24 results about "Capsulotomy" patented technology

Apparatus and methods are described for performing a capsulotomy procedure on a patient's eye. A diathermic capsulotomy tool includes a diathermic cutting element at its tip. An imaging system images the diathermic capsulotomy tool and the patient's eye. A computer processor drives a robotic unit to insert the diathermic capsulotomy tool into the patient's eye via an incision in a cornea of the patient's eye, such that the tip of the tool is disposed within the patient's eye and a remote center of motion location of the tool is disposed within the incision. The computer processor drives the robotic unit to move the cutting element in a circular motion while maintaining the remote center of motion location of the tool within the incision. Other applications are also described.

The utility model discloses a capsulorhexis marker for cataract surgery, relates to the technical field of surgical instruments, solves the problems that an existing device is low in operation stability and low in operation accuracy, and adopts the following scheme that an electric telescopic rod A is fixedly installed on the top face of a base. Through the arrangement of an electric telescopic rod A, an air cylinder and an electric telescopic rod B, the electric telescopic rod A and the air cylinder can drive an outer ring sleeve to move up and down, so that the outer ring sleeve is aligned with the edge of the cornea, then the electric telescopic rod B drives an inner ring to move downwards, a little pressure is applied to the cornea, and through mechanical operation, the stability and safety are improved; meanwhile, through the arrangement of a display screen, a super-definition camera and an illuminating lamp, when the outer ring sleeve and the inner ring are in contact with the cornea, the illuminating lamp illuminates the eyes, the super-definition camera transmits images of the eyes to the display screen to be displayed, observation of medical staff is facilitated, and the operation precision is improved.

This disclosure relates to surgical instruments and methods for incising soft tissue. The instruments may include one or more atraumatic features for reducing a likelihood of trauma to adjacent tissue.

The utility model discloses a device for simulating capsulorhexis operation, which comprises a working table and a thin film for simulating a cataract capsule membrane, and is characterized in that the working table is provided with a planar table top, and the thin film is fixed on the table top; a simulation side notch and a simulation main notch are further formed in the edge of the table board; a first gap is formed in the middle of the simulation side incision and is used for clamping a pair of toothed tweezers at the simulation side incision or inserting the tip of the tweezers into the first gap in the middle of the simulation side incision so as to simulate eyeball fixation in the operation process; a second gap is formed in the middle of the simulation main incision, and capsulorhexis tweezers can penetrate through the second gap in the middle of the simulation main incision to simulate capsulorhexis operation. Compared with the prior art, the device for simulating the capsulorhexis operation can simulate the capsulorhexis operation by arranging the working table and the thin film for simulating the cataract capsular membrane and arranging the simulation side notch and the simulation main notch in the edge of the table top, is convenient for a beginner to carry out capsulorhexis hand feeling training, and is small in occupied area and simple and easy to use.

The present invention relates to the field of medical device technology, specifically a capsular scissors for cataract surgery, comprising a first rod, a second rod, a first blade, a second blade, a connecting assembly, a first elastic sheet, a second elastic sheet, a rotating assembly and a telescopic assembly. The present invention changes the force angle during operation by cooperating with the connecting assembly and the rotating assembly, reducing the corneal incision required to be opened, so as to facilitate subsequent patient recovery, prevent conventional capsular scissors from opening and closing and causing the corneal incision to increase, and prevent the problem that the size and position of the capsular incision are difficult to control with capsulotomy forceps. The capsular membrane can be cut more accurately, and the size can be controlled, and the cutting edge is smooth, so as to facilitate subsequent patient recovery and surgical operations. The telescopic assembly and the elastic sheet ensure operability when reducing the shearing angle, thereby improving the accuracy of the surgery, preventing damage to the intraocular tissue during the surgery, and improving the safety and effectiveness of the surgery.

A system (20) includes a radiation source (48) and a controller (44). The controller is configured to define a treatment zone (88) on a capsular bag (86) of an eye (25) of a subject (22), and to form an opening (96) in the capsular bag by irradiating a plurality of target site regions (94) within the treatment zone in an iterative process after the treatment zone is defined, the iterative process including, during each of a plurality of iterations of the process, acquiring an image (98) of at least a portion of the capsular bag, designating one of the target site regions based on the acquired image, and causing the radiation source to irradiate the designated target site region. Other embodiments are also described.

A surgical device and procedure are provided for smoothly and easily accessing tissue to perform microsurgery, including a capsulotomy of a lens capsule of an eye. The device includes a handpiece with a tip for insertion into an incision in the cornea of the eye. A sliding element is disposed within the handpiece and a suction cup is mounted to the sliding element. The sliding element can be translated to move the suction cup into and out of the handpiece. A compression mechanism associated with the suction cup and the handpiece compresses the suction cup for deployment through the tip of the handpiece. The suction cup can expand inside the anterior chamber into a cutting position on the lens capsule. A cutting element mounted to the suction cup is used to cut a portion of the lens capsule and to remove the portion from the eye. The cutting element may be mounted to a cutting element support structure in a way that prevents heating of the device.

