Ultraviolet disinfection device for magnetic resonance scanning coil cavity

Abstract

The invention relates to the technical field of medical disinfection, in particular to an ultraviolet disinfection device for a magnetic resonance scanning coil cavity, which comprises a vertical frame, the vertical frame is supported on the ground, a support disc is rotatably arranged on the vertical frame, and a support cylinder is arranged in the center of the support disc. The supporting cylinder is located on the rear side of the supporting disc, the length of the supporting cylinder extends in the front-back direction, a rear ultraviolet lamp is arranged in the supporting cylinder in a supporting mode, N movable sleeves are sequentially connected to the outer portion of the supporting cylinder from inside to outside in a threaded mode, and the supporting cylinder and the movable sleeves are made of transparent materials; n groups of gear transmission mechanisms are arranged between the supporting cylinder and the adjacent movable sleeve and between every two adjacent movable sleeves; the rotation of the supporting cylinder can drive the N movable sleeves to slide backwards one by one through the gear transmission mechanism, so that the N movable sleeves are unfolded in the front-back direction in sequence, the N movable sleeves can support the rear of the supporting cylinder, and the ultraviolet disinfection effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical disinfection, in particular to an ultraviolet disinfection device for a magnetic resonance scanning coil cavity. Background Art

[0002] Magnetic resonance imaging (MRI) scans are used to examine various body systems, multiple locations, and a wide range of diseases. They have advantages in the central nervous system, osteoarticular system, and soft tissue. Existing MRI scanners require regular disinfection after use to prevent infection. Ultraviolet disinfection lamps generate short-wavelength ultraviolet light in the 200nm-280nm range, which destroys bacterial DNA and prevents bacterial spread, thus providing a sterilizing and disinfecting effect. Therefore, MRI scanner disinfection devices typically utilize UV ​​lamps for disinfection.

[0003] However, in the existing disinfection device of the magnetic resonance scanner, the ultraviolet lamp is suspended through an external bracket and extends into the inner cavity of the magnetic resonance scanner. Since the inner cavity of the magnetic resonance scanner is usually deep, the ultraviolet lamp is supported at only one end, and the other end will bend under the action of gravity, which leads to uneven lighting and easily damages the ultraviolet lamp, reducing its service life. Summary of the Invention

[0004] Based on this, it is necessary to provide an ultraviolet disinfection device for the magnetic resonance scanning coil cavity to address the technical problem of uneven ultraviolet irradiation in the current magnetic resonance disinfection device.

[0005] The above purpose is achieved through the following technical solutions: A UV disinfection device for a magnetic resonance scanning coil cavity comprises a stand, wherein the stand support is set on the ground, the stand is rotatably provided with a support disk, the center of the support disk is provided with a support tube, the support tube is located on the rear side of the support disk and its length extends in the front-to-back direction, the internal support of the support tube is provided with a rear UV lamp, the rear UV lamp is used to disinfect the scanning coil cavity, the outside of the support tube is sequentially threaded with N movable sleeves from the inside to the outside, N is an integer greater than 2, the support tube and the movable sleeves are both made of transparent material, a gear transmission mechanism is provided between the support tube and the adjacent movable sleeves and between two adjacent movable sleeves, and the gear transmission mechanism is provided with N groups; the rotation of the support tube can drive the N movable sleeves to slide backward one by one through the gear transmission mechanism, so that the N movable sleeves are sequentially unfolded in the front-to-back direction, and then the N movable sleeves can support the rear of the support tube.

[0006] Furthermore, N is equal to 5, and the movable sleeves are respectively the first movable sleeve, the second movable sleeve, the third movable sleeve, the fourth movable sleeve and the fifth movable sleeve from the inside to the outside; the support sleeve is provided with an external thread, the first movable sleeve is provided with a first internal thread and a first external thread, and the external thread cooperates with the first internal thread, the second movable sleeve is provided with a second internal thread and a second external thread, and the second internal thread cooperates with the first external thread, the third movable sleeve is provided with a third internal thread and a third external thread, and the third internal thread cooperates with the second external thread, the fourth movable sleeve is provided with a fourth internal thread and a fourth external thread, and the fourth internal thread cooperates with the third external thread, the fifth movable sleeve is provided with a fifth internal thread, and the fifth internal thread cooperates with the fourth external thread, and the pitches of the first internal thread, the second internal thread, the third internal thread, the fourth internal thread and the fifth internal thread decrease successively.

