45 results about "Photocoagulations" patented technology

A system and method for delivering therapeutic laser energy onto selected treatment locations of the retina following a predetermined spatial distribution pattern using one single laser beam. A beam steering mechanism and control system delivers the laser energy sequentially to treatment locations forming a pre-selected treatment layout pattern. The invention allows time consuming therapeutic laser procedures such as pan-retinal photo-coagulation and segmental photocoagulation to be performed with increased accuracy and in a fraction of the time currently required for such procedures.

An ophthalmic treatment system and method for performing therapy on target tissue in a patient's eye. A delivery system delivers treatment light to the patient's eye and a camera captures a live image of the patient's eye. Control electronics control the delivery system, register a pre-treatment image of the patient's eye to the camera's live image (where the pre-treatment image includes a treatment template that identifies target tissue within the patient's eye), and verify whether or not the delivery system is aligned to the target tissue defined by the treatment template. The control electronics control the delivery system to project the treatment light onto the patient's eye in response to both an activation of a trigger device and the verification that the delivery system is aligned to the target tissue, as well as adjust delivery system alignment to track eye movement.

Systems, devices, and methods for treating a glaucomatous eye are provided. An amount of pulsed laser energy is delivered to the pars plana of the eye by a hand-holdable device which comprises a hand-holdable elongate member and a contact member disposed on an end of the elongate member. A contact surface of the contact member is placed in direct contact with the eye so that a reference edge of the contact member aligns with the limbus and a treatment axis defined by the elongate member is angularly offset from the optical axis of the eye. The amount of pulsed laser energy delivered is insufficient to effect therapeutic photocoagulation but is sufficient to increase uveoscleral outflow so as to maintain a reduction from pre-laser treatment intraocular pressure. Amounts of pulsed laser energy will be transmitted to a circumferential series of tissue regions of the eye.

The present inventors focused on the fact that inflammation at the subretinal macular area enhances choroidal neovascularization, and developed pharmaceutical agents that suppress initiation or advancement of neovascularization by angiogenic factors such as VEGF. More specifically, the present inventors revealed that administering anti-IL-6 receptor monoclonal antibodies to mice treated with laser photocoagulation inhibits the development of choroidal neovascularization.

The present invention provides devices and methods for applying radiation to the retina of a patient. In one embodiment, an apparatus includes a radiation source for generating a radiation beam suitable for absorption by retinal pigment epithelial cells. One or more optical components are included to direct the beam onto the retina. A scanner is optically coupled to the radiation source to control movement of the beam in two dimensions to allow a scan over the retina. A controller applies control signals to the scanner to adjust beam movement to illuminate a plurality of retinal locations in a temporal sequence according to a predefined pattern. The device can be operated in one mode to effect selective targeting of retinal pigment epithelial cells, or in another mode to effect thermal photocoagulation of the retina.

The invention relates to the use of photodynamic therapy (PDT) to treat macular edemas, including DME, CRVO and BRVO. It provides an alternative to photocoagulation and the disadvantages associated therewith.

A laser system that includes a diode pump source. A frequency doubled solid state visible laser is pumped by the diode pump source and produces a pulsed laser output with a train of pulses. Resources provide instructions for the creation of the pulsed output, with on and off times that provide for substantial confinement of thermal effects at a target site. This laser system results in tissue specific photoactivation (or TSP) without photocoagulation damage to any of the adjacent tissues and without causing full thickness retinal damage and the associated vision loss.

A surgical probe includes a cannula assembly, having a graded index (GRIN) fiber that is configured to receive a multi-spot light beam at a proximal end and to emit the multi-spot light beam at a distal end ; an adapter, having a distal end, configured to receive the cannula assembly, with the proximal end of the GRIN fiber, a proximal end, configured to couple to a light guide via a connector and to receive a light delivered by the light guide from a laser source to the adapter, and an interface, configured to couple the light delivered by the light guide to the proximal end of the GRIN fiber; wherein a length of the GRIN fiber is sufficiently long that the interface is outside a patient's eye during a photocoagulation procedure.

The invention belongs to the technical field of insulating paint, in particular relates to an insulating paint belonging to the dual-curing field of ultraviolet curing and thermocuring. The invention is applied for motor insulation processing and has the advantages of long storage life, high curing speed, no smell, being convenient in operation, no volatilization of organic matters during curing and the like. Compared with the common dipping paint technology, the dipping technology overcomes the problems of loss and small sagging amount in the baking and solidifying process of the dipping paint; in addition, the dipping technology saves material, improves product quality and lightens environment pollution. The dipping and insulating paint has good thermostability and is suitable for common or vacuum pressure dipping paint for H and C-grade motor and electrical appliances.

