Ultraviolet disinfection device for magnetic resonance scanning coil cavity

Abstract

The present invention relates to the field of medical disinfection technology, and in particular to an ultraviolet disinfection device for a magnetic resonance scanning coil cavity, comprising a stand, wherein the stand is supported and arranged on the ground, a support plate is rotatably provided on the stand, a support tube is provided at the center of the support tube, the support tube is located at the rear side of the support tube and the length extends in the front-to-back direction, a rear ultraviolet lamp is supported inside the support tube, N movable sleeves are threadedly connected to the outside of the support tube in sequence from the inside to the outside, the support tube and the movable sleeves are both made of transparent materials, 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 backwards 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, thereby improving the ultraviolet disinfection effect.

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 scanning is used to examine various systems, multiple parts, and multiple diseases of the whole body. It has advantages in the central nervous system, bone and joint system, and soft tissue. Existing MRI scanners need to be disinfected regularly after use to avoid infection. The short-wave ultraviolet rays in the range of 200nm-280nm produced by ultraviolet disinfection lamps can destroy bacterial DNA, prevent bacterial spread, and play a role in sterilization and disinfection. Therefore, the disinfection device of the MRI scanner usually uses ultraviolet 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 will lead to uneven lighting and easily damage 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 a magnetic resonance scanning coil cavity in order to address the technical problem of uneven ultraviolet irradiation in current magnetic resonance disinfection devices.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A UV disinfection device for a magnetic resonance scanning coil cavity comprises a stand, wherein the stand is supported and arranged on the ground, a support plate is rotatably provided on the stand, a support tube is provided at the center of the support disk, the support tube is located at the rear side of the support disk and its length extends in the front-to-back direction, a rear UV lamp is provided inside the support tube, and the rear UV lamp is used to disinfect the scanning coil cavity, 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, the support tube and the movable sleeves are both made of transparent materials, 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 backwards 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.

[0007] Further, 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.

[0008] Furthermore, the support plate is provided with four support arms, which extend radially along the support plate and are capable of being retracted, and each support arm is provided with a guide rod extending in the front-to-back direction, and five groups of gear transmission mechanisms are simultaneously slidably sleeved on the four guide rods in the front-to-back direction, and each group of gear transmission mechanisms includes four retractable rods, and the retractable rods correspond one-to-one to the front and back of the support arms.

[0009] Furthermore, 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.

[0010] Furthermore, the transmission frame is provided with a plurality of sliding rods, the sliding rods extending in the front-rear direction, the first movable sleeve to the fourth movable sleeve are provided with sliding grooves, the sliding rods are slidably matched with the sliding grooves, and the rotation of the transmission frame can drive the movable sleeve to rotate.

[0011] 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.

[0012] Furthermore, 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 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.

[0013] 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, and 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.

[0014] 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.

[0015] Furthermore, the stand is provided with a driving mechanism, and the driving mechanism can drive the supporting plate to rotate.

[0016] The beneficial effects of the present invention are:

[0017] The ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by the present invention, when in use, can make the first movable sleeve to the fifth movable sleeve on the supporting tube fully unfolded, so that the external supporting length of the supporting tube is longer, and the supporting effect of the supporting tube is better, so that the rear end of the supporting tube is not easy to sag, and the rear ultraviolet lamp inside the supporting tube is located in the center of the scanning coil cavity, so that the ultraviolet light is evenly irradiated, and the ultraviolet disinfection effect is improved.

[0018] 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

[0019] Figure 1 A schematic diagram of the three-dimensional structure of an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by an embodiment of the present invention;

[0020] Figure 2 A side view of an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A magnified view of the structure at center;

[0022] Figure 4A side view of an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by an embodiment of the present invention;

[0023] 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;

[0024] Figure 6 for Figure 5 A magnified view of the structure at C in the middle;

[0025] Figure 7 for Figure 5 A magnified view of the structure at B in the middle;

[0026] Figure 8 A partial structural cross-sectional view of an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by an embodiment of the present invention;

[0027] Fig. 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 an embodiment of the present invention;

[0028] Fig.10 for Fig. 9 A magnified view of the structure at D in the middle;

[0029] Fig.11 A schematic diagram of the expansion of a support tube and a movable sleeve in an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided by an embodiment of the present invention;

[0030] Fig.12 A schematic structural diagram of a fifth movable sleeve in an ultraviolet disinfection device for a magnetic resonance scanning coil cavity provided in one embodiment of the present invention.

[0031] in:

[0032] 101, magnetic resonance equipment; 102, magnetic resonance bed; 103, stand; 104, front ultraviolet lamp; 105, support plate; 1051, guide rod; 107, support tube; 108, rear ultraviolet lamp; 1081, fifth movable sleeve; 1082, fourth movable sleeve; 1083, third movable sleeve; 1084, second movable sleeve; 1085, first movable sleeve; 1086, limit ring groove; 109, Front bevel gear ring; 110, rear transmission gear; 111, mounting frame; 112, intermediate gear; 1121, clamping block; 113, first screw rod; 114, second screw rod; 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

[0033] In order to make the purpose, technical solution 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 used to limit the present invention.

