89 results about "Artificial intraocular lens" patented technology

The invention provides an intraocular lens with a lens eye, and relates to the technical field of medical instruments. The intraocular lens with the lens comprises an optical main body with a front surface and an aspheric rear surface; a support portion disposed around the optical body; and a transition portion disposed between the optical body and the support portion; the front surface and the rear surface of the transition part are respectively connected with the front surface and the rear surface of the optical main body, and the curvature radius of the front surface of the transition part is larger than that of the rear surface of the transition part. Apertures can be reduced, the imaging quality and stability can be improved, the safety after implantation can be improved, and the risk of blocking of the artificial lens is reduced.

To improve operability in an intraocular lens insertion instrument that can be used both by a rotation operation method and a pressure operation method.SOLUTION: An intraocular lens insertion instrument includes a cylindrical body 12, an extrusion member 50 for extruding an intraocular lens from a lens installation part 26 by moving the inside of the cylindrical body 12 in an axial direction, a pressing member 60 configured to be separated from the extrusion member 50 for moving the extrusion member 50 in an axial direction by pressing the rear end of the extrusion member 50 along the axial direction, and a mechanical transmission mechanism for converting the drive by rotation operation of a rotation member 70 into a linear movement. The intraocular lens can be extruded by moving the extrusion member 50 forward independently of the pressing member 60 by the rotation operation R of the rotation member 70 in the mechanical transmission mechanism.SELECTED DRAWING: Figure 2

The utility model belongs to the technical field of medical instruments, and particularly relates to an artificial lens for people with color vision disorder. The surface of the intraocular lens is a spherical surface or at least one surface is an aspheric surface or at least one surface is a discontinuous surface, the intraocular lens is colored and at least uses one coloring dye, and the coloring range of the intraocular lens at least comprises part of an optical area. According to the intraocular lens, at least one inhibition band exists in the wavelength range of 380 nm to 780 nm of the spectrum transmittance of the intraocular lens, and the minimum value of the spectrum transmittance in the inhibition band is lower than the nearest peak value of the spectrum transmittance in the wavelength range of 380 nm to 780 nm, so that the situation that the surface roughness is too high due to film coating is avoided, cell deposition on the surface of a film layer is avoided, the color vision correction safety is improved, and the color vision correction efficiency is improved. The correction effect of color vision correction is guaranteed, the problem that the surface reflectivity is high due to the fact that the surface of the artificial lens is coated with a film is effectively solved, optical interference is prevented, the retina is prevented from receiving stray light, and the signal-to-noise ratio of a retina image is prevented from being reduced.

The invention belongs to the field of high polymer materials, and particularly relates to application of a polymer as an intraocular lens material and an intraocular lens. The polymer prepared by using the hydrophobic monomer, the hydrophilic monomer, the cross-linking agent and the initiator as raw materials is used as the artificial lens, and the obtained artificial lens can be water-triggered to harden, and has the advantages of foldability, small incision implantation, water absorption hardening after implantation, strong supporting property and the like.

There is provided an intraocular lens injector for injecting an intraocular lens into an eye, including: an injector main body 5; an injection tube 7 attached to a tip part of the injector main body 5 and having a nozzle portion 7b; and an attachment member 16 having a protruding surface disposed in a state of protruding to outside from an outer circumferential surface of the nozzle portion 7b, wherein the attachment member 16 has an engaging portion 16b engaged with a sleeve portion 16a and is configured to be movable with respect to the injection tubed 7.

The invention discloses a detachable preassembled intraocular lens implanting system which comprises an implanting device and a detachable leading-in head assembly, the implanting device comprises a sleeve, a push rod, a push needle, a clamping cap and a damping ring, the push needle is arranged in the sleeve, the tail of the push needle is in butt joint with the push rod, the push needle, the push rod and the sleeve are connected through the clamping cap, and the damping ring is arranged in the sleeve. The damping ring is arranged between the push needle and the sleeve; the detachable leading-in head assembly comprises a leading-in head, a pre-installing bin and an artificial lens, the risk that the lens is polluted and damaged can be effectively reduced, the loop clamping can be prevented, it can be guaranteed that the lens is not damaged, the injection speed is more uniform, injection is more stable, injection resistance is smaller, injection is smoother, and the injection hand feeling is better; the application prospect is wide, and popularization and application are facilitated.

