Oral impression device with scan head recognition

Abstract

This utility model relates to the field of medical device technology, and in particular to an oral impression device capable of recognizing scanning heads. It includes a main unit with a connector formed on the outer side of the housing and multiple scanning heads. Each scanning head includes a mounting portion detachably mounted to the connector and a scanning portion extending into the patient's oral cavity. The scanning portions on different scanning heads have different sizes, and a protruding trigger portion is formed on the mounting portion. The trigger portions on different scanning heads are positioned differently on the mounting portion. A trigger assembly is mounted on the main unit and includes a switch. After the scanning head is assembled with the main unit, the trigger portion can trigger the switch to open. This utility model, after the scanning head is mounted on the main unit, utilizes the different interaction relationships between the trigger portions on different scanning heads and the trigger assembly, allowing the main unit to directly recognize the scanning head mounted on the connector. This eliminates the need for manual setting of the main unit's mode, making it convenient and efficient to use.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an oral impression device that can identify the scanning head. Background Technology

[0002] An impression apparatus is an analytical instrument developed based on optical imaging technology. It can acquire three-dimensional digital models of teeth within the oral cavity through digital scanning, and can be used for three-dimensional digital reconstruction of dental prostheses, orthodontic models, etc. An impression apparatus consists of a scanning head and a main unit. The scanning head needs to be inserted into the patient's mouth. However, the size of different patients' mouths varies, with significant differences between adults and children. Therefore, different sizes of impression apparatus are required, which is costly and space-consuming. Using only one size of impression apparatus can affect patient comfort and cannot accommodate complex individual differences; for example, using the same adult impression apparatus would significantly reduce the comfort of children. Existing impression apparatuses with different scanning head sizes require manual setting of different modes on the main unit after each scanning head installation, which is inconvenient and inefficient. Utility Model Content

[0003] In view of this, the purpose of this application is to provide an oral impression instrument that can identify the scanning head, so as to solve the problem that oral impression instruments with scanning heads of different specifications need to be manually set on the host after each installation of the scanning head, which is inconvenient and inefficient.

[0004] This utility model provides an oral impression device capable of recognizing a scanning head, comprising: The main unit has a connector formed on the outside of the casing; The scanning head includes a mounting portion detachably mounted to the connector and a scanning portion extending into the patient's oral cavity; multiple scanning heads are provided, and the size of the scanning portion on different scanning heads is different; a protruding trigger portion is formed on the mounting portion, and the trigger portion on different scanning heads is positioned differently on the mounting portion; A triggering component is installed on the host computer, and the triggering component includes a switch; after the scanning head is assembled with the host computer, the triggering part can trigger the switch to open.

[0005] Preferably, multiple sets of trigger components are provided, and each set corresponds to one of the scanning heads. The multiple sets of trigger components are spaced apart in the circumferential direction of the insertion part. Preferably, the triggering components are provided in a group, and the distance between the triggering part on different scanning heads and the end of the scanning head facing the plug is different; multiple identification bits are formed on the switching element, and the triggering part on different scanning heads can trigger different identification bits in the switching element.

[0006] Preferably, the switching element includes: The base has an installation cavity. An elastic element is disposed within the mounting cavity; The trigger has one end disposed inside the mounting cavity and abutting against the elastic member, and the other end extends out of the mounting cavity and can be triggered by the triggering part. Preferably, a protruding limiting post is formed inside the mounting cavity, and the elastic element is sleeved on the limiting post; A protruding limiting boss is formed on the circumferential sidewall of the end of the trigger that abuts against the elastic member.

[0007] Preferably, the switching element is disposed within the housing of the main unit; The triggering component also includes: The movable component has one end that can abut against the switch component, and the other end that extends out of the host from the plug-in portion; after the scanning head is assembled with the host, the trigger portion can drive the movable component to generate displacement, thereby triggering the switch component to open.

[0008] Preferably, the movable member is formed as a strip structure extending along its displacement direction; the circumferential sidewall of the movable member is formed with a protruding limiting portion, which can abut against the inner wall of the main unit's housing.

