CN112998742B - Shielding device for preventing fetus from being irradiated by CT (computed tomography) - Google Patents
Shielding device for preventing fetus from being irradiated by CT (computed tomography) Download PDFInfo
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- CN112998742B CN112998742B CN202110193901.7A CN202110193901A CN112998742B CN 112998742 B CN112998742 B CN 112998742B CN 202110193901 A CN202110193901 A CN 202110193901A CN 112998742 B CN112998742 B CN 112998742B
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- 210000003754 fetus Anatomy 0.000 title claims abstract description 23
- 238000002591 computed tomography Methods 0.000 title description 20
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 41
- 239000004917 carbon fiber Substances 0.000 claims abstract description 41
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000005855 radiation Effects 0.000 claims abstract description 16
- 210000001015 abdomen Anatomy 0.000 claims abstract description 14
- 230000003187 abdominal effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 230000002265 prevention Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 238000009597 pregnancy test Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/10—Safety means specially adapted therefor
- A61B6/107—Protection against radiation, e.g. shielding
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Abstract
A shielding device for protecting a fetus from CT radiation, comprising: the cover body is arranged on the surface of the carbon fiber plate and is characterized in that the cover body is detachably connected with the carbon fiber plate; the cover body horizontally slides along the surface of the carbon fiber plate; the cover body is divided into a vertical section with adjustable height and a horizontal section with adjustable width; two side ends of the horizontal section are respectively provided with a baffle plate hinged with the side end of the horizontal section, and an angle adjusting mechanism for instantly fixing the hinged angle is arranged between the baffle plate and the horizontal section; the radian of the periphery of the shielding plate is similar to the radian of the raised abdomen of the pregnant woman; before use, a pregnant woman lies on a carbon fiber plate for CT examination, and a cover body is further installed; when in use, the height and the width of the cover body are adjusted to ensure that the cover body conforms to the heights and the widths of abdominal bulges of different pregnant women; the angle of the baffle plate is adjusted to ensure that the cover body shields the periphery of the raised abdomen of the pregnant woman.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a shielding device for preventing a fetus from being subjected to CT radiation.
Background
As a hospital is the most important medical place during epidemic situations, each patient admitted to the hospital needs to be subjected to epidemic prevention examination, and CT image detection in the epidemic prevention examination can be used as an important basis for screening, clinical diagnosis and curative effect monitoring of nucleic acid negative suspected patients; however, pregnant women who have no abdomen and can not be CT imaged need to be admitted to the hospital for pregnancy test.
At present, in order to avoid that the abdomen of a pregnant woman receives radiation during examination, the pregnant woman wraps the belly skin with a lead skin before scanning, and the lead skin is heavy, so that a fetus is extruded, a patient feels great discomfort, and medical staff wrap the lead skin of the patient inconveniently, so that the examination time of the patient is prolonged, and the examination efficiency is reduced; some hospitals also adopt radiation-proof clothes, but the actual using effect of the radiation-proof clothes is far inferior to that of the lead plate.
Aiming at the problem that the existing hospitals can not effectively prevent the fetus from being irradiated by CT, the invention provides a shielding device for preventing the fetus from being irradiated by CT.
Disclosure of Invention
In order to solve the problem that the existing hospitals can not effectively prevent the fetus from being irradiated by CT, the invention provides a shielding device for preventing the fetus from being irradiated by CT.
A shielding device for protecting a fetus from CT radiation, comprising: the cover body is arranged on the surface of the carbon fiber plate and is characterized in that the cover body is detachably connected with the carbon fiber plate; the cover body horizontally slides along the surface of the carbon fiber plate; the cover body is divided into a vertical section with adjustable height and a horizontal section with adjustable width; two side ends of the horizontal section are respectively provided with a baffle plate hinged with the side end of the horizontal section, and an angle adjusting mechanism for instantly fixing the hinged angle is arranged between the baffle plate and the horizontal section; the radian of the periphery of the shielding plate is similar to the radian of the raised abdomen of the pregnant woman; before use, a pregnant woman lies on a carbon fiber plate for CT examination, and a cover body is further installed; when in use, the height and the width of the cover body are adjusted to ensure that the cover body conforms to the heights and the widths of abdominal bulges of different pregnant women; the angle of the baffle plate is adjusted to ensure that the cover body shields the periphery of the raised abdomen of the pregnant woman.
