Head fixing device for medical scanning, examining table and medical scanning equipment

Abstract

The utility model discloses a head fixing device for medical scanning, an examination couch and medical scanning equipment. The head fixing device comprises a peripheral side fixing piece connected with the examination couch, and the peripheral side fixing piece is configured to be adjustable in peripheral space; and the driving part is used for driving the peripheral side fixing part to adjust the peripheral space of the peripheral side fixing part, and the driving part is configured to be remotely controlled or directly controlled. According to the head fixing device for medical scanning, the peripheral side fixing piece with the adjustable peripheral space is installed on the examination bed, the driving piece is further arranged to drive the peripheral side fixing piece, the head is automatically fixed, the head fixing device can adapt to human bodies of different body types, manual adjustment is not needed, an operator does not need to enter an examination room, and safety is high.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a head fixation device, examination bed, and medical scanning equipment for medical scanning. Background Technology

[0002] Medical scanning equipment, such as PET, PET-CT, CT, MR, and PET-MR, can acquire metabolic information and anatomical structures of the human body by scanning it. For example, PET can provide information about metabolism and physiological functions in the body, especially the assessment of glucose metabolism, and by using radioactive tracers (such as fluorodeoxyglucose, FDG), it can show the activity level of cells under specific physiological conditions; CT provides high-resolution anatomical images that can show the structure of tissues and organs in detail.

[0003] All of the aforementioned medical scanning devices use a bed drive mechanism to move the body into the center of the detector. The scanning process is continuous. If the body moves during the scan, discontinuous layers will appear in the acquired images, causing image distortion. When the scanning device is PET-CT or PET-MR, this can lead to image fusion failure. This is especially true for head scans, as the brain has an extremely complex structure, requiring continuous imaging to obtain higher quality images. However, since the scanning process is usually lengthy, it is difficult for the body to remain completely still throughout the entire scan; therefore, head fixation is necessary during the scan.

[0004] Current head immobilization methods typically employ two external wedges in conjunction with the headrest of the examination table. The operator manually places the two wedges symmetrically on either side of the head, between the headrest and the head, and uses compression to restrict head movement. However, due to varying head sizes, this requires multiple wedges of different sizes and a lengthy adjustment period to achieve the desired immobilization effect, resulting in poor comfort. Furthermore, in PET scans, the injection of tracers poses a radiation hazard to the operator. Therefore, head immobilization via wedge adjustment is unsuitable for PET scans; instead, image calibration is performed via software after the scan. This undoubtedly increases data processing workload and slows down image acquisition speed and quality.

[0005] The background art description is provided solely for the purpose of understanding the relevant technologies in this field and is not intended as an admission of prior art. Summary of the Invention

[0006] To solve the above-mentioned technical problems, this utility model proposes a head fixation device, an examination bed, and a medical scanning device.

[0007] In a first aspect, embodiments of this application provide a head fixation device for medical scanning, the head fixation device comprising:

[0008] A peripheral fastener is connected to the examination bed, and the peripheral fastener is configured to have an adjustable internal space.

[0009] A driving component is used to drive the peripheral fixing component to adjust the circumferential space of the peripheral fixing component.

[0010] According to one embodiment of this application, the driving member includes an air pump, the peripheral fixing member is configured to include a sealed cavity and a peripheral moving mechanism, the air pump is in communication with the sealed cavity, and the peripheral moving mechanism is configured to move under the drive of the air pump to adjust the circumferential space of the peripheral fixing member.

[0011] According to one embodiment of this application, the peripheral fixing member includes a headrest body, which is connected to the examination bed, and the headrest body and the peripheral moving mechanism constitute the sealed cavity.

[0012] According to one embodiment of this application, the peripheral moving mechanism includes two pressure block base plates, which are symmetrically arranged and whose length direction is parallel to the length direction of the examination bed.

[0013] According to one embodiment of this application, the headrest body is provided with a mounting position for mounting the pressure block base plate, and the mounting position forms a recessed space inward into the headrest body.

