218results about How to "The operation went well" patented technology

A surgical robot system using augmented reality, and a method for controlling same are disclosed. A master interface for a surgical robot, which is mounted on a master robot for controlling a slave robot having robot arms, comprises: an image display unit which displays endoscopic images corresponding to the video signal provided by a surgical endoscope; one or more arm-operating units for controlling the respective robot arms; and an augmented reality implementation unit which generates virtual surgical tool information according to the user operation performed using the arm-operating units, so as to display virtual surgical tools via the image display unit. The master interface displays both actual surgical tools and virtual surgical tools together using augmented reality to enable a surgeon to smoothly perform a surgical operation.

The invention discloses a disposable prepuce cutting anastomat, which is suitable for serving as a prepuce cutting and anastomosis surgical appliance for male having over long prepuces or phimosis. The disposable prepuce cutting anastomat comprises a glans penis cover, a scalpel backup ring, a nail holding seat, a needle cabin, a suturing nail, an annular scalpel, a needle push sheet, a needle cabin sleeve, movable handles, handle connecting pieces, a safety block, a fixed connecting piece, a casing and an adjusting screw rod, wherein the glans penis cover is provided with a glans penis cover body; the back part of the glans penis cover body is provided with a nipple; an internal thread is formed in the nipple; a positioning bump is arranged outside the nipple; the scalpel backup ring and the nail holding seat are arranged in the glans penis cover body (in the front end of the glans penis cover); the needle push sheet is arranged in the needle cabin sleeve; the annular scalpel is arranged in the needle push sheet; the needle cabin is positioned above the needle push sheet; the suturing nail is arranged in the needle cabin; the movable handles are connected to the back end of the needle cabin sleeve; the movable handles, the needle cabin sleeve and the casing are connected together through the handle connecting pieces, the safety block and the fixed connecting piece; the adjusting screw rod is connected with the back nipple of the glans penis cover.

The invention relates to a navigating system and method for an orthopedic operation. The navigating system for the orthopedic operation comprises an orthopedic operation navigating module and an orthopedic operation navigating device, and the orthopedic operation navigating module is installed in the orthopedic operation navigating device. In the orthopedic operation navigating module, a graphic workstation is used for operation of software and comprises a navigation software module and a single-chip microcomputer module. The navigating software module is used for conducting three-dimensional reconstruction on a two-dimensional image, photographed before the operation of a patient, on the skeleton of the operative part and three-dimensional movement information of the shapes, the positions and the movement tracks of the operative part of the patient and an operation instrument, and registration and fusion are conducted on two reconstructed three-dimensional images under the same coordinate system, and a three-dimensional navigating image is obtained; the single-chip microcomputer module has the storage function. According to the navigating system and method for the orthopedic operation, the intelligence degree can be easily improved, the use quality is improved, the maintenance cost is lowered, the service life is prolonged, and the operation can be completed more safely, more accurately and more efficiently.

An ultrasonic surgery apparatus enabling smooth surgery. The ultrasonic apparatus is provided with an ultrasonic chip, a vibration inducing unit which induces ultrasonic vibration to the ultrasonic chip, an aspiration unit which aspirates tissue emulsified by vibration of the ultrasonic chip, a detection unit which detects a clogging condition of the ultrasonic chip, a footswitch, having a pedal, for emitting an output signal which is based on a depression amount or a depression position of the pedal, and a control unit which controls at least one of ultrasonic power and a pulse-duty ratio of the ultrasonic vibration based on the output signal from the footswitch and a detection result obtained by the detection unit.

The invention discloses a prepuce ring-cutter, which consists of tightening device and balan loop, wherein two or more first flutes are set on the external edge of balan loop, which forms first projection, two or more second projections are formed in the tightening device, which mate the first flute, the second flute is formed in the second projection, which mates the first projection to contain drug liquid in the cavity, the drug injecting channel is opened on the tightening device, which connects cavity.

