Intelligent implantable wireless power supply kit

Abstract

The embodiment of the invention provides an intelligent implantable wireless power supply kit. An intelligent implantable wireless power supply kit is applied to the field of wireless power supply and comprises a control module, a power supply module and a module support. The control module and the power supply module are both arranged on the module support and fixed to the inner side of a blood vessel through the module support. The control module is electrically connected with the power supply module. The power supply module realizes electric energy storage and power supply, and the control module processes and sends data. According to the scheme, the implantation difficulty of the wireless power supply suite can be reduced, compression of the module support is facilitated, necessary hardware support is provided for the implantable monitoring sensor, and the detection accuracy and precision are improved.

Description

Technical Field

[0001] This disclosure relates to the field of wireless power supply, and in particular to a smart implantable wireless power supply kit. Background Technology

[0002] To facilitate real-time or periodic monitoring of patient data, implantable monitoring sensors have been widely used in clinical practice, and doctors are quite familiar with their operation and interpretation. However, there are significant shortcomings in the traditional implantable monitoring sensor technology field. Specifically, traditional implantable monitoring sensors mostly use active wired or battery-powered methods, which have revealed a series of problems in practical applications. In terms of size, active wired sensors require wires for power supply and data transmission, resulting in a larger overall size, which not only increases the difficulty and risk of implantation surgery but also limits the sensor's application in confined spaces. On the other hand, due to the size limitations of the sensor, its internal temperature sensing elements often cannot achieve ideal size and layout, thus affecting the sensor's thermal response time and temperature measurement accuracy. Especially when measuring high-temperature environments or rapidly changing temperature fields, the sensor's hysteresis and error problems are particularly prominent. In addition, temperature drift is also an important factor affecting detection accuracy. Due to the combined effects of various factors such as sensor materials, circuit design, and changes in the operating environment temperature, the sensor's output signal will shift over time, i.e., temperature drift. This drift phenomenon directly leads to deviations in measurement results, reducing the reliability and accuracy of the sensor. Therefore, this disclosure provides an intelligent implantable wireless power supply system capable of wireless power supply and data transmission, while ensuring that the size meets the usage requirements. Summary of the Invention

[0003] This disclosure provides an intelligent implantable wireless power supply kit, which solves the technical problem that traditional implantable monitoring sensors, which mostly use active wired or battery-powered methods, have a large overall size, which not only increases the difficulty and risk of implantation surgery, but also affects the reliability, accuracy and precision of the sensor.

[0004] A smart implantable wireless power supply kit includes: a control module, a power supply module, and a module support; both the control module and the power supply module are mounted on the module support and fixed to the inside of a blood vessel by the module support; the control module and the power supply module are electrically connected; the control module includes a first base, a first coil, and a processing module, and transmits data to an external terminal device through the first coil; the power supply module includes a second base, a second coil, a power supply circuit, and a supercapacitor, receives power through the second coil and transmits it to the power supply circuit, and stores electrical energy in the supercapacitor.

[0005] Optionally, the control module further includes a first base sealing plate and a first terminal block; the first base is a rectangular solid; the first coil is disposed on the top of the first base; a first receiving groove is provided at the bottom of the first base, the processing module is disposed inside the first receiving groove, and the first base sealing plate is sealed on the outside of the first receiving groove; a plurality of first terminal blocks are provided on the outward side of the first base sealing plate, and the first terminal blocks are electrically connected to the processing module; a connecting hole is provided at the top of the first base, and the first coil is electrically connected to the processing module through the connecting hole.

[0006] Optionally, the power supply module further includes a second base sealing plate and a second terminal block; the second base is a rectangular solid; the second coil is disposed on the top of the second base; a second receiving groove is provided at the bottom of the second base, the supercapacitor is disposed inside the second receiving groove, and the second base sealing plate is sealed on the outside of the second receiving groove; a plurality of second terminal blocks are provided on the outward side of the second base sealing plate, and the second terminal blocks are electrically connected to the power supply circuit; a recessed groove is provided on the inward side of the second base sealing plate, and the power supply circuit is disposed in the recessed groove; a connecting hole is provided at the top of the second base, and the second coil is electrically connected to the power supply circuit through the connecting hole; the power supply circuit is electrically connected to the supercapacitor; power is received through the second coil, and data is transmitted to an external terminal device through the first coil.

