Vascular Access Needle 45mm
Most large bones in the human body are hollow, filled with soft bone marrow. Bone marrow contains fat and other supporting tissues, but its most important component is hematopoietic stem cells, which divide all the time and can differentiate into red blood cells, white blood cells and platelets. And every day, hundreds of billions of new blood cells are introduced into the bloodstream. These new cells enter the bloodstream through small pores in the small capillaries in the bone marrow Vascular Access Needle and through the capillaries they enter larger blood vessels and leave the bone.
Description
Product Specification
Product name | Vascular Access Needle 45mm |
Material | Stainless steel, etc. |
| Properties | Injection & Puncture Instrument |
| Needle Size | 15G or Custom Size |
| Machining Technology | Necking, swaging, grinding , laser cutting, laser marking, Electropolishing, etc. |
Custom feature | According to your 2D/3D Drawing or sample provided |
Package | Standard carton or according to customer's requirement |
Product Show
Most large bones in the human body are hollow, filled with soft bone marrow. Bone marrow contains fat and other supporting tissues, but its most important component is hematopoietic stem cells, which divide all the time and can differentiate into red blood cells, white blood cells and platelets. And every day, hundreds of billions of new blood cells are introduced into the bloodstream. These new cells enter the bloodstream through small pores in the small capillaries in the bone marrow Vascular Access Needle and through the capillaries they enter larger blood vessels and leave the bone.
First of all, hematopoietic stem cells are collected from the body of the donor. The most common way is to circulate the donor's blood several times through the instrument to make it separate out different components, so as to filter out the hematopoietic stem cells. Another method is to use a needle directly to extract bone marrow from the iliac crest of the hip. Meanwhile, the recipient is prepared for a transplant, with high-dose chemotherapy followed by radiation to kill the patient's existing bone marrow, killing both cancer and hematopoietic stem cells. Of course, this also weakens the immune system and makes it less likely to attack the transplanted cells, which are then injected into the patient via the Central Line.
The cells initially circulate in the blood outside the patient, but molecules called chemokines on the stem cells act as homing agents, inducing them to quickly migrate to the bone marrow. Within a few weeks, the stem cells begin to multiply and produce new healthy blood cells. Just a few stem cells can regenerate the healthy bone marrow that the whole body needs.
Bone marrow transplants can also lead to plant-antitumor responses, in which the donated bone marrow produces new immune cells that can wipe out cancerous cells that the patient's original immune system could not, a phenomenon that can help eradicate stubborn blood cancers. But bone marrow transplants also carry certain risks, including graft-versus-host disease, which occurs when the immune Vascular Access Needle system created by the donor cells attacks the patient's original organs.
From any donor who is not a relative of the twins, 30 to 50 percent of patients who receive donor cells develop the life-threatening symptoms. Especially if stem cells are collected from blood rather than bone marrow Vascular Access Needle , patients can take immunosuppressive drugs or remove specific immune cells from donor blood to reduce the risk of transplantation against host disease. But even if patients survive GVHD, their own immune systems may reject the donor cells.
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Vascular Access Needle 45mm
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