33results about How to "Avoid puncture risk" patented technology

The invention provides an automatic positioning method and device of an indwelling needle in puncturing a vein vessel. The automatic positioning method comprises the following steps: collecting image data of a target vessel, wherein the image data contains a horizontal coordinate value of the target vessel in an image coordinate system; according to the set horizontal coordinate value and a first set step length of the horizontal coordinate value in a longitudinal coordinate direction, traversing pixels of the image data in a set window, and acquiring image characteristics of the target vessel in the image data; according to the image characteristics of the target vessel, determining a coarse detection center position of the target vessel; taking a horizontal coordinate determined according to the horizontal coordinate of the coarse detection center position as a searching point, searching longitudinal coordinate values of upper and lower vascular walls in the longitudinal coordinate value of the coarse detection center position; and according to the searched longitudinal coordinate values of the upper and lower vascular walls, determining a range where a puncture point of the target vessel is located and a depth value of the target vessel. The automatic positioning method and device can automatically position a puncture position of a puncture mechanism in the target vessel with high accuracy, lower the manpower training cost of a hospital and prevent sticking risk by artificial puncture at the same time.

The invention discloses a three-dimensional atrial septum puncture system. The three-dimensional atrial septum puncture system comprises a three-dimensional mapping and three-dimensional positioning assembly, an atrial septum puncture needle, a sheath catheter and an expanding tube, wherein the three-dimensional mapping and three-dimensional positioning assembly comprises a three-dimensional guidewire and a guide wire connecting wire, and at least two electrodes are arranged at each of the far end and the near and of the three-dimensional guide wire; the guide wire connecting wire is connected to the near end of the three-dimensional guide wire; at least two electrodes are arranged at each of the far end of the atrial septum puncture needle, the far end of the expanding tube, and the farend of the sheath catheter. For the three-dimensional atrial septum puncture system provided by the invention, under the condition that X-ray fluoroscopy/image is not used, the situation that whetherthe positions of the three-dimensional guide wire, the expanding tube, the sheath catheter and the puncture needle reach the puncture position or not can be clearly observed, accurate positioning andpuncturing are carried out, and the puncture risk caused by the fact that only the X-ray image is adopted, so that the puncture position can not be intuitively judged, is avoided.

The invention provides an ultraviolet light curing mask plate and a manufacturing method and a curing method therefor. The ultraviolet light curing mask plate comprises a mask plate substrate; a blocking region and a light-transmitting region are arranged on the mask plate substrate; the blocking region is corresponding to a liquid crystal region of a liquid crystal display panel; the light-transmitting region is corresponding to a region wherein a sealant of the outer frame of the liquid crystal display panel is located; the light-transmitting region allows ultraviolet light to penetrate through; at least one light path changing apparatus is arranged in the light-transmitting region; and the light path changing apparatus can change the light path of ultraviolet light. The ultraviolet light curing mask plate has the advantages as follows: the light path changing apparatus is added to the ultraviolet light curing mask plate, so that the ultraviolet light which perpendicularly irradiates to the ultraviolet light curing mask plate can irradiate the region, covered with metal lines, of the liquid crystal display panel completely and uniformly, thereby fully curing the sealant and avoiding puncture risk.

The invention discloses an easy-to-wash movable stoma bag which comprises a bag body; a bottom plate is arranged on the inner side surface of the bag body, which is contacted with the skin of a human body; an opening for receiving a stoma hole is formed on the bottom plate; and a urine outlet is formed at the bottom end of the bag body; the easy-to-wash movable stoma bag is characterized in that a connection hole provided with a sealing cover is arranged on the outer side surface of the bag body and positioned right above the front of the opening on the bottom plate; and a detachable movable urine receiving bag is sleeved at the urine outlet. The stoma bag is easy to wash, allows excrement to be removed without dirting the hands, keeps clean and sanitary, has no bad odour or pollution, reduces infection to the skin around the stoma, and is simple and convenient in nursing.

