CN215193784U

CN215193784U - Injection device capable of quickly and equivalently releasing liquid by single-hand operation

Info

Publication number: CN215193784U
Application number: CN202121007703.9U
Authority: CN
Inventors: 黄蓉; 江会; 王晔; 蔡晨婷
Original assignee: Shanghai First Maternity and Infant Hospital
Current assignee: Shanghai First Maternity and Infant Hospital
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-12-17
Anticipated expiration: 2031-05-12

Abstract

The utility model discloses an injection device capable of rapidly releasing liquid in equal quantity by single-hand operation, which comprises a bracket, wherein the bracket is connected with a shell, a push rod and a sliding claw sleeve are arranged in the shell, a convex guide rail is arranged on the inner wall of the shell, the guide rail is clamped between the push rod and the sliding claw sleeve, the left end of the sliding claw sleeve is connected with a piston push rod, a limit ring is arranged on the piston push rod, the end of the piston push rod is connected with a piston, the left end of the shell is connected with a three-way pipe, the upper end and the lower end of the three-way pipe are respectively provided with an upper ball valve and a lower ball valve, the utility model discloses a ball pen type driving structure, which can release a certain dosage of medicament once and draw the medicament once again, and reciprocates in such a way until a medicament source is exhausted, the liquid can be rapidly released in equal quantity by single-hand operation, and the liquid is released and drawn by utilizing Pascal law through the three-way pipe matched with the ball valve, the whole process is quicker and quicker, can easily deal with the allocation task with larger workload, and is worth popularizing.

Description

Injection device capable of quickly and equivalently releasing liquid by single-hand operation

Technical Field

The utility model relates to the technical field of medical treatment, specifically be an injection device that can singlehanded operation release liquid by quick equivalent.

Background

Syringes are a common medical device. As early as the 15 th century, kathler, italian, proposed the principle of the syringe. Gas or liquid is primarily drawn or injected with a needle.

The advent of syringes is an epoch-making revolution in the field of medical devices. This process of drawing, injecting gas or liquid with a needle is called injection. The injector consists of a syringe with a small hole at the front end and a matched piston core rod, and is used for injecting a small amount of liquid or extracting the liquid or the liquid from the inaccessible area by other methods, wherein the liquid or gas is sucked from the small hole at the front end of the syringe when the core rod is pulled out, and the liquid or gas is extruded when the core rod is pushed in.

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.

However, in the practice of medical personnel, syringes are not only used for the physical administration of a medicament to a patient, but are also often used for dispensing a medicinal solution. Medical personnel often need to add a fixed dose of a liquid drug to a fixed volume of saline. In the face of the dispensing task with a large amount of work, the use of a conventional syringe is time-consuming and laborious, and therefore an injection device is designed which can be operated with one hand to release liquid quickly and in equal amounts.

Disclosure of Invention

In order to overcome the deficiencies of the prior art, the utility model provides an injection device which can be operated by a single hand and can release liquid in a quick and equivalent manner, and the problem that can effectual solution background art provide.

The utility model provides a technical scheme that its technical problem adopted is:

an injection device capable of quickly and equivalently releasing liquid by single-hand operation comprises a bracket, a shell is connected with the bracket, a push rod and a sliding claw sleeve are arranged in the shell, a convex guide rail is arranged on the inner wall of the shell, the guide rail is clamped between the push rod and the sliding claw sleeve, a push rod spring is arranged on the outer side of the push rod, the left end of the sliding claw sleeve is connected with a piston push rod, the piston push rod is provided with a limit ring, the inner wall of the shell is provided with a limit clamping groove, a return spring is arranged between the limit ring and the limit clamping groove, the end of the piston push rod is connected with a piston, the left end of the shell is connected with a three-way pipe, the upper end and the lower end of the three-way pipe are respectively provided with an upper ball valve and a lower ball valve, the lower end of the three-way pipe is connected with a medicament bottle, the upper end of the three-way pipe is connected with an injector cylinder through a rubber conduit, and an injector needle is arranged on the injector cylinder.

Further, a bubble level meter is arranged on the support.

Further, the push rod is connected with an operation button.

Furthermore, a sealing rubber sleeve is arranged at the connecting part of the medicament bottle and the three-way pipe.

Further, a needle head protective sleeve is arranged on the outer side of the needle head of the syringe.

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

(1) the utility model can release a certain dosage of medicine once and draw the medicine once again through the ball pen type driving structure, and the operation is repeated until the medicine source is exhausted, so that the quick and equivalent liquid release can be realized by one-hand operation;

(2) the utility model discloses a ball valve about the three-way pipe cooperation has utilized pascal's law to drive liquid release and draw, and whole process is swift more rapidly, can easily deal with the great allotment task of work load, is worth promoting.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the utility model at a;

fig. 3 is a schematic structural diagram of the position B of the present invention.

Reference numbers in the figures:

1-bracket, 2-shell, 3-push rod, 4-sliding claw sleeve, 5-guide rail, 6-push rod spring, 7-piston push rod, 8-limit ring, 9-limit clamping groove, 10-reset spring, 11-piston, 12-tee pipe, 13-upper ball valve, 14-lower ball valve, 15-medicament bottle, 16-rubber catheter, 17-syringe barrel, 18-syringe needle, 19-bubble level meter, 20-operating button, 21-sealing rubber sleeve and 22-needle protective sleeve.

