Oral cavity CT shooting positioning mechanism

Abstract

The utility model discloses an oral cavity CT shooting positioning mechanism, and relates to the technical field of medical instruments, the oral cavity CT shooting positioning mechanism comprises an oral cavity CT machine, the outer wall of the bottom of the oral cavity CT machine is connected with a connecting frame in a sliding manner, the outer wall of the oral cavity CT machine is provided with an installation mechanism, the installation mechanism comprises a plurality of tooth-shaped limiting rod sleeves, and the tooth-shaped limiting rod sleeves are connected with the connecting frame in a sliding manner. A plurality of tooth-shaped limiting sliding grooves are formed in the inner wall of the end, close to the tooth-shaped limiting rod sleeve, of the oral cavity CT machine. When the device needs to be used and the whole connecting frame needs to be taken down to be replaced or maintained, the positioning rod with a certain length is pulled downwards to enable the tooth-shaped rotating rod to move downwards, and the tooth-shaped limiting sliding grooves are formed in the inner wall of the end, close to the tooth-shaped limiting rod sleeve, of the oral cavity CT machine. The positioning rod moves downwards to stretch the spring, then the positioning rod continues to be rotated by a half circle, and due to the fact that the positioning rod is meshed with the tooth-shaped rotating rod, rapid installation is achieved, tedious installation operation is not needed, the fixing mode is more convenient, the working time is effectively shortened, and meanwhile rapid disassembly can be achieved when equipment is replaced.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to an oral CT imaging positioning mechanism. Background Technology

[0002] Dental CT scans acquire data in a spiral pattern around a segment of the body. The fundamental difference between dental CT and conventional CT is that the former obtains three-dimensional information, while the latter obtains two-dimensional information. Dental CT improves scanning speed, provides a wider scanning coverage, and acquires volumetric data without gaps. To ensure the accuracy and stability of dental CT imaging, a positioning mechanism is required for the dental CT imaging device.

[0003] Existing equipment is inconvenient to install and fix during use, and the fixing method is relatively cumbersome. When users replace or maintain the device, it is inconvenient to disassemble it, resulting in low work efficiency. Therefore, we propose an oral CT imaging positioning mechanism. Utility Model Content

[0004] The purpose of this utility model is to provide an oral CT imaging positioning mechanism. By using a turntable, it solves the problems of existing equipment being inconvenient to install and fix the device during use, having a relatively cumbersome fixing method, and being inconvenient for users to disassemble when replacing or maintaining the device, resulting in low work efficiency.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a positioning mechanism for oral CT imaging, including an oral CT machine, a connecting frame slidably connected to the bottom outer wall of the oral CT machine, and an installation mechanism provided on the outer wall of the oral CT machine;

[0007] The installation mechanism includes several toothed limiting sleeves. The inner wall of the dental CT scanner near the toothed limiting sleeve has several toothed limiting grooves. The outer wall of the toothed limiting sleeve is slidably connected to the inner wall of the toothed limiting groove. A turntable is rotatably connected to the inner wall of the toothed limiting sleeve. The inner wall of the turntable has several arc-shaped grooves. A limiting block is slidably connected to the inner wall of each arc-shaped groove. The inner wall is slidably connected to the inner wall of the toothed limiting slide groove. A toothed rotating rod is fixedly connected to the bottom outer wall of the turntable. A positioning rod is rotatably connected to the outer wall of the toothed rotating rod. A spring is fixedly connected to the outer wall of the positioning rod near the toothed rotating rod. The outer wall of the spring is fixedly connected to the outer wall of the toothed limiting rod sleeve. Several positioning holes are opened on the inner wall of the dental CT machine near the positioning rod. The outer wall of the positioning rod is slidably connected to the inner wall of the positioning holes. A positioning mechanism is provided on the outer wall of the connecting frame.

[0008] Furthermore, the positioning mechanism includes an arc-shaped placement plate, the outer wall of which is fixedly connected to the outer wall of the connecting frame, and a rotating rod is rotatably connected to the inner wall of the arc-shaped placement plate near the toothed limiting groove.

[0009] Furthermore, a gear is fixedly connected to the outer wall of the end of the rotating rod closest to the arc-shaped placement plate, and a worm gear is fixedly connected to the outer wall of the end of the rotating rod furthest from the gear.