The invention discloses a femoral handle fixed through expansion. The femoral handle comprises a femoral handle upper end, a handle body connected with the femoral handle upper end and a handle head connected with the handle body. The handle body is internally provided with an inner handle hole and a screw hole communicated with inner handle hole, the inner handle hole is internally provided with a push rod, the screw hole is internally provided with a screw connected with the push rod, and one end of the screw is provided with an inner square hole. By the femoral handle which is simple in structural design and convenient and rapid to operate, the problem of troubles brought to operation due to the fact that looseness or breaking apart easily occurs to an existing femoral handle during the operation is solved, so that the operation is more successful, success rate of the operation can be improved, and the femoral handle is more practical.

The invention discloses a straight line cutting anastomat which comprises a nail cabin component, a nail seat abutting component, a component seat support, a locking lever component and a trigger mechanism used for driving the nail seat abutting component to move. The trigger mechanism comprises a pushing block, a cutter bar, an inclined wedge, a screw rod, a transmission nut, a rotary handle and a screw rod fixing seat. The screw rod fixing seat is fixedly connected with the bottom of the component seat support. Two ends of the screw rod respectively and rotationally support on the screw rod fixing seat. The rotary handle is connected with one end of the screw rod in an inserting mode. The cutter bar and the inclined wedge are respectively arranged on the pushing block. The pushing block is installed in the component seat support in a sliding mode. The pushing block is fixedly connected with the transmission nut. A screw nut pair is composed of the transmission nut and the screw rod. According to the straight line cutting anastomat, a traditional pushing type trigger principle is changed and rotary force is changed to pushing force, trigger force is stable so that requirements for a user are greatly reduced, accuracy of trigger is improved, operation risk in the process of an operation is greatly reduced and safety in the process of the whole operation is improved.

The invention discloses a medical surgical instrument cleaning device. The cleaning device comprises a box body, wherein a sound generator is fixedly connected to one side of the bottom part of the inner cavity of the box body, and the position, close to the sound generator, of the bottom part of the inner cavity of the box body is fixedly connected to a central processing unit; a vibration plateis arranged at the bottom part of the inner cavity of a cleaning tank, and the side, close to a power supply box, of the vibration plate is fixedly connected with multiple ultrasonic transducers; theinner walls of the two sides of the inner cavity of the cleaning tank are provided with heating devices respectively; and the middle position of the top part of the inner cavity of the box body is fixedly connected with a lifting device, and a sealing cover device is fixedly connected to the side, away from the box body, of the lifting device. The invention relates to the technical field of medical equipment. According to the medical surgical instrument cleaning device, cleaning, sterilization and disinfection are integrated, all cleaning steps can be completed at one step, secondary pollutioncaused in the transferring process during the cleaning of the equipment is avoided, the smooth operation process is guaranteed, personal safety of people is guaranteed, and unnecessary accidents areavoided.

The invention discloses a device for eye surgery and a use method. The device for the eye surgery comprises a bottom plate, support columns are welded to the two sides of the bottom of the bottom plate, circular holes are formed in the support columns, the inner wall of each circular hole is in threaded connection with a third screw rod, the two ends of each third screw rod extend to the two sidesof the corresponding support column respectively, braking plates are welded to the ends, close to each other, of the two third screw rods, and a mounting plate is welded to the top of the bottom plate. The device is simple in structure, the bottom plate is fixed on an operating table for ophthalmosurgery, a patient rests the head on a supporting plate, a first handle is rotated, when a green lampis lightened, the rotation of the first handle is stopped, at this moment, the head of the patient can be fixed between a first clamping plate and a second clamping plate, and the head of the patientcan be fixed; the situation that the surgery time and effect are influenced due to the continuous movement of the head of the patient can be effectively prevented, a doctor can carry out the surgerywork more smoothly, and the device is convenient to use.