[0014] According to one embodiment of this application, a protrusion is provided on the side of the pressure block base plate facing the headrest body, and a through hole is provided on the plate of the mounting position, with the protrusion passing through the through hole.

[0015] According to one embodiment of this application, a first recess is provided on the base plate of the pressure block.

[0016] According to one embodiment of this application, the peripheral fixing member further includes a return mechanism, which is configured to drive the peripheral moving mechanism to reset.

[0017] According to one embodiment of this application, the driving component includes an air pump, the peripheral fixing component is an arc-shaped seal made of an elastic material, the interior of the peripheral fixing component is a sealed cavity, and the peripheral fixing component is configured to increase or decrease in volume under the action of the air pump to adjust the circumferential space of the peripheral fixing component.

[0018] According to one embodiment of this application, the head fixing device further includes an overflow valve disposed on the peripheral fixing member.

[0019] According to one embodiment of this application, the head fixation device further includes a pressure sensor for detecting the air pressure within the sealed cavity.

[0020] According to one embodiment of this application, the air pump is disposed on the examination bed.

[0021] According to one embodiment of this application, the head fixing device further includes a head pad located at the bottom of the circumferential space of the peripheral fixing member, and the head pad is provided with a groove for head positioning.

[0022] According to one embodiment of this application, the head fixation device further includes a soft pad located on the side of the internal space of the peripheral fixation member, the shape of the inner side of the soft pad being adapted to the face shape.

[0023] According to one embodiment of this application, the soft pad is provided with a second recess to avoid the ear;

[0024] The cushion is equipped with a chin support.

[0025] According to one embodiment of this application, the cushion is configured to move in response to the movement of the peripheral fastener.

[0026] According to one embodiment of this application, the peripheral fastener is configured in an arc shape, with the arc-shaped opening corresponding to the neck.

[0027] According to one embodiment of this application, the peripheral fixing member is a single arc-shaped member, and the number of driving members is one.

[0028] According to one embodiment of this application, the peripheral fixing member includes a plurality of arc-shaped members, the number of driving members is the same as the number of arc-shaped members, and all the driving members synchronously drive each arc-shaped member.

[0029] According to one embodiment of this application, the central axis of the peripheral fixing member and the central axis of the examination bed are located on the same vertical plane.

[0030] Secondly, embodiments of this application provide an examination bed, including a bed body and a head fixation device for medical scanning provided in the first aspect.

[0031] Thirdly, embodiments of this application provide a medical scanning device, including an examination bed, a detector, and the head fixation device for medical scanning provided in the first aspect.

[0032] The head fixation device for medical scanning provided in this application automatically fixes the head by installing adjustable circumferential fixation components on the examination bed and further configuring drive components to drive the circumferential fixation components. It can adapt to people of different body types, requires no manual adjustment, and does not require operators to enter the examination room, thus ensuring high safety.

[0033] Optional features and other effects of the embodiments of this application are described in part below, and in part will be apparent from reading this document. Attached Figure Description

[0034] The embodiments of this application will be described in detail with reference to the accompanying drawings. The elements shown are not limited to the scale shown in the drawings, and the same or similar reference numerals in the drawings denote the same or similar elements, wherein:

[0035] Figure 1 This is a schematic diagram of the structure of a head fixation device for medical scanning installed on an examination bed according to an embodiment of this application;

[0036] Figure 2 This is a schematic diagram of the structure of a head fixation device for medical scanning according to an embodiment of this application;

[0037] Figure 3 This is another structural schematic diagram of a head fixation device for medical scanning according to an embodiment of this application;

[0038] Figure 4 This is a partial schematic diagram of a head fixation device for medical scanning according to an embodiment of this application;

[0039] Figure 5 This is a schematic diagram illustrating the application of a head fixation device for medical scanning according to an embodiment of this application;

[0040] Figure 6 This is a partial disassembly diagram of a head fixation device for medical scanning according to an embodiment of this application;

