CN219354184U - Craniofacial guide plate capable of assisting head-mounted augmented reality display navigation - Google Patents
Craniofacial guide plate capable of assisting head-mounted augmented reality display navigation Download PDFInfo
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- CN219354184U CN219354184U CN202221875792.3U CN202221875792U CN219354184U CN 219354184 U CN219354184 U CN 219354184U CN 202221875792 U CN202221875792 U CN 202221875792U CN 219354184 U CN219354184 U CN 219354184U
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Abstract
The utility model discloses a craniofacial guide plate capable of assisting in navigation of a head-mounted augmented reality display. The base is used for being fixed with the skull, and is a shell which is completely attached to the skull; the mounting part is fixed with the base; the visible light identification marker is fixed on the mounting portion. The utility model can quickly and efficiently establish the spatial position relation between the three-dimensional image of the head-mounted augmented reality display and the head of the patient, is convenient, safe and reliable to use, and is beneficial to reducing the operation time and cost of the head operation.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a craniofacial guide plate capable of assisting in navigation of a head-mounted augmented reality display.
Background
The skull operation relates to important structures such as brain functional areas, cranial nerves, venous sinuses and the like, and along with the application of positioning equipment such as nerve navigation and the like in recent years, the precise and minimally invasive neurosurgery concept is realized. However, the nerve guidance device is expensive, occupies space in an operating room, has a complex operation flow, and can increase radiation, prolong operation time, increase cost and the like. Moreover, the doctor's attention and vision need to leave the operation area according to the image guidance on the remote display to perform the operation, and this mode is unfavorable for the high-efficient cooperation of hand and eyes, easily leads to the operator fatigue, inattention, etc.
The augmented reality technology can superimpose virtual images on real objects in real time, allowing a surgeon to complete a cranium surgical operation through image guidance of an augmented reality device. When using the head-mounted augmented reality device, a surgeon can see a real image and a virtual image in an operation area at the same time without moving eyes to an external screen. Since the head-mounted augmented reality device has the advantage of low cost and easy operation, many researches on the augmented reality technology in the skull operation have been recently developed.
The establishment of the position relationship between the skull and the augmented reality display is a core link for limiting the use of the augmented reality technology in skull operation, the complexity and the final precision of the establishment process directly influence the feasibility of the use of the augmented reality display, and no unified technical specification is formed at present. Research using markers fixed on the skull shows that the accuracy and safety of the skull operation can be effectively improved through virtual image navigation of augmented reality, and the requirements of clinical operation are met. However, the conventional connection mode of the marker and the skull generally requires additional intraoperative positioning operation or the assistance of optical positioning equipment to establish the spatial position relationship between the three-dimensional image and the marker, thus greatly increasing the operation time and the cost.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one purpose of the utility model is to provide a craniofacial guide plate capable of assisting the navigation of a head-mounted augmented reality display, which can quickly and efficiently establish the spatial position relationship between the three-dimensional image of the head-mounted augmented reality display and the cranium of a patient, is convenient, safe and reliable to use, and is beneficial to reducing the operation time and cost of the cranium operation.
A craniofacial guide plate for assisting navigation of a head-mounted augmented reality display according to an embodiment of the utility model includes:
the base is used for being fixed with the skull, and is a shell which is completely attached to the skull;
a mounting portion fixed with the base;
and the visible light identification marker is fixed on the mounting part.
According to the craniofacial guide plate capable of assisting the head-mounted augmented reality display in navigation, the base capable of being completely attached to the cranium is arranged, and the craniofacial guide plate is fixed at a designed fixed position through the base, so that the positions of the craniofacial guide plate and the craniofacial guide plate of a patient can be established; by setting the visible light identification marker, the head-mounted augmented reality display can realize the establishment of the position relationship between the craniofacial guide plate and the three-dimensional image of the head-mounted augmented reality display by identifying the visible light identification marker, so that the craniofacial guide plate can realize the establishment of the position relationship between the craniofacial guide plate and the three-dimensional image of the head-mounted augmented reality display, can perform in-situ display of the three-dimensional image and the operation planning path, can meet the dual requirements of rapidness and accuracy of a craniofacial operation, and has the characteristics of high efficiency, stability and easiness in use. In conclusion, the craniofacial guide plate is matched with the anatomy structure of a patient in three dimensions, and is convenient, safe and reliable to use; the utility model does not need expensive medical equipment such as operation, nerve navigation and the like, can avoid doctor-patient suffering from ionizing radiation, greatly saves operation time and cost, and can be repeatedly used; the utility model can be applied to the navigation of the skull operation, is favorable for the popularization and the use of the navigation technology of the skull operation in primary hospitals, and has important potential social value.
