92 results about "Phacoemulsification" patented technology

A system and method that includes inserting a needle of a phacoemulsification handpiece into an eye of a patient and vibrating the needle in a first trajectory. Matter from the eye is aspirated via an aspiration line while the needle is vibrated in the first trajectory. An indication is received, of a vacuum level in the aspiration line. Determined is, that the vacuum level has changed by at least a preset vacuum level change, and in response vibrating the needle is switched to a second trajectory, different from the first trajectory.

A system and method for provided a phacoemulsification surgery handpiece including a convertible sleeve for phacoemulsification surgery and irrigation / aspiration procedures. In a retracted state, the sleeve is in a desired relationship with the exposed portion of a phaco tip of the handpiece to support normal phacoemulsification surgery. In an extended state, the sleeve features a distally placed aspiration hole located forward from the distal end of a phaco tip to allow typical irrigation / aspiration procedures. A distal tip segment of the hand piece is overmolded by polyimide materials having a split feature to allow egress of a phaco tip.

A phacoemulsification system and a corresponding method are described. The system having a handpiece having a needle and a sleeve at a distal end to emulsify a lens of an eye; an irrigation module configured to supply irrigation fluid into the eye; an aspiration module configured for aspiring eye fluid; a priming cover for fitting over the distal end of the handpiece during a priming process; external pressure sensors coupled with the priming cover; one or more sensors for monitoring at least one of an irrigation pressure and an aspiration pressure; and a processor configured to operate in a priming process. The priming process includes operating the irrigation module to fill the irrigation channel with fluid and remove air bubbles. The one or more processors are configured for obtaining calibration pressure data from the external pressure sensors and for calibrating the sensors of the system.

The invention relates to the technical field of medical apparatus and instruments, and discloses an injection and suction handle sleeve cap for a polished capsular membrane in a cataract phacoemulsification surgery. The handle is detachably connected with the body; the injection and suction inlet is formed in the top end of the body; the filling opening is formed in the outer side wall of the body; the cleaning device is located in the body; the cleaning device comprises a cleaning brush, a cleaning seat, an inflatable airbag, an air pipe and a push column, a cleaning groove is formed in the outer side wall of the body, the cleaning seat is slidably connected to the interior of the cleaning groove, the cleaning brush is fixedly connected to the outer side wall of the cleaning seat, and the inflatable airbag is fixed to the interior of the cleaning groove; the sleeve cap body is detachably connected to the handle, hard damage of metal materials to eyes is avoided, attachments and chyloids are scraped and cleaned through the cleaning device, the situation that in a traditional operation, the attachments are extracted through an enhanced negative pressure system, and extraction rupture is caused to a capsular membrane due to too large negative pressure is avoided, and the operation efficiency is improved. And the safety performance of the operation is improved.

The invention discloses a dioptric scleroderma cataract dynamic intraocular pressure stable control ultrasonic emulsification system adaptive to a dual-channel operation, which comprises a host control unit, an ultrasonic emulsification handle, a perfusion and suction system, an intraocular pressure monitoring unit, a pressure balance module and a scleroderma fragmentation module, through cooperation of the intraocular pressure control module and the two-way operation type adaptive control module, a high-precision filling valve and a closed-loop suction pump are synchronously adjusted in real time according to anterior chamber built-in and external monitoring fusion data, and intraoperative intraocular pressure fluctuation is controlled within + / -2 mmHg; through pulse modulation and a self-adaptive negative pressure curve of the hardcore fragmentation enhancement module, the stability of the anterior chamber is ensured while the hardcore fragmentation efficiency is improved; fluid dynamics and energy parameters can be automatically optimized according to conventional incisions or micro incisions; according to the system, the anterior chamber stability problem in the high-difficulty cataract surgery is solved.

