CN209900310U

CN209900310U - Disposable skin test syringe

Info

Publication number: CN209900310U
Application number: CN201920336368.3U
Authority: CN
Inventors: 赵杨秋; 崔杨慧; 段明珍; 徐子昂; 王若涵
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-15
Filing date: 2019-03-15
Publication date: 2020-01-07
Anticipated expiration: 2029-03-15

Abstract

The utility model discloses a disposable skin test injector, which comprises a thickening injection tube (1), wherein a large piston (2) which is in sliding fit with the thickening injection tube (1) in an axial sealing manner is arranged in the thickening injection tube (1), a piston push rod (3) is arranged at the end part of the large piston (2), and the thickening injection tube (1) extends from the end part of the piston push rod (3); the end part of the thickened injection tube (1) extends outwards and axially to form a small injection tube (4) with the diameter of 1ml concentric with the end part. The utility model has simple structure and convenient operation; the diameter of the injection tube is increased to be thick, so that the skin test solution can be fully and uniformly mixed in the preparation process, and the phenomenon of inaccurate concentration of the liquid medicine is effectively avoided; the bayonet design of the injector at the position of 0.1ml ensures that the operation is more accurate and convenient, the configuration speed is increased, and the working efficiency is increased; the exposed part of the piston is reduced when the liquid medicine is diluted, so that the iatrogenic infection is effectively prevented.

Description

Disposable skin test syringe

Technical Field

The utility model relates to a medical care apparatus and the related processing and manufacturing, in particular to a disposable skin test injector.

Background

The preparation of the skin test solution is an important nursing technical operation of nurses, and whether the preparation method is correct or not and whether the dosage of the skin test solution is accurate or not directly relate to the skin test result and the application safety of patients. At present, the most common clinical skin test solution is prepared into penicillin and cephalosporin, the preparation at least needs 4 steps, wherein 3 steps need to uniformly mix the liquid medicine in a narrow space of a 1ml syringe, the diameter of the 1ml syringe is small, the liquid in a tube cavity flows unsmoothly, and the content of the liquid medicine is easy to cause inaccuracy; the process of diluting 0.1ml to 1ml for three times, and the phenomenon of inaccuracy is easy to occur when 0.1ml is left for each time; the final dilution concentration of the skin test solution is 1/1000 of the stock solution, and in the preparation process, the final skin test solution concentration can be influenced to a great extent due to inaccurate amount of extracted liquid medicine or dilution solution, insufficient and uniform mixing of the liquid medicine and the like; when the diluted solution is diluted to 1ml, more than 80% of the part of the syringe piston is exposed, and the skin test solution is easy to be polluted in the repeated dilution operation process.

Disclosure of Invention

The utility model aims at providing a disposable skin test injector, which can effectively solve the problems existing in the background technology.

In order to solve the problems existing in the background technology, the injection device comprises an thickened injection tube 1, a large piston 2 which is in sliding fit with the thickened injection tube 1 in an axial sealing manner is arranged in the thickened injection tube 1, a piston push rod 3 is arranged at the end part of the large piston 2, and the end part of the piston push rod 3 extends out of the thickened injection tube 1; it is characterized in that the end part of the thickened syringe 1 extends outwards and axially to form a small syringe 4 of 1ml concentric with the thickened syringe;

the end of the small syringe 4 extends axially outwards to form a cannula 41 communicated with the interior of the small syringe.

The volume of the large syringe 1 is 0.9-1 ml.

The volume of the small syringe 4 is 0.1 ml.

Owing to adopted above technical scheme, the utility model discloses following beneficial effect has: the structure is simple, and the operation is convenient; the diameter of the injection tube is increased to be thick, so that the skin test solution can be fully and uniformly mixed in the preparation process, and the phenomenon of inaccurate concentration of the liquid medicine is effectively avoided; the bayonet design of the injector at the position of 0.1ml ensures that the operation is more accurate and convenient, the configuration speed is increased, and the working efficiency is increased; the exposed part of the piston is reduced when the liquid medicine is diluted, so that the iatrogenic infection is effectively prevented.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purpose and efficacy of the present invention easy to understand, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention.

