Stereotaxic device

Abstract

The present invention relates to a positioning device comprising a base and a first support assembly disposed on the base and accommodating a body of an object, wherein the first support assembly is mounted on the base and comprises a sliding rail extending in one direction, a first frame accommodating the body of the object and having one end rotatably connected to the sliding rail, and a second frame having one end rotatably connected to the base and the other end rotatably connected to the first frame.

Description

Technology Field

[0001] The present invention relates to a positioning device. Background Technology

[0002] With the recent increase in research in the fields of life science and medical science, the role and importance of animal testing are growing significantly, and accordingly, various animal testing facilities are being developed in research institutes, hospitals, and companies.

[0003] Animal testing is a method that utilizes experimental animals, such as monkeys, guinea pigs, and mice (hereinafter collectively referred to as "subjects"), to study surgical procedures or the physiological and pharmacological characteristics of animal nerve cells. In particular, as primates are phylogenetically the closest relatives to humans, animal testing using primates is conducted in a wide range of ways, from simple blood tests to experiments involving the direct administration of drugs into the brain.

[0004] In general, a stereotactic device is used to immobilize the subject in animal experiments. In the case of brain region experiments, drilling is performed on the subject's skull, and drugs are injected into the cisterna magna or cerebrospinal fluid is collected. At this time, the stereotactic device with the subject placed on it is inserted into an MRI machine to obtain an image of the subject's skull and identify the drilling location or needle injection location.

[0005] However, conventional positioning devices often have components that support the object fixed in their respective positions, which makes it impossible to modify the position of the components to suit the task being performed and presents a problem of being difficult to apply to various objects. Prior art literature

[65535] Republic of Korea Published Patent Application No. 10-2018-0135254 (Published Dec. 20, 2018) Republic of Korea Published Patent Application No. 10-2007-0090294 (Published Sep. 6, 2007) The problem to be solved

[0006] The present invention aims to provide a stereotactic device capable of partial adjustment for brain experiments on primates, so as to be adapted to the type of task performed and the skull characteristics of various experimental subjects.

[0007] In particular, the invention provides a stereotactic device that can be used in conjunction with external devices such as MRI imaging devices and stereotactic injection devices, and is utilized for cerebrospinal fluid sampling or drug injection into the cerebrospinal fluid of primates. means of solving the problem

[0008] The present invention provides a positioning device comprising a base and a first support assembly disposed on the base and accommodating the body of an object, wherein the first support assembly comprises a sliding rail mounted on the base and extending in one direction, a first frame accommodating the body of the object and having one end rotatably connected to the sliding rail, and a second frame having one end rotatably connected to the base and the other end rotatably connected to the first frame.

[0009] Additionally, the base may comprise a first plate, a second plate disposed on the upper portion of the first plate and having an adjustment slit, and a fixing member inserted into the adjustment slit and adjusting the position of the second plate relative to the first plate.

[0010] Additionally, the first support assembly may further comprise a seat positioned adjacent to the first frame, with one end rotatably connected to the sliding rail and slidingly.

[0011] In addition, the first support assembly may further include a strap disposed on the first frame.

[0012] Additionally, it includes a second support assembly disposed on the base and accommodating the head of the object, wherein the second support assembly may comprise a support block extending upward from the base, a pair of headgear mounted on the support block and positioned in the width direction, and a mask unit disposed between the pair of headgear.

[0013] Additionally, the mask unit may comprise a stand extending upward from the base, an arm unit connected to the stand and having at least one arm, a support plate rotatably installed on the arm unit, and a mask mounted on the support plate. Effects of the invention

[0014] The stereotactic device according to an embodiment of the present invention accommodates an animal test subject and can fix the head and body of the subject, and in particular is configured to allow adjustment of the head and neck angle of the subject, thereby facilitating operations such as drilling the skull or inserting a needle required for brain research and experiments.

[0015] In addition, since the portion accommodating the subject can be adjusted to a predetermined range depending on the body size or skull size of the subject, the embodiments of the present invention can be used on primate individuals of relatively diverse species and ages. Brief explanation of the drawing

[0016] FIG. 1 is a drawing illustrating a positioning device according to one embodiment of the present invention. Figure 2 is a drawing illustrating the first support assembly of Figure 1. Figure 3 is an enlarged view of part III of Figure 1. Figure 4 is an exploded view of the positioning device of Figure 1. Figure 5 is a drawing for explaining a method of adjusting the angle of the first support assembly of Figure 2. Figure 6 is a photograph showing the usage state of the stereotactic device of Figure 1. Specific details for implementing the invention

[0017] The present invention is capable of various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various forms.