[0009] Preferably, the end of the movable member facing the switch member has a recessed limiting groove for the switch member to extend into. Preferably, the scanning head is hollow inside, and a protruding limiting protrusion is formed on the inner wall of the mounting part, which can abut against the insertion part. Preferably, the host is snapped into the scanning head, or the host is magnetically connected to the scanning head. Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses an oral impression device with a recognizable scanning head, comprising a main unit with a connector formed on the outer side of the housing and multiple scanning heads; each scanning head includes a mounting part detachably mounted on the connector and a scanning part extending into the patient's oral cavity; the scanning parts on different scanning heads have different sizes, and a protruding trigger part is formed on the mounting part, with the trigger parts on different scanning heads having different positions on the mounting part; a trigger assembly is mounted on the main unit, and the trigger assembly includes a switch; after the scanning head is assembled with the main unit, the trigger part can trigger the switch to open, thus, after the scanning head is mounted on the main unit, different interaction relationships are created between the trigger parts on different scanning heads and the trigger assembly, allowing the main unit to directly recognize the scanning head mounted on the connector, thereby eliminating the need for manual setting of the main unit's mode, making it convenient and efficient to use.

[0010] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0011] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 A schematic diagram of the structure of an oral impression device with a recognizable scanning head provided for an embodiment of this utility model; Figure 2 An exploded view of the oral impression device with a recognizable scanning head provided for an embodiment of this utility model; Figure 3 A schematic diagram of the structure of the first scanning head in an oral impression device with a recognizable scanning head provided for an embodiment of this utility model; Figure 4 A schematic diagram of the structure of the second scanning head in an oral impression device with a recognizable scanning head provided for an embodiment of this utility model; Figure 5 An exploded view of the dental impression device with a recognizable scanning head provided as an embodiment of this utility model. Figure 6 for Figure 5 Enlarged structural diagram at point A; Figure 7 A partial structural cross-sectional view of an oral impression device with a recognizable scanning head provided for an embodiment of this utility model; Figure 8 for Figure 7 A magnified structural diagram at point B in the middle.

[0013] Icons: 10-Main unit; 11-Plug-in part; 20-Scanning head; 201-First scanning head; 202-Second scanning head; 21-Mounting part; 211-Trigger part; 212-Limiting protrusion; 22-Scanning part; 30-Trigger assembly; 31-Moving part; 311-Limiting part; 312-Limiting groove; 32-Switch; 321-Base; 3211-Mounting cavity; 3212-Limiting post; 322-Elastic part; 323-Trigger part; 3231-Limiting boss. Detailed Implementation

[0014] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0015] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0016] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0017] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0018] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0019] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0020] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0021] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0022] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0023] According to the first aspect of the present invention, an oral impression device capable of recognizing a scanning head is provided, which includes a main unit 10, a scanning head 20, and a triggering component 30.

[0024] The specific structure of the above-mentioned components of the oral impression apparatus with recognizable scanning head 20 according to this embodiment will be described below.

[0025] In this embodiment, as Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, the outer side of the housing of the main unit 10 has a connector 11 for mounting the scanning head 20. The main unit 10 can be formed into a strip-shaped structure, and the connector 11 is located at one end in the length direction of the main unit 10. Multiple scanning heads 20 are provided, and the different scanning heads 20 have different specifications to adapt to different sizes of oral cavity and meet complex individual differences.

[0026] Specifically, such as Figures 1 to 7 As shown, the scanning head 20 includes a mounting part 21 detachably mounted to the insertion part 11 and a scanning part 22 extending into the patient's oral cavity for projecting light and capturing real-time images of the light projected onto an object, and outputting an electronic model of the teeth through software analysis. The mounting part 21 and the scanning part 22 can be positioned opposite each other at opposite ends along the length of the scanning head 20. The size of the scanning part 22 varies on different scanning heads 20, thereby improving the comfort of the scanning part 22 in the patient's oral cavity.

[0027] In an optional embodiment, two scanning heads 20 are provided, one of which is formed as a first scanning head 201, and the other scanning head 20 is a second scanning head 202, such as... Figure 3 and Figure 4 As shown, the size of the scanning portion 22 on the second scanning head 202 is smaller than the size of the scanning portion 22 on the first scanning head 201, thus making the second scanning head 202 more suitable for patients or children with smaller mouths compared to the first scanning head 201. Preferably, the size of the scanning portion 22 on the second scanning head 202 in the width direction of the scanning head 20 is smaller than the size of the scanning portion 22 on the first scanning head 201 in the width direction of the scanning head 20, where the width direction of the scanning head 20 can be understood as the length direction of the patient's mouth.

[0028] In other alternative implementations, the number of scanning heads 20 is greater than 2, which allows for finer sizing and further improves comfort.

[0029] like Figures 2 to 6 As shown, a protruding trigger portion 211 is formed on the mounting portion 21. The trigger portion 211 can be formed as a strip-shaped structure or a protrusion-shaped structure. Specifically, the trigger portion 211 is provided on the side of the mounting portion 21 facing the insertion portion 11. For example, when the mounting portion 21 is sleeved on the outside of the insertion portion 11, the trigger portion 211 is provided on the inner wall of the mounting portion 21 facing the insertion portion 11.

