38 results about "Membrane rupturing" patented technology

The invention provides a high-pressure gas membrane rupture pressure measuring device and a measuring method thereof, and belongs to the technical field of pressure measurement. The measuring device comprises a pressure generation system, a gas compression system, a gas injection system, a pressure measuring system and a diaphragm clamping system. The piston divides the cavity into a hydraulic cavity and a gas compression cavity, and the piston is hydraulically driven to compress the pre-filled gas, so that the diaphragm is broken. The pressure measurement system records pressure-time data in real time, and a sliding window average algorithm is adopted to extract a membrane rupture pressure peak value. According to the technical scheme, inert gas is used, initiating explosive devices are not used, membrane rupture energy is only gas expansion, the protection box can absorb fragments, and explosion-proof transformation is not needed in a laboratory. And the smoothed unique membrane rupture pressure value is output through a sliding window averaging algorithm, and manual reading errors are eliminated. According to the technical scheme, the device is compact in structure, safe to operate, rapid in testing and suitable for accurately measuring the diaphragm rupture pressure of the gas gun diaphragm in a conventional laboratory.

The utility model provides an ultrafiltration membrane pressure detection device, which relates to the technical field of ultrafiltration membrane pressure detection, and comprises a shell, the top of the shell is provided with a top cover, the top of the top cover is connected with a drain outlet, the front surface of the shell is connected with a monitoring alarm assembly, and the monitoring alarm assembly comprises a purified water outlet. According to the utility model, the pressure sensor and the flow sensor are respectively arranged at the purified water outlet and the drain outlet, so that a real-time monitoring effect can be achieved, and when the flow or the pressure difference reaches a set numerical value, the PLC controller gives an instruction to carry out systematic backwashing, forward flushing and other maintenance actions on the membrane at the moment; and if the trans-membrane pressure difference almost does not exist, the serious problems such as membrane breakage are possibly caused, and the alarm can automatically give an alarm to remind an operator to check the fault of the membrane in time, so that the problem that the membrane cannot be normally used due to blockage is avoided.

The utility model discloses a biodegradable film punching and collecting device, which comprises a punching unit, which comprises a rotating shaft, a punching wheel rotatably arranged on the rotating shaft, an armrest frame arranged between the two ends of the rotating shaft, and punchers arranged on the punching wheel at intervals along the circumferential direction, and each puncher is provided with a film breaking opening; the film collecting unit comprises an air nozzle installed in the film breaking opening, an air pump installed on the punching wheel, an air pipe connected with the air pump and the air nozzle and a film collecting box installed on the lower middle portion of the rear side of the punching wheel, and a film collecting opening is formed in the side, facing the punching wheel, of the film collecting box. Through the arranged film collecting unit, when a tapper rotating to the bottom breaks a film, an air pump sucks air, so that broken residual films are sucked into a film breaking opening, when the tapper rotating to the bottom rotates to a film collecting box, the air pump blows air, so that the residual films in the film breaking opening are blown into the film collecting box to be stored, the situation that the residual films are difficult to collect is avoided, and the aesthetic feeling is improved; and the recycling of resources is realized.

The invention relates to the technical field of medical tools, in particular to an artificial membrane rupturing structure which comprises a barrel and a suction cup mounted at the top end of the barrel and further comprises a guide seat, a membrane rupturing device, a membrane rupturing device and a membrane rupturing device, the guide seat is mounted in the barrel, and a through hole is formed in the guide seat; the adsorption mechanism is installed in the cylinder body and connected with the guide seat, and the adsorption mechanism enables the suction cup to be adsorbed to the surface of the amniotic membrane; the artificial membrane rupturing structure is different from the prior art, in the using process of medical staff, the amniotic membrane can be clamped and fixed only by attaching the suction cup to the amniotic membrane and then pulling the hollow push rod, then puncturing is automatically conducted, the flow speed after membrane rupturing is stable, the membrane rupturing can be easily completed even though the medical staff with less experience, and operation is easy; the amniotic fluid after rupture of the membrane automatically flows to the outside through the drainage tube from the inside of the cylinder, and the amniotic fluid is not in contact with the uterus of the pregnant woman, so that the probability of infection in the uterus of the pregnant woman is greatly reduced, and the turbidity of the amniotic fluid flowing out can be directly observed.

