CN216984889U - Non-invasive intracranial pressure monitoring device - Google Patents
Non-invasive intracranial pressure monitoring device Download PDFInfo
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- CN216984889U CN216984889U CN202220050625.9U CN202220050625U CN216984889U CN 216984889 U CN216984889 U CN 216984889U CN 202220050625 U CN202220050625 U CN 202220050625U CN 216984889 U CN216984889 U CN 216984889U
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- pressure
- electrode plate
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- sensitive part
- intracranial
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- 238000007917 intracranial administration Methods 0.000 title claims abstract description 58
- 238000012806 monitoring device Methods 0.000 title claims abstract description 34
- 238000012544 monitoring process Methods 0.000 claims abstract description 21
- 210000004556 brain Anatomy 0.000 claims abstract description 7
- 230000002792 vascular Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 35
- 230000036760 body temperature Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 210000003625 skull Anatomy 0.000 abstract description 8
- 238000005553 drilling Methods 0.000 abstract description 7
- 238000007428 craniotomy Methods 0.000 abstract description 5
- 208000015181 infectious disease Diseases 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 239000000560 biocompatible material Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 210000001175 cerebrospinal fluid Anatomy 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 206010018985 Haemorrhage intracranial Diseases 0.000 description 1
- 208000008574 Intracranial Hemorrhages Diseases 0.000 description 1
- 206010022773 Intracranial pressure increased Diseases 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000005013 brain tissue Anatomy 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 210000004289 cerebral ventricle Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 210000002418 meninge Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 210000002330 subarachnoid space Anatomy 0.000 description 1
- 208000037816 tissue injury Diseases 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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Abstract
A non-invasive intracranial pressure monitoring device comprises a biocompatible shell, a pressure sensor, a wireless transmitting module and a power supply module, wherein the pressure sensor is arranged on the shell and used for sensing intracranial pressure of a patient and outputting a corresponding pressure signal; the wireless transmitting module is arranged in the shell and used for transmitting the pressure signal to external receiving equipment; the power module is arranged in the shell and used for supplying power to the pressure sensor and the wireless transmitting module. The non-invasive intracranial pressure monitoring device can be delivered to the brain for monitoring through the vascular intervention of an interventional delivery instrument, so that skull drilling is not needed, the risk of craniotomy can be avoided, and the infection risk is reduced. The utility model is provided with the wireless transmitting module which can transmit pressure signals to the outside in a wireless mode, so that the wireless transmitting module can be conveniently kept in a patient body for monitoring for a long time. The noninvasive intracranial pressure monitoring device has the characteristics of practical function and safe use, has strong practicability and is suitable for being widely popularized.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a medical apparatus and instrument device, in particular to a noninvasive intracranial pressure monitoring device which can be implanted into a brain for monitoring in a noninvasive mode.
[ background ] A method for producing a semiconductor device
Intracranial pressure is the pressure of cranial cavity contents such as brain tissues, cerebrospinal fluid, blood and the like on the inner wall of a cranial cavity, and has important significance in clinical diagnosis of patients with cerebral trauma and neurology. Normal intracranial pressure ranged from 70 to 180mm H2O, and intracranial pressure lasting more than 5min over 180mm H2O was clinically referred to as increased intracranial pressure. Intracranial pressure is an important observation index in clinical work of neurosurgeons, and is one of important methods for observing disease changes after craniotomy. In practice, after a craniotomy, the intracranial pressure value is usually monitored so as to find the state of illness of a patient in time and provide objective basis for the next treatment.
At present, intracranial pressure monitoring is mainly invasive monitoring, which is mainly divided into two categories: implantation-drilling through the skull or opening the skull, implanting a pressure sensor into the skull; the ductal method-after drilling the skull, the duct is placed into the ventricle, cerebral cistern or subarachnoid space, and the intracranial pressure is converted into digital by the sensor through the cerebrospinal fluid in the duct and connected with the extracranial sensor. In all of these invasive monitoring methods, a burr hole is drilled, which increases the risk of infection to some extent. Moreover, in the invasive monitoring method, the sensor cannot be placed for a long time, the sensor is usually placed for about seven days at the longest, and if the monitoring needs to be continued, another drilling hole is needed to replace the sensor for monitoring. In practice, a plurality of postoperative patients have long recovery periods, and need to monitor intracranial pressure for a long time. Therefore, invasive monitoring methods present certain risks and are not conducive to long-term monitoring.