[0041] Figure 7 This is a schematic diagram of the structure of the headrest body of the medical scanning head fixation device according to an embodiment of this application;

[0042] Figure 8 This is a schematic diagram of the peripheral movement mechanism of a head fixation device for medical scanning according to an embodiment of this application;

[0043] Figure 9 This is a front view of the headrest body of a medical scanning head fixation device according to an embodiment of this application;

[0044] Figure 10 For along Figure 9 Cross-sectional view of line AA in the middle;

[0045] Figure 11 This is a top view of the headrest body of a medical scanning head fixation device according to an embodiment of this application. Detailed Implementation

[0046] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0047] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "upper," "lower," and similar expressions used herein are for illustrative purposes only and are not intended to limit practical application. The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of these specific details, or other methods, components, materials, devices, or operations may be employed. In these cases, well-known structures, methods, devices, implementations, materials, or operations will not be shown or described in detail.

[0048] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0049] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or apparatus. The terms "and / or" or "and / or" include any and all combinations of one or more of the associated listed items.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0051] As described in the background section, the existing technology uses a combination of wedges and headrests to fix the head, which has poor compatibility with different human bodies, long adjustment time, and is not suitable for scanning scenarios involving PET.

[0052] To address the aforementioned issues, this application provides a head fixation device for medical scanning, which has an automatically adjustable internal space, high compatibility, short adjustment time, and eliminates the need for operators to enter the examination room, making it suitable for scanning scenarios involving PET.

[0053] The following description, with reference to the accompanying drawings, illustrates some preferred embodiments of the present application. It should be noted that the following description is for illustrative purposes only and is not intended to limit the scope of protection of this application.

[0054] Figure 1 This is a schematic diagram of the structure of a head fixation device for medical scanning installed on an examination bed according to an embodiment of this application. Figure 1 As shown, the head fixation device provided in this application generally includes a peripheral fixation member 100 and a driving member 200.

[0055] Specifically, the peripheral fastener 100 is connected to the bed board 300 of the examination bed, and the peripheral fastener 100 is configured to form a peripheral space 111 ( Figure 2 The circumferential space 111 is adjustable and is used to place the head. By adjusting the circumferential space 111, heads of different sizes can be fixed. The inner circumference of the circumferential fixing member 100 can form a whole arc or multiple arcs, but one opening of the arc corresponds to the neck. Generally, the two side walls of the circumferential fixing member 100 correspond to at least the left and right sides of the head.

[0056] Specifically, when the inner periphery of the peripheral fixing member 100 is formed as a whole arc, one driving member 200 can be used for driving. When the peripheral fixing member 100 is multiple arcs, it is preferable to use the same number of driving members 200 as the number of arcs for driving. At the same time, the same control member can be configured to drive all driving members 200 synchronously to better achieve fixation.

[0057] Specifically, the connection method between the peripheral fixing member 100 and the examination bed can be set as needed. For example, a buckle can be set at the bottom of the peripheral fixing member 100 and a slot can be set at the corresponding position of the examination bed, and the two can be connected together. Alternatively, a threaded hole can be set at the bottom of the peripheral fixing member 100 and a threaded hole can be set at the corresponding position of the examination bed, and the connection can be made by screws passing through the threaded holes.

[0058] Specifically, the peripheral fixing member 100 is positioned on the examination bed such that its central axis is on the same vertical plane as the central axis of the examination bed. In one example, the peripheral fixing member 100 is located at the center of the end face of the examination bed near the detector. In another example, the outer edge of the peripheral fixing member 100 is substantially flush with the edge of the examination bed. A slot 114 is provided on the edge of the peripheral fixing member 100 corresponding to the edge of the examination bed. Figure 7 The grooves 114 are provided on both sides of the edge and are symmetrically arranged. The purpose of providing the grooves 114 is to facilitate the assembly of the peripheral fasteners 100 with the inspection bed.

[0059] It should be noted that the peripheral fastener 100 can replace the headrest and wedge in the prior art.