[0007] Furthermore, the support plate is provided with four support arms, which extend radially along the support plate and are capable of retracting. Each support arm is provided with a guide rod extending in the front-to-back direction. Five groups of gear transmission mechanisms are simultaneously slidably sleeved on the four guide rods in the front-to-back direction. Each group of gear transmission mechanisms includes four telescopic rods, and the telescopic rods correspond one-to-one to the front and back of the support arms.

[0008] Furthermore, an intermediate gear is provided on the side of the telescopic rod close to the support tube, and a mounting bracket is fixedly provided on one side of the intermediate gear, and a front transmission gear and a rear transmission gear are rotatably provided on the mounting bracket, and the intermediate gear is meshed with the front transmission gear and the rear transmission gear at the same time, and the front transmission gear is connected to the front bevel gear through a connecting rod, and the rear transmission gear is connected to the rear bevel gear through a connecting rod, and a front bevel gear ring is provided on the support tube and the first movable sleeve to the fourth movable sleeve, and the front bevel gear ring is matched with the front bevel gear, and a transmission frame that slides forward and backward is provided on the first movable sleeve to the fourth movable sleeve, and a rear conical ring is provided on the transmission frame, and the rear conical ring is connected to the rear bevel gear.

[0009] Furthermore, the transmission frame is provided with a plurality of sliding rods, which extend in the front-rear direction. The first movable sleeve to the fourth movable sleeve are provided with sliding grooves, and the sliding rods slide in cooperation with the sliding grooves. The rotation of the transmission frame can drive the movable sleeve to rotate.

[0010] Furthermore, the support tube and the first to fourth movable sleeves are provided with limiting ring grooves, and the end of the telescopic rod is provided with a clamping block, which can slide along the limiting ring groove and will not fall out of the limiting ring groove.

[0011] Furthermore, the telescopic rod includes a first screw and a second screw, the intermediate gear is located on the first screw, the blocking block is located at one end of the first screw, the other end of the first screw is threadedly engaged with the second screw, and the end of the second screw away from the first screw is provided with a connecting rod, and the connecting rod is slidably connected to a fixed cylinder, and the fixed cylinder is slidably set on the guide rod, and a cleaning block is provided on the fixed cylinder, and the cleaning block is used to clean the inner wall of the scanning coil cavity. The connecting rod is sealed and slidably set in the fixed cylinder, and the rotation of the first screw causes the second screw to move in a direction away from the supporting cylinder, thereby driving the connecting rod to first compress the air inside the fixed cylinder, and then push the cleaning block to contact the scanning coil cavity.

[0012] Furthermore, the fifth movable sleeve is connected to a limiting rod, and the bottom of the scanning coil cavity is provided with a limiting groove extending in the front-to-back direction. The limiting rod slides along the limiting groove, so that the limiting rod can limit the rotation of the fifth movable sleeve, so that the fifth movable sleeve can only move forward and backward.

[0013] Furthermore, a front ultraviolet lamp is provided on the front side of the support plate, and the front ultraviolet lamp is used to disinfect the MRI examination bed.

[0014] Furthermore, the stand is provided with a driving mechanism, which can drive the supporting plate to rotate.

[0015] The beneficial effects of the present invention are: The ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by the present invention, when in use, makes the first movable sleeve to the fifth movable sleeve on the support tube fully unfolded, so that the external support length of the support tube is longer, and the supporting effect of the support tube is better, so that the rear end of the support tube is not easy to sag, and the rear ultraviolet lamp inside the support tube is located in the center position of the scanning coil cavity, so that the ultraviolet light is evenly irradiated, thereby improving the ultraviolet disinfection effect.