A surgical system includes a surgical laser source operable to emit a surgical laser beam and an OCT engine operable to emit an OCT beam. The surgical system also includes an endoprobe optically coupled to the surgical laser source and the OCT engine. The endoprobe includes an OCT fiber for transmitting the OCT beam, a surgical laser fiber for transmitting the surgical laser beam, and scanning optics optically coupled to the OCT fiber and the surgical laser fiber, the scanning optics configured to simultaneously scan both the OCT beam and the surgical laser beam. The surgical system further includes a processor programmed to control the scanning optics to scan the OCT beam and the surgical laser beam over a targeted tissue area and to detect an OCT signal from the targeted tissue area.

A device for photocoagulation of a retina includes a radiation source and an optical application system including a representation device configured to depict regions of the retina with sub-threshold coagulation. In addition a method for photocoagulation of the retina is provided.

An ophthalmoscope having a laser device for laser irradiation of an eye, in particular for performing a photocoagulation on fundus of the eye of the eye, includes an illuminator for illuminating the eye as well as a camera for acquiring an image of the eye. The illuminator is adapted to generate visible and infrared lights. The ophthalmoscope further includes a control unit adapted to trigger the illuminator for generating a light pulse of visible light and to read out from the camera a control image of the eye acquired by the camera during the light pulse. The ophthalmoscope is configurable to acquire an image of an eye and perform a laser treatment of an eye.

A system and method are presented for treating branches of the superior hemorrhoidal artery by photocoagulation using laser energy. The inflamed dilated blood vessels in and around the anal region, often called hemorrhoids or piles, are caused due to a connective tissue disorder, a relative increase in pressure in the superior hemorrhoidal artery and a weakening of the vessels' valves. A suitable treatment system and a method are given for treating such conditions in a minimally invasive manner. The treatment system photocoagulates the branches of a superior hemorrhoidal artery in the anal and rectal regions using laser energy while causing minimal pain or discomfort to the patient. The system is provided with a transparent operational window. The distal end of the fiber and Doppler system channel are at the operational window. The system also includes a viewing window. The post operative recovery is faster than alternative approaches with no complications. In contrast to most other successful methods of the prior art, general anesthesia is no longer required, thereby significantly reducing complications and simplifying treatment.

A device intended to permit photocoagulation or phototherapy at low cost and in a shorter time. For this purpose, an ophthalmology appliance includes a radiation source having several discrete individual emitters. The therapy beam path leading from the radiation source to the treatment area projects an image of at least respective portions of different individual emitters simultaneously onto surfaces spaced apart from each other in the treatment area. This permits simultaneous generation of several coagulation foci and dispenses with the need for electromechanical beam-deflecting units, which permits a shorter treatment time.

Systems, devices, and methods for treating a glaucomatous eye are provided. An amount of pulsed laser energy is delivered to the pars plana of the eye by a hand-holdable device which comprises a hand-holdable elongate member and a contact member disposed on an end of the elongate member. A contact surface of the contact member is placed in direct contact with the eye so that a reference edge of the contact member aligns with the limbus and a treatment axis defined by the elongate member is angularly offset from the optical axis of the eye. The amount of pulsed laser energy delivered is insufficient to effect therapeutic photocoagulation but is sufficient to increase uveoscleral outflow so as to maintain a reduction from pre-laser treatment intraocular pressure. Amounts of pulsed laser energy will be transmitted to a circumferential series of tissue regions of the eye.

A surgical probe includes a cannula assembly, having a graded index (GRIN) fiber that is configured to receive a multi-spot light beam at a proximal end and to emit the multi-spot light beam at a distal end; an adapter, having a distal end, configured to receive the cannula assembly, with the proximal end of the GRIN fiber, a proximal end, configured to couple to a light guide via a connector and to receive a light delivered by the light guide from a laser source to the adapter, and an interface, configured to couple the light delivered by the light guide to the proximal end of the GRIN fiber; wherein a length of the GRIN fiber is sufficiently long that the interface is outside a patient's eye during a photocoagulation procedure.

An ophthalmologic photocoagulator and photoagulation method thereof in which visibility of sighting laser beam which is projected onto the eye fundus of an eye to be examined is improved and a loss in the amount of treatment laser beam can be reduced. The ophthalmologic photocoagulator includes: a treatment laser oscillator that oscillates a treatment laser beam for conducting treatment on a diseased part of the eye to be examined by photocoagulation; a sighting laser oscillator that oscillates a sighting laser beam for conducting sighting on the diseased part of the eye to be examined which is to be irradiated with the treatment laser beam; and a polarization beam splitter for combining an optical path of the treatment laser beam with an optical path of the sighting laser beam by polarization coupling. The treatment laser beam oscillating from the treatment laser oscillator and the sighting laser beam oscillating from the sighting laser oscillator have similar colors.

The present invention provides variable spot size illuminators that provide a light spot on a treatment plane by utilizing a zoom lens to direct light received from an image of a light source formed on an intermediate image plane onto the treatment plane. The zoom lens allows varying the size of the treatment spot while ensuring that the treatment spot exhibits parfocality. An illuminator of the invention can be utilized for performing a number of ophthalmic surgical procedures, such as, photocoagulation, transpupillary thermal therapy, and photodynamic therapy.

