Positioning device and method for natural head position of virtual skull model

A positioning device, a natural technology, applied in the field of clinical medicine, can solve problems such as discomfort, affecting the accuracy of digital design, and inaccurate NHP records

Pending Publication Date: 2021-11-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, head accessories will inevitably bring discomfort or extra weight to the head, resulting in inaccurate NHP records, which in turn affect the accuracy of preoperative digital design to varying degrees

Method used

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  • Positioning device and method for natural head position of virtual skull model
  • Positioning device and method for natural head position of virtual skull model
  • Positioning device and method for natural head position of virtual skull model

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specific Embodiment approach

[0031] In order to clearly and completely describe the technical solution of the present invention and its specific working process, in conjunction with the accompanying drawings, the specific implementation of the present invention is as follows:

[0032] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

[0033] In the present i...

Embodiment 1

[0036] Such as figure 1 As shown, the embodiment of the present invention provides a positioning device for the natural head position of a virtual skull model, including a curved facebow 1, an electromagnet automatic tracing pen 2 and a bracket 3; the bottom end of the bracket 3 is fixed on the horizontal ground Above, the curved facebow 1 is fixed on the top of a plurality of brackets 3, the height of the brackets 3 can be adjusted, and a plurality of electromagnet automatic tracing pens 2 are evenly fixed on the arcuate facebow 1, and the electromagnet automatic tracing pen 2 realizes the The natural head position of the human body.

[0037] Such as figure 2 and image 3 As shown, the arc-shaped facebow 1 is composed of a semicircular arc-shaped slide rail 4 and a base 5; a universal level 7 is placed in the base 5, and a screw hole 6 is provided on the edge of the base 5 for connecting with the universal Spirit level 7 threaded connection.

[0038] Such as Figure 4 a...

Embodiment 2

[0045] The dimension parameter of the positioning device of a kind of virtual skull model natural head position of the present invention is as follows:

[0046] The semi-circular arc-shaped slide rail 4 has an inner diameter of 120mm, an outer diameter of 160mm, a height of 10mm, and a middle rail width of 10mm; the width and length of the base 5 are 20mm and 30mm, and the height is 10mm; the universal level 7 has a diameter of 15mm and a thickness of 5mm; The corresponding angle of the slider 8 is 15°, and the length is about 31mm.

[0047] The pen cover 13 of the electromagnet automatic tracing pen 2 is a cuboid structure, the length is 55mm, the width is 20mm, and the height is 25mm; the metal pen core 14 is a cylinder structure, the total length is 65mm, and the diameter is 8mm. The hollow slide rail 11 below the pen cover 13 has a height of 10mm and a length of 60mm.

[0048] In the main body structure of support 3, inner rod 20 height is 1000mm, and diameter is 20mm and...

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Abstract

The invention discloses a positioning device and method for a natural head position of a virtual skull model, and belongs to the technical field of clinical medicines. The positioning device comprises an arc-shaped surface bow, a plurality of electromagnet automatic tracing pens and a plurality of supports; and the arc-shaped surface bow is fixed at the top ends of the multiple supports, the heights of the supports can be adjusted, and the multiple electromagnet automatic tracing pens are uniformly fixed on the arc-shaped surface bow. Before use, the pen points of the automatic electromagnet tracing pens are coated with X-ray developing paste, pen cores are compressed after being powered on, during use, a patient is advised to be adjusted to a natural head position state, the arc-shaped surface bow is adjusted to the height of a lower orbital plane of the patient, and the pen points are one centimeter away from the skin; and the power is cut off, the pen cores are popped out by a spring, the electromagnet automatic tracing pens extend and trace mark points capable of being developed under X rays on the lower part of the orbital of the patient, and natural head position recording is completed. The application of the device for accurately determining the natural head position of the virtual head model provides more accurate and scientific guarantee for determining the natural head position of the virtual head model during preoperative digital design of orthognathic surgery.

Description

technical field [0001] The invention belongs to the technical field of clinical medicine, and in particular relates to a positioning device and a positioning method for the natural head position of a virtual skull model. Background technique [0002] The natural head position (NHP) is a water reference plane located outside the cranium, which is different from the intracranial reference plane. In the 1950s, NHP was introduced into the field of human maxillofacial morphology research. It is currently recognized as the head position that best shows the aesthetic expression of people in their natural state, and is the best reference for evaluating facial appearance. The standard definition of natural head position is: when the subject is upright and in a completely relaxed state, the eyes are looking horizontally at the eyes at infinity in front of them or in the mirror without any external interference, the position of the subject's head , is a standard, stable, and repeatabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03A61B6/04A61B90/00
CPCA61B6/032A61B6/04A61B90/39A61B2090/3966
Inventor 王琳吴国民陈楷谢昆鹏胡向锦庞婉毓史红丽
Owner JILIN UNIV
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