An adjustable body position pad specially used for cone beam breast CT

Abstract

The present invention discloses an adjustable body position pad specially used for cone beam breast CT. The adjustable body position pad is an air cushion body, which includes a chest pad and a leg pad. The chest pad is located on one side of the leg pad. The chest pad is provided with a hollow breast inspection hole. The size of the breast inspection hole matches the size of a single breast of a human body. The breast inspection hole is located in the middle of the chest pad. The chest of the examinee is close to the edge of the inspection hole. The breast passes through the breast inspection hole and naturally droops into the scanning cavity of the cone beam breast CT. The gas volume and temperature of the gas introduced into the chest pad and the leg pad are adjustable. The chest pad of the present invention adjusts the body position of the examinee when performing a breast inspection scan. When examining a single breast, the chest pad on one side can be adjusted sideways, so that the examinee can fix the single chest position and adapt to the inspection scan. At the same time, the problem of the examinee feeling uncomfortable due to the compression of the other breast when performing a breast CT examination is solved. The temperature of the air introduced into the body position pad is adjustable, which can soothe the examinee's emotions, prevent movement during the inspection, and prevent the generation of artifacts.

Description

Technical Field

[0001] The present invention relates to a technology of an auxiliary device for breast CT examination, and particularly to an adjustable body position cushion dedicated to cone beam breast CT. Background Art

[0002] At present, for the examination of breast diseases, the conventional methods include breast color ultrasound, mammography, breast CT, and breast enhanced angiography. When using a general CT for breast CT examination, a fan-shaped X-ray (high penetration) is used to make a vertical-axis forward movement from the middle of the patient's collarbone to the epigastric region, and a circular scan is performed in the human transverse section to generate a breast sectional view including the spine, ribs, and chest, thereby forming a three-dimensional image. Currently, a cone beam breast dedicated computed tomography scanner, also known as a cone beam breast CT scanner, has emerged on the market. Its principle is to use a conical X-ray beam to continuously scan the breast in sections, and then use a computer for image processing to form a three-dimensional breast image, simply referred to as "breast CT". The specific operation of cone beam breast CT is that the conical X-ray beam directly performs a circular scan on the breast of the chest in the coronal section. The conical beam can cover the breast starting between the first rib and the sixth rib, and the scanning gantry does not require a forward movement operation. Breast CT can carry out the following work: enhanced scan, density measurement, adjuvant therapy, puncture biopsy under three-dimensional guidance, implant evaluation, and monitoring of small and dense breasts. Compared with color ultrasound, mammography, and traditional CT angiography, the breast CT scanner has the advantages of short examination time, low radiation dose, isotropic high resolution, and accurate three-dimensional positioning during imaging, which is of great significance for the early detection, early diagnosis, and early treatment of breast cancer.

[0003] As Figure 1-2 shown, the scanning methods of the conventional CT scanner A and the cone beam breast CT scanner B are different. The conventional CT scanner includes a gantry A1. When scanning the breast, the radiation source is installed above the chest of the subject, and the radiation is vertically radiated from top to bottom, and the entire chest area of the patient is scanned together, that is, the breast structure, sternum, lungs, and epigastric region are all radiated together. Therefore, the unnecessary radiation dose received by the subject can still be further reduced, as Figure 1 shown. For the cone beam breast CT scanner, the X-ray tube for emitting X-rays is installed under the gantry and radiates from the horizontal position on one side of the breast, and only performs a sectional scan on the breast structure. The volume of the scanner gantry is small, avoiding unnecessary radiation dose to other parts of the body. The breast CT device adopts a safe and comfortable prone structure, so that the breast to be examined of the subject naturally droops into the CT scanning area, and a three-dimensional breast image in the natural state is reconstructed, effectively reducing the generation of artifacts. As Figure 2As shown, the specific structure of the cone-beam breast CT scanner is as follows: the upper surface of the cone-beam breast CT scanner B is an examination bed B2, the middle part of the examination bed is concave, and an examination opening B2 is opened. A scanning frame that can rotate 360 ​​degrees horizontally is arranged inside the examination bed, and an X-ray tube and an X-ray detector are arranged on the scanning frame; since there is only one examination opening of the cone-beam breast CT scanner, each time a breast scan is performed, one side of the human chest needs to be pressed against the middle of the examination opening and the examinee's cheek against the surface for breast scanning, while the other side of the breast is squeezed to a certain extent, making the examinee feel bad; and the examinee's upper body is exposed and lies directly on the examination bed, and the examination bed is cold, which can easily cause the patient's mood to fluctuate. If there is a slight movement during the examination, the output image will produce motion artifacts, affecting the detection results. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide an adjustable body position pad dedicated to cone-beam breast CT.

