A patient hand fixator for CT room

Abstract

The utility model belongs to the technical field of hand fixer for CT room, especially, a kind of hand fixer for patient in CT room is provided.Technology includes the bottom plate of horizontal arrangement, the side of bottom plate is provided with the connecting assembly for being connected on CT pillow;The top of bottom plate is provided with fixed plate, the top of fixed plate is provided with the limiting plate made of soft material, the top of fixed plate is provided with the fixed component for the limiting plate detachable fixed on it;Limiting plate is provided with the bandage for fixing the hand of patient on it.The utility model avoids the problem that the hand of patient is not consciously tremble during CT examination, which reduces the imaging quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of hand immobilizers in CT rooms, and in particular relates to a hand immobilizer for CT room patients. Background Technology

[0002] The CT room is a department in the hospital that specializes in CT scans. CT scans can provide detailed images of the internal organs and tissues of the human body, helping doctors to detect lesions and determine their relative spatial location, size, number, etc.

[0003] During a CT scan, patients need to cross their arms above their heads. Due to the enclosed examination environment, some patients suffer from claustrophobia, while others have a potential fear of mechanical noise and radiation. As a result, about 30%-40% of patients will experience varying degrees of tension, which can lead to involuntary hand tremors. Hand tremors can cause motion artifacts (such as ghosting, blurring, or stripe interference) in the scanned images, significantly reducing image quality. Utility Model Content

[0004] The purpose of this invention is to provide a hand immobilizer for CT room patients to minimize the problem of reduced image quality caused by hand tremors.

[0005] The CT room patient hand immobilizer includes a horizontally arranged base plate, a connecting component for connecting to a CT pillow on one side of the base plate; a fixing plate on the top of the base plate, a limiting plate made of soft material on the top of the fixing plate, a fixing component for detachably fixing the limiting plate thereon on the top of the fixing plate; and a strap for fixing the patient's hand thereon on the limiting plate.

[0006] Furthermore, the connecting assembly includes a connecting plate, the bottom of which has a groove, and the left side wall of the connecting plate has a threaded hole communicating with the inside of the groove, and a fastening screw that is threadedly engaged with the groove passes through the threaded hole.

[0007] Furthermore, a soft pad is adhered to one side wall of the connecting plate.

[0008] Furthermore, the fixing component includes a clamping block, and the top of the fixing plate is provided with a slot for the limiting plate to be inserted. The clamping block is located in the slot. The right side wall of the fixing plate is provided with a threaded hole communicating with the inside of the slot. A screw rod that is threadedly engaged with the screw rod passes through the threaded hole. One end of the screw rod is rotatably connected to the clamping block, and the other end is located on the outside of the fixing plate.

[0009] Furthermore, the front sidewall of the fixing plate communicates with the slot, and a limit rod is horizontally provided on the lower left side of the clamping block, with one end of the limit rod fixed to the rear wall of the slot.

[0010] Furthermore, one end of the strap is fixed to the left side of the limiting plate, and the other end of the strap is provided with a hook and loop fastener. The right side of the limiting plate is provided with a hook and loop fastener that is adhered to the hook and loop fastener.

[0011] Furthermore, the top of the base plate is provided with a sliding groove for the fixing plate to slide left and right, and the bottom of the fixing plate slides in a left-right sliding fit with the sliding groove; a fixing block is fixed on the left side wall of the fixing plate, and a threaded hole is provided on the fixing block, and a screw that is threadedly engaged with it is inserted in the threaded hole; the top of the base plate is provided with a number of threaded blind holes for screw connection, and the number of threaded blind holes are arranged at equal intervals from left to right.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention features a base plate, a fixing plate, and a limiting plate. The limiting plate is equipped with straps for securing the patient's hand. This design, which uses straps to secure the patient's hand to the limiting plate, avoids the problem of reduced image quality caused by the patient's hand trembling involuntarily during CT examination. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 Top view of the structure;

[0016] Figure 3 This utility model is in use. Figure 1 ;

[0017] Figure 4 This utility model is in use. Figure 2 ;

[0018] The components in the diagram are named as follows: 1. Base plate; 2. Screw; 3. Limiting rod; 4. Fixing plate; 5. Fixing block; 6. Screw; 7. Threaded blind hole; 8. Velcro surface; 9. Strap; 10. Limiting plate; 11. Clamping block; 12. Velcro hook surface; 13. Fastening screw; 14. Connecting plate; 15. Pad; 16. CT bed; 17. CT pillow; 18. Hand. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. Example

[0020] This embodiment describes a hand immobilizer for patients in a CT room, such as... Figure 1 As shown, it includes a horizontally set base plate 1, which is used to place on the CT bed 16 next to the CT pillow 17 during a CT examination.