In some embodiments, the thickness of the base is 2.5 to 3mm.
In some embodiments, the mounting portion is a plate body, one side surface of the plate body is fixed on the base, and the other side surface of the plate body is fixed with the visible light identification marker.
In some embodiments, a groove is formed in the other side face of the plate body, and the visible light identification marker is arranged in the groove.
In some embodiments, clamping grooves are formed in the peripheral side walls of the grooves, and the visible light identification markers are adaptively fixed with the clamping grooves.
In some embodiments, the base and the mounting portion are 3D printed integral pieces.
In some embodiments, the base and the mounting portion are a 3D printed integral piece of high-toughness photosensitive resin.
In some embodiments, the visible light-identifying marker is a marker having a mixed pattern of text and random polygons.
In some embodiments, the visible light identifying marker includes a glass substrate and an aluminum oxide surface coating covering a surface of the glass substrate.
In some embodiments, the thickness of the visible light identification marker is 2.5-3.5 mm, and the depth of the clamping groove is matched with the thickness of the visible light identification marker.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a craniofacial guide configured to assist in navigating a head mounted augmented reality display according to an embodiment of the present utility model.
FIG. 2 is a side view of a craniofacial guide that may assist in navigating a head mounted augmented reality display according to an embodiment of the utility model.
Figure 3 illustrates a front view of a three-dimensional model of the skull and a model of the fundus.
Figure 4 illustrates a side view of a three-dimensional model of the skull and a model of the base.
Fig. 5 is a schematic structural view of a base according to an embodiment of the utility model.
Fig. 6 is a side view of a base of an embodiment of the present utility model.
Fig. 7 is a schematic structural view of a mounting portion according to an embodiment of the present utility model.
Fig. 8 is a schematic diagram of an explosion structure of a mounting portion and a visible light identification tag according to an embodiment of the present utility model.
Fig. 9 is a front view of a simulation path of a brain model and ventricular puncture obtained using CT.
Fig. 10 is a side view of a simulation path of a brain model and ventricular puncture obtained using CT.
FIG. 11 illustrates an angular schematic view of a head-mounted augmented reality display displaying a three-dimensional image fully coincident with a craniofacial guide and a target surgical path designed and planned in advance, under the positioning of the craniofacial guide in an embodiment of the present utility model.
FIG. 12 is a schematic illustration of a head-mounted augmented reality display displaying a three-dimensional image fully coincident with a craniofacial guide and another angle of a target surgical path designed and planned in advance, under the positioning of the craniofacial guide in an embodiment of the present utility model.
FIG. 13 is a schematic illustration of a head-mounted augmented reality display displaying a three-dimensional image fully coincident with a craniofacial guide and yet another angle of a target surgical path designed and planned in advance with the positioning of the craniofacial guide in accordance with an embodiment of the present utility model.
Reference numerals:
craniofacial guide plate 1000 capable of assisting head-mounted augmented reality display navigation
Visible light identification marker 3 with groove 201 and clamping groove 202 of mounting part 2 of base 1
Skull A operation route B
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
A craniofacial guide 1000 that may assist in the navigation of a head-mounted augmented reality display according to an embodiment of the utility model is described below in connection with fig. 1-13.
As shown in fig. 1 to 2, a craniofacial guide plate 1000 capable of assisting in navigation of a head-mounted augmented reality display according to an embodiment of the present utility model includes a base 1, a mounting portion 2 and a visible light identification marker 3, the base 1 is used for fixing with a skull a, and the base 1 is a housing fully fitting with the skull a; the mounting part 2 is fixed with the base 1; the visible light identification marker 3 is fixed on the mounting portion 2.
