8 results about "Aqueous humor outflow" patented technology

The application discloses a teaching simulative human eyeball aqueous humor circulation model in the technical field of eyeball aqueous humor circulation models, which comprises a model box, an eyeball model assembly arranged in the model box, a functional body arranged at the top of the model box and a pump assembly arranged in the functional body. The eyeball model assembly comprises an eyeball wall, an eyeball and an optic nerve, and the eyeball wall is provided with a cornea at the front end. An iris is arranged on the side of the cornea close to the eyeball, the space between the cornea and the iris is an anterior chamber, the included angle between the cornea and the iris is an anterior chamber angle, the center of the iris is provided with a pupil, the iris is provided with a lens on the side close to the eyeball, the lens is provided with a zonular ligament around the lens, and the other end of the zonular ligament is fixedly connected with a ciliary body. The space between the iris and the lens constitutes a posterior chamber. The application has the advantages of simple structure, simulation of the process that the aqueous humor is retained in the eye to press the optic nerve when the anterior chamber angle is closed or the aqueous humor outflow passage is blocked, and convenience for medical students to understand the process that the optic nerve is pressed by the increased intraocular pressure when the aqueous humor passage is blocked.

An aqueous humor outflow device comprises an arcuate scaffold that extends continuously in a circumferential direction from a first end to a second end of the aqueous humor outflow device and has a cross-sectional area that allows the arcuate scaffold to fit within a conventional aqueous humor outflow pathway of a mammalian eye. The arcuate scaffold comprises a docking station or a port within which to retain an implant device, such as a drug eluting device or a drug delivery device.

A method for treating advanced primary angle closure glaucoma (PACG) includes steps of: S1, utilizing surgical peripheral iridectomy (SPI) to eliminate pupillary block; S2, utilizing goinosynchialysis (GSL) to separate peripheral anterior synechia (PAS) in the anterior chamber angle with the assistance of a gonioscope and a chopper; and S3, utilizing goniotomy (GT) to incise a dysfunctional trabecular meshwork and a Schlemm canal, so as to remove a dysfunctional trabecular meshwork, enhance outflow of aqueous humor, and reduce intraocular pressure.

Disclosed herein are devices, systems, and methods configured to safely regulate aqueous outflow in a patient's eye while dynamically maintaining the normal range of intraocular pressure. An exemplary membrane implant includes a plurality of topographical features implemented on first and second surfaces of the implant. The topographical features include an interconnected channel network configured to direct aqueous in the patient's eye to flow through and across the surfaces of the membrane implant to reduce intraocular pressure. A plurality of control structures are implemented on one or more selected locations of the first and second surfaces to regulate the aqueous in the patient's eye.

The disclosure relates to ophthalmic implants, specifically a flexible, self-expanding spacer device deployable in subconjunctival, sub-Tenon's, or suprachoroidal spaces to manage intraocular fluids. The device addresses limitations of fixed-resistance drainage and fibrosis-related failure in glaucoma surgery by maintaining a controlled three-dimensional reservoir (bleb space) for aqueous humor outflow while minimizing tissue trauma. In one aspect, a shape-memory body transitions from a compressed, delivery-compatible state to an expanded configuration defining a convex internal volume, optionally with collapse-resistant reinforcements and tissue-engaging elements for atraumatic stabilization. Preferred embodiments include anterior relief geometry to avoid corneal contact and posterior flow-directing features to promote posterior bleb formation and uniform pressure control. A delivery member with a reduced-profile, tapered piercing tip and optional bent shaft enables minimally invasive ab externo implantation and controlled, coaxial deployment. Advantages include streamlined single-step delivery, stable long-term bleb architecture, reduced hypotony and fibrotic encapsulation, and compatibility with trabeculectomy and shunt-based outflow.

The present application provides a kind of outflow facility of aqueous humor non-invasive monitoring scleral mirror device, monitoring method and system, it is related to ophthalmic medical monitoring equipment technical field, solve the problems of strong invasiveness, cannot continuous monitoring, insufficient precision and poor data synchronism of the existing technology in aqueous humor outflow coefficient measurement method;Wherein the scleral mirror device includes: scleral mirror, scleral mirror includes center area, edge landing area and the transition zone connecting center area and edge landing area, edge landing area is used to contact the sclera of user and provide support to transition zone and center area;Phased array transducer matrix, phased array transducer matrix includes multiple ring-shaped distribution in transition zone transducer;Dynamic deflection control module, dynamic deflection control module is set in transition zone, and is electrically connected with each transducer, to control the excitation time delay of each transducer;Intraocular pressure monitoring module, intraocular pressure monitoring module is set in center area;Signal processing module, signal processing module is set in transition zone.

The disclosure relates to ophthalmic implants, specifically a flexible, self-expanding spacer device deployable in subconjunctival, sub-Tenon's, or suprachoroidal spaces to manage intraocular fluids. The device addresses limitations of fixed-resistance drainage and fibrosis-related failure in glaucoma surgery by maintaining a controlled three-dimensional reservoir (bleb space) for aqueous humor outflow while minimizing tissue trauma. In one aspect, a shape-memory body transitions from a compressed, delivery-compatible state to an expanded configuration defining a convex internal volume, optionally with collapse-resistant reinforcements and tissue-engaging elements for atraumatic stabilization. Preferred embodiments include anterior relief geometry to avoid corneal contact and posterior flow-directing features to promote posterior bleb formation and uniform pressure control. A delivery member with a reduced-profile, tapered piercing tip and optional bent shaft enables minimally invasive ab externo implantation and controlled, coaxial deployment. Advantages include streamlined single-step delivery, stable long-term bleb architecture, reduced hypotony and fibrotic encapsulation, and compatibility with trabeculectomy and shunt-based outflow.

The invention provides an intraocular pressure regulation and control system based on an ultrasonic technology, a positioning module is deployed on the outer side of a target human eyelid and used for positioning a pupil center point of a human eyeball in a first posture, and a measurement module is deployed on the outer side of the target human eyelid and used for measuring the real-time resonant frequency of the human eyeball in the first posture. The ultrasonic module is deployed on the outer side of a target human eyelid, a plurality of array elements of the ultrasonic module are arranged opposite to a human eye trabecular meshwork tissue coverage area, and the ultrasonic module is used for applying ultrasonic energy matched with the human eyeball real-time intraocular pressure parameter to the human eye trabecular meshwork tissue, so that a human eye aqueous humor outflow channel is dredged, and the human eye intraocular pressure parameter is calculated in real time. And human intraocular pressure parameters are adjusted. According to the invention, the intraocular pressure regulation and control system is not in direct contact with the human eyeball tissue, the intraocular pressure parameter is indirectly measured and obtained through the vibration frequency of the human eyeball, and the function of accurately and individually regulating the intraocular pressure of the human body is met by applying ultrasonic energy to the human eye trabecular meshwork tissue.