Novel infant skin test syringe

Abstract

The invention discloses a novel infant skin test syringe, the whole syringe comprises a needle cap and a needle body, and an injection push handle is pushed without any gap when the needle cap is removed and no liquid medicine exists. The height of a needle tip is set to be 0.8 cm, the height of a needle wing is set to be 1.0 cm, the length of a needle cylinder is set to be 3.0 cm (the clinical skin test solution generally does not exceed 1ml), the total height of the finger clip limiting block, the injection push rod and the injection push handle is set to be 2.0 cm, and the total length of a needle body is about 7.0 cm. After successful puncture of a nurse, one hand fixes the forearm of a child patient and presses the needle wing, and the other hand pushes the push rod to inject liquid medicine. The aim of research and development is to set the total length of the whole needle body to be 7.0 cm which is 3 cm less than the total length of the existing clinical minimum skin test operation syringe due to the fact that the minimum 1ml syringe used clinically at present is not smooth in the skin test operation process of infants, and the pediatric clinical skin test puncture failure rate can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical appliances, in particular to a novel skin test syringe for infants. Background Art

[0002] A skin test, short for skin (or intradermal) sensitivity test, is the most commonly used specific test in clinical practice. It's often used to screen for allergenic medications before treatment, to screen for allergens in sensitive individuals, or to determine the presence of allergens in the occupational environment. It primarily detects sensitization to a specific allergen. The basic principle is that allergens bind to IgE on mast cells in the subcutaneous tissue, releasing various active substances. This causes capillary dilation and increased exudation, resulting in symptoms such as redness and wheals. It is a convenient and effective method for predicting allergic reactions.

[0003] Certain drugs are prone to allergic reactions during clinical use, such as penicillin, streptomycin, cytochrome c, etc. Common allergic reactions include rash, urticaria, dermatitis, fever, angioedema, asthma, anaphylactic shock, etc. Among them, anaphylactic shock is the most serious and can even lead to death.

[0004] In order to prevent allergic reactions during treatment, especially severe allergic reactions, some drugs that are prone to allergic reactions are required to undergo skin sensitivity tests before use. Drugs with negative skin tests can be used by patients, while those with positive skin tests are prohibited. These drugs that require skin tests are called skin test drugs.

[0005] This invention is designed to improve the success rate of pediatric skin test punctures. Existing 1ml disposable syringes for skin tests are not very successful in pediatric clinical practice. This is often due to the needle and syringe being too thin and long, the child's fear and agitation, and the child's narrow arms making it extremely difficult for the pediatric nurse to securely hold the syringe. This can lead to errors or failures in the skin test procedure, resulting in ambiguous results or repeated punctures. Therefore, to facilitate clinical procedures for pediatric nurses and to avoid the pain of repeated punctures for children, a needle wing design has been added to the existing disposable syringe to improve the success rate of skin test punctures and facilitate clinical procedures. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a new type of infant skin test syringe.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A new type of infant skin test syringe comprises an injection syringe, the upper end of the injection syringe is fixedly connected to a needle wing, the upper end surface of the needle wing and located at its central position are fixedly connected to a needle welding end, the upper end of the needle welding end is fixedly connected to a metal needle; the inner wall of the medicine storage chamber of the injection syringe is movably connected to a medicine pushing piston, the lower end surface of the medicine pushing piston is fixedly connected to an injection push rod, the lower end of the injection push rod extends to the bottom of the injection syringe and is fixedly connected to an injection push handle, the outer surface of the injection syringe is fixedly connected to a scale mark; the lower end of the injection syringe is fixedly connected to a finger clamp limit block, the end surface of the finger clamp limit block is shuttle-shaped.

[0008] As a further description of the above technical solution: A medicine storage cavity is provided inside the injection syringe.

[0009] As a further description of the above technical solution: A flow guide channel is provided inside the needle wing.

[0010] As a further description of the above technical solution: A current collecting channel is provided inside the needle welding end.

[0011] As a further description of the above technical solution: The metal needle is only eight millimeters long.

[0012] As a further description of the above technical solution: The length of the injection syringe is only thirty millimeters.

[0013] As a further description of the above technical solution: The total length of the metal needle, injection syringe, injection push rod and injection push handle does not exceed seventy millimeters.

[0014] The present invention has the following beneficial effects: Compared with the existing technology, this new infant skin test syringe shortens the needle tip and is mainly used for intradermal injection (between the epidermis and dermis), with a total length of 0.8 cm.

[0015] Compared with the existing technology, this new infant skin test syringe is easy to fix through the pin wing under the needle, so as to prevent the needle from slipping due to the infant's lack of cooperation or the puncture is too deep to form a skin mound.

[0016] Compared with the existing technology, this new infant skin test syringe sets the total length of the syringe (without the push plug) to 3.0 cm, making it easier for nurses to grasp and can be operated with one hand even if the child struggles violently.

[0017] Compared with the existing technology, this new infant skin test syringe greatly reduces the difficulty of nurses operating on the wrists of children with narrow arms by setting the total length of the needle body to no more than 7.0 cm. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a new type of infant skin test syringe proposed by the present invention; Figure 2 This is a cross-sectional view of the internal structure of a new type of infant skin test syringe proposed by the present invention; Figure 3 This is a side view of a new type of infant skin test syringe proposed by the present invention; Figure 4 This is a top view of a new type of infant skin test syringe proposed by the present invention; Figure 5 This is a bottom view of a new type of infant skin test syringe proposed by the present invention.