Specifically, the base 1 is used for fixing with the skull, for example, a sterile transparent adhesive film can be adopted for fixing with the skull, and the fixing mode is rapid and accurate. The base 1 is a shell which is completely attached to the skull A, and the fixed position of the base 1 and the skull A is determined in advance through modeling design, so that the base 1 can be designed into a form of being completely attached to the skull A, and the more stable and high-precision positioning and fixing between the skull A and the base 1 can be realized. The base 1 which is completely attached to the skull A is obtained by adopting a mode of advanced modeling, and then the manufactured and molded base 1 is fixed on a fixed position designed on the skull A, so that the fixed position of the base 1 is uniquely determined relative to the skull A, and the position of the craniofacial guide plate 1000 is also uniquely determined relative to the skull A, thereby accurately and quickly determining the spatial position relationship between the visible light identification mark 3 and the skull A without using additional intraoperative imaging and optical positioning equipment.
The mounting part 2 is fixed with the base 1; the visible light identification marker 3 is fixed on the mounting portion 2. That is, the mounting portion 2 is for fixing the visible light identification marker 3 such that the position of the visible light identification marker 3 is uniquely determined with respect to the base 1. The visible light identification marker 3 is used for identifying a camera system of the head-mounted augmented reality display, and the augmented reality technology is different from the traditional two-dimensional image, model, cadaver specimen and other methods in terms of skull operation simulation, so that the skull operation scheme simulation, operation path simulation and the like can be realized by a doctor through the augmented reality technology, and the diagnosis and treatment quality can be improved. When the craniofacial guide plate 1000 is used, the camera system of the head-mounted augmented reality display can establish a real-time spatial position relation between the three-dimensional image of the head-mounted augmented reality display and the visible light identification marker 3 by identifying the visible light identification marker 3, and when the head-mounted augmented reality display is static or moving, the relative position between the three-dimensional image of the head-mounted augmented reality display and the visible light identification marker 3 is always unchanged, namely, the positions of the three-dimensional image of the head-mounted augmented reality display and the cranium of a patient are also unchanged, so that the craniofacial guide plate 1000 can be used for performing the simulation of the craniofacial operation and the navigation task in the operation assisted by the augmented reality image, and the accuracy and the safety of the craniofacial operation are improved.
The following describes a method for preparing craniofacial guide 1000 that may assist in navigation of a head-mounted augmented reality display according to an embodiment of the present utility model. Firstly, based on CT data of a head A before operation, extracting surface data of the head A by using open source computer medical image processing software to form a three-dimensional model of the head A, such as the three-dimensional model of the head A shown in fig. 3 and 4, and planning a target operation path B, such as a simulation path of ventricular puncture and a model of the head A obtained by using CT, as shown in fig. 9 and 10; selecting the installation range of the craniofacial guide plate 1000 according to the operation requirement, generating a shell model with a certain thickness which is three-dimensionally complementary with the craniofacial anatomical surface by software, and dividing the shell model to obtain a model of the base 1 of the craniofacial guide plate 1000; then, the model of the mounting part 2 designed in advance is added into the model of the base 1, the mounting part 2 is adjusted in position according to the position relation between the operation area of the patient and the craniofacial guide plate 1000, the planned target operation path B and other information, and finally, the model of the base 1, the model of the mounting part 2 and the model of the visible light identification marker 3 are fused, so that the design of the model of the craniofacial guide plate 1000 is completed. Then, the base 1 and the mounting portion 2 of the entity are fabricated according to the fused model of the base 1 and the fused model of the mounting portion 2, for example, the base 1 and the mounting portion 2 of the entity can be obtained by a 3D printing technology according to the fused model of the base 1 and the fused model of the mounting portion 2; finally, the processed and proper visible light identification marker 3 is fixed on the position of the entity installation part 2 for fixing the visible light identification marker 3, so that the craniofacial guide plate 1000 capable of assisting the head-mounted augmented reality display in navigation can be obtained.
After the craniofacial guide plate 1000 is arranged on the cranium of a patient, the visible light identification marker 3 is identified and positioned by utilizing the camera system of the head-mounted augmented reality display, so that the real-time space coordinate relation between the three-dimensional image of the head-mounted augmented reality display and the cranium A can be assisted to be established, and finally, the in-situ display of the three-dimensional image of the head-mounted augmented reality display is realized, as shown in fig. 11 to 13, the three-dimensional image of the head-mounted augmented reality display and the craniofacial guide plate 1000 are completely overlapped, the operation simulation path is displayed clearly, and the head operation simulation and the operation navigation task assisted by the augmented reality image can be performed. That is, the utility model relies on preoperative CT data, can rapidly and accurately establish the spatial position relationship between the skull A and the augmented reality display without the help of intraoperative positioning operation and optical positioning equipment, and can provide convenient and fast help for high-precision skull navigation operation.
