Adjustable head position positioning ruler

Abstract

The utility model discloses an adjustable head position positioning ruler, which belongs to the field of medical beauty face measuring appliances and comprises a protractor body, a fine line is connected to the circle center of the protractor body, and the other end of the fine line is connected with a counterweight ball. One end of the protractor body is rotationally connected with a support, the other end of the support is connected with a forehead support used for being attached to the forehead of a patient, the support is located in the middle of the forehead support, and the forehead support is connected with a wearing mechanism used for being worn on the head of the patient. After the protractor is worn, the position of the vertical plane where the protractor body is located is determined and stable; the protractor body can be positioned on the sagittal plane when the protractor is worn by the support, the forehead support and other components each time, so that the protractor has excellent stability and repeatability; and the device is adjustable and can adapt to patients with different facial features.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of medical cosmetic face measuring tools, in particular to an adjustable head position positioning ruler. Background Art

[0002] In 2000, Andrews proposed the "Six Elements of Oral-Maxillofacial Coordination" correction system, which is dominated by the three-dimensional harmony and beauty of the mouth, jaw and face. Orthodontists can directly measure the anterior-posterior position relationship between the frontal border of the forehead and the target frontal border under the condition of the patient's head being in the correct position, which intuitively reflects the three-dimensional relationship between bones, teeth and soft tissues. However, in clinical work, the patient's body position when taking the lateral view cannot be guaranteed to be exactly in the natural head position. At the same time, it is difficult for doctors to accurately match the natural head position of the patient observed in the clinic with the head position of the patient's lateral view, which leads to deviations in the positioning of the FALL line, GALL line and the six-element analysis results. Therefore, it is necessary to provide a standard to characterize the natural head position. In the prior art, a semicircular protractor is usually used to measure the FALL line or GALL line of the human face. Simply put, it is to measure the angle between the line between the chin and the tip of the nose and the vertical line of the human face, or the angle between the line between the chin and the lip and the vertical line, and use this as a standard to determine the natural head position of the patient.

[0003] For example, a patent with the authorization announcement number CN 219461146 U discloses a head correction soft tissue protractor. On the basis of an ordinary semicircular protractor, the center of the protractor is found and a thin wire that can rotate freely at the center of the protractor is fixed. A small lead ball is hung at the lower end of the thin wire. When the angle is tilted, the lead ball will drive the thin wire to always remain in a vertical downward state, so that a more accurate reading than the scale scale can be clearly observed through the magnifying glass at the lower end of the limit plate, and the limit plate is used to limit the thin wire to prevent the thin wire from getting tangled or knotted when the protractor is not in use. However, existing head position positioning rulers such as the aforementioned head correction soft tissue protractor have the following problems:

[0004] (1) The head position ruler should be measured perpendicular to the horizontal plane. In the current measurement method, the ideal natural head position is determined subjectively by the surgeon, and the position of the head position ruler is also determined by the surgeon visually, which lacks stability and repeatability.

[0005] (2) The connector between the thin wire and the lead ball may leave the head scale during the measurement process without being discovered by the surgeon in time, causing the actual measurement plane to deviate from the sagittal plane.

[0006] (3) The measurement of the head ruler uses the aesthetic line formed by the apex of the nose and the apex of the chin (or the line connecting the apex of the soft tissue chin and the most protruding point of the upper and lower lips) as the reference line. During measurement, it is difficult to fix the two points on the patient's profile. If the points are not fixed accurately or the ruler shakes during the reading process, errors will occur. Utility Model Content

[0007] The technical solution of the utility model aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. It mainly provides an adjustable head positioning ruler to solve the technical problems mentioned in the above background technology that the placement position of the existing head positioning ruler when used is visually observed by the operator and lacks stability and repeatability.

[0008] The technical solution adopted by the utility model to solve the above technical problems is:

[0009] An adjustable head positioning ruler comprises a protractor body, a thin line is connected at the center of the protractor body, and a weighted ball is connected at the other end of the thin line; one end of the protractor body is rotatably connected to a bracket, the other end of the bracket is connected to a forehead rest for attaching to the patient's forehead, and the bracket is located in the middle of the forehead rest, and the forehead rest is connected to a wearing mechanism for wearing on the patient's head.