The invention provides a deep-learning artificial lens degree determination method and device for a equi syndrome patient and electronic equipment, and relates to the technical field of medical artificial intelligence, and the method comprises the steps: obtaining clinical data of the equi syndrome patient; preprocessing the clinical data of the equi syndrome patient to obtain an eight-dimensional feature data set; performing first-layer prediction on the eight-dimensional feature data set through a plurality of regression models to obtain a plurality of intraocular lens preliminary prediction degrees; and splicing the plurality of preliminary predicted degrees of the artificial lens with the eight-dimensional feature data set, and performing second-layer prediction on the spliced data to obtain a final predicted degree of the artificial lens. According to the method, the IOL degree of the CEL patient can be accurately and stably calculated, so that the technical bottlenecks of a traditional formula and an existing single AI model are overcome, and the success rate of an operation and the visual prognosis of the patient are assisted to be improved.

An apparatus includes an ocular drug delivery device having a reservoir configured to hold at least one medication for an eye and a micro-insert configured to be inserted under an anterior leaflet of a capsular wall in the eye. An anterior surface of the micro-insert is configured to contact an inner capsular wall surface of the anterior leaflet. A posterior surface of the micro-insert includes a ridge configured to contact an edge of an artificial intraocular lens.

A system for selecting an intraocular lens (IOL) for implantation in an eye includes a controller adapted to selectively execute a finite element model (FEM) and a machine learning module. The controller is adapted to receive input data including one or more biometric parameters of the eye. Based on the input data, a plurality of capsule parameters are extracted via the machine learning module. The controller is adapted to determine an axial displacement factor, in part, based on the plurality of capsule parameters via the FEM. The axial displacement factor takes into account the predicted axial offset of the IOL after implantation in the eye. When calculating lens constant parameters using the FEM and machine learning module, the axial displacement factor can be incorporated into the final IOL power.

The application discloses an STM2457-PLGA nano drug, an artificial lens and a preparation method and application thereof, and relates to the technical field of biological medicine. The preparation method of the STM2457-PLGA nano drug comprises the following steps: preparing nano microspheres by injecting an oil phase comprising STM2457 and PLGA and a water phase comprising PVA into a microfluidic chip, and obtaining the STM2457-PLGA nano drug after freeze-drying of the nano microspheres, wherein the particle size of the STM2457-PLGA nano drug is 50-300 nm. The long-acting release of STM2457 carried by the surface-modified artificial lens is realized through the controlled release effect of the PLGA nano microspheres, and the slow-release period can cover the high-incidence period of postoperative complications of cataract surgery through process optimization, far exceeding the traditional short-term release system, and can continuously meet the long-term prevention and treatment needs after surgery, and effectively reduce the risk of complications such as after-cataract.

The invention relates to an injector (20) for inserting an intraocular lens (1) into an eye (10), comprising an injector axis (26), an injector body (30) which defines a folded chamber (21), an injector tip (22) with an opening (23), and a plunger (40) which is arranged in the injector in a longitudinally displaceable manner, the plunger is designed to move the plunger in an insertion direction (44) of the injector to deliver the intraocular lens out of the folding chamber into the injector tip and then out of the injector via the opening, the injector tip being chamfered in the region of the opening by the injector tip having an end face (27). The injector body has an end face which directly adjoins the opening and the normal and the injector axis enclose an end face angle which differs from 0 DEG, and wherein the injector tip is mounted so as to be pivotable about the injector axis and relative to the injector body and has an injector tip initial state and an injector tip end state, the injector tip can be brought from an injector tip initial state into an injector tip end state by pivoting about an injector tip angle in the injector circumferential direction (28) in relation to the injector axis, said angle being in the range of 90 DEG to 270 DEG.

The present invention discloses an intraocular lens suspension structure, comprising a first fixed plate and a second fixed plate, wherein the first fixed plate and the second fixed plate are fixedly connected via a guide column, a first movable plate and a second movable plate are provided between the first fixed plate and the second fixed plate, and the first movable plate and the second movable plate are slidably matched with the guide column; a curved needle is provided on the left end face of the first movable plate via a clamping mechanism, and a clamping mechanism that cooperates with the curved needle is provided on the right end face of the second movable plate; an auxiliary fixator that cooperates with the curved needle is provided between the first fixed plate and the second fixed plate. The intraocular lens suspension structure of the present invention has an ingenious design, practical functions, and a simple structure, and effectively solves the problem in existing equipment that the curved needle on the first movable platform is difficult to align with the connecting tube on the second movable platform after passing through the eyeball and the intraocular lens, thereby affecting the efficiency of the surgical implementation.