[ Utility model ] content
The utility model aims to solve the problems and provides a noninvasive intracranial pressure monitoring device which does not need skull drilling and can carry out long-term online monitoring.
In order to solve the above problems, the present invention provides a noninvasive intracranial pressure monitoring device, which is characterized in that the noninvasive intracranial pressure monitoring device comprises a biocompatible housing, a pressure sensor, a wireless transmitting module and a power module, wherein the pressure sensor is arranged on the housing and is used for sensing the intracranial pressure of a patient and outputting a corresponding pressure signal; the wireless transmitting module is arranged in the shell and used for transmitting the pressure signal to external receiving equipment; the power module is arranged in the shell and used for supplying power to the pressure sensor and the wireless transmitting module.
Furthermore, the shell is provided with a connecting part connected with an interventional delivery device, and when the noninvasive intracranial pressure monitoring device is used, the noninvasive intracranial pressure monitoring device is delivered to the brain surface through the interventional delivery device via the vascular intervention.
Furthermore, the connecting part is a plurality of pre-plastic pawl structures, is made of shape memory metal materials, can be contained in the interventional delivery device in a clasping mode, and can be opened under the action of body temperature to be released with the interventional delivery device.
Furthermore, a pressure transmission hole for intracranial liquid to flow through so as to transmit pressure to the pressure sensor is formed in the shell, and the pressure sensor is arranged in the pressure transmission hole.
Further, the housing is spherical, and the pressure transmission hole extends in a radial direction of the housing to penetrate both ends of the housing.
Furthermore, the pressure sensor comprises a first pressure sensitive part, a second pressure sensitive part, a first electrode plate, a second electrode plate and a processing module, wherein the first pressure sensitive part and the second pressure sensitive part are arranged in the pressure transmission hole in parallel at intervals, one end of the first pressure sensitive part and one end of the second pressure sensitive part are connected with the shell, the other end of the first pressure sensitive part and the other end of the second pressure sensitive part extend to form free ends, and deformation quantities of the first pressure sensitive part and the second pressure sensitive part can be changed along with the change of intracranial pressure; the first electrode plate and the second electrode plate are respectively arranged at two sides of the first pressure sensitive part and the second pressure sensitive part, one end of the first electrode plate is connected with the shell, and the other end of the first electrode plate extends to form a free end; the distance between the first electrode plate and the second electrode plate can be changed along with the deformation of the first pressure sensitive part and the second pressure sensitive part; the processing module is connected with the first electrode plate and the second electrode plate and used for converting the change of the distance between the first electrode plate and the second electrode plate into a pressure signal.
Furthermore, the processing module is arranged in the shell and is respectively connected with the wireless transmitting module and the power supply module.
Further, the pressure transmission holes comprise a first pressure transmission hole and a second pressure transmission hole which are vertically communicated, and the first pressure sensitive part, the second pressure sensitive part, the first electrode plate and the second electrode plate are respectively arranged in the first pressure transmission hole and are parallel to the second pressure transmission hole.
Further, the first pressure sensitive part and the second pressure sensitive part are respectively and symmetrically distributed on two sides of the second pressure transmission hole.
The present invention advantageously contributes to effectively solving the above-mentioned problems. The noninvasive intracranial pressure monitoring device can be delivered to the brain for monitoring through the vascular intervention of an interventional delivery instrument, so that skull drilling is not needed, the risk of craniotomy can be avoided, and the infection risk is reduced. The non-invasive intracranial pressure monitoring device is provided with the wireless transmitting module which can transmit pressure signals to the outside in a wireless mode, so that the non-invasive intracranial pressure monitoring device can be conveniently kept in a patient body for monitoring for a long time. The noninvasive intracranial pressure monitoring device has the characteristics of practical function and safe use, has strong practicability and is suitable for being widely popularized.
[ description of the drawings ]
Fig. 1 is a schematic view of the structural principle.
Fig. 2 is a schematic structural view.
Fig. 3 is a schematic view of a delivery catheter.
Fig. 4 is a schematic diagram of the conveying process.
Fig. 5 is a schematic illustration of delivery to a destination for release.
The attached drawings are as follows: the pressure sensor comprises a shell 10, a first pressure transmission hole 11, a second pressure transmission hole 12, a connecting part 13, a pressure sensor 20, a first pressure sensitive part 21, a second pressure sensitive part 22, a first electrode plate 23, a second electrode plate 24, a processing module 25, a wireless transmitting module 30, a power supply module 40, external receiving equipment 50, a conveying conduit 60, a sheath tube 61, a core tube 62 and a clamping position 63.
