2254results about How to "Pass smoothly" patented technology

A method of performing percutaneous transforaminal endoscopic lumbar surgery on a patient, includes the steps of creating an opening in the patient's skin, passing at least one tubular cannula through the opening so as to create a soft tissue tunnel, placing a semi-tubular spreader over the at least one tubular cannula inside the soft tissue tunnel, placing a flat blade spreader into an opening formed by the semi-tubular spreader, dilating the opening by spreading apart blades of the flat blade spreader, inserting bone grafts through the opening and into an intervertebral space of the patient.

The invention provides a lead-free silver conductive paste used for positive electrode of solar battery and a preparation technique thereof. The paste comprises the following materials by weight percentage: 65 to 85 percent of silver powder, 2 to 8 percent of lead-free glass powder, 10 to 25 percent of organic carrier and 0.1 to 3 percent of additive. The paste adopts the lead-free glass powder of Si-B-Bi-Al-Ti-Zn-O series to replace the traditional lead-bearing glass powder; and the series glass powder has lower softening point, can lead the silver electrode to have good adhesive force after sintering, and ensures the silver electrode to be well contacted with a silicon substrate. In addition, zinc resinate is used as the additive in the invention, not only can well improve the printing performance of the paste, but also can improve the electrical property of the electrode.

A recovery walking aiding robot belongs to walking aiding robots and recovery machinery, solves the problem that an existing recovery walking aiding robot is inflexible to pass through the narrow environment, simple in motion function and high in requirements for operation flexibility of users, and well meets actual recovery requirements. The recovery walking aiding robot comprises a handrail frame, a connection frame, a flat type microcomputer, an S-shaped support rod and a base plate, wherein the handrail frame is fixed with the connection frame through a linear bearing, the flat type microcomputer is installed on the connection frame through a support seat, the connection frame is arranged on the base plate through the S-shaped support rod, a control box is arranged on the base plate, and an environmental self-adaption module, a motion intention identification module, a speed control module, a falling prevention module and a motor driving module are loaded on the flat type microcomputer. The recovery walking aiding robot can automatically adapt to complex external environments, can achieve the functions of detecting and avoiding obstacles, preventing sliding and the like, provides falling prevention, and solves contradiction between dyskinesia of users and operation requirements of the robot.

The invention discloses a flexible switching system for a vehicle welding production line. The flexible switching system is used for solving the problems of low operating efficiency and poor universality in a current vehicle welding production line. The flexible switching system comprises a piece supplying mechanism, a transition track, a storage mechanism, a rotating platform, a trolley, a steering track switching mechanism and a lifting track switching mechanism, wherein the piece supplying mechanism and the rotating platform are arranged on two ends of the transition track, the storage mechanism is arranged on two sides of the transition track, the steering track switching mechanism is mounted in a joint position of the storage mechanism and the transition track, the lifting track switching mechanism is arranged on the transition track, and the trolley can move among the piece supplying mechanism, the storage mechanism and the rotating platform. According to the flexible switching system, an operating speed of a welding production line is improved, and synchronous operations of the piece supplying and the welding are realized. The flexible switching system is suitable for the mixing-line production of various vehicles, so that the cost on equipment development and operation is lowered, and the efficiency of welding production is improved.

A cylindrical steam reforming unit comprising a plurality of cylindrical bodies consisting of a first cylindrical body, a second cylindrical body and a third cylindrical body of successively increasing diameters disposed in a concentric spaced relation, a radiation cylinder disposed within and concentrically with the first cylindrical body, a burner disposed in the radial central portion of the radiation cylinder, and a reforming catalyst layer with a reforming catalyst filled in a gap between the first and second cylindrical bodies, wherein a CO shift catalyst layer and a CO removal catalyst layer are disposed in a gap between the second and third cylindrical bodies, the CO shift catalyst layer being formed in a gap with the direction of flow reversed at one axial end of the reforming catalyst layer and through a heat recovery layer of predetermined length. According to this reforming unit, without internally disposing a heat insulation layer, a cooling mechanism or the like, the reforming catalyst layer, CO shift catalyst layer, and CO removal catalyst layer can be integrated, achieving various useful effects, including size and weight reductions and the shortening of startup time.