The invention discloses a guiding wire coiled pipe device for precise positioning and guiding in the field of medical apparatuses. The device includes a shell which is of a hollow structure and is made of transparent plastic, the shell is spliced by a left half shell body and a right half shell body, and a guiding passage which is spirally distributed and used for placing guiding wires is formed in an inner cavity of the shell; a guiding wire outlet end is also formed in the shell, a roller for conveying the guiding wires is rotatably installed at the guiding wire outlet end, a pointer is arranged on one side of the roller, precise ruler scales are arranged around the pointer, and a groove for placing the guiding wires is formed in the middle of the roller; a guiding head and a guiding platform used for fixing the guiding head are fixed to the portion, in front of a conveying wheel, of the guiding wire outlet end, the guiding head and the guiding platform are provided with guiding holes running through the guiding head and the guiding platform, and the guiding wires penetrate through the guiding holes slidably. The structure is simple, and positioning of the guiding wires is precise.

The invention discloses intra-arterial medical equipment, namely a carotid artery stent system, which belongs to the field of medical apparatus and instruments. The carotid artery stent system comprises a carotid artery stent and a conveyor, wherein the carotid artery stent is implanted into a pathological blood vessel spot through the conveyor; the carotid artery stent is precompressed into an outer sheath of the conveyor, and is released to a pathological region through withdrawing the conveyor. The carotid artery stent system is characterized in that the carotid artery stent is a self-expansion laser-carved nickel-titanium superelastic alloy stent, and a stent release condition is of a mesh cylinder structure composed of multiple V unit structures, and opposite V units form a diamond mesh, and the stent of the mesh cylinder structure consists of three sections, wherein every three diamond meshes of big mesh sections at the two ends have a cross structure, and every two diamond meshes of small mesh sections in the middle have a cross structure, and the stent shrinks in a peak-to-valley manner when being bent; the top end of the conveyor is of a biconical head end shape. Compared with the prior art, the stent has the advantages of more excellent blood vessel adherence performance and flexibility, good non-deformability and good durability and the like by utilizing the design characteristics of the stent itself.

The present invention relates to the technical field of medical devices, in particular to a free-type steelless needle precise control indwelling infusion system, comprising an infusion bag assembly connected in series by an infusion extension tube, an infusion extension tube assembly and an indwelling infusion hose assembly; The infusion bag assembly includes an external pressure box and an elastic infusion bag; the infusion extension tube assembly includes an infusion extension tube and an attached fine speed control valve, a precision drug filter, a positive pressure connector type needle-free drug feeding port and a Luer connector; The tube assembly includes a positive pressure connector, a steel needle with a side hole, a direct-current tube and an infusion hose connected at one end. The side wall of the direct-current tube extends obliquely with an infusion branch tube. The anti-stab locking component is provided on it to wrap the needle tip when it is separated from the direct-current tube; the present invention fundamentally eliminates the risks existing in the existing infusion system, provides patients with a more reliable and safer infusion method, and ensures that medical staff The operation is safe, eliminating the risk of puncture injuries and infection.

The invention discloses a coating-rolling composite waterproof system structure suitable for an underground side wall. The coating-rolling composite waterproof system structure comprises a coating waterproof layer and a rolling material waterproof layer. The coating waterproof layer is a special thick coating type water-based asphalt waterproof coating for the side wall, and the rolling material waterproof layer is a high-strength anti-puncture asphalt-based self-adhesive waterproof rolling material. According to the coating-rolling composite waterproof system structure suitable for the underground side wall, the technical advantages of the special thick coating type water-based asphalt waterproof coating for the side wall and the high-strength anti-puncture asphalt-based self-adhesive waterproof rolling material are fully exerted, the special thick coating type water-based asphalt waterproof coating for the side wall, the high-strength anti-puncture asphalt-based self-adhesive waterproof rolling material, a bottom plate and a top plate throwing-joint part are firmly bonded together, a full-interface closed waterproof structure is formed, the leakage problem caused by infirm bonding of the joint part due to the material type difference is effectively avoided, and the risk that the waterproof rolling material on the side wall slides and is punctured in the subsequent backfilling process can be avoided.

The invention relates to a glass curtain wall with a vacuum thermal baffle. The glass curtain wall with the vacuum thermal baffle comprises hollow glass and the vacuum thermal baffle installed in the interlayer space of the hollow glass; and the hollow glass with the vacuum thermal baffle is only installed on the area, needed for sun-shading and heat-insulating, on the support structure of the glass curtain wall, so a decorative sheet or a building wall does not need to be installed for sun-shading along the inner wall of the glass curtain wall. The indoor space is not occupied, and the heat-insulating effect is better. The hollow glass is the double-layer hollow glass, and the vacuum thermal baffle is adhered to the inner wall of the outer glass of the hollow glass, so the glass fragments are prevented from falling during the self-explosion of the outer glass, and the using safety is ensured.