The utility model provides an in-situ windowing membrane rupture device for a covered stent, which relates to the field of medical instruments and comprises an outer tube, a middle-layer positioning tube, an inner-layer positioning tube and a membrane rupture guide wire which are sequentially sleeved from outside to inside and can relatively axially slide two by two, an elastic expansion part is connected to the peripheral surface of the far-end section of the middle-layer positioning tube and has an expansion state of expanding in the radial direction to be spherical and a contraction state of contracting in the radial direction; the outer tube can axially slide relative to the middle-layer positioning tube, so that the elastic expansion part is accommodated or released in the outer tube; the far-end face of the inner-layer positioning pipe is provided with concave-convex positioning sawteeth facing the far-end direction. The aorta covered stent at least relieves the technical problem that in the prior art, when an aorta covered stent is subjected to in-situ windowing and membrane rupture, guide wire positioning is not accurate.

The utility model is applicable to the field of medical instruments, and provides a safe membrane rupture device for obstetrics, which comprises a barrel, a plurality of vent holes are arranged at the upper end of the barrel, a threaded rod is in threaded connection with the upper end of the barrel, an I-shaped ring is fixedly connected with the lower end of the threaded rod, and the I-shaped ring is rotatably connected with a connecting frame. The lower end of the connecting frame is fixedly connected with an abutting plate. A lower bottom plate is slidably connected to the inner wall of the barrel, a membrane rupture needle is fixedly connected to the lower end of the lower bottom plate and used for puncturing amniotic fluid, a middle column is fixedly connected to the upper end of the lower bottom plate, an upper bottom plate is fixedly connected to the upper end of the middle column, and a resistance assembly is arranged on the upper bottom plate in a matched mode. A plurality of symmetrical first vent grooves are formed in the lower bottom plate, a plurality of symmetrical second vent grooves are formed in the middle column, and a plurality of symmetrical third vent grooves are formed in the upper bottom plate. The amniotic fluid puncturing device has the advantages that the amniotic fluid puncturing depth is controllable, and the amniotic fluid is effectively sucked away.

The utility model relates to a capsular membrane polisher after cataract surgery, which comprises a connecting tube, a polishing head is rotatably connected to one end of the connecting tube far away from the connecting tube, a water outlet hole is arranged on the polishing head, the connecting tube is communicated with the water outlet hole, an impeller is arranged at the position of a tube opening where the connecting tube is connected with the polishing head, and the impeller is connected with the polishing head. A connecting rod is fixedly connected to the center of the impeller, the two ends of the connecting rod are rotationally connected with the side wall of the connecting pipe and fixedly connected with the side wall of the polishing head respectively, a pushing and injecting assembly is installed at the end, away from the polishing head, of the connecting pipe and used for injecting liquid into the water outlet hole, and the liquid drives the impeller to rotate when passing through the impeller. The capsular membrane polisher used after the cataract surgery aims to solve the problems that in the prior art, the head of a capsular membrane polisher is fixedly connected with a handle of the capsular membrane polisher, the polisher polishes the capsular membrane excessively due to excessive force in the using process, the safety is not high, the head needs to be rotated manually by workers, and the operation difficulty is large.

This utility model discloses a membrane rupture forceps with a splash guard, comprising a first forceps body, a second forceps body, and a shield. The first forceps body and the second forceps body are rotatably connected by a connecting device. The first forceps body includes a first handle and a first jaw and a first gripper located at both ends of the first handle. The second forceps body includes a second handle and a second jaw and a second gripper located at both ends of the second forceps body. One end of the shield is an open end, and the other end of the shield has a groove extending radially along the open end. The first jaw and the second jaw protrude from the open end through the groove. Sliding elements are provided on both the first handle and the second handle, and the first handle and the second handle are slidably connected within the groove along its length direction via the sliding elements. This utility model, by incorporating a splash guard, prevents amniotic fluid from splashing onto the faces and bodies of medical personnel, thus protecting their health.