[0060] Specifically, the driving member 200 is used to drive the peripheral fixing member 100 to adjust the circumferential space 111 of the peripheral fixing member 100. Figure 2 This is a schematic diagram of the structure of a head fixation device for medical scanning according to an embodiment of this application. Figure 3 This is another structural schematic diagram of a head fixation device for medical scanning according to an embodiment of this application. (Comparison) Figure 2 and Figure 3 It can be observed that, Figure 2 The intra-circumferential space shown is 111 times. Figure 3 The shown intra-circumference space is 111. Figure 4 This is a partial schematic diagram of a head fixation device for medical scanning according to an embodiment of this application. Figure 4 As shown, under the drive of the driving member 200, the peripheral fixing member 100 can move in the direction of the arrow. Figure 5 This is a schematic diagram illustrating the application of a head fixation device for medical scanning according to an embodiment of this application. Figure 5 As shown, the peripheral fixing member 100 fixes the human head.

[0061] The drive unit 200 is configured to be both remotely and directly controlled. Remote control refers to operation from outside the examination room, such as via a computer program outside the examination room. Direct control refers to operation via the power switch, control panel, etc., on the drive unit 200. The remote control function is particularly suitable for scenarios where radiation exists in the examination room, such as PET scans.

[0062] Figure 6 This is a partial disassembly diagram of a head fixation device for medical scanning according to an embodiment of this application. Figure 7 This is a schematic diagram of the headrest body of a medical scanning head fixation device according to an embodiment of this application. Figure 8 This is a schematic diagram of the peripheral movement mechanism of a head fixation device for medical scanning according to an embodiment of this application. Figure 9 This is a front view of the headrest body of a medical scanning head fixation device according to an embodiment of this application. Figure 10 For along Figure 9 Cross-sectional view of line AA in the middle. Figure 11 This is a top view of the headrest body of a medical scanning head fixation device according to an embodiment of this application. The following is a description of... Figures 6-11 A detailed description of an example provided in this application is given.

[0063] In one example of this application, the drive unit 200 includes an air pump (not shown), the pressure of which is adjustable. See also Figure 6 and Figure 8 The peripheral fixing member 100 is configured to include a sealed cavity and a peripheral moving mechanism 120. The air pump is connected to the sealed cavity, and the peripheral moving mechanism 120 is configured to move under the drive of the air pump to adjust the peripheral space 111 of the peripheral fixing member 100.

[0064] It should be noted that the peripheral moving mechanism 120 can be inside the sealed cavity, outside the sealed cavity, or part of the sealed cavity. For example, the sealed cavity near the head is designed to expand and contract under air pressure. When the peripheral movable mechanism 120 is inside the sealed cavity, when the sealed cavity extends, it pulls the peripheral movable mechanism 120 to shrink the circumferential space 111; when the sealed cavity shrinks, it drives the peripheral movable mechanism 120 to increase the circumferential space 111. When the peripheral movable mechanism 120 is outside the sealed cavity, when the sealed cavity extends, it pushes the peripheral movable mechanism 120 to shrink the circumferential space 111; when the sealed cavity shrinks, it pulls the peripheral movable mechanism 120 to increase the circumferential space 111. When the peripheral movable mechanism 120 is part of the sealed cavity, it is connected to the main body of the sealed cavity, and the two constitute the whole of the sealed cavity. The overall airtightness is ensured through structural design. The peripheral movable mechanism 120 is movably connected to the main body of the sealed cavity, so that the circumferential space 111 can be adjusted under the action of the air pump.

[0065] Preferably, following the example described above where the peripheral moving mechanism is part of a sealed cavity, see [example missing]. Figure 6 , Figures 8-11 The peripheral fixing member 100 includes a headrest body 110, which is connected to the examination bed. The headrest body 110 and the peripheral moving mechanism 120 constitute the sealed cavity 117, wherein the headrest body 110 is the main part of the sealed cavity 117 in the above example. The headrest body 110 includes a base plate and an arc-shaped barrel plate. The base plate is connected to the examination bed. The arc-shaped barrel plate has openings at its bottom and on its inner side. The bottom opening is closed by the base plate, and the inner opening is closed by the peripheral moving mechanism 120.

