Head fixing device for dynamic acquisition of PET / CT (positron emission tomography / computed tomography) patient

Abstract

The utility model discloses a head fixing device for PET / CT patient dynamic collection, and particularly relates to the technical field of medical instruments, the head fixing device comprises a bed body, one end of the bed body is rotatably provided with a first screw rod, one end of the first screw rod penetrates through the bed body, two ends of the first screw rod are respectively provided with a right-hand thread and a left-hand thread, and the right-hand thread is provided with a right-hand thread and a left-hand thread. Two symmetrically-distributed first sliding blocks are arranged on the outer surface of the first threaded rod in a threaded and penetrating mode, fixing blocks are arranged on the upper portions of the two first sliding blocks, and limiting blocks are fixedly installed in the middles of the opposite sides of the two fixing blocks. The two first sliding blocks are driven to move relatively by rotating the first screw rod, so that the limiting blocks are driven to move relatively, the head of the patient is clamped and fixed, the patient with the dyskinesia disease of which the head movement cannot be controlled autonomously is helped to complete examination, and a solid foundation is laid for accurate formulation of diagnosis and operation schemes of the patient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a head fixing device used for dynamic acquisition of PET / CT patients. Background Art

[0002] When PET\CT is performed on patients, it is necessary to examine the patient's specific position. Conventional CT examinations require patients to lie in a supine position. The CT machine uses the supine image as a reference to mark the left and right sides of the image. Usually, the patient lies in a supine position on the bed, and the head is adjusted and pushed under the scanning frame for examination. However, some patients' heads tend to shake during the scan, causing "artifacts" to appear in the CT images, affecting the accuracy of the examination.

[0003] The existing head fixation device cannot fix the head in all directions and still requires the patient's subjective cooperation to keep the head fixed. In addition, the fixed device is easy to disassemble and replace. Therefore, we propose a head fixation device for dynamic acquisition of PET / CT patients to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a head fixing device for dynamic acquisition of PET / CT patients, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a head fixing device for dynamic acquisition of PET / CT patients, comprising a bed body, a first screw rod being rotatably installed at one end of the bed body, one end of the first screw rod passing through the bed body, two ends of the first screw rod being respectively provided with positive and negative threads, the outer surface of the first screw rod being threaded through with two symmetrically distributed first sliding blocks, the upper parts of the two first sliding blocks are each provided with a fixing block, the middle parts of the opposite sides of the two fixing blocks are each fixedly installed with a limiting block, the upper parts of one side of the two limiting blocks are each rotatably installed with a second screw rod, the outer surfaces of the two second screw rods are threaded through with a second sliding block, and the opposite sides of the two second sliding blocks are both detachably provided with limiting plates.

[0006] Preferably, symmetrically distributed first limit grooves are provided on both sides of the upper part of the two first sliding blocks, the middle parts of the four first limit grooves are rotatably installed with limit shafts, the middle parts of the four limit shafts are rotatably installed with bolts, the upper parts of the four bolts are threaded with nuts, and the lower surfaces of the four nuts are in contact with the top of the fixed block.

[0007] Preferably, a first slide groove is opened on the upper part of one side of the bed body, the lower parts of the two first sliding blocks are slidably clamped inside the first slide groove, a second slide groove is opened on the upper part of one side of the two limit blocks, one side of the two second sliding blocks is slidably clamped inside the second slide groove, symmetrically distributed second limit grooves are opened on both sides of the two fixed blocks, and the four bolts are slidably clamped in the middle of the second limit grooves.

