27 results about "Vitrectomy" patented technology

The present disclosure generally relates to microsurgical instruments for ophthalmic surgical procedures, and more particularly, methods and microsurgical instruments for vitreoretinal procedures. In certain embodiments described herein, a vitreoretinal procedure is performed utilizing two surgical instruments: 1) a treatment instrument configured to a) treat a target ophthalmic tissue (e.g., sever and remove the vitreous body), and b) infuse fluid into the intraocular space to maintain intraocular pressure (IOP); and 2) an illumination probe for providing illumination within the intraocular space. The combined treatment and infusion functionalities of the treatment instrument eliminate the need for a separate infusion cannula, thus enabling the vitreoretinal procedure to be performed with only two instruments and reducing the number of incisions made in the eye. Additionally, utilization of two instruments facilitates easier manipulation of the eye by a surgeon, as one of the two instruments can be used to “steer” the eye during the procedure.

An elevation-dependent surgical pneumatic cutting system is provided. The system includes an absolute pressure sensor for sensing an ambient pressure. The system also includes a pressure drive chamber that receives pressurized air, a supply outlet supplies pressurized air to a pneumatic vitrectomy handpiece and a relief exhaust line exhausts pressurized air. A proportional relief valve is in communication with the relief exhaust line. The pressurized air is exhausted through the proportional relief valve when a supplied air pressure, sensed by a line pressure sensor, exceeds a threshold opening pressure. The threshold opening pressure and an open position are set based on feedback from the absolute pressure sensor indicative of the ambient pressure, whereby the threshold opening pressure of the proportional valve and the open position of the proportional relief valve are variable based on the sensed ambient pressure.

1. The name of the design product: ultrasonic emulsification instrument for ophthalmology. 2. The use of the design product: used in ophthalmic operating room, the operation equipment for cataract lens core fragmentation, perfusion and suction and anterior segment vitrectomy and electrocoagulation. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view 1.

The invention discloses an intelligent head bracket for ophthalmologic operation. The intelligent head bracket comprises a mounting frame, a positioning rod, a head frame adapter, a bracket body, a head supporting tray, an air pressure type lifting assembly, an adjusting structure and a head fixing structure. Through cooperation of a separated expansion structure and a press-fit closed structure, intelligent distribution of air paths is achieved with the dead weight of the head of a patient as a control signal, the air paths in a pressed area are closed to form a firm bearing face, and the air paths in an unpressed neck area are smooth; by combining a multi-cavity independent fine adjustment structure, a multi-dimensional angle adjustment system and a mechanical locking type head fixing structure, personalized supporting of the head and the neck, fine hardness adjustment in an operation, multi-dimensional body position adjustment and reliable fixing are achieved. The head fixing device can adapt to patients with different head shapes / neck lengths without an electronic sensor, is high in supporting stability and good in comfort, does not interrupt the operation process during operation adjustment, and provides a reliable head fixing solution for high-precision ophthalmologic operations such as cataract and vitrectomy.

The utility model discloses a vitrectomy head for vitrectomy in the ophthalmology department, and relates to the technical field of medical instruments, the vitrectomy head comprises a rear end grab handle part, a front end part and a knife pouch connecting seat which are detachably connected in sequence, the front end part is formed by splicing half shell parts on the two sides, and an outer knife pouch is connected to the knife pouch connecting seat; the rear end of the rear-end grab handle part is provided with an installation cavity with an opening extending to the end face, a piston cavity is formed in the installation cavity through a blocking part detachably installed in the installation cavity, a piston part matched with the piston cavity is connected with the core cylinder into a whole through two elastic check rings, and one end of the core cylinder penetrates through the blocking part to extend outwards. The other end of the core cylinder penetrates through the rear-end grab handle part and extends into the front-end part, the inner cutter core connected with the core cylinder penetrates through the front-end part and extends into the outer cutter sleeve, a cutter return air path communicated with one end of the piston cavity is arranged in the rear-end grab handle part, and a cutter feeding air path communicated with the other end of the piston cavity is arranged in the blocking part. The operation cost is low, and resources are saved.