[0021] like Figure 1 and Figure 3 As shown, a connecting plate 14 is provided on one side of the base plate 1. A groove is formed at the bottom of the connecting plate 14, and a threaded hole communicating with the inside of the groove is formed on the left side wall of the connecting plate 14. A fastening screw 13, threadedly engaged with the groove, passes through the threaded hole. This section of the design constitutes a connecting assembly for connection to the CT pillow 17. Figure 3 Regarding the orientation of the CT pillow 17, this design uses two sets of connectors: one set installed on the left side of the CT pillow 17, and the other set installed on the right side. When installed on the left side of the CT pillow 17, the connecting plate 14 is fixed to the right side of the base plate 1, and the connecting plate 14 is tilted with the left side higher than the right. When installed on the right side of the CT pillow 17, the connecting plate 14 is installed on the left side of the base plate 1, and the connecting plate 14 is tilted with the left side lower than the right. When the groove is created, the CT pillow 17 has a "U" shaped structure, and the groove at the bottom of the connecting plate 14 is designed according to the left and right sides of the CT pillow 17, so that the connecting plate 14 can be inserted into the left and right sides of the CT pillow 17. Figure 3 As can be seen from the orientation, when the groove at the bottom of the connecting plate 14 is inserted into the left and right parts of the CT pillow 17, by tightening the fastening screw 13, the fastening screw 13 is pressed against the CT pillow 17, which can limit the connecting plate 14 to the CT pillow 17, thereby connecting the base plate 1 to the CT pillow 17; after the base plate 1 is limited, the bottom of the base plate 1 contacts the top of the CT bed 16.

[0022] In practice, the connecting component can also be a fixing clip, with the base plate 1 fixed together with the fixing clip, and then clamped to the left or right side of the CT pillow 17 by the fixing clip. Alternatively, the base plate 1 can be connected to the left or right side of the CT pillow 17.

[0023] like Figure 1 and Figure 3 As shown, a soft pad 15 is adhered to one side wall of the connecting plate 14. The soft pad 15 can be adhered to the connecting plate 14 with glue or tape. When the connecting plate 14 is fixed to the left side of the CT pillow 17, the soft pad 15 is adhered to the right side wall of the connecting plate 14. When the connecting plate 14 is fixed to the right side of the CT pillow 17, the soft pad 15 is adhered to the left side wall of the connecting plate 14. The soft pad 15 can be made of sponge. In use, due to the design of the soft pad 15, when the patient's head is lying on the CT pillow 17 for examination, the soft pad 15 can replace the connecting plate 14 to contact the patient's head, thus improving the comfort during the examination process.

[0024] like Figure 1As shown, a fixing plate 4 is provided on the top of the base plate 1, and a limiting plate 10 made of soft material is provided on the top of the fixing plate 4; the limiting plate 10 can be composed of polymer foam board or made of soft silicone; when in use, the patient's hand 18 is placed on the limiting plate 10, and then the limiting plate 10 can wrap the forearm of the patient's hand 18.

[0025] like Figure 1 As shown, a clamping block 11 is provided on the top of the fixing plate 4, and a slot for the limiting plate 10 to be inserted is opened on the top of the fixing plate 4. The clamping block 11 is located in the slot. A threaded hole communicating with the inside of the slot is opened on the right side wall of the fixing plate 4, and a screw 2 threadedly engages with it is inserted into the threaded hole. One end of the screw 2 is rotatably connected to the clamping block 11, and the other end is located on the outside of the fixing plate 4. This section of the solution constitutes a fixing assembly for detachably fixing the limiting plate 10 to the fixing plate 4. One end of the screw 2 is the clamping block 11. Figure 1 The left end of the middle screw 2, and its other end is Figure 1 The right end of the screw 2; when the screw 2 and the clamping block 11 are rotatably connected, a blind hole is provided on the right side wall of the clamping block 11, and a bearing is installed in the blind hole. The outer ring of the bearing is fixed in the blind hole, and the left end of the screw 2 is fixed to the inner ring of the bearing, thereby realizing the rotatable connection; in use, the limiting plate 10 is folded in half, and then the folded part away from the end of the limiting plate 10 is placed in the slot. Then, by turning the screw 2, the clamping block 11 is moved to the left, which can clamp the folded part of the limiting plate 10 between the clamping block 11 and the left wall of the slot. This design achieves the purpose of clamping and fixing the limiting plate 10. When it is necessary to disassemble the limiting plate 10, the screw 2 is turned to move the clamping block 11 to the right, so that the folded part of the limiting plate 10 can be moved out of the slot, thus achieving the purpose of disassembling the limiting plate 10. The design of facilitating the disassembly and installation of the limiting plate 10 makes it easy to clean the disassembled limiting plate 10, such as by soaking it in disinfectant. The design of cleaning the limiting plate 10 avoids the problem of cross-infection.

