366results about How to "Improve the quality of surgery" patented technology

The invention discloses an electric anastomat for a surgical department, comprising an osculating part and a driving device for driving an execution mechanism, wherein the osculating part is provided with a nail supporting seat, a nail bin and the execution mechanism; the driving device is an electric driving device which comprises a power supply, a control panel, a closed driving unit and a percussion driving unit; the closed driving unit consists of a closed motor and a closed driving mechanism; the input end of the closed driving mechanism is connected with the closed motor; the output end of the closed driving mechanism is connected with the execution mechanism of the osculating part; the percussion driving unit consists of a percussion motor and a percussion driving mechanism; the input end of the percussion driving mechanism is connected with the percussion motor; the output end of the percussion driving mechanism is connected with the execution mechanism of the osculating part; the closed motor and the percussion motor are respectively connected with the control panel through leads; and the control panel is connected with the power supply through a lead. According to the electric anastomat disclosed by the invention, the quality of an operation can be improved, the operation difficulty of doctors is reduced and the automatic operation can be realized.

The invention relates to a master-slave teleoperation vascular intervention surgical robot which comprises a master control mechanism, a slave propulsion mechanism and a PMAC (Programmable Multi-Axis Controller); the master control mechanism serves as the operating end for a doctor; the slave propulsion mechanism serves as an actuating mechanism of the robot, and used in an operating room for replacing the doctor to hold a catheter for completing the motion function of the catheter; and the PMAC is used for realizing information transfer between the master control mechanism and the slave propulsion mechanism, so that the slave catheter propulsion mechanism moves according to the motion information of the master control mechanism. The master-slave teleoperation vascular intervention surgical robot has the advantages that the master-slave teleoperation method is adopted for assisting the doctor to perform the operation, the slave propulsion mechanism realizes the axial feeding and circumferential rotation motion of the catheter, and is used in the operating room for replacing the doctor to hold the catheter, so that the doctor is free from the operating room, and outside the operating room without ray radiation, the master control mechanism realizes the teleoperation of the catheter propulsion mechanism to avoid the doctor from ray radiation; and the operation is stable and reliable, the operation accuracy is high, and the operation quality is favorably improved.

The invention provides a follow-up type nasal endoscope operation auxiliary robot. The follow-up type nasal endoscope operation auxiliary robot comprises a guide rail adapter fitted to guide rails of different operation beds, an automatic lifting mechanism which is connected to the guide rail adapter and is lifted in the direction perpendicular to the operation beds, an automatic stretching mechanism which is connected to the tail end of the automatic lifting mechanism and stretches in a plane parallel to the operation beds, a two-degree-of-freedom RCM mechanism connected to the tail end of the automatic stretching mechanism, an automatic tail end adjusting mechanism which is connected to the tail end of the RCM mechanism and drives a nasal endoscope to conduct depth feeding and angle compensation and a controller which controls the automatic lifting mechanism, the automatic stretching mechanism, the RCM mechanism and the automatic tail end adjusting mechanism to move. A doctor is replaced with the robot in an operation to hold the nasal endoscope, appropriate adjustment in good time is carried out along with an operation instrument, the left hand of the doctor is liberated, picture swing occurring in the operation is overcome, the labor intensity of the doctor is reduced, and complications are reduced.

A compound vibrating supersonic bone surgery instrument, including handle, operating knife and main machine, and inside the shell of the handle includes: transfer the signal emitted by supersonic signal generator to supersonic mechanical waves of energy converter, deliver the supersonic mechanical waves emitted by energy converter after amplitude magnification to amplitude changing pole of surgery knife to make the surgery knife vibrate longitudinally at supersonic frequency; install in the back end of the handle, and the energy converter and amplitude changing pole are rotated or swayed by driving motor; install on the clutch between the said driving motor and energy converter to deliver the supersonic signal emitted by supersonic signal generator to electric slip-ring of energy converter; cross the center bore of electric slip-ring and deliver the rotating and swaying movement of driving motor to the clutch of energy converter. The invention installs driving motor at the base of the energy converter, accomplishing compound supersonic vibration; accomplishing cold cutting; avoiding the broken of surgery knives as a result of the concentration of stress.