[0005] The objective of the present invention is achieved by adopting the following technical scheme: an adjustable body position pad specially used for cone-beam breast CT, the adjustable body position pad being an air cushion body, the air cushion body comprising a chest pad for padding the chest when the subject is in a prone position for breast CT scanning, and a leg pad for padding the legs when the subject is in a bent prone position for breast CT scanning, the chest pad being located on one side of the leg pad; the chest pad being provided with a hollow breast inspection hole, the size of the breast inspection hole matching the size of a single breast of a human body, the breast inspection hole being located in the middle of the chest pad; the subject's thorax being closely attached to the edge of the inspection hole, the breast passing through the breast inspection hole and naturally drooping into the cone-beam breast CT scanning cavity; the gas volume and temperature of the gas passed into the chest pad and the leg pad being adjustable.

[0006] Furthermore, the chest pad includes a left chest inflatable pad and a right chest inflatable pad arranged on one side of the left chest inflatable pad, and the air paths of the left chest inflatable pad and the right chest inflatable pad are independent; the leg pad includes a left leg inflatable pad and a right leg inflatable pad arranged on one side of the left leg inflatable pad; the air paths of the left leg inflatable pad and the right leg inflatable pad are independent; the left chest inflatable pad, the right chest inflatable pad, the left leg inflatable pad, and the right leg inflatable pad are all provided with pressure sensors and temperature sensors.

[0007] Furthermore, the adjustable body position pad also includes a jaw pad for supporting the lower jaw during breast CT scanning in a prone position; the jaw pad is arranged on a side of the chest pad away from the leg pad.

[0008] Furthermore, a radiation protection layer is provided at the bottom of the air cushion body.

[0009] Furthermore, the radiation protection layer is a lead coating or a lead fiber coating.

[0010] Furthermore, the air cushion body is an air cushion made of methyl vinyl silicone rubber or an air cushion made of methyl vinyl silicone rubber containing silver ions.

[0011] Furthermore, a disposable nursing pad is arranged on the body positioning pad.

[0012] Furthermore, the air cushion body adopts an external inflation device to supply air, and the external inflation device includes a compressor for compressing air, a solenoid valve assembly for adjusting the air volume at the output end of the compressor air path, a heating device for heating the compressed air, a touch screen for displaying the performance parameters of each component of the external inflation device, and a single-chip microcomputer for controlling the operation of each component.

[0013] Furthermore, the air pipeline of the external inflation device is connected to the air cushion body through a quick connector.

[0014] Furthermore, the adjustable body position cushion also includes a wireless remote control device for the breast CT operator to adjust the subject's body position in the radiation protection operation room and a bedside foot control for the breast CT operator to adjust the subject's body position in real time at the bedside according to the subject's body sense description.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) In the present invention, the chest pad adjusts the body position of the examinee when undergoing a breast examination scan. When examining a single breast, the chest pad can be adjusted sideways, so that the examinee can fix the single chest position and adapt to the examination scan; at the same time, it solves the problem of the examinee's other breast being compressed and uncomfortable during the breast CT examination, reducing the discomfort of the examinee during the examination. The air introduced into the body pad for controlling the examinee's body position can adjust the temperature according to the examinee's own comfort level, so that the body pad maintains a constant temperature during the examination, soothes the examinee's emotions, reduces the examinee's exposed upper body's cold discomfort, and at the same time stabilizes the emotions, which is conducive to preventing the examinee from moving during the examination, preventing the generation of artifacts, and improving the accuracy of the examination.

[0017] (2) The jaw pad is designed to support the patient's lower jaw when the patient lies prone to have their breast scanned, thus reducing discomfort to the patient.