Furthermore, two parallel slide rails are uniformly arranged in the carbon fiber plate along a horizontal direction, and a pulley which slides in the slide rails is arranged in the slide rails; the upper end of the pulley penetrates through the carbon fiber plate; the upper ends of the pulleys in the two slide rails are in threaded connection with the bottom end of the vertical section; before use, the bottom ends of the vertical sections at the two sides of the cover body are in threaded connection with the carbon fiber plate inner pulley; the cover body is adjusted to the abdomen position of the pregnant woman by the sliding of the pulley on the sliding rail.
Furthermore, engaged insections are arranged between the slide rail and the pulley, and the end surfaces at the two sides of the pulley are provided with a frame for the pulley to rotate; the upper end of the frame is in threaded connection with the bottom end of the vertical section; the arrangement can realize the position fixation of the cover body on the surface of the carbon fiber plate.
Furthermore, T-shaped bulges are arranged at the two side ends of the rack, and grooves matched with the T-shaped bulges are arranged at the two side ends of the slide rail; the above arrangement can avoid the pulley from rolling.
Further, a thrust ball bearing is arranged at the lower end of the vertical section, and a threaded rod is arranged at the lower end of the thrust ball bearing; a threaded cylinder body which is in threaded engagement with the threaded rod is arranged at the upper end of the frame; the thrust ball bearing is arranged to avoid the rotation of the cover body caused by the rotation meshing process of the threaded rod and the threaded cylinder.
Further, the vertical section is divided into an upper barrel fixedly connected with the horizontal section and a lower barrel fixedly connected with the thrust ball bearing, and the upper barrel is sleeved in the lower barrel; a thread propelling mechanism is correspondingly arranged between the lower barrel and the upper barrel; the arrangement is to realize height adjustment of the cover body.
Further, the thread pushing mechanism comprises a threaded rod fixedly connected with the bottom of the upper barrel and an internal thread nut driving the threaded rod to axially move along the lower barrel; the internal thread nut rotates around the central axis of the threaded rod in a fixed axis manner, and the inner edge of the internal thread nut is provided with threads meshed with the threaded rod; the arrangement realizes the axial movement of the threaded rod and the upper barrel by meshing transmission; when the upper barrel is used, the inner threaded nut in the lower barrel is rotated, and the upper barrel is pushed to axially move along the lower barrel by utilizing the threaded engagement of the inner threaded nut and the threaded rod.
Further, in order to realize the fixed-axis rotation of the internal thread nut; the outer edge of the internal thread nut is provided with an external thread nut, and a threaded rod meshed with the external thread nut is arranged along the outer edge of the external thread nut; one end of the threaded rod penetrates through the outer wall of the lower barrel; the central axis of the threaded rod is vertical to the central axis of the external thread nut; when the nut is used, the threaded rod is rotated, and the internal thread nut is driven to rotate by meshing rotation.
Further, in order to realize the rotation and the fixation of the internal thread nut; the lower end of the external thread nut is provided with a thrust ball bearing, and the lower end of the thrust ball bearing is fixedly connected with the inner wall of the lower cylinder body.
Furthermore, the horizontal section is provided with two or more plate bodies which are sleeved with each other, and one of the plate bodies slides on the end surface of the other plate body; a shielding plate is arranged at the side end of one plate body; the width adjustment of the horizontal section can be realized by the arrangement.
Furthermore, the two plate bodies are arranged into a first plate body and a second plate body, and the second plate body slides on the end face of the first plate body along a horizontal direction; an angle adjusting mechanism is correspondingly arranged between the lower end face of the second plate body and the upper end face of the shielding plate.