The invention discloses a calculation method for standardized statistics of the area of a retinal fibrous vascular membrane, and the method comprises the following steps: employing a same non-contact wide-angle imaging system and a same amplification factor, and taking an optic disc as a center to shoot a standard eye model reference image containing a preset model vitreous head and an eye fundus image in a patient eye operation; by taking a vitreous body cutting head as a reference, aligning the two images through Canny edge detection, minimum circumcircle positioning and Hough transform, and zooming until the contour of the vitreous body cutting head coincides; the method comprises the following steps: carrying out graying, de-noising, Otsu segmentation, connectivity screening and edge fitting on the basis of a white highlight feature of an FVM (Fiber Virtual Machine), so as to obtain an FVM contour; and overlapping the grids to count the number of the covered grids, and finally calculating the actual area of the FVM according to a formula. The invention provides an FVM area quantification calculation scheme which is uniform in reference standard, accurate in quantification and wide in application range, and provides a uniform quantification standard for comparing the FVM resection efficiency of different surgical instruments.

1. The name of the product under this design: Vitrectomy Machine. 2. Purpose of this design product: This design product is a vitrectomy machine used in vitrectomy surgery. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention belongs to the technical field of vitrectomy, and particularly discloses a vitrectomy sampler which comprises a holding shell and a connecting shell, the connecting shell is arranged at the upper end of the holding shell, a friction sleeve is arranged on the upper end face of the connecting shell in a penetrating mode, and a sampling needle tube is arranged in the friction sleeve in a penetrating and sliding mode. The lower end of the sampling tube and the lower end of the filling tube penetrate through the sampling needle tube and are fixed to the inner side wall of the connecting shell through a mounting plate, the sampling tube and the filling tube are arranged in the sampling needle tube, a holding pressing transmission assembly and a sampling transmission assembly are arranged in the holding shell, and a sampling barrel and a filling barrel are arranged in the connecting shell; a first piston and a second piston are arranged in the sampling barrel and the filling barrel respectively, and a staggered transmission assembly is arranged in the connecting shell and connected with the lower end of the sampling needle tube. The sampling tube and the filling tube with different lengths are arranged, so that the operation of sampling the vitreous body and filling the posterior cavity of the eyeball can be completed at one time, the operation is simple and convenient, the operation efficiency is improved, and meanwhile, the pain of a patient is reduced.

1. Name of the product in this design: Glass cutting head (statically indeterminate needle device). 2. Purpose of this design: To connect to ophthalmic vitrectomy equipment and to serve as a vitrectomy head for cutting the vitreous body and eye tissues. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design. 6. The product in this design is a long and slender item, and its length is drawn using an abbreviated method.

1. The name of the design product: ophthalmic surgical equipment. 2. The use of the design product: the design product is used for the surgical system of anterior and posterior segment of eye surgery, and ophthalmic cataract phacoemulsification and vitrectomy surgery. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The present invention relates to ophthalmic surgical devices, systems, and methods, and in particular to a vitrectomy device having a rotating inner tube.

The invention provides an intraocular self-adaptive laser vitrectomy system. The intraocular self-adaptive laser vitrectomy system comprises a dual-wavelength laser module, a scalpel head, a negative pressure suction unit, a medical medium perfusion unit and a control module, the dual-wavelength laser module comprises a laser head, a first laser source and a second laser source, the first laser source and the second laser source are connected to the laser head, and the first laser source is used for melting a transparent glass body; the second laser source is used for ablating blood-containing / turbid tissues; the scalpel head comprises a scalpel head body, an annular electrode and a pressure sensor, the scalpel head body is provided with a suction channel, the annular electrode and the pressure sensor are arranged at the end of the scalpel head body, the annular electrode is used for monitoring tissue contact pressure in real time, and the pressure sensor is used for monitoring intraocular pressure in real time; the negative pressure suction unit is connected with the suction channel; and the medical medium filling unit is connected with the suction channel. The device can assist in performing a vitrectomy operation, and operability and safety of the operation are improved.

1. The name of the design product: ultrasonic emulsification instrument for ophthalmology. 2. The use of the design product: surgical equipment for ophthalmic surgery, performing cataract lens core fragmentation, perfusion and suction, and anterior segment vitrectomy and electrocoagulation. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model relates to the technical field of eye surgeries, in particular to a vitrectomy positioning mechanism for eye surgeries, which comprises a positioning ring, a rotary sleeve cover, an eyelid spreader and a PC (personal computer) operating panel, the rotary sleeve cover is clamped at the top of the positioning ring, and an operating port is arranged at the top of the rotary sleeve cover. One end of the top of the rotary sleeve cover is connected with a supporting rod through a sleeving base, and a PC operation panel is installed at the top of the supporting rod through a screw. A sliding groove is formed in the PC operation plate, a sliding block slides in the sliding groove, and a positioning guide sleeve is arranged in the middle of the sliding block through a reserved through sleeve; according to the vitrectomy positioning mechanism for the eye surgery, eyeballs can be exposed under the sight of a doctor to the greatest extent, the sight during the surgery is not influenced, the positioning range of the vitrectomy is greatly expanded, the advancing track of a scalpel can be guided, and the quality of the vitrectomy surgery is improved.