[ detailed description ] embodiments
The following examples are further illustrative and supplementary to the present invention and do not limit the present invention in any way.
As shown in fig. 1 and 2, the non-invasive intracranial pressure monitoring apparatus of the present invention includes a housing 10, a pressure sensor 20, a wireless transmission module 30, and a power supply module 40. The pressure sensor 20 is used for sensing intracranial pressure of the patient and outputting a corresponding pressure signal; the wireless transmitting module 30 is used for wirelessly transmitting the pressure signal to the external receiving device 50. The power module 40 is used for supplying power to the pressure sensor 20 and the wireless transmission module 30. The housing 10 is used for enclosing the pressure sensor 20, the wireless transmission module 30 and the power supply module 40.
Specifically, as shown in fig. 1 and 2, the housing 10 is closed, and can enclose the wireless transmitting module 30 and the power module 40 therein. The housing 10 is made of a biocompatible material, such as peek material (polyetheretherketone), so as to have a better compatibility with the human body and avoid rejection reactions. In this embodiment, the housing 10 is spherical in shape, which facilitates delivery through a catheter.
As shown in fig. 1 and 2, the housing 10 is provided with a pressure transmission hole. The pressure delivery port is adapted for intracranial fluid communication to deliver pressure to the pressure sensor 20. The pressure transmission holes are through holes extending in the radial direction of the housing 10 and penetrating both ends of the housing 10. In other words, the pressure transmission hole passes through the center of the housing 10.
In order to make monitoring more sensitive, in the present embodiment, as shown in fig. 2, the pressure transmission holes include a first pressure transmission hole 11 and a second pressure transmission hole 12. The first pressure transmission hole 11 and the second pressure transmission hole 12 vertically penetrate and respectively pass through the center of the housing 10. The inner wall of the pressure transmission hole is smooth and closed, so that natural circulation of liquid is facilitated.
The pressure sensor 20 is disposed within the pressure delivery bore and is configured to sense intracranial fluid pressure. In this embodiment, as shown in fig. 2, the pressure sensor 20 includes a first pressure sensitive portion 21, a second pressure sensitive portion 22, a first electrode sheet 23, a second electrode sheet 24, and a processing module 25.
As shown in fig. 2, the first pressure sensitive part 21 and the second pressure sensitive part 22 are arranged in the pressure transmission hole in parallel and at intervals, one end of each pressure sensitive part is connected with the housing 10, the other end of each pressure sensitive part extends to form a free end, and the deformation amount of the first pressure sensitive part 21 and the deformation amount of the second pressure sensitive part 22 can be changed along with the change of intracranial pressure; in this embodiment, the first pressure sensitive portion 21 and the second pressure sensitive portion 22 are transversely disposed in the first pressure transmission hole 11, parallel to the second pressure transmission hole 12, and symmetrically disposed outside the second pressure transmission hole 12. The first and second pressure sensitive portions 21 and 22 are in a sheet shape, which does not block the first pressure transmission hole 11, so that intracranial liquid can be transmitted to the first and second pressure sensitive portions 21 and 22 through the first and second pressure transmission holes 11 and 12, so that the first and second pressure sensitive portions 21 and 22 generate deformation.
As shown in fig. 2, the first electrode plate 23 and the second electrode plate 24 are respectively disposed at two sides of the first pressure sensitive part 21 and the second pressure sensitive part 22, so as to form a capacitor structure, and the distance between the capacitor structure and the first electrode plate changes with the deformation of the first pressure sensitive part 21 and the second pressure sensitive part 22. One end of the first electrode plate 23 and one end of the second electrode plate 24 are connected to the housing 10, and the other end of the first electrode plate 23 and the other end of the second electrode plate 24 extend to form free ends, wherein the shapes and sizes of the first electrode plate 23 and the second electrode plate 24 are preferably the same as those of the first pressure sensitive part 21 and the second pressure sensitive part 22, and the first electrode plate 23 and the second electrode plate are attached to the first pressure sensitive part 21 and the second pressure sensitive part 22, so that the deformation of the first pressure sensitive part 21 and the deformation of the second pressure sensitive part 22 can be sensed more sensitively, and the monitoring sensitivity is improved.
