Human body flat-lying fixing device for PET-CT examination in nuclear medicine department
By designing an adjustable bed and binding components, the problem of poor flexibility in existing PET-CT examination devices has been solved, achieving stable clamping of the patient's head and body, and improving the accuracy and comfort of the examination.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI CANCER HOSPITAL
- Filing Date
- 2025-01-09
- Publication Date
- 2026-05-15
AI Technical Summary
Existing PET-CT fixation devices lack flexibility and cannot be effectively adjusted according to individual patient differences, affecting fixation effectiveness and the accuracy of examination results.
A fixation device was designed, comprising a hospital bed, a connecting plate, a headrest, a clamping assembly, and a binding assembly. The device achieves stable head clamping by driving the positioning plate and positioning rod with a screw, and is combined with an adjustable strap system to adapt to the needs of patients of different body types.
This ensures the stability of the patient's head and body, avoids artifacts caused by movement, improves the quality of examination images, and reduces patient discomfort.
Smart Images
Figure CN224235422U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of modern medicine, and in particular to a device for fixing a human body in a supine position during PET-CT examination in nuclear medicine. Background Technology
[0002] In the field of modern medicine, PET-CT is an important diagnostic tool that combines the advantages of positron emission tomography (PET) and computed tomography (CT). It can provide high-resolution and high-sensitivity imaging information for clinical diagnosis, helping to detect and accurately locate lesions at an early stage. It is of key significance for the diagnosis, staging and efficacy evaluation of various diseases.
[0003] However, PET-CT scans require a high degree of stability in the patient's position. During the examination, the patient must remain lying flat and keep all parts of the body as still as possible. Otherwise, artifacts and blurry images may appear, seriously affecting the accuracy of the diagnostic results. For example, when the patient's head moves, it may cause deviations in the brain image, affecting the judgment of neurological diseases. Movement of other parts of the body may also interfere with the observation of organ structure and function, and may even lead to misdiagnosis or missed diagnosis by doctors.
[0004] Currently, many traditional fixation devices in clinical practice have numerous problems. Traditional fixation devices have relatively fixed positions, lack flexibility, and cannot be effectively adjusted according to individual patient differences (such as body type, height, head shape, etc.), resulting in poor applicability and thus affecting the fixation effect.
[0005] To address this issue, a supine fixation device for PET-CT examinations in nuclear medicine is proposed. Utility Model Content
[0006] To overcome the above shortcomings, this utility model provides a supine fixation device for PET-CT examinations in nuclear medicine, aiming to improve the problems of poor flexibility and low applicability of existing fixation devices that affect the fixation effect.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: a supine fixation device for PET-CT examination in nuclear medicine, comprising a hospital bed, a connecting plate fixedly connected to the upper surface of the hospital bed, a headrest fixedly connected to the right end of the upper surface of the hospital bed, a clamping assembly provided on the upper surface of the hospital bed, a binding assembly provided on the upper surface of the hospital bed, the clamping assembly including a positioning plate, a screw rod rotatably connected through and to the right surface of the hospital bed, an inclined groove formed on the upper surface of the positioning plate, a sliding groove formed on the upper surface of the hospital bed, a positioning rod slidably connected to the inner wall of the inclined groove, a clamping plate fixedly connected to the upper surface of the positioning rod, and a sponge pad fixedly connected to the front surface of the clamping plate.
[0008] As a further description of the above technical solution:
[0009] The binding component includes a slider that is slidably connected to the outer wall of the connecting plate. One end of a strap is fixedly connected to the upper surface of the slider, and a buckle is fixedly connected to the other end of the strap. A pull rod is elastically connected to the inner wall of the slider through a compression spring. A slot is provided on the front surface of the connecting plate.
[0010] As a further description of the above technical solution:
[0011] The positioning plate is slidably connected to the inner wall of the hospital bed, and the screw passes through and is threadedly connected to the right surface of the positioning plate.