[0010] Furthermore, the protractor body and the bracket are connected by bolts.

[0011] Furthermore, a sliding connection block is fixed to the middle of the forehead rest, and the bracket passes through the sliding connection block. The sliding connection block is provided with a through hole just for the bracket to pass through.

[0012] Furthermore, a fastening screw for locking the bracket is connected to one side of the sliding connection block.

[0013] Furthermore, a level gauge arranged horizontally is installed on the sliding connection block.

[0014] Furthermore, the wearing mechanism includes a headband connected to a forehead support.

[0015] Furthermore, the bracket includes two symmetrically arranged connecting bars, the two connecting bars are respectively located on both sides of the protractor body, and the ends of the two connecting bars facing away from the protractor body are commonly connected to a fixing block.

[0016] Furthermore, an arc groove with its own center as the center is formed on the protractor body, and a limit block is slidably connected in the arc groove. The limit block extends from the side of the protractor body facing away from the fine line to the outside of the arc contour of the protractor body and bends to extend to the side where the fine line is located, and a through hole is formed on the limit block for the fine line to pass through.

[0017] Furthermore, an adjusting slider is slidably connected to the bracket, an adjusting rod is penetrated through the adjusting slider, and one end of the adjusting rod is connected to a nose pad.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] (1) The utility model is based on a protractor provided with a bracket and a wearing mechanism for wearing on the patient's head. When in use, after wearing, the position of the vertical plane where the protractor body is located is determined and stable; and according to the bracket, forehead support and other components, the protractor body can be located on the sagittal plane each time it is worn, so the head positioning ruler has excellent stability and repeatability.

[0020] (2) After the wearer has worn the goniometer, the position of the goniometer body is fixed and stable, and the goniometer body does not shake during reading, thereby avoiding errors caused by ruler shaking, and measuring different aesthetic lines of the patient in the natural head position.

[0021] (3) The utility model is provided with a sliding connection block on the forehead support, so that the bracket can move up and down, driving the protractor body to adjust its position, so that the protractor body fits the human facial tissue, and the head positioning ruler can be adapted to patients with different facial features.

[0022] (4) In the optimized solution of the utility model, a limit block is provided which can move along the arc edge of the protractor body, and the thin wire passes through the limit block. When in use, the limit block can limit the position of the thin wire, and cooperate with the upper end of the thin wire to be stabilized at the center of the protractor body, so that the thin wire can be closely attached to the surface of the protractor body, thereby preventing the thin wire from leaving the head scale during the measurement process, causing the actual measurement surface to deviate from the sagittal plane.

[0023] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model in Example 1;

[0025] Figure 2 It is a side view of the utility model in embodiment 1;

[0026] Figure 3 This is a front view of the utility model in Example 1, in which the headband is not shown;

[0027] Figure 4 This is a front view of the utility model in Example 2, in which the headband is not shown;

[0028] Figure 5 It is a side view of the utility model in embodiment 3.

[0029] Description of reference numerals:

[0030] 1. Protractor body; 11. Arc groove; 2. Bracket; 21. Connecting strip; 3. Sliding connecting block; 4. Forehead rest; 5. Headband; 6. Fixing block; 7. Level; 8. Bolt; 9. Thin wire; 10. Counterweight ball; 20. Fastening screw; 30. Limit block; 40. Adjusting slider; 50. Adjusting rod; 60. Nose pad. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] Example 1

[0035] Please refer to the attached Figure 1-Figure 3 An adjustable head position ruler includes a protractor body 1, a thin wire 9 is connected at the center of the protractor body 1, and a weight ball 10 is connected at the other end of the thin wire 9; one end of the protractor body 1 is rotatably connected to a bracket 2, and the protractor body 1 and the bracket 2 are connected by a bolt 8. The bolt 8 is a clevis bolt, and after loosening its nut, the protractor body 1 can be deflected around the bolt 8 relative to the bracket 2, and the nut can be tightened after being adjusted into place; the other end of the bracket 2 is connected to a forehead support 4 for attaching to the patient's forehead, and the bracket 2 is located in the middle of the forehead support 4, and the forehead support 4 is connected to a wearing mechanism for wearing on the patient's head.