The invention discloses a compound six-in-one bone cutting plate. The compound six-in-one bone cutting plate is composed of eight parts, namely a front fixing nail hole, a side fixing nail hole, a femoral condyle front face measurer, a femoral condyle remote-end chamfering bone cutting groove, a posterior condylar bone cutting groove, a femoral condyle intercondylar bone cutting hole, a femoral condyle remote-end drilled hole and a femoral condyle intercondylar bone cutting observing hole. The eight parts are combined integrally to serve as a manual Knee joint prostheses replacement operating tool. The front fixing nail hole and the side fixing nail hole function in mounting and fixing; the femoral condyle front face measurer functions in measuring the size of the femoral condyle front face bone cut quantity; the femoral condyle remote-end chamfering bone cutting groove functions in guiding a femoral condyle remote-end chamfering bone cutting blade; the posterior condylar bone cutting groove functions in guiding a posterior condylar bone cutting blade; the femoral condyle intercondylar bone cutting hole functioning guiding in femoral condyle intercondylar bone cutting; the femoral condyle remote-end drilled hole functioning in guiding in a femoral condyle remote-end guide pin hole drilling; the femoral condyle intercondylar bone cutting observing hole functioning in observing the femoral condyle intercondylar bone cutting state.

The invention relates to a distracter applied to a renal transplantation operation. The distracter is provided with two handles, two distraction arms, two blocking pieces and a locking piece, wherein one end of each distraction arm is connected with the corresponding handle, and the other end of each distraction arm is connected with the corresponding blocking piece; the two distraction arms are hinged through a first hinging shaft; each blocking piece is provided with an upper blocking piece and a lower blocking piece; the upper blocking pieces are shaped into horizontal surfaces; the lower edges of the lower blocking pieces are overturned to the outer sides; sliding chutes are formed in the outer lateral surfaces of the lower blocking pieces, and first sliding teeth are arranged on the two sidewalls of the sliding chutes; the blocking pieces are regulated to be embedded into the sliding chutes through second sliding teeth on the two sides of the blocking pieces, and can move in the sliding chutes; the distraction arms are movably connected with the blocking pieces through second hinging shafts. The distracter is adjustable in distraction depth, and can be applied to fat and thin patients, and the operation field is fully exposed; the blocking pieces can rotate, so that the distracter is higher in flexibility; the locking piece is firmer; the whole distracter has the advantages of high practicability, simple structure and convenience in operate, and is suitable for clinical popularization and application.

The invention discloses a multifunctional cutting and sucking knife for an endoscope. The multifunctional cutting and sucking knife combines an aspirator and an electrotome into a whole. When the surface of a wound has a bleeding phenomenon, the surface of the wound can be rinsed and sucked in time, tool replacement is not needed, therefore, operation time is saved, and the amount of bleeding is reduced. The multifunctional cutting and sucking knife comprises the electrotome and a suction pipeline, wherein the front end of the suction pipeline is provided with an opening in a beveling mode. One end of the electrotome extends from the opening by 2-3mm. The other of the electrotome is connected to a power supply through an electrode wire. The width of the electrotome is equal to the inner diameter of the suction pipeline. The rear end of the suction pipeline is provided with a suction opening and a water inlet. The suction opening is connected with a suction device, and the water inlet is connected with a rinsing device. The suction device is controlled by a suction button on the suction pipeline, and the rinsing device is controlled by a rinsing button on the suction pipeline. All mist generated by the electrotome falls in a suction region of the suction pipeline.

The invention discloses a method to make asparagus saponin that includes the process of smashing raw material, adding 2-10times alcohol, heating to 50-100 degree centigrade, extracting for 1-10 hours, filtering, concentrating, adding precipitator, centrifuging, cooling, and drying to gain raw powder, separating and purifying the raw powder to gain refined asparagus saponin. The invention has common material, easy manufacture technology, and could be used to make anticancer health care medicine or health care food.

