Hand fixation mechanism for CT scan bed

Abstract

The utility model relates to CT inspection technical field especially, more particularly to a hand fixing mechanism for CT scan bed, this hand fixing mechanism for CT scan bed, including putting hand board, fender and bandage, putting hand board is connected with the bed body rotation through first adjusting assembly, fender is connected with putting hand board rotation through second rotation subassembly, and the detachable connection of bandage is between two fender hand board. Through putting hand board can place support to patient hand, through fender can shield to patient hand, can prevent patient's hand and deviate from the predetermined position of falling or, through bandage between two fender hand board, can with the body of patient's hand and stable fixation in suitable position, further enhanced the fixed effect of whole, through first adjusting assembly and second rotation subassembly can adjust the angle of putting hand board and fender, can according to the body type of different patient, demand or the flexible adjustment of scanning condition, enhanced the applicability of mechanism.

Description

Technical Field

[0001] This utility model relates to the field of CT examination technology, and in particular to a hand fixation mechanism for a CT scanning bed. Background Technology

[0002] In clinical diagnosis, the accuracy of CT and DSA scan images is crucial for disease diagnosis and treatment. During CT scans, even slight movements of the patient's body can introduce motion artifacts. Studies show that 15%-20% of CT image quality problems are related to patient limb movement, with hand movement accounting for a significant proportion, severely interfering with the physician's observation of anatomical structures. These artifacts may obscure lesion details, leading to misdiagnosis or missed diagnosis, posing a significant challenge to accurately assessing the degree of vascular stenosis and lesion location. Currently, most clinical practice involves patients simply placing their hands naturally at their sides or using simple restraints, a method lacking precise positioning and stable support, failing to meet the higher standards of stability, comfort, and accuracy required for accurate diagnosis.

[0003] A multifunctional CT scanning bed, with publication number CN209252906U, includes a bed board, a support plate, and a bracket. The bracket is installed at the lower end of the bed board, and the front side of the bed board has a recessed groove. A vertical rotating shaft is installed inside the groove. Before a CT scan, when performing upper limb vein puncture, the support plate can be rotated out from the groove to place the patient's arm on it for venous puncture, facilitating the procedure and improving the efficiency of medical staff. However, for obese patients or those under anesthesia during surgery, involuntary hand movement can cause the hand to slip, affecting the scanning results. Therefore, the development of a hand fixation device specifically for CT and DSA scanning beds is urgently needed. This could effectively reduce repeated examinations, provide reliable evidence for clinical diagnosis, and improve the overall level of medical services. Utility Model Content

[0004] The purpose of this invention is to address the problem in existing technologies where obese patients or those undergoing anesthesia may involuntarily move their hands, causing them to slip and affecting scanning results. This invention provides a hand fixation mechanism for a CT scanning bed. The mechanism uses a hand support plate to place and support the patient's hand, a hand shield to cover the hand, and a strap between the two hand shields to stably fix the patient's hand to the body in a suitable position, further enhancing the overall fixation effect.

[0005] To achieve the above objectives, a hand fixation mechanism for a CT scanning bed is provided, comprising a hand release plate, a hand stop plate, and a strap. The hand release plate is rotatably connected to the bed body via a first adjustment assembly, the hand stop plate is rotatably connected to the hand release plate via a second rotation assembly, and the strap is detachably connected between the two hand stops. The strap is used to fix the patient.

[0006] As a further description of the above technical solution: the hand stop plate is provided with a strap groove.

[0007] As a further description of the above technical solution: a soft sponge is provided in the middle of the strap, and Velcro is provided at both ends of the strap. The strap passes through the strap groove and is connected to the hand stop plate.

[0008] As a further description of the above technical solution: the handrail is provided on the hand rest board.

[0009] As a further description of the above technical solution: the first adjustment component includes a connecting seat, the connecting seat is connected to the drive shaft through a bearing seat, the drive shaft is connected to the release plate, and one end of the drive shaft is connected to the drive motor.

[0010] As a further description of the above technical solution: the second rotating assembly includes a rotating shaft, one end of which is connected to the hand release plate via a bearing seat, the other end of which is connected to a ratchet, and the rotating shaft is connected to the hand stop plate. A check pawl is provided on one side of the ratchet. The ratchet and the check pawl are connected inside the protective shell. One end of the check pawl is connected to an adjustment button. A return spring is provided below the adjustment button and is connected to the protective shell.

[0011] As a further description of the above technical solution: each of the handstops has at least one strap groove, which is located at the end of the handstop away from the release plate.

[0012] As a further description of the above technical solution: one side of the first adjustment component is connected to the mounting frame, the mounting frame is detachably connected to the bed frame by bolts, and a rubber pad is provided inside the mounting frame.

