13 results about "Lens capsule" patented technology

A method for assessing a lens capsule stability condition in an eye of a human patient includes simultaneously directing electromagnetic energy in a predetermined spectrum via an energy source onto a pupil of the eye after movement of the eye results in eye saccades occurring therein. The method further includes acquiring images of the eye indicative of the eye saccades using an image capture device and calculating a motion profile of the lens capsule using the images via an ECU. Additionally, the method includes extracting time-normalized lens capsule oscillation trajectories based on the motion profile via the ECU and then model fitting the lens capsule oscillation trajectories via the ECU, thereby assessing the lens capsule instability condition. Also disclosed herein is an automated system for performing an embodiment of the method, the automated system including an energy source, an image capture device, and an ECU.

The application discloses an ultrasonic emulsification perfusion assembly, which comprises a metal connector, a plastic needle tube arranged in the metal connector, a metal perfusion sleeve provided with a water inlet and a perfusion port, and a plastic clamping perfusion sleeve which is sleeved outside the metal perfusion sleeve and forms a liquid storage space, wherein the water inlet is arranged in the liquid storage space. The application has the following beneficial effects: the slender needle head of the plastic needle tube can improve the stability of the anterior chamber and reduce the probability of surge occurrence; the relatively soft plastic needle head tip can also reduce the probability of puncturing the lens capsule; the metal perfusion sleeve effectively separates the ultrasonic emulsification needle tube body from the extrusion of the incision, greatly reduces or even eliminates the incision burn caused by ultrasonic friction; the relatively hard metal perfusion sleeve effectively prevents the perfusion liquid from being reduced or blocked due to the extrusion or distortion of the incision, thereby improving the stability of the anterior chamber and reducing the probability of surge occurrence.

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 utility model discloses a double-lens capsule endoscope and a double-lens capsule endoscope shell, and relates to the technical field of capsule endoscopes. The double-lens capsule endoscope shell comprises a barrel-shaped main shell with openings in the two ends, and an axial limiting protrusion is arranged at only one end of the inner circumferential face of the main shell in the axial direction so as to axially limit a capsule core installed in the main shell from the other end in the axial direction. When the capsule core is applied to the double-lens capsule endoscope, the capsule core enters from the end, not provided with the axial limiting protrusion, of the main shell till the capsule core axially moves to abut against the axial limiting protrusion. At the moment, the main shell can axially position the capsule core in the assembling process based on the structure of the main shell, the capsule core is prevented from being separated from the end, provided with the axial limiting protrusion, of the main shell, the assembling difficulty of the capsule endoscopy can be lowered, and therefore the production efficiency is improved.

The application discloses a light treatment equipment for after-cataract, and belongs to the technical field of medical devices. The light treatment equipment adjusts the emission direction of treatment light by using a light guide module to make the treatment light project to an intraocular target area. The light shaping module is used to shape the emission spot of the treatment light to match the annular anatomical structure of the equatorial part of the lens capsule bag. During the cataract intraocular lens implantation surgery, the light treatment equipment emits treatment light to precisely irradiate the intraocular target area, thereby inducing the apoptosis of epithelial cells in the anterior subcapsular area and the equatorial area of the lens in the intraocular target area. The light treatment equipment does not cause damage to the surrounding tissue structure, can greatly reduce complications, and can effectively prevent and effectively and precisely treat after-cataract.

The invention discloses a conformal antenna system for a double-lens capsule type endoscope and the double-lens capsule type endoscope comprising the conformal antenna system. The conformal antenna system for the double-lens capsule type endoscope comprises two lenses arranged at the two ends in a shell and lens supports corresponding to the two lenses respectively, and further comprises a conductive radiator, and the lens supports are made of non-metal materials. And the conductive radiator is integrated on the surface or inside the lens bracket of one or two lenses and forms a conformal structure with the lens bracket. According to the invention, the antenna and the lens bracket are designed in an integrated and conformal manner, so that the problem that the installation space of the capsule type endoscope is deficient is fundamentally solved, and metal interference in the capsule type endoscope is effectively isolated, thereby realizing high radiation efficiency and stable remote wireless communication.

