A safety protection device for neonatal magnetic resonance imaging

Abstract

The invention relates to a safety protection device for nuclear magnetic resonance examination of newborns, and in particular to the technical field of nuclear magnetic resonance equipment. The device comprises a resonance cabin fixedly connected to the upper surface of a base, an examination bed slidably connected to the inner cavity of the resonance cabin, a limiting mechanism provided in the top view of the examination bed, and a control system and the limiting mechanism wirelessly connected; the control system comprises an acquisition module for acquiring size and position information of various parts of a target, an analysis module connected to the acquisition module for determining a target state according to data acquired by the acquisition module, a processing module connected to the analysis module for processing analysis results of the analysis module and issuing control instructions, and an adjustment module connected to the analysis module for adjusting the processing process, thereby greatly improving the comfort and safety of the newborn in fixation.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear magnetic resonance equipment, and in particular to a safety protection device for nuclear magnetic resonance examination of newborns. Background Art

[0002] With the development of society, the level of medical technology has also achieved great improvement, and the survival rate of newborns has increased year by year. Scientific care for newborns in the neonatal period is particularly important. When performing magnetic resonance imaging on newborns, a common method is to place the newborns directly on the examination bed. This method cannot fix the newborns and is easy to roll over. Since the examination bed is a flat structure and there are no protective measures around it, the safety of the newborns cannot be guaranteed. The present invention greatly guarantees the safety of newborns through a limiting mechanism and a control system, and provides great comfort to the human body by automatically controlling the inflation and exhaust of high-pressure airflows of different groups of airbags.

[0003] China Patent Publication No.: CN209332058U discloses a nuclear magnetic resonance equipment technology field, and discloses a neonatal nuclear magnetic resonance examination protective device, including a base and a magnetic resonance headset, the upper surface of the base is fixedly connected with a resonance cabin, the inner cavity of the resonance cabin is slidably connected with an examination bed, and a limiting cavity is opened in the middle of the top view of the examination bed, and the outer walls on the left and right sides of the limiting cavity are glued and fixedly connected with soft foam plastic. The neonatal nuclear magnetic resonance examination protective device, through the design of the limiting cavity, soft foam plastic, sponge board, first fixing block, sub-buckle magic belt, second fixing block and mother buckle magic belt, can safely place the newborn on the examination bed, effectively limit and stabilize the newborn, ensure that the newborn will not roll over when doing magnetic resonance, and effectively solve the problem that the original inspection method is easy to cause the newborn to roll over and thus cause danger. It can be seen that the neonatal nuclear magnetic resonance examination protective device. There are the following problems: after the newborn's hands and legs are fixed by the magic belt, the newborn still has a lot of room for movement, which affects the examination of the newborn, and does not solve the problem of comfort and safety in the fixation of the newborn. Summary of the invention

[0004] To this end, the present invention provides a safety protection device for neonatal MRI examination, which is used to overcome the problem in the prior art that after the neonate's hands and legs are fixed by magic tape, the neonate still has a lot of room for movement, which affects the examination of the neonate, and does not solve the problem of comfort and safety in the fixation of the neonate.

[0005] To achieve the above object, the present invention provides a safety protection device for neonatal nuclear magnetic resonance examination.

[0006] The upper surface of the base is fixedly connected with a resonance cabin, the inner cavity of the resonance cabin is slidably connected with an examination bed, a limiting mechanism is provided in the top view of the examination bed, and the control system and the limiting mechanism are wirelessly connected;

[0007] The limiting mechanism includes a visual detector arranged on the examination bed, a head inflatable software arranged at the upper part of the limiting cavity and having an air pressure sensor inside, an inflating air pump and an exhaust air pump respectively connected to the head inflatable software through air pipes, and a head limiting cavity with an adjusting air valve and an electromagnetic switch on the air pipes, a plurality of body inflatable softwares arranged at the lower part of the limiting cavity and having an air pressure sensor inside, an inflating air pump and an exhaust air pump respectively connected to each body inflatable software through a plurality of air pipes, and a body limiting cavity with an adjusting air valve and an electromagnetic switch on the plurality of air pipes;

[0008] The control system includes an acquisition module for acquiring the pressure in the head inflatable soft body, the distance to the inner wall of the body limiting cavity, the width of the inner wall of the head limiting cavity, the squeezing area of ​​the head, the pressure in the head inflatable soft body, the activity expansion distance, and the size and position information of each target part; an analysis module connected to the acquisition module for determining the target state according to the data acquired by the acquisition module, and determining whether to adjust the expansion distance of the body inflatable soft body according to the comparison result of the expansion distance of the body inflatable soft body with the preset expansion distance of the body inflatable soft body; and an analysis module connected to the analysis module for processing the analysis result of the analysis module and issuing a control instruction, and controlling the expansion distance according to the warning. The processing module is connected to the analysis module and is used to adjust the processing process, and determines the pressure adjustment coefficient inside the head inflatable software according to the comparison result of the squeezing pressure difference of the head with the preset squeezing pressure difference of the head to adjust the pressure inside the head inflatable software, and determines the active expansion distance adjustment coefficient of the body inflatable software according to the comparison result of the expansion distance difference of the body inflatable software with the preset expansion distance difference of the body inflatable software to adjust the active expansion distance of the body inflatable software.

[0009] When the acquisition module acquires the specific data of the target state, the analysis module determines whether the target is lying flat based on the highest vertical distance from the bottom surface of the target in the body limiting cavity to the target body as the target height, and the analysis module determines whether the target is lying flat based on the comparison result between the target height and the preset lying height, wherein A is the target height, A0 is the preset lying height,

[0010] When A≤A0, the analysis module determines that the target is lying flat;

[0011] When A>A0, the analysis module determines that the target is lying on its side.

[0012] When the analysis module determines that the target is lying on its side, the analysis module calculates the warning expansion distance according to the relationship between the side-lying distance of the target side-lying part and the distance from the inner wall of the body limiting cavity, sets B=CD, and the processing module expands and clamps the target body according to the warning expansion distance and issues an alarm, wherein B is the warning expansion distance, C is the distance from the inner wall of the body limiting cavity, and D is the side-lying distance.

