Mouth rehabilitation space measuring device and use method

Abstract

The invention discloses an oral cavity restoration space measuring device and a use method, and relates to the technical field of medical instruments in the department of stomatology, the oral cavity restoration space measuring device comprises a shell, an anterior tooth fixing assembly for fixing the device in the oral cavity of a patient is arranged in the shell, and a composite measuring assembly for measuring the oral cavity restoration space is arranged at one end of the shell; a plurality of positioning plates are pushed out by liquid through occlusion of a water bag in a fixing groove, so that the device is fixed relative to anterior teeth, the overall length of the composite measuring assembly is adjusted through an electric telescopic piece, and according to tooth data needing to be measured, a rotating handle is rotated to switch the measuring component between a vertical state and a horizontal state of the shell, so that the measurement accuracy is improved. The depth of a cavity in the tooth is measured through the measuring component which is in a vertical state with the shell, the width of the tooth is measured through the measuring component which is kept in a horizontal state with the shell, and measured data are read through the display screen; the device has the advantages of being accurate in measurement result and convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of oral medical instruments, and in particular to an oral restoration space measuring device and a use method thereof. Background Art

[0002] As people's living standards improve, the requirements for oral health and aesthetics are increasing, and the importance of oral restoration in clinical treatment is becoming more and more prominent. In the field of oral restoration, accurate measurement of the restoration space is crucial for formulating appropriate treatment plans and selecting appropriate restoration materials and methods. For example, different restoration plans, such as veneer restoration, full crown restoration, inlay restoration, etc., have different requirements for the size of the restoration space after tooth preparation.

[0003] The measurement of oral restoration space mainly includes the measurement of tooth size and the measurement of cavity depth after caries preparation. Due to the narrow oral environment and the structural characteristics of the human face, the spatial measurement of the posterior molar part will be blocked to a certain extent, which in turn affects the normal measurement of oral restoration space. Measurement using general measuring tools will result in measurement difficulties and low measurement accuracy.

[0004] Existing oral restoration space measurement devices, such as the oral restoration space measurement device and method provided by publication number CN112656534A, include a rigidly connected depth measuring rod and a main ruler, which are driven by a gear rack meshing method. The gripping end and the measuring end can be connected at a certain angle, enabling measurement of some parts that traditional oral measurement rulers cannot reach in the narrow space of the oral cavity, thereby reducing the measurement blind spot; a digital display is used to display the measurement results in digital form on the display screen, avoiding human subjective errors when reading the values visually; a detachable first and second measuring jaws are used to integrate depth measurement, width and length measurement, facilitating cleaning, disinfection and recycling of parts that come into contact with the patient's mouth after use; however, since this application requires the measurement jaws to be removed or installed during use to switch between measuring tooth size and tooth cavity depth, it is inconvenient to use in actual use, affecting measurement efficiency. Summary of the Invention

[0005] In response to the above-mentioned problems, the present invention aims to provide an oral restoration space measurement device, which designs an anterior teeth fixing component, and fixes the anterior teeth in position by pushing multiple positioning plates through the upper and lower fixing grooves of the anterior teeth occlusion through the water pressure. By designing a composite measuring component, it is manually rotated and adjusted according to the different needs of measuring tooth width or tooth cavity depth. The measuring component with adjustable length is attached to the area to be measured in the posterior tooth area, and the rotation distance of each first driving member is converted into directly readable data through the principle of a rangefinder to determine the tooth width or tooth cavity depth, thereby completing the oral restoration space measurement, which has the advantages of accurate measurement results and easy use.

[0006] The main idea of the technical solution adopted by the present invention is: to design a front teeth fixing component, through the occlusal fixing groove, squeeze the liquid in the water bag to transport it to the water pipes on both sides of the fixing groove, and push out the positioning plate to fit the front teeth to fix the measuring device relative to the front teeth; to design a composite measuring component, through the vertically arranged measuring component to adjust to the area to be measured, and through the first driving member to drive the measuring component to move linearly until it contacts the bottom of the tooth cavity, or rotate the measuring component horizontally, and drive the clamping component at one end of the measuring component to clamp the two sides of the teeth in the posterior tooth area, and convert the rotation distance of the power shaft of the first driving member into linear distance data through the encoder, and transmit it to the display screen for reading.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows: An oral restoration space measuring device comprises a shell, wherein the upper and lower sides of the shell are both provided with anterior tooth fixing components for fixing the device to the anterior teeth, and one end of the shell is provided with a composite measuring component for measuring the oral restoration space.

[0008] The anterior teeth fixing component includes support members rotatably arranged on the upper and lower sides of the shell, and each of the support members is fixed with a fixing groove at the end away from the shell, and a water bag is fixed on the fixing groove. A plurality of water pipes connected to the water bag are symmetrically provided on both sides of the fixing groove, and a positioning plate is slidably arranged on the end of the water pipe away from the end connected to the water bag. A reset elastic member is also provided in the water pipe for facilitating the reset of the positioning plate; when the patient bites the upper and lower anterior teeth into the fixing groove, the liquid in the water bag can be squeezed into each water pipe, and the positioning plate can be pushed out in the direction away from the water pipe until the multiple positioning plates on the upper and lower sides are in contact with the teeth in the upper and lower anterior tooth areas. The device is considered to be relatively fixed to the anterior teeth, and the shell can be rotated relative to the support member so that the composite measurement component can be rotated and adjusted to fit the area to be measured inside the oral cavity.

