22 results about "Micro orifice" patented technology

This invention relates to the field of factory environmental control technology, and discloses a distributed micro-orifice jet temperature control system and its control method for factory environments. The system includes a central unit, a main air supply duct, branch hoses, workstation-level electromagnetic regulating valves, female quick-connect fittings with leak-proof check valves, and terminal equipment with male quick-connect fittings. The terminal equipment is equipped with a hollow column composed of an outer and inner tube, a telescopic locking mechanism, and low-voltage cables with a helical spring-like extension structure. It also includes an AI controller, an ambient temperature sensor, a body surface temperature sensor, a personnel presence sensor, and a pulse width modulation generator. This invention uses leak-proof check valves to block airflow in vacant workstations to avoid energy loss, utilizes the helical spring-like extension structure to prevent breakage of low-voltage cables, and uses the AI ​​controller to adjust the flow cross-sectional area of ​​the workstation-level electromagnetic regulating valves based on multi-sensor parameters to achieve safe flow interruption and protect personnel at the workstations.

This invention relates to the field of hydrogel electrode patch technology, and more particularly to a microstructured hydrogel patch and its preparation method, comprising a base layer, a conductive layer, and a hydrogel electrode layer stacked sequentially. The skin-contact surface of the hydrogel electrode layer is arrayed with micro-protrusions, each micro-protrusion having a micro-flared adsorption portion at its end, and an inward-curving portion at the end of the adsorption portion. A mesh-like breathing channel is provided between the micro-protrusions, and a breathable channel is axially opened on each micro-protrusion. A microporous one-way breathing valve communicating with the breathing and breathable channels is provided on the base layer. During preparation, the micro-protrusions and their end structures are formed using a mold, and the breathable channels are constructed. This invention enhances the adhesion between the patch and the skin through the micro-flared adsorption portion and the inward-curving portion, and combined with the breathable structure, improves breathability and wearing comfort, avoids skin allergies, and provides stable signal acquisition, making it suitable for long-term physiological signal monitoring.

This invention relates to a device and method for aspirating hemorrhage from the stomach. The device includes a guide tube with an axially arranged suction chamber and an auxiliary chamber. One end of the suction chamber is fitted with a plug that communicates with it. The plug has several microporous rings penetrating its inner and outer circumference. The other end of the suction chamber is connected to a negative pressure unit. The auxiliary chamber is axially arranged on the wall of the suction chamber. One end of the auxiliary chamber extends into the end of the suction chamber and is connected to an impedance sensor. The other end is connected to an auxiliary flushing unit. The negative pressure unit and the auxiliary flushing unit are also electrically connected to a control module. The control module is electrically connected to the impedance sensor and the microporous rings and is used to trigger pulsed expansion of the microporous rings based on the impedance signal from the impedance sensor. Through pulsed expansion of the microporous rings, combined with reverse flushing by the auxiliary flushing unit, the device of this invention can achieve dual unblocking through both expansion and flushing, improving operational continuity.

This utility model discloses a digital dental 3D-printed titanium framework, comprising a pure titanium frame, a support mechanism and an occlusal mechanism on the pure titanium frame, the support mechanism including an upper support rod and a lower support rod, the top of the upper support rod being fixedly connected to a bone contact surface, the bone contact surface having multiple first micropores, multiple embedded protrusions at the outer edge of the bone contact surface, and first positioning markers on the bone contact surface, and multiple triangular support components between the upper and lower support rods, the triangular support components including a first support rod and a second support rod, belonging to the field of medical device technology. This digital dental 3D-printed titanium framework acquires three-dimensional data of the patient's teeth and jaws through an intraoral scanner, uses selective laser melting equipment, and selects medical-grade Ti-6Al-4V ELI alloy powder as the printing material, effectively improving accuracy, shortening the processing cycle, reducing weight, improving osseointegration efficiency, and reducing costs.

This invention discloses a forced cooling housing for a micro-injection ignition injector in the field of fuel injector technology. The housing includes a housing fixedly fitted onto the outside of the injector body, extending towards the injection end of the injector body and covering the root of the micro-orifice nozzle. Inside the housing are: multiple circumferentially evenly distributed inner cooling channels adapted to the shape of the injector body; multiple injection chambers corresponding one-to-one with the inner cooling channels and located at the liquid outlet of the corresponding inner cooling channels; a nozzle cooling ring channel surrounding the outer periphery of the micro-orifice nozzle and adapted to the shape of the micro-orifice nozzle; and an outer cooling ring channel coaxially located radially outside the inner cooling channels. The injection chambers connect the corresponding inner cooling channels and the nozzle cooling ring channel. This cooling housing, by providing multiple circumferentially distributed injection chambers within the housing, combined with the mechanical drive of the injection assembly, transforms the traditional continuous cooling mode into pulsed directional injection, significantly improving heat exchange efficiency.