[0007] Optionally, the top surfaces of the first base and the second base are curved surfaces.

[0008] Optionally, the first base and the second base have the same size.

[0009] Optionally, the module support includes a module support frame, support connecting rods, and a retractable elastic frame; the first base and the second base are sized to match the module support frame, and the first base and the second base are installed inside the module support frame; the length of the module support frame is the same as the length of the support connecting rod, and the width of the module support frame is greater than the width of the support connecting rod; the module support includes three sets of module support frames, support connecting rods, and four sets of retractable elastic frames, which are staggered with the module support frames and support connecting rods; each set of module support frames is coaxially arranged, and each set of support connecting rods is coaxially arranged.

[0010] Optionally, the module support frame, the bracket connecting rod, and the retractable elastic frame are integrally formed.

[0011] Optionally, the retractable elastic frame is provided with a wire, through which the control module and the power supply module are connected.

[0012] Optionally, a monitoring sensor is provided on the module bracket, and the size of the monitoring sensor matches the size of the module support frame.

[0013] Optionally, a monitoring sensor is provided on the module bracket, and the monitoring sensor is electrically connected to the control module; the monitoring sensor includes a third base, a first pressure-sensitive diaphragm, and a second pressure-sensitive diaphragm; the third base is provided with a first pressure-sensitive groove, a second pressure-sensitive groove, and a rectangular through hole; the base is a rectangular solid; the first pressure-sensitive groove and the second pressure-sensitive groove are both circular grooves with the same radial dimension, and the first pressure-sensitive groove and the second pressure-sensitive groove are both provided on the top surface of the third base and arranged side by side along the long side of the top surface of the third base; the rectangular through hole is provided on the side of the third base, and the extension direction of the rectangular through hole is parallel to the short side of the third base; the rectangular through hole is located at the bottom of the second pressure-sensitive groove and communicates with it; the first pressure-sensitive diaphragm is sealed at the top of the first pressure-sensitive groove, and the second pressure-sensitive diaphragm is sealed at the top of the second pressure-sensitive groove.

[0014] Optionally, the monitoring sensor further includes a flow velocity detection module, which includes a human-shaped elastic sheet, a rectangular support, a strain resistor, and a circular through hole; the rectangular support is a rectangular hollow body with its left and right ends through, and through holes are provided on both the top and bottom sides of the rectangular support; the human-shaped elastic sheet is provided on both the left and right sides of the rectangular support, and the strain resistor is provided on the human-shaped elastic sheet; the size of the rectangular support matches the size of the rectangular through hole, and the rectangular support is disposed inside the rectangular through hole.

[0015] Compared with the prior art, the present disclosure achieves the following technical effects: 1. The intelligent implantable wireless power supply kit consists of a control module, a power supply module, and a module support. The separate design of the control and power supply modules reduces the difficulty of implantation due to the smaller size of each individual module compared to the overall integrated design. During use, the control module, power supply module, and monitoring sensor are coaxially aligned, facilitating the compression of the module support. The wireless power supply kit integrates energy storage, data acquisition, and wireless transmission and reception, providing the necessary hardware support for implantable monitoring sensors.

[0016] 2. The monitoring sensor integrates two measurement modules, pressure and flow rate, on the same substrate, improving system integration, reducing the number of implanted monitors, and providing doctors with more comprehensive monitoring data. The first and second pressure-sensing diaphragms in the pressure sensor have the same structure and are positioned in the same way. The upper and lower sides of the second pressure-sensing diaphragm are connected to the fluid space and are in a stress-free state, which can compensate for resistance drift caused by temperature and further improve the pressure detection accuracy.