[0009] The composite measuring assembly includes a connecting shaft slidably arranged at one end of a shell, an electric telescopic member fixedly connected to the end of the connecting shaft located inside the shell is arranged inside the shell, a rotating handle passing through the shell is fixed on the electric telescopic member, and a measuring member is slidably arranged on the end of the connecting shaft located outside the shell; the connecting shaft is linearly adjusted by the electric telescopic member to adjust the distance by which the measuring member is extended inside the oral cavity, and the rotating handle is rotated to drive the electric telescopic member and the connecting shaft to rotate and adjust, so that the measuring member is adjusted to a state perpendicular to the shell or horizontal to the shell, so as to select to measure the depth of the tooth cavity or the width of the tooth.

[0010] The measuring component includes a measuring rod slidably arranged on a connecting shaft, and a first driving member is fixed on the connecting shaft and near the sliding connection with the measuring rod. The first driving member is used to drive the measuring rod to move linearly relative to the connecting shaft, and a positioning ring is also provided on the connecting shaft; the measuring rod is driven to move linearly along the connecting shaft by the first driving member, and when the measuring rod is relatively perpendicular to the shell, the bottom end of the measuring rod is adjusted to be flush with the positioning ring on the connecting shaft by the first driving member, and the adjustment shell is rotated to make the bottom surface of the positioning ring contact with the occlusal surface of the tooth, and the measuring rod is driven into the tooth cavity by the first driving member until the bottom end of the measuring rod contacts the bottom of the tooth cavity. At this time, the distance that the driving shaft of the first driving member rotates is the depth of the tooth cavity to be measured.

[0011] Based on the above technical solution, further, the measuring rod is provided with a first adjustment rack, and the driving shaft of the first driving member is provided with a driving adjustment gear meshing with the first adjustment rack; The measuring component also includes a first adjusting shaft slidably arranged in the measuring rod, a first adjusting block is provided on both sides of the bottom of the first adjusting shaft, and a first adjusting gear is rotatably arranged at the bottom of the measuring rod, and a hollow gear shaft is provided on the first adjusting gear that penetrates into the measuring rod, and the inner end surface of the hollow gear shaft is provided with a first adjusting spiral groove that cooperates with the first adjusting block, and the bottom of the measuring rod is provided with two clamping parts that are rotated by the hinge shaft, and a second adjusting gear that meshes with the first adjusting gear is provided on the hinge shaft of each clamping part; when the first adjusting shaft moves linearly along the measuring rod, it can cooperate with the first adjusting spiral groove on the hollow gear shaft through the first adjusting block at the bottom to rotate the first adjusting gear, thereby driving the second adjusting gear meshed with it to rotate, and rotating the two clamping parts from the inner area of the measuring rod cross section to the outer side, so as to cooperate with the clamping part through the positioning ring to clamp the two sides of the tooth. At this time, the distance that the driving shaft of the first driving part rotates is the width of the tooth to be measured.

[0012] The cam is secured to the first and second adjustment shafts and is adapted to engage with the first gear when the cam is engaged with the first gear and to engage with the first gear when the cam is engaged with the first gear. A limit member is provided on the top of the measuring rod for limiting the moving distance of the first adjusting shaft; the adjusting gear shaft and the second adjusting gear are driven to rotate by the second driving member, and the second adjusting rack is driven to move, so as to realize the linear movement of the first adjusting shaft along the measuring rod. When the adjusting gear shaft rotates, the second adjusting block and the second adjusting spiral groove cooperate to make the second adjusting gear move in the direction close to the adjusting gear shaft until the second adjusting gear is disengaged from the second adjusting rack. At this time, the two clamping members at the bottom of the measuring rod are completely rotated out, and the drive of the second driving member no longer moves the first adjusting shaft, and thus no longer rotates the two clamping members, so that the positioning ring is clamped on both sides of the clamping member teeth.

[0013] The shell is also provided with a display screen, and the connecting shaft is provided with a micro encoder for detecting the rotation distance of the driving shaft of the first driving member. The micro encoder can convert the rotation distance of the driving shaft into a linear distance and transmit it to the display screen. The linear distance obtained by the conversion is the width of the tooth to be measured or the depth of the tooth cavity.

[0014] A method for using an oral restoration space measuring device comprises the following steps: S1. Rotate the handle to adjust the measuring member according to the type of oral restoration space data to be measured. After adjustment, the patient bites the anterior teeth fixed assembly, adjusts the length of the connecting shaft using the electric telescopic member, and rotates the adjustment housing to bring the measuring member as close as possible to the position of the tooth to be measured; S2. Measure the tooth cavity depth using a measuring member perpendicular to the housing. Control the first driving member to linearly adjust the measuring rod along the connecting shaft until the bottom of the measuring rod and the positioning ring at the bottom of the connecting shaft are on the same horizontal plane. Fit the positioning ring to the occlusal surface of the tooth to be measured. Activate the first driving member to push the measuring rod out of the connecting shaft until the bottom of the measuring rod contacts the bottom of the tooth cavity. Observe the data on the display screen to obtain the tooth cavity depth. S3. Use a measuring component parallel to the shell to measure the tooth width, control the second driving member to move the first adjustment axis in a straight line along the measuring rod, and then rotate the two clamping parts out from the inner area of the measuring rod cross section, and place the positioning ring and the clamping part on both sides of the tooth to be measured, respectively, control the first driving member to adjust the measuring rod in a straight line along the connecting axis until the positioning ring and the clamping part clamp the two sides of the tooth, and calculate the tooth width by observing the data on the display screen.

