31 results about "Lens capsule" patented technology

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 utility model discloses an antenna positioning structure, an antenna structure and a double-lens capsule endoscope, and relates to the technical field of capsule endoscopes, and the antenna positioning structure comprises a positioning part which is arranged between two circuit boards and comprises an upper positioning part and a lower positioning part which are respectively clamped with a first circuit board and a second circuit board in a limiting manner, the upper positioning part and the lower positioning part are fixedly connected, and an arc-shaped bulge is arranged on one side, facing the upper positioning part, of the lower positioning part; the supporting part comprises a supporting ring, one end of the supporting ring abuts against the lower positioning part, the inner ring of the supporting ring further abuts against the arc-shaped outer side wall of the arc-shaped protrusion, the other end of the supporting ring extends towards the upper positioning part, and the antenna is arranged on the periphery of the supporting ring used for limiting the antenna in a sleeving mode. The risks of antenna deformation, displacement and the like after antenna assembly can be reduced, the stability of antenna signals is improved, and the capsule assembly difficulty is reduced.

The invention discloses a lens anterior-posterior capsule polisher, which is characterized in that a cleaning part is communicated with a pipeline part to form an integrated instrument. One part of the surface of the cleaning part is provided with a frosted part, and the other part of the surface is provided with a plurality of through holes. The frosted part can polish the anterior lens capsule by utilizing friction force, residual lens cortex and epithelial cells are removed, the postoperative lens capsular bag contraction probability is reduced, and the stability of the intraocular lens and the postoperative vision durability are enhanced. The through hole is matched with the pipeline part, and when the free end of the pipeline part is connected with intraocular perfusate, the perfusate can be sprayed through the through hole in multiple angles and multiple directions to wash and polish the posterior capsule. Compared with a bald needle head used in an existing water polishing technology, the polisher is wider and more uniform in flushing, operation safety can be effectively improved, postoperative vision and visual quality are improved, and the occurrence rate of posterior cataract is reduced. By means of the design, front and rear capsule membranes are polished through a single instrument, frequent instrument replacement in an operation is avoided, operation steps are simplified, and the operation effect and safety are improved.

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.

A system includes a controller with at least one processor and at least one non-transitory, tangible memory on which instructions are recorded for executing a method for obtaining a profile of a lens capsule of an eye. The profile is represented by respective central surfaces and respective equatorial surfaces separated at respective transition points. The controller is configured to obtain imaging data for a portion of the lens capsule visible through a pupil of the eye. The imaging data is transformed to an adjusted frame of reference and fitted to the respective central surfaces in a predefined central region of the lens capsule. The profile is obtained based on a set of fitting parameters for the respective central and equatorial surfaces. The respective central surfaces and respective equatorial surfaces may be represented as elliptical cones and skewed parabolas, respectively.

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.

Certain embodiments provide a method of performing ocular biometry. The method includes performing phacoemulsification to emulsify and remove an internal lens of an eye. The method further includes performing vitrectomy to remove vitreous from the eye. The method also includes placing a trial in a lens capsule of the eye. The method further includes performing biometry with a first biometry system to provide measurements including at least one of an axial length of the eye, a curvature of a cornea of the eye, and toric axis. The method also includes removing the trial from the lens capsule.

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 utility model discloses a built-in integrated mounting bracket for a capsule endoscopy and a double-lens capsule endoscopy comprising the built-in integrated mounting bracket for the capsule endoscopy, and the built-in integrated mounting bracket for the capsule endoscopy comprises a mounting shell, the mounting shell is of a hollow and vertically-through cylindrical thin shell structure, and a mounting notch penetrating through the axial direction is formed in the mounting shell; the mounting shell comprises a first mounting section, a first transition section, a second mounting section, a second transition section and a third mounting section which are sequentially connected from top to bottom; first notches are formed in the two circumferential ends of the first transition section; second notches are formed in the two circumferential ends of the second transition section; the outer side of the first mounting section is provided with an antenna mounting groove arranged along the circumferential direction; a limiting protrusion is arranged on the inner side of the top of the second installation section. According to the utility model, the integrated support can be used for effectively limiting the two camera modules, the battery, the antenna, the PCB and other devices in the capsule shell, and the structure is simple and stable; power supply is stable; signal transceiving stability; and the manufacturing and the assembling are convenient.

This invention relates to a dual-lens capsule endoscope lens, comprising two capsule endoscope lenses with different imaging functions: a lens with narrowband imaging characteristics and a high-definition ultra-wide-angle lens. The optical system of the first lens includes a first lens group, a first aperture, a second lens group, and a first protective glass. The first lens group includes a meniscus negative lens with negative optical power, a convex-concave negative lens with negative optical power, and a meniscus lens with positive optical power. The second lens group includes a biconvex lens with positive optical power and a biconcave lens with negative optical power. The optical system of the second lens includes a third lens group, a second aperture, a fourth lens group, and a second protective glass. The third lens group includes a convex-concave positive lens with positive optical power. The fourth lens group includes a cemented lens and a convex-concave lens with positive optical power. The cemented lens is formed by cementing a biconvex lens with positive optical power and a concave-convex lens with negative optical power, and also has positive optical power. This lens can expand the field of view coverage and improve detection accuracy.