[0010] Furthermore, a worm is rotatably connected to the inner wall of the arc-shaped placement plate near the worm wheel, and the outer wall of the worm meshes with the outer wall of the worm wheel. Several racks are slidably connected to the outer wall of the arc-shaped placement plate, and the outer walls of the racks mesh with the outer walls of the gears.

[0011] Furthermore, the inner wall of the arc-shaped placement plate near the rack has several sliding grooves, and several clamping plates are slidably connected to the inner wall of the sliding grooves. The outer wall of the clamping plates is slidably connected to the outer wall of the rack.

[0012] Furthermore, a fixing seat is fixedly connected to the outer wall of the arc-shaped placement plate, and an engagement block is slidably connected to the inner wall of the fixing seat.

[0013] Furthermore, the inner wall of the biting block is provided with a plurality of positioning holes II, and a plurality of insert rods are slidably connected to the inner wall of the fixed seat near the positioning holes II, and the outer wall of the insert rods is slidably connected to the inner wall of the positioning holes II.

[0014] Furthermore, a spring is fixedly connected to the outer wall of the end of the insertion rod near the second positioning hole. The outer wall of the spring is fixedly connected to the inner wall of the fixing seat. Spring pads are fixedly connected to the outer walls of the arc-shaped placement plate and the clamping plate.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model incorporates a positioning rod. When the equipment needs to be used, and the connecting frame needs to be removed for replacement or maintenance, pulling down a certain length of the positioning rod causes the toothed rotating rod to move downwards. The downward movement of the positioning rod stretches the spring. Subsequently, the positioning rod is rotated half a turn. Because the positioning rod meshes with the toothed rotating rod, the rotation of the positioning rod drives the toothed rotating rod to rotate, ensuring that the positioning rod can only move vertically on the toothed rotating rod. This achieves rapid installation without the need for cumbersome installation operations, making the fixing method more convenient, improving work efficiency, effectively reducing working time, and allowing for quick disassembly when replacing equipment.

[0017] 2. This utility model incorporates a spring-loaded rubber pad. During use, the patient places their chin on the spring-loaded rubber pad on the arc-shaped placement plate and bites down on the occlusal block. Medical staff then rotate the worm gear, which in turn drives the worm wheel to rotate, causing the rotating rod to rotate. This rotation drives the gears, causing multiple racks to slide simultaneously and in opposite directions towards the center. The rack movement pulls the clamping plate within the second sliding groove, thus slightly clamping the patient's head to prevent movement and ensure proper positioning during oral CT scans. This prevents head movement from affecting the quality of subsequent CT images. Furthermore, the device's occlusal frame is easy to install and replace, preventing cross-infection caused by patients biting the same occlusal frame.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0022] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the toothed limiting rod sleeve of this utility model;

[0024] Figure 5 This is a cross-sectional view of the toothed rotating rod of this utility model;

[0025] Figure 6 This is a cross-sectional view of the positioning mechanism of this utility model;

[0026] Figure 7 This utility model Figure 6 Enlarged view of section B in the middle.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Oral CT scanner; 101. Connecting frame; 2. Mounting mechanism; 201. Toothed limiting slide groove; 202. Toothed limiting rod sleeve; 203. Slide groove; 204. Turntable; 205. Arc-shaped slide groove; 206. Limiting block; 207. Toothed rotating rod; 208. Spring; 209. Positioning hole; 210. Positioning rod; 3. Positioning mechanism; 301. Arc-shaped placement plate; 302. Rotating rod; 303. Gear; 304. Worm gear; 305. Worm; 306. Rack; 307. Slide groove two; 308. Clamping plate; 309. Fixing seat; 310. Biting block; 311. Positioning hole two; 312. Insert rod; 313. Spring two; 314. Spring pad. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-7 As shown, this utility model is a positioning mechanism for oral CT imaging, including an oral CT machine 1. The specific model of the oral CT machine 1 is Langshi SMART-3D, which has a unique anti-touch device, six laser indicator lines and other safety designs. It also provides convenient functions such as an embedded panoramic module and preset multiple scanning modes. A connecting frame 101 is slidably connected to the bottom outer wall of the oral CT machine 1. An installation mechanism 2 is provided on the outer wall of the oral CT machine 1. By installing the connecting frame 101 on the oral CT machine 1, it is convenient to place the patient's head on the connecting frame 101, which can suspend the patient's head and reduce the error of oral CT imaging.