The invention discloses a supervoxel sequence lung image 3D pulmonary nodule segmentation method based on multimodal data. The method comprises the following steps: A) extracting sequence lung parenchyma images through superpixel segmentation and self-generating neuronal forest clustering; B) registering the sequence lung parenchyma images through PET / CT multimodal data based on mutual information; C) marking and extracting an accurate sequence pulmonary nodule region through a multi-scale variable circular template matching algorithm; and D) carrying out three-dimensional reconstruction on the sequence pulmonary nodule images through a supervoxel 3D region growth algorithm to obtain a final three-dimensional shape of pulmonary nodules. The method forms a 3D reconstruction area of the pulmonary nodules through the supervoxel 3D region growth algorithm, and can reflect dynamic relation between pulmonary lesions and surrounding tissues, so that features of shape, size and appearance of the pulmonary nodules as well as adhesion conditions of the pulmonary nodules with surrounding pleura or blood vessels can be known visually.

The invention discloses a three-dimensional mesh skeleton model averaging method oriented to bone plate design. In the method, a series of 'averaging' three-dimensional mesh skeleton models can be obtained from a large number of skeleton data and provide basis for seriation design of the bone plates. The three-dimensional mesh skeleton model averaging method includes the following steps: performing rigid body registration on three-dimensional mesh skeleton models; selecting one three-dimensional skeleton model as a template skeleton, and performing non-rigid registration on the template skeleton with other skeletons; further performing mesh deformation on the basis of a Laplacian coordinate on the template skeleton; replacing all the deformed template skeletons for the skeletons; performing principal component analysis and clustering analysis on the processed skeletons; calculating averageness of each type of skeletons. A three-dimensional processing technology is applied to processing and analyzing of the three-dimensional mesh skeleton models, the bone plates made of average skeletons can be better fitted with the fractured bones, surgical time can be shortened, surgical quality can be improved, and injures of surgery to patients can be alleviated.

The invention discloses a serial bone plate design method based on an average thighbone model. The design method includes the steps of 1 building the average thighbone model, wherein parameters are defined, a constraint relation of the parameters is set up, and a multivariate statistics mathematic model is set up; 2 parameterizing characteristics of a bone plate, wherein the characteristics of the bone plate are generated, the characteristic parameters of the bone plate are defined in a layered mode, and the characteristics of the bone plate are compiled progressively; 3 designing the bone plate serially, wherein a mapping relation between the characteristic parameters of the bone plate and curved surface morphological parameters of the average thighbone model is set up, and serial bone plate design is achieved by modifying the parameters. A scientific basis is provided for reasonable and serial bone plate design in the field of computer-assisted orthopedic operations, and the serial bone plate design method is of great significance in improving the bone plate design quality and shortening design time.

The invention discloses a lower limb traction device for an intramedullary nail surgery. The lower limb traction device includes a bottom beam, a shank support plate, a thigh backup plate, a sliding block, a traction needle, a traction bow and a pulling mechanism, the sliding block is installed on an axial sliding channel on the bottom beam and provided with sliding block locking screws, the shanksupport plate and the thigh backup plate are hinged in a Chinese character 'ren' shape, the lower end of the thigh backup plate is rotatably connected with the head end of the bottom beam, the lowerend of the shank support plate is rotatably connected with the sliding block, thighs and shanks of a patient respectively abut against the upper part of the thigh backup plate and the upper part of the shank support plate, the traction needle penetrates through the far-end of an anklebone or a shin bone of the patient and is connected between the two ends of the traction bow, and the bow back of the traction bow is connected with the tail end of the bottom beam through the pulling mechanism. According to the lower limb traction device, the patient can be kept in the state of curved leg, reliable traction of the shin bone of the patient can be achieved, all parts are not higher than lower limbs of the patient, and surgery operation is not affected; and according to the lower limb traction device, smooth operation of the intramedullary nail implantation surgery of a thigh bone and the shin bone can be ensured, and the surgical quality and the surgical efficiency are improved.