[0066] Furthermore, in one example of this application, the peripheral movement mechanism 120 includes two pressure plate bases, which are symmetrically arranged and whose length direction is parallel to the length direction of the examination bed. The pressure plate bases correspond to the left and right sides of the head (i.e., the two ear sides).

[0067] Specifically, in one example of this application, the headrest body 110 is provided with a mounting position for mounting the pressure block base plate near the human head. The mounting position forms a recessed space inside the headrest body 110, and the recessed space is the movement space of the pressure block base plate.

[0068] Specifically, in one example of this application, see [link to example]. Figures 6-8The pressure block base plate has a protrusion 121 on the side facing the headrest body 110. The mounting plate has a through hole 112. The protrusion 121 passes through the through hole 112 to fix the pressure block base plate axially. For example, there are three protrusions 121 and three through holes 112.

[0069] Specifically, in one example of this application, see [link to example]. Figure 6 , Figure 8 and Figure 10 The peripheral fixing member 100 further includes a return mechanism 160, which is used to drive the peripheral moving mechanism 120 to reset. Exemplarily, the return mechanism 160 is an elastic element disposed between the pressure block base plate and the headrest body 110. The number of elastic elements can be multiple, exemplarily three. Further exemplarily, the elastic element is a rubber material with both ends connected to the pressure block base plate and the headrest body 110 respectively, and the return of the pressure block base plate is achieved through the elastic force of the material itself.

[0070] Preferably, in one example of this application, see [reference needed]. Figure 8 The base plate of the pressure block is provided with a first recess 122, which is used to avoid the ear and improve comfort.

[0071] Preferably, in one example of this application, in order to better avoid ear placement, the headrest body 110 is provided with a certain length in the axial direction. This length can be set according to the maximum recorded length of a human head. When fixed, the ear is placed into the first recess 122 by the movement of the test body 400 itself, so as to meet the ear placement requirements of different human bodies.

[0072] Furthermore, by setting the peripheral fixing member 100 into two arc-shaped members, with the two arc-shaped members corresponding to the left and right sides of the human head respectively, since the top of the human head is unrestricted, under the premise of having the aforementioned first recess 122, the ear avoidance requirements of different human bodies can also be met.

[0073] Specifically, in one example of this application, see [link to example]. Figure 7 A retaining strip 113 is provided at the edge of the mounting position near the head, and the retaining strip 113 is used to prevent the pressure block base plate from falling off the mounting position.

[0074] Specifically, in one example of this application, see [link to example]. Figure 6 The head fixation device further includes an overflow valve 150, which is disposed on the peripheral fixing member 100 to release pressure when the pressure is too high, thereby improving the safety of the head fixation device. Preferably, the overflow valve 150 is a double-row overflow valve. Figure 11 In the attached figure, reference numeral 116 indicates the installation position of the overflow valve 150.

[0075] Preferably, the head fixing device further includes a pressure sensor for detecting the air pressure inside the sealed cavity 117. When the value of the pressure sensor is greater than a threshold, the overflow valve 150 opens to release pressure.

[0076] Optionally, in one example of this application, the air pump is disposed on the examination bed. Exemplarily, the air pump is disposed in the middle or rear part or the tail of the examination bed, the position of which is such that it does not interfere with the human body lying on the examination bed.

[0077] Preferably, see Figure 10 and Figure 11 Both the base plate of the headrest body 110 and the examination bed are provided with air pipe arrangement slots 115 for arranging the air pipe between the air pump and the headrest body 110. The double-row overflow valve is connected in series in the air circuit to play a protective role. When the air pump has a pressurization failure, the double-row overflow valve can release the air pressure that exceeds the threshold.

