A fixing device for nuclear medicine scanning of a patient's head

Abstract

The application relates to the field of nuclear medical detection, and discloses a fixing device for scanning the head of a patient in nuclear medicine, which comprises a bed body, a head fixing device capable of being self-adaptively adjusted according to the size of the head is arranged on the bed body, a locking device for locking the head fixing device is arranged on the lower side of the bed body, when the head of the patient is placed on the head placing fixing device, the head placing device is adjusted according to the head of the patient, then the locking device is started to lock the head fixing device, through the cooperation of the head placing device and the fixing device, the distance between the two arc-shaped clamping plates can be self-adaptively adjusted according to the size of the head of the patient, then the two arc-shaped clamping plates are completely fixed through the fixing device, so that the head of the patient can be well fixed, and the subsequent nuclear medical examination can be carried out.

Description

Technical Field

[0001] This invention relates to the field of nuclear medicine scanning, and more specifically to a fixation device for the head of a patient undergoing nuclear medicine scanning. Background Technology

[0002] Nuclear medicine is an emerging discipline that uses nuclear technology to diagnose, treat, and study diseases. It is a product of the integration of modern science and technology, such as nuclear technology, electronic technology, computer technology, chemistry, physics, and biology, with medicine. Nuclear medicine examinations are lengthy, and most nuclear medicine examinations generally have long image acquisition times. During image acquisition, the patient's head inevitably moves for various reasons, producing motion artifacts that affect image quality. Guidelines require that when the patient is supine, their head should be placed in a headrest, with the midpoint between the eyebrows and the canthus line kept horizontal, and a headband used to fix it to prevent rotation or tilting. Therefore, nuclear medicine nursing staff need to assist and guide patients in positioning their heads. However, the headrests currently in use cannot quickly and stably adjust the size of the head cavity, making it inconvenient to fix the heads of patients of different sizes. Summary of the Invention

[0003] The purpose of this invention is to provide a fixation device for a patient's head during nuclear medicine scanning, thereby solving the above-mentioned technical problems.

[0004] The objective of this invention can be achieved through the following technical solutions: A fixation device for a patient's head during nuclear medicine scanning includes a bed. The bed is equipped with a head fixation device that can adaptively adjust according to the size of the head. A locking device is provided on the lower side of the bed for locking the head fixation device. When the patient's head is placed on the head fixation device, the head fixation device will adjust according to the patient's head, and then the locking device will be activated to lock the head fixation device.

[0005] The head fixing device includes a drive assembly, two execution assemblies respectively disposed on both sides of the drive assembly, and a transmission assembly connecting the drive assembly and the execution assemblies.

[0006] The drive assembly includes a head placement hole placed in the bed, a reciprocating head pressure block is provided in the head placement hole, and a plurality of first springs are fixedly provided between the head pressure block and the side wall of the head placement hole.

[0007] The execution component includes sliding grooves respectively disposed on both sides of the head placement hole. A reciprocating slider is disposed in the sliding groove. A reciprocating fixed block is disposed at the upper end of the slider. An arc-shaped clamp is fixedly disposed on the fixed block.

[0008] The transmission assembly includes inclined blocks fixedly disposed on both sides of the bottom of the head pressure block. Each movable slot has a through slot at its bottom. The lower end of the slider is fixedly disposed with a linkage block that can reciprocate within the through slot. The linkage block has a first inclined surface that cooperates with the inclined block.

[0009] The locking device includes locking components respectively disposed on each sliding groove; the locking components include grooves respectively disposed on the side walls of the sliding grooves, each groove being provided with a reciprocating abutment block, the abutment block being used to abut against the fixed block, each abutment block having a second inclined surface; the locking device also includes a working cylinder disposed under the bed, the piston rod of the working cylinder being provided with four abutment rods, each abutment rod having a third inclined surface that cooperates with the second inclined surface.

