implanted biosensor delivery system from the storage mode to the working mode by utilizing the group of elements; the implantation procedure involved here is also inherently necessary without additional work steps, so that embodiments of the present invention achieve local materials. And the opposite trigger by NFC must be matched with a receiving terminal or a mobile phone with NFC.

In the embodiment of the utility model, in the storage mode, the chip of the implantable biosensor delivery system has low standby power consumption because the electrical signal of the mechanical switch is direct and simple and the correspondingly required processing circuit is simple, so that the standby power consumption and the standby current can be maintained in the states as low as possible. And the corresponding matching circuits of the corresponding capacitive touch switch, the Hall magnetic control switch and the like are complex, and the standby current is about 5 times higher.

Fig. 17 is a schematic circuit diagram of a mechanical trigger of an implantable biosensor delivery system, which requires a simpler maintenance circuit, including only capacitors and resistors, and therefore requires less power consumption in the standby mode, requiring only a few tenths of a microampere. In fig. 17, the pin P0.27 is used to wake up the chip from the standby mode, and the capacitor C34 and the resistor R20 function to ensure that no matter how long the switch is closed, a high level is generated on the pin P0.27 for at least a certain period of time, for example, 100ms, to ensure that there is enough high level to wake up the chip.

The embodiment of the utility model adopts a mechanical triggering mode to realize that the storage mode is switched to the working mode, and the mechanical mechanism is tightly surrounded and firmly fixed in the storage mode, thereby preventing false triggering and having strong anti-interference and false touch resistance. The relative NFC, the capacitive touch switch, the Hall magnetic control switch, the photoelectric switch and the like are all triggered by photoelectromagnetism, but the existing environment has a lot of complicated photoelectromagnetism, and is easy to be interfered and triggered by mistake.

The above-described embodiments should not be construed as limiting the scope of the utility model. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. An implantable biosensor delivery system comprising a wireless signal transmitter (9) and an applicator (8),

the wireless signal transmitter (9) is provided with a mechanical switch (2);

the applicator (8) is provided with an application system and a mechanical trigger mechanism, wherein the application system is used for pushing out and releasing the wireless signal transmitter (9) to the human body;

the mechanical trigger mechanism is connected with the application system and is used for triggering the mechanical switch (2) to switch the implantable biosensor delivery system from the storage mode to the working mode in the process that the application system pushes out and releases the wireless signal transmitter (9) to the human body.

2. The implantable biosensor delivery system according to claim 1, wherein the mechanical switch (2) is a push-button switch or a metal reed or contact.

3. The implantable biosensor delivery system according to claim 1, wherein the mechanical trigger mechanism comprises a trigger post (18), the trigger post (18) for triggering a mechanical switch (2) during the pushing out and releasing of the wireless signal transmitter (9) to the human body by the application system.

4. The implantable biosensor delivery system according to claim 1, wherein the trigger mechanism further comprises an elastic sealing pad (1), the sealing pad (1) being provided at an opening of a housing surface of the wireless signal transmitter (9) and being aligned with a mechanical switch (2).

5. The implantable biosensor delivery system according to claim 1, wherein a circuit board (6) is provided inside the housing of the wireless signal transmitter (9), and a chip (4) and a circuit are provided on the circuit board (6);

the mechanical switch (2) is connected with the chip (4) through a circuit board (6).

6. The implantable biosensor delivery system according to claim 5, wherein the mechanical switch (2) is selected from a patch component or a plug component.

7. The implantable biosensor delivery system according to claim 4, wherein the housing of the wireless signal transmitter (9) comprises an upper shell (5) and a lower shell (3) connected to each other, the sealing pad (1) is provided on the upper shell (5), and the implantation needle (26) is passed out of the lower shell (3).

8. The implantable biosensor delivery system according to claim 1, wherein the application system comprises a stent (12), an inner shell (16), and a button (14), wherein:

the bracket (12) is positioned above the wireless signal transmitter (9), and the mechanical trigger mechanism is positioned on the bracket (12);

the bottom of the inner shell (16) is provided with an opening, and the bracket (12) is positioned in the inner shell (16) and can move up and down;

a driving device (17) is arranged between the support (12) and the top of the inner wall of the inner shell (16), and a button (14) on the inner shell (16) clamps the support (12) in a storage state.

9. The implantable biosensor delivery system according to claim 8, wherein the drive means (17) is a push spring.

10. The implantable biosensor delivery system according to claim 8,

the button (14) is arranged on the inner shell (16) and can move relatively;

the two sides of the bracket (12) extend out and then penetrate through the top of the inner shell (16), and the extending end is provided with a button bayonet (20);

the button (14) is provided with a hook (25) corresponding to the button bayonet (20), and the hook (25) is positioned in the button bayonet (20) in the storage mode.

11. The implantable biosensor delivery system according to claim 8, wherein the stent (12) is provided with two or more supporting spring arms (19), and ends of the supporting spring arms (19) are located above the wireless signal transmitter (9).

12. The implantable biosensor delivery system according to claim 8, wherein the top of the inner wall of the inner housing (16) is provided with a downwardly extending support post (21), and the support post (21) passes through the hole of the stent (12) and then abuts on the wireless signal transmitter (9).

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