39 results about "Vitrectomy" patented technology

The invention discloses a front eye vitrectomy handle device, and relates to the technical field of vitrectomy equipment. Comprising an end cover, a shell, a rotary cutter, a motor and a negative pressure pipeline, the shell is of a hollow stepped cylindrical structure with one closed end and one open end; the rotary cutter is of a hollow cylindrical structure with one closed end and one open end; the rotary cutter is rotationally connected in the shell in a sleeving manner, a first adsorption hole is formed in the side wall of the shell, a second adsorption hole is formed in the side wall of the rotary cutter, and the end cover is detachably connected to the open end of the shell and seals the open end of the shell; a second channel is arranged in the end cover, the opening end of the rotary cutter is rotationally sleeved and hermetically connected with the second channel, the second channel is further fixedly and hermetically connected with a negative pressure pipeline, and the other end of the negative pressure pipeline is connected with a negative pressure source; the motor is arranged in the shell and drives the rotary cutter to rotate in the shell. The device is simple in structure, low in manufacturing cost, capable of utilizing existing resource facilities of hospitals, very convenient to use and capable of being used in primary hospitals.

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.

The utility model relates to the field of retina membrane stripping, and discloses a vitreous cutting light guide fiber of a combined membrane stripping device, which comprises a light guide head, the outer wall of the light guide head is fixedly connected with a handle, the upper surface of the handle is fixedly connected with a switch, the inside of the light guide head is fixedly connected with a fixed rod, the outer wall of the light guide head is rotatably connected with a nut sleeve, and the nut sleeve is fixedly connected with the switch. The fixing rod is slidably connected to the interior of the nut sleeve, a sliding groove is formed in the nut sleeve, the fixing rod is slidably connected to the interior of the sliding groove, a clamping plate is fixedly connected to the outer wall of the fixing rod, and a limiting groove is formed in the nut sleeve. According to the utility model, the power interface is connected with a power supply, the on-off of the light guide lamp and the start and stop of the film stripping device head are controlled through the switch, the nut sleeve is rotated, so that the nut sleeve rotates on the outer walls of the fixed rod and the clamping plate, and the nut sleeve rotates to drive the outer pipe to slide and stretch left and right, thereby driving the film stripping device head to slide and stretch together. The effect of facilitating telescopic adjustment of the film stripping device head is achieved.

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 utility model provides a medical flow control device for eyes, which relates to the technical field of medical instruments and is characterized in that a first air pressure interface and a second air pressure interface are communicated with the tops of a first accommodating cavity and a second accommodating cavity in a one-to-one correspondence manner; the liquid phase areas of the first containing cavity and the second containing cavity are in fluid communication with the infusion bag connector, the first control valve is installed between the first containing cavity and the infusion bag connector, and the second control valve is installed between the second containing cavity and the infusion bag connector. The vitreous incision infusion connector and the super milk filling connector are communicated with the second containing cavity and the first containing cavity in a one-to-one correspondence mode, first pressure detection devices are installed in pipelines of the vitreous incision infusion connector and the super milk filling connector, and specific air pressure is input through the first air pressure connector and the second air pressure connector respectively. And the working pressure is detected through the first pressure detection device, so that the infusion pressure and the perfusion pressure can be regulated and controlled, and the pressure regulation and control are more flexible and accurate.

Certain embodiments provide a method of performing ocular biometry. The method includes performing phacoemulsification to emulsify and remove an internal lens of an eye. The method further includes performing vitrectomy to remove vitreous from the eye. The method also includes placing a trial in a lens capsule of the eye. The method further includes performing biometry with a first biometry system to provide measurements including at least one of an axial length of the eye, a curvature of a cornea of the eye, and toric axis. The method also includes removing the trial from the lens capsule.

The utility model discloses a vitrectomy postoperative position table, which belongs to the technical field of position tables, and comprises a position table body, an adjusting device and a fixing device, the surface of the position table body is fixedly connected with a table plate, the adjusting device is mounted on the surface of the position table body through the fixing device, the adjusting device comprises a mounting pipe, and the mounting pipe is fixedly connected with the table plate. A mounting pipe is arranged on the surface of the table plate through a fixing device, an adjusting plate is slidably connected to the inner wall of the mounting pipe, and a plurality of evenly-distributed adjusting grooves are formed in the surface of the adjusting plate. The height of the body position table can be adjusted more conveniently, so that the body position table is suitable for people with different heights, the application range of the body position table body is expanded, the hands of a patient are liberated, the patient can move better, postoperative recovery of the patient is facilitated, and the using effect and practicability of the body position table body are improved.