[0015] In step S2, when the bottom of the measuring rod and the positioning ring at the bottom of the connecting shaft are located at the same horizontal plane, the data on the display screen is reset to zero. When the bottom of the measuring rod contacts the bottom of the tooth cavity, the data on the display screen is the depth data of the tooth cavity.

[0016] In step S3, when the positioning ring and the clamping piece are respectively at any positions on both sides of the tooth to be measured, the data on the display screen at this time is recorded and the data on the display screen is reset to zero. When the positioning ring and the clamping piece clamp the two sides of the tooth, the data recorded for the first time is subtracted from the data displayed again on the display screen, which is the tooth width data.

[0017] The beneficial effects of the present invention are: First, the present invention provides a composite measuring assembly, wherein a first driving member drives a measuring rod to move along a connecting shaft until the bottom of the measuring rod contacts the bottom of a tooth cavity, thereby measuring the depth of the tooth cavity. Furthermore, when the clamping member is rotated out / expanded, the two sides of the tooth are clamped together by a positioning ring and the clamping member, thereby measuring the tooth width. The first driving member drives the measuring rod to be precisely adjusted, and a micro encoder is used to obtain the rotation distance of the driving shaft of the first driving member, which is converted into linear distance data and displayed on a display screen for easy reading by medical personnel. This method has extremely high measurement accuracy, which gives the present invention the advantage of accurate measurement results. Secondly, by providing a rotating handle so that the measuring member can be rotated and adjusted relative to the shell, the measuring member can measure the depth of the tooth cavity when it is relatively vertical to the shell, or can measure the tooth width when the measuring member and the shell are located in the same horizontal plane. In actual use, the entire device can be turned upside down to measure the upper teeth or lower teeth respectively. Compared with existing devices that require installation or disassembly of the measuring mechanism, the present invention has the advantage of being easy to use, thereby improving measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention in which the measuring member is in a vertical state; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention in which the measuring member is in a horizontal state; Figure 3 Schematic diagram of the three-dimensional structure of the anterior teeth fixed component; Figure 4 A sectional view of the internal three-dimensional structure of the anterior teeth fixing assembly; Figure 5 Schematic diagram of the three-dimensional structure inside the shell; Figure 6 for Figure 5 An enlarged detail at point A; Figure 7 for Figure 5 An enlarged detail at point B; Figure 8 for Figure 7 A further enlarged detail view at C; Figure 9 Schematic diagram of the three-dimensional structure at the connecting shaft; Figure 10 for Figure 9 Enlarged local detail at D; Figure 11 for Figure 9 Enlarged detail at E; Figure 12 Schematic diagram of the three-dimensional structure of the measuring component; Figure 13 is a schematic diagram of the three-dimensional structure at the first adjustment axis; Figure 14 This is a schematic diagram of the three-dimensional structure installation at the bottom of the measuring rod; Figure 15 This is a schematic diagram of the modeling of the positioning parts; Figure 16 This is a schematic diagram of the modeling of the adjusting gear shaft.

[0019] Wherein: 1. Housing; 101. Turning handle slot; 102. First positioning hole; 103. Second positioning hole; 2. Anterior tooth fixing assembly; 201. Support member; 202. Fixing slot; 203. Water bag; 204. Water pipe; 205. Positioning plate; 206. Reset elastic member; 3. Composite measuring assembly; 301. Connecting shaft; 3011. Positioning ring; 302. Electric telescopic member; 303. Turning handle; 3031. First positioning block; 3032. Second positioning block; 3033. Turning handle adjustment shaft; 3034. Adjustment shaft reset member; 304. Measuring member; 3041. Measuring rod; 3 042. First driving member; 3043. First adjusting rack; 3044. Driving shaft; 305. First adjusting shaft; 306. First adjusting block; 307. Driving adjusting gear; 308. First adjusting gear; 309. Hollow gear shaft; 310. First adjusting spiral groove; 311. Clamping member; 312. Second adjusting gear; 313. Second adjusting shaft; 314. Adjusting gear shaft; 315. Second adjusting gear; 316. Second adjusting rack; 317. Second adjusting spiral groove; 318. Second adjusting block; 319. Second driving member; 320. Limiting member; 4. Display screen. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] The inventors have found that when measuring tooth width or tooth cavity depth, due to the narrow oral environment and the structural characteristics of the human face, the spatial measurement of the posterior molar part will be blocked to a certain extent, which in turn affects the normal measurement of oral restoration space. Measurement using general measuring tools has problems of measurement difficulty and low measurement accuracy. In addition, some existing measuring devices require disassembly of the measuring mechanism to achieve measurement of tooth width or cavity depth, which makes their use in actual application more cumbersome, affecting measurement efficiency.