A suspension structure for a wheelchair generally includes movable arm that serve to connect driving wheels with frame of a wheelchair, sliding unit is further provided for enabling the movable arm to movably connect with a front cantilever of the wheelchair. By such arrangements, in case that the wheelchair of the present invention encounters a raised ground, or similar barriers of the like, the front cantilever will work with the movable arm to raise front jockey wheels, whereas the driving wheels firmly catches the ground, such that enables the wheelchair to the pass the barrier smoothly without difficulties.

The invention discloses an attack detection and response method and a device of a WEB page, aiming at filtering the web page and protecting a client-side from the attack of malicious contents. The method comprises the following steps: intercepting the response message returned to the client-side by a WEB server, acquiring the response header and the response body in the response message, carrying out scanning detection on the response body, replacing the response body with prompt messages when the response body is detected to contain malicious contents, combining the prompt information with the response header and sending to the client-side. Compared with the prior art, the invention realizes the aim of precisely filtering the WEB page containing malicious contents such as Trojan horses and viruses and the like, protects the client-side from the attack of malicious contents and avoids interception of normal web page contents.

The invention relates to an electrostatic spinning method and a nanometer fiber/anti-sticking non-woven fabric composite filter material prepared through the electrostatic spinning method. Multi-needle electrostatic spinning is adopted in the electrostatic spinning method, and needles of multi-needle electrostatic spinning are insulated from one another. The prepared nanometer fiber/anti-sticking non-woven fabric composite filter material is formed by overlapping and compositing materials for overlapping from bottom to top according to the low-to-high sequence of filtering efficiency of a filtering material, the face, with electrostatic spinning fiber, of each layer of material for overlapping faces upwards, the uppermost layer of material for overlapping is covered with anti-sticking non-woven fabric, and therefore it is ensured that the top layer and the bottommost layer are both anti-sticking non-woven fabric layers; of every two adjacent layers of materials for overlapping, the filtering efficiency value for particles with grain size of 0.02 micron to 10 microns of the upper layer is 1.03-1.3 times that of the lower layer, the number of overlapping layers of the materials for overlapping ranges from 2 to 6, the anti-sticking non-woven fabric and the interlayer structure with electret effect nanometer fibers arrayed at intervals are formed, and the nanometer fiber/anti-sticking non-woven fabric composite filter material is formed; the filtering efficiency of the nanometer fiber/anti-sticking non-woven fabric composite filter material for particles with grain size of 0.02 micron to 10 microns reaches 99.999% or higher, and the pressure resistance is kept between 10 Pa and 30 Pa.

A window covering support rack includes an elongate rod having opposite ends mounted to and supported by end brackets that are fixed to a wall and an intermediate bracket fixed to the wall between the end brackets and supporting the rod. The intermediate bracket includes an L-shaped plate having an end section fixed to the wall and a horizontal section extending from the rod section and having a free end forming a recess for partially receiving and supporting the rod therein. A retention wall is formed on the horizontal section of the intermediate bracket for stably retaining the rod in the recess. A plurality of hanger rings is fit over and movable along the rod. Each hanger ring has a side opening aligned with the horizontal section of the intermediate bracket to allow the hanger ring to pass over the intermediate bracket.

The present invention provides an apparatus and method of cultivating a plant using a subirrigating method. The apparatus includes a culture medium cell constructed in such a manner that artificial culture medium is packed in a packing material having excellent ventilation and moisture absorptivity to be shaped in a predetermined form, a planting pot which contains the culture medium cell and has holes through which a sufficient amount of nutritive solution and air pass, a cooling/heating device set in the lower portion of the culture medium cell to cool or heat the root of the plant, and a nutritive solution supplying device for automatically supplying the nutritive solution to a plant planted in the culture medium cell placed a distance from one or more nutritive solution containers, thereby supplying the nutritive solution and air to the root of the plant continuously to maintain the optimum growth environment, forcing the plant growth.