The application relates to an intelligent ophthalmic ultrasonic emulsifier and a use method, and belongs to the technical field of ophthalmic surgical instruments, which comprises a main machine body, an operating handle, an anchor component and a viscosity type self-locking mechanism, an ultrasonic amplitude rod, a perfusion pipeline and a suction pipeline are arranged in the operating handle, an emulsification needle head and a perfusion sleeve are arranged at one end of the operating handle, a liquid inlet chamber is formed between the emulsification needle head and the perfusion sleeve, the anchor component is arranged in the liquid inlet chamber and is used for anchoring a hard nucleus in front of an opening of the emulsification needle head, and the viscosity type self-locking mechanism is arranged in the suction pipeline and comprises a hairspring disc body provided with a plurality of micropores; the hairspring disc body is configured to be deformed to block the suction pipeline when a high-viscosity fluid cannot pass through the micropores; the hard nucleus is anchored by the anchor component, so that the ocular tissue is prevented from being damaged by the rebound of the nucleus block; meanwhile, the viscosity type self-locking mechanism is used for instantaneously blocking the suction pipeline when the vitreous body is sucked, so that the retina is prevented from being damaged by traction, and the surgical safety and efficiency are improved.

The application discloses a degradable spinal fusion cage with a bone inductive microporous structure and belongs to the technical field of orthopedic implant medical devices. The fusion cage is integrally made of a degradable polymer composite material, the inside of the main body is provided with a bionic gradient microporous structure which is interconnected, and the surface of the fusion cage is provided with an active coating layer with a slow-release function. The mechanical property of the product is adapted to the physiological bearing requirement of the spine, the product can be steadily degraded along with the bone tissue regeneration process after being implanted into the human body, can effectively guide the bone tissue and microvessels to grow in, and can improve the intervertebral fusion efficiency; meanwhile, the problems of stress shielding, postoperative infection and the need for secondary removal surgery existing in traditional metal implants are solved, the product has good biocompatibility, the structure is reasonable, the preparation process is simple, and the product is suitable for clinical intervertebral fusion surgery of the spine.

The application relates to the technical field of dental implants, in particular to a trans-zygomatic implant and a processing technology thereof, and the processing technology comprises variable-distance multi-stage sand blasting and acid etching surface treatment on an anchoring part with threads of the trans-zygomatic implant and electrochemical polishing surface treatment on an extension part without threads. The trans-zygomatic implant is treated by variable-distance multi-stage sand blasting combined with acid etching, so that a uniform micron-level rough base and a multi-stage micropore structure can be formed on the titanium surface, osteoblast adhesion and differentiation are facilitated, the early bone combination speed is accelerated, the combination strength is improved, the early implant loosening risk is reduced, the extension part of the trans-zygomatic implant is treated by electrochemical polishing, a smooth surface can be obtained, plaque adhesion and bacterial colonization are greatly reduced, the implant peri-implantitis risk is reduced, and soft tissue adhesion is promoted; the dual optimization of bone anchoring and tissue adhesion is realized, and the long-term function and health of the trans-zygomatic implant under complex stress are guaranteed.

A catheter is disclosed that improves control over the shape and extent of agent distribution within biological tissue. The catheter includes a multi-lumen body with a sealed stylet lumen and an agent-delivery lumen terminating in an exposed distal tip portion having a plurality of micropores. Unlike end-port catheters, the micropores provide distributed outflow paths whose hydraulic resistance dominates over heterogeneous tissue resistance, reducing reflux and mitigating leakage into low-pressure structures. The distal tip portion may include multiple axial regions with differing pore densities, pore sizes, or no-pore gaps to tailor infusion geometry, and may be extendable or retractable to selectively expose regions. Additional embodiments may include zonal infusion with independent pressurization, dual-layer pore alignment to vary effective pore size, sensor-based closed-loop control, and microrobot-assisted navigation along straight or curved paths.

A bearing unit has a central axis of rotation includes a radially outer ring having a sliding raceway, a radially inner ring having a sliding raceway, and a plurality of rolling bodies interposed between the radially outer ring and the radially inner ring to enable mutual rotation between the radially outer ring and the radially inner ring. A surface of the sliding raceway of the radially outer ring and / or a surface of the sliding raceway of the radially inner ring and / or a surface of one of the rolling bodies has a textured surface structure that includes micro alveoli divided by crests, and the micro alveoli are arranged along intersecting lines.