[0017] It should be understood that the description in the Summary of the Invention section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0018] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. The drawings are provided for a better understanding of the invention and are not intended to limit the scope of this disclosure. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein: Figure 1 This is a schematic diagram of the structure of an intelligent implantable wireless power supply kit provided in an embodiment of the present disclosure; Figure 2 This is an exploded view of an embodiment of the present disclosure of an intelligent implantable wireless power supply kit; Figure 3 This is a schematic diagram of the structure of the control module in an intelligent implantable wireless power supply kit according to an embodiment of the present disclosure; Figure 4 This is a schematic diagram of the power supply module in an intelligent implantable wireless power supply kit according to an embodiment of the present disclosure; Figure 5 A schematic diagram of the structure of a pressure sensor used in conjunction with an intelligent implantable wireless power supply kit, provided in an embodiment of this disclosure; Figure 6 An exploded view of a pressure sensor used in conjunction with a smart implantable wireless power supply kit according to an embodiment of this disclosure; Figure 7 This is a schematic diagram of the structure of a module bracket in an intelligent implantable wireless power supply kit provided in one embodiment of the present disclosure; Figure 8 This is a schematic diagram showing the connection between a smart implantable wireless power supply kit and its components, provided in an embodiment of this disclosure. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0020] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0021] like Figures 1 to 8 As shown, one embodiment of this disclosure provides an intelligent implantable wireless power supply kit 1, including: a control module 11, a power supply module 12, and a module support 13; the control module 11 and the power supply module 12 are both disposed on the module support 13 and fixed to the inside of the blood vessel by the module support 13; the control module 11 and the power supply module 12 are electrically connected. The control module 11 includes a first base 111, a first coil 112, a processing module 113, a first base sealing plate 114, and first terminals 115. The first base 111 is a rectangular solid. The first coil 112 is disposed on the top of the first base 111. A first receiving groove is provided at the bottom of the first base 111, and the processing module 113 is disposed inside the first receiving groove. The first base sealing plate 114 is sealed on the outside of the first receiving groove. A plurality of first terminals 115 are provided on the outward side of the first base sealing plate 114, and the first terminals 115 are electrically connected to the processing module 113. A connecting hole is provided at the top of the first base 111, and the first coil 112 is electrically connected to the processing module 113 through the connecting hole. The power supply module 12 includes a second base 121, a second coil 122, a power supply circuit 123, a supercapacitor 124, a second base sealing plate 125, and second terminals 126. The second base 121 is a rectangular solid. The second coil 122 is disposed on the top of the second base 121. A second receiving groove is provided at the bottom of the second base 121, and the supercapacitor 124 is disposed inside the second receiving groove. The second base sealing plate 125 is sealed on the outside of the second receiving groove. A plurality of second terminals 126 are provided on the outward side of the second base sealing plate 125, and the second terminals 126 are electrically connected to the power supply circuit 123. A recessed groove is provided on the inward side of the second base sealing plate 125, and the power supply circuit 123 is disposed in the recessed groove. A connecting hole is provided at the top of the second base 121, and the second coil 122 is electrically connected to the power supply circuit 123 through the connecting hole. The power supply circuit 123 is electrically connected to the supercapacitor 124. Power is received through the second coil 122, and data is transmitted to an external terminal device through the first coil 112.

[0022] Optionally, the top surfaces of the first base 111 and the second base 121 are curved surfaces.

[0023] Optionally, the first base 111 and the second base 121 have the same size.

[0024] Optionally, the module bracket 13 includes a module support frame 131, a bracket connecting rod 132, and a retractable elastic frame 133; the first base 111 and the second base 121 are sized to match the module support frame 131, and the first base 111 and the second base 121 are installed on the inner side of the module support frame 131; the length of the module support frame 131 is the same as the length of the bracket connecting rod 132, and the width of the module support frame 131 is greater than the width of the bracket connecting rod 132; the module bracket 13 includes three sets of module support frames 131, bracket connecting rods 132, and four sets of retractable elastic frames 133, which are staggered with the module support frames 131 and the bracket connecting rods 132; each set of module support frames 131 is coaxially arranged, and each set of bracket connecting rods 132 is coaxially arranged.