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.

As shown in fig. 1 to 3, the utility model provides an injection device capable of releasing liquid in a rapid and equivalent manner by one-hand operation, which comprises a bracket 1, wherein the bracket 1 is connected with a shell 2, a push rod 3 and a sliding claw sleeve 4 are arranged in the shell 2, a convex guide rail 5 is arranged on the inner wall of the shell 2, the guide rail 5 is clamped between the push rod 3 and the sliding claw sleeve 4, a push rod spring 6 is arranged on the outer side of the push rod 3, a piston push rod 7 is connected with the left end of the sliding claw sleeve 4, a limit ring 8 is arranged on the piston push rod 7, a limit clamping groove 9 is arranged on the inner wall of the shell 2, a reset spring 10 is arranged between the limit ring 8 and the limit clamping groove 9, a piston 11 is connected with the end of the piston push rod 7, a three-way pipe 12 is connected with the left end of the shell 2, an upper ball valve 13 and a lower ball valve 14 are respectively arranged at the upper end and the lower end of the three-way pipe 12, the lower end of the three-way pipe 12 is connected with a medicament bottle 15, the upper end of the three-way pipe 12 is connected with an injector cylinder 17 through a rubber conduit 16, and an injector needle 18 is arranged on the injector cylinder 17.

The utility model discloses a theory of operation does: when the medical ball pen is used, the shell 2 is supported by the support 1, the push rod 3 of a ball pen type driving structure, the sliding claw sleeve 4 and the guide rail 5 are arranged in the shell 2, and medical work can release a certain amount of medicament once and draw the medicament once again like pressing a ball pen by pressing the push rod 3; the next push releases a dose of medicament and the next push draws medicament, and so on until the supply of medicament in the vial 15 is exhausted. The quantity of the medicament released each time is related to the cross section area of the medicament bottle 15 and the length of the mutual meshing of the sliding claw sleeve 4 and the push rod 3; the piston 11 moves back and forth, liquid is driven to be released and drawn by using the Pascal law, the upper ball valve 13 and the lower ball valve 14 move up and down in a matching manner, when the push rod 3 is pressed, the piston 11 moves leftwards to push and drive the upper ball valve 13 to move upwards, the lower ball valve 14 is kept at the lower end of the three-way pipe 12 to be fixed, and at the moment, the liquid enters the syringe barrel 17 through the rubber conduit 16 and is finally output through the syringe needle 18; when the push rod 3 is pressed again, the piston 11 moves rightwards, the upper ball valve 13 is located at the lower end of the three-way pipe 12 and is not moved, the lower ball valve 14 moves upwards, a channel at the lower end of the three-way pipe 12 is opened, and medicine is drawn into the three-way pipe 12.

In a preferred embodiment, the bracket 1 is provided with a bubble level gauge 19, so that the device can be conveniently adjusted to be horizontal, and the ball valve can normally operate in a horizontal state.

In a preferred embodiment, the push rod 3 is connected with an operation button 20, so that the push rod is convenient to press and more comfortable to operate, and a silica gel type button can be adopted to improve friction.

In a preferred embodiment, a sealing rubber sleeve 21 is arranged at the connection part of the medicine bottle 15 and the three-way pipe 12, so that the sealing performance is improved, and the medicine leakage is avoided.

In a preferred embodiment, a needle protecting sleeve 22 is disposed outside the syringe needle 18 to protect the needle structure.

To sum up, the utility model discloses a key feature lies in:

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An injection device capable of being operated by a single hand to quickly and equivalently release liquid, which comprises a bracket (1) and is characterized in that: the support (1) is connected with a shell (2), a push rod (3) and a sliding claw sleeve (4) are arranged in the shell (2), a convex guide rail (5) is arranged on the inner wall of the shell (2), the guide rail (5) is clamped between the push rod (3) and the sliding claw sleeve (4), a push rod spring (6) is arranged on the outer side of the push rod (3), the left end of the sliding claw sleeve (4) is connected with a piston push rod (7), a limiting ring (8) is arranged on the piston push rod (7), a limiting clamping groove (9) is arranged on the inner wall of the shell (2), a reset spring (10) is arranged between the limiting ring (8) and the limiting clamping groove (9), a piston (11) is connected to the tail end of the piston push rod (7), a three-way pipe (12) is connected to the left end of the shell (2), an upper ball valve (13) and a lower ball valve (14) are respectively arranged at the upper end and the lower end of the three-way pipe (12), the lower end of the three-way pipe (12) is connected with a medicament bottle (15), the upper end of the three-way pipe (12) is connected with an injector cylinder (17) through a rubber conduit (16), and an injector needle (18) is arranged on the injector cylinder (17).

2. A single-handed quick-action liquid equivalent dispensing syringe as claimed in claim 1, wherein: and a bubble level meter (19) is arranged on the bracket (1).

3. A single-handed quick-action liquid equivalent dispensing syringe as claimed in claim 1, wherein: the push rod (3) is connected with an operation button (20).

4. A single-handed quick-action liquid equivalent dispensing syringe as claimed in claim 1, wherein: and a sealing rubber sleeve (21) is arranged at the connecting part of the medicament bottle (15) and the three-way pipe (12).

5. A single-handed quick-action liquid equivalent dispensing syringe as claimed in claim 1, wherein: a needle head protective sleeve (22) is arranged on the outer side of the syringe needle head (18).