A universal vertebral body reduction device for orthopedic vertebral column surgery comprises a first reduction bar and a second reduction bar. The first reduction bar and the second reduction bar are connected via a connecting device, a first universal joint is fixedly welded or sleeved on the first reduction bar, and a second universal joint is fixedly welded or sleeved on the second reduction bar; one end of the connecting device is fixedly welded or inserted in the first universal joint, and the other end of the connecting device is adjustably connected into the second universal joint via a fastening device; and bottom ends of the first reduction bar and the second reduction bar are respectively fixedly connected with a first clamping device and a second clamping device which are used for being connected with an orthopedic internal fixing apparatus. The universal vertebral body reduction device is a surgical instrument which is simple and labor-saving in operation, fast and reliable in temporary fixation, and sophisticated and accurate in surgical reduction, and can meet orthopedic clinical requirements of temporary fixation and surgical reduction between bone fracture sections.

The invention discloses a cooperative interaction control system for a craniotomy robot. The cooperative interaction control system comprises a motion limiting module, a doctor-robot interaction module, a robot-patient interaction module and a solver. The motion limiting module is used for tracking the position of the robot in real time and is compared with a limited area, so that the robot is limited within a certain area for movement. The doctor-robot interaction module is used for completing real-time speed control over the robot by doctors. In the skull milling process, the robot-patient interaction module is used for keeping a certain contact force between the tail end of a milling cutter and the bottom face of a skull and further keeping a certain drilling force in the skull drilling process. The solver is used for completing inverse kinematics resolving of the robot and further used for inputting and outputting robot motion and joint motion speeds separately so as to drive the robot to move. According to the cooperative interaction control system, the advantages that the flexibility of the doctors is high and the precision of the robot is high are integrated, operation efficiency and quality can be improved while operation safety is improved, and the craniotomy fatigue degree of the doctors is lowered.

The invention discloses a sealing device for a minimally invasive disposable puncture device, and relates to the sealing device matched with the minimally invasive disposable puncture device for use. The sealing device is a surgical instrument which is matched with minimally invasive endoscopy and suitable for laparoscopy and establishment of abdominal cavity operation working channels in the surgery process. The sealing device comprises a locking and fixing cover, an elastic sealing ring assembly, a compaction ring and a positioning guide cover; the upper end of the locking and fixing cover is provided with an installation platform which is provided with a plurality of positioning pillars; the elastic sealing ring assembly comprises an elastic sealing ring, elastic cloth, an upper fixing ring and a lower fixing ring; the elastic cloth is adhered to two sides of the elastic sealing ring; the upper fixing ring is fixed with lower fixing ring installation holes; the lower fixing ring is provided with sealing ring positioning protruded pillars; the upper fixing ring and the lower fixing ring are arranged on two sides of the elastic sealing ring to which the elastic cloth is adhered respectively; the elastic sealing ring assembly is arranged on the installation platform at the upper end of the locking and fixing cover; and the positioning guide cover is fixed on the upper part of the compaction ring through welding.

The invention discloses a remote control system of an auxiliary device for vascular interventional surgery stimulating the operation of doctors. The system comprises a feeding motion device and a twisting motion device, wherein the feeding motion device performs rectilinear motion under pulling, which is used for sending rectilinear motion information to an end effector; the twisting motion deviceis fixed on the feeding motion device, and the twisting motion device performs rotational motion under twisting motion and sends rotational motion information to the end effector. According to the remote control system, by adopting a remote control operation method, the doctors can be protected from X-ray radiation, and health of the doctors can be guaranteed; at the same time, the doctors can perform operation across regions. As the end effector is controlled to perform rectilinear push and twisting rotational push on catheters / guide wires through the pulling and twisting operation methods,which is the same as the original manual operation habits of doctors, the remote control system is beneficial to the improvement of operation quality.

