49 results about "Ocular surgery" patented technology

A robotic system for performing an ocular surgery includes a robot and an electronic control unit (ECU). The robot includes an end-effector, six or more electric motors connected to or operable for moving six or more links and controllable via the ECU, and all-pose gravity compensation structure. A surgical tool is connected to the end-effector. The robot and surgical tool, in response to electronic control signals from the ECU, perform a surgical task on an eye during the ocular surgery. The ECU includes scaling logic operable for downscaling or limiting a tool force imparted to the eye by the surgical tool and / or a tool velocity of the surgical tool. All-pose gravity compensation minimizes a perceived weight of the surgical tool during the ocular surgery. The robotic system may include a surgeon-operated haptic device / master in which the robot acts as a slave device.

In certain embodiments, an ophthalmic surgical system for viewing an eye includes an ophthalmic microscope and a laser device. The ophthalmic microscope receives light reflected or scattered backwards from within the vitreous of the eye in order to provide an image of an object within the vitreous. The ophthalmic microscope includes a slit illumination source (which includes a light source and an optical element), a spectral filter, and oculars. The slit illumination source illuminates the eye with light, where the light source provides the light, and the optical element directs the light into the eye. The spectral filter filters out red spectral components of the light. The oculars receive the light from the eye in order to provide the image of the object. The laser device generates a laser beam to direct towards the object within the eye.

An ocular compression device with light directed through the sclera. The compression device may detachably house a lighting device that can be used to illuminate the eye area during ophthalmic surgery. Integrating the lighting device with the compression device during the procedure may reduce the number of hands required to perform the surgery. This may be particularly beneficial for ophthalmic surgery where the available surgical space is limited.

This invention discloses the application of low-concentration topical anesthetics in ophthalmic surgery, relating to the field of low-concentration topical anesthetic application technology, including the following specific application process: confirming the patient's basic surgical condition before administration; selecting anesthetic drugs and optimizing the administration concentration; performing administration according to the specific situation; real-time dynamic monitoring and adjustment of the administration dosage; gradually reducing the drug and transitioning to withdrawal. This invention improves drug safety and patient compliance while ensuring analgesic effects by optimizing anesthetic drug concentration and administration method. Furthermore, by using topical anesthetics at concentrations lower than conventional anesthetics for local administration after ophthalmic surgery, it can effectively relieve postoperative pain, discomfort, and foreign body sensation while significantly reducing toxic effects on corneal epithelial cells, reducing delayed corneal healing, dry eye, and corneal damage. It is effectively applicable to analgesia management after pterygium excision, refractive surgery, and other common ophthalmic surgeries, and has good clinical application value.

A system (10) and method (70) for quantifying light exposure of a patient's retina (25) during ophthalmic surgery. A light source (32) illuminates the patient's retina (25) with directional light (LL) during the surgery to produce an illuminated retina surface. A camera (36) collects image data (38) of the illuminated retina surface (25I). An electronic control unit, ECU (50), is in communication with the camera (36) and an indicator device (40), receives the image data (38), calculates a cumulative energy spectral density of the directional light (LL) incident on the retina (25), and performs a control action indicative of possible phototoxicity in response to the cumulative energy spectral density exceeding a phototoxicity threshold, the control action including enabling the indicator device (40). The illuminated retina surface (25I) can be divided into virtual zones (Z1, Z2), the ECU (50) mapping the cumulative energy spectral density to the illuminated retina surface (25I). Each of the optional zones (Z1, Z2) has a corresponding cumulative energy spectral density.

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.

An ocular surgery visualization system has an ophthalmoscopic loupe that images a portion located within a patient's eye in an intermediate image plane. An image processing routine separates a first portion of an image of a target region in the imaging plane from a second portion of the image of the target region, the first portion being captured by an image sensor and resulting from an imaging beam path through the ophthalmoscopic loupe, the second portion being captured by the image sensor and resulting from an imaging beam path extending beyond the ophthalmoscopic loupe and being complementary to the first portion, so as to transform the first portion of the image of the target region into a mirror first portion by a congruence corresponding to a rotation of the first portion around an axis of rotation perpendicular to the image plane or by a congruence corresponding to a point mirror, and so as to combine the rotated or point mirror first portion and the second portion to form a target region composite image that is provided to an image display device.

Embodiments of the present disclosure provide a surgical instrument having a pressure sensor coupled to or adjacent to a distal end of the surgical instrument to achieve a direct intraocular pressure (IOP) reading of an eye. The surgical instrument may include a handheld device that is inserted into the eye to perform a surgical task.