A method for treating the side effects resulting from ophthalmic lasery surgery of the eye. The method administers stem cells as a means for treating the destruction of retinal and other tissues resulting from photocoagulation in the treatment of diabetic retinopathy and other eye disorders. Methods for using the invention with other ophthalmic laser surgical procedures, and other eye disorders, are also disclosed.

The invention discloses an automatic light-changing welding goggles response characteristic testing system which comprises a white light source, a collimating lens, a sample, a sample stage, a photomultiplier, a triggering light source, an acquisition and control circuit, a computer, a stepping motor and a stepping motor driver; the same optical axis is provided with the white light source, the collimating lens, the sample stage, and the photomultiplier, the photomultiplier is connected with the acquisition and control circuit and the computer, the triggering light source is connected with the acquisition and control circuit and the computer, the sample is placed on the sample stage, the sample stage is provided with the stepping motor, and the stepping motor is connected with the stepping motor driver and the acquisition and control circuit. The invention adopts the movable sample stage, and can measure the response time of different positions of the light-changing welding goggles; the invention adopts the semiconductor light source as the triggering light source, and therefore only the quick modulation is implemented for the driving voltage of the light source, the pulse light intensity can be gained; the invention adopts a sleeve type spring device to press a laser on a detector of the sample in order to result in that the laser doesn't leak light.

A photocoagulation system is described herein that facilitates multi-spot laser treatment procedures inside the eye and close to the patient's retina. In one example embodiment, a modified endocular probe operates with a laser system to move the probe or a probe needle so as to project a multi-spot pattern on a patient's retina by controlling the rotation movement of the needle (and needle tip). In addition, the system facilitates maneuverability and angular deviation of the needle tip and synchronizes these different movements with the laser photocoagulator system so as to project the aiming beam and thereafter the laser treatment beam in the desired pattern location with the desired exposure time and power.

Systems and processes are described relating to laser-based ophthalmic intervention technologies and, more specifically, to techniques for delivering reproducible amounts of laser energy to create visible and sub-visible lesions on an eye. The subject technology may provide a user with the ability to adjust the amount of energy to be delivered to the eye tissue by selecting a single numerical value. In response, the system may adjust the power and / or duration of the laser treatment beam pulse according to an operating curve determined by the system.

A method of performing therapy on target tissue in a patient's eye of an embodiment uses an ophthalmic treatment system having a light source for producing treatment light and a delivery system for delivering the treatment light to the patient's eye. The method includes steps of: obtaining a sample treatment pattern of spots of the treatment light for projection onto the patient's eye; causing to be displayed the sample treatment pattern; receiving user instruction to add or subtract spots from the sample treatment pattern to produce a new treatment pattern; producing treatment light; and deflecting the treatment light to produce the new treatment pattern for projection onto the patient's eye.

The invention relates to a research method for the relation between a laser photocoagulation range and a diabetic retinopathy prognosis, the purpose of which is to provide an important control strategy for the timing and method of treating the diabetic retinopathy with laser by comparatively analyzing the relation between the laser photocoagulation range and the diabetic retinopathy prognosis. By comparing different laser modes in three months of laser treatment, the research method discovers that the visual field defect of a diseased eye is obviously caused by panretinal laser photocoagulation while the retinal function outside the macular region is protected by local retinal laser photocoagulation and quadrant laser photocoagulation. The research proves that the quadrant retinal laser photocoagulation carried out on the diseased region of the retina can remarkably improve the anoxic state of the retina, prevent the growth of new blood vessels on the retina and protect the visual function of the macular region.

The invention discloses a traditional Chinese medicine composition for treating central retinitis, which is prepared from the following raw materials in parts by weight: 10-40 parts of phaseolus calcaratus, 1-16 parts of rhizoma alismatis, 5-25 parts of poria, 1-16 parts of radix stephaniae tetrandrae, 2-22 parts of radix astragali, 5-25 parts of radix salviae miltiorrhizae, 1-20 parts of Chinese angelica, 1-20 parts of rhizoma atractylodis macrocephalae, 5-25 parts of earthworm, 1-20 parts of herba epimedii, 1-20 parts of cassia twig, 8-28 parts of caulis spatholobi and 1-13 parts of liquorice root. The traditional Chinese medicine composition disclosed by the invention has moderate property and good curative effect, and is used for treating central retinitis without laser photocoagulation.

A method and system for treating presbyopia by an endoscope-assisted laser system consists of a camera connected to a signal-fiber, an illumination-fiber and a laser device connected to a laser-fiber. The endoscope gauge probe is inserted into the eye for real time monitoring of the photocoagulation process of the ciliary-body (or process) of the eye in a predetermined area inside the eye. The preferred laser device produces a laser beam having a wavelength 0.7 to 1.3 micron, laser fluency about 0.5 to 5.0 W / cm̂2, and operated at a continuous mode, preheating mode or a pulsed-mode having a repetition rate of (0.5-5,000) Hz. The presbyopia treatment can be combined with glaucoma or cataract procedure to achieve multi-function in single system.