The invention discloses a closed loop muscle relaxation iatrical effect monitoring and injecting method and a closed loop muscle relaxation injecting device. The method comprises the specific steps of: acquiring muscle myoelectricity feedback actions of a patient through an independently developed muscle relaxation monitoring piezoelectric inductor and operating to obtain a muscle relaxation monitoring data TOF (turnover of frequency) value; and controlling a stepper motor to operate at a specified speed so as to push an injector to administrate medicine at a set speed by using the TOF value as a feedback data base and by a microprocessor by combining a built-in muscle relaxation administration method. The scheme can monitor the muscle relaxation state of a patient in real time, objectively reflect the true iatrical effect condition of the muscle relaxant in the human body and display the TOF value of a muscle relaxation feedback value, and meanwhile, an injection system can automatically administrate the muscle relaxant in the whole course according to the TOF value. Moreover, artificial interventions are not needed, and the automatic administrated dosage and the method are obtained through a large quantity of population parameters. The invention ends the times of fuzzy muscle relaxant administration and can scientifically improve the controllability of the muscle relaxant, avoid medicine deficiency or excess and improve the operation quality.

The invention relates to the field of medical instruments and discloses an integrated bone cement injection device which comprises a needle cylinder, a push-pull assembly and a stirring assembly. The front end of the needle cylinder is detachably connected with a plug assembly achieving a closing effect. The rear end of the needle cylinder is detachably connected with a handheld grip assembly. The push-pull assembly comprises a push-pull rod, a push-pull handle and a piston with a sealing ring. The stirring assembly comprises a stirring rod, a stirring handle and a stirring piece. A stirring assembly and a push-pull assembly are arranged at two ends of the needle cylinder, stirring and push-pull injection action can be finished within one needle cylinder, injection can be conducted by installing a puncture device after stirring, the shortcoming that bone cement falling on the outside generates pungent odor and reproduction of bone cement causes waste, the operation time is reduced, the burden of doctors is reduced, a doctor can finish various operations in a surgery easily, accidents in the surgery are reduced, and the surgery quality can be improved.

The invention discloses a characteristic parameter based bone fracture plate serial design method. The method is characterized by comprising a first step of parameterizing a bone model; a second step of parameterizing a fitting surface of a bone fracture plate; and a third step of establishing a mapping relation between a bone characteristic model and the characteristic of the fitting surface of the bone fracture plate so as to generate a series of fitting surfaces of the bone fracture plate according to bone models of different parameters. In the first step, a bone curved surface model is established based on an average point cloud model including statistic information, and parametric representation is performed on the bone curved surface model so as to generate the bone characteristic model. In the second step, the fitting surface of the bone fracture plate is reconstructed with a characteristic line as the center, and parameter configuration is performed on the fitting surface of the bone fracture plate so as to generate the characteristic of the fitting surface. According to the method, multiple types of serial bone fracture plates suitable for bones of patients can be rapidly designed, number of times of adjusting of the bone fracture plate in operation is reduced, and the method has significance for improvement of quality and efficiency of the bone fracture plate design.

The invention relates to an operating table, comprising a bed surface of an operating table, which is spliced by section-type bed boards. The bed surface of the operating table comprises a head section, a back section, a hip section and a foot section, wherein, the back section and the foot section are respectively connected with two ends of the hip section through a rotating joint; the bed board at the foot section is divided into two sections, and can rotate upwards to form an included angle less than 135 degrees with the bed board of the hip section; and one section of the bed board is disconnected to shorten the foot section connected with the hip section so as to support the gliding weight of a patient at a specific operational position, thus being convenient for doctors to adjust the angle of the thigh and hip of the patient in an operation.

The invention discloses a multi-DoF (Degree of Freedom) surgical instrument for minimally-invasive surgery. The multi-DoF surgical instrument comprises a handheld part, a power drive part, a thin connecting rod, a tail end execution part and a control system, wherein the power drive part is fixedly connected with the handheld part, the thin connecting rod is fixedly connected with the power drive part, the tail end execution part is connected with the thin connecting rod, and the control system controls the motion of the power drive part; both the handheld part and the power drive part are connected with the control system through lines, encoders at joints can be driven to move through the motion of the handheld part and acquire motion information of corresponding joints, then, the motion information is fed back to the control system, and the power drive part receives signals from the control system and then drives the tail end execution part to complete pitching, deflecting and gripping action. The multi-DoF surgical instrument has four degrees of freedom, namely pitching, deflecting, gripping and revolving and has relatively high dexterity degree, the quality of surgery can be effectively improved, the efficiency of surgery can be effectively increased, and the structure is small and compact.