[0025] Optionally, the retractable elastic frame 133 includes four M-shaped frames and four W-shaped frames. The four M-shaped frames are connected end to end to form a first hollow ring, and the four W-shaped frames are connected end to end to form a second hollow ring. The first hollow ring and the second hollow ring are concentrically connected. The four M-shaped frames have four first connection points at their ends, and the four W-shaped frames have four second connection points at their ends. The first connection points and the second connection points are connected accordingly.

[0026] Optionally, the module support frame 131, the bracket connecting rod 132, and the retractable elastic frame 133 are integrally formed (e.g., by laser cutting).

[0027] Optionally, the modular stent 13 is made of stainless steel, cobalt-chromium alloy, titanium alloy, etc.; the modular stent 13 can be rolled up to a radially compressed state and expanded in the patient's body through an expansion mechanism such as an inflatable balloon.

[0028] Optionally, the retractable elastic frame 133 is provided with a wire, through which the control module 11 and the power supply module 12 are connected.

[0029] Optionally, a monitoring sensor is provided on the module bracket 13, and the size of the monitoring sensor matches the size of the module support frame 131.

[0030] Optionally, the monitoring sensor includes a third base 2, a first pressure-sensitive diaphragm 3, and a second pressure-sensitive diaphragm 4; the third base 2 is provided with a first pressure-sensitive groove, a second pressure-sensitive groove, and a rectangular through hole; the third base 2 is a rectangular solid; the first pressure-sensitive groove and the second pressure-sensitive groove are both circular grooves with the same radial dimension, and the first pressure-sensitive groove and the second pressure-sensitive groove are both provided on the top surface of the third base 2 and arranged side by side along the long side of the top surface of the third base 2; the rectangular through hole is provided on the side of the third base 2, and the extension direction of the rectangular through hole is parallel to the short side direction of the third base 2; the rectangular through hole is located at the bottom of the second pressure-sensitive groove and communicates with it; the first pressure-sensitive diaphragm 3 and the second pressure-sensitive diaphragm 4 are both circular thin sheets of the same size, the first pressure-sensitive diaphragm 3 is sealed and disposed on the top of the first pressure-sensitive groove, and the second pressure-sensitive diaphragm 4 is sealed and disposed on the top of the second pressure-sensitive groove.

[0031] Optionally, a limiting groove is provided at the top of both the first pressure-sensitive groove and the second pressure-sensitive groove, and the limiting groove matches the size of the first pressure-sensitive diaphragm 3 and the second pressure-sensitive diaphragm 4.

[0032] Optionally, both the first pressure-sensitive diaphragm 3 and the second pressure-sensitive diaphragm 4 are provided with pressure-sensitive resistors; the pressure-sensitive resistors are composed of multiple bends connected in series, and the bends are Π-shaped; the pressure-sensitive diaphragm is divided into four regions: upper, lower, left, and right, wherein the upper and lower regions each have three bends, the left region has three bends, and the right region has two bends, and the lead-in and lead-out ends of the pressure-sensitive resistors are respectively connected to the two bends on the right; the bends in the upper and lower regions extend along the vertical direction of the pressure-sensitive diaphragm, and the bends in the left and right regions extend along the horizontal direction of the pressure-sensitive diaphragm, with the bends in the upper and lower regions perpendicular to the bends in the left and right regions.

[0033] Optionally, the monitoring sensor further includes a flow velocity detection module 5, which includes a human-shaped elastic sheet, a rectangular support, a strain resistor, and a circular through hole. The rectangular support is a rectangular hollow body with its left and right ends open. The upper and lower sides of the rectangular support are provided with perforations (external fluid is connected to the second pressure-sensing groove through the perforations of the flow velocity detection module 5). The human-shaped elastic sheet is provided on both the left and right sides of the rectangular support, and the strain resistor is provided on the human-shaped elastic sheet. The size of the rectangular support matches the size of the rectangular through hole, and the rectangular support is disposed inside the rectangular through hole.

