83results about How to "Precise positioning" patented technology

The invention relates to the technical field of medical apparatuses, and provides a trigeminal gasserian ganglion compression device. The device comprises a compression balloon catheter assembly (10) and a puncture needle set piece (20), the compression balloon catheter assembly comprises a dilatation balloon (12), a connecting base (16) and a support pipe (14) connected with the dilatation balloon (12) and the connecting base (16), and the dilatation balloon (12), the support pipe (14) and the connecting base (16) are all connected; the puncture needle set piece comprises a puncture needle (22) and a catheter sheath (24), the catheter sheath (24) is left in tissue after puncture for the compression balloon catheter assembly (10) to enter the tissue; the end, close to the support pie (14), of the dilatation balloon (12) and the end, away from the support pipe (14), of the dilatation balloon (12) are each fixedly provided with a metal buckling ring (122), and the metal buckling ring (122) is used for providing developing performance of the dilatation balloon (12) under X rays in the operation process. The trigeminal gasserian ganglion compression device has the good developing performance.

Methods are provided for generating intraluminal prosthetic implants designed to fit onto specific anatomical locations within regions which are stable in terms of their motion in time.

A device for detecting the state of steel-reinforced concrete construction parts, having one or more sensor wires disposed at different distances from a surface of the concrete construction part. The wires are subjected to the corroding influence of the environment of the concrete construction part. The device also includes a measuring instrument, which measures the volume resistance of the sensor wires and an evaluating device, which can supply the measurement values of the measuring instrument either permanently and/or when called up, and which, evaluating from these values, draws conclusions on the depth-dependent corrosion state of the concrete construction part.

A method for locating and visualizing a target (C) in relation to a focal point (F2), in a mammal, particularly a human body, including the steps of forming an ultrasound probe mobile in space, mechanically independent of a treatment system and located by a remote locating system, ensuring the simultaneous recording firstly of an ultrasound image in which the image of the target appears, and secondly of the position of the ultrasound probe, in the recorded ultrasound image, selecting the position of the image of the target to determine the virtual position of the target (C), simultaneously determining firstly the position of the focal point (F2) by means of the remote locating system, and secondly the position of the means displacing the target and/or treatment system, and calculating the displacement values for the displacing means, to cause the virtual position of the target (C) to coincide with the focal point (F2).

The invention discloses a multipurpose joint base. The multipurpose joint base comprises a core shaft and a first sphere body, wherein an axial mounting groove for inserting a workpiece is sequentially arranged at the inner side from one end to the other end of the core shaft; the core shaft is provided with at least one radial first hole; the first hole is used for communicating the mounting groove in the core shaft with the outer side of the core shaft; the sphere body is placed in the first hole; one side, close to the core shaft mounting groove, of the sphere body can partially extend into the mounting groove and does not fall off; the multipurpose joint base is further provided with a first elastic piece; the first elastic piece is axially stopped and is tightly sleeved at the outer side of the core shaft; and the inner side of the first elastic piece is tightly ejected against one side, opposite to the core shaft mounting groove, of the sphere body. When the multipurpose joint base disclosed by the invention is used, only the workpiece needs to be directly inserted and an outer sleeve does not need to be pulled, so that time and labor are saved and the positioning of the workpiece is accurate; and a slide pin realizes the function that the workpiece is automatically popped out, and the multipurpose joint base is more convenient to use and is more time-saving and labor-saving.

The invention relates to a shoe tree positioning device, comprising a fixing base and a shoe tree. The device is characterized in that the fixing base is provided with a front-back positioning clamping mechanism and a left-right adjusting clamping mechanism, and a shoe tree placing space is formed between the front-back positioning clamping mechanism and the left-right adjusting clamping mechanism. The front-back positioning clamping mechanism and the left-right adjusting clamping mechanism can change size of the shoe tree placing space through adjusting relative positions thereof.