[0022] Based on the above findings, the present application proposes an oral restoration space measuring device, which designs an anterior tooth fixing component, squeezes the liquid in the water bag into the water pipes on both sides of the fixing groove through the occlusal fixing groove, and pushes out the positioning plate to fit the anterior teeth to fix the measuring device relative to the anterior teeth; designs a composite measuring component, adjusts the vertically arranged measuring component to the area to be measured, and drives the measuring component to move linearly through the first driving member until it contacts the bottom of the tooth cavity, or rotates the measuring component horizontally, and drives the clamping member at one end of the measuring member to clamp the two sides of the teeth in the posterior tooth area, and converts the rotation distance of the power shaft of the first driving member into linear distance data through the encoder, and transmits it to the display screen for reading; it has the advantages of accurate measurement results and easy use.

[0023] Example 1: See Figure 1-Figure 2 The present application discloses an oral restoration space measuring device, including a shell 1. In this embodiment, the shell 1 is a two-section hollow structure with two sections of different sizes. The shell 1 as a whole is made of a lightweight metal or plastic material with high strength. Anterior teeth fixing components 2 are provided above and on both sides below the larger section of the shell 1. A composite measuring component 3 for measuring oral restoration space is slidably provided on the smaller section of the shell 1 and at the end position of the section away from the anterior teeth fixing component 2.

[0024] See Figure 3-Figure 4 The anterior teeth fixing assembly 2 includes two support members 201 rotatably arranged on the upper and lower sides of the larger section of the shell 1. The support member 201 can be connected to the shell 1 by setting a flat cylindrical frustum structure to achieve relative rotation with the shell 1. In addition, the support member 201 can also be a sliding rod product that can be adjusted and locked in length, so that the device can be suitable for patients with different mouth opening degrees; A fixing groove 202 is fixed to the end of each support member 201 away from the housing 1 by means of bolt connection or the like. The cross-sectional shape of the fixing groove 202 is close to the shape of a "concave" character, that is, the fixing groove 202 includes a slender horizontal plate, and two vertical plates are provided at right angles to the two long sides of the fixing groove 202. At the same time, the groove body formed by the two vertical plates on the fixing groove 202 is wider than the width of the teeth in the front area of an average adult; A water bag 203 is fixed above the horizontal plate of the fixed groove 202 by bonding or other means. At the same time, multiple water pipes 204 are provided on the vertical plates on both sides of the fixed groove 202. The cross-sectional shape of the water pipes 204 is close to the "C" shape, that is, the bottom and top ends of each water pipe 204 are parallel to the horizontal plate of the fixed groove 202, and its bottom end is connected to the water bag 203, and a shaft member that fits closely with it is slidably provided in the top end. The shaft member is located at the end outside the top end of the water pipe 204 and is jointly fixed with a positioning plate 205. In this embodiment, there are six positioning plates 205, including four longer plates and two shorter plates. Taking one of the vertical plates of the fixed groove 202 as an example, the two longer plates are provided on both sides of the vertical plate, and the shorter plate is provided on the vertical plate in the middle of the two longer plates, and is respectively fixed to the shaft members in the corresponding water pipe 204; The positioning plate 205 is a plastic material with high strength and certain elasticity. When the patient's upper and lower teeth respectively bite the upper and lower fixing grooves 202, the water bag 203 can be squeezed, so that the water inside it pushes the multiple positioning plates 205 on both sides to move close to the center line of the fixing groove 202 through the water pipe 204 until it fits with the teeth. At this time, the measuring device can be positioned relative to the patient's teeth through the anterior teeth fixing component 2, and the shell 1 can be rotated and adjusted relative to the upper and lower anterior teeth fixing components 2, so that the composite measuring component 3 extending into the oral cavity can be close to the posterior teeth area on one side, thereby realizing subsequent oral restoration space measurement.

[0025] Example 2: See Figure 5 、 Figure 7 as well as Figure 9 Based on Example 1, a composite measuring assembly 3 for measuring the patient's oral restoration space is provided inside a smaller section of the housing 1. The composite measuring assembly 3 includes a connecting shaft 301 slidably provided in the housing 1. The connecting shaft 301 is a cylindrical structure with a slender cylindrical cavity in the middle. An annular limit block structure is provided at one end of the connecting shaft located inside the housing 1, and an installation structure with a rectangular cylindrical through hole in the middle is provided at one end of the connecting shaft located outside the housing 1. A circular positioning ring 3011 is provided below the installation structure. The housing 1 is further provided with an electric telescopic member 302 fixedly connected to the limit block of the connecting shaft 301. The electric telescopic member 302 is a slender electric push rod product. The end of the electric telescopic member 302 away from the connecting shaft 301 is further provided with a rotating handle 303 fixed vertically thereto. The rotating handle 303 passes through the housing 1 at the connection between the two sections and can rotate within a range of 90 degrees relative to the housing 1. In this embodiment, the rotating handle 303 is further provided with a positioning member that can position it vertically or horizontally relative to the housing 1: See Figure 8 、 Figure 11 as well as Figure 15 When the handle 303 is rotated to make the measuring member 304 and the housing 1 as a whole be in the same horizontal plane, the second positioning block 3032 can be fitted into the second positioning hole 103. At the same time, a first positioning block 3031 is slidably provided on the side of the handle 303 adjacent to the second positioning block 3032, that is, the side where the handle 303 is in contact with the larger end of the housing 1. The end of the first positioning block 3031 that passes through the handle 303 is connected to a handle adjustment shaft 3033 that is coaxially slidable with the handle 303. The handle adjustment shaft 3033 is away from the first positioning block 3031. When the handle 303 is rotated from the vertical position to the horizontal position, the elastic force of the adjusting shaft reset member 3034 is used to reset the handle adjustment shaft 3033, and the first positioning block 3031 is locked into the first positioning hole 102 on the handle slide 101.