[0016] Second, in the process of disinfecting the scanning coil cavity, the dust in the scanning coil cavity can also be cleaned at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by one embodiment of the present invention; Figure 2 A side view of an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by one embodiment of the present invention; Figure 3 for Figure 2 A magnified view of the structure at center A; Figure 4 A side view of an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by one embodiment of the present invention; Figure 5 A cross-sectional view of an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by one embodiment of the present invention; Figure 6 for Figure 5 A magnified view of the structure at point C in the middle; Figure 7 for Figure 5 A magnified view of the structure at point B in the middle; Figure 8 A partial structural cross-sectional view of an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by one embodiment of the present invention; Figure 9 A schematic structural diagram of a support tube and a movable sleeve in an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by one embodiment of the present invention; Figure 10 for Figure 9 A magnified view of the structure at point D in the middle; Figure 11 A schematic diagram of the expansion of a support tube and a movable sleeve in a UV disinfection device for a magnetic resonance scanning coil cavity provided by one embodiment of the present invention; Figure 12 This is a schematic structural diagram of a fifth movable sleeve in an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by one embodiment of the present invention.

[0018] in: 101. MRI equipment; 102. MRI bed; 103. Stand; 104. Front UV lamp; 105. Support plate; 1051. Guide rod; 107. Support cylinder; 108. Rear UV lamp; 1081. Fifth movable sleeve; 1082. Fourth movable sleeve; 1083. Third movable sleeve; 1084. Second movable sleeve; 1085. First movable sleeve; 1086. Limiting ring groove; 109. Front bevel gear ring; 110, rear transmission gear; 111, mounting frame; 112, intermediate gear; 1121, clamping block; 113, first screw; 114, second screw; 1141, connecting rod; 115, transmission frame; 1151, sliding rod; 1152, rear conical ring; 116, cleaning block; 117, fixing cylinder; 118, limiting rod; 119, driving motor; 120, front transmission gear; 200, telescopic rod. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0021] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0022] like Figures 1 to 12As shown, an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by an embodiment of the present invention includes a stand 103, the stand 103 is supported and set on the ground, the stand 103 is located at the opening of the scanning coil cavity of the magnetic resonance device 101, a magnetic resonance bed 102 is slidably provided on the magnetic resonance device 101, a support plate 105 is rotatably provided on the stand 103, a support tube 107 is provided at the center of the support plate 105, the support tube 107 is located at the rear side of the support plate 105 and the length extends in the front-to-back direction, the interior of the support tube 107 is supported and provided with a rear ultraviolet lamp 108, the rear ultraviolet lamp 108 is used to disinfect the scanning coil cavity. The exterior of the support tube 107 is threadedly connected to N movable sleeves from the inside out, where N is an integer greater than 2. Both the support tube 107 and the movable sleeves are made of transparent materials. Gear transmission mechanisms are provided between the support tube 107 and adjacent movable sleeves, as well as between two adjacent movable sleeves. There are N sets of gear transmission mechanisms. The rotation of the support tube 107 can drive the N movable sleeves to slide backward one by one through the gear transmission mechanism, causing the N movable sleeves to sequentially deploy in the front-to-back direction, thereby supporting the rear of the support tube 107. The length of the support tube 107 is substantially the same as that of the rear UV lamp 108. The rear end of each movable sleeve has a circular baffle with an opening in which the support tube 107 slides, thereby supporting the support tube 107.

[0023] In one embodiment, N is equal to 5, such as Figure 8 and Figure 9 As shown, the movable sleeves are respectively the first movable sleeve 1085, the second movable sleeve 1084, the third movable sleeve 1083, the fourth movable sleeve 1082 and the fifth movable sleeve 1081 from the inside to the outside; the support tube 107 is provided with an external thread, the first movable sleeve 1085 is provided with a first internal thread and a first external thread, and the external thread cooperates with the first internal thread, the second movable sleeve 1084 is provided with a second internal thread and a second external thread, and the second internal thread cooperates with the first external thread, the third movable sleeve 1083 is provided with a third internal thread and a third external thread, and the third internal thread cooperates with the second external thread, the fourth movable sleeve 1082 is provided with a fourth internal thread and a fourth external thread, and the fourth internal thread cooperates with the third external thread, the fifth movable sleeve 1081 is provided with a fifth internal thread, and the fifth internal thread cooperates with the fourth external thread, and the pitches of the first internal thread, the second internal thread, the third internal thread, the fourth internal thread and the fifth internal thread decrease successively.

