55 results about "Cataract surgery" patented technology

The invention relates to the technical field of intelligent medical treatment, and discloses a cataract surgery navigation control method based on multi-modal fusion, which comprises the following steps: carrying out lightweight preprocessing on an eye fundus image, ultrasonic probe data, a corneal topographic map and intraocular pressure parameters through an edge computing architecture, and constructing an efficient feature extraction network by adopting a knowledge distillation technology; self-adaptive feature fusion is realized based on an uncertainty quantification mechanism, real-time structure recognition is provided by utilizing an augmented reality technology, an intelligent navigation strategy is generated by pre-training a reinforcement learning model, an instrument control system with multilayer safety guarantee is established, and continuous optimization of the system is realized by adopting an online learning mechanism. According to the invention, the precision and safety of the operation are effectively improved, and an effective technical scheme is provided for intelligent navigation control of the cataract operation.

The invention relates to the field of surgical robots, and particularly discloses an intraoperative risk assessment system for a cataract surgical robot, comprising: a patient biomechanical monitoring unit for collecting a contact force between an instrument and an eye tissue, and calculating an anterior chamber equivalent pressure value according to an axial force component of the contact force and a contact area between the instrument and a cornea; the patient optical imaging monitoring unit is used for collecting microstructure images of the cornea and the lens capsule and quantifying the energy release density of ultrasonic emulsification; the robot motion parameter monitoring unit is used for collecting joint motion resistance, instrument tail end three-dimensional coordinates, motion speed and attitude angle of the robot; the multi-mode joint reasoning unit is used for identifying a high-risk operation state when the contact force is higher than a first preset value and the energy release density is higher than a second preset value; by adopting the technical scheme of the invention, multi-dimensional real-time monitoring can be realized, and a dynamic risk prediction model can be established by fusing heterogeneous data through an intelligent algorithm.

The invention discloses a dioptric scleroderma cataract dynamic intraocular pressure stable control ultrasonic emulsification system adaptive to a dual-channel operation, which comprises a host control unit, an ultrasonic emulsification handle, a perfusion and suction system, an intraocular pressure monitoring unit, a pressure balance module and a scleroderma fragmentation module, through cooperation of the intraocular pressure control module and the two-way operation type adaptive control module, a high-precision filling valve and a closed-loop suction pump are synchronously adjusted in real time according to anterior chamber built-in and external monitoring fusion data, and intraoperative intraocular pressure fluctuation is controlled within + / -2 mmHg; through pulse modulation and a self-adaptive negative pressure curve of the hardcore fragmentation enhancement module, the stability of the anterior chamber is ensured while the hardcore fragmentation efficiency is improved; fluid dynamics and energy parameters can be automatically optimized according to conventional incisions or micro incisions; according to the system, the anterior chamber stability problem in the high-difficulty cataract surgery is solved.

The present invention relates to an ophthalmic composition in the form of an aqueous solution containing levofloxacin or salt or derivative thereof and ketorolac or salt or derivative. The present invention relates to an ophthalmic composition in the form of an aqueous solution containing levofloxacin or salt or derivative thereof and ketorolac or salt or derivative thereof, for use in a method for the treatment of conjunctivitis and for the prevention or treatment of inflammation or prevention of infection after cataract surgery in a subject, according to a dosage regimen that improves patient compliance and tolerability and enables the prevention and treatment of intermediate / antibiotic-resistant infections.

A method for collecting biometric measurement data of an eye on the basis of different measurement modalities, allowing for physiologically correct, representative, and robust biometric measurement data. In the method, the measurement data for individual measurement variables and the dynamic behavior of the eye are recorded continuously at the highest possible repetition rate over the measurement time. The individual phases of the dynamics of the eye which define the limits of the phase for stable vision are analyzed on the basis of the measurement values, and only the measurement data for the individual measurement variables are output which have been detected during the phase for stable vision. Although the proposed method is provided for collecting biometric measurement data in preparation for a cataract operation, the method can also be applied to other areas of ophthalmology to generate error-free measurement data or recordings of the eye.