A capsulotomy device has a tool holder. The tool holder includes a cutting blade at its distal end and is arranged to move in a distal direction in the device to form an operative state of the device where the cutting blade projects out of a distal end of the capsulotomy device. The at least a portion of the tool holder is adapted in the device's operative state to reciprocate in the distal and proximal directions to urge rotation of the cutting blade.

Provided is an ophthalmic surgical apparatus configured for performing an automated capsulotomy or a comparable surgical procedure on a recipient eye's Descemet membrane hereinafter coined a descemetomy. The ophthalmic surgical apparatus includes an ophthalmic surgical handpiece supporting a compact cutting head which can be inserted through a 2.4 mm or less corneal incision into an eye's anterior chamber and manipulated inside the eye's anterior chamber for performing automated centered circular incisions on interior eye tissue. The ophthalmic surgical apparatus also includes a clinical practitioner operated power source for controlled activation of the ophthalmic surgical handpiece's cutting head. The power source typically has two or more activation modes for controlled activation of an ophthalmic surgical handpiece's cutting head in terms of electrical power rating, activation duration, and the like.

Described herein is a device for performing capsulotomy that improves the uniformity of suction and produces a rolled-up capsulotomy edge. The device includes a suction cup forming a tapered circumferential suction chamber capable of applying suction to tissue in a first direction. A cross-sectional area of the tapered circumferential suction chamber decreases from a proximal end of the device toward a distal end of the device. The device also includes a rod coupled to the suction cup to provide suction to the suction cup. The stem forms a neck that enables fluid to flow to the suction cup in a direction substantially perpendicular to the first direction. The device also includes a cutting element configured to resect tissue.

A capsulorhexis device is inserted into an incision site of a cornea to make an incision in an anterior capsule surrounding a crystalline lens. The capsulorhexis device includes a loop having elasticity and conductivity; a moving member having one end fixed and coupled to the loop; an insertion guide configured so that, while the incision is being made in the crystalline lens capsule, a front end thereof is inserted into the incision site of the cornea; and a housing having one end coupled to a rear end of the insertion guide, wherein the loop is housed in the housing and, to make the incision in the crystalline lens capsule, slides in the housing together with the moving member to pass through the insertion guide and be deployed into an anterior chamber of the eye.

The utility model discloses a capsulotomy device, which belongs to the technical field of medical supplies and comprises an injection tube, the hollow conical head is in threaded connection with the injection tube, and a capsulotomy ring is placed in the conical head; the two limiting pipes and the two mounting pipes are arranged on the periphery of the injection pipe, and connecting ring plates are fixedly connected between the limiting pipes and the mounting pipes; the multiple movable plates are arranged between the two limiting pipes, the side faces of the movable plates are connected with clamps, the clamps are fixedly provided with lamps used for illumination, and the side faces, away from the clamps, of the movable plates are connected with arc-shaped plates matched with the peripheries of the injection pipes; an elastic arc-shaped rubber pad is bonded to the side face, close to the injection pipe, of the arc-shaped plate, two magnet blocks are bonded to the periphery of the movable plate, the two limiting pipes are made of iron materials capable of being attracted to the magnet blocks, an anti-skid pad is bonded to the inner wall of the mounting pipe, and a plurality of threaded channels are formed in the periphery of the mounting pipe. The capsulotomy device can be adjusted to different degrees, and illumination to different degrees is achieved.

A design is described herein for rings and for cutting rings for a device used in capsulotomy procedures. A set of ring dimensions can describe a desired height of a ring at each location of the ring. The set of ring dimensions is also associated with an intended wall thickness, and thus is associated with an intended cross-sectional area at each ring location. A wall thickness at each portion of a can vary from the intended wall thickness specified by the set of ring dimensions at various locations of the ring. At these locations, the height of the ring can be varied such that the resulting cross-sectional area of the ring at these locations is substantially similar to the intended cross-sectional area of the ring at the locations.

A system (20) includes a radiation source (48) and a controller (44). The controller is configured to define a treatment zone (88) on a capsule (86) of an eye (25) of a subject (22), and to form an opening (96) in the capsule, subsequently to defining the treatment zone, by irradiating multiple target regions (94) within the treatment zone in an iterative process that includes, during each one of multiple iterations of the process, acquiring an image (98) of at least part of the capsule, designating one of the target regions based on the acquired image, and causing the radiation source to irradiate the designated target region. Other embodiments are also described.

The present invention describes a device for performing a capsulotomy that improves the uniformity of suction and produces a rolled capsulotomy edge. The device includes a suction cup forming a tapered circumferential suction chamber that is capable of applying suction to tissue along a first direction. The cross-sectional area of ​​the tapered circumferential suction chamber decreases from the proximal end of the device toward the distal end of the device. The device also includes a rod coupled to the suction cup to provide suction to the suction cup. The rod forms a neck that enables fluid to flow toward the suction cup in a direction substantially perpendicular to the first direction. The device also includes a cutting element configured to excise tissue.