[0078] Preferably, in one example of this application, see [reference needed]. Figure 6 The head-fixing device further includes a headrest 140, which is located at the bottom of the circumferential space 111 of the peripheral fixing member 100. The headrest 140 has a groove 141 for head positioning. In an example where the headrest body 110 has a base plate, the headrest 140 is positioned above the base plate.

[0079] Preferably, in one example of this application, see [reference needed]. Figure 6 The head fixation device also includes a soft pad 130, which is located on the side of the internal space of the peripheral fixation member 100. The shape of the inner side of the soft pad 130 is adapted to the face shape to further improve comfort.

[0080] Optionally, the cushion 130 is bonded to the base plate of the pressure block.

[0081] Preferably, see Figure 6 The soft pad 130 has a second recess 131 at the position corresponding to the first recess 122, so as to avoid the ear.

[0082] Further, see Figure 6 The soft pad 130 is also provided with a chin fixing position 132, which is a protruding structure extending outward from the main body of the soft pad 130 to achieve better positioning.

[0083] Specifically, in one example of this application, the cushion 130 is configured to move in accordance with the movement of the peripheral fastener 100, thereby securing the head.

[0084] Optionally, in one example of this application, the headrest 140 and the soft cushion 130 are both made of latex material, and the headrest body 110 and the pressure block base plate are both made of low-density hard material.

[0085] Specifically, in another example of this application, the driving component includes an air pump. Unlike the example above, the peripheral fixing member 100 is an arc-shaped seal made of an elastic material. The peripheral fixing member is configured to increase or decrease in volume under the action of the air pump to adjust the circumferential space of the peripheral fixing member. Preferably, the outer side and bottom of the peripheral fixing member are made of a non-elastic material, while the inner side and top are made of an elastic material, to facilitate connection with the examination bed. Furthermore, during inflation, only the top and inner side extend, which better secures the head.

[0086] The head fixation device for medical scanning provided in this application automatically fixes the head by installing adjustable circumferential fixation components on the examination bed and further configuring drive components to drive the circumferential fixation components. It can adapt to people of different body types, requires no manual adjustment, and does not require operators to enter the examination room, thus ensuring high safety.

[0087] Corresponding to the head fixation device described above, this application also provides an examination bed, which includes a bed body and a head fixation device for medical scanning provided in any of the above examples. The examination bed can be applied to any one of PET, CT, MR, PET-CT, and PET-MR, and is particularly suitable for brain PET in PET-CT.

[0088] Corresponding to the head fixation device described above, this application also provides a medical scanning device, which includes an examination bed, a detector, and a head fixation device for medical scanning provided in any of the above examples. The detector may be flat, arc-shaped, or ring-shaped. The examination bed is configured to move along its own length direction during scanning. The medical scanning device includes any one of PET, CT, MR, PET-CT, and PET-MR, and may also include brain PET in PET-CT.

[0089] The head fixation device provided in this application can operate using the following process:

[0090] 1. After the subject enters the examination room, the existing voice system will prompt the subject to lie down on the examination bed;

[0091] 2. The voice prompt instructs the subject to align their ear with the second indentation.

[0092] 3. Turn on the air pump and set the air pump pressure value. The air pump pressure value can be adjusted according to the comfort level described by the test subject.

[0093] 4. Perform a scan;

[0094] 5. After the scan is complete, release the air using an air pump;

[0095] 6. The test subject will be prompted to stand up.

[0096] To simplify the description of this application and thus aid in understanding one or more embodiments of the utility model, the foregoing description of the embodiments of this application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of this application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0097] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±10%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of scope in some embodiments of this application are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0098] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that material are incorporated herein by reference. This excludes historical application documents that are inconsistent with or conflict with the content of this application, as well as documents that limit the broadest scope of the claims in this application (currently or subsequently appended to this application). It should be noted that if there is any inconsistency or conflict between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0099] Finally, it should be understood that the embodiments described in this application are merely illustrative of the principles of the embodiments of this application. Other modifications may also fall within the scope of this application. Therefore, alternative configurations of the embodiments of this application are considered as examples and not limitations, and are regarded as consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly described in this application.