[0024] In this way, the first movable sleeve 1085 can rotate in the opposite direction relative to the support tube 107 and slide backward, the second movable sleeve 1084 can rotate in the opposite direction relative to the first movable sleeve 1085 and slide backward, the third movable sleeve 1083 can rotate in the opposite direction relative to the second movable sleeve 1084 and slide backward, the fourth movable sleeve 1082 can rotate in the opposite direction relative to the third movable sleeve 1083 and slide backward, and the fifth movable sleeve 1081 can slide backward relative to the fourth movable sleeve 1082 but not rotate. At the same time, the backward movement distances of the first movable sleeve 1085, the second movable sleeve 1084, the third movable sleeve 1083, the fourth movable sleeve 1082, and the fifth movable sleeve 1081 gradually decrease. Since the rear end bears a greater gravity, the forces acting on each movable sleeve are more balanced.

[0025] In other embodiments, the number of the movable sleeves may be 2, 3 or 4, which is selected according to the length of the rear UV lamp 108, and the number of the corresponding gear transmission mechanisms is the same as the number of the movable sleeves.

[0026] In one embodiment, the support disc 105 is provided with four support arms, which extend radially along the support disc 105 and are retractable. Each support arm is provided with a guide rod 1051 extending in the front-to-back direction. Five gear transmission mechanisms are simultaneously slidably mounted on the four guide rods 1051 in the front-to-back direction. Each gear transmission mechanism includes four telescopic rods 200, each corresponding to a front-to-back support arm. The support arms are hydraulically operated, and both the support arms and the telescopic rods 200 can be extended and retracted synchronously, thereby accommodating scanning coil cavities of varying sizes.

[0027] In one embodiment, an intermediate gear 112 is provided on one side of the telescopic rod 200 close to the support tube 107, and a mounting bracket 111 is fixedly provided on one side of the intermediate gear 112. A front transmission gear 120 and a rear transmission gear 110 are rotatably provided on the mounting bracket 111. The intermediate gear 112 is simultaneously engaged with the front transmission gear 120 and the rear transmission gear 110. The front transmission gear 120 is connected to the front bevel gear through a connecting rod transmission, and the rear transmission gear 110 is connected to the rear bevel gear through a connecting rod transmission. A front bevel gear ring 109 is provided on the support tube 107 and the first movable sleeve 1085 to the fourth movable sleeve 1082, and the front bevel gear ring 109 cooperates with the front bevel gear transmission, such as Figure 11 As shown, the first movable sleeve 1085 to the fourth movable sleeve 1082 are all provided with a transmission frame 115 that slides forward and backward, and the transmission frame 115 is provided with a rear conical ring 1152, and the rear conical ring 1152 is transmission-connected to the rear bevel gear.

[0028] In one embodiment, if Figure 5 and Figure 11The transmission frame 115 is also provided with multiple sliding rods 1151, and the sliding rods 1151 extend along the front-to-back direction. The first movable sleeve 1085 to the fourth movable sleeve 1082 are provided with sliding grooves, and the sliding rods 1151 slide in cooperation with the sliding grooves. The rotation of the transmission frame 115 can drive the movable sleeve to rotate.

[0029] In one embodiment, a limiting ring groove 1086 is provided on the support tube 107 and the first movable sleeve 1085 to the fourth movable sleeve 1082, and a clamping block 1121 is provided at the end of the telescopic rod 200. The clamping block 1121 can slide along the limiting ring groove 1086, and the clamping block 1121 will not fall out of the limiting ring groove 1086.