[0026] During implementation, a knob can be fixed to the right end of the screw 2 in the fixing assembly. The knob design makes it easier to rotate the screw 2.

[0027] like Figure 1 As shown, the front sidewall of the fixing plate 4 communicates with the slot, and a limiting rod 3 is horizontally arranged on the lower left side of the clamping block 11. One end of the limiting rod 3 is fixed to the rear wall of the slot; the limiting rod 3 is distributed front and back, and one end of the limiting rod 3 is the... Figure 1The rear end of the middle limiting rod 3; during use, because the front side wall of the fixing plate 4 is connected to the slot, the limiting plate 10 can be placed in the slot from the front side of the fixing plate 4. During placement, because the limiting rod 3 is fixed in the slot, the limiting plate 10 can pass around the bottom of the limiting rod 3. Therefore, the plate body of the limiting plate 10 wraps around the limiting rod 3, and the end of the limiting plate 10 is located on the outside of the fixing plate 4. After the limiting plate 10 passes around the bottom of the limiting rod 3, the screw 2 drives the clamping block 11 to clamp and fix the limiting plate 10. Therefore, through the design of the limiting rod 3, the limiting plate 10 can be further limited, increasing the stability of the limiting plate 10 when it is fixed. When it is necessary to disassemble the limiting plate 10, after the clamping block 11 moves to the right, the limiting plate 10 is pulled out from the slot from the front side of the fixing plate 4.

[0028] like Figure 1 and Figure 2 As shown, the limiting plate 10 is provided with straps 9 for fixing the patient's hand on it; preferably, there are three straps 9, and the three straps 9 are arranged at equal intervals along the length of the limiting plate 10; through the design of the straps 9, the patient's hand 18 can be tied to the limiting plate 10, thereby achieving the purpose of fixing the hand 18 and avoiding the problem of motion artifacts (such as ghosting, blurring or stripe interference) in the scanned image caused by hand tremors during CT examination, which significantly reduces the stability of image quality;

[0029] like Figure 1 , Figure 2 and Figure 4 As shown, one end of the strap 9 is fixed to the left side of the limiting plate 10, and the other end of the strap 9 is provided with a Velcro surface 8. The right side of the limiting plate 10 is provided with a Velcro hook surface 12 that adheres to the Velcro surface 8. In use, when the patient's hand 18 is placed on the limiting plate 10, the hand 18 can be fixed by adhering the Velcro surface 8 of the strap 9 to the Velcro hook surface 12. Therefore, it is easier to operate the strap 9 to bind the patient's hand 18. Figure 4 In the case of the patient's hand 18, when the forearm is bound to the limiting plate 10 by the strap 9, there is a gap between the two ends of the limiting plate 10, and the limiting plate 10 does not fully cover the hand 18. When the patient undergoes enhanced CT, an indwelling needle needs to be inserted into the forearm of the hand 18. The contrast agent can be injected into the body by connecting a high-pressure injector through the position of the indwelling needle. Therefore, by designing that there is a gap between the limiting plates 10, the position of the indwelling needle of the hand 18 can be placed in the gap of the limiting plates 10, which not only avoids the limiting plate 10 from squeezing the position of the indwelling needle, but also facilitates the smooth injection of the contrast agent.

[0030] like Figure 1 and Figure 2As shown, the top of the base plate 1 has a sliding groove for the fixing plate 4 to slide left and right, and the bottom of the fixing plate 4 slides in the sliding groove. A fixing block 5 is fixed to the left side wall of the fixing plate 4. The fixing block 5 has a threaded hole that is open at the top and bottom. A screw 6 that is threaded in the threaded hole is inserted into the threaded hole. The top of the base plate 1 has several threaded blind holes 7 for connecting the screw 6. The several threaded blind holes 7 are arranged at equal intervals from left to right. In use, by sliding the fixing plate 4 on the base plate 1 through the sliding groove, it is easy to adjust the distance between the fixing plate 4 and the CT pillow 17, thereby adjusting the fixation between the limiting plate 10 and the CT pillow 17. This makes it convenient for patients of different body types to use. After the limiting plate 10 is adjusted to a suitable position according to the patient's body type, the fixing block 5 can be fixed by tightening the screw 6 on the fixing block 5 into the corresponding threaded blind hole 7, thereby limiting the fixing plate 4 and the limiting plate 10.