[0026] A measuring member 304 for measuring the oral restoration space is slidably provided in the cylindrical through hole of the connecting shaft 301 at one end of the outer side of the shell 1. When measuring the oral restoration space, when it is necessary to measure the depth of the cavity on a certain tooth in the patient's posterior tooth area, the handle 303 is rotated to keep the measuring member 304 as a whole vertical to the shell 1 for measurement. When it is necessary to measure the width of a certain tooth in the patient's posterior tooth area, the handle 303 is rotated to keep the measuring member 304 as a whole in the same horizontal plane as the shell 1 for measurement.

[0027] Example 3: See Figure 12Based on Example 2, the measuring member 304 specifically includes a measuring rod 3041 disposed in the cylindrical through hole of the connecting shaft 301. In this embodiment, the measuring rod 3041 is in the form of a slender rectangular column with grooves on both sides. It should be noted that the measuring rod 3041 is actually a slender rod with an extremely small cross-section, which can be inserted into smaller cavities on the teeth. The structural dimensions shown in the drawings are appropriately exaggerated for ease of observation. See Figure 10 , located on the connecting shaft 301, and a first driving member 3042 is provided at the sliding connection with the measuring rod 3041 by means of bolts, etc., the first driving member 3042 is a miniature stepping motor, such as the "6mm brushed motor" produced by Dongguan Kehua Precision Industrial Technology Co., Ltd., the driving shaft of the first driving member 3042 is perpendicular to the groove located on the side of the measuring rod 3041 away from the housing 1, in this embodiment, a first adjusting rack 3043 is provided in the groove, and a driving adjustment gear 307 meshing with the first adjusting rack 3043 is fixed on the driving shaft 3044 of the first driving member 3042, so that when the first driving member 3042 drives the driving adjustment gear 307 to rotate, it can drive the measuring rod 3041 to move linearly upward or downward along the cylindrical through hole of the connecting shaft 301 through the cooperation with the first adjusting rack 3043; When it is necessary to measure the cavity depth of a certain tooth in the posterior tooth area of the patient, the handle 303 is rotated to keep the measuring rod 3041 vertical relative to the shell 1, and the first driving member 3042 is controlled to drive the measuring rod 3041 to move relative to the connecting shaft 301 until the bottom of the measuring rod 3041 and the bottom of the positioning ring 3011 at one end of the connecting shaft 301 are in the same horizontal plane. At this time, the rotation distance of the driving shaft of the first driving member 3042 is considered to be zero. Then the patient bites the anterior teeth fixing component 2, rotates the shell 1, and controls the electric telescopic member 302 to adjust the length of the connecting shaft 301 so that the positioning ring 3011 can cover the top of the tooth to be measured in the lower dental area, or the entire device can be inverted, engaged and adjusted so that the positioning ring 3011 covers the bottom of the tooth to be measured in the upper dental area, and then the first driving member 3042 is controlled to drive the measuring rod 3041 to move linearly relative to the positioning ring 3011 of the connecting shaft 301, that is, the end of the measuring rod 3041 close to the positioning ring 3011 is driven to extend into the cavity of the tooth to be measured. When the end of the measuring rod 3041 reaches the deepest part of the cavity, the first driving member 3042 is closed. At this time, the rotation distance of the driving shaft of the first driving member 3042 is the cavity depth of the tooth to be measured.

[0028] Example 4: See Figure 13Based on Example 3, the measuring component 304 also includes a first adjustment shaft 305 slidably arranged inside the rod body of the measuring rod 3041. The bottom of the measuring rod 3041, that is, the center of the end for inserting into the tooth cavity, is also rotatably provided with a first adjustment gear 308. A hollow gear shaft 309 is fixed at the center of the first adjustment gear 308. The cylindrical through hole in the center of the hollow gear shaft 309 cooperates with the shaft body of the first adjustment shaft 305. At the same time, a first adjustment block 306 is provided on both sides of the bottom of the shaft body of the first adjustment shaft 305. The general shape of the first adjustment block 306 is close to half a small ball. Two first adjustment spiral grooves 312 that cooperate with the first adjustment block 306 are opened on the inner end surface of the cylindrical through hole of the hollow gear shaft 311. When the first adjustment shaft 305 moves linearly along the rod body of the measuring rod 3041, the sliding action of the first adjustment block 306 in the first adjustment spiral groove 312 can drive the hollow gear shaft 311 and the first adjustment gear 308 to rotate. See Figure 14 , located at the bottom of the measuring rod 3041 and close to the edge, two clamping parts 311 are rotatably provided by setting a hinge axis, and a second adjusting gear 312 engaged with the first adjusting gear 308 is fixed on the hinge axis of each clamping part 311. When the first adjusting gear 308 rotates, it can drive the second adjusting gear 312 to rotate, and then drive the two clamping parts 311 to rotate. When measuring the cavity depth of the tooth, observed from the cross section of the measuring rod 3041, the two clamping parts 311 are in a position stored in the cross-sectional area of the measuring rod 3041. When the tooth width needs to be measured, the clamping part 311 is rotated to the outside of the cross-sectional area of the measuring rod 3041, so that the two sides of the tooth can be clamped by moving the measuring rod 3041 and cooperating with the positioning ring 3011 to measure the tooth width.