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 aims at providing a device for facilitating cornea wetting in cataract surgery, and relates to the technical field of medical instruments, an infusion assembly and an eyelid opening assembly are installed on a support, a water dripping rod is installed on an eyelid opening device of the eyelid opening assembly, and a doctor does not need to hold the device for dripping water by hand; the control panel is arranged on the bracket, so that the running power of the infusion pump, the on-off of the infusion pump and the timing working time of the infusion pump can be controlled flexibly to control the water flow speed of the point water and the timing point water so as to ensure that the cornea is always in an ideal wet state; the distance between the eye speculum on the two sides of the fixed part and the eye speculum on the two sides of the movable part can be adjusted through stretching of the fixed telescopic rod of the fixed part, and therefore the distance between the upper eyelid and the lower eyelid is controlled. The distance between the eye speculum bodies on the two sides of the movable part can be further adjusted by rotating the side screw rods of the movable part, and therefore different opening space shapes are met; the distance between the eye speculum of the movable part and the eye speculum of the fixed part can be adjusted by rotating the movable screw rod, so that the size of the expanded space is adjusted.

The utility model discloses a kind of cataract surgery tear capsule auxiliary devices, including vertically arranged U-shaped seat, U-shaped seat is connected in one side of two movable seats by drive assembly, movable seat is fixedly connected in one end of long rod, the other end of long rod is screw-connected with the first screw rod perpendicular to long rod, the one end of first screw rod is equipped with first knob, the other end of first screw rod is equipped with annular groove, the both sides of U-shaped seat are equipped with corresponding connecting block, connecting block is fixed to patient face by corresponding bandage, this kind of cataract surgery tear capsule auxiliary device uses, first, by bandage, the whole is fixed to patient face, then by drive assembly, two movable seats drive corresponding first screw rod in opposite or opposite direction synchronous movement, to tear open by two first screw rods respectively to upper eyelid and lower eyelid, annular groove is equipped on first screw rod, support eyelid by annular groove, it is convenient to tear capsule to eyeball.

The application discloses a pre-cataract surgery visual function expectation evaluation method, collects preoperative basic examination data, subjective expectation expression data and a preset visual task scene library, and screens a candidate visual task scene set; a scene acceptance result set is obtained through patient acceptance interaction discrimination; subjective expectation expression data are combined and analyzed to generate a visual function requirement parameter set; a visual task tolerance threshold is further quantified and structured and coded into an expectation feature vector, and a preoperative visual function expectation evaluation result is output, which is used for preoperative lens matching, preoperative communication prompting or postoperative satisfaction risk prediction.

The invention belongs to the technical field of ophthalmologic surgical instruments, and provides a posterior capsular membrane polisher in a cataract surgery in order to solve the problem that existing manual operation is low in accuracy. Comprising a head fixing module for fixing the head of a patient; the movable positioning module is arranged on the head fixing module and comprises up-down telescopic assemblies arranged on the two sides of the head fixing module, a longitudinal moving assembly and a transverse moving assembly are arranged on the up-down telescopic assemblies, and a polishing module mounting frame is arranged on the transverse moving assembly; the polishing head multifunctional integrated module comprises a supporting frame connected through a polishing module mounting frame, the supporting frame is provided with an eye periphery supporting rod and a micro-pressure induction push rod, the micro-pressure induction push rod is connected with a connecting plate, the connecting plate is connected with a polishing rod, and a polishing head is arranged in the polishing rod. By means of the integrated design, it can be guaranteed that the operation is completed through one-time polishing operation, errors caused by manual operation are avoided, previous tedious steps are omitted, the operation time is shortened, and the operation risk is reduced.

A method of treating or ameliorating cataract surgical complications is provided. The method comprises administering to a subject in need thereof a nanoparticle of beclosone propionate (CLOBETASOL PROPIONATE). The method comprises administering to the subject in need thereof a nanoparticle of beclosone propionate.

Methods and systems for predicting the post-operative effective lens position (ELP) of a prosthetic intraoccular lens (IOL) in cataract surgery using novel pre-operative measurement(s) of the natural lens curvatures.