[0031] The mounting mechanism 2 includes several toothed limiting sleeves 202. The inner wall of the end of the dental CT machine 1 near the toothed limiting sleeves 202 has several toothed limiting grooves 201. The outer wall of the toothed limiting sleeves 202 is slidably connected to the inner wall of the toothed limiting grooves 201. The engagement between the outer wall of the toothed limiting sleeves 202 and the inner wall of the toothed limiting grooves 201 prevents the toothed limiting sleeves 202 from rotating when fixed within the toothed limiting grooves 201. The inner wall of the end of the toothed limiting sleeves 202 near the dental CT machine 1 has several grooves 203. A turntable 204 is rotatably connected to the inner wall of the limiting rod sleeve 202. The inner wall of the turntable 204 has several arc-shaped grooves 205. The outer wall of each arc-shaped groove 205 is slidably connected to the outer wall of the limiting block 206. When the turntable 204 rotates, the limiting block 206 moves outward in an arc direction through the arc-shaped grooves 205. The inner wall of the arc-shaped groove 205 is slidably connected to the limiting block 206. The inner wall of the limiting block 206 is slidably connected to the inner wall of the toothed limiting groove 201. A toothed rotating rod 207 is fixedly connected to the bottom outer wall of the turntable 204. The outer wall of the toothed rotating rod 207 is fixedly connected to the outer wall of the limiting groove 202. The outer wall of the positioning rod 210 engages with the toothed rotating rod 207, which limits the movement trajectory of the positioning rod 210, ensuring that the positioning rod 210 can only move vertically on the toothed rotating rod 207. The positioning rod 210 is slidably connected to the outer wall of the toothed rotating rod 207. A spring 208 is fixedly connected to the outer wall of the positioning rod 210 near the toothed rotating rod 207. The outer wall of the spring 208 is fixedly connected to the outer wall of the toothed limiting rod sleeve 202. Through the spring 208, the spring 208 will always pull the positioning rod 210 tight due to its elastic force, keeping it locked in the positioning hole 209, preventing... To prevent the positioning rod 210 from rotating, the inner wall of the end of the dental CT machine 1 near the positioning rod 210 is provided with several positioning holes 209. The outer wall of the positioning rod 210 is slidably connected to the inner wall of the positioning hole 209. The outer wall of the connecting frame 101 is provided with a positioning mechanism 3. The inner wall of the positioning hole 209 is slidably connected to the outer wall of the positioning rod 210. By clamping the positioning rod 210 in the positioning rod 210, the position of the positioning rod 210 can be fixed, preventing the positioning rod 210 from rotating and causing the toothed rotating rod 207 to rotate, causing the toothed limiting rod sleeve 202 to fall out of the toothed limiting slide groove 201.

[0032] The positioning mechanism 3 includes an arc-shaped placement plate 301. The outer wall of the arc-shaped placement plate 301 is fixedly connected to the outer wall of the connecting frame 101. A rotating rod 302 is rotatably connected to the inner wall of the arc-shaped placement plate 301 near the toothed limiting slide groove 201. The outer wall of the rotating rod 302 is rotatably connected to the outer wall of the arc-shaped placement plate 301. When the rotating rod 302 rotates, it drives the gear 303 to rotate, causing the rack 306 to slide on the arc-shaped placement plate 301. The gear 303 is fixedly connected to the outer wall of the rotating rod 302 near the arc-shaped placement plate 301, and a worm gear 304 is fixedly connected to the outer wall of the rotating rod 302 away from the gear 303. The arc-shaped placement plate 301 is close to the worm gear 304. A worm 305 is rotatably connected to the inner wall of one end of the wheel 304. When the worm 305 is rotated, it meshes with the worm wheel 304, causing the worm wheel 304 to rotate and the rotating rod 302 to rotate. The rotating rod 302 then drives the gear 303 to rotate. The outer wall of the worm 305 meshes with the outer wall of the worm wheel 304. Several racks 306 are slidably connected to the outer wall of the arc-shaped placement plate 301. The outer walls of the racks 306 mesh with the outer walls of the gears 303. When the gear 303 rotates, it drives the racks 306 to move simultaneously and in opposite directions. The movement of the racks 306 causes the clamping plate 308 to slide within the second groove 307.