The invention discloses an ostomy bag for sickbed nursing and relates to the technical field of medical apparatus. The ostomy bag comprises a bag body, a bottom plate arranged on the side surface of the bag body and an opening formed in the bottom plate, wherein a flushing fluid connecting tube equipped with an adjusting valve communicates with the upper part of the bag body, and the bottom of the bag body communicates with a negative-pressure suction tube; an adjusting valve is arranged between the negative-pressure suction tube and a connected negative-pressure source. The ostomy bag can solve the problems that the ostomy bag used by a bedridden patient after surgery in a hospital gets full easily, cannot be kept clean at any time, soils hands of medical workers and pollutes a bed sheet when urine and stool are cleaned.

The invention discloses a chilled fresh poultry storage and transportation freshness safety warning card which comprises a shell provided with a sealed containing space, a clamping groove is formed in the outer side of the shell, and at least part of the shell is transparent and used for observing the interior of the containing space; the rubber layer is attached and fixed to the inner wall of the shell; the ejector pin device comprises an ejector pin and a protective cover, the ejector pin is located in the clamping groove range and comprises a pin handle and a pin body, the pin body penetrates through the shell, and the end, away from the pin handle, of the pin body is completely embedded into the rubber layer; the protective cover is clamped in the clamping groove and covers the needle handle; the bacterial liquid bag comprises a sealed bag body made of a plastic material and bacterial liquid contained in the bag body, and the periphery of the bag body abuts against the rubber layer; and the filter paper adsorbs a developing enrichment liquid, and the filter paper is accommodated in the accommodating space and is clamped between the rubber layer and the bag body. Compared with the prior art, the chilled fresh poultry storage and transportation freshness safety warning card is high in yield, good in reliability and convenient to use.

The invention provides a single-person bagging device. The single-person bagging device comprises a mounting frame, an opening assembly arranged on the mounting frame and a placing frame arranged below the opening assembly, wherein the opening assembly comprises two opening units which are oppositely arranged; each opening unit comprises a rotating shaft, a torsion spring and an opening piece; therotating shafts are arranged to rotate in the circumferential direction of the rotating shafts; the opening pieces are arranged on the rotating shafts; the opening pieces of the two opening units correspond to each other to jointly open an opening of a bag; and the torsion springs act on the rotating shafts so as to fix the positions of the rotating shafts in the circumferential direction of therotating shafts. According to the single-person bagging device, the bag is opened by the opening pieces of the two opening units, manual opening is not needed, bagging and wire bagging can be completed under the operation of a single person, so that manpower is saved, the utilization rate of manpower resources is improved, the risk that the bag is punctured by wires is avoided, and the safety is good.

The invention discloses an indwelling needle installing clip assembly. The indwelling needle installing clip assembly comprises a base and a door-shaped elastic piece, and the door-shaped elastic piece comprises a first side plate, a second side plate and a third side plate, wherein the first side plate and second side plate are opposite to each other, and the third side plate is used for connecting the first side plate with the second side plate; the base is provided with a locating groove for installing the door-shaped elastic piece, and the locating groove is provided with a first side wall, a second side wall and a third side which cooperate with the first side plate, the second side plate and the third side plate respectively; the first side wall and the second side wall are providedwith first needle penetrating holes for an indwelling needle to penetrate through respectively, and a second needle penetrating hole is formed in the position, corresponding to the first needle penetrating hole in the first side plate, of the first side plate; a baffle for blocking the first needle penetrating hole in the second side plate is arranged at the position, corresponding to the first needle penetrating hole, of the second side plate, and an avoidance opening is also formed in the second side plate, located at one side of the baffle, and used for the indwelling needle to penetrate through when the door-shaped elastic piece is bent to make the baffle move away from the corresponding first needle penetrating hole. According to the indwelling needle installing clip assembly, the elastic piece is fixed on the base when the indwelling needle is installed, the installation is convenient and quick, and the risk that installers are stabbed by indwelling needles can be effectively avoided.