Bone marrow collecting filtering device and method

Abstract

The invention belongs to the technical field of medical equipment, and discloses a bone marrow collecting filtering device and method. The device is provided with an injector with a hole, a connectinghole and a filtering tube; the bone marrow collecting function can be achieved, the injector with the hole is connected with a puncture needle, and the bone marrow is extracted; compared with a traditional injector with a hole, the connecting hole connected with the outside is additionally formed in the injector with the hole and can be connected with the filtering tube for filtering and conveying the bone marrow in the sealing state; a first filtering screen with the bore diameter of 300 microns can filter out small bone marrow particles composed of tissue cells and bone and skin chippings to avoid the blockage of a catheter; a second filtering screen with the bore diameter of 100 microns can filter out fat droplets, hematopoiesis islet cell clusters and the like to avoid that after thebone marrow is injected in the human body, embolism and other complications can be easily caused; a flowmeter can monitor the flow speed; a single chip microcomputer can analyze changes of the flow speed to determine whether or not impurities are contained in the bone marrow liquid; a blood pump provides power to make the collected bone marrow flow in the device, and the efficiency of the filtering process is improved.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, and in particular relates to a bone marrow collection and filtration device and method. Background technique [0002] At present, the commonly used existing technology in the industry is as follows: because the bone marrow fluid contains a large number of fat droplets, hematopoietic island cell clusters, macrophages and fibroblasts composed of bone marrow granules and other bulky substances, it is easy to cause disease after infusion into the patient's body. Embolism and other complications, so these substances must be filtered out during the bone marrow fluid collection process; the existing technology uses a small-aperture needle to filter the bone marrow, and the small-aperture needle is easy to block. The bone marrow sticks to the replaced needle, causing waste; the existing technology uses a filter or membrane to filter the bone marrow, and the bone marrow passes through the filter...

AI Technical Summary

Problems solved by technology

[0005] (2) The existing technology uses small-aperture needles to filter bone marrow. Small-aperture needles are easy to clog, which not only delays time in the process of needle replacement, but also easily causes bone marrow pollution. At the same time, bone marrow adheres to the replaced needle, resulting in waste.

[0006] (3) The existing technology uses a filter screen or a filter membrane to filter the bone marrow, and the bone marrow passes through the filter screen through its own gravity. The process takes a long time, and it is impossible to confirm whether the filtered bone marrow still contains large particles of impurities

[0007] (4) The calculation of the flow rate of bone marrow in the filtering device in the prior art is slow and inaccurate, and the control ability of the device that provides power for the collection device is poor, and the stability of bone marrow collection cannot be ensured.

[0008] (5) The statistical results of the flow rate during the bone marrow collection process are inaccurate

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