The application relates to the technical field of medical supplies, in particular to a portable micro-infusion pump with adjustable flow rate. The portable micro-infusion pump comprises a flow regulator, a pipeline connected with the flow regulator, an infusion structure connected with one end of the pipeline, a connector connected with the other end of the pipeline, and a flow detector connected with the pipeline and located between the flow regulator and the connector, wherein the flow regulator comprises a connecting pipe, a flow channel body arranged in the connecting pipe, a sliding assembly located in a first shell, and a braking and locking assembly. Under the action of the braking and locking assembly, the sliding assembly in the flow regulator can drive a shielding block to slide on one side of the flow channel body, the covering area of micropores on the flow channel body is changed, the effective flow passage cross-sectional area and the fluid resistance of the flow channel are adjusted, the control of the infusion flow rate is realized, and the flow rate can be flexibly adjusted in the infusion process according to the actual needs of patient conditions, drug characteristics and the like.

This invention discloses a micro-orifice solenoid valve measurement system, method, and lunar soil water ice content measurement method, relating to the field of lunar soil measurement. The micro-orifice solenoid valve measurement system includes a water vapor generating unit that heats ice to form water vapor, and a weighing unit that measures the weight change of the ice. The water vapor generating unit is connected to a pressure stabilizing unit via an inlet pipe with a needle valve. The pressure stabilizing unit is connected to a vacuum tank via an outlet pipe with the micro-orifice solenoid valve to be measured, and a vacuum system is used for evacuation. The measurement method combines the actual pressure value when the pressure of the pressure stabilizing unit changes according to a set gradient with the ice weight change value to determine the relationship between the water vapor mass flow rate of the micro-orifice solenoid valve and the pressure before the valve. In the lunar soil water ice content measurement method, the water vapor generated when the lunar soil is heated passes through the micro-orifice solenoid valve, and the lunar soil water ice content is obtained using the relationship between the water vapor mass flow rate of the micro-orifice solenoid valve and the pressure before the valve. The lunar soil water ice content measurement results of this invention have the advantages of small deviation and high accuracy.

This invention relates to the field of medical device technology and discloses a drug delivery device and method for preventing esophageal stricture after ESD surgery. The device includes a connecting wire, which is a flexible wire with a length of 40mm-80mm, one end fixed to the top of a drug-filled pouch, and the other end free for extending through the esophagus to the outside of the body. A drug-filled pouch, located at the lower end of the connecting wire, has a double-layer structure, including an inner drug-storage cavity and an outer microporous membrane, and is filled with drug. The connecting wire and the drug-filled pouch are connected in series. This application solves the problems of interference between support and drug release in existing devices, easy tissue damage caused by the support structure, easy displacement of the drug delivery unit, and difficulty in removal.

The application discloses a kind of intelligent integrated ventricular drainage device and control method based on multi-source data fusion, the device is monitored in real time by micro bioelectrochemical impedance sensor electrochemical characteristics of drainage fluid, and fuses clinical physiological indicators, constructs 7-dimensional infection risk assessment vector;Infection super-early warning is realized using random forest machine learning algorithm, average early warning time is 8 hours, accuracy is 86.8%;Through adaptive PID control, intracranial pressure is finely adjusted, average control error is ≤2 mmHg, error <2mmHg time ratio reaches 94.5%;Integrating honeycomb micropore design and vibration anti-blocking module, effectively prevent drainage tube blockage, simulation research shows that the system can increase infection prevention rate to 70%, hospitalization time is reduced by 3.2 days, bed rotation rate is increased by 47%, realizes the innovation of clinical management mode from "infection treatment" to "infection prevention", and is assisted by anti-blocking device, pressure regulating device and the like structure, combination improves the overall drainage effect.

The application discloses a multi-directional jet flow self-cleaning gum massage device, and relates to the technical field of physiotherapy devices.The device comprises a handle, a connecting piece and a massage head.The handle is internally provided with a fluid channel, which comprises a main flow channel and a bypass flow channel.The connecting piece is connected to the main flow channel and the bypass flow channel at one end and is provided with a first water outlet and a second water outlet at the other end.The massage head is connected to the connecting piece at one end and is closed at the other end.The side wall of the massage head is provided with a micropore array.The micropore array forms a plurality of micropores in the circumferential direction of the massage head, and each micropore is directed at a different angle.The micropores are used to spray multi-directional scattering jet flows from the micropores of the side wall after fluid enters the internal cavity of the massage head, so as to simultaneously apply fluid pressure to the buccal side, the lingual side and the interdental papilla area of the gums for massage.The application realizes simultaneous coverage of the buccal side, the lingual side and the interdental papilla by one operation, different spraying arcs are used for different gum anatomical areas, the operation time is shortened, the massage efficiency is high, and the massage is highly targeted.

