Adjustable head and arm supporting device

Abstract

The utility model relates to an adjustable head and arm supporting device which comprises a head supporting module (1) and arm supporting modules (2) symmetrically installed on the two sides of the head supporting module (1). The head supporting module (1) comprises a base (11) and a sponge headrest (12) installed on the base (11), and a height adjusting supporting frame (13) is installed on the back of the sponge headrest (12). The arm supporting module (2) comprises a shell (21) and an arm supporting assembly (22) which is arranged in the shell (21) and can move horizontally. The arm supporting assembly (22) comprises a bottom support (221) and a lifting support (222) telescopically arranged in the bottom support (221), and the top of the lifting support (222) is provided with an arm support (223) used for supporting an arm. Compared with the prior art, the head and arm supporting device can be adjusted in a targeted mode according to the body type and detection requirements of a detected person so as to stably support the head and arms of the detected person, and better-quality images can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary instruments, in particular to an adjustable head and arm support device. Background Art

[0002] Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) are the most commonly used imaging examination methods in current clinical work. Among them, enhanced scanning is an important part of the two examination methods. It increases the image difference between lesions and normal tissue organs by injecting contrast agents intravenously and then combining CT or MRI scans, thus significantly improving the detection rate of suspicious lesions and having important application value in the field of medical imaging.

[0003] However, since enhanced scanning usually requires establishing a venous access in the median cubital vein or the dorsal vein of the hand, and considering the situation of keeping the arm as far away from the scanning area as possible to avoid image interference, etc., therefore, a considerable part of enhanced scans require the arms to be lifted backward. In addition, considering that the examination duration of enhanced scanning is relatively long, ranging from five to twenty minutes, if a head and arm support device is not used, the long-term backward lifting of the arms may cause: ① the examinee to feel discomfort or fatigue; ② the head and arms of the examinee may shake; ③ discomfort such as tremors and soreness will also affect the examinee's cooperation in breath-holding; ④ the arms cannot be lifted and stretched, and a large amount of beam hardening artifacts will be generated when the elbows are lower than the shoulders; ⑤ excessive bending of the arms may cause the indwelling needles in the elbows to bend and slip, damaging the blood vessels and increasing the risk of contrast agent extravasation. In addition, due to factors such as excessive bending of the elbows and tight shoulder muscles compressing the blood vessels, it will cause the contrast agent to be retained in the median cubital vein and the subclavian vein, affecting the calculation of the delay time of enhanced scanning and unable to capture the images in the best period. The retention of a large amount of contrast agent will also generate beam hardening artifacts, affecting the image quality at the apex of the lung.

[0004] All of the above factors may indirectly lead to poor image quality, thus affecting the doctor's judgment. Therefore, in order to obtain more accurate and clear images and improve the comfort of patients, it is recommended to use a head and arm support in enhanced scanning to support the patient's head and arms.

[0005] The head and arm supports currently used in clinical work have the following defects:

[0006] ① Not applicable to middle-aged and elderly people with limited shoulder mobility: For middle-aged and elderly people, especially those with periarthritis of the shoulder, after clavicle and humerus surgery, etc., their shoulder mobility may be limited. If the design of the head and arm support does not fully consider this point, it may cause the patient to feel discomfort or pain during the examination, thus affecting the smooth progress of the examination.

[0007] ②The armrest angle and position are fixed and cannot be adapted to each subject: The body shapes, heights, weights, and joint ranges of motion of each subject are different. If the armrest angle and position of the head and arm support are fixed, it may not be able to meet the needs of all patients. This may cause discomfort to some patients during the examination, thereby increasing the difficulty of the examination.

[0008] ③The angle of the headrest is fixed and is horizontal or small. During clinical examinations, some elderly people have kyphosis due to degenerative diseases of the cervical and thoracic vertebrae and are unable to place their heads on the headrest. The pain of the head hanging in the air makes it impossible for them to cooperate with the examination, and they can only place some personal items under their heads. Items such as coats and bags contain metal. As the patient moves or the items loosen, the metal parts are likely to enter the scanning field, resulting in radial artifacts in the image and affecting the diagnosis.

[0009] ④It can only support the upper arm and does not have an armrest for the forearm: Most of the existing head and arm supports can only support the upper arm and do not provide support for the forearm. This may cause the subject to unconsciously bend the arm significantly during the examination to reduce discomfort, thereby compressing the vascular access and affecting the injection of contrast agent and the image quality.