The utility model belongs to the field of artificial lenses, and particularly discloses an artificial lens based on a liquid lens. The intraocular lens includes: an annular stent; the artificial muscle is fixed on the inner side of the annular bracket; the liquid lens is connected with the artificial muscle, the liquid lens is arranged at the center of the annular support, and the focal length of the liquid lens can be changed by adjusting external voltage; and the wireless receiving coil is arranged on the annular bracket, is electrically connected with the liquid lens, and is used for receiving the wireless induction electric energy and applying an external voltage to the liquid lens. According to the intraocular lens, the focal length can be changed by adjusting the external voltage of the liquid lens, the focal length adjusting mode is simple and easy to control, and the accuracy is high.

The present invention belongs to the field of artificial lens manufacturing, and specifically relates to a UV polymerizer for preparing artificial lenses and a method for curing artificial lenses. The UV polymerizer is provided with a box body and a cover body, the cover body is covered on the box body, a plurality of light holes are provided on the cover body, and a mechanical arm and a touch screen controller are installed and fixed, a transparent glass sheet, a variable pitch lens and an aperture are fixedly arranged in sequence below the light holes, the aperture is connected to a UV light source and an aperture controller arranged in the box body, an ultrasonic generator is also arranged in the box body, the UV light source, the aperture controller, the ultrasonic generator and the mechanical arm are all connected to the touch screen controller, the ultrasonic generator is connected to the aperture through an empty conduit, and the UV light source is connected to the aperture through an optical fiber tube. A method for curing artificial lenses using a UV polymerizer is also provided. The artificial lens manufactured by the device and method of the present invention has high strength and good toughness, does not require post-processing such as grinding and polishing, has no obvious cytotoxicity, and has greatly improved mechanical properties compared with traditional cutting processes.

The invention relates to the technical field of ocular refraction, in particular to an intraocular lens with a lens and a surface design method of the intraocular lens. The intraocular lens with the lens comprises an optical part and a supporting part, the rear surface of the intraocular lens is arranged to be an aspheric surface, and the curvature of the rear surface is continuously and gradually reduced from the center of the intraocular lens to the periphery of the intraocular lens. The geometric structure can be highly adapted to an aspheric surface form which is also presented by the front surface of a natural crystalline lens of a human eye and of which the curvature is gradually reduced from the center to the periphery. Due to the high consistency of the form, after the artificial lens is implanted, a more uniform, stable and safe gap can be formed between the rear surface of the artificial lens and the front surface of a natural lens, and unnecessary physical contact or friction between the artificial lens and the natural lens is effectively avoided; therefore, the long-term wearing comfort of a patient and the stability of postoperative visual quality are greatly improved, and the problems of potential safety hazards and poor comfort in the prior art are really solved.

The utility model relates to the technical field of intraocular lenses, in particular to a diffraction type multi-focus intraocular lens. According to the multi-focus intraocular lens capable of reducing the bad optical phenomenon, achromatism and even zero chromatic aberration are achieved by adjusting the matching degree between the refractive index of the material and the additional focal power of the diffraction perifocus, and therefore the glare occurrence rate of the diffraction type multi-focus intraocular lens is greatly reduced, and the optical quality of the diffraction type multi-focus intraocular lens is improved. Good far-near vision or far-middle-near whole-course vision is obtained after the operation, and the visual quality satisfaction degree after the operation is improved.

The invention relates to the technical field of intraocular lens pushing injectors, in particular to an intraocular lens pushing injector with adjustable pushing amplitude, which comprises a pushing injector body, a pushing injector cavity is arranged in an inner cavity of the pushing injector body, and a pushing injector crystal loading part and a pushing injector connecting part are respectively arranged at two ends of the pushing injector body. Adjustment of the propelling amplitude of the piston rod is achieved through the propelling amplitude adjusting mechanism, the propelling stroke of the piston rod is accurately grasped, and self-locking of the piston rod and the injection rod in the propelling process is guaranteed through structural optimization of the piston rod, containing of the center pull rod and arrangement of a chute toothed bar in a matched mode. The lens extrusion condition caused by accidental retraction and mistaken pushing of the artificial lens is effectively prevented; in this way, the precision and safety of the operation are improved while the requirement for precise implantation of the artificial lens is met, the pain of a patient can be reduced, the operation time can be shortened, and the operation is safer and more effective.