[0013] The above technical solution has the following advantages or beneficial effects: This invention uses a hand support plate to place and support the patient's hand, and a hand shield to cover the patient's hand, preventing the hand from slipping or deviating from the predetermined position. A strap between the two hand shields securely fixes the patient's hand to the body in a suitable position, further enhancing the overall fixation effect. The angles of the hand support plate and the hand shield can be adjusted using a first adjustment component and a second rotation component, allowing for flexible adjustments based on different patient body shapes, needs, or scanning conditions, thus enhancing the applicability of the mechanism. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation of the hand fixing mechanism in one embodiment of the present utility model; Figure 2 This is a schematic diagram of the hand fixing mechanism in one embodiment of the present invention; Figure 3 This is a front view of a hand fixing mechanism in one embodiment of the present invention; Figure 4 for Figure 2 A schematic diagram of the structure of the second rotating component; Figure 5 for Figure 3 Schematic diagram of the structure of the inner protective shell; Figure 6 for Figure 2 A schematic diagram of the adjustment button.

[0015] Legend: 1. Handrest plate; 2. Hand stop plate; 3. Straps; 4. First adjustment assembly; 5. Bed frame; 6. Second rotation assembly; 7. Strap groove; 8. Soft sponge; 9. Velcro; 10. Handrail; 11. Mounting frame; 12. Bolt; 13. Rubber pad; 41. Connecting seat; 42. Drive shaft; 43. Drive motor; 61. Rotating shaft; 62. Ratchet; 63. Check pawl; 64. Protective shell; 65. Adjustment button; 66. Return spring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] like Figure 1-6 As shown, the present invention provides a hand fixation mechanism for a CT scanning bed, comprising a hand release plate 1, a hand stop plate 2, and a strap 3. The hand release plate 1 is rotatably connected to the bed body 5 via a first adjustment component 4, the hand stop plate 2 is rotatably connected to the hand release plate 1 via a second rotation component 6, and the strap 3 is detachably connected between the two hand stop plates 2. The strap 3 is used to fix the patient.

[0020] In the technical solution of this utility model, the hand support plate 1 can be used to place and support the patient's hand, and the hand shield plate 2 can be used to shield the patient's hand, preventing the patient's hand from slipping or deviating from the predetermined position, effectively improving the accuracy and stability of scanning. The strap 3 between the two hand shield plates 2 can stably fix the patient's hand and body in a suitable position, further enhancing the overall fixation effect. The strap 3 can not only prevent the patient from moving unconsciously, but also ensure that the patient maintains a stable posture during scanning, thereby avoiding image distortion or damage to scanning quality. The angles of the hand support plate 1 and the hand shield plate 2 can be adjusted by the first adjustment component 4 and the second rotation component 6, which can be flexibly adjusted according to different patient body shapes, needs or scanning conditions, enhancing the applicability of the mechanism.

[0021] like Figure 2 and Figure 4 As shown, specifically, the hand stop 2 has a strap groove 7; the strap groove 7 facilitates the binding of the strap 3 onto the hand stop 2, and the strap 3 can bind the patient's hand and body.

[0022] Each hand stop plate 2 has at least one strap groove 7, which is located at the end of the hand stop plate 2 away from the release plate 1.

[0023] like Figure 2 and Figure 3 As shown, specifically, a soft sponge 8 is provided in the middle of the bandage 3, and Velcro 9 is provided at both ends of the bandage 3. The bandage 3 passes through the bandage groove 7 and is connected to the hand stop plate 2. By fixing the patient's body with the soft sponge 8 in the middle of the bandage 3, pressure sores can be avoided. After the Velcro 9 at both ends of the bandage 3 passes through the bandage groove 7 and is fixed to the hand stop plate 2, it is convenient to install and remove the bandage 3, which enhances the practicality of the bandage 3.

[0024] like Figure 2 and Figure 4 As shown, specifically, the handrest 1 is equipped with a handrail 10; the handrail 10 can effectively help fix the patient's hand, making it more securely fixed on the handrest and preventing the patient's hand from moving or changing posture unconsciously. Especially during high-precision scanning, the handrail helps ensure that the hand is always kept in the correct position, thereby improving the clarity and accuracy of the scanned image.

[0025] like Figure 2 and Figure 3 As shown, specifically, the first adjustment component 4 includes a connecting seat 41, which is connected to the drive shaft 42 via a bearing seat. The drive shaft 42 is connected to the handrest plate 1, and one end of the drive shaft 42 is connected to the drive motor 43. By controlling the operation of the drive motor 43, the drive shaft 42 can be rotated. The rotation of the drive shaft 42 can rotate the handrest plate 1, and the angle of the handrest plate 1 can be adjusted to facilitate support for the patient's hands. The drive motor 43 can rotate the handrest plate 1 to the bottom of the bed 5, preventing the handrest plate 1 and the handrest plate 2 from affecting the patient's getting in and out of bed, thus enhancing the practicality of the mechanism.

