14 results about "Capsulorhexis" patented technology

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 invention discloses a force sensing and tactile feedback integrated intelligent capsulorhexis system, and relates to the technical field of force sensing and tactile feedback. The system comprises a force sensing module, a central control module, a tactile feedback module, a position control module and a capsulorhexis operation module. Multi-dimensional contact force signals of the end effector and the lens capsule are collected in real time, the central control module generates force feedback and position adjusting instructions accordingly, the tactile feedback module converts the force signals into perceptible tactile feedback, and the position control module cooperatively regulates and controls the instrument position and applied force to adjust the position of the lens capsule. Finally, the operation action is completed by the capsulorhexis operation module, so that the environmental adaptability of the force sensing and tactile feedback integrated intelligent capsulorhexis is improved; the problem that due to insufficient inherent sampling frequency and lack of intelligent self-adaptive capacity, the environment adaptability of force sensing and tactile feedback integrated intelligent capsulorhexis is low exists.

The invention provides an electric capsulorhexis knife for a cataract capsulorhexis operation and an operation method of the electric capsulorhexis knife, and relates to the field of cataract capsulorhexis. The device comprises a handle, the using end of the handle is fixedly connected with a connecting rod; the other end of the connecting rod is fixedly connected with an extending rod; a rotating device is arranged on the surface of the lower side of the extending rod and located at the end; a cutting device is arranged at the end of the rotating device and located on the lower side surface of the stretching-in rod. The inner side wall of the handle is slidably connected with a clamping device; and a control button is arranged on the inner side surface of the handle. Through the arrangement of a clamping device, a clamping block and a silica gel cover, the clamping of the clamping block is controlled by the clamping device, so that the torn front capsule film is conveniently taken out, the efficiency of taking out the front capsule film is improved, and the radius length of the torn film is adjusted through the arrangement of a rotating rod, an adjusting device and a cutting device in a rotating device; meanwhile, the cutting depth of the anterior capsular membrane is adjusted to prevent the internal posterior capsular membrane from being damaged.

Described herein are devices and methods for creating a capsulorhexis. In some embodiments, the device includes a template with a tearing profile, which, when placed against the capsular bag, defines a perimeter of a capsulorhexis. In some embodiments, the device further includes rigid sections and bendable sections which are configured to transition the template between a first bent configuration for insertion through a corneal incision and a second unbent configuration for creation of the capsulorhexis. In some embodiments, the device further includes connecting elements which enter through the corneal incision and, when manipulated, transition the device between the first bent configuration and the second unbent configuration. In some embodiments, the connectors are configured to impart a downward force on the template and thus the capsular bag during the capsulorhexis creation.

This invention relates to the field of capsulorhexis technology and discloses a cataract capsulorhexis device, comprising a capsulorhexis forceps body and handles fixedly installed on both sides of the forceps body. The clamping end of the forceps body is provided with two forceps tips. A positioning rod is fixedly installed on one inner wall of the forceps body, and positioning openings are provided on the other inner wall of the forceps body and the handles. A positioning component is provided at the end of the positioning rod away from the forceps body. This invention allows for flexible selection of forceps tips at different angles according to the progress of the surgery, the condition of the operated eye, and the holding habits of medical staff. Installation is simple and quick. During capsulorhexis, the locking component and the positioning component work together to stably lock the forceps tips in a closed state, eliminating the need for continuous force exertion by medical staff, effectively reducing hand burden and avoiding hand soreness and stiffness. Unlocking requires only a light press of the locking component, making operation simple, saving surgical time, avoiding disruption to the surgical rhythm, and ensuring precise surgical execution.

A surgical instrument includes a tube and a horn. The tube has a distal end and a proximal end. A loop is formed with a cable that is folded between a first end of the cable and a second end of the cable. The cable is at least partially disposed in the tube. The horn is configured to oscillate. The first end of the cable is coupled to the horn. An oscillation of the horn actuates the cable.

The application relates to the technical field of ophthalmic microsurgery, and discloses an ophthalmic surgery capsule membrane incision system and method. Liquid light-sensitive conductive precursors are injected to the surface of the anterior lens capsule to conformally spread, a composite surgical probe is used to project a structured light spot, and the light-irradiated area is in-situ cross-linked and solidified into a hydrogel electrode ring; a multi-contact microelectrode array establishes physical contact with the hydrogel electrode ring, contact conformal impedance topology mapping is carried out, and a spatial impedance topology map is obtained; the system calculates and generates a spatial energy distribution matrix of multi-channel cutting energy according to the topology map, and finally releases transient high-frequency radio frequency pulses to the hydrogel electrode ring through the multi-contact microelectrode array to cut the anterior lens capsule. The application eliminates solid physical gaps by using material rheological characteristics, combines spatial differential energy distribution based on impedance feedback, and realizes uniform cutting without thermodynamic tearing.

FIELD: medicine; ophthalmology.SUBSTANCE: after performing phacoemulsification, linear incisions are made in the anterior capsule from the edge of the capsulorhexis to the vault of the capsular bag in opposite meridians, forming a 1 mm wide flap. Next, the flap is removed and pinched in the previously formed coloboma of the iris. In a particular case, if necessary, the flap is additionally pinched in the paracentesis, after which the paracentesis is sutured.EFFECT: reliable fixation, a sufficient level of tension and anatomically correct position of the IOL, and preventing its rotation, ensuring the absence of refractive shift.2 cl, 10 dwg, 2 ex

Provided herein are devices for repairing the natural lens capsule after cataract surgery. The devices use a substantially annular rigid and flexible assembly to contact the posterior and anterior surfaces of the capsule after cataract surgery to repair the capsule shape. Also provided are devices for tensioning the capsule after cataract surgery. An elastic annular body is shaped to secure the edges of a capsulorhexis in a clamp-like configuration. Alternatively, similar to the rigid and flexible assembly of the capsule repair device, the elastic annular body is formed with a lower assembly depending from the body and a flexible annular body extending from the lower assembly.