[0012] As a further description of the above technical solution:
[0013] The positioning rod slides on the inner wall of the groove, and the outer wall of the positioning rod is in contact with the inner wall of the groove.
[0014] As a further description of the above technical solution:
[0015] The diameter of the upper half of the positioning rod is smaller than the diameter of the lower half, and the positioning rod passes through and is slidably connected to the upper surface of the headrest.
[0016] As a further description of the above technical solution:
[0017] The pull rod passes through and is slidably connected to the rear surface of the slider, and the front end of the pull rod is configured as a pull ring.
[0018] As a further description of the above technical solution:
[0019] One end of the compression spring is fixedly connected to the rear surface of the pull rod, and the other end of the compression spring is fixedly connected to the inner wall of the rear side of the slider.
[0020] As a further description of the above technical solution:
[0021] The rear end of the pull rod is inserted into the inner wall of the slot.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the screw rotation drives the positioning plate to move, causing the inclined groove to squeeze the positioning rod, thereby achieving stable clamping of the patient's head by the clamping plate. This effectively prevents the patient's head from swinging during the examination, ensuring the accuracy of PET-CT brain imaging. Furthermore, the sponge pad provides cushioning during clamping, reducing patient discomfort.
[0024] 2. In this utility model, the slider in the binding component can move flexibly along the outer wall of the connecting plate, and the position of the binding strap can be adjusted according to the patient's height. It can effectively fix the patient's chest and legs, adapt to the needs of patients of different body types, ensure body stability, reduce the risk of artifacts caused by body movement, and improve the quality of examination images. Attached Figure Description
[0025] Figure 1 This is a front view of the three-dimensional structure of the overall device in this utility model;
[0026] Figure 2 This is a three-dimensional sectional view of the hospital bed, headrest, and clamping components of this utility model.
[0027] Figure 3 This is a three-dimensional cross-sectional view of the connecting plate and slider in this utility model.
[0028] Legend:
[0029] 1. Hospital bed; 2. Connecting plate; 3. Headrest; 41. Positioning plate; 42. Screw; 43. Positioning rod; 44. Clamping plate; 45. Sponge pad; 401. Inclined groove; 402. Sliding groove; 51. Strap; 52. Sliding block; 53. Pull rod; 54. Compression spring; 55. Buckle; 501. Slot. Detailed Implementation
[0030] 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.
[0031] Reference Figure 1 - Figure 2This utility model provides an embodiment of a supine fixation device for PET-CT examination in nuclear medicine. During the PET-CT examination, metal objects are prohibited. The device includes a bed 1 for supporting the patient. The patient can lie supine on the bed 1 during the PET-CT examination. A connecting plate 2 is fixedly connected to the upper surface of the bed 1. Two sets of connecting plates 2 are symmetrically distributed at the front and rear ends of the upper surface of the bed 1, ensuring no obstruction to the patient. A headrest 3 is fixedly connected to the right end of the upper surface of the bed 1. The left end of the headrest 3 has an inclined angle to better accommodate the height difference of the patient's head and neck. A clamping component is provided on the upper surface of the bed 1 to clamp the patient's head, preventing head movement during the PET-CT examination and affecting the detection results. A binding component is provided on the upper surface of the bed 1 to bind the patient's body, ensuring stability, preventing body movement that could affect the detection results, and reducing safety hazards.
[0032] Reference Figure 1 - Figure 2 The clamping assembly includes a positioning plate 41. A screw 42 is rotatably connected through the right surface of the bed 1. The screw 42 is located at the top of the right surface of the bed 1. An inclined groove 401 is formed on the upper surface of the positioning plate 41, and a sliding groove 402 is formed on the upper surface of the bed 1. Two sets of inclined grooves 401 and sliding grooves 402 are formed and are symmetrically distributed about the center line of the bed 1. A positioning rod 43 is slidably connected to the inner wall of the inclined groove 401. A clamping plate 44 for clamping the patient's head is fixedly connected to the upper surface of the positioning rod 43. A sponge pad 45 is fixedly connected to the front surface of the clamping plate 44 to prevent excessive clamping force from causing discomfort to the patient. Two sets of positioning rods 43, clamping plates 44 and sponge pads 45 are also formed and are symmetrically distributed about the center line of the bed 1.