[0010] The prior art CN215687973U discloses a CT auxiliary instrument for pulmonary embolism. Two support plates are installed on the bearing plate of the device. The hands of the subject can be fixed through the binding members, and then through the close cooperation of bolts and nuts, the inclination angles of the two support plates can be adjusted. It can not only effectively fix the hands of the patient at a certain angle, but also make the patient more comfortable during a long CT examination by using the support of the two support plates.

[0011] The above prior method can well fix the arms of the subject, but this method requires a large bearing plate to be used in combination, and the head and foot directions need to be adjusted according to different examination items during the clinical examination. When the subject has a different body shape or is inconvenient to move, the device also needs to be moved back and forth. The device cannot be used flexibly and conveniently. The angle of the headrest of the device is horizontal and lacks adjustability. The included angle between the forearm and the upper arm is fixed by the two support plates of this method and cannot be applied to people whose arms cannot be straightened and stretched. The binding fixation method will also cause great psychological pressure on the subject and cannot make the subject undergo the examination comfortably. The magic tape is easy to hook and damage the subject's clothes, and the service life of the magic tape is short, reducing the use efficiency of the binding member and increasing the maintenance cost.

[0012] Therefore, there is an urgent need to develop a new type of support device that can be used to support the head and arms of patients during enhanced scanning. Summary of the Utility Model

[0013] The purpose of the present utility model is to provide an adjustable head and arm support device to overcome the defect that the existing head and arm support device cannot be flexibly adjusted according to the needs of patients.

[0014] The purpose of the present utility model can be achieved by the following technical solutions:

[0015] An adjustable head and arm support device includes a head support module and arm support modules symmetrically installed on both sides of the head support module;

[0016] The head support module includes a base and a sponge headrest installed on the base. A height adjustment support frame is installed on the back of the sponge headrest;

[0017] The arm support module includes a housing and an arm support assembly that can move horizontally inside the housing; the arm support assembly includes a bottom bracket and a lifting bracket that is telescopically arranged on the bottom bracket. An armrest for supporting the arm is provided at the top of the lifting bracket.

[0018] Furthermore, the sponge headrest is provided with a head groove that fits the curve of the head.

[0019] Furthermore, a support frame installation groove is provided on the back of the sponge headrest.

[0020] Furthermore, one end of the height adjustment support frame is rotatably installed in the support frame installation groove through a pin shaft, and the other end of the height adjustment support frame abuts against the base.

[0021] Furthermore, a plurality of height adjustment grooves are equidistantly arranged on the base.

[0022] Furthermore, one end of the height adjustment support frame is rotatably connected to the back of the sponge headrest, and the other end of the height adjustment support frame abuts in the height adjustment groove.

[0023] Furthermore, the bottom of the sponge headrest is rotatably installed on the base through a rotating member.

[0024] Furthermore, the rotating member includes a set of fixed connection parts installed on the base and a connecting shaft arranged inside the sponge headrest and rotatably installed between the fixed connection parts.

[0025] Furthermore, a moving track for the arm support assembly to move is provided inside the housing.

[0026] Furthermore, a groove that can slide on the moving track is provided at the bottom of the bottom bracket, and an anti-slip layer that is in frictional contact with the moving track is provided on the inner wall of the groove.

[0027] Furthermore, a horizontal cross groove is provided on one side of the housing away from the head support module.

[0028] Furthermore, the bottom bracket is connected to a moving handle which can drive the bottom bracket to move horizontally.

[0029] Furthermore, the outer diameter of the lifting bracket is smaller than the outer diameter of the bottom bracket.

[0030] Furthermore, a rubber layer is provided on the inner wall of the bottom bracket, and the lifting bracket is in frictional contact with the rubber layer.

[0031] Furthermore, the lifting bracket is provided with a first limiter capable of preventing the lifting bracket from continuing to descend and a second limiter capable of preventing the lifting bracket from continuing to ascend.

[0032] Furthermore, a first arm support component for supporting the upper arm and a second arm support component for supporting the forearm are provided in the shell.

[0033] Furthermore, the bottom bracket and the lifting bracket of the second arm support assembly are both higher than those of the first arm support assembly.

[0034] Furthermore, a spherical rotating member is rotatably mounted on the top of the lifting bracket, and the arm support is connected to the spherical rotating member via a connecting rod.