In certain embodiments, a surgical handpiece system includes a phacoemulsification tip, a fluid management system, an ultrasonic drive system, and a controller. The phacoemulsification tip is attached to a shaft. The fluid management system is configured to manage inflow and outflow of fluid from an ocular surgical site. The ultrasonic drive system is configured to generate torsional and longitudinal vibrations in the phacoemulsification tip. The controller is configured to analyze applied voltage and current to the ultrasonic drive system using Fast Fourier Transforms (FFTs), and tune applied frequencies of the torsional and longitudinal vibrations according to at least one resonant frequency.

The utility model relates to a rotary type ultrasonic emulsification instrument injection and suction handle which comprises an outer shell, a negative pressure pipe is fixed in the outer shell, one end of the negative pressure pipe extends out of the outer shell to be communicated with a negative pressure device, the negative pressure pipe is hinged to a suction pipe, the suction pipe is communicated with an inner cavity of the negative pressure pipe, and the suction pipe is driven by a driving device of the outer shell to rotate. The driving device is used for driving the suction pipe to rotate, the back side area of an incision can be adsorbed by sight lines in the process of sucking and breaking crystalline lenses, meanwhile, the infusion pipe arranged on the outer side of the suction pipe in a sleeving mode is not affected, and the suction pipe is arranged in the outer shell in a sleeving mode. And the expansion degree in the cornea is ensured.

The present disclosure discloses a fluid collection box for phacoemulsification surgery, including a case composed of a front plate, a body, and a rear plate. The case communicates with a waste liquid bag. The body has a perfusion passage and a suction passage that are disposed independently. The perfusion passage is a sealed circulation cavity defined by a cover and the body. The circulation cavity communicates with a first connection port and a second connection port on the body for perfusion. There is a gap between the cover and the body. Connection and disconnection of the perfusion passage is controlled by pressing the cover. The suction passage is a pipeline that communicates a third connection port with the waste liquid bag, and performs perfusion by a peristaltic pump. The suction passage further communicates with a negative pressure regulating loop, to regulate pressure within the suction passage. According to the present disclosure, the perfusion passage and the suction passage are independently disposed, so that the two do not interfere with each other and work independently. Meanwhile, it is ensured that pressure within the perfusion passage is stable, thereby reducing changes of intraocular pressure, and improving safety during use.

The invention provides a cleaning device for an ultrasonic emulsification handle, and belongs to the technical field of ultrasonic emulsification handles, and the cleaning device for the ultrasonic emulsification handle comprises a cleaning pool; the mounting base is fixedly connected to the upper end of the cleaning pool, and a fixing base is arranged on the outer surface of the mounting base, so that efficient, standardized and consistent cleaning is achieved, manual dependence is overcome, three-dimensional dead-corner-free cleaning is achieved for a complex structure, the problem that cleaning is not thorough is solved, meanwhile, the operation safety and the personnel protection level are remarkably improved, and the working efficiency is improved. The contact between an operator and biological pollutants, cleaning liquid droplets and sharp parts of the instrument is isolated to the maximum extent, the risks of occupational exposure and cross infection are effectively reduced, the friendliness and protectiveness of the high-value precision instrument are ensured, the pollutants are efficiently removed, and meanwhile, the safety of the instrument is improved. And scratches to a coating on the surface of an instrument or accidental injuries to a precise structure are effectively prevented.

A system for detecting intraocular pressure events during phacoemulsification surgery having a surgical console, a handpiece having a proximal end being communicatively connected to an irrigation line and an aspiration line; a first sensor in communication with the aspiration line or the irrigation line for providing a first measurement value; and a second sensor in communication with the aspiration line for providing a second measurement value; and wherein at least one characteristic of the irrigation fluid or aspiration fluid in their respective lines is changed in accordance with the difference between the first measurement value and the second measurement value. A system for calibrating patient eye level and wound leakage; detecting occlusion or post occlusion surge; determining BSS usage or remaining in a container; and detecting a fluid line abnormality using a first sensor and a second sensor in different configurations and differences in first and second measurement values.