Claims

1. A head fixation device for medical scanning, characterized in that, The head fixation device includes: A peripheral fastener is connected to the examination bed, and the peripheral fastener is configured to have an adjustable internal space. A driving component is used to drive the peripheral fixing component to adjust the circumferential space of the peripheral fixing component.

2. The head fixation device according to claim 1, characterized in that, The driving component includes an air pump, and the peripheral fixing component is configured to include a sealed cavity and a peripheral moving mechanism. The air pump is in communication with the sealed cavity, and the peripheral moving mechanism is configured to move under the drive of the air pump to adjust the circumferential space of the peripheral fixing component.

3. The head fixation device according to claim 2, characterized in that, The peripheral fixing component includes a headrest body, which is connected to the examination bed. The headrest body and the peripheral moving mechanism together form the sealed cavity.

4. The head fixation device according to claim 3, characterized in that, The peripheral moving mechanism includes two pressure block base plates, which are symmetrically arranged and whose length direction is parallel to the length direction of the examination bed.

5. The head fixation device according to claim 4, characterized in that, The headrest body is provided with a mounting position for installing the pressure block base plate, and the mounting position forms a recessed space inside the headrest body.

6. The head fixation device according to claim 5, characterized in that, The base plate of the pressure block has a protrusion on the side facing the headrest body, and the plate of the mounting position has a through hole, with the protrusion passing through the through hole.

7. The head fixation device according to claim 4, characterized in that, The base plate of the pressing block is provided with a first recess.

8. The head fixation device according to claim 2, characterized in that, The peripheral fixing component also includes a return mechanism, which is configured to drive the peripheral moving mechanism to reset.

9. The head fixation device according to claim 1, characterized in that, The driving component includes an air pump, and the peripheral fixing component is an arc-shaped sealing component made of elastic material. The interior of the peripheral fixing component is a sealed cavity. The peripheral fixing component is configured to increase or decrease in volume under the action of the air pump to adjust the internal space of the peripheral fixing component.

10. The head fixation device according to claim 2 or 9, characterized in that, The head fixing device also includes an overflow valve, which is disposed on the peripheral fixing member.

11. The head fixation device according to claim 2 or 9, characterized in that, The head fixation device also includes a pressure sensor for detecting the air pressure inside the sealed cavity.

12. The head fixation device according to claim 2 or 9, characterized in that, The air pump is installed on the examination bed.

13. The head fixation device according to claim 1, characterized in that, The head fixing device also includes a head pad, which is located at the bottom of the circumferential space of the peripheral fixing member. The head pad is provided with a groove for positioning the head.

14. The head fixation device according to claim 1, characterized in that, The head fixation device also includes a soft pad located on the side of the internal space of the peripheral fixation member, and the shape of the inner side of the soft pad is adapted to the face shape.

15. The head fixation device according to claim 14, characterized in that, The cushion is provided with a second recess to avoid the ear; The cushion is equipped with a chin support.

16. The head fixation device according to claim 14, characterized in that, The cushion is configured to move in response to the movement of the peripheral fastener.

17. The head fixation device according to claim 1, characterized in that, The peripheral fastener is configured in an arc shape, with the arc-shaped opening corresponding to the neck.

18. The head fixation device according to claim 17, characterized in that, The peripheral fixing member is formed as a single arc shape, and the number of driving members is one.

19. The head fixation device according to claim 17, characterized in that, The peripheral fixing component includes multiple arc-shaped components, and the number of driving components is the same as the number of arc-shaped components. All the driving components drive each arc-shaped component synchronously.

20. The head fixation device according to claim 1, characterized in that, The central axis of the peripheral fixing member and the central axis of the examination bed are located on the same vertical plane.

21. An examination bed, characterized in that, Includes a bed and a head fixation device for medical scanning according to any one of claims 1 to 20.

22. A medical scanning device, characterized in that, It includes an examination bed, a detector, and a head fixation device for medical scanning according to any one of claims 1 to 20.

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