[0010] Each arc-shaped clamp is provided with an ear placement slot, and each ear placement slot is provided with an ear adjustment device to prevent the ear from being squeezed. The ear adjustment device includes a rotating shaft rotatably disposed on the lower side of the ear placement slot. Multiple arc-shaped sponge blocks are evenly distributed along the circumference of the rotating shaft. One end of the rotating shaft is rotatably connected to the side wall of the ear placement slot, and the other end rotatably passes through the outer peripheral wall of the arc-shaped clamp and is fixedly provided with a rotating wheel. A cover is provided on one side of each arc-shaped clamp. A rope is wound around the rotating wheel, and the other end of the rope is fixedly connected to the cover. A torsion spring is sleeved on the rotating shaft to return the rotating wheel to its original position.

[0011] The slider is provided with a trapezoidal groove, and the fixed block is fixedly provided with a trapezoidal block that can reciprocate within the trapezoidal groove. A return spring is fixedly provided between the trapezoidal block and the side wall of the trapezoidal groove.

[0012] A headband is fixedly mounted on one of the curved clamps, and the other end of the headband can be fixed to another curved clamp via Velcro.

[0013] A working spring is fixedly installed between the abutment block and the side wall of the groove.

[0014] The beneficial effects of this invention are: By combining the head placement device and the fixation device, the distance between the two arc-shaped splints can be adaptively adjusted according to the size of the patient's head. Then, the two arc-shaped splints are completely fixed by the fixation device, which can effectively fix the patient's head so that subsequent nuclear medicine examinations can be carried out.

[0015] By setting up the abutment block and the fixing block, the abutment block can hold the two sides of the two fixing blocks together. Under the action of the friction between the fixing block and the abutment block, the fixing blocks and the arc-shaped clamp are fixed, thereby effectively fixing the patient's head. Moreover, if the driving component (such as the working cylinder in this application) malfunctions and does not stop in time after moving to the designated position, it will only continue to squeeze the fixing block, causing the fixing block to deform. Because squeezing the front and back sides of the fixing block will not cause the fixing block to move left and right (the aforementioned left and right movement refers to movement along the width direction of the bed), even if the driving component malfunctions, the arc-shaped clamp will not continue to squeeze the patient's head, thus making the device safer.

[0016] The rotating wheel and curved sponge block in the ear positioning device allow the rotating wheel to drive the rotating shaft and the curved sponge block to rotate. The rotating curved sponge block can then lift the ear upwards, ensuring that the ear is close to the middle area of ​​the ear placement slot. This prevents ear injuries to children or the elderly, whose ears are more fragile, from being squeezed and bent at the edge of the ear placement slot when the curved sponge is close to the sides of the head. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 for Figure 1 Enlarged view of point Z in the image; Figure 3 This is a top view of the present invention; Figure 4 for Figure 3 Sectional view at point AA; Figure 5 for Figure 4 Enlarged view of point B in the image; Figure 6 for Figure 3 Sectional view at point C; Figure 7 for Figure 6 Enlarged view of point D in the image; Figure 8 for Figure 3 Sectional view at EE in the middle; Figure 9 for Figure 8 Enlarged view of point F in the image; Figure 10 This is a schematic diagram of the three-dimensional structure of the abutment.

[0019] Figure Descriptions: Bed 1, Headrest Hole 20, Head Pressing Block 21, First Spring 22, Sliding Groove 30, Slider 31, Fixing Block 200, Inclined Block 23, Through Groove 33, Linkage Block 34, First Inclined Surface 35, Support Spring 800, Groove 40, Abutment Block 41, Second Inclined Surface 400, Working Cylinder 42, Abutment Rod 43, Mounting Plate 110, Third Inclined Surface 44, Ear Placement Groove 50, Rotating Shaft 51, Arc-shaped Sponge Block 52, Rotating Wheel 53, Cover 54, Rope Winding 55, Trapezoidal Groove 201, Trapezoidal Block 202, Return Spring 203, Headband 300, Adhesive Area 700, Working Spring 301, Neck Support 500, Rubber Ring 600. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-10 As shown, the present invention is a fixation device for the head of a patient in nuclear medicine scanning, including a bed 1. The bed 1 is provided with a head fixation device that can adaptively adjust according to the size of the head. The lower side of the bed 1 is provided with a locking device for locking the head fixation device. When the patient's head is placed on the head fixation device, the head fixation device will adjust according to the patient's head, and then the locking device will be activated to lock the head fixation device.