The utility model belongs to the field of manufacturing of auxiliary elements of microscopes, and particularly relates to a non-contact type fundus wide-angle observation mirror which comprises an inverted image and positive image switching device, a bottom plate, a space position mechanical adjusting mechanism and a wide-angle lens placer, and the inverted image and positive image switching device is arranged on the upper surface of the bottom plate. A wide-angle lens placer is arranged on the lower surface of the bottom plate through a spatial position mechanical adjusting mechanism, a light inlet area is reserved at a light inlet of the inverted image and positive image switching device on the bottom plate, the position under the light inlet area is within the travel range where the spatial position mechanical adjusting mechanism drives the wide-angle lens placer to move, and a mounting hole is formed in the bottom plate. According to the non-contact type fundus wide-angle observation mirror, the mode that the inverted image and positive image switching device is arranged to be matched with the space position mechanical adjusting mechanism and the wide-angle lens placer is adopted, the non-contact type fundus wide-angle observation mirror is designed, and the problem that holes do not need to be punched in eyeballs of a patient to fix the wide-angle observation mirror during an ophthalmologic operation is solved.

A control apparatus for an ophthalmic surgical system includes a receiver module which received a signal containing at least one geometric size of a pupil of an eye to be treated at least at a first time during a surgical procedure on the eye, at which fluid is supplied to and / or removed from the eye to be treated on the basis of set values of fluidic parameters of a fluidic apparatus. An evaluation unit allows the signal with the geometric sizes of the pupil to be compared to a geometric reference size of the pupil. An output module outputs an output signal of the evaluation unit, which contains information in respect of the geometric size of the pupil and / or information in respect of the above comparison to a control unit of the ophthalmic surgical system.

The invention relates to an ophthalmic surgical system (1) for treating an eye (2), and to a method. The ophthalmic surgical system (1) comprises a pressure sensor (12) which determines pressure information describing at least a pressure exerted by a treatment fluid on the pressure sensor (12) and, in the event of a handpiece (9) or infusion element at least partially inserted into the eye (2), a pressure exerted on the pressure sensor (12) by an intraocular pressure of the eye (2). A time curve (30) of the pressure information is determined and analysed to ascertain whether a pressure information increase (31) can be detected in which the pressure information increases in stages from a first pressure information (32) to a second pressure information (33), wherein a pressure information difference (34) between the two items of pressure information (32, 33) is greater than a specified minimum value (36). If the pressure information increase (31) has been detected, patient eye height information (38) and / or intraocular pressure information (37) is determined and provided by applying an evaluation algorithm (42) to the first pressure information (32) and / or the second pressure information (33).

To improve the precision of ophthalmic surgical procedures by reducing corneal wrinkling, a patient interface for an ophthalmic system can include an attachment portion, configured to attach the patient interface to a distal end of the ophthalmic system; a contact portion, configured to dock the patient interface to an eye; and a contact element, coupled to the contact portion, configured to contact a surface of a cornea of the eye as part of the docking of the patient interface to the eye, and having a central portion with a central radius of curvature Rc and a peripheral portion with a peripheral radius of curvature Rp, wherein Rc is smaller than Rp.

This invention relates to the field of materials science and technology, and discloses the application of zwitterionic polymer injectable hydrogels as vitreous substitutes. Zwitterionic monomers selected from CBUIA, CBUTA, CBOH, CBMA, or MPC are dissolved in an aqueous phase, and polymerization is initiated by an initiator to obtain a hydrogel. After swelling equilibrium, the zwitterionic polymer injectable hydrogel is obtained. This invention uses initiator-initiated free radical polymerization of monomers and prepares physically cross-linked pure zwitterionic hydrogels through multi-hydrogen bond interactions or chain entanglement. The pure zwitterionic hydrogel with injectable properties is prepared through swelling equilibrium. It exhibits good biocompatibility, which is beneficial for improving the affinity of this zwitterionic polymer-based hydrogel vitreous substitute to the vitreous cavity, reducing adverse reactions after implantation. Furthermore, the preparation method is simple and the conditions are mild, making it more suitable for large-scale promotion and use as a vitreous substitute in ocular surgery, and it exhibits excellent biofouling resistance.

An ophthalmic system for visualizing interaction between an ocular matter and a probe tip of a probe within or in contact with an ocular space of an eye includes a visualization tool having a field of view that encompasses at least a portion of the ocular space of the eye at an interface of the probe tip and the ocular matter, and a stroboscopic illumination source configured to stroboscopically illuminate the at least the portion of the field of view at an illumination frequency. A method for operating a stroboscopic illumination source during an ophthalmic procedure includes identifying an illumination source type of the stroboscopic illumination source, identifying a probe type, identifying a first procedure trigger, and operating the stroboscopic illumination source based on the probe type, the illumination source type, and the first procedure trigger.