Example 1

Referring to fig. 1, the present embodiment includes an enlarged syringe 1, a large piston 2 axially and hermetically sliding-fitted in the enlarged syringe 1 is disposed inside the enlarged syringe 1, a piston push rod 3 is mounted at an end of the large piston 2, and an end of the piston push rod 3 extends out of the enlarged syringe 1; it is characterized in that the end part of the thickened syringe 1 extends outwards and axially to form a small syringe 4 of 1ml concentric with the thickened syringe;

The volume of the large syringe 1 is 0.9-1 ml.

The volume of the small syringe 4 is 0.1 ml.

Example 2:

in this example, a penicillin skin test solution is prepared as an example;

the volume of the small syringe 4 is 0.1ml in the present embodiment;

the volume of the large syringe 1 is 1ml in the present embodiment;

firstly, diluting 80 wu of standard penicillin powder with 2ml of normal saline and uniformly mixing to obtain 40 wu/ml of high-concentration mixed skin test stock solution;

first dilution 10-fold operation: 0.1ml of high-concentration mixed skin test stock solution is extracted through an injection needle and diluted to 1ml, and the concentration of the liquid medicine after the first dilution is 4 ten thousand u/ml. The method comprises the following specific operation steps: in the process of extracting the high-concentration mixed skin test stock solution, firstly, an injection needle is punctured into a penicillin sealed bottle, the penicillin sealed bottle is kept at the vertical position of an upper skin test injector and a lower skin test injector, a large piston 2 is driven to move downwards through a piston push rod 3, and the high-concentration mixed skin test stock solution is sucked into a thickened injection tube 1 in the process of moving downwards; sucking to 0.2-0.3ml scale mark, driving the large piston 2 to move upwards through the piston push rod 3, and pushing the air and the redundant liquid medicine which escape to the front end of the injector back into the penicillin sealed bottle; when the piston 2 moves upwards to a bayonet of 0.1ml of the injector (namely the edge of the small injection tube 4 and the large injection tube 1), the injection needle is pulled out, and the volume of the high-concentration mixed skin test stock solution in the small injection tube 4 is 0.1 ml; then the piston push rod 3 drives the large piston 2 to move upwards, and the injection needle continuously extracts physiological saline for dilution by 10 times for the first dilution;

second dilution 10-fold operation: fully and uniformly mixing the liquid medicine; then the end of the large piston 2 is pushed out to the end of the large injection tube 1, and only 0.1ml of 10 times diluted mixed skin test stock solution is left at the time; then the piston push rod 3 drives the large piston 2 to move upwards, the physiological saline is continuously pumped through the injection needle to be diluted by 10 times for the second dilution operation, the dilution is carried out to 1ml, and the concentration of the liquid medicine after the second dilution is 4000 u/ml.

Third dilution 10-fold operation: the operation method is the same as the second time, the concentration of the liquid medicine is 400u/ml after the liquid medicine is diluted to 1ml, and the liquid medicine is the penicillin skin test solution with the standard concentration;

and finally, carrying out skin test operation on the injection needle according to the nursing specification, injecting 0.1ml of the injection needle into the skin, and recycling the redundant liquid medicine in the injection tube and the disposable skin test injector from a professional medical waste recycling company.

All the technical features and components in the present embodiment can be implemented by means of market procurement, and it is a clear and complete technical solution for those skilled in the art to accurately implement the technical contents and embodiments disclosed in the present application.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A disposable skin test injector comprises a thickened injection tube (1), wherein a large piston (2) which is in sliding fit with the thickened injection tube (1) in an axial sealing manner is arranged in the thickened injection tube (1), a piston push rod (3) is arranged at the end part of the large piston (2), and the end part of the piston push rod (3) extends out of the thickened injection tube (1); the injection device is characterized in that a small injection cylinder (4) of 1ml concentric with the injection cylinder (1) extends out from the end part of the injection cylinder in the axial direction;

the end part of the small syringe (4) extends outwards and axially to form a cannula (41) communicated with the interior of the small syringe.

2. A disposable skin test syringe according to claim 1, characterized in that the volume of the thickening barrel (1) is 0.9-1 ml.

3. A disposable skin test syringe according to claim 1, characterized in that the volume of the small syringe barrel (4) is 0.1 ml.