A surgical device and procedure are provided for performing microsurgery, including a capsulotomy of a lens capsule of an eye. The device has an elastically deformable cutting element mounted within an elastomeric suction cup. The suction cup is attached to an arm for manipulating the device. The device can be inserted into the anterior chamber of the eye, through a corneal incision, to cut a piece from the anterior portion of the lens capsule of the eye. The device is secured against the lens capsule using suction applied by one or more suction elements. The device is then removed from the eye, with the cut piece of membrane retained within the device by suction.

The invention relates to a modular Modular Laser Therapy Device (MLTD) to be used by ophthalmologists for eye surgery that integrates three most frequently used therapeutic devices into a single, compact unit enabling the treatment with capsulotomy, vitreolysis and iridotomy, with selective laser trabeculoplasty and with photocoagulation. While providing such modular laser device a method is provided for optomechanically coupling different ophthalmic modules into the single unit using two laser sources.

This disclosure relates to surgical instruments and methods for incising soft tissue. The instruments may include one or more atraumatic features for reducing a likelihood of trauma to adjacent tissue.

Methods and systems for performing laser-assisted surgery on an eye form one or more small anchoring capsulotomies in the lens capsule of the eye. The one or more anchoring capsulotomies are configured to accommodate corresponding anchoring features of an intraocular lens and / or to accommodate one or more drug-eluting members. A method for performing laser-assisted eye surgery on an eye having a lens capsule includes forming an anchoring capsulotomy in the lens capsule and coupling an anchoring feature of the intraocular lens with the anchoring capsulotomy. The anchoring capsulotomy is formed by using a laser to incise the lens capsule. The anchoring feature can protrude transverse to a surface of the intraocular lens that interfaces with the lens capsule adjacent to the anchoring capsulotomy.

Provided is an ophthalmic surgical apparatus configured for performing an automated capsulotomy or a comparable surgical procedure on a recipient eye's Descemet membrane hereinafter coined a descemetomy. The ophthalmic surgical apparatus includes an ophthalmic surgical handpiece supporting a compact cutting head which can be inserted through a 2.4 mm or less corneal incision into an eye's anterior chamber and manipulated inside the eye's anterior chamber for performing automated centered circular incisions on interior eye tissue. The ophthalmic surgical apparatus also includes a clinical practitioner operated power source for controlled activation of the ophthalmic surgical handpiece's cutting head. The power source typically has two or more activation modes for controlled activation of an ophthalmic surgical handpiece's cutting head in terms of electrical power rating, activation duration, and the like.

Embodiments of the invention provide hydrodissection and / or PCO prevention or reduction in a patient undergoing eye surgery. In one embodiment, the invention is a surgical device for cutting and excising a portion of tissue, for example in performing a lens capsulotomy. A capsulotomy tip is inserted into an eye through an incision in the surface of the eye. The capsulotomy tip includes a suction cup to provide suction to the lens capsule. Then suction is applied via the suction cup to secure the capsulotomy tip to the eye. In some embodiments, after the capsulotomy tip is secured to the lens capsule, a cutting element of the capsulotomy tip is used to cut a tissue of the eye. Fluid is pushed through the capsulotomy tip and the capsulotomy tip is removed from the eye. Moreover, disclosed is an intraocular lens (IOL) to be used in conjunction with the surgical device.

A capsulotomy tool having an end effector / two-part oscillating perforating element for creating a controlled automated or assisted precision shaped opening in the anterior capsule. The capsulotomy tool has a shaft with a proximal end and a distal end with an end effector adjacent the distal end of the shaft. In use within an eye, the end effector is adapted and configured for controlled cutting of a surface an anterior capsule of the eye. There is also an actuator coupled to the proximal end of the shaft. The actuator is specifically adapted to drive the shaft so as to produce a controlled longitudinal motion of the perforating end effector. The controlled motion is adapted and configured for directing the controlled cutting via robotic surgical system to create an opening in an anterior capsule of the eye along a cutting path, based on image-guidance data received from an imaging system.

A device is described herein for performing capsulotomies that improves temperature uniformity and current flow around a cutting element of the device. The device includes a series of features whose geometries help remove cold and / or hot spots from the cutting element while maintaining the mechanical strength of the cutting element. In an embodiment, a device includes a cutting element and one or more electrical leads for providing an electrical discharge to the cutting element. The device further includes wire tabs configured to conductively couple an electrical lead to cutting element. Each wire tab includes a central conductive path and one or more conductive shunt paths conductively separated by one or more slots. The device further includes anchor tabs that are each associated with a slot disposed along the circumference of the cutting element and positioned to at least partially separate an anchor tab from a portion of the cutting element.