[0018] Hereinafter, the following embodiments will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted.

[0019] In the drawings, parts unrelated to the explanation have been omitted to clearly explain the invention, and similar parts throughout the specification have been given similar reference numerals.

[0020] In the following embodiments, terms such as first, second, etc. are used not in a limiting sense, but for the purpose of distinguishing one component from another.

[0021] In the following embodiments, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0022] In the following examples, terms such as "include" or "have" mean that the features or components described in the specification are present, and do not preclude the possibility that one or more other features or components may be added.

[0023] In the following embodiments, when a part such as a unit, area, or component is described as being on or above another part, it includes not only cases where it is directly on top of another part, but also cases where another unit, area, or component is interposed in between.

[0024] In the following embodiments, terms such as "connect" or "combine" do not necessarily imply a direct and / or fixed connection or combination of two members unless the context clearly indicates otherwise, nor do they exclude the interposition of another member between the two members.

[0025] In the drawings, the size of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, so the following embodiments are not necessarily limited to those illustrated.

[0026] FIG. 1 is a drawing illustrating a positioning device according to one embodiment of the present invention.

[0027] Referring to FIG. 1, the positioning device (1) is a device that accommodates and fixes the body of an experimental subject and may include a base (100), a first support assembly (200), a second support assembly (300), and a guide part (400).

[0028] A first support assembly (200), a second support assembly (300), and a guide part (400) may be disposed on the upper surface of the base (100).

[0029] The base (100) may further include a handle portion (101) that is coupled to the side. The user can easily move the positioning device (1) using the handle portion (101). FIG. 1 illustrates an embodiment in which the handle portion (101) is positioned at each corner of the base (100), but is not limited thereto and can be configured in various ways depending on the size or position of the base (100).

[0030] The base (100) can provide a space in which the first support assembly (200), the second support assembly (300), and the guide part (400) can be installed.

[0031] In one embodiment, the base portion (100) may have a roughly plate shape, but may have a shape in which a plurality of plates are assembled as shown in the drawing.

[0032] In another embodiment, the base portion (100) may have a first support assembly (200), a second support assembly (300), and a guide portion (400) arranged on a single plate. For convenience of explanation, the following description will focus on an embodiment in which the base (100) has a plurality of plates. The base (100) may be provided with a first plate (110) and a second plate (120).

[0033] The first plate (110) and the second plate (120) are detachably connected and can be separated and moved apart from each other.

[0034] According to one embodiment, the first support assembly (200) may be placed on the second plate (120). The first support assembly (200) may be placed on the second plate (120), and the second support assembly (300) may be placed on the first plate (110).

[0035] The user can separate the second plate (120), on which the first support assembly (200) is placed, from the first plate (110) and move it. The separated first support assembly (200) and second plate (120) can be used independently and can be installed and used on another plate or device.

[0036] The first support assembly (200) can accommodate the body of the object. The second support assembly (300) is positioned adjacent to the first support assembly (200) and can accommodate the head of the object.

[0037] The first support assembly (200) and the second support assembly (200) may be provided to be partially adjustable according to the size and shape of the object. By adjusting the first support assembly (200) and the second support assembly (300), the orientation device (1) can accommodate various objects.

[0038] In an optional embodiment, the positioning device (1) may have a guide portion (400). The guide portion (400) may be positioned adjacent to the first support assembly (200) and the second support assembly (300).

[0039] The guide section (400) may be equipped with a different type of device, and the guide section (400) may guide the path along which the different type of device moves. For example, the different type of device may be a drilling device or a brain stereotactic injection device.

[0040] The guide section (400) can be provided to facilitate access to the object accommodated in the first support assembly (200) and the second support assembly (300) by the heterogeneous device.

[0041] As described above, the positioning device (1) can improve the accuracy and efficiency of animal experiments by adjusting the first support assembly (200), the second support assembly (300), and the guide part (400).

[0042] In one embodiment, the stereotactic device (1) can be used in compatibility with MRI imaging equipment.

[0043] The stereotactic device (1) can be introduced into the interior of the MRI imaging equipment and configured to be suitable for obtaining imaging images of the subject. Specifically, the experimenter can identify the drilling location or the needle injection location in the skull of the subject through the MRI imaging images, and minimize damage to surrounding tissues in the area.

[0044] FIG. 2 is a drawing illustrating the first support assembly of FIG. 1. In FIG. 2, only the first support assembly (200) placed on the base (100) is shown separately in order to clearly explain each part of the first support assembly (200).

