40 results about "Intraocular surgery" patented technology

A vitreous removing apparatus for intraocular surgery comprising an outer tube and an inner tube concentric with the outer tube. The outer tube includes a tubular body and a tubular cutting-zone section. The tubular body has a larger internal diameter than an internal diameter of the cutting-zone section. The inner tube has an inner body and a distal cutting end. The inner body has an outer diameter which is essentially equal to an outer diameter of the distal cutting end. A method for performing intraocular surgery comprising reciprocating a distal cutting end of an inner tubular body within a tubular cutting-zone section of an outer tubular body.

The present invention relates to compositions of microspheres suitable for application to ocular injuries and inflammation, and to methods of use of the compositions alone or in combination with other agents in the prevention and treatment of ocular injuries and inflammation. The compositions, which increase the rate of healing, can be used to treat injuries and inflammation, including but not limited to those caused by foreign bodies, infections, burns, lesions, lacerations, ischemia, injuries from blunt trauma, traumatic hyphema, sympathetic ophthalmia, injuries from radiant energy, cataracts, corneal erosions or optic nerve injuries, and in procedures such as post-trabeculectomy (filtering surgery), post pterygium surgery; post ocular adnexa trauma and surgery, post intraocular surgery, post vitrectomy, post retinal detachment or post retinotomylectomy.

A cannula for intraocular surgery including a cup, a tube including a wall and having a tube outer diameter, the tube extending from the cup to a distal end and defining a longitudinal axis. In one implementation, the distal end includes a first portion and a second portion, the first portion having a tip and being narrower than the second portion. A gripping section is formed in the wall. The gripping section has a diameter that is less than the tube outer diameter. The gripping section allows the sclera to deform into the reduced diameter in order to increase a retention force of the cannula in the eye while minimizing damage to the tissue of the eye.

A delivery system is disclosed which can be used to deliver an ocular implant into a target location within the eye via an ab interno procedure. In some embodiments, the implant can provide fluid communication between the anterior chamber and the suprachoroidal or supraciliary space while in an implanted state. The delivery system can include a proximal handle component and a distal delivery component. In addition, the proximal handle component can include an actuator to control the release of the implant from the delivery component into the target location in the eye.

The present invention relates to a decompression-compensating instrument for use in intraocular surgery, wherein a perfusate is supplied to an affected part of an eye via a supply channel at a predetermined pressure, and the perfusate is aspirated via an aspiration channel together with the affected tissues that are to be removed, the decompression-compensating instrument supplying the perfusate into the affected part when the internal pressure of the affected part is excessively lowered, and being constructed so as to be connectable to a point midway along the supply channel and comprising a storage-member that forms a chamber that is closable except for an opening from which the perfusate to be supplied to the supply channel flows, the capacity of the storage member being 7 cm³ to 22 cm³.

The present invention relates to a retinal flattener, which is a medical device for retina reattachment in modern vitreoretinal surgery. The retinal flattener designed in the present invention generally contains a slender rod and a working tip at the forehead of the rod. The working tip consists of a base and a soft pressing element on the base. The special structures of the retinal flattener in the invention are designed according to the special requirement of the intraocular surgery. The form and the structure of the working tip facilitate operators to insert it into eyes from any of the two superior incisions in the modern standard three incisions vitreoretinal surgery. The soft pressing element applied in the working tip is used for retina-flatting operation such as rubdown and touch.

Microscope, especially stereoscopic microscope, with a main objective (2), a magnification system (8, 7) disposed thereafter, and a supplementary optical system (30, 32a) for carrying out intraocular surgery, wherein the supplementary optical system comprises at least one ophthalmoscopic lens (30a) disposed before the main objective lens (2) and at least one optical component (32a) disposed behind the main objective lens (2) for providing a refraction and a focussing of a viewing beam path passing through the main objective (2), and the optical axis (12d) of the magnification system (7) disposed behind the main objective extending essentially perpendicularly to the optical axis (11) of the main objective (2).

The invention discloses an intraocular surgery robot constrained motion control method suitable for motion control of a surgery robot end effector used for constraining eyeball internal space constraint and sclera sleeve pose constraint; the method comprises a virtual remote motion center control step: controlling the end of the end effector to fix in certain point, controlling the end effector to rotate around certain straight line of the point, and allowing the end effector to axially fall on one conical surface after increment motions. The constrained motion control method can control motions of the robot end effector according to doctor input (rocking bar and man-machine interaction interface), so the end effector can reach an assigned location in the eyeball in an assigned attitude, thus solving the apparatus motion control problems under eyeball constraint, and allowing robot auxiliary intraocular surgery to step forward to clinic practices.

The invention relates to phenylephrine ketorolac solution and a preparation method, and provides intraocular operation washing concentrated solution without a preservative, an antioxidant and a buffer system. The phenylephrine ketorolac solution is capable of preventing the intraoperative miosis and relieving the postoperation pain, and avoiding the side effects caused by the preservative, the antioxidant and the buffer system.

An instrument capable of providing large-area shielding within an isolated operating region, such as the eye, while being passable through a small incision in the region through which the instrument must be inserted. For example, an instrument capable of being passed through a typical 3 mm (or smaller) phacoemulsification incision without undue damage to ocular tissue, and which expands to provide large-area shielding, e.g. to occlude a large-diameter (e.g. approx. 6 mm) posterior capsule opening. The surgical instrument includes two or more leaves, the leaves being interconnected by at least one fastener in a manner that causes expansion of a leading or distal portion of the instrument when the following or proximal portions of each leaf are manipulated, whether by a user or through interaction with a wall of the incision.