[0013] When the analysis module determines that the target is lying flat, the analysis module calculates the expansion distance E of the head inflatable soft body according to the relationship between the target head width G and the width F of the inner wall of the head limiting cavity, and sets E=FG. The analysis module determines whether to adjust the expansion distance of the head inflatable soft body according to the comparison result between the expansion distance of the head inflatable soft body and the expansion distance of the preset head inflatable soft body, wherein E0 is the expansion distance of the preset head inflatable soft body,

[0014] When E<E0, the analysis module determines that the head inflatable software does not contact the target head;

[0015] When E≥E0, the analysis module determines that the head inflatable software contacts the target head.

[0016] When the analysis module determines that the head inflatable software does not contact the target head, the adjustment module calculates the expansion distance difference of the head inflatable software according to the relationship between the expansion distance of the head inflatable software and the expansion distance of the preset head inflatable software, and sets △E=E0-E. The adjustment module determines the corresponding head inflatable software expansion distance adjustment coefficient according to the comparison result of the expansion distance difference of the head inflatable software and the expansion distance difference of the preset head inflatable software to adjust the expansion distance of the head inflatable software.

[0017] Wherein, △E is the expansion distance difference of the head inflatable software, and the adjustment module is provided with a first preset expansion distance difference of the head inflatable software △E1, a second preset expansion distance difference of the head inflatable software △E2, a first head inflatable software expansion distance adjustment coefficient H1, a second head inflatable software expansion distance adjustment coefficient H2 and a third head inflatable software expansion distance adjustment coefficient H3, wherein △E1<△E2, 1

[0018] When △E<△E1, the adjustment module selects the first head inflatable soft body expansion distance adjustment coefficient H1 to adjust the expansion distance of the head inflatable soft body;

[0019] When △E1≤△E≤△E2, the adjustment module selects the second head inflatable soft body expansion distance adjustment coefficient H2 to adjust the head inflatable soft body expansion distance;

[0020] ​When △E>△E2, the adjustment module selects the third head inflatable soft body expansion distance adjustment coefficient H3 to adjust the head inflatable soft body expansion distance;

[0021] When the adjustment module selects the ath head inflatable software expansion distance adjustment coefficient Ha to adjust the expansion distance of the head inflatable software, a=1, 2, 3 is set, and the adjustment module sets the expansion distance of the adjusted head inflatable software to E1, and sets E1=E×Ha.

[0022] When the analysis module determines that the head inflatable software contacts the target head, the analysis module calculates the squeezing force of the head inflatable software on the target head according to the squeezing area of ​​the head inflatable software on the target head and the pressure inside the head inflatable software, and sets J=K×L. The analysis module determines whether to adjust the pressure inside the head inflatable software according to the comparison result of the squeezing force of the head with the preset squeezing force of the head, wherein J is the squeezing force of the head, K is the squeezing area of ​​the head, L is the pressure inside the head inflatable software, and J0 is the preset squeezing force of the head.

[0023] When J≤J0, the analysis module determines not to adjust the pressure inside the head inflatable soft body;

[0024] When J>J0, the analysis module determines to adjust the pressure inside the head inflatable soft body.

[0025] When the analysis module determines to adjust the squeezing force of the target head, the adjustment module calculates the squeezing force difference of the head according to the relationship between the squeezing force of the head and the preset squeezing force of the head, sets △J=J-J0, and the adjustment module determines the pressure adjustment coefficient inside the corresponding head inflatable soft body according to the comparison result of the squeezing force difference of the head and the preset squeezing force difference of the head to adjust the pressure inside the head inflatable soft body.

[0026] Wherein, △J is the extrusion pressure difference of the head, and the adjustment module is provided with a first preset extrusion pressure difference of the head △J1, a second preset extrusion pressure difference of the head △J2, a pressure adjustment coefficient M1 inside the first head inflatable soft body, a pressure adjustment coefficient M2 inside the second head inflatable soft body, and a pressure adjustment coefficient M3 inside the third head inflatable soft body, wherein △J1<△J2, 0.4<M1<M2<M3<1,

[0027] When △J<△J1, the adjustment module selects the pressure adjustment coefficient M3 inside the third head inflatable soft body to adjust the pressure inside the head inflatable soft body;

[0028] When △J1≤△J≤△J2, the adjustment module selects the pressure adjustment coefficient M2 inside the second head inflatable soft body to adjust the pressure inside the head inflatable soft body;

[0029] When △J>△J2, the adjustment module selects the pressure adjustment coefficient M1 inside the first head inflatable soft body to adjust the pressure inside the head inflatable soft body;

[0030] When the adjustment module selects the pressure adjustment coefficient Mb inside the bth head inflatable software to adjust the pressure inside the head inflatable software, b=1, 2, 3 is set, and the adjustment module sets the pressure inside the head inflatable software after adjustment to L0, and sets L0=L×Mb.

[0031] After the adjustment module indirectly adjusts the squeezing force of the head by adjusting the pressure inside the head inflatable soft body, the analysis module calculates the expansion distance Q of the body inflatable soft body according to the relationship between the lying distance N of the target lying part and the distance C from the inner wall of the body limit cavity, and sets Q=CN. The processing module issues a control instruction to the body limit cavity to expand. The analysis module determines whether to adjust the expansion distance of the body inflatable soft body according to the comparison result between the expansion distance of the body inflatable soft body and the expansion distance of the preset body inflatable soft body, wherein Q0 is the expansion distance of the preset body inflatable soft body,

[0032] When Q<Q0, the analysis module determines that the body inflatable soft object does not contact the target body;

[0033] When Q≥Q0, the analysis module determines that the inflatable body is in contact with the target body.

[0034] When the analysis module determines that the inflatable body software has not contacted the target body, the adjustment module calculates the difference in the expansion distance of the inflatable body software according to the relationship between the expansion distance of the inflatable body software and the expansion distance of the preset inflatable body software, and sets △Q=Q0-Q. The adjustment module determines the corresponding expansion distance adjustment coefficient of the inflatable body software according to the comparison result of the expansion distance difference of the inflatable body software and the expansion distance difference of the preset inflatable body software, and adjusts the expansion distance of the inflatable body software.