[0035] Compared with the prior art, the utility model has the following beneficial effects:

[0036] (1) The adjustable head-arm support device of the utility model includes a head support module with adjustable tilt angle and height and an arm support module with adjustable horizontal position and height. Medical staff can make targeted adjustments according to the patient's body shape and detection requirements, so as to stably support the subject's head and arms, reduce patient fatigue, and reduce image blur caused by movement or tremor, so as to obtain better quality images.

[0037] (2) The head-arm support device of the utility model is provided with a support frame capable of adjusting the height in multiple gears and a corresponding height adjustment slot. The angle and height of the sponge headrest can be adjusted to meet the detection needs of people with hunchbacks, dizziness, breathing difficulties, etc.

[0038] (3) The lifting bracket of the utility model can flexibly adjust the height and fix it after adjustment, so that patients with periarthritis of shoulder, fracture surgery, etc. who are inconvenient to raise their arms can support their arms as naturally and relaxedly as possible.

[0039] (4) The adjustable head-arm support device of the utility model can be specifically provided with a group of arm support components, which can support the patient's upper arm and forearm respectively, and can help the examinee to stretch his arm, keep the blood vessels unobstructed, and improve the success rate of the enhanced examination.

[0040] (5) The adjustable head and arm support device of the present utility model can be provided with a spherical rotating member that can rotate freely within a certain range, enabling the armrest to better fit the arms of examinees with inconvenient upper limb movements such as those suffering from frozen shoulder or after fracture surgery, thereby further improving the comfort of patients during examination and the image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of the adjustable head and arm support device of the present utility model.

[0042] Figure 2 It is a schematic diagram of the structure of the head support module of Embodiment 2 of the present utility model.

[0043] Figure 3 It is a schematic diagram of the structure of the rotating member of Embodiment 3 of the present utility model.

[0044] Figure 4 It is a schematic diagram of the folded structure of the head support module of Embodiment 3 of the present utility model.

[0045] Figure 5 It is a schematic diagram of the structure of the arm support module of Embodiment 4 of the present utility model.

[0046] Figure 6 It is a schematic diagram of the structure of the arm support assembly of Embodiment 4 of the present utility model.

[0047] Figure 7 It is a schematic diagram of the bottom surface of the bottom bracket of Embodiment 4 of the present utility model.

[0048] Figure 8 It is a schematic sectional view of the bottom bracket of Embodiment 5 of the present utility model.

[0049] Figure 9 It is a schematic diagram of the structure of the lifting bracket of Embodiment 5 of the present utility model.

[0050] Figure 10 It is a schematic sectional view of the lifting bracket of Embodiment 5 of the present utility model.

[0051] Figure 11 It is a schematic diagram of the structure of the arm support module of Embodiment 6 of the present utility model.

[0052] Figure 12 It is a schematic diagram after the armrest rotates in Embodiment 7 of the present utility model.

[0053] Explanation of the marks in the figure:

[0054] 1 - Head support module, 11 - Base, 111 - Height adjustment groove, 12 - Sponge headrest, 121 - Head groove, 122 - Support frame installation groove, 13 - Height adjustment support frame, 14 - Rotating part, 141 - Fixed connection part, 142 - Connecting shaft;

[0055] 2 - Arm support module, 21 - Outer shell, 22 - Arm support assembly, 22a - First arm support assembly, 22b - Second arm support assembly, 221 - Bottom bracket, 2211 - Anti - slip layer, 222 - Lifting bracket, 2221 - First limit piece, 2222 - Second limit piece, 223 - Armrest, 224 - Moving handle, 225 - Rubber layer, 226 - Spherical rotating piece, 227 - Connecting rod, 23 - Moving track, 24 - Horizontal groove. Detailed implementation mode

[0056] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present utility model, and gives the detailed implementation mode and specific operation process, but the protection scope of the present utility model is not limited to the following embodiments.

[0057] In the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" 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 an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0058] It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0059] Embodiment 1:

[0060] An adjustable head - arm support device includes a head support module 1 and arm support modules 2 symmetrically installed on both sides of the head support module 1.

[0061] Among them, the head support module 1 includes a base 11 and a sponge headrest 12 mounted on the base 11. A height adjustment support frame 13 is mounted on the back of the sponge headrest 12. The inclination angle and height of the sponge headrest 12 can be adjusted through the height adjustment support frame 13, so as to meet the needs of different patients.