[0018] (3) In the present application, since the rays of the cone-beam breast CT are radiated in the horizontal plane when scanning the breast, an anti-radiation layer can be provided at the bottom of the positioning pad, which can completely protect the subject from the radiation, thereby further protecting the subject from damage to the body caused by radiation.

[0019] (4) Most of the existing common CT scanners use lead coats for the protection of non-irradiated areas. The thickness of the lead coat is generally about 10mm to meet the protection requirements of traditional common CT. It cannot be directly compounded on the bed frame. It is only suitable for children who need CT to block the thyroid gland and / or reproductive organs of children. Other adults basically do not need radiation protection. In order to ensure the effect of breast CT scanning, the present invention requires that the breast to be examined be exposed and naturally droop into the breast CT scanning cavity and exposed to the frame before it can be subjected to radiation detection. Therefore, the thickness of the radiation protection layer cannot be too thick, otherwise it will shorten the vertical distance of the natural droop of the breast to be examined, affecting the scanning and detection effect. Therefore, the radiation protection layer of the present invention is preferably compounded on the bottom of the position pad by coating, and the thickness only needs to be 0.5-1mm to meet the needs of breast CT, and the cost of accessories is reduced; and the examinee only needs to lie down, without wearing a belt or additional protection, which is more convenient and safe.

[0020] (5) The air cushion body is an inflatable cushion made of methyl vinyl silicone rubber or an inflatable cushion made of methyl vinyl silicone rubber containing silver ions. The advantages of the body cushion made of this material are that it is soft and comfortable, does not absorb sweat, is not easy to breed bacteria, and is easy to disinfect.

[0021] (6) A disposable nursing pad is placed on the body position pad and replaced for each examinee to avoid direct contact, prevent cross infection, and meet medical and health requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of a conventional CT scanner in the prior art;

[0023] Figure 2 It is a schematic diagram of the structure of a cone-beam breast CT scanner in the prior art;

[0024] Figure 3 This is a schematic structural diagram of an adjustable body position cushion according to a preferred embodiment of the present invention;

[0025] Figure 4 It is a side view of the air cushion body of a preferred embodiment of the present invention;

[0026] Figure 5 It is a left side view of the air cushion body of a preferred embodiment of the present invention;

[0027] Figure 6 It is a right side view of the air cushion body of a preferred embodiment of the present invention;

[0028] Figure 7 The control principle frame of the air circuit and circuit of the adjustable body position cushion of the preferred embodiment of the present invention is Figure 1 ;

[0029] Figure 8 The control principle frame of the air circuit and circuit of the adjustable body position cushion of the preferred embodiment of the present invention is Figure 2 .

[0030] In the figure: 100, adjustable body position pad; 1, chest pad; 11, left chest inflatable pad; 12, right chest inflatable pad; 13, breast examination hole; 2, leg pad; 21, left leg inflatable pad; 22, right leg inflatable pad; 3, jaw pad; 4, radiation protection layer; 200, external inflation device; 300, gas pipeline; A, conventional CT scanner; A1, bed frame; B, cone beam breast CT scanner; B1, examination bed; B2, examination opening. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0032] like Figure 3-8 As shown, an adjustable body position pad dedicated to cone beam breast CT, the adjustable body position pad 100 is an air cushion body, the air cushion body includes a chest pad 1 for padding the chest when the subject is in a prone position for breast CT scanning, and a leg pad 2 for padding the legs when the subject is in a bent prone position for breast CT scanning, the chest pad is located on one side of the leg pad; wherein the chest pad 1 includes a left chest inflatable pad 11 and a right chest inflatable pad 12 arranged on one side of the left chest inflatable pad; the The leg pad 2 includes a left leg inflatable pad 21 and a right leg inflatable pad 22 arranged on one side of the left leg inflatable pad; the chest pad is provided with a hollow breast examination hole 13, the size of the breast examination hole matches the size of a single breast of a human body, and the breast examination hole is located in the middle of the chest pad; the chest of the examinee is close to the edge of the examination hole, and the breast passes through the breast examination hole and naturally droops into the cone beam breast CT scanning cavity; the gas volume and temperature of the gas passed into the chest pad and leg pad are adjustable.