Further, in order to realize the sliding fixation of the second plate body in the first plate body; two side ends of the first plate body are respectively provided with a rack; two side walls of the second plate body are provided with gears which are meshed with the racks and can rotate, and rotating shafts of the gears are torque rotating shafts.
Furthermore, a first connecting block is arranged at the lower end of the second plate body, a second connecting block is arranged at the upper end of the shielding plate, and the first connecting block is coaxially hinged with the second connecting block; an angle adjusting mechanism for adjusting the rotating angle of the second connecting block around the shaft is correspondingly arranged between the second connecting block and the lower end of the second plate body.
Further, the angle adjusting mechanism is a tripod with an adjustable inner angle; the triangular supports are respectively a first support, a second support and a third support; the central point of the second frame is fixedly connected with the second connecting block; two ends of the second frame are respectively hinged with the first frame and the third frame; the third frame is a long rod with a telescopic length; the first frame is divided into a first support with a shorter length and a second support with a longer length, the first end of the first support is hinged with the lower end of the second plate body, and the second end of the first support is hinged with the third frame and the second support respectively; the arrangement is to make the expansion and contraction degree of the third frame and the rotation angle of the second connecting block have a linear relation.
Further, the third frame is provided with a first cylinder and a second cylinder, and the first cylinder is sleeved in the second cylinder; a rack is arranged on the two side walls, and a rotatable gear meshed with the rack is arranged on the side wall of the second cylinder; the rotating shaft of the gear is set as a torque rotating shaft; the effective fixation of the rotation angle of the second connecting block can be realized by the arrangement.
Compared with the shielding device for preventing the fetus from being irradiated by CT in the prior art, the technical scheme of the invention ensures that the cover body conforms to the heights and the widths of different abdomen bulges of the pregnant woman by adjusting the height and the width of the cover body; the angle of the shielding plate is adjusted to shield the periphery of the raised abdomen of the pregnant woman; the effective fixation of the rotation angle of the shielding plate is realized through the arranged tripod, and the operation is convenient and simple.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic sectional view showing the structure of a carbon fiber sheet according to the present invention;
FIG. 3 is an enlarged view of a partial structure of a carbon fiber sheet according to the present invention;
FIG. 4 is a schematic structural view of the cover of the present invention;
FIG. 5 is a schematic view of the inner structure of the lower cylinder according to the present invention;
FIG. 6 is a schematic view of the structure of the horizontal section of the present invention;
FIG. 7 is a schematic view of the structure of the shielding plate of the present invention;
FIG. 8 is a schematic structural view of an angle adjustment mechanism according to the present invention;
in the figure, 1, a carbon fiber plate; 2. a cover body; 3. a slide rail; 4. a vertical section; 5. a pulley; 7. a horizontal segment; 8. a shielding plate; 9. a frame; 10. a threaded cylinder; 11. a tripod; 401. a threaded rod; 402. a thrust ball bearing; 403. an upper cylinder body; 404. a lower cylinder body; 405. a threaded rod engaged with the externally threaded nut;
406. an externally threaded nut; 407. an internally threaded nut; 408. a threaded rod engaged with the internally threaded nut; 701. a first plate body; 702. a second plate body; 7011. a gear; 7021. a rack; 7022. a first connection block; 801. a second connecting block; 1101. a first bracket; 1102. a second bracket; 1103. a first cylinder;
1104. a third shelf; 1105. a second cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below by specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
EXAMPLE 1A shielding device for protecting a fetus from CT radiation
A shielding device for protecting a fetus from CT radiation, comprising: the mask body 2 is arranged on the surface of the carbon fiber plate 1, and is characterized in that the mask body 2 is detachably connected with the carbon fiber plate 1; the cover body 2 horizontally slides along the surface of the carbon fiber plate 1; the cover body 2 is divided into a vertical section 4 with adjustable height and a horizontal section 7 with adjustable width; two side ends of the horizontal section 7 are respectively provided with a baffle plate 8 hinged with the side end of the horizontal section 7, and an angle adjusting mechanism for instantly fixing the hinged angle is arranged between the baffle plate 8 and the horizontal section 7; the radian of the periphery of the baffle plate 8 is similar to the radian of the raised abdomen of the pregnant woman.