[0034] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] 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 comprises a stand 103, wherein the stand 103 is supported and arranged on the ground, the stand 103 is located at the opening of the scanning coil cavity of a magnetic resonance device 101, a magnetic resonance bed 102 is slidably arranged on the magnetic resonance device 101, a support plate 105 is rotatably arranged on the stand 103, a support tube 107 is arranged 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, a rear ultraviolet lamp 108 is supported and arranged inside the support tube 107, and the rear ultraviolet lamp 108 is used to disinfect the scanning coil cavity. The outside of the support tube 107 is threadedly connected with N movable sleeves from the inside to the outside, N is an integer greater than 2, the support tube 107 and the movable sleeves are both made of transparent materials, and the support tube 107 and the adjacent movable sleeves and between two adjacent movable sleeves are provided with gear transmission mechanisms, and the gear transmission mechanisms are provided with N groups; the rotation of the support tube 107 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 and rear directions, and then the N movable sleeves can support the rear of the support tube 107. The length of the support tube 107 is basically the same as the length of the rear ultraviolet lamp 108, and the rear end of each movable sleeve has a circular baffle, and the circular baffle is provided with an opening, and the support tube 107 is slidably set in the opening, so as to support the support tube 107.

[0037] In one embodiment, N is equal to 5, such as Figure 8 and Fig. 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 sleeve 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.

[0038] 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, and since the gravity borne by the rear end is large, the forces on each movable sleeve are more balanced.

[0039] 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 ultraviolet lamp 108, and the number of the corresponding gear transmission mechanisms is the same as the number of the movable sleeves.

[0040] In one embodiment, the support plate 105 is provided with four support arms, the support arms extend in the radial direction of the support plate 105 and can be retracted, each support arm is provided with a guide rod 1051 extending in the front-to-back direction, 5 sets of gear transmission mechanisms are simultaneously slidably sleeved on the four guide rods 1051 in the front-to-back direction, each set of gear transmission mechanisms includes four telescopic rods 200, and the telescopic rods 200 correspond to the front and back of the support arms one by one. The support arms are hydraulic rods, and the support arms and the telescopic rods 200 can be retracted synchronously, so as to adapt to scanning coil cavities of different sizes.

[0041] 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 frame 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 frame 111, and the intermediate gear 112 is meshed with the front transmission gear 120 and the rear transmission gear 110 at the same time, 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, and the support tube 107 and the first movable sleeve 1085 to the fourth movable sleeve 1082 are all provided with a front bevel gear ring 109, and the front bevel gear ring 109 cooperates with the front bevel gear transmission, such as Fig.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 drivingly connected to the rear bevel gear.

[0042] In one embodiment, if Figure 5 and Fig.11The transmission frame 115 is also provided with a plurality of slide bars 1151, and the slide bars 1151 extend in the front-rear direction. The first movable sleeve 1085 to the fourth movable sleeve 1082 are provided with slide grooves, and the slide bars 1151 slide in cooperation with the slide grooves. The rotation of the transmission frame 115 can drive the movable sleeves to rotate.

[0043] 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.

[0044] In one embodiment, the telescopic rod 200 includes a first screw rod 113 and a second screw rod 114, the intermediate gear 112 is located on the first screw rod 113, the block 1121 is located at one end of the first screw rod 113, the other end of the first screw rod 113 is threadedly engaged with the second screw rod 114, and the end of the second screw rod 114 away from the first screw rod 113 is provided with a connecting rod 1141, and the connecting rod 1141 is slidably connected with a fixed cylinder 117, and the fixed cylinder 117 is slidably set on the guide rod 1051, and a cleaning block 116 is provided on the fixed cylinder 117, and the cleaning block 116 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, and the rotation of the first screw rod 113 causes the second screw rod 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.

[0045] In one embodiment, the fifth movable sleeve 1081 is connected to a limiting rod 118, and a limiting groove (not shown) extending in the front-to-back direction is provided at the bottom of the scanning coil cavity, and the limiting rod 118 slides along the limiting groove, so that the limiting rod 118 can limit the rotation of the fifth movable sleeve 1081, so that the fifth movable sleeve 1081 can only move forward and backward. The fifth movable sleeve 1081 and the fourth movable sleeve 1082 are screwed together, and when the fourth movable sleeve 1082 rotates, the fifth movable sleeve 1081 moves backward.

[0046] In one embodiment, a front ultraviolet lamp 104 is provided on the front side of the support plate 105, and the front ultraviolet lamp 104 is used to disinfect the MRI examination bed. In this way, the disinfection is more comprehensive and the disinfection effect is better. The front ultraviolet lamp 104 and the rear ultraviolet lamp 108 are both ultraviolet lamps, and LED lamp beads are evenly arranged on the cylindrical substrate.