The invention discloses a radium welding carrier mechanism for radium welding of a mobile phone frame and a middle plate. The mechanism comprises a radium welding carrier, a radium welding carrier sliding block and a radium welding carrier sliding rail, wherein the radium welding carrier sliding block is installed at the bottom of the radium welding carrier, and the radium welding carrier slidingrail is clamped with the radium welding carrier sliding block; and the radium welding carrier sliding block is connected to a radium welding carrier moving module, the radium welding carrier moving module is connected to a radium welding carrier moving motor, and the radium welding carrier comprises a radium welding carrier mounting frame, a cover plate assembly and a carrier assembly, wherein thecover plate assembly and the carrier assembly are connected to the radium welding carrier mounting frame. According to the mechanism, accurate positioning is carried out on the frame and the middle plate, and the mechanism has the advantages of being accurate in positioning and high in efficiency.

The invention provides a perfusion medicine balloon which comprises a balloon body, a double-cavity pipe, a pushing rod, a guide wire, perfusion holes, a developing marker ring and a medicine coating. The multiple perfusion holes are formed in the front end and the rear end of the balloon body, and after the balloon body is expanded, blood can reach the far ends of lesions through the perfusion holes. Some heart events such as severe myocardial ischemia and hemodynamics disorder, caused by long-time balloon expanding in the intervention process, of high-risk patients with the multiple lesions, the poor left heart function and the like can be avoided. Compared with a traditional medicine balloon, when the perfusion medicine balloon is used, full filling and expanding time of a medicine elution balloon in the blood vessel is prolonged, and medicine makes full contact with the blood vessel wall, and can play a full role; before treatment is carried out, hemodynamics influence exists, and the patients with poor heart functions, low ejection fractions, and even far-end great vessels and left main coronary arteries can be treated through the medicine balloon.

The invention discloses a mail information security control method, which can solve the defect that a leakage source cannot be effectively positioned in the prior art, and comprises the following steps: acquiring account information of an account for looking up a mail and/or terminal information of a terminal; and embedding the account information and/or the terminal information into the mail content of the mail as traceability information. The invention further provides a mail information security control device, computer equipment and a computer readable storage medium.

The bezel (1) is interchangeable via a bayonet device. The shoulder (11) of the middle part (12) is provided with a circular groove (14) and at least two sinks (15) opening out partially into said groove (14). The bezel (1) includes at least two feet (2) positioned to engage in the sinks (15), said feet (2) each including a notch (4) open radially at the emergence of the sinks (15). A locking ring (20) provided with an outer member (21) for rotational manipulation, is positioned in the groove (14), one edge (23) of said ring (20) having a substantially equal thickness to the aperture of the notches (4) and including recesses (24) for the feet (2) to pass and the other edge (25) including a gorge (26) facing a gorge (16) of the middle part (12), the two gorges (16; 26) housing a click spring (30) of the ring (20).

The invention discloses a wheel centering device for vehicle testing and a centering method. The wheel centering device comprises dynamometers, positioning mechanisms and a controller, wherein the dynamometers and the positioning mechanisms are electrically connected with the controller respectively; the number of the dynamometers is four, and the relative positions of the four dynamometers are respectively matched with the relative positions of four wheels of a vehicle; the central axis of a rotating hub of each dynamometer is located below the ground, and the top part of each rotating hub is located above the ground; the number of the positioning mechanisms is four, and the four positioning mechanisms are located on the outer sides of rotating hubs of the four dynamometers respectively; and each positioning mechanism comprises a laser transceiving assembly and a shading assembly, the laser transceiving assembly is installed on the outer side of the corresponding rotating hub and located on the central axis of the corresponding rotating hub, and the shading assembly is installed in the center of a vehicle hub. Compared with the prior art, the vehicle centering device is simpler in structure and more accurate in positioning.