In order to realize the detachable connection of the cover body 2 and the carbon fiber plate 1 and the horizontal sliding of the cover body 2 along the surface of the carbon fiber plate 1; two parallel slide rails 3 are uniformly arranged in the carbon fiber plate 1 along a horizontal direction, and a pulley 5 which slides in the slide rails 3 is arranged in the slide rails 3; the upper ends of pulleys 5 in the two slide rails 3 are in threaded connection with the bottom end of the vertical section 4 of the cover body 2; the end surfaces of the two sides of the pulley 5 are provided with a frame 9 for the pulley 5 to rotate; the upper end of the frame 9 penetrates through the carbon fiber plate 1 and is in threaded connection with the bottom end of the vertical section 4; a thrust ball bearing 402 is arranged at the lower end of the vertical section, and a threaded rod 401 is arranged at the lower end of the thrust ball bearing 402; a threaded cylinder 10 is provided at the upper end of the frame 9, which is in threaded engagement with the threaded rod 401.
The vertical section 4 is divided into an upper cylinder 403 fixedly connected with the horizontal section and a lower cylinder 404 fixedly connected with the thrust ball bearing 402, and the upper cylinder 403 is sleeved in the lower cylinder 404; a thread pushing mechanism is correspondingly arranged between the lower cylinder 404 and the upper cylinder 403; the thread pushing mechanism comprises a threaded rod 401 fixedly connected with the bottom of the upper barrel 403 and an internal thread nut 407 for driving the threaded rod 401 to move axially along the lower barrel 404; the internal thread nut 407 rotates around the central axis of the threaded rod 401 in a fixed axis manner, and the inner edge of the internal thread nut 407 is provided with threads meshed with the threaded rod 401; the above arrangement uses an engagement drive to effect axial movement of the threaded rod 401 and thus the upper cylinder 403.
To achieve a fixed axis rotation of the internally threaded nut 407; an external thread nut 406 is arranged on the outer edge of the internal thread nut 407, and a threaded rod 401 meshed with the external thread nut 406 is arranged along the outer edge of the external thread nut 406; one end of the threaded rod 401 penetrates through the outer wall of the lower cylinder 404; the central axis of the threaded rod 401 is perpendicular to the central axis of the external thread nut 406; a thrust ball bearing 402 is arranged at the lower end of the external thread nut 406, and the lower end of the thrust ball bearing 402 is fixedly connected with the inner wall of the lower cylinder 404.
The horizontal section 7 is provided with two or more plate bodies which are sleeved with each other, and one of the plate bodies slides on the end surface of the other plate body; a shielding plate 8 is arranged at the side end of one plate body; the two plate bodies are a first plate body 701 and a second plate body 702, and the second plate body 702 slides on the end face of the first plate body 701 along a horizontal direction; two side ends of the first plate body 701 are respectively provided with a rack 7021; two side walls of the second plate body 702 are provided with gears 7011 which are meshed with the racks 7021 and can rotate, and a rotating shaft of the gears 7011 is a torque rotating shaft; a first connecting block 7022 is arranged at the lower end of the second plate body 702, a second connecting block is arranged at the upper end of the baffle plate 8, and the first connecting block 7022 is coaxially hinged with the second connecting block; an angle adjusting mechanism for adjusting the rotation angle of the second connecting block around the shaft is correspondingly arranged between the second connecting block and the lower end of the second plate body 702.
The angle adjusting mechanism is a tripod 11 with an adjustable inner angle; the tripod 11 is respectively a first frame, a second frame and a third frame 1104; the central point of the second frame is fixedly connected with the second connecting block; two ends of the second frame are respectively hinged with the first frame and the third frame 1104; the third frame 1104 is a long rod with telescopic length; the first frame is divided into a first frame 1101 with a shorter length and a second frame 1101 with a longer length, a first end of the first frame 1101 is hinged to the lower end of the second plate body 702, and a second end of the first frame 1101 is hinged to the third frame 1104 and the second frame respectively; .