[0030] In this embodiment, the mounting portions 21 on different scanning heads 20 are of the same size, thus allowing different scanning heads 20 to be mounted on the same host 10. The trigger portions 211 on different scanning heads 20 are positioned differently on the mounting portions 21, and the trigger assembly 30 includes a switch 32. After the scanning head 20 is assembled with the host 10, the trigger portion 211 can trigger the switch 32 to open. Thus, after the scanning head 20 is mounted on the host 10, different trigger portions 211 on different scanning heads 20 can interact with the trigger assembly 30, allowing the host 10 to directly identify the scanning head 20 mounted on the connector 11. This eliminates the need for manual setting of the host 10's mode, making it convenient and efficient to use.

[0031] It should be noted that the switch 32 is communicatively connected to the control module used to set the mode of the host 10, so that the host 10 can recognize the signal emitted by the switch 32.

[0032] In a first alternative implementation, such as Figure 6 As shown, multiple sets of trigger components 30 are provided, meaning each set of trigger components 30 includes a switch element 32, and each trigger component 30 corresponds one-to-one with a scanning head 20. For example, when two scanning heads 20 are provided, two sets of trigger components 30 are correspondingly provided. These multiple sets of trigger components 30 are spaced apart in the circumferential direction of the insertion part 11 (i.e., spaced apart in the length direction surrounding the host 10), so that after the scanning head 20 is installed on the insertion part 11, only one of the multiple switches 32 can be triggered to open. For example, when two scanning heads 20 are provided, one trigger part 211 can be located on the left side in the width direction of the scanning head 20, and the other trigger part 211 can be located on the right side in the width direction of the scanning head 20. The trigger parts 211 on the two scanning heads 20 trigger different switches 32 respectively, so that when different scanning heads 20 are installed, the corresponding switch 32 is opened, and the other switch 32 is opened, allowing the host 10 to automatically identify different scanning heads 20. In this embodiment, the switch element 32 can be a tactile switch.

[0033] In a second alternative embodiment, a set of trigger components 30 are provided, with different distances between the trigger portions 211 on different scanning heads 20 and the ends of the scanning heads 20 facing the insertion portion 11. That is, in the length direction of the scanning head 20, different trigger portions 211 are at different distances from the edge of the scanning head 20; multiple identification positions are formed on the switch member 32. Because the different trigger portions 211 are at different distances from the edge of the scanning head 20, after the scanning head 20 is assembled with the host 10, the trigger portions 211 on different scanning heads 20 can trigger different identification positions in the switch member 32, thereby allowing the host 10 to identify different scanning heads 20. In this embodiment, the switch member 32 can be a resistive switch, where the resistance is different when the switch is driven to different positions, thereby realizing the identification of different scanning heads 20.

[0034] Specifically, such as Figure 7 and Figure 8 As shown, the switch 32 includes a base 321, an elastic element 322, and a trigger element 323. The base 321 is fixed relative to the housing of the host 10. A mounting cavity 3211 is formed inside the base 321, and the mounting cavity 3211 is formed into a groove-shaped structure. The elastic element 322 can be a telescopic spring and is disposed in the mounting cavity 3211. One end of the trigger element 323 is disposed in the mounting cavity 3211 and abuts against the elastic element 322. The other end of the trigger element 323 extends out of the mounting cavity 3211 and can be triggered by the triggering part 211. Thus, after the scanning head 20 is assembled with the host 10, the triggering part 211 will drive the trigger element 323 to squeeze the elastic element 322 to produce deformation, thereby triggering the switch 32 to open. After the scanning head 20 is removed from the host 10, the elastic element 322 resets to drive the trigger element 323 back to its original position, meeting the needs of repeated disassembly and assembly of different scanning heads 20. Furthermore, such as Figure 8 As shown, a protruding limiting post 3212 is formed within the mounting cavity 3211. The limiting post 3212 can be formed into a cylindrical or polygonal prism-shaped block structure. The limiting post 3212 can be located on the side of the mounting cavity 3211 away from the trigger member 323. The elastic member 322 is sleeved on the limiting post 3212 to guide the extension and retraction of the elastic member 322 and prevent the elastic member 322 from shifting during the extension and retraction process. A protruding limiting boss 3231 is formed on the circumferential sidewall of the end of the trigger member 323 that abuts against the elastic member 322. The limiting boss 3231 can be formed into a ring structure or a block structure protruding along the direction perpendicular to the movement of the trigger member 323. The limiting boss 3231 can abut against the base 321 to limit the displacement of the trigger member 323 and prevent the trigger member 323 from separating from the base 321.