[0033] Since cone-beam breast CT scanner B is a new product and the related supporting equipment is not yet complete, a special adjustable position pad is specially designed for supporting use. In the present invention, the chest position pad adjusts the body position of the examinee when doing a breast examination scan. When examining a single breast, the unilateral chest pad can be adjusted sideways, so that the examinee can fix the unilateral chest position and adapt to the examination scan; at the same time, it solves the problem of the examinee's other breast being compressed and uncomfortable when doing a breast CT examination, and reduces the discomfort of the examinee during the examination. The air introduced into the position pad for controlling the examinee's body position can adjust the temperature according to the examinee's own comfort level, so that the position pad maintains a constant temperature during the examination, soothes the examinee's emotions, and reduces the discomfort of the examinee's exposed upper body being cold.

[0034] As a further preferred solution, the air circuits of the left chest inflatable cushion and the right chest inflatable cushion are independent, and the air circuits of the left leg inflatable cushion and the right leg inflatable cushion are independent; the left chest inflatable cushion, the right chest inflatable cushion, the left leg inflatable cushion, and the right leg inflatable cushion are all provided with pressure sensors and temperature sensors. By providing pressure sensors and temperature sensors, the working conditions of the left and right chest and left and right leg air cushion areas can be adjusted more accurately, so that according to the comfort level of the examinee, the examinee's breasts can be adjusted to pass through the breast examination hole of the chest cushion and the inspection opening B2 of the examination bed B1 in sequence, and naturally droop into the breast CT scanning cavity, exposed to the frame, and receive radiation and detection.

[0035] As a further preferred embodiment, the adjustable body position pad also includes a jaw pad 3 for supporting the chin when the subject is in a prone position for breast CT scanning; the jaw pad is arranged on the side of the chest pad away from the leg pad. The jaw pad is a sponge pad or an inflatable pad, so that the subject can support the chin when scanning the breast in a prone position, thereby reducing the discomfort of the subject.

[0036] As a further preferred embodiment, a radiation protection layer 4 is also provided at the bottom of the air cushion body. Conventional CT scanner A has a large radiation dose, and it is impossible to set a radiation protection layer on the machine tool A1 or the frame, because when the conventional ordinary CT scans the breast, the radiation is radiated in a vertical plane, and the entire chest cavity is scanned together. If a radiation protection layer is set on the frame or machine tool, the radiation will be blocked and a complete three-dimensional image of the breast cannot be obtained. However, in the present application, since the cone-beam breast CT radiates the radiation in a horizontal plane when scanning the breast, an radiation protection layer can be set at the bottom of the position cushion, which can protect the subject from radiation radiation completely, and further protect the subject from radiation damage.

[0037] In addition, as a further preferred embodiment, the radiation protection layer is a lead coating or a lead fiber coating. Most of the existing ordinary CT scanners A use lead clothing to protect non-irradiated areas. The lead clothing generally has a lead equivalent of 0.35mm-0.50mm according to different protection parts and X-ray doses to meet the protection requirements of traditional ordinary CT. It cannot be directly compounded on the bed frame A1. It is suitable for covering and blocking organs that need to be protected, such as the thyroid gland and / or reproductive organs when patients need CT examinations. In order to ensure the effect of breast CT scanning, the present invention requires that the examined breast be exposed and naturally droop into the breast CT scanning cavity and exposed to the frame to receive radiation detection. At the same time, due to the low hardness of breast CT (low kV value), the thickness of the radiation protection layer cannot be too thick, otherwise it will shorten the vertical distance of the examined breast's natural droop, affecting the scanning and detection effect. Therefore, the radiation protection layer of the present invention is preferably coated on the bottom of the positioning pad, and the thickness only needs to be 0.5mm-1mm (lead equivalent is 0.15mm-0.35mm), which can meet the needs of breast CT and reduce the cost of accessories; and the examinee only needs to lie down, without wearing a belt or additional protection, which is more convenient and safer.