The application provides a content extraction method based on cell membrane capacitance change, and belongs to the field of cell-level micromanipulation technology, and comprises the following steps: S1, a change relationship between cell membrane capacitance and cell membrane surface area is established; S2, a change relationship between cell membrane surface area and volume is approximately established; S3, high-resistance sealing and membrane rupture of cells are completed, constant voltage cell content extraction operation is performed, and cell membrane capacitance values in the extraction process are obtained in real time through capacitance fitting; S4, content extraction amount is estimated; S5, actual cytoplasm extraction amount is calculated based on a rotary L-shaped electrode, the relationship model established in S2 is corrected, and finally, quantitative extraction of cell contents is realized. The application utilizes an electrical model of cell membrane capacitance, realizes real-time feedback of cell content extraction amount, realizes quantitative control of content extraction, can realize a cytoplasm extraction success rate of 62.5% in the case of a whole cell patch clamp structure, and the average cytoplasm extraction amount control error is less than 6% of the total cell volume.

This application provides a membrane structure solvent for nanopore sequencing, its preparation method, and its application. The membrane structure solvent for nanopore sequencing has the membrane structure located within a crosslinkable solvent; the crosslinkable solvent self-crosslinks to form a network structure, encapsulating the membrane structure. This application crosslinks the solvent of the membrane-forming solution to form a network structure, thereby confining the formed membrane structure within this network structure and ensuring its stability, preventing membrane rupture and other issues.

The application belongs to the technical field of micro-nano robots, and relates to a magnetic response chain micro motor with peroxidase-like catalytic activity for breaking a membrane and sterilization and a preparation method and application thereof. The application discloses a magnetic response chain micro motor with peroxidase-like catalytic activity for breaking a membrane and sterilization. Under the action of an applied magnetic field, the magnetic response chain micro motor can destroy the structure of a bacterial biofilm and kill bacteria in the bacterial biofilm in a weakly acidic to neutral liquid medium, and can be applied to antibiofilm.

The invention provides a cell membrane capacitance change-based content extraction method, and belongs to the technical field of cell-level micromanipulation, and the method comprises the following steps: S1, establishing a change relationship between cell membrane capacitance and cell membrane surface area; s2, approximately establishing a change relation between the surface area and the volume of the cell membrane; s3, completing high-resistance sealing and membrane rupture of the cells, executing constant-pressure cell content extraction operation, and obtaining a cell membrane capacitance value in the extraction process in real time through capacitance fitting; s4, estimating the content extraction amount; and S5, calculating an actual cytoplasm extraction amount based on a rotating L-shaped electrode, correcting the relation model established in the step S2, and finally realizing quantitative extraction of the cell contents. According to the invention, the electrical model of the cell membrane capacitance is utilized to realize the real-time feedback of the extraction amount of the cell contents and the quantitative control of the extraction of the contents, the cytoplasm extraction success rate of 62.5% can be realized under the condition that a whole-cell-membrane clamp structure is formed, and the control error of the average cytoplasm extraction amount is less than 6% of the total volume of the cells.

The invention provides a pH-sensitive membrane rupture sequence polypeptide with a structure as shown in a formula (I), or a stereoisomer or pharmaceutically acceptable salt thereof, and application of the pH-sensitive membrane rupture sequence polypeptide or the stereoisomer or the pharmaceutically acceptable salt thereof. The macromolecular material is hydrophobic and electrically neutral under normal physiological pH, can be self-assembled into nano-particles, is compact in assembly, and has weak interaction with cell membranes; under the condition of slightly acidic pH, the amphiphilic polymer can be protonated to form an amphiphilic structure consisting of a hydrophobic structural domain and a cationic structural domain, has strong interaction with cell membranes and has strong membrane rupture activity, so that the amphiphilic polymer can efficiently and highly selectively kill tumor cells.