[0036] When in use, the device is worn on the patient's head through the wearing mechanism, and the forehead support 4 is attached to the patient's forehead (the lower edge of the forehead support 4 can assist in visually checking whether the device is parallel to the line connecting the two eyes), the bracket 2 is located on the sagittal plane, and the protractor body 1 is also located on the sagittal plane. The doctor deflects the protractor body 1 relative to the bracket 2 until the straight edge of the protractor body 1 is attached to the patient's nose vertex and chin vertex (or the most protruding point between the soft tissue chin vertex and the upper and lower lips), and the weighted ball 10 will make the thin line 9 pulled by it perpendicular to the horizon due to gravity. The angle corresponding to the scale line on the protractor body 1 where the thin line 9 is located is the angle between the patient's aesthetic line and the thin line 9 in the natural head position. Record the angle, and use this angle as the standard for the patient's natural head position. In the lateral view, it can be clearly determined that the vertical line corresponding to the thin line is transferred from the reference line and the obtained angle, and then the patient's natural head position is determined. This method can transfer the angle of the patient's aesthetic line relative to the vertical line when the head is in the normal position to the lateral view. When using a computer to determine the X-rays taken by the imaging department and the photos taken by other doctors, the profile can be the same as the initial angle determined by the clinician, so that communication errors can be reduced. In addition, since the head positioning ruler is worn on the patient's head, after wearing, the position of the vertical plane where the protractor body 1 is located is determined and stable, and the protractor body 1 will not shake during the reading process, which can avoid errors caused by the shaking of the ruler, and can successively measure the different aesthetic lines of the patient in the natural head position; and according to the components such as the bracket 2 and the forehead support 4, the protractor body 1 can be located on the sagittal plane each time it is worn, so the head positioning ruler has excellent stability and repeatability.

[0037] The bracket 2 includes two symmetrically arranged connecting bars 21, which are respectively located on both sides of the protractor body 1, and the ends of the two connecting bars 21 facing away from the protractor body 1 are commonly connected to a fixing block 6. The connecting bar 21 includes two sections with different slopes, and the slope of the upper section is smaller than the slope of the lower section, so that the bracket 2 occupies a smaller space range.

[0038] A sliding connection block 3 is fixed to the middle of the forehead support 4, and the bracket 2 passes through the sliding connection block 3. The sliding connection block 3 is provided with a through hole just for the bracket 2 to pass through. The two are positioned by friction to prevent the bracket 2 from accidentally moving relative to the sliding connection block 3. This arrangement enables the bracket 2 to move up and down relative to the sliding connection block 3, thereby adjusting the position of the protractor body 1, so that the protractor body 1 fits the human facial tissue, and enables the head position positioning ruler to adapt to different patients.

[0039] A level 7 is installed on the sliding connection block 3. The level 7 can ensure that the forehead support 4 is placed horizontally to prevent the patient's head from tilting left and right, thereby ensuring that the protractor body 1 is located on the sagittal plane, thereby further ensuring the accuracy of the determined patient's natural head position.

[0040] The wearing mechanism comprises a headband 5 connected to the forehead support 4. The headband 5 is an elastic band and can be adapted to the heads of individuals of different groups of people.

[0041] Example 2

[0042] The difference between this embodiment and embodiment 1 is that:

[0043] Please refer to the attached Figure 4 A fastening screw 20 for locking the bracket 2 is connected to one side of the sliding connection block 3. The fastening screw 20 can be used to press the bracket 2 after the bracket 2 moves relative to the sliding connection block 3, ensuring that the position of the bracket 2 is stable.

[0044] Please refer to the attached Figure 2 and Figure 4 The protractor body 1 is provided with an arc groove 11 with its own center as the center, and a limit block 30 is slidably connected in the arc groove 11. The limit block 30 extends from the side of the protractor body 1 facing away from the thin wire 9 to the outside of the arc contour of the protractor body 1 and bends to extend to the side where the thin wire 9 is located, and a through hole is provided on the limit block 30 for the thin wire 9 to pass through. The limit block 30 can limit the position of the thin wire 9, and cooperate with the upper end of the thin wire 9 to be stabilized at the center of the protractor body 1, so that the thin wire 9 can be closely attached to the surface of the protractor body 1, thereby preventing the thin wire 9 from leaving the head scale during the measurement process, causing the actual measurement surface to deviate from the sagittal plane.

