CT (Computed Tomography) scanning positioning box for bone AR (Augmented Reality) registration

Abstract

The utility model discloses a CT (Computed Tomography) scanning positioning box for bone AR (Augmented Reality) registration. The positioning box comprises an upper cover body and a lower cover body, the upper cover body comprises an injection part made of a rubber material, a direction identification part and an exhaust part made of a rubber material; the injection part, the direction identification part and the exhaust part are internally communicated to form a first accommodating cavity; the first accommodating cavity forms a first direction identification cavity for accommodating a contrast agent in an area where the direction identification part is located; the lower cover body is arranged below the upper cover body, the bottom of the lower cover body is provided with a dyeing label seal protruding part corresponding to the first direction identification cavity, and the dyeing label seal protruding part is used for providing dyeing agent dip dyeing for the skin of a detector. According to the utility model, the positioning box is designed to provide a positioning reference for assisting the in-vitro visual model of the skeleton operation, and the positioning box comprises the contrast agent accommodating cavity which can provide the positioning reference for augmented reality.

Description

Technical Field

[0001] The utility model relates to the field of medical accessories, in particular to a CT scanning positioning box used for bone AR registration. Background Art

[0002] In recent years, computer-aided medical imaging technology has been widely used in the medical industry. Among them, CT scanning technology can obtain three-dimensional data inside the human body, providing doctors with more accurate diagnosis and treatment plans. Medical image registration refers to seeking a spatial transformation for a medical image so that it can be spatially consistent with the corresponding points on another medical image. This consistency means that the same anatomical point on the human body has the same spatial position in two matching images. Augmented reality technology is a technology that cleverly integrates virtual information with the real world. It widely uses multimedia, three-dimensional modeling, real-time tracking and registration, intelligent interaction, sensing and other technical means to simulate computer-generated text, images, three-dimensional models, music, videos and other virtual information, and apply them to the real world. The two types of information complement each other, thereby achieving "enhancement" of the real world.

[0003] In the prior art, augmented reality for bone surgery generally involves directly scanning the bones without providing auxiliary positioning equipment, which can easily lead to positioning distortion. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a CT scanning positioning box for bone AR alignment, which is intended to provide a positioning reference for an in vitro visualization model for auxiliary bone surgery. The positioning box includes a contrast agent holding cavity that can provide a positioning reference for augmented reality.

[0005] To achieve the above-mentioned purpose, the utility model provides a CT scanning positioning box for bone AR alignment, the positioning box comprising an upper cover body and a lower cover body; the upper cover body comprises an injection part, a direction marking part and an exhaust part made of rubber material; the injection part, the direction marking part and the exhaust part are connected to form a first accommodating cavity; the first accommodating cavity is formed as a first direction marking cavity for accommodating a contrast agent in the area where the direction marking part is located; the lower cover body is arranged under the upper cover body, and a dye mark stamp protrusion corresponding to the first direction marking cavity is arranged at the bottom of the lower cover body, and the dye mark stamp protrusion is used to provide dye impregnation for the skin of the detection person.

[0006] Optionally, the distance between the lower top of the raised portion of the dye mark stamp and the upper top of the first direction marking cavity is 5 mm-30 mm.

[0007] Optionally, the upper cover body and the lower cover body are both integrally formed structures.

[0008] Optionally, the positioning box is a square structure, and the upper cover body is fixedly connected to the lower cover body.

[0009] Optionally, the direction identification portion is arranged on the top of the positioning box, and the direction identification portion is a convex shape.

[0010] Optionally, the bottom of the lower cover body is bonded to two adhesive layers with sticky surfaces, and the adhesive layers are used to adhere to the skin surface.

[0011] The beneficial effects of the utility model are as follows: 1. The injection part, direction identification part and exhaust part of the positioning box of the utility model are connected to form a first accommodating chamber. The first accommodating chamber is formed as a first direction identification chamber for accommodating contrast agent in the area where the direction identification part is located, so that the injected contrast agent is continuously formed into a convex direction identification shape, so that the contrast agent is sealed in the first accommodating chamber to form a complete casting. After CT scanning of the contrast agent in the accommodating chamber, the direction identification shape structure formed by the contrast agent can indicate the relative spatial position information of the CT image reconstruction model, so that the relative spatial position information is clear and easy to identify; the bottom surface of the lower cover body is provided with a dye mark stamp convex part corresponding to the direction mark convex part, and the dye mark stamp convex part is infiltrated with skin dye to transfer the spatial position information mark to the skin surface, so as to provide a marker pasting calibration reference for augmented reality registration, so as to provide a hardware foundation for establishing a coordinate system of the real space for augmented reality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a CT scanning positioning box for bone AR registration of the utility model;

[0013] Figure 2 This is another perspective structural schematic diagram of a CT scanning positioning box for bone AR registration of the utility model;

[0014] Figure 3 It is a schematic diagram of the upper cover structure of a CT scanning positioning box for bone AR registration of the utility model;

[0015] Figure 4 It is a schematic diagram of the lower cover structure of a CT scanning positioning box for bone AR registration of the utility model;

[0016] Figure 5 It is a schematic diagram of the work flow of a CT scanning positioning box for bone AR registration according to the utility model. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0019] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0020] The applicant's research found that augmented reality for bone surgery generally involves directly scanning the bones without providing auxiliary positioning equipment, which can easily lead to positioning distortion.