The invention provides a tracing and analyzing method for urban air pollutants. The tracing and analyzing method comprises the following steps: collecting monitoring data of various pollutant concentrations in the air by monitoring points arranged in a city; calculating a daily prevailing wind direction and major pollution time periods by combining the monitoring data, and air quality indexes of acceptor points and neighboring country stations; selecting mini-type stations in an upwind wind direction and adjacent four wind direction regions according to the daily prevailing wind direction andthe major pollution time periods; carrying out time correction on the selected mini-type stations; combining the mini-type stations subjected to the time correction and data of the acceptor points tocalculate sequencing indexes; selecting the mini-type stations with the front k sequencing indexes and carrying out empathized analysis; calculating a concentration contribution rate from a mini-typestation periphery pollution source to the corresponding mini-type station and returning back front N pollution sources with the highest concentration contribution rate. According to the tracing and analyzing method provided by the invention, the contribution rate of the pollution source to the mini-type station can be directly displayed and pollution degrees of the different pollution sources aredisplayed, so that accurate positioning of the pollution sources is realized.

The invention relates to an auxiliary support for U-shaped pipe welding. The support comprises an upper-layer cross beam and a lower-layer cross beam; the upper-layer cross beam is connected with thelower-layer cross beam through stand columns on two sides; the upper-layer cross beam can move up and down along the stand columns on the two sides; each cross beam is divided into two parts in the horizontal direction, the two parts are connected through multiple connecting rods, and the horizontal distances among the connecting rods are adjustable; to-be-welded U-shaped pipes are fixed by the connecting rods in the width direction; the U-shaped pipes are clamped by the aid of the two-part cross beams in the thickness direction; and a horizontal platform is fixed on the upper side of the cross beam, is smooth and is used for placing a welding machine head, so that the welding machine head is ensured to be aligned to the welding position. The auxiliary support is relatively simple in structure, high in accuracy and high in practicability.

The invention relates to the textile machinery technology, in particular to a segment-driven automatic single-tool silk screen printing device. The device comprises an oval rail and printing table plates, wherein two adjacent printing table plates are connected through a rigid connection rod; a driving device is arranged on the inner side of the oval rail; a single-tool scraper-printing and ink-returning device is arranged right above a printing table plate in a working station; the driving device and the single-tool scraper-printing and ink-returning device both are electrically connected to a control device. According to the segment-driven automatic single-tool silk screen printing device, the two adjacent printing table plates are connected through the rigid connection rod, so that the pulling force and the pushing force can be transmitted; the device has rigidity, so that the problem that the positioning is inaccurate, caused by the flexibility of a chain can be overcome; the driving device is driven by a servo motor; by integrating the control of a programmable controller with the feedback of a photoelectric switch position, the device is high in automation degree and is accurate to position; two main actions of scraper printing and ink returning of printing can be implemented by the single tool; the printing process is simplified; the structure is simplified; the manufacturing process is simple; the device cost is reduced; the scraper printing and ink returning are implemented by using one action; the printing speed is high; the production efficiency is improved.

A belt feeding unit includes a rotatable belt; a first stretching roller; a second stretching roller including a stretching portion; a supporting portion for supporting the stretching portion while permitting movement of opposite end portions thereof up and down; a rotatable portion coaxial with the second stretching roller; wherein when the belt shifts in the longitudinal direction, the belt contacts the rotatable portion to rotate the rotatable portion, thus tilting the second stretching roller about the supporting portion relative to a rotational axis of the first stretching roller.

The invention provides a tool adjusting mechanism of cutting equipment. The tool adjusting mechanism comprises a tool rest and a tool, the tool is arranged on the tool rest in a linear movement manner, and the tool is positioned on the tool rest through a tool locator. The tool locator comprises a long rack, a positioning rack block and a drive assembly. The long rack is fixed to the tool rest andextends in tool moving direction. The drive assembly is arranged on the tool. The positioning rack block is connected with the drive assembly. The positioning rack block is driven by the drive assembly to be engaged with or separated from the long rack. According to the tool adjusting mechanism, through the tool locator, rapid and accurate positioning of the tool on the tool rest are achieved.