[0035] In other alternative embodiments, the switch 32 may also have other structures, as long as it can be turned on by the trigger 211.

[0036] In a preferred embodiment, such as Figures 5 to 8 As shown, the switch 32 is entirely disposed within the housing of the main unit 10, thus protecting the switch 32. In another preferred embodiment, the switch 32 is partially disposed within the housing of the main unit 10. Specifically, one end of the base 321, elastic member 322, and trigger member 323 in the switch 32 is disposed within the housing of the main unit 10, and the other end of the trigger member 323 extends out of the main unit 10 from the plug-in portion 11. This allows the trigger portion 211 to drive the trigger member 323 to compress the elastic member 322 and cause deformation without protruding from the side of the mounting portion 21 facing the plug-in portion 11.

[0037] It should be noted that when the switch 32 is integrally disposed within the housing of the host 10, optionally, the trigger portion 211 is formed as a strip-shaped structure that protrudes from the side of the mounting portion 21 facing the plug portion 11 and can extend into the housing of the host 10.

[0038] Preferably, the trigger assembly 30 further includes a movable member 31. One end of the movable member 31 can abut against the switch member 32, specifically against the trigger member 323 as described above. After the scanning head 20 is removed from the host 10, the elastic member 322 resets to drive the trigger member 323 to push the movable member 31 to its original position. The other end of the movable member 31 extends out of the host 10 from the plug-in portion 11, so that after the scanning head 20 is assembled with the host 10, the trigger portion 211 can squeeze the movable member 31, so that the trigger portion 211 can drive the movable member 31 to move, specifically to move relative to the housing of the host 10, thereby enabling the movable member 31 to trigger the switch member 32 to open. In this way, the trigger portion 211 does not need to protrude from the side of the mounting portion 21 facing the plug-in portion 11 to enable the switch member 32 to open.

[0039] Furthermore, in the first optional embodiment where multiple sets of trigger components 30 are provided as described above, each set of trigger components 30 includes a movable element 31 and a switch element 32. Multiple movable elements 31 are circumferentially spaced around the insertion portion 11, such that after the scanning head 20 is installed on the insertion portion 11, only one of the multiple movable elements 31 is displaced, triggering one of the multiple switch elements 32 to open. For example, when two scanning heads 20 are provided, the trigger portions 211 on the two scanning heads 20 respectively drive one movable element 31 of the two sets of trigger components 30 to displace, so that when different scanning heads 20 are installed, the corresponding switch element 32 is opened, and the other switch element 32 is opened, allowing the host 10 to automatically identify different scanning heads 20.

[0040] Furthermore, in a second optional embodiment of the trigger component 30 set as described above, the trigger component 30 set includes a movable member 31 and a switch member 32. The switch member 32 has a plurality of identification positions formed on it. The plurality of identification positions are arranged at intervals along the displacement direction of the movable member 31 on the switch member 32. Since the different trigger parts 211 are at different distances from the edge of the scanning head 20, after the scanning head 20 is assembled with the host 10, the trigger parts 211 on the different scanning heads 20 can drive the movable member 31 to produce different displacements, so as to trigger different identification positions in the switch member 32, thereby allowing the host 10 to identify different scanning heads 20.

[0041] Preferably, such as Figure 7 and Figure 8 As shown, the movable member 31 is formed as a strip structure extending along its displacement direction, such as a cylinder or a columnar structure with a polygonal cross-section; a protruding limiting part 311 is formed on the circumferential sidewall of the movable member 31. The limiting part 311 can be formed as a ring structure or a block structure protruding along the direction perpendicular to the movement of the movable member 31. The limiting part 311 can abut against the inner wall of the housing of the main unit 10 to limit the position of the movable member 31 and prevent the movable member 31 from falling off the main unit 10.

[0042] In a preferred embodiment, such as Figure 8 As shown, a recessed limiting groove 312 is formed at the end of the movable member 31 facing the switch member 32, allowing the switch member 32 to extend into it. For example, the trigger member 323, as described above, partially extends into the limiting groove 312, thereby improving the accuracy and reliability of the movable member 31 driving the switch member 32 to open. Optionally, the limiting groove 312 can be formed as a rectangular groove or an arc-shaped groove. In this embodiment, as Figures 2 to 4 and Figure 7 As shown, the scanning head 20 is hollow inside, and the scanning section 22 has an opening for light to escape. Each mounting section 21 has a protruding limiting protrusion 212 on its inner wall. The limiting protrusion 212 can be formed as a strip structure. The limiting protrusion 212 can abut against the insertion section 11 and is spaced apart from the trigger section 211, thus preventing excessive assembly force between the scanning head 20 and the insertion section 11 from causing it to burst. Preferably, the limiting protrusion 212 on different scanning heads 20 has the same position and shape.