The invention provides a medical bone cement directional automatic push injection device. The device comprises a linear pushing mechanism, a guiding mechanism and a bracket; the linear pushing mechanism comprises a linear motor, a bone cement push rod and a bone cement sleeve which are arranged vertically from top to bottom in sequence, wherein the bone cement push rod stretches into the bone cement sleeve, and the linear motor is fixed on the bracket; the guiding mechanism comprises a supporting shaft and a first fixing clip, a second fixing clip and a third fixing clip which sleeve the supporting shaft from top to bottom in sequence, wherein the top end of the supporting shaft is fixed on the bracket, the first fixing clip can slide vertically along the supporting shaft, and the second fixing clip and the third fixing clip are vertically limited on the supporting shaft; a motor push rod of the linear motor stretches downward and is fixedly connected with the first fixing clip, the top end of the bone cement push rod is clamped and fixed by the first fixing clip, the top end of the bone cement sleeve is clamped and fixed by the second fixing clip, and the middle section of the bone cement sleeve passes through the third fixing clip. The medical bone cement directional automatic push injection device is high in injection stability, can be remotely controlled, and is safe and reliable.

The invention discloses a surgical auxiliary device for lung cancer used in medical oncology, which comprises a fixed seat, an adjusting assembly, a restraining assembly, a wound supporting assembly,a cleaning and drainage assembly, a control device and a power supply. The fixing seat comprises a first clamping table, a second clamping table and a fastening rod. The adjusting assembly comprises atelescopic column and a telescopic cross beam. The restraining assembly comprises an adjusting arm, an adjusting rod and an arc-shaped splint. The wound supporting assembly comprises an inner tube, an adjusting sleeve, an expansion sheet, a connecting rod. The cleaning and drainage assembly comprises a cleaning device, a drainage device and an operation piece. The control device comprises a controller, a processor and a remote controller, wherein the controller is connected with a telescopic column and a telescopic beam, and the processor and the remote controller are connected with the controller. The power supply is provided by the telescopic column, the telescopic beam and the regulating rod. The invention has the advantages of high safety performance, flexible and convenient operation, and is suitable for a large number of popularization.

The invention discloses a laparoscope for anti-fogging surgery. The laparoscope comprises a laparoscope body, a cleaning sleeve and a stretchable driving device. The cleaning sleeve comprises a sleeveand a cleaning brush, the inner sleeve wall of the sleeve slidably sleeves the peripheral face of the laparoscope body, a containing cavity is formed in the inner sleeve wall of the end, corresponding to the end of the laparoscope body, of the sleeve, and the containing cavity is in an annular shape coaxially communicated with the inner sleeve wall of the sleeve; the cleaning brush comprises a plurality of bristles, and the multiple bristles are evenly and annularly arranged at the inner wall of the containing cavity and extends to the center of the containing cavity; the stretchable drivingdevice comprises an elastic connecting piece and an annular permanent magnet and an electromagnet which are coaxially arranged at the two ends of the elastic connecting piece; one of the permanent magnet and the electromagnet is connected to the end, away from the containing cavity, of the sleeve and is in movable fit with the laparoscope body, and the other one of the permanent magnet and the electromagnet is connected to the peripheral face of the end away from the laparoscope body. By adopting the laparoscope for the anti-fogging surgery of the structure, it is ensured that laparoscope surgery is performed rapidly and smoothly, and the treatment effect is ensured.

The invention discloses an assembly type skin retractor and belongs to surgical operating instruments. The assembly type skin retractor comprises an arc handle and a plurality of retractors connected with the handle, wherein a slide groove is arranged on the handle from bottom to top from the lower surface of the handle, two positioning strips are arranged on two lateral walls in the slide groove along the arc surface direction, and a plurality of clamping openings are arranged on the upper surfaces of the positioning strips. Positioning blocks sliding on the positioning strips are arranged at the upper ends of the retractors, and positioning protrusions capable of being clamped in the clamping openings are arranged on the two sides of the lower ends of the positioning blocks. The assembly type skin retractor is novel and flexible in structural design. The retractors with corresponding quantity can be installed according to patient needs and operation situations, burden of assistants is reduced, and only one assistant is needed. Additionally, optimal traction force is ensured, constant tension is kept, quick and continuous operations can be ensured, and possibility of complication is reduced.