[0062] The arm support module 2 includes a housing 21 and an arm support assembly 22 disposed inside the housing 21 and capable of moving horizontally. The arm support assembly 22 includes a bottom bracket 221 and a lifting bracket 222 telescopically disposed on the bottom bracket 221. An armrest 223 for supporting the arm is provided at the top of the lifting bracket 222. When the patient places the arm behind and on the armrest 223, the medical staff can adjust the horizontal position of the arm support assembly 22 and the height of the lifting bracket 222 to meet the detection needs of patients with different body types.

[0063] Embodiment 2:

[0064] An adjustable head and arm support device includes a head support module 1 and arm support modules 2 symmetrically mounted on both sides of the head support module 1. Among them, the head support module 1 includes a base 11 and a sponge headrest 12 mounted on the base 11. A height adjustment support frame 13 is mounted on the back of the sponge headrest 12.

[0065] The difference from Embodiment 1 is that the sponge headrest 12 of this embodiment is provided with a head groove 121 that fits the head curve, which can effectively improve the comfort of the patient during detection. The part of the sponge headrest 12 in contact with the human body is made of a detachable skin-friendly fabric, and the skin-friendly fabric is mounted on the sponge headrest 12 in the form of a magic tape, which is convenient for disassembly and disinfection.

[0066] A support frame mounting groove 122 is formed on the back of the sponge headrest 12. One end of the height adjustment support frame 13 is rotatably mounted in the support frame mounting groove 122 through a pin shaft, and the other end of the height adjustment support frame 13 abuts against the base 11.

[0067] Embodiment 3:

[0068] An adjustable head and arm support device includes a head support module 1 and arm support modules 2 symmetrically mounted on both sides of the head support module 1. Among them, the head support module 1 includes a base 11 and a sponge headrest 12 mounted on the base 11. A height adjustment support frame 13 is mounted on the back of the sponge headrest 12.

[0069] In order to enable the height-adjustable support frame 13 to be flexibly adjusted among different height gears, a plurality of height adjustment slots 111 are equidistantly arranged on the base 11 of this embodiment. One end of the height-adjustable support frame 13 is rotatably connected to the back of the sponge headrest 12, and the other end of the height-adjustable support frame 13 can abut against different height adjustment slots 111, so as to realize tilting at different angles and then adjust the overall height.

[0070] In order to enable the sponge headrest 12 to be flexibly adjusted in height, the bottom of the sponge headrest 12 is rotatably installed on the base 11 through a rotating member 14. The rotating member 14 includes a set of fixed connection parts 141 installed on the base 11 and a connecting shaft 142 arranged in the sponge headrest 12 and rotatably installed between the fixed connection parts 141. Both ends of the connecting shaft 142 are fixedly installed in the sponge headrest 12. By rotating the connecting shaft 142, the angle and height of the entire sponge headrest 12 can be adjusted.

[0071] Embodiment 4:

[0072] An adjustable head and arm support device includes a head support module 1 and arm support modules 2 symmetrically installed on both sides of the head support module 1. The arm support module 2 includes a housing 21 and an arm support assembly 22 arranged in the housing 21 and capable of moving horizontally. The arm support assembly 22 includes a bottom bracket 221 and a lifting bracket 222 telescopically arranged in the bottom bracket 221. An armrest 223 for supporting the arm is arranged at the top of the lifting bracket 222.

[0073] In order to enable medical staff to adjust the position of the arm support assembly 22 according to the patient's physical condition and to satisfy the movement and fixation of the arm support assembly 22 in the housing 21, a moving track 23 for the arm support assembly 22 to move is arranged in the housing 21 of this embodiment. The moving track 23 is horizontally arranged and both ends of the moving track 23 are connected to the inner wall of the housing 21. A through channel is opened at a position near the bottom of the bottom bracket 221 of the arm support assembly 22, so that the arm support assembly 22 can move horizontally along the moving track 23. A groove capable of sliding on the moving track 23 is opened at the bottom of the bottom bracket 221, and an anti-slip layer 2211 in frictional contact with the moving track 23 is arranged on the inner wall of the groove. The anti-slip layer 2211 made of rubber can appropriately increase the friction with the moving track 23 during movement, so that the arm support assembly 22 has a certain sense of friction during movement, thus satisfying the stability during movement and fixation.

[0074] In order to further improve the stability of the arm support assembly 22 when sliding on the moving track 23 and prevent the arm support assembly 22 from disengaging from the moving track 23, the moving track 23 of this embodiment is set as an inverted trapezoid, and the anti-slip layer 2211 at the bottom of the bottom bracket 221 is also correspondingly set as an inverted trapezoid structure, so that the bottom bracket 221 plays a fixing role when sliding on the moving track 23, thereby preventing the arm support assembly 22 from disengaging from the moving track 23.