[0030] In one embodiment, the telescopic rod 200 includes a first screw 113 and a second screw 114, the intermediate gear 112 is located on the first screw 113, the blocking block 1121 is located at one end of the first screw 113, the other end of the first screw 113 is threadedly engaged with the second screw 114, and the end of the second screw 114 away from the first screw 113 is provided with a connecting rod 1141, the connecting rod 1141 is slidably connected to a fixed cylinder 117, the fixed cylinder 117 is slidably set on the guide rod 1051, and the fixed cylinder 117 is provided with a cleaning block 116, which is used to clean the inner wall of the scanning coil cavity, and the connecting rod 1141 is sealingly slidably set in the fixed cylinder 117. The rotation of the first screw 113 causes the second screw 114 to move in a direction away from the supporting cylinder 107, thereby driving the connecting rod 1141 to first compress the air inside the fixed cylinder 117, and then push the cleaning block 116 to contact the scanning coil cavity. The cleaning blocks 116 on the four telescopic rods 200 form a cleaning ring, and the cleaning blocks 116 are sponge blocks.

[0031] In one embodiment, the fifth movable sleeve 1081 is connected to a limiting rod 118. A limiting groove (not shown) extending in the front-to-back direction is provided at the bottom of the scanning coil cavity. The limiting rod 118 slides along the limiting groove, thereby limiting the rotation of the fifth movable sleeve 1081, restricting its forward and backward movement. The fifth movable sleeve 1081 and the fourth movable sleeve 1082 are threaded together, and when the fourth movable sleeve 1082 rotates, the fifth movable sleeve 1081 moves backward.

[0032] In one embodiment, a front UV lamp 104 is provided on the front side of the support plate 105. This UV lamp 104 is used to disinfect the MRI examination table. This provides more comprehensive disinfection and improved disinfection effectiveness. Both the front UV lamp 104 and the rear UV lamp 108 are UV lamps, each with LEDs evenly arranged on a cylindrical substrate.

[0033] In one embodiment, a driving mechanism is provided on the stand 103, and the driving mechanism can drive the support plate 105 to rotate. The driving mechanism is a driving motor 119. Wheels can be provided at the bottom of the stand 103, and the wheels can be controlled by a remote control.

[0034] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows: By remotely controlling the mobile stand 103, the support tube 107 is made to correspond to the scanning coil cavity of the magnetic resonance device 101 and inserted into the scanning coil cavity. The limiting rod 118 on the fifth movable sleeve 1081 on the support tube 107 slides along the limiting groove of the scanning coil cavity. The cleaning block 116 is in a state of close contact with the scanning coil cavity, ensuring that the cleaning block 116 can slide smoothly along the scanning coil cavity.

[0035] In the initial state, the front-to-back length from the first movable sleeve 1085 to the fifth movable sleeve 1081 is the smallest. The drive motor 119 is then activated, driving the support disc 105 to rotate forward. The rotation of the support disc 105 drives the support arm and support cylinder 107 to rotate forward synchronously. The support arm drives the guide rod 1051 to rotate, which in turn drives the multiple gear transmission mechanisms to rotate circumferentially around the limiting ring groove 1086 of the support cylinder 107 or the movable sleeve. The rotation of the support cylinder 107 drives the front bevel gear ring 109 thereon to rotate, and the rotation of the front bevel gear ring 109 drives the front bevel gear to rotate and then drives the front transmission gear 120 to rotate, and the front transmission gear 120 drives the rear transmission gear 110 to rotate through the intermediate gear 112, and the rear transmission gear 110 drives the rear bevel gear to rotate, and then drives the rear conical ring 1152 on the transmission frame 115 to rotate, so that after the transmission frame 115 rotates, it drives the first movable sleeve 1085 to rotate in the opposite direction through the multiple sliding rods 1151 thereon. Since the first movable sleeve 1085 cooperates with the external thread on the support cylinder 107 through the first internal thread, the reverse rotation of the first movable sleeve 1085 can make the first movable sleeve 1085 slide backward along the support cylinder 107.

[0036] The first movable sleeve 1085 slides backward and rotates in the opposite direction, driving the second movable sleeve 1084 to slide backward and rotate forward via the gear transmission mechanism. The second movable sleeve 1084 slides backward and rotates forward, driving the third movable sleeve 1083 to slide backward and rotate in the opposite direction via the gear transmission mechanism. The third movable sleeve 1083 slides backward and rotates in the opposite direction, driving the fourth movable sleeve 1082 to slide backward and rotate forward via the gear transmission mechanism. The transmission process of the gear transmission mechanism is the same as the process of the support cylinder 107 driving the first movable sleeve 1085 to rotate, and will not be repeated here.

