CN213374422U

CN213374422U - Novel low-resistance syringe

Info

Publication number: CN213374422U
Application number: CN202021647627.3U
Authority: CN
Inventors: 张晓军
Original assignee: Nanchang Medicon Medical Instrument Factory
Current assignee: Nanchang Medicon Medical Instrument Factory
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-06-08
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses a novel low-resistance injector, which comprises a round rod, a piston, a liquid outlet hopper, a flange and a cavity, wherein the piston is driven to slide in the sleeve by the pushing of the round rod and a conical block, so that the injection is conveyed into an injection needle through a sleeve conical head and then is input into a patient body, meanwhile, a sleeve pipe slides on the outer wall of the sleeve, so that the scale value on a scale strip is read to inject the corresponding injection amount to the patient, when medical personnel finish conveying the injection in the sleeve by pressing a push handle, the outer wall of the conical block is attached to the inner wall of a limiting ring, so that the piston does not continue to advance, the piston is prevented from being extruded and deformed into the sleeve conical head, when the shape of the piston is recovered, the vacuum negative pressure is formed in the sleeve conical head, and the piston pushes the block to move a certain space in the cavity by the arrangement of the cavity, the piston is prevented from moving due to the fact that the round rod is pulled outwards in a small amplitude.

Description

Novel low-resistance syringe

Technical Field

The utility model relates to an injector, in particular to a novel low-resistance injector.

Background

Syringes are a common medical device, and the principle of syringes was proposed by kathler, italian as early as the 15 th century. It is mainly used for injecting liquid medicine or extracting liquid. Syringes may also be used for injection through rubber septa in medical devices, containers, scientific instruments such as in some chromatography. Injecting gas into a blood vessel will cause air embolism. The method of removing air from the syringe to avoid embolism is to invert the syringe, tap it gently, and then squeeze out a little liquid before injecting into the bloodstream.

The existing injector needs advanced exhaust before being used in the process of injecting a patient, when the pre-flushing type flushing pipe injector is used for flushing, the top of the piston is extruded towards the inner wall of the conical head of the sleeve, the top of the piston is completely or mostly attached to the inner wall of the conical head, and the top of the piston is deformed to go deep into the hollow channel of the conical head of the sleeve by the force borne by the piston. When the external force is removed and the piston head is deformed and recovered, negative pressure is generated in the hollow channel, so that the blood return phenomenon occurs, and the blood return phenomenon is harmful to a patient, so that further improvement is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel low resistance syringe to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a novel low resistance syringe, includes the sleeve, telescopic outer wall inlays and is equipped with the scale strip, telescopic one end fixedly connected with goes out the liquid fill, the one end that goes out the liquid fill runs through fixedly connected with sleeve conical head, telescopic inner wall sliding connection has the piston, the outer wall symmetry of piston is provided with two flanges, two the outer wall of flange and the equal sliding connection of telescopic inner wall, the cavity has been seted up to the piston bottom, be provided with the piston in the cavity and promote the piece, the piston promotes the outer wall fixedly connected with round bar of piece.

As a further aspect of the present invention: the telescopic outer wall slip cap is equipped with the sleeve pipe, sheathed tube outer wall threaded connection has fixing bolt, fixing bolt's one end is run through and is laminated with telescopic outer wall behind the sheathed tube outer wall.

As a further aspect of the present invention: one end of the round rod extends out of the other end of the sleeve and then is fixedly connected with a push handle.

As a further aspect of the present invention: the fixed cover of outer wall of round bar is equipped with the toper piece, two connecting blocks of the outer wall symmetry fixedly connected with of toper piece, two the equal fixed connection connecting rod of outer wall of connecting block, the one end and the sheathed tube outer wall fixed connection of connecting rod.

As a further aspect of the present invention: the inner wall of the sleeve is fixedly connected with a limiting ring, and the outer wall of the sleeve is symmetrically and fixedly connected with two supporting blocks.

As a further aspect of the present invention: the sleeve, the sleeve conical head and the liquid outlet hopper are communicated, and the piston and the flange are made of rubber.

Compared with the prior art, the beneficial effects of the utility model are that:

1. when medical personnel made the piston carry the injection of sleeve inside through pressing the push handle and accomplished, the outer wall of toper piece and the inner wall laminating of spacing ring, and then make the piston no longer continue to impel forward, prevent inside piston part extrusion deformation to the sleeve conical head, when the piston shape resumes, can cause the inside vacuum negative pressure that forms of sleeve conical head, and then can lead to the internal blood of patient to flow back to inside the sleeve conical head, setting through the cavity, make the piston promote the piece in the inside certain removal space of cavity, avoid the outside pulling round bar of small amplitude can not cause the removal of piston, blood backflow has further been prevented, cause harm to the patient.

2. Medical personnel push away the handle and then make the piston slide through promoting, make the sleeve pipe slide on telescopic outer wall simultaneously, and then medical personnel adjust the quantity of injection according to the scale position at sleeve pipe place, and then read the quantity that scale value comes to inject corresponding injection to the patient on the scale strip.

3. The contact area between the piston and the inside of the sleeve is reduced through the arrangement of the flange, so that the resistance of the piston when the piston slides on the inner wall of the sleeve is reduced, and then medical personnel can more easily push the piston to inject through the push handle.

Drawings

Fig. 1 is a schematic structural diagram of a novel low resistance syringe.

Figure 2 is a partial cross-sectional view of the novel low drag syringe.

FIG. 3 is a partial cross-sectional view of the novel low drag syringe.

