Disclosure of Invention
The invention aims to solve the technical problem of providing a precise infusion tube aiming at the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: a precision infusion tube comprising: the infusion tube comprises an infusion tube, a puncture needle head arranged at the head end of the infusion tube, an infusion needle arranged at the tail end of the infusion tube, a precise flow regulator arranged on the infusion tube and a drip cup arranged on the infusion tube;
the precise flow regulator comprises a shell arranged on the infusion tube, a liquid guide tube inserted into the shell from the upper end and the lower end and respectively connected with the infusion tube at the upper end and the lower end of the shell in a sealing way, a liquid guide disc arranged in the shell and used for being matched with the liquid guide tube, a rotating shaft connected to the liquid guide disc and a knob connected to the other end of the rotating shaft.
Preferably, the catheter comprises an elastic tube section with a fold section connected with the infusion tube, an elastic catheter ball connected with the other end of the elastic tube section, and a plurality of liquid outlet micropores formed on the elastic catheter ball.
Preferably, the liquid guiding disc is provided with a plurality of liquid guiding holes penetrating through the liquid guiding disc along the diameter direction, the sizes of the liquid guiding holes are sequentially reduced along the clockwise direction or the anticlockwise direction, and the elastic liquid guiding balls are used for propping against the side wall of the liquid guiding disc so as to be communicated with the liquid guiding holes.
Preferably, the sizes of the plurality of liquid guiding holes are different, and the sizes of the plurality of liquid guiding holes are reduced sequentially from top to bottom.
Preferably, the side wall of the liquid guide disc is also provided with an annular groove, and polytetrafluoroethylene layers are arranged on the inner wall of the annular groove and the outer wall of the elastic liquid guide ball.
Preferably, the shell is provided with an opening, the rotating shaft is inserted into the shell through the opening, a sealing plate is arranged in the shell, and a shaft hole is formed in the middle of the sealing plate.
Preferably, the rotating shaft is inserted in the shaft hole, an annular sealing groove is formed in the rotating shaft, the part, located at the periphery of the shaft hole, of the sealing plate is clamped in the sealing groove, a sealing layer is arranged in the sealing groove, and a sealing ring is further arranged on the opening.
Preferably, each liquid guide hole is provided with a valve, and one end of each valve is rotatably connected with the inner wall of each liquid guide hole through an arc-shaped elastic sheet.
Preferably, the drip cup is detachably connected to the infusion tube, and the drip cup comprises two drip cups.
Preferably, the upper end and the lower end of the drip cup are in threaded connection with the infusion tube, threaded holes are formed in the upper end and the lower end of the drip cup, and threaded portions for being matched and inserted into the threaded holes are formed in the infusion tube at the upper end and the lower end of the drip cup.
The beneficial effects of the invention are as follows: according to the precise infusion tube, the precise flow control can be realized by arranging the precise flow regulator, the flow control is performed by rotating the knob, the control is convenient and stable, the knob is not easy to loosen after rotating in place, the flow regulation cannot be changed by itself, and the control of infusion is facilitated; through setting up detachable two kettle that drip, can strengthen the filter effect, can also make things convenient for the washing and the change of kettle that drip. The invention has simple structure, accurate and stable flow control, convenient transfusion control and good popularization and application prospect.
Detailed Description
The present invention is described in further detail below with reference to examples to enable those skilled in the art to practice the same by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 7, a precision infusion tube of the present embodiment includes: the infusion tube comprises an infusion tube 1, a puncture needle head 4 arranged at the head end of the infusion tube 1, an infusion needle 5 arranged at the tail end of the infusion tube 1, a precise flow regulator 2 arranged on the infusion tube 1 and a drip cup 3 arranged on the infusion tube 1.
