12 results about "Ocular prosthesis" patented technology

The application discloses a 3D printing ocular prosthesis platform, which is prepared through the following steps: S1, designing the shape of the ocular prosthesis platform and dividing the shape into regions; S2, selecting a porous structure for the ocular prosthesis platform in each region and determining the voxel size according to the connecting point parameters of the selected porous structure; S3, voxelizing and fitting each region to form a voxelized interface; S4, filling the porous structure selected in step S2 into each corresponding region to complete the modeling of the porous structure in each region; S5, connecting the connecting points on adjacent voxelized interfaces to each other and converting the connecting lines into solid rod models to complete the modeling of the interfaces; S6, merging the models obtained in steps S4 and S5 to obtain a final model of the ocular prosthesis platform; S7, 3D printing to obtain a bioceramic blank; and S8, high-temperature sintering of the blank to obtain a 3D printed ocular prosthesis platform after porcelain forming. The application can obtain a new 3D printed ocular prosthesis platform, which provides technical support for ocular prosthesis repair.

A method and a system of determining shape and appearance information of an ocular prosthesis for a patient, a computer program product and a conformer The invention relates to a method and a system of determining shape and appearance information of an ocular prosthesis (7) for a patient, comprising the steps of: - generating shape information for the ocular prosthesis (7), - determining the shape of the ocular prosthesis (7) depending on said shape information, - generating appearance information for the ocular prosthesis by capturing an image of a patient's eye, - fusing the shape and the appearance information, wherein the determination of the shape of the ocular prosthesis comprises - determining the shape based on a shape model being determined based on the shapes of existing prostheses or - determining the shape by generating shape information of an existing patient- specific prosthesis and transforming it into a uniform shape representation, and / or the generation of appearance information comprises performing at least one of - an inhomogeneous illumination correction and - a color characterization being performed using the same or similar viewing conditions as a color characterization of a device used for the manufacturing of the ocular prosthesis based on the appearance information. as well as a computer program product and a conformer (19). -

The invention provides a normal eyeball motion trail capturing method and system, a terminal and a medium, which are used for controlling motion of a preset image in an artificial eye piece display device, and comprise the following steps: acquiring normal eyeball image data in real time based on an image acquisition device; preprocessing the normal eyeball image data; extracting features of the preprocessed image data to obtain eyeball feature points; and performing continuous frame analysis on the preprocessed image data by adopting a feature point matching method so as to obtain movement track information of normal eyeball feature points. According to the invention, through carrying out feature point extraction on normal eyeball image data, carrying out feature point matching analysis, only obtaining motion track information of normal eyeball feature points, and separating motion information from eyeball images, colors, brightness and other data, collected and transmitted data is simplified, the collected and transmitted data volume is reduced, signal delay is reduced, and the accuracy of the data is improved. Therefore, the synchronous movement of the preset image in the artificial eye piece display device is realized.

The invention provides a multifunctional artificial eye seat with polar radiation aperture distribution and a preparation method thereof, and belongs to the technical field of biomedical materials. The artificial eye seat is a porous spherical or ellipsoidal stent taking trace copper doped zinc melilite biological ceramic as a main component. The internal micropores are mutually communicated curved surface pore units, the pore diameters of the micropores are radially expanded from one end of the spherical surface to the opposite side in a macropore-mesopore-micropore gradient layout, a polar radiation pore diameter distribution three-dimensional bracket model is printed by adopting photocuring ceramic, and then the polar radiation pore diameter distribution three-dimensional bracket model is cleaned, dried and sintered to form the polar radiation pore diameter distribution three-dimensional bracket; the artificial eye seat gives consideration to the anatomical physiological structure of the orbit, the surface of the macropore area is attached to the deep soft tissue of the orbit, and the micropore area faces the ocular surface, so that vascularized soft tissue ingrowth is efficiently promoted, infection is durably resisted, common risks such as displacement and exposure of the artificial eye seat are effectively overcome, and the artificial eye seat has good application value in orbit reconstruction and reshaping.

Based on 3D printing technology and corneal topography assisted personalized ocular prosthesis manufacturing method, through the high polymer impression material to make the patient's eye side conjunctival sac impression, and obtain the three-dimensional data of the conjunctival sac impression of the affected eye, and establish a three-dimensional model, remove the front surface of the three-dimensional model with the pupil center as the center, and the corneal diameter data of the healthy eye as the diameter of the circular area, and integrate the pupil diameter and corneal anterior surface curvature data of the healthy eye in this area, and finally obtain the three-dimensional model of the ocular prosthesis, and the ocular prosthesis is made through 3D printing technology, because the data of the pupil diameter and corneal anterior surface curvature of the healthy eye are integrated on the front surface of the three-dimensional model of the affected eye, the ocular prosthesis is more realistic and more suitable for the affected eye.

An ocular prosthesis includes a display device visible at an anterior portion of the ocular prosthesis. The display device is configured to present a changeable image that represents a natural appearance and movement for a visible portion of an eyeball of a subject. A system includes, besides the ocular prosthesis, an implant marker configured to move with an orbital implant disposed in an eye socket of a subject. A method includes determining a change in orientation of an orbital implant in a subject and determining an update to a natural appearance for a visible portion of an eyeball for the subject based on the change in orientation of the orbital implant. The method also includes rendering an update to an image of the natural appearance for a display device disposed in an ocular prosthesis configured to be inserted in the subject anterior to the orbital implant.