[0022] The head fixing device includes a drive assembly, two execution assemblies respectively disposed on both sides of the drive assembly, and a transmission assembly connecting the drive assembly and the execution assemblies.

[0023] The drive assembly includes a head placement hole 20 placed in the bed 1. A reciprocating head pressure block 21 is provided in the head placement hole 20. A plurality of first springs 22 are fixedly arranged between the head pressure block 21 and the side wall of the head placement hole 20.

[0024] The execution component includes sliding grooves 30 respectively disposed on both sides of the head placement hole 20. A reciprocating slider 31 is disposed in the sliding groove. A reciprocating fixing block 200 is disposed at the upper end of the slider 31. An arc-shaped clamping plate 32 is fixedly disposed on the fixing block 200.

[0025] The transmission assembly includes inclined blocks 23 fixedly disposed on both sides of the bottom of the head pressure block 21. Each movable groove 30 has a through groove 33 at its bottom. The lower end of the slider 31 is fixedly disposed with a linkage block 34 that can reciprocate within the through groove 33. The linkage block 34 is provided with a first inclined surface 35 that cooperates with the inclined block 23. A support spring 800 is fixedly disposed between the linkage block 34 and the side wall of the movable groove 30.

[0026] The locking device includes locking components respectively disposed on each sliding groove 30; the locking components include grooves 40 respectively disposed on the side walls of both sides of the sliding groove 30, each groove 40 is provided with a reciprocating abutment 41, the abutment 41 is used to abut against the fixing block 200, and each abutment 41 has a second inclined surface 400; the locking device also includes a working cylinder 42 disposed below the bed body 1, the piston rod of the working cylinder 42 is provided with four abutment rods 43, a mounting plate 110 is fixedly disposed on the piston rod of the working cylinder 42, the abutment rods 43 are fixedly mounted on the mounting plate 110, and each abutment rod 43 has a third inclined surface 44 that cooperates with the second inclined surface 400.

[0027] When the working cylinder 42 is activated, it drives the four abutment rods 43 to move upward. The upward movement of the abutment rods 43 will abut against the abutment block 41 and move towards the side of the fixing block 200. Thus, the abutment block 41 can hold the two sides of the fixing block 200 together. Under the action of the friction between the fixing block 200 and the abutment block 41, the fixing block 200 and the arc-shaped clamp 32 are fixed, thus effectively fixing the patient's head.

[0028] Each arc-shaped clamp 32 is provided with an ear placement groove 50, and each ear placement groove 50 is provided with an ear adjustment device to prevent the ear from being squeezed. The ear adjustment device includes a rotating shaft 51 rotatably disposed on the lower side inside the ear placement groove 50. The rotating shaft 51 has a plurality of arc-shaped sponge blocks 52 evenly distributed along the circumference. One end of the rotating shaft 51 is rotatably connected to the side wall of the ear placement groove 50, and the other end rotatably passes through the outer peripheral wall of the arc-shaped clamp 32 and is fixedly provided with a rotating wheel 53. Each arc-shaped clamp 32 is provided with a cover 54 on one side. A coiled rope 55 is wound on the rotating wheel 53, and the other end of the coiled rope is fixedly connected to the cover 54. A torsion spring for resetting the rotating wheel 53 is sleeved on the rotating shaft 51. One end of the torsion spring is fixedly connected to the rotating shaft 51, and the other end is fixedly connected to the outer peripheral wall of the arc-shaped clamp 32. The curved sponge block 52 is generally made of curved sponge block with a thickness of 1cm-1.2cm. In this embodiment, a curved sponge block with a thickness of 1CM is used. The soft properties of the curved sponge block can avoid causing injury to the head when in contact with the head.

[0029] When the two arc-shaped clamps 32 come together, they move along with the rotating shaft 51 and the rotating wheel 53 towards the head. Since one end of the coiled rope 55 wound around the rotating wheel 53 is fixed to the cover 54, the coiled rope 55 is pulled during the movement, causing the rotating wheel 53 to rotate (i.e., as shown in the image). Figure 6 As shown, the rotating wheel 53 on the left rotates counterclockwise and the rotating wheel 53 on the right rotates clockwise. The rotating wheel 53 drives the rotating shaft 51 and the arc-shaped sponge block 52 to rotate, so that the rotating arc-shaped sponge block 52 can have the effect of pulling the ear upward, ensuring that the ear is close to the middle area of ​​the ear placement slot 50. This avoids ear damage to children or the elderly whose ears are more fragile due to compression and bending at the edge of the ear placement slot 50 when the arc-shaped clip 32 is close to the sides of the head.