[0008] Preferably, the opposite sides of the two limit blocks are detachably provided with a second sponge pad, the bottom ends of the two limit plates are installed with a first sponge pad, a sponge pillow is installed at the top of one side of the bed body, and a handle is fixedly installed at one end of the first screw that passes through the bed body.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. By setting the limit block and the limit plate, the first screw is rotated to drive the two first sliders to move relative to each other, thereby driving the limit block to move relative to each other, and then clamping and fixing the patient's head, thereby helping patients with movement disorders who cannot control head movement independently to complete the examination, and laying a solid foundation for the patient's diagnosis and accurate formulation of surgical plans;

[0011] 2. By setting the bolts and nuts, the nut with four threads installed on the upper part of the bolt can be rotated so that the bottom end of the nut can be away from the top of the fixing block, that is, the second bolt can be rotated to both sides so that the nut leaves the upper part of the fixing block, thereby making it possible to disassemble the head fixing device as a whole, which can be more conducive to the disinfection of the fixing device as a whole and the first sponge pad and the second sponge pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the connection structure between the first sliding block and the fixed block in the utility model.

[0015] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0016] Figure 4It is a schematic diagram of the partial cross-section structure of the utility model.

[0017] In the figure: 1. bed body; 11. first screw rod; 111. handle; 12. first slide groove; 121. first slider; 122. first limiting groove; 123. limiting shaft; 13. sponge pillow; 2. fixing block; 21. bolt; 211. second limiting groove; 22. nut; 23. limiting block; 231. second slide groove; 24. second screw rod; 25. second slider; 26. limiting plate; 261. first sponge pad; 27. second sponge pad. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example: Figure 1-4 As shown, the utility model provides a head fixing device for dynamic acquisition of PET / CT patients, including a bed body 1, a first screw rod 11 is rotatably installed at one end of the bed body 1, one end of the first screw rod 11 passes through the bed body 1, two ends of the first screw rod 11 are respectively provided with positive and negative threads, the outer surface of the first screw rod 11 is threadedly penetrated with two symmetrically distributed first sliders 121, the upper parts of the two first sliders 121 are each provided with a fixing block 2, the middle parts of the opposite sides of the two fixing blocks 2 are both fixedly installed with a limiting block 23, the upper parts of one side of the two limiting blocks 23 are both rotatably installed with a second screw rod 24, the outer surfaces of the two second screw rods 24 are threadedly penetrated with a second slider 25, and the opposite sides of the two second sliders 25 are both detachably provided with a limiting plate 26.

[0020] Both sides of the upper part of the two first sliding blocks 121 are provided with symmetrically distributed first limiting grooves 122, the middle parts of the four first limiting grooves 122 are rotatably installed with limiting shafts 123, the middle parts of the four limiting shafts 123 are rotatably installed with bolts 21, the upper parts of the four bolts 21 are threadedly installed with nuts 22, and the lower surfaces of the four nuts 22 are in contact with the top of the fixed block 2.

[0021] A first slide groove 12 is provided at an upper portion of one side of the bed body 1 , and lower portions of two first sliding blocks 121 are slidably clamped inside the first slide groove 12 .

[0022] A second sliding groove 231 is formed on the upper portion of one side of the two limit blocks 23 , and one side of the two second sliding blocks 25 is slidably clamped inside the second sliding groove 231 .

[0023] A symmetrically distributed second limiting groove 211 is provided on both sides of the two fixing blocks 2, and the four bolts 21 are slidably clamped in the middle of the second limiting groove 211. By setting the second limiting groove 211, the bolt 21 can enter the middle of the second limiting groove 211 by rotating upward, and the nut 22 is rotated downward to make it contact with the top of the fixing block 2, thereby limiting and fixing the fixing block 2.

[0024] The opposite sides of the two limit blocks 23 are detachably provided with second sponge pads 27. By providing the second sponge pads 27, the patient's head is more comfortable when fixed, and the second sponge pads 27 are fixed to the limit blocks 23 by Velcro, which is convenient for disassembly, disinfection and cleaning.

[0025] The bottom ends of the two limiting plates 26 are both installed with first sponge pads 261. By setting the first sponge pads 261, it is more comfortable to fix the patient's forehead, and the first sponge pads 261 are fixed to the limiting plates 26 by Velcro, which is convenient for disassembly, disinfection and cleaning.