In summary, according to the craniofacial guide plate 1000 capable of assisting the navigation of the head-mounted augmented reality display in the embodiment of the utility model, by arranging the base 1 which can be completely attached to the craniofacial guide plate 1000, the craniofacial guide plate 1000 is fixed at a designed fixed position through the base 1, thereby realizing the establishment of the positions of the craniofacial guide plate 1000 and the craniofacial guide plate 1000 of a patient; by arranging the visible light identification marker 3, the head-mounted augmented reality display can realize the establishment of the position relationship between the craniofacial guide plate 1000 and the three-dimensional image of the head-mounted augmented reality display by identifying the visible light identification marker 3, so that the craniofacial guide plate 1000 can realize the establishment of the position relationship between the craniofacial A and the three-dimensional image of the head-mounted augmented reality display, can perform in-situ display of the three-dimensional image and the operation planning path, can meet the dual requirements of rapidness and accuracy of the craniofacial operation, and has the characteristics of high efficiency, stability and easiness in use. In conclusion, the craniofacial guide plate 1000 of the utility model is three-dimensionally matched with the anatomy structure of a patient, and is convenient, safe and reliable to use; the utility model does not need expensive medical equipment such as CT and nerve navigation in operation, can avoid doctor-patient suffering from ionizing radiation, greatly saves operation time and cost, and can be repeatedly used; the utility model can be applied to the navigation of the skull operation, is favorable for the popularization and the use of the navigation technology of the skull operation in primary hospitals, and has important potential social value.
In some embodiments, the thickness of the base 1 is 2.5-3 mm. By adopting the thickness range, on one hand, the structural strength of the base 1 is ensured, deformation is not easy to occur, and therefore, the installation and positioning precision of the craniofacial guide plate 1000 is ensured; on the other hand, the thickness is convenient to produce and manufacture by 3D printing, and the manufacturing mode is simple and quick.
In some embodiments, as shown in fig. 1 and 2, the mounting portion 2 is a plate body, one side surface of the plate body is fixed on the base 1, and the other side surface of the plate body is fixed with the visible light identification marker 3. It should be noted that, the installation portion 2 may be a cylindrical plate body, a square plate body or a plate body with other shapes, as shown in fig. 1, fig. 2, fig. 7 and fig. 8, the installation portion 2 may be a square plate body, and has a simple structure, is convenient for processing, and is convenient for determining the setting positions of the visible light identification markers.
In some embodiments, as shown in fig. 1 and 7, a groove 201 is provided on the other side of the plate body, and the visible light identification mark 3 is provided in the groove 201. The groove 201 is arranged to fix the visible light identification marker 3, so that the visible light identification marker 3 is positioned on the plate body quickly, and is not easy to deviate, the positioning matching degree between the three-dimensional image of the head-mounted augmented reality display and the skull A is improved, and the positioning precision of the head surgery simulation and the intra-operative navigation task assisted by the augmented reality image is improved.
In some embodiments, as shown in fig. 7, a clamping groove 202 is provided on the peripheral side wall of the groove 201, and the visible light identification marker 3 is adaptively fixed with the clamping groove 202. By arranging the clamping groove 202, the visible light identification marker 3 can be conveniently and quickly fixed on one hand; on the other hand, the position of the fixed visible light identification marker 3 in the space can be uniquely determined, the offset is not easy to occur, and the positioning accuracy of the skull operation simulation and the intraoperative navigation task assisted by the augmented reality image is improved.
In some embodiments, the base 1 and the mounting portion 2 are integrally formed parts through 3D printing, that is, the base 1 and the mounting portion 2 are integrally formed by adopting a 3D printing technology, the processing is simple, convenient and quick, no additional assembly is needed, the relative position between the base 1 and the mounting portion 2 is determined, the problem of position deviation is not easy to occur, the precision is high, and the overall use effect is good.
In some embodiments, the base 1 and the mounting portion 2 are 3D printed integral pieces of high-toughness photosensitive resin. In this way, the printed base 1 and the mounting part 2 will not deform and break seriously when encountering normal external force during use, and can recover the original state after the external force is removed, so that the craniofacial guide plate 1000 has the characteristic of recovering to normal after the external force is applied, and can be reused for multiple times.
