CN100398165C - Control structure of drip injection tube - Google Patents

Abstract

A control structure of a drip injection tube mainly comprises a control structure composed of an injection tube part, a continuous cup with a built-in drip stop part and the like; when the dropping liquid in the injection tube is gradually dropped into the continuous cup, the drop stopping part in the continuous cup can float and float on the dropping liquid interface, so that the continuous cup outputs the dropping liquid for injection; when the dropping liquid in the injection tube is completely dropped, no dropping liquid is injected into the continuous cup, at the moment, the liquid level is lowered to enable the dropping part to descend immediately, and the dropping liquid is adsorbed in the dropping part under the action of gravity and is tightly attached to the outlet of the continuous cup, so that the residual dropping liquid and air can be blocked, and the air can be effectively prevented from being injected into a human body carelessly or a blood backflow control structure.

Description

The control structure of drip syringe

technical field

The invention relates to a control structure of a drip injection cylinder, especially a control structure suitable for the drip injection cylinder, which can effectively block dripping liquid and air, and prevent blood backflow.

Background technique

In the process of drip injection, it is often necessary to add a syringe. When adding other medicines, the medicine can be directly injected into the syringe, and the drop can be introduced from the drip bottle for mixing, dilution and injection measurement. For injection, because the syringe itself has a scale mark, it is easy for medical personnel to operate, so it is widely used; but when the injection liquid in the syringe is about to be injected, in order to prevent the air in the syringe from accidentally injecting into the human body, the syringe It must be closed in time to ensure injection safety; generally speaking, the injection cylinder must be closed in time by adding a control structure to achieve the stopper function.

For this reason, a commonly used drip injection cylinder is provided with a control structure to solve the above-mentioned needs; The control structure of the stopper closing, the center of the ring body is clamped with a stop piece a, when the injection cylinder is used to inject the mixed drop of medicine, the stop piece a of the annular stopper body 2 is affected by the buoyancy, and floats on the injection surface. Liquid interface, the injection liquid is led out from the injection liquid outlet b below the injection cylinder 1, and is dripped by the connection cup 3, and the connection cup 3 fits on the bottom flange c of the injection cylinder 1. When the injection liquid is about to run out, the ring The stop piece a of the stopper body 2 then descends together with the liquid level, and closes the injection outlet b.

However, after actual use, it is found that there are still some defects in the existing product disclosed above. As shown in FIG. It will form a relative swing relationship with the syringe 1. At this time, the annular stopper body 2 may collide with the lateral wall of the syringe 1 to form two locking points 2a-2b. The annular stopper body 2 will be as shown in the figure. It is stuck above the injection outlet b, and can no longer drop with the liquid level to close the injection outlet b, causing the injection to continue to flow out from the injection outlet b; even as shown in Figure 1B, the annular stopper body 2 is overturned and locked Between the lateral wall of the injection cylinder 1 and the injection outlet b, the original anti-blocking effect has also been lost; this phenomenon often occurs due to the movement of the patient himself, or the patient's bed is pushed Shaking, or caused by the push of the patient sitting on the wheelchair; this shortcoming leads to incomplete efficacy, once it happens, the air in the syringe 1 will accidentally inject into the human body, which will affect the safety of the injection. be improved.

Therefore, in view of the above-mentioned practical deficiency of commonly used products, the present invention is actively conceived and practically tested, and then its overall structure develops a device that can effectively block dripping liquid and air, and prevent blood backflow, and regardless of shaking or tilting and Whether or not will not be affected, but can ensure the anti-dripping effect, to improve the lack of practicality of commonly used products, and greatly enhance its practical effect.

Contents of the invention

The main creation purpose of the present invention is to provide a kind of control structure of drip injection cylinder; It mainly includes an injection cylinder part, a floating stop drip part and a connecting cup etc.; Make the drip stop float on the drip interface, the drip can be output from the extension cup and injected, and when the liquid level drops, the drip stop will drop accordingly, because the drip stop is also filled in the part, under the action of gravity, the drip stop That is, it is adsorbed and attached to the outlet of the connection cup, effectively blocking the remaining dripping liquid and air.