[0021] Therefore, the embodiment of the utility model provides a CT scanning positioning box for bone AR registration, which can be used as Figure 1-Figure 5 As shown, the positioning box includes an upper cover body 1 and a lower cover body 2; the upper cover body 1 includes an injection part 11 made of rubber material, a direction marking part 12 and an exhaust part 13 made of rubber material; the injection part 11, the direction marking part 12 and the exhaust part 13 are connected to form a first accommodating cavity; the first accommodating cavity is formed as a first direction marking cavity for accommodating a contrast agent in the area where the direction marking part 12 is located; the lower cover body 2 is arranged under the upper cover body 1, and a dye mark stamp protrusion 3 corresponding to the first direction marking cavity is arranged at the bottom of the lower cover body 2, and the dye mark stamp protrusion 3 is used to provide dye for the skin of the inspector.

[0022] The injection part 11 and the exhaust part 13 are self-sealing rubber structures, and a sealing structure is formed after the needle is inserted to infuse the contrast agent and then pulled out.

[0023] Optionally, the distance between the lower top of the dye mark stamp protrusion 3 and the upper top of the first direction marking cavity is 5 mm-30 mm.

[0024] Optionally, the upper cover body 1 and the lower cover body 2 are both integrally formed structures.

[0025] Optionally, the positioning box is a square structure, and the upper cover body 1 and the lower cover body 2 are fixedly connected.

[0026] Optionally, the direction marking portion 12 is disposed on the top of the positioning box, and the direction marking portion 12 is in a convex shape.

[0027] Optionally, the bottom of the lower cover body 2 is bonded to a double-sided adhesive layer, and the adhesive layer is used to adhere to the skin surface.

[0028] The working principle of the utility model is as follows: a needle is inserted into the injection part 11 to infuse contrast agent into the first direction marking cavity, and another needle is inserted into the exhaust part 13 to guide air to prevent the formation of bubbles in the cavity, so that the contrast agent forms a continuous three-dimensional structure in the shape of a convex direction marking in the first direction marking cavity. After the infusion is completed, the needle is removed to form a self-sealing structure. After the dyeing mark stamp convex part 3 of the lower cover body 2 is dipped in the skin dye, the positioning box is pasted and placed on the skin surface corresponding to the human skeleton to be CT scanned, and a CT scan is performed. A virtual positioning box shape block, skeleton and skin and other 3D models are reconstructed from the CT image, and positioning is performed according to the identification pattern on the positioning box and the dyeing identification pattern on the real patient's skin.

[0029] The injection part 11, the direction marking part 12, and the exhaust part 13 of the positioning box of the embodiment of the utility model are connected to form a first accommodating chamber. The first accommodating chamber is formed as a first direction marking chamber for accommodating contrast agent in the area where the direction marking part 12 is located, so that the injected contrast agent is continuously formed into a convex direction marking shape, so that the contrast agent is sealed in the first accommodating chamber to form a complete casting. After CT scanning of the contrast agent in the accommodating chamber, the direction marking shape structure formed by the contrast agent can indicate the relative spatial position information of the CT image reconstruction model, so that the relative spatial position information is clear and easy to identify; the bottom surface of the lower cover body 2 is provided with a dye mark stamp convex part 3 corresponding to the direction mark convex part, and the dye mark stamp convex part 3 is infiltrated with skin dye to transfer the spatial position information mark to the skin surface, providing a marker pasting calibration reference for augmented reality registration, so as to provide a hardware foundation for establishing a coordinate system of the real space for augmented reality. There is a fixed distance between the lower top of the raised portion 3 of the dye mark stamp in the embodiment of the utility model and the upper top of the first direction marking cavity. The fixed distance provides the offset distance information required for alignment of the virtual 3D reconstructed model to the real scene, so as to facilitate the alignment of the coordinates with the real object coordinates to achieve spatial structure alignment.

[0030] In addition, if Figure 5 As shown, the steps of bone AR registration include:

[0031] Step S1, after the positioning box is perfused with contrast agent, a CT scan is performed on the user's skin surface to obtain a cross-sectional CT image of the positioning box, skin and bones;

[0032] Step S2, reconstructing and positioning a 3D model of a virtual positioning box shape block, bones, skin, etc. through the CT image and a fixed offset distance on the positioning box;

[0033] Step S3: Link and integrate the 3D model with the AR navigation scene.

[0034] It is worth mentioning that bone AR registration does not belong to the protection content of the present utility model and is only briefly explained here.

[0035] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A CT scanning positioning box for bone AR registration, characterized in that: The positioning box includes an upper cover body and a lower cover body; the upper cover body includes an injection part, a direction marking part and an exhaust part made of rubber material; the injection part, the direction marking part and the exhaust part are connected to form a first accommodating cavity; the first accommodating cavity is formed as a first direction marking cavity for accommodating a contrast agent in the area where the direction marking part is located; the lower cover body is arranged under the upper cover body, and a dye mark stamp protrusion corresponding to the first direction marking cavity is arranged at the bottom of the lower cover body, and the dye mark stamp protrusion is used to provide dye for the skin of the inspector.

2. The CT scanning positioning box for bone AR registration according to claim 1, characterized in that: The distance between the lower top of the raised portion of the dye mark stamp and the upper top of the first direction marking cavity is 5 mm-30 mm.

3. The CT scanning positioning box for bone AR registration according to claim 1, characterized in that: The upper cover body and the lower cover body are both integrally formed structures.

4. The CT scanning positioning box for bone AR registration according to claim 1, characterized in that: The positioning box is a square structure, and the upper cover body is fixedly connected to the lower cover body.

5. The CT scanning positioning box for bone AR registration according to claim 1, characterized in that: The direction identification portion is arranged on the top of the positioning box, and the direction identification portion is in a convex shape.

6. The CT scanning positioning box for bone AR registration according to claim 1, characterized in that: The bottom of the lower cover body is bonded and connected to the adhesive layer with two sticky surfaces, and the adhesive layer is used for bonding to the skin surface.

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