In some embodiments, as shown in fig. 8, the visible light identification marker 3 is a marker with a mixed pattern of text and random polygons, so that the visible light identification marker 3 has uniqueness, and the visible light identification marker 3 is easy to distinguish from surrounding environment features, so that the head-mounted augmented reality display can capture the visible light identification marker 3.
In some embodiments, the visible light identification marker 3 comprises a glass substrate and an alumina surface coating covering a surface of the glass substrate. It should be noted that, the alumina surface coating is located the upper strata, and the glass substrate is located the lower floor, and the head-mounted augmented reality display discerns alumina surface coating, adopts alumina surface coating surface as the discernment surface of head-mounted augmented reality display because, alumina surface material's diffuse reflection characteristic has guaranteed stability and recognition accuracy of visible light identification marker 3 under operating room light environment. The manufacturing process of the visible light identification mark 3 can adopt a commercial alumina calibration plate manufacturing technology, and the visible light identification mark 3 needs to be removed from the outer part of the pattern boundary by a glass corner grinding machine before being connected with the mounting part 2.
In some embodiments, the thickness of the visible light identification mark 3 is 2.5-3.5 mm, for example, may be 2.5mm, 2.7mm, 3mm, 3.2mm, 3.5mm, etc., and the depth of the clamping groove 202 is adapted to the thickness of the visible light identification mark 3, so that the visible light identification mark 3 can be stably and reliably fixed in the clamping groove 202.
In a specific example, the visible light identification marker 3 is a rectangular parallelepiped having a length and a width of 40mm and a thickness of 3mm.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A craniofacial guide for assisting navigation of a head-mounted augmented reality display, comprising:
the base is used for being fixed with the skull, and is a shell which is completely attached to the skull;
a mounting portion fixed with the base;
and the visible light identification marker is fixed on the mounting part.
2. The craniofacial guide for assisting navigation of a head-mounted augmented reality display according to claim 1, wherein the thickness of the base is 2.5-3 mm.
3. The craniofacial guide plate capable of assisting navigation of a head-mounted augmented reality display according to claim 1, wherein the mounting portion is a plate body, one side face of the plate body is fixed on the base, and the other side face of the plate body is fixed with the visible light identification marker.
4. The craniofacial guide plate capable of assisting the navigation of a head-mounted augmented reality display according to claim 3, wherein a groove is arranged on the other side surface of the plate body, and the visible light identification marker is arranged in the groove.
5. The craniofacial guide plate capable of assisting the navigation of the head-mounted augmented reality display according to claim 4, wherein clamping grooves are formed in the peripheral side walls of the grooves, and the visible light identification markers are adaptively fixed with the clamping grooves.
6. The craniofacial guide for assisting navigation of a head-mounted augmented reality display of any one of claims 1-5, wherein the base and the mounting portion are a 3D printed integral piece.
7. The craniofacial guide for assisting navigation of a head-mounted augmented reality display of claim 6, wherein the base and the mounting portion are a 3D printed integral piece of high-toughness photosensitive resin.
8. The craniofacial guide for assisting navigation of a head-mounted augmented reality display according to any one of claims 1-5, wherein the visible light identification marker is a marker having a mixed pattern of text and random polygons.
9. The craniofacial guide for assisting navigation of a head-mounted augmented reality display of any one of claims 1-5, wherein the visible light identification marker comprises a glass substrate and an alumina surface coating covering a surface of the glass substrate.
10. The craniofacial guide plate capable of assisting the navigation of a head-mounted augmented reality display according to claim 5, wherein the thickness of the visible light identification marker is 2.5-3.5 mm, and the depth of the clamping groove is adapted to the thickness of the visible light identification marker.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221875792.3U CN219354184U (en) | 2022-07-19 | 2022-07-19 | Craniofacial guide plate capable of assisting head-mounted augmented reality display navigation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221875792.3U CN219354184U (en) | 2022-07-19 | 2022-07-19 | Craniofacial guide plate capable of assisting head-mounted augmented reality display navigation |
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| CN219354184U true CN219354184U (en) | 2023-07-18 |
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| CN202221875792.3U Active CN219354184U (en) | 2022-07-19 | 2022-07-19 | Craniofacial guide plate capable of assisting head-mounted augmented reality display navigation |
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