Cross-infection preventing automatic replacement device for oral cavity DR dental film
By designing an automatic replacement and transmission component for dental DR film to prevent cross-infection, the problem of secondary contamination of protective materials and low efficiency of manual replacement is solved, achieving efficient automatic replacement and sealing, and reducing the risk of cross-infection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LANZHOU UNIV STOMATOLOGICAL HOSPITAL
- Filing Date
- 2025-04-30
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, there are problems such as cross-infection, secondary contamination of protective materials, and low efficiency of manual replacement during DR dental X-ray imaging.
A device comprising a main body box, a sealing ring, an automatic replacement component, and a transmission component is designed. Through the cooperation of the automatic replacement component and the transmission component, the disposable protective bag can be automatically replaced and sealed to prevent external contamination.
It prevents external bacterial contamination during storage, improves the efficiency of replacing protective materials, and reduces the risk of cross-infection and resource waste.
Smart Images
Figure CN224540232U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dental DR radiography technology, specifically to an automatic replacement device for dental DR radiography to prevent cross-infection. Background Technology
[0002] To address the issue of cross-infection prevention during DR dental X-ray imaging, clinical practice currently primarily uses thin-film gloves or disposable thin-film bags as protective materials. While these traditional methods can prevent sensor contamination and cross-infection to some extent, the insufficient sealing of traditional protective materials during storage can lead to secondary contamination by external bacteria. Furthermore, the need for medical staff to manually change protective materials after each imaging session not only increases the chance of cross-infection but also reduces work efficiency and wastes resources.
[0003] Therefore, it is necessary to invent an automatic replacement device for dental DR films to prevent cross-infection and solve the above problems. Utility Model Content
[0004] This invention addresses the aforementioned problems by providing an automatic replacement device for dental DR films to prevent cross-infection, thus solving the problem of secondary contamination of protective materials by external pollutants during storage.
[0005] The technical solution adopted by this utility model is as follows: it includes a main body box, a sealing ring, an automatic replacement component, a transmission component, and an insert; the upper and lower side walls of the main body box are respectively provided with an inlet and an outlet, and the inlet and outlet are arranged facing each other; the sealing ring is sealed and slidably disposed on the outer side wall of the main body box; the automatic replacement component is disposed inside the main body box; the transmission component is disposed on the side wall of the main body box; and the insert is detachably installed inside the main body box.
[0006] Furthermore, as a preferred embodiment, the automatic replacement assembly includes an inlet cylinder, an outlet cylinder, a feed wheel, a take-up wheel, and a disposable protective bag; the inlet cylinder is fixed to the upper inner wall of the main body box and communicates with the inlet; the outlet cylinder is fixed to the lower inner wall of the main body box and communicates with the outlet; a clearance gap is configured between the outlet cylinder and the inlet cylinder; the feed wheel is located on the left side of the clearance gap, and both ends of the feed wheel are rotatably mounted inside the two side walls of the main body box; the take-up wheel is located on the right side of the clearance gap, and both ends of the take-up wheel are rotatably mounted inside the two side walls of the main body box; one end of the disposable protective bag is wound around the feed wheel, and the other end is wound around the take-up wheel, and the disposable protective bag passes through the clearance gap.
[0007] Furthermore, as a preferred embodiment, the transmission assembly includes a pawl, a ratchet, a gear, a knob, a first magnetic block, a return spring, a second magnetic block, and a rack; the pawl is connected to the winding wheel by a torsion spring; the ratchet is rotatably mounted inside the side wall of the main body box, and the ratchet meshes with the pawl; the gear is fixed to the ratchet; an arc-shaped groove is formed on the side wall of the main body box; the knob is fixed to the side wall of the gear, and the knob passes through and slides within the arc-shaped groove; a sliding groove is formed on the upper outer wall of the main body box; the first magnetic block is fixed to the upper inner wall of the sealing ring, and the first magnetic block slides within the first sliding groove; the return spring is connected between the first magnetic block and the inner wall of the first sliding groove; a second sliding groove is formed on the upper inner wall of the main body box, and the second magnetic block slides within the second sliding groove; the rack is fixed to the lower end of the second magnetic block, and the rack meshes with the gear; the first magnetic block and the second magnetic block are opposite magnetic poles on opposite sides.