The third frame 1104 is arranged into a first cylinder 1103 and a second cylinder 1105, and the first cylinder 1103 is sleeved in the second cylinder 1105; a rack 7021 is arranged on the two side walls, and a rotatable gear 7011 is arranged on the side wall of the second cylinder 1105; the rotation shaft of the gear 7011 is set as a torque rotation shaft.
Embodiment 2A shielding device for preventing fetus from CT radiation
A shielding device for protecting a fetus from CT radiation, comprising: the mask body 2 is arranged on the surface of the carbon fiber plate 1, and is characterized in that the mask body 2 is detachably connected with the carbon fiber plate 1; the cover body 2 horizontally slides along the surface of the carbon fiber plate 1; the cover body 2 is divided into a vertical section 4 with adjustable height and a horizontal section 7 with adjustable width; two side ends of the horizontal section 7 are respectively provided with a baffle plate 8 hinged with the side end of the horizontal section 7, and an angle adjusting mechanism for instantly fixing the hinged angle is arranged between the baffle plate 8 and the horizontal section 7; the radian of the periphery of the baffle plate 8 is similar to the radian of the raised abdomen of the pregnant woman.
In order to realize the detachable connection of the cover body 2 and the carbon fiber plate 1 and the horizontal sliding of the cover body 2 along the surface of the carbon fiber plate 1; two parallel slide rails 3 are uniformly arranged in the carbon fiber plate 1 along a horizontal direction, and a pulley 5 which slides in the slide rails 3 is arranged in the slide rails 3; the upper ends of pulleys 5 in the two slide rails 3 are in threaded connection with the bottom end of the vertical section 4 of the cover body 2; the end surfaces of the two sides of the pulley 5 are provided with a frame 9 for the pulley 5 to rotate; the upper end of the frame 9 penetrates through the carbon fiber plate 1 and is in threaded connection with the bottom end of the vertical section 4; t-shaped bulges are arranged at two side ends of the rack 9, and grooves matched with the T-shaped bulges are arranged at two side ends of the slide rail 3; a thrust ball bearing 402 is arranged at the lower end of the vertical section, and a threaded rod 401 is arranged at the lower end of the thrust ball bearing 402; a threaded cylinder 10 is provided at the upper end of the frame 9, which is in threaded engagement with the threaded rod 401.
The vertical section 4 is divided into an upper cylinder 403 fixedly connected with the horizontal section and a lower cylinder 404 fixedly connected with the thrust ball bearing 402, and the upper cylinder 403 is sleeved in the lower cylinder 404; a thread pushing mechanism is correspondingly arranged between the lower cylinder 404 and the upper cylinder 403; the thread pushing mechanism comprises a threaded rod 401 fixedly connected with the bottom of the upper barrel 403 and an internal thread nut 407 for driving the threaded rod 401 to move axially along the lower barrel 404; the internal thread nut 407 rotates around the central axis of the threaded rod 401 in a fixed axis manner, and the inner edge of the internal thread nut 407 is provided with threads meshed with the threaded rod 401; the above arrangement uses an engagement drive to effect axial movement of the threaded rod 401 and thus the upper cylinder 403.
To achieve a fixed axis rotation of the internally threaded nut 407; an external thread nut 406 is arranged on the outer edge of the internal thread nut 407, and a threaded rod 401 meshed with the external thread nut 406 is arranged along the outer edge of the external thread nut 406; one end of the threaded rod 401 penetrates through the outer wall of the lower cylinder 404; the central axis of the threaded rod 401 is perpendicular to the central axis of the external thread nut 406; a thrust ball bearing 402 is arranged at the lower end of the external thread nut 406, and the lower end of the thrust ball bearing 402 is fixedly connected with the inner wall of the lower cylinder 404.