[0034] Optionally, the strain resistor is composed of multiple bent sections connected in series; the human-shaped elastic sheet includes two bent sections and one vertical section, and the bent section of the strain resistor is located at the junction of the bent section and the vertical section of the human-shaped elastic sheet; a connecting groove is provided on the side of the rectangular support, and a wire is provided in the connecting groove for connecting the strain resistors in the human-shaped elastic sheets on the left and right sides of the rectangular support in series.

[0035] Optionally, the top surface of the third base 2 is provided with multiple wiring terminals. The pressure-sensing resistors on the first pressure-sensing diaphragm 3 and the second pressure-sensing diaphragm 4, as well as the strain resistors on the human-shaped elastic sheet, are respectively connected to the corresponding wiring terminals, and the connection with the wireless transmission module is realized through the wiring terminals.

[0036] Optionally, the third base 2 may be made of materials such as Si, SiO2, ceramics, or inert metals, and may be prepared by processes such as sputtering, evaporation, photolithography, or etching.

[0037] Optionally, the monitoring sensor is manufactured using MEMS technology.

[0038] Optionally, the resistance of the pressure-sensing resistor and the strain resistor increases when tensile deformation occurs.

[0039] Optionally, the surfaces of the pressure-sensing resistor and the strain resistor are provided with a waterproof coating layer, which may be made of silicone resin, polyimide, etc.

[0040] The monitoring sensor works as follows: A first pressure-sensing diaphragm senses the fluid pressure and converts it into a change in resistance. This data is then collected and transmitted via a wireless power supply kit. The first and second pressure-sensing diaphragms have the same structure and are positioned identically. The second pressure-sensing diaphragm is open to the fluid space on both its upper and lower sides, thus remaining unaffected by force and compensating for resistance drift caused by temperature. Furthermore, the resistance of the pressure-sensing resistor changes with temperature; this change in resistance on the second pressure-sensing diaphragm can also be used to measure temperature. When the fluid acts on the human-shaped elastic sheet, it deforms (both the vertical and curved sections bend). The change in resistance of the strain gauge converts the fluid velocity information into a change in resistance, which is then collected and transmitted via the wireless power supply kit.

[0041] The wireless power supply kit works as follows: An electromagnetic field of a specified frequency is emitted by an external device, received by the second coil 122 in the power supply module 12, and transmitted to the power supply circuit 123. Electrical energy is stored in the supercapacitor 124, and the power supply circuit 123 supplies power to the control module 11 and monitoring sensors. The first coil 112 in the control module 11 can act as an antenna to transmit data to external devices. External terminal devices collect and analyze data through the wireless transceiver module to monitor parameters such as blood pressure and flow rate.

[0042] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this disclosure is not limited to the described order of actions, because according to this disclosure, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this disclosure.

[0043] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the working process of the apparatus involved in the relevant steps of the method can be referred to the corresponding process in the foregoing apparatus embodiments, and will not be repeated here.

[0044] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0045] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A smart implantable wireless power supply kit, characterized in that, include: The system includes a control module, a power supply module, and a module support. Both the control module and the power supply module are mounted on the module support and fixed to the inner side of the blood vessel. The control module and the power supply module are electrically connected. The control module includes a first base, a first coil, and a processing module, transmitting data to an external terminal device via the first coil. The power supply module includes a second base, a second coil, a power supply circuit, and a supercapacitor, receiving power through the second coil and transmitting it to the power supply circuit, while the supercapacitor stores electrical energy.

2. The intelligent implantable wireless power supply kit as described in claim 1, characterized in that, The control module further includes a first base sealing plate and a first terminal block; the first base is a rectangular solid; the first coil is disposed on the top of the first base; a first receiving groove is provided at the bottom of the first base, the processing module is disposed inside the first receiving groove, and the first base sealing plate is sealed on the outside of the first receiving groove; a plurality of first terminal blocks are provided on the outward side of the first base sealing plate, and the first terminal blocks are electrically connected to the processing module; a connecting hole is provided at the top of the first base, and the first coil is electrically connected to the processing module through the connecting hole.