[0008] Furthermore, as a preferred embodiment, the insert includes a firing pin and a pressing plate; the side wall of the inlet cylinder has multiple through holes, and multiple firing pins are configured to be detachably slidably disposed through the multiple through holes, and the pressing plate is fixed to the upper end of the multiple firing pins.
[0009] Advantages of this utility model: By using automatic replacement and transmission components, it is possible to ensure that the disposable protective bag inside the main box is isolated from the outside world during storage, thereby preventing external bacteria from contaminating the disposable protective bag; moreover, the disposable protective bag can be replaced while the sealing ring is moving, thus improving the efficiency of sensor protective bag replacement.
[0010] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description
[0011] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the automatic replacement component structure of this utility model; Figure 3 This is an enlarged view of point A of this utility model; Figure 4 This is a schematic diagram of the transmission component structure of this utility model; Figure 5 This is a schematic diagram showing the connection relationship between the sealing ring and the magnetic block of this utility model; Figure 6 This is a schematic diagram of the rack position distribution of this utility model; Figure 7 This is a schematic diagram showing the connection relationship between the rack and the magnetic block of this utility model.
[0013] Reference numerals: 1. Main body box; 2. Sealing ring; 3. Automatic replacement component; 4. Transmission component; 5. Insert; 31. Inlet cylinder; 32. Outlet cylinder; 33. Feed wheel; 34. Rewinding wheel; 35. Disposable protective bag; 36. Clearance clearance; 41. Pawl; 42. Ratchet; 43. Gear; 44. Knob; 45. Magnetic block one; 46. Return spring; 47. Magnetic block two; 48. Rack; 11. Arc groove; 12. Slide groove one; 13. Slide groove two; 51. Impact pin; 52. Pressing plate; 311. Perforation. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0016] refer to Figures 1 to 7 An automatic replacement device for preventing cross-infection of dental DR radiographs includes a main body box 1, a sealing ring 2, an automatic replacement component 3, a transmission component 4, and an insert 5. The main body box 1 has an inlet and an outlet on its upper and lower side walls, respectively, and the inlet and outlet are arranged opposite each other. The sealing ring 2 is sealed and slidably disposed on the outer side wall of the main body box 1. The automatic replacement component 3 is disposed inside the main body box 1. The transmission component 4 is disposed on the side wall of the main body box 1. The insert 5 is detachably installed inside the main body box 1.
[0017] In one embodiment of this utility model, the automatic replacement component 3 includes an inlet cylinder 31, an outlet cylinder 32, a feed wheel 33, a take-up wheel 34, and a disposable protective bag 35. The inlet cylinder 31 is fixed on the upper inner wall of the main body box 1 and is connected to the inlet. The outlet cylinder 32 is fixed on the lower inner wall of the main body box 1 and is connected to the outlet. A clearance gap 36 is configured between the outlet cylinder 32 and the inlet cylinder 31. The feed wheel 33 is located on the left side of the clearance gap 36, and both ends of the feed wheel 33 are rotatably mounted inside the two side walls of the main body box 1. The take-up wheel 34 is located on the right side of the clearance gap 36, and both ends of the take-up wheel 34 are rotatably mounted inside the two side walls of the main body box 1. One end of the disposable protective bag 35 is wound around the feed wheel 33, and the other end is wound around the take-up wheel 34. The disposable protective bag 35 passes through the clearance gap 36.
[0018] Please note that you should refer to [link / reference]. Figure 2 The width of the disposable protective bag 35 exceeds the width of the clearance 36.
[0019] In other words, when the take-up wheel 34 rotates, it can take up the disposable protective bag 35, so the disposable protective bag 35 placed between the inlet tube 31 and the outlet tube 32 can be replaced as the take-up wheel 34 rotates.