A water purifier includes a composite filter, an RO filter, and a post-filter. A booster pump, an inlet solenoid valve, and a raw water TDS sensor are installed on the pipeline between the outlet of the composite filter and the inlet of the RO filter. A pure water TDS sensor is installed on the pipeline between the RO filter and the post-filter. The water purifier also includes a detection and desalination rate calculation module and an alarm. The detection and desalination rate calculation module calculates the desalination rate based on the measured TDS values ​​of the raw water and pure water, and determines whether the RO membrane is damaged based on two consecutive desalination rate readings. This invention has a reasonable structure, a simple and accurate membrane rupture detection method, and can promptly detect the RO membrane to ensure drinking water safety.

The invention discloses a dialyzer membrane rupture detection device and a control method, which are used for detecting a dialysis membrane when a user performs dialysis, and comprise a dialysate supply module, a pre-penetration pump, a balance cavity, a post-penetration pump, an electromagnetic valve group, a first pressure sensor, a dialyzer connection module and a control module, the dialyzer connecting module is provided with a liquid supply port and a liquid return port; dialysate is connected with a dialyzer through a dialysate supply module, a pre-penetration pump, a balance cavity, an electromagnetic valve group and a dialyzer connecting module, so that the dialyzer flows back to a post-penetration pump through the electromagnetic valve group and is discharged; the opening and closing of the electromagnetic valve group can be controlled by the control module according to a preset program, so that pre-filling and sealing detection can be realized, and an automatic and closed-loop membrane rupture test can be completed. Compared with a manual visual method or a simple leak detection method, the method has the advantages that the detection accuracy and repeatability are improved, manual operation errors are reduced, recording and tracing are facilitated, and the clinical use safety and working efficiency are improved.

The invention also discloses a reaction system for realizing oil-water separation by coupling the electrostatic field with the micro-channel, which is suitable for continuous treatment of oil-containing sewage in an oil field. The reaction system comprises the micro-channel reactor unit and the electrostatic field coupling unit. The micro-channel atomization pretreatment releases more activation sites, the space and time of an electrostatic field are synchronously coupled, and the integrated tube body electrode and the automatic power regulation are synergistically acted on the membrane rupture, polarization and coalescence process of emulsified oil drops; therefore, under the continuous operation condition, the obvious beneficial effects that the demulsification rate is reduced from the minute level to the second level, the energy consumption is reduced by more than 80% compared with the traditional process, the emulsified oil is quickly demulsified, and the equipment is not blocked for a long time are realized.

The utility model discloses a membrane rupture and amniotic fluid collection device utilizing negative pressure adsorption and rotary cutting. The membrane rupture and amniotic fluid collection device comprises an adsorber, a rotary cutting device and a vacuum generating device, the adsorber is tubular, the two ends of the adsorber are an adsorption end and an operation end respectively, a one-way membrane and a sealing cover are arranged in the adsorber, the one-way membrane is fixed to the inner wall of the adsorber, an amniotic fluid cavity is formed between the one-way membrane and an end opening of the adsorption end of the adsorber, and a negative pressure cavity is formed between the sealing cover and the one-way membrane. An operation cavity is formed between the sealing cover and the port of the operation end of the adsorber; the rotary cutting device comprises a rotary handle and a rotary cutting blade; the vacuum generating device comprises a negative pressure suction pipe and a negative pressure device. According to the utility model, the rotary cutter with the flower-shaped rotary cutting edge is used for replacing a needle, so that the fetal membrane can be broken after a fetus is separated from the fetal membrane, and the fetus is prevented from being accidentally injured. In the membrane rupturing process, micro-feeding of the tool bit can be achieved, the safety of a fetus is further guaranteed, the force and depth of the fetal membrane pulled into the device can be accurately controlled, and the membrane is ruptured accurately.

