17 results about "Ocular operation" patented technology

The present disclosure relates to a method for stabilizing the pH of an aqueous composition comprising a drug which is prone to oxidation, said method comprising the addition of an additive to prevent oxidation of the drug which is prone to oxidation. In particular, the present disclosure relates to a method for stabilizing the pH of an aqueous composition comprising a corticosteroid, said method comprising the addition of an additive to prevent oxidation of the corticosteroid. The present disclosure also relates to a composition comprising a corticosteroid and an additive to prevent oxidation of the corticosteroid.

This invention provides a video matching method for uncertainty-aware navigation in ophthalmic surgery, comprising: performing anatomical structure segmentation and neighboring frame fusion matching based on ophthalmic surgical video sequences to obtain a highly reliable neighboring frame matching library; performing motion analysis and frame pair selection and pairing based on a full-frame anatomical segmentation mask to obtain a globally selected set of difficult sample frame pairs; constructing a spatial lookup table to generate a pseudo-label training dataset; performing uncertainty-guided contrastive learning to obtain a final uncertainty-aware matching network; calculating the final filtered rotation angle using a reference frame and the current frame; and updating the incision position, capsulorhexis range, and intraocular lens implantation axis to obtain a real-time superimposed navigation visualization result. This invention can significantly reduce the algorithm training cost, enhance robustness in complex surgical environments, solve occlusion and deformation interference, effectively suppress error accumulation in semi-supervised learning, and improve the absolute accuracy of matching.

The application relates to the technical field of ophthalmic material preparation, and particularly discloses a kind of biopolymer membranes, a preparation method thereof and application in ophthalmic surgery.The biopolymer membrane comprises the following raw material components by weight: polyvinyl alcohol 5-10 parts;gelatin 3-6 parts;sodium lignosulfonate 10-20 parts;carboxymethyl cellulose 3-6 parts;natural extract 1-3 parts;water 200-300 parts.Studies have shown that the biopolymer membrane can promote the proliferation of human corneal epithelial cells;therefore, it has important application value when used in ophthalmic surgery for the treatment of ocular surface damage.

1. The name of the design product: ultrasonic emulsification instrument for ophthalmology. 2. The use of the design product: used in ophthalmic operating room, the operation equipment for cataract lens core fragmentation, perfusion and suction and anterior segment vitrectomy and electrocoagulation. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view 1.

In certain embodiments, a system includes a first robotic arm and a controller. The first robotic arm includes a first end effector and a second end effector. The first end effector is configured to hold and manipulate a surgical package containing an item. The second end effector includes a sensor configured to transmit sensor data. The controller is coupled to the first end effector and the second end effector, and is configured to control the first end effector to present the surgical package to the sensor of the second end effector, command the second end effector to acquire the sensor data, determine, based on the sensor data, a type of item within the surgical package.

Devices, methods, and systems related to a telemanipulation device with near, at, and trans-RCM motion for intraocular robotic surgical systems are provided. For example, there is a surgical tool telemanipulator device, including: a gripper adapted for user-controlled motion at, near, or through a remote center of motion (RCM) in a telemanipulator workspace; a plurality of rotational joints coupled to the gripper, each of the rotational joints having a motor, a cable, and an encoder; and at least one axial joint coupled to the gripper, the at least one axial joint having a motor, a cable, and an encoder. The plurality of rotational joints and the at least one axial joint may be arranged to provide encoded outputs related to (mimicking) a movement of the gripper at, near, or through the RCM within the telemanipulator workspace. Other related embodiments are disclosed.

In certain embodiments, a system includes a first robotic arm and a controller. The first robotic arm includes a first end effector and a second end effector. The first end effector is configured to hold and manipulate a surgical package containing an item. The second end effector includes a sensor configured to transmit sensor data. The controller is coupled to the first end effector and the second end effector, and is configured to control the first end effector to present the surgical package to the sensor of the second end effector, command the second end effector to acquire the sensor data, determine, based on the sensor data, a type of item within the surgical package.

The present disclosure generally relates to microsurgical instruments having variable stiffness such as microsurgical instruments having variable stiffness for ophthalmic surgical procedures. In one embodiment, a surgical instrument includes a probe and a stiffener assembly. The stiffener assembly further includes a stiffener formed of a hollow tubular member substantially surrounding at least a portion of a length of the probe. Actuation of the stiffener along the length of the probe adjusts the stiffness of the probe, thus providing a user better control of the surgical instrument.

A laser source for an ophthalmic surgical system includes a femtosecond seeder, an amplifier, a femtosecond pulse portion, a nanosecond pulse portion, and one or more switches. The femtosecond seeder generates femtosecond pulses. The amplifier amplifies laser pulses, which include the femtosecond pulses and nanosecond pulses. The amplifier amplifies the laser pulses by amplifying the femtosecond pulses and generating and amplifying the nanosecond pulses. The femtosecond pulse portion alters and outputs the femtosecond pulses, and the nanosecond pulse portion alters and outputs the nanosecond pulses. The switches receive the laser pulses from the amplifier, and direct the laser pulses to the femtosecond pulse portion or the nanosecond pulse portion. In other embodiments, the laser source includes a femtosecond seeder and a nanosecond seeder that generates the nanosecond pulses.

A laser source for an ophthalmic surgical system includes a femtosecond seeder, an amplifier, a femtosecond pulse portion, a nanosecond pulse portion, and one or more switches. The femtosecond seeder generates femtosecond pulses. The amplifier amplifies laser pulses, which include the femtosecond pulses and nanosecond pulses. The amplifier amplifies the laser pulses by amplifying the femtosecond pulses and generating and amplifying the nanosecond pulses. The femtosecond pulse portion alters and outputs the femtosecond pulses, and the nanosecond pulse portion alters and outputs the nanosecond pulses. The switches receive the laser pulses from the amplifier, and direct the laser pulses to the femtosecond pulse portion or the nanosecond pulse portion. In other embodiments, the laser source includes a femtosecond seeder and a nanosecond seeder that generates the nanosecond pulses.