[0035] Wherein, △Q is the expansion distance difference of the body inflatable soft body, and the adjustment module is provided with the expansion distance difference △Q1 of the first preset body inflatable soft body, the expansion distance difference △Q2 of the second preset body inflatable soft body, the expansion distance adjustment coefficient R1 of the first body inflatable soft body, the expansion distance adjustment coefficient R2 of the second body inflatable soft body, and the expansion distance adjustment coefficient R3 of the third body inflatable soft body, wherein △Q1<△Q2, 1<R1<R2<R3<2,

[0036] When △Q<△Q1, the adjustment module selects the expansion distance adjustment coefficient R1 of the first body inflatable soft body to adjust the expansion distance of the body inflatable soft body;

[0037] When △Q1≤△Q≤△Q2, the adjustment module selects the expansion distance adjustment coefficient R2 of the second body inflatable soft body to adjust the expansion distance of the body inflatable soft body;

[0038] When △Q>△Q2, the adjustment module selects the expansion distance adjustment coefficient R3 of the third body inflatable soft body to adjust the expansion distance of the body inflatable soft body;

[0039] When the adjustment module selects the expansion distance adjustment coefficient Rc of the cth body inflatable soft body to adjust the expansion distance of the body inflatable soft body, c=1, 2, 3 is set, and the adjustment module sets the expansion distance of the adjusted body inflatable soft body as Q1, and sets Q1=Q×Rc.

[0040] When the analysis module determines that the inflatable body software contacts the target body, the processing module continues to inflate to obtain the active expansion distance S, the analysis module performs odd and even odd and even cyclic numbering on the multiple inflatable body softwares in the body limiting cavity, the processing module inflates all the odd-numbered inflatable body softwares, and the expansion distance is the active expansion distance. When all the odd-numbered inflatable body softwares are synchronously expanded to the active expansion distance, the processing module exhausts and contracts all the odd-numbered inflatable body softwares to the previous state, and at the same time, the processing module inflates all the even-numbered inflatable body softwares, and contracts when the expansion distance is the active expansion distance, and the odd-numbered and even-numbered inflatable body softwares alternately perform the previous steps.

[0041] Compared with the prior art, the beneficial effect of the present invention lies in that a resonance cabin is fixedly connected to the upper surface of the base, an examination bed is slidably connected to the inner cavity of the resonance cabin, a limiting mechanism is provided in the top view of the examination bed, the limiting mechanism includes a head limiting cavity and a body limiting cavity, a control system and the limiting mechanism are wirelessly connected, the control system includes an acquisition module for acquiring size and position information of target parts, an analysis module connected to the acquisition module for determining the target state according to data acquired by the acquisition module, a processing module connected to the analysis module for processing the results of the analysis of the analysis module and issuing control instructions, and an adjustment module connected to the analysis module for adjusting the processing process, wherein the acquisition module acquires the pressure acquired by the air pressure sensor, the distance of the inner wall of the body limiting cavity, the width of the inner wall of the head limiting cavity, the squeezing area of ​​the head, the pressure inside the head inflatable soft body, the active expansion distance and the size and position information of the target parts acquired by the visual detector, and each inflatable soft body is provided with an air pressure sensor, which greatly improves the comfort and safety of the fixation of the newborn.

[0042] Furthermore, when the acquisition module obtains specific data of the target state, the analysis module determines whether the target is lying flat based on the comparison result of the target height and the preset lying height. By comparing the target height with the preset lying height, clamping protection is achieved for the dangerous state of the newborn, which greatly improves the comfort and safety of the newborn in fixation.

[0043] Furthermore, when the analysis module determines that the target is lying on its side, the processing module expands and clamps the target body according to the warning expansion distance and issues an alarm. The clamping prevents the newborn from falling and the alarm reminds the guardian to protect the newborn, thereby greatly improving the comfort and safety of the newborn during fixation.

[0044] Furthermore, when the analysis module determines that the target is lying flat, the analysis module determines whether to adjust the expansion distance of the head inflatable software based on a comparison result of the expansion distance of the head inflatable software with the expansion distance of the preset head inflatable software. By comparing the expansion distance of the head inflatable software with the expansion distance of the preset head inflatable software, the expansion distance of the head inflatable software is adjusted, thereby greatly improving the comfort and safety of the newborn in fixation.

[0045] Furthermore, when the analysis module determines that the head inflatable software does not contact the target head, the adjustment module determines the corresponding head inflatable software expansion distance adjustment coefficient to adjust the expansion distance of the head inflatable software according to the comparison result of the expansion distance difference of the head inflatable software and the expansion distance difference of the preset head inflatable software. By comparing the expansion distance difference of the head inflatable software with the expansion distance difference of the preset head inflatable software, the expansion distance of the head inflatable software is adjusted by the corresponding head inflatable software expansion distance adjustment coefficient, which greatly improves the comfort and safety of newborn fixation.

[0046] Furthermore, when the analysis module determines that the head inflatable software is in contact with the target head, the analysis module determines whether to adjust the pressure inside the head inflatable software based on the comparison result of the squeezing pressure of the head with the preset head squeezing pressure. By comparing the squeezing pressure of the head with the preset head squeezing pressure, the pressure inside the head inflatable software is adjusted, which greatly improves the comfort and safety of the newborn in fixation.

[0047] Furthermore, when the analysis module determines that the squeezing pressure on the target head is to be adjusted, the adjustment module determines the pressure adjustment coefficient inside the corresponding head inflatable software according to the comparison result of the squeezing pressure difference of the head with the squeezing pressure difference of the preset head, and adjusts the pressure inside the head inflatable software. By comparing the squeezing pressure difference of the head with the squeezing pressure difference of the preset head, the pressure adjustment coefficient inside the head inflatable software is used to adjust the pressure inside the head inflatable software, which greatly improves the comfort and safety of the newborn in fixation.

[0048] Furthermore, the adjustment module indirectly adjusts the squeezing force of the head by adjusting the pressure inside the head inflatable software, and then the analysis module determines whether to adjust the expansion distance of the body inflatable software based on the comparison result of the expansion distance of the body inflatable software with the expansion distance of the preset body inflatable software. By comparing the expansion distance of the body inflatable software with the expansion distance of the preset body inflatable software, the expansion distance of the body inflatable software is adjusted, which greatly improves the comfort and safety of the newborn in fixation.

[0049] Furthermore, when the analysis module determines that the inflatable body software has not contacted the target body, the adjustment module determines the expansion distance adjustment coefficient of the corresponding inflatable body software according to the comparison result of the expansion distance difference of the inflatable body software with the expansion distance difference of the preset inflatable body software, and adjusts the expansion distance of the inflatable body software. By comparing the expansion distance difference of the inflatable body software with the expansion distance difference of the preset inflatable body software, the expansion distance of the inflatable body software is adjusted by the expansion distance adjustment coefficient of the corresponding inflatable body software, which greatly improves the comfort and safety of the fixation of the newborn.