[0031] In further optimization, except for the limiting plate 10, the Velcro surface 8, the strap 9, the Velcro hook surface 12, and the soft pad 15, all other components in this design are made of plastic or carbon fiber composite materials. This material can ensure rigid support and avoid the problem of CT image artifacts caused by using materials such as metal.

[0032] like Figure 4 As shown, when this design is installed on the left side of the CT pillow 17, the fixing plate 4 is preferably installed on the connecting plate 14 in a tilted state with the left side lower and the right side higher. When the patient's head is lying on the CT pillow 17 during a CT examination, the patient needs to raise their arm. During the raising process, the patient's arm is usually bent. Therefore, the tilted design of the base plate 1 can drive the strap 9 and the limiting plate 10 to tilt. When the strap 9 and the limiting plate 10 are tilted, the lower wall of the patient's hand 18 can be raised and placed more smoothly in the limiting plate 10, and then fixed by the strap 9. This increases the comfort of the hand 18 during placement.

[0033] In practical use: When a patient has claustrophobia or fear of CT mechanical noise and radiation, which can cause involuntary hand tremors, first prepare two sets of this design, left and right. Secure the left connecting plate 14 to the left side of the CT pillow 17 and the right connecting plate 14 to the right side of the CT pillow 17. Then, tighten the fastening screws 13 to secure them. This allows the base plate 1 of this design to be installed on the CT beds 16 on both sides of the CT pillow 17. The patient then lies on the CT bed 16 with their head on the CT pillow 17, and raises their hands overhead with their forearms placed within the limiting plate 10. The hands 18 are then secured to the limiting plate 10 using straps 9, thus fixing the hands 18. During the examination, this hand-fixing design solves the problem of involuntary hand tremors that cause motion artifacts and reduce CT image quality.

Claims

1. A CT room patient hand immobilizer comprising a horizontally disposed base plate (1) characterized in that: A connecting component for connecting to a CT pillow (17) is provided on one side of the base plate (1); a fixing plate (4) is provided on the top of the base plate (1), and a limiting plate (10) made of soft material is provided on the top of the fixing plate (4); a fixing component for detachably fixing the limiting plate (10) is provided on the top of the fixing plate (4); a strap (9) for fixing the patient's hand is provided on the limiting plate (10).

2. The CT room patient hand immobilizer of claim 1, wherein: The connecting assembly includes a connecting plate (14), the bottom of the connecting plate (14) is provided with a groove, the left side wall of the connecting plate (14) is provided with a threaded hole communicating with the inside of the groove, and a fastening screw (13) that is threadedly engaged with it is installed in the threaded hole.

3. The CT room patient hand immobilizer of claim 2, wherein: A pad (15) is adhered to one side wall of the connecting plate (14).

4. The CT room patient hand immobilizer of claim 1, wherein: The fixing component includes a clamping block (11), and the top of the fixing plate (4) is provided with a slot for the limiting plate (10) to be inserted. The clamping block (11) is located in the slot. The right side wall of the fixing plate (4) is provided with a threaded hole that communicates with the inside of the slot. A screw (2) that is threadedly fitted into the threaded hole is inserted into the threaded hole. One end of the screw (2) is rotatably connected to the clamping block (11), and the other end is located on the outside of the fixing plate (4).

5. The CT room patient hand immobilizer of claim 4, wherein: The front side wall of the fixing plate (4) is connected to the slot, and a limit rod (3) is horizontally provided on the lower left side of the clamping block (11). One end of the limit rod (3) is fixed on the rear wall of the slot.

6. The CT room patient hand immobilizer of claim 1, wherein: One end of the strap (9) is fixed to the left side of the limiting plate (10), and the other end of the strap (9) is provided with a hook and loop fastener (8). The right side of the limiting plate (10) is provided with a hook and loop fastener hook (12) that is attached to the hook and loop fastener (8).

7. The CT room patient hand immobilizer of claim 1, wherein: The top of the base plate (1) is provided with a sliding groove for the left and right sliding of the fixing plate (4), and the bottom of the fixing plate (4) is in left and right sliding cooperation with the sliding groove; a fixing block (5) is fixed on the left side wall of the fixing plate (4), and a threaded hole with vertical connection is provided on the fixing block (5), and a screw (6) with threaded cooperation is installed in the threaded hole; a number of threaded blind holes (7) for screw (6) connection are provided on the top of the base plate (1), and the number of threaded blind holes (7) are arranged at equal intervals from left to right.

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