[0030] A trapezoidal groove 201 is provided on the slider 31, and a trapezoidal block 202 that can reciprocate within the trapezoidal groove 201 is fixedly provided on the fixing block 200. A return spring 203 is fixedly provided between the trapezoidal block 202 and the side wall of the trapezoidal groove 201.

[0031] A headband 300 is fixedly mounted on one of the curved clamps 32. The other end of the headband 300 can be fixed to the other curved clamp via Velcro. The other curved clamp is provided with an adhesive area 700 for Velcro attachment. After the two curved clamps 32 are fixed in position by the locking device, the other end of the headband 300 is attached to the Velcro adhesive area on the other curved clamp, thereby better confining the head between the two curved clamps 32.

[0032] A working spring 301 is fixedly installed between the abutment 41 and the side wall of the groove 40.

[0033] A neck support 500 is fixedly installed on the bed 1. The neck support 500 is made of latex. The neck support 500 is used to support the patient's neck, and the softness and deformability of the latex material make it suitable for necks of different thicknesses.

[0034] A sponge layer is fixedly provided on one side of each of the two curved clamps 32, which can increase comfort when the two curved clamps 32 are pressed against the cheek.

[0035] A rubber ring 600 for supporting the head is fixedly provided on the upper end face of the head placement hole 20. By adding the rubber ring 600 to the bed 1 to support the lower end of the patient's head, comfort is increased.

[0036] Working principle: When the patient lies supine and places their head between the two arc-shaped splints 32, the head pressing block 21 moves downward as the head leans down. The head pressing block 21, along with the inclined block 23, moves downward. The inclined block 23 moves against the first inclined surface 35, causing the two arc-shaped splints 34 to move closer together. The arc-shaped splints 34, along with the slider 31, the fixing block 200, and the arc-shaped splints 32, move, thus bringing the two arc-shaped splints 32 closer together towards the head. When the arc-shaped splints 32 touch the sides of the head, as the two linkage blocks 34 continue to move closer, the arc-shaped splints 32 are compressed and reset due to the resistance from the sides of the head. Spring 203 moves in the opposite direction, thereby adjusting the position between the two 32 according to the different sizes of the patient's head. This allows for adaptive adjustment based on the different sizes of the patient's head. The working cylinder 42 is activated, driving the four abutment rods 43 to move upward. The upward movement of the abutment rods 43 will abut against the abutment block 41 and move towards the side of the fixing block 200. This allows the abutment block 41 to hold the two sides of the fixing block 200 together. Under the action of the friction between the fixing block 200 and the abutment block 41, the fixing block 200 and the arc-shaped clamp 32 are fixed, thus effectively fixing the patient's head.

[0037] When the two arc-shaped clamps 32 come together, they move along with the rotating shaft 51 and the rotating wheel 53 towards the head. Since one end of the coiled rope 55 wound around the rotating wheel 53 is fixed to the cover 54, the coiled rope 55 is pulled during the movement, causing the rotating wheel 53 to rotate (i.e., as shown in the image). Figure 6 As shown, the rotating wheel 53 on the left rotates counterclockwise and the rotating wheel 53 on the right rotates clockwise. The rotating wheel 53 drives the rotating shaft 51 and the arc-shaped sponge block 52 to rotate, so that the rotating arc-shaped sponge block 52 can have the effect of pulling the ear upward, ensuring that the ear is close to the middle area of ​​the ear placement slot 50. This avoids ear damage to children or the elderly whose ears are more fragile due to compression and bending at the edge of the ear placement slot 50 when the arc-shaped clip 32 is close to the sides of the head.