The invention discloses a clamping force control oriented method for measuring the jaw clamping force of atraumatic hemostatic forceps. The method comprises the following steps: 1, preparing a check bar to be detected; 2, determining the relationship between the jaw gap and the engagement number of buckles at the tail end of a forceps handle; 3, primarily adjusting the jaw positioning and force measuring mechanism of an atraumatic hemostatic forceps jaw clamping force measurement device; 4, adjusting a jaw hinge hole positioning mechanism of the measuring device and positioning the jaw hinge hole; and 5, adjusting a finger ring force application and positioning mechanism of the measuring device, fine tuning the jaw positioning and force measuring mechanism of the measuring device, and reading positive pressure data of the jaw. By adopting the method, the jaw clamping force of the mature atraumatic hemostatic forceps of various types can be accurately measured, and the measurement dataare provided to clinical doctors, so that the doctors can reasonably control the jaw clamping force of the atraumatic hemostatic forceps in surgery.

The invention provides a circumcise anastomat which comprises a U-shaped seat, a knob and a shell. The circumcise anastomat further comprises a locking block and an elastic component. The locking block is rotatably mounted on the shell, the elastic component is fixedly mounted on the shell, a protrusion is arranged on the U-shaped seat, and pushes the locking block to rotate to compress the elastic component for energy storage, and the compressed elastic component pushes the protrusion through the locking block to enable the U-shaped seat to move towards the knob. The movement of manually pushing the U-shaped seat is omitted, the hands of an operator can be freed up to adjust tissue and instruments, and operation efficiency and quality are improved.

The invention relates to the technical field of machine learning and to a method for predicting a heparin dosage in a continuous renal replacement therapy (CRPT) process, comprising the following steps: (1) installing relevant software and libraries; (2) analyzing and understanding the relevant information of a data set collected by a hospital; (3) preprocessing data; (4) extracting features, (5)determining a training set and a test set and processing unbalanced data; (6) predicting and evaluating a model; and (7) processing the abnormal values of predicted values. The method predicts the heparin dosage in the CRRT process by using a machine learning algorithm such as a gradient boosting regression model, and can give a reasonable and reliable heparin dosage reference value in the CRRT process by further processing the predicted value according to the trained model, thereby assisting the doctors, improving surgery quality, and achieving good economical efficiency and reliability.

The invention relates to an inferior tibiofibular bolt elastic fixing device, which comprises an elastic rod, cones arranged at both ends of the elastic rod, a connecting rod and a nut, wherein the cones are vertical to the elastic rod; one end of the connecting rod is fixedly connected with the middle part of the elastic rod while the other end of the connecting rod is provided with an external thread part; and the nut is screwed with the external thread part. With the adoption of the structure, when the inferior tibiofibular bolt elastic fixing device is used, a tunnel is drilled through the middle of the tibiofibula by a drill, the connecting rod passes through the tunnel, and the external thread part of the connecting rod is screwed with the nut; and tips of the cones on the elastic rod are embedded into the tibia to different extents, so that over-shift front and back and up and down of the tibiofibula and loss of reset are avoided. The surgical procedure is not only minimally invasive, but also has great value for improving the surgical quality, shortening the surgical time, reducing the intraoperative hemorrhage and shortening the postoperative rehabilitation periods of a patient.