[0033] Reference Figure 1 , Figure 3 The binding assembly includes a slider 52, which is slidably connected to the outer wall of the connecting plate 2. The slider 52 is approximately U-shaped with its opening facing downwards. The slider 52 moves left and right along the outer wall of the connecting plate 2. One end of a strap 51 is fixedly connected to the upper surface of the slider 52. The strap 51 can bind the patient's body. The strap 51 has strong flexibility. The other end of the strap 51 is fixedly connected to a buckle 55. The binding assembly has two sets, which are respectively installed on the front and rear connecting plates 2. The buckle 55 is divided into two parts, which can be locked together. The front and rear straps 51 can be fixed by the buckles 55. The inner wall of the slider 52 is elastically connected to a pull rod 53 by a compression spring 54. The front surface of the connecting plate 2 has a slot 501, which fits into the pull rod 53.
[0034] Reference Figure 1 - Figure 2The positioning plate 41 is slidably connected to the inner wall of the bed 1 and moves laterally. When the positioning plate 41 moves, it will drive the inclined groove 401 to move, which will then squeeze the positioning rod 43. The screw 42 passes through and is threadedly connected to the right surface of the positioning plate 41. When the screw 42 rotates, it will drive the positioning plate 41 to move laterally. The positioning rod 43 slides on the inner wall of the sliding groove 402. The outer wall of the positioning rod 43 is in contact with the inner wall of the sliding groove 402. The positioning rod 43 will move along the trajectory of the sliding groove 402. The sliding groove 402 is oriented front and back. When the inclined groove 401 squeezes the positioning rod 43, it will drive the positioning rod 43 to move in the front and back direction. The two sets of positioning rods 43 will open or close synchronously. The diameter of the upper half of the positioning rod 43 is smaller than the diameter of the lower half. The positioning rod 43 passes through and is slidably connected to the upper surface of the headrest 3.
[0035] Reference Figure 1 , Figure 3 The pull rod 53 passes through and is slidably connected to the rear surface of the slider 52. The front end of the pull rod 53 is set in the shape of a pull ring for easy pulling. One end of the compression spring 54 is fixedly connected to the rear surface of the pull rod 53, and the other end of the compression spring 54 is fixedly connected to the inner wall of the rear side of the slider 52. When the pull rod 53 moves forward, it will pull the compression spring 54 to generate a reaction force. The rear end of the pull rod 53 is inserted into the inner wall of the slot 501, which can limit the slider 52 and the strap 51.
[0036] Working principle: The patient lies flat on the bed 1 with his head placed on the headrest 3. At this time, the positioning plate 41 is in the initial position inside the bed 1, the two sets of positioning rods 43 are in a separated state, and the distance between the clamps 44 is large, which makes it convenient for the patient's head to be placed.
[0037] Then, rotating the screw 42 causes the positioning plate 41 to move to the left. The inclined groove 401 on the positioning plate 41 moves to the left accordingly. The inclined groove 401 is slidably connected to the positioning rod 43, and the inclined groove 401 is inclined. The movement of the inclined groove 401 will squeeze the positioning rod 43. Because the outer wall of the positioning rod 43 is in contact with the inner wall of the sliding groove 402 facing forward and backward, the positioning rod 43 will move towards the middle of the hospital bed 1 under the squeezing of the inclined groove 401.
[0038] Then, the two sets of positioning rods 43 will move towards the center line of the bed 1 simultaneously, driving the clamp 44 to move synchronously to clamp the patient's head. The sponge pad 45 plays a buffering role to prevent the patient from feeling uncomfortable due to excessive clamping force, and finally achieves stable clamping of the patient's head, avoiding the head swinging during the PET-CT examination from affecting the test results.