A system includes a pump, an inlet sensor, an outlet sensor, and a controller. The pump is configured for pumping fluid in a phacoemulsification system. The inlet sensor is coupled with an inlet port of the pump and is configured to sense an inlet temperature of the fluid at the inlet port. The outlet sensor is coupled with an outlet port of the pump and is configured to sense an outlet temperature of the fluid at the outlet port. The controller is configured to take a responsive action based a difference between the inlet temperature and the outlet temperature crossing a defined threshold.

Phacoemulsification apparatus having a phacoemulsification probe that has a needle with a distal tip configured to be inserted into an eye lens, the needle having a lumen. The probe has an actuator configured to vibrate the needle, an aspiration channel, coupled with the lumen and configured to convey an emulsified particle of the lens as aspiration fluid, and an aspiration sensor, coupled with the aspiration channel and configured to measure a vacuum level within the aspiration channel. A microscope is configured to capture an image of the distal tip and of the emulsified particle. A processor is configured to provide an analysis of the image, and, in response to the analysis, when the emulsified particle is in contact with the distal tip for at least a preset time period while the vacuum level is below a predetermined threshold, energize the actuator with a pulse of energy.

An apparatus, system and method for providing a may include at least a phacoemulsification surgical console having a customizable non-linear custom aspiration mode. The console may include at least an aspirator; a foot pedal; and a non-transitory computing code resident on a computing memory associated with a computing processor which, when executed by the processor, causes to be executed the steps of: receiving a percentage actuation of the foot pedal; calculating, including from a non-linear algorithm, a percentage actuation for the aspirator corresponded to the received percentage foot pedal actuation; and dictating the calculated percentage aspirator actuation to the aspirator.

A system for performing ophthalmic treatments includes a surgical microscope configured to capture surface images of an eye of a patient and an imaging device mounted to the surgical microscope and configured to capture section images of the eye of the patient. A controller is coupled to the surgical microscope and the imaging device, the controller configured to receive the surface images and section images and provide feedback facilitating performance of the ophthalmic treatments based on the section images and the surface images. Feedback may relate to avoiding bag rupture during phacoemulsification, safely performing retinal membrane peeling, placing an IOL, treating glaucoma, or performing other ophthalmic treatments.

A phacoemulsification system and a corresponding method are described. The system having a handpiece having a needle and a sleeve at a distal end to emulsify a lens of an eye; an irrigation module configured to supply irrigation fluid into the eye; an aspiration module configured for aspiring eye fluid; a priming cover for fitting over the distal end of the handpiece during a priming process; external pressure sensors coupled with the priming cover; one or more sensors for monitoring at least one of an irrigation pressure and an aspiration pressure; and a processor configured to operate in a priming process. The priming process includes operating the irrigation module to fill the irrigation channel with fluid and remove air bubbles. The one or more processors are configured for obtaining calibration pressure data from the external pressure sensors and for calibrating the sensors of the system.

The present application relates to a kind of intelligent ophthalmic phacoemulsification instrument, belong to medical instrument technical field, to solve the needle and bottle mouth sterile barrier of existing ophthalmic surgery liquid supply equipment in standby state are vulnerable to damage, and the switching delay caused by manual cap / cap is removed.The instrument includes body, solution suspension rod, Y-shaped infusion tube, replacement mechanism and handle.The replacement mechanism includes protection device with embedded rubber plug protection cylinder, and extension linkage structure for automatically opening bottle cap.In work, idle puncture needle is inserted into the rubber plug of protection cylinder and kept sterile wet state;When main infusion bottle is exhausted, motor and electric push rod linkage, drive replacement frame rotation and lifting, in the synchronous use of extension block automatic pull open the pop can of standby bottle, and the puncture needle pulled out from the protection plug is accurately inserted into new bottle.The present application not only realizes the automatic replacement of infusion bottle, ensures that perfusion liquid is in before entering the whole link sterile safety in eye.