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.

The invention discloses a postoperative lens capsular bag parameter prediction method, system, medium and equipment, and belongs to the field of biomedicines.The method comprises the steps that pre-operative anterior segment OCT images are obtained, and lens contour line parameters corresponding to multiple two-dimensional lens images with different axial angles in the anterior segment OCT images are extracted; according to each crystalline lens contour line parameter, constructing a crystalline lens three-dimensional model; performing three-dimensional Delaunay triangulation on the crystalline lens three-dimensional model to obtain each tetrahedral mesh; calculating the surface area of the crystalline lens three-dimensional model according to the area of the exposed triangular patch of each tetrahedral mesh; and taking half of the surface area as the posterior capsular membrane area of the postoperative crystalline lens, and calculating and outputting the simulated diameter of the capsular bag of the postoperative crystalline lens. Therefore, by implementing the method, the problem that the postoperative lens capsular bag diameter cannot be simply and effectively predicted and calculated in the prior art can be solved.

A method of manufacturing an accommodating intraocular lens including molding an optical component having at least a central portion formed of an optically clear silicone material; molding a second component, the second component comprising a silicone material; activating surfaces of the optical component and surfaces of the second component in a plasma chamber; and covalently bonding together without adhesive the optical component and the second component to form a lens capsule having an internal chamber.

An implantable artificial capsule and a method of implantation are provided. The implantable artificial capsule has a ring with a central opening to accommodate an intraocular lens and at least three haptic arms extending substantially orthogonal from the outer surface of the ring. Each arm has transcleral anchors for sutureless scleral fixation. Upon implantation of the implantable artificial capsule the arms are externalized trans-sclerally and atraumatically. The arms sit subconjunctivally. The implantable artificial capsule does not have any sutures for fixation and is suturelessly implanted in an eye, which is a major advantage as it significantly reduces complications during surgery and recovery.

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.

Embodiments herein generally relate to systems, methods, and devices including an artificial capsule device configured to be inserted into the lens capsule of an eye, the artificial capsule device comprising a housing structure including an anterior portion and a posterior portion, an internal cavity, a groove formed along the periphery of the internal cavity, and a drug delivery device having a ring or arc configuration, the drug delivery device being held in place within the groove within the internal cavity of the housing structure.

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.

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.

Methods and systems for planning and forming incisions in a cornea, lens capsule, and / or crystalline lens nucleus are disclosed. A method includes measuring spatial dispositions, relative to a laser surgery system, of at least portions of the corneal anterior and posterior surfaces. A spatial disposition of an incision of the cornea is generated based at least in part on the measured corneal anterior and posterior spatial dispositions and at least one corneal incision parameter. A composite image is displayed that includes an image representative of the measured corneal anterior and posterior surfaces and an image representing the corneal incision.

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.

Apparatus (100) for use with a motion source that generates reciprocating linear motion. The apparatus includes a cutting ring (120) comprising a sharp cutting edge shaped and sized to engage an anterior lens capsule of the eye (20) and a longitudinal-motion member (150) coupled to the cutting ring, and that is configured to be coupled to the motion source, such that the motion source imparts reciprocating linear motion to the longitudinal motion member. The apparatus additionally includes a motion-conversion mechanism coupled to the longitudinal-motion member and to the cutting ring and configured to convert the reciprocating linear motion of the longitudinal-motion member into back-and-forth rotational motion of the cutting ring to create a circular aperture in the anterior capsule of the eye by the cutting ring. Other applications are also described.

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.

A surgical device and procedure are provided for performing microsurgery, including a capsulotomy of a lens capsule of an eye. The device has an elastically deformable cutting element mounted within an elastomeric suction cup. The suction cup is attached to an arm for manipulating the device. The device can be inserted into the anterior chamber of the eye, through a corneal incision, to cut a piece from the anterior portion of the lens capsule of the eye. The device is secured against the lens capsule using suction applied by one or more suction elements. The device is then removed from the eye, with the cut piece of membrane retained within the device by suction.

An accommodating intraocular lens (AIOL) can include an accommodating lens structure having an accommodating optical power. The AIOL can include a secondary structure removably connected to the accommodating lens. In some embodiments, the accommodating lens structure is configured to adjust the accommodating optical power in response to radial forces from the capsule of a patient. The secondary structure can be a sensor assembly, a powered lens and / or a light-adjustable lens. In some embodiments, the accommodating lens structure comprises an outer fluid reservoir and a fluid accommodating lens in fluid communication with the outer fluid reservoir. The outer fluid reservoir can be configured to transfer fluid into the fluid accommodating lens in reaction to compressive forces on the outer fluid reservoir.