[0045] Referring to FIG. 2, a first support assembly (200) may be placed on top of a base (100). The base (100) may be provided with a first plate (110) and a second plate (120) placed on top of it.

[0046] The second plate (120) may include an adjustment slit (121) on one side. The adjustment slits (121) are arranged in pairs on both sides of the second plate (120) and may have a preset length. The adjustment slits (121) may be formed in a shape that extends along the X-axis direction.

[0047] The second plate (120) can be assembled to the first plate (110) by means of a fixing member (122). The fixing member (122) is rotatably inserted into an adjustment slit (121) and can be connected to the first plate (110). At this time, the second plate (120) can be linearly moved in the X-axis direction by the extension length of the adjustment slit (121) so that its position on the first plate (110) can be adjusted. Depending on the position adjustment of the second plate (120), the position of the first support assembly (200) placed on the second plate (120) can be adjusted.

[0048] The first support assembly (200) is placed on the base (100) and can accommodate the body of the object. In one embodiment, the first support assembly (200) may include a first frame (210), a second prime (220), a sliding rail (230), a seat (240), and a strap (250).

[0049] The first frame (210) is positioned on the second plate (120), and one end can be rotatably and slidably connected to the sliding rail (230). Since the first frame (210) is rotatably and slidably connected to the rail (230), the position of the first frame (210) in the X-axis direction can be adjusted, and the angle of inclination of the first frame (210) can be adjusted.

[0050] The first frame (210) may be provided to accommodate the body of the object. Specifically, the first frame (210) may allow the object to be supported in a prone position. The first frame (210) may be any shape that supports the body of the object, but it is illustrated in the drawing as having a body shape that extends in the X-axis direction.

[0051] In one embodiment, the first frame (210) may be provided with an upper body (211) and a lower body (212). The upper body (211) may support the upper part of the body of the object, and the lower body (212) may support the lower part of the body of the object. For example, the upper body (211) may be in contact with the head, neck, and arm portions of the object, and the lower body (212) may be in contact with the abdomen portion of the object.

[0052] The end of the lower body (212) can be connected to the sliding rail (230) by the first sliding member (213). The end of the lower body (212) is inserted into a pair of opposing sliding rails (230), and the first sliding member (213) extends in the Y-axis direction and can be inserted into the guide hole of the sliding rail (230).

[0053] The first sliding member (213) rotates along the sliding rail (230), so that one end of the first frame (210) can slide in the X-axis direction. Thus, the position of the first frame (210) in the X-axis direction is adjusted, and at the same time, the angle of inclination of the first frame (210) can be adjusted.

[0054] The second frame (220) may be rotatably positioned between the first frame (210) and the second plate (120). One end of the second frame (220) may be rotatably connected to the second plate (120), and the other end may be rotatably connected to the first frame (210).

[0055] The second plate (120) may further have an assembly fastening portion (123) protruding from the upper surface. One end of the second frame (220) may be rotatably connected to the assembly fastening portion (123) by a first hinge (221). The first hinge (221) can adjust the angle between the second plate (120) and the second frame (220).

[0056] The other end of the second frame (220) can be rotatably connected to the first frame (210) by a second hinge (222). The second hinge (222) can adjust the angle between the first frame (210) and the second frame (220).

[0057] Thus, the first support assembly (200) can adjust the angle of the first frame (210) relative to the base (100) by means of the first hinge (221), the second hinge (222), and the first sliding member (213).

[0058] The sliding rail (230) is mounted on the base (100) and can be extended in one direction. The sliding rail (230) can be placed on the second plate (120).

[0059] The sliding rails (230) are provided in pairs and can be arranged to face each other. The sliding rails (230) have guide holes, and a first sliding member (213) and a second sliding member (243) can be inserted into the guide holes.

[0060] In an optional embodiment, the first sliding member (213) and the second sliding member (243) may be fixed in position on the sliding rail (230) by a position fixing member (not shown). The position fixing member (not shown) may be a member that forms friction, such as rubber or silicone, or may be provided with a screw, bolt, etc., to fix the position of the first sliding member (213) and the second sliding member (243).

[0061] One end of the seat (240) is rotatably and slidably connected to the sliding rail (230) and can be positioned adjacent to the first frame (210). The seat (240) can be positioned at the rear of the first frame (210).

[0062] The seat (240) may be provided to support a part of the body of the object when the body of the object is received in the first frame (210). The seat (240) may support the body of the object together with the first frame (210) to fix the posture of the object.