[0050] Furthermore, when the analysis module determines that the inflatable body software has contacted the target body, the processing module deflates all the odd-numbered inflatable body software and shrinks them to the previous state, and at the same time, the processing module inflates all the even-numbered inflatable body software and shrinks them when the expansion distance is the active expansion distance. The odd-numbered and even-numbered inflatable body software alternately perform the previous steps, and by comparing the expansion distance difference of the inflatable body software with the expansion distance difference of the preset inflatable body software, the expansion distance of the inflatable body software is adjusted by the expansion distance adjustment coefficient of the corresponding inflatable body software, thereby greatly improving the comfort and safety of the fixation of the newborn. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a front view structural schematic diagram of the safety protection device for nuclear magnetic resonance examination of newborns according to the present invention;

[0052] Figure 2This is a schematic diagram of the top view of the safety protection device for neonatal nuclear magnetic resonance examination according to the present invention;

[0053] Figure 3 This is a schematic diagram of the structure of the body limiting cavity of the safety protection device for neonatal nuclear magnetic resonance examination according to the present invention;

[0054] Figure 4 This is a schematic diagram of the head limiting cavity structure of the safety protection device for neonatal nuclear magnetic resonance examination according to the present invention;

[0055] Figure 5 It is a control system logic box of the safety protection device for neonatal nuclear magnetic resonance examination according to the present invention;

[0056] Description of reference numerals in the figures:

[0057] 1. Base, 2. Resonance cabin, 3. Examination bed, 4. Limiting mechanism, 5. Body limiting cavity, 501. Body inflatable software, 502. One-way air inlet valve, 503. One-way air outlet valve, 504. Solenoid switch, 505. Inflating air pump, 506. Exhaust air pump, 6. Head limiting cavity, 601. Head inflatable software. DETAILED DESCRIPTION

[0058] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0059] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0060] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0061] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] See also Figure 1 As shown, it is a front view structural schematic diagram of the safety protection device for neonatal MRI examination of the present invention; please refer to Figure 2 As shown, it is a schematic diagram of the top view of the safety protection device for neonatal MRI examination of the present invention; please refer to Figure 3 As shown, it is a schematic diagram of the body limiting cavity structure of the safety protection device for neonatal nuclear magnetic resonance examination of the present invention; please refer to Figure 4 As shown, it is a schematic diagram of the head limit cavity structure of the safety protection device for neonatal MRI examination of the present invention; please refer to Figure 5 As shown, it is a control system logic block diagram of the safety protection device for neonatal nuclear magnetic resonance examination of the present invention.

[0063] The safety protection device for neonatal nuclear magnetic resonance examination according to the embodiment of the present invention comprises a base,

[0064] The upper surface of the base is fixedly connected with a resonance cabin, the inner cavity of the resonance cabin is slidably connected with an examination bed, and a limit mechanism and a control system wirelessly connected to the limit mechanism are provided in the top view of the examination bed;

[0065] The limiting mechanism includes a visual detector arranged on the examination bed, a head inflatable software with an air pressure sensor arranged inside the upper part of the limiting cavity, an inflatable air pump and an exhaust air pump respectively connected to the head inflatable software through air pipes, and a head limiting cavity with an adjusting air valve and an electromagnetic switch on the air pipes, and a plurality of body inflatable softwares with an air pressure sensor arranged inside the lower part of the limiting cavity, an inflatable air pump and an exhaust air pump respectively connected to each body inflatable software through a plurality of air pipes, and a body limiting cavity with an adjusting air valve and an electromagnetic switch on the plurality of air pipes;

[0066] The control system includes an acquisition module for acquiring the pressure inside the head inflatable soft body, the distance from the inner wall of the body limit cavity, the width of the inner wall of the head limit cavity, the squeezing area of ​​the head, the pressure inside the head inflatable soft body, the active expansion distance, and the size and position information of each target part; an analysis module connected to the acquisition module for determining the target state according to the data acquired by the acquisition module, and determining whether to adjust the expansion distance of the body inflatable soft body according to the comparison result of the expansion distance of the body inflatable soft body with the preset expansion distance of the body inflatable soft body; and an analysis module connected to the analysis module for processing the analysis result of the analysis module and issuing a control instruction, and adjusting the expansion distance according to the warning expansion distance. A processing module is provided for inflating and clamping the target body and giving an alarm, and for alternately inflating and contracting the inflatable body software with single and double numbers in single and double groups; a processing module is connected to the analysis module and is used to adjust the processing process; a pressure adjustment coefficient inside the head inflatable software is determined according to the comparison result of the squeezing pressure difference of the head with the preset squeezing pressure difference of the head, and the pressure inside the head inflatable software is adjusted; a corresponding active expansion distance adjustment coefficient of the body inflatable software is determined according to the comparison result of the expansion distance difference of the body inflatable software with the preset expansion distance difference of the body inflatable software, and the active expansion distance of the body inflatable software is adjusted by the adjustment module.

[0067] Specifically, a resonance cabin is fixedly connected to the upper surface of the base, an examination bed is slidably connected to the inner cavity of the resonance cabin, a limiting mechanism is provided in the top view of the examination bed, the limiting mechanism includes a head limiting cavity and a body limiting cavity, the control system and the limiting mechanism are wirelessly connected, the control system includes an acquisition module for acquiring size and position information of various parts of the target, an analysis module connected to the acquisition module for determining the target state according to the data acquired by the acquisition module, a processing module connected to the analysis module for processing the results of the analysis by the analysis module and issuing control instructions, and an adjustment module connected to the analysis module for adjusting the processing process, wherein the acquisition module acquires the pressure collected by the air pressure sensor, the distance to the inner wall of the body limiting cavity, the width of the inner wall of the head limiting cavity, the extrusion area of ​​the head, the pressure inside the head inflatable soft body, the active expansion distance and the size and position information of various parts of the target collected by the visual detector, and an air pressure sensor is arranged inside each inflatable soft body, which greatly improves the comfort and safety of the fixation of the newborn.

[0068] In the safety protection device for neonatal nuclear magnetic resonance examination according to the embodiment of the present invention, when the acquisition module acquires specific data of the target state, the analysis module uses the highest vertical distance from the bottom surface of the target in the body limiting cavity to the target body as the target height, and the analysis module determines whether the target is lying flat according to the comparison result between the target height and the preset lying height, wherein A is the target height, A0 is the preset lying height,

[0069] When A≤A0, the analysis module determines that the target is lying flat;

[0070] When A>A0, the analysis module determines that the target is lying on its side.