A phacoemulsification valve for controlling flow of eye fluid, consisting of an enclosure, a first lumen within the enclosure, having a first and a second termination, a second lumen within the enclosure, intersecting the first lumen, so that the first lumen separates the second lumen into a first and a second section, and a pin, that slides within the first lumen between a first position, wherein the pin prevents transfer of the eye fluid between the first and second sections and a second position, wherein the pin permits transfer of the eye fluid between the first and second sections. The valve also includes a first coil, proximate to the first termination, which when energized transfers the pin between the first and second positions, and a second coil, positioned in proximity to the second termination, which when energized transfers the pin between the second and first positions.

Cataract surgery is in recent years more and more augmented and supported by the application of laser cuts in the eye tissue. Such laser systems are separate units from the phacoemulsification system units that are usually used for cataract extraction. The laser systems require the patient to be positioned under the laser unit and then being moved under the surgical microscope next to the phacoemulsification unit. The here described invention relates to systems combining several aspects of the laser system and the phacoemulsification system. In particular, this invention relates to combining at least some parts of the control system and the housing for both systems and thereby minimizing and optimizing setup time, operating room footprint, patient flow and cost. Furthermore the here disclosed invention relates to integrating the laser system under the surgical microscope and thereby significantly reducing the surgery setup and complexity.

A phacoemulsification device includes a phacoemulsification probe and a processor. The phacoemulsification probe includes a piezoelectric crystal configured to vibrate in response to a drive signal, a needle configured to be inserted into a lens capsule of an eye and to be vibrated by the piezoelectric crystal, and a set of magnetic-field components. The set includes (i) one or more magnetic-field generators configured to generate a magnetic field, and (ii) one or more magnetic-field sensors configured to sense the magnetic field. At least one of the magnetic-field components is coupled to vibrate with the needle and at least one other of the magnetic-field components is isolated from vibration of the needle, thereby causing the magnetic-field sensors to output signals indicative of the vibration. The processor is configured to adaptively adjust a frequency of the drive signal so as to vibrate the needle at a resonant frequency of the piezoelectric crystal.

The present invention discloses an auxiliary analysis model for predicting corneal edema after phacoemulsification surgery for cataracts, which belongs to the field of medical technology. The model uses the best corrected visual acuity (BCVA) before phacoemulsification surgery and the cumulative released energy (CDE) during the phacoemulsification process during the surgery as indicators to construct a nomogram; wherein, the nomogram includes five line segments, each line segment is marked with a fixed scale, and the relative position of each line segment is fixed, and the five line segments are, from top to bottom, BCVA and CDE score line segments, BCVA value line segments, CDE value line segments, BCVA and CDE score total line segments, and corneal edema probability line segments; the prediction model of the present invention can complete relatively accurate predictions using only two common clinical data, has low data requirements for use, is convenient and practical, and has a high accuracy rate, can help ophthalmologists quickly and accurately judge the risk of corneal edema after phacoemulsification surgery, and assist ophthalmologists in making decisions in clinical work.

A system and method for operating a medical probe, the method including driving a tip of the medical probe to cause rotation of the tip (i) in a clockwise trajectory in a plane perpendicular to a longitudinal axis during first time intervals, and (ii) in a counterclockwise trajectory in the plane during second time intervals that are interleaved with the first time intervals.

This application discloses a method for detecting corneal thickness after phacoemulsification cataract surgery based on anterior segment OCT, belonging to the field of image analysis technology. The method includes: dividing the cornea into multiple first regions based on a region growing algorithm and initial corneal thickness data; obtaining second regions based on each first region; obtaining multiple partial boundaries based on the second regions; obtaining fibrotic regions based on each partial boundary; and adjusting the scanning density and refractive index of the second regions based on the fibrotic regions and a scanning density correction coefficient to obtain the final corneal thickness data. This application combines the fibrotic regions and the scanning density correction coefficient to adjust the scanning density and refractive index of the second regions, avoiding the errors of calculations using a uniform refractive index in existing technologies, ultimately achieving accurate measurement of corneal thickness and solving the technical problem that existing OCT detection cannot accurately measure corneal regional thickness.