The invention discloses a restoring titanium mesh. The restoring titanium mesh is used for remedying bone defects in a knee joint replacement surgery. The restoring titanium mesh (1) comprises horizontal ridge belts (2) for implanting the restoring titanium mesh into a human body and vertical ridge belts (3) for supporting the horizontal ridge belts (2). The horizontal ridge belts (2) and the vertical ridge belts (3) are intersected and combined to form a meshy restoring titanium mesh (1). According to the restoring titanium mesh, the meshy structure of the restoring titanium mesh can ensure the bone ingrowth of a patient and can be cut to provide a good matching rate for the patient so as to meet the requirements of the patient and can well ensure the bone ingrowth of the patient to be favorable for the later recovery of the patient, devices which are used in a matching mode are less, the operation time is reduced, the usage of intervention materials is reduced, the weight is reduced to be favorable for restoration of a defect portion of the bone, and the restoring titanium mesh is not only replacement of a prosthesis, can deal with cases under various special circumstances and is favorable for performing the operation smoothly.

The invention discloses a medical femoral head taking device. The medical femoral head taking device comprises a sleeve and a head taking device. The sleeve is hollow, and sharp teeth are arranged at one end of the sleeve. A handle is arranged at one end of the head taking device, a connecting rod is connected to the handle, and a self-tapping threaded head is arranged at one end of the connecting rod. The head taking device can penetrate through the hollow structure of the sleeve. The medical femoral head taking device is simple in structure, convenient to operate, and capable of effectively reducing the femoral head taking difficulty, operation time is shortened, and it is guaranteed that operations are smoothly performed.

The invention provides a medical mirror surface antifogging liquid and a preparation method thereof, a medical mirror surface antifogging film and a preparation method thereof, an antifogging method and a medical instrument, and relates to the technical field of mirror surface antifogging. The medical mirror surface antifogging liquid is prepared from an active agent, a sustained-release agent, atoughening agent and water in specific dosages, wherein a biological extracting agent and ethanol are compounded to be used as the toughening agent; polyhydric alcohol is used as the sustained-releaseagent and has a synergistic effect with other components such as the active agent, the prepared medical mirror surface anti-fog liquid has no stimulation effect on a human body and has an excellent anti-fog effect and lasting time, an anti-fog film formed on a medical mirror surface has good toughness, light transmission and anti-fog effect, and the requirements of most clinical operations can bemet. Various raw materials of the medical mirror surface anti-fog liquid are easy to obtain, the production cost is low, and application and popularization are facilitated. The invention further provides the medical mirror surface anti-fog film, the preparation method thereof and an anti-fog method.

The invention discloses a method to make asparagus saponin that includes the process of smashing raw material, adding 2-10times alcohol, heating to 50-100 degree centigrade, extracting for 1-10 hours, filtering, concentrating, adding precipitator, centrifuging, cooling, and drying to gain raw powder, separating and purifying the raw powder to gain refined asparagus saponin. The invention has common material, easy manufacture technology, and could be used to make anticancer health care medicine or health care food.

The invention discloses a puncture cannula used for laparoscopic operation and capable of preventing abdominal viscus puncture injury. The puncture cannula comprises a veress needle, a cutting puncture blade, a puncture pipe core, a puncture outer cannula, an integrated holding lug and a pipe core base, the veress needle, the puncture blade, the puncture pipe core and the puncture outer cannula are sequentially arranged from inside to outside, the veress needle comprises a veress puncture needle head, a puncture handle, a gas port valve and a gas port, the gas port valve and the veress puncture needle head are mounted vertically, the gas port and the veress puncture needle head are mounted vertically, a semicircular pipe core head is arranged at the top end of the puncture pipe core, the cutting puncture blade is arranged in the semicircular pipe core head, the other end of the puncture pipe core is connected with the pipe core base through a spring, the integrated holding lug is arranged between the puncture pipe core and the pipe core base, and an outer cannula antiskid thread is arranged on the puncture outer cannula. By the puncture cannula, puncture injury is reduced, protection of viscera of a patient during operation is facilitated, operating safety coefficient is increased, and leakage during operation is reduced.