[0071] Specifically, when the acquisition module obtains the specific data of the target state, the analysis module determines whether the target is lying flat based on the comparison result of the target height and the preset lying height. By comparing the target height with the preset lying height, clamping protection is achieved for the dangerous state of the newborn, which greatly improves the comfort and safety of the newborn in fixation.

[0072] The embodiment of the present invention is a safety protection device for neonatal nuclear magnetic resonance examination. When the analysis module determines that the target is lying on its side, the analysis module calculates the warning expansion distance based on the relationship between the lying distance of the target lying part and the distance to the inner wall of the body limiting cavity, sets B=CD, and the processing module expands and clamps the target body according to the warning expansion distance and issues an alarm, wherein B is the warning expansion distance, C is the distance to the inner wall of the body limiting cavity, and D is the lying distance.

[0073] Specifically, when the analysis module determines that the target is lying on its side, the processing module expands and clamps the target body according to the warning expansion distance and issues an alarm. By clamping, the newborn is prevented from falling, and the alarm reminds the guardian to protect the newborn, greatly improving the comfort and safety of the newborn during fixation.

[0074] In the safety protection device for neonatal nuclear magnetic resonance examination according to the embodiment of the present invention, when the analysis module determines that the target is lying flat, the analysis module calculates the expansion distance E of the head inflatable soft body according to the relationship between the target head width G and the width F of the inner wall of the head limiting cavity, and sets E=FG. The analysis module determines whether to adjust the expansion distance of the head inflatable soft body according to the comparison result of the expansion distance of the head inflatable soft body and the expansion distance of the preset head inflatable soft body, wherein E0 is the expansion distance of the preset head inflatable soft body,

[0075] When E<E0, the analysis module determines that the head inflation software does not contact the target head;

[0076] When E≥E0, the analysis module determines that the head inflatable software contacts the target head.

[0077] Specifically, when the analysis module determines that the target is lying flat, the analysis module determines whether to adjust the expansion distance of the head inflatable software based on the comparison result of the expansion distance of the head inflatable software with the expansion distance of the preset head inflatable software. By comparing the expansion distance of the head inflatable software with the expansion distance of the preset head inflatable software, the expansion distance of the head inflatable software is adjusted, which greatly improves the comfort and safety of the newborn in fixation.

[0078] The embodiment of the present invention is a safety protection device for a newborn's nuclear magnetic resonance examination. When the analysis module determines that the head inflatable software does not contact the target head, the adjustment module calculates the difference in the expansion distance of the head inflatable software according to the relationship between the expansion distance of the head inflatable software and the expansion distance of the preset head inflatable software, and sets △E=E0-E. The adjustment module determines the corresponding head inflatable software expansion distance adjustment coefficient according to the comparison result of the expansion distance difference of the head inflatable software and the expansion distance difference of the preset head inflatable software to adjust the expansion distance of the head inflatable software.

[0079] Wherein, △E is the expansion distance difference of the head inflatable software, and the adjustment module is provided with a first preset expansion distance difference of the head inflatable software △E1, a second preset expansion distance difference of the head inflatable software △E2, a first head inflatable software expansion distance adjustment coefficient H1, a second head inflatable software expansion distance adjustment coefficient H2 and a third head inflatable software expansion distance adjustment coefficient H3, wherein △E1<△E2, 1

[0080] When △E<△E1, the adjustment module selects the first head inflatable soft body expansion distance adjustment coefficient H1 to adjust the expansion distance of the head inflatable soft body;

[0081] When △E1≤△E≤△E2, the adjustment module selects the second head inflatable soft body expansion distance adjustment coefficient H2 to adjust the head inflatable soft body expansion distance;

[0082] When △E>△E2, the adjustment module selects the third head inflatable soft body expansion distance adjustment coefficient H3 to adjust the head inflatable soft body expansion distance;

[0083] When the adjustment module selects the ath head inflatable software expansion distance adjustment coefficient Ha to adjust the expansion distance of the head inflatable software, a=1, 2, 3 is set, and the adjustment module sets the expansion distance of the adjusted head inflatable software to E1, and sets E1=E×Ha.

[0084] Specifically, when the analysis module determines that the head inflatable software does not contact the target head, the adjustment module determines the corresponding head inflatable software expansion distance adjustment coefficient to adjust the expansion distance of the head inflatable software based on the comparison result of the expansion distance difference of the head inflatable software with the expansion distance difference of the preset head inflatable software. By comparing the expansion distance difference of the head inflatable software with the expansion distance difference of the preset head inflatable software, the expansion distance of the head inflatable software is adjusted by the corresponding head inflatable software expansion distance adjustment coefficient, which greatly improves the comfort and safety of newborn fixation.

[0085] ​The embodiment of the present invention is a safety protection device for a newborn's nuclear magnetic resonance examination. When the analysis module determines that the head inflatable software contacts the target head, the analysis module calculates the squeezing force of the head inflatable software on the target head according to the squeezing area of ​​the head inflatable software on the target head and the pressure inside the head inflatable software, and sets J=K×L. The analysis module determines whether to adjust the pressure inside the head inflatable software according to the comparison result of the squeezing force of the head with the preset squeezing force of the head, wherein J is the squeezing force of the head, K is the squeezing area of ​​the head, L is the pressure inside the head inflatable software, and J0 is the preset squeezing force of the head.

[0086] When J≤J0, the analysis module determines not to adjust the pressure inside the head inflatable soft body;

[0087] When J>J0, the analysis module determines to adjust the pressure inside the head inflatable soft body.

[0088] Specifically, when the analysis module determines that the head inflatable software contacts the target head, the analysis module determines whether to adjust the pressure inside the head inflatable software based on the comparison result of the squeezing pressure of the head with the preset head squeezing pressure. By comparing the squeezing pressure of the head with the preset head squeezing pressure, the pressure inside the head inflatable software is adjusted, which greatly improves the comfort and safety of the newborn in fixation.

[0089] The embodiment of the present invention is a safety protection device for a newborn's nuclear magnetic resonance examination. When the analysis module determines that the squeezing force on the target head is to be adjusted, the adjustment module calculates the squeezing force difference of the head according to the relationship between the squeezing force on the head and the preset squeezing force on the head, sets △J=J-J0, and the adjustment module determines the pressure adjustment coefficient inside the corresponding head inflatable soft body according to the comparison result of the squeezing force difference on the head and the preset squeezing force difference on the head to adjust the pressure inside the head inflatable soft body.