Another creation purpose of the present invention is to provide a kind of control structure of drip syringe; the floating stopper is a floating container: the bottom of the floating container has a spherical film; and through the good contact of the spherical film And there is no direction restriction, so the stopper effect is not affected by shaking or tilting, etc. Since the control action is limited to the connection cup, the room for error is greatly reduced, so there is a better gap between the drip stop and the connection cup Coordination.

Another creative purpose of the present invention is to provide a control structure for drip injection cylinder; the floating stop drip part can also be made of floating cup body and separate spherical film, so that the liquid that the container can hold Weight is increased to enhance the lowering action of the container during stopper action, and the spherical membrane is thus more flexible Improved stopper fit.

In order to achieve the above-mentioned purpose and effect, the technical means adopted by the present invention include the control structure of the infusion cylinder composed of components such as a syringe part, a connection cup with a built-in drip stop part; wherein:

The injection cylinder part is a hollow injection cylinder, the bottom is provided with an injection liquid outlet and a fixed convex ring, and the top is provided with a connecting end;

The anti-drip part is a floatable container, and its bottom has a film-shaped spherical surface. Due to the good contact and non-directional restriction of the film spherical surface, the stopper effect is not affected by shaking or tilting;

The connecting cup is a hollow cup body, which fits the fixed convex ring with an opening, and a drip outlet is provided under the cup body so that the injection can flow out, and the drip stop is placed in the connecting cup, and The stopper control is limited to the cup, which greatly reduces the error-prone movement space and the relative swing angle of the two, so that the spherical film is enough to cover the drip outlet and the stopper fits reliably.

The beneficial effect of using the present invention is that it can effectively block dripping liquid and air, and prevent blood backflow, and it will not be affected no matter whether it is shaken or tilted, so as to ensure the anti-dripping effect.

Description of drawings

Fig. 1 is a schematic sectional view of a commonly used drip injection cylinder;

Figure 1A shows that the commonly used drip injection cylinder is shaken or tilted when the injection is about to run out, so that the annular stopper body may interfere with the lateral wall of the injection cylinder, forming two locking points, which cannot close the injection fluid outlet. The original expectation Schematic diagram of the cross-sectional action of the failure of the stopper function;

Fig. 1B is a cross-sectional action schematic diagram of a commonly used drip syringe whose ring-shaped stopper body is turned over and locked between the lateral wall surface of the syringe and the injection liquid outlet, and has lost the original expected stopper function;

Fig. 2 is a three-dimensional exploded schematic diagram of another embodiment of the present invention;

Fig. 3 is a schematic cross-sectional view of another embodiment of the present invention;

Fig. 3A is another embodiment of the present invention, when dripping liquid is about to drip, because of the acceleration of the liquid weight and the liquid level that are filled in this float cup body, its film-like spherical bottom will be absorbed quickly, and closely adhere to A schematic cross-sectional view of the drip outlet;

Fig. 3B is another embodiment of the present invention. When the drip is about to finish, even if the syringe and the extension cup are affected by shaking or tilting, the film-shaped spherical bottom is still adsorbed and tightly attached to the drip outlet. ;

Fig. 4 is another embodiment of the present invention, a schematic diagram of the actual injection configuration.

Detailed ways

In order to further understand the features, technical means, and achieved specific functions and objectives of the present invention, a more specific embodiment of the present invention is enumerated hereby, and the details are as follows in conjunction with the drawings and figure numbers.

Please refer to Fig. 2 to Fig. 3, which are a three-dimensional exploded schematic view of an embodiment of the present invention and a schematic cross-sectional view of an embodiment of the present invention; The spherical film 26 is formed, and the bottom of the floating cup body 25 is provided with a socket, for the spherical film 26 to be fixed with a fixed column, so that the weight of the liquid that the container can store is increased, so as to improve the descending effect of the container when the plug is stopped. , and make the spherical membrane 26 more flexible stopper fit.