[0037] Since the transmission frame 115 is not set on the fifth movable sleeve 1081, and the fifth movable sleeve 1081 will not rotate under the action of the limit rod 118, the fourth movable sleeve 1082 slides backward and rotates forward, and the fifth movable sleeve 1081 is driven to move only backward through the fourth external thread and the fifth internal thread, thereby realizing the full deployment of the first movable sleeve 1085 to the fifth movable sleeve 1081 on the support tube 107. The external support length of the support tube 107 is longer, and the support effect on the support tube 107 is better. The rear end of the support tube 107 is not easy to sag, so that the rear ultraviolet lamp 108 is in the center position of the scanning coil cavity, so that the ultraviolet light is evenly irradiated.

[0038] When each gear transmission mechanism is in operation, the rotation of the intermediate gear 112 on the telescopic rod 200 drives the first screw 113 to rotate, causing the second screw 114 to move away from the first screw 113. The connecting rod 1141 on the second screw 114 slides along the fixed cylinder 117 of the cleaning block 116, driving the connecting rod 1141 to first compress the air inside the fixed cylinder 117. After the air is compressed to a certain level, the connecting rod 1141 drives the fixed cylinder 117 away from the support cylinder 107, bringing the cleaning block 116 into contact with the scanning coil cavity. The connecting rod 1141 first compresses the air inside the fixed cylinder 117 before driving the cleaning block 116 to move, causing each movable sleeve to first deploy backward and then clean, preventing the cleaning block 116 from affecting the deployment of multiple movable sleeves. Thus, during the disinfection process of the scanning coil cavity, dust in the scanning coil cavity can also be simultaneously cleaned.

[0039] Finally, the rear UV lamp 108 and the front UV lamp 104 are turned on to start disinfection. After the disinfection is completed, the front UV lamp 104 and the rear UV lamp 108 are turned off, and the UV disinfection device for the magnetic resonance scanning coil cavity is withdrawn from the scanning coil cavity.

[0040] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An ultraviolet disinfection device for a magnetic resonance scanning coil cavity, characterized in that: It includes a stand, which is supported and arranged on the ground. A support plate is rotatably provided on the stand, a support tube is provided in the center of the support plate, the support tube is located on the rear side of the support plate and its length extends in the front-to-back direction, a rear ultraviolet lamp is provided on the internal support of the support tube, and the rear ultraviolet lamp is used to disinfect the scanning coil cavity, and N movable sleeves are threadedly connected to the outside of the support tube in sequence from the inside to the outside, N is an integer greater than 2, and the support tube and the movable sleeves are both made of transparent materials, and a gear transmission mechanism is provided between the support tube and the adjacent movable sleeves and between two adjacent movable sleeves, and the gear transmission mechanism is provided with N groups; the rotation of the support tube can drive the N movable sleeves to slide backward one by one through the gear transmission mechanism, so that the N movable sleeves are unfolded in the front-to-back direction in sequence, and then the N movable sleeves can support the rear of the support tube.

2. The ultraviolet disinfection device for a magnetic resonance scanning coil cavity according to claim 1, characterized in that: N is equal to 5, and the movable sleeves are respectively the first movable sleeve, the second movable sleeve, the third movable sleeve, the fourth movable sleeve and the fifth movable sleeve from the inside to the outside; the support tube is provided with an external thread, the first movable sleeve is provided with a first internal thread and a first external thread, and the external thread cooperates with the first internal thread, the second movable sleeve is provided with a second internal thread and a second external thread, and the second internal thread cooperates with the first external thread, the third movable sleeve is provided with a third internal thread and a third external thread, and the third internal thread cooperates with the second external thread, the fourth movable sleeve is provided with a fourth internal thread and a fourth external thread, and the fourth internal thread cooperates with the third external thread, the fifth movable sleeve is provided with a fifth internal thread, and the fifth internal thread cooperates with the fourth external thread, and the pitches of the first internal thread, the second internal thread, the third internal thread, the fourth internal thread and the fifth internal thread decrease successively.

