Most traditional bone marrow biopsy needles adopt single-end sampling holes, which carry inherent drawbacks including insufficient specimen volume, uneven bone marrow collection, squeezed tissue and requirement for repeated punctures. These issues impair the accuracy of pathological testing and worsen patient discomfort. To resolve these challenges, professional medical device manufacturers have innovatively developed a front five lateral hole multi-dimensional sampling system integrated into diamond tip bone marrow biopsy needles. It enables multi-angle, high-efficiency and low-trauma bone marrow sampling, emerging as representative high-performance biopsy technology widely used for haematological disorders, bone marrow lesions and tumour screening.

The core strength of the five lateral hole configuration lies in multi-dimensional stereoscopic sampling that overcomes constraints of single-hole designs. Conventional single-hole needles only harvest limited local bone marrow tissue and fluid within a narrow sampling range. Lesion tissue may be missed, necessitating repeated punctures to supplement specimens and increasing patient trauma and operation duration. The distributed five lateral holes arranged at the needle tip collect bone marrow tissue and fluid simultaneously from multiple directions once the target position is reached. The wider sampling coverage delivers sufficient intact bone marrow trabeculae, haematopoietic cells and lesion cells to supply high-quality comprehensive specimens for pathological biopsy, cytological analysis and immune testing.

In terms of minimally invasive pain reduction, the five lateral hole system paired with diamond tips achieves a perfect balance between efficient sampling and limited trauma. The diamond tip rapidly penetrates cortical bone without repeated twisting movements. Supported by multi-hole negative pressure collection, adequate specimens are obtained without expanding puncture wounds, minimising damage to bone and soft tissue. Compared with traditional devices, the structure effectively reduces intraoperative stabbing pain, postoperative soreness, bleeding and bruising. It is suitable for elderly patients, frail individuals and immunocompromised groups with low physical tolerance, aligning with core concepts of modern minimally invasive medicine.

From a manufacturing perspective, the five lateral hole system imposes stringent requirements on manufacturers' precision processing capacity. Precise control over aperture size, hole spacing and drilling angles ensures uniform stress and unobstructed fluid flow without compromising tube wall structural strength. Manufacturers utilise high-precision laser cutting to form five lateral holes in one step. Hole edges remain smooth, deformation-free and burr-free to avoid tissue scratching and cell retention caused by rough apertures. Electropolishing further optimises inner wall smoothness to prevent blockage from adhered bone marrow tissue and guarantee continuous unimpeded sampling.

In clinical practice, multi-dimensional sampling via five lateral holes markedly improves pathological diagnostic accuracy, reduces secondary puncture frequency and elevates departmental treatment efficiency. Sufficient, intact multi-directional specimens are critical for precise diagnosis of difficult conditions such as multiple myeloma, myelodysplastic syndromes and occult metastatic bone tumours. The optimised five-hole sampling system from manufacturers perfectly meets diagnostic requirements for complex cases. Currently compatible with mainstream clinical gauges ranging from 10G to 18G for mass production and customisation, this structure acts as a key technical benchmark distinguishing mid-to-high-end biopsy needles from low-end generic alternatives.