The invention discloses an auxiliary device for a cardiovascular operation. The auxiliary device for the cardiovascular operation comprises a base, wherein a lifting unit is fixedly mounted on one side of the upper part of the base; a adjusting unit is mounted at the upper end of the lifting unit; a magnifying lens is mounted at one end, far away from the lifting unit, of the adjusting unit through a hinging component. The auxiliary device for the cardiovascular operation can assist a cardiovascular internal medical operation doctor to clearly view the cardiovascular distribution of a patientand the position of a cardiovascular lesion from different angles to ensure that the doctor can accurately perform the operation at the position of the lesion of the patient so as to reduce the risksof the operation, guarantee the smooth progression of the operation and increase the success rate of the operation; the auxiliary device for the cardiovascular operation is relatively strong in operating flexibility, convenient to use and relatively good in applicability, can be used by matching with operating beds with different sizes, is convenient for the doctor to operate an ascending switch and a descending switch through the sole of a foot so as to control rise and fall of the magnifying lens, can liberate the hands of the doctor, and can avoid influence on the operation on the patient by the doctor.

The invention discloses a tibial tunnel pass thread dragging, pushing and pulling device special for orthopedic surgery. The device comprises a stretching-in pipe capable of penetrating through a tibial tunnel in adaptive mode. A movable push-pull rod is arranged in the pipe in a matched mode. The bending radian of the front working end of the movable push-pull rod can deform after force is borne and be automatically and elastically restored. When the device penetrates through the tunnel, the front end of the device can be sent to a position of which the height is 1-2 cm higher than the tunnel plane, a dragged thread is convenient to grasp or push out, the front end of the movable push-pull rod can be customized according to different thread pushing and dragging functions, and the bending radian of the movable push-pull rod can be customized to meet different strength requirements. Medical staff can more conveniently drag, push and eject the pass thread passing through the tibial tunnel, the push-pull rod can be rapidly replaced according to different surgical requirements, a doctor can conveniently perform surgical operation, pain of a patient is relieved, and the success rate of the surgery is increased.

The invention discloses a multi-position adjustable device for a pediatric surgical operation, which includes a device body, a telescopic support balloon, a maintenance frame, and an image player; wherein the maintenance frame is installed in the center of the top of the base; the device body is installed in the maintenance frame, and the telescopic support balloon is installed in one end of the inside of the device body; the top ends of the two sides of the maintenance frame are hinged to a link bar, and one end of the link bar, away from the maintenance frame is hinged to the image player. The multi-position adjustable device for the pediatric surgical operation is characterized in that by installing a driving motor and the maintenance frame, the maintenance frame is driven by the driving motor to rotate and the device body is further driven to rotate, and therefore doctors can randomly adjust the direction of the device body according to the affected part of children and working efficiency of medical staff is improved; and by installing the link bar and the image player, the image player is utilized to make the pediatric children calm down when the pediatric children are operated, and therefore the successful operation is ensured.

The invention discloses a circumcision device. The circumcision device includes a fastening device and a glans ferrule, wherein: the fastening device has an opening, and the two ends of the opening are provided with mutually corresponding upper half knife-edge joints At the joint with the lower half of the knife edge, the edges of the joint of the upper half of the knife edge and the joint of the lower half of the knife edge are provided with rounded corners. Because the joint of the two halves of the fixed ring of the existing circumcision device is a right-angle structure, when the two halves are combined to tighten the penis, the joint of the two halves of the circumcision can easily clamp the foreskin, which makes the patient very painful. The rounded structure of the present invention can avoid clamping the foreskin during the operation, make the operation more smoothly, and avoid the pain of the patient.