The precise flow regulator 2 comprises a shell 20 arranged on the infusion tube 1, a liquid guide tube 21 inserted on the shell 20 from the upper end and the lower end and respectively connected with the infusion tube 1 at the upper end and the lower end of the shell 20 in a sealing way, a liquid guide disc 22 arranged in the shell 20 and used for being matched with the liquid guide tube 21, a rotating shaft 23 connected to the liquid guide disc 22 and a knob 24 connected to the other end of the rotating shaft 23. The catheter 21 comprises an elastic tube section 210 with a fold section 211 connected with the infusion tube 1, an elastic catheter ball 212 connected with the other end of the elastic tube section 210, and a plurality of liquid outlet micropores formed on the elastic catheter ball 212. The liquid guiding disc 22 is provided with a plurality of liquid guiding holes 220 penetrating the liquid guiding disc 22 along the diameter direction, the sizes of the liquid guiding holes 220 are sequentially reduced along the clockwise direction or the anticlockwise direction, and the elastic liquid guiding balls 212 are used for propping against the side wall of the liquid guiding disc 22 so as to be communicated with the liquid guiding holes 220. The plurality of fluid transfer holes 220 are different in size, and decrease in size from top to bottom. The side wall of the liquid guide disc 22 is also provided with an annular groove 221, so that the elastic liquid guide ball 212 on the liquid guide tube 21 is conveniently clamped on the side wall of the liquid guide disc 22, and the elastic liquid guide ball 212 is conveniently communicated with the liquid guide hole 220.
The precise flow regulator 2 is used for communicating the liquid guide holes 220 with different sizes with the liquid guide tube 21 by rotating the liquid guide disc 22, thereby realizing the control of the flow. Specifically, the liquid guide tube 21 is communicated with the infusion tube 1, the elastic liquid guide ball 212 on the liquid guide tube 21 is arranged in the annular groove 221 on the side wall of the liquid guide disc 22, under the elastic action of the elastic tube section 210 with the fold section 211, the elastic liquid guide ball 212 is propped against the side wall of the liquid guide disc 22 and is communicated with the liquid guide hole 220, and the liquid medicine in the infusion tube 1 above the liquid guide disc 22 flows into the liquid guide hole 220 from the liquid guide tube 21 at the upper end of the liquid guide disc 22, flows into the liquid guide tube 21 at the lower end of the liquid guide disc 22 and finally flows into the infusion tube 1 at the lower end of the liquid guide disc 22. The liquid guide tube 21 at the upper and lower ends of the liquid guide disc 22 has the same size. When the infusion flow needs to be regulated down, the rotary shaft 23 is rotated by the knob 24 to drive the liquid guide disc 22 to rotate, the rotating force breaks through the friction force between the elastic liquid guide ball 212 and the side wall of the liquid guide disc 22, the elastic liquid guide ball 212 slides along the circumference of the annular groove 221 of the liquid guide disc 22, the elastic liquid guide ball 212 slides out of one liquid guide hole 220 and slides into the liquid guide hole 220 with the rotation of the liquid guide disc 22 with the next smaller size (the elastic liquid guide balls 212 at the upper end and the lower end of the liquid guide disc 22 are all the same), and is partially jacked into the liquid guide hole to be communicated with the liquid guide hole (the front part of the elastic liquid guide ball 212 is jacked into the liquid guide hole 220 to guide liquid), so that the liquid flow of the infusion tube 1 flowing into the lower part is reduced. The elastic force of the elastic tube section 210 with the fold section 211 can make the elastic liquid guiding ball 212 push into the liquid guiding hole 220 when moving to a proper position, has a certain sealing effect, and is beneficial to the communication between the elastic liquid guiding ball 212 and the liquid guiding hole 220. The design of fold section 211 can increase the elasticity of elastic tube section 210, and elasticity liquid guide ball 212 itself also has elasticity, and on the one hand makes things convenient for elasticity liquid guide ball 212 to remove in ring channel 221 on the drain pan 22 lateral wall, and on the other hand also does benefit to elasticity liquid guide ball 212 jack-in liquid guide hole 220 to carry out the drain to can strengthen the leakproofness, improve the drain effect. Meanwhile, the elastic liquid guide ball 212 is propped into the liquid guide hole 220, the knob 24 is not easy to loosen after rotating in place, and the flow cannot change automatically after being regulated, so that the flow is controlled more stably.
In one embodiment, a cavity is provided within the drip tray 22 that communicates with each drip hole 220. The cavity divides each of the liquid guiding holes 220 into an upper section and a lower section, and liquid flows into the cavity from the upper section and then into the lower section.