[0075] To facilitate the medical staff to operate on the outer shell 21 to pull the arm support assembly 22 to move horizontally, a horizontal cross slot 24 is provided on the side of the outer shell 21 away from the head support module 1 in this embodiment. The bottom bracket 221 is connected with a moving handle 224 that can drive the bottom bracket 221 to move horizontally. The moving handle 224 is arranged outside the outer shell 21, and the moving handle 224 is fixedly connected to the bottom bracket 221 of the arm support assembly 22 through a connecting shaft vertically passing through the cross slot 24, so that the moving handle 224 can move horizontally along the direction of the cross slot 24. The medical staff can directly pull the moving handle 224 outside the outer shell 21 to drive the arm support assembly 22 to horizontally adjust its position along the moving track 23.

[0076] Embodiment 5:

[0077] An adjustable head and arm support device includes a head support module 1 and arm support modules 2 symmetrically installed on both sides of the head support module 1. The arm support module 2 includes an outer shell 21 and an arm support assembly 22 that can move horizontally inside the outer shell 21. The arm support assembly 22 includes a bottom bracket 221 and a lifting bracket 222 that is telescopically arranged inside the bottom bracket 221, and an armrest 223 for supporting the arm is provided at the top of the lifting bracket 222.

[0078] Considering that some patients are inconvenient to lift their arms due to reasons such as periarthritis of shoulder and after fracture surgery, it is necessary to flexibly adjust the height of the lifting bracket 222 and fix it to allow the patients to place their arms as naturally and relaxedly as possible. The outer diameter of the lifting bracket 222 in this embodiment is smaller than the outer diameter of the bottom bracket 221. A rubber layer 225 is fixedly installed on the inner wall of the bottom bracket 221. The lifting bracket 222 is in frictional contact with the rubber layer 225. The height of the lifting bracket 222 is adjusted by manually pulling the lifting bracket 222, and the automatic fixing after releasing the hand can be realized through the friction between the rubber layer 225 and the inner wall of the bottom bracket 221.

[0079] The lifting bracket 222 is provided with a first limiting member 2221 that can prevent the lifting bracket 222 from descending further and a second limiting member 2222 that can prevent the lifting bracket 222 from ascending further. Both the first limiting member 2221 and the second limiting member 2222 are annular structures sleeved on the outer wall of the lifting bracket 222, and they play a limiting role when contacting the fixed rubber layer 225. Through the limiting action of the first limiting member 2221 and the second limiting member 2222, the height of the lifting bracket 222 can be flexibly adjusted within a certain range.

[0080] Embodiment 6:

[0081] An adjustable head and arm support device includes a head support module 1 and arm support modules 2 symmetrically installed on both sides of the head support module 1. The arm support module 2 includes a housing 21 and an arm support assembly 22 that can move horizontally within the housing 21. The arm support assembly 22 includes a bottom bracket 221 and a lifting bracket 222 that is telescopically arranged within the bottom bracket 221. A armrest 223 for supporting the arm is provided at the top of the lifting bracket 222.

[0082] Considering that most of the existing brackets can only support the upper arm and do not provide support for the forearm, this may cause the subject to unconsciously bend the arm significantly during the examination to reduce discomfort, thereby compressing the vascular access. Therefore, in this embodiment, a set of arm support assemblies 22 are specifically arranged within the housing 21, namely a first arm support assembly 22a for supporting the upper arm and a second arm support assembly 22b for supporting the forearm. The heights of the bottom bracket and the lifting bracket of the second arm support assembly 22b are both higher than those of the first arm support assembly 22a. Both arm support assemblies 22 can move horizontally and adjust their heights flexibly to provide the maximum support for the patient's forearm and lower arm. Since the overall height of the second arm support assembly 22b is higher than that of the first arm support assembly 22a, the housing 21 of this embodiment is also set to be a triangular shape with a gradually changing height, which can not only protect the internal arm support assemblies 22 but also meet the space requirements for manual adjustment.

[0083] Embodiment 7:

[0084] An adjustable head and arm support device includes a head support module 1 and arm support modules 2 symmetrically installed on both sides of the head support module 1. The arm support module 2 includes a housing 21 and an arm support assembly 22 that can move horizontally within the housing 21. The arm support assembly 22 includes a bottom bracket 221 and a lifting bracket 222 that is telescopically arranged within the bottom bracket 221. A armrest 223 for supporting the arm is provided at the top of the lifting bracket 222.

