A nozzle dedicated to needle-free injectors

Abstract

The invention relates to a special nozzle for a needleless injector. The special nozzle comprises a nozzle main body (1) and an irregular space ring (2) which is suitable for the nozzle, wherein the nozzle main body (1) is composed of a spray head (3) and a conical rear end part (4); the conical rear end part (4) gradually narrows down towards the small-diameter spray head (3); the irregular space ring (2) is arranged on the spray head (3) and matched with the spray head (3); an annular groove (6) is arranged at the top end of the conical rear end part (4); a stopping device is arranged on the inner wall of the annular groove (6), and destroyed after being used once. Thus, secondary use is prevented; cross infection is also avoided.

Description

technical field [0001] The present invention relates to consumables for needle-free injectors, in particular to a nozzle part specially used for pistol-type needle-free injectors. Background technique [0002] At present, pistol-type needle-free syringes are used for human injection. The advantage of needle-free injection is that it eliminates the fear of needles and pain, can save half of the vaccine dosage, and is well absorbed. Various injection methods: intradermal, subcutaneous , Intramuscular, while being convenient, there are also problems in practical operation. In most needle-free injection processes, since the syringe is injected into the human or animal body under the low pressure and needle-free state, how can it be accurately injected into the skin or Intramuscular, how to prevent drug splashing, how to prevent secondary use and avoid cross-infection are the problems in the current operation. In addition to the pistol-type needle-free syringe for intradermal inj...

AI Technical Summary

Problems solved by technology

[0002] At present, pistol-type needle-free syringes are used for human injection. The advantage of needle-free injection is that it eliminates the fear of needles and pain, can save half of the vaccine dosage, and is well absorbed. Various injection methods: intradermal, subcutaneous , Intramuscular, while being convenient, there are also problems in practical operation. In most needle-free injection processes, since the syringe is injected into the human or animal body under the low pressure and needle-free state, how can it be accurately injected into the skin or Intramuscular, how to prevent drug splashing, how to prevent secondary use and avoid cross-infection are problems in current operations. In addition to pistol-type needle-free syringes for intradermal injections in humans or animals, they are also used in the field of cosmetology or dentistry. Due to the inflexibility of the syringe itself, it is not suitable for cosmetic or dental

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