[0019] 1. Needle cap; 2. Needle; 3. Needle welding end; 4. Needle wing; 5. Hollow end of needle wing; 6. Scale mark; 7. Injection syringe; 8. Finger clamp limit block; 9. Injection push rod; 10. Injection push handle; 11. Drug pushing piston; 12. Diversion channel; 13. Collecting channel; 14. Drug storage chamber. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Refer to the attached Figure 1-5The present invention provides a novel infant skin test syringe: comprising a needle 2, eight millimeters long and used only for intradermal injection; an injection syringe 7, only thirty millimeters long. Since the injection volume of the skin test is small, shortening the size of the injection syringe 7 can effectively save production costs; a drug storage chamber 14 is defined inside the injection syringe 7 for storing the skin test solution; a needle wing 4 is fixedly connected to the upper end of the injection syringe 7 for convenient fixation and to prevent the needle from slipping; a guide channel 12 is defined inside the hollow end 5 of the needle wing for the passage of the drug solution in the drug storage chamber 14; the upper end surface of the needle wing 4 is fixedly connected to the needle welding end 3 at its central position; the needle welding end 3 is used to fix the metal needle 2 and has a collecting channel 13 defined inside for collecting the drug solution and delivering the drug solution to the metal needle 2; the upper end of the needle welding end 3 is fixedly connected to the metal needle 2 for puncture injection and completing the delivery when injecting or aspirating the drug. The length of the metal needle 2 is only eight millimeters, which reduces the fear of children during the injection process. The needle wing 4 is used to fit the forearm of the infant to prevent the syringe from slipping or rotating, and to prevent the nurse from slipping during operation and causing unnecessary harm to the child; the medicine pushing piston 11 is tightly fitted to the inner wall of the medicine storage chamber 14, and pushes the medicine liquid to achieve injection during injection; the lower end surface of the medicine pushing piston 11 is fixedly connected to the injection push rod 9 for transmitting the pushing force; the lower end of the injection push rod 9 is connected to the injection push handle 10 for reducing the pain of the nurse's hand when pushing the medicine. Here, the injection push handle 10 is designed as a round cake shape, and can also be designed as other special-shaped shapes that fit the fingers better; The degree scale 6 can facilitate the nurse to observe the dosage of the medicine; the total length of the metal needle 2, the needle welding end 3, the needle wing 4, the syringe 7, the injection push rod 5 and the injection push handle 6 does not exceed seventy millimeters, which reduces the overall size of the infant skin test syringe and can effectively reduce the child's fear of skin test injections; the lower end of the injection syringe 7 is fixedly connected to a finger clamp limit block 8, which is convenient for the nurse to steadily push the skin test medicine into the child's skin. The end face is shuttle-shaped, which is convenient for the nurse to fit the clamping posture of the index finger and middle finger, effectively reducing the nurse's fatigue during the injection process.

[0023] Working principle: The present invention improves and optimizes the existing disposable 1ml syringe, reduces the size of the skin test needle without affecting the use effect, effectively reduces the fear of children during the injection process, and makes the injection process go more smoothly. When in use, first inhale an appropriate amount of skin test solution into the injection syringe 4, disinfect the skin, and then insert the metal needle 2 at a zero angle to puncture the skin. The needle wing 4 is attached to the child's small arm skin to form a firm fit. The nurse uses his left hand to press the left or right side of the needle wing according to the fitting area, and the index finger and middle finger are clamped on the front end surface of the finger clamp limit block 8. Finally, the injection handle 10 is quickly pushed to complete the skin test injection.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new type of infant skin test syringe, comprising a syringe (7), characterized in that: The upper end of the injection syringe (7) is fixedly connected to a needle wing (4), the upper end surface of the needle wing (4) is fixedly connected to a needle welding end (3) at its central position, and the upper end of the needle welding end (3) is fixedly connected to a metal needle (1); the inner wall of the medicine storage cavity (14) of the injection syringe (7) is movably connected to a medicine pushing piston (11), the lower end surface of the medicine pushing piston (11) is fixedly connected to an injection push rod (9), the lower end of the injection push rod (9) extends to the bottom of the injection syringe (7) and is fixedly connected to an injection push handle (10), and the outer surface of the injection syringe (7) is fixedly connected to a scale mark (6); the lower end of the injection syringe (7) is fixedly connected to a finger clamp limit block (8), and the end surface of the finger clamp limit block (7) is shuttle-shaped.

2. A new type of infant skin test syringe according to claim 1, characterized in that: A medicine storage cavity (14) is provided inside the injection syringe (7).

3. The new infant skin test syringe according to claim 1, characterized in that: A flow guide channel (12) is provided inside the hollow end (5) of the needle wing.

4. The new infant skin test syringe according to claim 1, characterized in that: A current collecting channel (13) is provided inside the needle welding end (3).

5. The new infant skin test syringe according to claim 1, characterized in that: The length of the metal needle (2) is only eight millimeters.

6. The new infant skin test syringe according to claim 1, characterized in that: The length of the injection syringe (7) is only thirty millimeters.

7. The new infant skin test syringe according to claim 1, characterized in that: The total length of the metal needle (2), the injection syringe (7), the injection push rod (9) and the injection push handle (10) does not exceed seventy millimeters.

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