The invention provides a topologically optimized alloy ocular prosthesis structure, and relates to the technical field of ocular prosthesis structures, the topologically optimized alloy ocular prosthesis structure comprises an ocular prosthesis table body and a positioning hole, and the ocular prosthesis table body is made of a titanium alloy material through a 3D printing technology; the shape of the alloy prosthetic eye is matched with the shape of a human body muscular cone cavity, and the alloy prosthetic eye comprises a base which is used for being fixedly implanted into an eye socket; micropores are formed in the surface of the ocular prosthesis table body and used for promoting tissue fibrosis and new blood vessel generation. The surface of the ocular prosthesis table body is subjected to anodic oxidation and electrochemical polishing, and the surface of the ocular prosthesis table body is coated with a bioactive coating; the drug sustained-release through holes are formed in the artificial eye table body and used for slowly releasing anti-inflammatory or antibacterial drugs, a Ti-6Al-4V or similar titanium alloy material is adopted, anodic oxidation and electrochemical polishing treatment are combined, a uniform and stable titanium oxide layer is formed, the biocompatibility of the artificial eye table is effectively improved, and tissue rejection reaction is reduced.

An ocular prosthesis for replacing a part of an eye of a user, comprising a prosthesis body, characterized in that it comprises a hollow interior space delimited by an anterior element configured so as to simulate the sclera of the eye of the user, and a posterior element, configured so as to copy a portion of an internal ocular edge, and wherein the prosthesis body includes a coating that covers the outer contour of both tne anterior and posterior elements so as to hold them in place, allowing encapsulation of the hollow interior space and simulation of the cornea of the eye of the user.

A method and a system for determining shape and appearance information of an ocular prosthesis for a patient, a computer program product and a conformer are provided. The method includes generating shape information for the ocular prosthesis, determining the shape of the ocular prosthesis depending on said shape information, generating appearance information for the ocular prosthesis by capturing an image of a patient's eye, and fusing the shape and the appearance information. Determining the shape of the ocular prosthesis includes determining the shape based on a shape model or determining the shape by generating shape information of an existing patient-specific prosthesis and transforming it into a uniform shape representation, and / or generating appearance information includes performing at least one of an inhomogeneous illumination correction and a color characterization being performed with same or similar viewing conditions as a color characterization of a device used for the manufacturing of the ocular prosthesis.

The invention provides a preset image type ocular prosthesis sheet display device, which is connected with a camera device arranged on a normal eyeball side and comprises an ocular prosthesis sheet base material, a power supply and a display screen which is carried on the ocular prosthesis sheet base material and is used for displaying a preset eyeball image, the device does not depend on an electronic ocular prosthesis table. According to the artificial eye piece display device, the position of the preset eyeball image on the display screen is adjusted by receiving the motion trail signal of the normal eyeball generated and sent by the camera device, and synchronous motion with the normal eyeball is achieved visually. By simplifying the movement track signal and controlling the movement of the preset eyeball image, the real-time synchronous movement with the normal eyeball is realized, meanwhile, the hardware requirement of the device is reduced, the miniaturization and the light weight of the ocular prosthesis display device are facilitated, and the wearing stability of the ocular prosthesis display device is improved.

The application provides an artificial eye manufacturing method, an artificial eye and an artificial eye. The manufacturing method comprises the following steps: obtaining eye image data of a patient, wherein the eye image data comprises eye image data of an affected eye and eye image data of a healthy eye; constructing an initial three-dimensional data model of an artificial eye according to the eye image data of the affected eye, wherein the initial three-dimensional data model is a simulation model with a three-dimensional morphological feature; matching the eye image data of the healthy eye with data samples in a preset artificial eye database, and determining a mapping image data according to a similarity; fusing the mapping image data with the initial three-dimensional data model to obtain a target three-dimensional data model of the artificial eye; and manufacturing the artificial eye based on the target three-dimensional data model. The artificial eye manufacturing method, the artificial eye and the artificial eye provided by the application can imitate the shape of a real eyeball, improve the fidelity of the artificial eye, and effectively improve the manufacturing efficiency.

The invention relates to the technical field of novel ocular prosthetic tables, in particular to a novel ocular prosthetic table and a production device thereof.The novel ocular prosthetic table comprises an ocular prosthetic table body, the ocular prosthetic table body is divided into an original shape and an oval shape, sewing channels are symmetrically formed in the top of the ocular prosthetic table body, and porous structures are evenly formed in the surface and the interior of the ocular prosthetic table body; and the porous structure is not limited to a circle. According to the scheme, applicable design and production work can be carried out on the artificial eye table body according to the actual condition of a patient, needle pricking injury in the self-made threading tunnel process can be avoided through the suture channel, operation time can be saved, the artificial eye table is more friendly to medical staff and the patient, and due to the fact that the inner surface of the suture channel is smooth, suture abrasion and fracture can be avoided, and the working efficiency is improved. Even the ocular prosthetic table is disengaged, debris is prevented from being brought into eye sockets to introduce foreign matters, the infection risk of a patient is reduced, the ocular prosthetic table main body is uniformly manufactured according to operation standard parameters, and the stability and flexibility of the ocular prosthetic table main body can be better guaranteed.