Shown in the figure: the device comprises a round rod 1, a conical block 2, a push handle 3, a connecting block 4, a supporting block 5, a connecting rod 6, a fixing bolt 7, a sleeve 8, a sleeve conical head 9, a scale bar 10, a sleeve 11, a limiting ring 12, a piston pushing block 13, a piston 14, a liquid outlet hopper 15, a flange 16 and a cavity 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, in the embodiment of the present invention, a novel low resistance injector comprises a sleeve 8, a scale strip 10 is embedded in an outer wall of the sleeve 8, a liquid outlet hopper 15 is fixedly connected to one end of the sleeve 8, a sleeve conical head 9 is fixedly connected to one end of the liquid outlet hopper 15, a sleeve 11 is slidably sleeved on an outer wall of the sleeve 8, a fixing bolt 7 is threadedly connected to an outer wall of the sleeve 11, one end of the fixing bolt 7 is attached to an outer wall of the sleeve 8 after penetrating through the outer wall of the sleeve 11, a piston 14 is slidably connected to an inner wall of the sleeve 8, two flanges 16 are symmetrically arranged on an outer wall of the piston 14, outer walls of the two flanges 16 are slidably connected to an inner wall of the sleeve 8, a cavity 17 is formed at the bottom of the piston 14, a piston pushing block 13 is arranged in the cavity 17, a round rod 1 is fixedly connected to an, fixedly connected with pushes away handle 3 behind the other end that sleeve 8 was stretched out to the one end of round bar 1, the fixed cover of outer wall of round bar 1 is equipped with toper piece 2, two connecting blocks 4 of the outer wall symmetry fixedly connected with of toper piece 2, two the equal fixed connection connecting rod 6 of the outer wall of connecting block 4, the one end of connecting rod 6 and sleeve pipe 11's outer wall fixed connection, sleeve 8's inner wall fixedly connected with spacing ring 12, two supporting shoes 5 of sleeve 8's outer wall symmetry fixedly connected with, set up for the UNICOM between sleeve 8, sleeve conical head 9 and the play liquid fill 15, piston 14 and flange 16 are the rubber material.

The utility model discloses a theory of operation is:

when the injector is required to be used for injection, the injection needle is sleeved on the sleeve conical head 9 and is inserted into the injection through one end of the injection needle, the injection is sucked into the injector through pulling the injection and then is sucked into the inner cavity of the sleeve 8 through pulling the push handle 3, when the injection is carried out, the piston 14 is driven to slide in the sleeve 8 through pushing the round rod 1 and the conical block 2 by pressing the push handle 3, the injection is further driven to be conveyed into the injection needle through the sleeve conical head 9 and then is input into the body of a patient, a medical worker pushes the push handle 3 to further slide the piston 14 and simultaneously slide the sleeve 11 on the outer wall of the sleeve 8, the medical worker adjusts the injection dosage according to the scale position of the sleeve 11 and further reads the scale value on the scale strip 10 to inject the corresponding injection dosage to the patient, when the medical worker finishes conveying the injection in the sleeve 8 through pressing the push handle 3 by the piston 14, the outer wall of toper piece 2 and the inner wall laminating of spacing ring 12, and then make piston 14 no longer continue to impel forward, prevent that 14 parts of piston extrusion from being out of shape to inside the sleeve conical head 9, when 14 shapes of piston resume, can cause the inside vacuum negative pressure that forms of sleeve conical head 9, and then can lead to the internal blood of patient to flow back to inside the sleeve conical head 9, setting through cavity 17, make piston promote piece 13 at the inside certain space that removes of cavity 17, avoid the outside pulling round bar 1 of small amplitude can not cause the removal of piston 14, further prevented the blood backward flow, cause harm to the patient, setting up through flange 16 has reduced the area of contact of piston 14 with sleeve 8 inside, make piston 14 the resistance when sliding with sleeve 8's inner wall reduce, and then be convenient for medical personnel's relaxation push piston 14 through pushing away handle 3 and inject.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A novel low resistance syringe, includes sleeve (8), its characterized in that: the outer wall of sleeve (8) inlays and is equipped with scale bar (10), the one end fixedly connected with of sleeve (8) goes out liquid fill (15), the one end that goes out liquid fill (15) runs through fixedly connected with sleeve conical head (9), the inner wall sliding connection of sleeve (8) has piston (14), the outer wall symmetry of piston (14) is provided with two flanges (16), two the outer wall of flange (16) and the equal sliding connection of inner wall of sleeve (8), cavity (17) have been seted up to piston (14) bottom, it promotes piece (13) to be provided with the piston in cavity (17), the outer wall fixedly connected with round bar (1) that the piston promoted piece (13).

2. The novel low drag syringe of claim 1 wherein: the outer wall of sleeve (8) slides and overlaps and is equipped with sleeve pipe (11), the outer wall threaded connection of sleeve pipe (11) has fixing bolt (7), the one end of fixing bolt (7) is run through and is laminated with the outer wall of sleeve pipe (8) behind the outer wall of sleeve pipe (11).

3. The novel low drag syringe of claim 1 wherein: one end of the round rod (1) extends out of the other end of the sleeve (8) and then is fixedly connected with a push handle (3).

4. The novel low drag syringe of claim 1 wherein: the outer wall fixed cover of pole (1) is equipped with toper piece (2), two connecting blocks (4) of the outer wall symmetry fixedly connected with of toper piece (2), two the equal fixed connection connecting rod (6) of outer wall of connecting block (4), the outer wall fixed connection of the one end of connecting rod (6) and sleeve pipe (11).

5. The novel low drag syringe of claim 1 wherein: the inner wall of sleeve (8) fixedly connected with spacing ring (12), the outer wall symmetry fixedly connected with two supporting shoes (5) of sleeve (8).

6. The novel low drag syringe of claim 1 wherein: the sleeve (8), the sleeve conical head (9) and the liquid outlet hopper (15) are communicated, and the piston (14) and the flange (16) are made of rubber.