Disclosed is a degradable breast prosthesis shaping mesh (10) having a heterogeneous hierarchical porous structure, comprising a macroporous structure layer (100) and a microporous structure layer (200). The macroporous structure layer (100) and the microporous structure layer (200) are formed by alternately arranging and combining degradable fibers to conform to a breast prosthesis, thereby providing the mechanical properties and tissue adhesion properties required by the mesh (10). The macroporous structure layer and the microporous structure layer cooperate to achieve the function of integrating the prosthesis with the tissue, without the need for an additional suturing fixation device. The overall shape of the mesh (10) is designed as a hemispherical upper cover (11) and a lower end cover rim (12), thereby simplifying the assembly process with the prosthesis and improving the surgical efficiency. The mesh (10) possesses excellent mechanical properties and shaping ability. Moreover, a microporous structure facilitates the adhesion and migration of cells, reduces the rejection reaction of the body, and significantly reduces the incidence of capsular contracture.

A catheter is disclosed that improves control over the shape and extent of agent distribution within biological tissue. The catheter includes a multi-lumen body with a sealed stylet lumen and an agent-delivery lumen terminating in an exposed distal tip portion having a plurality of micropores. Unlike end-port catheters, the micropores provide distributed outflow paths whose hydraulic resistance dominates over heterogeneous tissue resistance, reducing reflux and mitigating leakage into low-pressure structures. The distal tip portion may include multiple axial regions with differing pore densities, pore sizes, or no-pore gaps to tailor infusion geometry, and may be extendable or retractable to selectively expose regions. Additional embodiments may include zonal infusion with independent pressurization, dual-layer pore alignment to vary effective pore size, sensor-based closed-loop control, and microrobot-assisted navigation along straight or curved paths.

The present disclosure relates to a surgical instrument (1), in particular an HF instrument of the forceps structure type or the handle structure type, having an effect device (11) or an effect device region, which has two legs (13) which are movable relative to one another, wherein at least one leg is divided into a distal leg section (15) which is provided for occupation by at least one electrode and a proximal leg section (17) which is free of electrodes or is not provided for occupation by at least one electrode, in the region of which proximal leg section the two legs (13) have a coupling site (5) at which they are coupled to one another in a manner movable relative to one another. The proximal leg section (17) is at least partially composed of a substantially material (19) which is particularly microporous and / or is constructed with or provided with at least partially open, preferably macroporous cavities outside the coupling site (5).

This invention provides a positioning device and construction method for embedded parts of micro-grown foundations for mountain photovoltaic fixed supports. The positioning device includes a frame body, a support and leveling assembly, an orifice positioning assembly, a radial fine-tuning clamping assembly, and an elevation limiting assembly. The orifice positioning assembly is installed in the middle of the frame body and includes a positioning ring seat fixed in the installation hole and a through-type positioning sleeve fixed in the positioning ring seat. Multiple sets of radial fine-tuning clamping assemblies are provided on the positioning sleeve. The frame body is positioned above the orifice of the micro-hole anchor pile. The lower part of the embedded part of the micro-grown foundation is inserted into the micro-grown pile hole through the positioning sleeve, and the upper part of the embedded part is placed inside the positioning sleeve and clamped and adjusted by the multiple sets of radial fine-tuning clamping assemblies. This invention improves the leveling efficiency and stability of the device on different slopes and locally uneven ground, and improves the accuracy of controlling the center position and verticality of the embedded part.

The application discloses a non-contact nasopharyngeal tissue hardness measuring endoscope, and relates to the technical field of nasopharyngeal detection equipment. The non-contact nasopharyngeal tissue hardness measuring endoscope comprises an endoscope body, a probe body and a host control unit; the probe body is an elongated instrument capable of entering the nasopharynx through the nasal cavity, and an optical observation module and a micro-displacement detection module are coaxially integrated on the front end of the probe body in the axial direction; the non-contact mechanical excitation module further comprises a hemispherical porous micro-nozzle and an excitation control unit; the hemispherical porous micro-nozzle is rotatably buckled with the front end of the probe body; the micro-nozzle comprises a hemisphere, the micro-displacement detection module is axially inserted into the middle part of the hemisphere; a spherical shell-shaped air groove is formed in the interior of the hemisphere, and a micro-pore communicating with the air groove is formed on the spherical surface of the hemisphere; the micro-pores are arranged in an annular layered and optical axis staggered manner, so that the biopsy positive rate is significantly improved, the pathological false negative rate is reduced, and the clinical diagnosis adaptability is improved.