The invention discloses a multifunctional medical negative-pressure drainage device. The multifunctional medical negative-pressure drainage device comprises a miniature negative-pressure pump, a wasteliquid collecting tank and an alcohol tank and is characterized in that a first negative-pressure pipe and a second negative-pressure pipe are connected to the miniature negative-pressure pump, the first negative-pressure pipe is connected with a liquid drainage bottle, and the second negative-pressure pipe is connected to a gas drainage bottle; the wall of a U-shaped pipe is provided with a slide cavity and a barrier cavity, slide rails are symmetrically arranged in the slide cavity, the wall of the U-shaped pipe is provided with a communication opening, a squeezing plate is fixedly connected to a rubber piston block through a connecting rod, springs are symmetrically arranged on two sides of the squeezing plate, and one ends, away from the squeezing plate, of the springs are fixed to the U-shaped pipe. The multifunctional medical negative-pressure drainage device has the advantages that various substances such as blood and smoke can be constantly drained, frequent drainage bottle changing is not needed, the trouble caused by single drainage substance is avoided, multiple drainage bottles can be cleaned only by pressing the squeezing plate, disassembling and reassembling are notneeded, and use convenience is achieved.

The invention discloses a surgical pillow for thyroid diseases. The surgical pillow comprises a back pillow, a headrest and a fixing base, wherein the upper end of the fixing base is provided with a notch, the inner bottom end of the fixing base is fixedly installed with a lifting mechanism, the lifting mechanism comprises a motor, the motor is fixedly installed on one side of the outer wall of the fixing base by a bolt, a power output end of the motor penetrates the fixing base and is fixedly connected with a threaded screw, the surface of the outer wall of the threaded screw is provided withleft-handed threads and right-handed threads, the left-handed threads are located at one ends of the right-hand threads, and threaded sliding sleeves are installed outside the left-hand threads and the right-hand threads in a slide manner respectively. Through the installed lifting mechanism, the adjustment can be performed according to the actual height of a patient, so that the headrest can reach the best position, and thereby not only the comfort of the patient can be improved, but also a height of the headrest can be adjusted conveniently and quickly to thereby adjust a height of the headand neck to adapt to operations of different operations and examinations.

The invention provides a dilator and pertains to the technical filed of medical equipment. The dilator of the invention solves the problem that the existing dilator can not directly remove air existing after the operation or in the vagina. The dilator comprises a dilation part 1 and a dilation part 2 which are all bended, wherein, a bended part of the dilation part 2 is articulated with a bended part of the dilation part 1; the dilation part 1 is provided with a handle section 1 and an operation section 1 while the dilation part 2 is provided with a handle section 2 and an operation section 2; the operation section 1 and the operation section 2 after being attached with each other can form a hollow cavity; a viewing port is arranged on the handle section 2 and the hollow cavity is internally provided with an air conduit one section of which is fixedly connected with the operation section 1 or the operation section 2 and the other section of which runs through the viewing port. The dilator is formed by articulating two dilation parts and the air existing after operations or in the vagina can be directly and smoothly exhausted out of the body through the air conduit arranged on the operation section, thus the dilator of the invention has simple structure, sanitary use and can also save time and labor.

The invention discloses a patient viewing angle ophthalmic operation simulation method based on a virtual reality technique. Feelings for a TPRK (transepithelial photorefractive keratectomy) corneal refractive operation and a corneal pterygium operation are simulated from a patient viewing angle in an ophthalmic operation, so that a patient preoperatively knows operation processes and sensual experience in the operation, the method helps the patient to effectively match with a doctor in the operation, an operation process is smoother, tension feelings of the patient are eliminate, intra-operative experience of the patient is improved, postoperative satisfaction of the patient is improved, understanding and familiarizing of the patient can relieve operation difficulty form a doctor angle, and the method fills in the blank of application of the virtual reality technique to medical aspects based on the patient angle.