[0090] Among them, △J is the extrusion pressure difference of the head, and the adjustment module is provided with a first preset extrusion pressure difference of the head △J1, a second preset extrusion pressure difference of the head △J2, a pressure adjustment coefficient M1 inside the first head inflatable soft body, a pressure adjustment coefficient M2 inside the second head inflatable soft body, and a pressure adjustment coefficient M3 inside the third head inflatable soft body, wherein △J1<△J2, 0.4<M1<M2<M3<1,

[0091] When △J<△J1, the adjustment module selects the pressure adjustment coefficient M3 inside the third head inflatable soft body to adjust the pressure inside the head inflatable soft body;

[0092] When △J1≤△J≤△J2, the adjustment module selects the pressure adjustment coefficient M2 inside the second head inflatable soft body to adjust the pressure inside the head inflatable soft body;

[0093] When △J>△J2, the adjustment module selects the pressure adjustment coefficient M1 inside the first head inflatable soft body to adjust the pressure inside the head inflatable soft body;

[0094] When the adjustment module selects the pressure adjustment coefficient Mb inside the bth head inflatable software to adjust the pressure inside the head inflatable software, b=1, 2, 3 is set, and the adjustment module sets the pressure inside the head inflatable software after adjustment to L0, and sets L0=L×Mb.

[0095] Specifically, when the analysis module determines that the squeezing pressure on the target head is to be adjusted, the adjustment module determines the pressure adjustment coefficient inside the corresponding head inflatable software according to the comparison result of the squeezing pressure difference of the head with the squeezing pressure difference of the preset head, and adjusts the pressure inside the head inflatable software. By comparing the squeezing pressure difference of the head with the squeezing pressure difference of the preset head, the pressure adjustment coefficient inside the head inflatable software is used to adjust the pressure inside the head inflatable software, which greatly improves the comfort and safety of the newborn in fixation.

[0096] The embodiment of the present invention is a safety protection device for nuclear magnetic resonance examination of newborns. After the adjustment module indirectly adjusts the squeezing force of the head by adjusting the pressure inside the head inflatable soft body, the analysis module calculates the expansion distance Q of the body inflatable soft body according to the relationship between the lying distance N of the target lying part and the distance C from the inner wall of the body limit cavity, and sets Q=CN. The processing module issues a control instruction to the body limit cavity to expand. The analysis module determines whether to adjust the expansion distance of the body inflatable soft body according to the comparison result between the expansion distance of the body inflatable soft body and the expansion distance of the preset body inflatable soft body, wherein Q0 is the expansion distance of the preset body inflatable soft body.

[0097] When Q<Q0, the analysis module determines that the body inflatable soft object does not contact the target body;

[0098] When Q≥Q0, the analysis module determines that the inflatable soft body contacts the target body.

[0099] Specifically, the adjustment module indirectly adjusts the squeezing force of the head by adjusting the pressure inside the head inflatable software, and then the analysis module determines whether to adjust the expansion distance of the body inflatable software based on the comparison result of the expansion distance of the body inflatable software with the expansion distance of the preset body inflatable software. By comparing the expansion distance of the body inflatable software with the expansion distance of the preset body inflatable software, the expansion distance of the body inflatable software is adjusted, which greatly improves the comfort and safety of the newborn in fixation.

[0100] The embodiment of the present invention is a safety protection device for a newborn nuclear magnetic resonance examination. When the analysis module determines that the body inflatable software does not contact the target body, the adjustment module calculates the expansion distance difference of the body inflatable software according to the relationship between the expansion distance of the body inflatable software and the expansion distance of the preset body inflatable software, and sets △Q=Q0-Q. The adjustment module determines the corresponding expansion distance adjustment coefficient of the body inflatable software according to the comparison result of the expansion distance difference of the body inflatable software and the expansion distance difference of the preset body inflatable software, and adjusts the expansion distance of the body inflatable software.

[0101] Wherein, △Q is the expansion distance difference of the body inflatable soft body, and the adjustment module is provided with the expansion distance difference △Q1 of the first preset body inflatable soft body, the expansion distance difference △Q2 of the second preset body inflatable soft body, the expansion distance adjustment coefficient R1 of the first body inflatable soft body, the expansion distance adjustment coefficient R2 of the second body inflatable soft body, and the expansion distance adjustment coefficient R3 of the third body inflatable soft body, wherein △Q1<△Q2, 1<R1<R2<R3<2,

[0102] When △Q<△Q1, the adjustment module selects the expansion distance adjustment coefficient R1 of the first body inflatable soft body to adjust the expansion distance of the body inflatable soft body;

[0103] When △Q1≤△Q≤△Q2, the adjustment module selects the expansion distance adjustment coefficient R2 of the second body inflatable soft body to adjust the expansion distance of the body inflatable soft body;

[0104] When △Q>△Q2, the adjustment module selects the expansion distance adjustment coefficient R3 of the third body inflatable soft body to adjust the expansion distance of the body inflatable soft body;

[0105] When the adjustment module selects the expansion distance adjustment coefficient Rc of the cth body inflatable soft body to adjust the expansion distance of the body inflatable soft body, c=1, 2, 3 is set, and the adjustment module sets the expansion distance of the adjusted body inflatable soft body to Q1, and sets Q1=Q×Rc.

[0106] Specifically, when the analysis module determines that the inflatable body software has not contacted the target body, the adjustment module determines the corresponding expansion distance adjustment coefficient of the inflatable body software according to the comparison result of the expansion distance difference of the inflatable body software with the expansion distance difference of the preset inflatable body software, and adjusts the expansion distance of the inflatable body software. By comparing the expansion distance difference of the inflatable body software with the expansion distance difference of the preset inflatable body software, the expansion distance of the inflatable body software is adjusted by the expansion distance adjustment coefficient of the corresponding inflatable body software, which greatly improves the comfort and safety of the newborn in fixation.

[0107] The embodiment of the present invention is a safety protection device for magnetic resonance imaging of newborns. When the analysis module determines that the inflatable body software contacts the target body, the processing module continues to inflate to obtain an active expansion distance S. The analysis module performs odd and even odd and even cycle numbering on a plurality of inflatable body softwares in the body limiting cavity. The processing module inflates and expands all the odd-numbered inflatable body softwares, and the expansion distance is the active expansion distance. When all the odd-numbered inflatable body softwares are synchronously expanded to the active expansion distance, the processing module exhausts and contracts all the odd-numbered inflatable body softwares to the previous state. At the same time, the processing module inflates and expands all the even-numbered inflatable body softwares, and contracts when the expansion distance is the active expansion distance. The odd-numbered and even-numbered inflatable body softwares perform the previous steps alternately.