[0026] A sponge pillow 13 is installed on the top of one side of the bed body 1 , and a handle 111 is fixedly installed on one end of the first screw rod 11 that passes through the bed body 1 .

[0027] Working principle: When in actual use, first let the patient lie on the bed 1, with the head placed in the middle of the sponge pillow 13, and by turning the handle 111, the first screw 11 is driven to rotate. Since the surface is provided with positive and negative threads, the two first sliders 121 threadedly mounted on the first screw 11 are made to move relative to each other, thereby driving the fixing block 2 to move, so that the limiting block 23 is moved, that is, the two second sponge pads 27 are brought close to the patient's face to clamp and fix the patient's head, and by turning the two second screws 24, the second slider 25 is driven to move downward, thereby driving the limiting plate 26 to move downward, and then the patient's forehead is fixed through the first sponge pad 261;

[0028] After the inspection is completed, the nut 22 with four threads installed on the upper part of the bolt 21 can be rotated so that the bottom end of the nut 22 is away from the top of the fixing block 2, that is, the second bolt 21 can be rotated to both sides so that the nut 22 leaves the upper part of the fixing block 2, and the head fixing device can be disassembled as a whole.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A head fixing device for dynamic acquisition of PET / CT patients, comprising a bed (1), characterized in that: A first screw rod (11) is rotatably mounted on one end of the bed body (1), one end of the first screw rod (11) passes through the bed body (1), and both ends of the first screw rod (11) are respectively provided with positive and negative threads, and the outer surface of the first screw rod (11) is threadedly penetrated with two symmetrically distributed first sliding blocks (121), and the upper parts of the two first sliding blocks (121) are each provided with a fixing block (2), and the middle parts of the opposite sides of the two fixing blocks (2) are each fixedly mounted with a limiting block (23), and the upper parts of one side of the two limiting blocks (23) are each rotatably mounted with a second screw rod (24), and the outer surfaces of the two second screw rods (24) are each threadedly penetrated with a second sliding block (25), and the opposite sides of the two second sliding blocks (25) are both detachably provided with a limiting plate (26).

2. A head fixation device for dynamic acquisition of PET / CT patients according to claim 1, characterized in that: Both sides of the upper parts of the two first sliding blocks (121) are provided with symmetrically distributed first limiting grooves (122); the middle parts of the four first limiting grooves (122) are rotatably mounted with limiting shafts (123); the middle parts of the four limiting shafts (123) are rotatably mounted with bolts (21); the upper parts of the four bolts (21) are threadedly mounted with nuts (22); and the lower surfaces of the four nuts (22) are in contact with the top of the fixing block (2).

3. A head fixation device for dynamic acquisition of PET / CT patients according to claim 1, characterized in that: A first slide groove (12) is provided on the upper part of one side of the bed body (1), and the lower parts of the two first sliding blocks (121) are slidably clamped inside the first slide groove (12).

4. The head fixing device for dynamic acquisition of PET / CT patients according to claim 1, characterized in that: A second sliding groove (231) is provided on the upper part of one side of the two limit blocks (23), and one side of the two second sliding blocks (25) is slidably clamped inside the second sliding groove (231).

5. The head fixing device for dynamic acquisition of PET / CT patients according to claim 2, characterized in that: Symmetrically distributed second limiting grooves (211) are provided on both sides of the two fixing blocks (2), and the four bolts (21) are slidably clamped in the middle of the second limiting grooves (211).

6. The head fixation device for dynamic acquisition of PET / CT patients according to claim 1, characterized in that: The opposite sides of the two limit blocks (23) are both detachably provided with second sponge pads (27).

7. The head fixing device for dynamic acquisition of PET / CT patients according to claim 1, characterized in that: The bottom ends of the two limiting plates (26) are both equipped with first sponge pads (261).

8. The head fixing device for dynamic acquisition of PET / CT patients according to claim 1, characterized in that: A sponge pillow (13) is installed at the top end of one side of the bed body (1), and a handle (111) is fixedly installed at one end of the first screw rod (11) that passes through the bed body (1).

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