Anti-needling assembly

Abstract

The invention provides an anti-needling assembly, which comprises a needle tip protection sleeve and a needle return prevention structure, the needle tip protection sleeve is provided with a puncture channel allowing a needle tube to pass through, and the needle return prevention structure is arranged at the puncture channel to achieve communication / closing of the puncture channel. The anti-needling assembly has the advantages that the repeated puncture frequency can be reduced, a user is effectively prevented from making contact with the needle tip after the catheter is inserted into the blood vessel of a patient and the needle tube is pulled out of the catheter base, the user is prevented from making contact with residues on the needle tip, and medical staff can use the anti-needling assembly conveniently.

Description

technical field [0001] The invention relates to the field of venous indwelling needles, and more specifically relates to a needle-stick prevention assembly. Background technique [0002] In today's society, infusion therapy is a common means of disease treatment, and ordinary infusion needles need to puncture the patient once for each infusion. For patients who need long-term infusion therapy, this will undoubtedly increase the workload of medical staff and improve medical care. The risk of personnel being infected by puncture wounds, while repeated punctures also aggravate the pain of patients. For the open indwelling needle, it is judged whether the indwelling needle has pierced the patient's blood vessel by observing whether the blood return cavity in the catheter adapter has returned blood. The time it takes to flow back to the blood cavity is much longer than the time it takes for the medical staff to puncture the blood vessel. As a result, it often penetrates the back...

AI Technical Summary

Problems solved by technology

[0005] a) The current mainstream products on the market do not contain any safety device to prevent needle tip injury, or only set a safety clip to protect the user, but do not set an outer cover or an outer cover surrounding the safety clip, although the spring clip can prevent The user touches the needle tip of the needle tube, but he cannot prevent the user from touching the blood remaining on the needle tip, especially when the needle tube is provided with a blood return groove, so this safety device is still unsafe

[0006] b) Most of the existing relatively mature indwelling needle products with outer covers require additional operations to make the safety device work, which increases the workload and operational difficulty of medical staff; and in the process of operating and unlocking the safety device, it is easy The indwelling sleeve that has been successfully punctured slips out of the blood vessel, resulting in puncture failure and the need for re-puncture, causing fearless pain to the patient

[0007] c) The main form of existing relatively mature indwelling needle products with automatic activation of the safety device (that is, the safety device can automatically function when the needle tube is withdrawn) is that the outer cover of the safety device needs to be hooked under the action of the safety clip On the indwelling needle catheter base, the safety clip is directly affected by the extrusion force of the catheter base on the outer wall of the needle tube. The final result is that in the process of operating the unlocking safety device, the indwelling sleeve that has been successfully punctured is likely to slip. Out of the blood vessel, resulting in puncture failure, still need to re-puncture, causing unnecessary pain to the patient

[0008] In addition, due to the anti-needle stick safety device added between the needle tube assembly and the catheter hub assembly, the needle-stick-proof indwelling needles currently on the market are relatively long in the direction of the needle tube, and due to the gap between the components Because of the above reasons, the overall shaking of the needle tube is relatively large when the needle handle is punctured, making it difficult for medical staff to control the puncture force and puncture angle, which is inconvenient for medical staff to use

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