The invention relates to a master-slave teleoperation vascular intervention surgical robot which comprises a master control mechanism, a slave propulsion mechanism and a PMAC (Programmable Multi-Axis Controller); the master control mechanism serves as the operating end for a doctor; the slave propulsion mechanism serves as an actuating mechanism of the robot, and used in an operating room for replacing the doctor to hold a catheter for completing the motion function of the catheter; and the PMAC is used for realizing information transfer between the master control mechanism and the slave propulsion mechanism, so that the slave catheter propulsion mechanism moves according to the motion information of the master control mechanism. The master-slave teleoperation vascular intervention surgical robot has the advantages that the master-slave teleoperation method is adopted for assisting the doctor to perform the operation, the slave propulsion mechanism realizes the axial feeding and circumferential rotation motion of the catheter, and is used in the operating room for replacing the doctor to hold the catheter, so that the doctor is free from the operating room, and outside the operating room without ray radiation, the master control mechanism realizes the teleoperation of the catheter propulsion mechanism to avoid the doctor from ray radiation; and the operation is stable and reliable, the operation accuracy is high, and the operation quality is favorably improved.

The invention relates to a dual-path 3D laparoscope and a dual-path 3D laparoscopic system, relates to the field of laparoscopes and laparoscopic systems, and solves the problems that presently, foreign 3D laparoscopes are high in cost and domestic 3D laparoscopes do not meet the using standards. The dual-path 3D laparoscope comprises a left light path, a right light path, an upper lighting fiber, a lower lighting fiber, and an outer tube; the left light path and the right light path composed of the full-same structures are formed by sequentially arranging a front objective, a middle image transmission rod lens, a rhombic prism, a rear objective, protective glass and an imaging face in an inner tube. The dual-path 3D laparoscopic system is composed of the dual-path 3D laparoscope, a dual-path CCD camera, an image data processor, and a multi-path precision 3D display. Depth of field of the dual-path 3D laparoscope is 10-180mm, operating length of the outer tube is 330mm, and the depth of field and the operating length both meet the international general requirement of traditional laparoscope for the smallest length; the dual-path 3D laparoscopic system is low in cost and convenient to use.

The invention provides an intramedullary repositor for fracture of long bones of arms and legs, and belongs to the technical field of medical equipment in an orthopedics department. The intramedullary repositor is used for quick reposition on fracture of long bones which move sideward. According to the technical scheme, a reposition rod of the intramedullary repositor is positioned in a cavity of an outer sleeve; one side of the rear of a reposition head is connected with the inner wall of the outer sleeve through a fixing shaft; the other end of the rear of the reposition head is connected with the front end of the reposition rod through a rotating shaft; the front of the reposition head extends out of the front end of the outer sleeve; the rear end of the reposition rod is connected with a pull-and-push handle; and a wire guiding hole is formed in a wall on the lower portion of the outer sleeve and is a through hole formed along the axis of the outer sleeve. The outer sleeve is planted in a medullary cavity in one end of a long fractured bone; the reposition head enters a medullary cavity opposite to a fractured end; and the pull-and-push handle at the rear end of the reposition rod is pulled, so that the reposition head shifts the opposite medullary cavity, and reposition on the opposite fractured bone is realized. The intramedullary repositor is simple in structure and convenient to use; quick reposition on the long fractured bones which move sideward or rotate can be realized; and the reposition accuracy and the surgery quality are improved.

The invention discloses a smoke-absorption medical puncture device system. The system includes a puncture device, a controller, a pressure reducer and a gas supplying device, wherein the gas supplying device is connected to the input end of the pressure reducer, and the output end of the pressure reducer is connected to the gas input end of the controller; the gas output end of the controller is connected to the puncture device through a gas supplying pipe; the puncture device comprises a base and a puncture conduit, and the puncture conduit includes an outer sleeve, a middle sleeve and an inner sleeve; a gas extracting passage is formed between the outer sleeve and the inner sleeve, a gas returning passage is formed between the middle sleeve and the inner sleeve, and an instrument accessing passage is formed inside the inner sleeve; one end, positioned inside the base, of the middle sleeve penetrates through the outer sleeve, and one end, positioned inside the base, of the inner sleeve penetrates through the middle sleeve and the outer sleeve; a water removing device, a first smoke removing device, a water-proof draught fan and a second smoke removing device are successively arranged between the outer sleeve and the middle sleeve. The smoke-absorption medical puncture device system, by adopting a totally-enclosed smoke-removing structure with the three passages, greatly improves efficiency and quality of operations, and ensures safety of operation receivers.