Methods are disclosed for operating a laser. Such methods may comprise operating the laser to emit electromagnetic energy in an infrared range in pulses with a pulse duration of greater than 1 ns. The wavelength of infrared electromagnetic energy may be in a range of about 2.6μ to about 3.3μ or about 1.8μ to about 2.1μ. The pulses may have a pulse energy selected to deliver an energy density of 2,500 J / cm3 or greater. The laser electromagnetic energy may be delivered for a medical application, such as cataract surgery to break apart a cataractous lens by photodisruption.

A method for collecting biometric measurement data of an eye on the basis of different measurement modalities, allowing for physiologically correct, representative, and robust biometric measurement data. In the method, the measurement data for individual measurement variables and the dynamic behavior of the eye are recorded continuously at the highest possible repetition rate over the measurement time. The individual phases of the dynamics of the eye which define the limits of the phase for stable vision are analyzed on the basis of the measurement values, and only the measurement data for the individual measurement variables are output which have been detected during the phase for stable vision. Although the proposed method is provided for collecting biometric measurement data in preparation for a cataract operation, the method can also be applied to other areas of ophthalmology to generate error-free measurement data or recordings of the eye.

The utility model discloses a cataract capsulorhexis guide ring structure, and relates to the technical field of cataract surgery, the cataract capsulorhexis guide ring structure comprises a guide ring body, the guide ring body is provided with a connecting part, the connecting part is fixedly provided with a positioning support, the guide ring body is provided with a girdling assembly, the middle position of the guide ring body is provided with an adsorption mechanism, and the adsorption mechanism is provided with an adsorption mechanism. The adsorption mechanism comprises an adsorption head mounted in the middle of the guide ring body, an adsorption opening is formed in the bottom of the adsorption head, a silica gel ring is arranged at the adsorption opening, a positioning ring seat is fixedly mounted in the adsorption head, a mounting notch is formed in the positioning ring seat, a locking mechanism is fixedly mounted in the mounting notch, and the silica gel ring is arranged on the silica gel ring. A butt joint opening is formed in the side wall of the adsorption head, and an adsorption pipeline is connected to the butt joint opening. According to the cataract capsulorhexis guide ring structure, through cooperative use of the adsorption mechanism and the locking mechanism, the annularly-cut capsular membrane can be rapidly taken out, the number of operation steps is reduced, and the operation time is shortened.

The invention discloses a cataract surgery cooperation method and system based on a wearable intelligent surgical glove, and belongs to the technical field of man-machine interaction.The method comprises the steps that through the intelligent surgical glove worn on the hand of a user, operation actions of all parts of the hand are tracked in real time, and hand action parameters of the user are obtained; performing anomaly detection on the hand action parameters based on a preset optimal operation path and an intraoperative OCT image stream; wherein the optimal operation path is obtained based on historical trajectory data and a corneal topographic map of the patient; according to the operation risk early warning corresponding to the abnormal detection result, the hand action of the user is adjusted through the intelligent operation glove. Therefore, by implementing the method and the device, the operation path indication can be provided for the operator during the cataract operation, and the operator can be reminded in time when the abnormal operation may cause the operation risk.

A pupil expansion device for ophthalmic surgery includes a closed-loop ring body defining a central aperture and a plurality of flanges arranged circumferentially around the ring body. The flanges comprise non-folded flanges defining a plane of the device and folded flanges positioned alternately between the non-folded flanges. The folded flanges are connected to the ring body by notch regions and are movable between a resting configuration and an expanded configuration to enlarge the pupil. In one embodiment, the non-folded flanges, folded flanges, and notch regions are coplanar in the resting configuration. In another embodiment, the folded flanges are tilted posteriorly relative to the plane defined by the non-folded flanges by an angle between approximately 1 degree and 30 degrees. The device may be formed as a single-piece structure and is configured for use during ophthalmic surgical procedures, including manual small incision cataract surgery.

