85 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 the technical field of surgical robots, and particularly to an RCM mechanism and a corresponding surgical robot that can be used in cataract surgery, including: a first active support rod, the first end of which is slidably arranged on a guide rail; a second active support rod, which includes a telescopic part and a support rod part, the second end of the telescopic part is hinged to a first base, and the first end of the telescopic part is connected to the support rod part; a first driven support rod, the second end of which is connected to the first active support rod through a sliding part, and the first end of the support rod part is hinged to the first driven support rod; a second driven support rod parallel to the first driven support rod, the second end of which is hinged to the second end of the support rod part; a driven member parallel to the support rod part, the first end of which is hinged to the first end of the first driven support rod, and the second end of which is hinged to the first end of the second driven support rod. The surgical robot provided by the present invention can achieve the accuracy and safety of the surgery, and perform cataract and other ophthalmic surgeries more quickly and non-invasively.

The utility model discloses a capsulorhexis marker for cataract surgery, relates to the technical field of surgical instruments, solves the problems that an existing device is low in operation stability and low in operation accuracy, and adopts the following scheme that an electric telescopic rod A is fixedly installed on the top face of a base. Through the arrangement of an electric telescopic rod A, an air cylinder and an electric telescopic rod B, the electric telescopic rod A and the air cylinder can drive an outer ring sleeve to move up and down, so that the outer ring sleeve is aligned with the edge of the cornea, then the electric telescopic rod B drives an inner ring to move downwards, a little pressure is applied to the cornea, and through mechanical operation, the stability and safety are improved; meanwhile, through the arrangement of a display screen, a super-definition camera and an illuminating lamp, when the outer ring sleeve and the inner ring are in contact with the cornea, the illuminating lamp illuminates the eyes, the super-definition camera transmits images of the eyes to the display screen to be displayed, observation of medical staff is facilitated, and the operation precision is improved.

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 present invention relates to the field of medical device technology, specifically a capsular scissors for cataract surgery, comprising a first rod, a second rod, a first blade, a second blade, a connecting assembly, a first elastic sheet, a second elastic sheet, a rotating assembly and a telescopic assembly. The present invention changes the force angle during operation by cooperating with the connecting assembly and the rotating assembly, reducing the corneal incision required to be opened, so as to facilitate subsequent patient recovery, prevent conventional capsular scissors from opening and closing and causing the corneal incision to increase, and prevent the problem that the size and position of the capsular incision are difficult to control with capsulotomy forceps. The capsular membrane can be cut more accurately, and the size can be controlled, and the cutting edge is smooth, so as to facilitate subsequent patient recovery and surgical operations. The telescopic assembly and the elastic sheet ensure operability when reducing the shearing angle, thereby improving the accuracy of the surgery, preventing damage to the intraocular tissue during the surgery, and improving the safety and effectiveness of the surgery.

The invention discloses an expandable vitreous cavity crystal shedding blocking device for cataract surgery, relates to the technical field of cataract surgery auxiliary instruments, and provides the following scheme that the expandable vitreous cavity crystal shedding blocking device comprises a blocking net injection mechanism, and the front end of the blocking net injection mechanism is connected with a crystalline lens blocking net; and the barrier net injection mechanism comprises an outer sleeve. A spiral transmission structure of the screwing pipe and the outer sleeve is combined with a linkage mechanism of the transmission rod and the traction block, control over the crystalline lens blocking net by the medical steel wire is achieved, the medical-grade polycarbonate oval outer ring and the medical-grade polycarbonate oval inner ring can be unfolded or folded according to needs, a stable bearing concave face can be formed in an operation to prevent a crystalline lens from falling off, and the use effect of the medical-grade polycarbonate oval outer ring and the medical-grade polycarbonate oval inner ring is improved. In addition, numerical value marks of the observation opening provide visual screwing depth reference for doctors, and the postoperative infection risk is reduced by combining tight sealing of liquid in the eyes through the sealing ring.

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.

The present application discloses a method for forming a stable anterior capsule simulation structure and a method for cataract surgery simulation training, relating to the medical field. The method comprises the following steps: filling a simulated space with a viscoelastic agent; the simulated space being the space enclosed by a simulated cornea, a simulated iris, and a simulated anterior capsule; injecting an air bubble into the viscoelastic agent; the front surface of the air bubble contacts the inner surface of the simulated cornea, and the rear surface of the air bubble contacts the simulated anterior capsule; the simulated anterior capsule includes a contact area in contact with the air bubble and a non-contact area not in contact with the air bubble, the non-contact area tending to bulge forward, and the curvature of the contact area is smaller than that of the non-contact area. The method for forming a stable anterior capsule simulation structure and the method for cataract surgery simulation training provided herein are used to guide teaching or simulation training, and can reduce tension in the simulated anterior capsule and prevent rupture of the simulated anterior capsule.

The utility model relates to a capsular bag drag hook for cataract surgery, which comprises a drag hook, the drag hook comprises a first pull rod, a second pull rod integrally connected to one end of the first pull rod, a transition part integrally connected to the end, away from the first pull rod, of the second pull rod, and a third pull rod integrally connected to the end, away from the second pull rod, of the transition part. The sliding sleeve is arranged on the first pull rod in a sliding and sleeving manner; and the protection unit is arranged at one end, far away from the transition part, of the third pull rod. Compared with a traditional suture fixing method, the capsular bag structure for the cataract surgery has the advantages that the complexity of the surgery is greatly reduced, a user only needs to hook the capsular bag through the drag hooks and pull the capsular bag to a proper position, then the circular ring on the rear portion is moved to abut against the sclera edge, suture is not needed in the process, operation is simpler, more convenient and safer, and the capsular bag structure is matched with CTR for use, so that the operation cost is reduced. Transverse and longitudinal tension can be provided for the capsular bag of the dislocated crystalline lens, so that the positions of the capsular bag and the IOL are kept stable and can be maintained for a long time.

The invention discloses a cataract surgery auxiliary dilator which comprises a fixing plate, distraction assemblies and a controller, the number of the distraction assemblies is two, and the controller is used for controlling the two distraction assemblies to be opened at the same time. According to the auxiliary spreader for the cataract surgery, through the ingenious structural design, accurate spreading and control over eyelids are achieved, and a powerful auxiliary tool is provided for the cataract surgery. The distraction device is simple and convenient to operate, stable and reliable, can effectively reduce oppression and discomfort to eyes of a patient, and improves accuracy and comfort of an operation.

The present invention relates to the field of computer-assisted surgery systems, specifically a method and system for locating the corneal center during cataract surgery based on deep learning. The method comprises: acquiring cataract surgery video data in real time using a video camera; converting the video data into continuous image frames and preprocessing them into an image sequence; constructing a corneal Gaussian heat map generation network based on a deep learning model; inputting the preprocessed image sequence into the corneal Gaussian heat map generation network to obtain a corneal heat map and a center position offset map; and decoding the corneal Gaussian heat map to obtain its peak position and the coordinates of the corneal center. The present invention can accurately and quickly locate the corneal center during cataract surgery.

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 present invention relates to a prosthetic capsular bag and method for inserting the same. The prosthetic capsular bag helps to maintain the volume of the natural capsular bag, thereby stabilizing the effective lens position of an IOL so that refractive outcomes may be improved with cataract surgery. The prosthetic capsular bag further provides an integrated refractive surface, providing a means for experimentally determining an effective lens position prior to inserting an IOL.