An apparatus includes an intraocular pseudophakic contact lens having an optical lens formed of a lens material and multiple haptics radially extending from a peripheral edge of the optical lens and configured to be inserted under an anterior leaflet of a capsular wall in an eye in order to capture and confine the haptics under the anterior leaflet. The haptics include the lens material. Anterior surfaces of the haptics are configured to contact an inner capsular wall surface at the anterior leaflet. The anterior surface of each haptic is continuous with an anterior surface of the optical lens. Posterior surfaces of the haptics include ridges configured to contact at least one edge of an artificial intraocular lens and capture the artificial intraocular lens between the ridges. At least a portion of the posterior surface of each haptic is positioned below a posterior surface of the optical lens. The optical lens is multi-focal.

The polishing machine comprises a base, a rotating roller and a blocking piece, a supporting plate is arranged on the top wall of the base, a driving motor is arranged on the supporting plate, the output end of the driving motor rotationally penetrates through the supporting plate and extends out, the rotating roller is connected to the output end of the driving motor, and the blocking piece is arranged on the rotating roller. A plurality of placing grooves are formed in the rotating roller, and the plugging piece is arranged on the rotating roller; and the blocking piece comprises a fixing ring and a baffle, the fixing ring is fixedly arranged on the rotating roller in a sleeving mode, a connecting piece is rotationally arranged on the fixing ring, the baffle is arranged on the connecting piece, and the baffle can be far away from or be clamped and covered on the rotating roller under the action of the connecting piece. The utility model belongs to the technical field of intraocular lens polishing machines, and particularly relates to a polishing machine for machining an intraocular lens.

The utility model discloses an intraocular intraocular lens auxiliary implantation system which comprises a leading-in head, a main body, a push rod, a stop pin and an intraocular lens, the front end of the main body is connected with the leading-in head, the push rod is inserted into the main body, the intraocular lens is placed in the leading-in head, an anti-rotation groove is formed in an inner cavity of the main body, a push-injection head is arranged at the front end of the push rod, and the stop pin is inserted into the push-injection head. The rear end of the injection head is provided with an injection stopping groove, the side face of the injection stopping groove is provided with an anti-rotation structure, the anti-rotation structure is matched with the anti-rotation groove, and the lower side of the leading-in head is provided with a connecting mechanism. The leading-in head is of a flat plate type and does not need to be folded, the intraocular lens is easy to load, and potential risks are avoided; the guide-in head is matched with a reusable intraocular lens injector for use, various guide-in heads can be matched with the same reusable intraocular lens injector, the cost can be reduced, the market competitiveness can be improved, the guide-in head is convenient to assemble and disassemble, and the guide-in head can be used for hydrophobic intraocular lenses and also can be used for hydrophilic intraocular lenses.

A system for correcting vision in an eye that uses a premium, customized IOL, the system comprising: (1) optical aberrometer means for measuring wavefront aberrations of the eye; (2) computer means for designing a wavefront-customized correction profile for the IOL; (3) manufacturing means for creating a customized IOL with the wavefront-corrected profile; and (4) surgical means for implanting the customized IOL in the eye. Alternatively an uncorrected IOL is first implanted and aligned in the eye, followed by in-situ scanning a femtosecond laser spot across the implanted IOL to locally change an index of Refraction of the IOL material in-situ.

The invention relates to an intraocular lens introduction head. A hollow inner cavity channel is formed in the guide-in head body, the inner cavity channel is an intraocular lens folding and transporting channel, and the inner cavity channel is formed by fitting and gradually changing a plurality of sections different in shape and size so as to guide an intraocular lens to be naturally converted into a folded state from an unfolded state in the injection process. Therefore, the gradual change section design can simulate the natural folding process of the crystalline lens, so that the crystalline lens is more stable to push and inject, and the problems of crystalline lens damage or asymmetric folding caused by abnormal loop upturning and sudden change of external force and the like are avoided.