[0039] Then, adjust the position of the strap 51 according to the patient's height. During adjustment, pull the lever 53 forward to compress the spring 54 and generate a reaction force. The forward-moving lever 53 will disengage from the slot 501 and release the limit. Then, move the slider 52 laterally to drive the strap 51 to move synchronously. When adjusted to the appropriate position, release the lever 53. The force of the spring 54 will pull the lever 53 backward to engage with the corresponding slot 501, keeping the slider 52 and strap 51 stable. Then, use the buckle 55 to connect the straps 51 at both ends. At this time, the patient's chest and legs will be pressed down to ensure the patient's stability and avoid the body movement during the examination, which may affect the test results. At the same time, it reduces the safety hazards that may be caused by the patient's movement. Then, the test can be started. After the test is completed, unlock the buckle 55 and then rotate the screw 42 in the opposite direction to drive the positioning plate 41 to move in the opposite direction, thereby causing the positioning rod 43, clamp 44 and sponge pad 45 to separate, releasing the clamp on the patient's head. Then, the patient can get off the bed 1.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A supine fixation device for PET-CT examination in nuclear medicine, comprising a hospital bed (1), characterized in that: A connecting plate (2) is fixedly connected to the upper surface of the hospital bed (1). A headrest (3) is fixedly connected to the right end of the upper surface of the hospital bed (1). A clamping assembly is provided on the upper surface of the hospital bed (1). A binding assembly is provided on the upper surface of the hospital bed (1). The clamping assembly includes a positioning plate (41). A screw (42) is rotatably connected through the right surface of the hospital bed (1). An inclined groove (401) is opened on the upper surface of the positioning plate (41). A sliding groove (402) is opened on the upper surface of the hospital bed (1). A positioning rod (43) is slidably connected to the inner wall of the inclined groove (401). A clamping plate (44) is fixedly connected to the upper surface of the positioning rod (43). A sponge pad (45) is fixedly connected to the front surface of the clamping plate (44).
2. The human body supine fixation device for PET-CT examination in nuclear medicine as described in claim 1, characterized in that: The binding component includes a slider (52), which is slidably connected to the outer wall of the connecting plate (2). One end of a strap (51) is fixedly connected to the upper surface of the slider (52), and the other end of the strap (51) is fixedly connected to a buckle (55). A pull rod (53) is elastically connected to the inner wall of the slider (52) through a compression spring (54). A slot (501) is provided on the front surface of the connecting plate (2).
3. The human body supine fixation device for PET-CT examination in nuclear medicine as described in claim 1, characterized in that: The positioning plate (41) is slidably connected to the inner wall of the bed (1), and the screw (42) passes through and is threadedly connected to the right surface of the positioning plate (41).
4. The human body supine fixation device for PET-CT examination in nuclear medicine as described in claim 1, characterized in that: The positioning rod (43) slides on the inner wall of the groove (402), and the outer wall of the positioning rod (43) is in contact with the inner wall of the groove (402).
5. The human body supine fixation device for PET-CT examination in nuclear medicine as described in claim 1, characterized in that: The diameter of the upper half of the positioning rod (43) is smaller than the diameter of the lower half, and the positioning rod (43) passes through and is slidably connected to the upper surface of the headrest (3).
6. The human body supine fixation device for PET-CT examination in nuclear medicine as described in claim 2, characterized in that: The pull rod (53) passes through and is slidably connected to the rear surface of the slider (52), and the front end of the pull rod (53) is configured as a pull ring.
7. A supine fixation device for PET-CT examination in nuclear medicine as described in claim 2, characterized in that: One end of the compression spring (54) is fixedly connected to the rear surface of the pull rod (53), and the other end of the compression spring (54) is fixedly connected to the inner wall of the rear side of the slider (52).
8. A supine fixation device for PET-CT examination in nuclear medicine as described in claim 2, characterized in that: The rear end of the pull rod (53) is inserted into the inner wall of the slot (501).