The loose-flange type fitting according to the present invention is closely sealed with an elastic gasket whose both the sides and outer circumferential face are pressed against a pipe collars and a reinforcing ring so that the seal contact therebetween increases in degree together with rising of a tubeside internal pressure, in which the seal material comprising an annular elastic gasket, a metallic reinforcing ring disposed on the outer circumferential side of the elastic gasket and the inner circumferential face of the elastic gasket having substantially a V-shaped cross-section and the axial width of the gasket being broader than that of the reinforcing ring under non-compression conditions.

A highly reliable semiconductor device which is not damaged by local pressing force from the outside and in which unevenness of a portion where an antenna and an element overlap with each other is reduced. The semiconductor device includes a chip and an antenna. The chip includes a semiconductor element layer including a thin film transistor; a conductive resin electrically connected to the semiconductor element layer; and a sealing layer. The sealing layer in which a fiber body is impregnated with an organic resin covers the semiconductor element layer and the conductive resin, and has a thickness of 10 to 100 μm. The antenna has a depressed portion and is electrically connected to the semiconductor element layer through the conductive resin. The chip is embedded inside the depressed portion. The thickness of the chip is equal to the depth of the depressed portion.

The invention discloses a casting-curing insensitive high-explosion-heat explosive which comprises the following components in parts by weight: 65 parts of hexogen, 21.5 parts of aluminum powder, 6-8 parts of binder, 2-3 parts of insensitive agent, 2.5-3.2 parts of plasticizer and 0.5-0.7 parts of curing agent. The hexogen is subjected to grain composition to improve explosive energy. The invention further discloses a preparation method of the explosive, which comprises the steps of batching, mixing, vacuum treatment and vacuum casting, and heating curing. The explosive has a higher explosion heat value, has good viability in hazardous environments such as shock, high temperature, bullets and detonation waves, and has the characteristics of high work capacity and high safety; and compared with PBXN-109 (plastic-bonded explosive-109), the solid content is higher, and the overall properties are equivalent.

The invention provides a driverless intersection path planning method, system and device and a storage medium. The method comprises the steps: collecting an image in front of a vehicle, and determining a driving environment in front of the vehicle according to the image; detecting whether there is a traffic signal light and a traffic police in the image or not if the driving environment is an intersection environment; determining a traffic police command according to the gesture of the traffic police if the traffic police is detected in the image; determining a signal light command according to the image of the traffic signal light if the traffic signal light is detected in the image; determining the path planning of the vehicle at the intersection according to the traffic police command and/or the signal light command, and further performing the path planning decision making through a trained control model. By adopting the solution of the invention, when there is a road traffic signalfailure or congestion requiring the traffic police to direct traffic, the traffic police gesture can be accurately identified in real time and combined with traffic lights and traffic police gesturesto plan a suitable path to help the driverless vehicle pass the intersection smoothly.

An endoscope system includes an endoscope and an insertion unit guide member. The endoscope has an elongated insertion unit whose bending section adjoins a distal section thereof. The insertion unit guide member comprises a plurality of tubular members to be placed in a pipe. Each of the tubular members has a guide channel having a predetermined diameter that permits other tubular member or the insertion unit to smoothly pass through the guide channel. The plurality of tubular members has predetermined degrees of flexibility and predetermined lengths. At least one of the tubular members has a member that changes the advancing direction in which the insertion unit is advanced through the guide channel.