Apparatus for determining a fluid flow rate in a channel of a phacoemulsification probe, including a first pressure sensor, coupled with fluid in the channel at a first position. A second pressure sensor couples with the fluid in the channel at a second position, at a preset distance from the first position, and the fluid flows from the first to the second position. A processor acquires from the first pressure sensor first indications of a pressure profile of a portion of the fluid passing the first pressure sensor, and acquires from the second pressure sensor second indications of a pressure profile of the fluid passing the second pressure sensor. The processor correlates the first and second indications to determine a time for the fluid portion to travel from the first to the second position, and calculates the fluid flow rate in response to the time and the preset distance.

The present application relates to the technical field of medical data processing, in particular to a cataract ultrasonic emulsification postoperative corneal rehabilitation evaluation system based on deep learning. The system comprises an image acquisition module for acquiring postoperative corneal endothelial cell images of a person; a first abnormality analysis module for extracting abnormal corneal regions in the corneal endothelial cell images; a second abnormality analysis module for screening out suspected mechanical damage regions from the abnormal corneal regions; a region segmentation module for segmenting the suspected mechanical damage regions into suspected damage sub-regions; a region division module for determining the division parameters of the suspected damage sub-regions belonging to mechanical damage; based on the pixel number, area and corresponding division parameters in the suspected damage sub-regions, determining the rehabilitation degree, and dividing the suspected damage sub-regions into mechanical damage regions and hyperglycemia damage regions. The present application improves the accuracy of segmentation of mechanical damage regions and hyperglycemia damage regions.

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.

A phacoemulsification cutting tip, including a rigid tubular portion and a flexible and expandable tip portion located distal to the rigid tubular portion. The flexible and expandable tip portion presents an axial length and an unexpanded radius and is formed such that the axial length shortens while the unexpanded radius increases when differential pressure due to an occlusion of an opening of the flexible tip portion exists.

The utility model provides a nucleus chopping action training tool in cataract ultrasonic emulsification surgery, which comprises a human eye anterior segment environment simulation device, and is characterized by further comprising a first nucleus body and a second nucleus body, the two nucleus bodies are magnetically connected through a first magnetic attraction piece to form a cylindrical simulation nucleus, and a second magnetic attraction piece is arranged between the first nucleus body and the second nucleus body. The cylindrical simulation nucleus is arranged at the position of a simulation human eye nucleus in the human eye anterior segment environment simulation device; one end face of the cylindrical simulation nucleus is an operation face, the other end face of the cylindrical simulation nucleus is a nucleus back face, and at least two grooves used for rotating the cylindrical simulation nucleus are formed in the operation face. Ophthalmologists can be taught to operate normatively during training, and can know whether training actions are accurate or not in time.

The utility model provides a kind of perfusion bottle detection device, for cataract phacoemulsification instrument, perfusion bottle detection device includes support part and detection part, support part is used to place perfusion bottle, and detection part is used to detect the liquid level condition in perfusion bottle;Support part is the cylindrical structure with opening in side face and is surrounded to form a placement area, and perfusion bottle is placed in the placement area;Two sides of support part are all penetrated and are equipped with adjusting slide, two adjusting slides are symmetrically laid out, and detection part includes first detection piece and second detection piece, and first detection piece and second detection piece are respectively located in two adjusting slides and are slidably connected;In addition, first detection piece and second detection piece are connected by support band.

The invention relates to an ophthalmic surgical phacoemulsification device. The device has an elongate housing extending along a longitudinal axis, a tip mounted to the distal end of the elongate housing and aligned with the longitudinal axis, and a sonotrode arranged for actuating the tip. The elongate housing has an interior accommodating the sonotrode such that the sonotrode is positioned so as to actuate the tip. Further, the elongate housing interior is provided with an elongate cavity, proximal to the sonotrode, for removably receiving a reusable driver unit containing a piezoelectric module for driving the sonotrode.