CN211410435U

CN211410435U - Infusion port wash pipe injection device

Info

Publication number: CN211410435U
Application number: CN201922130948.XU
Authority: CN
Inventors: 任瑞瑞; 宋婷; 闫杰
Original assignee: Zhengzhou Central Hospital
Current assignee: Zhengzhou Central Hospital
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-09-04
Anticipated expiration: 2029-12-02

Abstract

An injection device for a flushing pipe of an infusion port effectively solves the problem that the existing injection device is difficult to realize intermittent injection independently; the device comprises a needle cylinder which is axially arranged from top to bottom, wherein a first piston is coaxially and slidably connected in the needle cylinder, a base which is positioned on the upper side of the needle cylinder and has two sealed ends is in threaded connection with the inner thread of the needle cylinder, a partition plate which is positioned on the upper side of the base is coaxially arranged in the base, the left side and the right side of the lower end of the partition plate are respectively provided with a first baffle plate which is vertically arranged, a screw rod which is positioned below the partition plate is coaxially arranged in the base, a second piston is coaxially and threadedly connected on the screw rod, the second piston is closely and slidably connected with the inner wall of the base and the first baffle plate, the base is provided with a plurality of; the structure is simple, the operation is convenient, the conception is novel, and the practicability is strong.

Description

Infusion port wash pipe injection device

Technical Field

The utility model relates to the technical field of infusion medical equipment, in particular to an infusion port washing tube injection device.

Background

Infusion PORT (PORT) is the closed infusion set of implanting the human body completely, can provide long-term venous blood passageway for the patient, implant the PORT body subcutaneously through the operation, the connecting tube, establish central venous passage, be fit for tumour patient's long-term chemotherapy, draw blood repeatedly, blood transfusion and need long-term vein nutrition person, it is good to have the disguise, reduce multiple advantages such as patient's misery, but the infusion PORT all need carry out the washing pipe operation after using, avoid remaining the medicine deposit in the pipe, it is general to keep the blood vessel, washing pipe operation needs the pulsed washing pipe, be intermittent type formula injection, but current injection apparatus hardly independently realizes intermittent type injection, make medical personnel's complex operation more, waste time and energy.

SUMMERY OF THE UTILITY MODEL

To the above situation, in order to overcome the defects of the prior art, the utility model aims to provide an injection device for flushing a tube in an infusion port, which effectively solves the problem that the prior injection device is difficult to independently realize intermittent injection.

The technical scheme of its solution is, the utility model discloses an upper and lower axial cylinder, coaxial sliding connection has first piston in the cylinder, cylinder female connection has the base that is located its upside and both ends are sealed, the coaxial baffle that is located its upside that is equipped with in the base, the first baffle of direction about the baffle lower extreme left and right sides is equipped with respectively, the coaxial screw rod that is located the baffle below that is equipped with in the base, coaxial threaded connection has the second piston on the screw rod, second piston and base inner wall and the inseparable sliding connection of first baffle, be equipped with a plurality of intake pipes that link up inside and outside its circumferencial direction equipartition and along on the base, a plurality of intake pipes all are located the cylinder top, the base lower extreme is equipped with the blast.

Compared with the prior art, the beneficial effects of the utility model are that: the second piston is driven by the motor and the screw rod to realize intermittent up-and-down reciprocating motion, air is filled into the needle cylinder, and air pressure above the first piston is increased, so that intermittent injection is realized, liquid injected into the infusion port intermittently can form a small vortex in the catheter, liquid medicine attached to the catheter and the vascular wall can be effectively washed clean, residual medicine is prevented from being deposited in the catheter, the washing effect is better, the operation of medical staff is more convenient, and time and labor are saved; the structure is simple, the operation is convenient, the conception is novel, and the practicability is strong.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the utility model.

Fig. 3 is a main view axis side view of the utility model when connecting the pull rod.

Fig. 4 is an enlarged view of a in fig. 2 according to the present invention.