[0063] In one embodiment, the sheet (240) may be provided with a support portion (241) and a leg portion (242).

[0064] The support portion (241) can support the lower part of the body of the object. Specifically, the support portion (241) can support the buttocks of the object to fix the object.

[0065] The leg portion (242) protrudes from the bottom surface of the support portion (241) and can be positioned so that its end is inserted into a pair of sliding rails (230). A second sliding member (243) is installed at the end of the leg portion (242), and the second sliding member (243) can be inserted into a guide hole of a pair of sliding rails (230).

[0066] The second sliding member (243) rotates along the sliding rail (230), so that one end of the seat (240) can slide in the X-axis direction.

[0067] A strap (250) may be positioned on one side of the first frame (210). At least one strap (250) may be provided to secure an object to the first frame (210).

[0068] In one embodiment, a pair of straps (250) may be provided and installed on both sides of the first frame (210), and the pair of straps (250) may wrap around and connect the body of the object.

[0069] In one embodiment, the straps (250) may be provided in multiple numbers and installed separately in multiple areas of the first frame (210). For example, a first strap (251) may be placed on the upper body (211) of the first frame (210), and a second strap (252) may be placed on the lower body (212). The first strap (251) may secure the arm portion of the object, and the second strap (252) may secure the chest or abdomen of the object.

[0070] FIG. 3 is an enlarged view of part III of FIG. 1, and FIG. 4 is an exploded perspective view of the positioning device of FIG. 1.

[0071] Hereinafter, with reference to FIGS. 3 and FIGS. 4, each part of the second support assembly (300) and the guide part (400) will be clearly explained. For this purpose, the first support assembly (200) is omitted in FIGS. 3.

[0072] Referring to FIGS. 3 and 4, the second support assembly (300) and the guide part (400) can be placed on the base (100).

[0073] The second support assembly (300) is adjacent to the first support assembly (200) and can accommodate the head of the object.

[0074] In one embodiment, the second support assembly (300) may include a support block (310), a head gear (320), and a mask unit (330).

[0075] Support blocks (310) are provided in pairs and can be positioned on both sides of the head of the object. A head gear (320) is disposed on the support blocks (310) to provide a space into which the head of the object is inserted.

[0076] In one embodiment, the support block (310) may be provided with a first support block (311) and a second support block (312).

[0077] The first support block (311) is installed on the base (100) and may be provided in a column shape that protrudes in the Z-axis direction. The first support block (311) may have an approximate "L" shape, with a portion supported on the base (100) and another portion extending in the height direction.

[0078] One side of the second support block (312) may be connected to the first support block (311). The second support block (312) is positioned on the side of the first support block (311), and the height of the headgear (320) can be adjusted by adjusting its position. That is, the total height of the support block (310) can be determined according to the position in which the second support block (312) is connected to the first support block (311).

[0079] The head gear (320) is mounted on the support block (310) and may be provided as a pair. The head gear (320) may be installed on the upper part of the second support block (310) by means of a gear connection part (321).

[0080] The headgear (320) can be fixed to the head of the object by contacting both ears of the object and operating the gear connection part (321). However, the headgear (320) is not limited to fixing only the head of the object, and can support various parts of the object depending on the type, size, and purpose of use of the positioning device (1).

[0081] The head gear (320) can be adjusted in position along the Z-axis according to the position where the second support block (312) is coupled to the first support block (311).

[0082] In an optional embodiment, the second support assembly (300) may include a mask unit (330). The mask unit (330) may be positioned between the pair of headgear (320).

[0083] In one embodiment, the mask unit (330) may include a stand (331), an arm unit (332), a support plate (333), and a mask (334).

[0084] The stand (331) is installed on the base (100) and may be provided in a shape extending in the Z-axis direction. The stand (331) may be positioned between a pair of support blocks (310).

[0085] The arm unit (332) is connected to the stand (331) and may have at least one arm. When multiple arms are provided, each of the multiple arms may be rotatably connected. However, for convenience of explanation, the following description will focus on an embodiment having a single arm as shown in FIG. 4.

[0086] The support plate (333) can be rotatably installed at the end of the arm unit (332). By rotating the support plate (333) and the arm unit (332), the position and angle of the mask (334) can be adjusted.

[0087] The mask (334) can be mounted on the support plate (333). The position of the mask (334) can be determined by manipulating the arm unit (332) and the support plate (333).

[0088] The mask (334) may have a concave groove into which the face of the subject is inserted. The mask (334) may be replaceably mounted on the support plate (333).