[0038] As a further preferred embodiment, the air cushion body is an inflatable cushion made of methylvinyl silicone rubber or an inflatable cushion made of methylvinyl silicone rubber containing silver ions. The advantages of the body cushion made of this material are that it is non-toxic and tasteless, safe and skin-friendly, soft and comfortable, non-sticky, water-repellent, moisture-proof and non-sweat-absorbing, contains silver ions so that it is not easy to breed bacteria, is corrosion-resistant, and can be disinfected with high-efficiency disinfectants.

[0039] As a further preferred solution, a disposable nursing pad is provided on the position pad and replaced once for each examinee, thereby avoiding direct contact, preventing cross infection, and meeting medical and hygienic requirements.

[0040] As a further preferred embodiment, the air cushion body adopts an external inflation device 200 to supply air, and the external inflation device includes a compressor for compressing air, a solenoid valve assembly for adjusting the air volume at the output end of the compressor air path, a heating device for heating the compressed air, a touch screen for displaying the performance parameters of each component of the external inflation device, and a single-chip microcomputer for controlling the operation of each component.

[0041] Among them, the compressor of the present invention is arranged in an external inflation device, and the compressor includes an air pump for air supply and a motor for controlling the operation of the air pump. The compressor draws air from the outside for compression, and a filter cotton is provided at the air inlet of the compressor to reduce the entry of dust and water vapor into the compressor. The inner wall of the outer shell of the external inflation device is provided with sound insulation cotton, and the compression process is quieter, providing a more comfortable and quiet inspection environment for the examinee. The compressor generates uniform compressed air to supply the four air cushion areas, so as to achieve the effect of filling the four air cushion areas. The output end of the compressor is connected to the air cushion body through the air circuit pipeline 300.

[0042] The solenoid valve assembly is arranged on the air pipeline, and the solenoid valve assembly consists of 8 gas solenoid valves. The body positioning cushion in each area includes an inflation solenoid valve for controlling the air input of the body positioning cushion in that area and a deflation solenoid valve for controlling the air discharge of the body positioning cushion in that area, serving as a switch for the gas in and out of the cushion in each area.

[0043] The heating device is preferably a cooling and heating semiconductor, and the heating device is arranged in an external inflation device.

[0044] In addition, the touch screen is a capacitive touch screen. Through the touch screen, you can observe and adjust the working conditions of the left and right chest and left and right leg areas, because each area is equipped with an air pressure sensor and a temperature sensor. The touch screen has a simple diagram of the left chest inflatable cushion, the right chest inflatable cushion, the left leg inflatable cushion and the right leg inflatable cushion. The simple diagram is divided into the left and right chest and left and right leg areas. Each area has a pressurization and decompression button, which can intuitively feel the pressure conditions of the four air cushion areas, making the body position adjustment more accurate and more sensitive and intuitive.

[0045] The external inflatable device is powered by 220V AC. The circuit part of the external inflatable device includes three circuits, which are used for the compressor, heating device and single-chip microcomputer. The first circuit is used for the silent air compressor to generate positive pressure compressed gas, and the silent air compressor is equipped with a small gas storage tank to reduce pressure fluctuations. The second circuit is used for the heating device to heat the gas output by the compressor after the AC is rectified, which is used to adjust the air temperature in the input position cushion, and uses hot and cold semiconductors for rapid cooling and heating, which is efficient and silent. The third circuit is used for the AC to be stepped down and rectified by the switching power supply, and outputs multiple DC voltages for the single-chip microcomputer, including those used to control the gas solenoid valve, pressure sensor, temperature sensor, touch screen, bedside foot control (simple foot switch), wireless control communication, etc.

[0046] The external inflatable device is placed on the platform, and the platform has a built-in gas spring to adjust the height of the platform. The bottom of the platform has universal wheels with brakes, which is convenient for moving the external inflatable device or keeping it stationary.

[0047] As a further preferred embodiment, the adjustable position pad also includes a wireless remote control device for the breast CT operator to adjust the subject's position in the radiation protection operation room and a bedside foot control for the breast CT operator to adjust the subject's position in real time at the bedside according to the subject's somatosensory description. The wireless remote control device and the bedside foot control are electrically connected to the single-chip microcomputer respectively. The bedside foot control adopts a foot switch. The two control systems of the wireless remote control device and the bedside foot control are operated in parallel, and the simultaneous use can meet the control needs of the entire examination process, such as the position adjustment in the early stage of the examination and the secondary position adjustment during the examination.