[0029] Example 5: Based on Example 4, a second adjusting shaft 313 is further provided inside the housing 1 and is inserted into the slender cylindrical cavity in the middle of the connecting shaft 301. A second driving member 319 is provided inside the housing 1. The second driving member 319 can be a stepper motor of the same model as the first driving member 3042, which is used to drive the second adjusting shaft 313 to rotate. A cylindrical cavity with guide grooves on the upper and lower sides is provided at the center of the second adjusting shaft 313 and close to one end of the measuring rod 3041. An adjusting gear shaft 314 is slidably provided in the cavity. The adjusting gear shaft 314 is located at the second adjusting shaft 313. A second adjusting gear 315 is slidably provided at one end of the outer portion of the shaft 313. The gear portion of the second adjusting gear 315 extends into a groove located on the side of the measuring rod 3041 close to the housing 1. At the same time, a second adjusting rack 316 that can be meshed with the second adjusting gear 315 is provided on the first adjusting shaft 305. When the second adjusting shaft 313 rotates, it can drive the adjusting gear shaft 314 and the second adjusting gear 315 to rotate, and then through the meshing action with the second adjusting rack 316, the first adjusting shaft 305 is linearly moved relative to the measuring rod 3041. See Figure 6 as well as Figure 16 The second adjusting gear 315 is located on the rod body outside the groove of the measuring rod 3041, and a round pancake-shaped turntable is provided. Two second adjusting blocks 318 are provided on both sides of the turntable, which are located on the inner end surface of the connecting shaft 301, and a second adjusting spiral groove 317 that cooperates with the second adjusting block 318 is provided in the groove near the measuring rod 3041. When the second adjusting gear 315 rotates, the second adjusting block 318 cooperates with the second adjusting spiral groove 317, so that the second adjusting gear 315 can gradually move toward the direction close to the adjusting gear shaft 314, that is, the second adjusting gear 315 gradually disengages from the second adjusting rack 316 during rotation. Disengagement. When the second adjusting gear 315 is completely disengaged from the second adjusting rack 316, the rotation of the second adjusting gear 315 no longer causes the second adjusting rack 316 to move. At this time, the two clamping parts 311 located at the bottom of the measuring rod 3041 are completely rotated out, and through the mutual cooperation of the first adjusting shaft 305 and the hollow gear shaft 309, the two clamping parts 311 remain in a completely rotated out state, that is, the clamping parts 311 will not rotate due to external forces, so that the measuring rod 3041 can be driven to move by the first driving part 3042 later, and the two sides of the tooth can be clamped by the positioning ring 3011 and the clamping parts 311 to measure the tooth width.

[0030] Example 6: Based on Examples 1-5, a display screen 4 is provided on the housing 1, and the display screen 4 is used to display the measured tooth cavity depth or tooth width. Specifically, a micro encoder for obtaining the rotation distance of the drive shaft 3044 is provided on the connecting shaft 301 and at the first driving member 3042. The rotation distance of the drive shaft 3044 is converted into linear distance data by the micro encoder and transmitted to the display screen 4 for display, so as to directly read the measurement data of the oral restoration space, specifically: The micro encoder can be the "eMCoder8 high-speed micro encoder" produced by Shanghai Haokong Automation Technology Co., Ltd. This encoder product can obtain the rotation distance of the stepper motor drive shaft and transmit it to the display screen 4 for display. The connection relationship between the micro encoder and the display 321, as well as the types and connection methods of other required electronic components, can refer to the principles of rangefinder products. This is the disclosed prior art. When measuring the tooth cavity depth, when the lowest point of the bottom of the measuring rod 3041 and the lowest point of the positioning ring 3011 of the connecting shaft 301 are on the same horizontal plane, the rotation distance data of the first driving member 3042 driving the shaft 3044 obtained by the micro encoder is set to zero / reset to zero, and the device is fixed in the patient's mouth with the measuring member 304 and the housing 1 in a vertical state. Then, when the first driving member 3042 drives the measuring rod 3041 to contact the bottom of the tooth cavity, the data obtained by the micro encoder and transmitted to the display screen 4 is the measured tooth cavity depth data; When measuring the tooth width, when the clamping member 311 is completely rotated out to the outside of the area where the cross-section of the measuring rod 3041 is located, the first driving member 3042 is controlled to keep the distance between the clamping member 311 and the positioning ring 3011 greater than the width of a general molar. At this time, the data on the display screen 4 is recorded, and then the data obtained by the micro encoder is set to zero / reset, and the device with the measuring member 304 and the shell 1 in the same horizontal plane is fixed to the patient's mouth. Then, when the first driving member 3042 drives the measuring rod 3041 until the clamping member 311 and the positioning ring 3011 clamp the two sides of the tooth to be measured, the data on the display screen 4 is read at this time, and the data obtained this time is subtracted from the data recorded last time to obtain the measured tooth width data.