[0089] A portion of the head of the subject is inserted into the mask (334), and the subject can be anesthetized by anesthetic gas supplied through an external hose.

[0090] The guide portion (400) can be positioned adjacent to the second support assembly (300).

[0091] In one embodiment, the guide portion (400) may be installed outside the second support assembly (300), as shown in FIG. 4. However, the position of the guide portion (400) is not limited thereto and may be set in various ways depending on the purpose of use of the positioning device (1).

[0092] In one embodiment, the guide section (400) may be provided with a guide frame (410), a linear movement unit (420), and a movement block (430).

[0093] The guide section (400) can guide the movement path of the movement block (430) by installing a linear movement unit (420) through the upper shape of the guide frame (410).

[0094] The guide frame (410) can be mounted on the upper surface of the base (100). The guide frame (410) can be positionally assembled to the base (100) by means of a plurality of fixing members, such as screws or bolts.

[0095] In one embodiment, as shown in FIG. 3, the guide portion (400) may include a guide frame (410) having an upper portion having an acute angle inclined surface. In this case, the moving block (430) can move along the inclined surface in the X-axis direction and the Z-axis direction.

[0096] As another example, the guide section (400-1) includes a guide frame (410-1) whose upper portion is parallel to the base (100), and the moving block (340) can only move in the X-axis direction.

[0097] The linear movement unit (420) may be equipped with a knob (421), a lead screw (422), a guide shaft (423), and a scale bar (424).

[0098] The knob (421) can rotate the lead screw (422) by operation of the user. The knob (421) can be mounted on one end of the lead screw (422).

[0099] The lead screw (422) extends in one direction and can be rotated by operating the knob (421). The lead screw (422) has threads on its outer surface, and said threads can mesh with the threads of the moving block (430). Rotation of the lead screw (422) can move the moving block (430) linearly.

[0100] The guide shaft (423) is into which the moving block (430) is inserted and can guide the linear movement of the moving block (430). The guide shaft (423) can be positioned adjacent to the lead screw (422).

[0101] When the user operates the knob (421) and the lead screw (422) rotates, the moving block (340) can move along the lead screw (422) and the guide rail (423).

[0102] The scale bar (424) can indicate the degree to which the moving block (340) has moved relative to the object, thereby indicating the position of the moving block (340).

[0103] The moving block (430) is a part on which a different type of device is mounted, and the different type of device may be a drilling device or a brain stereotactic injection device.

[0104] A portion of the movable block (430) may be movably connected to the lead screw (422). The movable block (430) is screw-engaged with the lead screw (422) and can move forward or backward by the rotation of the lead screw (422).

[0105] Referring again to FIG. 4, the base (100) may include a first installation part (111) where a first support assembly (200) is installed, a second installation part (112) where a second support assembly (300) is installed, a mask installation part (113) where a mask unit (330) is installed, and a guide installation part (114) where a guide part (400) is installed.

[0106] A fixing member (122) is inserted into the first installation part (111), and a first support assembly (200) mounted on the second plate (120) can be installed on the base (100).

[0107] The second installation part (112) is provided with a guide groove extending a predetermined length along the X-axis corresponding to the lower shape of the first support block (311), and can define an area where the second support assembly (300) can be installed. The second support assembly (300) can be installed by screwing the lower part of the first support block (311) into the second installation part (112).

[0108] A stand (331) is screw-coupled to the mask installation part (113) so that a mask unit (330) can be installed.

[0109] The guide installation part (114) is provided with a guide groove that extends for a predetermined length along the X-axis in correspondence with the lower shape of the guide frame (410), and can define an area where the guide part (400) can be installed. The guide part (400) can be installed by screw-coupling the guide frame (410) into the guide installation part (114).

[0110] FIG. 5 is a drawing for explaining a method of adjusting the angle of the first support assembly of FIG. 2, and FIG. 6 is a photograph showing the usage state of the positioning device of FIG. 1.

[0111] Referring to FIGS. 5 and 6, we intend to explain the change in the fixed position of the object according to the adjustment of the first support assembly (200).

[0112] In FIG. 5, with respect to the first plate (110), (A) represents the case where the angle of the first frame (210) is not adjusted, (B) represents the case where the angle of the first frame (210) is adjusted to become smaller, and (C) represents the case where the angle of the first frame (210) is adjusted to become larger.