[0048] like Figure 7-8The figure shows the control principle diagram of the air circuit and circuit of the adjustable body position cushion.

[0049] Among them, the implementation process of the wireless remote control device is as follows:

[0050] When the inflation button of the wireless remote control device is pressed, an inflation signal is generated, and the wireless remote control device sends the inflation signal to the IN2 port of the single-chip microcomputer through the wireless transmitting unit and the wireless receiving unit. At this time, the single-chip microcomputer controls OUT1 to output a high level, OUT2 to output a high level, and OUT3 to output a low level, so that the electronic switch is turned on, the first solenoid valve (installed on the air inlet pipe) is closed, and the second solenoid valve (installed on the air outlet pipe) is opened, and the power circuit supplies power to the motor, and the motor electric air pump compresses the atmosphere through the air inlet pipe to charge the air cushion;

[0051] When the deflation button of the wireless remote control device is pressed, a deflation signal is generated, and the wireless remote control device sends the deflation signal to the IN2 port of the single-chip microcomputer through the wireless transmitting unit and the wireless receiving unit. At this time, the single-chip microcomputer controls OUT1 to output a low level, OUT2 to output a low level, and OUT3 to output a high level, so that the electronic switch is cut off, the first solenoid valve (installed on the air inlet pipe) is opened, and the second solenoid valve (installed on the air outlet pipe) is closed, the motor lacks power and does not work, and the air cushion is deflated through the air outlet pipe.

[0052] The electronic switch uses a PNP transistor. When the b pole of the PNP transistor is at a high level, the PNP transistor is turned on, and the voltage output by the power supply circuit flows through the c pole of the PNP transistor to the e pole of the PNP transistor to charge the motor. Conversely, when the b pole of the PNP transistor is at a low level, the PNP transistor is cut off, and the connection between the c pole and the e pole of the PNP transistor is disconnected.

[0053] The implementation process of bedside foot control is as follows:

[0054] When the foot switch is closed, that is, the single-chip microcomputer IN1 port receives a low level, at this time, the single-chip microcomputer controls OUT1 to output a high level, OUT2 to output a high level, and OUT3 to output a low level, so that the electronic switch is turned on, the first solenoid valve (i.e., the inflation solenoid valve installed on the air inlet pipe) is closed, and the second solenoid valve (i.e., the deflation solenoid valve installed on the air outlet pipe) is opened, the power supply circuit supplies power to the motor, and the motor electric air pump compresses the atmosphere through the air inlet pipe to charge the air cushion;

[0055] When the foot switch is turned on, the IN1 port of the microcontroller receives a high level. At this time, the microcontroller controls OUT1 to output a low level, OUT2 to output a low level, and OUT3 to output a high level, so that the electronic switch is cut off, the first solenoid valve (that is, the inflation solenoid valve installed on the intake pipe) opens, and the second solenoid valve (that is, the deflation solenoid valve installed on the outlet pipe) closes. The motor does not work due to lack of power, and the air cushion is deflated through the outlet pipe.

[0056] As a further preferred solution, the air pipe of the external inflatable device is connected to the air cushion body through a quick connector. Since the air cushion is made of silicone rubber material, the air pipe and the air cushion adopt a straight-through quick connector, so that the body cushion can be easily disassembled and can be cleaned and disinfected inside and outside.

[0057] The inspection process of this cone-beam breast CT and the working process of the adjustable body position pad for this cone-beam breast CT are as follows:

[0058] The cone-beam breast CT scanner A is covered with the air cushion body of the adjustable position pad of the present invention. The examinee takes off her top and lies prone naturally on the adjustable position pad. The examinee's breast passes through the breast inspection hole of the adjustable position pad and naturally droops to the inspection opening A1 of the cone-beam breast CT scanner to enter the breast CT scanning cavity. The cone-beam breast CT scanner is internally provided with a scanning frame that can rotate 360° horizontally, and the scanning frame is provided with an X-ray tube and an X-ray flat-panel detector. By rotating the scanning frame, the breast and chest wall in a naturally drooping state can be scanned 360° in all directions for 10 seconds, thereby realizing full collection of whole breast tissue information and forming a 3D image.