As shown in fig. 2, one end of the first electrode plate 23 and the second electrode plate 24 connected to the housing 10 penetrates the housing 10 and extends into the housing 10 to be connected to a processing module 25 provided in the housing 10. The processing module 25 may calculate a pressure signal according to a change in a distance between the first electrode sheet 23 and the second electrode sheet 24, so as to output the pressure signal to the wireless transmitting module 30, and transmit the pressure signal to the external receiving device 50 through the wireless transmitting module 30, thereby wirelessly transmitting data.
The first pressure sensitive part 21 and the second pressure sensitive part 22 are pressed through the change of the intracranial pressure, so that the first pressure sensitive part 21 and the second pressure sensitive part 22 are deformed, the distance between the first electrode plate 23 and the second electrode plate 24 is changed, a capacitance value which changes along with the change of the intracranial pressure is further formed, and the capacitance signal can be converted into an intracranial pressure value through the further processing of the processing module 25.
As shown in fig. 1 and fig. 2, the wireless transmitting module 30 is powered by the power module 40 to operate, is connected to the processing module 25 of the pressure sensor 20, and is configured to wirelessly transmit the pressure signal to an external device, and may be a known bluetooth low energy module, an infrared module, or the like, which is not limited in this embodiment. The wireless transmitting module 30 is hermetically disposed in the housing 10.
As shown in fig. 1 and 2, the power module 40 is hermetically disposed in the housing 10, connected to the pressure sensor 20 and the wireless transmitting module 30, and configured to supply power to the pressure sensor 20 and the wireless transmitting module 30. The power module 40 may be selected from a well-known miniature battery that can be sufficiently powered for a period of 2-6 months.
As shown in fig. 2, a connector 13 for connecting an interventional delivery device is provided on the housing 10 to facilitate delivery of the device into the brain. In this embodiment, the connecting portion 13 is a plurality of premolded pawl structures, and is made of a shape memory metal material, which can deform under the action of body temperature to restore the premolded shape. When in vitro, the pawl structure is in a folding state and can be clamped with a clamping position 63 of the interventional delivery device. When delivered to the body, the pawl structure is expanded by body temperature (shown in phantom in fig. 2), whereupon it can be disengaged from the interventional delivery device and released. In general, as shown in fig. 3 to 5, the interventional delivery device is a delivery catheter 60, which includes a sheath tube 61 and a core tube 62 coaxially sleeved, wherein the sheath tube 61 is wrapped around the core tube 62 and can move axially relative to the core tube 62; a position of the proximal end part of the core tube 62 is provided with a position-blocking part 63, and the pawl structure can be blocked on the position-blocking part 63; when the monitoring device is clamped on the clamping position 63 of the core tube 62, the sheath tube 61 can be advanced to wrap the monitoring device in the sheath tube 61 (as shown in fig. 4), so as to prevent the pawl structure of the monitoring device from being opened due to the action of body temperature in the conveying process; when the sheath 61 is retracted to the target position (as shown in fig. 5), the sheath 61 is displaced from the monitoring device, and the expanded pawl structure is released from the detent 63 on the core tube 62 without being restricted by the sheath 61, thereby releasing the sheath to the target position.
Therefore, the noninvasive intracranial pressure monitoring device is formed. Because blood vessels are arranged on the meninges, the catheter guide wire technology is used for intervention operation, and the noninvasive intracranial pressure monitoring device can be conveyed to a brain surface part through an intervention conveying appliance, so that real-time online monitoring is realized. Because the shell 10 of the noninvasive intracranial pressure monitoring device is made of biocompatible materials, the intracranial tissue injury can be reduced, and the risks of complications such as intracranial hemorrhage and the like can be greatly reduced; because the casing 10 is provided with the first pressure transmission hole 11 and the second pressure transmission hole 12 which are mutually communicated, and the pressure sensor 20 is arranged in the first pressure transmission hole 11 and distributed outside two sides of the second pressure transmission hole 12, the pressure of the intracranial liquid can be well transmitted to the pressure sensor 20, so that the pressure sensor 20 can accurately monitor the intracranial pressure; in addition, this noninvasive intracranial pressure monitoring devices is equipped with wireless transmitting module 30 and power module 40, and it breaks away from the constraint of wire, can more convenient use to can keep somewhere and do not influence patient's daily life in vivo. The noninvasive intracranial pressure monitoring device does not need skull drilling when in use, avoids the risk of craniotomy, only needs intervention operation, can reduce the risk and pain of patients, and has strong practicability. In addition, it can be left in the body of the patient for long-term monitoring, and is more convenient to use. Further, the non-invasive intracranial monitoring device can be made of degradable materials, and can be slowly degraded with time after the monitoring function is completed.