3. The ultraviolet disinfection device for a magnetic resonance scanning coil cavity according to claim 2, characterized in that: The support plate is provided with four support arms, which extend radially along the support plate and are telescopic. Each support arm is provided with a guide rod extending in the front-to-back direction. Five groups of gear transmission mechanisms are simultaneously slidably sleeved on the four guide rods in the front-to-back direction. Each group of gear transmission mechanisms includes four telescopic rods, and the telescopic rods correspond to the support arms one by one in front and back.

4. The ultraviolet disinfection device for a magnetic resonance scanning coil cavity according to claim 3, characterized in that: An intermediate gear is provided on one side of the telescopic rod close to the supporting tube, and a mounting frame is fixedly provided on one side of the intermediate gear, a front transmission gear and a rear transmission gear are rotatably provided on the mounting frame, the intermediate gear is meshed with the front transmission gear and the rear transmission gear at the same time, the front transmission gear is connected to the front bevel gear through a connecting rod transmission, and the rear transmission gear is connected to the rear bevel gear through a connecting rod transmission, the supporting tube and the first movable sleeve to the fourth movable sleeve are all provided with a front bevel gear ring, the front bevel gear ring is transmission-coordinated with the front bevel gear, the first movable sleeve to the fourth movable sleeve are all provided with a transmission frame that slides forward and backward, the transmission frame is provided with a rear conical ring, and the rear conical ring is transmission-connected with the rear bevel gear.

5. The ultraviolet disinfection device for a magnetic resonance scanning coil cavity according to claim 4, characterized in that: The transmission frame is also provided with a plurality of slide bars, which extend in the front-rear direction. The first to fourth movable sleeves are provided with slide grooves, and the slide bars are slidably matched with the slide grooves. The rotation of the transmission frame can drive the movable sleeve to rotate.

6. The ultraviolet disinfection device for a magnetic resonance scanning coil cavity according to claim 5, characterized in that: The support tube and the first to fourth movable sleeves are all provided with limiting ring grooves, and the end of the telescopic rod is provided with a clamping block, which can slide along the limiting ring groove and will not fall out of the limiting ring groove.

7. The ultraviolet disinfection device for a magnetic resonance scanning coil cavity according to claim 6, characterized in that: The telescopic rod includes a first screw and a second screw, the intermediate gear is located on the first screw, the block is located at one end of the first screw, the other end of the first screw is threadedly matched with the second screw, and the end of the second screw away from the first screw is provided with a connecting rod, and the connecting rod is slidably connected to a fixed cylinder, and the fixed cylinder is slidably set on a guide rod, and a cleaning block is provided on the fixed cylinder, and the cleaning block is used to clean the inner wall of the scanning coil cavity. The connecting rod is sealingly slidably set in the fixed cylinder, and the rotation of the first screw causes the second screw to move in a direction away from the supporting cylinder, thereby driving the connecting rod to first compress the air inside the fixed cylinder, and then push the cleaning block to contact the scanning coil cavity.

8. The ultraviolet disinfection device for a magnetic resonance scanning coil cavity according to claim 6, characterized in that: The fifth movable sleeve is connected to a limiting rod, and a limiting groove extending in the front-to-back direction is provided at the bottom of the scanning coil cavity. The limiting rod slides along the limiting groove, so that the limiting rod can limit the rotation of the fifth movable sleeve, so that the fifth movable sleeve can only move forward and backward.

9. The ultraviolet disinfection device for a magnetic resonance scanning coil cavity according to claim 1, characterized in that: A front ultraviolet lamp is arranged on the front side of the support plate, and the front ultraviolet lamp is used to disinfect the nuclear magnetic resonance examination bed.

10. The ultraviolet disinfection device for a magnetic resonance scanning coil cavity according to claim 1, characterized in that: The stand is provided with a driving mechanism, and the driving mechanism can drive the supporting plate to rotate.

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