The inner wall of the annular groove 221 and the outer wall of the elastic liquid guiding ball 212 are provided with polytetrafluoroethylene layers 25. The polytetrafluoroethylene layer 25 can increase the smoothness and toughness of the inner wall of the annular groove 221 and the outer wall of the elastic liquid guiding ball 212, so that the elastic liquid guiding ball 212 can slide on the annular groove 221 in a rotating manner.
In one embodiment, each of the liquid guiding holes 220 is provided with a valve 222, one end of the valve 222 is rotatably connected with the inner wall of the liquid guiding hole 220 through an arc-shaped elastic piece 223, and the arc-shaped elastic piece 223 is preferably made of plastic. When no external force acts, the valve 222 covers the liquid guide hole 220, and the liquid guide hole 220 is kept sealed; when the external force presses the valve 222, the other end of the valve 222 rotates downwards, and the liquid guide hole 220 is communicated; and after the external force is removed, the valve 222 returns to the original position under the elastic force of the arc-shaped elastic sheet 223. When the elastic liquid guiding ball 212 is propped into the liquid guiding hole 220, the elastic liquid guiding ball 212 props up the valve 222 to lead the liquid guiding hole 220 to be communicated; when the elastic liquid guide ball 212 is not jacked into the liquid guide hole 220, the valve 222 is kept closed, and the liquid guide hole 220 is kept closed; referring to fig. 7, after the elastic liquid guiding ball 212 is pushed in, the valve 222 rotates in the arrow direction, which gives an indication of the rotation state of the valve 222. Thereby, the liquid guide disc 22 has better sealing effect, and the sealing performance of the whole precise flow regulator 2 can be improved. The liquid medicine can only flow from the liquid guiding hole 220 communicated with the elastic liquid guiding ball 212, namely, the liquid medicine flows into the liquid guiding hole 220 propped in by the elastic liquid guiding ball 212 from the elastic liquid guiding ball 212 on the liquid guiding tube 21 at the upper end of the liquid guiding disc 22, then flows out from the elastic liquid guiding ball 212 propped in the liquid guiding hole 220 at the lower end of the liquid guiding disc 22, and other liquid guiding holes 220 which are not communicated with the elastic liquid guiding ball 212 are kept sealed under the action of the valve 222, so that the liquid medicine cannot flow from the liquid guiding hole.
The casing 20 is provided with an opening (not shown), the rotating shaft 23 is inserted into the casing 20 through the opening, a sealing plate 201 is arranged in the casing 20, and a shaft hole 202 is formed in the middle of the sealing plate 201. The rotating shaft 23 is inserted into the shaft hole 202, an annular sealing groove 230 is formed in the rotating shaft 23, a part, which is positioned on the periphery of the shaft hole 202, of the sealing plate 201 is clamped in the sealing groove 230, namely, the sealing groove 230 and the shaft hole 202 are positioned at the same position, and a sealing layer 231 is arranged in the sealing groove 230, so that the rotating shaft 23 can rotate in the shaft hole 202 and can keep the sealing of the shaft hole 202. The provision of the seal groove 230 can effectively enhance the sealing effect.
The opening is further provided with a sealing ring 203 to further enhance the sealing of the housing 20 and prevent the liquid medicine from exuding.
The drip cup 3 can be detachably connected to the infusion tube 1, the drip cup 3 comprises two drip cups 3, and the arrangement of the plurality of drip cups 3 can enhance the filtering effect.
The upper and lower both ends of drip cup 3 all with transfer line 1 threaded connection, drip cup 3's upper and lower end all is provided with screw hole 30, is provided with the screw portion 31 that is used for the cooperation to insert and establishes at screw hole 30 on transfer line 1 of drip cup 3's upper and lower both ends. Screw holes 30 at the upper end and the lower end of the drip cup 3 are in threaded connection with a threaded part 31 on the infusion tube 1, so that the drip cup 3 is convenient to detach, replace and clean, and can be well sealed and fixed.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Although embodiments of the present invention have been disclosed above, it is not limited to the use of the description and embodiments, it is well suited to various fields of use for the invention, and further modifications may be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the particular details without departing from the general concepts defined in the claims and the equivalents thereof.