While the utility model has been described with reference to the above embodiments, the scope of the utility model is not limited thereto, and the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the spirit of the utility model.
Claims (9)
1. A non-invasive intracranial pressure monitoring device, comprising:
a biocompatible housing (10);
the pressure sensor (20) is arranged on the shell (10) and is used for sensing the intracranial pressure of the patient and outputting a corresponding pressure signal;
the wireless transmitting module (30) is arranged in the shell (10) and is used for transmitting the pressure signal to an external receiving device (50);
and the power supply module (40) is arranged in the shell (10) and is used for supplying power to the pressure sensor (20) and the wireless transmitting module (30).
2. A non-invasive intracranial pressure monitoring device as claimed in claim 1, wherein a connecting portion (13) is provided on the housing (10) for connection to an interventional delivery device, the non-invasive intracranial pressure monitoring device being delivered, in use, into the brain surface via a vascular intervention by the interventional delivery device.
3. A non-invasive intracranial pressure monitoring device as claimed in claim 2, wherein the connecting portion (13) is a plurality of pre-plastic pawl structures made of shape-memory metal material, which are clasped and received in the interventional delivery device and can be opened by body temperature to release with the interventional delivery device.
4. A non-invasive intracranial pressure monitoring apparatus as claimed in claim 1, wherein the housing (10) has a pressure-transmitting aperture in fluid communication with the intracranial fluid for transmitting pressure to the pressure sensor (20), the pressure sensor (20) being disposed in the pressure-transmitting aperture.
5. Non-invasive intracranial pressure monitoring device according to claim 4, wherein the outer casing (10) is spherical, and the pressure-transmitting hole extends through both ends of the outer casing (10) in a radial direction of the outer casing (10).
6. The non-invasive intracranial pressure monitoring device as recited in claim 5, wherein the pressure sensor (20) comprises:
the first pressure sensitive part (21) and the second pressure sensitive part (22) are arranged in the pressure transmission hole in parallel at intervals, one end of each pressure sensitive part is connected with the shell (10), the other end of each pressure sensitive part extends to form a free end, and the deformation quantity of the first pressure sensitive part (21) and the deformation quantity of the second pressure sensitive part (22) can be changed along with the change of intracranial pressure;
the first electrode plate (23) and the second electrode plate (24) are respectively arranged at two sides of the first pressure sensitive part (21) and the second pressure sensitive part (22), one end of the first electrode plate is connected with the shell (10), and the other end of the first electrode plate extends to form a free end; the distance between the first electrode plate (23) and the second electrode plate (24) can be changed along with the deformation of the first pressure sensitive part (21) and the second pressure sensitive part (22);
and the processing module (25) is connected with the first electrode plate (23) and the second electrode plate (24) and is used for converting the change of the distance between the first electrode plate (23) and the second electrode plate (24) into a pressure signal.
7. The non-invasive intracranial pressure monitoring device as recited in claim 6, wherein the processing module (25) is disposed in the housing (10) and is connected to the wireless transmitting module (30) and the power supply module (40), respectively.
8. The non-invasive intracranial pressure monitoring device as recited in claim 7, wherein the pressure-transmitting holes include a first pressure-transmitting hole (11) and a second pressure-transmitting hole (12) that extend vertically therethrough, and the first pressure-sensitive portion (21), the second pressure-sensitive portion (22), the first electrode plate (23), and the second electrode plate (24) are disposed in the first pressure-transmitting hole (11) and parallel to the second pressure-transmitting hole (12), respectively.
9. The non-invasive intracranial pressure monitoring device as recited in claim 8, wherein the first pressure-sensitive portion (21) and the second pressure-sensitive portion (22) are symmetrically disposed on both sides of the second pressure-transmitting hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220050625.9U CN216984889U (en) | 2022-01-10 | 2022-01-10 | Non-invasive intracranial pressure monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220050625.9U CN216984889U (en) | 2022-01-10 | 2022-01-10 | Non-invasive intracranial pressure monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216984889U true CN216984889U (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220050625.9U Expired - Fee Related CN216984889U (en) | 2022-01-10 | 2022-01-10 | Non-invasive intracranial pressure monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216984889U (en) |
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2022
- 2022-01-10 CN CN202220050625.9U patent/CN216984889U/en not_active Expired - Fee Related
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