This application provides a solvent carrier for nanopore sequencing, its preparation method, and its application. The solvent carrier for nanopore sequencing comprises a nanopore sequencing unit containing microwells, the upper end of which is covered with a nonpolar film-forming solution. The nonpolar film-forming solution includes a copolymer membrane and a nonpolar solvent. The end groups of the nonpolar solvent contain unsaturated bonds I, and the surface of the upper end of the microwell contains unsaturated bonds II. The nonpolar solvent is cross-linked with the surface of the upper end of the microwell to form the solvent carrier. This application cross-links the solvent of the film-forming solution to form a network structure, thereby allowing the formed membrane structure to be confined within this network structure and to exist stably, avoiding membrane rupture and other issues.

This invention relates to the preparation and application of an oncolytic virus that specifically promotes the rupture of tumor cell plasma membranes. Specifically, this invention utilizes a glioblastoma-specific Nestin enhancer or a tumor cell-specific Survivin promoter to drive the specific expression of the NINJ1 or DTA gene, thereby enhancing the lytic and killing ability of cells. The oncolytic virus G005 expressing NINJ1 exhibits strong killing ability against tumor cells, and the tumor completely disappears in an orthotopic glioma animal model. It can also rapidly restore the weight loss in mice caused by tumor burden, demonstrating that the oncolytic virus G005 has excellent therapeutic effects against GBM.

The utility model provides a kind of obstetric artificial membrane rupture needle, it is related to obstetric technology field, including: barrel, barrel inside is equipped with storage groove, barrel inside is equipped with moving groove, needle head is equipped in storage groove, connecting rod is equipped in moving groove;Limiting component is set between barrel and connecting rod, limiting component includes: limiting slot, limit hole and limiting rod;And setting between needle head and connecting rod is fixed component, fixed component includes: moving plate, connecting block, clamping groove, mounting block and elastic sheet.This kind of can be limited to the distance of needle head by the setting of limiting component, avoid needle head to cause harm to maternal and fetus, simultaneously in the process of needle head extension whole in storage groove, avoid needle head to scratch inside cervix, by the setting of fixed component, can according to the actual situation of maternal and fetus, quickly clamped suitable needle head carries out membrane rupture operation.

The utility model belongs to the technical field of membrane separation equipment, particularly relates to a self-adaptive pressure stabilizing system of a membrane separation component based on pressure difference feedback, and aims to solve the problem that the pressure is controlled only by the frequency of a fixed valve or pump when the existing system is actually used, and the pressure cannot be controlled when the resistance of the membrane component is changed due to pollution and the like. According to the technical scheme, the membrane separation assembly self-adaptive pressure stabilizing system based on pressure difference feedback comprises a membrane separation assembly body, and the two ends of the membrane separation assembly body are provided with a liquid inlet end and a liquid outlet end respectively; the utility model has the beneficial effects that the integrated controller accurately regulates and controls according to the preset pressure, sends instructions to the variable frequency pump and the electromagnetic valve, maintains the pressure stable, greatly improves the separation efficiency, and reduces the risks of membrane rupture and leakage. The filter screen at the liquid inlet end intercepts impurities, slows down membrane pollution, prolongs the service life of a membrane assembly, guarantees normal operation of other parts, and reduces equipment faults.

The utility model relates to the technical field of medical instruments, in particular to a fetal membrane puncturing device for gynaecology and obstetrics, which comprises a connecting handle, the front end of the connecting handle is rotatably connected with a rotating handle, a pushing rod is arranged in the connecting handle in a sliding and penetrating mode, one end of the pushing rod extends into the rotating handle, and an external thread is arranged on the surface of the end portion of the pushing rod. And an internal thread matched with the rotating handle is arranged in the rotating handle. By adding a thread matching mechanism of the rotating handle and the pushing rod, accurate control over the feeding amount and the puncturing depth of the membrane rupturing needle is achieved, the risk caused by too deep puncturing to a fetus is reduced, the stability and accuracy of operation are remarkably improved, the uncertainty caused by manual operation is reduced, and therefore the safety of the membrane rupturing process is improved.

