Device and method for establishing bone marrow liquid channel

Abstract

The invention relates to a device and a method for establishing a bone marrow liquid channel and realizing liquid exchange (injection or / and extraction) through the channel. The device comprises an adjusting sleeve, a retainer arranged in an inner cavity of the adjusting sleeve, a bone marrow needle component arranged in the inner cavity of the adjusting sleeve and between the retainer and a push rod, a spring chuck which is arranged in a recess of the push rod through a fixing pin and is sleeved with a check ring, a sleeve connected to one end of the adjusting sleeve, the push rod and a spring which are arranged in the sleeve, a sliding sleeve sleeved on the outer wall of the sleeve, a rear cover arranged at one end of the sleeve, and a safety pin inserted into the sliding sleeve and the sleeve, wherein an annular groove is formed on the push rod; an air vent is formed on the adjusting sleeve; and an annular step surface is formed in the adjusting sleeve. By the device for establishing the bone marrow liquid channel, a new method for conveniently injecting and accurately extracting liquid can be formed.

Description

technical field [0001] The invention relates to a device and a method for establishing a bone marrow fluid pathway and realizing fluid communication through the pathway. Background technique [0002] Intravenous injection of drugs, blood transfusion and rehydration are one of the most basic means of treating emergency patients. However, for critically ill patients with extreme dehydration, severe shock and obesity, it is often difficult to establish infusion access through venipuncture. Can only take the way of phlebotomy to finish, but phlebotomy operation is difficult, wastes time, and trauma is obvious. Failure to quickly establish an unobstructed infusion channel will seriously affect the rescue of critically ill patients. [0003] The bone marrow cavity is closely connected with the human circulatory system, and can be regarded as an indirect intravenous infusion channel that never collapses. The infusion of drugs and blood through the bone marrow cavity will provide ...

AI Technical Summary

Problems solved by technology

[0005] Traditional bone marrow puncture is not suitable for establishing infusion channels for critically ill patients such as severe shock due to many operational difficulties, high technical requirements, large subjective influence, and long time-consuming

At the same time, there are still problems of inconvenient operation and unsatisfactory effect when using traditional methods to extract bone marrow fluid.

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