The horizontal section 7 is provided with two or more plate bodies which are sleeved with each other, and one of the plate bodies slides on the end surface of the other plate body; a shielding plate 8 is arranged at the side end of one plate body; the two plate bodies are a first plate body 701 and a second plate body 702, and the second plate body 702 slides on the end face of the first plate body 701 along a horizontal direction; two side ends of the first plate body 701 are respectively provided with a rack 7021; two side walls of the second plate body 702 are provided with gears 7011 which are meshed with the racks 7021 and can rotate, and a rotating shaft of the gears 7011 is a torque rotating shaft; a first connecting block 7022 is arranged at the lower end of the second plate body 702, a second connecting block is arranged at the upper end of the baffle plate 8, and the first connecting block 7022 is coaxially hinged with the second connecting block; an angle adjusting mechanism for adjusting the rotation angle of the second connecting block around the shaft is correspondingly arranged between the second connecting block and the lower end of the second plate body 702.
The angle adjusting mechanism is a tripod 11 with an adjustable inner angle; the tripod 11 is respectively a first frame, a second frame and a third frame 1104; the central point of the second frame is fixedly connected with the second connecting block; two ends of the second frame are respectively hinged with the first frame and the third frame 1104; the third frame 1104 is a long rod with telescopic length; the first frame is divided into a first frame 1101 with a shorter length and a second frame 1101 with a longer length, a first end of the first frame 1101 is hinged to the lower end of the second plate body 702, and a second end of the first frame 1101 is hinged to the third frame 1104 and the second frame respectively; .
The third frame 1104 is arranged into a first cylinder 1103 and a second cylinder 1105, and the first cylinder 1103 is sleeved in the second cylinder 1105; a rack 7021 is arranged on the two side walls, and a rotatable gear 7011 is arranged on the side wall of the second cylinder 1105; the rotation shaft of the gear 7011 is set as a torque rotation shaft.
EXAMPLE 3A shielding device for protecting a fetus from CT radiation
A shielding device for protecting a fetus from CT radiation, comprising: the mask body 2 is arranged on the surface of the carbon fiber plate 1, and is characterized in that the mask body 2 is detachably connected with the carbon fiber plate 1; the cover body 2 horizontally slides along the surface of the carbon fiber plate 1; the cover body 2 is divided into a vertical section 4 with adjustable height and a horizontal section 7 with adjustable width; two side ends of the horizontal section 7 are respectively provided with a baffle plate 8 hinged with the side end of the horizontal section 7, and an angle adjusting mechanism for instantly fixing the hinged angle is arranged between the baffle plate 8 and the horizontal section 7; the radian of the periphery of the baffle plate 8 is similar to the radian of the raised abdomen of the pregnant woman.
In order to realize the detachable connection of the cover body 2 and the carbon fiber plate 1 and the horizontal sliding of the cover body 2 along the surface of the carbon fiber plate 1; two parallel slide rails 3 are uniformly arranged in the carbon fiber plate 1 along a horizontal direction, and a pulley 5 which slides in the slide rails 3 is arranged in the slide rails 3; the upper ends of pulleys 5 in the two slide rails 3 are in threaded connection with the bottom end of the vertical section 4 of the cover body 2; engaged insections are arranged between the sliding rail 3 and the pulley 5, and the end surfaces of the two sides of the pulley 5 are provided with a frame 9 for the pulley 5 to rotate; the upper end of the frame 9 penetrates through the carbon fiber plate 1 and is in threaded connection with the bottom end of the vertical section 4; t-shaped bulges are arranged at two side ends of the rack 9, and grooves matched with the T-shaped bulges are arranged at two side ends of the slide rail 3; a thrust ball bearing 402 is arranged at the lower end of the vertical section, and a threaded rod 401 is arranged at the lower end of the thrust ball bearing 402; a threaded cylinder 10 is provided at the upper end of the frame 9, which is in threaded engagement with the threaded rod 401.