As shown in Fig. 3A, in one embodiment of the present invention, when the dripping liquid in the syringe 10 has dripped out, there is no dripping liquid injection in the connecting cup 30, at this moment, the liquid level in the connecting cup 30 drops, and the floating cup The body 25 also descends thereupon, because the dripping liquid is also contained in the cup body, under the action of gravity, the bottom of its spherical film 26 will be quickly absorbed and closely attached to the dripping port 34, to block the profile of remaining dripping liquid and air schematic diagram.

As shown in FIG. 3B , in one embodiment of the present invention, the relative swing angle of the floating cup body 25 and the connecting cup 30 is very limited. Therefore, even if the floating cup body 25 is tilted down, the spherical film 26 is sufficient to cover it, and stick to it. A schematic cross-sectional view of the drip outlet 34.

Please refer to Fig. 4, which is an embodiment of the present invention, a schematic diagram of the actual injection configuration; as shown in the figure, the injection cylinder part 10, the floating drip stop part 20, the connection cup 30 and other components are composed Control structure, the connecting end 16 of the syringe part 10 is connected to a drainage tube 40, and a flow control device 50 is provided at an appropriate position of the drainage tube 40, and a pointed joint 60 is installed at the end of the drainage tube 40 for inserting drips The bottom of the bottle 70 while introducing the drip.

Here, it is intended to emphasize that it is the most important creative spirit of the present invention to be able to block dripping liquid and air when drip injection is completed, and is not affected by shaking or tilting; part 20, connecting cup 30 and other components; wherein, the characteristic of the spherical film 26 is that the spherical film has better contact and no direction restriction, and the range in which the top edge 22 of the drip-stop part 20 can shake is always Within the range covered by the spherical surface, and the spherical film 26 has appropriate flexibility, even when the injection barrel 10 and the connecting cup 30 are shaken or tilted greatly, the spherical film 26 can also rely on its better contact and no direction restrictions. Due to the structural features of anti-dripping properties, the anti-drip part 20 can be lowered to the injection outlet 12, and the fitting anti-drip part can further ensure its anti-drip effect, so it can greatly improve the existing products. The lack of device failure improves the safety of use and reduces the burden on medical resources, which is an obvious improvement; in addition, when it is emphasized again, the spherical film 26 will not generate wrinkles and gaps, and there is no concern about leakage; Its structural features and the formed space patterns are the essence of the invention.

Claims (2)

1. the control structure of a dropping injection tube is characterized in that: comprise that an injection tube portion and is built-in with the cup that continues that ends the portion of dripping:

This injection tube portion is the injection tube for a hollow form, and the bottom is provided with the injection outlet and reaches fixedly bulge loop, and the top then is provided with the end that continues;

This cup that continues is the cup that is built-in with the portion of end dripping for a hollow form, is sleeved on fixedly bulge loop with perforate, and the cup below be provided with ooze mouth just injection can flow out; It is characterized in that: should end the portion of dripping, can be and be provided with a floating cup and a bottom is the detent plug container that the sphere thin film is constituted, and this container can be contained by floating cup and hold more liquid and the bottom has the sphere thin film, by this sphere thin film excellent contact and directionless restricted, do not rocked or obliquity effects to make things convenient for the detent plug effect, significantly but the reduction motion space of error and both swing the angle of inclination relatively, make the sphere thin film be enough to contain to ooze mouthful and really detent plug fit.

2. the control structure of dropping injection tube according to claim 1, it is characterized in that: this floating cup can be a hard cup, and this sphere thin film can be independent soft diaphragm, and the bottom of floating cup is provided with a jack, can insert admittedly with fixed leg for the sphere thin film, so that the sphere thin film has the motility effect of enhancement detent plug cooperation because of the suspention effect of fixed leg.

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