[0020] In one embodiment of this utility model, the transmission assembly 4 includes a pawl 41, a ratchet 42, a gear 43, a knob 44, a first magnet 45, a return spring 46, a second magnet 47, and a rack 48. The pawl 41 is connected to the winding wheel 34 by a torsion spring. The ratchet 42 is rotatably mounted inside the side wall of the main body box 1, and the ratchet 42 meshes with the pawl 41. The gear 43 is fixed to the ratchet 42. An arc-shaped groove 11 is provided on the side wall of the main body box 1. The knob 44 is fixed to the side wall of the gear 43, and the knob 44 passes through and slides on the arc-shaped groove. Inside groove 11, a sliding groove 12 is provided on the upper outer wall of the main body box 1. The magnetic block 45 is fixed on the upper inner wall of the sealing ring 2 and is slidably disposed in the sliding groove 12. The reset spring 46 is connected between the magnetic block 45 and the inner wall of the sliding groove 12. A sliding groove 13 is provided on the upper inner wall of the main body box 1. The magnetic block 47 is slidably disposed in the sliding groove 13. The rack 48 is fixed on the lower end of the magnetic block 47 and meshes with the gear 43. The magnetic block 45 and the magnetic block 47 are opposite magnetic poles on one side of each other.
[0021] Please refer to [link / reference needed] for further explanation. Figure 2 , Figure 3 and Figure 5When the knob 44 is manually turned clockwise, the knob 44 will drive the gear 43 and ratchet 42 to rotate clockwise at a certain angle. During this process, the ratchet 42 and the pawl 41 are engaged, so the ratchet 42 will drive the pawl 41 to rotate. Therefore, the winding wheel 34 will rotate clockwise, and when the winding wheel 34 rotates clockwise, it can wind up the disposable protective bag 35. At the same time, the gear 43 will mesh with the rack 48, thereby driving the rack 48 and the second magnetic block 47 to move horizontally. There is always a magnetic attraction between the second magnetic block 47 and the first magnetic block 45, so the first magnetic block 45 can move synchronously with the second magnetic block 47. In turn, the second magnetic block 47 can drive the sealing ring 2 to move, so that the inlet and outlet of the main body box 1 are opened at the same time. At this time, the return spring 46 is in an energy storage state. After releasing knob 44, the elastic force of reset spring 46 will drive sealing ring 2 to move to the initial position and seal the inlet and outlet of main body box 1 again, preventing external pollution sources from entering the main body box 1 and contaminating disposable protective bag 35. During the reset process of sealing ring 2, magnetic block 2 47 will drive magnetic block 1 45 to move synchronously through magnetic force, so that rack 48 will move to the initial position. When rack 48 moves, it will mesh with gear 43 and drive gear 43 to rotate counterclockwise. When gear 43 rotates counterclockwise, ratchet 42 and pawl 41 are in a non-meshing state, that is, ratchet 42 rotates freely around winding wheel 34, and winding wheel 34 remains stationary. Therefore, winding wheel 34 can only rotate clockwise, thereby ensuring that disposable protective bag 35 is in a stretched state and facilitating cyclic winding.
[0022] In one embodiment of the present invention, the insert 5 includes a striking pin 51 and a pressing plate 52; a plurality of through holes 311 are provided in the side wall of the inlet cylinder 31, and a plurality of striking pins 51 are provided, which are detachably and slidably disposed in the plurality of through holes 311, and the pressing plate 52 is fixed to the upper end of the plurality of striking pins 51.
[0023] It should be explained that multiple impact pins 51 can squeeze and penetrate the disposable protective bag 35 located in the clearance gap 36, so that a fracture zone is formed in the center of the disposable protective bag 35 located in the clearance gap 36, preventing the disposable protective bag 35 from completely breaking when the sensor is replaced, so as to ensure the integrity around the fracture zone.