The vertical section 4 is divided into an upper cylinder 403 fixedly connected with the horizontal section and a lower cylinder 404 fixedly connected with the thrust ball bearing 402, and the upper cylinder 403 is sleeved in the lower cylinder 404; a thread pushing mechanism is correspondingly arranged between the lower cylinder 404 and the upper cylinder 403; the thread pushing mechanism comprises a threaded rod 401 fixedly connected with the bottom of the upper barrel 403 and an internal thread nut 407 for driving the threaded rod 401 to move axially along the lower barrel 404; the internal thread nut 407 rotates around the central axis of the threaded rod 401 in a fixed axis manner, and the inner edge of the internal thread nut 407 is provided with threads meshed with the threaded rod 401; the above arrangement uses an engagement drive to effect axial movement of the threaded rod 401 and thus the upper cylinder 403.
To achieve a fixed axis rotation of the internally threaded nut 407; an external thread nut 406 is arranged on the outer edge of the internal thread nut 407, and a threaded rod 401 meshed with the external thread nut 406 is arranged along the outer edge of the external thread nut 406; one end of the threaded rod 401 penetrates through the outer wall of the lower cylinder 404; the central axis of the threaded rod 401 is perpendicular to the central axis of the external thread nut 406; a thrust ball bearing 402 is arranged at the lower end of the external thread nut 406, and the lower end of the thrust ball bearing 402 is fixedly connected with the inner wall of the lower cylinder 404.
The horizontal section 7 is provided with two or more plate bodies which are sleeved with each other, and one of the plate bodies slides on the end surface of the other plate body; a shielding plate 8 is arranged at the side end of one plate body; the two plate bodies are a first plate body 701 and a second plate body 702, and the second plate body 702 slides on the end face of the first plate body 701 along a horizontal direction; two side ends of the first plate body 701 are respectively provided with a rack 7021; two side walls of the second plate body 702 are provided with gears 7011 which are meshed with the racks 7021 and can rotate, and a rotating shaft of the gears 7011 is a torque rotating shaft; a first connecting block 7022 is arranged at the lower end of the second plate body 702, a second connecting block is arranged at the upper end of the baffle plate 8, and the first connecting block 7022 is coaxially hinged with the second connecting block; an angle adjusting mechanism for adjusting the rotation angle of the second connecting block around the shaft is correspondingly arranged between the second connecting block and the lower end of the second plate body 702.
The angle adjusting mechanism is a tripod 11 with an adjustable inner angle; the tripod 11 is respectively a first frame, a second frame and a third frame 1104; the central point of the second frame is fixedly connected with the second connecting block; two ends of the second frame are respectively hinged with the first frame and the third frame 1104; the third frame 1104 is a long rod with telescopic length; the first frame is divided into a first frame 1101 with a shorter length and a second frame 1101 with a longer length, a first end of the first frame 1101 is hinged to the lower end of the second plate body 702, and a second end of the first frame 1101 is hinged to the third frame 1104 and the second frame respectively; .
The third frame 1104 is arranged into a first cylinder 1103 and a second cylinder 1105, and the first cylinder 1103 is sleeved in the second cylinder 1105; a rack 7021 is arranged on the two side walls, and a rotatable gear 7011 is arranged on the side wall of the second cylinder 1105; the rotation shaft of the gear 7011 is set as a torque rotation shaft.
The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.