3. The intelligent implantable wireless power supply kit as described in claim 2, characterized in that, The power supply module further includes a second base cover plate and a second terminal block; the second base is a rectangular solid; the second coil is disposed on the top of the second base; a second receiving groove is provided at the bottom of the second base, the supercapacitor is disposed inside the second receiving groove, and the second base cover plate is sealed on the outside of the second receiving groove; a plurality of second terminal blocks are provided on the outward side of the second base cover plate, and the second terminal blocks are electrically connected to the power supply circuit; a recessed groove is provided on the inward side of the second base cover plate, and the power supply circuit is disposed in the recessed groove; a connecting hole is provided at the top of the second base, and the second coil is electrically connected to the power supply circuit through the connecting hole; the power supply circuit is electrically connected to the supercapacitor; power is received through the second coil, and data is transmitted to an external terminal device through the first coil.

4. The intelligent implantable wireless power supply kit as described in claim 1, characterized in that, The top surfaces of the first base and the second base are curved surfaces.

5. The intelligent implantable wireless power supply kit as described in claim 1, characterized in that, The first base and the second base are the same size.

6. The intelligent implantable wireless power supply kit as described in claim 1, characterized in that, The modular support frame includes a modular support frame, support connecting rods, and retractable elastic frames; the first base and the second base are sized to match the modular support frame, and the first base and the second base are installed inside the modular support frame; the length of the modular support frame is the same as the length of the support connecting rods, and the width of the modular support frame is greater than the width of the support connecting rods; the modular support frame includes three sets of modular support frames, support connecting rods, and four sets of retractable elastic frames, which are staggered with the modular support frames and support connecting rods; each set of modular support frames is coaxially arranged, and each set of support connecting rods is coaxially arranged.

7. The intelligent implantable wireless power supply kit as described in claim 6, characterized in that, The module support frame, the bracket connecting rod, and the retractable elastic frame are integrally formed.

8. The intelligent implantable wireless power supply kit as described in claim 7, characterized in that, The retractable elastic frame is provided with a wire, through which the control module and the power supply module are connected.

9. The intelligent implantable wireless power supply kit as described in claim 1, characterized in that, A monitoring sensor is mounted on the module support and is electrically connected to the control module. The monitoring sensor includes a third base, a first pressure-sensitive diaphragm, and a second pressure-sensitive diaphragm. The third base has a first pressure-sensitive groove, a second pressure-sensitive groove, and a rectangular through hole. The base is a rectangular solid. The first and second pressure-sensitive grooves are circular grooves with the same radial dimension. The first and second pressure-sensitive grooves are both located on the top surface of the third base and are arranged side by side along the long side of the top surface of the third base. The rectangular through hole is opened on the side of the third base, and the extension direction of the rectangular through hole is parallel to the short side of the third base. The rectangular through hole is located at the bottom of the second pressure-sensitive groove and communicates with it. The first pressure-sensitive diaphragm is sealed at the top of the first pressure-sensitive groove, and the second pressure-sensitive diaphragm is sealed at the top of the second pressure-sensitive groove.

10. The intelligent implantable wireless power supply kit as described in claim 9, characterized in that, The monitoring sensor also includes a flow velocity detection module, which comprises a human-shaped elastic sheet, a rectangular support, a strain resistor, and a circular through hole. The rectangular support is a rectangular hollow body with through holes at both ends, and through holes are provided on both the top and bottom sides of the rectangular support. The human-shaped elastic sheet is provided on both the left and right sides of the rectangular support, and the strain resistor is provided on the human-shaped elastic sheet. The size of the rectangular support matches the size of the rectangular through hole, and the rectangular support is disposed inside the rectangular through hole.

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