[0024] Specifically, during implementation, initially, the sealing ring 2 seals the inlet and outlet of the main body box 1, keeping the entire main body box 1 in a closed state. When it is necessary to replace the sensor protective bag, the staff first installs the device next to the sensor in the shooting room. Then, manually turning the knob 44 can move the sealing ring 2. At the same time, the disposable protective bag 35 in the clearance gap 36 is replaced. Then, multiple impact pins 51 are aligned with multiple perforations 311, and the pressing plate 52 is pushed to create a fracture zone in the disposable protective bag 35 in the clearance gap 36. Then, the insert 5 is removed, and the sensor is inserted from the inlet. After squeezing the sensor to complete the replacement of the protective bag, the sensor is taken out from the outlet. Then, the knob 44 is released, and the sealing ring 2 seals the inlet and outlet of the main body box 1 again, thus completing one replacement operation.
[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An automatic replacement device for dental DR films to prevent cross-infection, characterized in that, It includes a main body box (1), a sealing ring (2), an automatic replacement component (3), a transmission component (4), and an insert (5); the main body box (1) has an inlet and an outlet on its upper and lower side walls respectively, and the inlet and outlet are arranged opposite each other; the sealing ring (2) is sealed and slidably disposed on the outer side wall of the main body box (1); the automatic replacement component (3) is disposed inside the main body box (1); the transmission component (4) is disposed on the side wall of the main body box (1); and the insert (5) is detachably installed inside the main body box (1).
2. The automatic replacement device for preventing cross-infection of dental DR radiographs according to claim 1, characterized in that, The automatic replacement component (3) includes an inlet cylinder (31), an outlet cylinder (32), a feed wheel (33), a take-up wheel (34), and a disposable protective bag (35); the inlet cylinder (31) is fixed on the upper inner wall of the main body box (1) and is connected to the inlet; the outlet cylinder (32) is fixed on the lower inner wall of the main body box (1) and is connected to the outlet; a clearance gap (36) is configured between the outlet cylinder (32) and the inlet cylinder (31); the feed wheel (33) is connected to the inlet cylinder (34), and the feed wheel (35) is connected to the outlet. The feed wheel (33) is located on the left side of the clearance gap (36), and the two ends of the feed wheel (33) are rotatably mounted inside the two side walls of the main body box (1). The take-up wheel (34) is located on the right side of the clearance gap (36), and the two ends of the take-up wheel (34) are rotatably mounted inside the two side walls of the main body box (1). One end of the disposable protective bag (35) is wrapped around the feed wheel (33), and the other end is wrapped around the take-up wheel (34). The disposable protective bag (35) passes through the clearance gap (36).
3. The automatic replacement device for preventing cross-infection of dental DR films according to claim 2, characterized in that, The transmission assembly (4) includes a pawl (41), a ratchet (42), a gear (43), a knob (44), a first magnet (45), a return spring (46), a second magnet (47), and a rack (48). The pawl (41) is connected to the winding wheel (34) by a torsion spring. The ratchet (42) is mounted and rotatably disposed inside the side wall of the main body box (1), and the ratchet (42) meshes with the pawl (41). The gear (43) is fixed on the ratchet (42). An arc-shaped groove (11) is provided on the side wall of the main body box (1). The knob (44) is fixed on the side wall of the gear (43), and the knob (44) passes through and slides in the arc-shaped groove (11). Inside the main body box (1), a sliding groove (12) is provided on the upper outer wall. The magnetic block (45) is fixed on the upper inner wall of the sealing ring (2) and the magnetic block (45) is slidably disposed in the sliding groove (12). The reset spring (46) is connected between the magnetic block (45) and the inner wall of the sliding groove (12). A sliding groove (13) is provided on the upper inner wall of the main body box (1). The magnetic block (47) is slidably disposed in the sliding groove (13). The rack (48) is fixed at the lower end of the magnetic block (47) and the rack (48) meshes with the gear (43). The magnetic block (45) and the magnetic block (47) are opposite magnetic poles on one side of each other.
4. The automatic replacement device for preventing cross-infection of dental DR radiographs according to claim 2, characterized in that, The insert (5) includes a firing pin (51) and a pressing plate (52); the side wall of the inlet tube (31) is provided with multiple through holes (311), and multiple firing pins (51) are provided, which are detachably slidably disposed in the multiple through holes (311). The pressing plate (52) is fixed to the upper end of the multiple firing pins (51).