Disclosed herein are methods, devices, and systems for monitoring fluid outflow behavior of an eye of a subject, for example, during ocular surgery. Changes to intraocular pressure can reflect fluid outflow behavior. Fluid outflow behavior can be a critical factor in the successful outcome of a surgery and determining likelihood of post-operative side effects. Large fluctuations in intraocular pressure, ocular hypertension, and hypotony can be associated with vision loss or poor ocular health.

The invention relates to an ophthalmic surgical handpiece (2) for treating a lens (31) of an eye (29), an ophthalmic surgical system (1), and a method. The handpiece (2) comprises a connecting piece (70) to which a needle (20) with a needle tip (21) is mounted and which is coupled to a vibration generation device (22); and the vibration generation device (22), which can excite the needle (20) to vibrate via the connecting piece (70). The handpiece (2) can be operated in a high-energy mode (42), in which the vibration components are excited at least by means of a first piezoelectric element (24), and in a low-energy mode (44), in which the vibration components are excited at least by means of a second piezoelectric element (23).Alternatively or additionally, the handpiece (2) can be operated in a pre-tensioning mode in which the first piezo element (24) and / or the second piezo element (23) is subjected to a pre-tension by controlling at least one piezo-based pre-tensioning device (35).

A robotic system for performing an ocular surgery includes a robot and an electronic control unit (ECU). The robot includes an end-effector, six or more electric motors connected to or operable for moving six or more links and controllable via the ECU, and all-pose gravity compensation structure. A surgical tool is connected to the end-effector. The robot and surgical tool, in response to electronic control signals from the ECU, perform a surgical task on an eye during the ocular surgery. The ECU includes scaling logic operable for downscaling or limiting a tool force imparted to the eye by the surgical tool and / or a tool velocity of the surgical tool. All-pose gravity compensation minimizes a perceived weight of the surgical tool during the ocular surgery. The robotic system may include a surgeon-operated haptic device / master in which the robot acts as a slave device.

An apparatus is presented for attaching a lens to a microscope with an optical attachment. The apparatus includes the lens with one or more translational degrees of freedom such that the lens is configured to translate along one or more directions relative to the microscope and / or one or more rotational degrees of freedom such that the lens is configured to rotate about one or more rotational axes relative to the microscope. A system is also presented that includes the apparatus and the optical attachment. The optical attachment includes a lens arm and / or the viewing attachment configured to move the lens and the lens arm relative to the microscope. A method is also presented for using an optical attachment to position a hands-free lens relative to a microscope.

An ophthalmic surgical system (100) includes an ophthalmic microscope (102) including a first camera (204a) and a second camera (204b). A controller (214) coupled to the first camera and the second camera receives a current pair of images including a current representations of a retina (300) of a patient; obtains a current three- dimensional representation of the retina from the current pair of images; determines deformation of the retina by evaluating the current three-dimensional representation relative to a reference representation of the retina; determines (414) stress on the retina according to the deformation; and outputs (418) guidance according to the stress. Stress may be determined using FEM and may use velocity and acceleration of the deformation. Guidance may include a graphical representation of the stress or a vector along which force should be exerted. Deformation may be detected (412) using a mesh (312) projected (406) onto the retina.

The invention relates to a double-arm trolley for an ophthalmologic operation robot, and belongs to the technical field of ophthalmologic operation robot equipment. Through a motor-gear-lead screw linear driving mode, micron-sized linear motion of the X axis, the Y axis and the Z axis is achieved; wherein the X axis adopts a common linear guide rail as a uniform coordinate reference of the two arms, so that the consistency of space positioning of the RCM mechanisms at the two ends is ensured. Meanwhile, each shaft is provided with a mechanical hard limit and a contact soft limit, and the operation safety is improved by utilizing the self-locking characteristic of lead screw transmission. The problems that in the prior art, space coordinates of the two arms are inconsistent, motion precision is insufficient, safety is poor, and the switching efficiency of the left eye and the right eye is low are solved.

A trocar assembly for use in ocular surgery, the trocar assembly having a blade configured to simultaneously receive a plurality of cannulas. The blade may include one or more stoppers for retaining any cannulas prior to placement of the cannulas. Containing multiple cannulas in this manner facilitates a new technique for ocular cannulation placement in which trocar assembly discarding is minimized and the efficiency associated with surgical tool replacement is improved.

The invention relates to an ophthalmic surgical handpiece (2) for treating a lens (31) of an eye (29), and to an ophthalmic surgical system (1). The handpiece (2) comprises a connecting piece (70) to which a needle (20) with a needle tip (21) is mounted and which is coupled to a vibration generation device (22); and the vibration generation device (22), which can excite the needle (20) to vibrate via the connecting piece (70). The handpiece (2) can be operated in a high-energy mode (42), in which the vibration components are excited at least by means of a first piezoelectric element (24), and in a low-energy mode (44), in which the vibration components are excited at least by means of a second piezoelectric element (23).Alternatively or additionally, the handpiece (2) can be operated in a pre-tensioning mode in which the first piezo element (24) and / or the second piezo element (23) is subjected to a pre-tension by controlling at least one piezo-based pre-tensioning device (35).