The utility model discloses a cataract lenticular nucleus enucleation tool, which relates to the technical field of cataract surgery, and comprises a wide box, a sliding tube is arranged above the wide box, a pressing rod is arranged in the sliding tube in a sliding manner, the pressing rod is fixedly connected with a pressing plate, a moving groove I is formed in the pressing rod, a spring II is arranged in the moving groove I, and the spring II is connected with a clamping block. Clamping grooves are formed in the two sides of the inner wall of the sliding pipe, the clamping grooves are matched with the clamping blocks, the clamping grooves are communicated with the second moving groove, a sliding block is installed in the second moving groove in a sliding mode, the sliding block is connected with the inner wall of the second moving groove through a third spring, a pushing block is fixedly installed on one side of the sliding block, and the pushing block corresponds to and is matched with the clamping grooves. The position of the pressing rod is conveniently adjusted by pressing the pressing rod or the sliding block, then the elastic balloon is extruded or reset by combining the first spring and the pressing plate, additional complex rotating and moving operation is not needed, and the operation efficiency is greatly improved.

This invention provides an adjustable anterior chamber depth cataract surgery irrigation cannula, belonging to the field of irrigation cannula technology. It includes an irrigation mechanism comprising a housing with an ultrasonic emulsification needle disposed inside, a tube body at one end of the housing, the tube body being fitted over the ultrasonic emulsification needle, a rubber ring on the inner wall of the tube body, a circular ring on the outer wall of the housing, a driving part on the circular ring, a follower part on the driving part, and a pulling part on the tube body for expanding the tube body diameter; an auxiliary mechanism including a groove on the tube body, a clamping part on the pulling part for preventing the tube body from sliding on the housing, and a cutting part on the pulling part for facilitating separation of the tube body from the housing; and an anti-fall mechanism including a threaded ring on the housing with a locking part, and a snap-fit ​​part on the driving part. This invention, through the inclusion of the irrigation mechanism, auxiliary mechanism, and anti-fall mechanism, makes the installation of the tube body faster.

The crystal nucleus delivery device structurally comprises a connecting ring, a grip, a supporting tube, a recycling tube and an adjusting rod, the connecting ring is connected between the supporting tube and the recycling tube, the adjusting rod is arranged in the recycling tube in a sliding fit mode, and the end of the adjusting rod is connected with the grip; the transition ball is arranged on the delivery pipe, and the transition ball is matched with the rubber plate, so that when a crystal nucleus rolls on the rubber plate, the crystal nucleus gradually rotates to be close to the delivery pipe and can collide and abut against the transition ball, the transition ball rotates at the pipe opening of the delivery pipe in the same direction, and the crystal nucleus is meshed for multiple times and divided into broken nucleuses; and then the crystal nucleus enters the instrument to be ground and crushed into smaller volume, and is scattered into the delivery pipe, so that the delivery of the crystal nucleus is better assisted, and the delivery capability of the instrument on the crystal nucleus for the ophthalmic cataract surgery is ensured.

The present invention relates to a chopper for cataract surgery, comprising: a barrel; a chopper needle provided in one region of the outer periphery of the barrel so as to segment the lens of the eye; a moving body movably accommodated in the barrel; a plurality of mirror segments which are arranged along the outer periphery of the moving body so as to be withdrawn from or inserted into the barrel, and which each include, at one plate surface, a mirror surface that reflects light; and an operation part connected to the moving body so as to allow the moving body to advance or retreat so that the plurality of mirror segments are withdrawn from or inserted into the barrel.

The utility model discloses an operating bed for a femtosecond laser-assisted cataract surgery, and aims to solve the problem that a patient can not conveniently lie on an existing ophthalmic operating bed in the cataract surgery. The operating bed comprises a bed body and a base, a lifting mechanism is arranged between the bed body and the base, an upper connecting piece is arranged at the bottom of the bed body, and a lower connecting piece matched with the upper connecting piece is arranged at the top of the lifting mechanism. The lower connecting piece comprises a guide stud and a positioning hole, the upper connecting piece comprises a connecting plate and a sleeve, and the sleeve is provided with a first guide hole matched with the guide stud and a drawing pin matched with the positioning hole. Through the arrangement of the upper connecting piece and the lower connecting piece, the bed body can be rotated by a certain angle when a patient lies on the bed body, the patient can lie down normally conveniently, then the bed body can be rotated back to an operation position, meanwhile, the height of the bed body can be adjusted through the lifting mechanism, different operation requirements are met, and the use convenience and practicability of the operation bed are improved.