[0033] The inner wall of the arc-shaped placement plate 301 near the rack 306 has several sliding grooves 307. Several clamping plates 308 are slidably connected to the inner wall of the sliding grooves 307. The outer wall of the clamping plates 308 is slidably connected to the outer wall of the rack 306. When the clamping plates 308 clamp together, the patient's head can be fixed to prevent the patient's head from shaking and affecting the oral CT imaging. The outer wall of the arc-shaped placement plate 301 is fixedly connected to a fixing seat 309. The inner wall of the fixing seat 309 is slidably connected to a biting block 310. The inner wall of the biting block 310 has several positioning holes 311. When the insertion rod 312 is inserted into the positioning hole 311, the position of the biting block 310 can be fixed to prevent the biting block 310 from being overbitten by the patient. During the process, if the device shakes or falls off, several insert rods 312 are slidably connected to the inner wall of the end of the fixing base 309 near the second positioning hole 311. The outer wall of the insert rod 312 is slidably connected to the inner wall of the second positioning hole 311. A spring 313 is fixedly connected to the outer wall of the end of the insert rod 312 near the second positioning hole 311. The spring 313 will always squeeze the insert rod 312 due to its own elasticity, so that the insert rod 312 is always locked in the second positioning hole 311, preventing the biting block 310 from falling off by itself. The outer wall of the spring 313 is fixedly connected to the inner wall of the fixing base 309. Spring rubber pads 314 are fixedly connected to the outer walls of the arc-shaped placement plate 301 and the clamping plate 308. The spring rubber pads 314 can protect the patient's head and chin, preventing the patient's skin from being scratched when taking pictures of the patient.

[0034] One specific application of this embodiment is:

[0035] When staff need to use the equipment, the connecting frame 101 should be installed on the dental CT scanner 1 before use. When the connecting frame 101 needs to be removed for replacement or maintenance, pull down the positioning rod 210 by a certain length to move the toothed rotating rod 207 downward, so that the positioning rod 210 is completely disengaged from the positioning hole 209. The downward movement of the positioning rod 210 will stretch the spring 208. Then, continue to rotate the positioning rod 210 half a turn. Since the positioning rod 210 is engaged with the toothed rotating rod 207, the rotation of the positioning rod 210 will drive the toothed rotating rod 207 to rotate, and the positioning rod 210 can only move vertically on the toothed rotating rod 207. The rotation of the positioning rod 210 causes the toothed rotating rod 207 to rotate, making the turntable 204 rotate within the toothed limiting sleeve 202. The rotation of the turntable 204, through the arc-shaped slide groove 205, causes the limiting block 206 to move in an arc within the arc-shaped slide groove 205 and then retract inwards, causing the limiting block 206 to engage within the toothed limiting slide groove 201. The slide groove 203 on the toothed limiting sleeve 202 corrects the arc-shaped movement of the limiting block 206 into a linear movement. Once the limiting block 206 is completely disengaged from the toothed limiting slide groove 201, the user can then remove the connecting frame 101 as a whole. During the fixing process of the connecting frame 101, the spring... 208, due to its own elasticity, will cause the positioning rod 210 to return to its original position and lock into the positioning hole 209, fixing the position of the positioning rod 210 and preventing the positioning rod 210 from rotating and causing the toothed limiting rod sleeve 202 to fall out of the toothed limiting slide groove 201. The patient places their chin on the spring pad 314 on the arc-shaped placement plate 301 and bites down on the occlusal block 310. Then, the medical staff rotates the worm gear 305. The rotation of the worm gear 305 will drive the worm wheel 304 to rotate, causing the rotating rod 302 to rotate. The rotation of the rotating rod 302 will drive the gear 303 to rotate, causing multiple racks 306 to slide simultaneously and in opposite directions toward the center. The movement of the racks 306 will pull... The splint 308 slides within the second groove 307, thus slightly clamping the patient's head to prevent the patient from shaking and affecting the oral CT scan. After the scan is completed, the medical staff simultaneously pulls out multiple inserts 312 to disengage them from the second positioning hole 311. At this time, the user can remove the bite block 310 for replacement to prevent different patients from biting the same bite block 310 at the same time, which could lead to cross-infection. During the process of the inserts 312 fixing the bite block 310, the second spring 313 will always press against the inserts 312 due to its own elasticity, keeping them locked in the second positioning hole 311 to prevent the inserts 312 from disengaging and causing the bite block 310 to fall off.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An oral CT photograph positioning mechanism comprising an oral CT machine (1), characterized in that: The bottom outer wall of the oral CT machine (1) is slidably connected with a connecting frame (101), and the outer wall of the oral CT machine (1) is provided with a mounting mechanism (2). The mounting mechanism (2) comprises a plurality of tooth-shaped limiting rod sleeves (202), the inner wall of one end of the oral CT machine (1) close to the tooth-shaped limiting rod sleeve (202) is provided with a plurality of tooth-shaped limiting sliding grooves (201), the outer wall of the tooth-shaped limiting rod sleeve (202) is slidably connected with the inner wall of the tooth-shaped limiting sliding groove (201), the inner wall of one end of the tooth-shaped limiting rod sleeve (202) close to the oral CT machine (1) is provided with a plurality of sliding grooves (203), the inner wall of the tooth-shaped limiting rod sleeve (202) is rotatably connected with a rotating disc (204), the inner wall of the rotating disc (204) is provided with a plurality of arc-shaped sliding grooves (205), the inner wall of the arc-shaped sliding groove (205) is slidably connected with a limiting block (206), the inner wall of the limiting block (206) is slidably connected with the inner wall of the tooth-shaped limiting sliding groove (201), the bottom outer wall of the rotating disc (204) is fixedly connected with a tooth-shaped rotating rod (207), the outer wall of the tooth-shaped rotating rod (207) is slidably connected with a positioning rod (210), the outer wall of one end of the positioning rod (210) close to the tooth-shaped rotating rod (207) is fixedly connected with a spring (208), the outer wall of the spring (208) is fixedly connected with the outer wall of the tooth-shaped limiting rod sleeve (202), the inner wall of one end of the oral CT machine (1) close to the positioning rod (210) is provided with a plurality of positioning holes (209), the outer wall of the positioning rod (210) is slidably connected with the inner wall of the positioning hole (209), and the outer wall of the connecting frame (101) is provided with a positioning mechanism (3).