The invention discloses a sealing cover used for clamping a laparoscope. The sealing cover is provided with an incision; the wall thickness of the position of an incision gap is 0.5 to 5 mm; a juncture of the incision gap is provided with a slope along the wall thickness direction; the lower portion periphery of the sealing cover is provided with a ring groove; and the sealing cover is made of polymer elastomer materials. The invention also discloses a laparoscopic preheater which comprises a vacuum cup and the sealing cover, wherein the outer wall of the ring groove of the sealing cover is closely matched with the outer edge of a cup rim of the vacuum cup and the inner wall of the ring groove is closely matched with the inner wall of the cup rim of the vacuum cup. According to the sealing cover used for clamping the laparoscope and the laparoscopic preheater, the technical problem that the existing laparoscopic lens is frequently fogged after inserted into a human body can be solved, an instrument which enables laparoscopic lenses to be conveniently and effectively cleaned in an operation process is provided for doctors, great convenience is brought to surgeons and surgeon assistants, and accordingly the operation efficiency and the operation quality are improved.

The invention provides an ophthalmic surgery navigation system. The ophthalmic surgery navigation system provides eye position and rotation information for an intraoperative doctor through integrationwith a surgical microscope, and assists a doctor in performing surgery. According to the system, surgery video is obtained in real time based on an artificial intelligent image processing algorithm,the current frame of image is tracked based on extraction of a plurality of target areas or features, accumulated errors are corrected according to reference images, and finally, information such as eye scaling, displacement, rotation and non-rigid deformation is determined. Eye position information is projected into a surgical microscope, real-time, continuous, automatic and accurate navigation of surgery is achieved, manual marking is avoided, personalized ophthalmic surgery is achieved, surgical quality is improved, and postoperative visual recovery of patients is improved.

The invention discloses a gasless minimally invasive surgery auxiliary device. The device comprises a supporting tail end, a tool box and a tool rod, wherein a tool box transmission device is installed in the tool box, the supporting tail end comprises a rear supporting base and a front supporting base, a plurality of grooves are arranged on the rear supporting base and the front supporting base along peripheral directions respectively, a rear pin roll is connected with each of the grooves of the rear supporting base, a front pin roll is connected with each of the grooves of the front supporting base, each of groups of front pin rolls and rear pin rolls, which are arranged corresponding, are connected through connecting parts, the rear supporting base is fixed at the front end of the tool rod, the front end of the supporting shaft is connected with the front supporting base fixedly through a supporting head, the rear end of the supporting shaft penetrates through a central hole of the tool rod and is connected with the tool box transmission device, under the driving of the tool box transmission device, expansion and rotation motions are conducted, and the front supporting base can perform expansion motion relative to the rear supporting base under the driving of the supporting shaft. According to the device, the compression effect for other parts such as the chest, caused by the fact that the abdominal cavity is aerated, can be reduced.

The invention provides an artificial valve conveying system which comprises an outer tube, an inner tube, an expandable balloon, a first blocking piece and a second blocking piece, each of the first blocking piece and the second blocking piece comprises a fixing part and a locking part, each locking part is of a circumferentially-closed annular structure, each fixing part is connected with the inner tube, and each locking part is of a circumferentially-closed annular structure. A first fluid channel or a second fluid channel is arranged on the side wall of the first stopper; the side wall of the second stopper is provided with a first fluid channel; the first fluid channel penetrates through the stop part in the axial direction of the inner pipe; the second fluid channel penetrates from one end, far away from the fixed part, of the stop part of the first stopper to one end, far away from the stop part, of the fixed part of the first stopper in the axial direction of the inner pipe; and the end parts of the two stop parts can axially limit the artificial valve. According to the invention, the expansion medium can flow more smoothly at the initial expansion stage of the expandable balloon, so that the interventional therapy can be quickly carried out, and the artificial valve can be better prevented from axial displacement in the expansion process of the expandable balloon.