[0085] In order to further enhance the fitting and flexibility between the armrest 223 and the arm, a spherical rotating member 226 is rotatably installed at the top of the lifting bracket 222 in this embodiment, and the armrest 223 is connected to the spherical rotating member 226 through a connecting rod 227. The spherical rotating member 226 can rotate freely within a certain range, enabling the armrest 223 to better fit the arms of examinees with inconvenient upward lifting, such as those with periarthritis of shoulder or after fracture surgery, and further improving the comfort of patients during detection and the image quality. In addition, the arc portion of the armrest 223 in contact with the human arm can also adopt a detachable skin-friendly fabric with reference to the sponge headrest 12. The skin-friendly fabric is installed on the armrest 223 in the form of a magic tape, which can be easily disassembled for disinfection.

[0086] The above description of the embodiments is to enable those of ordinary skill in the art to understand and use the utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present utility model is not limited to the above embodiments, and all improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.

Claims

1. An adjustable head and arm support device, characterized in that, It includes a head support module (1) and arm support modules (2) symmetrically installed on both sides of the head support module (1); The head support module (1) includes a base (11) and a sponge headrest (12) installed on the base (11). A height-adjustable support frame (13) is installed on the back of the sponge headrest (12); The arm support module (2) includes a housing (21) and an arm support assembly (22) that can move horizontally inside the housing (21); The arm support assembly (22) includes a bottom bracket (221) and a lifting bracket (222) telescopically installed on the bottom bracket (221). An armrest (223) for supporting the arm is provided at the top of the lifting bracket (222).

2. The adjustable head and arm support device according to claim 1, characterized in that, The sponge headrest (12) is provided with a head groove (121) that fits the head curve.

3. The adjustable head and arm support device according to claim 1, characterized in that, A support frame installation groove (122) is provided on the back of the sponge headrest (12); One end of the height-adjustable support frame (13) is rotatably installed in the support frame installation groove (122) through a pin shaft, and the other end of the height-adjustable support frame (13) abuts against the base (11).

4. An adjustable head and arm support device according to claim 1, characterized in that, A plurality of height-adjustment grooves (111) are equidistantly provided on the base (11); One end of the height-adjustable support frame (13) is rotatably connected to the back of the sponge headrest (12), and the other end of the height-adjustable support frame (13) abuts in the height-adjustment groove (111).

5. An adjustable head and arm support device according to claim 1, characterized in that, The bottom of the sponge headrest (12) is rotatably installed on the base (11) through a rotating member (14); The rotating member (14) includes a set of fixed connection parts (141) installed on the base (11) and a connecting shaft (142) installed inside the sponge headrest (12) and rotatably installed between the fixed connection parts (141).

6. An adjustable head and arm support device according to claim 1, wherein, A moving track (23) for the arm support assembly (22) to move is provided inside the housing (21); A groove that can slide on the moving track (23) is provided at the bottom of the bottom bracket (221), and an anti-slip layer (2211) that is in frictional contact with the moving track (23) is provided on the inner wall of the groove.

7. An adjustable head and arm support device according to claim 1, characterized in that, A horizontal cross groove (24) is provided on one side of the housing (21) away from the head support module (1); The bottom bracket (221) is connected with a moving handle (224) that can drive the bottom bracket (221) to move horizontally.

8. An adjustable head and arm support device according to claim 1, characterized in that, The outer diameter of the lifting bracket (222) is smaller than the outer diameter of the bottom bracket (221); A rubber layer (225) is provided on the inner wall of the bottom bracket (221), and the lifting bracket (222) is in frictional contact with the rubber layer (225); A first limit member (2221) for blocking the lifting bracket (222) from continuing to descend and a second limit member (2222) for blocking the lifting bracket (222) from continuing to ascend are provided on the lifting bracket (222).

9. The adjustable head and arm support device according to claim 1, wherein, A first arm support assembly (22a) for supporting the upper arm and a second arm support assembly (22b) for supporting the forearm are provided inside the housing (21); The heights of the bottom bracket and the lifting bracket of the second arm support assembly (22b) are both higher than those of the first arm support assembly (22a).

10. The adjustable head and arm support device according to claim 1, characterized in that, A spherical rotating member (226) is rotatably mounted on the top of the lifting bracket (222), and the armrest (223) is connected to the spherical rotating member (226) through a connecting rod (227).

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