The invention relates to a double-ring iris expander for an intraocular surgery. The double-ring iris expander consists of an upper ring, a lower ring and an elastic macromolecule film which is connected with the upper ring and the lower ring, wherein the diameter of the upper ring is smaller than that of the lower ring; a plurality of annular small ears which are distributed in an equal distanceare arranged on the inner side of the macromolecule film which is connected with the upper ring and the lower ring; the upper ring and the lower ring can be folded to be placed in the same plane; a groove of which the concave surface faces the center of a ring is formed through the plane and the elastic macromolecule film; and the diameter difference between the upper ring and the lower ring can enable the upper ring to be embedded in the lower ring. According to the double-ring iris expander disclosed by the invention, under the situation that a conventional cataract surgery incision is not increased or extended, a pupil of a patient suffering from a cataract surgery or a vitreous body surgery can be sufficiently, quickly, softly and minimally invasively extended, the surgery field can besufficiently exposed, the possibility of accidentally sucking and accidentally injuring the iris is reduced, the surgery time is shortened, postoperative reactions and complications are alleviated, and prognosis of the patient subjected to the cataract surgery and the patient subjected to the vitreous body surgery is improved.

The invention relates to the technical field of surgical instruments, in particular to a master manipulator of a master-slave intraocular surgical robot. The master manipulator comprises a first joint mechanism, a second joint mechanism and a tail end operating part; the first joint mechanism comprises a box body and a supporting plate; the box body is rotationally connected with the supporting plate, and the box body is configured to rotate around a first axis relative to the supporting plate; the second joint mechanism is installed on the box body, the second joint mechanism comprises a linear feeding assembly, and the linear feeding assembly is configured to rotate around a second axis relative to the box body; the tail end operation part is configured to do linear motion in the first direction limited by the linear feeding assembly, the tail end operation part is further configured to rotate around a third axis, the third axis is parallel to the axial direction of the tail end operation part, and the first axis, the second axis and the third axis are perpendicular to one another. The main manipulator comprises the first joint mechanism, the second joint mechanism and the tail end operation part, the structure is relatively compact, and the overall occupied space can be reduced.

The present invention relates to a hydrogen molecule-containing prophylactic or therapeutic agent for oxidative damage for use in intraocular surgery, which is intended to provide a prophylactic or therapeutic agent for oxidative damage, which is administered when phacoemulsification cataract surgery is performed.

The invention discloses a vitreous cut lens ring providing fundus illumination and an application method thereof, the lens ring comprises a ring body, a lens slot and a wireless energy feeding circuit, the ring body is a hollow hemispherical surface, and the curvature radius of the hollow hemispherical surface is in line with an eyeball; the lens slot is arranged at the top center of the convex side of the ring body. The wireless energy feeding circuit comprises a receiving coil and light emitting elements; the receiving coil is arranged on the inner wall side of the concave side of the ring body; the light-emitting elements are distributed in a ring at the specified position of the ring body, and the specified position corresponds to the inner cornea of a human body; the receiving coil iselectrically connected with the light emitting elements. The lens ring can be used for intraocular surgery, and is fixed directly in front of an eye and is powered by wireless energy feeding. According to the invention, a light source does not need to be inserted into the eyeball or close to the outer wall of the eyeball, so as to avoid secondary injury to the patient and reduce the operation complexity.

The present invention is an intraocular surgery system using a Venturi pump and capable of preventing clogging due to nucleus fragments, despite a reduced aspiration flow rate. The intraocular surgery system includes: an air pumping means (21); a Venturi tube (22) to which air is supplied from the air pumping means; a drainage tank (28) that is connected to a narrowed part of the Venturi tube; an intraocular surgery device (1) configured to fragment a nucleus inside an eye using ultrasonic vibrations, and discharge the nucleus together with a perfusate; a first aspiration tube (31) through which the perfusate discharged from the intraocular surgery device passes; a separation device (4) to which the first aspiration tube is connected, and that is configured to separate the nucleus from the perfusate that has flown from the first aspiration tube; and a second aspiration tube (32) that has an inner diameter that is smaller than an inner diameter of the first aspiration tube, and is configured to supply the drainage tank with the perfusate discharged from the separation device.

One end of an intraocular tweezers core penetrates through an intraocular tweezers cylinder and is connected with a tactile force sensitization structure, the tactile force sensitization structure is arranged on a tray, and an FBG (fiber bragg grating) sensor group is arranged at the position, close to the intraocular tweezers cylinder, of the intraocular tweezers core and used for detecting transverse force of the tweezers cylinder; the intraocular tweezers barrel is connected with a pin shaft through a tweezers barrel bearing fixing ring, one end of the pin shaft is connected with the front bracket, and the other end of the pin shaft penetrates through the tweezers barrel bearing fixing ring and a linear bearing to be connected with a self-rotating gear on the tray; the intraocular tweezers cylinders are connected with a linear driving module arranged on the tray through arc-shaped connecting pieces and used for achieving tweezers core axial force detection. The method is good in decoupling performance and real-time performance, accords with an intraocular surgery operation mechanism, makes up for tactile micro-force perception lacking when a surgery robot is used for surgery, achieves perception of intraocular tactile micro-force, and lays a foundation for further development and utilization of subsequent ophthalmic surgery robots.

An anterior chamber perfusate for intraocular surgery and its use. The anterior chamber perfusate not only balances intraocular pressure, but also contains a certain amount of L-alanyl-L-glutamine (Ala-Gln).