[0031] A method for using an oral restoration space measuring device comprises the following steps: S1. Rotate the handle 303 to adjust the measuring member 304 according to the type of oral prosthesis spatial data to be measured. After adjustment, the patient bites the anterior teeth fixing assembly 2, adjusts the length of the connecting shaft using the electric telescopic member 302, and rotates the adjustment housing 1 to bring the measuring member 304 as close as possible to the position of the tooth to be measured. The device is then removed. S2. Use the measuring member 304 perpendicular to the housing 1 to measure the tooth cavity depth. Control the first driving member 3042 to adjust the measuring rod 3041 linearly along the connecting shaft 301 until the bottom of the measuring rod 3041 and the positioning ring 3011 at the bottom of the connecting shaft 301 are on the same horizontal plane. Fix the device into the patient's mouth again, fit the positioning ring 3011 to the top of the tooth to be measured, start the first driving member 3042 to push the measuring rod 3041 out of the connecting shaft 301 until the bottom end of the measuring rod 3041 contacts the bottom of the tooth cavity. Observe the data on the display screen 4 to obtain the tooth cavity depth. S3. Use the measuring member 304 parallel to the shell 1 to measure the tooth width, control the second driving member 319 to make the first adjustment axis 305 move linearly along the measuring rod 3041, and then rotate the two clamping members 311 out from the inner area of the cross-section of the measuring rod 3041, and place the positioning ring 3011 and the clamping member 311 on both sides of the tooth to be measured respectively, control the first driving member 3042 to adjust the measuring rod 3041 linearly along the connecting axis 301 until the positioning ring 3011 and the clamping member 311 clamp the two sides of the tooth, and calculate the tooth width by observing the data on the display screen 4.

[0032] Practical application cases 1. Patient position: The patient sits and adjusts the patient's body and head position, keeping the jaw planes of the upper and lower dental arches parallel to the ground, and the patient's head height consistent with the doctor's hand height. Adjust the patient's head position so that the patient feels most relaxed and comfortable, and keep the head stable; 2. Preparation: After a preliminary observation of the teeth to be measured, the patient bites the anterior teeth fixed assembly 2. The doctor controls the electric telescopic member 302 to adjust the length of the connecting shaft 301 according to the position of the teeth, and rotates the housing 1 so that the measuring member 304 can contact the position of the teeth to be measured, and then removes the device; 3. Measurement method: For the case of a cavity after caries preparation, the first driving member 3042 is controlled to move the measuring rod 3041 to the lowest point and to be flush with the positioning ring 3011. The data obtained by the micro encoder, i.e., the data displayed on the display screen 4, is then reset to zero. The device is then placed in the patient's mouth. The patient bites the anterior teeth fixing assembly 2 again to fix it. The housing 1 is rotated so that the positioning ring 3011 covers the upper top surface of the tooth to be measured. The first driving member 3042 is started, and the measuring rod 3041 is extended into the cavity on the tooth to be measured. When the bottom of the measuring rod 3041 contacts the bottom of the cavity, the data on the display screen 4 is the cavity depth data. After the measurement is completed, the measuring rod 3041 is controlled to be withdrawn from the cavity, and the device is removed from the patient's mouth. When measuring the width of the teeth, control the first driving member 3042 to move the bottom of the measuring rod 3041 to a distance from the positioning ring 3011 that is greater than the width of a general molar. At this time, record the data on the display screen 4 and reset the data to zero. Then control the second driving member 319 to rotate the two clamping members 311 at the bottom of the measuring rod 3041 out, place the device in the patient's mouth and fix it, then control the first driving member 3042 to move the measuring rod 3041 along the connecting shaft 301, and gradually reduce the distance between the positioning ring 3011 and the clamping member 311 until the two sides of the tooth are clamped. At this time, read the data on the display screen 4 and subtract the data from the last recorded data to obtain the width data of the tooth, thereby completing the measurement of the oral restoration space.

[0033] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An oral restoration space measuring device, comprising a housing (1), characterized in that: Also includes: Anterior teeth fixing assembly (2), arranged on the housing (1), and used for fixing the measuring device to the patient's oral cavity; The composite measuring component (3) is arranged at one end of the housing (1) and is used to measure the tooth width and cavity depth of caries.

2. The oral restoration space measuring device according to claim 1, characterized in that: The composite measurement component (3) comprises: A connecting shaft (301) is slidably arranged at one end of the housing (1) away from the anterior teeth fixing assembly (2), and a measuring member (304) is slidably arranged at the end of the connecting shaft (301) away from the housing (1); The rotating handle (303) is rotatably arranged in the housing (1) and is connected to the connecting shaft (301) via the electric telescopic member (302). The rotating handle (303) is used to drive the connecting shaft (301) and the measuring member (304) to rotate and adjust within a range of 90 degrees relative to the housing (1).

