Puncture biopsy sleeve needle-knife for cystic-solid mass

Abstract

The invention discloses a puncture biopsy sleeve needle-knife for cystic-solid mass. The puncture biopsy sleeve needle-knife is composed of two parts, namely a puncture biopsy needle sheath and an inner core sleeve needle-knife, wherein the inner core sleeve needle-knife penetrates through the puncture biopsy needle sheath; the relative positions of the inner core sleeve needle-knife and the puncture biopsy needle sheath are fixed by clamping a needle base buckle with a needle base clamping groove; a tip arc blade of the inner core sleeve needle-knife is tightly attached to the inner wall of a hollow needle rod of the sheath; and when the tip arc blade is jointed with the inner lateral wall of a tip side surface needle hole at the tip of a sheath side surface needle hole, a fodder chopper effect is formed, small tissue blocks which gradually protrude into the top side surface needle hole are cut off, the top side surface needle hole is blocked. According to the puncture biopsy sleeve needle-knife, the liquid between tissues can be absorbed; few solid tissues required by pathological diagnosis can be obtained; on the basis of avoiding the defects of traditional puncture needle aspiration biopsy, the multi-purposes of the needle are realized; and the puncture biopsy sleeve needle-knife is simple and fast, and small in wound, and is hoped to be an ideal diagnostic method for clinical solid mass diseases.

Description

technical field [0001] The invention belongs to the field of medical instruments, in particular to a trocar knife for puncture biopsy of cystic and solid masses. Background technique [0002] Solid or cystic mass is a common disease in the body. So far, in clinical medicine, in addition to auxiliary diagnosis such as ultrasonic blood examination, tomographic scan and MRI, the most important thing is to obtain a small amount of mass tissue for pathological examination through minimally invasive means, which is a thorough treatment. The most important means of examination before, often referred to as: final diagnosis. At present, there is a needle aspiration puncture method. After the puncture needle is punctured into the mass, it uses the principle of negative pressure suction with a syringe, and strives to obtain a small amount of mass tissue or interstitial fluid for diagnosis. However, due to the tissue toughness of the mass living tissue, often Because it is difficu...

AI Technical Summary

Problems solved by technology

At present, there is a needle aspiration puncture method. After the puncture needle is punctured into the mass, it uses the principle of negative pressure suction with a syringe, and strives to obtain a small amount of mass tissue or interstitial fluid for diagnosis. However, due to the tissue toughness of the mass living tissue, often Because it is difficult to aspirate the tissue, or the obtained interstitial fluid cannot be used for pathological diagnosis, the problem of puncture to obtain tissue from solid masses has not been resolved

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