A method of altering a refractive property of a crosslinked acrylic polymer material by irradiating the material with a high energy pulsed laser beam to change its refractive index. The method is used to alter the refractive property, and hence the optical power, of an implantable intraocular lens after implantation in the patient's eye. In some examples, the wavelength of the laser beam is in the far red and near IR range and the light is absorbed by the crosslinked acrylic polymer via two-photon absorption at high laser pulse energy. The method also includes designing laser beam scan patterns that compensate for effects of multiphone absorption such as a shift in the depth of the laser pulse absorption location, and compensate for effects caused by high laser pulse energy such as thermal lensing. The method can be used to form a Fresnel lens in the optical zone.

A method and assembly for removing an intraocular lens from an injection molded mold half. With the method and the assembly, first spill ring material is removed from the mold half. Subsequently, the mold / lens-assembly is subjected to an oscillating mechanical load without substantial deformation of at least a part of the mold half that is in direct contact with the lens body. The oscillating mechanical load has an oscillation frequency which is in a range that excites the mold / lens-assembly to break bonds between the intraocular lens and the mold half. After that, a static mechanical push force is exerted on the bottom side of the mold half to at least partly separate the intraocular lens from the mold half.

An apparatus includes an intraocular pseudophakic contact lens having an optical lens and haptics extending radially from the optical lens. The haptics are configured to be inserted under an anterior leaflet of a capsular wall in an eye in order to capture and confine the haptics under the anterior leaflet. Anterior surfaces of the haptics are configured to contact an inner capsular wall surface at the anterior leaflet. Posterior surfaces of the haptics include ridges configured to contact at least one edge of an artificial intraocular lens and capture the artificial intraocular lens between the ridges. The anterior surface of each haptic includes one or more divots or holes.

This application provides an analytical device for the combined Toric intraocular lens implantation effect, relating to the technical field of intraocular lens scanning. It includes an intraocular lens scanner with a display screen fixedly mounted on its top. Multiple detection modules can detect the Toric intraocular lens implantation effect from multiple dimensions. A data analysis module integrates and intelligently analyzes this data, achieving a comprehensive and accurate assessment of the implantation effect and providing doctors with more accurate diagnostic information. The device can provide diagnostic suggestions and treatment plan references based on the data analysis results, helping doctors develop more scientific and personalized treatment plans and improve medical quality. The human-machine interface display screen and voice prompt module make the device simple and convenient to operate, and the detection process efficient. It reduces the professional threshold for operators, shortens the detection time, improves medical efficiency, and provides patients with a better medical experience.

A fiducial is generated on an internal anatomical structure of the eye of a patient with a surgical laser. A toric artificial intraocular lens (IOL) is positioned so that a marker of the toric IOL is in a predetermined positional relationship relative to the fiducial. This positioning aligns the toric IOL with the astigmatic or other axis of the eye. The toric IOL is then implanted in the eye of the patient with high accuracy.

Disclosed are ophthalmic silicone oils, methods of synthesizing such silicone oils, and methods of manufacturing fluid-filled intraocular lenses. The ophthalmic silicone oil can comprise branched polymers comprising a cyclosiloxane core and three or more linear polysiloxane arms linked to the cyclosiloxane core. A method of synthesizing the ophthalmic silicone oil can comprise opening a cyclosiloxane ring with a chlorosilane reagent to yield a linear polysiloxane arm and linking the linear polysiloxane arm to a cyclosiloxane core molecule in a hydrosilylation reaction.

The invention relates to the technical field of lens design, and discloses an artificial lens design optimization method and system, and the method comprises the steps: collecting geometric parameter data of an artificial lens; calculating spherical aberration, coma aberration and astigmatism values under different sight distances by using a ray tracing algorithm, and quantitatively analyzing the imaging quality of the intraocular lens through a wavefront error evaluation function and a modulation transfer function to obtain an optical performance evaluation result; finite element analysis is carried out on the artificial lens, a three-dimensional structure model is constructed, stress-strain analysis and dynamic loading analysis are carried out on the three-dimensional structure model, and stress distribution data and deformation data are obtained; and inputting the optical performance evaluation result, the stress distribution data and the deformation data into a multi-objective optimization function, generating multiple groups of parameter design combinations through a random disturbance mode, and performing optimization calculation and parameter space search on the multiple groups of parameter design combinations to obtain a target parameter design combination, thereby improving the efficiency and accuracy of the artificial lens design.