[0026] like Figure 5 and Figure 6 As shown, specifically, the second rotating assembly 6 includes a rotating shaft 61. One end of the rotating shaft 61 is connected to the release plate 1 via a bearing seat, and the other end of the rotating shaft 61 is connected to a ratchet 62. The rotating shaft 61 is also connected to the stop plate 2. A check pawl 63 is provided on one side of the ratchet 62. The ratchet 62 and the check pawl 63 are connected inside the protective shell 64. One end of the check pawl 63 is connected to an adjustment button 65. A return spring 66 is provided below the adjustment button 65 and is connected to the protective shell 64. By pressing the stop plate 2, the rotating shaft 61 and the ratchet 62 can be rotated, and the angle between the release plate 1 and the stop plate 2 can be adjusted. By adjusting the angle of the stop plate 2, the tightness of the strap 3 can be adjusted. The check pawl 63 can extend into and leave the tooth groove of the ratchet 62, thereby preventing the stop plate 2 from springing back during the adjustment process. By pressing the adjustment button 65, the check pawl 63 can move away from the ratchet 62, making it convenient to return the stop plate 2 to its original position.

[0027] like Figure 1 and Figure 2 As shown, specifically, one side of the first adjustment component 4 is connected to the mounting frame 11, and the mounting frame 11 is detachably connected to the bed frame 5 by bolts 12. A rubber pad 13 is provided inside the mounting frame 11. The mounting frame 11 is detachably connected to the bed frame 5 by bolts 12 passing through threaded holes on the mounting frame 11, which facilitates the adjustment of the position of the first adjustment component 4, the handrest plate 1, and the handstop plate 2 to accommodate patients of different heights.

[0028] Working principle: The hand support plate 1 provides support for the patient's hand, while the hand guard plate 2 protects the patient's hand from slipping or deviating from the predetermined position, effectively improving the accuracy and stability of the scan. The strap 3, located between the two hand guard plates 2, stably fixes the patient's hand to the body in a suitable position, further enhancing the overall fixation effect. The strap 3 not only prevents the patient from moving unconsciously but also ensures that the patient maintains a stable posture during the scan, thereby avoiding image distortion or damage to scan quality. The angles of the hand support plate 1 and the hand guard plate 2 can be adjusted through the first adjustment component 4 and the second rotation component 6, allowing for flexible adjustments based on different patient body types, needs, or scanning conditions, enhancing the applicability of the mechanism.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hand restraint mechanism for a CT scanning bed, characterized in that, The device includes a hand release board (1), a hand stop board (2), and a strap (3). The hand release board (1) is rotatably connected to the bed body (5) via a first adjustment component (4). The hand stop board (2) is rotatably connected to the hand release board (1) via a second rotation component (6). The strap (3) is detachably connected between the two hand stop boards (2) and is used to fix the patient.

2. The hand restraint mechanism for a CT scanning bed according to claim 1, characterized in that: The hand stop (2) has a strap groove (7).

3. A hand restraint mechanism for a CT scanning bed according to claim 2, characterized in that: The strap (3) has a soft sponge (8) in the middle and Velcro (9) at both ends. The strap (3) passes through the strap groove (7) and is connected to the hand stop (2).

4. A hand restraint mechanism for a CT scanning bed according to claim 1, characterized in that: The handrail (1) is provided with a handrail (10).

5. A hand restraint mechanism for a CT scanning bed according to claim 1, characterized in that: The first adjustment component (4) includes a connecting seat (41), which is connected to the drive shaft (42) via a bearing seat. The drive shaft (42) is connected to the release plate (1), and one end of the drive shaft (42) is connected to the drive motor (43).

6. A hand restraint mechanism for a CT scanning bed according to claim 1, characterized in that: The second rotating assembly (6) includes a rotating shaft (61), one end of which is connected to the release plate (1) via a bearing seat, and the other end of which is connected to a ratchet (62). The rotating shaft (61) is connected to the stop plate (2). A check pawl (63) is provided on one side of the ratchet (62). The ratchet (62) and the check pawl (63) are connected inside the protective shell (64). One end of the check pawl (63) is connected to the adjustment button (65). A return spring (66) is provided below the adjustment button (65). The return spring (66) is connected to the protective shell (64).

7. A hand restraint mechanism for a CT scanning bed according to claim 2, characterized in that: Each of the handstops (2) has at least one strap groove (7) located at the end of the handstop (2) away from the release plate (1).

8. A hand restraint mechanism for a CT scanning bed according to claim 1, characterized in that: The first adjustment component (4) is connected to the mounting frame (11) on one side. The mounting frame (11) is detachably connected to the bed body (5) by bolts (12). A rubber pad (13) is provided inside the mounting frame (11).

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