Positive-pressure slow-release automatic sealing device for indwelling needle
An automatic sealing and indwelling needle technology, which is applied in the direction of needles, instruments introduced into the body, valves, etc., can solve the problems of thrombus formation and blood coagulation, and achieve the effects of avoiding pressure, comfortable and convenient use, and convenient operation
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Embodiment 1
[0028] Embodiment one: see attached figure 1 Shown:
[0029] An indwelling needle positive-pressure slow-release automatic closing device, which needs to be connected in series with the indwelling needle infusion channel. The conversion device and the energy storage liquid storage device; the energy storage liquid storage device automatically closes the indwelling needle infusion channel when it opens and slowly releases its internal storage liquid; the energy storage liquid storage device at least includes a liquid storage cylinder 14, a storage tank Energy spring 13, a piston 11 with an infusion channel opening at the front end; the indwelling needle positive pressure slow-release automatic closing device has an indwelling needle long conduit input interface or / and output interface, and the indwelling needle long conduit input interface is located at the rear of the piston 11 .
[0030]In this example, the piston 11 cooperates with the inner cavity of the liquid storage cy...
Embodiment 2
[0031] Embodiment two: see attached figure 2 , 3 Shown:
[0032] An indwelling needle positive pressure slow-release automatic closing device, including a liquid storage cylinder 14, a piston 11, a piston seat 12, an energy storage spring 13, a spring limit device 15, an output part 1, the bottom of the liquid storage cylinder 14 and the output part 1 The seal 5 between; the front end of the piston 11 and the piston seat 12 is equipped with an infusion channel opening; the piston 11 is sleeved on the piston seat 12, and the rear part of the piston seat 12 has a pull rod and a handle 16 or / and a support frame 17, The rear part of the pull rod is provided with an infusion infusion interface or a long catheter connection port of an indwelling needle; the pull rod passes through the spring limiter 15, and the energy storage spring 13 is located between the piston seat 12 and the spring limiter 15; the seal 5 is provided with an infusion hole 6, and the bottom wall 7 of the inne...
Embodiment 3
[0036] Embodiment three: see attached Figure 4 Shown:
[0037] An indwelling needle positive pressure slow-release automatic closing device is assembled with an indwelling needle three-way catheter seat 19, and the liquid inlet end of the indwelling needle three-way catheter seat 19 is the output part 1 of the indwelling needle positive pressure slow-release automatic closing device The indwelling needle positive pressure slow-release automatic closing device includes an output part 1 and a liquid storage cylinder 14; the inner cavity of the liquid storage cylinder 14 is provided with an energy storage spring 13, a piston 11 with an infusion channel opening and a piston seat 12, and the spring The limit device 15 limits the energy storage spring 13 in the liquid storage cylinder 14, the energy storage spring 13 is located between the piston seat 12 and the spring limit device 15, and acts on the piston seat 12 to form an energy storage liquid storage device; The piston 11 is...
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