2. The oral CT photograph positioning mechanism according to claim 1, wherein The positioning mechanism (3) comprises an arc-shaped placing plate (301), and the outer wall of the arc-shaped placing plate (301) is fixedly connected with the outer wall of the connecting frame (101).

3. The oral CT photograph positioning mechanism according to claim 2, wherein The outer wall of one end of the rotating rod (302) close to the arc-shaped placing plate (301) is fixedly connected with a gear (303), and the outer wall of the other end of the rotating rod (302) away from the gear (303) is fixedly connected with a worm wheel (304).

4. The oral CT photograph positioning mechanism according to claim 3, wherein The inner wall of one end of the arc-shaped placing plate (301) close to the worm wheel (304) is rotatably connected with a worm (305), the outer wall of the worm (305) is engaged with the outer wall of the worm wheel (304), and the outer wall of the arc-shaped placing plate (301) is slidably connected with a plurality of racks (306).

5. The oral CT photograph positioning mechanism according to claim 4, wherein The inner wall of one end of the arc-shaped placing plate (301) close to the rack (306) is provided with a plurality of sliding grooves (307), the inner wall of the sliding groove (307) is slidably connected with a plurality of clamping plates (308), and the outer wall of the clamping plate (308) is slidably connected with the outer wall of the rack (306).

6. The oral CT photograph positioning mechanism according to claim 5, wherein The outer wall of the arc-shaped placement plate (301) is fixedly connected with a fixing seat (309), and the inner wall of the fixing seat (309) is slidably connected with a clamping block (310).

7. The oral CT photograph positioning mechanism according to claim 6, wherein A plurality of positioning holes two (311) are formed in the inner wall of the clamping block (310), a plurality of insertion rods (312) are slidably connected to the inner wall of one end of the fixing seat (309) close to the positioning holes two (311), and the outer wall of the insertion rod (312) is slidably connected with the inner wall of the positioning hole two (311).

8. The oral CT photograph positioning mechanism according to claim 7, wherein A spring two (313) is fixedly connected to the outer wall of one end of the insertion rod (312) close to the positioning hole two (311), the outer wall of the spring two (313) is fixedly connected with the inner wall of the fixing seat (309), and the outer walls of the arc-shaped placement plate (301) and the clamping plate (308) are fixedly connected with spring rubber pads (314).

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