Claims (6)
1. A shielding device for protecting a fetus from CT radiation, comprising: the cover body is arranged on the surface of the carbon fiber plate and is characterized in that the cover body is detachably connected with the carbon fiber plate; the cover body horizontally slides along the surface of the carbon fiber plate; the cover body is divided into a vertical section with adjustable height and a horizontal section with adjustable width; two side ends of the horizontal section are respectively provided with a baffle plate hinged with the side end of the horizontal section, and an angle adjusting mechanism for instantly fixing the hinged angle is arranged between the baffle plate and the horizontal section; the radian of the periphery of the shielding plate is similar to the radian of the raised abdomen of the pregnant woman; the horizontal section is provided with two plate bodies which are mutually sleeved and comprise a first plate body and a second plate body, the second plate body slides on the end face of the first plate body along a horizontal direction, a first connecting block is arranged at the lower end of the second plate body, a second connecting block is arranged at the upper end of the shielding plate, and the first connecting block is coaxially hinged with the second connecting block; an angle adjusting mechanism for adjusting the rotating angle of the second connecting block around the shaft is correspondingly arranged between the second connecting block and the lower end of the second plate body;
the angle adjusting mechanism is a tripod with an adjustable inner angle; the triangular supports are respectively a first support, a second support and a third support; the central point of the second frame is fixedly connected with the second connecting block; two ends of the second frame are respectively hinged with the first frame and the third frame; the third frame is a long rod with a telescopic length; the first frame comprises a first support with a short length and a second support with a long length, the first end of the first support is hinged to the lower end of the second plate body, and the second end of the first support is hinged to the third frame and the second support respectively.
2. A shielding device for preventing a fetus from being subjected to CT radiation according to claim 1, wherein two parallel slide rails are uniformly arranged in the carbon fiber plate along the horizontal direction, and a pulley sliding in each slide rail is arranged in each slide rail; the end faces of two sides of the pulley are provided with a rack for the pulley to rotate, the upper end of the rack penetrates through the carbon fiber plate, and the upper ends of the two racks are in threaded connection with the bottom end of the vertical section.
3. A shielding device for protecting a fetus from CT radiation according to claim 2, wherein a thrust ball bearing is provided at the lower end of the vertical section, and a threaded rod is provided at the lower end of the thrust ball bearing; the upper end of the frame is provided with a thread cylinder body which is engaged with the thread of the threaded rod.
4. The shielding device for preventing the fetus from being subjected to the CT radiation according to claim 1, wherein the vertical section comprises an upper barrel body fixedly connected with the horizontal section and a lower barrel body fixedly connected with a thrust ball bearing, and the upper barrel body is sleeved in the lower barrel body; and a thread propelling mechanism is correspondingly arranged between the lower barrel and the upper barrel.
5. A shielding device for protecting a fetus from CT radiation according to claim 4, wherein a rack is disposed at each of two side ends of the first plate; two side walls of the second plate body are provided with gears which are meshed with the racks and can rotate, and rotating shafts of the gears are torque rotating shafts.
6. A shielding device for protecting a fetus from CT radiation according to claim 5, wherein the third frame includes a first cylinder and a second cylinder, and the first cylinder is sleeved in the second cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110193901.7A CN112998742B (en) | 2021-02-20 | 2021-02-20 | Shielding device for preventing fetus from being irradiated by CT (computed tomography) |
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| CN202110193901.7A CN112998742B (en) | 2021-02-20 | 2021-02-20 | Shielding device for preventing fetus from being irradiated by CT (computed tomography) |
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| CN112998742A CN112998742A (en) | 2021-06-22 |
| CN112998742B true CN112998742B (en) | 2022-03-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AU5308700A (en) * | 1999-06-01 | 2000-12-18 | Cleveland Clinic Foundation, The | Radiation shield |
| DE102004039411A1 (en) * | 2004-08-13 | 2006-02-23 | Siemens Ag | X-ray device with entrained anti-scatter device |
| WO2017083437A1 (en) * | 2015-11-09 | 2017-05-18 | Radiaction Ltd. | Radiation shielding apparatuses and applications thereof |
| CN107280701A (en) * | 2017-07-20 | 2017-10-24 | 刘正 | A kind of new X-ray CT scanner |
| CN208973891U (en) * | 2018-08-15 | 2019-06-14 | 张顺 | A kind of ray isolation protecting device of medical CT scan |
| CN209847217U (en) * | 2018-12-14 | 2019-12-27 | 郗秀莉 | CT inspection protector |
| EP3993705A4 (en) * | 2019-07-02 | 2023-07-19 | Radiaction Ltd. | Deployable radiation shield cover |
| CN214907120U (en) * | 2021-02-20 | 2021-11-30 | 首都医科大学附属北京天坛医院 | Shielding device of CT bed |
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