Combined push type bone marrow extractor

Abstract

The present invention discloses a combined push type bone marrow extractor. The combined push type bone marrow extractor comprises a cylindrical outer shell, an anesthetic needle, a marrow extractingneedle and a puncture needle, one end of the cylindrical outer shell is provided with a sealing bottom plate, the other end of the cylindrical outer shell is movably provided with a rotating cover, the anesthetic needle, the marrow extracting needle and the puncture needle are all movably inserted in the rotating cover, a needle hole is arranged in the sealing bottom plate, besides, an inner sideof the needle hole is provided with a fixed hole, the puncture needle comprises a needle cylinder and a push-pull rod, a sliding hole is arranged in a front end of the needle cylinder, the sliding hole is internally movably provided with a fixed sleeve in a clamping manner, one end of the fixed sleeve is fixedly connected with a puncture needle head, one end of the push-pull rod is movably inserted in the sliding hole, and the other end of the push-pull rod is fixedly connected with a push-pull plate. Only one-time puncture is needed to finish operations of anesthetic injection and marrow extracting, puncture times are reduced and pains of patients caused by puncture are reduced; and a positioning structure is arranged on the surface of the device, can fix the device during the puncture and marrow extracting, conveniently completes the whole puncture and marrow fluid extraction work, at the same time can prevent needle head vibration during the puncture and marrow extracting, and the pains of the patients are avoided.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a combined push type intraosseous marrow extractor. Background technique [0002] Aspiration of bone marrow fluid by bone marrow puncture is an invasive examination method. Usually, the puncture site is firstly anesthetized, then punctured, and finally aspirated. The pain of the patient is reduced, and at the same time, when the extraction is completed and the extraction is completed, the syringe and the needle are likely to shake due to manual operation, which is likely to bring great pain to the patient. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention provides a combined propulsion type intraosseous marrow extractor. Through the combined structure, anesthesia and marrow extraction can be completed with only one puncture, which reduces the number of punctures and reduces the cost of punctures to patients....

AI Technical Summary

Problems solved by technology

[0002] Aspiration of bone marrow fluid by bone marrow puncture is an invasive examination method. Usually, the puncture site is firstly anesthetized, then punctured, and finally aspirated. It reduces the pain of the patient, and at the same time, it is easy to cause the shaking of the syringe and the needle due to manual operation during the extraction and the end of the extraction, which is likely to bring great pain to the patient.

Images