[0059] Before the examinee lies prone, the adjustable body position cushion needs to be inflated, that is, the compressor is turned on, and the compressor output gas first passes through the cooling and heating semiconductor, and the gas temperature is adjusted according to the temperature requirements of the examinee; the solenoid valve assembly controls the inflation solenoid valve and deflation solenoid valve corresponding to each area of ​​the body position cushion in the four areas to control the gas in and out of the cushion. The solenoid valve assembly contains a total of 8 gas solenoid valves; the air passing through the cooling and heating semiconductor enters the inner cavity of the body position cushion through the opened inflation solenoid valve, and the deflation solenoid valve is closed to reach a comfortable pressure for the examinee; after the body position requirements for the examination are met, the inflation solenoid valve is closed, and the cooling and heating semiconductor and the compressor are stopped. When the examinee is examined, the deflation solenoid valve is controlled to discharge the gas from the inner cavity of the body position cushion.

[0060] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An adjustable body position pad for cone beam breast CT. It is characterized in that The adjustable body position cushion is an air cushion body, which includes a chest cushion for cushioning the chest of the examinee when the examinee is in a prone position for breast CT scanning, and a leg cushion for cushioning the legs of the examinee when the examinee is in a bent prone position for breast CT scanning, and the chest cushion is located on one side of the leg cushion; the chest cushion is provided with a hollow breast inspection hole, the size of the breast inspection hole matches the size of a single breast of a human body, and the breast inspection hole is located in the middle of the chest cushion; the examinee's chest is close to the edge of the inspection hole, the breast passes through the breast inspection hole, and naturally droops into the cone beam breast CT scanning cavity; the gas volume and temperature of the gas passed into the chest cushion and the leg cushion are adjustable; The chest pad includes a left chest inflatable pad and a right chest inflatable pad arranged on one side of the left chest inflatable pad, and the air paths of the left chest inflatable pad and the right chest inflatable pad are independent; the leg pad includes a left leg inflatable pad and a right leg inflatable pad arranged on one side of the left leg inflatable pad; the air paths of the left leg inflatable pad and the right leg inflatable pad are independent; the left chest inflatable pad, the right chest inflatable pad, the left leg inflatable pad, and the right leg inflatable pad are all provided with pressure sensors and temperature sensors.

2. The adjustable body position pad for cone beam breast CT according to claim 1, It is characterized in that The adjustable body position pad also includes a jaw pad used to support the lower jaw during breast CT scanning in a prone position; the jaw pad is arranged on a side of the chest pad away from the leg pad.

3. The adjustable body position pad for cone beam breast CT according to claim 1, It is characterized in that A radiation protection layer is also provided at the bottom of the air cushion body.

4. The adjustable body position pad for cone beam breast CT according to claim 3, It is characterized in that The radiation protection layer is a lead coating or a lead fiber coating.

5. The adjustable body position pad for cone beam breast CT according to claim 1, It is characterized in that The air cushion body is an air cushion made of methyl vinyl silicone rubber or an air cushion made of methyl vinyl silicone rubber containing silver ions.

6. The adjustable body position pad for cone beam breast CT according to claim 1, It is characterized in that Set the disposable nursing pad on the positioning pad.

7. The adjustable body position pad for cone beam breast CT according to claim 1, It is characterized in that The air cushion body adopts an external inflation device to supply air, and the external inflation device includes a compressor for compressing air, a solenoid valve assembly for adjusting the air volume at the output end of the compressor air path, a heating device for heating the compressed air, a touch screen for displaying the performance parameters of each component of the external inflation device, and a single-chip microcomputer for controlling the operation of each component.

8. The adjustable body position pad for cone beam breast CT according to claim 7, It is characterized in that The air path pipeline of the external inflatable device is connected to the air cushion body through a quick connector.

9. The adjustable body position pad for cone beam breast CT according to claim 1, It is characterized in that The adjustable body position pad further includes a wireless remote control device for the breast CT operator to adjust the body position of the subject in the radiation protection operation room and a foot control at the bedside for the breast CT operator to adjust the body position of the subject in real time according to the physical sensation description of the subject at the bedside.

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