Ophthalmic surgical device for eye positioning and immobilization using traction suture or sutures, comprising: a base configured for securing to a periocular region comprising the inferior periocular area and frontotemporal area, said base having an adhesive surface for adhering to the periocular region; wherein the base comprises an anchoring element for adjustable fixation of the traction suture or sutures; the base has a support edge for supporting, externally to the eyelids, against at least a part of a speculum-supported eyelid or against at least a part of an eyelid-retracting speculum. The anchoring element may comprise a recess for the suture or sutures to pass through and for holding said suture or sutures. The anchoring element may comprise a rotatable fastener for fastening the suture or sutures. The rotatable fastener may be rotatably coupled to the anchoring element.

This utility model discloses a wide-angle illumination fiber optic cable for ophthalmic surgery, belonging to the field of illumination fiber optic technology. The wide-angle illumination fiber optic cable for ophthalmic surgery includes an optical cable, a connector, a handle, and a stainless steel needle tube. The front end of the optical cable is connected to the connector, and the rear end is connected to the handle and the stainless steel needle tube. The front end of the stainless steel needle tube is located inside the handle. The optical cable includes an optical fiber and a coating layer. The end of the optical fiber extends from the coating layer and the rear side of the handle, forming an insertion part. The insertion part is completely fitted inside the stainless steel needle tube, and the end of the insertion part radially contracts inward to form a frustum shape. The ophthalmic surgery illumination fiber optic cable of this application has a wide beam diffusion angle, while the output luminous flux is no different from that of traditional optical fibers. This effectively enhances the illumination range inside the eye during ophthalmic surgery, increases the surgical field of view, reduces the blind spot of diseased tissue, and improves the safety of the surgery.

The utility model belongs to the field of nose and face ventilation supports, and provides a disposable sterile nose and face ventilation support frame which comprises a face mask, ventilation holes are formed in the middle of the face mask, notches are formed in the two sides of the upper edge of the face mask, a silica gel strip is arranged on the upper edge of the face mask, and brackets are installed at the two ends of the face mask. A supporting piece is installed on the lower edge of the back face of the mask. The mask, the supporting piece and the air holes are arranged, the mask is provided with the notches, eyes of a patient are avoided when the mask is worn on the face of the patient, the mask is prevented from shielding an operation area during ophthalmologic operation, the air holes are one area, the patient can breathe through the air holes after wearing the mask, and water mist is prevented from being generated in the mask; the silica gel strip makes contact with the skin of a patient, and the supporting piece is used for being supported on the jaw of the patient, expanding the mask, preventing the mask from collapsing to cover the mouth and the nose, providing an airflow channel for the patient to breathe and preventing the patient from suffocating after being covered with the dressing.

A microsurgical device for ocular surgery comprising a distal portion having an introducer tube comprising an introducer lumen and a distal beveled end defining a distal opening from the introducer lumen, the distal beveled end configured for creating a penetration of the eye; and an interventional tool assembly sized to be received within the introducer lumen. The introducer tube is movable relative to the interventional tool assembly. The interventional tool assembly comprises an outer collar having a blunt distal edge defining a distal opening into the outer collar; and an interventional tool extending through the outer collar, the interventional tool comprising a distal end. The outer collar and / or the interventional tool are movable relative to one another to actuate the interventional tool. Related tools, systems, and methods are provided.

A lens holder for an ophthalmic procedure is provided. The lens holder includes: a rim configured to hold a lens; and a flange coupled to the rim, the flange including a first surface configured to be positioned on an ocular surface of an eye and an opposing second surface. The flange includes one or more conjunctiva capture features extending from the first surface to the second surface of the flange, and the one or more conjunctiva capture features are configured to be latched on to one or more portions of conjunctiva of the eye.

The application belongs to the technical field of laser control, and discloses an ultrafast laser scanning system suitable for ophthalmic surgery, which comprises a laser source, an optical path adjusting structure and an eyeball fixing structure, and the optical path adjusting structure comprises a scanner; the scanner comprises first to fourth optical wedge prisms arranged in sequence along a common axis, the direction of the common axis is the same as the direction of the central axis of incident light of the scanner, the first optical wedge prism and the second optical wedge prism are used for adjusting a scanning diameter, and the third optical wedge prism and the fourth optical wedge prism are used for adjusting a scanning track pattern; the two groups of optical wedge prisms are combined, and each optical wedge prism is adjusted, so that laser scanning can be quickly performed, the diameter of the scanning track and the scanning pattern can be flexibly adjusted, and the safety of the surgery is improved.