The invention relates to a bipolar electrocoagulation device for ophthalmology, which belongs to the technical field of medical instruments and comprises a machine body, the machine body is connected with bipolar electrocoagulation forceps through a connecting wire, a water spraying assembly is arranged on a forceps body of the bipolar electrocoagulation forceps, and normal saline is sprayed to forceps heads through the water spraying assembly to realize cooling; a supporting arm is arranged on the machine body, a sliding strip of the supporting arm is connected with a holding ball through a pull rope, and the pull rope can bear the gravity of the arm when the holding ball is held; a cleaning mechanism is arranged on one side of the supporting arm, a rotatable scraping plate and a fixed scraping block are arranged in a cleaning box of the cleaning mechanism, the scraping plate is attached to the outer wall of the tweezers head, and the scraping block cleans the inner side of the tweezers head when the tweezers head is taken out. Precise cooling of the tweezers head is achieved through the water spraying assembly, and tissue thermal damage is avoided; the cleaning mechanism can quickly clean the inner and outer sides of the forceps heads to reduce the operation interruption time; the supporting structure effectively relieves operation fatigue of doctors, safety, efficiency and operation comfort of the ophthalmologic operation are integrally improved, and the ophthalmologic operation support is suitable for various fine ophthalmologic operation scenes.

The invention relates to a pedal control method, system and device for ophthalmologic surgery and a medium, and belongs to the technical field of ophthalmologic surgery operation.The pedal control method comprises the steps that the identity of a doctor using a pedal is recognized, and preset preference parameters are loaded according to the identity of the doctor; reading real-time data of the operating microscope host; according to the real-time data, identifying a to-be-switched operation mode, and calculating the emergency degree of the to-be-switched operation mode in combination with the preference parameters; according to the preference parameters, the operation mode to be switched is distributed to a pedal habitual area; according to the emergency degree, the main control area of the pedal habitual area is calculated, a shape memory alloy unit of the main control area is controlled to protrude so as to protrude the operation mode operation area to be switched, and other operation mode areas are controlled to be distributed according to the remaining area in an equal proportion mode. The method has the advantages that a doctor can accurately operate the pedal, and time waste and misoperation caused by searching for an operation area are reduced.

Integrated system, attachable to a surgical microscope using magnets, capable of interpreting voice commands and processing images and videos in real time, to then execute functions on surgical instruments, such as optical and peripheral equipment usable in general surgery or, in particular, in ophthalmological surgeries, such as anterior and posterior segment, ocular plastics, orbit, oncological and other surgeries is provided. The system automates the task of the surgeon and assistants when variations are needed during surgery, such as: visualization variations in focus (autofocus) or field adjustment systems (autofield), or performance of the surgical equipment, such as digital interventions in the foot and / or touch controls, interventions in existing knobs and / or levers for lighting control, and the like. The system includes magnetic quick couplings, sensor parts such as microphone, microprocessing center for image and video processing, and actuating parts such as stepper motors, direct current motors with gearboxes, servomotors.

The application discloses a kind of ophthalmic surgery simulation training devices combined with virtual reality technology including operating platform and head-mounted display, the operating platform is simultaneously connected with support mechanism and virtual instrument simulation mechanism, and simulation sensing mechanism is arranged on support mechanism;Virtual instrument simulation mechanism includes first handle and second handle, and first handle and second handle are hinged to each other, one end of first handle is connected with first tool bit, and the same end of second handle is connected with second tool bit, first tool bit and second tool bit are mutually clamped, and the center position of first tool bit and second tool bit is respectively provided with first VR positioner, the bottom end outer wall of second tool bit is simultaneously fixedly connected with hook head and electric telescopic rod, and the output end of electric telescopic rod is connected with second VR positioner;The ophthalmic surgery simulation training device combined with virtual reality technology disclosed in the application has certain deformation diversity, can simulate a variety of instrument forms, and further optimizes the effect of simulation reality degree.

The application provides a kind of optic disc real-time continuous tracking method and device, it is related to medical image processing technical field.The application obtains the video sequence of ophthalmic surgery and pre-processes, then the video sequence after pre-processing is carried out multi-scale feature extraction and optic disc target detection, obtains optic disc detection target;The optic disc detection target is based on Kalman filtering prediction and appearance feature matching, introduces adaptive gate matching mechanism to carry out interframe target trajectory association, and combines appearance feature cache update mechanism and ReID cosine similarity retrieval to maintain target trajectory, outputs trajectory tracking result;Wherein, the trajectory tracking result includes optic disc position, confidence, trajectory identification and continuous tracking result of time stamp.The application improves small scale optic disc detection precision, enhances the occlusion recovery and trajectory continuity, in strong light reflection, low contrast and local occlusion and other complex surgical scene, realizes high-precision, high robustness, real-time optic disc continuous tracking.

Devices and methods for intraocular fluid injection are disclosed. A device can include a surgical instrument for an ophthalmic procedure. The surgical instrument can include a handle. A fluid compartment can be coupled to the handle and configured to hold a substance. A tool can be coupled to the distal end of the handle and have a lumen configured to convey the substance into an intraocular site of a patient. A piston can be in the handle and configured to reciprocate along the longitudinal axis of the handle to draw the substance from the fluid compartment and eject the substance through the lumen of the tool. A push button can be on the lateral side of the housing and configured to engage the piston via a sloped surface to actuate a forward stroke of the piston towards the distal end of the handle.