The invention provides a shock tunnel diaphragm rupture time prediction method, and the method comprises the steps: regarding a diaphragm rupture process as a large deformation transient process under a high strain rate, building a kinetic equation about a diaphragm flap rotating shaft, and carrying out the normalization processing of a time item; the diaphragm opening position is innovatively regarded as a nozzle throat, an unsteady one-dimensional expansion pneumatic relation is utilized, pneumatic parameters are converted into pressure boundary conditions in diaphragm structure analysis, and then diaphragm rupture time is inversely solved through integration. The method effectively solves the problem that the rupture time of the diaphragm and the opening time under different opening degrees are difficult to accurately predict, the theoretical prediction error is within 10%, the method has the advantages of being rapid in calculation, high in precision and wide in applicability, and the research and development cost of the shock tunnel test can be greatly reduced.

The application discloses a kind of based on space-time sequential nature magnetic control membrane rupture and release sterilization mechanism multiple antibacterial composite coating material and its preparation method and application, preparation method is as follows: 1) using micro-arc oxygen technology is constructed microporous structure on the surface of titanium-based instrument after pretreatment;2) using emulsion self-assembly method constructs quaternary ammonium chitosan and negative charged antibacterial agent nanoparticle, using one pulse electrophoresis process is loaded in micropore nanoparticle;3) Fe3O4 NPs are prepared by hydrothermal method, and Fe3O4 NPs are controlled in micropore by secondary pulse electrophoresis process, after washing, drying and irradiation sterilization, antibacterial composite coating is obtained;The material can be driven Fe3O4 NPs on titanium-based instrument to generate torque to destroy bacterial biofilm by applying reverse circular polarized magnetic field, and promote the inner layer to release antibacterial agent, realize space-time sequential nature magnetic control membrane rupture and release sterilization, realize efficient treatment for bone infection.

The invention discloses a diaphragm with high hole closing temperature and high diaphragm rupture temperature, and the diaphragm is prepared by the following method: mixing polyolefin and paraffin oil in a mass ratio of 3: 1, mixing at 230 DEG C for 10 minutes, extruding, cooling and casting to obtain an oil-containing substrate, and performing 15-20 times of bidirectional stretching and extraction on the oil-containing substrate to obtain a polyolefin substrate; the polyolefin base material is sequentially subjected to dip-coating and ultraviolet light irradiation treatment to obtain the diaphragm, wherein a dip-coating liquid for dip-coating comprises a photoinitiator, a synergist and an organic solvent, and the TMA rupture temperature of the diaphragm is greater than or equal to 220 DEG C, the tensile strength is greater than or equal to 2000 kgf / cm, the ductility is greater than or equal to 50%, and the hole closing temperature is greater than or equal to 150 DEG C; through the method, the problem that the membrane rupture temperature and the closed pore strength of the existing diaphragm cannot meet the application requirements of a high-strength and high-energy-density battery can be solved.

The invention discloses a cotton seedling detection and laser membrane rupture control method based on improved YOLOv11 and image processing, and belongs to the technical field of agricultural automatic detection and control. According to the method, aiming at the problems of low precision and large damage of traditional mechanical film breaking, deep learning and image processing technologies are combined, and precise positioning and efficient film breaking of cotton seedlings are realized. The method comprises the following specific steps: carrying out target detection by adopting an improved YOLOv11 model integrated with a PConv-CGLU hybrid module, and optimizing bounding box regression precision in combination with an MPDIOU loss function; highlighting a green region of the cotton seedling by using HSV color space conversion and an ultra-green feature extraction algorithm, and calculating a centroid coordinate through contour analysis; setting a threshold value based on the contour area to determine the size of the cotton seedling, and dynamically adjusting the membrane rupture radius; and finally, the laser control unit controls the laser to accurately rupture the membrane according to the center point coordinate and the contour information. The method improves the film breaking precision and efficiency, reduces the damage rate of cotton seedlings, and is suitable for automatic film breaking operation of field plastic film mulching crops.

