Bone biopsy needle

Abstract

The invention discloses a bone biopsy needle and provides an implant and a method for establishing a bacterial biofilm infected animal model. The implant is a hollow tubular object; one end of the implant is aculeated and used for piercing the skin of an animal to be molded. The invention also provides a method for establishing the bacterial biofilm infected animal model by using the implant. The implant and the method for establishing the bacterial biofilm infected animal model do not need open operations, are simple and convenient to operate, not only are suitable for larger animals like rabbit, guinea pig and rat, but also can be used for laboratory rats. Moreover, the wound surfaces are small, and the animals can recover quickly. Therefore, the bad influences of anthropogenic factors like operative procedures and the like on the experimental animals can be effectively limited; and the condition control during the establishing of models is improved.

Description

technical field [0001] The invention relates to a tissue puncture biopsy needle, in particular to a bone puncture biopsy needle. Background technique [0002] In the process of disease diagnosis and treatment, tissue biopsy can be used to understand the development of the disease and test the effect of treatment. Therefore, how to quickly, accurately and conveniently take out the biopsy tissue is particularly important. Currently commonly used biopsy needles for bone tissue sampling see figure 1 and figure 2 , figure 1 It is a schematic diagram of a prior art bone biopsy needle, figure 2 It is an exploded view of a prior art bone puncture biopsy needle. As shown in the figure, the bone biopsy needle is a hollow needle with a handle, including a needle core 1 , a needle sheath 2 and a handle 3 . The core has a sharp needle, and the core is slightly longer than the sheath so that the needle protrudes beyond the sheath. The opening of the needle sheath is sharpened for...

AI Technical Summary

Problems solved by technology

But this kind of bone biopsy needle has obvious disadvantages: due to the smooth inner wall of the needle sheath, even if the needle sheath punctures into the lesion tissue, it is difficult to remove the lesion tissue only relying on the axial cutting of the needle sheath and the slight friction force of the smooth inner wall of the needle sheath Or get a sufficient amount of lesion tissue, especially when it is expected to take out bony or hard lesion tissue that is difficult to separate

Once unsuccessful, it is necessary to puncture again or multiple times until a sufficient amount of bone tissue is successfully removed, which brings great pain to the patient and increases the occurrence of complications such as tissue loss and bleeding.

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