[0045] The rest is the same as in Example 1.

[0046] Example 3

[0047] The difference between this embodiment and embodiment 1 is that:

[0048] An adjusting slider 40 is slidably connected to the bracket 2, and a locking screw for pressing the bracket 2 is connected to one side of the adjusting slider 40 to lock the position of the adjusting slider 40 relative to the bracket 2; an adjusting rod 50 is penetrated through the adjusting slider 40, and a nose pad 60 is connected to one end of the adjusting rod 50. The adjusting rod 50 is threadedly connected to the adjusting slider 40. At this time, the adjusting rod 50 and the nose pad 60 are rotatably connected through a bearing.

[0049] When in use, the nose pad 60 is adjusted to be just placed on the user's nose by adjusting the positions of the adjusting slider 40 and the adjusting rod 50, so as to support the bracket 2 and enhance the stability of the head positioning ruler. The distance between the nose pad 60 and the bracket 2 in the sagittal plane can be adjusted by adjusting the adjusting rod 50, so as to adapt to different patients.

[0050] The rest is the same as in Example 1.

[0051] Example 4

[0052] The difference between this embodiment and embodiment 3 is that:

[0053] The adjusting rod 50 is slidably connected to the adjusting slider 40 and locked in place by a locking structure. At this time, the adjusting rod 50 is fixedly connected to the nose pad 60 .

[0054] The rest is the same as in Example 3.

[0055] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An adjustable head position ruler, comprising a protractor body (1), a thin wire (9) connected at the center of the protractor body (1), and a weighted ball (10) connected at the other end of the thin wire (9); characterized in that: One end of the protractor body (1) is rotatably connected to a bracket (2), the other end of the bracket (2) is connected to a forehead support (4) for attaching to the patient's forehead, the bracket (2) is located in the middle of the forehead support (4), and the forehead support (4) is connected to a wearing mechanism for being worn on the patient's head.

2. The adjustable head position ruler according to claim 1, characterized in that: The protractor body (1) and the bracket (2) are connected via bolts (8).

3. The adjustable head position ruler according to claim 1, characterized in that: A sliding connection block (3) is fixed to the middle of the forehead support (4), and the bracket (2) passes through the sliding connection block (3). The sliding connection block (3) is provided with a through hole just enough for the bracket (2) to pass through.

4. The adjustable head position ruler according to claim 3, characterized in that: A fastening screw (20) for locking the bracket (2) is connected to one side of the sliding connection block (3).

5. The adjustable head position ruler according to claim 3, characterized in that: A level gauge (7) arranged horizontally is installed on the sliding connection block (3).

6. The adjustable head position ruler according to claim 1, characterized in that: The wearing mechanism comprises a headband (5) connected to a forehead support (4).

7. The adjustable head position ruler according to claim 1, characterized in that: The bracket (2) comprises two symmetrically arranged connecting bars (21), the two connecting bars (21) being respectively located on both sides of the protractor body (1), and the ends of the two connecting bars (21) facing away from the protractor body (1) are commonly connected to a fixing block (6).

8. The adjustable head position ruler according to claim 1, characterized in that: The protractor body (1) is provided with an arc groove (11) with its own circle center as the circle center, and a limit block (30) is slidably connected in the arc groove (11). The limit block (30) extends from the side of the protractor body (1) facing away from the thin line (9) to the outside of the arc contour of the protractor body (1) and bends to extend to the side where the thin line (9) is located, and a through hole is provided on the limit block (30) for the thin line (9) to pass through.

9. The adjustable head position ruler according to claim 1, characterized in that: The bracket (2) is slidably connected with an adjusting slider (40), an adjusting rod (50) is penetrated through the adjusting slider (40), and one end of the adjusting rod (50) is connected with a nose pad (60).

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