The invention discloses a waste acid low-temperature evaporation and concentration harmless purification and recycling method. The method comprises the following steps: S1, industrial waste acid impurity pre-removal treatment: S1-1, industrial waste acid is subjected to pre-filtration treatment; s1-2, carrying out crystallization treatment on the filtered waste acid; s1-3, after crystallization treatment, solid-liquid separation is achieved through low-temperature centrifugal separation; according to the method disclosed by the invention, an ultrasonic and vacuum pulse evaporation mechanism is designed, an interface is updated through ultrasonic membrane rupture and vacuum pulse, the core problems of low low-temperature evaporation mass transfer efficiency and easiness in scaling are solved, and efficient low-temperature concentration of waste acid is realized; according to the invention, a pretreatment process combining composite membrane pre-interception with low-temperature crystallization is designed, heavy metal ions are accurately captured by using a composite crystallization inducer, and the disadvantage that new impurities are introduced by a traditional chemical precipitation method is avoided.

The utility model relates to the field of artificial membrane rupture, and discloses an artificial membrane rupture device for gynaecology and obstetrics, which comprises a shell, a fixed ring is fixedly connected to the inner wall of the front side of the shell, a movable ring is slidably connected to the inner wall of the rear side of the shell, and a fixed block is fixedly connected to the outer wall of the right end of the movable ring. And a long rod penetrates through the inner wall of the moving ring and is in threaded connection with the inner wall of the moving ring, a moving rod is slidably connected to the inner wall of the long rod, and a limiting assembly is arranged on the inner wall of the bottom end of the shell. According to the utility model, the fixed block is pushed forwards, the movement of the fixed block drives the movable ring and the long rod to move forwards, so that the long rod extends into the channel opening, the fixed block extrudes the embedded block to enable the embedded block to retract to the inner wall of the shell, and when the limiting groove in the fixed block moves to the lower end of the embedded block, the embedded block pops up and is clamped on the inner wall of the fixed block to fix the fixed block; and the position of the long rod is quickly adjusted, and then the long rod is rotated for slow adjustment, so that the time of moving the membrane rupture needle to the amniotic fluid membrane can be saved.

The invention discloses an obstetrical clinical anti-outflow membrane rupture device which comprises a catheter, an anti-flow cover is hermetically mounted at the left end of the catheter and is in an arc shape, a sleeve seat is mounted on the outer side of the catheter in a nested manner, a supporting column is connected to the bottom of the sleeve seat in a penetrating manner, and the obstetrical clinical anti-outflow membrane rupture device further comprises a membrane rupture needle slidably mounted in a slotted manner in the catheter in a penetrating manner. The right end of the membrane rupturing needle penetrates and extends to the outer side of the right end of the catheter, scale marks are arranged on the right side of the catheter, and a driving mechanism is arranged in the catheter in a slotting mode. According to the clinical anti-outflow membrane rupture device for the obstetrical department, grooves are formed in the upper end and the lower end of the left side of a catheter, tilting rods are rotationally installed through transmission gears, at the moment, two moving plates are extruded to move, and then the two moving plates drive the two transmission gears to rotate through racks at the same time; and then the two tilting rods can be driven at the same time to open the vagina of the puerpera, so that the membrane rupturing needle can perform membrane rupturing treatment conveniently.

The invention provides a sterile piglet production device and aims at solving the problem that cross infection is prone to occurring in the existing cesarean section process. The device adopts a modular design, and comprises a soft membrane laparotomy isolator, a uterus rupture isolator, a transfer isolator and a rearing isolator. A laparotomy laminar flow cover is arranged in the soft film laparotomy chamber, and a sterile positive pressure environment is provided for the laparotomy operation of the sow. And laparotomy is carried out on the sow in the soft membrane laparotomy chamber, the uterus body is taken out, the taken-out uterus body is disinfected when passing through the transfer groove of the membrane rupture isolator, the disinfected uterus body is sent into the membrane rupture isolator for membrane rupture, and the piglet in the uterus body is taken out. And then, the piglets are transferred into the transfer isolator through the sealed transfer window and finally enter the breeding isolator for breeding. The core lies in that the internal clean positive pressure is maintained through the independent air purification system of each module, and the whole-process sterile operation from laparotomy, membrane rupture, transfer to rearing is realized in combination with the design of a sealing interface, disinfectant soaking, excrement separation and the like, so that the survival rate and the health level of piglets are remarkably improved.