Lenses and methods are provided for improving peripheral and / or central vision for patients who suffer from certain retinal conditions that reduce central vision or patients who have undergone cataract surgery. The lens is configured to improve vision by having an optic configured to focus light incident along a direction parallel to an optical axis at the fovea in order to produce a functional foveal image. The optic is configured to focus light incident on the patient's eye at an oblique angle with respect to the optical axis at a peripheral retinal location disposed at a distance from the fovea, the peripheral retinal location having an eccentricity between −30 degrees and 30 degrees. The image quality at the peripheral retinal location is improved by reducing at least one optical aberration at the peripheral retinal location. The method for improving vision utilizes ocular measurements to iteratively adjust the shape factor of the lens to reduce peripheral refractive errors.

A cataract surgical instrument includes a guide tube, a deformation member, and a net bag. An end portion of the guide tube is provided with an opening in communication with an inner cavity of the guide tube. The deformation member includes a deformation part and a connecting part that is connected to the deformation part. The connecting part is arranged through the inner cavity and can move in the axial direction of the guide tube. The net bag is connected to the deformation part. The connecting part drives the deformation part and the net bag to move in the axial direction of the guide tube, such that the deformation part and the net bag retract into the inner cavity or expand out of the inner cavity.

The invention relates to the field of medical equipment, in particular to a posterior capsular membrane polishing device used in a cataract treatment surgery process, which comprises an operating end and a host end, the operating end comprises a pen type scour, a miniature brushless motor and a pressure sensor are arranged in the front end, and a hollow motor shaft is connected with an injector needle consisting of a polishing head, a needle stem and a needle seat; the flusher is provided with anti-slip lines, a rotation control key and a flow speed control key; the main machine end comprises a water supply end (a water pump and a water tank) and a control end, the water pump conveys normal saline to the polishing head, the control end achieves rotating speed / flow speed control, and the flow speed supports multi-gear self-definition. The pressure sensor monitors a force value, and when the force value exceeds the standard, sound-light alarm and shutdown protection are triggered. According to the device, polishing and flushing are synchronized, the accuracy and safety are improved, and iatrogenic injuries are reduced. According to the equipment, precise speed control, stable operation, multifunctional polishing and safety monitoring are achieved, cleaning thoroughness is improved, and the iatrogenic injury risk is reduced.

Certain aspects of the present disclosure provide techniques for performing surgical ophthalmic procedures, such as cataract surgeries. An example method generally includes generating, using one or more measurement devices, one or more data points associated with measurements of one or more anatomical parameters for an eye to be treated. Using one or more trained machine learning models, one or more recommendations are generated including one or more IOL parameters for the IOL to be used in the cataract surgery based, at least in part, on the one or more data points. The machine learning models are trained based on at least one historical data set of data points associated with measurements of anatomical parameters mapped to treatment data and treatment result data associated with each historical patient. The one or more IOL parameters comprise one or more of an IOL type, an IOL power, or IOL placement information for implanting the IOL in the eye.

A staining composition is provided with improved staining intensity. The composition comprises a vital dye and hyaluronic acid, wherein the vital dye comprises Chicago Sky Blue and Trypan Blue. The staining composition is used to stain the lens capsule during cataract surgery and provides sufficient contrast such that no air bubble needs to be injected in the anterior chamber during cataract surgery.

Systems and methods for performing laser cataract surgery, for using a biometric system to determine a material property of a structure of the eye, laser pulses in a laser shot pattern having different powers. A therapeutic laser, and laser delivery system having the capability to vary the power of the laser beam.