[0113] Comparing (A) and (B) of FIG. 5, the second frame (220) rotates counterclockwise around the first hinge (221). At this time, since one end of the first frame (210) is connected to the sliding rail (230) by the first sliding member (213), the angle between the first frame (210) and the second frame (220) widens, and the first sliding member (213) moves away from the assembly fastening part (123).

[0114] Thus, the angle of the first frame (210) with respect to the first plate (110) can be reduced, and the head of the object placed on the first frame (210) can move downward.

[0115] Comparing (A) and (C) of FIG. 5, the second frame (220) rotates clockwise around the first hinge (221). At this time, since one end of the first frame (210) is connected to the sliding rail (230) by the first sliding member (213), the angle between the first frame (210) and the second frame (220) becomes smaller, and the first sliding member (213) moves in a direction closer to the assembly fastening part (123).

[0116] Thus, the angle of the first frame (210) with respect to the first plate (110) can be increased, and the head of the object seated on the first frame (210) can move upward.

[0117] Meanwhile, the seat (240) is used by adjusting the angle and position of the support part (241) and the leg part (242) according to the size or posture of the object seated on the first frame (210), although the position of the second sliding member (243) moves together with the first sliding member (213) to change.

[0118] Referring to FIG. 6, the monkey object may have its body supported by the first support assembly (200) and its head supported by the second support assembly (300).

[0119] The positioning device (1) can adjust the position or inclination of the first support assembly (200) according to the size and posture of the object, so that the object can maintain a stable posture. In addition, the positioning device (1) can adjust the position of the second support assembly (300) or the position of the head gear, etc., according to the size and posture of the object, so that the object can maintain a stable posture.

[0120] Since the stereotactic device (1) can stably fix the position of the object and maintain its posture, the stereotactic device (1) can be introduced into the interior of the MRI imaging equipment and is suitablely equipped to obtain an image of the object.

[0121] Specifically, the experimenter can identify the drilling location or the needle injection location in the skull of the subject through the MRI imaging, and minimize damage to surrounding tissues in that area.

[0122] A stereotactic device according to an embodiment of the present invention can accommodate an animal subject for brain research and experimentation and can fix the head and body of the subject.

[0123] In addition, the orientation device according to one embodiment of the present invention can be applied to various objects by adjusting the first support assembly (200) and the second support assembly (300) in consideration of the size, age, and species of the object.

[0124] In addition, the stereotactic device according to one embodiment of the present invention can be used while confirming the target area through MRI imaging equipment during brain experiments, thereby minimizing damage to surrounding tissues.

[0125] In addition, when the stereotactic device according to one embodiment of the present invention is used separately with only the first support assembly (200) that accommodates the body of the object, it is possible to use it with an MRI imaging device equipped with a small-sized coil, and thereby obtain a higher resolution imaging image.

[0126] The present invention has been described with reference to an embodiment illustrated in the accompanying drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims. Explanation of the symbols

[0127] 1: Orthodontic device 100: Bass 200: First support assembly 300: Second support assembly 400: Guide Frame

Claims

Claim 1 A base having a first plate and a second plate that are detachably coupled to each other; a first support assembly disposed on the second plate and accommodating the body of an object; a second support assembly disposed on the first plate and accommodating the head of the object; and a guide portion disposed adjacent to the first support assembly and the second support assembly; wherein the first support assembly is mounted on the second plate and comprises a sliding rail extending in one direction; a first frame accommodating the body of the object and having one end rotatably connected to the sliding rail; and a second frame having one end rotatably connected to the second plate and the other end rotatably connected to the first frame; wherein the second support assembly comprises a support block extending upward from the first plate; a pair of headgears mounted on the support block and positioned in the width direction; and a mask unit disposed between the pair of headgears; and wherein the guide portion comprises a guide frame having an inclined surface at its upper end. A positioning device comprising: a linear movement unit positioned on the upper part of the guide frame and guiding the path of a movement block. Claim 2 A positioning device according to claim 1, further comprising: a base that is inserted into an adjustment slit of the second plate and a fixing member that adjusts the position of the second plate relative to the first plate. Claim 3 The positioning device according to claim 1, further comprising: a first support assembly having one end rotatably connected to the sliding rail and slidably, and a seat disposed adjacent to the first frame. Claim 4 A positioning device according to claim 1, wherein the first support assembly further comprises a strap disposed on the first frame. Claim 5 delete Claim 6 In claim 5, the mask unit comprises: a stand extending upward from the first plate; an arm unit connected to the stand and having at least one arm; a support plate rotatably installed on the arm unit; and a mask mounted on the support plate; a positioning device.

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