[0108] Specifically, when the analysis module determines that the inflatable body software has contacted the target body, the processing module deflates all the odd-numbered inflatable body software and shrinks them to their previous state. At the same time, the processing module inflates all the even-numbered inflatable body software and shrinks them when the expansion distance is the active expansion distance. The odd-numbered and even-numbered inflatable body software alternately perform the previous steps. By comparing the expansion distance difference of the body inflatable software with the expansion distance difference of the preset body inflatable software, the expansion distance of the body inflatable software is adjusted by the expansion distance adjustment coefficient of the corresponding body inflatable software, which greatly improves the comfort and safety of the newborn in fixation.

[0109] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0110] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety protection device for neonatal nuclear magnetic resonance examination, characterized in that: include: The upper surface of the base is fixedly connected with a resonance cabin, the inner cavity of the resonance cabin is slidably connected with an examination bed, and a limit mechanism and a control system wirelessly connected to the limit mechanism are provided in the top view of the examination bed; The limiting mechanism includes a head limiting cavity, a body limiting cavity, a visual detector arranged on the examination bed, a head inflatable software arranged at the upper part of the head limiting cavity and provided with an air pressure sensor, and a plurality of body inflatable softwares arranged at the lower part of the body limiting cavity and provided with an air pressure sensor; an inflatable air pump and an exhaust air pump are respectively connected to each body inflatable software through a plurality of air pipes, and the plurality of air pipes are respectively provided with an adjusting air valve and an electromagnetic switch, and the inflatable air pump and the exhaust air pump are respectively connected to the head inflatable software through air pipes, and the air pipes are respectively provided with an adjusting air valve and an electromagnetic switch; The control system includes an acquisition module for acquiring the pressure inside the head inflatable soft body, the distance from the inner wall of the body limit cavity, the width of the inner wall of the head limit cavity, the squeezing area of ​​the head, the pressure inside the head inflatable soft body, the active expansion distance, and the size and position information of each target part; an analysis module connected to the acquisition module for determining the target state according to the data acquired by the acquisition module, and determining whether to adjust the expansion distance of the body inflatable soft body according to the comparison result of the expansion distance of the body inflatable soft body with the expansion distance of the preset body inflatable soft body; a processing module connected to the analysis module for processing the analysis result of the analysis module and issuing control instructions, expanding and clamping the target body according to the warning expansion distance and alarming, and inflating and contracting the body inflatable soft body alternately in single group and double group according to the double number of the quilt; An adjustment module connected to the analysis module for adjusting the processing process, determining a corresponding pressure adjustment coefficient inside the head inflatable soft body according to a comparison result of the squeezing pressure difference of the head with a preset squeezing pressure difference of the head to adjust the pressure inside the head inflatable soft body, and determining a corresponding activity expansion distance adjustment coefficient of the body inflatable soft body according to a comparison result of the expansion distance difference of the body inflatable soft body with a preset expansion distance difference of the body inflatable soft body to adjust the activity expansion distance of the body inflatable soft body; When the acquisition module acquires the specific data of the target state, the analysis module determines whether the target is lying flat based on the highest vertical distance from the bottom surface of the target in the body limiting cavity to the target body as the target height, and the analysis module determines whether the target is lying flat based on the comparison result between the target height and the preset lying height, wherein A is the target height, A0 is the preset lying height, When A≤A0, the analysis module determines that the target is lying flat; When A>A0, the analysis module determines that the target is lying on its side.

2. The safety protection device for neonatal nuclear magnetic resonance examination according to claim 1, characterized in that: When the analysis module determines that the target is lying on its side, the analysis module calculates the warning expansion distance according to the relationship between the side-lying distance of the target side-lying part and the distance from the inner wall of the body limiting cavity, sets B=CD, and the processing module expands and clamps the target body according to the warning expansion distance and issues an alarm, wherein B is the warning expansion distance, C is the distance from the inner wall of the body limiting cavity, and D is the side-lying distance.

3. The safety protection device for neonatal nuclear magnetic resonance examination according to claim 2 is characterized in that: When the analysis module determines that the target is lying flat, the analysis module calculates the expansion distance E of the head inflatable soft body according to the relationship between the target head width G and the width F of the inner wall of the head limiting cavity, and sets E=FG. The analysis module determines whether to adjust the expansion distance of the head inflatable soft body according to the comparison result between the expansion distance of the head inflatable soft body and the expansion distance of the preset head inflatable soft body, wherein E0 is the expansion distance of the preset head inflatable soft body, When E<E0, the analysis module determines that the head inflatable software does not contact the target head; When E≥E0, the analysis module determines that the head inflatable software contacts the target head.

4. The safety protection device for neonatal nuclear magnetic resonance examination according to claim 3, characterized in that: When the analysis module determines that the head inflatable software does not contact the target head, the adjustment module calculates the expansion distance difference of the head inflatable software according to the relationship between the expansion distance of the head inflatable software and the expansion distance of the preset head inflatable software, and sets △E=E0-E. The adjustment module determines the corresponding head inflatable software expansion distance adjustment coefficient according to the comparison result of the expansion distance difference of the head inflatable software and the expansion distance difference of the preset head inflatable software to adjust the expansion distance of the head inflatable software. Wherein, △E is the expansion distance difference of the head inflatable software, and the adjustment module is provided with a first preset expansion distance difference of the head inflatable software △E1, a second preset expansion distance difference of the head inflatable software △E2, a first head inflatable software expansion distance adjustment coefficient H1, a second head inflatable software expansion distance adjustment coefficient H2 and a third head inflatable software expansion distance adjustment coefficient H3, wherein △E1<△E2, 1<H1<H2<H3<1.5, When △E<△E1, the adjustment module selects the first head inflatable soft body expansion distance adjustment coefficient H1 to adjust the expansion distance of the head inflatable soft body; When △E1≤△E≤△E2, the adjustment module selects the second head inflatable soft body expansion distance adjustment coefficient H2 to adjust the head inflatable soft body expansion distance; When △E>△E2, the adjustment module selects the third head inflatable soft body expansion distance adjustment coefficient H3 to adjust the head inflatable soft body expansion distance; When the adjustment module selects the ath head inflatable software expansion distance adjustment coefficient Ha to adjust the expansion distance of the head inflatable software, a=1, 2, 3 is set, and the adjustment module sets the expansion distance of the adjusted head inflatable software to E1, and sets E1=E×Ha.