The invention relates to a vitrectomy system (1) comprising a pneumatically operated surgical instrument (2), a console (3) configured to provide compressed air for operating the surgical instrument (2), and at least one pneumatic line (4) connecting the surgical instrument (2) to the console (3) and through which the compressed air is provided, wherein the at least one pneumatic line (4) has a section (4-1) away from the instrument and a section (4-2) near the instrument, wherein the inner diameters (5-1, 5-2) of the sections (4-1, 4-2) of the pneumatic line (4) are the same, and wherein the outer diameter (6-1, 6-2) and / or the material damping of the two sections (4-1, 4-2) differ.

In certain embodiments, a vitrectomy handpiece is provided. The vitrectomy handpiece includes a cutting assembly and a piezoelectric stack assembly. The piezoelectric stack assembly is coupled to the cutting assembly and is configured to actuate the cutting assembly to cut vitreous of an eye.

The utility model relates to the technical field of sclera compressors, in particular to a vitrectomy sclera compressor. Comprising a compressor body, a connecting line is installed on the surface of the upper end of the compressor body, the surface of the compressor body is sleeved with a protective sleeve, a light guide lamp is installed on the inner wall of the bottom end of the protective sleeve, and an adjusting device is arranged on the arc face of the end, close to the compressor body, of the protective sleeve and comprises a fixing ring. The inner wall of the fixing ring is fixedly connected with the arc surface of the compressor body, the arc surfaces of the two sides of the fixing ring are fixedly connected with fixing rods, the arc surfaces of the fixing rods slidably penetrate through moving frames, the arc surfaces of the fixing rods are sleeved with first springs, and the two ends of the first springs are fixedly connected with the moving frames and the fixing rods correspondingly. The inner wall of the moving frame is fixedly connected with a sliding rod. The vitrectomy sclera compressor has the advantage that the protective sleeve and the sclera compressor can be conveniently replaced, limited and protected.

The utility model discloses a non-contact fundus imaging wide-angle lens adapter for an operating microscope, and the adapter comprises a connecting assembly which is used for detachably installing the adapter on the operating microscope; a moving assembly; a focal length adjusting assembly; a wide-angle lens mounting assembly; the moving assembly is arranged on the connecting assembly, the moving assembly is connected with the focal length adjusting assembly, the focal length adjusting assembly is connected with the wide-angle lens mounting assembly, and the wide-angle lens can synchronously rotate and / or perform height adjustment along with the focal length adjusting assembly and can also synchronously move along with the moving assembly. The adapter provided by the utility model is strong in adaptability, and can be compatible with operation microscopes of almost all brands and models; the non-contact fundus imaging function can be achieved by adding the adapter for an old microscope and a common operating microscope, so that fundus vitrectomy can be performed, a brand-new microscope does not need to be purchased, and a large amount of cost can be saved for hospitals; the focusing and dynamic visual field adjusting functions are achieved, and a doctor can adjust the imaging focal length more smoothly in the operation process.

A portable, compact, standalone anterior vitrectomy apparatus includes a housing sized and configured to fit in the palm of a human hand. A vitrectomy cutter connectable to an air tubing connector in the housing via an air tubing. A pressure reservoir in the housing communicates with an air control valve which in turn communicates with the air tubing connector. An internal air compressor, arranged inside the housing, communicates with an air regulator for supplying compressed air to the pressure reservoir. A speed control switch controllably interface with the air control valve. A processor controllably interface with the speed control switch and control the air control valve through the speed control switch such that the air control valve delivers pulses of air from the pressure reservoir through the air control valve to drive the vitrectomy cutter.

The invention relates to the technical field of surgical instruments, and discloses a cutting instrument and vitrectomy equipment, and the cutting instrument comprises a fastening assembly and a cutting assembly. The fastening assembly comprises a supporting piece, a connecting piece and an operating piece, a mounting cavity is defined in the operating piece, the connecting piece is connected to the operating piece, the supporting piece is connected to the side, away from the operating piece, of the connecting piece, the supporting piece is provided with a hollow structure, and the two opposite sides of the supporting piece are communicated through the hollow structure; the cutting assembly comprises a holding part and a cutting part, the cutting part is provided with a first end and a second end which are opposite, the first end is connected to the holding part, the holding part is movably arranged in the mounting cavity, and the second end penetrates through the hollow structure and is suitable for cutting the glass body; the holding piece can move in the mounting cavity relative to the operating piece so as to drive the cutting piece to move relative to the supporting piece. According to the cutting instrument, the rigidity strength of the cutting piece can be improved, and the cutting piece can be adjusted according to operation requirements. The vitreous cutting equipment with the cutting instrument also has the advantages.