The invention relates to a feeding method for a hole protecting pipe for a soft coal seam gas extraction hole. The feeding method is characterized in that an epoxy resin adhesive is used for filling sieve pores of the hole protecting pipe before the hole protecting pipe is fed into a drill hole, air with a certain pressure is pressed into the hole protecting pipe in the process of feeding the hole protecting pipe into the drill hole, the air flows into the drill hole through a vent hole arranged at the top end of the hole protecting pipe, and high-speed air currents discharge coal dusts from an orifice along the hole protecting pipe and a gap of the wall of the drill hole. After the hole protecting pipe is fed into the bottom of the hole, an epoxy resin adhesive dissolving agent is injected into inner holes of the hole protecting pipe for dissolving the expoxy resin adhesive in the sieve pores so as to extract the gas. The feeding method is convenient in operation, can overcome the problem that the hole protecting pipe is difficult to feed into the drill hole due to the residual coal dusts in the gas extraction hole and local hole collapse, and has the advantages of long feeding distance of the hole protecting pipe, thereby ensuring the higher concentration and high flow of the soft coal seam gas extraction. The feeding method is particularly suitable for soft coals and very soft coal seams in which hole collapse easily occurs.

This present invention provides a surgical rivet, a rivet deployment actuator, a rivet cutting instrument and a method for securing a prosthetic valve to the heart which has the potential to substantially decrease the ischemic time required for valve implantation and allow larger prostheses to be inserted in small annuli. The surgical rivet is comprised of two flexible preformed elements capable of assuming a preconfigured shape once it is delivered and secured with the deployment actuator. The deployment actuator is a reusable instrument that lowers the prosthesis to the annulus, secures the prosthesis with an “O” ring and cuts and deploys the flexible elements so that they rest on the sewing ring of the prosthetic valve. The present invention eliminates the tedious and time-consuming tasks of tying sutures which may be particularly difficult in small annuli. It also automatically cuts the sutures to the appropriate length. The use of single rivets allows for expansion to the annulus and insertion of one full size larger (2 mm) prosthesis than what is possible using the classical horizontal pledget mattress technique. This feature is of particular importance in small annuli where prosthesis/patient mismatch can lead to suboptimal long term results. ¹

A centralizer for use in oil well wireline toolstrings comprising a central mounting rod and floating spring mechanisms between which a number of jointed centralizer arms are connected. The jointed centralizer arms have a section with a concave profile disposed near to their pivot points so that a closing force acting on the arms acts at a greater distance from the pivot, thereby increasing the closing moment and making the centralizer easier to draw into a borehole with a narrow cross-section. The floating spring mechanisms also have a linkage to the presser plate of the spring such that an axial force pulling the centralizer apparatus into a borehole is transferred directly into a force on the spring, thereby reducing the opening moment the springs exert on the centralizer arms.

An insertion instrument which is connected to a manipulating head grip is composed of an elongated flexible tube section, an articular section and a rigid tip end section in series from a proximal end which is connected to the manipulating head grip. The articular section can be flexed in an arbitrary direction by way of a flexion control means which is provided on the manipulating head grip. A flexible tube straightening means is provided internally of the flexible tube section to straighten the same into a rectilinear form. The flexible tube straightening means is activated into a straightening action in interlinked relation with a flexing operation of the flexion control means.

The invention relates to an automatic generating system which uses the vehicle decelerating plate or decelerating belt, wherein it comprises: a decelerating plate or decelerating belt, non-liner spring, transmission device, generator and a frame; said transmission device comprises a tooth rod whose top via hinge and decelerating plate or belt to realize movable connection, the tooth bar at the end of tooth rod, a ratchet meshed with tooth bar, the gear couple coaxially arranged with ratchet, and a generator; the upper part of frame is the decelerating plate or the decelerating belt embed chamber; the middle part is the tooth rod motion guide chamber; and the lower part is the generating accumulating chamber. The invention can effectively utilize the energy consumed by decelerating plate, to generate electricity. And the flexible system is mounted under the decelerating plate, to improve the safety and service life of vehicle.