5. The safety protection device for neonatal nuclear magnetic resonance examination according to claim 4, characterized in that: When the analysis module determines that the head inflatable software contacts the target head, the analysis module calculates the squeezing force of the head inflatable software on the target head according to the squeezing area of ​​the head inflatable software on the target head and the pressure inside the head inflatable software, and sets J=K×L. The analysis module determines whether to adjust the pressure inside the head inflatable software according to the comparison result of the squeezing force of the head with the preset squeezing force of the head, wherein J is the squeezing force of the head, K is the squeezing area of ​​the head, L is the pressure inside the head inflatable software, and J0 is the preset squeezing force of the head. When J≤J0, the analysis module determines not to adjust the pressure inside the head inflatable soft body; When J>J0, the analysis module determines to adjust the pressure inside the head inflatable soft body.

6. The safety protection device for neonatal nuclear magnetic resonance examination according to claim 5, characterized in that: When the analysis module determines to adjust the squeezing force of the target head, the adjustment module calculates the squeezing force difference of the head according to the relationship between the squeezing force of the head and the preset squeezing force of the head, sets △J=J-J0, and the adjustment module determines the pressure adjustment coefficient inside the corresponding head inflatable soft body according to the comparison result of the squeezing force difference of the head and the preset squeezing force difference of the head to adjust the pressure inside the head inflatable soft body. Wherein, △J is the extrusion pressure difference of the head, and the adjustment module is provided with a first preset extrusion pressure difference of the head △J1, a second preset extrusion pressure difference of the head △J2, a pressure adjustment coefficient M1 inside the first head inflatable soft body, a pressure adjustment coefficient M2 inside the second head inflatable soft body, and a pressure adjustment coefficient M3 inside the third head inflatable soft body, wherein △J1<△J2, 0.4<M1<M2<M3<1, When △J<△J1, the adjustment module selects the pressure adjustment coefficient M3 inside the third head inflatable soft body to adjust the pressure inside the head inflatable soft body; When △J1≤△J≤△J2, the adjustment module selects the pressure adjustment coefficient M2 inside the second head inflatable soft body to adjust the pressure inside the head inflatable soft body; When △J>△J2, the adjustment module selects the pressure adjustment coefficient M1 inside the first head inflatable soft body to adjust the pressure inside the head inflatable soft body; When the adjustment module selects the pressure adjustment coefficient Mb inside the bth head inflatable software to adjust the pressure inside the head inflatable software, b=1, 2, 3 is set, and the adjustment module sets the pressure inside the head inflatable software after adjustment to L0, and sets L0=L×Mb.

7. The safety protection device for neonatal nuclear magnetic resonance examination according to claim 6, characterized in that: After the adjustment module indirectly adjusts the squeezing force of the head by adjusting the pressure inside the head inflatable soft body, the analysis module calculates the expansion distance Q of the body inflatable soft body according to the relationship between the lying distance N of the target lying part and the distance C from the inner wall of the body limit cavity, and sets Q=CN. The processing module issues a control instruction to the body limit cavity to expand. The analysis module determines whether to adjust the expansion distance of the body inflatable soft body according to the comparison result between the expansion distance of the body inflatable soft body and the expansion distance of the preset body inflatable soft body, wherein Q0 is the expansion distance of the preset body inflatable soft body. When Q<Q0, the analysis module determines that the body inflatable soft object does not contact the target body; When Q≥Q0, the analysis module determines that the inflatable body is in contact with the target body.

8. The safety protection device for neonatal nuclear magnetic resonance examination according to claim 7, characterized in that: When the analysis module determines that the inflatable body software has not contacted the target body, the adjustment module calculates the difference in the expansion distance of the inflatable body software according to the relationship between the expansion distance of the inflatable body software and the expansion distance of the preset inflatable body software, and sets △Q=Q0-Q. The adjustment module determines the corresponding expansion distance adjustment coefficient of the inflatable body software according to the comparison result of the expansion distance difference of the inflatable body software and the expansion distance difference of the preset inflatable body software, and adjusts the expansion distance of the inflatable body software. Wherein, △Q is the expansion distance difference of the body inflatable soft body, and the adjustment module is provided with the expansion distance difference △Q1 of the first preset body inflatable soft body, the expansion distance difference △Q2 of the second preset body inflatable soft body, the expansion distance adjustment coefficient R1 of the first body inflatable soft body, the expansion distance adjustment coefficient R2 of the second body inflatable soft body, and the expansion distance adjustment coefficient R3 of the third body inflatable soft body, wherein △Q1<△Q2, 1<R1<R2<R3<2, When △Q<△Q1, the adjustment module selects the expansion distance adjustment coefficient R1 of the first body inflatable soft body to adjust the expansion distance of the body inflatable soft body; When △Q1≤△Q≤△Q2, the adjustment module selects the expansion distance adjustment coefficient R2 of the second body inflatable soft body to adjust the expansion distance of the body inflatable soft body; When △Q>△Q2, the adjustment module selects the expansion distance adjustment coefficient R3 of the third body inflatable soft body to adjust the expansion distance of the body inflatable soft body; When the adjustment module selects the expansion distance adjustment coefficient Rc of the cth body inflatable soft body to adjust the expansion distance of the body inflatable soft body, c=1, 2, 3 is set, and the adjustment module sets the expansion distance of the adjusted body inflatable soft body to Q1, and sets Q1=Q×Rc.

9. The safety protection device for neonatal nuclear magnetic resonance examination according to claim 8, characterized in that: When the analysis module determines that the inflatable body software contacts the target body, the processing module continues to inflate to obtain the active expansion distance S, the analysis module performs odd and even cyclic numbering on the multiple inflatable body softwares in the body limiting cavity, the processing module inflates all the odd-numbered inflatable body softwares, and the expansion distance is the active expansion distance. When all the odd-numbered inflatable body softwares are synchronously expanded to the active expansion distance, the processing module exhausts and contracts all the odd-numbered inflatable body softwares to the previous state, and at the same time, the processing module inflates all the even-numbered inflatable body softwares, and contracts when the expansion distance is the active expansion distance. The odd-numbered and even-numbered inflatable body softwares perform the previous steps alternately.

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