36results about How to "Reduce the difficulty of piercing" patented technology

The present invention relates to a superficial vein puncture auxiliary system guided by infrared and ultrasonic positioning, characterized in that the puncture system includes an infrared guiding unit and an ultrasonic positioning unit, and the infrared guiding unit includes an infrared light source, a signal acquisition unit, and an infrared image processing unit , an image projection unit, an infrared image display unit, the ultrasonic positioning unit includes a high-frequency ultrasonic probe, an ultrasonic image processing unit, an ultrasonic image display unit, and a puncture needle connecting frame fixed on the ultrasonic probe. The system can not only locate and display superficial veins through infrared imaging, but also identify the depth of veins through the ultrasonic unit under the guidance of infrared images, so as to realize real-time observation of needle insertion angle and depth of puncture needles, reducing the risk of venipuncture. Difficulty, improve puncture accuracy.

A construction method for a bottomless formwork of a concrete protecting wall of a slide-resistant pile includes following steps: firstly, welding and bundling reinforcing steel bars on the lower side of the poured protecting wall; secondly, erecting the formwork and reserving a feeding opening at the upper end of the formwork; thirdly, using river sand to fill and level up the bottom of a poured shipping space to replace a bottom formwork of the poured shipping space; and fourthly, pouring. Rapid construction of the bottomless formwork of the slide-resistant pile can be realized. The clean river sand is used to replace a wood formwork or a combined steel formwork to be used as the bottom formwork of the protecting wall, input of the formworks is reduced, construction efficiency of the protecting wall is increased, exposed time of an excavated surface of a pore wall is shortened, and the protecting wall is poured fast. A rapid pore-forming target can be realized, and the river sand can be recycled and is economical and practical.

The invention discloses a movable support rotary hydraulic control loop of a winding machine. The loop comprises a three-position four-way reversing valve, two balance valves and a two-position four-way reversing valve. The three-position four-way reversing valve is respectively connected with inlet ends of a liquid inlet pipeline, a liquid return pipeline, a first balance valve and a second balance valve. The three-position four-way reversing valve is positioned on a Y-shaped middle position machine when being in middle position. A control end of the first balance valve is connected with an inlet end of the second balance valve through a one-way throttling valve; and a control end of the second balance valve is connected with an inlet end of the first balance valve through a one-way throttling valve. The first balance valve and the second balance valve are respectively connected with two cavities of a rotary hydraulic cylinder. The two-position four-way reversing valve is respectively connected with control ends of the liquid inlet pipeline, the liquid return pipeline, the first balance valve and the second balance valve. The loop can prevent the unstable condition of a rotating arm due to the gravity center change in movable support rotation, reduces radial external force suffered by the rotating arm in transverse moving actions, reduces the winding drum perforation difficulty, and prolongs the winding drum life.

The invention provides a special puncture needle for TIPS. The special puncture needle comprises a puncture part and a long and thin tubular main body, wherein a reference end face is arranged at oneend of the tubular main body; the puncture part is located at one end, close to the reference end face, of the tubular main body and comprises a plurality of inner tubes; every two adjacent inner tubes are connected end to end in a sleeved mode; a sleeve tube located at an outermost side position is inserted into the tubular main body in a sliding mode; a telescopic end face is arranged at one end, far away from the tubular main body, of each inner tube; and a control piece is installed at one end, far away from the reference end face, of the tubular main body and used for driving the inner tubes to slide along the axis of the tubular main body, so the plurality of telescopic end faces and the reference end face are coplanar to form a feeding puncture head, or the plurality of telescopic end faces are separated from one another to form a conical puncture head. The special puncture needle for the TIPS provided by the invention is convenient to puncture, facilitates reducing the puncturedifficulty and reduces the puncture risk.

The invention provides a deep sealing type hole sealing device which can solve the technical problem that a traditional hole sealing device is complex in process and cumbersome in operation. The deep sealing type hole sealing device comprises a suction pipe and a grouting pipe, wherein the suction pipe and the grouting pipe are arranged in parallel, two sealed bags are arranged at the two ends of a hole sealing segment of the suction pipe and the grouting pipe respectively, the bag close to a hole opening is a hole opening bag, the bag close to a hole bottom is a hole bottom bag, the bags wrap the suction pipe and the grouting pipe, the tail end of the grouting pipe is sealed and arranged at the bottom of the hole bottom bag, a one-way valve is arranged at the position, in the corresponding bag, of the grouting pipe, and an explosion valve is arranged between the two bags. The deep sealing type hole sealing device further comprises a floral pipe, wherein the floral pipe is provided with a plurality of notches, one end of the floral pipe is fixed to the outer portion of the bottom of the hole bottom bag, a sharp cone is arranged at the other end of the floral pipe, the tail end of the suction pipe stretches out of the bottom of the hole bottom bag to be connected into the notches of the floral pipe, and the end, close to the hole bottom, of the suction pipe is provided with a plurality of holes. According to the deep sealing type hole sealing device, casing installation, hole sealing and drainage are integrated, so that convenience is achieved, and operation procedures are reduced.

The invention provides a trocar puncturing assisting instrument comprising an operating rod. A lower protecting sheet, an upper protecting sheet and a locating device are arranged on the operating rodfrom bottom to top successively; an adjusting device for adjusting the distance between the upper protecting sheet and the lower protecting sheet is arranged; the middle portion of the upper protecting sheet is provided with channels allowing passing of a trocar. The trocar puncturing assisting instrument has the advantages that, after the upper protecting sheet and the lower protecting sheet areplaced between corresponding abdominal wall layers for building of a space of an abdominal wall cut, the upper protecting sheet can be adjusted upward to make the upper protecting sheet be a certaindistance away from the lower protecting sheet, so that a certain operating space is maintained during trocar puncturing; the locating device is used for location outside a human body; the trocar can penetrate from the channel accurately, so that the operation is simple; the lower protecting sheet can protect peritoneum, so that the trocar puncturing difficulty is reduced, the success rate of surgery is increased and surgery time is remarkably reduced. The trocar puncturing assisting instrument belongs to the field of medical instruments.

The invention provides a special puncture needle for TIPS. The special puncture needle comprises a puncture part and a long and thin tubular main body, wherein a reference end face is arranged at oneend of the tubular main body; the puncture part is located at one end, close to the reference end face, of the tubular main body and comprises a plurality of inner tubes; every two adjacent inner tubes are connected end to end in a sleeved mode; a sleeve tube located at an outermost side position is inserted into the tubular main body in a sliding mode; a telescopic end face is arranged at one end, far away from the tubular main body, of each inner tube; and a control piece is installed at one end, far away from the reference end face, of the tubular main body and used for driving the inner tubes to slide along the axis of the tubular main body, so the plurality of telescopic end faces and the reference end face are coplanar to form a feeding puncture head, or the plurality of telescopic end faces are separated from one another to form a conical puncture head. The special puncture needle for the TIPS provided by the invention is convenient to puncture, facilitates reducing the puncturedifficulty and reduces the puncture risk.