Fig. 5 is an enlarged view of B in fig. 2 according to the present invention.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

By figure 1 to 5, including axial cylinder 1 from top to bottom, coaxial sliding connection has first piston 2 in the

cylinder

1, 1 internal thread connection of cylinder has the base 3 that is located its upside and both ends are sealed, coaxial being equipped with the baffle 4 that is located its upside in the base 3, the baffle 4 lower extreme left and right sides is equipped with the first baffle 5 of direction from top to bottom respectively, coaxial being equipped with the screw rod 6 that is located baffle 4 below in the base 3, coaxial threaded connection has second piston 7 on the screw rod 6,

second piston

7 and 3 inner walls of base and the inseparable sliding connection of first baffle 5, be equipped with a plurality of intake pipes 8 that link up inside and outside along its circumferencial direction equipartition on the base 3, a plurality of intake pipes 8 all are located cylinder 1 top, the base 3 lower extreme is equipped with the blast pipe 9 rather.

In order to realize the forward and reverse rotation of the screw 6 and drive the second piston 7 to move up and down, a motor 10 is arranged between the upper end of the base 3 and the partition plate 4, and an output shaft of the motor 10 is coaxially and fixedly connected with the screw 6.

In order to control the directions of air intake and air exhaust conveniently, a first one-way valve 11 with an opening facing the inside of the base 3 is arranged in each air intake pipe 8, and a second one-way valve 12 with an opening facing the outside of the base 3 is arranged in each air exhaust pipe 9.

In order to improve the sealing effect between the base 3 and the syringe 1, the syringe 1 is coaxially provided with an annular layered plate 13 positioned below the base 3, and the lower end of the base 3 is provided with an annular sealing gasket 14 which can be contacted with the upper end surface of the layered plate 13.

In order to facilitate the suction of the liquid medicine into the syringe 1, the first piston 2 is provided with a pull rod 15 coaxially screwed therewith, the left and right sides of the first piston 2 are respectively provided with a vertically through chute 16, the left and right sides of the layered plate 13 are respectively provided with a vertically second baffle 17, and the second baffle 17 penetrates through the chute 16 on the corresponding side and is tightly and slidably connected with the chute 16.

In order to prevent the second piston 7 from impacting the air inlet pipe 8, the lower end of the first baffle 5 is provided with an annular supporting plate 18 which is positioned above the air inlet pipe 8.

In order to facilitate puncture, a puncture needle 19 is nested at the lower end of the needle cylinder 1.

When the utility model is used, firstly, the pull rod 15 is connected with the first piston 2 by screw thread, because the left and right sides of the layered plate 13 are respectively provided with the second baffle 17 in the up-down direction, the second baffle 17 is fixedly connected with the inner wall of the needle cylinder 1, therefore, when the rotary pull rod 15 is in threaded connection with the first piston 2, the second baffle 17 can block the first piston 2 to prevent the first piston 2 from rotating, so that the screw connection between the pull rod 15 and the first piston 2 is facilitated, after the pull rod 15 is connected with the first piston 2, because the lower end of the needle cylinder 1 is connected with the puncture needle 19 in a nested way, after the puncture needle 19 is extended into the liquid medicine, the pull rod 15 is pulled outwards, so that the first piston 2 slides outwards in the needle cylinder 1, thereby sucking the liquid medicine into the syringe 1, reversely rotating the pull rod 15 after the liquid medicine is sucked, under the blocking of the second baffle 17, the pull rod 15 is separated from the first piston 2, and the pull rod 15 is taken down;

at the moment, the base 3 is in threaded connection with the needle cylinder 1, the sealing gasket 14 at the lower end of the base 3 is ensured to be in close contact with the upper end face of the layered plate 13 to play a sealing role, then the motor 10 is started, the motor 10 alternately rotates forwards and backwards to drive the screw 6 to alternately rotate forwards and backwards, the second piston 7 is driven to move up and down under the blocking of the first baffle plate 5, when the screw 6 drives the second piston 7 to move downwards, the second piston 7 compresses air in the base 3 downwards, and the second one-way valve 12 in the exhaust pipe 9 is opened, so that the air is filled above the first piston 2, the air pressure above the first piston 2 is increased, the first piston 2 is compressed downwards, and the injection operation of the liquid medicine is realized;

