A sleeve-loaded multi-slit electromagnetic hemostatic needle

Abstract

The invention discloses a sleeve loading type multi-gap electromagnetic hemostatic needle and belongs to the field of medical equipment.The sleeve loading type multi-gap electromagnetic hemostatic needle comprises an outer conductor (1) and an inner conductor (2).The outer conductor (1) is a hollow cylinder.The inner conductor (2) is arranged in the outer conductor (1).The space between the inner conductor (2) and the outer conductor is filled with a medium layer (3), the outer conductor (1) is provided with an annular gap (4), and the outer conductor (1) is sleeved with a metal sleeve (5) which is matched with the outer diameter of the outer conductor (1) and can slide in the axial direction of the outer conductor (1).By adjusting the position of the metal sleeve, the number of effective gaps can be adjusted to be one or larger freely by means of the electromagnetic shielding principle, and therefore the electromagnetic wave acting range and the effect shape are changed, a continuous ablation and bleeding stopping face is built according to specific requirement to perform liver resection, or a thermal ablation effect is concentrated within a round range to perform local ablation treatment.

Description

technical field [0001] The invention relates to a medical device, in particular to a multi-slit electromagnetic hemostatic needle which can change the action range and effect shape of electromagnetic waves by adjusting the position of the sleeve. Background technique [0002] For liver neoplastic diseases, the best treatment option is recognized surgical resection. However, surgical resection of liver tumors is not suitable for every patient. If the primary or metastatic tumor of the liver metastasizes intrahepatically or extrahepatically, surgical resection at this time has no obvious significance; in addition, most patients with liver tumors in my country are often accompanied by severe liver cirrhosis due to long-term damage of hepatitis virus However, the reduced liver reserve function cannot tolerate surgical resection; in the above cases, only ablation of local tumor lesions to kill tumor cells has been widely approved. Before the operation, the surgeon will formulate...

AI Technical Summary

Problems solved by technology

Existing various liver resection equipments have disadvantages such as slow resection time to varying degrees, complicated surgical procedures, excessive bleeding, etc., and have no ability to be used as local ablation therapy

In addition, the various existing local liver ablation devices have a single, almost circular ablation effect shape, which cannot form an ideal cutting plane according to the surgeon's requirements, and cannot be used as a liver resection device

Therefore, in actual surgical operations, there is no equipment at home and abroad that can meet the needs of surgeons for liver resection and local ablation at the same time.

Images