[0038] After the patient's examination is completed, the working cylinder 42 is activated, causing the abutment rod 43 to move downwards away from the abutment block 41. Then, the abutment block 41 is reset and moves away from the fixing block 200 under the reset action of the working spring 301. As the head moves away from the head pressing block 21, the head pressing block 21 is reset under the action of the first spring 22. The linkage block 34, after being removed from contact with the inclined block 23, is also reset under the action of the support spring 800. The arc-shaped clamp 32 is also reset under the action of the reset spring 203 (e.g., ...). Figure 5 That is, the position state after reset.

[0039] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A fixation device for a patient's head during nuclear medicine scanning, characterized in that, The device includes a bed frame (1), on which a head-fixing device is provided that can adaptively adjust according to the size of the head. A locking device is provided on the lower side of the bed frame (1) for locking the head-fixing device. When the patient's head is placed in the head-fixing device, the head-fixing device will adjust according to the patient's head, and then the locking device will be activated to lock the head-fixing device. The head-fixing device includes a drive assembly, two execution assemblies respectively located on both sides of the drive assembly, and a transmission assembly connecting the drive assembly and the execution assemblies. The drive assembly includes a head placement hole (20) placed in the bed frame (1). The head placement hole (20) is provided with a reciprocating head pressing block (21), and a plurality of first springs (22) are fixedly provided between the head pressing block (21) and the side wall of the head placement hole (20); the actuation component includes sliding grooves (30) respectively provided on both sides of the head placement hole (20), a reciprocating slider (31) is provided in the sliding groove, a reciprocating fixed block (200) is provided at the upper end of the slider (31), and an arc-shaped clamping plate (32) is fixedly provided on the fixed block (200); the transmission component includes inclined blocks respectively fixedly provided on both sides of the bottom of the head pressing block (21). (23) Each movable groove (30) has a through groove (33) at its bottom. The lower end of the slider (31) is fixedly provided with a linkage block (34) that can reciprocate within the through groove (33). The linkage block (34) is provided with a first inclined surface (35) that cooperates with the inclined block (23). The locking device includes locking components respectively provided on each sliding groove (30). The locking components include grooves (40) respectively provided on the side walls of both sides of the sliding groove (30). Each groove (40) is provided with a reciprocating abutment (41). The abutment (41) is used to abut against the fixed block (200). Each abutment... The block (41) has a second inclined surface (400); the locking device also includes a working cylinder (42) disposed below the bed (1), the piston rod of the working cylinder (42) is provided with four abutments (43), each abutment (43) has a third inclined surface (44) that cooperates with the second inclined surface (400); the slider (31) is provided with a trapezoidal groove (201), the fixed block (200) is fixedly provided with a trapezoidal block (202) that can reciprocate within the trapezoidal groove (201), and a return spring (203) is fixedly provided between the trapezoidal block (202) and the side wall of the trapezoidal groove (201).

2. The fixation device for patient head during nuclear medicine scanning according to claim 1, characterized in that, Each arc-shaped clamp (32) is provided with an ear placement groove (50), and each ear placement groove (50) is provided with an ear adjustment device for preventing the ear from being squeezed. The ear adjustment device includes a rotating shaft (51) rotatably disposed on the lower side inside the ear placement groove (50). The rotating shaft (51) has multiple arc-shaped sponge blocks (52) evenly distributed along the circumference. One end of the rotating shaft (51) is rotatably connected to the side wall of the ear placement groove (50), and the other end is rotatably passed through the outer peripheral wall of the arc-shaped clamp (32) and fixedly provided with a rotating wheel (53). Each arc-shaped clamp (32) is provided with a cover (54) on one side. A coiled rope (55) is wound on the rotating wheel (53), and the other end of the coiled rope is fixedly connected to the cover (54). A torsion spring for resetting the rotating wheel (53) is sleeved on the rotating shaft (51).

3. The fixation device for patient head during nuclear medicine scanning according to claim 1, characterized in that, A headband (300) is fixedly installed on one of the arc-shaped clamps (32), and the other end of the headband (300) can be fixed to another arc-shaped clamp by Velcro.

4. The fixation device for a patient's head in nuclear medicine scanning according to claim 3, characterized in that, A working spring (301) is fixedly installed between the abutment (41) and the side wall of the groove (40).

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