[0047] 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 controller.

[0048] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows:

[0049] The stand 103 is moved by remote control so that its support tube 107 corresponds to the scanning coil cavity of the magnetic resonance device 101 and is 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.

[0050] In the initial state, the front-to-back length from the first movable sleeve 1085 to the fifth movable sleeve 1081 is the smallest. Then the driving motor 119 is started, and the driving motor 119 drives the support plate 105 to rotate forwardly. The rotation of the support plate 105 drives the support arm and the support cylinder 107 to rotate forwardly synchronously. The support arm drives the guide rod 1051 to rotate, and the guide rod 1051 drives multiple gear transmission mechanisms to rotate circumferentially around the support cylinder 107 or the limiting ring groove 1086 of the movable sleeve. The rotation of the support tube 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, because the first movable sleeve 1085 cooperates with the external thread on the support tube 107 through the first internal thread, so the reverse rotation of the first movable sleeve 1085 can make the first movable sleeve 1085 slide backward along the support tube 107.

[0051] The first movable sleeve 1085 slides backward and rotates in the opposite direction, and drives the second movable sleeve 1084 to slide backward and rotate forward through the gear transmission mechanism; the second movable sleeve 1084 slides backward and rotates forward, and drives the third movable sleeve 1083 to slide backward and rotate in the opposite direction through the gear transmission mechanism; the third movable sleeve 1083 slides backward and rotates in the opposite direction, and drives the fourth movable sleeve 1082 to slide backward and rotate forward through 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.

[0052] 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 limiting rod 118, the fourth movable sleeve 1082 slides backward and rotates forward, and the fifth movable sleeve 1081 is driven by the fourth external thread and the fifth internal thread to move only backward, 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 supporting 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 located in the center position of the scanning coil cavity, so that the ultraviolet light is evenly irradiated.

[0053] 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, so that the second screw 114 moves away from the first screw 113, and 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 extent, the connecting rod 1141 drives the fixed cylinder 117 to move away from the support cylinder 107, so that the cleaning block 116 contacts the scanning coil cavity. The connecting rod 1141 first compresses the air inside the fixed cylinder 117, and then drives the cleaning block 116 to move, so that each movable sleeve is first deployed backwards and then cleaned, so as to avoid the cleaning block 116 affecting the deployment of multiple movable sleeves. Therefore, in the process of disinfecting the scanning coil cavity, the dust in the scanning coil cavity can also be cleaned at the same time.

[0054] Finally, the rear ultraviolet lamp 108 and the front ultraviolet lamp 104 are turned on to start disinfection. After the disinfection is completed, the front ultraviolet lamp 104 and the rear ultraviolet lamp 108 are turned off, and the ultraviolet disinfection device for the magnetic resonance scanning coil cavity is withdrawn from the scanning coil cavity.

[0055] The technical features of the above embodiments may 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.

[0056] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An ultraviolet disinfection device for a magnetic resonance scanning coil cavity, characterized in that: It comprises a stand, the stand support is arranged on the ground, a support plate is rotatably provided on the stand, a support tube is provided at the center of the support plate, the support tube is located at 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, the rear ultraviolet lamp is used to disinfect the scanning coil cavity, the outside of the support tube is threadedly connected with N movable sleeves in sequence from the inside to the outside, N is an integer greater than 2, the support tube and the movable sleeve are both made of transparent materials, 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, 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, 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, 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, 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, the fourth internal thread cooperates with the third external thread, the fifth movable sleeve is provided with a fifth internal thread, the fifth internal thread cooperates with the fourth external thread, 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 in sequence, four support arms are provided on the support disk, the support arms extend along the radial direction of the support disk and can be telescopic, each support arm is provided with a guide rod extending in the front-to-back direction, 5 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, the telescopic rods correspond to the support arms one by one, and an intermediate gear is provided on the side of the telescopic rod close to the support tube, and A mounting frame 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 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, and the rear transmission gear is connected to the rear bevel gear through a connecting rod. The support cylinder and the first to fourth movable sleeves are all provided with a front bevel gear ring, and the front bevel gear ring is matched with the front bevel gear. The first to fourth movable sleeves are all provided with a transmission frame that slides forward and backward, and the transmission frame is provided with a rear Conical ring, the rear conical ring is connected to the rear bevel gear in a transmission manner, the transmission frame is also provided with a plurality of slide bars, the slide bars extend in the front-to-back direction, the first to fourth movable sleeves are provided with slide grooves, the slide bars slide in cooperation with the slide grooves, the rotation of the transmission frame can drive the movable sleeve to rotate, the fifth movable sleeve is connected with a limiting rod, 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. ; 2. The ultraviolet disinfection device for a magnetic resonance scanning coil cavity according to claim 1, 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.

3. The ultraviolet disinfection device for a magnetic resonance scanning coil cavity according to claim 2, 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.

4. 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.

5. 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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