The eyeball vitreous body cutting knife comprises a cutting part and a handle part, the cutting part comprises an outer tube, a collecting window is formed in the side wall of the front end of the outer tube, and a breaking part is formed in the position, away from the collecting window, of the outer tube; the inner rod is rotatably and coaxially arranged in the outer pipe, and a shearing blade corresponding to the collecting window is arranged at the front end of the inner rod; the handle part is provided with a tool apron, the outer pipe is fixed to the tool apron, and a bubble cavity used for containing cut objects or waste liquid is formed in the tool apron; the broken part of the outer pipe is accommodated in the bubble cavity; the bubble cavity is communicated with the collecting window of the outer pipe from the interior of the outer pipe; the motor is in transmission connection with the inner rod; and a discharge duct. The eyeball vitreous body cutting knife aims at achieving the purposes of improving the cutting efficiency, simplifying the structure and possibly reducing the production cost by improving the driving mode and the structural design of the cutting knife, and meanwhile it is ensured that cut vitreous body tissue and waste liquid can be effectively discharged.

In certain embodiments, a vitrectomy handpiece is provided. The vitrectomy handpiece includes a cutting assembly and a piezoelectric stack assembly. The piezoelectric stack assembly is coupled to the cutting assembly and is configured to actuate the cutting assembly to cut vitreous of an eye.

The present application concerns a novel ophthalmic device comprising a contact lens and lens carrier, wherein the lens carrier is configured to surround and hold at least a portion of the lens within an interior portion of the lens carrier. One end of the lens carrier is configured to facilitate movement of the device and another end is configured to facilitate contact between the vitrectomy lens and the eye. The lens carrier retains the vitrectomy lens within the lens carrier when the device is manipulated.

Certain embodiments provide a radiofrequency vitrectomy device including a handpiece having an outer tube attached thereto, with a vibrating inner tube within the outer tube and coupled to a drive diaphragm. Extension and retraction air pressure control valves receive pressure from the extension and retraction channels and control the flow of gas from a pressurized gas source to the extension and retraction sides, respectively, of a chamber housing the drive diaphragm. The handpiece may include an input diaphragm coupled to a valve stem to which the extension and retraction valves are connected. One side of the chamber housing the input diaphragm is coupled to the extension channel, and the other is coupled to the retraction channel. An aspiration line passes through the input diaphragm and the valve stem and has an end in fluid communication with the inner tube.

The invention provides a liquid level measuring device for a surgical effusion box and an ophthalmology super-emulsion vitrectomy all-in-one machine, relates to the technical field of liquid level measurement for ophthalmology surgical effusion boxes, and utilizes the principle that light can be reflected and refracted on two different medium interfaces, the refractive indexes in liquid and air are inconsistent, and when no liquid exists in a container component, the liquid level of the operation effusion box can be measured by the liquid level measuring device and the ophthalmology super-emulsion vitrectomy all-in-one machine. The light beam emitted by the light source component is totally reflected at the side wall of the container component, the detection component detects the totally reflected light beam, or the light emitted by the light source component penetrates through the container component, and the detection component detects the light beam penetrating through the container component, so that a signal that no liquid exists in the container component is generated. The light beam is refracted at the side wall of the container component, the detection component cannot detect the refracted light beam, the energy distribution of the light beam is detected by the detection component, and the liquid level height is judged, so that the non-contact continuous liquid level test is realized, the volume of the container component is not influenced, a relatively large space is not occupied, and the device can be suitable for various scenes.

A vitrectomy probe includes a probe body and a needle portion projecting from the probe body. The needle portion includes a tube which extends at least partially in the needle portion and at least partially in the probe body. A cutter is positioned inside the tube in the needle portion. The cutter is at least partially composed of a permanently magnetic material. A field-creation unit is adapted to create an induced magnetic field, with the cutter being movable between a first position and a second position based in part on the induced magnetic field. The tube may be at least partially composed of a temporarily magnetic material. In one embodiment, the field-creation unit includes a driving magnet positioned in the probe body and adapted to selectively magnetize the tube.

The present invention relates to ophthalmic surgical devices, systems, and methods, in particular to vitrectomy device with a rotating inner tube.