[0043] In an alternative embodiment, the host 10 and the scanning head 20 are snap-fit ​​connected, for example, by providing snap-fit ​​grooves or protrusions on the insertion part 11 and the scanning head 20, respectively. In another alternative embodiment, the host 10 and the scanning head 20 are magnetically connected, for example, by providing magnets on the insertion part 11 and the scanning head 20 that can attract each other, so that the scanning head 20 can be directly attracted to the insertion part 11 when it is close to the host 10. However, the detachable connection method between the host 10 and the scanning head 20 is not limited to this, as long as the two can be detachably assembled and the trigger part 211 can drive the movable part 31 after assembly. The oral impression device with recognizable scanning heads according to this utility model includes a main unit with a connector formed on the outer side of the housing and multiple scanning heads; each scanning head includes a mounting part detachably mounted on the connector and a scanning part extending into the patient's oral cavity; the scanning parts on different scanning heads have different sizes, and a protruding trigger part is formed on the mounting part, with the trigger parts on different scanning heads having different positions on the mounting part; a trigger assembly is mounted on the main unit, and the trigger assembly includes a switch; after the scanning head is assembled with the main unit, the trigger part can trigger the switch to open, so that after the scanning head is mounted on the main unit, different interaction relationships are formed between the trigger parts on different scanning heads and the trigger assembly, allowing the main unit to directly recognize the scanning head mounted on the connector, thus eliminating the need for manual setting of the main unit's mode, making it convenient to use and highly efficient.

[0044] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A dental impression device capable of recognizing a scanning head, characterized in that, include: The main unit has a connector formed on the outside of the casing; The scanning head includes a mounting portion detachably mounted to the connector and a scanning portion extending into the patient's oral cavity; multiple scanning heads are provided, and the size of the scanning portion on different scanning heads is different; a protruding trigger portion is formed on the mounting portion, and the trigger portion on different scanning heads is positioned differently on the mounting portion; A triggering component is installed on the host computer, and the triggering component includes a switch; after the scanning head is assembled with the host computer, the triggering part can trigger the switch to open.

2. The oral impression device with a recognizable scanning head according to claim 1, characterized in that, Multiple sets of trigger components are provided, and each set corresponds to one of the scanning heads. The multiple sets of trigger components are spaced apart in the circumferential direction of the plug-in portion.

3. The oral impression device with a scan-identifiable scanning head according to claim 1, characterized in that, The triggering components are arranged in a group, and the distance between the triggering part on different scanning heads and the end of the scanning head facing the plug is different; multiple identification bits are formed on the switching element, and the triggering part on different scanning heads can trigger different identification bits in the switching element.

4. The oral impression device with a scan-identifiable scanning head according to claim 1, characterized in that, The switching element includes: The base has an installation cavity. An elastic element is disposed within the mounting cavity; The trigger has one end disposed inside the mounting cavity and abutting against the elastic member, and the other end extends out of the mounting cavity and can be triggered by the triggering part.

5. The oral impression device with a scan-identifiable scanning head according to claim 4, characterized in that, A protruding limiting post is formed inside the mounting cavity, and the elastic element is sleeved on the limiting post; A protruding limiting boss is formed on the circumferential sidewall of the end of the trigger that abuts against the elastic member.

6. The oral impression device with a recognizable scanning head according to claim 1, characterized in that, The switching element is disposed inside the housing of the main unit; The triggering component also includes: The movable component has one end that can abut against the switch component, and the other end that extends out of the host from the plug-in portion; after the scanning head is assembled with the host, the trigger portion can drive the movable component to generate displacement, thereby triggering the switch component to open.

7. The oral impression device with a scan-identifiable scanning head according to claim 6, characterized in that, The movable component is formed as a strip structure extending along its displacement direction; the circumferential sidewall of the movable component has a protruding limiting portion that can abut against the inner wall of the main unit's housing.

8. The oral impression device with a recognizable scanning head according to claim 6, characterized in that, The movable component has a recessed limiting groove at the end facing the switch component, allowing the switch component to extend into it.

9. The oral impression device with a recognizable scanning head according to claim 1, characterized in that, The scanning head is hollow inside, and a protruding limiting protrusion is formed on the inner wall of the mounting part, which can abut against the insertion part.

10. The oral impression device with a recognizable scanning head according to claim 1, characterized in that, The host is snapped to the scanning head, or the host is magnetically connected to the scanning head.

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