The invention discloses a method for manufacturing a hyperelastic nitinol ring. The method includes compressing the nitinol wire on the first side and the second side to form a permanent flat edge, and cutting off a portion of the nitinol wire on the third side and the fourth side to form a flat edge. The method comprises: manufacturing a modified nitinol wire having a rectangular cross-section formed by flat edges on the four sides; the improved nitinol wire is bent into a ring shape, so that the first end of the improved nitinol wire is aligned with the second end of the improved nitinol wire; and permanently coupling the first end to the second end to form a nitinol ring. The nitinol ring is coupled to an capsulotomy device such that the nitinol ring, upon receiving an electrical current from the capsulotomy device, generates heat sufficient to cut tissue in contact with the nitinol ring.

The present invention relates to a single and / or dual laser delivery system attached to an existing ophthalmic operating microscope, comprising of a single and / or dual wavelength laser unit [1]; and a delivery system [5]. The laser unit [1] comprises of a green laser module 532 nm [3] and a yellow laser module 577 nm [4] along with an aiming beam [7] 635 nm. The delivery system comprises of a right-angle prism [5A]: X and Y Galvo assembly [5B] and a focusing lens assembly [5C]. The laser unit passes through a fiber optic cable [6] gets reflected using the right angle prism, gets deflected by the Galvo assembly, enters the focusing lens assembly and gets reflected by a folding mirror [5D] and focused on human eye capsule. The system converges and focuses the laser wavelengths in line with the aiming beam to create a circular pattern to accomplish a pre-measured Capsulorhexis.

The invention discloses a refractive cataract ultrasonic emulsification auxiliary guiding mechanism and a using method, the mechanism comprises a main control and calculation unit, and an optical imaging and projection unit, a stereoscopic vision positioning unit, a display unit and a fixation guiding unit which are connected with the main control and calculation unit, and the mechanism projects structured light and performs binocular stereoscopic vision reconstruction; real-time three-dimensional space positioning and tracking of instruments and eye tissues are achieved, virtual navigation paths of incisions and capsulorhexis are displayed in an operation field in an overlapping mode, and an operation auxiliary system including planning and guiding is formed; the invention constructs a set of real-time three-dimensional surgical navigation system in the operation, and the system can convert a preoperative planned refractive target into a visible and traceable three-dimensional space path in the operation, so that manual operation depending on the experience of an operator is converted into a data-guided process; therefore, the operation accuracy of the steps of cornea incision position and configuration, continuous annular capsulorhexis diameter and neutral and the like is greatly improved.

The invention belongs to the technical field of capsulorhexis surgery, and relates to a cataract continuous annular capsulorhexis surgery practice model which comprises a box shell, a supporting ejection assembly and a lifting adjusting assembly. The electric push rod is matched with the supporting and ejecting assembly to move the bearing plate to the front of the box shell from the interior of the box shell, then linkage can be carried out to push the protection plate to move to the position below an amplification probe below the bearing plate, and the effect of protecting the amplification probe and the operation magnifying lens is achieved; the lead screws on the two sides rotate through the chain wheels and the chains, the lead screws are connected to the thread matching rods through threads in a meshed mode so that the installation blocks and the third sliding rails can be driven to ascend and descend vertically, and the third sliding rails are installed on the second sliding blocks so that the magnification probe can be driven to move to the position above the practice eye model; the upper end of the third sliding rail is fixedly connected with a bearing plate, so that the bearing plate can be driven to lift up and down for adjustment.

The invention relates to a pair of bipolar electrocoagulation forceps for pupil forming iris suture. The bipolar electrocoagulation forceps comprise a toothed electrocoagulation platform, capsulorhexis forceps arms and bipolar electrocoagulation metal rods, the toothed electrocoagulation platform comprises a conductive tooth part and an insulating wrapping block, the conductive tooth part is wrapped by the insulating wrapping block, and the tooth tip part of the conductive tooth part is exposed only towards the single side in the clamping contact direction; each capsulorhexis forceps arm is provided with a conductive inner core and an insulating outer layer; the far end of the conductive inner core is connected and conducted with the conductive tooth part, and the near end of the conductive inner core is connected with the bipolar electrocoagulation metal rod; the capsulorhexis forceps arms are of slender rod structures of which the outer diameters are smaller than those of the insulating wrapping blocks; the bipolar electrocoagulation metal rod is of a thick rod structure with the outer diameter larger than that of the insulating wrapping block, and a thick insulating layer is arranged outside the bipolar electrocoagulation metal rod. The pair of electrocoagulation tweezers and the pair of capsulorhexis tweezers are combined, the head of the pair of capsulorhexis tweezers is connected and conducted with the tooth-shaped part, the whole tooth-shaped part is wrapped by the insulating layer, and the tooth part is exposed to the outside only on one side, so that the accuracy of the pair of electrocoagulation tweezers is improved, and the influence on surrounding tissues is avoided.