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.

The utility model discloses a multifunctional anterior eye segment positioner which comprises a mother ring, a bottom ring groove is formed in the bottom of the mother ring, a sub-ring is installed at the lower end of the bottom ring groove, and the sub-ring is one of a corneal trephine positioning ring, a vitrectomy puncture positioning ring or a Yamane crystal suspension operation positioning ring. The corneal trephine positioning ring comprises a corneal trephine positioning ring body, and further comprises two lining rings arranged on the inner wall of the corneal trephine positioning ring body, the calibers of the two lining rings are 8 mm and 9 mm respectively, and the caliber of the corneal trephine positioning ring body is 10 mm; the first through grooves and the second through grooves are formed in the outer wall of the vitrectomy puncture positioning ring, the number of the first through grooves and the number of the second through grooves are both four, the distance between the first through grooves and a ring opening of the vitrectomy puncture positioning ring is 4 mm, and the distance between the second through grooves 12 and the ring opening of the vitrectomy puncture positioning ring is 3.5 mm. The three sub-ring structures are assembled and connected by the mother ring, so that three eye operations can be positioned, the error of the eye operations is reduced, and the accuracy of the eye operations is improved.

The invention discloses a vitrectomy transillumination jacking and pressing device, which belongs to the technical field of medical instruments and comprises a jacking and pressing device and light-guide fibers arranged in the jacking and pressing device. Wherein the jacking device is a tubular part with a preset length and an inner diameter, two ends of the tubular part are respectively connected with a holding end and a working end, the holding end and the working end are hollow, light-transmitting illumination can be performed from the outside while local eyeball jacking is performed, and the eyeball wall is light-transmitting to observe the fundus.

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 invention discloses a non-contact fundus imaging wide-angle lens adapter for an operating microscope, and the adapter comprises a connection 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 is high 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 more smoothly adjust the imaging focal length in the operation process.

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.

The utility model discloses a pressing device sleeved at the front end of a vitrectomy illumination optical fiber, which relates to the field of ophthalmologic surgical instruments and comprises a main body, a pressing part and a sleeve component, a first cavity for accommodating an optical fiber and a second cavity for accommodating a handle are arranged in the main body, the pressing part is arranged at the front end of the main body and surrounds the front end of the first cavity, and the sleeve component is arranged in the first cavity. And a sleeve component sleeved on the handle is arranged at the rear end of the main body. The whole device is of a sleeve structure and can be arranged on an illumination optical fiber used in an existing wave cutting operation in a sleeving mode, the optical fiber enters the first cavity, the head of the optical fiber reaches the jacking and pressing part, the jacking and pressing part has the illumination function and the jacking and pressing function at the same time, a surgeon can complete jacking and illumination actions with one hand, and the working efficiency is improved. The problem that vitreous body cutting, eyeball jacking and pressing and intraocular lighting actions can be completed only through tacit cooperation of a surgeon and an assistant in a vitrectomy operation is solved, and the operation efficiency and the success rate are improved.

The utility model relates to an infusion tube fixing device for a vitrectomy system, which can effectively prevent an infusion tube from loosening and falling off, and adopts the technical scheme that arc-shaped clamping plates are arranged at two ends in a fixing device body, and then the inner sides of the two clamping plates are connected to the outer side wall of the infusion tube through non-slip mats in an attached manner; the friction force between the fixator body and the infusion tube can be increased through the two anti-skid pads; the two ends of the interior of the fixator body are provided with grooves in a penetrating and sliding mode, then transmission gears are connected to the outer sides of the two pressing rods in a meshed mode through racks, and moving rods connected to the outer sides of the two transmission gears in a meshed mode through the racks can be driven to contract and move while the two pressing rods are pressed to contract and move; and at the moment, the two clamping plates can be driven to be separated from the infusion tube, so that the infusion tube can be quickly disassembled, assembled and separated, and infusion tubes with different diameters can be conveniently clamped and positioned.

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.

1. The name of the product under this design: Ultrasound Vitrectomy Machine. 2. Purpose of this design product: for ophthalmic 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 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.