11 results about "Ocular surgery" patented technology

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 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.

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.

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.

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).

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 present invention relates to a sterile ophthalmic composition comprising castor oil and medium-chain triglycerides; to the use of said composition in medicine, in particular for the treatment and / or prevention of an ocular disease selected from the group consisting of dry eye, conjunctivitis, dermatitis, blepharitis, entropion, lax eye lid syndrome, thyroid eye disease, pterygium, conjunctival laxity, epithelial damage caused by preservatives, epithelial or anterior chamber damage caused by ocular surgery, corneal limbal cell deficiency, corneal ulceration caused by physical or chemical agents, keratitis, sub-scleritis and uveitis.

An ophthalmic surgical instrument for incising fibrous tissue in the eye, the ophthalmic surgical instrument including: a shaft having a longitudinal axis; and an incising portion projecting in a direction away from a longitudinal direction of the shaft, in which the shaft includes: a shaft front surface located on a side of a projection direction of the incising portion; and a shaft rear surface located on the opposite side from the projection direction, in which the incising portion includes: a tip having a minimum thickness to which a thickness of the incising portion in a longitudinal direction of the shaft is minimized toward the projection direction; a top surface being a connecting surface between the tip and the shaft front surface; and a bottom surface being a connecting surface between the tip and the shaft rear surface.

This utility model discloses a simulated eyeball for ophthalmic surgical demonstrations, comprising a spherical shell formed by splicing two hemispherical shells. The spherical shell includes a scleral simulated shell, an uveal simulated shell, and a retinal simulated shell. At designated locations inside the front end of the spherical shell are simulated structures for the iris, ciliary processes, lens, and suspensory ligaments. The circular hole in the center of the iris simulated structure serves as a simulated pupil. Through its unique three-layer shell design, from the outer scleral simulated shell to the inner uveal and retinal simulated shells, the simulated eyeball accurately reproduces the complex hierarchical structure of the human eye. In particular, the simulated structures within the eyeball, such as the iris, ciliary processes, lens, suspensory ligaments, and pupil, allow trainees to intuitively familiarize themselves with the key internal structures of the eyeball during demonstrations, providing accurate references for surgical procedures and significantly improving the demonstration effect.

The application relates to the field of gas injection devices for medical surgical instruments, in particular to an eye surgery gas injection device. In order to solve the problems that the gas injection amount and speed are difficult to control in the hand injection mode, and the hand tremor directly brings the syringe, so that the needle shakes in the deep layer of the corneal stroma. The following scheme is adopted: a gas injection device outer box; a needle tube fixed on the gas injection device outer box; a piston arranged in the needle tube; a lead screw fixed on the piston, which converts the rotary motion into linear motion; a driving mechanism installed on the gas injection device outer box; a nut in screw transmission with the lead screw, and the rotary motion of the driving mechanism is transmitted to the lead screw, and the piston in the needle tube is uniformly translated. The design effectively solves the problems of limited small bubbles caused by insufficient gas injection amount, and backflow overflow caused by improper gas injection speed in manual gas injection, and can stably maintain the corneal internal pressure.