A surgical device and procedure are provided for smoothly and easily accessing tissue to perform microsurgery, including a capsulotomy of a lens capsule of an eye. The device includes a handpiece with a tip for insertion into an incision in the cornea of the eye. A sliding element is disposed within the handpiece and a suction cup is mounted to the sliding element. The sliding element can be translated to move the suction cup into and out of the handpiece. A compression mechanism associated with the suction cup and the handpiece compresses the suction cup for deployment through the tip of the handpiece. The suction cup can expand inside the anterior chamber into a cutting position on the lens capsule. A cutting element mounted to the suction cup is used to cut a portion of the lens capsule and to remove the portion from the eye. The cutting element may be mounted to a cutting element support structure in a way that prevents heating of the device.

A phacoemulsification system includes a phacoemulsification probe and one or more signal generators. The phacoemulsification probe includes (i) a piezoelectric actuator, (ii) a segmented electrode, including multiple electrode segments attached to respective angular sections of a face of the piezoelectric actuator, (iii) a common ground electrode attached to the piezoelectric actuator, and (iv) a needle configured to be inserted into a lens capsule of an eye and to be vibrated by the piezoelectric actuator. The one or more signal generators are configured to vibrate the piezoelectric actuator by applying multiple drive signals between the multiple respective electrode segments and the common ground electrode.

Devices to be implanted in a lens capsule of a human eye and securely hold an intraocular lens (IOL), and operable to rotate the IOL about an optical axis of the IOL are described. The devices may comprise at least one remotely controllable unit being controlled with energy from outside the body, after implanting the device, to change a distance between two ends of the remotely controllable unit, to cause either a clockwise or a counterclockwise rotation of the attached IOL about its optical axis. Additionally or alternatively, some of the disclosed devices enable a displacement of the IOL along its optical axis.

A phacoemulsification device includes a phacoemulsification probe and a processor. The phacoemulsification probe includes a piezoelectric crystal configured to vibrate in response to a drive signal, a needle configured to be inserted into a lens capsule of an eye and to be vibrated by the piezoelectric crystal, and a set of magnetic-field components. The set includes (i) one or more magnetic-field generators configured to generate a magnetic field, and (ii) one or more magnetic-field sensors configured to sense the magnetic field. At least one of the magnetic-field components is coupled to vibrate with the needle and at least one other of the magnetic-field components is isolated from vibration of the needle, thereby causing the magnetic-field sensors to output signals indicative of the vibration. The processor is configured to adaptively adjust a frequency of the drive signal so as to vibrate the needle at a resonant frequency of the piezoelectric crystal.

A capsulorhexis device is inserted into an incision site of a cornea to make an incision in an anterior capsule surrounding a crystalline lens. The capsulorhexis device includes a loop having elasticity and conductivity; a moving member having one end fixed and coupled to the loop; an insertion guide configured so that, while the incision is being made in the crystalline lens capsule, a front end thereof is inserted into the incision site of the cornea; and a housing having one end coupled to a rear end of the insertion guide, wherein the loop is housed in the housing and, to make the incision in the crystalline lens capsule, slides in the housing together with the moving member to pass through the insertion guide and be deployed into an anterior chamber of the eye.

A lens device for treatment of an eye having a lens capsule with an internal chamber bound, in part, by a dynamic anterior optic and having a perimeter region. A deformable region having a three-dimensional bellows shape defining a volume projects radially outward from the perimeter region of the lens capsule and has an outer membrane segment configured to bend around a hinge relative to an inner membrane segment. A volume of an optical liquid is contained within the internal chamber and the volume of the deformable region. A force translation arm extends radially outward from the deformable region. Upon implantation of the lens device, the force translation arm directly contacts ciliary tissue to harness ciliary body movements that compresses and reduces the volume of the deformable region displacing optical liquid contained within the volume of the deformable region towards the internal chamber.

The invention discloses a pair of dynamic out-of-focus myopia prevention and control intelligent glasses, which is characterized in that the eye using distance is monitored in real time through a distance sensing module integrated on a glasses frame, a control module performs analysis and decision, and when continuous short-distance eye using is detected, a micro-fluidic execution module is controlled to pump an aqueous humor simulation liquid into an environment capsule body around lenses, so that the myopia is prevented and controlled. The peripheral area of the lens is deformed to generate a myopia out-of-focus optical effect light spot, so that the growth of an eye axis is inhibited; and when long-distance eye use is detected, the liquid is pumped back, so that the lenses are restored to the original shape, and the definition of hyperopia is ensured. According to the invention, silent, non-inductive, dynamic and intelligent adjustment of the defocusing amount is realized through a microfluidic technology, the interference problem of fixed defocusing glasses and the complexity problem of mechanical zoom glasses are effectively solved, and excellent myopia prevention and control effects and seamless user experience are achieved.