3. The oral restoration space measuring device according to claim 2, characterized in that: The measuring member (304) comprises: A measuring rod (3041) is slidably arranged at one end of the connecting shaft (301) away from the housing (1); the connecting shaft (301) is further provided with a first driving member (3042) for slidingly adjusting the measuring rod (3041) along the connecting shaft (301); A positioning ring (3011) is provided at one end of the measuring rod (3041) and is used to fit the patient's teeth and cooperate with the measurement.

4. The oral restoration space measuring device according to claim 3, characterized in that: A first adjustment rack (3043) is provided on one side of the measuring rod (3041), and a driving adjustment gear (307) meshing with the first adjustment rack (3043) is provided on the driving shaft (3044) of the first driving member (3042).

5. The oral restoration space measuring device according to claim 4, characterized in that: The measuring member (304) further comprises: A first adjustment shaft (305) is slidably disposed in the measuring rod (3041), and a first adjustment block (306) is disposed on one side of the bottom of the first adjustment shaft (305); A first adjusting gear (308) is rotatably disposed at the bottom of the measuring rod (3041) and is connected to the first adjusting shaft (305); The clamping member (311) is rotatably arranged on both sides of the bottom of the measuring rod (3041), and a second adjusting gear (312) is provided on the clamping member (311) and is engaged with the first adjusting gear (308). The first adjusting gear (308) is driven to rotate by the first adjusting shaft (305), so that the second adjusting gear (312) drives the clamping member (311) to rotate.

6. The oral restoration space measuring device according to claim 5, characterized in that: The measuring member (304) further comprises: A second adjustment rack (316) is provided on the first adjustment shaft (305); A second adjustment shaft (313) is disposed in the connecting shaft (301); an adjustment gear shaft (314) is disposed at one end of the second adjustment shaft (313) away from the connecting shaft (301); a second adjustment gear (315) is slidably disposed on the adjustment gear shaft (314) and is meshed with a second adjustment rack (316); The second adjusting block (318) is arranged on both sides of the second adjusting gear (315), and the inner end surface of the connecting shaft (301) is also provided with a second adjusting spiral groove (317) that matches the second adjusting block (318); The second driving member (319) is arranged in the connecting shaft (301) and is used to drive the second adjusting shaft (313) to rotate.

7. The oral restoration space measuring device according to claim 6, characterized in that: The measuring member (304) further comprises: A display screen (4), arranged on the housing (1), for displaying measured oral restoration space data; A micro encoder is provided on the connecting shaft (301) and is used to detect the rotation distance data of the driving shaft (3044) of the first driving member (3042), and transmit the rotation distance data to the display screen (4) for data display.

8. A method for using the oral restoration space measurement device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. According to the type of oral restoration space data to be measured, the rotating handle (303) is rotated to adjust the measuring member (304). After the adjustment is completed, the patient bites the front teeth fixing component (2), adjusts the length through the electric telescopic member (302), and rotates the adjustment housing (1) to make the measuring member (304) as close as possible to the position of the tooth to be measured; S2, measuring the depth of the tooth cavity using a measuring member (304) that is in a vertical position relative to the housing (1); S3. Measure the tooth width using the measuring member (304) that is parallel to the housing (1).

9. The method for using the oral restoration space measurement device according to claim 8, characterized in that: In step S2, before measuring the tooth cavity depth, the first driving member (3042) is controlled to adjust the measuring rod (3041) linearly along the connecting shaft (301) until the bottom of the measuring rod (3041) and the positioning ring (3011) at the bottom of the connecting shaft (301) are located on the same horizontal plane, the data on the display screen (4) is reset to zero, and then the device is placed in the patient's mouth and adjusted, the positioning ring (3011) is attached to the top of the tooth to be measured, the first driving member (3042) is started to push the measuring rod (3041) out of the connecting shaft (301) until the bottom of the measuring rod (3041) contacts the bottom of the tooth cavity, and the tooth cavity depth is obtained by observing the data on the display screen (4). When the bottom of the measuring rod (3041) contacts the bottom of the tooth cavity, the data on the display screen (4) is the depth data of the tooth cavity to be measured.

10. The method for using the oral restoration space measurement device according to claim 8, characterized in that: In step S3, before measuring the tooth width, the second driving member (319) is controlled to move the first adjusting shaft (305) linearly along the measuring rod (3041), thereby rotating the two clamping members (311) out from the inner side of the cross-sectional area of the measuring rod (3041), recording the data on the display screen (4) at this time, and resetting the data on the display screen (4), placing the device in the patient's mouth and adjusting it so that the positioning ring (3011) and the clamping member (311) are respectively placed on both sides of the tooth to be measured, controlling the first driving member (3042) to adjust the measuring rod (3041) linearly along the connecting shaft (301) until the positioning ring (3011) and the clamping member (311) clamp both sides of the tooth, observing the data on the display screen (4), and using the data recorded last time minus the data displayed on the display screen (4) this time to obtain the width data of the tooth to be measured.

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