when the screw 6 drives the second piston 7 to move upwards, negative pressure is generated below the second piston 7, the first one-way valve 11 in the air inlet pipe 8 is opened, outside air is sucked into the base 3, the second piston 7 moves upwards, the intermittence of liquid medicine injection is realized, and when the motor 10 is switched between positive rotation and negative rotation, a certain time interval is provided, so that the operation of intermittently injecting liquid medicine is well realized;

because the layering plate 13 and the sealing gasket 14 are both annular, the exhaust pipe 9 at the lower end of the base 3 can be communicated with the upper part of the first piston 2, air is conveniently discharged to the upper part of the first piston 2, air pressure above the first piston 2 is increased, so that the first piston 2 moves downwards to inject liquid medicine, after injection operation is finished, the needle cylinder 1 is recycled at one time, so that tube flushing operation is cleaner and more sanitary, and the cost is greatly saved due to the repeatedly used base 3.

The utility model discloses set up layer board 18, be in order to play to rely on and block the effect to second piston 7, prevent that second piston 7 and screw rod 6 from breaking away from.

The utility model discloses set up a plurality of intake pipes 8 and all be located between 1 top of cylinder and the layer board 18, be for the convenience inside the external air admission base 3 of suction.

Claims

1. A syringe injection device for a transfusion harbor comprises a syringe (1) which is axial up and down, and is characterized in that a first piston (2) is coaxially and slidably connected in the syringe (1), a base (3) which is positioned at the upper side of the syringe (1) and has two sealed ends is connected in the syringe (1), a partition plate (4) which is positioned at the upper side of the base (3) is coaxially arranged in the base (3), first baffle plates (5) which are positioned in the up-and-down direction are respectively arranged at the left side and the right side of the lower end of the partition plate (4), a screw rod (6) which is positioned below the partition plate (4) is coaxially arranged in the base (3), a second piston (7) is coaxially and threadedly connected on the screw rod (6), the second piston (7) is closely and slidably connected with the inner wall of the base (3) and the first baffle plates (5), a plurality of air inlet pipes (8) which are, the lower end of the base (3) is provided with an exhaust pipe (9) communicated with the inside of the base.

2. The injection device of the infusion port flushing pipe as claimed in claim 1, wherein a motor (10) is arranged between the upper end of the base (3) and the partition plate (4), and an output shaft of the motor (10) is coaxially and fixedly connected with the screw rod (6).

3. A port flush syringe device according to claim 1, characterized in that each inlet tube (8) has a first one-way valve (11) opening towards the inside of the base (3) and the outlet tube (9) has a second one-way valve (12) opening towards the outside of the base (3).

4. The injection device of the infusion port wash pipe as claimed in claim 1, wherein the needle cylinder (1) is coaxially provided with an annular layered plate (13) which is positioned below the base (3), and the lower end of the base (3) is provided with an annular sealing gasket (14) which can be contacted with the upper end surface of the layered plate (13).

5. The injection device of the infusion port wash pipe according to claim 1, wherein the first piston (2) is provided with a pull rod (15) coaxially screwed with the first piston, the left side and the right side of the first piston (2) are respectively provided with a chute (16) which is through up and down, the left side and the right side of the layered plate (13) are respectively provided with a second baffle plate (17) which is through the chute (16) at the corresponding side and is tightly connected with the chute (16) in a sliding manner.

6. The device as claimed in claim 1, wherein the first baffle (5) is provided with an annular support plate (18) at the lower end thereof and above the air inlet pipe (8).

7. The device for injecting the flushing pipe at the infusion port as claimed in claim 1, wherein the puncture needle (19) is nested at the lower end of the needle cylinder (1).